CN219445662U - Wire cutting machine - Google Patents

Abstract

The utility model relates to the technical field of wire cutting equipment, in particular to a wire cutting machine, which aims to solve the problem that the health and environmental safety of workers are affected due to leakage of cutting fluid or powder in the conventional wire cutting machine. For this purpose, the wire cutting machine of the utility model comprises a cutting chamber, a protection cavity, a main exhaust pipeline, an auxiliary exhaust pipeline and an auxiliary exhaust pipeline, wherein the protection cavity is arranged in the cutting chamber, a first end of the main exhaust pipeline is communicated with the cutting chamber, a second end of the main exhaust pipeline is communicated with the outside, a first end of the auxiliary exhaust pipeline is communicated with the protection cavity, a second end of the auxiliary exhaust pipeline is communicated with the main exhaust pipeline, a first end of the auxiliary exhaust pipeline is communicated with the protection cavity, and a second end of the auxiliary exhaust pipeline is communicated with the main exhaust pipeline. The protection cavity can receive liquid and powder overflowed in the cutting chamber, and meanwhile, the auxiliary exhaust pipeline and the auxiliary liquid discharge pipeline are communicated in the protection cavity, so that liquid and powder diffusion can be avoided.

Description

Wire cutting machine

Technical Field

The utility model relates to the technical field of wire cutting equipment, and particularly provides a wire cutting machine.

Background

Wire cutting is a processing method for cutting a piece to be cut by a cutting wire by reciprocating the cutting wire at a high speed and relatively moving the cutting wire with respect to the piece to be cut (such as a material of a photovoltaic silicon rod, a semiconductor, silicon carbide, sapphire, a magnetic material, etc.). Taking the slicer as an example, the slicer is mainly used to cut hard brittle materials such as crystalline silicon, and current slicer is provided with the cutting chamber for carry out slicing operation, and the cutting line passes through the direction subassembly and goes into tension assembly and then goes into on turning to the subassembly, turns to the subassembly and guides the cutting line to cutting assembly on, and direction subassembly and tension assembly all set up in the cutting chamber outside, turn to the subassembly setting at the cutting chamber inside. In order to ensure efficient operation of the cutting line, it is necessary to add cutting fluid to the cutting chamber and spray it onto the cutting wire mesh and/or the workpiece to be cut, while during slicing, the cutting chamber is filled with splashed cutting fluid, cutting powder produced by cutting and gas produced by evaporation of the cutting fluid.

However, because the cutting chamber frame is required to be provided with the threading hole for the cutting line to pass through, the setting of the threading hole has the risk that silica flour is revealed, and the silica flour is revealed and is threatened to staff's health and surrounding environment safety. In addition, when the cutting fluid is sprayed in the cutting chamber, the cutting fluid may flow along the cutting line to other guide assemblies or tension assemblies outside the cutting chamber.

Accordingly, there is a need in the art for a new wire cutting machine that solves the problems of leakage of cutting fluid or powder in the existing wire cutting machine that affects the health and environmental safety of workers.

Disclosure of Invention

The utility model aims to solve the technical problems, namely the problems that the health and the environmental safety of workers are affected due to leakage of cutting fluid or powder in the traditional wire cutting machine.

In a first aspect, the present utility model provides a wire cutting machine comprising a cutting chamber, a protective chamber, and a drain and exhaust unit comprising a main exhaust line, a main drain line, an auxiliary exhaust line, and an auxiliary drain line; the protection chamber is arranged in the cutting chamber; the first end of the main exhaust pipeline is communicated with the cutting chamber, and the second end of the main exhaust pipeline is communicated with the outside; the first end of the main liquid discharge pipeline is communicated with the cutting chamber, and the second end of the main liquid discharge pipeline is communicated with the outside; the first end of the auxiliary exhaust pipeline is communicated with the protection cavity, and the second end of the auxiliary exhaust pipeline is communicated with the main exhaust pipeline; the first end of the auxiliary liquid discharge pipeline is communicated with the protection cavity, and the second end of the auxiliary liquid discharge pipeline is communicated with the main liquid discharge pipeline.

The protection cavity is communicated with the auxiliary exhaust pipeline and the auxiliary liquid discharge pipeline, so that liquid and silicon powder in the protection cavity can be effectively discharged, the influence of the liquid and the silicon powder on the steering assembly in the protection cavity is reduced, and the working stability of the steering assembly is improved.

In the above preferred technical solution of the wire cutting machine, the first end of the auxiliary exhaust pipe is communicated with the first end of the auxiliary drain pipe and then is communicated with the protection chamber, so that the first end of the auxiliary exhaust pipe and the first end of the auxiliary drain pipe share a gas-liquid inlet.

The auxiliary exhaust pipeline and the auxiliary liquid discharge pipeline share one outlet, namely a gas-liquid inlet, so that the number of the outlets for exhaust and liquid discharge can be reduced, and the protection cavity is more favorably set to be negative pressure.

In the above preferable technical solution of the wire cutting machine, the auxiliary drain pipe is disposed below the auxiliary exhaust pipe.

The liquid flows downwards, the auxiliary liquid discharge pipeline is arranged below the auxiliary gas discharge pipeline, so that the liquid is discharged more conveniently, the content of silicon powder entering the auxiliary liquid discharge pipeline is reduced, and the content of liquid entering the auxiliary gas discharge pipeline is also reduced.

In the above preferable technical solution of the wire cutting machine, the diameter of the auxiliary exhaust pipe is larger than the diameter of the auxiliary drain pipe.

