CN219768739U - 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 existing wire cutting machine cannot well protect a steering assembly or the steering assembly cannot work stably. For this purpose, the wire cutting machine of the utility model comprises a cutting chamber, a protection chamber, a cutting mechanism and a wire routing mechanism, wherein the protection chamber is arranged in the cutting chamber, the cutting mechanism is arranged in the cutting chamber, the wire routing mechanism comprises a steering assembly, the steering assembly is configured to enable the cutting wire to be wound on the cutting mechanism after being turned, so that the cutting mechanism can perform cutting work through the cutting wire, and the steering assembly is arranged in the protection chamber. Compared with the prior art that the steering assembly is directly arranged in the cutting cavity, the steering assembly is directly arranged in the protection cavity, so that the steering assembly is protected from being influenced by cutting fluid and silicon powder as little as possible, and the working stability of the steering assembly is ensured.

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

The wire cutting machine is equipment for cutting materials to be cut (such as silicon rods, semiconductors, silicon carbide, sapphires, magnetic materials and the like) through high-speed reciprocating motion of a cutting wire, the slicing process is realized through the slicing machine, cutting fluid needs to be sprayed in a cutting area of the slicing machine, powder (such as silicon powder) generated after cutting operation is suspended in the cutting area and mixed into the cutting fluid, the sprayed cutting fluid flows into a wire feeding mechanism along the cutting wire, the cutting wire leaves the cutting mechanism and then bypasses a steering assembly, and therefore the cutting fluid and the silicon powder mixed into the cutting fluid influence normal operation of a steering wheel and even damage the steering wheel. The slicer is only one type of wire cutting machine, and other wire cutting machines such as squarers have the problems described above.

Accordingly, there is a need in the art for a new wire cutting machine that solves the problem that the existing wire cutting machines do not well protect the steering assembly or the steering assembly does not work stably.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing wire cutting machine cannot well protect a steering assembly or the steering assembly cannot work stably.

In a first aspect, the present utility model provides a wire cutting machine comprising a cutting chamber, a guard chamber, a cutting mechanism, and a routing mechanism; the wire feeding mechanism comprises a steering assembly, and the steering assembly is configured to enable the cutting wire to be wound around the cutting mechanism after steering, so that the cutting mechanism can perform cutting work through the cutting wire; the protection cavity is arranged in the cutting cavity, and the cutting mechanism is arranged in the cutting cavity; the steering assembly is disposed within the protective chamber.

The steering assembly is arranged in the protection cavity, compared with the prior art that the steering assembly is directly arranged in the cutting cavity, the influence of cutting fluid on the steering assembly arranged in the protection cavity is greatly reduced, so that the working stability of the steering assembly is increased, the entering of silicon powder into the cutting cavity can be reduced, the damage of the silicon powder to the cutting line in the steering assembly is reduced, and the service life of the steering assembly and the cutting line is prolonged.

In the preferable technical scheme of the wire cutting machine, an isolation door is arranged between the cutting chamber and the outer side, the protection chamber is arranged at the inner side of the isolation door, a shielding edge is arranged at the inner side of the isolation door, and the shielding edge forms a top cover of the protection chamber; and/or the steering assembly includes a steering wheel.

Most of the liquid can be shielded through the arrangement of the shielding edge, so that the liquid is effectively prevented from entering the protection cavity.

In the preferred technical scheme of the wire cutting machine, the steering assembly further comprises a fixed support and a threading support, the fixed support is slidably arranged on the wire cutting machine, the steering wheel is rotatably arranged on the fixed support, the threading support is fixedly arranged on the fixed support, the threading support is provided with a threading groove, and the threading groove is used for guiding the cutting wire to extend from the inner side of the protection cavity to the outer side of the protection cavity.

The steering wheel and the threading support are fixedly arranged on the fixing support which is in sliding connection, so that the position of the fixing support can be adjusted according to the position required by the cutting line, and the cutting line enters the cutting cavity at the optimal position.

In the above-mentioned preferable technical scheme of the wire cutting machine, a portion of the threading bracket is disposed between the shielding edge and the steering wheel waterproof assembly, and the threading bracket extends from the inner side of the protection chamber to the outer side of the protection chamber.

