Die-casting forming machine for manufacturing copper casting accessories of automobile differential mechanism

Abstract

The invention discloses a die-casting forming machine for manufacturing copper casting accessories of an automobile differential mechanism, relates to the technical field of accessory die-casting, and aims to solve the technical problem that the lubricating effect of a copper gasket subjected to die-casting through an existing die plate is poorer. The die-casting forming machine comprises a die-casting machine body, a die-casting table is arranged on the die-casting machine body, and a die-casting upper die plate and a die-casting lower die plate are arranged on the die-casting table; the die-casting upper die plate is further provided with a circulation cavity die-casting structure, a rotation acceleration structure, a shaft lubricating structure and a die-casting auxiliary structure. Through the design of the protruding textures on the bottom wall of the die-casting upper die plate, the copper gasket with the inner circulation groove body is formed in a die-casting mode, the lubricating effect of a die-casting product is improved, the matching precision of all components is improved, the service life of equipment is prolonged, and the maintenance frequency and cost of the equipment are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting of accessories, and more specifically, to a die-casting machine for manufacturing copper cast accessories of an automotive differential. Background Art

[0002] In a modern automotive transmission system, the differential, as a key component, undertakes the important function of enabling the two wheels to rotate at different speeds when the vehicle turns or the road conditions are uneven, ensuring the stability and flexibility of the vehicle's driving. The copper gaskets inside the differential, such as the cross-shaft gaskets and thrust gaskets used for planetary gears or transmission gears, although small in size, play an indispensable role. These thin copper gaskets are mostly circular or square in shape, with a hole in the center for precise fitting with the cross shaft, and are installed between the planetary gear and the differential housing. They can not only effectively reduce the friction between the gear end face and the housing, reduce component wear, but also achieve axial positioning to ensure the smooth operation of the differential. During the high-speed operation of the differential, the copper gaskets need to withstand the complex loads and intense friction transmitted by the gears for a long time, and have extremely high requirements for their lubricating oil storage performance. However, for the copper gaskets produced by traditional die-casting machines, due to the limitations of the structural design and forming process, the surface microstructure is not conducive to the long-term storage of lubricating oil, and it is difficult to form a stable lubricating film. Under actual working conditions, the copper gaskets are prone to increased wear and temperature rise due to insufficient lubrication, which not only greatly shortens their own service life, but also causes problems such as increased operating noise and decreased transmission efficiency of the differential, and may even cause differential failures, affecting driving safety. In view of this, we propose a die-casting machine for manufacturing copper cast accessories of an automotive differential. Summary of the Invention

[0003] The purpose of the present invention is to provide a die-casting machine for manufacturing copper cast accessories of an automotive differential to solve the technical problem of poor lubrication effect of the copper gaskets die-cast by existing templates.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A die-casting machine for manufacturing copper cast accessories of an automotive differential, including a die-casting body, a die-casting table is arranged on the die-casting body, a die-casting hydraulic rod fixed to the die-casting body is provided above the die-casting table, a connecting sleeve is connected to the driving end of the die-casting hydraulic rod, a die-casting upper template is provided at the bottom of the connecting sleeve, a die-casting lower template is provided at the bottom of the die-casting upper template, and a die-casting cavity is formed between the adjacent sides of the die-casting upper template and the die-casting lower template. The upper die-casting template is provided with a circulating cavity die-casting structure on the side of the top wall of the die-casting cavity. The circulating cavity die-casting structure includes a plurality of mutually connected arc-shaped guiding protrusions. The arc-shaped guiding protrusions are in a curve trajectory with a diameter decreasing from large to small in the direction of gear rotation. A rotation acceleration structure is also provided outside the circulating cavity die-casting structure. The rotation acceleration structure includes a plurality of acceleration mechanisms. The acceleration mechanisms are in the form of curved cylinders with a curved trajectory. A plurality of the acceleration mechanisms are sequentially stacked and connected from the inside to the outside. A shaft lubricating structure is also provided inside the circulating cavity die-casting structure. The shaft lubricating structure includes lubricating shaft protrusions. A plurality of blocking mechanisms are provided on both sides of the lubricating shaft protrusions. A die-casting auxiliary structure is provided in the upper half of the upper die-casting template.

