A cutting device for aluminum alloy castings

Abstract

This invention relates to the field of die casting gate cutting technology, specifically an aluminum alloy casting edge cutting device; it includes a machine body and a processing table; a machine door is installed on one side of the machine body and the processing table; the processing table is installed below the machine body; a stepper motor is installed inside the processing table; a drive wheel is installed inside the processing table; a mounting base is installed inside the machine body; a driven wheel is arranged directly above the drive wheel; this invention uses two sets of independent saw blades, enabling the two sets of saw blades to cut the gate of a double-outlet aluminum alloy casting in one go. Compared with the traditional process of performing two independent clamping and two sawing operations on a double-outlet aluminum alloy casting, this invention not only reduces the time loss caused by repeated positioning and clamping of the double-outlet casting, but also shortens the gate cutting time, improves the efficiency of gate cutting processing of aluminum alloy castings, and thus improves the processing efficiency of aluminum alloy castings.

Description

Technical Field

[0001] This invention relates to the field of die casting gate cutting technology, specifically to an aluminum alloy casting edge cutting device. Background Technology

[0002] Aluminum alloy die castings are core industrial parts formed by injecting molten aluminum alloy into a mold and cooling it through high pressure casting process. With their excellent properties such as lightweight, high strength and corrosion resistance, they have become key basic components in high-end manufacturing fields such as automotive structural parts, aerospace devices and electronic communication housings. In the entire production process of aluminum alloy die castings, gate removal is the core step of the post-processing. Traditional processes generally use a sawing machine to complete gate separation. To increase die casting capacity, existing aluminum alloy die casting equipment often adopts a multi-cavity mold structure. By injecting molten aluminum alloy into two or more cavities simultaneously, it can achieve efficient production with one mold producing two or even four cavities. The cavities of this type of mold are symmetrically distributed on both sides of the main runner gate. After forming, the casting has an integral structure with the gate in the center and multiple parts on both sides.

[0003] For this type of one-piece aluminum alloy die casting, the current cutting method of the saw is: first, clamp the casting on one side of the gate to complete the local cutting, and then reposition and clamp the casting on the other side for secondary cutting, so as to finally achieve complete separation of all castings from the gate. However, the two independent positioning and clamping processes will take up a lot of processing time, which directly leads to a reduction in the gate removal efficiency of aluminum alloy castings, and thus affects the production efficiency of aluminum alloy castings. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes an aluminum alloy casting edge trimming device. By installing two sets of independent saw blades, this invention enables the two sets of saw blades to remove the gate of a double-outlet aluminum alloy casting in one go. Compared with the traditional process of performing two independent clamping and two sawing operations on a double-outlet aluminum alloy casting, this not only reduces the time loss caused by repeated positioning and clamping of the casting, but also shortens the gate removal time, improves the efficiency of gate removal processing of aluminum alloy castings, and thus improves the processing and production efficiency of aluminum alloy castings.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: An aluminum alloy casting edge trimming device according to this invention includes a machine body and a processing table; a door is installed on one side of the machine body and the processing table; the processing table is installed below the machine body; a stepper motor is installed inside the processing table; a drive wheel is installed inside the processing table; a mounting base is installed inside the machine body; a driven wheel is arranged directly above the drive wheel; the driven wheel is rotatably connected to the mounting base; the stepper motor is used to drive the drive wheel to rotate; a screw is rotatably installed at the lower end of the mounting base; the screw is helically connected to the machine body. A connecting frame is installed on the side of the drive wheel near the machine door; a connecting cavity is opened inside the machine body; the connecting frame is installed inside the connecting cavity; a drive wheel and a follower wheel are installed on the side of the connecting frame away from the drive wheel; the drive wheel and the drive wheel are connected by a transmission shaft; the drive wheel drives the drive wheel to rotate through the transmission shaft; a guide wheel assembly is rotatably installed on the side of the connecting frame near the follower wheel; the guide wheel assembly includes a first guide wheel and a second guide wheel; a positioning wheel is installed inside the processing table; A tightening assembly is installed on one side of the connecting frame; the tightening assembly is used to tighten the saw blade at the follower wheel; A clamping assembly is installed on the upper end of the processing table; the clamping assembly is used to clamp the aluminum alloy casting. It also includes a first saw blade and a second saw blade, with the first saw blade fitted onto the drive wheel and the driven wheel, and the second saw blade fitted onto the drive wheel and the follower wheel.

[0006] Preferably, a lead screw is rotatably connected inside the connecting cavity; the lead screw is helically connected to the connecting frame; a servo motor is installed on one side of the machine body; the servo motor is used to drive the connecting frame to slide inside the connecting cavity.

[0007] Preferably, the tightening assembly includes a hinge plate, and the first guide wheel and the second guide wheel are rotatably mounted on the side of the hinge plate near the connecting frame; a worm gear is rotatably mounted inside the connecting frame; the worm gear is fixedly connected to the hinge plate; a worm is provided on one side of the worm gear; the worm meshes with the worm gear; and the worm and the lead screw are connected by a transmission assembly.

