CN217621510U - Cutting device - Google Patents

Abstract

The embodiment of the application provides a cutting equipment, includes: a machine base; the silicon rod bearing device is arranged on the base; the linear cutting device is arranged on the base and can move relative to the silicon rod bearing device; the wire cutting device includes: the two sets of take-up and pay-off mechanisms and the at least two cutting wheel sets; a single cutting line is wound on at least two cutting wheel sets in sequence after being paid out from one take-up and pay-off mechanism and then is stored in the other take-up and pay-off mechanism; one cutting wheel set comprises two cutting wire wheels with parallel central lines; the cutting lines wound on the group of cutting wheel sets are used for cutting one silicon rod. The cutting equipment provided by the embodiment of the application can realize multi-station cutting.

Description

Cutting device

Technical Field

The application relates to a hard and brittle material cutting technology, in particular to cutting equipment.

Background

With the development of heterojunction cells, the demand for small silicon wafers is increasing. In the traditional scheme, a cylindrical silicon single crystal rod is usually cut into a square rod, then the square rod is cut into a large silicon wafer, and then the large silicon wafer is scribed and cut by adopting a laser technology to form a small silicon wafer, but the cross section of the small silicon wafer is damaged and defective in the laser scribing process, so that the conversion efficiency of the finally processed heterojunction battery is seriously influenced.

In addition, due to the limitation of the existing cutting equipment, one cutting equipment can only cut one silicon rod at the same time, and the efficiency is low.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides a cutting device.

According to a first aspect of embodiments herein, there is provided a cutting apparatus comprising:

a machine base;

the silicon rod bearing device is arranged on the base;

the linear cutting device is arranged on the base and can move relative to the silicon rod bearing device; the wire cutting device includes: the two sets of take-up and pay-off mechanisms and the at least two cutting wheel sets; a single cutting line is wound on at least two cutting wheel groups in sequence after being paid out from one take-up and pay-off mechanism and then is stored in the other take-up and pay-off mechanism; one cutting wheel set comprises two cutting wire wheels with parallel central lines; the cutting lines wound on the group of cutting wheel sets are used for cutting one silicon rod.

According to the technical scheme provided by the embodiment of the application, the silicon rod bearing device and the linear cutting device are arranged on the base; the linear cutting device and the silicon rod bearing device can move relatively; the linear cutting device adopts two sets of take-up and pay-off mechanisms and at least two cutting wheel sets, and the cutting line is walked around from each mechanism in proper order, and at the relative movement in-process, the cutting line of locating on a cutting wheel set cuts a silicon rod for cutting equipment can cut two at least silicon rods simultaneously, and efficiency is higher.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a cutting apparatus provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a wire cutting device of a cutting apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view of a mechanism for slicing a silicon rod into small silicon rods;

fig. 4 is a schematic structural view of a silicon rod carrying device in a cutting apparatus provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a spraying device arranged on the cutting equipment provided by the embodiment of the application;

FIG. 6 is a schematic structural view of the cutting apparatus provided in the embodiment of the present application with a supporting platform removed;

fig. 7 is a schematic structural diagram of a linear cutting device arranged on a base in the cutting apparatus provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a wire cutting device in the cutting apparatus provided in the embodiment of the present application;

fig. 9 is a schematic view of a take-up and pay-off mechanism, a wire arranging mechanism and a tension mechanism in the cutting device provided in the embodiment of the present application;

FIG. 10 is a schematic view of a silicon rod centering device according to an embodiment of the present disclosure;

fig. 11 is a schematic structural view of a silicon rod centering mechanism provided in an embodiment of the present application;

FIG. 12 is a partial cross-sectional view of a silicon rod centering mechanism provided in an embodiment of the present application;

fig. 13 is a schematic structural view illustrating a structure in which a centering support is engaged with a clamping jaw connecting block in the silicon rod centering mechanism provided in the embodiment of the present application;

fig. 14 is a schematic structural view of another silicon rod centering mechanism provided in an embodiment of the present application;

fig. 15 is a partial cross-sectional view of the silicon rod centering mechanism shown in fig. 14.

Reference numerals are as follows:

1-a machine base;

2-silicon rod carrying device; 21-a load-bearing platform; 211-a cushion cap support; 22-a silicon rod guide block; 23-a nylon support block;

3-a wire cutting device; 31-cutting the stent; 32-a take-up and pay-off mechanism; 321-a take-up and pay-off motor; 322-a bearing seat; 323-take-up and pay-off rollers; 33-a wire arranging mechanism; 331-a flat cable module; 332-flat cable connecting plate; 333-wire arranging wheel; 334-a balancing block; 34-a tension mechanism; 341-tension motor; 342-a tension arm; 343-a tension pulley; 35-a wire passing wheel; 36-a cutting reel;

4-a motion drive mechanism;

5-a centering device; 51-centering the supporting seat; 52-centering adjustment plate; 53-centering mechanism; 531-centering the support; 532-centering cylinder; 533-centering the drive rod; 534-centering guide rod; 5341-stop collar; 535-centering jaws; 5351-jaw connection block; 5352-gripper arms; 536-a buffer block; 537-a first protective sheet metal; 538-a second protective sheet metal; 539-organ shield; 5310-centering lead screw; 5311 centering the nut; 5312-a centering motor; 5313-a centering base; 5314-centering the guide rail; 5315-centering the slide block; 5316-a drive wheel; 5317-a driven wheel; 5318-a synchronous belt; 5319-a protective cover; 54-centering adjustment assembly; 56-rod length detection assembly;

6-cutting line;

7-silicon rod;

8-spraying device.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

The embodiment provides cutting equipment for cutting a hard and brittle material rod such as monocrystalline silicon and polycrystalline silicon.

As shown in fig. 1 and fig. 2, the cutting apparatus provided in this embodiment includes: the silicon rod cutting machine comprises a machine base 1, a silicon rod bearing device 2, a wire cutting device 3 and a motion driving mechanism 4. Wherein, frame 1 is as foundation structure for install and bear other each part. The silicon rod bearing device 2, the linear cutting device 3 and the motion driving mechanism 4 are all arranged on the machine base 1.

The wire cutting device 3 and the silicon rod carrier 2 are movable relative to each other. During the relative movement, the silicon rod 7 is cut by the cutting wire wound around the wire cutting device 3. In an embodiment, the silicon rod carrying device 2 may be stationary, and the wire cutting device 3 may be moved relative to the machine base 1; or the linear cutting device 3 is adopted to be static, and the silicon rod carrying device 2 moves relative to the machine base 1. In the present embodiment, the silicon rod carrier 2 is described as being moved relative to the base 1.

