Sawing machine

Abstract

The utility model discloses a sawing machine, which is used for cutting a first waste material part and a second waste material part on a material piece, and comprises a controller, a base, a clamping mechanism, a turnover mechanism, a first moving mechanism, a cutting mechanism and a second moving mechanism, when the clamping mechanism is located at the first position, the second moving mechanism drives the cutting mechanism to move in the Z-axis direction so as to cut a first waste part on the material piece in a linear mode in the YZ plane. And when the clamping mechanism is located at the second position, the second moving mechanism drives the cutting mechanism to move in the X-axis direction, and the second moving mechanism and the first moving mechanism jointly act to drive the cutting mechanism to move in the Z-axis direction again so as to move in the space to cut a second waste part on the material part in a curve mode. According to the utility model, material handles and residual pouring gates of some special-shaped workpieces can be automatically cut off in the whole process, manual participation is not needed, the production safety is improved, and the product yield is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal cutting, especially a sawing machine. BACKGROUND

[0002] There are many methods for machining mechanical parts in modern mechanical manufacturing: in addition to cutting, there are casting, forging, welding, stamping, extrusion, etc. Before the material parts are processed into finished products, they generally need to be finally processed on a machine tool by cutting. With the development of modern manufacturing industry towards high efficiency, high precision and economy, sawing as the starting point of fine cutting has become an important component in the process of part machining. Sawing can save materials, reduce secondary processing amount and improve production efficiency, so sawing machines have been widely used in various fields of national economy such as steel, machinery, automobile, shipbuilding, petroleum, mining and aerospace.

[0003] The die casting has a material handle and a runner, which are production accessories and need to be cut off. However, due to the irregular or curved shape of the material handle and the runner of some special-shaped workpieces, the sawing path of the existing sawing machine can only go straight, and some curves cannot be effectively sawed. At present, most of the material handle is cut off by using a general sawing machine, and then manually sawed to cut off the large part of the runner, and the remaining part is knocked off with a wooden hammer. First, it is not safe, and second, the product may have a lack of meat during the knocking process, resulting in product scrap. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a sawing machine which can automatically cut off the material handle and the residual runner of some special-shaped workpieces without manual participation, improves production safety and has high product yield.

[0005] The utility model realizes the following technical scheme:

[0006] A sawing machine is used for cutting a first waste part and a second waste part on a material part, and the sawing machine comprises a controller and a base, and further comprises:

[0007] A clamping mechanism is used for fixing the material part;

[0008] A turnover mechanism is used for driving the clamping mechanism to turn between a first position and a second position;

[0009] A first moving mechanism is used for driving the turnover mechanism to move along the Y-axis direction;

[0010] A cutting mechanism is used for cutting the first waste part and the second waste part on the material part respectively;

[0011] A second moving mechanism is fixedly connected with the base, and the second moving mechanism is used for driving the cutting mechanism to move in the XZ plane.

[0012] The controller is signal connected with the first moving mechanism, the second moving mechanism, the cutting mechanism, the clamping mechanism and the overturning mechanism simultaneously;

[0013] When the clamping mechanism is located at the first position, the second moving mechanism drives the cutting mechanism to move to a first cutting station along the X-axis direction, and drives the cutting mechanism to move along the Z-axis direction again to cut a first waste part on the material piece in a straight line in the YZ plane;

[0014] When the clamping mechanism is located at the second position, the second moving mechanism drives the cutting mechanism to move to a second cutting station along the X-axis direction, and cooperates with the first moving mechanism to drive the cutting mechanism to move along the Z-axis direction again to cut a second waste part on the material piece in a curve in space.

[0015] Further, the first waste part includes a handle outside the material piece, and the second waste part includes a riser between the material piece and the handle.

[0016] Further, the overturning mechanism includes an overturning oil cylinder, an overturning table and an overturning shaft, the overturning oil cylinder is used to push the overturning table to rotate around the axis of the overturning shaft to switch between the first position and the second position.