In the above-mentioned preferred technical scheme of wire cutting machine, the steering assembly further includes a sliding rail and a sliding block, the sliding rail is fixedly arranged on the wire cutting machine, the sliding block is slidably arranged on the sliding rail, and the fixing support is fixedly arranged on the sliding block.

In the above-mentioned preferred technical solution of the wire cutting machine, the steering assembly further includes a height adjusting block, the height adjusting block is slidably disposed on the fixed support, and the sliding direction of the height adjusting block is perpendicular to the sliding direction of the fixed support, the steering wheel is rotatably disposed on the height adjusting block, and the threading support is fixedly disposed on the height adjusting block.

In the above-mentioned preferred technical scheme of the wire cutting machine, the threading support includes a fixing portion and a bearing portion connected to each other, a stop portion is further provided on a side of the bearing portion away from the fixing portion, and the threading slot passes through the fixing portion, the bearing portion and the stop portion.

The threading groove is arranged on the threading support, so that the cutting line can enter the cutting cavity after passing through the threading groove, and the stability of the cutting line in operation is improved.

In the preferable technical scheme of the wire cutting machine, the wire cutting machine further comprises a main frame, the wire routing mechanism is located on the inner side of the main frame, and the wire routing mechanism further comprises a wire winding and unwinding assembly, a guiding assembly and a tension assembly.

In the preferable technical scheme of the wire cutting machine, the steering wheel is arranged at one side close to the isolation door in the protection cavity.

In the preferred technical scheme of the wire cutting machine, the protection cavity further comprises a side water baffle, a steering wheel waterproof assembly and a water baffle plate, wherein the steering wheel waterproof assembly is arranged below the shielding edge, the side water baffle is arranged on one side opposite to the steering wheel waterproof assembly and located below the isolation door, the water baffle plate is arranged at a position, close to the inner side, below the side water baffle plate, of the isolation door, the shielding edge, the steering wheel waterproof assembly, the water baffle plate and the side water baffle plate enclose the protection cavity together.

In the preferable technical scheme of the wire cutting machine, the wire cutting machine further comprises 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 first end of the main exhaust pipeline is communicated with the cutting cavity, 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 cavity, 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 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 arrangement of negative pressure in the protection cavity is more facilitated.

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 preferable technical scheme of the wire cutting machine, the position of the main exhaust pipeline is higher than that of the auxiliary exhaust pipeline; and/or the position of the main liquid discharge pipeline is lower than that of the auxiliary liquid discharge pipeline.

Because the silicon powder floats upwards, the main exhaust pipeline is arranged at a position higher than the auxiliary exhaust pipeline, and the silicon powder is more beneficial to collecting from the auxiliary exhaust pipeline to the main exhaust pipeline; 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 the above preferable technical scheme of the wire cutting machine, the bottom of the protection chamber is a water blocking disc, the gas-liquid inlet is arranged on the water blocking disc, and the gas-liquid inlet is arranged at the lowest part of the protection chamber.

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

Through the arrangement mode, the steering assembly is influenced by the cutting fluid and the silicon powder in the cutting chamber as little as possible under the protection of the protection chamber, so that the working stability of the steering assembly is ensured, the damage of the silicon powder to the cutting line on the steering assembly is reduced due to the arrangement of the protection chamber, the steering assembly further comprises a fixed support, a threading support and a steering wheel, the steering wheel can move on a sliding rail under the driving of the fixed support, the cutting line on the steering wheel can enter the cutting chamber at the optimal position or leave from the cutting chamber, meanwhile, the cutting line can enter the cutting chamber through the threading groove, the cutting line can enter the cutting chamber more stably due to the arrangement of the threading groove, and in addition, the steering assembly further comprises an angle adjusting block capable of adjusting the angle of the steering wheel and a height adjusting block capable of adjusting the height of the steering wheel for better position adjustment of the cutting line. In addition, the protection cavity is also communicated with the auxiliary liquid discharging pipeline and the auxiliary air discharging pipeline, the auxiliary liquid discharging pipeline can discharge cutting fluid entering the protection cavity, and the auxiliary air discharging pipeline can discharge silicon powder in the protection cavity.