As shown in fig. 3, taking a square rod with a rectangular cross section as an example, the square rod is cut along the length direction of the square rod to obtain two small silicon rods with smaller cross sectional areas.

The wire cutting device 3 includes: the two groups of take-up and pay-off mechanisms and the at least two cutting wheel groups; the two groups of take-up and pay-off mechanisms are respectively positioned at two sides of the cutting bracket; and a single cutting line is sequentially wound on at least two cutting wheel groups and then stored in the other take-up and pay-off mechanism after being paid out from one take-up and pay-off mechanism. One cutting wheel set comprises two cutting wire wheels with parallel central lines; and the cutting lines wound on the group of cutting wheel sets are used as a wire saw for cutting one silicon rod.

According to the technical scheme provided by the embodiment of the application, the silicon rod bearing device and the wire cutting device are arranged on the base; the linear cutting device and the silicon rod bearing device can move relatively; the wire cutting device adopts two sets of take-up and pay-off mechanisms and at least two cutting wheel sets, the cutting line is sequentially wound around each mechanism, and in the relative movement process, one silicon rod is cut around the cutting line arranged on one cutting wheel set, so that the cutting equipment can cut at least two silicon rods simultaneously, and the efficiency is high.

A specific scheme is as follows: the number of the cutting wheel groups is two, and the cutting wheel groups in the two groups are arranged side by side; two cutting wire wheels in one group are arranged at intervals along the vertical direction; the cutting line wound between the two cutting line wheels in one group extends along the vertical direction.

Further, the wire cutting device 3 further includes: the cutting line is wound on the cutting line wheel through the winding and unwinding mechanism, the tension mechanism and the line passing mechanism in sequence after being discharged from the winding and unwinding mechanism. The tension mechanism, the wire arranging mechanism and the wire winding and unwinding mechanism are arranged on the base and positioned on two sides of the cutting bracket; the wire passing mechanism is arranged on the cutting bracket and/or the base.

In the traditional scheme, a cylindrical single crystal silicon rod is cut into a square rod, then the square rod is cut into a large silicon wafer, scribing and cutting are carried out on the large silicon wafer to form a small silicon wafer in the laser technology, but the laser scribing process can cause damage and defect states on the cross section of the small silicon wafer, and the conversion efficiency of the finally processed heterojunction battery is seriously influenced.

The embodiment provides a cutting method, after a square rod is obtained, the square rod is cut along the length direction of the square rod to obtain a small silicon rod with a small cross-sectional area, then the small silicon rod is sliced, a silicon wafer with a small size is directly obtained, the step of laser scribing is omitted, and the surface of the small silicon wafer is prevented from being damaged. One cutting mode can be used for cutting from the center line of the silicon rod, the square rod is cut into two small silicon rods with the same cross section area, and the small silicon wafers obtained after slicing are identical in size and convenient to store and transport. The cutting process has very high requirement on the alignment precision between the wire cutting device and the silicon rod, and the cutting wire must pass through the central line of the square rod.

The cutting device provided by the embodiment is used for cutting the silicon rod along the length direction of the silicon rod so as to cut the silicon rod into small silicon rods with smaller cross sections, and is particularly suitable for cutting square rods with rectangular cross sections so as to match with the cutting method.

As shown in fig. 1 and fig. 2, the cutting apparatus provided in this embodiment further includes: centering device 5, centering device 5 sets up on frame 1. Two centering clamping jaws in the centering device 5 extend to two sides of the silicon rod and are used for pushing the silicon rod to move along a first direction to be aligned with cutting lines wound on a group of cutting wheel sets; the first direction is perpendicular to the direction of feed of the cutting wire.

The centering device 5 is arranged on the silicon rod carrying device 2, and the centering device 5 has at least two pairs of centering clamping jaws extending to both sides of the silicon rod 7 for pushing the silicon rod 7 to move to a target cutting position corresponding to the cutting line. And then the silicon rod 7 is kept still at the position, the silicon rod carrying device 2 is driven to move, and the silicon rod is cut through the cutting line, so that two small silicon rods with smaller cross sectional areas are obtained.

The small silicon rod is directly cut into slices subsequently, so that a silicon wafer with a small size is obtained, the traditional laser scribing is not adopted, the silicon wafer is prevented from being damaged, and the quality of the silicon wafer is guaranteed.

On the basis of the technical scheme, when the centering clamping jaw in the centering device 5 pushes the square rod to push the center line of the square rod to be aligned with the cutting line to the target cutting position, the cutting line can cut through the center line of the square rod, and two small silicon rods with equal cross-sectional areas are obtained. For example: the moving travel and the moving speed of the two centering clamping jaws in one pair are the same, and the silicon rod can be pushed to move to the position where the central line of the silicon rod along the length direction is aligned with the cutting line.

Based on the above scheme, this embodiment provides a cutting equipment's concrete implementation: the silicon rod carrier 2 is moved in a horizontal direction relative to the machine base 1, and the length direction of the silicon rod 7 extends in the horizontal direction. The silicon rod 7 is cut by a cutting line extending in the vertical direction.

As shown in fig. 4, the silicon rod carrier 2 specifically includes: a bearing platform 21 and at least one set of bearing platform brackets 211 extending from one side of the bearing platform 21 along the horizontal direction. The set of platform supports 211 comprises two platform supports 211 arranged side by side, a wire passing space is left between the two platform supports 211, and the cutting wire can pass through the wire passing space. The silicon rod 7 is placed on the two platform supports 211, and the length direction of the silicon rod 7 is the same as the length direction of the platform supports 211. And the cutting lines wound in one cutting wheel set are used for cutting the silicon rods on the bearing platform supports, so that multi-station cutting is realized.

In this embodiment, the length direction of the silicon rod, the center line direction of the silicon rod, and the moving direction of the silicon rod carrying device 2 are the same, and are referred to as a second direction; the width direction of the silicon rod is referred to as a first direction, namely: a horizontal direction perpendicular to the second direction. In the process that the silicon rod carrying device 2 moves along the second direction, the vertical cutting line enters the line passing space from one end of the bearing platform support 211, and the silicon rod 7 is cut.

