Servo drive type die casting machine

Abstract

The invention discloses a servo drive type die-casting machine, which belongs to the field of metal casting and comprises a machine tool, a base, a first support, a support and a second support are sequentially fixed on the upper surface of the machine tool from left to right, the top of the first support is rotatably connected with a first injection pipe, and an injection pipe is integrally formed at the left end of the first injection pipe. Through the arrangement of the servo motor and a series of transmission mechanisms, such as a crank, a connecting rod, a bevel gear and an incomplete gear, the movement of the first piston and the second piston and the rotation and communication state of the first injection pipe and the second injection pipe can be accurately controlled through the synergistic effect of the servo motor, the connecting rod, the bevel gear, the incomplete gear and the like; the injection pipe and the fixed valve are designed in a matched mode, so that the first injection pipe can be intermittently communicated with the interior of the fixed die, and the situation that in the die-casting process, the molten metal in the fixed die and the movable die flows back, and pressure is relieved is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, and in particular to a servo-driven die-casting machine. Background Art

[0002] The servo-driven die-casting machine is an advanced die-casting equipment, which is mainly used to inject molten metal into the mold and obtain the required die-casting parts after cooling and molding.

[0003] Traditional die-casting machines mostly use pneumatic or hydraulic drive methods, with relatively low control accuracy, making it difficult to achieve precise control of the molten metal injection process, resulting in unstable product quality and poor consistency.

[0004] It is impossible to effectively avoid the backflow and pressure release of molten metal, which affects the die-casting quality and production efficiency; and the feeding and injection systems are relatively complex, and the coordination between the various components is poor, resulting in slow extraction and injection of molten metal and low production efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a servo-driven die-casting machine, which solves the problems raised in the above-mentioned background technology.

[0006] Technical solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a servo-driven die-casting machine includes a machine tool, on the upper surface of the machine tool, a base, a bracket 1, a support, and a bracket 2 are fixed in sequence from left to right, the top of the bracket 1 is rotatably connected to a shot pressure tube 1, the left end of the shot pressure tube 1 is integrally formed with an injection tube, the outer surface of the injection tube is rotatably connected to a fixed valve, the left side of the fixed valve is connected to a fixed mold, the left side of the fixed mold is provided with a movable mold, the upper surface of the outer surface of the shot pressure tube 1 is connected to a shot pressure tube 2, and the outer surface of the shot pressure tube 2 is connected to the upper surface of the shot pressure tube 1. The front and rear sides of the surface are both connected with material pipe 1, the opposite ends of the two material pipes 1 are both connected with material pipe 2, the right ends of the two material pipes 2 are commonly connected with material pipe 3, the interior of the injection and pressure tube 1 is movably connected with piston 1, the right end of the piston 1 is fixedly connected with fixed rod 1, the fixed rod 1 is located on the right side of the injection and pressure tube 1, and is rotatably connected with a connecting rod, the right end of the connecting rod is rotatably connected with a crank, the rear of the outer surface of the crank is rotatably connected with an L frame, the L frame is fixedly connected to the rear surface of the support, a turntable is fixed at the rear end of the crank, and a servo motor is fixed on the rear surface of the turntable;

[0007] The front end of the servo motor output shaft is fixedly connected to the rear end of the crank, a bevel gear 1 is fixed to the front end of the crank, and a bevel gear 2 is meshedly connected to the bottom of the bevel gear 1, two bevel gears 3 are symmetrically fixed to the outer surface of the injection tube 1, and an incomplete gear is arranged between the two bevel gears 3 below the injection tube 1, a transmission wheel is fixed to the bottom of the incomplete gear and the bottom of the bevel gear 2, and a transmission belt is commonly arranged on the outer surfaces of the two transmission wheels, a piston 2 is slidably connected to the inside of the injection tube 2, a fixing rod 2 is fixed to the top of the piston 2, and two fixing rings are fixed to the inner side of the base, guide grooves are provided on the opposite sides of the two fixing rings, guide rods are commonly slidably connected to the inside of the two guide grooves, and the outer surface of the guide rod is fixedly connected to the top of the fixing rod 2.

[0008] Furthermore, an injection port is formed through the left end of the injection tube, a valve port is formed through the interior of the fixed valve, and the valve port is communicated with the injection port.

[0009] Furthermore, the material pipe three is rotatably connected to the inside of the bracket two, the right end of the material pipe three passes through the right side of the bracket two, and is rotatably connected with a switching tube, the switching tube is fixedly connected to the bracket two, and the material pipe three, the injection tube one, and the two fixed rings are coaxial.