[0005] Preferably, the circulating cavity die-casting structure includes a plurality of liquid storage protrusions. The liquid storage protrusions are located near the center. The ends of a plurality of the arc-shaped guiding protrusions are all connected to the liquid storage protrusions. A complete annular track is formed between a plurality of the arc-shaped guiding protrusions and the liquid storage protrusions.

[0006] Preferably, the acceleration mechanism is composed of an inlet section and an acceleration section. The acceleration section is inserted into the inside of the arc-shaped guiding protrusion at an acute angle, and the conveying direction is the same as the conveying direction of the rear section of the arc-shaped guiding protrusion. The inlet section is inserted into the arc-shaped guiding protrusion at an obtuse angle direction.

[0007] Preferably, the end of the lubricating shaft protrusion is connected to the liquid storage protrusion. 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 an arc-shaped input section and an inner blocking section. The inner blocking section is in an arc-shaped trajectory, and the direction of the arc-shaped input end is opposite to the direction of the lubricating shaft protrusion toward the center input. The inlet direction of the arc-shaped input section is the same as the direction of the lubricating shaft protrusion toward the center input.

[0008] Preferably, the die-casting auxiliary structure includes a driving hydraulic rod. The driving hydraulic rod is at the center of the connecting sleeve. The driving end of the connecting sleeve penetrates through the upper die-casting template and is connected to a driving column. The driving column penetrates through the center of the upper die-casting template.

[0009] Preferably, the die-casting auxiliary structure further includes a round sleeve. A connecting rod is connected between the inner wall of the round sleeve and the driving column. A plurality of the connecting rods are connected to the driving column. Pressing blocks are provided on both the upper and lower sides of the round sleeve. An anti-blocking needle is installed on one side of the pressing block above. The anti-blocking needle penetrates through the upper die-casting template. A notch adapted to the anti-blocking needle is opened at the end of the lubricating shaft protrusion.

[0010] Preferably, the sides of the two pressing blocks close to the round sleeve are both designed as inclined planes. A telescopic rod is provided between one side of the pressing block and the upper die-casting template. The telescopic rod is composed of a telescopic tube and a telescopic sleeve. A curved connecting rod is connected between the two pressing blocks on the same axial side.

[0011] Preferably, a stabilizing mechanism is also provided between the two pressing blocks, and the stabilizing mechanism comprises an inner slide groove and, the inner slide groove is opened on the outer circumference of the circular sleeve, and is composed of a bonding plate and a curved slope plate, the curved slope 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 curved arc, and the bonding plate is adapted to the inner wall of the inner slide groove and is slidably connected.

[0012] Preferably, the die-casting auxiliary structure also includes a spiral protrusion fixed to the outer periphery of the driving column, a rotating sleeve is arranged between the outer peripheries of multiple spiral protrusions, a spiral cavity adapted to the spiral protrusion is opened on the inner wall of the rotating sleeve, a fixing rod is connected to the outer periphery of the rotating sleeve, and one end of the fixing rod is connected to a bending arc saw.

[0013] Preferably, a concave cavity is opened on the outer periphery of the die-casting upper template, an overflow hole is connected between the concave cavity and the die-casting cavity, the outer side of the curved arc saw is in a shape with gradually increasing diameter, and a grinding sheet is integrally formed on the bottom of the curved arc saw.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a circulating cavity die-casting structure through an arc guide protrusion and a liquid storage protrusion to die-cast a unique annular track structure on the copper gasket. The structure uses the centrifugal force generated when the gear rotates to guide the lubricating oil to circulate on the surface of the copper gasket to form a stable lubricating film. The curved trajectory with a gradually changing diameter of the arc guide protrusion can not only buffer the impact of the centrifugal force on the lubricating fluid, but also effectively guide the flow of the lubricating fluid to ensure that the lubricating oil fully covers the fitting surface of the copper gasket and the gear. Compared with the copper gasket produced by the traditional die-casting molding machine, this design significantly improves the lubrication and oil storage performance of the copper gasket, reduces the wear and temperature rise caused by insufficient lubrication, extends the service life of the copper gasket and the differential, reduces the noise during vehicle operation, improves the transmission efficiency and driving safety, and solves the problem of poor lubrication effect of the copper gasket die-casted by the existing template.

