Automatic deburring equipment for aluminum die castings

Abstract

The invention relates to the technical field of casting burr machining, in particular to aluminum die casting automatic deburring equipment which comprises a grinding unit, a sliding rail, a compensation set and a guiding unit. The left and right flush strips are equal to the casting in height, so that the left and right ends of the casting are protected, and the problem that the appearance of the casting is affected due to the fact that the two ends of the casting are excessively polished due to the fact that the two ends of the casting are partially wrapped by the flexibility of the abrasive belt is solved; the continuous time of contact between the two sides is shortened while sufficient polishing is guaranteed, and the problem that the attractiveness and the size are affected due to the fact that the two ends of the casting are excessively polished is avoided under the condition of double assurance by matching with attaching protection of a flush strip; the safety problem that the casting flies out due to shearing force generated by high-speed rotation of the abrasive belt on the casting when the casting is separated from the abrasive belt is solved, meanwhile, the stability of the casting during polishing is improved, and the polishing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of casting burr removal technology, specifically to an automatic deburring device for aluminum die castings. Background Technology

[0002] Aluminum die castings are aluminum alloy parts produced using high-pressure casting technology. The basic principle is to inject molten liquid aluminum alloy into a precision metal mold, and then rapidly fill, cool and solidify it under high pressure to finally form the desired shape. However, during the high-pressure injection process, the molten aluminum will inevitably overflow from tiny gaps in the mold parting surface, ejector pin holes, and slider structure, forming excess flakes or flash, i.e., burrs, after cooling.

[0003] To improve the aesthetics of the product and prepare for subsequent processes, burrs on the castings need to be removed by grinding. For flat castings, a belt grinder is usually used to grind and polish the surface of the casting. The specific operation is as follows: the casting to be ground is placed on the conveyor belt of the belt grinder and gradually moved synchronously along the conveyor belt. Then the sand belt grinds the upper surface of the casting.

[0004] The current grinding and deburring process has the following problems: Because the abrasive belt is flexible, when grinding the edges of flat castings, the belt will wrap around the edges of the casting, which makes the casting prone to over-grinding, forming excessively large rounded corners, ultimately affecting the product's aesthetics and dimensional specifications. Secondly, due to the high-speed movement of the abrasive belt, a shearing force parallel to the direction of belt movement will be generated on the surface of the casting, which may cause the casting to be ejected or rolled into the equipment during discharge or grinding due to uneven force. Summary of the Invention

[0005] Therefore, it is necessary to provide an automatic deburring device for aluminum die castings, which aims to solve the problems of the prior art.

[0006] This application provides an automatic deburring device for aluminum die castings, including: a conveying assembly for conveying the castings, the conveying assembly including a conveyor belt and a frame, and a grinding mechanism disposed above the frame.

[0007] The grinding mechanism includes a grinding unit. The grinding unit is fixedly installed on the frame and located on the upper side of the conveyor belt. The grinding unit includes multiple sand belts that are equidistant from left to right and whose mesh size gradually increases from right to left. All sand belts grind the upper surface of the casting sequentially from right to left.

[0008] The frame is fixedly equipped with two symmetrically distributed slide rails, and two left and right abutment frames are provided between the two slide rails. The left abutment frame is fixedly connected to the conveyor belt, and the casting between the two is clamped and locked by locking the two abutment frames.

[0009] The clamping frame is equipped with a compensation group, which includes a leveling strip. The leveling strip is installed above the clamping frame. Before the two clamping frames are locked in the clamping state, the leveling strip is adjusted so that the leveling strip is flush with the casting.

[0010] The frame is equipped with a guide unit that guides the sanding belt downwards for grinding and controls the sanding belt upwards to avoid obstacles.

[0011] By using two flat strips to fit and wrap around the left and right sides of the casting, and the guide unit to control the sand belt to move upward to avoid the casting and the flat strips, the two effects work together to complete the process of protecting the left and right edges of the casting during the deburring operation.