[0008] Preferably, the transmission assembly includes a guide rod; a first bevel gear ring is sleeved on the surface of the guide rod, and a second bevel gear ring meshing with the first bevel gear ring is fixedly connected to the surface of the lead screw; the first bevel gear ring is connected to the cavity wall of the connecting cavity via a transmission spring; an electromagnetic ring is embedded in the cavity wall of the connecting cavity; a third bevel gear ring is rotatably installed inside the connecting frame; the third bevel gear ring is slidably connected to the guide rod; a bevel gear shaft is rotatably installed inside the connecting frame; the bevel gear shaft meshes with the third bevel gear ring; the bevel gear shaft and the worm gear are connected by a toothed belt for belt drive; a correction unit is provided between the second guide wheel and the positioning wheel; the correction unit is used to drive the driven wheel and the positioning wheel to move synchronously.

[0009] Preferably, the correction unit includes a correction rod; the surface of the correction rod has a groove; a connecting rod is slidably connected in the groove; the connecting rod is connected to the end of the hinge plate away from the connecting frame; the end of the correction rod away from the hinge plate is rotatably connected to the positioning wheel.

[0010] Preferably, the hinge plate has a rectangular groove at the end away from the connecting frame; a connecting plate is slidably and sealingly connected within the rectangular groove; the connecting rod is connected to the end of the connecting plate away from the hinge plate; the first guide wheel is rotatably connected to the hinge plate; the second guide wheel is rotatably connected to the end of the connecting plate away from the hinge plate; a groove is formed on the side of the connecting plate away from the follower wheel; a rack is fixedly connected to the inner wall of the groove; a connecting gear that meshes with the rack is provided in the groove; the connecting gear is rotatably connected to the hinge plate via a rotating rod; a locking ring is sleeved on the surface of the rotating rod; the locking ring is threadedly connected to the rotating rod.

[0011] Preferably, a rotating roller is rotatably connected to the surface of the first guide wheel; the rotating roller is configured as a frustum cone; the larger end of the rotating roller is close to the hinge plate.

[0012] Preferably, the lower end face of the correcting rod is provided with a pressing groove; a pressing block is slidably connected in the pressing groove; a cam is rotatably connected in the pressing groove; a pressure rod is rotatably connected to the side wall of the correcting rod; and the pressure rod is fixedly connected to the cam.

[0013] Preferably, the clamping assembly includes a support plate; a U-shaped plate is slidably connected to the upper end of the support plate; there are two U-shaped plates; the two U-shaped plates are connected by a lead screw and helical transmission; a sliding plate is slidably connected to the upper end of the U-shaped plate; a pressure plate is hinged to the upper end of the sliding plate; a pneumatic push rod is provided on one side of the pressure plate; the pneumatic push rod is hinged to the pressure plate.

[0014] Preferably, a dust baffle is snapped onto the upper end of the support plate; a corrugated plate is fixedly connected to the side of the dust baffle away from the machine body.

[0015] The beneficial effects of this invention are as follows: 1. This invention, by installing two independent saw blades, enables the two saw blades to remove the gate of a double-outlet aluminum alloy casting in one go. Compared with the traditional process of clamping and sawing the double-outlet aluminum alloy casting twice, this not only reduces the time loss caused by repeated positioning and clamping of the casting, but also shortens the gate removal time, improves the efficiency of gate removal processing of aluminum alloy casting, and thus improves the processing efficiency of aluminum alloy casting.

[0016] 2. This invention, by distributing two sets of saw blades one in front of the other, allows the two sets of saw blades to cut into the gate connection points on both sides of the casting sequentially. That is, the first set of saw blades cuts into one side of the connection point first, and then the second set of saw blades cuts into the gate connection point on the other side of the casting. This effectively disperses the cutting load and avoids the superimposed instantaneous impact force generated when the two saw blades cut in simultaneously from interfering with the saw blade's cutting stability and the quality of the casting gate removal. In addition, the front and rear distribution of the two sets of saw blades allows the chips from the front saw blade to be discharged in time without interfering with the chips from the rear saw blade, thus improving the chip removal effect.

[0017] 3. This invention controls the rotation of the lead screw driven by the servo motor, causing the lead screw to drive the connecting frame to slide within the connecting cavity. This causes the connecting frame to move the follower wheel and the drive wheel along the connecting cavity towards the drive wheel, reducing the front-to-back distance between the two sets of saw blades. This allows the two sets of saw blades to cut aluminum alloy castings with thin gates approximately synchronously. This not only effectively shortens the cutting time, but also prevents the gate connection on the other side of the casting from bending due to the thin gate thickness after the gate on one side is cut off. This avoids the gate cut surface on the other side of the casting from tilting during the sawing process, thereby improving the sawing quality of thin gate castings.

