A mold clamping device for die casting machine

Abstract

The invention discloses a mold clamping device for a die-casting machine, which belongs to the field of metal casting and comprises a ring frame, wherein a claw ring is rotatably connected inside the ring frame, an annular groove is provided on the inner surface of the claw ring, two claw grooves are penetrated and provided on the right side of the claw ring, the two claw grooves are both communicated with the inside of the annular groove, a claw rod is slidably connected inside the claw groove, and a connecting frame is fixed on the outer surface of the claw rod located inside the annular groove. The invention drives the claw ring to rotate by a motor to move the lifting frame toward the mold, and after the pressure block contacts the surface of the mold, the pressure block shrinks and moves inwardly toward the inside of the lifting frame as the lifting frame continues to move, and at the same time drives the locking plate to move laterally through the gear cylinder transmission until the two sides of the two molds are contacted and locked, so as to automatically adapt to the thickness of the two molds after being merged; the locking plate clamps and fixes the two molds, which can effectively prevent the molds from being opened under the action of the metal liquid pressure, ensure the stability of the molds during the die-casting process, and improve the quality of the castings.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular to a die clamping device for a die casting machine. Background Art

[0002] The clamping device of the die-casting machine is a key component in the die-casting machine. Its main function is to realize the opening and closing action of the mold and provide sufficient clamping force during the die-casting process to ensure that the mold is tightly closed to prevent molten metal leakage.

[0003] The traditional die-casting machine clamping device has some shortcomings. The clamping stability of the traditional clamping device is insufficient. Under the pressure of the molten metal, the mold is easily stretched open, affecting the quality of the casting. The operation is cumbersome and often requires a lot of manual intervention, resulting in low production efficiency. On the other hand, it has poor adaptability to molds and is difficult to adapt to molds of different sizes and thicknesses, limiting the versatility of the die-casting machine. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a mold clamping device for a die-casting machine, which solves the problems raised in the above-mentioned background technology.

[0005] Technical solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a clamping device for a die-casting machine includes a ring frame, a claw ring is rotatably connected inside the ring frame, an annular groove is provided on the inner surface of the claw ring, two claw grooves are provided through the right side of the claw ring, both of the two claw grooves are connected to the inside of the annular groove, a claw rod is slidably connected inside the claw groove, a connecting frame is fixed on the outer surface of the claw rod inside the annular groove, a lifting frame is fixed on the end of the connecting frame away from the claw rod, two sliding grooves are provided on the upper and lower inner side walls of the ring frame, sliding rods are slidably connected inside the sliding grooves, the left and right sides of the lifting frame are respectively fixedly connected to the adjacent sliding rods, a pressure block is slidably connected inside the lifting frame, a spring is fixed on the lower surface of the pressure block, and the top of the spring is fixedly connected to the upper surface of the lifting frame. The outer surfaces of the two fixing rods are slidably connected to the two tooth plates, and the two gear cylinders are rotatably connected to the inside of the lifting frame, and the tooth plate is rotatably connected to a pry frame at one end away from the spring, and a movable groove one is provided inside the pry frame, and a movable rod one is movably connected inside the movable groove one, and two slideways are provided on the front and rear surfaces of the lifting frame, and a sliding plate is slidably connected inside the two slideways corresponding to the front and rear, and a locking plate is fixed on the lower surface of the sliding plate, and two vertical frames are fixed on the side of the locking plate away from the pressure block, and a movable groove two is provided inside the vertical frame, and a movable rod two is movably connected inside the movable groove two, and the two movable rods two are fixedly connected to the bottom of the pry frame, a motor is fixed to the right side of the top of the ring frame, and a transmission wheel is fixed to the left end of the motor output shaft.

[0006] Furthermore, two side grooves are symmetrically provided on the left side of the ring frame, a screw rod is rotatably connected inside the side groove, a screw plate is threadedly connected to the outer surface of the screw rod, connecting rods are rotatably connected to the upper and lower ends of the screw plate, a lifting plate is fixed to the end of the connecting rod away from the screw plate, a guide rod is fixed to the right side of the lifting plate, two molds are commonly arranged on the outer surfaces of the four guide rods, an injection port is connected to the left side of the mold on the left side, a vertical rod is fixed to the outer surface of the lifting plate, and the vertical rod is slidably connected to the ring frame;

[0007] A base is fixed at the bottom of the ring frame, a bottom plate is fixed on the right side of the base, a bracket is fixed on the right end of the bottom plate, a hydraulic mechanism is arranged on the top of the bracket, and the left end of the hydraulic mechanism is fixedly connected to the mold on the right side.

[0008] Furthermore, a washer is provided on the outer surface of the guide rod, and the washer is located between the guide rod on the left side and the lifting plate.

