Die casting machine for manufacturing copper casting parts of automobile differential

Abstract

The application discloses a die-casting forming machine for manufacturing a copper casting accessory of an automobile differential, relates to the die-casting accessory technology field, and aims to solve the technical problem of poor lubricating effect of a copper gasket in the existing die-casting template, and comprises a die-casting body, a die-casting table is arranged on the die-casting body, a die-casting upper template and a die-casting lower template are arranged on the die-casting table, a circulating cavity die-casting structure, a rotary acceleration structure, a shaft lubricating structure and a die-casting auxiliary structure are further arranged on the die-casting upper template. The die-casting upper template is provided with convex textures on the bottom wall, the copper gasket with an internal circulating groove body can be die-cast, the lubricating effect of the die-casting product is improved, the matching precision between the components is improved, the service life of the equipment is prolonged, and the equipment maintenance frequency and cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of die casting technology for automotive parts, and more specifically, to a die casting molding machine for manufacturing copper cast parts for automotive differentials. Background Technology

[0002] In modern automotive transmission systems, the differential, as a key component, plays a crucial role in ensuring vehicle stability and maneuverability by allowing the wheels on both sides to rotate at different speeds when the vehicle is turning or encountering uneven road conditions. The copper washers inside the differential, such as the cross shaft washers and thrust washers used on planetary gears or drive gears, though small in size, play an indispensable role. These thin copper washers, mostly round or square in shape, have a central hole for precise mating with the cross shaft. Installed between the planetary gears and the differential housing, they effectively reduce friction between the gear end faces and the housing, minimizing component wear, and also provide axial positioning, ensuring smooth operation of the differential. During the high-speed operation of the differential, copper gaskets must withstand the complex loads and intense friction transmitted by gears for a long time, requiring extremely high lubrication and oil storage performance. However, due to limitations in structural design and molding process, copper gaskets produced by traditional die-casting machines have a microstructure on their surface that is not conducive to the long-term storage of lubricating oil and makes it difficult to form a stable lubricating film. Under actual working conditions, copper gaskets are prone to increased wear and temperature due to insufficient lubrication, which not only significantly shortens their service life but also causes problems such as increased differential operating noise and decreased transmission efficiency, and may even cause differential failure, affecting driving safety. In view of this, we propose a die-casting machine for manufacturing copper casting parts for automotive differentials. Summary of the Invention

[0003] The purpose of this invention is to provide a die-casting molding machine for manufacturing copper casting parts for automotive differentials, so as to solve the technical problem of poor lubrication effect of copper gaskets produced by existing die-cast templates.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a die-casting molding machine for manufacturing copper casting parts for automotive differentials, comprising a die-casting machine body, a die-casting table arranged on the die-casting machine body, a die-casting hydraulic rod fixed to the die-casting machine body above the die-casting table, a connecting sleeve connected to the driving end of the die-casting hydraulic rod, an upper die-casting template at the bottom of the connecting sleeve, a lower die-casting template at the bottom of the upper die-casting template, and a die-casting cavity opened between adjacent sides of the upper die-casting template and the lower die-casting template;

[0005] The die-casting upper mold is provided with a circulating cavity die-casting structure on the top wall side of the die-casting cavity. The circulating cavity die-casting structure includes multiple interconnected curved guide protrusions. The curved guide protrusions are curved trajectories with diameters decreasing from large to small in the direction of gear rotation. A rotation acceleration structure is also provided on the outside of the circulating cavity die-casting structure. The rotation acceleration structure includes multiple acceleration mechanisms. The acceleration mechanisms are curved cylindrical shapes with curved trajectories. The multiple acceleration mechanisms are stacked and connected sequentially from the inside to the outside. A lubrication shaft structure is also provided on the inside of the circulating cavity die-casting structure. The lubrication shaft structure includes lubrication shaft protrusions. Multiple blocking mechanisms are provided on both sides of the lubrication shaft protrusions. A die-casting auxiliary structure is provided on the upper half of the die-casting upper mold.