[0018] 4. This invention, by setting a hinge plate, allows the servo motor to drive the hinge plate to rotate via a worm gear and worm wheel, which in turn moves the second guide wheel. This allows the second guide wheel to adjust the left and right spacing of the two sets of saw blade cutting segments. When cutting castings with large-spacing gates, the distance between the two sets of saw blade cutting segments is increased simultaneously, ensuring that the saw blade edge is always aligned with the optimal cutting position at the root of the gate. This avoids gate residue or overcutting defects from the source and effectively improves the sawing quality of aluminum alloy casting gates.

[0019] 5. By setting up a rotating roller, the present invention generates an inclined rolling extrusion force on the saw blade during operation. The component of this inclined rolling extrusion force points towards the flange of the follower wheel, so that the saw blade always adheres to the positioning flange on the surface of the follower wheel under the guidance of the inclined rolling extrusion force. This completely avoids the problem of saw blade deviation and detachment during high-speed operation or load fluctuation, thereby improving the sawing effect of the saw blade on the casting gate. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the internal structure of the machine body in this invention; Figure 4 yes Figure 3 Enlarged view of point B in the middle; Figure 5 This is a partial sectional view of the body in this invention; Figure 6 yes Figure 5 Enlarged view of point C in the middle; Figure 7 This is a schematic diagram of the connecting frame in this invention; Figure 8 This is a partial cross-sectional view of the hinge plate in this invention; Figure 9 yes Figure 8 Enlarged view of point D in the middle.

