Nitrogen spring mold

Abstract

The utility model relates to the related technical field of die machining, in particular to a nitrogen spring die which comprises a lower die base, a female die plate, a female die base plate, an upper die base, a punch, a discharging plate, a discharging back plate, an ejection component, a nitrogen spring, a first positioning hole, a second positioning hole and an air guide hole. According to the nitrogen spring die, in the punching process, the punch is inserted into the first positioning hole of the discharging back plate and is aligned with the first positioning hole through the second positioning hole, the nitrogen springs are evenly arranged on the periphery of the punch and are tightly matched with the punch, and when the punch moves downwards, the nitrogen springs are compressed under the acting force of the discharging plate; therefore, extra force is provided to improve the stamping effect and protect die parts, damage caused by high pressure is reduced, meanwhile, the nitrogen spring increases the material pressing force of the discharging plate in the stamping process, materials are effectively promoted to flow into the female die, the wall thickness of a workpiece is increased, and the stability of product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of mould processing, especially to a nitrogen spring mould. BACKGROUND

[0002] The nitrogen spring mould is a mould auxiliary device using high-pressure nitrogen gas as an elastic element, mainly used for providing controllable and stable elastic pressure or buffer force in stamping, injection molding, die casting and other processes. Compared with traditional mechanical springs or polyurethane springs, nitrogen springs have the advantages of long service life, stable output, small space occupation, and are widely used in precision manufacturing fields such as automobiles, home appliances and electronics.

[0003] In the related art, a nitrogen spring mould with publication number CN218693155U includes a base plate, a mounting top seat, a mounting bottom seat, a vertical rod, an electric cylinder, a first limiting block, a first nitrogen spring, a first fixed block, an upper mould, a second limiting block, a second nitrogen spring, a second fixed block, a lower mould, an auxiliary mechanism, a groove body, a third nitrogen spring, a first sliding block and a connecting rod. The electric cylinder drives the mounting top seat to move vertically on the vertical rod, and then the upper mould and the lower mould are closed to process the material. The first nitrogen spring and the second air spring work to drive the upper mould and the lower mould to move vertically, and then the connecting rod in the auxiliary mechanism drives the sliding block to move, and then the sliding block slides in the groove body to drive the third nitrogen spring to work, so that the device is more stable when processing the material, thereby preventing the product from deforming and having size errors, and further improving the quality of product production.

[0004] Due to the design characteristics of the nitrogen spring mould in the above-mentioned technology, the airflow cannot be effectively directed when the nitrogen spring is working. This directly affects the accurate force control of the nitrogen spring on the concave die, and further leads to a decrease in efficiency during the mould processing process. Specifically, poor airflow guidance will affect the working efficiency of the nitrogen spring, so that it cannot accurately adjust the pressure and stabilize the position of the mould. SUMMARY

[0005] The utility model solves the problems in the related art and proposes a nitrogen spring mould. The clamping assembly can fix the port of the pipe rod during forming. The driving assembly drives the forming wheel to rotate and feeds the pipe rod body during forming through the feeding unit. This effectively ensures the efficiency of pipe bending forming of the pipe rod body. In addition, the feeding unit achieves the purpose of automatic feeding of the pipe rod during bending forming through a compact mechanical structure, avoids the use of electrical equipment, and has the characteristics of saving resources.

[0006] In order to solve the above technical problems, the utility model is through the following technical scheme realizes: a nitrogen gas spring mould, including lower die seat, the female die plate of setting in the lower die seat upper end surface, the female die backing plate of setting between the female die plate and the lower die seat, the upper die seat of setting relative to lower die seat, the punch of setting in the upper die seat middle position, with the upper die seat connects the unloading plate, the unloading backboard of setting between the unloading plate and the upper die seat, the ejection component of setting between the unloading backboard and the upper die seat, nitrogen gas spring is uniformly arranged in the punch outer periphery, the first positioning hole of setting in the unloading backboard with the punch is adapted, the second positioning hole of setting in the unloading plate with the punch is adapted and the gas guide hole of setting in the first positioning hole outer periphery with the nitrogen gas spring is adapted, the upper die seat circumscribes with the stamping equipment.

[0007] Through adopting the above technical scheme, the utility model discloses a stamping die, under the action of stamping equipment, the upper die seat moves down, drives the punch to stamp the workpiece material on the female die plate, in the stamping process, the punch inserts the first positioning hole of unloading backboard, and is aligned with the punch through the second positioning hole, nitrogen gas spring is uniformly arranged in the punch outer periphery and is closely matched with it, when the punch moves down, nitrogen gas spring is compressed under the action of unloading plate, the pressure in the mould is transmitted to the nitrogen gas spring of unloading backboard through the first positioning hole and the gas guide hole, thereby providing additional power to improve the stamping effect and protect the mould parts, reduce the damage caused by high pressure, and nitrogen gas spring increases the pressure of the unloading plate during stamping, effectively promotes the material to flow into the female die, enhances the wall thickness of the workpiece, and improves the stability of product quality.

