An automatic deburring equipment for aluminum die castings

Abstract

The present application relates to the technical field of casting burr processing, in particular to an automatic deburring equipment for aluminum die casting, comprising a polishing unit, a sliding rail, a compensation group and a guide unit. In the present application, the left and right two flat strips are in the same height with the casting, protecting the left and right ends of the casting, slowing down the problem that the two ends of the casting are excessively polished due to the partial wrapping of the sand belt on the two ends of the casting caused by the flexibility of the sand belt itself, thereby forming an excessive round corner and affecting the appearance of the casting itself. Secondly, the sand belt is raised to avoid the casting, ensuring sufficient polishing while reducing the contact duration on both sides, and the problem of affecting the appearance and size caused by excessive polishing of the two ends of the casting is avoided under the condition of double protection of the fit protection of the flat strip. Through the clamping of the two abutting frames and the auxiliary pressing effect of the auxiliary pressing roller, the safety problem that the casting is cut off and flies out due to the shearing force generated by the high-speed rotation of the sand belt on the casting when the casting is separated from the contact with the sand belt is avoided, at the same time, the stability of the casting during polishing is increased, and the polishing effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting burr processing, in particular to an automatic deburring equipment for aluminum die castings. BACKGROUND

[0002] Aluminum die castings are aluminum alloy parts produced by high-pressure casting process. The basic principle is to inject molten liquid aluminum alloy into a precise metal mold and rapidly fill the mold, cool and solidify under high pressure to form the desired shape of the part. However, during the high-pressure injection process, molten aluminum inevitably overflows from the parting surface, pinhole, slider structure and other small gaps in the mold, forming excess thin sheets or burrs after cooling.

[0003] In order to improve the appearance of the product and prepare for the subsequent process, the burrs on the casting need to be polished and removed. For the deburring of flat plate castings, a belt sander is usually used to polish the surface of the casting. The specific operation is as follows: the casting to be polished is placed on the conveyor belt in the belt sander, and gradually moved along the conveyor belt in synchronization, and then the upper surface of the casting is polished by the belt.

[0004] The current polishing and deburring process has the following problems: since the belt is flexible, when polishing the edge of the flat plate casting, the belt will wrap around the edge of the casting, causing the casting to be over-polished and forming an excessively large radius, which ultimately affects the appearance and size specifications of the product. Secondly, due to the high-speed movement of the belt, a shear force parallel to the direction of belt movement is generated on the surface of the casting, which can cause the casting to be ejected or rolled into the equipment due to uneven stress when it is discharged or polished. SUMMARY

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

[0006] The present application provides an automatic deburring equipment for aluminum die castings, which comprises a conveying assembly for conveying the casting, the conveying assembly comprising a conveyor belt and a rack, and a polishing mechanism arranged above the rack.

[0007] The polishing mechanism comprises a polishing unit, and the polishing unit is fixedly arranged on the upper side of the conveyor belt. The polishing unit comprises a plurality of belts arranged equidistantly from left to right and gradually increasing in mesh from right to left. All the belts polish the upper surface of the casting from right to left.

[0008] Two front and rear symmetrically distributed sliding rails are fixedly arranged on the rack, and two left and right distributed abutting frames are arranged between the two sliding rails. The left abutting frame is fixedly connected with the conveyor belt, and the casting between the two abutting frames is clamped and locked by locking the two abutting frames.

[0009] The abutting frame is provided with a compensation group, the compensation group comprises a flush strip, the flush strip is installed above the abutting frame, and the flush strip is adjusted to be flush with the casting before the two abutting frames are locked in the clamping state.

[0010] The guide unit is arranged on the rack to guide the downward polishing process of the sand belt and control the upward avoidance of the sand belt.

[0011] The left and right flush strips are attached to the left and right sides of the casting, the guide unit controls the upward avoidance of the sand belt and the flush strip, and the double effects are cooperated to complete the protection process of the left and right edges of the casting in the deburring operation.

[0012] According to an advantageous embodiment, two sliding blocks are arranged in the slide rail and slide left and right, and the abutting frame is fixedly connected with the corresponding front and rear sliding blocks.

[0013] Two abutting frames corresponding to each other are movably penetrated by a locking screw rod extending from left to right along an axis, and a nut is threadedly installed on the locking screw rod and located on the right side of the right abutting frame.