The operation of the pump device in the auxiliary liquid discharge pipeline is facilitated, the possibility of idle running of the pump device is reduced, meanwhile, the space occupied by the auxiliary liquid discharge pipeline is reduced, and the cost is saved.

In the above preferable technical solution of the wire cutting machine, the position of the main exhaust pipe is higher than the position of the auxiliary exhaust pipe.

Because the silica flour wafts upwards, set up the main exhaust pipeline in the position that is higher than auxiliary exhaust pipeline, be favorable to collecting the silica flour from auxiliary exhaust pipeline to main exhaust pipeline more.

In the preferable technical scheme of the wire cutting machine, the gas-liquid inlet is arranged at the lowest part of the protection cavity.

Since the liquid flows downwards, the gas-liquid inlet should be arranged at the lowest part of the protection chamber.

In the above preferable technical scheme of the wire cutting machine, a water blocking disc is arranged at the bottom of the protection cavity, and the gas-liquid inlet is arranged on the water blocking disc.

In the above preferable technical solution of the wire cutting machine, the position of the main drain pipe is lower than the position of the auxiliary drain pipe.

Since the liquid is collected downwards, the liquid in the auxiliary drain line is more advantageously collected into the main drain line by arranging the main drain line lower than the auxiliary drain line.

In a preferred embodiment of the above wire cutting machine, the wire cutting machine further includes a vacuum pump, and the second end of the main exhaust pipe is in communication with the vacuum pump.

In the preferable technical scheme of the wire cutting machine, the wire cutting machine further comprises a liquid supply cylinder, and the second end of the main liquid discharge pipeline is communicated with the liquid supply cylinder.

In the preferable technical scheme of the wire cutting machine, the wire cutting machine is a slicing machine.

Under the condition that the technical scheme is adopted, the protection cavity is arranged in the cutting cavity, the main exhaust pipeline and the main liquid discharge pipeline are connected to the cutting cavity so as to discharge powder and liquid in the cavity, in the cutting process, part of liquid and powder in the cutting cavity move along the cutting line into the protection cavity, the protection cavity is used for protecting the steering assembly, meanwhile, the stability of the operation of the steering assembly is improved, the protection cavity is communicated with the auxiliary liquid discharge pipeline and the auxiliary liquid discharge pipeline so as to discharge the powder and the liquid in the protection cavity, one end of the auxiliary liquid discharge pipeline is connected to the main liquid discharge pipeline, one end of the auxiliary liquid discharge pipeline is connected to the main exhaust pipeline, the other end of the auxiliary liquid discharge pipeline and the other end of the auxiliary liquid discharge pipeline are connected to the same gas-liquid inlet of the protection cavity, and the same gas-liquid inlet is shared, so that the number of drain outlets of the protection cavity can be reduced, and the setting volume of the protection cavity is reduced.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in conjunction with a microtome, wherein:

preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a main frame and its internal structure of the slicer of the present utility model;

FIG. 2 is a schematic view of the operation of the cutting line of the microtome of the present utility model;

FIG. 3 is a diagram of the placement of a tension assembly of a prior art microtome;

FIG. 4 is a schematic view of a running wheel set of the microtome of the present utility model;

FIG. 5 is a cross-sectional view at A-A in FIG. 4;

FIG. 6 is a view of the positioning of the isolation door and shutter of the microtome of the present utility model on the microtome;

FIG. 7 is a schematic illustration of the connection of the isolation door to the shutter of the microtome of the present utility model;

FIG. 8 is a schematic view of the steering assembly of the microtome of the present utility model;

FIG. 9 is a schematic view of the threading bracket of the microtome of the present utility model;

fig. 10 is a gas-liquid inlet of the microtome of the present utility model.

List of reference numerals:

A. a main frame; 1. a cutting chamber; 11. a cutting assembly; 12. a shielding edge; 13. an isolation door; 2. a wire arranging chamber; 20. a wire arrangement assembly; 21. a wire releasing roller; 210. a wiring wheel set; 211. a guide wheel; 212. a housing; 212a, a second end face; 2120. an end cap; 2121. a raised annular ring; 2122. installing a rod; 213. a rotating shaft; 213a, a first end face; 214. a bearing; 2141. an inner ring; 2141a, a first side of the inner race; 2141b, a second side of the inner race; 2142. an outer ring; 2142a, a first side of the outer race; 2142b, a second side of the outer race; 2143. a mounting hole; 2144. a shaft end baffle; 22. a tension assembly; 221. a tension wheel; 23. a steering assembly; 230. a threading support; 231. a fixing part; 2311. fixing a main frame; 2312. bending and fixing the edges; 232. a carrying part; 2321. a diversion inclined plane; 233. a stop portion; 234. a wire penetrating groove; 235. a steering wheel; 236. a fixed bracket; 2370. a height adjusting block; 2371. an arc-shaped hole; 2372. an angle adjusting block; 2381. a slide rail; 2382. a slide block; 24. a guide assembly; 25. cutting lines; 3. a protective chamber; 31. a gas-liquid inlet; 32. an auxiliary liquid discharge pipeline; 33. and an auxiliary exhaust pipeline.