[0017] Further, the overturning mechanism further includes an oil cylinder fixing seat and a first fixing seat, the oil cylinder fixing seat is fixedly connected with the first fixing seat, the overturning oil cylinder is rotationally connected with the oil cylinder fixing seat, and an output shaft of the overturning oil cylinder is rotationally connected with the overturning table, the overturning table is hinged with the overturning shaft, the overturning oil cylinder can drive the overturning table to overturn between the first position and the second position, and the clamping mechanism is fixedly connected with the overturning table.

[0018] Further, the overturning mechanism further includes a first limiting piece, the first limiting piece is fixedly connected with the first fixing seat, and the first limiting piece abuts against the overturning table when the overturning table overturns to the second position.

[0019] Further, the overturning mechanism further includes a second limiting piece, the second limiting piece is fixedly connected with the first fixing seat, and the second limiting piece abuts against the overturning table when the overturning table overturns to the first position.

[0020] Further, the overturning mechanism further includes a buffer device, the buffer device is fixedly connected with the first fixing seat, and the buffer device is higher than the second limiting piece and is used to buffer the overturning table when the overturning table overturns to the first position.

[0021] Further, the clamping mechanism comprises a second fixing base and a clamping cylinder, the second fixing base is fixedly connected with the turnover mechanism, the clamping cylinder is fixedly connected with the second fixing base, a clamping arm is arranged on the clamping cylinder, and a clamping column corresponding to the clamping arm is further fixedly connected with the second fixing base, the material piece is arranged between the clamping column and the clamping arm, and the clamping cylinder can drive the clamping arm to move towards the clamping column to fix the material piece.

[0022] Further, the clamping mechanism further comprises a guide plate, the guide plate is fixedly connected with the second fixing base, and an inclined surface is formed on the guide plate, the inclined surface plays a guiding role on the material piece when the material piece is installed.

[0023] Further, the clamping mechanism further comprises a positioning column, the positioning column is fixedly connected with the second fixing base, and the positioning column is matched with the threaded hole of the material piece.

[0024] Further, the clamping mechanism further comprises a limiting block, the limiting block is fixedly connected with the second fixing base, and the limiting block is in abutment with the material piece.

[0025] Further, the cutting mechanism comprises a saw blade, and the saw blade is a disc saw blade.

[0026] Further, the sawing machine is arranged in a die casting island production line, the die casting island production line comprises a feeding robot, the feeding robot is used for placing the material piece on the clamping mechanism, and the feeding robot is signal-connected with the controller.

[0027] Compared with the prior art, the utility model has the advantages that:

[0028] 1. The utility model discloses a full-enclosed structure, a disc saw blade is used as a cutting tool, a CNC numerical control system is controlled, and signal interaction is carried out between the feeding robot (three-coordinate system robot), so that the sawing process automation is realized, and all gates can be cut off, and the sawing speed is controlled through the numerical control system.

[0029] 2. The utility model discloses a turnover mechanism, and the turnover mechanism can overturn the material piece from a first position to a second position, so that the cutting direction of the saw blade is different, and through the three-axis linkage of XYZ axes, the curved riser can be cut off, and the automatic sawing of some special-shaped workpiece gates is realized.

[0030] 3. The cutting mechanism of the utility model uses a disc saw blade, compared with a traditional band saw blade, the service life of the disc saw blade is long, the sawing cost of single product is reduced, and due to the small initial cutting surface, the material handle and the riser can be better controlled and accurately cut without damaging the material piece.

