Copper metal product die casting apparatus

Abstract

The application discloses a copper metal product die-casting forming equipment and relates to the technical field of copper product die-casting, which comprises a movable die, a fixed die and an ejection mechanism. The ejection mechanism comprises a top rod, a driving unit and a blowing unit. The top rod is arranged in a plurality of circumferential arrays relative to the movable die cavity. The top rod is in sliding connection with the movable die. The top rod is used for the ejection work of the bearing retainer casting, and the action point is the beam of the bearing retainer. The driving unit is used for driving the top rod to move. The blowing unit is arranged at one end of the top rod close to the movable die and can blow air into the movable die cavity, which is helpful for the separation of the bearing retainer pocket hole and the movable die cavity. The application can reduce the tensile injury and deformation of the pocket hole and improve the yield of the retainer.

Description

Technical Field

[0001] This invention relates to the field of copper product die casting technology, specifically to a copper metal product die casting molding equipment. Background Technology

[0002] Copper alloy solid cages are typically manufactured using a die-casting process; such as Figure 1 As shown, the wall thickness of the cage pocket region y is thinner than the wall thickness of the beam region connecting the pocket y. The thinner pocket region reduces friction and ensures smooth ball rolling, while the thicker beam region provides structural strength to resist deformation and fracture. Due to the more complex structure and thinner wall thickness of the cage pocket region, the molten metal in the pocket region cools and solidifies faster and shrinks earlier. This causes the metal in the pocket region to tightly wrap around the mold cavity when it shrinks, increasing the resistance during demolding. Applying ejection force to the pocket region can also easily cause deformation of the pocket. Therefore, in cage die-casting molds, the ejection mechanism usually acts on the thicker beam region. When the ejection mechanism applies ejection force to the beam region, it can easily cause tearing of the pocket, increasing the defect rate of the cage. Summary of the Invention

[0003] The purpose of this invention is to provide a die-casting molding equipment for copper metal products to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a die-casting molding equipment for copper metal products, comprising a moving mold, a fixed mold, and an ejection mechanism; the ejection mechanism includes ejector rods, a drive unit, and an air blowing unit; the ejector rods are arranged in a circumferential array about the moving mold cavity; the ejector rods are slidably connected to the moving mold; the ejector rods are used for ejecting the bearing cage casting, and the point of action is the beam of the bearing cage; the drive unit is used to drive the ejector rods to move; the air blowing unit is located at one end of the ejector rod near the moving mold and can blow air into the moving mold cavity, which helps the bearing cage pocket to separate from the moving mold cavity.

[0005] As a further embodiment of the present invention, the air blowing unit includes an air outlet pipe, a tee, and an air inlet pipe; the air outlet pipes are arranged in two symmetrical configurations; the tee is used to connect the two air outlet pipes and the air inlet pipe; the air inlet pipe is located inside the top rod and extends to the outside of the top rod from the end away from the tee.

[0006] As a further embodiment of the present invention, the air outlet pipe is configured as a flexible hose.

[0007] As a further embodiment of the present invention, a fixing block is fixedly connected to one end of the air outlet pipe away from the tee, and a slider is rotatably connected to the fixing block. The slider is slidably connected to the push rod. A torsion spring for resetting is fitted on the rotating shaft of the fixing block. A driving part for driving the slider to move is provided inside the push rod.

[0008] As a further embodiment of the present invention, the driving unit includes a sliding column, which is elastically slidably connected to a top rod; two symmetrically arranged connecting rods are hinged to the side of the sliding column near the slider, and the ends of the two connecting rods away from the sliding column are respectively connected to the two sliders; a traction rope is fixedly connected to the sliding column, and the end of the traction rope away from the sliding column passes through the inner wall of the top rod and is fixedly connected to a slider; the slider is slidably connected to the top rod; a connecting rod is hinged to the slider, and a connecting rod is hinged to the end of the connecting rod away from the slider, and the end of the connecting rod away from the connecting rod is rotatably connected to the top rod.

