CN220030783U - Cutting machine - Google Patents

Abstract

The embodiment of the utility model provides a cutting machine, which comprises: a frame; the bearing device is arranged on the frame and used for bearing a workpiece to be cut; the cutting machine heads are sequentially arranged on the machine frame along the length direction of the machine frame; the cutting machine head and the bearing device can relatively move along the feeding direction, and the cutting machine head is used for winding a cutting line to cut a workpiece to be cut; the feeding direction is perpendicular to the length direction of the frame; and a vibration device for applying ultrasonic vibration to the cutting line. The cutter provided by the embodiment of the utility model can improve the cutting quality and the cutting efficiency.

Description

Cutting machine

Technical Field

The utility model relates to a wire cutting technology, in particular to a cutting machine.

Background

The wire cutting apparatus is an apparatus for cutting a workpiece using a rapidly moving cutting wire, such as cutting off, squaring, slicing, or the like, a silicon rod. Taking a cutting machine as an example, a longer silicon rod is cut into short rods with proper lengths through cutting lines, so that the subsequent processing procedures such as squaring, slicing and the like are facilitated.

The traditional cutting machine only uses friction between the cutting line and the silicon rod to realize cutting, but the cutting precision, the flatness of the cutting surface and the cutting efficiency which can be achieved by the current cutting machine reach the bottleneck. In the subsequent slicing process of the silicon rod, as the end face of the silicon rod has poor quality, a part of the end of the silicon rod is left without cutting, and the part is treated as waste, so that great raw material waste exists, and the production cost is also increased; the cutting efficiency in this cutting mode is also difficult to have a space for improvement.

Disclosure of Invention

In order to solve one of the above technical drawbacks, embodiments of the present utility model provide a cutter including;

a frame;

the bearing device is arranged on the frame and used for bearing a workpiece to be cut;

the cutting machine heads are sequentially arranged on the machine frame along the length direction of the machine frame; the cutting machine head and the bearing device can relatively move along the feeding direction, and the cutting machine head is used for winding a cutting line to cut a workpiece to be cut; the feeding direction is perpendicular to the length direction of the frame;

and a vibration device for applying ultrasonic vibration to the cutting line.

According to the technical scheme provided by the embodiment of the utility model, a bearing device and a plurality of cutting machine heads are arranged on a rack, and the bearing device is used for bearing a workpiece to be cut; the plurality of cutting machine heads are sequentially arranged on the frame along the length direction of the frame; the cutting machine head and the bearing device can relatively move along the feeding direction, and a cutting line wound on the cutting machine head is used for cutting a workpiece to be cut in the feeding movement process; the ultrasonic vibration device is also adopted to apply ultrasonic vibration to the cutting line, so that the cutting line can generate high-frequency micron-sized vibration, micro machining can be generated when the workpiece to be cut is cut by the high-frequency vibration of the cutting line, the ultrasonic vibration has an auxiliary effect on the cutting process of the workpiece to be cut, the cutting precision and efficiency are improved, the macroscopic acting force of the cutting line on the workpiece to be cut is reduced, the consistency of the cutting surface of the workpiece to be cut is improved, the cutting quality is improved, and the yield is improved. And moreover, a plurality of cutting heads can cut the workpiece to be cut at the same time, so that the cutting efficiency is improved in a multiplied way.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a front view of a cutter provided in an embodiment of the present utility model;

FIG. 2 is a left side view of a clipper provided by an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

fig. 4 is a schematic structural view of a cutting head in the cutter according to the embodiment of the present utility model;

FIG. 5 is an enlarged view of area A of FIG. 2;

FIG. 6 is a front view of another cutting machine according to an embodiment of the present utility model;

FIG. 7 is a left side view of another clipper provided by an embodiment of the present utility model;

fig. 8 is an enlarged view of region B in fig. 7.

FIG. 9 is a simplified schematic diagram of vibration assisted cutting provided in an embodiment of the present utility model;

fig. 10 is a schematic structural view of a vibration device in a clipper according to an embodiment of the present utility model.