[0031] 4. The utility model discloses use the turnover oil cylinder driven by hydraulic pressure as the driving part of turnover mechanism, and the hydraulic mode is stable as the power torque output, and the occupied space is small. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structure schematic diagram of sawing machine of an embodiment of the utility model;

[0033] Figure 2 It is the partial structure schematic diagram of sawing machine of an embodiment of the utility model;

[0034] Figure 3 It is the assembly schematic diagram of turnover mechanism, clamping mechanism and material piece of an embodiment of the utility model;

[0035] Figure 4 It is the second position structure schematic diagram of clamping mechanism of an embodiment of the utility model;

[0036] Figure 5 It is the structure schematic diagram of clamping mechanism of an embodiment of the utility model;

[0037] Figure 6 It is the assembly schematic diagram of clamping mechanism and material piece of an embodiment of the utility model;

[0038] Figure 7 It is the structure schematic diagram of first cutting station of an embodiment of the utility model;

[0039] Figure 8 It is the structure schematic diagram of second cutting station of an embodiment of the utility model.

[0040] Explanation of reference numerals: 1, controller;2, base;3, shell;30, feed inlet;31, automatic door;4, first moving mechanism;40, protective cover;5, second moving mechanism;6, turnover mechanism;60, oil cylinder fixing seat;61, turnover oil cylinder;610, output shaft;611, rotating shaft;612, knuckle bearing;62, turnover table;63, turnover shaft;64, first fixing seat;640, first rotating bearing;641, shaft seat;642, second rotating bearing;65, first limiting piece;66, second limiting piece;67, buffer device;7, clamping mechanism;70, second fixing seat;71, clamping cylinder;710, clamping arm;711, clamping column;712, rotating arm;72, guide plate;720, inclined plane;73, positioning column;74, limiting block;8, cutting mechanism;80, saw blade;9, material piece;90, first waste material part;91, second waste material part. DETAILED DESCRIPTION

[0041] The technical solutions of the utility model are further and non-restrictively described in detail below in combination with the preferred embodiments and the drawings. In the description of the utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0042] As Figure 1 With Figure 2 As shown in the utility model one embodiment of a sawing machine for cutting first waste material part 90 and second waste material part 91 on the workpiece 9. The sawing machine includes cutting mechanism 8, clamping mechanism 7, turnover mechanism 6, second moving mechanism 5, first moving mechanism 4 and controller 1 and base 2. Wherein, the base 2 is a square closed type machine case, and the inside is provided with control circuit. The controller 1 is signal connected with the first moving mechanism 4, the second moving mechanism 5, the cutting mechanism 8, the clamping mechanism 7 and the turnover mechanism 6. And the controller 1 is controlled by CNC numerical control system, realizing the automation of sawing process.

[0043] In the embodiment, the workpiece 9 is taken as an example of injection molding, wherein the first waste material part 90 can be a handle, and the second waste material part 91 can be a riser, wherein the handle is located outside the riser. It is worth noting that the riser is adaptively arranged according to the workpiece 9, and the shape is mostly curved, wherein the root connected with the workpiece 9 will protrude from the workpiece, so as to facilitate cutting to obtain the finished workpiece 9.

[0044] The cutting mechanism 8 is used for cutting the first waste material part 90 and the second waste material part 91 on the workpiece 9 respectively, the clamping mechanism 7 is used for fixing the workpiece 9, the turnover mechanism 6 can drive the clamping mechanism 7 to turn between the first position and the second position, the second moving mechanism 5 is fixedly connected with the base 2 and can drive the cutting mechanism 8 to move in the XZ plane to cut the workpiece 9, and the first moving mechanism 4 is used for driving the turnover mechanism 6 to move along the Y axis direction.

[0045] Referring to Figure 7 With Figure 8When the clamping mechanism 7 is located at the first position, the second moving mechanism 5 drives the cutting mechanism 8 to move to the first cutting station along the X-axis direction, and drives the cutting mechanism 8 to move again along the Z-axis direction to cut the sprue on the material piece 9 in a straight line in the YZ plane; when the clamping mechanism 7 is located at the second position, the second moving mechanism 5 drives the cutting mechanism 8 to move to the second cutting station along the X-axis direction, and cooperates with the first moving mechanism to drive the cutting mechanism 8 to move again in space to cut the sprue on the material piece 9 in a curve. The utility model discloses a linkage of Z-axis, X-axis and Y-axis is arranged, a turnover mechanism 6 that can overturn the material piece 9 is arranged in the tooling, and the cutting mechanism 8 on the Z-axis is arranged simultaneously, so that the excess sprue and the sprue on the material piece 9 can be cut off in a straight line or a curve, thereby meeting the effective cutting of the sprue of different shapes.

