A quick die changing device for screw press

Abstract

The present invention relates to a quick die changing device for a screw press, and relates to the field of forging dies for a press, which includes a material changing mechanism arranged on one side of a frame, and a material pushing mechanism is arranged on the side of the frame away from the material changing mechanism; the material changing mechanism includes an oil cylinder arranged on one side of the frame, the oil cylinder is arranged vertically, a connecting plate is rotatably connected to the piston rod of the oil cylinder, a rotating shaft is fixed on the connecting plate, the rotating shaft is rotatably connected to the oil cylinder, a driving motor is fixed on the top of the material changing rod, and a support plate is connected to the side of the connecting plate away from the material changing rod, and the support plate is used to receive the die. The present invention has the effect of replacing the traditional manual die changing, reducing the labor intensity of the staff, and improving the die changing efficiency.

Description

Technical Field

[0001] The invention relates to the field of press forging dies, in particular to a quick die changing device for a screw press. Background Art

[0002] Screw press is a general term for a pressurizing machine that generates pressure by rotating one or more sets of outer and inner bolts in a frame. Screw presses can be divided into two types: one that generates static pressure by applying torque to the bolts, and the other that concentrates the rotational energy of the flywheel fixed on the bolts for forming.

[0003] At present, the application of screw presses in the forging industry is increasing. In the process of multi-variety and small batch production, the interval between die replacement is getting shorter and shorter, and the frequency of die replacement is getting higher and higher. The traditional method is mostly manual replacement, which is not only time-consuming and labor-intensive, but also greatly increases the equipment downtime, reduces the equipment production efficiency and machine utilization rate, and the manual replacement of operators leads to high labor intensity for operators. Summary of the invention

[0004] In order to replace the traditional manual mold replacement, reduce the labor intensity of the staff and improve the mold replacement efficiency, the present invention provides a quick mold change device for a screw press.

[0005] The invention provides a quick die changing device for a screw press, which adopts the following technical solution:

[0006] A quick mold changing device for a screw press comprises a material changing mechanism arranged on one side of a frame, and a material pushing mechanism is arranged on the side of the frame away from the material changing mechanism; the material changing mechanism comprises a cylinder arranged on one side of the frame, the cylinder is arranged vertically, a connecting plate is rotatably connected to the piston rod of the cylinder, a rotating shaft is fixed on the connecting plate, the rotating shaft is rotatably connected to the cylinder, a driving motor is fixed on the top of the material changing rod, and a support plate is connected to the side of the connecting plate away from the material changing rod, and the support plate is used to receive the mold.

[0007] By adopting the above technical solution, when replacing the mold, the pushing mechanism pushes the mold on the frame to the support plate, and the driving motor is used to drive the connecting plate and the support plate to rotate around the axis of the rotating shaft, so that the mold can be taken out of the frame, and the piston rod of the cylinder is retracted, which makes it easy to lower the height of the mold, take the mold, and place the new mold on the support plate, thereby replacing the traditional manual mold replacement, reducing the labor intensity of the staff, and improving the efficiency of mold replacement.

[0008] Optionally, a positioning plate is fixedly provided on the side of the connecting plate away from the material changing rod, a hinge shaft is fixedly provided on the support plate, the hinge shaft is rotatably connected to the positioning plate, and storage hydraulic cylinders are symmetrically provided on both sides of the connecting plate, the cylinder bodies of the storage hydraulic cylinders are hinged on both sides of the connecting plate, and the piston rod ends of the storage hydraulic cylinders are hinged to the bottom of the support plate.

[0009] By adopting the above technical solution, the piston rod of the storage hydraulic cylinder is retracted, driving the support plate to flip downward around the axis of the hinge shaft, which makes it easier to store the support plate and reduces the space occupied by the support plate.

[0010] Optionally, limit rods are provided on both sides of the support plate, which are used to limit the two sides of the mold. A driving component is provided at the bottom of the support plate to drive the limit rods to move toward each other and abut against the side wall of the support plate or move away from each other and separate from the support plate.

[0011] By adopting the above technical solution, the limit rod is used to limit the two sides of the mold, which can prevent the mold from falling from the top of the support plate. The driving assembly drives the support plate to move away from the support plate, which makes it easier to push the mold onto the support plate and also easier to remove the mold from the support plate.