The bearing platform supports 211 can be a group, and can be used for cutting one silicon rod to realize single-station cutting. Or, the bearing platform supports 211 can be also two groups, the two groups of bearing platform supports 211 are arranged side by side, each group of bearing platform supports 211 bears one silicon rod, and the two silicon rods can be cut simultaneously, so that double-station cutting is realized. Alternatively, the platform holder 211 can be three or more groups, so as to realize cutting at three or more stations.

The silicon rod carrier 2 can be driven in various ways, for example: the screw rod extending along the second direction is driven by the driving motor to rotate, and the screw rod is in threaded fit with the bearing platform 21 so as to drive the bearing platform 21 to move along the second direction, so that cutting and feeding are realized. The bearing platform 21 can also be driven to move by modes of electric sliding tables, gear transmission, belt transmission, cylinder drive and the like.

The silicon rod can be manually placed on the bearing platform support 211, and can also be placed on the bearing platform support 211 through a mechanical arm. The silicon rod guide blocks 22 are arranged on the tops of the two far sides of the two bearing platform supports 211. The silicon rod guide blocks 22 are arranged at intervals along the length direction of the support platform holder 211. The silicon rod guide blocks 22 serve to limit the position of the silicon rod, and the silicon rod is placed between two opposing silicon rod guide blocks 22. The inner side of the silicon rod guide block 22 is an inclined surface for guiding the silicon rod to fall. The silicon rod guide block 22 may be made of a buffer material such as nylon, so as to prevent the silicon rod from being scratched and protect the silicon rod.

In addition, a plurality of nylon support blocks 23 are arranged on the top surface of the platform holder 211 at intervals, and the silicon rod is placed on the nylon support blocks 23. The nylon supporting block 23 can protect the silicon rod and avoid scratching the surface of the silicon rod.

Further, as shown in fig. 5, a spraying device 8 is further adopted for spraying cutting fluid to the cutting line for lubricating the cutting line and washing away impurities such as silicon powder attached to the cutting line, so that the abrasion to the cutting surface of the silicon rod is reduced, and the cutting quality is improved. Specifically, the spraying device 8 is fixed on the cutting support 31, and sprays cutting fluid to the cutting line above the cutting line wheel.

The embodiment provides a specific implementation manner of the wire cutting device 3:

as shown in fig. 6 to 9, two sets of take-up and pay-off mechanisms 32 are fixed on the machine base 1 and respectively located at two sides of the cutting bracket 31 for providing power for high-speed movement of the cutting line. Two sets of tension mechanisms 34 are disposed on the cutting support 31 and located on two sides of the cutting support 31. The cutting line wheel set comprises two cutting line wheels 36 with parallel central lines.

The cutting line 6 is fed out from one take-up and pay-off mechanism 32 and then sequentially wound around one tension mechanism 34, two cutting line wheels 36 in the cutting line wheel set, the other tension mechanism 34 and the other take-up and pay-off mechanism 32.

Furthermore, a winding displacement mechanism 33 is further adopted and arranged beside the winding and unwinding mechanism 32, and the cutting line extends out of the winding and unwinding mechanism 32, then passes through the winding displacement mechanism 33 and then passes through the tension mechanism 34. The wire arranging mechanism 33 is used for guiding the cutting wire to be uniformly wound on the take-up and pay-off mechanism 32.

Furthermore, a wire passing mechanism is adopted and comprises a plurality of wire passing wheels, one part of the wire passing wheels are arranged on the cutting bracket 31, and the other part of the wire passing wheels are arranged on the machine base 1. The cutting line passing through the tension mechanism 34 and the cutting line wheel set is wound on the line passing mechanism.

One embodiment is as follows: in the operation process of the two take-up and pay-off mechanisms 32, one of the two take-up and pay-off mechanisms serves as a pay-off mechanism, and the other one serves as a take-up mechanism. In the process of reciprocating movement of the cutting line, the take-up and pay-off mechanism 32 alternately takes up and pay off. The take-up and pay-off mechanism 32 specifically includes: a take-up and pay-off motor 321, a bearing block 322 and a take-up and pay-off roller 323. Wherein, the bearing seat 322 is fixed on the machine base 1, and a bearing is arranged in the bearing seat. An output shaft of the take-up and pay-off motor 321 is connected to the take-up and pay-off roller 323 and passes through an inner ring of the bearing. The take-up and pay-off motor 321 is used for driving the take-up and pay-off roller 323 to rotate in a reciprocating mode and used for releasing cutting wires and storing the cutting wires.

The traverse device 33 includes: the flat cable device comprises a flat cable module 331, a flat cable connecting plate 332, a flat cable wheel 333 and a balancing block 334. The flat cable connecting plate 332 can reciprocate under the driving of the flat cable module 331, the flat cable wheel 333 is arranged on the flat cable connecting plate 332 and reciprocates with the flat cable connecting plate 332 within the length range of the take-up and pay-off roller 323, so as to sequentially release the cutting wires wound on the take-up and pay-off roller 323, or the cutting wires are wound on the take-up and pay-off roller 323. The balance weight is arranged on the wire arranging connecting plate 332 and is opposite to the wire arranging wheel 333, the wire arranging wheel 333 and the balance weight 334 can rotate on the fixed axis, the position of the balance weight 334 is adjusted to realize stable balance of the wire arranging wheel 333 and the balance weight 334, and the wire arranging wheel 333 is guaranteed not to shake in the reciprocating motion process. A tension monitoring sensor is attached to the wire arranging wheel 333 and used for detecting the tension of the cutting wire.

The tension mechanism 34 includes: a tension motor 341, a tension arm 342, and a tension pulley 343. The tension pulley 343 is rotatably connected to one end of the tension arm 342, and the other end of the tension arm 342 is connected to the tension motor 341. The cutting line is wound on the tension wheel 343, and the tension motor 341 drives the tension arm 342 to swing, so as to provide stable swing torque to ensure that the cutting line has stable additional tension all the time in the whole cutting process.

Furthermore, the cutting device also comprises a plurality of wire passing wheels 35, and the cutting wires are wound on the wire passing wheels 35. The thread take-up wheel 35 can be used for supporting the cutting thread to ensure that the cutting thread has a certain tension and can also be used for changing the direction of the cutting thread.

One embodiment is as follows: a take-up area and a pay-off area are respectively formed on the left side and the right side of the cutting support 31, and the take-up and pay-off mechanism 32, the flat cable mechanism 33 and the tension mechanism 34 are arranged in the take-up area and the pay-off area. A cutting area is formed below the cutting support 31, and the wire passing wheel 35 and the cutting wire wheel 36 are positioned in the cutting area.

