Die steel sawing machine capable of adjusting cutting angle

Abstract

The invention relates to the technical field of sawing machines, in particular to a die steel sawing machine with an adjustable cutting angle, which comprises a machine body, a sawing unit, polishing units and a lifting unit, the sawing unit is fixedly arranged at the top of the machine body, the polishing units are distributed at the top of the machine body left and right, and the lifting unit is fixedly arranged at the top of the machine body. An output shaft of a servo motor drives a driving synchronous wheel to rotate, four idle wheels are further driven to rotate around four positioning shafts under connection of a synchronous belt, and the synchronous belt rotates to further drive a left linear sliding block and a right linear sliding block to reversely slide along two linear guide rails. The saw blade is clamped between the front guide roller and the rear guide roller, so that the guide rollers move to drive the saw blade to deform, an included angle is formed between the middle part of the saw blade and the die steel, and the die steel is cut at different angles.

Description

Technical Field

[0001] The invention relates to the technical field of sawing machines, in particular to a sawing machine for mold steel with adjustable cutting angles. Background Art

[0002] Mold steel is a type of steel used to manufacture molds such as cold stamping dies, hot forging dies, and die casting dies. Mold materials are the material and technical basis of the mold manufacturing industry, among which mold steel is a traditional mold material. Its variety, specification, and quality play a decisive role in the performance, service life, and manufacturing cycle of the mold. In recent years, the output, production technology, process equipment, quality, and variety of mold steel at home and abroad have achieved relatively rapid development. In the production process of mold steel, it is also necessary to use a sawing machine to cut the steel;

[0003] Referring to a Chinese patent with application number 201911176219.6, a CNC sawing machine for forging steel is disclosed, which can effectively reduce the iron filings on the workbench, and the iron filings eventually slide into the receiving box below, thereby effectively reducing the pollution to the working environment. However, there are still some shortcomings in the use of the above-mentioned CNC sawing machine. For example, the CNC sawing machine lacks measures for adjusting the sawing angle, and the sawing range is small. At the same time, with the continuous use of the CNC sawing machine, the saw blade is easy to be blunted, thereby affecting the subsequent sawing efficiency. For this reason, we propose a sawing machine for mold steel with adjustable cutting angle to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: a sawing machine for mold steel with adjustable cutting angle, comprising:

[0005] Bed;

[0006] The sawing unit is fixed on the top of the bed and is used for cutting mold steel;

[0007] Grinding units are arranged on the top of the bed in left and right distributions and are used for grinding the sawing units;

[0008] The lifting unit is fixed on the top of the bed and is used to lift the mold steel.

[0009] As a preferred solution of the present invention, the sawing unit comprises:

[0010] The track is fixedly arranged at the upper end of the bed;

[0011] A saw bow, slidably mounted inside the track;

[0012] The saw blade is fixedly mounted on the bottom of the saw bow;

[0013] A push-pull block is fixedly installed on the top of the saw bow;

[0014] A path groove is provided through the front side of the push-pull block;

[0015] AC motor, located on the back of the push-pull block;

[0016] A turntable, fixedly mounted on the end of the output shaft of the AC motor;

[0017] A push pin is fixedly mounted on the front of the turntable and away from the center of the turntable, and the push pin is slidably mounted inside the path groove;

[0018] Metal frames, which are fixedly installed on the front and rear ends of the top of the bed;

[0019] The top plate is fixedly mounted on the tops of the four AC motors, the AC motors are fixedly mounted on the top of the top plate, and the track is fixedly mounted on the bottom of the top plate.

[0020] As a preferred solution of the present invention, the sawing unit further includes:

[0021] The suspension rod is fixedly installed at the four corners of the bottom of the top plate;

[0022] The support plate is fixedly installed at the bottom of the four suspension rods;

[0023] The positioning shaft is fixedly installed at the four corners of the bottom of the support plate;

[0024] An idler wheel is rotatably mounted on the lower part of the outer wall of the four positioning shafts;

[0025] The servo motor is fixedly mounted on the top rear end of the pallet;

[0026] The active synchronous wheel is fixedly mounted on the output shaft of the servo motor;

[0027] The synchronous belt is connected together with four idler wheels and the periphery of the servo motor.

