Automatic forging press super-long rod negative mold push-out mechanism

Abstract

The utility model discloses an automatic forging press superlong rod female die push-out mechanism relates to the field of automatic forging, it includes the fixed installation of the guide rail seat of the top front part of the bed body, the horizontal sliding of guide rail seat is provided with the guide block, the fixed installation of ball head push rod has at the rear end of guide block, the push block is cooperated with in the vertical sliding of guide block, the round head swing lever is fixed with the top front side of swing fork top, and the round head swing lever penetrates guide rail seat and is rotatably hinged with push block, and the roller bearing is rotatably installed at the bottom of swing fork, the cam frame is arranged below swing fork, and the cam is fixedly installed on cam frame, and the cam is in contact with roller bearing. The utility model has the beneficial effects that: through the cooperation of crank rocker mechanism, cam, swing fork realizes the accurate conversion of the rotation motion to push block compound motion, can stably push out the superlong rod workpiece in female die, and the safety pin and the traction assembly respectively guarantee overload safety and motion transmission reliable, and the whole adaptation automatic forging press high strength operation demand.

Description

Technical Field

[0001] This utility model belongs to the field of automatic forging and pressing, and relates to the field of automatic forging presses, specifically to an automatic forging press with an extra-long rod female die ejection mechanism. Background Technology

[0002] Automatic forging presses, as one of the main manufacturing equipment for fasteners, irregularly shaped parts, and rolling elements, have significant advantages such as high production efficiency and material utilization, good product quality and stability, and low energy consumption and cost. Therefore, they are widely used in industries such as electronics and information technology, instrumentation, transportation, light industry, home appliances, aerospace, and weaponry. It can be said that automatic forging presses play a vital role in national production. However, in the production of ultra-long rod parts, the rod is formed within a female die.

[0003] The rod formed within the die needs to be ejected from the die. Existing die ejection mechanisms use a ball-head bolt on a swing fork to push the ejection rod. The ball-head bolt swings in an arc around the center of the swing fork, and the chord length of the ball-head bolt's center within the horizontal plane of the ejection rod within the swing angle range is the ejection length of the die. The part can only be ejected when the ejection length is equal to the length of the forged part formed within the die. For ultra-long rods, a larger swing angle is required, and the chord length of the ball-head bolt's center at the two extreme positions must be long. This results in the ball-head bolt head not contacting the die ejection rod near the start and end positions of the swing fork, failing to complete the die ejection and potentially damaging machine parts. Using a standard die ejection mechanism for ultra-long rod parts results in a bulky mechanism with poor rigidity, preventing the machine tool from functioning properly. Utility Model Content

[0004] This invention addresses the technical problem of difficulty in ejecting ultra-long rods from the die, which can disrupt machine tool operation. It provides an automatic forging press mechanism for ejecting ultra-long rods from the die. Through the coordinated operation of a crank-rocker mechanism, cam, and swing fork, it achieves a precise conversion from rotary motion to a combined pushing block motion, stably ejecting ultra-long rods from the die. Furthermore, a safety pin and a tensioning assembly ensure overload safety and reliable motion transmission, respectively, making the entire mechanism suitable for the high-intensity operation requirements of automatic forging presses.

[0005] The technical solution adopted by this utility model is as follows: An automatic forging press ultra-long rod female die ejection mechanism is provided, including a bed and a female die fixedly installed on the bed, with an ejection rod fitted inside the female die. A guide rail seat is fixedly installed at the front of the top of the bed, and a guide block is horizontally slidably arranged on the guide rail seat. A ball-head push rod is fixedly installed at the rear end of the guide block, and the ball-head push rod is coaxially connected with the ejection rod. A push block is vertically slidably fitted inside the guide block. A swing fork is provided below the guide rail seat, and the swing fork is oscillatingly installed on the bed via a rotating shaft. A round-headed swing rod is fixed to the front side of the top of the swing fork, and the round-headed swing rod passes through the guide rail seat and is rotatably hinged to the push block. A safety pin and a pulling assembly are distributed vertically on the rear side of the top of the swing fork, and a roller bearing is rotatably installed at the bottom of the swing fork. The safety pin passes forward through the round-headed swing rod, and the pulling assembly is connected to the bed. A cam frame is provided below the swing fork, and the cam frame is oscillatingly installed on the bed via a crank-rocker mechanism. A cam is fixedly installed on the cam frame, and the cam abuts against the roller bearing.