[0012] According to an advantageous embodiment, two sliding blocks are slidably arranged in the slide rail, and the clamping frame is fixedly connected to the corresponding front and rear sliders.

[0013] A locking screw with an axis extending from left to right is installed through the two corresponding clamping frames on the left and right sides, and a nut located on the right side of the right clamping frame is threaded onto the locking screw.

[0014] According to an advantageous embodiment, the compensation group further includes mounting rods, and a plurality of mounting rods are fixedly provided on the lower end face of the flush strip, arranged equidistantly from front to back with vertical axes, and the mounting rods are slidably mounted on the corresponding abutment frame.

[0015] The upper end face of the clamping frame is provided with a placement groove corresponding to the mounting rod. Multiple compensation rings are placed in the placement groove and fitted onto the mounting rod. By placing a set number of compensation rings, the leveling strip is raised so that the leveling strip is flush with the casting.

[0016] According to an advantageous embodiment, Z-shaped locking frames are fixedly provided on both the front and rear sides of the clamping frame, with the left and right locking frames being symmetrical to each other. The upper end face of the left locking frame away from the transverse section of the corresponding clamping frame is inclined from top to bottom to the left.

[0017] The locking screw is fitted with two symmetrical L-shaped mounting brackets, and two corresponding sliding blocks are located between the two mounting brackets. Locking blocks are fixedly installed on the opposite surfaces of the mounting brackets, and the lower end surface of the locking block matches the inclined surface of the corresponding locking bracket.

[0018] After tightening the nut, the sliding block, locking bracket, locking block and mounting bracket are locked.

[0019] According to an advantageous embodiment, the guide unit includes a housing, the housing is fixedly mounted on the upper side of the frame, and multiple lifting frames are slidably mounted on both the front and rear sides of the housing, arranged equidistantly from left to right, with a sanding belt positioned between two opposing lifting frames.

[0020] The two opposing lifting frames are each fixed with guide columns extending from top to bottom via mounting blocks. The frame is fixed with docking seats corresponding to the guide columns, and the upper end of the docking seat is provided with a guide groove extending downwards.

[0021] According to an advantageous embodiment, a spacer ring is slidably sleeved on the guide post, and the spacer ring is locked by bolt locking after adjusting the vertical position of the spacer ring on the guide post.

[0022] According to an advantageous embodiment, a receiver is fixedly disposed on the lower end face of the mounting block, and a transmitter is fixedly disposed on the front end face of the front right sliding block by means of a rectangular plate, and the transmitter is positioned opposite to the middle position of the right-side flush strip and the casting.

[0023] When the receiver moves directly above the transmitter, the signal emitted by the transmitter is received by the receiver and the corresponding sanding belt is controlled by the control circuit.

[0024] According to an advantageous embodiment, the front end face of the sliding block on the front and rear left sides is fixedly provided with a second transmitter by a rectangular plate, and the second transmitter is opposite to the left side flat strip.

[0025] When the receiver moves directly above the second transmitter, the signal emitted by the second transmitter is received by the receiver and the corresponding sanding belt is controlled by the control circuit.

[0026] According to an advantageous embodiment, in addition to the two rightmost lifting frames, an auxiliary pressure roller with an axis extending forward and backward is rotatably arranged between two front-to-back lifting frames via an L-shaped frame, and the lowest point of the auxiliary pressure roller is flush with the lower end of the corresponding sanding belt.

[0027] The auxiliary pressure roller is fixedly provided with a spiral cleaning brush on its circumferential surface.

[0028] In summary, the present invention has at least one of the following beneficial effects: First, by using two flush strips on the left and right sides that are at the same height as the casting, the left and right ends of the casting are protected, mitigating the problem of excessive grinding at the ends of the casting due to the flexibility of the sanding belt partially wrapping around them, thus forming excessively large rounded corners and ultimately affecting the appearance of the casting itself. Second, by raising the sanding belt to avoid the casting, sufficient grinding is ensured while reducing the duration of contact between the two sides and the sanding belt. Combined with the above-mentioned flush strips, the problem of excessive grinding at the ends of the casting, which affects the aesthetics and dimensions, is avoided under the dual guarantee.