Detailed Description

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings in conjunction with a microtome. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application. For example, although the description has been given by taking a slicer as an example, the present utility model can be applied to other types of wire cutting machines, such as a squarer, etc., and these conventional wire cutting machines are all within the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; either mechanically or electrically. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

As shown in fig. 1 and 2, the slicer comprises a main frame a, a cutting chamber 1, a wire arranging chamber 2, a protection chamber 3, a cutting assembly 11 and a wire arranging assembly 20 are arranged in the main frame a, the protection chamber 3 is arranged in the cutting chamber 1, the cutting assembly 11 is arranged in the cutting chamber 1, the wire arranging assembly 20 comprises a wire paying-off roller 21, a guiding assembly 24, a tension assembly 22 and a steering assembly 23 arranged in the protection chamber 3, the wire paying-off roller 21 and the tension assembly 22 are both arranged in the wire arranging chamber 2, a cutting wire 25 on the wire paying-off roller 21 is led into the tension assembly 22 after passing through the guiding assembly 24, then enters the protection chamber 3 through the tension assembly 22 and is led into the steering assembly 23, and then penetrates out of the protection chamber 3 and enters the cutting chamber 1 to be connected with the cutting assembly 11, so that the cutting assembly 11 can perform cutting work through the cutting wire 25.

The slicing machine is mainly used for cutting hard and brittle materials such as crystalline silicon and the like, the process is mainly realized through repeated cutting of a cutting line 25, the slicing machine comprises a main frame A, a chamber is arranged in the main frame A and comprises a cutting chamber 1, a wire arranging chamber 2 and a protection chamber 3, the wire arranging chamber 2 is provided with a wire arranging assembly 20 and comprises a wire arranging roller 21, the wire arranging roller 21 is used for collecting and arranging the cutting line 25, the movement process of the cutting line 25 on the slicing machine is shown in figure 2, when the crystalline silicon is cut, the wire arranging roller 21 firstly arranges the cutting line 25, then the cutting line 25 is guided to a tension assembly 22 by a guide assembly 24, the tension assembly 22 tensions the cutting line 25, thereby providing a stable tension value for the cutting line 25, further ensuring that a wire net described below is always in an optimal tension state, the cutting line 25 moves towards a steering assembly 23 in the protection chamber 3 after being tensioned by the tension assembly 22, the steering assembly 23 adjusts the cutting line 25 according to the required direction and angle of the cutting line 25 to guide the cutting line 25 into the cutting chamber 1, so that the cutting line 25 is wound around the cutting assembly 11 in a suitable position to form a wire net, after which the cutting line 25 is passed out from the other end of the cutting chamber 1, passes through the steering assembly 23 at the other end of the cutting chamber 1 (here, the outlet end of the cutting line 25), passes through the tension assembly 22 and the guide assembly 24, and returns to the pay-off roller 21 (here, the function of the pay-off roller 21 is to take up the wire), and in addition, the steering assembly 23 at the other end of the cutting chamber 1 (here, the outlet end of the cutting line 25), the tension assembly 22 and the guide assembly 24 function in the same principle as the steering assembly 23, the tension assembly 22 and the guide assembly 24 described in the inlet end of the cutting chamber 1, when cutting crystalline silicon, the cutting line 25 is paid off through the paying-off roller 21 at the first end, the paying-off roller 21 at the second end is wound to enable the cutting line 25 to move in one direction, then the paying-off roller 21 at the second end is used for paying-off, the paying-off roller 21 at the first end is wound to enable the cutting line 25 to move in the opposite direction, the reciprocating motion of the cutting line 25 on the cutting assembly 11 can be achieved through winding and unwinding of the paying-off roller 21, and the cutting of crystalline silicon is achieved through a wire mesh formed by the cutting line 25 under the reciprocating motion.

As shown in fig. 3, in the prior art, the wire arranging assembly 20 of the slicer is provided with the wire arranging roller 21 inside the main frame a and the tension assembly 22 outside the main frame a, which makes the worker very inconvenient to wire back and forth inside the main frame a when assembling the cutting wire 25, increases the workload and the working time, and the utility model changes the overall structure layout, and the wire arranging assembly 20 is provided inside the main frame a, as shown in fig. 1, namely, the wire arranging roller 21, the guiding assembly 24, the tension assembly 22 and the steering assembly 23 are all inside the main frame a, thereby avoiding inconvenience caused by wire threading and improving the working efficiency.

In addition, in the prior art, the steering assembly is disposed in the cutting chamber 1, when the cutting fluid is sprayed into the cutting chamber 1, the cutting fluid easily flows onto the steering assembly 23 along the cutting line 25, and meanwhile, a part of the cutting fluid is directly sprayed onto the steering assembly 23, which is very unfavorable for the stability of the steering assembly 23, and in addition, because a part of powder such as silicon powder exists in the cutting chamber 1, the steering assembly 23 and the cutting line 25 thereon are damaged. The steering assembly 23 is arranged in the protection cavity 3, so that most of cutting fluid is prevented from being directly sprayed on the steering assembly 23, and meanwhile, the influence of silicon powder on the steering assembly 23 and the cutting lines 25 on the steering assembly is reduced. Since the steering assembly 23 is provided in the protection chamber 3 and the steering assembly 23 needs to receive the cutting line 25 guided from the tension assembly 22, a threading hole (not shown in the drawing) is provided on the protection chamber 3.

