A casting head cutting machine

Abstract

The application provides a casting riser cutting machine, aiming at solving the poor cutting effect of the prior art. The device comprises a base; a band saw machine connected above the base; a moving unit connected between the base and the band saw machine, comprising a Y-axis moving module and a Z-axis moving module, both of which are composed of a guide mechanism and a guide driving mechanism; an angle adjusting module configured to adjust the pitch angle of the band saw machine; the angle adjusting module comprises a rotary connecting piece, a first rotary support and a rotary driving mechanism, one end of the rotary connecting piece is fixedly connected with the moving unit or the band saw machine, the other end is fixedly connected with the inner ring or the outer ring of the first rotary support, and the output end of the rotary driving mechanism is in transmission connection with the outer ring or the inner ring of the first rotary support. The device adopts a physical cutting mode instead of traditional flame cutting, effectively avoids the cracking and scrapping problems during casting cutting, and is safe to operate, saves raw materials and labor costs.

Description

Technical Field

[0001] This invention relates to the field of cutting device technology, and more specifically to a casting riser cutting machine. Background Technology

[0002] The cutting of risers in castings still relies on traditional flame cutting methods. Flame cutting not only makes it difficult to control precision and results in uneven surfaces, but also has the following unavoidable drawbacks: First, it is costly and labor-intensive for workers. The cutting process consumes large amounts of oxygen and gaseous fuel, and produces toxic fumes that severely pollute the environment and pose a significant health risk. Second, it wastes raw materials; the approximately 30mm cut kerf and the surface of both cut surfaces turn into iron oxide, especially when there is sand adhering to the riser root, resulting in even larger cut kerfs and more severe waste. Third, castings may crack due to excessively high temperatures, increasing the need for secondary repairs. A considerable number of castings are scrapped because their cracks are irreparable. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a casting riser cutting machine to achieve high-temperature, low-loss, and high-precision cutting of casting risers.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A casting riser cutting machine, comprising: Base; Band saw, connected to the top of the base; The moving unit, connected between the base and the band saw, includes a Y-axis moving module and a Z-axis moving module. Both modules consist of a guide mechanism and a guide drive mechanism, which are used to drive the band saw to move independently along the Y and Z directions, respectively. An angle adjustment module is configured to adjust the pitch angle of the band saw. The angle adjustment module includes a slewing connector, a first slewing bearing, and a slewing drive mechanism. One end of the slewing connector is fixedly connected to the moving unit or band saw, and the other end is fixedly connected to the inner or outer ring of the first slewing bearing. The output end of the slewing drive mechanism is connected to the outer or inner ring of the first slewing bearing via a transmission connection.

[0005] Furthermore, the band saw includes a saw frame, a drive wheel, a driven wheel, a closed-loop saw blade, and a cutting motor. The drive wheel and the driven wheel are rotatably connected to both sides of the saw frame in the X direction, respectively. The closed-loop saw blade is connected between the drive wheel and the driven wheel. The cutting motor is fixedly connected to the saw frame, and its output shaft is drivenly connected to the drive wheel.

[0006] Furthermore, a tensioning device is connected between the driven wheel and the saw frame. The tensioning device includes a tensioning slide plate, a driven wheel support plate, and a tensioning guide drive mechanism. The tensioning slide plate is slidably connected to the saw frame along the X direction. The driven wheel is rotatably connected to the driven wheel support plate, and the driven wheel support plate and the tensioning slide plate are detachably and fixedly connected. The driven wheel is rotatably connected to the driven wheel support plate along the Z direction. The tensioning guide drive mechanism is installed on the saw frame, and its output end is fixedly connected to the tensioning slide plate.

[0007] Furthermore, a sliding guide device is connected between the saw frame and the closed-loop saw blade on the inner side of both the driving wheel and the driven wheel. The sliding guide device consists of a guide arm and a guide head. The guide arm is distributed along the Y direction in the length direction, with one end slidingly connected to the saw frame along the X direction and the other end fixed to the guide head.

[0008] Furthermore, a fixed guide device is connected between the saw frame and the closed-loop saw blade on the inner side of both the drive wheel and the driven wheel. The fixed guide device includes a guide head, and the guide head on the inner side of the drive wheel is fixedly connected to the saw frame, while the guide head on the inner side of the driven wheel is fixedly connected to the driven wheel bearing plate.

[0009] Furthermore, the guide head includes a guide head connecting plate, a guide seat, a guide head main plate, an adjusting plate, an outer guide body, an inner guide body, and a pressure block. The guide seat is fixedly connected to the saw frame via the guide head connecting plate. The guide head main plate is rotatably connected to the guide seat along the Y direction. The adjusting plate is fixedly connected below the guide head main plate. The outer guide body is adjustablely fixedly connected below the adjusting plate along the Z direction. The inner guide body is adjustablely fixedly connected below the outer guide body along the Z direction. The outer guide body and the inner guide body are located on both sides of the closed-loop saw blade in the Y direction, and a gap is provided between them in the Y direction for guiding the sliding of the closed-loop saw blade. The pressure block is connected between the lower end face of the outer guide body and the upper end face of the closed-loop saw blade.