[0029] Second, in this invention, the casting is clamped and locked by two clamping frames, and the auxiliary pressure roller provides additional downward pressure. This avoids the safety problem of the casting flying out due to the shearing force generated by the high-speed rotation of the sand belt when the casting comes out of contact with the sand belt. At the same time, it increases the stability of the casting during grinding and improves the grinding effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of an automatic deburring device for aluminum die castings provided according to an embodiment of the present invention is shown.

[0032] Figure 2 A partial three-dimensional structural schematic diagram of an automatic deburring device for aluminum die castings provided according to an embodiment of the present invention is shown.

[0033] Figure 3 A partial three-dimensional structural diagram of the clamping frame, the flush strip, and the mating seat provided according to an embodiment of the present invention is shown.

[0034] Figure 4 A partial exploded three-dimensional structural diagram of the space between the clamping frame, the flush strip, and the compensation ring provided according to an embodiment of the present invention is shown.

[0035] Figure 5 An exploded side view of the structure between the clamping frame, the flush strip, and the mounting rod provided according to an embodiment of the present invention is shown.

[0036] Figure 6 A side view of the guide post, receiver, and docking seat provided according to an embodiment of the present invention is shown.

[0037] Figure 7 A schematic diagram of the structure between the sanding belt, the lifting frame, and the auxiliary pressure roller provided according to an embodiment of the present invention is shown.

[0038] Figure 8 A schematic diagram showing the changes in the state of the flush strip bonding protection provided according to an embodiment of the present invention is shown.

[0039] The above-mentioned attached drawings include the following reference numerals: 1. Conveyor belt; 2. Frame; 3. Grinding mechanism; 30. Grinding unit; 300. Sanding belt; 31. Slide rail; 32. Clamping frame; 33. Compensation group; 330. Flush bar; 331. Mounting rod; 332. Placement groove; 333. Compensation ring; 334. Locking frame; 335. Mounting frame; 336. Locking block; 34. Sliding block; 340. Locking screw; 40. Guide unit; 400. Outer shell; 401. Lifting frame; 402. Guide column; 403. Docking seat; 404. Distance ring; 405. Receiver; 406. Transmitter one; 407. Transmitter two; 41. Auxiliary pressure roller; 410. Cleaning brush. Detailed Implementation

[0040] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] like Figure 1 and Figure 2 As shown, an automatic deburring device for aluminum die castings includes: a conveying assembly, which includes a conveyor belt 1 and a frame 2, with a grinding mechanism 3 disposed above the frame 2.

[0042] The grinding mechanism 3 includes a grinding unit 30. The grinding unit 30 is fixedly installed on the frame 2 and located on the upper side of the conveyor belt 1. The grinding unit 30 includes multiple sanding belts 300 arranged equidistantly from left to right and with the mesh size gradually increasing from right to left.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, two symmetrically distributed slide rails 31 are fixedly installed on the frame 2. Two left and right abutting frames 32 are arranged between the two slide rails 31. The left abutting frame 32 is fixedly connected to the conveyor belt 1. The casting between the two is clamped and locked by locking the two abutting frames 32.

[0044] like Figure 3 As shown, the clamping frame 32 is provided with a compensation group 33, which includes a leveling strip 330. The leveling strip 330 is installed above the clamping frame 32. Before the two clamping frames 32 are locked and clamped, the leveling strip 330 is adjusted so that the leveling strip 330 is level with the height of the casting, and then locked. The two leveling strips 330 respectively wrap and protect the left and right sides of the workpiece.

[0045] like Figure 1 and Figure 2 As shown, the frame 2 is equipped with a guide unit 40 that guides the sand belt 300 to move downward and controls the sand belt 300 to move upward to avoid obstacles. After the casting is moved to the sides below the sand belt 300 for grinding, the guide unit 40 controls the sand belt 300 to move upward.