[0028] As a preferred solution of the present invention, the sawing unit further comprises:

[0029] The linear guide rails are fixedly mounted on the bottom left end and the bottom right end of the support plate;

[0030] A linear slider is slidably mounted on the periphery of the linear guide rail;

[0031] The slide table is fixedly mounted on the bottom of the linear slide block;

[0032] The vertical axis is fixedly mounted at the bottom front end and the bottom rear end of the slide;

[0033] The guide roller is rotatably mounted on the lower part of the outer wall of the vertical shaft, and the front and back sides of the saw blade are respectively in contact with the outer walls of the front and rear guide rollers.

[0034] As a preferred solution of the present invention, the sawing unit further includes:

[0035] The placement grooves are provided at both ends of the saw bow, and the saw blade is pressed tightly inside the left and right placement grooves by bolts;

[0036] A convex ring is fixedly mounted on the upper portion of the outer wall of the guide roller;

[0037] The groove is symmetrically arranged on the front upper part and the back upper part of the saw blade with the central axis of the saw blade, and the convex ring is clamped in the groove.

[0038] As a preferred solution of the present invention, the sawing unit further includes:

[0039] An air hole is provided in the middle of the outer wall of the guide roller;

[0040] An air passage is provided at the lower part of the outer wall of the guide roller, penetrates the interior of the guide roller, and extends to communicate with the interior of the air bag, wherein the height of the air passage is adapted to the height of the bottom teeth of the saw blade;

[0041] The air bag is fixedly mounted at the opening of the air hole and protrudes by the height of the outer wall of the guide roller.

[0042] As a preferred solution of the present invention, the grinding unit comprises:

[0043] The horizontal axis is rotatably mounted between the front and rear metal frames;

[0044] The rotating wheel is fixedly mounted on the middle of the outer wall of the horizontal shaft and is located at the bottom of the saw blade;

[0045] The grinding teeth are fixedly mounted on the outer wall of the rotating wheel, and the tooth tips are engaged with the saw teeth at the bottom of the saw blade;

[0046] The torsion spring is sleeved on the periphery of the transverse axis and fixedly installed between the torsion spring and the metal frame.

[0047] As a preferred solution of the present invention, the lifting unit comprises:

[0048] A fixed table, fixedly installed at the bottom of the bed;

[0049] A servo cylinder is fixedly mounted on the bottom of the fixed platform, and an output rod of the servo cylinder movably penetrates the interior of the fixed platform and extends to the periphery of the top thereof;

[0050] The lifting plate is fixedly mounted on the top of the output rod of the servo cylinder. A through slot slightly larger than the specification of the lifting plate is opened on the top of the bed, and the lifting plate movably passes through the through slot.

[0051] As a preferred solution of the present invention, a clamping platform for clamping in left and right directions is provided on the top of the lifting plate.

[0052] As a preferred solution of the present invention, a clearance groove is formed through the top of the top plate, and the push-pull block is located inside the clearance groove.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] 1. In the present invention, the active synchronous wheel is driven to rotate by the output shaft of the servo motor, and further driven to rotate four idle wheels around four positioning shafts under the connection of the synchronous belt. The rotation of the synchronous belt further drives the left and right linear sliders to slide along the two linear guide rails in opposite directions, thereby driving the two vertical shafts and guide rollers at the bottom thereof to move together. Since the saw blade is clamped between the front and rear guide rollers, the movement of the guide roller drives the saw blade to deform, resulting in an angle between the middle part of the saw blade and the mold steel, thereby cutting the mold steel at different angles.

[0055] 2. In the present invention, the saw blade is swung back and forth between the front and rear guide rollers, which drives the guide roller to rotate along the outer wall of the vertical axis. The rotation of the guide roller further drives the airbag to rotate. Since the airbag protrudes from the outer wall of the convex ring, when the airbag contacts the surface of the saw blade as the convex ring rotates, the airbag will be compressed, thereby blowing the air inside the air hole out through the air duct. On the one hand, the saw blade can be cooled, and on the other hand, the metal chips attached to the saw teeth of the saw blade can be blown away to ensure the smoothness of the sawing.