[0022] In the diagram: Machine body 1, machining table 11, stepper motor 111, drive wheel 112, drive wheel 113, transmission shaft 114, positioning wheel 115, mounting base 12, driven wheel 121, screw 122, support plate 13, U-shaped plate 14, sliding plate 141, pressure plate 15, pneumatic push rod 16, dust baffle 17, corrugated plate 18, lead screw 19, connecting frame 2, connecting cavity 21, follower wheel 22, guide wheel 1 221, guide wheel 222, lead screw 23, servo motor 2 31. No. 2 bevel gear ring 232. Smooth rod 24. No. 1 bevel gear ring 241. Transmission spring 242. Electromagnetic ring 243. No. 3 bevel gear ring 25. Bevel gear shaft 26. Rotating roller 27. Hinge plate 3. Worm gear 31. Worm 32. Rectangular groove 33. Connecting plate 34. Groove 341. Rack 342. Connecting gear 35. Rotating rod 36. Locking ring 361. Correcting rod 4. Slide groove 41. Connecting rod 42. Pressing groove 43. Pressing block 44. Cam 45. Pressure rod 46. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 9 As shown, the present invention includes the following embodiments: Example 1: An aluminum alloy casting edge trimming device includes a body 1 and a processing table 11; a door is installed on one side of the body 1 and the processing table 11; the processing table 11 is installed below the body 1; a stepper motor 111 is installed inside the processing table 11; a drive wheel 112 is installed inside the processing table 11; a mounting base 12 is installed inside the body 1; a driven wheel 121 is arranged directly above the drive wheel 112; the driven wheel 121 is rotatably connected to the mounting base 12; the stepper motor 111 is used to drive the drive wheel 112 to rotate; a screw 122 is rotatably installed at the lower end of the mounting base 12; the screw 122 is helically connected to the body 1. A connecting frame 2 is installed on the side of the drive wheel 112 near the machine door; a connecting cavity 21 is provided inside the machine body 1; the connecting frame 2 is installed in the connecting cavity 21; a drive wheel 113 and a follower wheel 22 are installed on the side of the connecting frame 2 away from the drive wheel 112; the drive wheel 113 and the drive wheel 112 are connected by a transmission shaft 114; the drive wheel 112 drives the drive wheel 113 to rotate through the transmission shaft 114; a guide wheel assembly is rotatably installed on the side of the connecting frame 2 near the follower wheel 22; the guide wheel assembly includes a first guide wheel 221 and a second guide wheel 222; a positioning wheel 115 is installed inside the processing table 11; A tightening assembly is installed on one side of the connecting frame 2; the tightening assembly is used to tighten the saw blade at the follower wheel 22; A clamping assembly is installed on the upper end of the processing table 11; the clamping assembly is used to clamp the aluminum alloy casting. Before cutting the gate of a double-outlet aluminum alloy casting, the casting on both sides of the gate is first positioned and clamped using a clamping assembly, ensuring that the connection between the gate and the casting is perfectly aligned with the cutting paths of the two sets of saw blades. Since the output of the stepper motor 111 is connected to the drive shaft 114 via a toothed belt, when the control system drives the stepper motor 111, the stepper motor 111 drives the drive shaft 114 to rotate synchronously via the toothed belt. Because the drive shaft 114 is bolted to the drive wheel 112, and the drive wheel 113 slides against the drive shaft 114 on one side, the other... One side is rotatably connected to the connecting frame 2, so when the stepper motor 111 is running, the stepper motor 111 synchronously drives the drive wheel 112 and the drive wheel 113 to rotate; since the surfaces of the drive wheel 112 and the drive wheel 113 are fitted with two independent saw blades, for example, the first saw blade (i.e., the first saw blade) is fitted on the outer surface of the drive wheel 112 and the driven wheel 121, and the second saw blade (i.e., the second saw blade) is fitted on the outer surface of the drive wheel 113 and the follower wheel 22, since the tightening component tightens the saw blade at the follower wheel 22, that is, when the tightening component works, it tightens the second saw blade (i.e., the second saw blade); Before the stepper motor 111 drives the two sets of independent saw blades through the drive wheel 112 and the drive wheel 113, the tension of the two sets of independent saw blades needs to be adjusted. The tension adjustment of the saw blades on the drive wheel 112 and the driven wheel 121 is achieved by rotating the screw 122. Since the screw 122 is threadedly connected to the machine body 1, when the screw 122 is spirally fed along the axis during rotation, the screw 122 will push the mounting seat 12 connected to its upper end to rise. Because the mounting seat 12 is slidably connected to the machine body 1, the rising mounting seat 12 will move upward, causing the mounting seat 12 to drive the driven wheel 121 to rise synchronously, thereby increasing the center distance between the drive wheel 112 and the driven wheel 121 and achieving the tension of the saw blade. At this time, when the stepper motor 111 drives the drive wheel 112 to rotate through the transmission shaft 114, the drive wheel 112 drives the saw blade to circulate between the drive wheel 112 and the driven wheel 121 through friction. The tension of the saw blade on the drive wheel 113 and follower wheel 22 is adjusted by a tightening assembly. Since a first guide wheel 221, a second guide wheel 222, and a positioning wheel 115 are provided between the drive wheel 113 and the follower wheel 22, these three components together constitute the saw blade's guiding and limiting mechanism. When the saw blade, wrapped around the follower wheel 22, moves downwards from top to bottom, it first contacts the first guide wheel. The outer edge of 221 turns towards the second guide wheel 222 along the wheel surface of the first guide wheel 221, and then bends downward along the arc-shaped outer edge of the second guide wheel 222 to the positioning wheel 115, so that the saw blade side of the lower positioning wheel 115 provides support and limit, so that the saw blade between the second guide wheel 222 and the positioning wheel 115 always remains perpendicular. Therefore, when the drive wheel 113 rotates with the transmission shaft 114, the transmission shaft 114 will drive the saw blade on the drive wheel 113 to perform cyclical motion along the preset path. After the stepper motor 111 drives the two sets of saw blades into working state, the operator pushes the clamping assembly to move towards the saw blades, so that the two sets of vertically arranged saw blades can simultaneously contact the connection part of the two gates of the double-outlet casting, so that the two saw blades can complete the synchronous cutting operation of the two gates at one time. This invention, by installing two independent saw blades, enables the two saw blades to cut off the gate of a double-outlet aluminum alloy casting in one go. Compared with the traditional process of clamping and sawing the double-outlet aluminum alloy casting twice, this not only reduces the time loss caused by repeated positioning and clamping of the double-outlet casting, but also shortens the gate cutting time, improves the efficiency of gate cutting of aluminum alloy casting, and thus improves the processing efficiency of aluminum alloy casting. Since the drive wheel 113 and the active wheel 112 on the drive shaft 114 are distributed front and back, the saw blades on the drive wheel 113 and the active wheel 112 are also distributed front and back. The saw blade on the drive wheel 113 is in front and the saw blade on the active wheel 112 is in the back. So when the clamping assembly drives the double-outlet aluminum alloy casting close to the two sets of saw blades, the double-outlet aluminum alloy casting first contacts the saw blade installed on the drive wheel 113, so that the stepper motor 111 first drives the saw blade through the drive wheel 113 to cut the gate connection part on one side of the double-outlet aluminum alloy casting. Then, the saw blade on the active wheel 112 contacts the gate connection part of the double-outlet aluminum alloy casting and cuts it. If dual saw blades are used for synchronous cutting on the same plane, the two sets of saw blades will contact the gate of the casting at the same time. The instantaneous cutting impact force generated by the two sets of saw blades will be superimposed. The superimposed instantaneous cutting impact force is very likely to cause violent fluctuations in the tension of the saw blade. This can easily lead to saw blade vibration and tilting of the cut surface, as well as saw blade tooth breakage, blade breakage, excessive sawing of the casting gate, and even casting deformation and scrapping. This invention utilizes a staggered arrangement of two sets of saw blades, one in front of the other, to allow them to sequentially cut into the gate connection points on both sides of the casting. Specifically, the first set of saw blades cuts into one connection point first, while the second set cuts into the gate connection point on the other side of the casting. This effectively disperses the cutting load and prevents the superimposed instantaneous impact force generated when both saw blades cut simultaneously from interfering with the saw blade's cutting stability and the quality of the casting gate removal. Furthermore, the staggered arrangement of the two sets of saw blades ensures that chips from the front saw blade can be discharged promptly without interfering with chips from the rear saw blade, thus improving chip removal efficiency.

