Wire saw sawing machine

Abstract

The invention provides a fretsaw sawing machine, and relates to the technical field of wafer processing equipment, the fretsaw sawing machine comprises a machine body, a wire cooling assembly and a main shaft assembly, the wire cooling assembly and the main shaft assembly are arranged on the machine body, the wire cooling assembly is arranged on the machine body, the working end of the wire cooling assembly directly faces the working part of a winding assembly, and the wire cooling assembly sprays atomized liquid to the working part of the winding assembly. The linear cooling assembly can spray atomized liquid to the spindle assembly, an oil inlet channel extending towards the center axis of the spindle head is formed in the side wall of the spindle head connecting part, a first branch channel extending towards the center axis of the spindle head is formed in the side wall of the spindle head working part, and the oil inlet channel communicates with the first branch channel. The number of the angular contact bearings is five, and the five angular contact bearings are sequentially stacked back to back. The five angular contact bearings are sequentially stacked back to back, so that the working efficiency of the main shaft assembly is improved, and the temperature of the main shaft assembly is reduced through the oil inlet channel, the first branch channel and the linear cooling assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of wafer processing equipment, and in particular to a wire sawing machine. Background Art

[0002] The first step in wafer processing is slicing, so the quality of the finished wafer after slicing is crucial to subsequent processes. Due to the high brittleness and high hardness of the wafer itself, wire saws are often used for cutting.

[0003] Existing wire saws use a spindle and guide wheel to drive a diamond wire rope in a high-speed, circular motion along a pre-set winding path. A feed mechanism then moves the wafer to be cut toward the diamond wire rope, where it contacts and cuts the wafer. When cutting high-density and high-volume wafers, the spindle speed must be increased to 1500-3000 rpm. However, at such high speeds, the spindle temperature rises rapidly, affecting its rotational balance and leading to wire breakage, wafer cracking, and wafer fragmentation.

[0004] The existing utility model patent with patent number "CN201620135565.5" and patent name "A main axis cooling component of a multi-wire cutting machine" has disclosed that "the multi-wire cutting machine includes a main axis (1), a bearing seat (2), a front end cover (3) and a rear end cover (4), and the end face of the front end cover (3) and the end face of the bearing seat (2) are sealed, and the end face of the rear end cover (4) and the end face of the bearing seat (2) are sealed, and the main axis cooling component includes a liquid inlet hole (5) and a liquid outlet hole (6) located on the rear end cover (4), and the outlet end of the liquid inlet hole (5) and the inlet end of the liquid outlet hole (6) are sealed. A cooling channel is connected between the bearing seat (2), and the inlet end of the liquid inlet hole (5) and the outlet end of the liquid outlet hole (6) are respectively connected to a sand box (7) for storing slurry through a pipe. A mortar pump (8) is connected between the liquid inlet hole (5) and the sand box (7) through a pipe. However, in actual implementation, its cooling effect is not good because the cooling channel is opened on the inner wall of the bearing seat. The bearing in the main shaft transfers heat to the mortar flowing in the cooling channel by contacting the bearing seat. Since there is no direct contact between the bearing and the mortar, the heat transfer effect is low, and the main shaft will still vibrate after long-term operation. In addition, when cutting large wafers, the main shaft speed needs to reach more than 1500r / min. Driven by the main shaft, the cutting speed of the diamond wire increases and the temperature rises rapidly, which will cause the diamond wire to break, not only affecting the efficiency of cutting wafers, but also causing harm to workers. The most important thing is that when existing wire saws cut high-density and high-volume wafers, if the spindle speed is forcibly increased to avoid insufficient power, the spindle will lock due to motion overload after rotating for a period of time (about 8 to 12 minutes).