[0046] Optionally, the first moving mechanism 4 is a single-axis moving module, and the second moving mechanism 5 is a two-axis moving module, both of which are driven by servo motors, are accurate and controllable, and are provided with retractable protective covers 40.

[0047] Optionally, the sawing machine further comprises a shell 3, the shell 3 is arranged on the base 2, and the cutting mechanism 8, the clamping mechanism 7, the turnover mechanism 6, the second moving mechanism 5 and the first moving mechanism 4 are arranged in the internal space of the shell 3, so as to reduce the influence of scattered sawing powder and waste on the working environment.

[0048] Optionally, the shell 3 is provided with a feeding port 30, and the first moving mechanism 4 is arranged outside the shell 3 at least partially through the feeding port 30, so that the clamping mechanism 7 can be driven to move to the outside of the shell 3 for feeding.

[0049] Optionally, the shell 3 is further provided with an automatic door 31 electrically connected with the controller 1. The automatic door 31 can move along the X-axis direction to close the feeding port 30 during sawing, so as to prevent the powder generated during sawing from being scattered.

[0050] Further referring to Figure 3 With Figure 4 The turnover mechanism 6 comprises a cylinder fixing seat 60, a turnover cylinder 61, a turnover table 62, a turnover shaft 63 and a first fixing seat 64. The turnover cylinder 61 is used for pushing the turnover table 62 to rotate around the axis line of the turnover shaft 63, so that the turnover table 62 can be switched back and forth between the first position and the second position, so that the material piece 9 can be in different positions for cutting.

[0051] Specifically, the first fixed seat 64 is fixed with the sliding block of the first moving mechanism 4 through a screw (not shown in the figure). The oil cylinder fixed seat 60 is fixedly connected with the first fixed seat 64. The turnover oil cylinder 61 is rotationally connected with the oil cylinder fixed seat 60. The output shaft 610 of the turnover oil cylinder 61 is rotationally connected with the turnover table 62. The turnover table 62 is hingedly connected with the turnover shaft 63. The turnover oil cylinder 61 can drive the turnover table 62 to turn between the first position and the second position. The clamping mechanism 7 is fixedly connected with the turnover table 62 so as to be synchronously turned.

[0052] Further, the first fixed seat 64 is provided with two first rotation bearings 640. The turnover oil cylinder 61 is fixedly provided with a rotating shaft 611. The two ends of the rotating shaft 611 are respectively matched with the two first rotation bearings 640. The end of the output shaft 610 of the turnover oil cylinder 61 is fixedly provided with a joint bearing 612. The joint bearing 612 is matched with the turnover table 62. The first fixed seat 64 is further fixedly provided with two shaft seats 641. The two shaft seats 641 are respectively provided with second rotation bearings 642. The two ends of the turnover shaft 63 are respectively matched with the two second rotation bearings 642. The turnover oil cylinder 61 drives the output shaft 610 to extend or retract through hydraulic drive, so as to drive the turnover table 62 to rotate around the axial direction of the turnover shaft 63. In the process of the above-mentioned extension and retraction, the turnover cylinder 63 can be adaptively rotated in the YZ plane, so that the first position of the turnover table 62 is located in the XY plane, and the second position is located in the YZ plane. In the embodiment, the turnover mechanism 6 adopts a hydraulic mode as a power torque output to be stable, and occupies a small space.