[0015] 2. The present invention also adopts a curved trajectory and superposition design through multiple acceleration mechanisms of the rotating 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, and the acute angle of the acceleration section allows the lubricating oil to flow at a high speed and merge into the curved guide protrusion, thereby enhancing the flowability of the lubricating oil, effectively resisting the oil being thrown outward due to centrifugal force, effectively ensuring the internal circulation of the lubricating oil, extending the action time of the lubricating oil, and cooperating with the storage of oil in the liquid storage protrusion to ensure the stability and long-term effectiveness of the internal circulation lubrication even with a small amount of lubricating oil, further solving the problem of poor lubrication effect of the copper gasket of the existing template die-casting.

[0016] 3. Through the synergistic effect of the shaft lubricating protrusions and the blocking mechanism, the shaft lubricating structure of the present invention achieves precise lubrication of the central cross shaft part of the copper gasket. The shaft lubricating protrusions are engraved with cavities communicating with the cross shaft, enabling the lubricating oil to directly contact and lubricate the cross shaft. The blocking mechanism controls the output volume of the lubricating oil through the counteracting design of the arc-shaped input section and the inner blocking section, extending the lubrication duration 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 failures caused by insufficient lubrication.

[0017] 4. Through the synergistic effect of the driving hydraulic rod, the spiral protrusions, and the rotating sleeve, the cutting function of the die-casting auxiliary structure of the present invention realizes the automatic cutting of excess materials. The design of the gradually increasing outer diameter of the arc-shaped saw enables the contact area to gradually increase during the cutting process, reducing the cutting difficulty and resistance, improving the cutting efficiency and quality, and enhancing the processing efficiency and automation.

[0018] 5. The present invention further optimizes the processing flow through the combined design of the anti-blocking needle and the grinding sheet. The anti-blocking needle automatically inserts into or disengages from the notch of the shaft lubricating protrusion during the lifting and lowering of the driving column, effectively preventing the formation of a thin film due to material residue and avoiding the problem of secondary repair, ensuring the smooth demolding of the copper gasket and its surface quality. The elastic design of the grinding sheet immediately performs rough grinding on the processed part after cutting, removing burrs and uneven surfaces using the friction metal sheet, reducing the workload of subsequent fine grinding, and improving the overall processing efficiency.

[0019] 6. The stability mechanism of the present invention provides double stability guarantees for the operation of the equipment through the cooperation of the inner sliding groove and the stabilizing member, as well as the extrusion drive of the circular sleeve and the pressing block. The fitting plate fits with the inner wall of the circular sleeve to ensure the stability of the circular sleeve during the lifting and lowering process; the sliding connection between the curved slope plate and the inner sliding groove, combined with the extrusion of the circular sleeve and the pressing block, realizes stable driving and positioning. This design effectively reduces the shaking and displacement during the operation of the equipment, improves the fitting accuracy between components, extends the service life of the equipment, and reduces the equipment maintenance frequency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the die-casting table part of the present invention; Figure 3 is a schematic structural diagram of the die-casting template part of the present invention; Figure 4 is an inverted schematic structural diagram of the upper die-casting template of the present invention; Figure 5 is a schematic structural diagram of the lower die-casting template of the present invention; Figure 6This is a structural diagram showing the circulating cavity die-casting structure, rotating acceleration structure, and shaft lubricating structure in the present invention; Figure 7 This is a diagram showing the internal structure of the die-casting upper template in the present invention; Figure 8 This is a schematic semi-sectional view of the circular sleeve part in the present invention; Figure 9 This is a schematic diagram showing the connection structure between two pressing blocks in the present invention; Figure 10 This is a schematic diagram showing the upper half structure of the driving column in the present invention; Figure 11 This is a schematic diagram showing the connection structure of the curved arc saw part in the present invention; Figure 12 This is an inverted structure schematic diagram of the curved arc saw in the present invention; Figure 13 This is a schematic diagram of the finished copper gasket structure die-cast in the present invention; Figure 14 In the present invention Figure 6 An enlarged view of part A; Figure 15 In the present invention Figure 7 An enlarged view of part B.