[0014] According to an advantageous embodiment, the compensation group further comprises an installation rod, a plurality of installation rods vertically arranged equidistantly from front to back are fixedly arranged on the lower end surface of the flush strip, and the installation rods are slidably installed on the corresponding abutting frame.

[0015] An accommodation groove corresponding to the installation rod is formed in the upper end surface of the abutting frame, a plurality of compensation rings are accommodated in the accommodation groove and are stacked on the installation rod, a certain number of compensation rings are accommodated to raise the flush strip so that the flush strip is flush with the casting.

[0016] According to an advantageous embodiment, Z-shaped locking frames are fixedly arranged on the front and rear sides of the abutting frame, the left and right locking frames are symmetrical to each other, and the left locking frame is inclined leftward from top to bottom away from the upper end surface of the transverse section of the corresponding abutting frame.

[0017] The locking screw rod is sleeved with two L-shaped mounting frames symmetrical to each other, the corresponding two sliding blocks are located between the two mounting frames, locking blocks are fixedly arranged on the opposite surfaces of the mounting frame, and the lower end surfaces of the locking blocks are matched with the inclined surfaces of the corresponding locking frames.

[0018] After the nut is tightened, the sliding blocks, the locking frames, the locking blocks and the mounting frames are locked.

[0019] According to an advantageous embodiment, the guide unit comprises an outer housing, the outer housing is fixedly arranged on the upper side of the rack, a plurality of lifting frames equidistantly arranged from left to right are slidably arranged on the front and rear sides of the outer housing, and the sand belt is arranged between the front and rear opposite lifting frames.

[0020] The opposite faces of the two lifting frames are fixedly provided with guide columns with axis extending from top to bottom through mounting blocks.

[0021] According to an advantageous embodiment, a distance ring is sleeved on the guide column and slides up and down, and the distance ring is locked by bolt locking after adjusting the up and down position of the distance ring on the guide column.

[0022] According to an advantageous embodiment, the lower end face of the mounting block is fixedly provided with a receiver, the front end face of the front right sliding block is fixedly provided with a transmitter one through a rectangular plate, and the transmitter one is opposite to the right flush strip and the middle position of the casting in front and back.

[0023] When the receiver moves directly above the transmitter one, the signal emitted by the transmitter one is received by the receiver and controls the up and down position of the corresponding sand belt through the control circuit.

[0024] According to an advantageous embodiment, the front end face of the front left sliding block is fixedly provided with a transmitter two through a rectangular plate, and the transmitter two is opposite to the left flush strip in front and back.

[0025] When the receiver moves directly above the transmitter two, the signal emitted by the transmitter two is received by the receiver and controls the up and down position of the corresponding sand belt through the control circuit.

[0026] According to an advantageous embodiment, in addition to the two rightmost lifting frames, the two lifting frames opposite to each other are rotatably provided with auxiliary pressure rollers with axis extending front and back through L-shaped frames, and the lowest part of the auxiliary pressure roller is flush with the lower end of the corresponding sand belt.

[0027] The circumferential face of the auxiliary pressure roller is fixedly provided with a cleaning brush in a spiral shape.

[0028] In summary, the present application has at least one of the following beneficial effects: first, by making the left and right flush strips and the casting be at the same height, the left and right ends of the casting are protected, and the problem of excessive polishing of the two ends of the casting caused by the partial wrapping of the two ends of the casting by the flexible sand belt is alleviated, thereby forming an excessively large round corner and ultimately affecting the appearance of the casting. In addition, by raising the sand belt to avoid the casting, the contact duration of the two sides with the sand belt is reduced while ensuring sufficient polishing, and the problem of excessive polishing of the two ends of the casting affecting the appearance and size is avoided under the double protection of the above-mentioned flush strips.

[0029] Secondly, in the present application, the casting is clamped and locked by the two abutting frames, and the auxiliary pressing effect of the auxiliary pressure roller is used to avoid the safety problem of the casting flying out caused by the shearing force of the high-speed rotating sand belt on the casting when the casting is separated from the contact with the sand belt. At the same time, the stability of the casting during polishing is improved, and the polishing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0031] Figure 1 A perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0032] Figure 2 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0033] Figure 3 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0034] Figure 4 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0035] Figure 5 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0036] Figure 6 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0037] Figure 7 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0038] Figure 8 A partial perspective structural schematic diagram of an automatic deburring equipment for aluminum die castings is shown according to an embodiment of the present application.

