A stamping die for forklift chassis parts

Abstract

This utility model provides a stamping die for forklift chassis parts. A top plate is fixedly mounted on a base plate via side plates. A light shaft is fixedly mounted between the base plate and the top plate. An upper template is movably mounted on the light shaft. An assembly is fixedly mounted on the top of the upper template. A lower template and auxiliary components are fixedly mounted on the base plate. The auxiliary components include an outer cylinder and a push rod. The push rod is movably connected to the inner wall of the outer cylinder via a sealing ring. A rubber gasket is fixedly mounted on the top of the push rod. An adjustable one-way valve is fixedly mounted on the outer cylinder, and the adjustable one-way valve is equipped with a threshold adjustment bolt. When the upper template is pressed down, it first contacts the push rod of the auxiliary component and presses down. The push rod is movably connected to the inner wall of the outer cylinder via the sealing ring, forming a cylinder structure in the auxiliary component. When the push rod is pressed down, the air pressure inside the outer cylinder increases. After the upper and lower templates close and the stamping operation is completed, the pressure on the upper template is released. At this time, the push rod, under the action of air pressure, pushes the upper template open, quickly completing the mold opening process and improving processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a stamping mold for forklift chassis parts. Background Technology

[0002] With the development of the automotive industry, competition is becoming increasingly fierce. Improving efficiency and reducing costs have become key issues that automakers need to address. Stamping, as the leading process among the four major automotive manufacturing processes, plays a crucial role in automotive production. However, existing stamping dies are complex in structure, making mold opening difficult and impacting processing efficiency.

[0003] Chinese utility model patent CN211839827U discloses a stamping die for vehicle chassis parts, including a base plate, a support rod fixedly connected to the top of the base plate, a top plate fixedly connected to the top of the support rod, a slider 1 movably sleeved on the outer side of the support rod, a fixed rod movably connected to the outer side of the fixed shaft, and a rotating rod 4 movably connected to the front side of the slider 1. By rotating an external rotating wheel, the rotating rod 2, installed on the outer side of the external rotating wheel, drives the upper template fixedly connected to its bottom to rotate, thus achieving periodic rotation. The rotation of the upper template causes the slider 2, fixedly connected to the outer side, to move up and down on the outer side of the support rod. When the slider 2 moves downwards, it drives the rotating rod 3 to rotate and causes the fixed rod to rotate clockwise, ultimately causing the top of the lower template inside the slider 1 to fit against the bottom of the upper template inside the slider 2, thus achieving periodic stamping. However, using this complex mold makes mold opening difficult, affecting processing efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a stamping die for forklift chassis parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stamping die for forklift chassis parts, comprising a base plate, a top plate fixedly mounted on the base plate via side plates, an optical shaft fixedly mounted between the base plate and the top plate, an upper template movably mounted on the optical shaft, an assembly fixedly mounted on the top of the upper template, a lower template and an auxiliary component fixedly mounted on the base plate, the auxiliary component comprising an outer cylinder and a push rod, the push rod being movably connected to the inner wall of the outer cylinder via a sealing ring, a rubber pad fixedly mounted on the top of the push rod, and an adjustable one-way valve fixedly mounted on the outer cylinder, the adjustable one-way valve being provided with a threshold adjustment bolt.

[0006] Preferably, a return spring is fixedly installed inside the outer cylinder.

[0007] Preferably, the lower template is fixedly equipped with guide posts, and the upper template is provided with guide holes, with the guide posts and guide holes being inserted into each other.

[0008] Preferably, the outer periphery of the guide hole is provided with a bevel.

[0009] Preferably, anti-collision rubber is fixedly installed on the top of the upper template.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The base plate of this utility model is fixedly installed with an auxiliary component, which includes an outer cylinder and a push rod. The push rod is movably connected to the inner wall of the outer cylinder through a sealing ring. When the upper template is pressed down, the upper template first contacts the push rod of the auxiliary component and presses down the push rod. The push rod is movably connected to the inner wall of the outer cylinder through the sealing ring, so that the auxiliary component forms a cylinder structure. When the push rod is pressed down, the air pressure in the outer cylinder increases. After the upper and lower templates are closed and the stamping operation is completed, the upper template is relieved of pressure. At this time, the push rod pushes the upper template open under the action of air pressure, quickly completing the mold opening process and improving processing efficiency.

