Cutter for removing burrs on surface of polycrystalline silicon bar

Abstract

The utility model relates to the technical field of cutters, and provides a cutter for removing burrs on the surface of a polycrystalline silicon bar, which comprises a cutter handle, a cutter head, a cutter head and a cutter head which are sequentially connected from top to bottom, a cutter bar; and a tool bit; wherein the tool bit is of a flat structure and is divided into a blocky connecting part and a tongue-shaped scraper knife part from top to bottom, and a knife edge of the scraper knife part is not edged. An electric pick is used as a carrier to replace manual work to drive the tool bit of the tool to move back and forth, unsmooth protrusions and burrs on the surface of a polycrystalline silicon rod can be rapidly removed through the tool edge of the scraper knife part, working efficiency can be effectively improved, and meanwhile the tool edge is not edged, so that the polycrystalline silicon rod can be rapidly removed. The effect of removing protrusions and burrs can be improved under the condition that the polycrystalline silicon rod body is not damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cutter technical field, concretely relates to a polycrystalline silicon rod surface burr removal uses cutter. BACKGROUND

[0002] Polycrystalline silicon is the direct raw material of single crystal silicon, and is also the electronic information basic material of contemporary artificial intelligence, automatic control, information processing, photoelectric conversion and other semiconductor devices. At present, the preparation methods of polycrystalline silicon mainly have the two kinds of improved siemens method and silane fluidized bed method, but the improved siemens method as the mainstream process of producing polycrystalline silicon is the most mature and widely used method in the world. Its principle is to pass high-purity hydrogen and trichlorosilane into the reduction furnace under the high voltage breakdown of high-purity silicon core, and to generate elemental silicon by hydrogen reduction of high-purity trichlorosilane at about 1100 DEG C and deposit on the surface of silicon core, gradually grow into polycrystalline silicon rod, so as to complete the production of polycrystalline silicon.

[0003] During the growth of polycrystalline silicon rod, the surface of polycrystalline silicon rod will appear uneven protrusions and burrs due to the complex variability of process and the existence of deposition process influencing factors. When these problems occur, the surface of polycrystalline silicon rod needs to be treated to remove uneven protrusions and burrs.

[0004] At present, the industry mostly uses silicon rod mutual friction or manual hard brush to polish the surface to remove uneven protrusions and burrs. However, these processing methods have low working efficiency and unsatisfactory removal effect of protrusions and burrs. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a polycrystalline silicon rod surface burr removal cutter to solve the problem of low working efficiency and unsatisfactory removal effect of protrusions and burrs in the prior art by using silicon rod mutual friction or manual hard brush to polish the surface of polycrystalline silicon rod.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A polycrystalline silicon rod surface burr removal cutter, comprising upper and lower sequentially connected:

[0008] A handle, the upper end of which is connected to an electric grabber;

[0009] A rod; and

[0010] A cutter head;

[0011] Among them, the cutter head is flat structure, and is divided into block-shaped connecting part and tongue-shaped spade part from top to bottom, and the cutting edge of the spade part is not sharpened.

[0012] In one embodiment of the present application, the upper end of the tool holder is a square head, which is detachably clamped in the chuck of the electric grabber;

[0013] The lower end of the tool holder is provided with a hexagonal stop ring and a stud in sequence, and the stud is threadedly connected to the first threaded hole in the upper end of the tool rod;

[0014] The lower end of the tool rod is provided with a notch, and the connecting part is connected to the notch in an interference fit.

[0015] In one embodiment of the present application, the cross-sectional dimension of the square head is 9.3mm*9.3mm.

[0016] In one embodiment of the present application, the second threaded hole is provided on the upper end of the tool rod on both sides of the notch for mounting the jackscrew.

[0017] The connecting part is provided with a recess on the side surface corresponding to the notch for accommodating the head of the jackscrew.

[0018] In one embodiment of the present application, the outer diameter of the tool rod is 20mm.

[0019] In one embodiment of the present application, the material of the tool rod is 45 steel.

[0020] In one embodiment of the present application, the tool rod is sleeved with a polyurethane tube matching its length.

[0021] In one embodiment of the present application, the length of the tool bit is 45mm, and the length of the cutting edge of the spade part is 40mm.

[0022] In one embodiment of the present application, the material of the tool bit is tungsten-cobalt alloy.

[0023] In one embodiment of the present application, the total length of the tool is 120-180mm.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The electric grabber is used as a carrier to replace manual operation to drive the tool bit of the tool to move back and forth, and the cutting edge of the spade part can quickly remove the protrusions and burrs on the surface of the polysilicon rod, which can effectively improve the work efficiency, and since the cutting edge is not sharp, the protrusions and burrs can be removed without damaging the polysilicon rod. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0027] Fig. 1 It is a perspective structural schematic view of the utility model;

[0028] Fig. 2 It is a front view structural schematic view of the utility model;

[0029] Fig. 3 It is a side view structural schematic view of the utility model;

[0030] Fig. 4 It is a perspective structural schematic view of the utility model;

[0031] Fig. 5 It is a perspective structural schematic view of the utility model;

[0032] Fig. 6 It is a perspective structural schematic view of the utility model. DETAILED DESCRIPTION

[0033] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0034] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0036] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0038] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0039] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0040] Referring to Figs. 1-6 As shown in the figure, the utility model provides a kind of cutter for removing polycrystalline silicon rod surface burr, including upper and lower connection in turn:

[0041] Tool shank 10, its upper end is connected to electric grab (not shown in the figure);

[0042] Tool shank 10, its upper end is connected to electric grab (not shown in the figure);

[0043] Tool shank 10, its upper end is connected to electric grab (not shown in the figure);

[0044] Among them, tool head 30 is flat structure, and it is divided into block-shaped connecting part 31 and tongue-shaped spade part 32 from top to bottom, and the cutting edge of spade part 32 is not opened.