[0039] Wherein, the above-mentioned drawings include the following reference signs: 1, conveying belt; 2, rack; 3, polishing mechanism; 30, polishing unit; 300, abrasive belt; 31, sliding rail; 32, abutting frame; 33, compensation group; 330, flush strip; 331, mounting rod; 332, placing groove; 333, compensation ring; 334, locking frame; 335, mounting frame; 336, locking block; 34, sliding block; 340, locking screw; 40, guiding unit; 400, outer shell; 401, lifting frame; 402, guide column; 403, butt joint seat; 404, distance ring; 405, receiver; 406, transmitter one; 407, transmitter two; 41, auxiliary compression roller; 410, cleaning brush. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] As shown in Figure 1 and Figure 2 , an automatic deburring equipment for aluminum die castings comprises a conveying assembly, the conveying assembly comprising a conveying belt 1 and a rack 2, and a polishing mechanism 3 arranged above the rack 2.

[0042] The polishing mechanism 3 comprises a polishing unit 30, and the polishing unit 30 is fixedly arranged on the rack 2 above the upper side of the conveying belt 1, and the polishing unit 30 comprises a plurality of abrasive belts 300 arranged equidistantly from left to right and gradually increasing in mesh from right to left.

[0043] As shown in Figure 1 , Figure 2 and Figure 3 , the rack 2 is fixedly provided with two front and rear symmetrical sliding rails 31, and two left and right abutting frames 32 are arranged between the two sliding rails 31, and the left abutting frame 32 is fixedly connected with the conveying belt 1, and the castings between the two abutting frames 32 are clamped and locked by locking the two abutting frames 32.

[0044] As shown in Figure 3 , the abutting frame 32 is provided with a compensation group 33, and the compensation group 33 comprises a flush strip 330, and the flush strip 330 is arranged above the abutting frame 32, and before the two abutting frames 32 are locked and clamped, the flush strip 330 is adjusted so that the flush strip 330 is flush with the height of the castings, and then locked, and the two flush strips 330 respectively wrap and protect the left and right sides of the workpiece.

[0045] AsFigure 1 and Figure 2 As shown in the figure, the frame 2 is provided with a guide unit 40 for guiding the downward movement of the abrasive belt 300 and controlling the upward movement of the abrasive belt 300 to avoid the abrasive belt 300. After moving to the lower side of the casting to complete the polishing, the guide unit 40 controls the upward movement of the abrasive belt 300.

[0046] It should be noted that the conveying belt 1 is driven by an external existing motor in the conveying assembly, which controls the conveying process of the conveying belt 1. The upper end of the conveying belt 1 is maintained flat to provide stable support for the casting placed thereon, ensuring that the subsequent deburring operation process is not affected by the collapse of the conveying belt 1. The abrasive belt 300 is driven to rotate by an external drive motor for polishing. The above description is an external prior art, which will not be described in detail.

[0047] When working, in the initial state, the left and right two abutting frames 32 are located in the right area. The casting that needs to be polished is placed on the conveying belt 1 by artificial, and the casting is located between the two abutting frames 32. Then the flat strip 330 is installed and the height of the flat strip 330 is adjusted so that the height of the flat strip 330 is consistent with the height of the casting. At this time, the two abutting frames 32 are locked, and the height of the flat strip 330 is also locked.

[0048] Then the conveying belt 1 drives the abutting frame 32, the casting and the flat strip 330 to move left synchronously. The abrasive belt 300 is driven to rotate by an external drive motor. At the same time, the guide unit 40 works. When the casting passes under each abrasive belt 300 from right to left, the upper surface of the casting is deburred and polished. During the polishing process, it needs to be explained additionally that, referring to Figure 8 By adjusting the height of the flat strip 330 to be equal to the height of the casting, the left and right ends of the casting are protected, and the problem that the left and right ends of the casting are excessively polished due to the flexible nature of the abrasive belt 300, which causes the left and right ends of the casting to be partially wrapped, resulting in excessive rounding of the left and right ends of the casting and ultimately affecting the appearance of the casting.