[0009] As a further embodiment of the present invention, a sliding rod is elastically slidably connected to the inner side of the slider, and the end of the connecting rod away from the sliding column is hinged to the sliding rod; an insert rod is fixedly connected to the sliding rod, and an insertion hole is provided on the fixing block for insertion into the insert rod.

[0010] As a further embodiment of the present invention, a sealing ring is installed at the top end of the top rod.

[0011] As a further embodiment of the present invention, the driving unit includes a sliding plate and a cylinder; the sliding plate is used to fixally connect multiple push rods; the cylinder is used to drive the sliding plate to move horizontally.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This invention, through the setting of an air blowing unit, can blow high-pressure gas into the cavity inside the moving mold for pocket forming, breaking the adsorption force of the cage pocket area on the moving mold, which helps the pocket area to detach from the moving mold cavity, reducing pocket tearing and deformation, and improving the yield of the cage. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the bearing cage;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 3 This is a right-side view of the mounting position of the ejector pin on the moving mold of the present invention;

[0017] Figure 4 This is a cross-sectional schematic diagram of the top rod structure of the present invention;

[0018] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the fixing block, slider 1, and torsion spring structure of the present invention;

[0020] Figure 7This is a cross-sectional schematic diagram of the insertion rod and insertion rod structure of the present invention;

[0021] Figure 8 This is a schematic diagram of the insertion rod and its working state according to the present invention;

[0022] Figure 9 This is a schematic diagram of the first working state of the air outlet pipe of the present invention;

[0023] Figure 10 for Figure 9 Enlarged view of a section at point B in the middle;

[0024] Figure 11 This is a schematic diagram of the second working state of the air outlet pipe of the present invention;

[0025] Figure 12 for Figure 11 Enlarged view of a section at point C.

[0026] The attached figures are labeled as follows:

[0027] 1-Moving mold, 2-Fixed mold, 3-Ejector pin, 4-Air outlet pipe, 5-T-connector, 6-Air inlet pipe, 7-Fixing block, 8-Slider one, 9-Sliding column, 10-Connecting rod one, 11-Sliding rod, 12-Traction rope, 13-Slider two, 14-Connecting rod two, 15-Connecting rod three, 16-Torsion spring, 17-Insertion rod, 18-Insertion hole, 19-Slide plate, 20-Cylinder. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-12 In the attached diagram, x represents the cage beam area, y represents the cage pocket area, z represents the pocket forming area inside the moving mold 1, and p represents the beam forming area inside the moving mold 1. This invention provides a technical solution: a copper metal product die-casting molding equipment, including a moving mold 1, a fixed mold 2, and an ejection mechanism; the ejection mechanism includes ejector rods 3, a drive unit, and an air blowing unit; the ejector rods 3 are arranged in a circumferential array about the cavity of the moving mold 1; the ejector rods 3 are slidably connected to the moving mold 1; the ejector rods 3 are used for ejecting the bearing cage casting, and their point of action is the beam of the bearing cage; the drive unit is used to drive the ejector rods 3 to move; the air blowing unit is located at one end of the ejector rods 3 near the moving mold 1 and can blow air into the cavity of the moving mold 1, which helps the bearing cage pocket to separate from the cavity of the moving mold 1.

[0030] refer to Figure 1After the moving mold 1 and the fixed mold 2 are closed, molten metal is injected into the cavities of the moving mold 1 and the fixed mold 2 from the gating system on the side of the fixed mold 2. The gating system on the side of the fixed mold 2, the injection process of molten metal, and the mold holding pressure process are all mature existing technologies, which will not be described in detail here, nor are they shown in the figure. After the copper alloy cage cools and forms, the moving mold 1 moves to the left to open the mold, and the ejection mechanism starts to work. The drive unit drives the ejector rod 3 to move to the right, and the ejector rod 3 acts on the upper beam area of ​​the cage. After the ejector rod 3 moves a short distance to the right, the air blowing unit in the ejector rod 3 moves to the cavity area of ​​the moving mold 1. The air blowing unit blows high-pressure gas into the cavity of the moving mold 1 used for pocket forming, breaking the suction force of the cage pocket area on the moving mold 1, which helps the pocket area to detach from the cavity of the moving mold 1, reduces pocket tearing and deformation, and improves the yield of the cage.