[0006] Preferably, the circulating cavity die-casting structure includes multiple liquid storage protrusions, which are located near the center. The ends of the multiple curved guide protrusions are all connected to the liquid storage protrusions, and a complete annular track is formed between the multiple curved guide protrusions and the liquid storage protrusions.

[0007] Preferably, the acceleration mechanism consists of an entry section and an acceleration section. The acceleration section is inserted into the curved guide protrusion at an acute angle and the conveying direction is the same as the conveying direction of the rear section of the curved guide protrusion. The entry section is inserted into the curved guide protrusion at an obtuse angle.

[0008] Preferably, the end of the lubricating shaft protrusion is connected to the liquid storage protrusion, and the other end of the lubricating shaft protrusion is attached to the side wall of the die-casting cavity. A plurality of the blocking mechanisms are symmetrically distributed on both sides of the lubricating shaft protrusion. The blocking mechanism includes a curved input section and an inner blocking section. The inner blocking section has a curved trajectory and the direction of the curved input end is opposite to the direction of the lubricating shaft protrusion toward the center. The inlet direction of the curved input section is the same as the direction of the lubricating shaft protrusion toward the center.

[0009] Preferably, the die-casting auxiliary structure includes a driving hydraulic rod, which is located at the center of the connecting sleeve. The driving end of the connecting sleeve passes through the upper die-casting mold and is connected to a driving column, which passes through the center of the upper die-casting mold.

[0010] Preferably, the die-casting auxiliary structure further includes a circular sleeve, with a connecting rod connecting the inner wall of the circular sleeve to the drive column. Multiple connecting rods are connected to the drive column. Pressing blocks are provided on both the upper and lower sides of the circular sleeve. An anti-blocking pin is installed on the side of the upper pressing block. The anti-blocking pin penetrates the die-casting upper template. A notch adapted to the anti-blocking pin is opened at the protruding end of the lubrication shaft.

[0011] Preferably, both pressing blocks have a sloping surface design on the side near the circular sleeve. A telescopic rod is provided between one side of the pressing block and the die-casting upper template. The telescopic rod consists of a telescopic tube and a telescopic sleeve. A bending connecting rod connects the two pressing blocks on the same axis.

[0012] Preferably, a stabilizing mechanism is also provided between the two pressing blocks. The stabilizing mechanism includes an inner sliding groove and a curved plate. The inner sliding groove is opened on the outer periphery of the circular sleeve. The curved plate is composed of a bonding plate and a curved plate. The curved plate is in the shape of a straight plate and is bonded to the inner wall of the circular sleeve. The bonding plate is in the shape of an inclined arc. The bonding plate is adapted to and slidably connected to the inner wall of the inner sliding groove.

[0013] Preferably, the die-casting auxiliary structure further includes a spiral protrusion fixed to the outer periphery of the drive column, a rotating sleeve is sleeved between the outer peripheries of the plurality of spiral protrusions, the inner wall of the rotating sleeve is provided with a spiral cavity adapted to the spiral protrusion, a fixing rod is connected to the outer periphery of the rotating sleeve, and one end of the fixing rod is connected to a curved saw.

[0014] Preferably, the die-casting upper template has a cavity on its outer periphery, and the cavity is connected to the die-casting cavity by an overflow hole. The outer side of the curved saw has a gradually increasing diameter, and the bottom of the curved saw has an integrally formed grinding disc.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention utilizes a circulating cavity die-casting structure with curved guide protrusions and fluid-retaining protrusions to die-cast a unique annular track structure on a copper gasket. This structure leverages the centrifugal force generated during gear rotation to guide the lubricating oil to circulate on the surface of the copper gasket, forming a stable lubricating film. The gradually changing diameter of the curved guide protrusions buffers the impact of centrifugal force on the lubricating fluid and effectively guides the flow of the lubricating fluid, ensuring that the lubricating oil fully covers the contact surface between the copper gasket and the gear. Compared with copper gaskets produced by traditional die-casting machines, this design significantly improves the lubrication and oil-retaining performance of the copper gasket, reduces wear and temperature rise caused by insufficient lubrication, extends the service life of the copper gasket and differential, reduces noise during vehicle operation, improves transmission efficiency and driving safety, and solves the problem of poor lubrication effect of existing die-cast copper gaskets.