[0025] Example 2: A lead screw 23 is rotatably connected inside the connecting cavity 21; the lead screw 23 is screw-driven to the connecting frame 2; a servo motor 231 is installed on one side of the machine body 1; the servo motor 231 is used to drive the connecting frame 2 to slide within the connecting cavity 21; Since the gate thickness varies among different aluminum alloy castings, the instantaneous impact of the saw blade contacting the thin-gate casting is smaller, resulting in fewer metal chips. By controlling the servo motor 231 to drive the lead screw 23 to rotate, the lead screw 23 drives the connecting frame 2 to slide within the connecting cavity 21. This causes the connecting frame 2 to move the follower wheel 22 and the drive wheel 113 along the connecting cavity 21 towards the drive wheel 112, reducing the front-to-back distance between the two sets of saw blades. This shortens the interval between the two sets of saw blades cutting the thin-gate aluminum alloy casting, effectively reducing the cutting time. Furthermore, after the gate on one side of the casting is cut off, the gate connection on the other side will bend due to the thin gate thickness, preventing the gate cut surface on the other side of the casting from tilting during sawing, thereby improving the sawing quality of the thin-gate casting.

[0026] Example 3: The tightening assembly includes a hinge plate 3, with the first guide wheel 221 and the second guide wheel 222 rotatably mounted on the side of the hinge plate 3 near the connecting frame 2; a worm gear 31 is rotatably mounted inside the connecting frame 2; the worm gear 31 is fixedly connected to the hinge plate 3; a worm 32 is provided on one side of the worm gear 31; the worm 32 meshes with the worm gear 31; the worm 32 is connected to the lead screw 23 through a transmission assembly.

[0027] In this embodiment, the transmission assembly includes a guide rod 24; a first bevel gear ring 241 is sleeved on the surface of the guide rod 24, and a second bevel gear ring 232 that meshes with the first bevel gear ring 241 is fixedly connected to the surface of the lead screw 23; the first bevel gear ring 241 is connected to the cavity wall of the connecting cavity 21 through a transmission spring 242; an electromagnetic ring 243 is embedded in the cavity wall of the connecting cavity 21; a third bevel gear ring 25 is rotatably installed inside the connecting frame 2; the third bevel gear ring 25 is slidably connected to the guide rod 24; a bevel gear shaft 26 is rotatably installed inside the connecting frame 2; the bevel gear shaft 26 meshes with the third bevel gear ring 25; the bevel gear shaft 26 and the worm gear 32 are connected by a toothed belt for belt drive; a correction unit is provided between the second guide wheel 222 and the positioning wheel 115; the correction unit is used to drive the driven wheel 121 and the positioning wheel 115 to move synchronously.

[0028] In this embodiment, the correction unit includes a correction rod 4; a groove 41 is provided on the surface of the correction rod 4; a connecting rod 42 is slidably connected in the groove 41; the connecting rod 42 is connected to the end of the hinge plate 3 away from the connecting frame 2; the end of the correction rod 4 away from the hinge plate 3 is rotatably connected to the positioning wheel 115.