[0056] 3. In the present invention, when the saw blade moves to the left, the saw teeth at the bottom drive the grinding teeth engaged therewith to rotate counterclockwise, and the rotation of the grinding teeth further drives the rotating wheel and the horizontal axis to rotate together, causing elastic deformation of the torsion spring. When the saw blade moves to the right, the rebound force of the torsion spring drives the horizontal axis, the rotating wheel and the grinding teeth to rotate clockwise, causing the end of the grinding teeth to rub against the saw teeth at the bottom of the saw blade, thereby grinding the saw teeth of the saw blade, making the saw teeth of the saw blade sharper and ensuring sawing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a structural schematic diagram of the present invention;

[0058] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure;

[0059] Figure 3 For the present invention Figure 2 Another perspective structural diagram of;

[0060] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0061] Figure 5It is a structural schematic diagram of the sawing unit in the present invention;

[0062] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part B;

[0063] Figure 7 It is a schematic diagram of the local detailed structure of the sawing unit in the present invention;

[0064] Figure 8 It is a schematic cross-sectional structural diagram of the guide roller in the present invention;

[0065] Fig. 9 For the present invention Figure 5 Schematic diagram of the enlarged structure of part C.

[0066] In the figure: 100, bed; 200, sawing unit; 201, track; 202, saw bow; 2002, placement slot; 203, saw blade; 204, push block; 205, path slot; 206, AC motor; 207, turntable; 208, push pin; 209, metal frame; 2010, top plate; 2011, suspension rod; 2012, support plate; 2013, positioning shaft; 2014, idler wheel; 2015, servo motor; 2016, active synchronous wheel; 2017, synchronous belt ; 2018, linear guide; 2019, linear slider; 2020, slide; 2021, vertical axis; 2022, guide roller; 2023, convex ring; 2024, air hole; 2025, airway; 2026, air bag; 2027, groove; 2028, give way groove; 300, grinding unit; 301, horizontal axis; 302, rotating wheel; 303, grinding teeth; 304, torsion spring; 400, lifting unit; 401, fixed table; 402, servo cylinder; 403, lifting plate. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] See also Figures 1 to 9 The technical solution provided by the present invention specifically includes the following embodiments:

[0069] A sawing machine for mold steel with adjustable cutting angle comprises a bed 100, a sawing unit 200, a grinding unit 300 and a lifting unit 400. The sawing unit 200 is fixedly arranged on the top of the bed 100 for cutting the mold steel. The grinding units 300 are arranged on the top of the bed 100 in a left-right distribution for grinding the sawing unit 200. The lifting unit 400 is fixedly arranged on the top of the bed 100 for lifting the mold steel.

[0070] For further details, please refer to Figure 2 to Figure 5 As shown:

[0071] The sawing unit 200 includes a track 201, a saw bow 202, a saw blade 203, a push block 204, a path slot 205, an AC motor 206, a turntable 207, a push pin 208, a metal frame 209 and a top plate 2010. The track 201 is fixedly arranged at the upper end of the bed 100, the saw bow 202 is slidably installed inside the track 201, the saw blade 203 is fixedly installed at the bottom of the saw bow 202, the push block 204 is fixedly installed at the top of the saw bow 202, the path slot 205 is opened through the front of the push block 204, and the AC motor 206 is located at the bottom of the saw bow 202. On the back side of the push-pull block 204, the turntable 207 is fixedly mounted on the output shaft end of the AC motor 206, the push-pull pin 208 is fixedly mounted on the front side of the turntable 207 and away from its center position, the push-pull pin 208 is slidably mounted inside the path groove 205, the metal frame 209 is fixedly mounted on the top front end and the top rear end of the bed 100 on the left and right sides, the top plate 2010 is fixedly mounted on the top of the four AC motors 206, the AC motor 206 is fixedly mounted on the top of the top plate 2010, and the track 201 is fixedly mounted on the bottom of the top plate 2010.

[0072] Specifically, the output shaft of the AC motor 206 drives the turntable 207 and the push-pull pin 208 to rotate. The rotation of the push-pull pin 208 further drives the push-pull block 204 to reciprocate left and right under the sliding cooperation with the path groove 205. The reciprocating movement of the turntable 207 further drives the saw bow 202 to reciprocate left and right along the inside of the track 201, driving the saw blade 203 to move. At the same time, the output rod of the servo cylinder 402 slowly lifts the lifting plate 403 upward, slowly lifts the mold steel upward, and cooperates with the saw blade 203 that reciprocates left and right to achieve cutting of the mold steel.