[0021] Explanation of reference numerals in the figure: 1. Die-casting machine body; 2. Die-casting table; 3. Die-casting hydraulic rod; 4. Connecting sleeve; 5. Die-casting upper template; 6. Die-casting lower template; 7. Circulating cavity die-casting structure; 8. Rotating acceleration structure; 9. Shaft lubricating structure; 10. Die-casting auxiliary structure; 11. Transmission belt; 12. Feeding motor; 13. Convex edge part; 14. Finished copper gasket; 701. Curved arc guiding protrusion; 702. Liquid storage convex part; 81. Acceleration mechanism; 811. Entrance section; 812. Acceleration section; 901. Shaft lubricating protrusion; 92. Blocking mechanism; 921. Curved arc input section; 922. Inner blocking section; 101. Driving hydraulic rod; 102. Driving column; 103. Circular sleeve; 104. Connecting rod; 105. Pressing block; 106. Anti-blocking needle; 107. Telescopic rod; 108. Bent connecting rod; 109. Spiral protrusion; 110. Rotating sleeve; 111. Fixed rod; 112. Curved arc saw; 113. Overflow hole; 114. Grinding sheet; 18. Stabilizing mechanism; 181. Inner sliding groove; 182. Stabilizing part; 1821. Fitting plate; 1822. Bent slope plate. Detailed implementation method

[0022] As Figures 1 to 15 shown, where Figure 13It is a structural diagram of the finished copper gasket 14. A die-casting molding machine for manufacturing copper cast fittings of an automotive differential involved in the present invention includes a die-casting body 1. A die-casting table 2 is arranged on the die-casting body 1. Before die-casting the copper gasket, it generally needs to be heated to a liquid state. To feed the material evenly, a transmission belt 11 is provided at the center of the bottom of the die-casting table 2. The transmission belt 11 is composed of two wheel bodies and a belt. One of the wheel bodies is connected to a feeding motor 12 at the center. By rotating the feeding motor 12, the die-casting table 2 can be rotated to achieve uniform feeding. Above the die-casting table 2, there is a die-casting hydraulic rod 3 fixed to the die-casting body 1. The driving end of the die-casting hydraulic rod 3 is connected to a connecting sleeve 4. 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. A die-casting cavity is formed between the adjacent sides of the die-casting upper template 5 and the die-casting lower template 6.

[0023] On the side of the top wall of the die-casting cavity where the die-casting upper template 5 is located, there is a circulating cavity die-casting structure 7. The circulating cavity die-casting structure 7 includes a plurality of interconnected arc-shaped guiding protrusions 701. The arc-shaped guiding protrusions 701 are in a curve trajectory with a diameter decreasing from large to small in the direction of gear rotation. The curve diameter at the starting end of the arc-shaped guiding protrusions 701 is larger to facilitate buffering the lubricating liquid with rotational centrifugal force. The subsequent sections of the arc-shaped guiding protrusions 701 are used to cooperate with the rotational centrifugal force to guide the flow direction of the lubricating liquid. The circulating cavity die-casting structure 7 includes a plurality of liquid storage protrusions 702. The liquid storage protrusions 702 are located near the center. The ends of the plurality of arc-shaped guiding protrusions 701 are all connected to the liquid storage protrusions 702. A complete annular track is formed between the plurality of arc-shaped guiding protrusions 701 and the liquid storage protrusions 702.