[0031] Specifically, such as Figure 4 and Figure 5 As shown, the air blowing unit includes an air outlet pipe 4, a tee 5, and an air inlet pipe 6; the air outlet pipe 4 is configured as two symmetrically arranged pipes; the tee 5 is used to connect the two air outlet pipes 4 and the air inlet pipe 6; the air inlet pipe 6 is located inside the push rod 3 and extends to the outside of the push rod 3 at the end away from the tee 5.

[0032] refer to Figure 2 , Figure 9 and Figure 10 After the drive unit drives the push rod 3 to move a short distance to the right, the exhaust pipe 4 moves to the inside of the beam forming area p in the inner cavity of the moving mold 1. Since the cage casting beam area x has moved a short distance to the outside (right) but has not completely separated from the beam forming area p in the inner cavity of the moving mold 1, the cavity of the moving mold 1 (especially the channel between the beam forming area P and the pocket forming area) remains relatively closed under the action of the cage casting. The compressor (not shown in the figure) delivers high-pressure air from the intake pipe 6 through the tee 5. High-pressure air is injected through the vent pipe 4 and discharged from the port of the vent pipe 4. It enters the cavity pocket forming area of ​​the moving mold 1 through the inner beam forming area p and is blown towards the innermost side of the cage pocket area y. Under the action of the airflow, the adsorption force of the cage pocket area y on the moving mold 1 is greatly reduced, which helps the cage pocket area to detach from the cavity of the moving mold 1 and reduces pocket tearing and deformation. After the cage is detached from the moving mold 1, the high-pressure airflow can also blow out the remaining burrs, flash and other debris in the cavity of the moving mold 1, which helps to keep the mold clean.

[0033] Specifically, such as Figures 4-8 , Figure 11 and Figure 12 As shown, the air outlet pipe 4 is a flexible hose; a fixed block 7 is fixedly connected to the end of the air outlet pipe 4 away from the tee 5, and a slider 8 is rotatably connected to the fixed block 7. The slider 8 is slidably connected to the push rod 3; a torsion spring 16 for resetting is fitted on the rotating shaft of the fixed block 7; a drive unit for driving the slider 8 to move is provided inside the push rod 3.

[0034] Considering the relatively low hardness of the copper cage, the friction between it and the ejector pin 3 during the separation process after detaching from the moving mold cavity 1 can easily cause scratches on the cage. To solve this problem, this embodiment will configure the vent pipe 4 as a flexible hose, allowing it to be easily twisted and deformed. Figure 6 and Figure 7 In the state shown, the torsion spring 16 is in a torsional energy storage state (pre-tightened state). At this time, the fixing block 7 is located in the groove inside the top rod 3. Under the limiting action of the groove, the fixing block 7 cannot rotate, so the torsion spring 16 remains in a torsional state; Figure 8 In the indicated state, after the fixed block 7 moves out to the outside of the ejector pin 3, the fixed block 7 rotates under the elastic force of the torsion spring 16, and the torsion spring 16 releases energy and returns to a relaxed state; under the action of airflow, after the cage pocket area separates from the cavity of the moving mold 1, the ejector pin 3 continues to move to the right to eject the cage; at this time, the drive unit drives the two sliders 8 to move in opposite directions, and the sliders 8 drive the fixed block 7 to move outward of the ejector pin 3; after the fixed block 7 moves out to the outside of the ejector pin 3, the elastic force of the torsion spring 16 drives the fixed block 7 to rotate at a certain angle, achieving Figure 11 and Figure 12 As shown in the diagram, the vent pipe 4 rotates synchronously with the fixed block 7. At this time, the high-pressure gas blown out from the outer end of the vent pipe 4 provides an outward (right-side) thrust to the cage casting, causing the cage to tend to detach from the contact of the ejector rod 3. When the cage moves out of the cavity of the moving mold 1 and falls downward, the friction between the ejector rod 3 and the cage is greatly reduced under this thrust, and the probability of the ejector rod 3 scratching the cage is also greatly reduced.

