Tool trolley axle cold forging and stamping die with buffering and damping mechanism

Abstract

The utility model discloses a tool car axle cold heading stamping die with buffering and damping mechanism, including the bottom plate, the bottom plate top end symmetry fixed with two hydraulic cylinders, two hydraulic cylinders top end fixedly connected with the punch press, the punch press top fixedly established lower die holder, four corner nooks and crannies of lower die holder top end fixedly established four buffering and damping components, four buffering and damping components two two symmetry distribution in lower die holder top, lower die holder top side symmetry fixedly established two clamping components. The utility model discloses a tool car axle cold heading stamping die with buffering and damping mechanism, through setting buffering and damping component, when the upper die holder is displaced along the vertical direction, the telescopic rod telescopic, when the upper punch impacts and the female die contact instant, nitrogen gas spring and hydraulic bumper jointly act, for the core damping component, absorb the main stamping impact energy, reduce the vibration to the equipment and die.

Description

Technical Field

[0001] This utility model relates to the field of tool cart axle processing, and more particularly to a tool cart axle cold forging stamping die with a buffer and shock absorption mechanism. Background Technology

[0002] Tool cart axles are core load-bearing and moving components of equipment such as handcarts and storage carts, requiring certain strength, rigidity, and fatigue life. They are typically solid or hollow shaft structures, possibly with threads, steps, or holes at both ends for mounting wheels and securing the cart body. To meet these performance requirements, tool cart axles are generally manufactured using cold forging. Cold forging stamping dies are specialized tooling used to apply enormous pressure to a metal blank at room temperature through a die cavity, causing plastic deformation and thus forming a precise shaft part in one step. This manufacturing process allows for continuous metal fiber flow lines and refined grains, significantly improving the product's mechanical properties.

[0003] Traditional cold forging stamping dies for tool cart axles have certain structural shortcomings. They rely primarily on the rigidity of the die steel itself to withstand enormous impact loads, thus lacking dedicated buffering and shock absorption mechanisms. This results in the massive instantaneous stamping force and severe vibrations being directly transmitted to the stamping machine or other components without any buffering, accelerating the wear of critical parts, affecting the overall machine's accuracy and lifespan, and generating significant impact noise. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism.

[0005] The following technical solution is adopted: a cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism, including a base plate, two hydraulic cylinders are symmetrically fixed at the top of the base plate, a punch press is fixedly connected to the top of the two hydraulic cylinders, a lower die base is fixedly fixed at the top of the punch press, four buffer and shock absorption components are fixedly installed at the four corners of the top of the lower die base, the four buffer and shock absorption components are symmetrically distributed in pairs at the top of the lower die base, and two clamping components are symmetrically fixed on both sides of the top of the lower die base.

[0006] Optionally, the buffer and shock absorption assembly includes an upper connecting ring, a nitrogen spring fixedly sleeved at the bottom end of the upper connecting ring, a first middle connecting ring fixedly sleeved on the outer wall of the bottom end of the nitrogen spring, a telescopic rod fixedly sleeved at the bottom end of the first middle connecting ring, a second middle connecting ring fixedly sleeved on the outer wall of the bottom end of the telescopic rod, and a hydraulic buffer fixedly sleeved at the bottom end of the second middle connecting ring. The hydraulic buffer is fixedly mounted on the top of the lower mold base by bolts.

[0007] Optionally, an upper mold base is fixedly connected to the top of the upper connecting ring, a polyurethane buffer pad is fixedly provided at the bottom, an upper pad plate is fixedly provided at the bottom of the polyurethane buffer pad, an upper fixing plate is fixedly connected to the bottom of the upper pad plate by screws, and an upper punch is fixedly connected to the bottom of the upper fixing plate.

[0008] Optionally, a lower pad is fixedly provided at the top of the lower mold base, and a lower fixing plate is fixedly provided at the top of the lower pad by screws. A cavity mold is fixedly connected to the top of the lower fixing plate, and a top groove is provided inside the cavity mold.

[0009] Optionally, the clamping assembly includes a support leg, which is fixedly mounted on the top of the lower mold base. A second electric push rod is fixedly mounted on the top of the support leg. A clamping plate is fixedly mounted on one side of the second electric push rod, and two locking blocks are fixedly mounted on the bottom of one side of the clamping plate.

[0010] Optionally, four slots are symmetrically provided on both sides of the die, and the inner wall of the slot is slidably connected to the outer wall of the block.