[0005] Therefore, it is necessary to develop or improve a wire sawing machine that can maintain high stability when cutting high-density and high-volume wafers. Summary of the Invention

[0006] Based on this, in order to solve the above-mentioned background problems, the present invention provides a wire sawing machine, and its specific technical solution is as follows: A wire sawing machine, comprising a bed, a spindle assembly, a bobbin and a winding assembly, wherein the spindle assembly is connected to the bobbin, and the bobbin is connected to the winding assembly line, the spindle assembly comprises a spindle head, a shaft cylinder, a sealing cover assembly and an angular contact bearing which are installed in sequence, and is characterized in that a wire cooling assembly and a spindle assembly are installed on the bed; The wire cooling assembly is mounted on the bed, with the working end of the wire cooling assembly facing the working part of the winding assembly. The wire cooling assembly sprays atomized liquid toward the working part of the winding assembly, and the wire cooling assembly can also spray atomized liquid toward the spindle assembly to reduce the temperature of the spindle assembly. The spindle head includes a connecting portion connected to the motor and a working portion connected to the winding drum, an oil inlet channel extending toward the central axis of the spindle head is opened on the side wall of the working portion of the spindle head, a first branch channel extending toward the central axis of the spindle head is opened on the side wall of the working portion of the spindle head, and the oil inlet channel is connected to the first branch channel; The angular contact bearings include five angular contact bearings, which are arranged back to back in sequence.

[0007] In some embodiments, the wire cooling assembly includes an air guide shell, an atomizer and air fins. The air guide shell is disc-shaped and hollow inside. A plurality of air outlet holes are provided on one end face of the air guide shell, and a mounting hole is provided at the center of the other end face of the air guide shell. An air guide port is provided on the side wall of the air guide shell, and the air guide port is facing the working end of the winding assembly.

[0008] In some embodiments, a folding plate extending toward the interior of the air guide shell is provided at the edge of the air guide port, and the folding plate and the inner side wall of the air guide shell form a water guide groove.

[0009] In some embodiments, a transport duct is further installed on the side wall of the air guide shell. The transport duct is located at the air guide port, and the transport duct is provided with an open groove adapted to the air guide port.

[0010] In some embodiments, the liquid storage tank is divided into a clean water area, a circulating water area, a clean oil area and a processing area. The line cooling assembly is respectively connected to the clean water area and the circulating water area, and the clean oil area and the processing area are respectively connected to the two ends of the spindle assembly.

[0011] In some embodiments, an oil distribution channel is opened at the center axis of the spindle head along the length direction of the spindle head, an annular cone is protruded from the side wall of the spindle head connecting part, and a circular guide groove is opened inward toward the working part side of the annular cone, and the guide groove is connected to the inlet end of the oil inlet channel.

[0012] In some embodiments, two groups of second branch channels are evenly spaced along the axial direction on the working part of the spindle head, and each group of second branch channels has three channels evenly spaced along the circumference of the side wall of the working part of the spindle head. The outlet end of the second branch channel and the outlet end of the first branch channel are respectively connected to the oil separation channel, and the outlet end of the oil inlet channel is respectively connected to the inlet end of the oil separation channel.

[0013] In some embodiments, the middle portions of both ends of the shaft cylinder are open and hollow, the spindle head is sleeved in the shaft cylinder, and the inner recesses of the two end surfaces of the shaft cylinder respectively form a first water storage tank and a second water storage tank, the bottom of the first water storage tank is provided with multiple water inlets, the bottom of the second water storage tank is provided with water outlets corresponding to the water inlets, a water cooling channel is provided inside the shaft cylinder, and the water inlet is connected to the water inlet through the water cooling channel; The sealing cover group includes a first sealing cover and a second sealing cover, which are respectively covered on both ends of the shaft cylinder. The first sealing cover is provided with a first through hole, and the second sealing cover is provided with a second through hole. The two ends of the spindle head extend from the first through hole and the second through hole respectively. The shaft cylinder, the spindle head, the first sealing cover and the second sealing cover form a closed working space. The first sealing cover is also provided with an oil inlet hole and a water inlet hole, and the second sealing cover is also provided with a water outlet hole and an oil outlet hole. The water outlet hole is connected to the water inlet hole through the second water storage tank, and the oil outlet hole is connected to the oil inlet hole through the working space.

[0014] In some embodiments, the isolation ring is arranged in a double ring shape, the outer ring of the isolation ring abuts against the inner wall of the shaft cylinder, and an oil channel is formed between the outer ring of the isolation ring and the inner ring of the isolation ring. The oil channel corresponds to the ball position of the angular contact bearing, so that the cooling oil can flow into the angular contact bearing through the oil channel. The diameter of the inner ring of the isolation ring is larger than the diameter of the inner ring of the angular contact bearing. A gap connecting the angular contact bearing is avoided at the inlet end of the first branch channel, and an isolation ring is placed between every two angular contact bearings.