[0049] In addition, the guide unit 40 not only guides the downward movement of the abrasive belt 300 for polishing, but also improves the stability of the polishing after moving downward. When the abrasive belt 300 moves to the right end of the casting and completes the polishing of the casting, the abrasive belt 300 is controlled to move upward by the guide unit 40 to avoid the side of the casting. Through the above-mentioned way, the protection effect of the flat strip 330 is achieved, which reduces the excessive polishing of the left and right ends of the casting, and also reduces the wear of the flat strip 330 caused by the contact between the abrasive belt 300 and the flat strip 330 after polishing.

[0050] After completing the deburring and polishing, the conveying belt 1 drives the casting to move right to reset, and the polished casting is taken out. During this process, the abrasive belt avoids the casting and does not contact the casting.

[0051] AsFigure 3 As shown, two sliding blocks 34 are arranged in the slide rail 31 and slide left and right, and the abutting frame 32 is fixedly connected between the corresponding front and rear two sliding blocks 34.

[0052] As shown, Figure 3 and Figure 4 As shown, the axis extending from left to right of the locking screw 340 is installed between the corresponding two abutting frames 32 on the left and right through the movable penetration, and the nut is threadedly installed on the locking screw 340 and located on the right side of the right abutting frame 32.

[0053] The two abutting frames 32 are locked by tightening the nut, and the left abutting frame 32 and the sliding block 34 are driven to move left by the conveyor belt 1, and the right abutting frame 32 and the sliding block 34 are simultaneously moved.

[0054] In the initial state, the two abutting frames 32 and the sliding block 34 are located on the right side of the sand belt 300, the distance between the left and right two sliding blocks 34 is adjusted manually, and then the castings to be polished are placed on the conveyor belt 1, and the left end surface of the castings abuts against the right end surface of the left abutting frame 32, the right sliding block 34 is adjusted so that the left end surface of the right abutting frame 32 abuts against the castings, then the height of the flush strip 330 is adjusted so that the flush strip 330 is flush with the castings, and finally the two nuts are tightened manually. At this time, the castings are clamped and locked by locking the two abutting frames 32, which avoids the safety problem that the castings fly out due to the shearing force generated by the high-speed rotation of the sand belt 300 when the castings are separated from the contact with the sand belt 300, and increases the stability of the castings during polishing, and improves the polishing effect.

[0055] As shown, Figure 3 , Figure 4 and Figure 5 As shown, the compensation group 33 further comprises a mounting rod 331, and a plurality of mounting rods 331 are arranged equidistantly from front to back and vertically on the lower end surface of the flush strip 330, and the mounting rod 331 is slidably installed on the corresponding abutting frame 32.

[0056] The upper end surface of the abutting frame 32 is provided with a placing groove 332 corresponding to the mounting rod 331, and a plurality of compensation rings 333 are placed in the placing groove 332 and are stacked on the mounting rod 331.

[0057] As shown, Figure 3 , Figure 4 and Figure 5 As shown, the abutting frame 32 is fixedly provided with a Z-shaped locking frame 334 on the front and rear sides, and the left and right two locking frames 334 are symmetrical to each other, and the left locking frame 334 is inclined leftward from top to bottom away from the upper end surface of the transverse section of the corresponding abutting frame 32.

[0058] The locking screw 340 is sleeved with two left-right symmetrical L-shaped mounting frames 335, the two sliding blocks 34 are located between the two mounting frames 335, and the opposite surfaces of the mounting frames 335 are fixedly provided with locking blocks 336, and the lower end surfaces of the locking blocks 336 are matched with the inclined surfaces of the corresponding locking frames 334.

[0059] During work, after the two abutting frames 32 abut against 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 grooves 332, then the flush strip 330 is installed by inserting the mounting rod 331 manually, and the mounting rod 331 penetrates through the corresponding compensation ring 333, so that the height of the flush strip 330 is equal to the height of the casting due to the height compensation of the compensation ring 333.