[0012] Optionally, the driving assembly includes a cylinder fixed to the bottom of the support plate, the cylinder is horizontally arranged relative to the support plate, a connecting rod is fixed to the end of the piston rod of the cylinder, both ends of the connecting rod are hinged with connecting rod 1, the end of connecting rod 1 away from the connecting rod is hinged with connecting rod 2, the end of connecting rod 2 away from connecting rod 1 is hinged to the bottom of the support plate and located on both sides of the cylinder body of the cylinder, connecting rod 1 and connecting rod 2 are both horizontally arranged, a limiting rod is fixedly connected to an end of connecting rod 2 close to connecting rod 1 and is located on the side of connecting rod 2 away from connecting rod 1, and the limiting rod is arranged perpendicular to connecting rod 2.

[0013] By adopting the above technical solution, when taking or placing the mold, the piston rod of the cylinder extends, pushing the connecting rod to move forward, and the connecting rod pushes the hinge point of connecting rod one and connecting rod two to move away from the support plate, so as to facilitate the sliding of the mold to the support plate. After the mold slides to the support plate, the piston rod of the cylinder is retracted, driving the connecting rod to move toward the cylinder body of the cylinder, and then driving the hinge point of connecting rod one and connecting rod two to move toward the support plate, and the limit rods on both sides move toward the support plate and abut against the two sides of the support plate to limit the mold on the support plate.

[0014] Optionally, the pushing mechanism includes an angular hydraulic cylinder fixedly mounted on a frame, a cylinder body of the angular hydraulic cylinder is fixedly connected to the frame, and an end of a piston rod of the angular hydraulic cylinder extends into the frame.

[0015] By adopting the above technical solution, the piston rod of the angle hydraulic cylinder is extended, pushing the lower die to move in the direction of the support plate, and pushing the lower die out of the lower die seat, which is convenient for the discharge of the die.

[0016] Optionally, a plug-in block is fixedly provided at the end of the piston rod of the angle hydraulic cylinder, a limiting strip is fixedly provided at the bottom of the lower die, and a slot for the plug-in block to be plugged in is formed between the limiting strip and the lower die.

[0017] By adopting the above technical solution, when disassembling, the piston rod of the angular hydraulic cylinder is extended to push the mold to slide in the direction of the support plate. When installing the mold, the piston rod of the angular hydraulic cylinder is extended and rotated ninety degrees, so that the plug-in block is inserted into the slot between the limit bar and the lower mold. The piston rod of the angular hydraulic cylinder is retracted, and the lower mold can be pulled from the support plate to the lower mold seat, replacing the traditional manual pushing of the mold, saving effort for the staff.

[0018] Optionally, a lower die base and an upper die base are provided on the frame, and the die includes an upper die installed on the upper die base and a lower die installed in the lower die base; an inverted T-shaped slide groove is provided on the lower die base of the frame, an inverted T-shaped bolt is slidably connected in the inverted T-shaped slide groove, and a baffle is threadedly connected on the inverted T-shaped bolt for fixing the lower die and the lower die base.

[0019] By adopting the above technical solution, it is convenient to fix the lower die on the lower die base.

[0020] Optionally, a wedge-shaped groove is provided at the bottom of the upper die seat, and the wedge-shaped groove extends from a side of the upper die seat close to the oil cylinder to a side close to the angle hydraulic cylinder, and a wedge-shaped block is fixedly provided at the top of the upper die.

[0021] By adopting the above technical solution, the wedge block is inserted into the wedge groove of the upper die seat, so that the upper die can be automatically installed in the upper die seat to achieve pre-positioning, and then the upper die and the upper die seat are fixed by bolts, which is convenient for disassembly and installation of the upper die. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of the quick die change device and the screw press in the embodiment.

[0023] Figure 2 It is a schematic diagram of the overall structure of the quick mold changing device, the mold, the upper mold base and the lower mold base in the embodiment.

[0024] Figure 3 It is a schematic diagram of the overall structure of the material changing mechanism.

[0025] Figure 4 This is a structural diagram for highlighting the cylinder, connecting rod, connecting rod one and connecting rod two.

[0026] Figure 5 yes Figure 2 Enlarged view of part A.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Lower die base; 111. Inverted T-shaped slide groove; 112. Inverted T-shaped bolt; 113. Stop bar; 12. Upper die base; 121. Wedge-shaped groove; 2. Die; 21. Upper die; 211. Wedge-shaped block; 22. Lower die; 221. Limit bar; 222. Slot; 3. Material changing mechanism; 31. Cylinder; 32. Material changing rod; 33. Connecting plate; 331. Rotating shaft; 332. Positioning plate; 333. Driving motor; 34. Support plate; 341. Articulated shaft; 35. Storage hydraulic cylinder; 36. Cylinder; 361. Connecting rod; 362. Connecting rod one; 363. Connecting rod two; 37. Limiting rod; 4. Material pushing mechanism; 41. Angle hydraulic cylinder; 42. Plug-in block. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 The present invention is described in further detail.