[0017] 2. This invention also employs a curved trajectory and superimposed design for multiple acceleration mechanisms in the rotational acceleration structure to effectively guide the lubricating oil when the centrifugal force is large. The obtuse angle of the entry section allows the lubricating oil to flow in slowly with a large arc, while the acute angle of the acceleration section allows the lubricating oil to flow at high speed and merge into the curved guide protrusion, enhancing the flow capacity of the lubricating oil, effectively resisting the outward splashing of oil caused by centrifugal force, effectively ensuring the internal circulation of the lubricating oil, and extending the working time of the lubricating oil. Combined with the oil stored in the liquid storage protrusion, it ensures the stability and long-term effectiveness of internal circulation lubrication even with a small amount of lubricating oil, further solving the problem of poor lubrication effect of existing die-cast copper gaskets.

[0018] 3. The lubrication structure of this invention achieves precise lubrication of the central cross shaft portion of the copper gasket through the synergistic effect of the lubrication protrusion and the blocking mechanism. The lubrication protrusion is engraved with a cavity communicating with the cross shaft, allowing the lubricating oil to directly contact and lubricate the cross shaft. The blocking mechanism controls the output of lubricating oil through the counter-current design of the curved input section and the inner blocking section, extending the lubrication time and storage time. This design effectively reduces the wear of the cross shaft, improves the fitting accuracy between the cross shaft and the copper gasket, further enhances the overall performance and service life of the differential, and reduces the risk of failure due to insufficient lubrication.

[0019] 4. The cutting function of the die-casting auxiliary structure of this invention achieves automatic cutting of excess material through the coordinated action of the driving hydraulic rod, the spiral protrusion and the rotating sleeve. The design of the outer diameter of the curved saw gradually increases the contact area during the cutting process, reducing the cutting difficulty and resistance, improving cutting efficiency and quality, and improving processing efficiency and automation.

[0020] 5. The present invention further optimizes the processing flow through the combination design of anti-blocking pin and grinding disc. The anti-blocking pin automatically inserts into or disengages from the recess of the lubricating shaft during the lifting and lowering of the drive column, effectively preventing material residue from forming a film, avoiding secondary rework, and ensuring smooth demolding and surface quality of the copper gasket. The elastic design of the grinding disc immediately rough grinds the processed part after cutting, using friction metal discs to remove burrs and uneven surfaces, reducing the workload of subsequent fine grinding and improving the overall processing efficiency.

[0021] 6. The stabilizing mechanism of this invention provides dual stability assurance for equipment operation through the cooperation of the inner sliding groove and the stabilizing component, as well as the squeezing drive of the circular sleeve and the pressing block. The fitting plate fits against the inner wall of the circular sleeve, ensuring the stability of the circular sleeve during lifting; the sliding connection between the curved plate and the inner sliding groove, combined with the squeezing of the circular sleeve and the pressing block, achieves stable driving and positioning. This design effectively reduces shaking and displacement during equipment operation, improves the matching accuracy between various components, extends the service life of the equipment, and reduces the frequency and cost of equipment maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the die-casting platform in this invention;

[0024] Figure 3 This is a schematic diagram of the die-casting template part in this invention;

[0025] Figure 4 This is a schematic diagram of the inverted structure of the die-casting upper template in this invention;

[0026] Figure 5This is a schematic diagram of the die-casting lower template in this invention;

[0027] Figure 6 This is a structural illustration of the circulating cavity die-casting structure, the rotation acceleration structure, and the shaft lubrication structure in this invention;