Drawings

The preferred embodiments of the present utility model will be described below by way of example of a wire cutting machine 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;

fig. 11 is a cross-sectional view of the guard chamber of the microtome of the present utility model.

List of reference numerals:

A. a main frame; 1. a cutting chamber; 11. a cutting mechanism; 12. a shielding edge; 13. an isolation door; 2. a take-up and pay-off chamber; 20. a wiring mechanism; 21. a wire releasing roller; 210. a wiring wheel set; 211. a winding displacement 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; 2131. a bearing mounting portion; 2132. an intermediate rotating part; 2132a, a first end face; 2133. a wheel mounting portion; 2134. a mounting hole; 2135. a shaft end baffle; 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; 215. a nut; 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. an auxiliary exhaust pipeline; 34. a water blocking disc; 35 steering wheel waterproof assembly; 36. side water baffle.

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 is 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 winding and unwinding chamber 2, a protection chamber 3, a cutting mechanism 11 and a wire routing mechanism 20 are arranged in the main frame a, the protection chamber 3 is arranged in the cutting chamber 1, the cutting mechanism 11 is also arranged in the cutting chamber 1, the wire routing mechanism 20 comprises a wire winding and unwinding assembly (the wire winding and unwinding assembly is described by taking a wire unwinding roller 21 as an example below), a guiding assembly 24, a tension assembly 22 and a steering assembly 23 arranged in the protection chamber 3, the wire unwinding roller 21 and the tension assembly 22 are arranged in the wire winding and unwinding chamber 2, a cutting wire 25 released by the wire unwinding roller 21 is led to the tension assembly 22 after passing through the guiding assembly 24, then enters the protection chamber 3 and is led to the steering assembly 23 through the tension assembly 22, then penetrates out of the protection chamber 3 and enters the cutting chamber 1 to be connected with the cutting mechanism 11, so that the cutting mechanism 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 winding and unwinding chamber 2 and a protection chamber 3, the winding and unwinding chamber 2 is provided with a wiring mechanism 20, the wiring mechanism comprises a winding and unwinding roller 21, the winding and unwinding roller 21 is used for winding and unwinding the cutting line 25, the cutting line 25 moves on the slicing machine, when the crystalline silicon is cut, the winding and unwinding roller 21 firstly releases the cutting line 25, then the cutting line 25 is guided to a tension component 22 by a guide component 24, the tension component 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 component 23 in the protection chamber 3 after being tensioned by the tension component 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 mechanism 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 the crystalline silicon, the cutting line 25 is paid off by the paying-off roller 21 at the first end, the paying-off roller 21 at the second end is wound up 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 up to enable the cutting line 25 to move in the opposite direction, the reciprocating movement of the cutting line 25 on the cutting mechanism 11 can be achieved through the winding-up and paying-off of the paying-off roller 21, and the cutting of the crystalline silicon is achieved through a wire mesh formed by the cutting line 25 under the reciprocating movement.

As shown in fig. 3, in the prior art, the wire feeding mechanism 20 of the slicer is provided with the wire feeding roller 21 inside the main frame a, and the tension assembly 22 is provided outside the main frame a, which makes it very inconvenient for workers to wire back and forth inside the main frame a when assembling the cutting wires 25, and increases the workload and the working time.