[0010] Furthermore, a pressure sensor for detecting the pressure of the guide head on the closed-loop saw blade in the Z direction is provided between the guide head and the saw frame.

[0011] Furthermore, it also includes an X-axis moving module for driving the band saw to move along the X direction, the X-axis moving module consisting of an X-axis guiding mechanism and an X-axis guiding transmission mechanism.

[0012] Furthermore, it also includes a rotating module for driving the band saw to rotate, the rotation axis of the rotating module being distributed along the Z direction.

[0013] Furthermore, the rotating module includes a rotating connector, a second slewing bearing, and a rotating drive mechanism. The rotating connector is fixedly connected to the inner or outer ring of the second slewing bearing, and the output end of the rotating drive mechanism is drivenly connected to the outer or inner ring of the second slewing bearing.

[0014] The technical solution provided by this invention has the following advantages compared with the prior art: 1. The pitch angle of the band saw can be adjusted by setting the angle adjustment module, so that the pitch angle of the closed-loop saw blade plane matches the cutting surface, thereby improving the cutting accuracy; 2. By setting up X-axis movement modules, Y-axis movement modules, and Z-axis movement modules, the position of the band saw can be adjusted along the X, Y, and Z axes respectively, further improving cutting accuracy; 3. This device, through the added rotating module, can drive the band saw to rotate 360 ​​degrees along the Z-axis, thereby adjusting the left and right angles between the closed-loop saw blade plane and the cutting surface to match, and at the same time, the rotating band saw can cut the parts around the base in multiple directions. 4. A tensioning device is installed between the saw frame and the driven wheel to adjust the relative position between the driving wheel and the driven wheel, thereby tensioning or loosening the closed-loop saw blade; 5. A fixed guide device is used on the driven wheel side to connect with the tensioning device. The guide head on the driven wheel side can automatically adjust the distance between itself and the guide head on the driving wheel side as the driven wheel moves. 6. The special guide head consists of an outer guide body and an inner guide body respectively set on the inner and outer sides of the closed-loop saw blade. The adjusting bolts set between the outer guide body and the adjusting plate can adjust the Z-direction distance between the outer guide body and the closed-loop saw blade, thereby ensuring that the closed-loop saw blade is pressed tightly by the pressure block. Moreover, the position of the outer guide body and the inner guide body in the height direction (Z direction) can also be adjusted by adjusting bolts. In addition, by setting a guide seat, the guide head can be rotated left and right around the Y-axis and connected to the saw frame. The outer guide body can rotate and adjust the angle with the up and down displacement of the closed-loop saw blade, ensuring that the pressure block always presses the saw back (i.e., the upper end face of the closed-loop saw blade) with the maximum area. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a left view of the structure of the first embodiment of the present invention (with the drive wheel and cutting motor removed). Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a front view of the structure of the first embodiment of the present invention (without the band saw). Figure 4 This is a front view of the band saw structure in the first embodiment of the present invention; Figure 5 for Figure 4 A magnified view of a portion of point B in the middle; Figure 6 This is a top view of a band saw with a sliding guide device in the first embodiment of the present invention; Figure 7 Left view of the structure of the second and third embodiments of the present invention; Figure 8 These are the main structural views of the second and third embodiments of the present invention; Figure 9 This is a left view of the structure of the fourth embodiment of the present invention; Figure 10 This is a left view of the structure of the fifth embodiment of the present invention; Figure 11 This is a front view of the structure of the fifth embodiment of the present invention (excluding the band saw). in: 1-Base, 2-Y-guide rail, 3-Y-axis slider, 4-Y-axis drive motor, 5-Y-axis lead screw, 6-Y-axis nut, 7-Slewing connector, 8-First slewing bearing, 9-Slewing drive motor, 10-Slewing drive gear, 11-Connecting frame, 12-Z-axis drive motor, 13-Z-axis lead screw, 14-Z-axis nut, 15-Z-guide rail, 16-Z-axis slide plate, 17-Z-axis slider, 18-Saw frame, 19-Tensioning guide rail, 20-Tensioning slider, 21-Tensioning slide plate, 22-Driven wheel support plate, 23-First adjusting bolt, 24-Cutting motor, 25-Driven wheel, 26-Driven wheel, 27-Closed-loop saw blade, 28-Driven wheel shaft, 29-Driven wheel 30-Tension drive motor, 31-Tension screw, 32-Tension nut, 33-Guide head connecting plate, 34-Guide seat, 35-Guide head main board, 36-Pressure sensor, 37-Adjusting plate, 38-Second adjusting bolt, 39-Outer guide body, 40-Inner guide body, 41-Third adjusting bolt, 42-Pressure block, 43-Guide arm, 44-Band saw guide head, 45-X-direction guide rail, 46-X-direction slider, 47-X-direction drive motor, 48-X-direction screw, 49-X-direction nut, 50-X-direction slide plate, 51-Rotary connector, 52-Second slewing bearing, 53-Rotary drive motor, 54-Rotary drive gear, 55-Rotating body. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] In the following embodiments, in order to more clearly describe the technical solution, Figure 3 Using the view reference, the X direction is the horizontal direction to the left and right, the Y direction is the horizontal direction to the front and back, and the Z direction is the vertical direction.