[0028] Figure 7 This is a diagram illustrating the internal structure of the die-casting upper template in this invention;

[0029] Figure 8 This is a schematic diagram of a half-section of the circular sleeve portion in this invention;

[0030] Figure 9 This is a schematic diagram of the connection structure between the two pressing blocks in this invention;

[0031] Figure 10 This is a schematic diagram of the upper half of the drive column in this invention;

[0032] Figure 11 This is a schematic diagram of the connection structure of the curved saw part in this invention;

[0033] Figure 12 This is a schematic diagram of the inverted structure of the curved arc saw in this invention;

[0034] Figure 13 This is a schematic diagram of the structure of the die-cast copper gasket in this invention;

[0035] Figure 14 In this invention Figure 6 Enlarged view of part A in the middle;

[0036] Figure 15 In this invention Figure 7 A magnified view of section B in the middle.

[0037] Explanation of the labels in the diagram:

[0038] 1. Die-casting machine body; 2. Die-casting table; 3. Die-casting hydraulic rod; 4. Connecting sleeve; 5. Upper die-casting template; 6. Lower die-casting template; 7. Circulating chamber die-casting structure; 8. Rotation acceleration structure; 9. Shaft lubrication structure; 10. Die-casting auxiliary structure; 11. Conveyor belt; 12. Material conveying motor; 13. Protruding edging part; 14. Finished copper gasket; 701. Curved guide protrusion; 702. Liquid storage protrusion; 81. Acceleration mechanism; 811. Entry section; 812. Acceleration section; 901. Shaft lubrication protrusion; 92. Blocking mechanism; 9 21. Bending input section; 922. Internal blocking section; 101. Drive hydraulic rod; 102. Drive column; 103. Circular sleeve; 104. Connecting rod; 105. Pressing block; 106. Anti-blocking needle; 107. Telescopic rod; 108. Bending connecting rod; 109. Spiral protrusion; 110. Rotating sleeve; 111. Fixed rod; 112. Bending saw; 113. Overflow hole; 114. Grinding disc; 18. Stabilizing mechanism; 181. Internal groove; 182. Stabilizing component; 1821. Adhesive plate; 1822. Bending slope plate. Detailed Implementation

[0039] like Figures 1 to 15 As shown, where Figure 13 This invention relates to a die-casting molding machine for manufacturing copper cast parts for automotive differentials, as shown in the structural diagram of the finished copper gasket 14. The machine includes a die-casting machine body 1, on which a die-casting table 2 is arranged. Before die-casting, the copper gasket generally needs to be heated to a liquid state. To ensure uniform feeding, a transmission belt 11 is provided at the center of the bottom of the die-casting table 2. The transmission belt 11 consists of two wheels and a belt. One wheel is connected to a feeding motor 12 at its center. The rotation of the feeding motor 12 allows the die-casting table 2 to rotate, achieving uniform feeding. A die-casting hydraulic rod 3, fixed to the die-casting machine body 1, is provided above the die-casting table 2. A connecting sleeve 4 is connected to the driving end of the die-casting hydraulic rod 3. An upper die-casting template 5 is provided at the bottom of the connecting sleeve 4, and a lower die-casting template 6 is provided at the bottom of the upper die-casting template 5. A die-casting cavity is formed between the adjacent sides of the upper die-casting template 5 and the lower die-casting template 6.

[0040] The die-casting upper template 5 is provided with a circulating cavity die-casting structure 7 on the top wall side of the die-casting cavity. The circulating cavity die-casting structure 7 includes multiple interconnected curved guide protrusions 701. The curved guide protrusions 701 are curved trajectories with diameters decreasing from large to small in the direction of gear rotation. The curve diameter at the starting end of the curved guide protrusions 701 is larger to buffer the lubricating fluid under the centrifugal force of rotation. The subsequent sections of the curved guide protrusions 701 cooperate with the centrifugal force of rotation to guide the flow direction of the lubricating fluid. The circulating cavity die-casting structure 7 includes multiple liquid storage protrusions 702, which are located near the center. The ends of the multiple curved guide protrusions 701 are connected to the liquid storage protrusions 702, and a complete circular track is formed between the multiple curved guide protrusions 701 and the liquid storage protrusions 702.