[0011] Optionally, a first electric push rod is fixedly provided at the top of the base plate, an ejector plate is fixedly connected to the telescopic end of the first electric push rod, a push rod is fixedly connected to the top of the ejector plate, the top of the push rod is slidably connected to the inner wall of the top groove, a return spring is fixedly connected to the top of the ejector plate, a positioning plate is connected to the top of the return spring, and the return spring is fixedly sleeved on the outer wall of the push rod.

[0012] Optionally, four hydraulic rods are fixedly connected to both sides of the bottom end of the upper mold base. The hydraulic rods pass through the lower mold base and the punch press respectively and are slidably connected to the through part. The hydraulic rods are connected to the inside of the hydraulic cylinder.

[0013] The technical effects that can be achieved by the technical means of this utility model are as follows: (1) In this utility model, by setting a buffer and shock absorption component, when the upper die seat moves in the vertical direction, the telescopic rod extends and retracts. At the moment when the upper punch impacts downward and contacts the die, the nitrogen spring and the hydraulic buffer work together to form the core shock absorption component, which absorbs the main stamping impact energy and reduces the vibration of the equipment and the mold.

[0014] (2) In this utility model, by setting a polyurethane buffer pad, the impact force is evenly distributed, and in conjunction with the buffer and shock absorption components, it further plays a buffering role.

[0015] (3) In this utility model, by setting up a clamping assembly, the second electric push rods on both sides drive the two clamping plates to move closer to the sides of the die, so that the clamping plates clamp the workpiece to be stamped on both sides, preventing the workpiece from moving during the stamping process and causing stamping failure, thereby improving its stability. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the buffer and shock absorption component of this utility model; Figure 3 This is a three-dimensional structural diagram of the internal components of this utility model; Figure 4 This is a three-dimensional structural diagram of the clamping component of this utility model.

[0017] In the diagram: 1. Base plate; 2. Hydraulic cylinder; 3. Punch press; 4. Lower die base; 5. Buffer and shock absorption assembly; 501. Upper connecting ring; 502. Nitrogen spring; 503. First intermediate connecting ring; 504. Telescopic rod; 505. Second intermediate connecting ring; 506. Hydraulic buffer; 6. Upper die base; 7. Upper punch; 8. Hydraulic rod; 9. Clamping assembly; 901. Support leg; 902. Second electric push rod; 903. Clamping plate; 904. Locking block; 10. First electric push rod; 11. Ejector plate; 12. Return spring; 13. Ejector rod; 14. Lower pad plate; 15. Upper pad plate; 16. Polyurethane buffer pad; 17. Upper fixing plate; 18. Die; 19. Top groove; 20. Lower fixing plate; 21. Slot; 22. Positioning plate. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] In the description of this utility model, it should be noted that the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] A preferred embodiment of the tool cart axle cold forging stamping die with buffer and shock absorption mechanism provided by this utility model is as follows: Figures 1 to 4 As shown: A tool cart axle cold forging stamping die with a buffer and shock absorption mechanism includes a base plate 1. Two hydraulic cylinders 2 are symmetrically fixed at the top of the base plate 1. A punch press 3 is fixedly connected to the top of the two hydraulic cylinders 2. A lower die base 4 is fixedly fixed at the top of the punch press 3. Four buffer and shock absorption components 5 are fixedly installed at the four corners of the top of the lower die base 4. The four buffer and shock absorption components 5 are symmetrically distributed in pairs at the top of the lower die base 4. Two clamping components 9 are symmetrically fixed on both sides of the top of the lower die base 4.

[0022] In this embodiment, the buffer and shock absorption assembly 5 includes an upper connecting ring 501, a nitrogen spring 502 is fixedly sleeved at the bottom end of the upper connecting ring 501, a first middle connecting ring 503 is fixedly sleeved on the outer wall of the bottom end of the nitrogen spring 502, a telescopic rod 504 is fixedly sleeved at the bottom end of the first middle connecting ring 503, a second middle connecting ring 505 is fixedly sleeved on the outer wall of the bottom end of the telescopic rod 504, and a hydraulic buffer 506 is fixedly sleeved at the bottom end of the second middle connecting ring 505. The hydraulic buffer 506 is fixedly mounted on the top end of the lower mold base 4 by bolts.

[0023] With the above scheme, when the upper die holder 6 moves in the vertical direction, the telescopic rod 504 extends and retracts. At the moment when the upper punch 7 impacts downward and contacts the die 18, the nitrogen spring 502 and the hydraulic buffer 506 work together as the core shock absorption component to absorb the main stamping impact energy and reduce the vibration of the equipment and the mold.