[0015] In some embodiments, the wire saw machine further includes a detection device, and the detection device includes an infrared sensor.

[0016] This solution offers the following benefits: When the line cooling assembly sprays atomized liquid toward the wafer being cut by the wire saw, some of the atomized liquid directly contacts the wafer and wire saw, liquefying. As the wire saw cuts the wafer, the liquefied atomized liquid and the atomized liquid simultaneously cool the wire saw, preventing it from breaking due to high temperatures. Therefore, when cutting high-rigidity, high-density wafers, atomized liquid offers superior cooling compared to existing direct water spraying. Furthermore, when the line cooling assembly is operating continuously, dust generated by cutting combines with the atomized liquid, causing it to drip, reducing the amount of dust in the working environment.

[0017] Because the five angular contact bearings are stacked back-to-back to increase the spindle assembly's operating efficiency, conventional cooling methods cannot quickly cool the spindle head and angular contact bearings. Therefore, cooling oil flows through the oil inlet channel and the first branch channel within the spindle head. This oil directly contacts the spindle head and the five angular contact bearings, effectively cooling them and preventing spindle lock or damage due to overheating. While cooling, the cooling oil also lubricates the angular contact bearings, extending the life of the spindle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but rather the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0019] Figure 1This is a structural schematic diagram of a wire sawing machine according to an embodiment of the present invention; Figure 2 yes Figure 1 A magnified view of the structure at point A; Figure 3 is a structural schematic diagram of a wire cooling assembly according to an embodiment of the present invention; Figure 4 is another structural schematic diagram of a wire cooling assembly according to an embodiment of the present invention; Figure 5 yes Figure 4 A magnified view of the structure at D in the middle; Figure 6 is a structural schematic diagram of a spindle assembly according to an embodiment of the present invention; Figure 7 yes Figure 4 Sectional view at the middle BB; Figure 8 is another structural schematic diagram of the spindle assembly according to one embodiment of the present invention; Figure 9 yes Figure 8 A magnified view of the structure at C in the middle; Figure 10 is another structural schematic diagram of the spindle assembly according to one embodiment of the present invention; Figure 11 1 is a schematic structural diagram of a shaft cylinder according to an embodiment of the present invention; Figure 12 It is a schematic structural diagram of the two ends of the shaft cylinder according to one embodiment of the present invention; Figure 13 It is a structural schematic diagram of an isolation ring according to an embodiment of the present invention.

[0020] Description of reference numerals: Line cooling assembly 1; air guide housing 11; water accumulation area 11a; air outlet 111; mounting hole 112; air guide port 113; folding plate 114; water guide groove 115; transport pipe 116; opening groove 117; atomizer 12; fan 13; spindle assembly 2; spindle head 21; spindle head connecting portion 21a; spindle head working portion 21b; oil inlet channel 211; first branch channel 212; oil channel 212a; gap 212b; oil distribution channel 213; annular frustum 214; guide groove 215; second branch Channel 216; shaft cylinder 22; first water storage tank 221; water inlet 2211; second water storage tank 222; water outlet 2221; water-cooling channel 223; sealing cover assembly 23; first sealing cover 231; first through hole 2311; oil inlet hole 2312; water inlet hole 2313; second sealing cover 232; second through hole 2321; water outlet hole 2322; oil outlet hole 2323; working space 233; isolation ring 24; angular contact bearing 25; detection device 3; bed 100; winding reel 400; winding assembly 300. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0025] Example:

[0026] like Figure 1As shown, a wire sawing machine includes a bed 100, a spindle assembly 2, a wire cooling assembly 1, a liquid storage tank and a detection device 3. The wire cooling assembly 1, the spindle assembly 2 and the detection device 3 are installed on the bed 100.

[0027] There are two groups of wire cooling components 1 , which are respectively installed on both sides of the bed 100 and correspond to each other.