Reference numerals:

1-a frame; 11-a wire winding and unwinding area;

2-a carrying device;

3-cutting the head; 31-a headstock; 32-a cutting wheel; 33-a first guide wheel; 34-a second guide wheel; 35-wire passing wheel;

4-silicon rod;

5-a vibration device; 51-a vibration generator; 52-an amplitude transformer; 53-vibrating wheel;

6-cutting lines;

7-bracket.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of exemplary embodiments of the present utility model is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The embodiment provides a cutting machine for cutting a workpiece to be cut. The workpiece to be cut can be a workpiece made of hard and brittle materials such as photovoltaic silicon (single crystal silicon rod and polycrystalline silicon ingot), quartz crystal, silicon carbide, semiconductor, silicon nitride, sapphire, magnetic material, ceramic, hard alloy and the like. The cutting machine cuts the workpiece to be cut through the cutting line, and cuts the workpiece to be cut with a larger or longer size into the workpiece with a proper size. The cut line may be a thin wire coated with diamond abrasive particles.

The present embodiment will be described by taking a silicon rod as an example of a workpiece to be cut. Those skilled in the art can directly apply the solution provided in this embodiment to cutting other types of workpieces; the technical features of the technical scheme provided by the embodiment can be equally changed or replaced and then applied to other linear cutting equipment to cut other types of workpieces, and the technical scheme after the change or replacement falls into the protection scope of the utility model.

As shown in fig. 1 and 2, the present embodiment provides a cutter including: a frame 1, a carrying device 2 and a cutting head 3. Wherein, frame 1 is the major structure of clipper, and each part all sets up on frame 1. The bearing device 2 is arranged on the frame 1 and is used for bearing a workpiece to be cut. In this embodiment, the workpiece to be cut is specifically a silicon rod 4.

The frame 1 has a longitudinal direction (Y direction), a width direction (X direction), and a height direction (Z direction). The silicon rods 4 may be arranged along the length direction of the frame 1, i.e. the length direction of the silicon rods 4 is parallel to the Y-direction. The Z direction is vertical, and the X direction and the Y direction are both horizontal directions.

The number of the cutting heads 3 is plural, and the plural cutting heads 3 are sequentially arranged along the length direction of the frame 1. The cutting machine head 3 and the bearing device 2 can relatively move along the feeding direction, and the feeding direction is perpendicular to the length direction of the frame 1. The cutting machine head 3 can be fixed, and the bearing device 2 moves and feeds; the carrier device 2 can also be stationary, and the cutting head 3 can be moved for feeding. During the relative movement of the cutting head 3 and the carrying device 2 in the feeding direction, the cutting head 3 is used for forming a cutting section around the cutting line to cut the silicon rod 4 and cut off the silicon rod 4.

A vibration device 5 is provided on the cutting head 3 for applying ultrasonic vibrations to the cutting wire to cause the cutting wire to vibrate at high frequencies in the micrometer range. When the cutting line is used for macroscopic cutting of the silicon rod 4, micro-scale vibration generated by the cutting line can generate micro-machining on the silicon rod 4, so that an auxiliary effect is generated on the cutting of the silicon rod, and the two machining modes act together, so that the cutting precision and efficiency can be improved; and meanwhile, micro-machining is beneficial to reducing macroscopic acting force of the cutting line on the silicon rod 4, so that obvious line marks generated on the cutting surface of the silicon rod 4 by the cutting line are reduced, the consistency of the cutting surface is higher, cutting line seams are reduced, the loss of silicon rod raw materials is further reduced, and the cutting quality is improved.

During the operation of the cutting machine, the cutting machine head 3 is started first, the vibrating device 5 is started before the moving feeding, and the cutting is assisted by the vibrating device 5. After the cutting is finished, the vibration device 5 is closed, and then the operation of the cutting machine head 3 is stopped.