The cutting area of the cutting support 31 is provided with a cutting wheel set, and the number of the cutting wheel sets can be one group, or two or more than three groups. Two sets of cutting wheels are used as an example in this embodiment. The two cutting wire wheels 36 in the cutting wheel set are arranged up and down, and the cutting wire between the two cutting wire wheels 36 extends along the vertical direction. The cutting line 6 is led out from the wire collecting and releasing roller 323, the wire arranging wheel 333 and the tension wheel 343 on one side, sequentially passes through the two wire passing wheels 35, the two cutting wire wheels 36 and the two wire passing wheels 35 on the bottom, is wound on the other two cutting wire wheels 36, passes through the two wire passing wheels 35, and is contained in the wire collecting and releasing roller 323 through the tension wheel 343 and the wire arranging wheel 333 on the other side.

The cutting line between the two cutting reels 36 forms a wire saw for cutting the silicon rod. The two wire saws are used for cutting the two silicon rods at the same time, double-station cutting is achieved, and cutting efficiency is improved.

In one group of cutting wheel sets, the cutting wire wheel 36 positioned at the upper part is arranged on the cutting bracket 31, and the cutting wire wheel 36 positioned at the lower part is arranged on the machine base 1.

On the basis of the above technical solution, the centering device 5 is disposed below the set of support stand trays 211, and the centering jaws extend upward from both sides of the set of support stand trays to both sides of the silicon rod 7, for pushing the silicon rod 7 to move horizontally along the first direction.

As shown in fig. 4 and 10, the silicon rod centering device provided in the present embodiment includes: a centering support seat 51, a centering mechanism 53 and a centering adjustment assembly 54. Wherein the centering support seat 51 is a basic structure, and the centering mechanism 53 and the centering adjustment assembly 54 are installed on the centering support seat 51. The centering support seat 51 can be mounted to the base of the cutting apparatus.

The centering mechanism 53 is disposed on the centering support seat 51. The centering mechanism 53 has at least one pair of centering jaws disposed in correspondence with the silicon rod, the pair of centering jaws being movable toward and away from each other to move the silicon rod to an intermediate position of the pair of centering jaws. The moving direction of the pair of centering clamping jaws approaching or departing from each other is defined as a first direction, and the first direction is perpendicular to the central line of the silicon rod.

The centering adjustment assembly 54 is used for adjusting the position of the centering mechanism 53, and can drive the centering mechanism 53 to move along the moving direction of the silicon rod, so as to accurately move the centering mechanism 53 in place. Due to the influence of the size of the centering mechanism 53 and production errors, the centering mechanism 53 may not be installed in place at one time, and the centering adjustment assembly 54 can push the centering mechanism 53 to move in place, so that the position of the centering mechanism 53 is accurate, and the accuracy of centering the silicon rod can be ensured.

The technical scheme that this embodiment provided, set up centering mechanism and centering adjustment subassembly on the centering supporting seat, wherein, centering adjustment subassembly is used for adjusting the position of centering mechanism, centering mechanism has at least a pair of centering clamping jaw, a pair of centering clamping jaw can be close to each other or keep away from in order to promote the silicon rod and remove to the intermediate position of a pair of centering clamping jaw, realize the silicon rod centering, in order to cut into two little silicon rods that the cross-sectional area is less with the silicon rod, follow-up direct slicing to little silicon rod, obtain the less silicon chip of size, no longer adopt traditional laser scribing, avoid producing the damage to the silicon chip, guarantee silicon chip quality.

Further, when the moving speed and the moving distance of the pair of centering clamping jaws are the same, the cutting line cuts the silicon rod through the center line of the silicon rod, and then the silicon rod is cut into two small silicon rods with the same cross sectional area.

When the length of the silicon rod is short, a centering mechanism 53 is adopted, and the centering clamping jaws of the centering mechanism extend to the middle parts of the two sides of the silicon rod to push the silicon rod, so that the silicon rod can be moved in place.

When the length of the silicon rod is long, two, three or more than three centering mechanisms 53 can be adopted and arranged at intervals along the length direction of the silicon rod, and pushing forces can be applied to the silicon rod from the front end and the rear end of the silicon rod respectively or from the middle part of the silicon rod, so that the center line of the silicon rod does not deviate in the moving process.

In this embodiment, two centering mechanisms 53 are arranged at intervals along the length direction of the silicon rod, and respectively apply pushing forces to the front and rear portions of the silicon rod.

The number of the centering adjustment assemblies 54 may be two, and the two centering adjustment assemblies are respectively disposed beside the centering mechanism 53 and used for pushing the corresponding centering mechanism 53 to move along the first direction.

Further, a centering adjustment plate 52 is arranged on the top of the centering support seat 51. The centering adjustment plate 52 is movable in a first direction relative to the centering support seat 51 and locked after being moved into position, for example: may be secured to the centering support seat 51 by fasteners. The centering adjustment assembly 54 is adapted to apply a force to the centering adjustment plate 52 to move it in a first direction. The centering mechanism 53 is fixed to the centering adjustment plate 52 and moves together with the centering adjustment plate 52.

Based on the above scheme, the two centering mechanisms 53 are both arranged on the centering adjustment plate 52, and the centering adjustment assembly 54 pushes the centering adjustment plate 52 to move, so that the two centering mechanisms 53 move along with the centering adjustment plate 52, and the positions of the centering mechanisms 53 do not need to be adjusted respectively, thereby reducing adjustment steps and procedures and further improving the production efficiency.

The manner in which the centering adjustment assembly 54 cooperates with the centering mechanism 53 can be varied. For example, one implementation is: the centering adjustment assembly 54 includes: the centering and adjusting device comprises a centering and adjusting block and an adjusting bolt, wherein the centering and adjusting block is fixed on a centering and supporting seat 51 and is provided with a threaded hole extending along a first direction. The adjusting bolt is screwed into the threaded hole, and the length of the adjusting bolt extending out relative to the centering adjusting block can be adjusted by rotating the adjusting bolt. The tail end of the adjusting bolt abuts against the centering adjusting plate or is fixedly connected with the centering adjusting plate, and the centering adjusting plate can be pushed to move along the first direction by rotating the adjusting bolt.

As for the connection manner between the centering adjustment plate 52 and the centering support seat 51, for example, one implementation manner is as follows: a long hole extending in the first direction is formed in the centering support base 51, and the centering adjustment plate 52 is fixed in the long hole by a bolt. When the bolts are loosened, the centering adjustment plate 52 can move in a first direction relative to the centering support base 51, and when moved into position, the bolts are tightened to secure the centering adjustment plate 52 to the centering support base 51.