[0029] The embodiment of the present invention discloses a quick die changing device for a screw press. Figure 1 and Figure 2 A quick die changing device of a screw press comprises a material changing mechanism 3 and a material pushing mechanism 4 arranged on the press, the material changing mechanism 3 is used to be arranged on one side of a frame 1, and the material pushing mechanism 4 is arranged on the side of the frame 1 opposite to the material changing mechanism 3; the material pushing frame 1 pushes the mold 2 on the frame 1 to the side of the material changing mechanism 3, the material changing mechanism 3 takes out the mold 2, and then installs a new mold 2, thereby achieving the effect of quick die changing.

[0030] The frame 1 is provided with a lower die base 11 and an upper die base 12, and the upper die base 12 is located above the lower die base 11. The die 2 comprises an upper die 21 installed on the upper die base 12 and a lower die 22 installed in the lower die base 11, and the upper die 21 and the lower die 22 are buckled together.

[0031] Reference Figure 3The material changing mechanism 3 includes a cylinder 31 arranged on one side of the lower die base 11. The cylinder 31 is arranged vertically. A material changing rod 32 is fixedly provided on the piston rod of the cylinder 31. One end of the material changing rod 32 is sleeved on the piston rod of the cylinder 31; one end of the material changing rod 32 away from the piston rod of the cylinder 31 is rotatably connected to a connecting plate 33. The connecting plate 33 is arranged vertically. A rotating shaft 331 is fixedly provided on the connecting plate 33. The rotating shaft 331 is rotatably connected to the material changing rod 32. A driving motor 333 is fixedly provided on the top of the material changing rod 32. The driving motor 333 is used to drive the connecting plate 33 to rotate around the axis of the rotating shaft 331. A positioning plate 332 is fixedly provided on the side of the connecting plate 33 away from the material changing rod 32, and the positioning plate 332 is horizontally arranged; a support plate 34 is hingedly connected to the side of the positioning plate 332 away from the connecting plate 33, and the support plate 34 is used to receive the mold 2. A hinge shaft 341 is fixedly provided on the support plate 34, and the hinge shaft 341 is rotatably connected to the positioning plate 332. Storage hydraulic cylinders 35 are symmetrically arranged on both sides of the connecting plate 33, and the cylinder bodies of the storage hydraulic cylinders 35 are hinged on both sides of the connecting plate 33, and the piston rod ends of the storage hydraulic cylinders 35 are hinged to the bottom of the support plate 34; the piston rod of the storage hydraulic cylinder 35 is retracted, driving the support plate 34 to flip downward around the axis of the hinge shaft 341, so as to facilitate the storage of the support plate 34 and reduce the space occupied by the support plate 34.

[0032] Reference Figure 4 , limiting rods 37 are provided on both sides of the support plate 34, and the limiting rods 37 are used to limit the two sides of the mold 2 to prevent the support plate 34 from falling when the mold 2 is being transported; a cylinder 36 is fixedly provided at the bottom of the support plate 34, and the cylinder 36 is horizontally arranged relative to the support plate 34. A connecting rod 361 is fixedly provided at the end of the piston rod of the cylinder 36, and a connecting rod 1 362 is hinged at both ends of the connecting rod 361, and a connecting rod 362 is hinged at one end of the connecting rod 1 362 away from the connecting rod 361. An end of the connecting rod 1 362 away from the connecting rod 361 is hinged to a connecting rod 2 363, and an end of the connecting rod 2 363 away from the connecting rod 1 362 is hinged to the bottom of the support plate 34 and is located on both sides of the cylinder body of the cylinder 36, and the connecting rod 1 362 and the connecting rod 2 363 are both horizontally arranged, and the limiting rod 37 is fixedly connected to an end of the connecting rod 2 363 close to the connecting rod 1 362, and Located on the side of connecting rod 2 363 away from connecting rod 1 362, the limiting rod 37 is arranged perpendicular to connecting rod 2 363; when taking or placing the mold 2, the piston rod of the cylinder 36 extends, pushing the connecting rod 361 to move forward, and the connecting rod 361 pushes the hinge point of connecting rod 1 362 and connecting rod 2 363 to move in the direction away from the support plate 34, so as to facilitate the sliding of the mold 2 onto the support plate 34. After the mold 2 slides to the support plate 34, the piston rod of the cylinder 36 is retracted, driving the connecting rod 361 to move toward the cylinder body of the cylinder 36, and then driving the hinge point of connecting rod 1 362 and connecting rod 2 363 to move toward the direction of the support plate 34, and the limiting rods 37 on both sides move toward each other toward the support plate 34 and abut against the two sides of the support plate 34 to limit the mold 2 on the support plate 34.