[0046] It should be further explained that the conveyor belt 1 is driven by an external existing motor in the conveying assembly, which controls the conveying process of the conveyor belt 1. Secondly, the upper horizontal section of the conveyor belt 1 is kept straight to provide stable support for the castings placed on it, ensuring that the subsequent deburring operation will not be affected by the collapse of the conveyor belt 1. The sand belt 300 is driven by an external drive motor to rotate and grind. The above descriptions are all external existing technologies, and will not be elaborated on further.

[0047] During operation, in the initial state, both left and right clamping frames 32 are located in the right area. The casting to be polished is placed on the conveyor belt 1 by the operator, so that the casting is between the two clamping frames 32. Then, the leveling strip 330 is installed and its height is adjusted so that the height of the leveling strip 330 is consistent with the height of the casting. At this time, the two clamping frames 32 are locked, and finally the two clamping frames 32 clamp the casting and hold it, while also locking the height of the leveling strip 330.

[0048] Then, conveyor belt 1 drives the clamping frame 32, casting, and flush strip 330 to move synchronously to the left. The sanding belt 300 rotates under the drive of an external motor, and the guide unit 40 operates simultaneously. As the casting passes under each sanding belt 300 from right to left, the upper surface of the casting is deburred and polished. Additional notes regarding the polishing process are provided in the [reference needed]. Figure 8 By using two flat strips 330 on the left and right sides that are at the same height as the casting, the left and right ends of the casting are protected. This mitigates the problem of excessive grinding at the ends of the casting due to the flexible nature of the sand belt 300 partially wrapping the ends of the casting, which would result in excessively large rounded corners and ultimately affect the appearance of the casting itself.

[0049] Secondly, the guide unit 40 not only guides the downward movement of the abrasive belt 300 during the grinding process, improving the stability during grinding after downward movement, but also controls the abrasive belt 300 to move upward after it has moved to the upper right end of the casting and completed the grinding operation on the casting. This avoids the side of the casting. In combination with the protective effect of the flush strip 330, the above-mentioned method reduces the excessive grinding of both ends of the casting, and also reduces the wear on the flush strip 330 after the abrasive belt 300 comes into contact with the flush strip 330 during grinding.

[0050] After the burrs are removed, the conveyor belt 1 moves the casting to the right to reset and removes the polished casting. During this process, the sand belt avoids the casting and does not come into contact with it.

[0051] like Figure 3 As shown, two sliding blocks 34 are slidably arranged in the slide rail 31, and the clamping frame 32 is fixedly connected to the corresponding front and rear sliding blocks 34.

[0052] like Figure 3 and Figure 4 As shown, a locking screw 340 with its axis extending from left to right is movably installed between the two corresponding left and right clamping brackets 32. A nut located on the right side of the right clamping bracket 32 ​​is threaded onto the locking screw 340.

[0053] The two clamping frames 32 are locked by tightening the nuts. The conveyor belt 1 drives the left clamping frame 32 and the sliding block 34 to move to the left, while simultaneously driving the casting and the right clamping frame 32 and the sliding block 34 to move synchronously.

[0054] Initially, both clamping frames 32 and sliding blocks 34 are located on the right side of the sanding belt 300. The distance between the two sliding blocks 34 is manually adjusted. Then, the casting to be ground is placed on the conveyor belt 1, with the left end face of the casting pressed against the right end face of the left clamping frame 32. The right sliding block 34 is adjusted so that the left end face of the right clamping frame 32 presses against the casting. Then, the height of the leveling strip 330 is adjusted so that the leveling strip 330 is flush with the casting. Finally, the front and rear nuts are manually tightened. Thus, the casting is clamped and locked by locking the two clamping frames 32, avoiding the safety problem of the casting flying out due to the shearing force generated by the high-speed rotation of the sanding belt 300 when the casting is separated from the sanding belt 300. At the same time, the stability of the casting during grinding is increased, and the grinding effect is improved.