[0053] For emphasis Figure 3 Optionally, the turnover mechanism 6 further comprises a first limiting piece 65. The first limiting piece 65 is fixedly connected with the first fixed seat 64. When the turnover table 62 is turned to the second position, the first limiting piece 65 abuts against the turnover table 62. Thus, the turnover table 62 can be accurately stopped at the required position, i.e. the second position, after rotation. Specifically, in the embodiment, the second position is a position where the sprue of the workpiece 9 is parallel to the saw blade 80 of the cutting mechanism 8.

[0054] For emphasis Figure 4 Optionally, the turnover mechanism 6 further comprises a second limiting piece 66. The second limiting piece 66 is fixedly connected with the first fixed seat 64. When the turnover table 62 is turned to the first position, the second limiting piece 66 abuts against the turnover table 62. Thus, the turnover table 62 can be accurately stopped at the initial position, i.e. the first position, after rotation. Specifically, in the embodiment, the first position is a position where the handle of the workpiece 9 is perpendicular to the saw blade 80 of the cutting mechanism 8. In addition, in the embodiment, two second limiting pieces 66 are provided. The two second limiting pieces 66 respectively abut against the two corners on the same side of the turnover table 62, so as to improve the stability when the turnover motion is stopped.

[0055] Optionally, the turnover mechanism 6 further comprises a buffer device 67, the buffer device 67 is fixedly connected with the first fixing seat 64, and the buffer device 67 is higher than the second limiting piece 66 in the Z-axis direction, so as to buffer the turnover table 62 when the turnover table 62 is turned to the first position, thereby avoiding excessive vibration of the turnover table 62 from damaging the workpiece or the mechanism. In addition, two buffer devices 67 are arranged in the embodiment, and are arranged at the periphery of the second limiting piece 66 to improve the stability of the turnover table 62 when the turnover table 62 contacts the buffer device 67.

[0056] Further referring to Figure 5 and Figure 6 The clamping mechanism 7 comprises a second fixing seat 70 and a clamping cylinder 71. The second fixing seat 70 is fixedly connected with the turnover mechanism 6 through a screw (not shown in the figure), and the clamping cylinder 71 is also fixedly connected with the second fixing seat 70 through a screw. The clamping cylinder 71 is provided with a clamping arm 710, and the second fixing seat 70 is further fixedly connected with a clamping column 711. The clamping arm 710 and the clamping column 711 are correspondingly arranged, the material piece 9 is arranged between the clamping column 711 and the clamping arm 710, and the clamping cylinder 71 can drive the clamping arm 710 to move towards the clamping column 711 to fix the material piece 9.

[0057] In the embodiment, three clamping cylinders 71 are arranged according to the specific shape of the material piece 9, and each of the three clamping cylinders 71 is correspondingly provided with a clamping column 711. The three clamping cylinders 71 are arranged in a triangular shape to more stably fix the material piece 9. It can be understood that in other optional embodiments, more clamping cylinders 71 and clamping columns 711 can also be arranged, as long as they can stably fix the material piece 9.

[0058] Optionally, the clamping arm 710 is further fixedly provided with a rotating arm 712, the rotating arm 712 can drive the clamping arm 710 to rotate, thereby facilitating the placement of the material piece 9.

[0059] Optionally, the clamping mechanism 7 further comprises a guide plate 72, the guide plate 72 is fixedly connected with the second fixing seat 70, and the guide plate 72 is formed with an inclined surface 720, the inclined surface 720 is arranged towards the material piece 9, so that in the process of placing the material piece 9, the inclined surface 720 guides the material piece 9 when abutting against the material piece 9. At the same time, the guide plate 72 can also support the material piece 9 when the turnover table 62 is turned to the second position.

[0060] Optionally, the clamping mechanism 7 further comprises a positioning column 73, the positioning column 73 is fixedly connected with the second fixing seat 70, and the positioning column 73 is matched with a threaded hole of the material piece 9 to position the material piece 9 when the material piece 9 is placed.

[0061] Optionally, the clamping mechanism 7 further comprises a limiting block 74, the limiting block 74 is fixedly connected with the second fixing seat 70, and the limiting block 74 is in abutment with the material piece 9; the limiting block 74 can be customized according to the shape of the material piece 9, and can be fitted with part of the shape of the material piece 9, thereby supporting the material piece 9.

