Automatic material head removing tool for zinc alloy round pressure casting

Abstract

The application relates to the technical field of metal piece processing, and discloses an automatic material head removing tool for zinc alloy circular pressure castings, which comprises a seat body, an edge of which is integrally formed with a vertical plate; a feeding frame which is slidably arranged at the rear end of the vertical plate and is driven by a driving mechanism, a plurality of loading plates are equidistantly fixed on the front side of the feeding frame, a positioning material groove is formed in each loading plate, and a through hole is formed in the bottom surface of the positioning material groove; an ultrasonic cutting knife which is arranged directly above the moving path of the feeding frame, is driven to rotate by a motor, and is driven to lift by an electric push rod 1; a material pushing mechanism which is arranged on one side of the ultrasonic cutting knife and comprises a lower push rod and an upper push rod, the lower push rod is driven to lift by an electric push rod 2, and the upper push rod is driven to move back and forth by an electric push rod 3; and a material guiding mechanism which comprises a conveying belt and a material guiding inclined plate, the conveying belt is arranged on the inner side of the vertical plate, and the material guiding inclined plate is fixedly arranged above the conveying belt on the inner side of the vertical plate. The application has the advantages that the zinc alloy circular pressure castings with material heads in the inner circle can be uniformly processed, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of metal parts processing technology, specifically to an automatic head-removal tooling for zinc alloy circular die-cast parts. Background Technology

[0002] Zinc alloy circular die castings are various circular metal fittings manufactured using zinc alloy as raw material and a high-pressure die casting process. After the zinc alloy melts, it is injected at high speed and pressure into a circular mold cavity. Upon cooling and demolding, it forms a single piece of workpiece such as a disc, cover, sleeve, or base. It can directly create composite structures such as steps, holes, and slots without extensive secondary machining. The products have high dimensional accuracy, a smooth and flat surface, good toughness, and are not prone to rust. They can be mass-produced quickly at low cost. After forming, surface treatments such as electroplating and painting can be applied to enhance corrosion resistance and decorative effects. They are widely used in lighting fixtures, locks, bathroom fixtures, electronic components, and small hardware connectors.

[0003] Circular zinc alloy die-cast parts with a central hole are prone to developing sprue defects after die casting, often resulting in protruding sprue at the hole location. Currently, the industry commonly uses ultrasonic cutters to remove this sprue. While this method ensures a clean cut and minimizes damage to the workpiece, making it suitable for small-part precision trimming, it is only appropriate for small-batch production. In large-scale continuous production, this process becomes significantly less efficient, requiring long processing times, manual positioning and cutting of each part, and hindering automated continuous operation, resulting in low overall processing efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an automatic head removal fixture for zinc alloy circular die castings that can uniformly process zinc alloy circular die castings with material heads on the inner ring, thereby improving work efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this invention is: an automatic descrambling tool for zinc alloy circular die castings, comprising: The base has vertical plates integrally formed on both sides and the rear. The feeding rack is slidably disposed on the inner rear end of the vertical plate and is driven to move laterally by a driving mechanism fixed on the rear wall of the vertical plate. Several carrier plates are fixedly disposed at equal intervals on the front side. The carrier plates are provided with positioning grooves. The bottom surface of the positioning grooves is provided with through holes that are coaxial with the aluminum alloy circular die casting and have an inner diameter larger than that of the aluminum alloy circular die casting. An ultrasonic cutting blade is positioned directly above the moving path of the feeding rack. It is driven by a motor to rotate along a ring-shaped path that fits the inner wall of the aluminum alloy circular die-cast part. The motor is driven to move up and down by an electric push rod fixed on the vertical plate. The material pushing mechanism is located on one side of the ultrasonic cutting blade. The distance between the mechanism and the ultrasonic cutting blade is the same as the distance between the carrier plate. It includes a lower push rod and an upper push rod. The lower push rod is driven to move up and down by an electric push rod two fixed on the vertical plate. A push head is fixedly provided at its upper end. The diameter of the push head is larger than the inner diameter of the aluminum alloy circular die-casting part and smaller than the inner diameter of the through hole. The upper push rod is located directly above the lower push rod and is driven to move back and forth by an electric push rod three fixed on the vertical plate. A push plate is integrally formed at its lower end. The material guiding mechanism includes a conveyor belt and a guide ramp. The conveyor belt is located inside the vertical plate and extends out of the vertical plate at both ends. The vertical plate is provided with a feeding port that matches the conveyor belt. The guide ramp is fixedly located above the conveyor belt on the inner side of the vertical plate.