In the use process of the slicer, the cutting line 25 needs to be guided by using the guiding assembly 24, the tension assembly 22, the steering assembly 23 and the like (the position of each assembly in the slicer is shown in fig. 1, the guiding process is shown in fig. 2), the guiding assembly 24, the tension assembly 22 and the steering assembly 23 all comprise a wire running wheel set 210, the wire running wheel set 210 comprises a shell 212, a rotating shaft 213 and a rotating wheel, the rotating wheel in the guiding assembly 24 is a guide wheel 211, the rotating wheel in the tension assembly 22 is a tension wheel 221, the rotating wheel in the steering assembly 23 is a steering wheel 235, and the guiding wheel 211 is taken as an example as the guiding wheel 211, the tension wheel 221 and the steering wheel 235 are any one of the guiding wheels as shown in fig. 4. As shown in fig. 4 and 5, the housing 212 of the wiring wheel set 210 is fixedly disposed, the rotating shaft 213 is rotatably disposed in the housing 212, the guide wheel 211 is fixedly disposed at an end portion of the rotating shaft 213, a bearing 214 is disposed between the rotating shaft 213 and the housing 212, at this time, the bearing 214 is sleeved on the rotating shaft 213, the housing 212 is sleeved on the bearing 214, the bearing 214 includes an inner ring 2141 and an outer ring 2142, a mounting hole 2143 is disposed at an end of the bearing 214 far from the guide wheel 211, correspondingly, a shaft end baffle 2144 is disposed at the mounting hole 2143, a first end face 213a is disposed on the rotating shaft 213, a first side 2141a of the inner ring 2141 of the bearing 214 abuts against the first end face 213a, a second side 2141b of the inner ring 2141 of the bearing 214 abuts against the shaft end baffle 2144, and the shaft end baffle 2144 cooperates with the first end face 213a against two ends of the inner ring 2141 of the bearing 214 to fix the inner ring 2141 of the bearing 214 with the rotating shaft 213. The inner side of the housing 212 is further provided with a second end face 212a, a first side 2142a of the outer ring 2142 of the bearing 214 abuts against the second end face 212a, an end cover 2120 is further provided at an end of the housing 212, a protruding ring 2121 is provided on the end cover 2120, the protruding ring 2121 is inserted into the inner side of the housing 212 and abuts against a second side 2142b of the outer ring 2142 of the bearing 214, and the second end face 212a of the housing 212 cooperates with the protruding ring 2121 against both ends of the outer ring 2142 of the bearing 214 so that the bearing can be fixed in the housing 212. In addition, a mounting rod 2122 is disposed on a side of the end cap 2120 away from the protruding ring 2121, and a sealing ring (not shown) is disposed on the rotating shaft 213 between the bearing 214 and the guide wheel 211

The rotating shaft 213 and the guide wheel 211 in the structure are fixedly connected, the guide wheel 211 and the guide wheel 211 are coaxially rotated in the rotating process of the rotating shaft 213, the rotating shaft 213 is arranged in the shell 212, a bearing 214 is arranged between the shell 212 and the rotating shaft 213, the bearing 214 is sleeved on the rotating shaft 213 to support the rotating shaft 213 and reduce friction coefficient of the rotating shaft 213 in the running process, the inner ring 2141 of the bearing 214 is attached to the rotating shaft 213, the outer ring 2142 of the bearing 214 is attached to the shell 212, one side of the rotating shaft 213 is connected with the inner ring 2141 of the bearing 214 to enable the rotating shaft 213 to synchronously rotate with the inner ring 2141 of the bearing 214, the other side of the rotating shaft 213 is fixed with the guide wheel 211 to enable the guide wheel 211 to rotate together when rotating, at the same time, the rotating shaft 213, the guide wheel 211 and the inner ring 2141 of the bearing 214 simultaneously and coaxially rotate, the outer ring 2142 of the bearing 214 is fixed with the shell 212 to support the rotating shaft 213 and reduce friction coefficient in the rotating process.

The end of the bearing 214 far away from the guide wheel 211 is further provided with a mounting hole 2143, the rotating shaft 213 is provided with a hole corresponding to the mounting hole, correspondingly, the mounting hole 2143 is further provided with a shaft end baffle 2144, and the shaft end baffle 2144 fixedly connects the inner ring 2141 of the bearing 214 with the rotating shaft 213 through the mounting hole 2143 and the corresponding hole on the rotating shaft 213, so that the rotating shaft 213 and the inner ring 2141 of the bearing 214 synchronously rotate, and at this time, the second side 2141b of the inner ring 2141 of the bearing 214 abuts against the shaft end baffle 2144. The end of housing 212 is also provided with an end cap 2120, with a raised ring 2121 provided on end cap 2120, raised ring 2121 being inserted inside housing 212, and raised ring 2121 abutting against second side 2142b of outer race 2142 of bearing 214 to secure outer race 2142 of bearing 214 within housing 212. After the connection is completed, the rotating shaft 213 and the inner ring 2141 of the bearing 214 rotate synchronously in the housing 212, and meanwhile, the rotating shaft 213 drives the guide wheel 211 to rotate, and the housing 212 and the outer ring 2142 of the bearing 214 are fixedly connected together to support and protect the rotating shaft 213 and the inner ring 2141 of the bearing 214. A mounting bar 2122 is also provided on the side of end cap 2120 remote from raised ring 2121 for mounting the track set 210 to the microtome.