[0055] like Figure 3 , Figure 4 and Figure 5 As shown, the compensation group 33 also includes mounting rods 331. Multiple mounting rods 331 are fixedly arranged at equal intervals from front to back with vertical axes on the lower end face of the flush strip 330. The mounting rods 331 are slidably mounted on the corresponding clamping frame 32.

[0056] The upper end face of the clamping frame 32 is provided with a placement groove 332 corresponding to the mounting rod 331. Multiple compensation rings 333 stacked on top of each other and sleeved on the mounting rod 331 are placed in the placement groove 332. By placing a set number of compensation rings 333, the leveling strip 330 is raised so that the leveling strip 330 is flush with the casting.

[0057] like Figure 3 , Figure 4 and Figure 5 As shown, Z-shaped locking frames 334 are fixedly installed on both the front and rear sides of the clamping frame 32. The two locking frames 334 are symmetrical to each other (taking the left locking frame 334 as an example). The upper end face of the horizontal section of the left locking frame 334 away from the corresponding clamping frame 32 is inclined to the left from top to bottom.

[0058] The locking screw 340 is fitted with two symmetrical L-shaped mounting brackets 335. Two corresponding sliding blocks 34 are located between the two mounting brackets 335. Locking blocks 336 are fixedly installed on the opposite surfaces of the mounting brackets 335. The lower end surface of the locking block 336 is engaged with the inclined surface of the corresponding locking bracket 334.

[0059] During operation, after the two clamping frames 32 clamp the casting, the corresponding number and thickness of the compensation rings 333 are selected according to the thickness of the casting and placed in the corresponding placement slots 332. Then, the leveling strip 330 is installed manually by inserting the installation rod 331, so that the installation rod 331 passes through the corresponding compensation ring 333. Due to the height compensation of the compensation ring 333, the height of the leveling strip 330 is equal to the height of the casting.

[0060] Then tighten the nut onto the locking screw 340. During the tightening and locking process, the nut presses against the adjacent mounting bracket 335, and the left end of the locking screw 340 presses against the adjacent mounting bracket 335. Therefore, the two mounting brackets 335 on the same locking screw 340 move closer to each other. The mounting bracket 335 drives the locking block 336 on it to move synchronously. After the inclined surface of the locking block 336 is in contact with the inclined surface of the locking bracket 334, as the mounting bracket 335 is continuously pressed, the locking block 336 exerts a downward pressure on the locking bracket 334, which indirectly exerts a downward pressure on the flush strip 330. At this point, the locking block 336 and the mounting bracket 335 can no longer move. Tighten the nut to finally lock the flush strip 330, the locking block 336, the mounting bracket 335, the sliding block 34, and the abutment bracket 32.

[0061] It should be further explained that by superimposing the compensation height of the aforementioned compensation ring 333, the equipment can adapt to the grinding process of castings of different thicknesses, thereby improving its versatility. Secondly, by tightening the nuts on both the front and rear sides, the clamping and holding processes of the two clamping frames 32 and the locking process of the flat strip 330 are completed simultaneously, thereby improving the convenience of the equipment during operation.

[0062] like Figure 2 As shown, the guide unit 40 includes an outer shell 400. The outer shell 400 is fixedly installed on the upper side of the frame 2. Multiple lifting frames 401 are slidably arranged from left to right on both the front and rear sides of the outer shell 400. The lifting frames 401 are driven to move up and down by an external hydraulic cylinder (not shown in the figure). The external hydraulic cylinder can be a servo hydraulic cylinder to improve the response speed during up and down lifting. The sanding belt 300 is set between two opposite lifting frames 401.

[0063] like Figure 2 and Figure 6As shown, the two opposing lifting frames 401 are each fixedly provided with guide columns 402 extending from top to bottom by mounting blocks on their opposite sides. The frame 2 is fixedly provided with docking seats 403 corresponding to the guide columns 402 one by one. The upper end of the docking seat 403 is provided with a guide groove extending downward.