[0029] Different aluminum alloy castings have different dimensions, and their mold designs vary, resulting in different cavity spacing for castings with double or multiple outlets. This leads to different distances between the gate connection ends on both sides of the aluminum alloy casting, which is necessary to adapt to the gate sawing requirements of castings of different sizes. This invention sets up a hinge plate 3, which allows the servo motor 231 to drive the hinge plate 3 to rotate via the worm gear 32 and worm wheel 31. This causes the hinge plate 3 to move the second guide wheel 222, enabling the second guide wheel 222 to adjust the left and right spacing of the two sets of saw blade cutting segments. When cutting castings with large-spacing gates, the distance between the two sets of saw blade cutting segments is increased simultaneously, ensuring that the saw blade edge is always aligned with the optimal cutting position at the root of the gate. This avoids gate residue or overcutting defects from the source and effectively improves the sawing quality of aluminum alloy casting gates. Before adjusting the front and rear distance of the two sets of saw blades, the user first controls the electromagnetic ring 243 to be energized, so that the electromagnetic ring 243 can generate a magnetic attraction force on the first bevel gear ring 241, causing the first bevel gear ring 241 to squeeze the transmission spring 242 under the magnetic attraction and move towards the second bevel gear ring 232 until the first bevel gear ring 241 and the second bevel gear ring 232 mesh. The servo motor 231 is started to drive the lead screw 23 to rotate, which in turn drives the lead screw 23 to rotate through the second bevel gear ring 232. The first bevel gear ring 241 can drive the guide rod 24 to rotate. Since the surface of the guide rod 24 is slidably connected to the third bevel gear ring 25, the third bevel gear ring 25 can drive the bevel gear shaft 26 meshing with it to rotate. The bevel gear shaft 26 can drive the worm 32 to rotate through the toothed belt. The worm 32 drives the worm wheel 31 to rotate. The worm wheel 31 drives the hinge plate 3 to rotate. The hinge plate 3 drives the first guide wheel 221 and the second guide wheel 222 to deflect and adjust around the center of the follower wheel 22. If it is necessary to increase the distance between the two sets of saw blade cutting segments, it is necessary to control the hinge plate 3 to deflect downwards, so that the hinge plate 3 drives the first guide wheel 221 and the second guide wheel 222 to push the saw blade towards the machine body 1, so that the second guide wheel 222 pushes the saw blade towards the machine body 1, so that the saw blade cutting segment on the drive wheel 113 side moves away from the saw blade cutting segment on the drive wheel 112 side, thereby linearly increasing the distance between the two sets of saw blades, so that the two sets of saw blade cutting segments can effectively cut the gate of aluminum alloy castings with large distance between the gate connection ends on both sides, thus effectively improving the practical application range of the present invention; Due to the matching design of the gap between the first guide wheel 221 and the follower wheel 22 (the gap value is equal to the thickness of the saw blade), the first guide wheel 221 forms a rolling contact with the follower wheel 22 through the saw blade. When it is necessary to tighten the saw blade, it is only necessary to control the servo motor 231 to drive the worm 32 and the worm wheel 31 to rotate, so that the worm wheel 31 drives the hinge plate 3 to deflect downward, so that the hinge plate 3 drives the first guide wheel 221 to make a circular feed motion around the center of the follower wheel 22, so that the first guide wheel 221 pushes the saw blade to extend along the surface of the follower wheel 22, increasing the contact wrap angle between the saw blade and the follower wheel 22, increasing the length of the saw blade attached to the surface of the follower wheel 22, thereby improving the tension of the saw blade on the surface of the follower wheel 22. During the rotation of the hinge plate 3, the hinge plate 3 will drive the second guide wheel 222 to move towards the machine body 1. At this time, the second guide wheel 222 will drive the connecting rod 42 to move synchronously, so that the connecting rod 42 pushes the straightening rod 4 to move closer to the machine body 1 through the groove wall of the slide 41. Because the positioning wheel 115 is rotatably connected to the straightening rod 4, the straightening rod 4 will drive the positioning wheel 115, which is rotatably connected to the straightening rod 4, to move synchronously. The displacement of the second guide wheel 222 and the positioning wheel 115 is exactly equal, so that the saw segment between the two always maintains parallel displacement, ensuring that the saw blade cutting segment is permanently in a vertical state. This eliminates defects such as tilting and skewing of the casting gate cutting surface from the mechanical structure level, and greatly improves the gate cutting surface quality of aluminum alloy castings. As the positioning wheel 115 moves toward the machine body 1, it can simultaneously push the saw blade on the drive wheel 113 side toward the wheel surface, increasing the contact wrap angle between the saw blade and the drive wheel 113. This increases the length of the saw blade adhering to the surface of the drive wheel 113, simultaneously increasing the tension of the saw blade's cutting section between the second guide wheel 222 and the positioning wheel 115. The friction between the drive wheel 113 and the saw blade increases, completely avoiding the slippage problem of the saw blade at high speed, ensuring the stability of the saw blade's feed speed, and further improving the continuous cutting effect on thick gates of castings.

[0030] Example 4: A rectangular groove 33 is provided at the end of the hinge plate 3 away from the connecting frame 2; a connecting plate 34 is slidably and sealingly connected within the rectangular groove 33; a connecting rod 42 is connected to the end of the connecting plate 34 away from the hinge plate 3; the first guide wheel 221 is rotatably connected to the hinge plate 3; the second guide wheel 222 is rotatably connected to the end of the connecting plate 34 away from the hinge plate 3; a groove 341 is provided on the side of the connecting plate 34 away from the follower wheel 22; a rack 342 is fixedly connected to the inner wall of the groove 341; a connecting gear 35 that meshes with the rack 342 is provided within the groove 341; the connecting gear 35 is rotatably connected to the hinge plate 3 via a rotating rod 36; a locking ring 361 is sleeved on the surface of the rotating rod 36; the locking ring 361 is threadedly connected to the rotating rod 36.

[0031] In this embodiment, a rotating roller 27 is rotatably connected to the surface of the first guide wheel 221; the rotating roller 27 is configured as a frustum; the larger end of the rotating roller 27 is close to the hinge plate 3.