The cutting line 25 passes through the guide assembly 24, passes through the tension assembly 22, is stretched to an optimal tension state by the tension assembly, and is then transferred to the steering assembly 23, as shown in fig. 8 and 9, the steering assembly 23 comprises a fixing bracket 236, a steering wheel 235 and a threading bracket 230, the threading bracket 230 is fixedly arranged on the fixing bracket 236, the fixing bracket 236 is slidably arranged on the slicing machine, the steering wheel 235 is rotatably arranged on the fixing bracket 236, as shown in fig. 9, the threading bracket 230 comprises a fixing part 231 and a bearing part 232 which are mutually connected, a stop part 233 is further arranged on one side of the bearing part 232 away from the fixing part 231, and the threading groove 234 penetrates through the fixing part 231, the bearing part 232 and the stop part 233. The fixing portion 231 includes a fixing main frame 2311 and a bending fixing edge 2312, the fixing main frame 2311 is in an L-shaped plate shape, the bending fixing edge 2312 is disposed at an end of the fixing main frame 2311, the fixing main frame 2311 and the bending fixing edge 2312 may be welded, screwed or integrally formed, the bearing portion 232 includes a diversion inclined plane 2321, and the diversion inclined plane 2321 is disposed at two sides of the threading slot 234. It should be noted that the fixing main frame 2311, the bending fixing edge 2312 and the bearing portion 232 of the present utility model are integrally formed, and of course, the fixing main frame 2311, the bending fixing edge 2312 and the bearing portion 232 may be separately arranged according to the needs of those skilled in the art, which are all within the scope of the present utility model. As shown in fig. 8, the steering assembly 23 further includes a slide rail 2381 and a slider 2382, the slide rail 2381 is fixedly disposed on the slicer, the slider 2382 is slidably disposed on the slide rail 2381, and the fixing bracket 236 is fixedly disposed on the slider 2382. When the steering assembly 23 further includes the height adjusting block 2370, the height adjusting block 2370 may be slidably disposed on the fixing bracket 236, and the sliding direction of the height adjusting block 2370 is perpendicular to the sliding direction of the fixing bracket 236 (i.e., x-direction shown in fig. 8), in which case the steering wheel 235 is not directly disposed on the fixing bracket 236 but is rotatably disposed on the height adjusting block 2370, and the threading bracket 230 is also fixedly disposed on the height adjusting block 2370. When the steering assembly 23 further comprises an angle adjusting block 2372, the angle adjusting block 2372 is arranged on the height adjusting block 2370, the angle adjusting block 2372 can adjust the fixed bracket 236 and the steering wheel 235 by a certain angle according to the requirement of the cutting line 23, the angle adjusting block 2372 can be fixed at the adjusted angle position, the steering wheel 235 at the moment is rotatably arranged on the angle adjusting block 2372, and the threading bracket 230 is also fixedly arranged on the angle adjusting block 2372. Preferably, the track 2381 is configured as a double guide track 2381 to enhance the stability of the motion of the slider 2382. In addition, in the case where the steering assembly 23 includes the threading bracket 230, the partition door 13 is provided between the cutting chamber 1 and the outside, as shown in fig. 6 and 7, the shielding edge 12 is provided at the inside of the partition door 13, and the shielding edge 12 may overlap the carrying portion 232 of the threading bracket 230.

Since the steering assembly 23 can guide the cutting line 25 into the cutting chamber 1, the steering assembly 23 needs to include a structure capable of adjusting the direction thereof, the steering assembly 23 includes a slide rail 2381 and a slide block 2382, the slide block 2382 can slide in the length direction of the slide rail 2381 (i.e., the y direction shown in fig. 8), the fixing bracket 236 of the steering assembly 23 is arranged on the slide block 2382, and the steering wheel 235 is rotatably arranged on the fixing bracket 236, so that the steering wheel 235 can be guaranteed to rotate while moving in the length direction of the slide rail 2381, i.e., the y direction shown in fig. 8, and the position of the steering wheel 235 can be adjusted according to the position of the cutting line 25 entering the cutting chamber 1. In order to ensure the accuracy of the position of the cutting line 25 into the cutting chamber 1, a threading bracket 230 is further provided on the fixing bracket 236, and at this time, the cutting line 25 passing through the steering wheel 235 needs to be guided by the threading bracket 230 to enter the cutting chamber 1. The cutting line 25 passes through the threading groove 234 of the threading bracket 230, and since the threading groove 234 is of a fixed structure, the angle at which the cutting line 25 enters the threading groove 234 of the threading bracket 230 from the steering wheel 235 is fixed, and thus the relative positions of the threading bracket 230 and the rotating wheel 235 provided on the fixing bracket 236 are fixed.

The bending fixing edge 2312 of the fixing portion 231 of the threading bracket 230 is mounted on the fixing bracket 236, one end of the fixing main frame 2311 is connected with the bending fixing edge 2312, the other end of the fixing main frame 2311 is connected with the bearing portion 232, so that the fixing main frame 2311 can be fixed on the fixing bracket 236 and can support the bearing portion 232, the stopping portion 233 is connected with the other end of the bearing portion 232, the cutting line 25 passes through the steering wheel 235 and then passes through the threading groove 234 of the fixing main frame 2311, the bearing portion 232 and the stopping portion 233, and then is wound on the cutting assembly 11, and the fixing main frame 2311 is set to be L-shaped, so that a rotating space is reserved for the steering wheel 235, and the blocking of the steering wheel 235 caused by the rotation of the steering wheel 235 is avoided. In order to more accurately adjust the directions of the threading support 230 and the steering wheel 235, the threading support 230 and the steering wheel 235 are connected to the angle adjusting block 2372 together, the angle adjusting block 2372 is installed on the height adjusting block 2370, meanwhile, the height adjusting block 2370 is installed on the fixing support 236, the angle adjusting block 2372 is installed on the height adjusting block 2370 through bolts and arc holes 2371 matched with the angle adjusting block 2372 (shown in fig. 8), one end of the angle adjusting block 2372 is fixed, the other end of the angle adjusting block is adjusted on the arc of the arc holes 2371, the angle of the threading support 230 and the steering wheel 235 is adjusted through the bolts at the arc holes 2371, so that the cutting line 25 can be connected to the cutting assembly 11 at a proper angle, the height adjusting block 2370 can drive the angle adjusting block 2372 to move upwards in x direction through the cooperation of the bolts and the arc holes, after the position in x direction is adjusted through the height adjusting block 2370, the angle adjusting block 2372 is adjusted to a proper angle through the angle adjusting block 2372, and finally the threading support 230 and the steering wheel 235 are connected to the cutting assembly 11 at a proper angle.