[0006] Through the coordinated operation of the crank rocker mechanism with components such as the cam and swing fork, the rotational motion is transformed into the compound motion of the push block, realizing the stable ejection of the part inside the ultra-long rod die. The overall structure is compact and the transmission is highly efficient. The safety pin is designed to break first in case of overload, cutting off the abnormal force transmission path and effectively protecting the core components. In addition, the tensioning component ensures that the roller bearing and the cam are always in contact, ensuring the continuity and reliability of motion transmission. It is suitable for high-intensity operation scenarios of automatic forging presses.

[0007] To further optimize this technical solution, the guide rail base includes a base fixedly connected to the bed, a top cover fixedly connected to the top of the base, and elongated holes on both the base and the top cover. The guide block is horizontally slidably connected to the elongated holes, and the round-headed rocker arm passes through the elongated holes on the base and is rotatably hinged to the push block.

[0008] The guide rail base adopts a split structure of base and top cover, which facilitates the installation and maintenance of guide blocks. The elongated holes on the base and top cover provide precise horizontal sliding constraints for the guide blocks, reducing swaying during movement. At the same time, it reserves movement space for the round-headed rocker arm, avoids component interference, and improves the stability and accuracy of the mechanism's movement.

[0009] To further optimize this technical solution, the traction assembly includes a cylinder that is rotatably hinged to the bed, and the output end of the cylinder is rotatably hinged to the swing fork.

[0010] The traction assembly uses a cylinder with rotating hinges at both ends, which can provide stable tension to ensure close contact between the roller bearing and the cam, and can also adapt to changes in the swing angle of the swing fork, reducing stress concentration caused by rigid connection and extending the service life of the components. At the same time, the flexible tension of the cylinder can buffer the impact of movement and improve the smoothness of the mechanism operation.

[0011] To further optimize this technical solution, the crank-rocker mechanism includes an eccentric disk mounted on the bed via a transmission shaft, a large pull rod rotatably mounted on the eccentric disk, and the end of the large pull rod away from the eccentric disk rotatably mounted to the cam frame.

[0012] The crank-rocker mechanism efficiently converts rotary motion into oscillating motion of the cam carriage through a combination of a transmission shaft, an eccentric disk, and a large tie rod. The transmission path is clear and the mechanical performance is stable. The design of the eccentric disk facilitates the adjustment of the oscillation amplitude of the cam carriage, and the rotary connection of the large tie rod reduces motion interference, ensuring that the mechanism maintains reliable performance in high-frequency operation.

[0013] To further optimize this technical solution, a vertical groove is provided inside the guide block, the vertical groove penetrates the guide block, and the push block slides vertically with the groove.

[0014] The vertical groove inside the guide block runs through the guide block, which can avoid jamming or interference caused by space constraints when the push block slides, ensuring smooth vertical movement of the push block. The precise cooperation between the groove and the push block further improves the motion guidance accuracy, ensures stable transmission of horizontal thrust from the push block to the guide block, and reduces energy loss.

[0015] To further optimize this technical solution, the top of the round-headed swing rod is provided with a circular joint, and the bottom surface of the push block is provided with a notch that matches the circular joint, and the circular joint and the notch are rotatably engaged.

[0016] The circular joint of the round-headed rocker arm and the notch on the bottom surface of the push block form a rotating fit, which not only realizes the flexible hinge between the rocker fork and the push block, but also reduces contact wear when the rocker fork swings, ensuring uniform force transmission. The matching structure of the circular joint and the notch facilitates assembly and maintenance, and improves the durability of the mechanism.

[0017] To further optimize this technical solution, a pin hole is provided on the rear side of the top of the swing fork, and a through hole is correspondingly provided on the round-headed swing rod, with the safety pin passing through the pin hole and the through hole.