[0019] First Embodiment like Figures 1-6 As shown, a casting riser cutting machine includes a base 1, a Y-axis moving module, a Z-axis moving module, an angle adjustment module, and a band saw. The Y-axis moving module and the Z-axis moving module can drive the band saw to move along the Y and Z directions respectively, thereby adjusting the position of the band saw in the front-back and up-down directions. The angle adjustment module can adjust the pitch angle of the band saw.

[0020] Specifically, the Y-axis movement module consists of a Y-axis guiding mechanism and a Y-axis guiding drive mechanism. In this embodiment, the Y-axis guiding mechanism includes a Y-axis guide rail 2 and a Y-axis slider 3. The Y-axis guide rail 2 is fixed above the base 1 and its length is distributed along the Y direction. The Y-axis slider 3 is fixedly connected to the Z-axis module and slidably connected to the Y-axis guide rail 2. The Y-axis guiding drive mechanism adopts a lead screw pair structure, consisting of a Y-axis drive motor 4, a Y-axis lead screw 5, and a Y-axis nut 6. More specifically, the main body of the Y-axis drive motor 4 is fixedly connected inside the base 1, and its output shaft is coaxially fixedly connected to one end of the Y-axis lead screw 5. The length of the Y-axis lead screw 5 is horizontally distributed along the Y direction (i.e., the front-to-back direction). Both ends of the Y-axis lead screw 5 are rotatably connected to the base 1 through bearings. The Y-axis nut 6 is threadedly connected to the Y-axis lead screw 5 and connected to the angle adjustment module.

[0021] The Z-axis movement module consists of a Z-axis guiding mechanism and a Z-axis guiding drive mechanism. Specifically, the Z-axis guiding drive mechanism adopts a lead screw pair mechanism, including a Z-axis drive motor 12, a Z-axis lead screw 13, and a Z-axis nut 14. The main body of the Z-axis drive motor 12 is fixedly connected to the connecting frame 11, and its output shaft is fixedly connected to one end of the Z-axis lead screw 13. The length of the Z-axis lead screw 13 is distributed along the vertical Z-axis direction. Both ends of the Z-axis lead screw 13 are rotatably connected to the connecting frame 11 through a set of bearings fixedly connected to the connecting frame 11. The Z-axis nut 14 is threaded. The Z-axis guide mechanism is connected to the Z-axis lead screw 13 and includes a Z-axis guide rail 15, a Z-axis slide plate 16, and a Z-axis slider 17. The Z-axis guide rail 15 is fixedly connected to the connecting frame 11 and its length direction is distributed vertically. The Z-axis slider 17 is fixedly connected to the Z-axis slide plate 16 and slidably connected to the Z-axis guide rail 15. The front and rear ends of the Z-axis slide plate 16 are fixedly connected to the Z-axis nut 14 and the band saw, respectively. The Z-axis drive motor 12 can drive the Z-axis nut 14 to move up and down along the Z-axis lead screw 13, thereby driving the Z-axis slide plate 16 and the band saw to move up and down.

[0022] The angle adjustment module consists of a rotary connector 7, a first rotary bearing 8, and a rotary drive mechanism. The rotary drive mechanism includes a rotary drive motor 9 and a rotary drive gear 10. The rotary connector 7 is generally rectangular, with its lower end fixedly connected to the Y-axis slider 3. The lower end of the connecting frame 11 is provided with a groove. A set of first rotary bearings 8 is connected between the left and right inner sidewalls of the groove and the left and right sides of the upper end of the rotary connector 7. Specifically, the axial direction of the first rotary bearings 8 is horizontally distributed along the X-axis, and the outer ring of the first rotary bearing 8 has a toothed ring. The upper end of the slewing connector 7 is fixedly connected to the inner ring of the first slewing bearing 8. The inner walls of the left and right sides of the connecting frame 11 are fixedly connected to the outer ring of the first slewing bearing 8. The slewing drive motor 9 is fixedly connected to the left side wall of the slewing connector 7, and its output shaft is connected to the outer ring of the first slewing bearing 8 through the slewing drive gear 10. When the slewing drive motor 9 works, it can drive the outer ring of the first slewing bearing 8 to rotate around the inner ring through the slewing drive gear 10, thereby driving the connector 11 to rotate around the X direction, and thus driving the band saw to adjust the pitch angle.