[0024] In this embodiment, the upper mold base 6 is fixedly connected to the top of the upper connecting ring 501, and a polyurethane buffer pad 16 is fixedly provided at the bottom. An upper pad plate 15 is fixedly provided at the bottom of the polyurethane buffer pad 16. An upper fixing plate 17 is fixedly connected to the bottom of the upper pad plate 15 by screws. An upper punch 7 is fixedly connected to the bottom of the upper fixing plate 17.

[0025] The above scheme uses a polyurethane buffer pad 16 to evenly distribute the impact force. Combined with the buffer and shock absorption component 5, it further plays a buffering role. The upper pad 15 prevents the upper fixed plate 17 from being deformed by indentation under the pressure of the upper mold base 6. The upper fixed plate 17 is used to accurately install and fix the upper punch 7.

[0026] In this embodiment, a lower pad 14 is fixedly provided at the top of the lower mold base 4, and a lower fixing plate 20 is fixedly provided at the top of the lower pad 14 by screws. A cavity mold 18 is fixedly connected to the top of the lower fixing plate 20, and a top groove 19 is provided inside the cavity mold 18.

[0027] In the above scheme, the die 18 is the core working component, which works with the upper punch 7 to form the cavity of the final product shape. The lower pad 14 is used to support the die 18 and distribute the pressure. The lower fixing plate 20 is used to accurately install and fix the die 18.

[0028] In this embodiment, the clamping assembly 9 includes a support leg 901, which is fixedly mounted on the top of the lower mold base 4. A second electric push rod 902 is fixedly mounted on the top of the support leg 901. A clamping plate 903 is fixedly mounted on one side of the second electric push rod 902. Two locking blocks 904 are fixedly mounted on the bottom of one side of the clamping plate 903.

[0029] The above scheme utilizes the second electric push rods 902 on both sides to drive the two clamping plates 903 to move closer to both sides of the die 18, so that the clamping plates 903 clamp the workpiece to be stamped on both sides, preventing the workpiece from moving during the stamping process and causing stamping failure, thus improving its stability.

[0030] In this embodiment, four slots 21 are symmetrically provided on both sides of the concave mold 18, and the inner wall of the slot 21 is slidably connected to the outer wall of the block 904.

[0031] The above method allows the two side blocks 904 to be engaged in the slots 21, improving the stability of the two clamping plates 903.

[0032] In this embodiment, a first electric push rod 10 is fixedly provided at the top of the base plate 1. The telescopic end of the first electric push rod 10 is fixedly connected to an ejector plate 11. The top of the ejector plate 11 is fixedly connected to a push rod 13. The top of the push rod 13 is slidably connected to the inner wall of the top groove 19. A return spring 12 is fixedly connected to the top of the ejector plate 11. A positioning plate 22 is connected to the top of the return spring 12. The return spring 12 is fixedly sleeved on the outer wall of the push rod 13.

[0033] With the above scheme, the first electric push rod 10 drives the ejector plate 11 to move vertically upward, and drives the ejector rod 13 to slide upward along the direction of the top groove 19, thereby lifting and removing the workpiece that may be stuck to the inner wall of the cavity mold 18 at the top of the top groove 19. The return spring 12 is compressed, completing the demolding process. Then the return spring 12 returns to its original state, driving the ejector rod 13 to move downward and reset.

[0034] In this embodiment, four hydraulic rods 8 are fixedly connected to both sides of the bottom end of the upper mold base 6. The hydraulic rods 8 pass through the lower mold base 4 and the punch press 3 respectively, and are slidably connected to the through part. The hydraulic rods 8 are connected to the inside of the hydraulic cylinder 2.

[0035] In the above scheme, the hydraulic rod 8 is the stamping power component of this device. The hydraulic cylinder 2 is used to make the hydraulic rod 8 move the upper die seat 6 in the vertical direction, so that the upper punch 7 slides down to impact and press against the die 18 to complete the stamping process.

[0036] Working principle: When operating and using this utility model, as follows... Figures 1 to 4As shown, during use, the workpiece to be processed is fed into the top of the die cavity 18 via the tool cart axle. Then, the second electric actuators 902 on both sides drive the two clamping plates 903 to move closer to both sides of the die cavity 18, so that the clamping plates 903 clamp the workpiece to be stamped on both sides. The hydraulic cylinder 2 causes the hydraulic rod 8 to move the upper die seat 6 in the vertical direction, so that the upper punch 7 slides downward to impact and press against the die cavity 18. At the moment of stamping, the telescopic rod 504 extends and retracts, and the nitrogen spring 502 and the hydraulic damper 506 work together as the core shock absorption component to absorb the main stamping impact energy. To reduce vibration to the equipment and mold, the polyurethane buffer pad 16 evenly disperses the impact force, and together with the buffer and shock absorption component 5, it further plays a buffering role. Finally, the upper punch 7 is lifted, the clamping plates 903 on both sides are released, and the first electric push rod 10 drives the ejector plate 11 to move vertically upward, driving the ejector rod 13 to slide upward along the direction of the top groove 19, thereby lifting and removing the workpiece that may be stuck to the inner wall of the die 18 at the top of the top groove 19. The return spring 12 is compressed, completing the demolding process. Then the return spring 12 returns to its original state, driving the ejector rod 13 to move downward and reset.