[0064] like Figure 2 and Figure 6 As shown, the guide post 402 is slidably fitted with a spacer ring 404. After adjusting the vertical position of the spacer ring 404 on the guide post 402, the spacer ring 404 is locked by bolt locking.

[0065] like Figure 4 and Figure 6 As shown, a receiver 405 is fixedly installed on the lower end face of the mounting block, and a transmitter 406 is fixedly installed on the front end face of the sliding block 34 on the right front side through a rectangular plate. The transmitter 406 is positioned opposite to the right-side flush strip 330 and the middle position of the casting, ensuring that the sand belt 300 has completed the full grinding of the upper end face of the casting when it moves upward to avoid it.

[0066] When the receiver 405 moves directly above the transmitter 406, the signal emitted by the transmitter 406 is received by the receiver 405 and the corresponding external hydraulic cylinder is controlled by the control circuit.

[0067] like Figure 4 and Figure 6 As shown, the front end face of the sliding block 34 on the front and rear left sides is fixedly provided with a second transmitter 407 by a rectangular plate, and the second transmitter 407 is opposite to the left flat strip 330, ensuring that the sand belt 300 can move to the set height before the sand belt 300 contacts the casting.

[0068] When receiver 405 moves directly above transmitter 407, the signal emitted by transmitter 407 is received by receiver 405 and the corresponding external hydraulic cylinder is controlled by the control circuit.

[0069] During operation, the process of grinding a casting from right to left under one of the sand belts 300 is illustrated as follows: After the clamping frame 32 clamps the casting, the external motor operates, causing the conveyor belt 1 to move the casting on it and the transmitters 406 and 407 on both sides to move to the left in sync. When transmitter 407 moves to the position directly below receiver 405, the signal emitted by transmitter 407 is received by receiver 405 and fed back to the control circuit. The control circuit controls the external hydraulic cylinder to operate, causing the corresponding lifting frame 401 to move the sand belt 300 on it to the grinding position. The lifting frame 401 also moves the guide column 402 and the spacer ring 404 on it to move down in sync.

[0070] It should be further explained that after the guide post 402 passes through the corresponding guide groove, it guides and limits the downward movement of the abrasive belt 300 to ensure the accuracy of grinding during the downward movement. This prevents the grinding accuracy from being affected by the up-and-down movement of the abrasive belt 300. Before the grinding operation, based on the known casting thickness and grinding requirements, the distance between the abrasive belt 300 and the upper side of the conveyor belt 1 after its downward movement is adjusted so that this distance is suitable for the grinding requirements of the corresponding casting. At the same time, the spacer ring 404 is manually adjusted to the above-mentioned suitable position and locked with bolts. During the downward movement of the lifting frame 401, the guide column 402 drives the spacer ring 404 to move downward synchronously. After the spacer ring 404 contacts the docking seat 403, it prevents the guide column 402 and the lifting frame 401 from moving downward. The downward movement height of the lifting frame 401 and the sanding belt 300 is strictly controlled to avoid over-grinding. Secondly, regarding the locking process of the spacer ring 404, any technical solution that has the effect of locking the spacer ring 404 can be replaced. Those skilled in the art can choose to use it according to the appropriate situation. After locking, the position of the spacer ring 404 remains unchanged.

[0071] The external drive motor causes the sanding belt 300 to rotate. As the conveyor belt 1 continues to move the casting to the left, the sanding belt 300 rotates to grind the upper surface of the casting. Then, the right sliding block 34 drives the transmitter 406 on it to gradually move to below the receiver 405. At this time, the grinding process of the upper surface of the casting is completed. The signal emitted by the transmitter 406 is received by the receiver 405 and also fed back to the control circuit. The control circuit controls the external hydraulic cylinder to work, so that the lifting frame 401 drives the sanding belt 300 to move up quickly. This avoids the problem of the casting ends being over-grinded and forming excessively large rounded corners due to the flexibility of the sanding belt 300 itself. At the same time, it also protects the flat strip 330, preventing the flat strip 330 from being over-weared and affecting its service life and accuracy.