[0006] Furthermore, anti-slip feet are fixed at the four corners of the bottom surface of the seat.

[0007] Furthermore, the feeder has an H-shaped cross-section, and the vertical plate has a sliding groove for the feeder to slide in the middle.

[0008] Furthermore, the driving mechanism includes a gear and a rack. The rack is fixedly mounted on the rear side of the feeding frame, and the gear is located on the rear side of the rack and meshes with the rack. It is driven to rotate by a stepper motor fixed on the vertical plate. The step angle of the stepper motor matches the spacing between the carrier plates.

[0009] Furthermore, a support plate for fixing an electric push rod is fixedly provided on the vertical plate.

[0010] Furthermore, the front side of the pusher plate is provided with an arc-shaped groove adapted to the circular die-cast aluminum alloy part.

[0011] Furthermore, a chip removal gap is formed between the rear side of the guide plate and the vertical plate.

[0012] Compared with existing technologies, the advantages of this invention are as follows: the tooling relies on a stepper motor and rack and pinion structure to achieve precise stepping feeding, and with the H-type sliding feeding architecture, it effectively avoids workpiece conveying deviation problems, ensures precise workpiece alignment, and minimizes positioning errors, providing accuracy assurance for uniform material removal. At the same time, it utilizes ultrasonic cutting technology, retaining the advantages of clean cuts and no damage to the workpiece, ensuring product processing quality.

[0013] The tooling integrates a feeding, guiding, and chip removal structure with precisely matched spacing between each station, enabling continuous automated operation of feeding, cutting, pushing, and chip removal. This eliminates the need for manual, piece-by-piece positioning and cutting, significantly reducing processing time per piece. Furthermore, the tooling's overall structural stability is strong, mitigating displacement deviations caused by equipment vibration and promptly removing cutting debris to prevent impurities from affecting processing. This ensures continuous and stable equipment operation, significantly improving batch processing efficiency and finished product qualification rate. Attached Figure Description

[0014] Figure 1 This is the three-dimensional representation of the present invention. Figure 1 ; Figure 2 This is the three-dimensional representation of the present invention. Figure 2 ; Figure 3 This is a top view of the present invention; Figure 4 This is the front view of the present invention; Figure 5 This is a side view of the present invention.

[0015] As shown in the figure: 1. Base; 2. Vertical plate; 3. Feeding rack; 4. Carrier plate; 5. Positioning groove; 6. Through hole; 7. Ultrasonic cutting blade; 8. Motor; 9. Electric push rod one; 10. Lower push rod; 11. Upper push rod; 12. Electric push rod two; 13. Push head; 14. Electric push rod three; 15. Push plate; 16. Conveyor belt; 17. Guide plate; 18. Anti-slip foot; 19. Slide groove; 20. Gear; 21. Rack; 22. Stepper motor; 23. Support plate. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 4 An automatic tooling for removing blanks from zinc alloy circular die-cast parts includes: a base 1, with vertical plates 2 integrally formed on both sides and the rear side; and anti-slip feet 18 fixed at the four corners of the bottom surface of the base 1, which can effectively increase the friction between the tooling and the placement table. This can prevent the tooling from shifting due to equipment vibration during operation and ensure the overall processing stability.

[0018] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 The feeding rack 3 is slidably mounted on the inner rear end of the vertical plate 2. The feeding rack 3 has an H-shaped cross-section, and the vertical plate 2 has a sliding groove 19 for the middle of the feeding rack 3 to slide. The sliding fit structure between the H-shaped cross-section feeding rack 3 and the sliding groove 19 of the vertical plate 2 can limit the shaking and displacement of the feeding rack. This effectively improves the smoothness and accuracy of the lateral movement of the feeding rack 3 and ensures the workpiece alignment accuracy.