[0023] In this embodiment, two sets of rotary drive motor 9 and rotary drive gear 10 are provided and symmetrically arranged on both sides of rotary connector 7 along the Z-axis. The purpose of this arrangement is that when the meshing gap between the first rotary bearing 8 and the rotary drive gear 10 is large, one set is used for positioning, and the other set is used to eliminate gear gap and brake after positioning, so as to improve the adjustment accuracy of the pitch angle of the band saw.

[0024] The band saw includes a saw frame 18, a cutting motor 24, a drive wheel 25, a driven wheel 26, a closed-loop saw blade 27, a tensioning device for adjusting the distance between the drive wheel 25 and the driven wheel 26 in the X direction, and a guiding device for guiding the closed-loop saw blade 27. The drive wheel 25 and the driven wheel 26 are rotatably connected to the left and right sides below the saw frame 18, respectively, and the closed-loop saw blade 27 is fitted around the drive wheel 25 and the driven wheel 26.

[0025] More specifically, saw frame 18, such as Figure 1 and Figure 6 As shown, the whole structure is an L-shaped plate structure. The cutting motor 24 is fixedly connected to the upper part of the saw frame 18. Its output shaft is coaxially fixedly connected to the drive wheel shaft 28. The axis of the drive wheel shaft 28 is distributed along the Z direction and its lower end is coaxially fixedly connected to the drive wheel 25. A tensioning device is connected between the driven wheel 26 and the saw frame 18.

[0026] The tensioning device comprises a tensioning guide mechanism, a tensioning guide drive mechanism, a driven wheel bearing plate 22, and a driven wheel shaft 29. The tensioning guide mechanism comprises a tensioning guide rail 19, a tensioning slider 20, and a tensioning slide plate 21. The tensioning guide drive mechanism comprises a tensioning drive motor 30, a tensioning screw 31, and a tensioning nut 32. The tensioning guide rail 19 is fixedly connected to the lower end face of the saw frame 18 and its length is horizontally distributed along the X direction. The tensioning slider 20 is fixedly connected to the upper end face of the tensioning slide plate 21 and slidably connected to the tensioning guide rail 19. The driven wheel bearing plate 22 is located below the tensioning slide plate 21, and the two are fixedly connected by a first adjusting bolt 23. The distance between the driven wheel bearing plate 22 and the tensioning slide plate 21 in the Z direction and the parallelism between the driven wheel bearing plate 22 and the driven wheel 26 can be adjusted by the first adjusting bolt 23. The axis of the driven wheel shaft 29 is distributed along the Z direction, and its upper end is connected to the driven wheel bearing plate 29. Plate 22 is fixedly connected, and its lower end is rotatably connected to driven wheel 26 via bearing. Furthermore, the tension screw 31 is horizontally distributed along the X-direction, with each end rotatably connected to the lower end face of the saw frame 18 via a set of bearings. The tension drive motor 30 is fixedly connected to the lower end face of the saw frame 18, and its output shaft is coaxially fixedly connected to one end of the tension screw 31. The tension nut 32 is threadedly connected to the tension screw 31 and fixedly connected to the tension slide plate 21. When it is necessary to adjust the relative positional relationship between the drive wheel 25 and driven wheel 26 in the X-direction to tension or relax the closed-loop saw blade 27, the tension drive motor 30 can be used to rotate the tension screw 31, thereby causing the tension nut 32 and tension slide plate 21 to slide along the length direction (i.e., the X-direction) of the tension guide rail 19, which in turn causes the driven wheel bearing plate 22 and driven wheel 26 to move back and forth, achieving the purpose of tensioning or relaxing the closed-loop saw blade 27.

[0027] In this embodiment, a set of guide devices is provided on the inner side of both the driving wheel 25 and the driven wheel 26. The guide devices can be sliding guide devices or fixed guide devices.

[0028] The sliding guide device consists of a guide arm 43 and a guide head. The guide arm 43 is distributed along the Y direction, with one end slidably connected to the saw frame 18 along the X direction, and the other end fixed to the guide head. In this embodiment, as shown... Figure 6 As shown, a slider is fixedly connected to one end of the guide arm 43. The slider is slidably connected to the tensioning guide rail 19, that is, the slider and the tensioning slider 20 share the tensioning guide rail 19. A gap is provided on the guide head for the closed-loop saw blade 27 to slide through. By setting the guide arm 43 and the guide head inside the drive wheel 25 and the driven wheel 26, the distance between the guide arm 43 on the drive side and the guide arm 43 on the driven side can be freely adjusted according to the size of the object being cut.