[0009] Furthermore, the opposite sides of the two locking plates are respectively fitted with the back sides of the two molds, and the opposite sides of the two pressing blocks are fitted with the outer surfaces of the two molds.

[0010] Furthermore, the opposite ends of the two screw rods penetrate to the outside of the ring frame and are fixed with gears. The outer surface of the ring frame is rotatably connected with a gear ring, and the left side of the gear ring is meshed with the two gears.

[0011] Furthermore, the outer surface of the screw plate fits with the inner surface of the side groove.

[0012] Furthermore, the lifting frame and the pressing block are both U-shaped structures, the two gear cylinders are respectively located on the left and right sides of the pressing block, the gear cylinder is located below the tooth plate, and the gear cylinder is respectively meshed and connected with the pressing block and the tooth plate.

[0013] The beneficial effects of the clamping device for a die-casting machine of the present invention are as follows:

[0014] (1) During the mold closing operation, the present invention drives the claw ring to rotate through the motor to move the lifting frame toward the mold. After the pressure block contacts the surface of the mold, as the lifting frame continues to move, the pressure block moves inwardly toward the inside of the lifting frame. At the same time, the locking plate is driven by the gear cylinder to move horizontally until the two sides of the two molds are contacted and locked, and can automatically adapt to the thickness of the two molds after being merged; the locking plate clamps and fixes the two molds, which can effectively prevent the molds from being stretched open under the pressure of the molten metal, ensure the stability of the mold during the die-casting process, and improve the quality of the casting.

[0015] (2) The present invention rotates the toothed ring to rotate the screw rod under the gear transmission, thereby moving the screw plate and driving the lifting plate to move through the connecting rod, thereby adjusting the positions of the four guide rods; this makes it possible to adapt to molds of different sizes and positions, thereby improving the versatility and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a left-side structural schematic diagram of the present invention;

[0019] Figure 3 It is a cross-sectional structural schematic diagram of the ring frame and the claw switch in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the lifting frame and the connecting frame in the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the lifting frame in the present invention;

[0022] Figure 6 It is a left-side cross-sectional structural schematic diagram of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the claw ring in the present invention.

[0024] In the figure: 1, ring frame; 2, base; 3, bottom plate; 4, bracket; 5, hydraulic mechanism; 6, mold; 7, guide rod; 8, injection port; 9, gasket; 10, claw ring; 11, ring groove; 12, claw groove; 13, claw rod; 14, connecting frame; 15, lifting frame; 16, slide groove; 17, slide rod; 18, pressure block; 19, spring; 20, fixed rod; 21, tooth plate; 22, gear cylinder; 23, pry frame; 24, movable groove one; 25, movable rod one; 26, slideway; 27, slide plate; 28, lock plate; 29, vertical frame; 30, movable groove two; 31, movable rod two; 32, motor; 33, transmission wheel; 34, side groove; 35, screw rod; 36, screw plate; 37, connecting rod; 38, lifting plate; 39, vertical rod; 40, gear; 41, gear ring. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] Reference Figure 1-7 A clamping device for a die-casting machine comprises a ring frame 1, wherein a claw ring 10 is rotatably connected inside the ring frame 1, an annular groove 11 is provided on the inner surface of the claw ring 10, two claw grooves 12 are provided through the right side of the claw ring 10, the two claw grooves 12 are both connected to the inside of the annular groove 11, a claw rod 13 is slidably connected inside the claw groove 12, a connecting frame 14 is fixed on the outer surface of the claw rod 13 inside the annular groove 11, a lifting frame 15 is fixed on the end of the connecting frame 14 away from the claw rod 13, two sliding grooves 16 are provided on the upper and lower sides of the inner side wall of the ring frame 1, a sliding rod 17 is slidably connected inside the sliding groove 16, the left and right sides of the lifting frame 15 are respectively fixedly connected to the adjacent sliding rods 17, a pressing block 18 is slidably connected inside the lifting frame 15, a spring 19 is fixed on the lower surface of the pressing block 18, the top of the spring 19 is fixedly connected to the upper surface of the lifting frame 15, and two fixing rods 20 are fixed on the upper surface of the lifting frame 15. , the outer surfaces of the two fixed rods 20 are slidably connected to two tooth plates 21, the lifting frame 15 is rotatably connected to two gear cylinders 22, the tooth plate 21 is rotatably connected to the end of the spring 19, the pry frame 23 is provided with a movable groove 24, and the movable groove 24 is movably connected to a movable rod 25, the front and rear surfaces of the lifting frame 15 are provided with two slideways 26, and the two corresponding slideways 26 are slidably connected to a slide plate 27, a locking plate 28 is fixed to the lower surface of the slide plate 27, and two vertical frames 29 are fixed to the side of the locking plate 28 away from the pressure block 18, the vertical frame 29 is provided with a movable groove 2 30, and the movable groove 2 30 is movably connected to a movable rod 2 31, and the two movable rods 2 31 are fixedly connected to the bottom of the pry frame 23, a motor 32 is fixed to the right side of the top of the ring frame 1, and a transmission wheel 33 is fixed to the left end of the output shaft of the motor 32;