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 component 24, the tension component 22, the steering component 23 and the like (the position of each component in the slicer is shown in fig. 1, the guiding process is shown in fig. 2), the guiding component 24, the tension component 22 and the steering component 23 all comprise a wire-laying wheel set 210, the wire-laying wheel set 210 comprises a shell 212, a rotating shaft 213 and a rotating wheel, the rotating wheel in the guiding component 24 is a wire-laying wheel 211, the rotating wheel in the tension component 22 is a tension wheel 221, the rotating wheel in the steering component 23 is a steering wheel 235, and the wire-laying wheel 211 is taken as an example as shown in fig. 4 because the rotating wheel can be any one of the wire-laying wheel 211, the tension wheel 221 and the steering wheel 235. 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 wiring 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 rotating shaft 213 specifically includes a bearing mounting portion 2131, an intermediate rotating portion 2132 and a rotating wheel mounting portion 2133 which are sequentially connected, at this time, the wiring wheel 211 is fixedly disposed on the rotating wheel mounting portion 2133, the bearing 214 is sleeved on the bearing mounting portion 2131, the housing 212 is sleeved on the bearing 214, the bearing 214 includes an inner ring 2141 and an outer ring 2142, an end of the rotating shaft 213 away from the wiring wheel 211 is further provided with a mounting hole 2134, an end baffle 2135 is further disposed at an end of the rotating shaft 213 away from the wiring wheel 211, the end baffle 2135 is connected to the mounting hole 2134 by a threaded connection, a first end surface 2132a is disposed on the rotating shaft 213, a first side 1a of the inner ring 2141 of the bearing 214 abuts against the first end surface 2132a, a second side 2141b of the bearing 214 abuts against the inner ring 2141 against the end 2135 of the bearing 214, and the end 2131 abuts against the end 2135 of the bearing 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 bar 2122 is provided on the side of end cap 2120 remote from raised ring 2121, and a thread (not shown) is provided on mounting bar 2122, and mounting bar 2122 is threaded onto mounting bar 2122 after passing through a corresponding mounting hole on the microtome, thereby securing housing 212 of cabling wheel assembly 210 to the microtome in a corresponding position.

The rotating shaft 213 and the winding displacement wheel 211 in the above structure are fixedly connected, so that the winding displacement wheel 211 and the winding displacement wheel 211 rotate coaxially 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 the 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 rotate synchronously with the inner ring 2141 of the bearing 214, the other side of the rotating shaft 213 is fixed with the winding displacement wheel 211 to enable the winding displacement wheel 211 to rotate together when rotating, at the moment, the rotating shaft 213, the winding displacement wheel 211 and the inner ring 2141 of the bearing 214 simultaneously rotate coaxially, and the outer ring 2142 of the bearing 214 is fixed with the shell 212 to support the rotating shaft 213 and the inner ring 2141 of the bearing 214, and the friction coefficient in the running process is reduced simultaneously.

The end of the rotating shaft 213 away from the wire arranging wheel 211 is further provided with a mounting hole 2134 and a shaft end baffle 2135, the shaft end baffle 2135 is connected to the mounting hole 2134 through a threaded connector, and the second side 2141b of the inner ring 2141 of the bearing 214 abuts against the shaft end baffle 2135, so that the inner ring 2141 of the bearing 214 is fixedly connected with the rotating shaft 213, so that the rotating shaft 213 and the inner ring 2141 of the bearing 214 synchronously rotate. 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 the rotating shaft 213 drives the winding displacement 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 isolation door 13 is provided between the cutting chamber 1 and the outside, the shielding chamber 3 is provided inside the isolation door 13, as shown in fig. 6 and 7, the shielding edge 12 is provided inside the isolation door 13, the shielding edge 12 forms the top cover of the shielding chamber 3, and the shielding edge 12 may overlap the carrying portion 232 of the threading bracket 230, and the steering wheel 235 is provided at a position close to the isolation door 13 inside the shielding chamber 3. In addition, as shown in fig. 11, the protection chamber 3 further includes a side water baffle 36 and a steering wheel waterproof assembly 35, the bottom of the protection chamber 3 is a water baffle 34, the side of the protection chamber 3 is a side water baffle 36, the isolation door 13 is disposed on the upper side of the side water baffle 36, the shielding edge 13 disposed on the inner side of the isolation door 13 is further provided with the steering wheel waterproof assembly 35, the threading support 230 is disposed between the shielding edge 13 and the steering wheel waterproof assembly 35, the threading support 230 extends from the inner side of the protection chamber 3 to the outer side of the protection chamber 3, and the above arrangement enables the isolation door 13, the shielding edge 12, the steering wheel waterproof assembly 35, the water baffle 34 and the side water baffle 36 to enclose the protection chamber 3 together.