[0024] Working principle: By the arc-shaped guiding protrusions 701, an arc trajectory with a gradually changing diameter is die-cast. The design of the arc trajectory corresponding to the rotational centrifugal direction, combined with the liquid storage tank body die-cast by the liquid storage protrusions 702, realizes the function of storing the liquid state. At the same time, when the gear rotates, the copper gasket and the gear side are in a fitting lubrication state. Due to the high-speed rotational centrifugal force, the die-cast copper gasket rotates in cooperation with the rotation of the fitting gear, generating an effect of rotational centrifugal force, causing the lubricating oil to move outward centrifugally. During the movement, due to the blocking and restriction of the groove body of the arc-shaped guiding protrusions 701, combined with the cooperation of the gear rotation, the lubricating oil will move along the arc-shaped guiding protrusions 701. Due to the sequential connection and distribution in an annular array, the lubricating oil circulates, improving the lubrication effect of the die-cast copper gasket.

[0025] Due to the action of the rotating centrifugal force, the oil will be thrown out, and the circulation of the lubricating liquid on the die-cast gasket is further ensured. A rotating acceleration structure 8 is also arranged on the outside of the circulating cavity die-cast structure 7. The rotating acceleration structure 8 includes a plurality of accelerating mechanisms 81. The accelerating mechanism 81 is in the form of a curved cylinder with a curved trajectory. The plurality of accelerating mechanisms 81 are sequentially stacked and connected from the inside to the outside. The accelerating mechanism 81 is composed of an entry section 811 and an acceleration section 812. The acceleration section 812 is inserted into the interior of the arc guide protrusion 701 at an acute angle. The lubricating oil conveying direction of the acceleration section 812 is the same as the conveying direction of the rear section of the arc guide protrusion 701. It mainly refers to that when the finished copper gasket 14 is in use, the direction in which the lubricating oil is moved by the rotation and centrifugation of the gear is the same, and the entry section 811 is inserted into the arc guide protrusion 701 at an obtuse angle.

[0026] Working principle: Due to the multiple superposition of the acceleration mechanisms 81, when the rotational centrifugal force is large, the buffering effect of the starting end of the curved guide protrusion 701 is weak, and the lubricating oil with outward moving force will gradually flow to the multiple acceleration mechanisms 81, and with the guidance of the entry section 811 and the acceleration section 812, it flows in slowly with a large arc, and with the high-speed circulation of a small arc and the partial confluence with 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 higher speed conditions.

[0027] In order to achieve lubrication of the central cross-axis part of the gasket, a lubricating structure 9 is also provided on the inner side of the circulating cavity die-casting structure 7, and the lubricating structure 9 includes a lubricating protrusion 901, and the end of the lubricating protrusion 901 is connected to the liquid storage protrusion 702, and the other end of the lubricating protrusion 901 is in contact with the side wall of the die-casting cavity. Multiple blocking mechanisms 92 are provided on both sides of the lubricating protrusion 901, and the multiple blocking mechanisms 92 are symmetrically distributed on both sides of the lubricating protrusion 901. The blocking mechanism 92 includes a curved input section 921 and an inner blocking section 922, and the inner blocking section 922 is a curved trajectory. The flow direction of the lubricating oil at the curved input end of the inner blocking section 922 is opposite to the direction of the lubricating oil input toward the center of the lubricating protrusion 901, and the direction of the lubricating oil entering the inlet of the curved input section 921 is the same as the direction of the lubricating oil input toward the center of the lubricating protrusion 901.

[0028] Working principle: The shaft lubrication protrusion 901 can engrave a cavity connected to 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 causes diversion in the output direction, and then cooperates with the inflow of the curved input section 921 and the outflow of the inner blocking section 922. Since the inner blocking section 922 is in the opposite direction to the shaft lubrication protrusion 901, the output is restricted, and the output amount of the lubricating oil is controlled to extend the lubrication time and the storage time of the lubricating oil.