[0010] Furthermore, the guide groove is a wave-shaped groove composed of a plurality of connected arc grooves.

[0011] Furthermore, the incomplete gear and the second bevel gear are connected via the two transmission wheels and the transmission belt.

[0012] Furthermore, the incomplete gear is three-phase matched with the two helical gears.

[0013] Furthermore, the material pipe three is connected to an external insulation furnace through the transfer tube, and the movable mold is driven by an external mold clamping device.

[0014] Furthermore, the fixing ring is a circular ring structure, the outer surface of the piston 1 is in contact with the inner surface of the injection tube 1, and the outer surface of the piston 2 is in contact with the inner surface of the injection tube 2.

[0015] The beneficial effects of a servo-driven die-casting machine of the present invention are:

[0016] (1) The present invention can accurately control the movement of piston 1 and piston 2, as well as the rotation and connection state of injection pressure tube 1 and injection pressure tube 2 by setting a servo motor and a series of transmission mechanisms, such as the coordinated action of a crank, a connecting rod, a bevel gear, an incomplete gear, etc., so as to achieve accurate control of the injection amount, injection speed and injection time of the molten metal, thereby improving product quality and consistency;

[0017] Through the coordinated design of the injection tube and the fixed valve, the injection tube can be intermittently connected with the inside of the fixed mold, which effectively avoids the backflow and pressure relief of the metal liquid inside the fixed mold and the movable mold during the die-casting process, and improves the stability and reliability of the die-casting process.

[0018] (2) In the present invention, when the injection tube 1 is separated from the interior of the fixed mold, the injection tube 2 is connected to the material tube 1. At this time, the piston 1 slides to the right, which will generate negative pressure in the injection tube. The molten metal is extracted from the external insulation furnace through the material tube 1, the material tube 2, and the material tube 3. This process utilizes the pressure difference generated by the piston movement to realize the automatic material suction function, which can quickly and efficiently complete the extraction and injection process of the molten metal, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the machine tool in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the first injection pressure tube and the second injection pressure tube in the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the left view structure;

[0025] Figure 6 For the present invention Figure 4 A schematic diagram of a partial cross-sectional structure;

[0026] Figure 7 It is a left-side structural schematic diagram of the fixing ring and the injection pressure tube 1 in the present invention.

[0027] In the figure: 1. machine tool; 2. base; 3. bracket 1; 4. support; 5. bracket 2; 6. injection tube 1; 7. injection tube; 71. injection port; 8. fixed valve; 81. valve port; 9. fixed mold; 10. movable mold; 11. injection tube 2; 12. material tube 1; 13. material tube 2; 14. material tube 3; 15. transfer tube; 16. piston 1; 17. fixed rod 1; 18. connecting rod; 19. crank; 20. turntable; 21. servo motor; 22. bevel gear 1; 23. bevel gear 2; 24. bevel gear 3; 25. incomplete gear; 26. transmission wheel; 27. transmission belt; 28. piston 2; 29. ​​fixed rod 2; 30. fixed ring; 31. guide groove; 32. guide rod; 33. L frame. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0029] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-7 A servo-driven die-casting machine comprises a machine tool 1. A base 2, a bracket 3, a support 4, and a bracket 2 5 are fixed on the upper surface of the machine tool 1 from left to right in sequence. The top of the bracket 3 is rotatably connected to a shot pressure tube 6. An injection tube 7 is integrally formed at the left end of the shot pressure tube 6. A fixed valve 8 is rotatably connected to the outer surface of the injection tube 7. A fixed mold 9 is connected to the left side of the fixed valve 8. A movable mold 10 is arranged on the left side of the fixed mold 9. The movable mold 10 is driven by an external mold clamping device. The mold clamping device controls the movement of the movable mold 10. A shot pressure tube 2 11 is connected to the upper surface of the outer surface of the shot pressure tube 6. The outer surface of the shot pressure tube 2 11 is It is connected with a material pipe 12, and the opposite ends of the two material pipes 12 are connected with a material pipe 2 13, and the right ends of the two material pipes 2 13 are commonly connected with a material pipe 3 14. A piston 16 is movably connected inside the injection pressure pipe 6, and a fixed rod 17 is fixedly connected to the right end of the piston 16. The fixed rod 17 is located on the right side of the injection pressure pipe 6 and is rotatably connected with a connecting rod 18. The right end of the connecting rod 18 is rotatably connected with a crank 19. The rear of the outer surface of the crank 19 is rotatably connected with an L frame 33, and the L frame 33 is fixedly connected to the rear surface of the support 4. A turntable 20 is fixed to the rear end of the crank 19, and a servo motor 21 is fixed to the rear surface of the turntable 20;