According to the technical scheme provided by the embodiment, a bearing device and a plurality of cutting machine heads are arranged on a rack, and the bearing device is used for bearing a workpiece to be cut; the plurality of cutting machine heads are sequentially arranged on the frame along the length direction of the frame; the cutting machine head and the bearing device can relatively move along the feeding direction, and a cutting line wound on the cutting machine head is used for cutting a workpiece to be cut in the feeding movement process; the ultrasonic vibration device is also adopted to apply ultrasonic vibration to the cutting line, so that the cutting line can generate high-frequency micron-sized vibration, micro machining can be generated when the workpiece to be cut is cut by the high-frequency vibration of the cutting line, the ultrasonic vibration has an auxiliary effect on the cutting process of the workpiece to be cut, the cutting precision and efficiency are improved, the macroscopic acting force of the cutting line on the workpiece to be cut is reduced, the consistency of the cutting surface of the workpiece to be cut is improved, the cutting quality is improved, and the yield is improved. And moreover, a plurality of cutting heads can cut the workpiece to be cut at the same time, so that the cutting efficiency is improved in a multiplied way.

The frequency of the ultrasonic vibration is generally 20000Hz or more, and the frequency of the ultrasonic vibration provided by the present embodiment is 20000Hz or more, called high-frequency ultrasonic vibration, the amplitude of which is in the order of micrometers.

Every cutting machine head 3 is provided with a vibration device 5, and when a plurality of cutting machine heads 3 synchronously cut, the consistency of the cutting machining of each cutting machine head 3 can be improved, and the consistency comprises the consistency of the cutting efficiency and the consistency of the cutting quality.

The feeding direction may be along the Z direction or along the X direction. In this embodiment, taking the feeding direction along the Z direction as an example, the carrying device 2 is disposed at the lower portion of the frame 1, and the cutting head 3 is disposed at the upper portion of the frame 1. The carrier device 2 moves upwards in a feeding manner, and the silicon rod 4 is cut through the cutting line wound on the cutting machine head 3.

A plurality of carrying devices 2 are used, which are arranged in sequence along the Y direction. The silicon rods 4 are arranged on all the bearing devices 2 or only part of the bearing devices 2, so that the cutter can cut the silicon rods 4 with different lengths, and the application range is wider. The bearing devices 2 can be arranged at equal intervals, or the bearing devices 2 can also move along the Y direction, so as to further meet the bearing requirements of the silicon rods 4 with different lengths. For example, a sliding rail is arranged at the bottom of the frame 1, and the bearing device 2 moves along the sliding rail and is locked and fixed after moving in place.

Accordingly, the plurality of cutting heads 3 may be arranged at equal intervals or may be arranged at unequal intervals. Alternatively, the position of the cutting head 3 may be adjustable, for example the cutting head 3 may be moved in the Y-direction to meet the cutting needs of different positions. For example, a slide rail is arranged at the top of the frame 1, and the cutting machine head 3 moves along the slide rail and is locked and fixed after moving in place.

Alternatively, the carrier device may be fixed, and the cutting head 3 may be moved downward for feeding. The cutting heads 3 can synchronously move downwards to feed, or the cutting heads 3 can move downwards to feed independently, so as to further meet the cutting requirements of different positions.

As shown in fig. 3, 4 and 5, the present embodiment further provides a cutting head 3 including: a headstock 31 and at least two cutting wheels 32. The frame 31 may be fixed on the frame 1, or slidably disposed on the frame 1.

At least two cutting wheels 32 are provided on the head frame 31, and a cutting wire is wound around a cutting section formed on the cutting wheels 32 to cut the silicon rod 4.

An embodiment employing long wire cutting is: and a take-up and pay-off mechanism is adopted for releasing the cutting line or storing the cutting line. The cutting wire released from one take-up and pay-off mechanism passes sequentially through the cutting wheels 32 on each cutting head 3, and is then stored in the other take-up and pay-off mechanism.

Specifically, as shown in fig. 1, a wire winding and unwinding area 11 is respectively provided at both ends of the frame 1 in the Y direction, and a wire winding and unwinding mechanism is provided in the wire winding and unwinding area 11. The cutting wire released from the wire winding and unwinding mechanism in the left wire winding and unwinding area 11 in fig. 1 is routed to the right, sequentially passes through the cutting wheels 32 on each cutting head 3, then enters the right wire winding and unwinding area 11 and is stored in the wire winding and unwinding mechanism.