[0028] like Figures 2 to 5 11 and 12. As shown in FIG, the wire cooling assembly 1 includes an air guide shell 11, an atomizer 12 and air fins 13. The air guide shell 11 is disc-shaped and hollow inside. A plurality of air outlet holes 111 are provided on one side of the air guide shell 11, and a mounting hole 112 is provided at the center of the other side of the air guide shell 11. An air guide port 113 is provided on the side wall of the air guide shell 11. A folding plate 114 extending toward the inside of the air guide shell 11 is provided on the edge of the air guide port 113. The folding plate 114 and the side wall of the air guide shell 11 form a water guide groove 115. The air guide port 113 is opposite to the working end of the winding assembly 300 (i.e., the end for cutting wafers). The water guide groove 115 guides the mist on the inner wall of the air guide shell 11 to the bottom of the air guide shell 11. A water accumulation part 11a is formed at the bottom of the air guide shell 11 for storing the accumulated water. A transport pipe 116 is also installed on the side wall of the air guide shell 11. The transport pipe 116 is located at the air guide port 113. See the attached drawings. Figures 3-5 The transport pipe 116 is provided with an opening slot 117 adapted to the air guide port 113. The opening slot 117 is arranged on an edge side of the air guide port 113, and the edge side is close to the water accumulation part 11a of the air guide housing ( Figure 3 At the position indicated by the dotted line in the figure, the air guide housing 11 can rotate slightly in a circular motion along its central axis, causing the water deposited inside the air guide housing 11 to overflow from the edge and flow into the receiving opening 117. The output end of the transport pipe 116 is connected to the liquid storage tank, and the water finally flows into the liquid storage tank through the transport pipe 116. This effectively prevents the mist inside the air guide housing 11 from adhering to the inner wall of the air guide housing 11, coalescing into water droplets, and then dripping out of the air guide housing 11 through the air guide port 113.

[0029] like Figure 3 As shown, the wind wing 13 is arranged in the air guide shell 11, and the driving end is connected to the driving motor through the mounting hole 112. When the driving motor drives the wind wing 13 to rotate forward, the wind direction of the wind wing 13 is toward the air outlet 111; a plurality of atomizers 12 are installed on one side of the air guide shell 11 where the mounting hole 112 is opened, and the atomizer 12 sprays toward the inside of the air guide shell 11, and the atomizer 12 is connected to the liquid storage tank.

[0030] like Figures 1 to 5As shown, the working principle of the wire cooling assembly 1 is that the driving motor drives the wind fin 13 to rotate forward, and the atomizer 12 sprays atomized liquid toward the wind fin 13. The atomized liquid is blown by the wind fin 13 to the side of the air guide shell 11 where the air outlet 111 is provided. The atomized liquid blown out from the air outlet 111 will combine with the dust in the air and fall down, effectively reducing the stone dust problem stirred up when cutting wafers, better protecting the health of the workers, and the falling atomized liquid further reduces the temperature of the space next to the wire saw, so as to achieve the effect of cooling the wire saw. Secondly, when the wind blade 13 rotates forward, the wind direction is toward the air outlet 111, and the wind blocked by the air guide shell 11 will be blown out from the air guide port 113. Therefore, the air guide port 113 will guide the atomized liquid to blow toward the position where the wire saw cuts the wafer, thereby better cooling the wire saw. Compared with conventional water cooling, the atomized liquid will evaporate quickly when it contacts the high-temperature wire saw, thereby taking away the heat from the wire saw, and the continuous operation of the wind blade 13 and the atomizer 12 will moisten the wire saw to further reduce the temperature of the wire saw.

[0031] The liquid storage tank is divided into a clean water area, a circulating water area, an oil clean area and a treatment area. The atomizer 12 is connected to the clean water area, and the transport pipe 116 is connected to the circulating water area. The oil clean area and the treatment area are connected to both ends of the main shaft assembly 2 respectively.

[0032] like Figure 1 、 Figure 6 and Figure 7 As shown, the spindle assembly 2 includes a spindle head 21, a shaft cylinder 22, a sealing cover group 23, an isolation ring 24 and five angular contact bearings 25. The spindle head 21 includes a connecting portion connected to the motor and a working portion connected to the winding reel 400. Three oil inlet channels 211 extending toward the central axis of the spindle head 21 are provided on the side wall of the connecting portion of the spindle head 21. The oil inlet channels 211 are inclined toward the connecting portion of the spindle head 21. Three first branch channels 212 extending toward the central axis of the spindle head 21 are provided on the side wall of the working portion of the spindle head 21. The first branch channels 212 are inclined toward the working portion of the spindle head 21. An oil distribution channel 213 is provided at the central axis of the spindle head 21 along the length direction of the spindle head 21. The outlet ends of the three circumferentially arranged oil inlet channels 211 are respectively connected to the inlet ends of the oil distribution channels 213, and the outlet ends of the three first branch channels 212 are connected to the oil distribution channels 213. An annular truncated cone 214 is protruded from the side wall of the connecting portion of the spindle head 21 . A circular guide groove 215 is formed inwardly on the side of the annular truncated cone 214 facing the working portion. The guide groove 215 is communicated with the oil inlet channel 211 .