[0072] The grinding process proceeds from right to left through multiple sanding belts 300, and the above process is repeated. In summary, the double protection provided by the flush strip 330 and the sanding belt 300's adaptation to the upward movement and avoidance process reduces the problem of excessive grinding on both sides of the casting due to the flexibility of the sanding belt 300 itself. Furthermore, the transmitter 1 406, transmitter 2 407, receiver 405, and control circuit mentioned above are all external existing technologies, which will not be elaborated on here.

[0073] like Figure 7 As shown, except for the two rightmost lifting frames 401, the two front-to-back lifting frames 401 are rotatably connected by an L-shaped frame with an auxiliary pressure roller 41 extending front-to-back along its axis. The lowest point of the auxiliary pressure roller 41 is flush with the lower end of the corresponding sanding belt 300. The auxiliary pressure roller 41 is driven by an external motor (not shown in the figure).

[0074] The auxiliary pressure roller 41 is fixedly provided with a spiral cleaning brush 410 on its circumferential surface.

[0075] During operation, as the lifting frame 401 moves up and down, the lifting frame 401 drives the auxiliary pressure roller 41 on it to move down to the set height simultaneously. During the movement and grinding of the casting, the auxiliary pressure roller 41 fits against the upper end of the casting to help restrict the casting and avoid the shearing force generated by the high-speed rotation of the sand belt 300 affecting the position of the casting, thus improving the stability during grinding. Secondly, the external motor drives the auxiliary pressure roller 41 to rotate synchronously. The cleaning brush 410 on the auxiliary pressure roller 41 cleans the debris generated by grinding on the surface of the casting during the rotation process, and guides the debris out of the surface of the casting in a spiral shape, so as to avoid the debris affecting the subsequent grinding process and improve the grinding quality.

[0076] It should be further explained that, compared to the existing technology of directly placing the casting into the belt grinder for deburring, this invention adds a flat strip 330 and a guide unit 40. The flat strip 330 fits against both sides of the casting, providing both locking and clamping protection. The guide unit 40 guides the up-and-down movement of the abrasive belt 300, increasing grinding stability and ensuring complete deburring while also allowing for upward movement to avoid obstacles. Through the protection provided by the flat strip 330 and the avoidance action during the guidance process, the problem of excessively large rounded corners caused by over-grinding of the abrasive belt, which could affect the normal dimensions of the casting, is avoided. It also reduces wear on the flat strip 330. The added components are all common mechanical parts that can be used repeatedly after a single installation. Compared to the economic benefits of protecting the dimensions of both sides of the casting, the cost of adding these components is negligible. In summary, this technical solution is a specific improvement based entirely on the existing technology and aimed at solving the technical problems described above.

[0077] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0078] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic deburring device for aluminum die castings, characterized in that, include: A conveying assembly for conveying castings includes a conveyor belt and a frame, with a grinding mechanism disposed above the frame; The grinding mechanism includes a grinding unit. A grinding unit is fixedly installed on the frame and located on the upper side of the conveyor belt. The grinding unit includes multiple sand belts that are equidistant from left to right and whose mesh size gradually increases from right to left. All sand belts grind the upper surface of the casting sequentially from right to left. Two slide rails are fixedly installed on the frame and are symmetrically distributed in front and behind. Two clamping frames are installed between the two slide rails and are distributed in the left and right. The left clamping frame is fixedly connected to the conveyor belt. The casting between the two is clamped and locked by locking the two clamping frames. The clamping frame is equipped with a compensation group, which includes a leveling strip. The leveling strip is installed above the clamping frame. Before the two clamping frames are locked and clamped, the leveling strip is adjusted to make the leveling strip flush with the casting. The frame is equipped with a guide unit that guides the sanding belt to move downwards for grinding and controls the sanding belt to move upwards to avoid obstacles. By using two flat strips to fit and wrap around the left and right sides of the casting, and the guide unit to control the sand belt to move upward to avoid the casting and the flat strips, the two effects work together to complete the process of protecting the left and right edges of the casting during the deburring operation.