[0073] For further details, please refer to Figure 5 , Figure 6 , Figure 7 As shown:

[0074] The sawing unit 200 also includes a suspension rod 2011, a support plate 2012, a positioning shaft 2013, an idler wheel 2014, a servo motor 2015, an active synchronous wheel 2016, a synchronous belt 2017, a linear guide rail 2018, a linear slider 2019, a slide 2020, a vertical shaft 2021 and a guide roller 2022. The suspension rod 2011 is fixedly mounted at the bottom four corners of the top plate 2010, the support plate 2012 is fixedly mounted at the bottom of the four suspension rods 2011, the positioning shaft 2013 is fixedly mounted at the bottom four corners of the support plate 2012, the idler wheel 2014 is rotatably mounted on the lower part of the outer wall of the four positioning shafts 2013, and the servo motor 2015 is fixedly mounted on the top of the support plate 2012. The driving synchronous wheel 2016 is fixedly mounted on the output shaft of the servo motor 2015, the synchronous belt 2017 is jointly sleeved on the four idler wheels 2014 and the periphery of the servo motor 2015, the linear guide rail 2018 is fixedly mounted on the bottom left end and the bottom right end of the pallet 2012, the linear slider 2019 is slidably mounted on the periphery of the linear guide rail 2018, the slide 2020 is fixedly mounted on the bottom of the linear slider 2019, the vertical shaft 2021 is fixedly mounted on the bottom front end and the bottom rear end of the slide 2020, the guide roller 2022 is rotatably mounted on the lower part of the outer wall of the vertical shaft 2021, and the front and back sides of the saw blade 203 are in contact with the outer walls of the front and rear guide rollers 2022 respectively.

[0075] Specifically, the active synchronous wheel 2016 is driven to rotate by the output shaft of the servo motor 2015, and further driven to rotate the four idler wheels 2014 around the four positioning shafts 2013 under the connection of the synchronous belt 2017. The rotation of the synchronous belt 2017 further drives the left and right linear sliders 2019 to slide in the opposite direction along the two linear guide rails 2018, thereby driving the two vertical shafts 2021 and the guide rollers 2022 located at the bottom thereof to move together. Since the saw blade 203 is clamped between the front and rear guide rollers 2022, the movement of the guide rollers 2022 drives the saw blade 203 to deform, resulting in an angle between the middle part of the saw blade 203 and the mold steel, thereby cutting the mold steel at different angles.

[0076] For further details, please refer to Figure 6 , Figure 8 As shown:

[0077] The sawing unit 200 also includes a seating groove 2002, a convex ring 2023 and a groove 2027. The seating grooves 2002 are opened at both ends of the saw bow 202. The saw blade 203 is pressed inside the left and right seating grooves 2002 by bolts. The convex ring 2023 is fixedly installed on the upper part of the outer wall of the guide roller 2022. The groove 2027 is opened symmetrically on the front upper part and the back upper part of the saw blade 203 with the central axis of the saw blade 203 in the front and back upper parts, and the convex ring 2023 is clamped in the inside of the groove 2027.

[0078] Specifically, by setting the clamping effect of the convex ring 2023 and the groove 2027, the saw blade 203 can be limited between the front and rear convex rings 2023 to prevent the saw blade 203 from being dislocated and detached from the front and rear convex rings 2023. At the same time, when the cutting angle of the saw blade 203 needs to be adjusted, the bolts at both ends of the saw bow 202 used to clamp the saw blade 203 are loosened, and the saw blade 203 can be moved left and right along the inside of the receiving groove 2002 to ensure that the saw blade 203 body will not be pulled during the adjustment of the guide roller 2022 in the left and right directions. After the sawing angle of the saw blade 203 is adjusted, the two ends of the saw blade 203 are tightened, and the clamping bolts are used again to clamp the saw blade 203 inside the receiving grooves 2002 at the left and right ends to prevent the saw blade 203 from loosening, so as to ensure the stability of sawing.

[0079] For further details, please refer to Figure 8 As shown:

[0080] The sawing unit 200 also includes an air hole 2024, an air duct 2025, and an air bag 2026. The air hole 2024 is opened in the middle of the outer wall of the guide roller 2022, and the air duct 2025 is opened in the lower part of the outer wall of the guide roller 2022, and passes through the interior of the guide roller 2022, and extends to communicate with the interior of the air bag 2026. The height of the air duct 2025 is adapted to the bottom saw tooth height of the saw blade 203, and the air bag 2026 is fixedly installed at the opening of the air hole 2024 and protrudes from the outer wall height of the guide roller 2022.