[0019] Combined with appendix Figure 2 Appendix Figure 3 Appendix Figure 5The feeding rack 3 is driven to move laterally by a drive mechanism fixed on the rear wall of the vertical plate 2. Several carrier plates 4 are fixedly arranged at equal intervals on the front side. The carrier plates 4 have positioning grooves 5. The bottom surface of the positioning grooves 5 has through holes 6 that are coaxial with the aluminum alloy circular die-casting parts and have an inner diameter larger than the aluminum alloy circular die-casting parts. The drive mechanism includes a gear 20 and a rack 21. The rack 21 is fixed on the rear side of the feeding rack 3. The gear 20 is located on the rear side of the rack 21 and meshes with the rack 21. It is driven to rotate by a stepper motor 22 fixed on the vertical plate 2. The step angle of the stepper motor 22 matches the spacing of the carrier plates 4, which can realize precise step feeding of the feeding rack 3 with small positioning error, adaptable to multi-station continuous cutting operations, and higher automation accuracy.

[0020] Combined with appendix Figure 4 The ultrasonic cutting blade 7 is located directly above the moving path of the feeding rack 3. It is driven by the motor 8 to rotate along an annular path that fits the inner wall of the aluminum alloy circular die-cast part. The motor 8 is driven to rise and fall by the electric push rod 9 fixed on the vertical plate 2. The vertical plate 2 is fixed with a support plate 23 for fixing the electric push rod 9, which can provide a stable installation support for the electric push rod 9, reduce the vibration and displacement of the electric push rod 9 during operation, and ensure the stability of the ultrasonic cutting blade 7 in raising and lowering.

[0021] Combined with appendix Figure 1 Appendix Figure 4 The material pushing mechanism is located on one side of the ultrasonic cutting blade 7, with the distance between it and the ultrasonic cutting blade 7 being the same as the distance between the carrier plate 4. It includes a lower push rod 10 and an upper push rod 11. The lower push rod 10 is driven to rise and fall by an electric push rod 12 fixed on the vertical plate 2. A push head 13 is fixedly provided at its upper end. The diameter of the push head 13 is larger than the inner diameter of the aluminum alloy circular die-casting part and smaller than the inner diameter of the through hole. The upper push rod 11 is located directly above the lower push rod 10 and is driven to move back and forth by an electric push rod 14 fixed on the vertical plate 2. A push plate 15 is integrally formed at its lower end. The front side of the push plate 15 is provided with an arc-shaped groove that adapts to the aluminum alloy circular die-casting part. It can accurately fit with the outer wall of the circular die-casting part, and the force is uniform during material pushing, which can avoid workpiece displacement and collision damage, and improve the finished product qualification rate.

[0022] Combined with appendix Figure 1 Appendix Figure 3 Appendix Figure 4 The material guiding mechanism includes a conveyor belt 16 and a guide ramp 17. The conveyor belt 16 is located inside the vertical plate 2, with both ends extending out of the vertical plate 2. The vertical plate 2 has feeding ports that match the conveyor belt 16. The guide ramp 17 is fixedly located above the conveyor belt 16 on the inner side of the vertical plate 2. A chip removal gap is formed between the rear side of the guide ramp 17 and the vertical plate 2, which facilitates the direct discharge of cutting debris and impurities, preventing debris from falling onto the material guiding mechanism and contaminating the workpiece, thus ensuring continuous and smooth operation of the tooling.

[0023] Specific implementation of the present invention: The base 1 is placed stably on the workbench using anti-slip feet 18 on the bottom surface. The anti-slip structure prevents equipment displacement caused by operational vibration, ensuring processing stability. The operator places the zinc alloy die-cast parts to be processed sequentially into the positioning grooves 5 on the carrier plate 4 of the feeding rack 3. The positioning grooves 5 and the through holes 6 are used to complete the initial positioning of the workpiece.

[0024] Connect the tooling to an external power source. The stepper motor 22 on the vertical plate 2 drives the gear 20 to mesh with the rack 21, causing the H-shaped feeder 3 to slide precisely along the slide groove 19, accurately conveying the workpiece directly below the ultrasonic cutting blade 7. At this time, the carrier plate 4 stops moving, and the electric push rod 9 on the support plate 23 drives the motor 8 and the ultrasonic cutting blade 7 to descend to fit against the inner wall of the workpiece. The motor 8 drives the cutting blade to rotate along the annular path of the workpiece's circular hole, completing the precise removal of the protruding material head in the circular hole.