[0062] In addition, the cutting mechanism 8 in the embodiment comprises a saw blade 80, and the saw blade 80 is a disc saw blade. Compared with a band saw used in a traditional sawing machine, the disc saw blade has a long service life and reduces the sawing cost of a single product. Meanwhile, due to a small initial cutting surface, the material handle 90 and the riser 91 can be precisely cut without damaging the material piece 9.

[0063] Optionally, the sawing machine is arranged in a die casting island production line, and the die casting island production line comprises a feeding robot, the feeding robot is signal connected with the controller 1 and is used for placing the material piece 9 on the clamping mechanism 7, and the feeding robot is used for feeding and discharging to save labor and improve safety.

[0064] In work, the jig, i.e., the turnover mechanism 6 and the clamping mechanism 7, is initially located outside the shell 3, the feeding robot in the die casting island production line grabs the material piece 9 and places the material piece 9 on the clamping mechanism 7, the clamping cylinder 71 drives the clamping arm 710 to move towards the clamping column 711 to fix the material piece 9, the first moving mechanism 4 drives the jig to move along the Y axis into the shell 3, the automatic door 31 is closed under the control of the controller 1, the jig moves to the cutting position, the controller 1 detects the signal of the servo motor in the first moving mechanism 4 and calculates the position according to the signal, then the second moving mechanism 5 drives the cutting mechanism 8 to the first cutting station, at this time, the clamping mechanism 7 is in the first position, the second moving mechanism 5 and the first moving mechanism 4 are linked to cut off the material handle 90 in a straight line, then the turnover cylinder 61 in the turnover mechanism 6 drives the output shaft 610 to extend, the clamping mechanism 7 is turned to the second position, at this time, the material piece 9 is also in the second position, the second moving mechanism 5 drives the cutting mechanism 8 to the second cutting station, the second moving mechanism 5 and the first moving mechanism 4 are linked to cut off the riser 91 in a curved way, finally, the second moving mechanism 5 drives the cutting mechanism 8 to retreat to a safe position, the turnover mechanism 6 turns the clamping mechanism 7 back to the first position, the controller 1 controls the automatic door 31 to open and controls the first moving mechanism 4 to drive the jig to move to the outside of the shell 3, and the feeding robot takes down the cut material piece 9.

[0065] The sawing machine in the utility model adopts a fully enclosed structure, the disc saw blade is used as a cutting tool, the controller 1 adopts a CNC numerical control system for control, signal interaction is realized between the controller 1 and the feeding robot, the sawing process is automated, all the runners can be cut off, the XYZ axis three-axis linkage can cut off the curved riser, and the sawing speed is controlled through the numerical control system.

[0066] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A sawing machine for cutting a first waste portion (90) and a second waste portion (91) on a piece (9), comprising a controller (1) and a base (2), characterized in that, The sawing machine further comprises: a clamping mechanism (7) for fixing the material piece (9); a turnover mechanism (6) capable of driving the clamping mechanism (7) to turn between a first position and a second position; a first moving mechanism (4) for driving the turnover mechanism (6) to move along the Y-axis direction; a cutting mechanism (8) for cutting the first waste part (90) and the second waste part (91) on the material piece (9) respectively; a second moving mechanism (5) fixedly connected with the base (2), capable of driving the cutting mechanism (8) to move in the XZ plane; the controller (1) is signal connected with the first moving mechanism (4), the second moving mechanism (5), the cutting mechanism (8), the clamping mechanism (7) and the turnover mechanism (6) simultaneously; when the clamping mechanism (7) is in the first position, the second moving mechanism (5) drives the cutting mechanism (8) to move to a first cutting station along the X-axis direction, and drives the cutting mechanism (8) to move along the Z-axis direction again to cut the first waste part (90) on the material piece (9) in a straight line in the YZ plane; when the clamping mechanism (7) is in the second position, the second moving mechanism (5) drives the cutting mechanism (8) to move to a second cutting station along the X-axis direction, and cooperates with the first moving mechanism (4) to drive the cutting mechanism (8) to move in space to cut the second waste part (91) on the material piece (9) in a curve.