[0081] Specifically, while the saw blade 203 swings back and forth between the front and rear guide rollers 2022, the guide roller 2022 is driven to rotate along the outer wall of the vertical axis 2021. The rotation of the guide roller 2022 further drives the airbag 2026 to rotate together. Since the airbag 2026 protrudes from the outer wall of the convex ring 2023, when the airbag 2026 contacts the surface of the saw blade 203 as the convex ring 2023 rotates, the airbag 2026 will be compressed, thereby blowing the air inside the air hole 2024 out through the air duct 2025. On the one hand, the saw blade 203 can be cooled, and on the other hand, the metal chips attached to the teeth of the saw blade 203 can be blown away, thereby ensuring the smoothness of the sawing of the saw blade 203.

[0082] For further details, please refer to Figure 6 As shown:

[0083] The grinding unit 300 includes a transverse axis 301, a rotating wheel 302, grinding teeth 303 and a torsion spring 304. The transverse axis 301 is rotatably installed between the front and rear metal frames 209. The rotating wheel 302 is fixedly installed in the middle of the outer wall of the transverse axis 301 and is located at the bottom of the saw blade 203. The grinding teeth 303 are fixedly installed on the outer wall of the rotating wheel 302, and the tooth tips are engaged with the saw teeth at the bottom of the saw blade 203. The torsion spring 304 is sleeved on the outer periphery of the transverse axis 301 and fixedly installed between the torsion spring 304 and the metal frame 209.

[0084] Specifically, when the saw blade 203 moves to the left, the serrations at the bottom drive the grinding teeth 303 engaged therewith to rotate counterclockwise, and the rotation of the grinding teeth 303 further drives the rotating wheel 302 and the horizontal axis 301 to rotate together, causing the torsion spring 304 to elastically deform. When the saw blade 203 moves to the right, the resilience of the torsion spring 304 drives the horizontal axis 301, the rotating wheel 302 and the grinding teeth 303 to rotate clockwise, causing the end of the grinding teeth 303 to rub against the serrations at the bottom of the saw blade 203, thereby grinding the serrations of the saw blade 203, making the serrations of the saw blade 203 sharper and ensuring sawing efficiency.

[0085] For further details, please refer to Figure 3 As shown:

[0086] The lifting unit 400 includes a fixed table 401, a servo cylinder 402 and a lifting plate 403. The fixed table 401 is fixedly installed at the bottom of the bed 100, the servo cylinder 402 is fixedly installed at the bottom of the fixed table 401, the output rod of the servo cylinder 402 movably passes through the interior of the fixed table 401 and extends to the periphery of its top, the lifting plate 403 is fixedly installed on the top of the output rod of the servo cylinder 402, a through groove slightly larger than the specification of the lifting plate 403 is opened on the top of the bed 100, the lifting plate 403 movably passes through the through groove, the top of the lifting plate 403 is provided with a clamping table for clamping in the left and right directions, the top of the top plate 2010 is penetrated by a makeshift groove 2028, and the push-pull block 204 is located inside the makeshift groove 2028.

[0087] Specifically, the mold steel is placed on the top of the lifting plate 403, and the mold steel is clamped and fixed by a clamping table with a left and right clamping effect arranged on the top of the lifting plate 403. The clamping table used in this sawing machine includes but is not limited to an electric clamping table and a pneumatic clamping table. After the mold steel is fixed, the lifting plate 403 is slowly lifted upward by the output rod of the servo cylinder 402, and the mold steel is slowly lifted upward, and the saw blade 203 moves back and forth left and right to achieve cutting of the mold steel.