The centering device is arranged below the bearing platform support 211, and two centering mechanisms 53 are arranged at intervals along the length direction of the silicon rod. Two centering jaws 535 of the centering mechanism 53 extend up to both sides of the silicon rod 7. Before cutting, the silicon rod 7 is placed on the bearing platform support 211, then the two centering clamping jaws 535 are driven to approach each other, when one of the centering clamping jaws 535 contacts with the side surface of the silicon rod 7 and exerts pushing force on the silicon rod 7, the silicon rod 7 is pushed to move along the first direction until the two side surfaces of the silicon rod 7 contact with the centering clamping jaws 535, the silicon rod 7 is moved in place, and at the position, the cutting line can cut through the center line of the silicon rod.

On the basis of the above technical solution, the rod length detecting assembly 56 is arranged on the centering adjustment plate 52 and can be located between the two centering mechanisms 53. The rod length detecting module 56 extends upward to the bottom of the silicon rod 7, and is used for detecting the current position of the silicon rod 7 and calculating the length of the silicon rod 7 according to the moving distance of the silicon rod 7 during the cutting process.

On the basis of the above scheme, the present embodiment provides an implementation manner of the centering mechanism 53:

as shown in fig. 11 to 13, the silicon rod centering mechanism provided in the present embodiment includes: centering abutment 531, centering drive rod 533, and centering jaw 535.

The centering support 531 is a base structure for mounting and supporting the components. The centering driving member is disposed on the centering support 531. The centering driving member may be an electric cylinder, a hydraulic cylinder, an air cylinder, or the like, and in this embodiment, the centering driving member is specifically a centering air cylinder 532.

The number of the centering driving rods 533 is at least one pair, and the pair includes two centering driving rods 533.

The number of centering jaws is at least one pair, one pair comprising two centering jaws 535. When a pair of centering jaws 535 is used, two of the centering jaws 535 are disposed at both ends of the centering support 531 in the first direction. One centering driving rod 533 is correspondingly connected with one centering clamping jaw 535, and the two centering clamping jaws 535 can synchronously move towards each other or move away from each other; alternatively, two centering drive rods 533 may be used to connect one centering jaw 535 to another centering drive rod 533 to connect another centering jaw 535, so that one centering jaw 535 is driven to move by the two centering drive rods 533.

When two pairs of centering jaws 535 are used, the two centering jaws 535 of a pair are disposed at opposite ends of the centering abutment 531 in the first direction, and the two pairs of centering jaws 535 are spaced apart in a direction perpendicular to the first direction. The centering jaws 535 at the same end are connected to the same centering drive bar 535 to drive the two pairs of centering jaws 535 to move via the centering drive bar.

Alternatively, more than three pairs of centering jaws may be used, and the arrangement may be made with reference to the two pairs.

Specifically, taking the pair of centering jaws 535 as an example, the centering driving rod 533 extends along a first direction, which is a moving direction of the centering jaws 535 and is perpendicular to the center line of the silicon rod. The cylinder 532 is located in the middle, the centering jaws 535 are located on both sides, and one end of the centering driving rod 533 is connected to the cylinder 532, and the other end is connected to the centering jaws 535.

The centering cylinder 532 may drive the centering actuator rod 533 to move in the first direction relative to the centering support 531, and drive the centering jaws 535 to move synchronously. The centering cylinder 532 drives both centering jaws 535 the same distance and at the same speed.

Before the silicon rod is cut by the cutting device, the centering clamping jaws 535 are driven to move towards each other through the centering cylinder 532, the silicon rod is pushed to move to the neutral position, namely: the central line of the silicon rod is aligned with the cutting line. For example: assuming that the first direction is a left-right direction, if the initial position of the silicon rod is deviated to the left, the centering jaw 535 on the left side contacts the silicon rod first, and pushes the silicon rod to move to the right until the silicon rod moves to contact the centering jaw 535 on the right side, and the silicon rod reaches the neutral position.

According to the technical scheme provided by the embodiment, the centering driving piece is arranged on the centering support, and the two sides of the centering support are respectively provided with the centering clamping jaws; one end of the centering driving rod is connected with the centering clamping jaw, the other end of the centering driving rod is connected with the centering driving part, the centering driving rod is driven by the centering driver to move relative to the centering support, and the centering clamping jaw is driven to move synchronously, so that the silicon rod is pushed to move to the middle position in the process that the two centering clamping jaws in one pair are close to each other and aligned with the cutting line, and the silicon rod is conveniently cut into two small silicon rods with the same cross section subsequently.

One implementation is as follows: the centering seat 531 has an accommodating space therein. The centering driving piece is arranged in the accommodating space.

The centering driving rod 533 is inserted into the centering support 531, one end of which penetrates into the accommodating space and is connected to the centering cylinder 532, and the other end of which is exposed from the centering support 531 and is connected to the centering jaw 535. The centering driving rod 533 and the centering support 531 make relative movement, and the centering support 531 guides the movement process.

On the basis of the technical scheme, the two centering guide rods 534 are correspondingly connected with the two centering clamping jaws 535 one by one respectively. Specifically, the centering guide bar 534 extends in the first direction and is movably disposed on the centering support 531, and one end of the centering guide bar 534 is connected to the centering jaw 535. One embodiment is: the centering guide bar 534 is inserted into the centering support 531.

During the process that the centering cylinder 532 drives the centering clamping jaws 535 to move, the moving tracks of the centering clamping jaws 535 are deviated from the first direction due to the friction force, the gravity and the like of the contact parts, so that the two centering clamping jaws 535 cannot vertically abut against the two side surfaces of the silicon rod. The centering guide rod 534 is connected between the centering clamping jaw 535 and the centering support 531, the movement of the centering clamping jaw 535 is guided, the deviation from the first direction is avoided, so that the two centering clamping jaws 535 are vertically abutted against two side faces of the silicon rod, and the centering accuracy is improved.

On the basis of the above technical solution, the embodiment provides a specific implementation manner of a silicon rod centering mechanism: the centering jaw 535 specifically comprises: a jaw connection block 5351 and a jaw arm 5352. The clamping jaw connecting block 5351 is connected with the centering driving rod 533, the clamping jaw arm 5352 is arranged on the clamping jaw connecting block 5351, the clamping jaw arm 5352 extends towards the silicon rod, and the end portion of the clamping jaw arm 5352 is located on the side face of the silicon rod and used for aligning the silicon rod.