[0012] The outer cylinder of the auxiliary component of this utility model is fixedly installed with an adjustable one-way valve. The adjustable one-way valve is equipped with a threshold adjustment bolt. By rotating the threshold adjustment bolt, the reverse pressure threshold of the adjustable one-way valve is adjusted, thereby controlling the air pressure threshold of the auxiliary component. The adjustment is made according to the force required when opening the mold, thereby reducing the impact of the pressure of the auxiliary component on the stamping process. Attached Figure Description

[0013] Figure 1 This is the first perspective structural view of this utility model.

[0014] Figure 2 This is the second perspective structural view of this utility model.

[0015] Figure 3 This is a structural view of the auxiliary component of this utility model.

[0016] Figure 4 This is a cross-sectional structural view of the auxiliary component of this utility model.

[0017] The diagram is labeled as follows: base plate 1, side plate 2, top plate 3, optical axis 4, upper template 5, assembly 6, lower template 7, auxiliary components 8, outer cylinder 9, top rod 10, sealing ring 11, rubber pad 12, adjustable one-way valve 13, threshold adjustment bolt 14, reset spring 15, guide post 16, guide hole 17, anti-collision rubber 18. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1:

[0020] This utility model provides a stamping die for a forklift chassis component, including a base plate 1. A top plate 3 is fixedly mounted on the base plate 1 via side plates 2. A light shaft 4 is fixedly mounted between the base plate 1 and the top plate 3. An upper template 5 is movably mounted on the light shaft 4. An assembly 6 is fixedly mounted on the top of the upper template 5. A lower template 7 and an auxiliary component 8 are fixedly mounted on the base plate 1. The auxiliary component 8 includes an outer cylinder 9 and a push rod 10. The push rod 10 is movably connected to the inner wall of the outer cylinder 9 via a sealing ring 11. A rubber pad 12 is fixedly mounted on the top of the push rod 10. An adjustable one-way valve 13 is fixedly mounted on the outer cylinder 9, and the adjustable one-way valve 13 is equipped with a threshold adjustment bolt 14. A return spring 15 is fixedly mounted inside the outer cylinder 9. A guide post 16 is fixedly mounted on the lower template 7. A guide hole 17 is provided on the upper template 5, and the guide post 16 is inserted into the guide hole 17. The outer periphery of the guide hole 17 is provided with a bevel. An anti-collision rubber 18 is fixedly mounted on the top of the upper template 5.

[0021] Through the above technical solution, the base plate 1 of this utility model is fixedly installed with an auxiliary component 8. The auxiliary component 8 includes an outer cylinder 9 and a push rod 10. The push rod 10 is movably connected to the inner wall of the outer cylinder 9 through a sealing ring 11. When the upper template 5 is pressed down, the upper template 5 first contacts the push rod 10 of the auxiliary component 8 and presses down the push rod 10. The push rod 10 is movably connected to the inner wall of the outer cylinder 9 through the sealing ring 11, so that the auxiliary component 8 forms a cylinder structure. When the push rod 10 is pressed down, the air pressure in the outer cylinder 9 increases. After the upper template 5 and the lower template 7 are closed and the stamping operation is completed, the upper template 5 is relieved of pressure. At this time, the push rod 10 pushes the upper template 5 open under the action of air pressure, quickly completing the mold opening process and improving processing efficiency.

[0022] An adjustable one-way valve 13 is fixedly installed on the outer cylinder 9 of the auxiliary component 8 of this utility model. The adjustable one-way valve 13 is equipped with a threshold adjustment bolt 14. By rotating the threshold adjustment bolt 14, the reverse pressure threshold of the adjustable one-way valve 13 is adjusted, thereby controlling the air pressure threshold of the auxiliary component 8. The pressure is adjusted according to the force required when opening the mold, thereby reducing the influence of the pressure of the auxiliary component 8 on the stamping process.

[0023] Example 2:

[0024] In this embodiment, the base plate 1 serves as the fundamental support component of the entire mold. Its two sides are fixedly connected to the top plate 3 via side plates 2, forming a stable frame structure. Several optical shafts 4 are vertically installed between the base plate 1 and the top plate 3. These optical shafts 4 not only act as guides but also provide a precise trajectory for the movement of the upper template 5. The upper template 5 slides with the optical shafts 4 via linear bearings, ensuring smooth up-and-down movement during the stamping process.