[0033] Reference Figure 2 and Figure 5 The pushing mechanism 4 includes a rotary hydraulic cylinder 41 fixed on the lower die base 11, the cylinder body of the rotary hydraulic cylinder 41 is fixedly connected to the lower die 22, the piston rod end of the rotary hydraulic cylinder 41 extends to the top of the lower die base 11, the piston rod of the rotary hydraulic cylinder 41 is extended, pushing the lower die 22 to move in the direction of the support plate 34, and pushing the lower die 22 out of the lower die base 11. A plug-in block 42 is fixedly provided at the end of the piston rod of the corner hydraulic cylinder 41, and a limit strip 221 is fixedly provided at the bottom of the lower mold 22, and a slot 222 for the plug-in block 42 to be plugged in is formed between the limit strip 221 and the lower mold 22; when disassembling, the piston rod of the corner hydraulic cylinder 41 is extended to push the mold 2 to slide in the direction of the support plate 34; when installing the mold 2, the piston rod of the corner hydraulic cylinder 41 is extended and rotated ninety degrees, so that the plug-in block 42 is plugged into the slot 222 between the limit strip 221 and the lower mold 22, and the piston rod of the corner hydraulic cylinder 41 is retracted, so that the lower mold 22 can be pulled from the support plate 34 to the lower mold base 11, replacing the traditional manual pushing of the mold 2, saving effort for the staff.

[0034] The lower die base 11 is provided with an inverted T-shaped slot 111, in which an inverted T-shaped bolt 112 is slidably connected, and a retaining bar 113 is threadedly connected on the inverted T-shaped bolt 112 to fix the lower die 22 and the lower die base 11. The bottom of the upper die base 12 is provided with a wedge-shaped slot 121, which extends from the side of the upper die base 12 close to the oil cylinder 31 to the side close to the angle hydraulic cylinder 41. The top of the upper die 21 is fixed with a wedge block 211, which is inserted into the wedge-shaped slot 121 of the upper die base 12, so that the upper die 21 is automatically installed in the upper die base 12 to achieve pre-positioning, and then the upper die 21 and the upper die base 12 are fixed by bolts.

[0035] The implementation principle of the quick die-changing device of a screw press according to the embodiment of the present invention is as follows: when replacing the die 2, the upper die 21 is buckled into the lower die 22, the piston rod of the receiving hydraulic cylinder 35 is extended, and the support plate 34 is pushed to flip upward to a horizontal position around the hinge shaft 341 between it and the positioning plate 332, and the driving motor 333 drives the support plate 34 to rotate until it abuts against the lower die seat 11, so that the top of the support plate 34 and the top of the lower die seat 11 are at the same height; then, the piston rod of the corner hydraulic cylinder 41 is extended, pushing the lower die 22 to slide onto the support plate 34, Afterwards, the piston rod of the cylinder 36 is retracted, driving the connecting rod 361 to move toward the cylinder body of the cylinder 36, and then driving the hinge point of the connecting rod 1 362 and the connecting rod 2 363 to move toward the direction of the support plate 34, and the limiting rods 37 on both sides move toward the support plate 34 and abut against the two sides of the support plate 34 to limit the mold 2 on the support plate 34; finally, the driving motor 333 drives the connecting plate 33 to rotate, and the connecting plate 33 drives the support plate 34 and the mold 2 to rotate outside the frame 1, so that the mold 2 can be removed from the frame 1.

[0036] When installing a new mold 2, place the new mold 2 on the support plate 34, then the piston rod of the oil cylinder 31 extends to lift the connecting plate 33 and the support plate 34, and the driving motor 333 drives the connecting plate 33 and the support plate 34 to rotate, so that the support plate 34 abuts against the lower mold base 11; finally, the piston rod of the angular hydraulic cylinder 41 extends and rotates ninety degrees, so that the plug-in block 42 is inserted into the slot 222 between the limit strip 221 and the lower mold 22, and the piston rod of the angular hydraulic cylinder 41 is retracted, that is, the lower mold 22 can be pulled from the support plate 34 to the lower mold base 11, so that the upper mold 21 is inserted into the upper mold base 12, and the lower mold 22 can be fixed to the lower mold base 11 by bolts and the limit strip 221.