[0031] The front end of the output shaft of the servo motor 21 is fixedly connected to the rear end of the crank 19, a bevel gear 1 22 is fixed to the front end of the crank 19, and a bevel gear 23 is meshed and connected to the bottom of the bevel gear 1 22. Two bevel gears 3 24 are symmetrically fixed to the outer surface of the injection tube 1 6, and an incomplete gear 25 is arranged between the two bevel gears 3 24 below the injection tube 1 6. A transmission wheel 26 is fixed to the bottom of the incomplete gear 25 and the bottom of the bevel gear 2 23. A transmission belt 27 is commonly arranged on the outer surfaces of the two transmission wheels 26. A piston 28 is slidably connected to the inside of the injection tube 2 11, and a fixing rod 29 is fixed to the top of the piston 28. Two fixing rings 30 are fixed to the inner side of the base 2, and guide grooves 31 are provided on the opposite sides of the two fixing rings 30. A guide rod 32 is slidably connected to the inside of the two guide grooves 31, and the outer surface of the guide rod 32 is fixedly connected to the top of the fixing rod 29.

[0032] During die casting, the servo motor 21 runs, driving the crank 19 to rotate. The rotation of the crank 19 pushes and pulls the fixed rod 17 and the piston 16 through the connecting rod 18, so that the piston 16 slides left and right. At the same time, the incomplete gear 25 rotates under the sequential transmission of the bevel gear 1 22, the bevel gear 2 23, the transmission wheel 26, and the transmission belt 27. The incomplete gear 25 rotates continuously and intermittently meshes with the two bevel gears 3 24 in sequence. Under the transmission of the two bevel gears 3 24, the injection tube 1 6 axially rotates forward and reverse, and the injection tube 7 rotates accordingly. Under the obstruction of the fixed valve 8, the injection tube 1 6 is intermittently connected with the inside of the fixed mold 9. At the same time, the injection tube 1 6 drives the injection tube 2 11, the fixed rod 29, and the guide rod 32 to swing accordingly, and the guide rod 32 When sliding along the guide groove 31 of the wave, the piston 28 will be driven by the fixed rod 29 to slide back and forth inside the injection tube 2 11, so that the inside of the material tube 12 is intermittently connected with the inside of the injection tube 2 11; when the injection tube 16 is separated from the inside of the fixed mold 9, the injection tube 2 11 is connected with the material tube 12, and the piston 16 slides to the right, which will cause the negative pressure in the injection tube to extract the molten metal in the insulation furnace through the material tube 12, the material tube 2 13, and the material tube 3 14 in turn. Then, when the piston 16 slides to the left, the piston 28 slides to block the material tube 12, and the inside of the injection tube 6 is connected with the inside of the fixed mold 9. Under the push of the piston 16, the molten metal is injected into the fixed mold 9, so that after adding materials and pressurizing under repeated operations, it waits for cooling and molding.

[0033] Reference Figure 2-4 An injection port 71 is penetrated through the left end of the injection tube 7, and a valve port 81 is penetrated through the interior of the fixed valve 8. The valve port 81 is communicated with the injection port 71. When the injection tube 6 drives the injection tube 7 to rotate, the injection port 71 rotates and intersects with the valve port 81, which will block the interior of the injection tube 6 from the interior of the fixed mold 9, thereby preventing the metal liquid from flowing back and depressurizing the interior of the fixed mold 9 and the movable mold 10.

[0034] Reference Figure 2 The material pipe three 14 is rotatably connected to the inside of the bracket two 5, the right end of the material pipe three 14 passes through the right side of the bracket two 5, and is rotatably connected with a transfer tube 15, the transfer tube 15 is fixedly connected to the bracket two 5, the material pipe three 14, the injection and pressure tube one 6, and the two fixed rings 30 are coaxial, and the material pipe three 14 is connected to the external insulation furnace through the transfer tube 15; when the injection and pressure tube one 6 rotates, it will drive the material pipe one 12, the material pipe two 13 and the material pipe three 14 on both sides to rotate synchronously, and keep connected to the external insulation furnace under the connection of the transfer tube 15 to ensure the supply of molten metal.

[0035] Reference Figure 6-7 The guide groove 31 is a wave-shaped groove composed of a plurality of arc grooves connected to each other. The incomplete gear 25 and the helical gear 2 23 are connected to each other through two transmission wheels 26 and a transmission belt 27.