[0025] A fitting 6 is fixedly installed at the top center of the upper template 5. This fitting 6 adopts a standard interface design and can be quickly connected to the output end of various stamping equipment. When the stamping equipment is working, the pressure is transmitted to the upper template 5 through the fitting 6, driving it to move downward along the optical axis 4. A lower template 7 is correspondingly installed on the base plate 1. Its working surface is machined according to the shape requirements of the forklift chassis parts, and it cooperates with the upper template 5 to complete the stamping process.

[0026] Auxiliary component 8 is a key feature of this invention, consisting of an outer cylinder 9, a push rod 10, a sealing ring 11, and an adjustable one-way valve 13. The outer cylinder 9 is vertically fixed to the base plate 1 and has a precision-machined cylinder cavity inside. The push rod 10 is made of high-strength alloy steel, and its lower end forms an airtight sliding fit with the inner wall of the outer cylinder 9 through a special sealing ring 11. An elastic rubber pad 12 is installed on the top of the push rod 10. When the upper template 5 is pressed down, it first contacts the rubber pad 12 to avoid direct metal-to-metal collision that would cause noise and wear.

[0027] During the stamping process, the upper mold plate 5 presses down, pushing the ejector pin 10 downwards and compressing the air inside the outer cylinder 9. Due to the reverse sealing characteristic of the adjustable one-way valve 13, the compressed air cannot be discharged quickly, forming a buffer air cushion effect. This structural design makes the mold closing process smoother and effectively reduces impact vibration. After the stamping is completed and the pressure is released, the compressed air pushes the ejector pin 10 upwards to reset, quickly lifting the upper mold plate 5 to achieve automatic mold opening.

[0028] The adjustable check valve 13 is fixed to the side wall of the outer cylinder 9 via a threaded connection, and has a precision pressure regulating mechanism inside. The threshold adjusting bolt 14 can change the preload of the valve core, thereby precisely controlling the opening pressure threshold of the check valve. The operator can rotate the adjusting bolt to set the optimal air pressure parameters according to the mold opening force requirements of different workpieces. This adjustable design ensures sufficient mold opening force while avoiding excessive resistance from the auxiliary components 8 to the stamping process.

[0029] During operation, the stamping equipment drives the upper die plate 5 downwards along the optical axis 4 via the assembly 6. The upper die plate 5 first contacts the rubber pad 12 of the auxiliary component 8, where compressed air provides a cushioning effect. The pressure continues to decrease until the upper die plate 5 and the lower die plate 7 are fully closed, completing the workpiece forming. After the pressure is released, the air pressure stored in the outer cylinder 9 pushes the ejector rod 10 upwards, quickly separating the upper and lower die plates 7. The entire mold opening and closing process requires no additional power unit and is completed automatically using air pressure, significantly improving production efficiency.

[0030] Example 3:

[0031] In this embodiment, a return spring 15 is fixedly installed inside the outer cylinder 9. During the assembly of the auxiliary component 8, the return spring 15 is first pre-compressed and then installed at the bottom position inside the outer cylinder 9 to maintain a certain initial preload. The return spring 15 is made of high-strength alloy spring steel, which has excellent elastic properties and fatigue resistance. The bottom of the push rod 10 is designed with an annular groove that matches the return spring 15, ensuring that the return spring 15 can stably abut against the bottom of the push rod 10.

[0032] When the stamping process begins, the upper die 5 moves downward under the drive of the stamping equipment, first contacting and applying pressure to the rubber pad 12 of the auxiliary component 8. At this time, the push rod 10 moves downward under the pressure of the upper die 5, compressing the gas space inside the outer cylinder 9. Due to the presence of the adjustable one-way valve 13, a certain amount of air is discharged according to the set air pressure threshold. As the push rod 10 continues to move downward, the return spring 15 is further compressed to store elastic potential energy.

[0033] After stamping is completed, the stamping equipment releases the pressure on the upper template 5. Because a small portion of the air inside the outer cylinder 9 is discharged through the adjustable one-way valve 13, the push rod 10 cannot return to its position by air pressure. The push rod 10 is returned to its initial position by the return spring 15.

[0034] Example 4:

[0035] In this embodiment, the lower template 7 is fixedly equipped with guide pillars 16, and the upper template 5 is provided with guide holes 17. The guide pillars 16 and guide holes 17 are inserted into each other. During the stamping process, the precise fit between the guide pillars 16 and guide holes 17 ensures that the relative positions between the upper template 5 and the lower template 7 remain accurately aligned. When the stamping equipment applies pressure to the upper template 5 through the assembly 6, the guide pillars 16 move along the guide holes 17, effectively preventing the upper template 5 from shifting or tilting during the stamping process. This guiding structure is particularly suitable for workpieces such as forklift chassis parts that require high-precision stamping, ensuring the dimensional accuracy and shape consistency of the stamped parts.