[0041] Working principle: The curved guide protrusion 701 is die-cast to create a gradually changing curved trajectory. The design of this curved trajectory corresponds to the direction of rotation and centrifugal force. Combined with the liquid storage tank created by the liquid storage protrusion 702, it achieves the function of storing liquid. At the same time, as the gear rotates, the copper gasket and the gear side are in contact for lubrication. The high-speed rotation and centrifugal force of the die-cast copper gasket, along with the rotation of the gear, generates a centrifugal force effect, causing the lubricating oil to move outward centrifugally. Due to the obstruction and restriction of the groove of the curved guide protrusion 701, and in conjunction with the rotation of the gear, the lubricating oil moves along the curved guide protrusion 701. Due to the sequential interconnection of the annular array, the lubricating oil circulates, improving the lubrication effect of the die-cast copper gasket.

[0042] Due to the centrifugal force of rotation, the oil will be thrown outward, further ensuring the circulation of lubricant on the die-cast gasket. A rotation acceleration structure 8 is also provided on the outside of the circulation cavity die-casting structure 7. The rotation acceleration structure 8 includes multiple acceleration mechanisms 81. The acceleration mechanism 81 is a curved cylindrical shape with a curved trajectory. Multiple acceleration mechanisms 81 are stacked and connected from the inside to the outside. The acceleration mechanism 81 consists of an entry section 811 and an acceleration section 812. The acceleration section 812 is inserted into the curved guide protrusion 701 at an acute angle. The lubricant delivery direction of the acceleration section 812 is the same as the delivery direction of the rear section of the curved guide protrusion 701. This mainly refers to the fact that when the finished copper gasket 14 is in use, the direction of the lubricant movement caused by the centrifugal force of the gear rotation is the same. The entry section 811 is inserted into the curved guide protrusion 701 at an obtuse angle.

[0043] Working principle: Due to the multiple superposition of the acceleration mechanism 81, when the centrifugal force is large, the buffering effect of the initial end of the curved guide protrusion 701 is weak. The lubricating oil, which also has an outward moving force, will gradually flow to the multiple acceleration mechanisms 81. With the guidance of the entry section 811 and the acceleration section 812, it flows in slowly with a large arc. Combined with the high-speed flow with a small arc and the partial entry of the curved guide protrusion 701, the flow force of the lubricating oil along the curved guide protrusion 701 is strengthened to resist the centrifugal force, so that it can achieve better circulation flow and adapt to the use of high speed.

[0044] To achieve lubrication of the central cross shaft portion of the gasket, a lubrication shaft structure 9 is also provided inside the die-casting structure 7 of the circulation cavity. The lubrication shaft structure 9 includes a lubrication shaft protrusion 901. The end of the lubrication shaft protrusion 901 is connected to the liquid storage protrusion 702, and the other end of the lubrication shaft protrusion 901 is attached to the side wall of the die-casting cavity. Multiple blocking mechanisms 92 are provided on both sides of the lubrication shaft protrusion 901. The multiple blocking mechanisms 92 are symmetrically distributed on both sides of the lubrication shaft protrusion 901. The blocking mechanism 92 includes a curved input section 921 and an inner blocking section 922. The inner blocking section 922 has a curved trajectory. The direction of lubricating oil flow at the curved input end of the inner blocking section 922 is opposite to the direction of lubricating oil input towards the center of the lubrication shaft protrusion 901. The direction of lubricating oil entering the inlet of the curved input section 921 is the same as the direction of lubricating oil input towards the center of the lubrication shaft protrusion 901.