Since the steering assembly 23 guides the cutting wire 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 disposed on the slide block 2382, and the steering wheel 235 is rotatably disposed on the fixing bracket 236, so that the steering wheel 235 can be rotated while moving in the length direction of the slide rail 2381, i.e., the y direction shown in fig. 8, and thus the position of the steering wheel 235 can be adjusted according to the position of the cutting wire 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 mechanism 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 mechanism 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 mechanism 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 entry of the cutting fluid in the cutting chamber 1 into 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 without the threading support 230, the shielding edge 12 can prevent the cutting line 25 from entering the cutting cavity 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 the 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 comprises a main exhaust line (not shown), a main drain line (not shown), an auxiliary exhaust line 33 and an auxiliary drain line 32, the first end of the main exhaust line being in communication with the cutting chamber 1 and the second end being in communication with the outside, preferably the second end of the main exhaust line being in communication 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 connections of the main and main drain lines to the cutting chamber 1 and the main and auxiliary drain lines 32, 33 are not shown in the figures). 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 above, a wire mesh of operative cutting wires 25 is provided in the cutting chamber 1, which wire mesh needs to be introduced into 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 easily unstable to operate. 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 cavity 1, cutting fluid is injected into the cutting cavity 1 at the moment, most of the cutting fluid moves to the bottom of the cutting cavity 1 after the cutting fluid is cooled down in the cutting cavity 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 is described below as an example, in order to avoid affecting the operation of the cutting line 25, and meanwhile, to avoid abrasion of the cutting line 25 due to the silicon powder, the silicon powder needs to be discharged out of 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 out of 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, and to be provided with the auxiliary exhaust pipeline 33, the silicon powder in the protection chamber 3 is sucked by the auxiliary exhaust pipeline 33 and then discharged out of the slicer through the vacuum dust suction pump. It should be noted that, set up cutting cavity 1 and protection cavity 3 in negative pressure state, avoid cutting cavity 1 and protection cavity 3 in the silica flour leak outside the slicer and then harm staff's health and harm environmental security.

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 routing mechanism 20 is disposed inside the main frame a, that is, the wire releasing roller 21, the guiding component 24, the tension component 22 and the steering component 23 are disposed inside the main frame a, so that inconvenience caused by threading is avoided, and thus, the working efficiency is improved. The utility model drives the winding displacement wheel 211 to rotate through the rotation of the rotation shaft 213 instead of through the shell 212, so that the rotation radius is reduced, 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 utilizing the rotation shaft 213 and the rotation of the inner ring 2141 of the bearing 214 to drive the winding displacement wheel 211 to rotate, thereby improving the working efficiency of the wiring wheel set 210, and the shaft end baffle 2135 is connected to the mounting hole 2134 through the threaded connecting piece so as to fixedly connect the inner ring 2141 of the bearing 214 with the rotation shaft 213, so that the rotation 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 rotate synchronously in the housing 212, and meanwhile, the rotating shaft 213 drives the winding displacement wheel 211 to rotate, and the housing 212 and the outer ring 2142 of the bearing 214 are fixedly connected together so as to support and protect the rotating shaft 213 and the inner ring 2141 of the bearing 214.

Because 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 of the cutting line 25, the steering assembly 23 includes a slide rail 2381 and a slide block 2382, the slide block 2382 can slide in the length direction (y direction) of the slide rail 2381, a 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 ensured to rotate and simultaneously can move in the length direction of the slide 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 mechanism 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 required for the operation in the cutting chamber 1, at this time, the 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 blocking 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 blocking disc 34, the cutting fluid entering the water blocking disc 34 flows into the gas-liquid inlet 31 along the water blocking disc 34, then flows into the auxiliary liquid discharging pipeline 32 connected with the gas-liquid inlet 31, finally flows into the main liquid discharging pipeline along the auxiliary liquid discharging pipeline 32 and finally is discharged from the main liquid discharging 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 protecting chamber 3, or enters the protecting chamber 3 along with the cutting fluid, in order to avoid affecting the work of the cutting line 25 in the protecting chamber 3, an auxiliary exhaust pipeline 33 is connected in the protecting 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 (17)

1. The wire cutting machine is characterized by comprising a cutting chamber, a protection chamber, a cutting mechanism and a wire-running mechanism; the wire feeding mechanism comprises a steering assembly, and the steering assembly is configured to enable the cutting wire to be wound around the cutting mechanism after steering, so that the cutting mechanism can perform cutting work through the cutting wire;

the protection cavity is arranged in the cutting cavity, and the cutting mechanism is arranged in the cutting cavity;

the steering assembly is disposed within the protective chamber.