[0028] Two side grooves 34 are symmetrically provided on the left side of the ring frame 1, and a screw rod 35 is rotatably connected inside the side groove 34. A screw plate 36 is threadedly connected to the outer surface of the screw rod 35. The upper and lower ends of the screw plate 36 are rotatably connected to a connecting rod 37. A lifting plate 38 is fixed to the end of the connecting rod 37 away from the screw plate 36. A guide rod 7 is fixed to the right side of the lifting plate 38. A vertical rod 39 is fixed to the outer surface of the lifting plate 38. The vertical rod 39 is slidably connected to the ring frame 1. The opposite ends of the two screw rods 35 penetrate to the outside of the ring frame 1 and are fixed with gears 40. A gear ring 41 is rotatably connected to the outer surface of the ring frame 1, and the left side of the gear ring 41 is meshed with the two gears 40; a person can rotate the gear ring 41 to rotate the screw rod 35 under the transmission of the two gears 40, thereby moving the screw plate 36 and driving the lifting plate 38 to move through the connecting rod 37, thereby adjusting the positions of the four guide rods 7 to adapt to the use of molds 6 of different sizes and positions;

[0029] Two molds 6 are commonly arranged on the outer surfaces of the four guide rods 7. The left side of the mold 6 on the left side is connected with an injection port 8. A base 2 is fixed to the bottom of the ring frame 1. A bottom plate 3 is fixed to the right side of the base 2. A bracket 4 is fixed to the right end of the bottom plate 3. A hydraulic mechanism 5 is arranged on the top of the bracket 4. The left end of the hydraulic mechanism 5 is fixedly connected to the mold 6 on the right side.

[0030] When in use, the hydraulic mechanism 5 is used to push the mold 6 on the right side to merge with the mold 6 on the left side, and then the motor 32 is controlled to operate and drive the claw ring 10 to rotate through the transmission wheel 33. The claw groove 12 rotates to guide the claw rod 13 to make the connecting frame 14 and the lifting frame 15 move toward the mold 6, and the pressing block 18 contacts the surface of the mold 6, and then the lifting frame 15 continues to move. The pressing block 18 moves inwardly into the lifting frame 15, and at the same time, the gear plates 21 on both sides are driven by the gear cylinder 22 to move back and forth, thereby driving the pry frame 23 to pry the lock plate 28 with the movable rod 1 25 as the base point (when the pry frame 23 rotates, the movable groove 1 24 arranged inside it will rotate and slide on the outside of the movable rod 1 25), so that the lock plate 28 moves laterally along the slideway 26 through the slide plate 27 (the pry frame 23 pushes the lock plate 28 to move through the movable rod 2 31 at the bottom to resist the inner wall of the movable groove 2 30, and it rotates and slides on the inner wall of the movable groove 2 30), until the two sides of the two molds 6 are contacted and locked. At this time, Figure 1-5 As shown, the mold closing operation can be realized, and the thickness of the two molds 6 after the merger can be automatically adapted;

[0031] The molten metal is injected through the injection port 8. After cooling and forming, the hydraulic mechanism 5 retracts to bring the mold 6 on the right and the internally formed metal parts to the top of the base plate 3. The metal parts are removed by the demoulding mechanism. A transmission mechanism can be set at the base plate 3 for moving the metal parts.

[0032] Reference Figure 2-4 A gasket 9 is provided on the outer surface of the guide rod 7, and the gasket 9 is located between the left guide rod 7 and the lifting plate 38. Gaskets 9 of different thicknesses can be replaced according to the thickness of the two molds 6 to be molded, so that the two molds 6 are located in the middle of the two lifting frames 15.

[0033] Reference Figure 3-5 The opposite sides of the two locking plates 28 are respectively fitted with the back sides of the two molds 6, and the opposite sides of the two pressing blocks 18 are fitted with the outer surfaces of the two molds 6. The locking plates 28 clamp and fix the two molds 6 to prevent the molds 6 from being stretched open under the pressure of the molten metal.

[0034] Reference Figure 6 The outer surface of the screw plate 36 fits with the inner surface of the side groove 34 so that the side groove 34 limits it, so that the screw plate 36 can slide stably when the screw rod 35 rotates.

[0035] Reference Figure 4-5The lifting frame 15 and the pressing block 18 are both U-shaped structures. The two gear cylinders 22 are respectively located on the left and right sides of the pressing block 18. The gear cylinder 22 is located below the tooth plate 21. The gear cylinder 22 is meshed and connected with the pressing block 18 and the tooth plate 21 respectively.