[0033] like Figure 11 and Figure 12As shown, the shaft barrel 22 is open at both ends and hollow in the middle, with the spindle head 21 sleeved within the shaft barrel 22. The shaft barrel 22 has recesses at both ends forming a first water reservoir 221 and a second water reservoir 222, respectively. The first water reservoir 221 has at least eight water inlets 2211 defined at its bottom, while the second water reservoir 222 has a water outlet 2221 corresponding to the water inlets 2211 defined at its bottom. A water cooling channel 223 is defined within the shaft barrel 22, connecting the water inlets 2211 to the water inlets 2211 through the water cooling channel 223.

[0034] like Figure 6 As shown, the sealing cover group 23 includes a first sealing cover 231 and a second sealing cover 232. The first sealing cover 231 and the second sealing cover 232 are respectively covered on both ends of the shaft cylinder 22. The first sealing cover 231 and the second sealing cover 232 are respectively provided with a first through hole 2311 and a second through hole 2321 adapted to the working part and the connecting part of the spindle head 21. The two ends of the spindle head 21 extend from the first through hole 2311 and the second through hole 2321 respectively. The shaft cylinder 22, the spindle head 21, the first sealing cover 231 and the second sealing cover 232 form a closed working space 233. The first sealing cover 231 also has an oil inlet 2312 and a water inlet 2313. The second sealing cover 232 also has a water outlet 2322 and an oil outlet 2323. The water outlet 2322 communicates with the water inlet 2313 through the second water storage tank 222, while the oil outlet 2323 communicates with the oil inlet 2312 through the workspace 233. The water inlet 2313 communicates with the water purification area, the oil inlet 2312 communicates with the oil purification area, the water outlet 2322 communicates with the circulating water area, and the oil outlet 2323 communicates with the treatment area. Water pumps are installed in the water purification and circulating water areas, while oil pumps are installed in the oil purification and treatment areas.

[0035] The first and second sealing covers 231 and 232 are equipped with two sealing rings (not shown) that respectively fit into the first and second water reservoirs 221 and 222. The first water reservoir 221 and one sealing ring seal one end of the shaft cylinder 22, while the second water reservoir 222 and the other sealing ring seal the other end of the shaft cylinder 22. This creates a water seal around the workspace 233, isolating the cooling oil from the cooling water. Furthermore, the first and second water reservoirs 221 and 222 can store water, ensuring that the cooling water can better absorb the heat transferred from the angular contact bearing 25.

[0036] like Figure 10 As shown, the angular contact bearing 25 is arranged in the working space 233, the outer ring of the angular contact bearing 25 abuts against the inner wall of the sleeve, the inner ring of the angular contact bearing 25 abuts against the side wall of the spindle head 21, and five angular contact bearings 25 are stacked back to back.

[0037] like Figures 8-12As shown, the isolating ring 24 is arranged in a double annular configuration. The outer ring of the isolating ring 24 abuts the inner wall of the shaft barrel 22. An oil passage 212a is formed between the outer and inner rings of the isolating ring 24. The oil passage 212a corresponds to the ball portion of the angular contact bearing 25, allowing cooling oil to flow into the angular contact bearing 25 through the oil passage 212a. The inner ring diameter of the isolating ring 24 is larger than the inner ring diameter of the angular contact bearing 25, and the isolating ring 24 directly faces the inlet end of the first branch channel 212. An isolating ring 24 is installed between every two adjacent angular contact bearings 25. Because the inner diameter of the isolating ring 24 is larger than that of the angular contact bearing 25, a gap 212b is formed at the inlet end of the first branch channel 212 to connect with the angular contact bearing 25. Therefore, cooling oil flows from the first branch channel 212 into the angular contact bearing 25, providing cooling and lubrication.