One embodiment is as follows: the clamping jaw arm 5352 is arranged at the top of the clamping jaw connecting block 5351, the clamping jaw arm 5352 extends upwards, and the top end of the clamping jaw arm 5352 is located on the side face of the silicon rod and used for aligning the silicon rod above.

Alternatively, the clamping jaw arm 5352 may also be disposed at the bottom of the clamping jaw connection block 5351, and extend downward to the side surface of the silicon rod for aligning the silicon rod below.

Further, a buffer block 536 is provided on the side of the gripper arm 5352 facing the silicon rod. The buffer block 536 is used for directly contacting the surface of the silicon rod to avoid scratching the surface of the silicon rod so as to protect the silicon rod. The buffer block 536 may be made of soft material such as nylon, felt, rubber, silicone, etc.

One implementation of the centering seat 531 is as follows: the centering support 531 is a box-shaped structure with an inner cavity, the centering cylinders 532 are disposed in the inner cavity, the number of the centering cylinders 532 may be one or two, when one of the centering cylinders 532 is provided, the centering cylinders 532 may be respectively connected to the centering driving rods 533 through a connecting rod transmission structure, and one centering cylinder 532 drives the two centering driving rods 533 to move towards or away from each other. When the number of the centering cylinders 532 is two, one centering cylinder 532 is connected to one centering driving rod 533, and the strokes of the two centering driving rods 533 are the same, so that the centering jaws 535 are driven to move the same distance for centering.

Two sidewalls perpendicular to the first direction in the centering support 531 are provided with a driving rod through hole through which the centering driving rod 533 passes and a guide rod through hole through which the centering guide rod 534 passes. The driving rod through hole is positioned above the guiding rod through hole, and the central lines of the two centering driving rods 533 are arranged side by side; the centerlines of the two centering guide bars 534 are arranged side by side.

Specifically, two side walls of the centering support 531 are respectively provided with four through holes, and the through holes are arranged in two rows and two columns, the upper two through holes are used for penetrating the centering driving rod 533, and the lower two through holes are used for penetrating the centering guiding rod 534. As viewed from one side of the centering holder 531, the centering driving rod 533 corresponding to the centering jaw of the one side penetrates into the upper left through hole, and the centering guiding rod 534 penetrates into the lower right through hole. The centering driving rod 533 corresponding to the centering clamping jaw on the other side penetrates through the upper right through hole, and the centering guiding rod 534 penetrates through the lower left through hole. So set up, with the centering actuating lever and the diagonal arrangement of centering guide bar along centering support 531 that a centering clamping jaw corresponds, the distance between the two is great, more can improve the stability and the accuracy of removal process.

Furthermore, relative moving parts exist in the centering mechanism, and in order to protect the moving parts, a protective metal plate, an organ shield and the like are covered outside, so that the influence of water, foreign matter, dust and the like entering the centering support on the normal movement of the centering driving rod and the centering guide rod is avoided.

Specifically, a organ shield 539 is connected between the centering support 531 and the centering jaw 535 to seal the space between the centering support 531 and the centering jaw 535. The opening and contraction directions of the organ shield 539 are set in a first direction. As the centering jaws 535 move outward, the organ shield 539 stretches open; as the centering jaws 535 move inward, the organ shield 539 contracts. The organ shield 539 prevents the ingress of water, foreign matter dust, etc., and does not interfere with the normal movement of the centering jaws 535.

Furthermore, a limiting sleeve 5341 is sleeved on the end part of the centering guide rod 534 close to the centering clamping jaw 535, and is used for limiting the stroke of the centering cylinder and preventing the centering cylinder from crushing the organ shield 539.

Furthermore, a protective metal plate (called as a first protective metal plate 537) is laid above the centering support 531, connected between the two organ shields 539, and can be protected from above. In the application process, the first protective metal plate 537 can contact with the upper part of the cutting equipment, and the first protective metal plate 537 has certain strength and wear resistance, so that the centering support 531 can be protected, and the wear is reduced.

Furthermore, a second protective metal plate 538 is arranged outside the clamping jaw connecting block 5351 in a surrounding mode, the clamping jaw connecting block 5352 is used for protection, abrasion is reduced, and the service life of the clamping jaw connecting block is prolonged.

In order to facilitate a clearer understanding of the technical solution of the present application, the following describes the centering operation of the silicon rod centering mechanism of the present application:

after the silicon rod is placed on the bearing platform of the cutting equipment, the silicon rod is positioned between the two centering clamping jaws and is not contacted with the two centering clamping jaws. And a centering driving piece in the centering mechanism is controlled to work, at least one pair of centering driving rods is driven to move inwards, and the two centering clamping jaws are driven to mutually approach. One of the centering clamping jaws contacts with the silicon rod firstly, and pushes the silicon rod to move towards the other clamping jaw until the two centering clamping jaws contact with the silicon rod and clamp the silicon rod.

The centering driving part drives the two centering clamping jaws to move for the same distance at the same fixed speed, so that the silicon rod can be moved to the middle positions of the two centering clamping jaws, and centering and alignment are realized. In the subsequent cutting process, the cutting line may cut through the center line of the silicon rod to cut the silicon rod into two small silicon rods having an equal cross-sectional area.

Taking a square rod with a rectangular cross section as an example, the cutting line cuts through the center line of the square rod, and the square rod can be cut into halves to obtain two small silicon rods with the same cross sectional area.

As shown in fig. 14 and 15, the present embodiment provides another implementation of the centering mechanism: silicon rod centering mechanism includes: centering lead screw 5310, centering drive, centering nut 5311 and centering jaw.

Wherein, centering lead screw 5310 extends along first direction, and centering nut 5311's quantity is two, centering nut 5311 and centering lead screw 5310 screw-thread fit.

At least one pair of centering jaws 535 is used, one pair comprising two centering jaws 535 disposed at each end of the centering screw 5310. The centering nut 5311 is connected with the centering clamping jaws on the corresponding sides, and the centering clamping jaws can synchronously move towards each other or move away from each other. The first direction is the direction of movement of the centering jaws.

When two pairs of centering jaws 535 are employed, the two pairs are spaced apart perpendicular to the first direction. Two pairs of centering jaws 535 on the same side are connected to the same centering nut 5311. More than three pairs of centering jaws 535 may also be used, arranged with reference to two pairs.