[0029] The fixed guide device includes a guide head. The fixed guide device located on one side of the drive wheel 25 is fixedly connected to the saw frame 18, and the fixed guide device located on one side of the driven wheel 26 is fixedly connected to the driven wheel bearing plate 22. The guide head on the driven side of the fixed guide device can adjust the distance between itself and the guide head on the drive side as the driven wheel 26 moves.

[0030] More specifically, the guide head can be a band saw guide head 44 or a special guide head. The band saw guide head 44 is a conventional guide head, which will not be described in detail in this embodiment.

[0031] And special guide heads such as Figure 2 and Figure 5 As shown, the device consists of a guide head connecting plate 33, a guide seat 34, a guide head main plate 35, an adjusting plate 37, an outer guide body 39, and an inner guide body 40. The guide head connecting plate 33, located near the drive wheel 25, is fixedly connected to the bottom of the saw frame 18. The guide head connecting plate 33 of the fixed guide device, located near the driven wheel 26, is fixedly connected to the driven wheel bearing plate 22. The guide seat 34 is fixedly connected to the bottom of the guide head connecting plate 33. Therefore, the distance between the driven side guide head and the drive side guide head in the X direction can be adjusted according to the displacement of the driven wheel 26. The guide head main plate 35 is rotatably connected to the guide seat 34. The rotation axis is horizontally distributed along the Y direction. The adjusting plate 37 is fixedly connected to the lower part of the guide head main plate 35. Both the outer guide body 39 and the inner guide body 40 are L-shaped plate structures, consisting of a horizontal plate and a vertical plate. The horizontal plate of the outer guide body 39 is fixedly connected to the lower part of the adjusting plate 37 by the second adjusting bolt 38. The distance between the adjusting plate 37 and the horizontal plate of the outer guide body 39 in the Z direction is adjusted by the second adjusting bolt 38 and the parallelism between the rear side (or inner side) of the vertical section of the outer guide body 39 and the closed-loop saw blade 27. The vertical plate of the outer guide body 39 is located on the front side of the closed-loop saw blade 27 (i.e., the front side of the closed-loop saw blade 27). Figure 2(On the right side of the image), the horizontal plate of the inner guide body 40 is fixedly connected to the lower part of the horizontal plate of the outer guide body 39 by the third adjusting bolt 41. The height of the horizontal plate of the inner guide body 40 in the Z direction and the parallelism between the front side (or outer side) of the vertical section of the inner guide body 40 and the closed-loop saw blade 27 can be adjusted by the third adjusting bolt 41. The vertical plate is located inside the closed-loop saw blade 27 (i.e., on the right side of the image). Figure 2 The left side of the outer guide 39 and the vertical plates of the inner guide 40 are provided with a certain gap in the Y direction. The closed-loop saw blade 27 can be slidably connected in the gap, so that the closed-loop saw blade 27 can be twisted in a preset direction and the closed-loop saw blade 27 can be restricted to shift forward and backward. It should be noted that in this embodiment, the lower ends of the vertical plates of the outer guide 39 and the inner guide 40 are located on the same horizontal plane. In addition, the lower end of the horizontal plate of the outer guide 39 and the upper end of the closed-loop saw blade 27 are on the same horizontal plane. A pressure block 42 is also provided between them. The upper end face of the pressure block 42 is fixed to the lower end face of the horizontal plate of the outer guide body 40, the right side face is fixed to the inner side (Z-direction rearward side) of the vertical plate, and the lower end face contacts the saw back (i.e., the upper end face) of the closed-loop saw blade 27. The position of the outer guide body 39 in the Z-direction can be adjusted by the second adjusting bolt 38, so that the pressure block 42 is pressed tightly against the upper end of the closed-loop saw blade 27. It should be noted that there is a height difference between the pressure block 42 and the upper end face of the horizontal plate of the inner guide body 40, that is, the pressure block 42D The lower end face is higher than the upper end face of the horizontal plate of the inner guide body 40. The vertical plate of the outer guide body 39 can be set as a thinner sheet so that the outer side of the closed-loop saw blade 27 can be closer to the cutting surface. Moreover, since the guide head main plate 35 can rotate left and right around the guide seat 34 with the Y axis as the axis, it can adaptively adjust its position in real time with the up and down displacement of the closed-loop saw blade 27, thereby ensuring that the pressure block 42 always fits and presses the back of the closed-loop saw blade 27 (i.e., the upper end face) with the maximum area.