[0038] like Figure 7 As shown, cooling oil is continuously injected into the working space 233 until the cooling oil partially submerges the isolation ring 24 and the angular contact bearing 25. When the cooling oil partially submerges the annular cone 214 and the guide groove 215, the spindle head 21 begins rotating at 200 rpm, applying a film of cooling oil to all positions of the angular contact bearing 25. When the cooling oil completely submerges the working space 233, the spindle head 21 stops rotating. The wire is wound onto the bobbin 400, thus preparing for winding. When the spindle head 21 rotates at a speed of 1500 r / min to 3000 r / min and begins cutting wafers, the cooling oil is thrown out from the gap 212b at the entrance end of the first branch channel 212 by the centrifugal force of the spindle head 21 to prevent the oil passages between the multiple stacked angular contact bearings 25 from being blocked. When the cooling oil in the oil distribution channel 213 and the first branch channel 212 is discharged, the oil inlet channel 211 draws the cooling oil in under the action of negative pressure and then throws the cooling oil out from the first branch channel 212. Among them, the oil inlet hole 2312 and the oil outlet hole 2323 always keep working to fill and drain the oil. In this way, even five stacked angular contact bearings 25 can be cooled one by one, and because the cooling oil is in direct contact with the angular contact bearings 25 and the spindle head 21, the cooling effect is better.

[0039] Because the five angular contact bearings 25 are arranged back-to-back in the working portion of the spindle head 21, they disperse the load generated during wafer dicing. Each angular contact bearing 25 bears less force, thus preventing deformation or damage to a single angular contact bearing 25 due to overload. As a result, the spindle assembly 2 can maintain normal operation at speeds of 1500 to 3000 rpm.

[0040] like Figure 1 As shown, the detection device 3 mainly includes an infrared sensor for detecting the temperature of the wire saw, thereby cooperating with the wire air cooling component 1 to cool the wire saw.

[0041] In the second embodiment, two groups of second branch channels 216 are evenly spaced in sequence along the axial direction on the side wall of the working part of the spindle head 21, and each group of second branch channels has three channels evenly spaced along the circumferential direction of the side wall of the working part of the spindle head 21. Furthermore, the oil inlet channel 211, the first branch channel 212 and the second branch channel are evenly spaced in the spindle head 21 along the circumferential direction of the center axis of the spindle head 21, ensuring that the center of gravity of the spindle head 21 is located at the center axis when the spindle head 21 rotates, thereby avoiding shaking of the spindle head 21.

[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A wire sawing machine, comprising a bed (100), a spindle assembly (2), a bobbin (400) and a winding assembly (300), wherein the spindle assembly (2) is connected to the bobbin (400), and the bobbin (400) is connected to the winding assembly (300) by wire, wherein the spindle assembly (2) comprises a spindle head (21), a shaft cylinder (22), a sealing cover assembly (23) and an angular contact bearing (25) which are sequentially installed, and wherein: A wire cooling assembly (1) and a spindle assembly (2) are mounted on the bed (100); The wire cooling assembly (1) is mounted on the bed (100), and the working end of the wire cooling assembly (1) faces the working part of the winding assembly (300). The wire cooling assembly (1) sprays atomized liquid toward the working part of the winding assembly (300), and the wire cooling assembly (1) can also spray atomized liquid toward the spindle assembly (2) to reduce the temperature of the peripheral side of the spindle assembly (2); The spindle head (21) comprises a connecting portion (21a) connected to the motor and a working portion (21b) connected to the winding drum (400); an oil inlet channel (211) extending toward the center axis of the spindle head (21) is provided on a side wall of the working portion (21b) of the spindle head (21); a first branch channel (212) extending toward the center axis of the spindle head (21) is provided on a side wall of the working portion (21b) of the spindle head (21); and the oil inlet channel (211) is connected to the first branch channel (212); The angular contact bearings (25) include five angular contact bearings (25), which are arranged back to back in sequence.

2. A wire sawing machine according to claim 1, characterized in that: The wire cooling assembly (1) comprises an air guide shell (11), an atomizer (12) and a wind wing (13). The air guide shell (11) is disc-shaped and hollow inside. A plurality of air outlet holes (111) are provided on one end surface of the air guide shell (11). A mounting hole (112) is provided at the center of the other end surface of the air guide shell (11). An air guide port (113) is provided on the side wall of the air guide shell (11). The air guide port (113) faces the working end of the winding assembly (300).