The centering driving member may be a motor, a hydraulic cylinder, or an air cylinder, and in this embodiment, the centering driving member is specifically a centering motor 5312. The centering motor 5312 is connected to the centering screw 5310 and is used for driving the centering screw 5310 to rotate. When the centering screw 5310 rotates, the pair of centering nuts 5311 move in opposite directions.

In this embodiment, which is exemplified by a pair of centering jaws, one centering jaw 535 is connected to one centering nut 5311 to move synchronously with the centering nut 5311 relative to the centering screw 5310. The centering clamping jaws extend towards the silicon rod, and the two centering clamping jaws are used for abutting against the silicon rod from two sides to realize silicon rod alignment. The centering motor 5312 drives the two centering jaws to move the same distance at the same speed via the centering screw 5310.

Before the silicon rod is cut by the cutting equipment, the centering clamping jaws are driven to move oppositely by the centering motor 5312, so that the silicon rod is pushed to move to a middle position, namely: the central line of the silicon rod is aligned with the cutting line. For example: if the first direction is the left-right direction, if the initial position of the silicon rod is deviated to the left, the centering clamping jaw on the left side is firstly contacted with the silicon rod, the silicon rod is pushed to move rightwards until the silicon rod moves to be contacted with the centering clamping jaw on the right side, and the silicon rod reaches the middle position.

The technical scheme that this embodiment provided adopts two centering nuts and centering lead screw thread fit, and the centering nut links to each other with the centering clamping jaw that corresponds the side, and through centering driving piece drive centering lead screw rotation to make two centering nuts drive at least a pair of centering clamping jaws that correspond and move towards opposite direction simultaneously, the in-process that the centering clamping jaw is close to each other promotes the silicon rod and removes to the meso position, aligns with the line of cut, is convenient for follow-up two little silicon rods that become the cross section the same with the silicon rod cutting.

The number of the centering screw rods 5310 may be one, and the two ends of the centering screw rod 5310 are respectively provided with external threads, and the external threads at the two ends have opposite rotation directions and are respectively in threaded engagement with one centering nut. When the centering screw 5310 rotates, the two centering nuts 5310 move in opposite directions.

Alternatively, two centering screws 5310 may be used, one centering screw 5310 threadedly engaged with one centering nut 5311. Two centering screws 5310 can be driven to rotate by one motor and a link mechanism, or two motors can be used to drive two centering screws 5310 to rotate respectively.

Further, a guide structure may be further employed for guiding the centering nut 5311 during its movement. One embodiment is as follows: with the centering base 5313, a centering guide rail 5314 extending in a first direction is provided on the centering base 5313. Two centering sliders 5315 are slidably connected to the centering rail 5314.

The centering nut 5311 is correspondingly fixedly connected with the centering slide block 5315. The centering slide 5315 limits the centering nut 5311 to move only in the first direction. Besides, the functions can be realized in a mode that the centering sliding grooves are matched with the centering sliding blocks.

The centering motor 5312 may be directly connected to the centering screw 5310, or may be connected to the centering screw 5310 through a transmission mechanism.

One embodiment is: the center line of the centering motor 5312 is parallel to and juxtaposed with the center line of the centering screw 5310. Referring to the perspective view of fig. 2, the first direction is the left-right direction of fig. 2, the centering motor 5312 is located beside the left threaded section of the centering screw 5310, and the output shaft extends to the left. The extending direction of the transmission mechanism is perpendicular to the first direction, and the transmission mechanism is connected to the left end of the centering screw 5310 and the left end of the centering motor 5312.

The transmission mechanism is used for transmitting driving force between the centering screw 5310 and the centering motor 5312, and the embodiment provides a specific mode: the transmission mechanism includes: a drive pulley 5316, a driven pulley 5317 and a timing belt 5318. The driving wheel 5316 is connected with an output shaft of the centering motor 5312, and the output shaft of the centering motor 5312 drives the driving wheel 5316 to rotate synchronously. The driven wheel 5317 is connected to the centering screw 5310 and rotates in synchronization with the centering screw 5310. The synchronous belt 5318 is sleeved on the driving wheel 5316 and the driven wheel 5317 to transmit the rotation torque of the driving wheel 5316 to the driven wheel 5317, and then the driven wheel 5317 drives the centering screw 5310 to rotate.

Besides the above-mentioned solutions, the transmission mechanism may also adopt a gear transmission mechanism or the like.

On the basis of the above technical solution, in order to protect the moving components such as the centering screw 5310, a protective cover 5319 can be used to cover the outer sides of the centering screw, the centering driving member and the centering nut. The shield 5319 may be a metal plate for preventing water, dust, impurities, etc. from entering the area enclosed by the shield 5319. The sheet metal has certain intensity and wearability, can protect the structure of contact with it, reduces wearing and tearing.

One way is as follows: two groups of protective covers 5319 are respectively covered on the outer sides of the two groups of centering nuts 5311 and the centering sliding blocks 5315. Further, an organ shield 539 is connected between the two shield sets 5319 to seal the two shield sets 5319. The opening and closing directions of the organ shield 539 are arranged in a first direction. As the centering jaws move outward, the organ shield 539 stretches open; when the centering jaws move inward, the organ shield 539 contracts. The organ shield 539 prevents water, foreign matter dust, etc. from entering, and does not affect the normal movement of the centering jaws.

On the basis of the above technical solution, the embodiment provides a specific implementation manner of the centering clamping jaw: centering clamping jaw specifically includes: a jaw connection block 5351 and a jaw arm 5352. The clamping jaw connecting block 5351 is connected to a protective cover 5319, and the protective cover 5319 is fixedly connected with the centering nut 5311. The clamping jaw arm 5352 is connected with the clamping jaw connecting block 5315, the clamping jaw arm 5352 extends towards the silicon rod, and the end part of the clamping jaw arm 5352 is located on the side surface of the silicon rod and used for aligning the silicon rod.

One embodiment is as follows: the clamping jaw connecting block 5351 is connected to the top of the protective cover 5319, and the clamping jaw arm 5352 extends upwards to the top end of the clamping jaw arm 5352, which is located on the side surface of the silicon rod and used for aligning the silicon rod above.

Alternatively, the gripper arm 5352 may extend downward to the side of the silicon rod for aligning the silicon rod below. A buffer block 536 is provided on the side of the gripper arm 5352 facing the silicon rod. Buffer 536 is configured to be in direct contact with the surface of the silicon rod to prevent scratching of the surface of the silicon rod, thereby protecting the silicon rod. The buffer block 536 may be made of soft material such as nylon, felt, rubber, silicone, etc.