[0045] Working principle: The lubricating shaft protrusion 901 can be engraved with a cavity that communicates with the cross shaft part, so that the lubricating oil can contact and lubricate the cross shaft part. At the same time, the cooperation of multiple blocking mechanisms 92 splits the output direction. Combined with the inflow of the curved input section 921 and the outflow of the inner blocking section 922, and because the inner blocking section 922 and the lubricating shaft protrusion 901 are opposed in direction, the output is restricted, thereby controlling the output of lubricating oil to extend the lubrication time and the storage time of lubricating oil.

[0046] Due to the design of the protruding part, a large amount of copper material needs to be input in order to ensure the production of complete recessed patterns. In order to remove the excess copper material, a die-casting auxiliary structure 10 is provided on the upper half of the die-casting upper template 5. The die-casting auxiliary structure 10 includes a driving hydraulic rod 101, which is located at the center of the connecting sleeve 4. The driving end of the connecting sleeve 4 passes through the die-casting upper template 5 and is connected to a driving column 102. The driving column 102 passes through the center of the die-casting upper template 5.

[0047] The die-casting auxiliary structure 10 also includes a spiral protrusion 109 fixed to the outer periphery of the drive column 102. A rotating sleeve 110 is sleeved between the outer peripheries of multiple spiral protrusions 109. The inner wall of the rotating sleeve 110 has a spiral cavity adapted to the spiral protrusion 109. A fixing rod 111 is connected to the outer periphery of the rotating sleeve 110. One end of the fixing rod 111 is connected to the curved saw 112. A concave cavity is opened on the outer periphery of the die-casting upper template 5. An overflow hole 113 is connected between the concave cavity and the die-casting cavity. The overflow hole 113 is used to discharge excess material. The overflow hole 113 is located at the edge of the die-casting cavity, so that the wall thickness at the overflow hole 113 is ensured to be within one millimeter, reducing the difficulty of subsequent grinding. The outer side of the curved saw 112 has a gradually increasing diameter. The bottom of the curved saw 112 has an integrally formed grinding disc 114. The grinding disc 114 has a gradually increasing thickness design. The connection between the grinding disc 114 and the bottom of the curved saw 112 is made of elastic material. The bottom side of the elastic material is bonded with a friction metal sheet.

[0048] Working principle: During die casting, excess material is discharged through overflow hole 113. After the temperature drops and the material is initially shaped, the hydraulic rod 101 is driven to run, which drives the drive column 102 to descend, causing the spiral protrusion 109 to descend. In conjunction with the spiral cavity, the rotating sleeve 110 rotates. Since the outer side of the curved saw 112 has a gradually increasing diameter, the curved saw 112 gradually contacts and cuts off the overflowing part with a gradually increasing contact area, reducing the difficulty of cutting. At the same time, after cutting, the grinding disc 114 gradually contacts the cut part. Its elastic design allows it to perform rough grinding on the cut part, reducing the difficulty of subsequent grinding.

[0049] Since the material is liquid during die casting, although the lubricating shaft protrusion 901 is in contact with the side wall of the die casting cavity, there may still be a film due to aging or other reasons. The die casting auxiliary structure 10 also includes a circular sleeve 103. A connecting rod 104 is connected between the inner wall of the circular sleeve 103 and the drive column 102. Multiple connecting rods 104 are connected to the drive column 102. Pressing blocks 105 are provided on both the upper and lower sides of the circular sleeve 103. An anti-blocking pin 106 is installed on the side of the upper pressing block 105. The anti-blocking pin 106 penetrates the die casting upper template 5. The end of the lubricating shaft protrusion 901 is provided with a notch that matches the anti-blocking pin 106.

[0050] Both pressing blocks 105 have a sloping surface design on the side near the sleeve 103. The outer periphery of the sleeve 103 is in contact with the sloping surface. A telescopic rod 107 is provided between one side of the pressing block 105 and the die-casting upper template 5. The telescopic rod 107 is composed of a telescopic tube and a telescopic sleeve. A bending connecting rod 108 is connected between the two pressing blocks 105 on the same axis.