[0060] Then the nut is tightened on the locking screw 340, and during the tightening process, the nut extrudes the adjacent mounting frame 335, and the left side end of the locking screw 340 extrudes the adjacent mounting frame 335, so that the two mounting frames 335 on the same locking screw 340 are close to each other, and the mounting frame 335 drives the synchronous movement of the locking block 336 thereon, after the inclined surface of the locking block 336 is matched with the inclined surface of the locking frame 334, with the continuous extrusion of the mounting frame 335, the locking block 336 has a downward force on the locking frame 334, that is, indirectly on the flush strip 330, so that the locking block 336 and the mounting frame 335 cannot continue to move, the nut is tightened, and finally the flush strip 330, the locking block 336, the mounting frame 335, the sliding block 34 and the abutting frame 32 are locked.

[0061] It should be noted that the above-mentioned compensation ring 333 is used to compensate the height, which is suitable for the polishing process of castings with different thicknesses, and improves the universality of the equipment. In addition, the tightening action of the front and rear nuts simultaneously completes the abutting and clamping process of the two abutting frames 32 and the locking process of the flush strip 330, which improves the convenience of the equipment during operation.

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

[0063] As shown in Figure 2 and Figure 6As shown, the opposite faces of the two front and rear lifting frames 401 are fixedly provided with guide columns 402 extending from top to bottom along the axis through mounting blocks, and the rack 2 is fixedly provided with butt joints 403 corresponding to the guide columns 402, and the upper end of each butt joint 403 is provided with a guide groove penetrating downward.

[0064] As shown in Figure 2 and Figure 6 As shown, the guide column 402 is slidably sleeved with a fixed distance ring 404, and the fixed distance ring 404 is locked by bolt locking after adjusting the up and down position of the fixed distance ring 404 on the guide column 402.

[0065] As shown in Figure 4 and Figure 6 As shown, the lower end of the mounting block is fixedly provided with a receiver 405, and the front end of the front right sliding block 34 is fixedly provided with a transmitter one 406 through a rectangular plate, and the transmitter one 406 is opposite to the right side flush strip 330 and the middle position of the casting in front and back, so as to ensure that the sand belt 300 has completed the polishing of the upper end face of the casting when avoiding upward movement.

[0066] When the receiver 405 moves to the upper side of the transmitter one 406, the signal emitted by the transmitter one 406 is received by the receiver 405 and the working condition of the corresponding external hydraulic cylinder is controlled through the control circuit.

[0067] As shown in Figure 4 and Figure 6 As shown, the front end of the front and rear left sliding block 34 is fixedly provided with a transmitter two 407 through a rectangular plate, and the transmitter two 407 is opposite to the left side flush strip 330 in front and back, so as to ensure that the sand belt 300 can move to a set height before contacting the casting.

[0068] When the receiver 405 moves to the upper side of the transmitter two 407, the signal emitted by the transmitter two 407 is received by the receiver 405 and the working condition of the corresponding external hydraulic cylinder is controlled through the control circuit.

[0069] When the receiver 405 moves to the upper side of the transmitter two 407, the signal emitted by the transmitter two 407 is received by the receiver 405 and the working condition of the corresponding external hydraulic cylinder is controlled through the control circuit.

[0070] At this time, it needs to be pointed out that the guide column 402 penetrates through the corresponding guide groove, and guides and limits the downward movement of the abrasive belt 300, ensures the accuracy of the downward polishing, avoids the influence of the upward and downward movement of the abrasive belt 300 on the polishing accuracy, and adjusts the distance between the abrasive belt 300 and the upper side of the conveying belt 1 after the downward movement according to the known thickness of the casting and the polishing requirement, so that the distance is adapted to the polishing requirement of the corresponding casting, and the distance ring 404 is manually adjusted to the above-mentioned set adaptation position, and the distance ring 404 is locked by the bolt, so that the distance ring 404 is driven by the guide column 402 to move downward synchronously during the downward movement of the lifting frame 401, and the distance ring 404 is in contact with the butt joint seat 403 to prevent the guide column 402 and the lifting frame 401 from continuing to move downward, thereby strictly controlling the downward movement height of the abrasive belt 300 driven by the lifting frame 401, and avoiding the problem of excessive polishing. Secondly, the locking process of the distance ring 404 can be replaced by a technical solution that has a locking effect on the distance ring 404, which can be selected and used by persons skilled in the art according to the adaptation situation, and the position of the distance ring 404 remains unchanged after locking.