The cutting line can also reciprocate between the two winding and unwinding mechanisms, namely, after the cutting line is stored in the winding and unwinding mechanism of the right winding and unwinding area 11 in the previous step, the right winding and unwinding mechanism starts to release the cutting line, and the cutting line runs leftwards and sequentially passes through the cutting wheels 32 on each cutting machine head 3, then enters the left winding and unwinding area 11 and is stored in the winding and unwinding mechanism.

Further, as shown in fig. 3, the cutter head 3 further employs a first guide wheel 33 and a second guide wheel 34. The first guide wheel 33 serves to guide the cutting wire 6 to the cutting wheel 32, and the second guide wheel 34 serves to guide the cutting wire 6 wound from the cutting wheel 32.

For the leftmost cutting head 3 in fig. 1, a first guiding wheel 33 is used for guiding the cutting wire released from the left take-up and pay-off mechanism to the cutting wheel on the cutting head 3, and the cutting wire 6 wound from the cutting wheel is guided to the right cutting head 3 by a second guiding wheel 34.

For the right-most cutting head 3 in fig. 1, the first guiding wheel 33 is used for guiding the cutting line led out from the left-hand cutting head 3 to the cutting wheel itself, and the cutting line wound out from the cutting wheel is guided to the take-up and pay-off mechanism stored on the right through the second guiding wheel 34.

For the centrally located cutting head 3 of fig. 1, the first guiding wheel 33 serves to guide the cutting line led out of the cutting head 3 to its own cutting wheel, and the cutting line wound out of the cutting wheel is guided to the right cutting head 3 by the second guiding wheel 34.

In the adjacent cutting heads 3, the positions of the first guide wheel 33 and the second guide wheel 34 are opposite, and the cutting section running directions between the two cutting wheels 32 are opposite.

In this embodiment, the second guiding wheel 34 is higher than the first guiding wheel 33, so as to guide the cutting line and enable the cutting line to move smoothly.

The present embodiment also provides an embodiment employing loop wire cutting: as shown in fig. 6, 7 and 8, the cutting line 6 is wound in a ring shape on the cutting wheels 32, and the cutting line between the two cutting wheels 32 forms a cutting section for cutting the silicon rod 4.

The ring wire cutting mode is adopted, so that each cutting machine head 3 can independently cut the silicon rod, and the silicon rod cutting machine can adapt to different cutting positions and has higher flexibility.

Further, a wire passing wheel 35 is arranged on the headstock 31, and a cutting wire is wound on the wire passing wheel 35 and the cutting wheel 32 to form a loop. One of the wire passing wheels 35 can be used to adjust the tension of the cutting wire.

The above technical solution can be summarized as the solution shown in fig. 9, in which the cutting line 6 between the two cutting wheels 32 forms a cutting segment for cutting the silicon rod 4. The vibration device 5 applies ultrasonic vibration to the cutting line 6 to drive the cutting line 6 to generate high-frequency micron-sized vibration.

Specifically, the vibration device 5 applies vibration along the feeding direction to the cutting line 6, so that the cutting line generates high-frequency vibration along the feeding direction, which is beneficial to improving the cutting efficiency and the cutting quality.

Specifically, the vibrating device 5 has one end fixed to the head frame 31 and the other end in contact with the cutting line 6 for imparting vibrations in the feeding direction to the cutting line 6.

The present embodiment also provides a vibration device, as shown in fig. 10, including: a power supply (not shown), a vibration generator 51, a horn 52, and a vibration wheel 53. Wherein the vibration generator 51 is connected to a power source for converting electric energy into mechanical vibrations. One end of the amplitude transformer 52 is connected to the vibration generator 51, and the other end is rotatably connected to the vibration wheel 53, and the vibration wheel 53 is in contact with the cutting line to apply ultrasonic vibration to the cutting line.