In addition, since the protection chamber 3 is provided in the cutting chamber 1, and the cutting line 25 can enter the cutting chamber 1 through the protection chamber 3, in order to reduce the cutting fluid in the cutting chamber 1 from entering the protection chamber 3, the shielding edge 12 is provided on the isolation door 13, and the shielding edge 12 is provided in the cutting chamber 1. If the shielding edge 12 is arranged under the condition that the threading support 230 is not arranged, the shielding edge 12 can prevent the cutting line 25 from entering the cutting chamber 1, and meanwhile, the cutting line 25 can cut the shielding edge 12, the threading support 230 is arranged, the problem is avoided, and the cutting line 25 can move along the threading groove 234 and cannot cut the shielding edge 12 due to the fact that the threading groove 234 is arranged on the threading support 230. In addition, the shielding edge 12 is lapped on the bearing part 232 of the threading bracket 230, so that spraying of cutting fluid from the cutting chamber 1 can be shielded, and as the bearing part 232 comprises the diversion inclined plane 2321, namely, the inclined plane which is favorable for downward flowing of the fluid is arranged, the arrangement of the diversion inclined plane 2321 is favorable for downward flowing of the cutting fluid sprayed on the bracket to the bottom of the cutting chamber 1 along the inclined plane. The threading bracket 230 is further provided with the stop part 233, so that the stop part 233 can be matched with the shielding edge 12 to further reduce the possibility that the cutting fluid enters the protection cavity 3, and the shielding edge 12 can be prevented from being excessively shielded to influence the work of the cutting line 25 so as to be cut and split by the cutting line 25. In addition, the stop portion 233 is detachably connected with the bearing portion 232, the size and shape of the stop portion 233 can be selected according to the requirement, the stop portion 233 can be replaced at any time, and meanwhile cost is reduced.

Since the cutting chamber 1 of the microtome is also required to discharge the liquid, that is, the cutting fluid and powder or dust described above (the powder in this case is mainly silicon powder), it is necessary to provide a drainage and exhaust unit in the microtome, that is, to communicate the protection chamber 3 and the cutting chamber 1 with the exhaust and drain passages. As shown in fig. 10, the drainage and exhaust unit includes a main exhaust line (not shown), a main drain line (not shown), an auxiliary exhaust line 33, and an auxiliary drain line 32, the main exhaust line having a first end communicating with the cutting chamber 1 and a second end communicating with the outside, preferably the main exhaust line having a second end communicating with the vacuum pump. The first end of the main drain line communicates with the cutting chamber 1 and the second end communicates with the outside, preferably the second end of the main drain line communicates with the supply cylinder. The first end of the auxiliary exhaust pipeline 33 is communicated with the protection cavity 3, the second end is communicated with the main exhaust pipeline, the first end of the auxiliary liquid discharge pipeline 32 is communicated with the protection cavity 3, and the second end is communicated with the main liquid discharge pipeline. (the connection of the main exhaust line, the main exhaust line and the cutting chamber 1 is not shown in the drawing, and the connection of the main exhaust line and the auxiliary exhaust line 32, and the main exhaust line and the auxiliary exhaust line 33 are not shown in the drawing). The protection cavity 3 is internally provided with a gas-liquid inlet 31, and the first end of the auxiliary exhaust pipeline 33 is communicated with the first end of the auxiliary liquid discharge pipeline 32 and then is communicated with the protection cavity 3, so that the first end of the auxiliary exhaust pipeline 33 and the first end of the auxiliary liquid discharge pipeline 32 share one gas-liquid inlet 31. Preferably, the auxiliary drain line 32 is provided below the auxiliary drain line 33, while the diameter of the auxiliary drain line 33 may also be set larger than the diameter of the auxiliary drain line 32. In addition, the position of the main exhaust line may be set higher than the position of the auxiliary exhaust line 33, and the position of the main drain line may be set lower than the position of the auxiliary drain line 32. In order to better discharge the liquid and the gas out of the protection chamber 3, the gas-liquid inlet 31 is arranged at the lowest part of the protection chamber 3, and the gas-liquid inlet 31 is arranged on the water blocking disc 34 because the bottom of the protection chamber 3 is provided with the water blocking disc 34.