[0018] The safety pin is precisely positioned through the pin hole of the swing fork and the through hole of the round-headed swing rod, ensuring a stable connection between the swing fork and the round-headed swing rod under normal operating conditions. When an overload occurs, this structure concentrates stress on the safety pin, ensuring that it breaks first, quickly cutting off the transmission of abnormal force, and minimizing the risk of damage to the core components.

[0019] To further optimize this technical solution, the guide rail seat, guide block, push block, ball-head push rod, push rod, and round-head swing rod are all subjected to quenching treatment.

[0020] Quenching key moving parts such as guide rail seats, guide blocks, and push blocks can significantly improve their surface hardness and wear resistance, reduce wear caused by long-term friction, enhance the fatigue strength of the parts, extend the overall service life of the mechanism, reduce maintenance frequency, and meet the high-intensity and high-frequency operation requirements of automatic forging presses.

[0021] The beneficial effects of this utility model are as follows: 1. Through the coordinated operation of the crank rocker mechanism, cam, and swing fork, the rotational motion is precisely converted into the vertical sliding and horizontal pushing of the push block, thereby enabling the guide block to move horizontally along the guide rail seat. The push rod smoothly pushes out the extra-long rod component, and the traction component ensures that the roller bearing and the cam are always in contact, eliminating motion gaps and ensuring continuous and reliable power transmission. 2. The swing angle of the crank rocker mechanism during the push-out stroke is less than its maximum swing angle, leaving a safety margin for the movement and preventing damage to the mechanism due to impact at extreme positions. At the same time, the safety pin, as a pre-designed weak point, will break first in case of overload, quickly cutting off the abnormal force transmission path. Together with the monitoring device, it can realize shutdown protection and greatly reduce the risk of damage to core components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the extra-long rod female die ejection mechanism of the automatic forging press in this embodiment; Figure 2 This is a schematic diagram of the planar structure of the extra-long rod female die ejection mechanism of the automatic forging press in this embodiment; Figure 3 This is a schematic diagram of the drive structure of the cam and the rocker fork in this embodiment; Figure 4 This is a schematic diagram of the disassembled structure of the round-headed rocker arm and the push block in this embodiment; Figure 5 This is a schematic diagram of the round-headed rocker arm in this embodiment. Figure 6 This is a schematic diagram showing the disassembled structure of the base and top cover of the guide rail seat in this embodiment; Figure 7 This is a schematic diagram of the guide rail base in this embodiment.