The vibration wheel 53 is rotatably connected to the horn 52, and the vibration wheel 53 is freely rotatable with respect to the horn 52. In the process of cutting line routing, the vibrating wheel 53 is driven to rotate, so that rolling friction is formed between the cutting line and the vibrating wheel 53, on one hand, friction force is reduced, and routing resistance of the cutting line is reduced; on the other hand, the cutting damage of the cutting line to the peripheral surface of the vibrating wheel 53 is reduced, the service life of the vibrating wheel 53 is prolonged, and the cutting quality and the cutting efficiency of the cutting line can be improved.

The peripheral face of the vibration wheel 53 is provided with an annular wire groove for accommodating a cutting wire, the cutting wire is embedded in the annular wire groove, the annular wire groove plays a limiting role on the cutting wire, and the cutting wire is always kept in the annular wire groove and vibrates, so that cutting quality is improved.

The present embodiment provides a specific solution, the vibrating wheel 53 includes a wheel body and a wheel axle. The wheel axle is rotatably arranged at the end part of the amplitude transformer 52, and the wheel body is fixedly connected with the wheel axle.

Another scheme is as follows: the wheel axle is fixed to the end of the horn 52 and the wheel body is rotatably connected to the wheel axle.

Specifically, the end of the horn 52 extends along its length to form two opposed vibrating arms that define a space therebetween for receiving the vibrating wheel 53. The wheel axle is rotatably arranged between the two vibrating arms. For example: the vibrating arms are provided with connecting holes for the wheel shafts to pass through, and the connecting holes on the two vibrating arms are coaxial. The connecting hole may be a through hole penetrating the vibrating arm, or may be a blind hole formed in the inner surface of the vibrating arm.

The vibration device 5 is mounted to the head frame 31 through the bracket 7. The bracket 7 is provided with a central hole through which the vibration device 5 passes and is fixed.

In the description of the present utility model, it should 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 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 configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While preferred embodiments of the present utility model 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A cutting machine, characterized by comprising:

a frame;

the bearing device is arranged on the frame and used for bearing a workpiece to be cut;

the cutting machine heads are sequentially arranged on the machine frame along the length direction of the machine frame; the cutting machine head and the bearing device can relatively move along the feeding direction, and the cutting machine head is used for winding a cutting line to cut a workpiece to be cut; the feeding direction is perpendicular to the length direction of the frame;

and a vibration device for applying ultrasonic vibration to the cutting line.

2. The clipper according to claim 1, wherein the frame is provided at a lower part of the carrying device; the cutting machine head is arranged at the upper part of the bearing device; the feeding direction is vertical.

3. The cutting machine according to claim 1, wherein the number of the carrying devices is plural, and the carrying devices are sequentially arranged along the length direction of the frame.

4. The cutoff machine according to claim 1, wherein the cutting head comprises:

a headstock;

the machine head frame is provided with a cutting wheel used for winding a cutting line so as to cut a workpiece to be cut.

5. The cutting machine according to claim 4, wherein the cutting wheels are adapted to wind an annular cutting line, the cutting line between the two cutting wheels forming a cutting section for cutting a workpiece to be cut.

6. The clipper of claim 4, further comprising: a winding and unwinding mechanism; the winding and unwinding mechanism is used for releasing the cutting line or storing the cutting line; the cutting wire released from one take-up and pay-off mechanism passes through the cutting wheels on each cutting head in turn and is then stored in the other take-up and pay-off mechanism.

7. The cutoff machine according to claim 6, wherein the cutting head further comprises: a first guide wheel and a second guide wheel; the first guide wheel is used for guiding the cutting line to the cutting wheel, and the second guide wheel is used for guiding the cutting line wound out of the cutting wheel.

8. The clipper according to claim 7, wherein the second guide wheel is higher than the first guide wheel.

9. The cutting machine according to claim 4, wherein the vibrating means has one end fixed to the head frame and the other end in contact with the cutting line for applying ultrasonic vibration in the feeding direction to the cutting line.

10. The cutoff machine according to claim 9, wherein the vibration device comprises:

a vibration generator for converting electrical energy into mechanical vibration;

one end of the amplitude transformer is connected with the vibration generator;

and the vibration wheel is rotationally connected with the other end of the amplitude transformer and is used for contacting with the cutting line to apply ultrasonic vibration to the cutting line.