[0051] Working principle: The lifting and lowering movement of the drive column 102 drives the lifting and lowering movement of the sleeve 103. During the lifting and lowering process of the sleeve 103, it can squeeze the inclined surface, causing the anti-blocking pin 106 to move. When the sleeve 103 descends, it squeezes the lower pressing block 105 to move outward, causing the anti-blocking pin 106 to insert into the recess of the lubricating shaft protrusion 901. This can avoid the formation of a thin film, which would require secondary rework. When the sleeve 103 rises, it squeezes the upper pressing block 105 to move inward, causing the anti-blocking pin 106 to separate from the recess of the lubricating shaft protrusion 901. This does not affect demolding and makes it easy to remove the die-cast copper gasket.

[0052] It should be noted that the distance of its lifting and lowering movement is matched with the spiral protrusion 109 and the spiral cavity, so that demolding is carried out during the cutting process and reset is achieved during the descent process, which facilitates continuous processing and use.

[0053] To further improve stability, a stabilizing mechanism 18 is provided between the two pressing blocks 105. The stabilizing mechanism 18 includes an inner groove 181 and a stabilizing element 182. The inner groove 181 is opened on the outer periphery of the sleeve 103. The stabilizing element 182 is composed of a bonding plate 1821 and a curved plate 1822. The bonding plate 1821 is in the form of a straight plate and is bonded to the inner wall of the sleeve 103. The curved plate 1822 is in the form of an inclined arc and is adapted to and slidably connected to the inner wall of the inner groove 181. The side of the pressing block 105 is also provided with a protruding edge portion 13 adapted to the outer periphery of the sleeve 103.

[0054] Because of the straight bonding of the bonding plate 1821, the stability of the sleeve 103 during the lifting process can be guaranteed. The sliding connection between the curved slope plate 1822 and the inner slide groove 181, as well as the squeezing cooperation between the sleeve 103 and the pressing block 105, achieves a dual stable squeezing drive, which improves its stability and extends its service life.

[0055] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A die-casting molding machine for manufacturing copper cast parts for automotive differentials, characterized in that, The device includes a die-casting machine body (1), a die-casting table (2) is arranged on the die-casting machine body (1), a die-casting hydraulic rod (3) fixed to the die-casting machine body (1) is arranged above the die-casting table (2), a connecting sleeve (4) is connected to the driving end of the die-casting hydraulic rod (3), a die-casting upper template (5) is provided at the bottom of the connecting sleeve (4), a die-casting lower template (6) is provided at the bottom of the die-casting upper template (5), and a die-casting cavity is opened between the adjacent sides of the die-casting upper template (5) and the die-casting lower template (6); The die-casting upper template (5) is provided with a circulating cavity die-casting structure (7) on the top wall side of the die-casting cavity. The circulating cavity die-casting structure (7) includes multiple interconnected curved guide protrusions (701). The curved guide protrusions (701) are curved trajectories with diameters decreasing from large to small in the direction of gear rotation. The circulating cavity die-casting structure (7) is also provided with a rotation acceleration structure (8) on the outside. The rotation acceleration structure (8) includes multiple acceleration mechanisms (81). The acceleration mechanism (81) is a curved cylindrical shape with a curved trajectory. The multiple acceleration mechanisms (81) are superimposed and connected from the inside to the outside. The circulating cavity die-casting structure (7) is also provided with a lubrication shaft structure (9) on the inside. The lubrication shaft structure (9) includes a lubrication shaft protrusion (901). Multiple blocking mechanisms (92) are provided on both sides of the lubrication shaft protrusion (901). The upper half of the die-casting upper template (5) is provided with a die-casting auxiliary structure (10). The circulating cavity die-casting structure (7) includes multiple liquid storage protrusions (702), which are located near the center. The ends of multiple curved guide protrusions (701) are connected to the liquid storage protrusions (702), and a complete ring track is formed between the multiple curved guide protrusions (701) and the liquid storage protrusions (702). The end of the lubricating shaft protrusion (901) is connected to the liquid storage protrusion (702), and the other end of the lubricating shaft protrusion (901) is attached to the side wall of the die casting cavity. Multiple blocking mechanisms (92) are symmetrically distributed on both sides of the lubricating shaft protrusion (901). The blocking mechanism (92) includes a curved input section (921) and an inner blocking section (922). The inner blocking section (922) has a curved trajectory and the direction of the curved input end is opposite to the direction of the lubricating shaft protrusion (901) towards the center. The inlet direction of the curved input section (921) is the same as the direction of the lubricating shaft protrusion (901) towards the center.