2. The automatic deburring equipment for aluminum die castings according to claim 1, characterized in that: Two sliding blocks are slidably arranged in the slide rail, and the clamping frame is fixedly connected to the corresponding front and rear sliding blocks. A locking screw with an axis extending from left to right is installed through the two corresponding clamping frames on the left and right sides, and a nut located on the right side of the right clamping frame is threaded onto the locking screw.

3. The automatic deburring equipment for aluminum die castings according to claim 1, characterized in that: The compensation group also includes mounting rods. Multiple mounting rods are fixedly installed on the lower end face of the flat strip, arranged equidistantly from front to back with vertical axes. The mounting rods are slidably installed on the corresponding clamping frame. The upper end face of the clamping frame is provided with a placement groove corresponding to the mounting rod. Multiple compensation rings are placed in the placement groove and fitted onto the mounting rod. By placing a set number of compensation rings, the leveling strip is raised so that the leveling strip is flush with the casting.

4. The automatic deburring equipment for aluminum die castings according to claim 2, characterized in that: Z-shaped locking frames are fixedly installed on both the front and rear sides of the clamping frame. The two locking frames on the left and right are symmetrical to each other. The upper end face of the horizontal section of the left locking frame away from the corresponding clamping frame is inclined from top to bottom to the left. The locking screw is fitted with two symmetrical L-shaped mounting brackets, and two corresponding sliding blocks are located between the two mounting brackets. Locking blocks are fixedly installed on the opposite surfaces of the mounting brackets, and the lower end surface of the locking block matches the inclined surface of the corresponding locking bracket. When the nut is tightened, the sliding block, locking bracket, locking block and mounting bracket are locked.

5. The automatic deburring equipment for aluminum die castings according to claim 1, characterized in that: The guide unit includes an outer shell, which is fixedly installed on the upper side of the frame. Multiple lifting frames are equidistantly arranged from left to right on both the front and rear sides of the outer shell. The sanding belt is placed between two opposite lifting frames. The two opposing lifting frames are each fixed with guide columns extending from top to bottom via mounting blocks. The frame is fixed with docking seats corresponding to the guide columns, and the upper end of the docking seat is provided with a guide groove extending downwards.

6. The automatic deburring equipment for aluminum die castings according to claim 5, characterized in that: The guide post is fitted with a spacer ring that slides up and down. After adjusting the vertical position of the spacer ring on the guide post, the spacer ring is locked by bolt tightening.

7. The automatic deburring equipment for aluminum die castings according to claim 5, characterized in that: A receiver is fixedly installed on the lower end face of the mounting block, and a transmitter is fixedly installed on the front end face of the front right sliding block through a rectangular plate. The transmitter is positioned opposite to the middle position of the right-side flush strip and the casting. When the receiver moves directly above the transmitter, the signal emitted by the transmitter is received by the receiver and the corresponding sanding belt is controlled by the control circuit.

8. The automatic deburring equipment for aluminum die castings according to claim 7, characterized in that: The front end face of the sliding block on the front and rear left sides is fixedly provided with a second transmitter by a rectangular plate, and the second transmitter is opposite to the left side flat strip. When the receiver moves directly above the second transmitter, the signal emitted by the second transmitter is received by the receiver and the corresponding sanding belt is controlled by the control circuit.

9. An automatic deburring device for aluminum die castings according to claim 5, characterized in that: Except for the two rightmost lifting frames, the two front-to-back lifting frames are connected by an L-shaped frame with an auxiliary pressure roller extending front-to-back along its axis. The lowest point of the auxiliary pressure roller is flush with the lower end of the corresponding sanding belt. The auxiliary pressure roller is fixedly provided with a spiral cleaning brush on its circumferential surface.

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