3. The wire sawing machine according to claim 2, characterized in that: A folding plate (114) extending toward the interior of the air guide shell (11) is provided at the edge of the air guide port (113); the folding plate (114) and the inner side wall of the air guide shell (11) form a water guide groove (115).

4. The wire sawing machine according to claim 3, characterized in that: A transport duct (116) is also installed on the side wall of the air guide shell (11). The transport duct (116) is located at the air guide port (113). The transport duct (116) is provided with an opening slot (117) adapted to the air guide port (113).

5. The wire sawing machine according to claim 1, characterized in that: The liquid storage tank is divided into a clean water area, a circulating water area, a clean oil area and a treatment area. The line cooling component (1) is connected to the clean water area and the circulating water area respectively, and the clean oil area and the treatment area are connected to both ends of the main shaft component (2) respectively.

6. The wire sawing machine according to claim 1, characterized in that: An oil distribution channel (213) is provided at the center axis of the spindle head (21) along the length direction of the spindle head (21), an annular truncated cone (214) is protruded from the side wall of the connecting portion of the spindle head 21, and an annular guide groove (215) is provided inwardly on the side of the annular truncated cone (214) facing the working portion, and the guide groove (215) is communicated with the inlet end of the oil inlet channel (211).

7. The wire sawing machine according to claim 6, characterized in that: The working portion of the spindle head (21) is also provided with two groups of second branch channels (216) evenly spaced in the axial direction. Each group of second branch channels has three channels evenly spaced in the circumferential direction of the side wall of the working portion of the spindle head (21). The outlet ends of the second branch channels (216) and the outlet ends of the first branch channels (212) are respectively connected to the oil distribution channel (213), and the outlet ends of the oil inlet channels (211) are respectively connected to the inlet ends of the oil distribution channel (213).

8. The wire sawing machine according to claim 7, characterized in that: The middle portions of both ends of the shaft cylinder (22) are open and hollow, and the main shaft head (21) is sleeved in the shaft cylinder (22). The inner recesses of both end surfaces of the shaft cylinder (22) respectively form a first water storage tank (221) and a second water storage tank (222). The bottom of the first water storage tank (221) is provided with a plurality of water inlets (2211), and the bottom of the second water storage tank (222) is provided with a water outlet (2221) corresponding to the water inlet (2211). A water cooling channel (223) is provided inside the shaft cylinder (22), and the water inlet (2211) is communicated with the water inlet (2211) through the water cooling channel (223). The sealing cover group (23) includes a first sealing cover (231) and a second sealing cover (232). The first sealing cover (231) and the second sealing cover (232) are respectively covered at both ends of the shaft cylinder (22). The first sealing cover (231) is provided with a first through hole (2311), and the second sealing cover (232) is provided with a second through hole (2321). The two ends of the main shaft head (21) extend from the first through hole (2311) and the second through hole (2321). The shaft cylinder (22), the main shaft head (21), the first sealing cover (231) and the second sealing cover (232) are respectively covered at both ends of the shaft cylinder (22). A sealing cover (231) and a second sealing cover (232) form a sealed working space (233). The first sealing cover (231) is further provided with an oil inlet hole (2312) and a water inlet hole (2313). The second sealing cover (232) is further provided with a water outlet hole (2322) and an oil outlet hole (2323). The water outlet hole (2322) is communicated with the water inlet hole (2313) through the second water storage tank (222), and the oil outlet hole (2323) is communicated with the oil inlet hole (2312) through the working space (233).

9. The wire sawing machine according to claim 8, characterized in that: The isolation ring (24) is arranged in a double ring shape, the outer ring of the isolation ring (24) abuts against the inner wall of the shaft cylinder (22), and an oil passage (212a) is formed between the outer ring of the isolation ring (24) and the inner ring of the isolation ring (24). The oil passage (212a) corresponds to the ball portion of the angular contact bearing (25), so that cooling oil can flow into the angular contact bearing (25) through the oil passage (212a). The diameter of the inner ring of the isolation ring (24) is larger than the diameter of the inner ring of the angular contact bearing (25). A gap (212b) connecting to the angular contact bearing (25) is avoided at the inlet end of the first branch channel (212), and an isolation ring (24) is arranged between every two angular contact bearings.

10. The wire sawing machine according to claim 1, characterized in that: It also includes a detection device (3), which includes an infrared sensor.

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