2. The die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 1, characterized in that, The acceleration mechanism (81) consists of an entry section (811) and an acceleration section (812). The acceleration section (812) is inserted into the curved guide protrusion (701) at an acute angle and the conveying direction is the same as the conveying direction of the rear section of the curved guide protrusion (701). The entry section (811) is inserted into the curved guide protrusion (701) at an obtuse angle.

3. The die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 2, characterized in that, The die-casting auxiliary structure (10) includes a driving hydraulic rod (101), which is located at the center of the connecting sleeve (4). The driving end of the connecting sleeve (4) passes through the die-casting upper template (5) and is connected to a driving column (102). The driving column (102) passes through the center of the die-casting upper template (5).

4. The die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 3, characterized in that, The die-casting auxiliary structure (10) also includes a round sleeve (103). A connecting rod (104) is connected between the inner wall of the round sleeve (103) and the drive column (102). Multiple connecting rods (104) are connected to the drive column (102). Pressing blocks (105) are provided on both the upper and lower sides of the round sleeve (103). An anti-blocking pin (106) is installed on the side of the upper pressing block (105). The anti-blocking pin (106) penetrates the die-casting upper template (5). The end of the lubrication shaft protrusion (901) is provided with a notch that matches the anti-blocking pin (106).

5. A die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 4, characterized in that, Both of the pressing blocks (105) are designed with a sloping surface on the side near the round sleeve (103). A telescopic rod (107) is provided between one side of the pressing block (105) and the die-casting upper template (5). The telescopic rod (107) is composed of a telescopic tube and a telescopic sleeve. A bending connecting rod (108) is connected between the two pressing blocks (105) on the same axis.

6. A die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 5, characterized in that, A stabilizing mechanism (18) is also provided between the two pressing blocks (105). The stabilizing mechanism (18) includes an inner groove (181) and a stabilizing element (182). The inner groove (181) is opened on the outer periphery of the sleeve (103). The stabilizing element (182) is composed of a bonding plate (1821) and a curved plate (1822). The bonding plate (1821) is in the shape of a straight plate and is bonded to the inner wall of the sleeve (103). The curved plate (1822) is in the shape of an inclined arc. The curved plate (1822) is adapted to the inner wall of the inner groove (181) and is slidably connected.

7. A die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 3 or 6, characterized in that, The die-casting auxiliary structure (10) also includes a spiral protrusion (109) fixed to the outer periphery of the drive column (102). A rotating sleeve (110) is sleeved between the outer peripheries of the plurality of spiral protrusions (109). The inner wall of the rotating sleeve (110) is provided with a spiral cavity adapted to the spiral protrusion (109). A fixing rod (111) is connected to the outer periphery of the rotating sleeve (110). One end of the fixing rod (111) is connected to a curved arc saw (112).

8. A die-casting molding machine for manufacturing copper casting parts for automotive differentials according to claim 7, characterized in that, The die-casting upper template (5) has a concave cavity on its outer periphery, and an overflow hole (113) is connected between the concave cavity and the die-casting cavity. The outer side of the curved arc saw (112) has a gradually increasing diameter, and the bottom of the curved arc saw (112) has an integrally formed grinding disc (114).

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