[0029] Due to the design of the above-mentioned raised part, in order to ensure the generation of complete concave patterns, a relatively large amount of copper material needs to be input. In order to cut off the excess copper material, a die-casting auxiliary structure 10 is provided in the upper half of the die-casting upper template 5. The die-casting auxiliary structure 10 includes a driving hydraulic rod 101. The driving hydraulic rod 101 is located at the center of the connecting sleeve 4. The driving end of the connecting sleeve 4 penetrates through the die-casting upper template 5 and is connected with a driving column 102. The driving column 102 penetrates through the center of the die-casting upper template 5.

[0030] The die-casting auxiliary structure 10 further includes a spiral protrusion 109 fixed to the outer periphery of the driving column 102. A rotating sleeve 110 is sleeved between the outer peripheries of the plurality of spiral protrusions 109. A spiral cavity adapted to the spiral protrusion 109 is provided on the inner wall of the rotating sleeve 110. A fixing rod 111 is connected to the outer periphery of the rotating sleeve 110. One end of the fixing rod 111 is connected with a curved saw 112. A concave cavity is provided on the outer periphery of the die-casting upper template 5. An overflow hole 113 is communicated between the concave cavity and the die-casting cavity. The overflow hole 113 is used to discharge the 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 subsequent grinding difficulty. The outer side of the curved saw 112 is in a form with a gradually increasing diameter. A grinding sheet 114 is integrally formed at the bottom of the curved saw 112. The grinding sheet 114 is designed with a gradually increasing thickness. The connection part between the grinding sheet 114 and the bottom of the curved saw 112 is connected by an elastic material, and the bottom side of the elastic material is bonded with a friction metal sheet.

[0031] Working principle: During die-casting, the excess material is discharged through the overflow hole 113. When the temperature drops and is initially shaped, at this time, the driving hydraulic rod 101 operates, driving the driving column 102 to descend, causing the spiral protrusion 109 to descend. Cooperating with the spiral cavity, the rotating sleeve 110 rotates. Since the outer side of the curved saw 112 is in a form with a gradually increasing diameter, the curved saw 112 gradually contacts and cuts the overflowing part with an increasing contact area, reducing the cutting difficulty. At the same time, after cutting, the grinding sheet 114 gradually contacts the cut part. The elastic design enables it to perform rough grinding on the cut part, reducing the subsequent grinding difficulty.

[0032] Since during die-casting, the material is liquid, although the lubricating shaft protrusion 901 fits against 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 further includes a circular sleeve 103. A connecting rod 104 is connected between the inner wall of the circular sleeve 103 and the driving column 102. A plurality of connecting rods 104 are connected to the driving column 102. Pressing blocks 105 are provided on both the upper and lower sides of the circular sleeve 103. An anti-blocking needle 106 is installed on one side of the upper pressing block 105. The anti-blocking needle 106 penetrates through the die-casting upper template 5. A notch adapted to the anti-blocking needle 106 is provided at the end of the lubricating shaft protrusion 901.

[0033] On both sides of the two pressing blocks 105 close to the side of the circular sleeve 103, a ramp surface design is adopted. The outer periphery of the circular sleeve 103 is in contact with the ramp surface. Between one side of the pressing block 105 and the die-casting upper template 5, a telescopic rod 107 is provided. The telescopic rod 107 is composed of a telescopic tube and a telescopic sleeve. A bent connecting rod 108 is connected between the two pressing blocks 105 on the same axial side.

[0034] Working principle: The lifting and moving of the driving column 102 drives the circular sleeve 103 to lift and move. Since the ramp surface can be squeezed during the lifting process of the circular sleeve 103, the anti-blocking needle 106 can be moved. When the circular sleeve 103 descends, it squeezes the lower pressing block 105 to move outward, so that the anti-blocking needle 106 is inserted into the notch of the lubricating shaft protrusion 901, thereby avoiding the generation of a film and the occurrence of the situation of requiring secondary repair. When the circular sleeve 103 ascends, it squeezes the upper pressing block 105 to move inward, so that the anti-blocking needle 106 is separated from the notch of the lubricating shaft protrusion 901, which can not affect demoulding and is convenient for taking out the die-cast copper gasket.