[0045] Specifically, the upper end of the shank 10 is a square head 11 which is detachably clamped in the chuck of the electric grab; the lower end of the shank 10 is provided with a hexagonal retainer 12 and a stud 13 in sequence, and the stud 13 is threadedly connected in a first threaded hole 21 provided at the upper end of a shank rod 20; a notch 22 is provided at the lower end of the shank rod 20, and a connecting portion 31 is connected with the notch 22 in an interference fit. In use, the tool is clamped on the chuck of the electric grab, and then the electric grab is held by hand and started, so that the tool bit 30 moves back and forth, thereby quickly removing the protrusions and burrs on the surface of the polysilicon rod through the cutting edge of the spade 32. That is, the electric grab is used as a carrier to replace manual driving of the tool bit 30 of the tool to move back and forth, and the protrusions and burrs on the surface of the polysilicon rod can be quickly removed by the cutting edge of the spade 32, which can effectively improve the work efficiency, and since the cutting edge is not sharpened, the protrusions and burrs can be removed without damaging the polysilicon rod.

[0046] In the embodiment, the cross-sectional dimension of the square head 11 is 9.3mm*9.3mm.

[0047] In order to improve the connection strength between the tool bit 30 and the shank rod 20, a second threaded hole 23 is provided on the shank rod 20 at both sides of the notch 22 for installing a jackscrew (not shown in the figure); a recess is provided on the side of the connecting portion 31 corresponding to the notch 22 for accommodating the head of the jackscrew.

[0048] In the embodiment, the outer diameter of the shank rod 20 is 20mm.

[0049] In the embodiment, the material of the shank rod 20 is 45 steel.

[0050] In order to reduce or reduce the metal pollution of the tool to the polysilicon rod material, a polyurethane tube (not shown in the figure) with a length matching that of the shank rod 20 is sleeved on the shank rod 20.

[0051] In the embodiment, the length L2 of the tool bit 30 is 45mm, and the length L3 of the cutting edge of the spade 32 is 40mm.

[0052] In the embodiment, the material of the tool bit 30 is tungsten-cobalt alloy. Tungsten-cobalt alloy is a special material with high strength and good wear resistance, and will not cause metal pollution to the polysilicon rod material.

[0053] The shank rod 20 is detachable at the upper and lower ends, so that different lengths of the shank rod 20 can be replaced to adjust the length of the tool, thereby meeting the different length requirements in use and preventing the tool from being too long or too short to be used. By replacing the shank rod 20 with different lengths, the overall length L1 of the tool is 120-180mm, and 150mm is the preferred value of the overall length of the tool.

[0054] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application. Any technical solutions that can be realized on the basis of the above embodiments without creative labor should be considered to fall within the scope of protection of the present application.

Claims

1. A tool for removing surface burrs from a polysilicon rod, characterized by comprising: a base; a plurality of blades provided on the base; and a plurality of cutting edges provided on the plurality of blades. It comprises, in sequence from top to bottom: a handle, the upper end of which is connected to an electric grabber; a shank; and a head; wherein the head is flat in structure, and is divided into a block-shaped connecting part and a tongue-shaped spade part from top to bottom, the cutting edge of the spade part is not sharpened; the upper end of the handle is a square head, which is detachably clamped in the chuck of the electric grabber; the lower end of the handle is provided with a hexagonal stop ring and a stud in sequence, the stud is threadedly connected to a first threaded hole provided in the upper end of the shank; a notch is provided in the lower end of the shank, the connecting part is connected to the notch in an interference fit manner.

2. The polycrystalline silicon rod material surface burr removing tool according to claim 1, characterized by The cross-sectional dimension of the square head is 9.3mm*9.3mm.

3. The tool for removing surface burrs of a polycrystalline silicon rod according to claim 1 or 2, characterized in that: second threaded holes are provided in the shank on both sides of the notch, which are used for installing a jackscrew; a recess is provided in the side of the connecting part corresponding to the notch, which is used for accommodating the head of the jackscrew.

4. The polycrystal silicon rod material surface burr removing tool according to claim 3, wherein The outer diameter of the shank is 20mm.

5. The polycrystalline silicon rod material surface burr removing tool according to claim 1 or 4, characterized by The material of the shank is 45 steel.

6. The polycrystalline silicon rod material surface burr removing tool according to claim 5, characterized by A polyurethane tube is sleeved on the shank, which is adapted to the length of the shank.

7. The polycrystal silicon rod material surface burr removing tool according to claim 1, wherein The length of the head is 45mm, and the length of the cutting edge of the spade part is 40mm.

8. The polycrystalline silicon rod material surface burr removing tool according to claim 1 or 7, characterized by, The material of the head is tungsten-cobalt alloy.

9. The polycrystal silicon rod material surface burr removing tool according to claim 8, wherein The overall length of the tool is 120-180mm.

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