[0023] In the diagram, 1. Bed; 2. Female mold; 3. Guide rail seat; 301. Base; 302. Top cover; 303. Long slot; 4. Guide block; 401. Vertical slide groove; 5. Ball head push rod; 6. Push rod; 7. Push block; 701. Notch; 8. Swing fork; 801. Roller bearing; 802. Pin hole; 9. Round head swing rod; 901. Circular joint; 902. Through hole; 10. Safety pin; 11. Cam frame; 1101. Cam; 12. Crank rocker mechanism; 1201. Eccentric plate; 1202. Large tie rod; 13. Cylinder; 14. Drive shaft. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Please see the appendix Figure 1 Appendix Figure 6 Appendix Figure 7 An automatic forging press with an extra-long rod female die ejection mechanism includes a bed 1, a female die 2 formed by processing is fixedly installed on the top of the bed 1, an ejection rod 6 is fitted inside the female die 2, the ejection rod 6 is used to eject the workpiece inside the female die 2, a guide rail seat 3 is fixedly installed at the front of the top of the bed 1, a guide block 4 is horizontally slidably arranged on the guide rail seat 3, the base 301 of the guide rail seat 3 is tightened and fixed to the bed 1 by bolts, etc., the top of the base 301 is tightened and fixed to the top of the base 301 by bolts, the base 301 and the top cover 302 are both provided with elongated holes 303, the guide block 4 is slidably assembled in the elongated holes 303, the guide block 4 is provided with a vertical sliding groove 401, a push block 7 is vertically slidably fitted in the sliding groove, the two ends of the sliding groove pass through the guide block 4 to avoid interfering with the sliding effect of the push block 7 and to ensure the smooth sliding of the push block 7; Please see the appendix Figure 2-5 Below the guide rail seat 3, a swing fork 8 is provided. The swing fork 8 is oscillatingly mounted on the bed 1 via a rotating shaft. The two ends of the swing fork 8 are respectively provided with a round-headed swing rod 9 and a roller bearing 801. The round-headed swing rod 9 is fixedly mounted on the front side of the top of the swing fork 8. The safety pin 10 and the pulling assembly are distributed vertically on the rear side of the top of the swing fork 8. The pulling assembly is a cylinder 13. The cylinder body of the cylinder 13 is rotatably hinged to the bed 1, and the output end of the cylinder 13 is rotatably hinged to the swing fork 8. The roller bearing 801 is rotatably mounted on the bottom of the swing fork 8. Below the swing fork 8, a cam 1101 frame 11 is also provided. The cam 1101 frame 11 is oscillatingly mounted on the bed 1 via a crank rocker structure. The cam 1101 is fixedly mounted on the cam 1101 frame 11. The swing fork 8 is pulled by the cylinder 13 so that the roller bearing 801 at its bottom always keeps in contact with the cam 1101. Please see the appendix Figure 1-3When the cam 1101 frame 11 is driven to swing by the crank-rocker assembly, the cam 1101 pushes the rocker fork 8 to swing on the bed 1. The crank-rocker assembly includes an eccentric disk 1201 driven by a drive shaft 14 and mounted on the bed 1. A large pull rod 1202 is rotatably mounted on the eccentric disk 1201. The end of the large pull rod 1202 away from the eccentric disk 1201 is rotatably mounted to the cam 1101 frame 11. As the drive shaft 14 drives the eccentric disk 1201 to rotate, the large pull rod 1202 reciprocates, driving the cam 1101 frame 11 to swing on the bed 1. The cam 1101 on the cam 1101 frame 11 pushes the rocker fork 8 and pulls it through the cylinder 13 to make it swing back and forth. The rocker fork 8 is connected to the round-headed rocker arm. 9 and push block 7 push guide block 4 to reciprocate within guide rail seat 3. The top rear side of swing fork 8 is provided with pin hole 802, and the round-headed swing rod 9 is provided with through hole 902. Safety pin 10 passes through pin hole 802 and through hole 902. The contact point between safety pin 10 and swing fork 8 and round-headed swing rod 9 is the receiving point. When the load of guide seat pushes push rod 6 increases, the force between round-headed swing rod 9 and swing fork 8 exceeds the design bearing limit of safety pin 10. As a pre-set "weak link" in the mechanism, the force borne by its stress point exceeds its own strength and will cause it to break, thereby cutting off the transmission path of abnormal force, avoiding damage to more parts, and issuing an abnormal signal so that the machine can be stopped for maintenance in time.

[0026] The working principle of the extra-long rod female die ejection mechanism of the automatic forging press is as follows: The eccentric disk 1201 in the crank rocker mechanism 12 is driven to rotate by the transmission shaft 14. The eccentric disk 1201 converts the rotational motion into reciprocating motion through the large tie rod 1202, which in turn drives the cam 1101 frame 11, which is rotatably connected to the large tie rod 1202, to swing on the bed 1, and drives the cam 1101 fixed on it to move synchronously. When the cam 1101 is pushed out, it pushes the swing fork 8 to move. The swing fork 8 is pulled by the cylinder 13. When the cam 1101 is pushed back, the swing fork 8 is pulled by the cylinder 13, so that the roller bearing 801 on the swing fork 8 always keeps in contact with the cam 1101, so that the contour curve of the cam 1101 pushes the swing fork 8 to swing back and forth around the rotating shaft on the bed 1. The round-headed rocker arm 9 at the front of the top of the rocker fork 8 swings synchronously with the rocker fork 8 in an arc. The round-headed rocker arm 9 is pivotally hinged to the push block 7 in the vertical slide groove 401 inside the guide block 4. During the swing of the rocker fork 8, the push block 7 completes synchronous vertical sliding along the vertical slide groove 401 of the guide block 4, while pushing the guide block 4 to move horizontally back and forth in the elongated hole 303 of the guide rail seat 3, realizing the conversion of "arc motion to vertical sliding and horizontal linear motion". When the guide block 4 moves horizontally, it drives the ball-headed push rod 5 fixed at its rear end to move synchronously. The ball-headed push rod 5 further pushes the ejection rod 6 in the female mold 2, and finally the ejection rod 6 ejects the ultra-long rod part formed in the female mold 2. The crank rocker mechanism 12, as the driving component, has two extreme positions (i.e., the two end positions of the swing of the cam 1101 frame 11). The swing angle of the cam 1101 frame 11 to complete the ejection stroke is less than the maximum swing angle between its two extreme positions, leaving a safety margin for the movement of the mechanism. When abnormal part forming (such as mold jamming) causes an increase in the load on the ejector rod 6, the force between the round-headed rocker arm 9 and the rocker fork 8 will exceed the design bearing limit of the safety pin 10, which is inserted through the pin hole 802 of the rocker fork 8 and the through hole 902 of the round-headed rocker arm 9. As a pre-designed "weak link" of the mechanism, the safety pin 10 will break after the force it bears exceeds its own strength, cutting off the transmission path of the abnormal force. At the same time, the monitoring device receives the signal and controls the machine to stop to avoid damage to other parts and facilitate subsequent maintenance operations.