[0037] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick die changing device for a screw press, characterized in that: It comprises a material changing mechanism (3) arranged on one side of a frame (1), and a material pushing mechanism (4) is arranged on a side of the frame (1) away from the material changing mechanism (3); The material changing mechanism (3) comprises an oil cylinder (31) arranged on one side of the frame (1), the oil cylinder (31) being arranged vertically, a connecting plate (33) being rotatably connected to the piston rod of the oil cylinder (31), a rotating shaft (331) being fixedly arranged on the connecting plate (33), the rotating shaft (331) being rotatably connected to the oil cylinder (31), a driving motor (333) being fixedly arranged on the top of the material changing rod (32), a supporting plate (34) being connected to the side of the connecting plate (33) away from the material changing rod (32), the supporting plate (34) being used to receive the mold (2); A positioning plate (332) is fixedly provided on one side of the connecting plate (33) away from the material changing rod (32); a hinge shaft (341) is fixedly provided on the supporting plate (34); the hinge shaft (341) is rotatably connected to the positioning plate (332); and a receiving hydraulic cylinder (35) is symmetrically provided on both sides of the connecting plate (33); the cylinder body of the receiving hydraulic cylinder (35) is hinged on both sides of the connecting plate (33); and the piston rod end of the receiving hydraulic cylinder (35) is hinged on the bottom of the supporting plate (34); Limiting rods (37) are arranged on both sides of the support plate (34), and the limiting rods (37) are used to limit the two sides of the mold (2). A driving component is arranged at the bottom of the support plate (34) to drive the limiting rods (37) to move towards each other to abut against the side wall of the support plate (34) or to move away from each other to separate from the support plate (34); The driving assembly comprises a cylinder (36) fixedly mounted on the bottom of the support plate (34). The cylinder (36) is arranged horizontally relative to the support plate (34). A connecting rod (361) is fixedly mounted on the end of the piston rod of the cylinder (36). The two ends of the connecting rod (361) are respectively hinged with a connecting rod 1 (362). The end of the connecting rod 1 (362) away from the connecting rod (361) is hinged with a connecting rod 2 (363). The connecting rod 2 (363) is hinged with the end of the connecting rod 1 (362) away from the connecting rod (361). One end of the connecting rod 1 (362) is hinged to the bottom of the support plate (34) and is located on both sides of the cylinder body of the cylinder (36). The connecting rod 1 (362) and the connecting rod 2 (363) are both arranged horizontally. The limiting rod (37) is fixedly connected to one end of the connecting rod 2 (363) close to the connecting rod 1 (362) and is located on the side of the connecting rod 2 (363) away from the connecting rod 1 (362). The limiting rod (37) is arranged perpendicular to the connecting rod 2 (363).

2. A quick die change device for a screw press according to claim 1, characterized in that: The pushing mechanism (4) comprises a rotary hydraulic cylinder (41) fixedly mounted on the frame (1); a cylinder body of the rotary hydraulic cylinder (41) is fixedly connected to the frame (1); and an end of a piston rod of the rotary hydraulic cylinder (41) extends into the frame (1).

3. The quick die changing device for a screw press according to claim 2, characterized in that: A plug-in block (42) is fixedly provided at the end of the piston rod of the angle hydraulic cylinder (41), a limit strip (221) is fixedly provided at the bottom of the lower die (22), and a slot (222) for the plug-in block (42) to be plugged in is formed between the limit strip (221) and the lower die (22).

4. The quick die changing device for a screw press according to claim 1, characterized in that: The frame (1) is provided with a lower die base (11) and an upper die base (12); the die (2) comprises an upper die (21) installed on the upper die base (12) and a lower die (22) installed in the lower die base (11); An inverted T-shaped slide groove (111) is provided on the lower die seat (11) of the frame (1), an inverted T-shaped bolt (112) is slidably connected in the inverted T-shaped slide groove (111), and a retaining bar (113) is threadedly connected on the inverted T-shaped bolt (112) for fixing the lower die (22) and the lower die seat (11).

5. The quick die changing device for a screw press according to claim 4, characterized in that: The bottom of the upper die seat (12) is provided with a wedge-shaped groove (121), which extends from a side of the upper die seat (12) close to the oil cylinder (31) to a side close to the angle hydraulic cylinder (41), and a wedge-shaped block (211) is fixedly provided on the top of the upper die (21).

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