In order to facilitate a clearer understanding of the technical scheme of the present application, the following description is made of a centering operation process of the silicon rod centering mechanism of the present application:

after the silicon rod is placed on the bearing platform of the cutting equipment, the silicon rod is positioned between the pair of centering clamping jaws and is not contacted with the two centering clamping jaws. And a centering driving piece in the centering mechanism is controlled to work to drive a centering screw rod to rotate, and a centering nut drives two centering clamping jaws in a pair to approach each other. One of the centering clamping jaws contacts with the silicon rod firstly, and pushes the silicon rod to move towards the other clamping jaw until the two centering clamping jaws contact with the silicon rod and clamp the silicon rod.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (16)

1. A cutting apparatus, comprising:

a machine base;

the silicon rod bearing device is arranged on the base;

the linear cutting device is arranged on the base and can move relative to the silicon rod bearing device; the wire cutting device includes: the two sets of take-up and pay-off mechanisms and the at least two cutting wheel sets; a single cutting line is wound on at least two cutting wheel sets in sequence after being paid out from one take-up and pay-off mechanism and then is stored in the other take-up and pay-off mechanism; one cutting wheel set comprises two cutting wire wheels with parallel central lines; the cutting lines wound on the group of cutting wheel sets are used for cutting one silicon rod.

2. The cutting apparatus according to claim 1, wherein the number of the cutting wheel groups is two groups, the cutting wheels in the two groups being arranged side by side; two cutting wire wheels in one group are arranged at intervals along the vertical direction; the cutting line wound between the two cutting line wheels in one group extends along the vertical direction.

3. The cutting apparatus of claim 2, wherein the wire cutting device further comprises:

the cutting wheel set is characterized by comprising a cutting support, wherein the cutting wheel positioned above the cutting wheel set is arranged on the cutting support, and the cutting wheel positioned below the cutting wheel set is arranged on the machine base.

4. The cutting apparatus of claim 3, wherein the wire cutting device further comprises: the cutting line is wound on the cutting line wheel through the winding and unwinding mechanism, the tension mechanism and the line passing mechanism in sequence after being discharged from the winding and unwinding mechanism;

the tension mechanism, the wire arranging mechanism and the wire winding and unwinding mechanism are arranged on the base and positioned on two sides of the cutting support; the wire passing mechanism is arranged on the cutting bracket and/or the base.

5. The cutting apparatus as claimed in claim 1, wherein the silicon rod carrier is moved in a horizontal direction with respect to the base, and a silicon rod is placed on the silicon rod carrier in a length direction which is the same as the moving direction of the silicon rod carrier.

6. The cutting apparatus of any of claims 1-5, further comprising:

the centering device is arranged on the base; two centering clamping jaws in the centering device extend to two sides of the silicon rod and are used for pushing the silicon rod to move along a first direction to be aligned with cutting lines wound on a group of cutting wheel sets; the first direction is perpendicular to the cutting line feed direction.

7. The cutting apparatus according to claim 6, wherein the two centering jaws are moved at the same distance and speed for pushing the silicon rod to move until the center line of the silicon rod in the length direction is aligned with the cutting line, so that the cutting line cuts through the center line of the silicon rod to obtain two small silicon rods with equal cross-sectional areas.

8. The cutting apparatus according to claim 7, characterized in that the silicon rod is a square rod with a rectangular cross-section.

9. The cutting apparatus according to claim 6, wherein the silicon rod carrying device comprises: the bearing platform and at least two groups of bearing platform supports extending out from one side of the bearing platform along the horizontal direction; the group of bearing platform supports comprise two bearing platform supports which are arranged side by side, a wire passing space is reserved between the two bearing platform supports, the silicon rod is placed on the two bearing platform supports, and the length direction of the silicon rod is the same as that of the bearing platform supports; and the cutting lines wound in one cutting wheel set are used for cutting the silicon rods on the bearing platform supports.

10. The cutting apparatus according to claim 9, wherein the centering device is disposed below a set of platform supports, and centering jaws extend upwardly from both sides of the set of platform supports to both sides of the silicon rod for pushing the silicon rod horizontally in the width direction of the silicon rod.

11. Cutting apparatus according to claim 9, characterized in that the centering means comprise:

the centering support seat is arranged below the bearing platform supports;

the centering mechanism is arranged on the centering support seat; the centering mechanism is provided with at least one pair of centering clamping jaws which are arranged corresponding to the silicon rods; the pair of centering clamping jaws can approach or move away from each other so as to enable the silicon rod to move to the middle position of the pair of centering clamping jaws;

and the centering adjustment assembly is arranged on the centering support seat and used for adjusting the position of the centering mechanism.

12. The cutting apparatus of claim 11, further comprising:

the centering adjusting plate is arranged at the top of the centering support seat; the centering and adjusting plate can move relative to the centering and supporting seat along a first direction and is fixed on the centering and supporting seat through a fastener after moving in place; the centering mechanism is fixed on the centering adjusting plate; the centering adjustment assembly is used for applying acting force moving along a first direction to the centering adjustment plate; the first direction is the same as the moving direction of the centering clamping jaws to approach or depart from each other.

13. The cutting apparatus of claim 12, wherein the number of the centering mechanisms is two, and the centering mechanisms are arranged on the centering adjustment plate at intervals in a direction perpendicular to the first direction.

14. The cutting apparatus of claim 11, wherein the centering mechanism comprises:

centering the support;

at least one pair of centering drive rods; the centering driving rod extends along the first direction and is arranged on the centering support;

the centering driving piece is arranged on the centering support; the centering driving piece is connected with one end of each pair of centering driving rods and can drive the centering driving rods to move relative to the centering support along a first direction;

the pair of centering clamping jaws are respectively arranged at two ends of the centering support along the first direction; the centering clamping jaw is respectively connected with the other end of the driving rod so as to synchronously move with the centering driving rod; the centering clamping jaw extends towards the silicon rod, and the centering clamping jaw is used for propping against the silicon rod from two sides to realize alignment.

15. The cutting apparatus of claim 14, wherein an accommodation is provided in the centering support, the centering drive being located in the accommodation; the centering driving rod penetrates through the centering support, the end part of the centering driving rod penetrating into the accommodating space is connected with the centering driving piece, and the end part of the centering driving piece extending out of the centering support is connected with the centering clamping jaw.

16. The cutting apparatus of claim 15, wherein the centering mechanism further comprises:

the centering guide rod extends along the first direction and is movably arranged on the centering support; one end of the guide rod is connected with the centering clamping jaw.

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