[0025] After cutting, stepper motor 22 drives the feeder 3 to move another stroke, precisely moving the workpiece with the removed head directly above the pusher 13 before stopping. Electric push rod 22 drives the lower push rod 10 and pusher 13 to rise and lift the workpiece until the bottom surface of the workpiece is completely removed from the positioning groove 5. Electric push rod 34 drives the upper push rod 11 and push plate 15 to push the workpiece against the outer wall. At this time, the next workpiece is moved directly below the ultrasonic cutting blade 7, and the above cutting operation is repeated. The finally processed workpiece falls to the conveyor belt 16 under the guidance of the guide plate 17 to complete the discharge. Cutting debris falls through the gap between the guide plate 17 and the vertical plate 2. The stepper motor drives the feeder 3 to move intermittently, thus realizing the automated continuous removal of heads for batch workpieces.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; those skilled in the art can understand the specific meaning of the above term in this invention according to the specific circumstances.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic head-removal tooling for zinc alloy circular die-cast parts, characterized in that, include: The seat (1) has vertical plates (2) integrally formed on both sides and the rear side; The feeding rack (3) is slidably disposed on the inner rear end of the vertical plate (2) and is driven to move laterally by a driving mechanism fixed on the rear wall of the vertical plate (2). Several carrier plates (4) are fixedly disposed at equal intervals on the front side. The carrier plate (4) is provided with a positioning groove (5). The bottom surface of the positioning groove (5) is provided with a through hole (6) that is coaxial with the aluminum alloy circular die casting and has an inner diameter larger than that of the aluminum alloy circular die casting. The ultrasonic cutting blade (7) is located directly above the moving path of the feeding rack (3) and is driven by the motor (8) to rotate along the annular path that fits the inner wall of the aluminum alloy circular die casting. The motor (8) is driven to rise and fall by the electric push rod (9) fixed on the vertical plate (2). The material pushing mechanism is located on one side of the ultrasonic cutting blade (7), and the distance between it and the ultrasonic cutting blade (7) is the same as the distance between the carrier plate (4). It includes a lower push rod (10) and an upper push rod (11). The lower push rod (10) is driven to rise and fall by an electric push rod two (12) fixed on the vertical plate (2). A push head (13) is fixed at its upper end. The diameter of the push head (13) is larger than the inner diameter of the aluminum alloy circular die casting and smaller than the inner diameter of the through hole. The upper push rod (11) is located directly above the lower push rod (10) and is driven to move back and forth by an electric push rod three (14) fixed on the vertical plate (2). A push plate (15) is integrally formed at its lower end. The material guiding mechanism includes a conveyor belt (16) and a guide sloping plate (17). The conveyor belt (16) is located inside the vertical plate (2) and extends out of the vertical plate (2) at both ends. The vertical plate (2) is provided with a feeding port that matches the conveyor belt (16). The guide sloping plate (17) is fixedly located above the conveyor belt (16) inside the vertical plate (2).

2. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: The base (1) is fixed with anti-slip feet (18) at the four corners of its bottom surface.

3. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: The feed rack (3) has an H-shaped cross section, and the vertical plate (2) is provided with a sliding groove (19) for the feed rack (3) to slide in the middle.

4. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: The driving mechanism includes a gear (20) and a rack (21). The rack (21) is fixedly mounted on the rear side of the feeding frame (3). The gear (20) is mounted on the rear side of the rack (21) and meshes with the rack (21). It is driven to rotate by a stepper motor (22) fixed on the vertical plate (2). The step angle of the stepper motor (22) matches the spacing of the carrier plate (4).

5. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: The vertical plate (2) is fixed with a support plate (23) for fixing an electric push rod (9).

6. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: The front side of the pusher plate (15) is provided with an arc-shaped groove adapted to the circular die-cast aluminum alloy part.

7. The automatic head-removing fixture for zinc alloy circular die-cast parts according to claim 1, characterized in that: A chip removal gap is formed between the rear side of the guide plate (17) and the vertical plate (2).

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