[0035] Specifically, such as Figure 4 and Figure 5 As shown, the drive unit includes a sliding column 9, which is elastically slidably connected to the push rod 3; the sliding direction of the sliding column 9 is along the axial direction of the push rod 3; two symmetrically arranged connecting rods 10 are hinged to the side of the sliding column 9 near the slider 8, and the ends of the two connecting rods 10 away from the sliding column 9 are respectively connected to the two sliders 8; a traction rope 12 is fixedly connected to the sliding column 9, and the end of the traction rope 12 away from the sliding column 9 passes through the inner wall of the push rod 3 and is fixedly connected to a slider 2 13; slider 2 13 is slidably connected to the push rod 3; the sliding direction of slider 2 13 is along the axial direction of the push rod 3; a connecting rod 2 14 is hinged to slider 2 13, and a connecting rod 3 15 is hinged to the end of connecting rod 2 14 away from slider 2 13, and the end of connecting rod 3 15 away from connecting rod 2 14 is rotatably connected to the push rod 3.

[0036] refer to Figure 4When ejector rod 3 moves to the right, it drives fixed block 7, slider 1 8, connecting rod 3 15, and connecting rod 2 14 to move synchronously. After fixed block 7 moves into the cavity of moving mold 1, connecting rod 3 15 moves to contact the outer wall of moving mold 1. Ejector rod 3 continues to move, and connecting rod 3 15 rotates around its hinge point in direction v1 under the action of the outer wall of moving mold 1. Connecting rod 3 15 drives slider 2 13 to move in direction v2 through connecting rod 2 14. (Reference) Figure 5 The second slider 13 drives the sliding column 9 to move closer to the first slider 8 via the traction rope 12. The sliding column 9 drives the first slider 8 to move outward of the top rod 3 via the connecting rod 10. The first slider 8 drives the fixed block 7 to move outward synchronously. When the third connecting rod 15 is stored inside the top rod 3, the fixed block 7 has moved outward of the top rod 3 and rotated. At this time, the position of the third connecting rod 15 is fixed, and the fixed block 7 can also maintain a stable state.

[0037] Specifically, such as Figure 7 and Figure 8 As shown, a sliding rod 11 is elastically slidably connected to the inner side of the slider 8, and the end of the connecting rod 10 away from the sliding column 9 is hinged to the sliding rod 11; an insert rod 17 is fixedly connected to the sliding rod 11, and an insertion hole 18 is provided on the fixing block 7 that can be inserted into the insert rod 17.

[0038] When the sliding column 9 moves closer to the slider 8, the connecting rod 10 drives the sliding rod 11 to move outward; a spring for resetting is connected to one side of the sliding rod 11; at this time, the sliding rod 11 drives the slider 8 and the fixed block 7 to move outward synchronously through the spring. When the fixed block 7 moves outward to the outside of the top rod 3, the fixed block 7 rotates to... Figure 8 As shown, slider 8 has moved to its furthest position outwards, at which point slider 8 stops moving outwards; Reference Figure 8 As the slide column 9 continues to move upward, the connecting rod 10 drives the slide rod 11 to move inward toward the slider 8. The slide rod 11 drives the insertion rod 17 to insert into the insertion hole 18. The insertion rod 17 cooperates with the insertion hole 18 to limit the fixed block 7, preventing the fixed block 7 from shaking under the action of airflow. The air outlet pipe 4 stably provides thrust to the cage.