2. The sawing machine according to claim 1, characterized in that The first waste part (90) comprises a handle outside the material piece (9), and the second waste part (91) comprises a sprue between the material piece (9) and the handle.

3. The sawing machine according to claim 1, characterized in that The turnover mechanism (6) comprises a turnover oil cylinder (61), a turnover table (62) and a turnover shaft (63), the turnover oil cylinder (61) is used for pushing the turnover table (62) to rotate around the axis of the turnover shaft (63) to switch back and forth between the first position and the second position.

4. Sawing machine according to claim 3, characterized in that The turnover mechanism (6) further comprises an oil cylinder fixing seat (60) and a first fixing seat (64), the oil cylinder fixing seat (60) is fixedly connected with the first fixing seat (64), the turnover oil cylinder (61) is rotationally connected with the oil cylinder fixing seat (60), the output shaft (610) of the turnover oil cylinder (61) is rotationally connected with the turnover table (62), the turnover table (62) is hinged with the turnover shaft (63), the turnover oil cylinder (61) can drive the turnover table (62) to turn between the first position and the second position, and the clamping mechanism (7) is fixedly connected with the turnover table (62).

5. Sawing machine according to claim 4, characterized in that The turnover mechanism (6) further comprises a first limiting piece (65), the first limiting piece (65) is fixedly connected with the first fixing seat (64), and when the turnover table (62) turns to the second position, the first limiting piece (65) abuts against the turnover table (62).

6. The sawing machine according to claim 4, characterized in that, The turnover mechanism (6) further comprises a second limiting piece (66), which is fixedly connected with the first fixed seat (64), and abuts against the turnover table (62) when the turnover table (62) is turned to the first position.

7. The sawing machine according to claim 4, characterized in that, The turnover mechanism (6) further comprises a buffer device (67), which is fixedly connected with the first fixed seat (64) and is higher than the second limiting piece (66), and is used for buffering the turnover table (62) when the turnover table (62) is turned to the first position.

8. The sawing machine according to claim 1, characterized in that, The clamping mechanism (7) comprises a second fixed seat (70) and a clamping cylinder (71), the clamping cylinder (71) is fixedly connected with the second fixed seat (70), the clamping cylinder (71) is provided with a clamping arm (710), the second fixed seat (70) is further fixedly connected with a clamping column (711) corresponding to the clamping arm (710), the material piece (9) is arranged between the clamping column (711) and the clamping arm (710), and the clamping cylinder (71) can drive the clamping arm (710) to move towards the clamping column (711) to fix the material piece (9).

9. Sawing machine according to claim 8, characterized in that The clamping mechanism (7) further comprises a guide plate (72), which is fixedly connected with the second fixed seat (70), and a slope (720) is formed on the guide plate (72), which guides the material piece (9) when the material piece (9) is installed.

10. The sawing machine according to claim 8, characterized in that The clamping mechanism (7) further comprises a positioning column (73), which is fixedly connected with the second fixed seat (70), and the positioning column (73) is matched with the screw hole of the material piece (9).

11. The sawing machine according to claim 8, characterized in that The clamping mechanism (7) further comprises a limiting block (74), which is fixedly connected with the second fixed seat (70), and abuts against the material piece (9).

12. The sawing machine according to claim 1, characterized in that, The cutting mechanism (8) comprises a saw blade (80), which is a disc saw blade.

13. The sawing machine according to claim 1, characterized in that, The sawing machine is arranged in a die casting island production line, the die casting island production line comprises a feeding robot, which is used for placing the material piece (9) on the clamping mechanism (7), and the feeding robot is signal connected with the controller (1).

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