[0036] Reference Figure 6 The incomplete gear 25 is matched with the two helical gears 24, and intermittently meshes with each other to achieve reciprocating swing.

[0037] Reference Figure 2-6 The fixing ring 30 is a circular ring structure, the outer surface of the piston 16 is in contact with the inner surface of the injection tube 16, and the outer surface of the piston 28 is in contact with the inner surface of the injection tube 2 11.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A servo-driven die-casting machine, comprising a machine tool (1), characterized in that: The upper surface of the machine tool (1) is fixed with a base (2), a bracket 1 (3), a support (4), and a bracket 2 (5) in sequence from left to right. The top of the bracket 1 (3) is rotatably connected to an injection tube 1 (6). The left end of the injection tube 1 (6) is integrally formed with an injection tube (7). The outer surface of the injection tube (7) is rotatably connected to a fixed valve (8). The left side of the fixed valve (8) is connected to a fixed mold (9). The left side of the fixed mold (9) is provided with a movable mold (10). The upper surface of the outer surface of the injection tube 1 (6) is connected to an injection tube 2 (11). The front and rear sides of the outer surface of the injection tube 2 (11) are both connected to a material tube 1 (12). The two opposite ends of the material tubes 1 (12) are both connected to a material tube 2. (13), the right ends of the two material pipes (13) are commonly connected to a material pipe (14), the injection pressure pipe (6) is movably connected to a piston (16), the right end of the piston (16) is fixedly connected to a fixing rod (17), the fixing rod (17) is located on the right side of the injection pressure pipe (6), and is rotatably connected to a connecting rod (18), the right end of the connecting rod (18) is rotatably connected to a crank (19), the rear of the outer surface of the crank (19) is rotatably connected to an L frame (33), the L frame (33) is fixedly connected to the rear surface of the support (4), the rear end of the crank (19) is fixed with a turntable (20), and the rear surface of the turntable (20) is fixed with a servo motor (21); The front end of the output shaft of the servo motor (21) is fixedly connected to the rear end of the crank (19); a bevel gear 1 (22) is fixed to the front end of the crank (19); the bottom of the bevel gear 1 (22) is meshingly connected to a bevel gear 2 (23); two bevel gears 3 (24) are symmetrically fixed to the outer surface of the injection tube 1 (6); an incomplete gear (25) is arranged between the two bevel gears 3 (24) below the injection tube 1 (6); a transmission wheel is fixed to the bottom of the incomplete gear (25) and the bottom of the bevel gear 2 (23). (26), the outer surfaces of the two transmission wheels (26) are commonly provided with a transmission belt (27), the second injection tube (11) is slidably connected with a second piston (28), the top of the second piston (28) is fixed with a second fixing rod (29), the inner side of the base (2) is fixed with two fixing rings (30), the opposite sides of the two fixing rings (30) are provided with guide grooves (31), the two guide grooves (31) are commonly slidably connected with a guide rod (32), and the outer surface of the guide rod (32) is fixedly connected with the top of the second fixing rod (29).

2. A servo-driven die-casting machine according to claim 1, characterized in that: An injection port (71) is formed through the left end of the injection tube (7), and a valve port (81) is formed through the interior of the fixed valve (8), wherein the valve port (81) is communicated with the injection port (71).

3. The servo-driven die-casting machine according to claim 1, characterized in that: The material pipe three (14) is rotatably connected to the inside of the bracket two (5), the right end of the material pipe three (14) passes through the right side of the bracket two (5), and is rotatably connected with a transfer tube (15), the transfer tube (15) is fixedly connected to the bracket two (5), the material pipe three (14), the injection tube one (6), and the two fixing rings (30) are coaxial.

4. The servo-driven die-casting machine according to claim 1, characterized in that: The guide groove (31) is a wave-shaped groove composed of a plurality of connected arc grooves.

5. The servo-driven die-casting machine according to claim 1, characterized in that: The incomplete gear (25) is connected to the second bevel gear (23) via two transmission wheels (26) and a transmission belt (27).

6. The servo-driven die-casting machine according to claim 1, characterized in that: The incomplete gear (25) is matched with the two bevel gears (24).

7. The servo-driven die-casting machine according to claim 3, characterized in that: The material pipe three (14) is connected to an external heat preservation furnace via the transfer pipe (15), and the movable mold (10) is driven by an external mold clamping device.

8. The servo-driven die-casting machine according to claim 1, characterized in that: The fixing ring (30) is a circular ring structure, the outer surface of the piston one (16) fits with the inner surface of the injection tube one (6), and the outer surface of the piston two (28) fits with the inner surface of the injection tube two (11).

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