[0088] In the present embodiment, a sawing machine for mold steel with adjustable cutting angle is used. First, the mold steel is placed on the top of the lifting plate 403, and the mold steel is clamped and fixed by a clamping table with a left and right clamping effect arranged on the top of the lifting plate 403. The clamping table used in the sawing machine includes but is not limited to an electric clamping table and a pneumatic clamping table. After the mold steel is fixed, the AC motor 206 is started, and the turntable 207 and the push pin 208 are driven to rotate through the output shaft of the AC motor 206. The rotation of the push pin 208 further drives the push block 204 to reciprocate left and right in cooperation with the sliding of the path groove 205. The reciprocating movement of the turntable 207 further drives the saw bow 202 to reciprocate left and right along the inside of the track 201, driving the saw blade 203 to move. At the same time, the servo The output rod of the service cylinder 402 slowly lifts the lifting plate 403 upwards, and slowly lifts the mold steel upwards, and cooperates with the saw blade 203 that reciprocates left and right to realize the cutting of the mold steel. At the same time, when the saw blade 203 moves to the left, the saw teeth at the bottom drive the grinding teeth 303 engaged therewith to rotate counterclockwise, and the rotation of the grinding teeth 303 further drives the rotating wheel 302 and the horizontal shaft 301 to rotate together, causing the torsion spring 304 to elastically deform. When the saw blade 203 moves to the right, the resilience of the torsion spring 304 drives the horizontal shaft 301, the rotating wheel 302 and the grinding teeth 303 to rotate clockwise, so that the end of the grinding teeth 303 rubs against the saw teeth at the bottom of the saw blade 203, thereby grinding the saw teeth of the saw blade 203, making the saw teeth of the saw blade 203 sharper, and ensuring the sawing efficiency;

[0089] The output shaft of the servo motor 2015 drives the active synchronous wheel 2016 to rotate, and further drives the four idler wheels 2014 to rotate around the four positioning shafts 2013 under the connection of the synchronous belt 2017. The rotation of the synchronous belt 2017 further drives the left and right linear sliders 2019 to slide along the two linear guide rails 2018 in the opposite direction, thereby driving the two vertical shafts 2021 and the guide rollers 2022 at the bottom thereof to move together. Since the saw blade 203 is clamped between the front and rear guide rollers 2022, the movement of the guide rollers 2022 drives the saw blade 203 to deform, resulting in an angle between the middle part of the saw blade 203 and the mold steel, thereby cutting the mold steel at different angles.

[0090] When the saw blade 203 swings back and forth between the front and rear guide rollers 2022, the guide roller 2022 is driven to rotate along the outer wall of the vertical axis 2021. The rotation of the guide roller 2022 further drives the airbag 2026 to rotate together. Since the airbag 2026 protrudes from the outer wall of the convex ring 2023, when the airbag 2026 contacts the surface of the saw blade 203 as the convex ring 2023 rotates, the airbag 2026 will be compressed, thereby blowing the air inside the air hole 2024 out through the air duct 2025. On the one hand, the saw blade 203 can be cooled, and on the other hand, the metal chips attached to the teeth of the saw blade 203 can be blown away, thereby ensuring the smoothness of the sawing of the saw blade 203.

[0091] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A sawing machine for mold steel with adjustable cutting angle, characterized in that: include: Bed (100); A sawing unit (200) is fixedly arranged on the top of the bed (100) and is used for cutting mold steel; Grinding units (300) are arranged on the top of the bed (100) and are used for grinding the sawing unit (200); The lifting unit (400) is fixedly arranged on the top of the bed (100) and is used for lifting the mold steel.

2. The sawing machine for mold steel with adjustable cutting angle according to claim 1, characterized in that: The sawing unit (200) comprises: A track (201) is fixedly arranged on the upper end of the bed (100); A saw bow (202) is slidably mounted inside the track (201); A saw blade (203) is fixedly mounted on the bottom of the saw bow (202); A push-pull block (204) is fixedly mounted on the top of the saw bow (202); A path groove (205) is formed through the front side of the push-pull block (204); An AC motor (206) is located on the back of the push-pull block (204); A rotating disk (207) is fixedly mounted on the end of the output shaft of the AC motor (206); A push pin (208) is fixedly mounted on the front of the rotating disk (207) and away from the center of the rotating disk (207), and the push pin (208) is slidably mounted inside the path groove (205); The metal frames (209) are fixedly mounted on the front and rear ends of the top of the bed (100) on the left and right sides; The top plate (2010) is fixedly mounted on the tops of the four AC motors (206), the AC motors (206) are fixedly mounted on the top of the top plate (2010), and the track (201) is fixedly mounted on the bottom of the top plate (2010).