[0035] It should be noted that the distance of its lifting and moving matches the above-mentioned spiral protrusion 109 and the spiral cavity, so that demoulding is carried out during the cutting process, and reset is realized during the descending process, which is convenient for continuous processing and use.

[0036] In order to further improve the stability, a stabilizing mechanism 18 is also provided between the two pressing blocks 105. The stabilizing mechanism 18 includes an inner chute 181 and a stabilizing member 182. The inner chute 181 is opened on the outer periphery of the circular sleeve 103. The stabilizing member 182 is composed of a fitting plate 1821 and a bent slope plate 1822. The fitting plate 1821 is in the form of a straight plate, and the fitting plate 1821 is in contact with the inner wall of the circular sleeve 103. The bent slope plate 1822 is in the form of an inclined arc, and the bent slope plate 1822 is adapted to the inner wall of the inner chute 181 and is slidably connected. A protruding edge portion 13 adapted to the outer periphery of the circular sleeve 103 is also provided on the side of the pressing block 105.

[0037] Due to the straight plate fitting of the fitting plate 1821, the stability during the lifting process of the circular sleeve 103 can be ensured. And the sliding connection between the bent slope plate 1822 and the inner chute 181 and the extrusion cooperation between the circular sleeve 103 and the pressing block 105 realize double stable extrusion driving, improve its stability and at the same time improve the service life.

[0038] The embodiments disclosed in the present invention are the preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention according to the above embodiments and make different extensions and changes, but as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, It includes a die-casting body (1), on which a die-casting table (2) is arranged. Above the die-casting table (2), a die-casting hydraulic rod (3) fixed to the die-casting body (1) is provided. The driving end of the die-casting hydraulic rod (3) is connected with a connecting sleeve (4). At the bottom of the connecting sleeve (4), a die-casting upper template (5) is provided. At the bottom of the die-casting upper template (5), a die-casting lower template (6) is provided. A die-casting cavity is formed between the adjacent sides of the die-casting upper template (5) and the die-casting lower template (6). On the side of the top wall of the die-casting cavity where the die-casting upper template (5) is located, a circulating cavity die-casting structure (7) is provided. The circulating cavity die-casting structure (7) includes a plurality of mutually connected arc-shaped guiding protrusions (701). The arc-shaped guiding protrusions (701) are in a curve trajectory with a diameter decreasing from large to small in the direction of gear rotation. On the outside of the circulating cavity die-casting structure (7), a rotation acceleration structure (8) is also provided. The rotation acceleration structure (8) includes a plurality of acceleration mechanisms (81). The acceleration mechanisms (81) are in the shape of curved cylinders with a curve trajectory. The plurality of acceleration mechanisms (81) are sequentially stacked and connected from the inside to the outside. On the inside of the circulating cavity die-casting structure (7), a shaft lubricating structure (9) is also provided. The shaft lubricating structure (9) includes a shaft lubricating protrusion (901). On both sides of the shaft lubricating protrusion (901), a plurality of blocking mechanisms (92) are provided. In the upper half of the die-casting upper template (5), a die-casting auxiliary structure (10) is provided.

2. The die-casting molding machine for manufacturing copper-cast fittings of an automotive differential according to claim 1, characterized in that, The circulating cavity die-casting structure (7) includes a plurality of liquid storage convex parts (702). The liquid storage convex parts (702) are located near the center. The ends of the plurality of arc-shaped guiding protrusions (701) are all connected with the liquid storage convex parts (702). A complete annular track is formed between the plurality of arc-shaped guiding protrusions (701) and the liquid storage convex parts (702).

3. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, The acceleration mechanism (81) is composed of an inlet section (811) and an acceleration section (812). The acceleration section (812) is inserted into the arc-shaped guiding protrusion (701) at an acute angle, and the conveying direction is the same as the conveying direction of the rear section of the arc-shaped guiding protrusion (701). The inlet section (811) is inserted into the arc-shaped guiding protrusion (701) at an obtuse angle direction.

4. A die casting machine for manufacturing copper casting fittings of an automotive differential, characterized in that, The end of the shaft lubricating protrusion (901) is connected with the liquid storage convex part (702). The other end of the shaft lubricating protrusion (901) is attached to the side wall of the die-casting cavity. The plurality of blocking mechanisms (92) are symmetrically distributed on both sides of the shaft lubricating protrusion (901). The blocking mechanism (92) includes an arc-shaped input section (921) and an inner blocking section (922). The inner blocking section (922) is in an arc-shaped trajectory, and the direction of the arc input end is opposite to the direction of the shaft lubricating protrusion (901) towards the center input direction. The inlet direction of the arc-shaped input section (921) is the same as the direction of the shaft lubricating protrusion (901) towards the center input direction.

5. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, The die-casting auxiliary structure (10) includes a driving hydraulic rod (101). The driving hydraulic rod (101) is located at the center of the connecting sleeve (4). The driving end of the connecting sleeve (4) penetrates through the die-casting upper template (5) and is connected with a driving column (102). The driving column (102) penetrates through the center of the die-casting upper template (5).

6. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, The die-casting auxiliary structure (10) further includes a round sleeve (103). A connecting rod (104) is connected between the inner wall of the round sleeve (103) and the driving column (102). A plurality of the connecting rods (104) are connected to the driving column (102). Pressing blocks (105) are arranged on both the upper and lower sides of the round sleeve (103). An anti-blocking needle (106) is installed on one side of the upper pressing block (105). The anti-blocking needle (106) penetrates the die-casting upper template (5). A notch adapted to the anti-blocking needle (106) is provided at the end of the lubricating shaft protrusion (901).

7. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, Both sides of the two pressing blocks (105) close to the round sleeve (103) are designed as inclined planes. An expansion rod (107) is arranged between one side of the pressing block (105) and the die-casting upper template (5). The expansion rod (107) is composed of an expansion tube and an expansion sleeve. A bent connecting rod (108) is connected between the two pressing blocks (105) on the same axial side.

8. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, A stabilizing mechanism (18) is further arranged between the two pressing blocks (105). The stabilizing mechanism (18) includes an inner chute (181) and a stabilizing part (182). The inner chute (181) is opened on the outer periphery of the round sleeve (103). The stabilizing part (182) is composed of a fitting plate (1821) and a bent slope plate (1822). The fitting plate (1821) is in a straight plate form and fits with the inner wall of the round sleeve (103). The bent slope plate (1822) is in an inclined curved arc form. The bent slope plate (1822) is adapted to the inner wall of the inner chute (181) and is slidably connected.

9. A die-casting molding machine for manufacturing copper-cast fittings of an automotive differential, characterized in that, The die-casting auxiliary structure (10) further includes a spiral protrusion (109) fixed to the outer periphery of the driving column (102). A rotating sleeve (110) is sleeved between the outer peripheries of the plurality of spiral protrusions (109). A spiral cavity adapted to the spiral protrusion (109) is opened on the inner wall of the rotating sleeve (110). A fixed rod (111) is connected to the outer periphery of the rotating sleeve (110). One end of the fixed rod (111) is connected to a bent arc saw (112).

10. A die-casting molding machine for manufacturing copper cast fittings of an automotive differential, characterized in that, A concave cavity is opened on the outer periphery of the die-casting upper template (5). An overflow hole (113) is communicated between the concave cavity and the die-casting cavity. The outer side of the bent arc saw (112) is in a form with a gradually increasing diameter. A grinding sheet (114) is integrally formed at the bottom of the bent arc saw (112).

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