[0032] In addition, this device also includes a pressure sensor 36. In a sliding guide device, the pressure sensor 36 is connected between the guide arm 43 and the guide head. The fixed end of the pressure sensor 36 is fixedly connected to the guide arm 43, and the force-bearing end is fixedly connected to the main body of the guide head 44 of the band saw. In a fixed guide device, the pressure sensor 36 is connected between the saw frame 18 and the guide head. More specifically, as shown... Figure 2 and Figure 5 As shown, in the dedicated guide head, the pressure sensor 36 is fixedly connected between the guide head main board 35 and the adjustment plate 37. The pressure sensor 36 is connected to the external controller signal. The pressure sensor 36 can detect the force data of the closed-loop saw blade 27 in real time, so the total feed speed of the closed-loop saw blade 27 can be determined based on the force data.

[0033] The greater the force on the closed-loop saw blade 27, the greater its feed speed. In this case, an external controller needs to be used to control the movement speed of the X-axis, Y-axis, and Z-axis movement modules by proportional or PID calculations to reduce the total feed speed of the closed-loop saw blade 27. This reduces the force on the closed-loop saw blade 27, ensuring that the force on the closed-loop saw blade 27 is within a certain range and preventing it from being damaged due to excessive force. This control program and algorithm are existing technologies and will not be described in detail here.

[0034] Second Embodiment This embodiment discloses another casting riser cutting machine, which has the same overall structure as the first embodiment. The difference is that the angle adjustment module is connected between the Z-axis movement module and the band saw. The rest of the structure is the same.

[0035] Specifically, such as Figure 7 and Figure 8 As shown, the angle adjustment module consists of a rotary connector 7, a first rotary bearing 8, a rotary drive motor 9, and a rotary drive gear 10. The rotary connector 7 has a concave plate structure. A set of first rotary bearings 8 is provided between the inner walls of its left and right side plates and the outer wall of the Z-axis slide plate 16. The outer ring of the first rotary bearing 8 is provided with a toothed ring. The inner ring of the first rotary bearing 8 is fixedly connected to the Z-axis slide plate 16, and the outer ring is fixedly connected to the side plate of the rotary connector 7. The body of the rotary drive motor 9 is fixedly connected to the Z-axis slide plate 16, and the rotary drive gear 10 on the output shaft is meshed with the outer ring of the first rotary bearing 8.

[0036] Third Embodiment This embodiment adds an X-axis movement module based on the second embodiment.

[0037] Specifically, such as Figure 7 and Figure 8 As shown, the X-axis movement module includes an X-axis guide mechanism and an X-axis guide drive mechanism.

[0038] The X-axis guide mechanism consists of an X-axis guide rail 45, an X-axis slider 46, and an X-axis slide plate 50. The X-axis guide rail 45 is fixedly connected to the base 1 and its length is horizontally distributed along the X-axis. The X-axis slider 46 is fixedly connected to the lower end face of the X-axis slide plate 50 and is slidably connected to the X-axis guide rail 45. The Y-axis guide rail 2 is fixedly connected to the upper end face of the X-axis slide plate 50. The Y-axis guide drive mechanism is also set on the X-axis slide plate 50.

[0039] In this embodiment, the X-axis guide drive mechanism adopts a lead screw pair drive mechanism, which consists of an X-axis drive motor 47, an X-axis lead screw 48, and an X-axis nut 49. The body of the X-axis drive motor 47 is fixedly connected to the base 1. The length of the X-axis lead screw 48 is horizontally distributed along the X-axis, and its two ends in the length direction are rotatably connected to the base 1 through bearings. The output shaft of the X-axis drive motor 47 is coaxially fixedly connected to one end of the X-axis lead screw 48. The X-axis nut 49 is threadedly connected to the X-axis lead screw 48 and fixedly connected to the X-axis slide plate 50 through a connecting block.

[0040] By adding an X-axis movement module, the band saw can be moved along the X direction (i.e., left and right), which makes it easier for the closed-loop saw blade 27 to be more accurately aligned with the workpiece being cut, thus improving cutting accuracy.

[0041] Fourth embodiment This embodiment adds a rotation module based on the third embodiment.

[0042] In this embodiment, the rotation module is connected between the Z-axis movement module and the Y-axis movement module, specifically, as follows: Figure 9 As shown, the rotating module includes a rotating connector 51, a second slewing bearing 52, and a rotating drive mechanism.