[0071] The external driving motor works to make the abrasive belt 300 rotate, and as the conveying belt 1 continuously drives the casting to move left, the abrasive belt 300 rotates to polish the upper surface of the casting, and then the right sliding block 34 drives the transmitter one 406 thereon to gradually move to the lower side of the receiver 405, at which time the polishing process of the upper surface of the casting has been completed. The signal emitted by the transmitter one 406 is received by the receiver 405 and also fed back to the control circuit, and the control circuit controls the external hydraulic cylinder to work to make the lifting frame 401 drive the abrasive belt 300 to quickly move upward, thereby avoiding the problem that the both ends of the casting are excessively polished to form a large round corner due to the flexible nature of the abrasive belt 300 itself, and also protecting the flat strip 330, thereby avoiding the problem that the flat strip 330 is excessively worn to affect the service life and use precision.

[0072] The polishing process of the casting is repeated by the abrasive belt 300 from right to left, and the above-mentioned operation process is repeated. In summary, through the double protection of the adhesion protection of the both sides of the flat strip 330 and the upward movement of the abrasive belt 300 to avoid the problem, the problem that the both sides of the casting are excessively polished due to the flexible nature of the abrasive belt 300 itself is reduced, and the transmitter one 406, the transmitter two 407, the receiver 405 and the control circuit are all external prior art, which will not be described in detail here.

[0073] As shown in Figure 7 In addition to the two lifting frames 401 on the right side, the two lifting frames 401 opposite to each other are provided with an auxiliary pressure roller 41 extending in the axis direction through the L-shaped frame rotationally arranged. The lowest part of the auxiliary pressure roller 41 is flush with the lower end of the corresponding abrasive belt 300, and the auxiliary pressure roller 41 is driven by an external motor (not shown in the figure).

[0074] The circumferential surface of the auxiliary pressure roller 41 is fixedly provided with a cleaning brush 410 in a spiral shape.

[0075] When working, the auxiliary pressure roller 41 on the lifting frame 401 moves up and down, and the lifting frame 401 drives the auxiliary pressure roller 41 to move down to a set height synchronously. During the movement and polishing of the casting, the auxiliary pressure roller 41 adheres to the upper end of the casting, and assists in limiting the casting to avoid the problem that the shear force generated when the sand belt 300 rotates at high speed polishes affects the position of the casting, thereby improving the stability during polishing. In addition, the external motor drives the auxiliary pressure roller 41 to rotate synchronously, and the cleaning brush 410 on the auxiliary pressure roller 41 cleans the debris generated on the surface of the casting during rotation, and at the same time, the spiral guide discharges the debris from the surface of the casting, thereby avoiding the influence of the debris on the subsequent polishing process and improving the polishing quality.

[0076] It should be additionally pointed out that, compared with the existing technology of directly placing the casting into the sand belt polisher for deburring, the present application adds the flush strip 330 and the guide unit 40. The flush strip 330 adheres to the two sides of the casting to not only have a locking and clamping effect on the two sides of the casting but also protect the two sides of the casting. The guide unit 40 guides the up and down movement of the sand belt 300, which not only increases the polishing stability but also ensures complete deburring and avoids affecting the normal size of the casting due to excessive polishing of the sand belt to form an excessively large round corner. In addition, the above-mentioned protection by the flush strip 330 and the avoiding action during the guiding process can reduce the wear of the flush strip 330. The above-mentioned components are common mechanical parts, which can be used for multiple times after single installation. Compared with the economic benefits of protecting the size specifications of the two sides of the casting, the cost of adding the above-mentioned components is negligible. In summary, the technical solution is a specific improvement based on the above-mentioned existing technical conditions and solving the technical problems.