3. The sawing machine for mold steel with adjustable cutting angle according to claim 2, characterized in that: The sawing unit (200) further comprises: The suspension rod (2011) is fixedly installed at the four bottom corners of the top plate (2010); A support plate (2012) is fixedly mounted on the bottom of the four suspension rods (2011); The positioning shaft (2013) is fixedly mounted at the four corners of the bottom of the support plate (2012); An idler wheel (2014) is rotatably mounted on the lower portion of the outer wall of the four positioning shafts (2013); A servo motor (2015) is fixedly mounted on the top rear end of the support plate (2012); An active synchronous wheel (2016) is fixedly mounted on the output shaft of the servo motor (2015); The synchronous belt (2017) is sleeved on the four idler wheels (2014) and the periphery of the servo motor (2015).

4. The sawing machine for mold steel with adjustable cutting angle according to claim 3, characterized in that: The sawing unit (200) further comprises: A linear guide rail (2018) is fixedly mounted on the bottom left end and the bottom right end of the support plate (2012); A linear slider (2019) is slidably mounted on the periphery of the linear guide rail (2018); A slide table (2020) is fixedly mounted on the bottom of the linear slide block (2019); A vertical shaft (2021) is fixedly mounted at the bottom front end and the bottom rear end of the slide (2020); The guide roller (2022) is rotatably mounted on the lower portion of the outer wall of the vertical shaft (2021), and the front and back sides of the saw blade (203) are in contact with the outer walls of the front and rear guide rollers (222) respectively.

5. The sawing machine for mold steel with adjustable cutting angle according to claim 4, characterized in that: The sawing unit (200) further comprises: The placement grooves (2002) are provided at both ends of the saw bow (202), and the saw blade (203) is pressed tightly inside the left and right placement grooves (2002) by bolts; A convex ring (2023) is fixedly mounted on the upper portion of the outer wall of the guide roller (2022); The groove (2027) is symmetrically arranged on the front upper part and the back upper part of the saw blade (203) with the central axis of the saw blade (203) in the front and back directions, and the convex ring (2023) is clamped in the interior of the groove (2027).

6. The sawing machine for mold steel with adjustable cutting angle according to claim 5, characterized in that: The sawing unit (200) further comprises: An air hole (2024) is provided in the middle of the outer wall of the guide roller (2022); An air passage (2025) is provided at the lower portion of the outer wall of the guide roller (2022), penetrates the interior of the guide roller (2022), and extends to communicate with the interior of the air bag (2026), wherein the height of the air passage (2025) matches the height of the bottom teeth of the saw blade (203); The air bag (2026) is fixedly mounted at the opening of the air hole (2024) and protrudes from the outer wall height of the guide roller (2022).

7. The sawing machine for mold steel with adjustable cutting angle according to claim 6, characterized in that: The polishing unit (300) comprises: A transverse shaft (301) is rotatably mounted between the front and rear metal frames (209); A rotating wheel (302) is fixedly mounted on the middle of the outer wall of the horizontal shaft (301) and is located at the bottom of the saw blade (203); The grinding teeth (303) are fixedly mounted on the outer wall of the rotating wheel (302), and the tooth tips are engaged with the saw teeth at the bottom of the saw blade (203); The torsion spring (304) is sleeved on the periphery of the transverse axis (301) and is fixedly installed between the torsion spring (304) and the metal frame (209).

8. The sawing machine for mold steel with adjustable cutting angle according to claim 7, characterized in that: The lifting unit (400) comprises: A fixed platform (401) is fixedly mounted on the bottom of the bed (100); A servo cylinder (402) is fixedly mounted on the bottom of the fixed platform (401), and an output rod of the servo cylinder (402) movably penetrates the interior of the fixed platform (401) and extends to the periphery of the top thereof; The lifting plate (403) is fixedly mounted on the top of the output rod of the servo cylinder (402). A through slot slightly larger than the specification of the lifting plate (403) is opened on the top of the bed (100), and the lifting plate (403) movably passes through the through slot.

9. The sawing machine for mold steel with adjustable cutting angle according to claim 8, characterized in that: A clamping platform for clamping in left and right directions is arranged on the top of the lifting plate (403).

10. The sawing machine for mold steel with adjustable cutting angle according to claim 9, characterized in that: A clearance groove (2028) is provided through the top of the top plate (2010), and the push-pull block (204) is located inside the clearance groove (2028).

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