According to the slicing process of the slicer mentioned in the foregoing, a cutting assembly for winding the cutting line 25 to form a wire web is provided in the cutting chamber 1, and the wire web needs to be introduced onto the cutting assembly in the cutting chamber 1 by means of the steering wheel 235. In the prior art, the steering wheel 235 is arranged in the cutting chamber 1, and the cutting fluid, silicon powder and the like exist in the cutting chamber 1, so that the steering wheel 235 and the cutting line 25 on the steering wheel 235 are easily damaged, and meanwhile, the steering wheel 235 is easy to operate unstably. According to the utility model, the overall structure layout is changed, the steering wheel 235 is arranged in the protection cavity 3, after a period of time is required for the operation in the cutting chamber 1, cutting fluid is injected into the cutting chamber 1 at the moment, most of the cutting fluid moves to the bottom of the cutting chamber 1 after the cutting fluid is cooled down in the cutting chamber 25 and is discharged from the main liquid discharge pipeline, the other part of the cutting fluid flows onto the steering wheel 235 along the cutting line 25 so as to enter the protection cavity 3 and then falls onto the water baffle disc 34 in the protection cavity 3, and because the gas-liquid inlet 31 is arranged at the bottom of the protection cavity 3 and the gas-liquid inlet 31 is connected with the water baffle disc 34, the cutting fluid entering the water baffle disc 34 flows into the gas-liquid inlet 31 along the water baffle disc 34 and then flows into the auxiliary liquid discharge pipeline 32 connected with the gas-liquid inlet 31, and finally flows into the main liquid discharge pipeline along the auxiliary liquid discharge pipeline 32 and finally is discharged from the main liquid discharge pipeline. In addition, in addition to the cutting fluid, after a certain period of cutting operation, there is some powder or dust in the cutting chamber 1, for example, silicon powder or the like is generated when the cutting line 25 cuts crystalline silicon, which will be described below as an example, in order to avoid affecting the operation of the cutting line 25, and meanwhile, avoid abrasion of the cutting line 25 due to the silicon powder, the silicon powder needs to be discharged outside the cutting chamber 1, and in addition to being discharged by the main exhaust pipeline, a part of the silicon powder in the cutting chamber 1 overflows along the holes of the cutting line 25 and the threading bracket 230, so as to enter the protection chamber 3, or along with the cutting fluid entering the protection chamber 3 together, the silicon powder needs to be discharged outside the protection chamber 3 after entering the protection chamber 3, so as to avoid affecting the operation of the cutting line 25 in the protection chamber 3, an auxiliary exhaust pipeline 33 is connected in the protection chamber 3, and the silicon powder in the protection chamber 3 is sucked by the auxiliary exhaust pipeline 33 and then discharged outside the slicer through the vacuum dust suction pump. The cutting chamber 1 and the protection chamber 3 are set to be in a negative pressure state, so that silicon powder in the cutting chamber 1 and the protection chamber 3 is prevented from leaking to the outside of the slicing machine to further harm the health of staff and the environmental safety.

Further, since the liquid flows downward and the silicon powder generally floats in suspension in the air, the auxiliary drain line 32 is disposed below the main drain line, that is, the inlet of the auxiliary drain line 32 is disposed below the inlet of the auxiliary drain line 33, so that the liquid in the protection chamber 3 flows downward to a low position to be drained, and the silicon powder is drained in the auxiliary drain line 33 higher than the auxiliary drain line 32. If the auxiliary exhaust pipe 33 is lower than the auxiliary exhaust pipe 32, the liquid is exhausted from the auxiliary exhaust pipe 32 at the high position, and since the silicon powder is suspended, a part of silicon powder can enter the auxiliary exhaust pipe 32 at the high position preferentially, and at this time, the auxiliary exhaust pipe 32 comprises a part of silicon powder and cutting fluid, and since the auxiliary exhaust pipe 32 is connected with the pump device, the pump device is easily idle under the condition that most silicon powder is mixed in the auxiliary exhaust pipe 32, the service life of the pump device is reduced, and the auxiliary exhaust pipe 33 is arranged at the low position similarly. Based on this, the inlet of the auxiliary drain line 32 is disposed below the inlet of the auxiliary exhaust line 33. In addition, the pipe diameter of the auxiliary drain pipe 32 is set smaller than the pipe diameter of the auxiliary exhaust pipe 33, so that the possibility of idle running of a pump device connected with the auxiliary drain pipe 32 can be reduced, the occupied space of the auxiliary drain pipe 32 can be reduced, and meanwhile, the material and the cost can be reduced.

In addition, since the liquid flows in a lower direction by gravity, setting the main drain line lower than the auxiliary drain line 32 is more advantageous in that the liquid in the auxiliary drain line 32 is collected into the main drain line, and the powdered silicon powder is suspended in the air, which is easier to move upward, so setting the main drain line higher than the auxiliary drain line 33 is more advantageous in that the powder in the auxiliary drain line 33 is collected into the main drain line.

When the liquid in the main liquid discharge pipeline is not required to be recycled, the liquid in the main liquid discharge pipeline is discharged outside the slicing machine, and if the liquid in the main liquid discharge pipeline is required to be recycled, the second end of the main liquid discharge pipeline is communicated with the liquid supply cylinder so as to be recycled.

In summary, the flat cable assembly 20 is disposed inside the main frame a, that is, the flat cable roller 21, the guiding assembly 24, the tension assembly 22 and the steering assembly 23 are disposed inside the main frame a, so that inconvenience caused by threading is avoided, and thus, the working efficiency is improved. According to the utility model, the rotation radius is reduced by rotating the rotating shaft 213 to drive the guide wheel 211 to rotate instead of through the shell 212, the rotation inertia of the wiring wheel set 210 can be reduced and the running resistance of the wiring wheel set 210 can be reduced by rotating the rotating shaft 213 and the inner ring 2141 of the bearing 214 to drive the guide wheel 211 to rotate, so that the working efficiency of the wiring wheel set 210 is improved, the shaft end baffle 2144 fixedly connects the inner ring 2141 of the bearing 214 with the rotating shaft 213 through the mounting hole 2143 and the corresponding hole on the rotating shaft 213, so that the rotating shaft 213 and the inner ring 2141 of the bearing 214 synchronously rotate, and the convex circular ring 2121 is abutted on the second side 2142b of the outer ring 2142 of the bearing 214, so that the outer ring 2142 of the bearing 214 is fixed in the shell 212. The rotating shaft 213 and the inner ring 2141 of the bearing 214 synchronously rotate in the housing 212, and meanwhile, the rotating shaft 213 drives the guide wheel 211 to rotate, and the housing 212 and the outer ring 2142 of the bearing 214 are fixedly connected together to support and protect the rotating shaft 213 and the inner ring 2141 of the bearing 214.