[0043] The outer ring of the second slewing bearing 52 is provided with a toothed ring. The Y-axis slider 3 is fixedly connected to the lower end of the rotary connector 51. The inner ring of the second slewing bearing 52 is fixedly connected to the upper end face of the rotary connector 51. The lower end of the connecting frame 11 of the Z-axis moving module is fixedly connected to the outer ring of the second slewing bearing 52 through a connecting plate. The rotary drive mechanism includes a rotary drive motor 53 and a rotary drive gear 54. The body of the rotary drive motor 53 is fixedly connected to the rotary connector 51. The output shaft is vertically upward and coaxially fixedly connected to the rotary drive gear 54. The rotary drive gear 54 meshes with the toothed ring of the outer ring of the second slewing bearing 52. When the rotary drive motor 53 works, it can drive the outer ring of the second slewing bearing 52 to rotate, thereby driving the Z-axis moving module and the band saw to rotate 360° along the Z-axis.

[0044] The rotation module can adjust the left and right angles between the plane of the closed-loop saw blade 27 and the cutting surface to match, and at the same time, the rotation can achieve the cutting of the parts around the base 1 in multiple directions.

[0045] Moreover, in this embodiment, two sets of rotary drive mechanisms are provided, which are symmetrically distributed along the Z-axis. The purpose of providing two sets of rotary drive gears 54 is that one set is used for positioning, and the other set is used to eliminate gear backlash after positioning and for braking.

[0046] Of course, the rotation module can also be located between the Y-axis movement module and the angle adjustment module, as shown in the first embodiment. Figure 1The lower end of the rotary connector 51 is slidably connected to the Y guide rail 2 via the Y slider 3. The inner and outer rings of the second slewing bearing 52 are fixedly connected to the rotary connector 51 and the slewing connector 7, respectively. The remaining connection relationships are the same as those described above and will not be elaborated further.

[0047] Fifth embodiment The casting riser cutting machine shown in this embodiment, based on the third embodiment, adjusts the X-axis moving module between the Z-axis moving module and the angle adjustment module, and also sets a rotation module between the X-axis module and the angle adjustment module.

[0048] Specifically, such as Figure 10 and Figure 11 The X-axis moving module, Y-axis moving module, and Z-axis moving module constitute a gantry structure. The structural composition and connection relationship of the Y-axis moving module and the Z-axis moving module are the same as those in the first embodiment, and will not be described in detail here. The X-axis guide rail 45 of the X-axis moving module is horizontally distributed along the X-direction and fixedly connected to the Z-direction slide plate 16. The X-direction slide plate 50 is slidably connected to the X-axis guide rail 45 through the X-direction slider 46. The X-direction drive motor 47 is fixedly connected to the Z-direction slide plate 16 and drives the X-direction slide plate 50 to slide along the X-axis guide rail 45 through a lead screw pair.

[0049] The rotating module includes a rotating connector 51, a second slewing bearing 52, a rotating drive motor 53, and a rotating drive gear 54. The rotating connector 51 is fixedly connected to the front of the X-axis slide plate 50 and is horizontally distributed. The outer ring of the second slewing bearing 52 is provided with a toothed ring, and the inner ring is fixedly connected to the rotating connector 51. A rotating body 55 is fixedly connected below the outer ring. The body of the rotating drive motor 53 is fixedly connected to the rotating connector 51, and its output shaft is vertically downward and coaxially fixedly connected to the rotating drive gear 54. The rotating drive gear 54 is meshed and connected to the outer ring of the second slewing bearing 52. The rotating body 55 can be driven to rotate around the Z-axis by the operation of the rotating drive motor 53.

[0050] The angle adjustment module consists of a rotary connector 7, a first rotary bearing 8, a rotary drive motor 9, and a rotary drive gear 10. The rotary connector 7 has a U-shaped plate structure. A set of first rotary bearings 8 is provided between the inner sidewalls of the left and right side plates and the left and right outer sidewalls of the rotating body 55. The outer ring of the first rotary bearing 8 is provided with a toothed ring, and the axis of the first rotary bearing 8 is horizontally distributed along the X direction. Its inner ring is fixed to the rotating body 55, and its outer ring is fixed to the inner sidewall of the side plate of the rotary connector 7. The rotary drive motor 9 is fixedly connected to the rotating body 55, and its output end is coaxially fixedly connected to the rotary drive gear 10. The rotary drive gear 10 meshes with the toothed ring of the outer ring of the first rotary bearing 8. The rotary drive motor 9 can drive the rotary connector 7 to rotate around the rotating body 55, and the rotation axis is the X-axis.

[0051] The band saw is fixedly connected to the rotary connector 7 via the saw frame 18, and the rest of the structure is the same as in the first embodiment.

[0052] In the above embodiments, the first adjusting bolt 23, the second adjusting bolt 38 and the third adjusting bolt 41 all adopt the structure shown in the patent with publication number CN213798113U. This structure belongs to the prior art, so it will not be described in detail.

[0053] In addition, the X-axis guide drive mechanism, Y-axis guide drive mechanism, Z-axis guide drive mechanism and tensioning guide drive mechanism in the above embodiments all adopt a lead screw pair mechanism, or a linear drive mechanism such as a gear rack or hydraulic cylinder. The above mechanisms are all conventional technical means in the field, so they will not be described in detail.