[0036] The guide pillar 16 and the optical axis 4 form a dual guiding mechanism. The optical axis 4 mainly guides the overall lifting and lowering of the upper mold plate 5, while the guide pillar 16 ensures precise positioning between the upper mold plate 5 and the lower mold plate 7. This dual guiding design greatly improves the overall rigidity and stability of the mold, making it particularly suitable for stamping materials with large thickness or high strength. The arrangement of the guide pillar 16 has been optimized through finite element analysis, effectively balancing various forces generated during the stamping process.

[0037] Example 5:

[0038] In this embodiment, the guide hole 17 has a beveled structure on its outer periphery. This beveled structure is arranged in a ring at the entrance of the guide hole 17, with an inclination angle of 15-45 degrees. When the upper template 5 moves downward to close the mold, the beveled surface on the outer periphery of the guide hole 17 can form initial contact with the end of the guide post 16. Through the guiding effect of the bevel, the guide post 16 is accurately aligned and smoothly inserted into the guide hole 17. This structural design effectively solves the problem of difficult alignment between the guide post 16 and the guide hole 17 in traditional stamping dies, and can significantly improve the mold closing accuracy and stability, especially in high-speed stamping processes.

[0039] The inclined surface structure features a continuous and smooth transition design, and its surface is precision ground to ensure smooth contact with the guide post 16. During mold closing, when the end of the guide post 16 contacts the inclined surface of the guide hole 17, the inclination angle of the inclined surface automatically guides the guide post 16 to the center position of the guide hole 17. Even minor positional deviations can be corrected by the guiding action of the inclined surface. This automatic centering function greatly reduces the difficulty of adjustment during mold assembly and improves production efficiency.

[0040] During the stamping process, the inclined structure also acts as a buffer. When the upper die plate 5 is pressed down rapidly, the contact between the guide post 16 and the inclined surface of the guide hole 17 can reduce the impact and prevent the die components from being damaged by the instantaneous impact. This buffering effect is particularly suitable for high-speed stamping conditions, and can effectively reduce noise and vibration, and improve processing quality.

[0041] Example 6:

[0042] In this embodiment, an anti-collision rubber 18 is fixedly installed on the top of the upper template 5. When the stamping equipment drives the upper template 5 to move upward along the optical axis 4, the anti-collision rubber 18, as a buffer component, first contacts the top plate 3. The anti-collision rubber 18 is made of highly elastic rubber material, and its thickness is designed according to the stroke of the upper template 5 and the parameters of the stamping equipment to ensure that it can effectively absorb impact energy when the upper template 5 reaches its highest position.

[0043] The anti-collision rubber 18 is fixed to the top surface of the upper mold plate 5 with a high-strength adhesive, and its installation position is precisely aligned with the lower surface of the top plate 3. During the mold operation, the upper mold plate 5 reciprocates under the drive of the stamping equipment. When it needs to return to its initial position after the stamping process is completed, the anti-collision rubber 18 plays a crucial role in buffering and protecting the mold. This structural design avoids direct metal-to-metal collisions and effectively reduces noise and vibration.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A stamping die for a forklift chassis component, comprising a base plate, wherein a top plate is fixedly mounted on the base plate via side plates, characterized in that, An optical axis is fixedly installed between the base plate and the top plate. An upper template is movably installed on the optical axis. An assembly is fixedly installed on the top of the upper template. A lower template and an auxiliary component are fixedly installed on the base plate. The auxiliary component includes an outer cylinder and a top rod. The top rod is movably connected to the inner wall of the outer cylinder through a sealing ring. A rubber pad is fixedly installed on the top of the top rod. An adjustable one-way valve is fixedly installed on the outer cylinder. The adjustable one-way valve is equipped with a threshold adjustment bolt.

2. The forklift chassis stamping die according to claim 1, characterized in that, A return spring is fixedly installed inside the outer cylinder.

3. The forklift chassis stamping die according to claim 1, characterized in that, The lower template is fixedly installed with guide posts, and the upper template is provided with guide holes, with the guide posts and guide holes being inserted into each other.

4. The forklift chassis stamping die according to claim 3, characterized in that, The outer periphery of the guide hole is provided with a slope.

5. A stamping die for a forklift chassis part according to claim 1, characterized in that, Anti-collision rubber is fixedly installed on the top of the upper template.

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