[0032] In this embodiment, the lower end face of the corrective rod 4 is provided with a pressing groove 43; a pressing block 44 is slidably connected in the pressing groove 43; a cam 45 is rotatably connected in the pressing groove 43; a pressure rod 46 is rotatably connected to the side wall of the corrective rod 4; the pressure rod 46 is fixedly connected to the cam 45. The user first drives the worm gear 31 through the servo motor 231 to rotate the hinge plate 3, so that the hinge plate 3 adjusts the distance between the two sets of saw blade cutting segments through the second guide wheel 222. After the distance between the two sets of saw blade cutting segments is adjusted, it is necessary to fix the distance between the two sets of saw blade cutting segments. For this purpose, the user needs to first rotate the pressure rod 46 to drive the cam 45 to deflect, so that the deflected cam 45 pushes the clamping block 44 in the clamping groove 43 to slide down along the clamping groove 43, extend out of the clamping groove 43 and press against the bottom of the machine body 1. The clamping block 44 is made of rubber material, so that the clamping block 44 locks the straightening rod 4 completely in the current position through the static friction force of contacting the machine body 1. Thus, the straightening rod 4 limits the connecting rod 42, hinge plate 3 and second guide wheel 222 linked with it, so that the connecting rod 42, hinge plate 3 and second guide wheel 222 cannot be displaced, ensuring that the saw blade cutting segment is permanently fixed in the preset position, completely preventing the distance between the two sets of saw blades from shifting due to vibration during the subsequent casting gate cutting process. When sawing castings with extremely small pitch gates, the travel of the hinge plate 3 is insufficient to support the two sets of saw blades to move closer together. To address this, a rotating rod 36 is provided. Rotating the rotating rod 36 causes the connecting gear 35 to rotate, which in turn pushes the connecting plate 34 out of the groove 341 through the meshing rack 342. This causes the connecting plate 34 to move the second guide wheel 222 synchronously, increasing the distance between the second guide wheel 222 and the first guide wheel 221. This increases the initial distance between the first guide wheel 221 and the second guide wheel 222, thereby expanding the effective travel range of the hinge plate 3 when it deflects. This increases the minimum adjustable distance between the cutting sections of the two sets of saw blades, ensuring that the two sets of saw blades can saw the gates of aluminum alloy castings with even smaller pitches, thus improving the practicality of the invention. By setting the rotating roller 27, during operation, the rotating roller 27 generates an inclined rolling extrusion force on the saw blade. The component of this inclined rolling extrusion force points towards the flange of the follower wheel 22, so that the saw blade always adheres to the positioning flange on the surface of the follower wheel 22 under the guidance of the inclined rolling extrusion force. This completely avoids the problem of the saw blade running off course or falling off when operating at high speed or under fluctuating load, thereby improving the sawing effect of the saw blade on the casting gate.

[0033] Example 5: The clamping assembly includes a support plate 13; a U-shaped plate 14 is slidably connected to the upper end of the support plate 13; two U-shaped plates 14 are provided; the two U-shaped plates 14 are connected by a screw 19 for helical transmission; a sliding plate 141 is slidably connected to the upper end of the U-shaped plate 14; a pressure plate 15 is hinged to the upper end of the sliding plate 141; a pneumatic push rod 16 is provided on one side of the pressure plate 15; the pneumatic push rod 16 is hinged to the pressure plate 15.

[0034] In this embodiment, a dust baffle 17 is snapped onto the upper end of the support plate 13; a corrugated plate 18 is fixedly connected to the side of the dust baffle 17 away from the machine body 1.

[0035] The U-shaped plate 14, which is away from the machine body 1, is fixedly connected to the support plate 13 by screws. When the double-outlet aluminum alloy casting is placed on the two slide plates 141, the lead screw 19 is rotated so that the lead screw 19 can drive the U-shaped plate 14, which is close to the machine body 1, to move away from the machine body 1, so that the two U-shaped plates 14 are close to each other and clamp the double-outlet aluminum alloy casting. Then, the pneumatic push rod 16 is controlled to push the pressure plate 15 to flip towards the slide plate 141, so that the pressure plate 15 presses the double-outlet aluminum alloy casting on the slide plate 141, so that the double-outlet aluminum alloy casting is clamped and fixed on one side of the two saw blades, and the saw blades are directly opposite the gate connection part of the double-outlet aluminum alloy casting. The slide plate 141 is pushed to slide along the U-shaped plate 14 so that the saw blades can cut the gate connection part of the casting. Since both the processing table 11 and the support plate 13 have working openings at their upper ends, the saw blade can move within the working openings without interference during saw blade adjustment. By setting up a dust baffle 17, which works in conjunction with the corrugated plate 18 to block the working openings, the sawed aluminum alloy chips can fall onto the dust baffle 17 and the corrugated plate 18, thus preventing the sawed aluminum alloy chips from falling into the processing table 11. This reduces the difficulty of cleaning the sawed aluminum alloy chips and prevents them from falling into the processing table 11. On the drive wheel 112 and drive wheel 113, to prevent sawing aluminum alloy chips from causing wear on the saw blade and to improve the service life of the saw blade, a corrugated plate 18 is located between the two sets of saw blades. The corrugated plate 18 is made of PTFE material, which gives the corrugated plate 18 good elasticity. Under its own elastic extension, the corrugated plate 18 can contact the side wall of the saw blade away from the machine body 1, so that the corrugated plate 18 can collect the aluminum alloy chips generated by the gates cut by the two saw blades, further reducing the difficulty of collecting sawing aluminum alloy chips.