[0037] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism, characterized in that: Includes a base plate (1), on which two hydraulic cylinders (2) are symmetrically fixedly mounted at the top of the base plate (1), and a punch press (3) is fixedly connected to the top of the two hydraulic cylinders (2). A lower die base (4) is fixedly mounted at the top of the punch press (3), and four buffer and shock-absorbing components (5) are fixedly mounted at the four corners of the top of the lower die base (4). The four buffer and shock-absorbing components (5) are symmetrically distributed in pairs at the top of the lower die base (4), and two clamping components (9) are symmetrically fixedly mounted on both sides of the top of the lower die base (4). The buffer and shock absorption assembly (5) includes an upper connecting ring (501), a nitrogen spring (502) is fixedly sleeved at the bottom end of the upper connecting ring (501), a first middle connecting ring (503) is fixedly sleeved on the outer wall of the bottom end of the nitrogen spring (502), a telescopic rod (504) is fixedly sleeved at the bottom end of the first middle connecting ring (503), a second middle connecting ring (505) is fixedly sleeved on the outer wall of the bottom end of the telescopic rod (504), a hydraulic buffer (506) is fixedly sleeved at the bottom end of the second middle connecting ring (505), and the hydraulic buffer (506) is fixedly mounted on the top end of the lower mold base (4) by bolts.

2. The tool cart axle cold forging stamping die with buffer and shock absorption mechanism according to claim 1, characterized in that: The upper connecting ring (501) is fixedly connected to the top of the upper mold base (6), and the bottom end is fixedly provided with a polyurethane buffer pad (16). The bottom end of the polyurethane buffer pad (16) is fixedly provided with an upper pad plate (15). The bottom end of the upper pad plate (15) is fixedly connected with an upper fixing plate (17) by screws. The bottom end of the upper fixing plate (17) is fixedly connected with an upper punch (7).

3. The tool cart axle cold forging stamping die with a buffer and shock absorption mechanism according to claim 1, characterized in that: The lower mold base (4) is fixedly provided with a lower pad plate (14) at the top end. The lower pad plate (14) is fixedly provided with a lower fixing plate (20) by screws at the top end. The lower fixing plate (20) is fixedly connected with a cavity mold (18) at the top end. The cavity mold (18) has a top groove (19) inside.

4. The tool cart axle cold forging stamping die with buffer and shock absorption mechanism according to claim 1, characterized in that: The clamping assembly (9) includes a support leg (901), which is fixedly mounted on the top of the lower mold base (4). A second electric push rod (902) is fixedly mounted on the top of the support leg (901), and a clamping plate (903) is fixedly mounted on one side of the second electric push rod (902). Two locking blocks (904) are fixedly mounted on the bottom of one side of the clamping plate (903).

5. A cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism according to claim 3, characterized in that: The concave mold (18) has four symmetrical slots (21) on both sides, and the inner wall of the slot (21) is slidably connected to the outer wall of the block (904).

6. A cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism according to claim 1, characterized in that: The top of the base plate (1) is fixedly provided with a first electric push rod (10), the telescopic end of the first electric push rod (10) is fixedly connected to an ejector plate (11), the top of the ejector plate (11) is fixedly connected to a push rod (13), the top of the push rod (13) is slidably connected to the inner wall of the top groove (19), the top of the ejector plate (11) is fixedly connected to a return spring (12), the top of the return spring (12) is connected to a positioning plate (22), and the return spring (12) is fixedly sleeved on the outer wall of the push rod (13).

7. A cold forging stamping die for a tool cart axle with a buffer and shock absorption mechanism according to claim 2, characterized in that: Four hydraulic rods (8) are fixedly connected to both sides of the bottom end of the upper mold base (6). The hydraulic rods (8) pass through the lower mold base (4) and the punch press (3) respectively, and are slidably connected to the through part. The hydraulic rods (8) are connected to the inside of the hydraulic cylinder (2).

Images