[0077] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description. Without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0078] In addition, the terms "first", "second", "one", "two" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of indicated technical features. Therefore, the features defined with "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0079] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic deburring apparatus for aluminum die castings, characterized by, The utility model relates to a sand belt grinding device for castings, including: The conveying assembly for conveying the castings includes a conveying belt and a rack, and a grinding mechanism is arranged above the rack; The grinding mechanism includes a grinding unit, and the grinding unit is fixedly arranged on the upper side of the conveying belt and includes a plurality of abrasive belts arranged equidistantly from left to right and gradually increasing in mesh from right to left, all of which sequentially grind the upper surface of the castings from right to left; Two front-to-back symmetrically distributed sliding rails are fixedly arranged on the rack, and two left-to-right distributed abutting frames are arranged between the two sliding rails, the left abutting frame is fixedly connected with the conveying belt, and the castings between the two abutting frames are clamped and locked by locking the two abutting frames; A compensation group is arranged on the abutting frame, the compensation group includes flush strips, and the flush strips are installed above the abutting frame; The abutting frame is provided with a guide unit for guiding the downward movement of the sand belt for grinding and controlling the upward movement of the sand belt for avoiding; With the left and right two flush strips fitting and wrapping the left and right sides of the castings, the guide unit controls the upward movement of the sand belt for avoiding the castings and the flush strips, and the double effects are cooperated to complete the protection process of the left and right two sides of the castings in the deburring operation; The compensation group further includes mounting rods, a plurality of mounting rods with vertical shafts are fixedly arranged on the lower end surface of the flush strip equidistantly from front to back, and the mounting rods are slidably installed on the corresponding abutting frame; The upper end surface of the abutting frame is provided with a placing groove corresponding to the mounting rod, and a plurality of compensation rings are placed in the placing groove and are sleeved on the mounting rod in a stacked manner; 2. The automatic burring apparatus for aluminum die castings according to claim 1, characterized in that: The two sliding blocks are slidably arranged in the sliding rail, and the abutting frame is fixedly connected with the corresponding front and rear two sliding blocks; The two abutting frames correspond to each other and are provided with an axis extending from left to right, and the locking screw is threadedly installed on the right side of the right abutting frame.

3. The automatic burring apparatus for aluminum die castings according to claim 2, characterized in that: The front and rear sides of the abutting frame are fixedly provided with Z-shaped locking frames, the left and right two locking frames are mutually symmetrical, and the upper end surface of the transverse section of the left locking frame away from the corresponding abutting frame is inclined from top to bottom to the left; The locking screw is sleeved with two left and right symmetrical L-shaped mounting frames, the corresponding two sliding blocks are located between the two mounting frames, the opposite surfaces of the mounting frames are fixedly provided with locking blocks, and the lower end surfaces of the locking blocks are matched with the inclined surfaces of the corresponding locking frames; When the nut is tightened, the sliding blocks, the locking frames, the locking blocks and the mounting frames are locked.

4. The automatic burring apparatus for aluminum die castings according to claim 1, characterized in that: The guide unit includes an outer shell, the outer shell is fixedly arranged on the upper side of the rack, a plurality of lifting frames equidistantly arranged from left to right are slidably arranged on the front and rear sides of the outer shell, and the sand belt is arranged between the front and rear two lifting frames opposite to each other; The opposite surfaces of the two lifting frames opposite to each other are fixedly provided with guide columns with axes extending from top to bottom through mounting blocks, and the rack is fixedly provided with butt joints corresponding to the guide columns, and the upper end surface of the butt joint penetrates downward to form a guide groove.

5. The automatic deburring apparatus for aluminum die castings according to claim 4, characterized in that: ​ 6. The automatic deburring apparatus for aluminum die castings according to claim 4, characterized in that: The lower end surface of the mounting block is fixedly provided with a receiver, the front end surface of the front right sliding block is fixedly provided with a transmitter one through a rectangular plate, and the transmitter one is opposite to the right flush strip and the middle position of the casting in front and back; When the receiver moves to the position directly above the transmitter one, the signal emitted by the transmitter one is received by the receiver and controls the up and down position of the corresponding sand belt through the control circuit.

7. The automatic deburring apparatus for aluminum die castings according to claim 6, characterized in that: The front end surface of the front and back left sliding block is fixedly provided with a transmitter two through a rectangular plate, and the transmitter two is opposite to the left flush strip in front and back; When the receiver moves to the position directly above the transmitter two, the signal emitted by the transmitter two is received by the receiver and controls the up and down position of the corresponding sand belt through the control circuit.

8. The automatic burring apparatus for aluminum die castings according to claim 4, characterized in that: The axis of the auxiliary compression roller extending in front and back is rotatably arranged between the two lifting frames opposite to each other except the two rightmost lifting frames through an L-shaped frame, and the lowest part of the auxiliary compression roller is flush with the lower end of the corresponding sand belt. The circumferential surface of the auxiliary compression roller is fixedly provided with a cleaning brush in a spiral shape.

Images