Claims

1. An automatic forging press extra-long rod female die ejection mechanism, characterized in that: The bed includes a bed frame (1), a guide rail seat (3) fixedly installed at the front top of the bed frame (1), a guide block (4) horizontally sliding on the guide rail seat (3), a ball head push rod (5) fixedly installed at the rear end of the guide block (4), and a push rod (6) coaxially fixedly connected to the ball head push rod (5); a push block (7) vertically slidingly fitted inside the guide block (4); a swing fork (8) is provided below the guide rail seat (3), the swing fork (8) is swung and installed on the bed frame (1) via a pivot, and a round-headed swing rod (9) is fixedly installed on the front side of the top of the swing fork (8), the round-headed swing rod (9) passing through the guide rail seat (1). 3) It is hinged to the push block (7) and rotated; a safety pin (10) and a traction assembly are distributed on the rear side of the top of the swing fork (8). The safety pin (10) passes through the round-headed swing rod (9) and the traction assembly is connected to the bed (1); a cam (1101) frame (11) is provided below the swing fork (8). The cam (1101) frame (11) is swung and mounted on the bed (1) by means of the crank rocker mechanism (12). A cam (1101) is fixedly installed on the cam (1101) frame (11). The cam (1101) abuts against the roller bearing (801).

2. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The guide rail base (3) includes a base (301) fixedly connected to the bed (1), a top cover (302) fixedly connected to the top of the base (301), and elongated holes (303) are provided on both the base (301) and the top cover (302). The guide block (4) is horizontally slidably connected to the elongated hole (303), and the round-headed rocker arm (9) passes through the elongated hole (303) on the base (301) and is rotatably hinged to the push block (7).

3. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The traction assembly includes a cylinder (13) that is rotatably hinged to the bed (1), and the output end of the cylinder (13) is rotatably hinged to the swing fork (8).

4. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The crank rocker mechanism (12) includes an eccentric disk (1201) driven by a transmission shaft (14) and mounted on the bed (1). A large pull rod (1202) is rotatably mounted on the eccentric disk (1201), and the end of the large pull rod (1202) away from the eccentric disk (1201) is driven and mounted to the cam (1101) frame (11).

5. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The guide block (4) has a vertical groove (401) inside, the vertical groove (401) passes through the guide block (4), and the push block (7) slides vertically with the groove.

6. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The top of the round-headed swing rod (9) is provided with a circular connector (901), and the bottom surface of the push block (7) is provided with a notch (701) that is adapted to the circular connector (901). The circular connector (901) and the notch (701) are rotatably engaged.

7. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The top rear side of the swing fork (8) is provided with a pin hole (802), and the round-headed swing rod (9) is provided with a through hole (902). The safety pin (10) passes through the pin hole (802) and the through hole (902).

8. The automatic forging press extra-long rod female die ejection mechanism according to claim 1, characterized in that: The guide rail seat (3), guide block (4), push block (7), ball head push rod (5), push rod (6) and round head swing rod (9) are all hardened.

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