2. The wire cutting machine according to claim 1, wherein an isolation door is provided between the cutting chamber and the outside, the protection chamber is provided inside the isolation door, a shielding edge is provided inside the isolation door, and the shielding edge forms a top cover of the protection chamber; and/or the number of the groups of groups,

The steering assembly includes a steering wheel.

3. The wire cutting machine of claim 2, wherein the steering assembly further comprises a fixed bracket slidably disposed on the wire cutting machine and a threading bracket rotatably disposed on the fixed bracket, the threading bracket being fixedly disposed on the fixed bracket and having a threading slot thereon for guiding the cutting wire to extend from the inside of the protective chamber to the outside of the protective chamber.

4. A wire cutting machine according to claim 3, wherein a portion of the threading support is disposed between the shielding edge and the steering wheel waterproof assembly, the threading support extending from the inside of the protective chamber to the outside of the protective chamber.

5. The wire cutting machine of claim 3, wherein the steering assembly further comprises a slide rail fixedly disposed on the wire cutting machine and a slider slidably disposed on the slide rail, the fixed bracket being fixedly disposed on the slider.

6. The wire cutting machine according to claim 3, wherein the steering assembly further comprises a height adjustment block slidably provided on the fixed bracket, and a sliding direction of the height adjustment block is perpendicular to a sliding direction of the fixed bracket, the steering wheel is rotatably provided on the height adjustment block, and the threading bracket is fixedly provided on the height adjustment block.

7. A wire cutting machine according to claim 3, wherein the threading bracket comprises a fixing portion and a carrying portion which are connected with each other, a stop portion is further provided on a side of the carrying portion away from the fixing portion, and the threading groove passes through the fixing portion, the carrying portion and the stop portion.

8. The wire cutting machine of claim 1, further comprising a main frame, wherein the wire routing mechanism is located inside the main frame, and wherein the wire routing mechanism further comprises a take-up and pay-off assembly, a guide assembly, and a tension assembly.

9. The wire cutting machine of claim 2, wherein the steering wheel is disposed within the protective chamber on a side proximate the isolation door.

10. The wire cutting machine according to claim 2, wherein the protection chamber further comprises a side water baffle, a steering wheel waterproof assembly and a water baffle plate, the steering wheel waterproof assembly is arranged below the shielding edge, the side water baffle is arranged on one side opposite to the steering wheel waterproof assembly and is positioned below the isolation door, the water baffle plate is arranged at a position, which is close to the inner side, below the side water baffle plate, and the isolation door, the shielding edge, the steering wheel waterproof assembly, the water baffle plate and the side water baffle plate jointly enclose the protection chamber.

11. The wire cutting machine of claim 10, further comprising a drain and vent unit comprising a main vent line, a main drain line, an auxiliary vent line, and an auxiliary drain line;

the first end of the main exhaust pipeline is communicated with the cutting cavity, 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 cavity, 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.

12. The wire cutting machine of claim 11, 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.

13. The wire cutting machine of claim 12, wherein the auxiliary drain line is disposed below the auxiliary vent line.

14. The wire cutting machine of claim 13, wherein the diameter of the secondary exhaust line is greater than the diameter of the secondary drain line.

15. The wire cutting machine of claim 11, wherein the primary exhaust line is located higher than the secondary exhaust line; and/or the position of the main liquid discharge pipeline is lower than that of the auxiliary liquid discharge pipeline.

16. The wire cutting machine according to claim 12, wherein a water blocking disc is provided at a bottom of the protection chamber, the gas-liquid inlet is provided on the water blocking disc, and the gas-liquid inlet is provided at a lowest position of the protection chamber.

17. The wire cutting machine of any one of claims 1 to 16, wherein the wire cutting machine is a microtome.