[0036] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance. In the description of the present invention, fixed connection refers to fixed connection.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy casting edge trimming device, comprising a machine body and a processing table; a door is installed on one side of the machine body and the processing table; the processing table is installed below the machine body; a stepper motor is installed inside the processing table; a drive wheel is installed inside the processing table; a mounting base is installed inside the machine body; a driven wheel is disposed directly above the drive wheel; the driven wheel is rotatably connected to the mounting base; the stepper motor is used to drive the drive wheel to rotate; a screw is rotatably mounted on the lower end of the mounting base; the screw is helically connected to the machine body; characterized in that: A connecting frame is installed on the side of the drive wheel near the machine door; a connecting cavity is opened inside the machine body; the connecting frame is installed inside the connecting cavity; a drive wheel and a follower wheel are installed on the side of the connecting frame away from the drive wheel; the drive wheel and the drive wheel are connected by a transmission shaft; the drive wheel drives the drive wheel to rotate through the transmission shaft; a guide wheel assembly is rotatably installed on the side of the connecting frame near the follower wheel; the guide wheel assembly includes a first guide wheel and a second guide wheel; a positioning wheel is installed inside the processing table; A tightening assembly is installed on one side of the connecting frame; the tightening assembly is used to tighten the saw blade at the follower wheel; A clamping assembly is installed on the upper end of the processing table; the clamping assembly is used to clamp the aluminum alloy casting. It also includes a first saw blade and a second saw blade, with the first saw blade fitted onto the drive wheel and the driven wheel, and the second saw blade fitted onto the drive wheel and the follower wheel.

2. The aluminum alloy casting edge trimming equipment according to claim 1, characterized in that: A lead screw is rotatably connected inside the connecting cavity; the lead screw is helically connected to the connecting frame; a servo motor is installed on one side of the machine body; the servo motor is used to drive the connecting frame to slide inside the connecting cavity.

3. The aluminum alloy casting edge trimming equipment according to claim 2, characterized in that: The tightening assembly includes a hinge plate, with the first and second guide wheels rotatably mounted on the side of the hinge plate near the connecting frame; a worm gear is rotatably mounted inside the connecting frame; the worm gear is fixedly connected to the hinge plate; a worm is provided on one side of the worm gear; the worm meshes with the worm gear; and the worm and the lead screw are connected through a transmission assembly.

4. The aluminum alloy casting edge trimming equipment according to claim 3, characterized in that: The transmission assembly includes a guide rod; a first bevel gear ring is sleeved on the surface of the guide rod, and a second bevel gear ring, meshing with the first bevel gear ring, is fixedly connected to the surface of the lead screw; the first bevel gear ring is connected to the cavity wall of the connecting cavity via a transmission spring; an electromagnetic ring is embedded in the cavity wall of the connecting cavity; a third bevel gear ring is rotatably installed inside the connecting frame; the third bevel gear ring is slidably connected to the guide rod; a bevel gear shaft is rotatably installed inside the connecting frame; the bevel gear shaft meshes with the third bevel gear ring; the bevel gear shaft and the worm gear are connected by a toothed belt for belt drive; a correction unit is provided between the second guide wheel and the positioning wheel; the correction unit is used to drive the driven wheel and the positioning wheel to move synchronously.

5. The aluminum alloy casting edge trimming equipment according to claim 4, characterized in that: The correction unit includes a correction rod; a groove is formed on the surface of the correction rod; a connecting rod is slidably connected in the groove; the connecting rod is connected to the end of the hinge plate away from the connecting frame; the end of the correction rod away from the hinge plate is rotatably connected to the positioning wheel.

6. The aluminum alloy casting edge trimming equipment according to claim 3, characterized in that: A rectangular groove is formed at the end of the hinge plate away from the connecting frame; a connecting plate is slidably and sealingly connected within the rectangular groove; a connecting rod is connected to the end of the connecting plate away from the hinge plate; a first guide wheel is rotatably connected to the hinge plate; a second guide wheel is rotatably connected to the end of the connecting plate away from the hinge plate; a groove is formed on the side of the connecting plate away from the follower wheel; a rack is fixedly connected to the inner wall of the groove; a connecting gear that meshes with the rack is provided in the groove; the connecting gear is rotatably connected to the hinge plate via a rotating rod; a locking ring is sleeved on the surface of the rotating rod; the locking ring is threadedly connected to the rotating rod.

7. The aluminum alloy casting edge trimming equipment according to claim 6, characterized in that; A rotating roller is rotatably connected to the surface of the first guide wheel; the rotating roller is configured as a frustum cone; the larger end of the rotating roller is close to the hinge plate.

8. The aluminum alloy casting edge trimming equipment according to claim 5, characterized in that: The lower end face of the correcting rod is provided with a pressing groove; a pressing block is slidably connected in the pressing groove; a cam is rotatably connected in the pressing groove; a pressure rod is rotatably connected to the side wall of the correcting rod; the pressure rod is fixedly connected to the cam.

9. The aluminum alloy casting edge trimming equipment according to claim 1, characterized in that: The clamping assembly includes a support plate; a U-shaped plate is slidably connected to the upper end of the support plate; there are two U-shaped plates; the two U-shaped plates are connected by a screw drive; a sliding plate is slidably connected to the upper end of the U-shaped plate; a pressure plate is hinged to the upper end of the sliding plate; a pneumatic push rod is provided on one side of the pressure plate; the pneumatic push rod is hinged to the pressure plate.

10. The aluminum alloy casting edge trimming equipment according to claim 9, characterized in that: A dust baffle is snapped onto the upper end of the support plate; a corrugated plate is fixedly connected to the side of the dust baffle away from the machine body.

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