Because the steering component 23 can guide the cutting line 25 into the cutting chamber 1, the steering component 23 needs to comprise a structure capable of adjusting the direction of the cutting line 25, the steering component 23 comprises a sliding rail 2381 and a sliding block 2382, the sliding block 2382 can slide in the length direction (y direction) of the sliding rail 2381, a fixed bracket 236 of the steering component 23 is arranged on the sliding block 2382, and a steering wheel 235 is arranged on the fixed bracket 236 in a rotatable manner, so that the steering wheel 235 can be ensured to rotate and simultaneously can move in the length direction of the sliding rail 2381, and the position of the steering wheel 235 can be adjusted according to the position of the cutting line 25 entering the cutting chamber 1. In order to ensure the accuracy of the position of the cutting line 25 entering the cutting chamber 1, the fixing bracket 236 is further provided with a threading bracket 230, the cutting line 25 is wound on the cutting assembly 11 through the fixing main frame 2311 of the threading bracket 230, the bearing part 232 and the threading groove 234 of the stopping part 233 after passing through the steering wheel 235, in order to reduce the cutting fluid in the cutting chamber 1 entering the protection chamber 3, the isolating door 13 is provided with a shielding edge 12, the shielding edge 12 is arranged in the cutting chamber 1, if the shielding edge 12 is arranged without the threading bracket 230, the shielding edge 12 can obstruct the cutting line 25 entering the cutting chamber 1, and meanwhile, the cutting line 25 can be cut to the shielding edge 12, and the arrangement of the threading bracket 230 avoids the problems.

After the steering wheel 235 is arranged in the protection chamber 3 and the cutting line 25 needs to be cooled and lubricated after a period of time is needed for working in the cutting chamber 1, at this time, cutting fluid is injected into the cutting chamber 1, a part of the cutting fluid flows onto the steering wheel 235 along the cutting line 25 to enter the protection chamber 3 and then falls onto the water baffle disc 34 in the protection chamber 3, and since the gas-liquid inlet 31 is arranged at the bottom of the protection chamber 3 and the gas-liquid inlet 31 is connected with the water baffle disc 34, the cutting fluid entering the water baffle disc 34 flows into the gas-liquid inlet 31 along the water baffle disc 34, then flows into the auxiliary liquid discharge pipeline 32 connected with the gas-liquid inlet 31, finally flows into the main liquid discharge pipeline along the auxiliary liquid discharge pipeline 32 and finally is discharged from the main liquid discharge pipeline. In addition, besides the cutting fluid, some silicon powder which is generated when the cutting line 25 cuts the crystal silicon exists in the cutting chamber 1, and a part of silicon powder overflows along the holes of the cutting line 25 to enter the protection chamber 3, or enters the protection chamber 3 along with the cutting fluid, in order to avoid affecting the work of the cutting line 25 in the protection chamber 3, an auxiliary exhaust pipeline 33 is connected in the protection chamber 3, and the silicon powder is sucked by the auxiliary exhaust pipeline 33 and then discharged into the main exhaust pipeline and then discharged out of the slicer.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (11)

1. The wire cutting machine is characterized by comprising a cutting chamber, a protection cavity and a drainage and exhaust unit, wherein the drainage and exhaust unit comprises a main exhaust pipeline, a main liquid exhaust pipeline, an auxiliary exhaust pipeline and an auxiliary liquid exhaust pipeline;

the protection chamber is arranged in the cutting chamber;

the first end of the main exhaust pipeline is communicated with the cutting chamber, and the second end of the main exhaust pipeline is communicated with the outside;

the first end of the main liquid discharge pipeline is communicated with the cutting chamber, and the second end of the main liquid discharge pipeline is communicated with the outside;

the first end of the auxiliary exhaust pipeline is communicated with the protection cavity, and the second end of the auxiliary exhaust pipeline is communicated with the main exhaust pipeline;

the first end of the auxiliary liquid discharge pipeline is communicated with the protection cavity, and the second end of the auxiliary liquid discharge pipeline is communicated with the main liquid discharge pipeline.

2. The wire cutting machine of claim 1, wherein the first end of the auxiliary exhaust line is in communication with the first end of the auxiliary drain line and then in communication with the guard chamber such that the first end of the auxiliary exhaust line and the first end of the auxiliary drain line share a single gas-liquid inlet.

3. The wire cutting machine according to claim 2, wherein the auxiliary drain line is provided below the auxiliary exhaust line.

4. A wire cutting machine according to claim 3, wherein the diameter of the auxiliary exhaust line is greater than the diameter of the auxiliary drain line.

5. The wire cutting machine of claim 1, wherein the primary exhaust line is located higher than the secondary exhaust line.

6. The wire cutting machine according to claim 2, wherein the gas-liquid inlet is provided at a lowest position of the guard chamber.

7. The wire cutting machine of claim 6, wherein a bottom of the protective chamber is provided with a water baffle plate, and the gas-liquid inlet is provided on the water baffle plate.

8. The wire cutting machine of claim 1, wherein the primary drain line is located lower than the secondary drain line.

9. The wire cutting machine of claim 1, further comprising a vacuum pump, wherein the second end of the main exhaust conduit is in communication with the vacuum pump.

10. The wire cutting machine of claim 1, further comprising a supply cylinder, wherein the second end of the main drain line is in communication with the supply cylinder.

11. The wire cutting machine of any one of claims 1-10, wherein the wire cutting machine is a microtome.