[0036] 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 die clamping device for a die casting machine, comprising a ring frame (1), characterized in that: A claw ring (10) is rotatably connected inside the ring frame (1), and an annular groove (11) is provided on the inner surface of the claw ring (10). Two claw grooves (12) are provided through the right side of the claw ring (10), and both of the two claw grooves (12) are connected to the inside of the annular groove (11). A claw rod (13) is slidably connected inside the claw groove (12), and a connecting frame (14) is fixed on the outer surface of the claw rod (13) inside the annular groove (11). A lifting frame (15) is fixed on the end of the connecting frame (14) away from the claw rod (13). 1) Two slide grooves (16) are provided at the upper and lower parts of the inner wall, and a slide rod (17) is slidably connected inside the slide groove (16). The left and right sides of the lifting frame (15) are respectively fixedly connected to the adjacent slide rods (17). A pressure block (18) is slidably connected inside the lifting frame (15). A spring (19) is fixedly connected to the lower surface of the pressure block (18). The top of the spring (19) is fixedly connected to the upper surface of the lifting frame (15). Two fixed rods (20) are fixedly connected to the upper surface of the lifting frame (15). The two fixed rods The outer surface of the lifting frame (15) is slidably connected to two tooth plates (21), the lifting frame (15) is internally rotatably connected to two tooth cylinders (22), the tooth plate (21) is rotatably connected to a pry frame (23) at one end away from the spring (19), the pry frame (23) is internally provided with a movable groove (24), the movable groove (24) is internally movably connected to a movable rod (25), the front and rear surfaces of the lifting frame (15) are both provided with two slideways (26), the two corresponding slideways (26) are internally slidably connected to a sliding rod (25) at the inner surface of the lifting frame (15), and the sliding rod (25) is internally provided with a movable groove (24) at the inner surface of the lifting frame (15). A plate (27) is provided, a locking plate (28) is fixed on the lower surface of the slide plate (27), two vertical frames (29) are fixed on the side of the locking plate (28) away from the pressure block (18), a movable groove (30) is provided inside the vertical frame (29), a movable rod (31) is movably connected inside the movable groove (30), and the two movable rods (31) are fixedly connected to the bottom of the pry frame (23), a motor (32) is fixed on the right side of the top of the ring frame (1), and a transmission wheel (33) is fixed on the left end of the output shaft of the motor (32).

2. A mold clamping device for a die casting machine according to claim 1, characterized in that: Two side grooves (34) are symmetrically provided on the left side of the ring frame (1), a screw rod (35) is rotatably connected to the inside of the side groove (34), a screw plate (36) is threadedly connected to the outer surface of the screw rod (35), and connecting rods (37) are rotatably connected to the upper and lower ends of the screw plate (36), a lifting plate (38) is fixed to the end of the connecting rod (37) away from the screw plate (36), a guide rod (7) is fixed to the right side of the lifting plate (38), two molds (6) are commonly provided on the outer surfaces of the four guide rods (7), the left side of the mold (6) located on the left side is connected to the injection port (8), a vertical rod (39) is fixed to the outer surface of the lifting plate (38), and the vertical rod (39) is slidably connected to the ring frame (1); A base (2) is fixed at the bottom of the ring frame (1), a bottom plate (3) is fixed on the right side of the base (2), a bracket (4) is fixed at the right end of the bottom plate (3), a hydraulic mechanism (5) is arranged on the top of the bracket (4), and the left end of the hydraulic mechanism (5) is fixedly connected to the mold (6) on the right side.

3. A mold clamping device for a die casting machine according to claim 2, characterized in that: A washer (9) is provided on the outer surface of the guide rod (7), and the washer (9) is located between the guide rod (7) on the left side and the lifting plate (38).

4. A mold clamping device for a die casting machine according to claim 2, characterized in that: The opposite sides of the two locking plates (28) are respectively fitted with the back sides of the two moulds (6), and the opposite sides of the two pressing blocks (18) are fitted with the outer surfaces of the two moulds (6).

5. A mold clamping device for a die casting machine according to claim 2, characterized in that: The opposite ends of the two screw rods (35) penetrate the outside of the ring frame (1) and are fixed with gears (40). The outer surface of the ring frame (1) is rotatably connected with a gear ring (41), and the left side of the gear ring (41) is meshed with the two gears (40).

6. A mold clamping device for a die casting machine according to claim 2, characterized in that: The outer surface of the screw plate (36) fits the inner surface of the side groove (34).

7. A mold clamping device for a die casting machine according to claim 1, characterized in that: The lifting frame (15) and the pressing block (18) are both U-shaped structures. The two gear cylinders (22) are respectively located on the left and right sides of the pressing block (18). The gear cylinder (22) is located below the tooth plate (21). The gear cylinder (22) is meshedly connected with the pressing block (18) and the tooth plate (21).

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