[0039] Specifically, a sealing ring is installed at the top of the ejector rod 3; the sealing ring is used to seal the gap between the ejector rod 3 and the moving mold 1 caused by machining errors, and the sealing ring is resistant to high temperature; the setting of the sealing ring reduces the leakage of molten metal.

[0040] Specifically, such as Figure 2 As shown, the drive unit includes a slide plate 19 and a cylinder 20; the slide plate 19 is used to fix and connect multiple push rods 3; the cylinder 20 is used to drive the slide plate 19 to move horizontally; the extension and retraction of the cylinder 20 can drive the slide plate 19 to move the push rods 3 left and right.

[0041] The elastic sliding connection (installation) mentioned above refers to a structure in which parts can automatically return to their original position after sliding, including but not limited to the spring structure shown in the figure.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-casting molding equipment for copper metal products, comprising a moving mold (1), a fixed mold (2), and an ejection mechanism; characterized in that: The ejection mechanism includes ejector rods (3), a drive unit, and an air blowing unit; the ejector rods (3) are arranged in a circumferential array about the cavity of the moving mold (1); the ejector rods (3) are slidably connected to the moving mold (1); the ejector rods (3) are used for ejecting the bearing cage casting, and the point of action is the beam of the bearing cage; the drive unit is used to drive the ejector rods (3) to move; the air blowing unit is located at one end of the ejector rod (3) near the moving mold (1) and can blow air into the cavity of the moving mold (1), which helps the bearing cage pocket to separate from the cavity of the moving mold (1); The air blowing unit includes an air outlet pipe (4), a tee (5) and an air inlet pipe (6); the air outlet pipe (4) is configured as two symmetrically arranged; the tee (5) is used to connect the two air outlet pipes (4) and the air inlet pipe (6); the air inlet pipe (6) is located inside the top rod (3) and extends to the outside of the top rod (3) at the end away from the tee (5); The air outlet pipe (4) is configured as a flexible hose; The end of the air outlet pipe (4) away from the tee (5) is fixedly connected to a fixing block (7), and the fixing block (7) is rotatably connected to a slider (8). The slider (8) is slidably connected to the top rod (3). A torsion spring (16) for resetting is fitted on the rotating shaft of the fixing block (7). A driving part for driving the slider (8) to move is provided inside the top rod (3).

2. The copper metal product die-casting equipment according to claim 1, characterized in that: The drive unit includes a slide column (9), which is elastically slidably connected to the top rod (3); the slide column (9) is hinged to two symmetrically arranged connecting rods (10) on the side near the slider (8), and the ends of the two connecting rods (10) away from the slide column (9) are respectively connected to the two sliders (8); a traction rope (12) is fixedly connected to the slide column (9), and the end of the traction rope (12) away from the slide column (9) passes through the inner wall of the top rod (3) and is fixedly connected to a slider (13); the slider (13) is slidably connected to the top rod (3); the slider (13) is hinged to a connecting rod (14), and the end of the connecting rod (14) away from the slider (13) is hinged to a connecting rod (15), and the end of the connecting rod (15) away from the connecting rod (14) is rotatably connected to the top rod (3).

3. The copper metal product die-casting equipment according to claim 2, characterized in that: The inner side of the slider (8) is elastically slidably connected to the slide rod (11), and the end of the connecting rod (10) away from the slide column (9) is hinged to the slide rod (11); the slide rod (11) is fixedly connected to the insert rod (17), and the fixing block (7) is provided with an insertion hole (18) that can be inserted into the insert rod (17).

4. The copper metal product die-casting equipment according to claim 2, characterized in that: A sealing ring is installed at the top of the top rod (3).

5. The copper metal product die-casting equipment according to claim 1, characterized in that: The drive unit includes a slide plate (19) and a cylinder (20); the slide plate (19) is used to fix and connect multiple push rods (3); the cylinder (20) is used to drive the slide plate (19) to move horizontally.

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