[0054] It should also be noted that the connection and positional relationships of the X-axis movement module, Y-axis movement module, Z-axis movement module, angle adjustment module, and rotation module can be freely combined and are not limited to the connection methods described in the above embodiments.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A casting riser cutting machine, characterized in that, include: Base; Band saw, connected to the top of the base; The moving unit, connected between the base and the band saw, includes a Y-axis moving module and a Z-axis moving module. Both modules consist of a guide mechanism and a guide drive mechanism, which are used to drive the band saw to move independently along the Y and Z directions, respectively. An angle adjustment module is configured to adjust the pitch angle of the band saw. The angle adjustment module includes a slewing connector, a first slewing bearing, and a slewing drive mechanism. One end of the slewing connector is fixedly connected to the moving unit or band saw, and the other end is fixedly connected to the inner or outer ring of the first slewing bearing. The output end of the slewing drive mechanism is connected to the outer or inner ring of the first slewing bearing via a transmission connection.

2. The casting riser cutting machine according to claim 1, characterized in that, The band saw includes a saw frame, a drive wheel, a driven wheel, a closed-loop saw blade, and a cutting motor. The drive wheel and the driven wheel are rotatably connected to both sides of the saw frame in the X direction, respectively. The closed-loop saw blade is connected between the drive wheel and the driven wheel. The cutting motor is fixedly connected to the saw frame and its output shaft is driven by the drive wheel.

3. The casting riser cutting machine according to claim 2, characterized in that, A tensioning device is connected between the driven wheel and the saw frame. The tensioning device includes a tensioning slide plate, a driven wheel support plate, and a tensioning guide drive mechanism. The tensioning slide plate is slidably connected to the saw frame along the X direction. The driven wheel is rotatably connected to the driven wheel support plate, and the driven wheel support plate and the tensioning slide plate are detachably and fixedly connected. The driven wheel is rotatably connected to the driven wheel support plate along the Z direction. The tensioning guide drive mechanism is installed on the saw frame, and its output end is fixedly connected to the tensioning slide plate.

4. The casting riser cutting machine according to claim 3, characterized in that, A sliding guide device is connected between the saw frame and the closed-loop saw blade on the inner side of both the driving wheel and the driven wheel. The sliding guide device consists of a guide arm and a guide head. The guide arm is distributed along the Y direction in the length direction, with one end slidingly connected to the saw frame along the X direction and the other end fixed to the guide head.

5. The casting riser cutting machine according to claim 3, characterized in that, A fixed guide device is connected between the saw frame and the closed-loop saw blade on the inner side of both the drive wheel and the driven wheel. The fixed guide device includes a guide head, and the guide head on the inner side of the drive wheel is fixedly connected to the saw frame, while the guide head on the inner side of the driven wheel is fixedly connected to the driven wheel bearing plate.

6. The casting riser cutting machine according to claim 4 or 5, characterized in that, The guide head includes a guide head connecting plate, a guide seat, a guide head main plate, an adjusting plate, an outer guide body, an inner guide body, and a pressure block. The guide seat is fixedly connected to the saw frame via the guide head connecting plate. The guide head main plate is rotatably connected to the guide seat along the Y direction. The adjusting plate is fixedly connected below the guide head main plate. The outer guide body is adjustablely fixedly connected below the adjusting plate along the Z direction. The inner guide body is adjustablely fixedly connected below the outer guide body along the Z direction. The outer and inner guide bodies are located on both sides of the closed-loop saw blade along the Y direction, and a gap is provided between them in the Y direction for guiding the sliding of the closed-loop saw blade. The pressure block is connected between the lower end face of the outer guide body and the upper end face of the closed-loop saw blade.

7. The casting riser cutting machine according to claim 4 or 5, characterized in that, A pressure sensor is installed between the guide head and the saw frame to detect the pressure of the guide head on the closed-loop saw blade in the Z direction.

8. The casting riser cutting machine according to claim 1, characterized in that, It also includes an X-axis moving module for driving the band saw to move along the X direction, the X-axis moving module consisting of an X-axis guiding mechanism and an X-axis guiding transmission mechanism.

9. The casting riser cutting machine according to claim 1, characterized in that, It also includes a rotating module for driving the band saw to rotate, the rotation axis of the rotating module being distributed along the Z direction.

10. The casting riser cutting machine according to claim 9, characterized in that, The rotating module includes a rotating connector, a second slewing bearing, and a rotating drive mechanism. The rotating connector is fixedly connected to the inner or outer ring of the second slewing bearing, and the output end of the rotating drive mechanism is drivenly connected to the outer or inner ring of the second slewing bearing.

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