[0008] As a preferred scheme, the lower die seat and the female die backing plate are connected by a fixing screw, and the female die backing plate is connected with the female die by a fixing screw.

[0009] By adopting the above technical scheme, the stable fixing and convenient disassembly of the female die are realized. When the female die backing plate is tightly connected with the lower die seat by the fixing screw, the female die backing plate is fixedly connected with the female die by the fixing screw. This design not only ensures the accurate positioning between the components during the working process of the mould, but also facilitates the user to easily disassemble and replace the female die when needed.

[0010] As a preferred embodiment, the ejector component includes ejector rods evenly distributed on the unloading back plate and ejector sleeves adapted to the ejector rods on the upper mold base. Each ejector rod is connected to the unloading back plate by a fixing pin, and the unloading back plate and the unloading plate are connected by fixing screws.

[0011] By adopting the above technical solution, the ejector rod is securely connected to the stripper back plate by a fixing pin, and the stripper back plate is connected to the stripper plate by fixing screws. As the stripper back plate moves upward under the drive of the upper mold base, the ejector sleeve and the ejector rod interact, pushing the ejector rod upward through the ejector sleeve, thereby effectively ejecting the workpiece.

[0012] As a preferred embodiment, the outer periphery of the push rod sleeve is provided with a mounting ear plate, which is fixedly connected to the upper mold base by a fixing pin, and the inner wall of the push rod sleeve is set as a smooth arc surface.

[0013] By adopting the above technical solution, the push rod sleeve can easily guide the movement direction of the push rod, thereby facilitating the movement direction of the unloading plate and effectively ensuring the stability of the unloading plate during unloading.

[0014] As a preferred embodiment, the air guide hole is configured to be through-hole, and the inner wall of the air guide hole is configured to be a smooth arc surface when the punch moves downward.

[0015] By adopting the above technical solution, the nitrogen spring is compressed by the force of the stripper plate. The pressure inside the mold is transmitted to the nitrogen spring in the stripper back plate through the first positioning hole and the air guide hole, thereby providing additional force to improve the stamping effect and protect the mold components, reducing damage caused by high pressure. At the same time, the nitrogen spring increases the clamping force of the stripper plate during the stamping process, effectively promoting the flow of material into the die cavity, enhancing the wall thickness of the workpiece, and improving the stability of product quality.

[0016] As a preferred embodiment, it further includes exhaust channels uniformly arranged on the upper end face of the upper mold base and connected to the outlet end of the nitrogen spring, the exhaust channels being interconnected.

[0017] By adopting the above technical solution, the exhaust channel facilitates the guidance of the exhaust direction of the nitrogen spring, avoiding positional interference between adjacent nitrogen springs during exhaust.

[0018] As a preferred embodiment, in order to ensure the stability of mold closing, it also includes guide posts respectively disposed at the four corners of the cavity mold base and guide sleeves disposed on the upper mold base that are adapted to the guide posts. The guide posts are connected to the cavity mold base by fixing screws.

[0019] By adopting the above technical solution, the guide post and the guide sleeve cooperate with each other to ensure the quality of mold closing.

[0020] Compared with the prior art, the beneficial effects of this utility model are: This utility model;

[0021] 1. The structure, consisting of components such as support base, support frame, mounting groove, seal, support ring, push rod and pushing assembly, enables mechanized packing and pressure control of the chromatographic column packing material. Compared with traditional manual packing, it can provide a more uniform and stable pressure distribution, ensuring that the packing particles are evenly distributed in the column, thereby significantly reducing column efficiency variability and improving the performance stability of the chromatographic column.

[0022] 2. The column body is placed in the mounting slot, and the seal ensures that the lower end face of the column is sealed.

[0023] 3. The support ring and mounting groove are coaxially aligned to clamp and fix the outer periphery of the chromatographic column body. The push rod is coaxial with the support ring and is pushed by the pushing component to compress the packing material inside the column, thereby applying axial pressure to ensure that the packing material is uniformly and tightly packed inside the column. This mechanized packing process is faster and more stable. The packing density can be adjusted by changing the force of the pushing component, achieving precise control of the packing material under different experimental conditions. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of the overall structure of the nitrogen spring mold of this utility model;

[0025] Figure 2 This is an exploded view of the overall structure of the nitrogen spring mold of this utility model;

[0026] Figure 3 This is a structural schematic diagram of the assembly of the upper mold base and the nitrogen spring in the nitrogen spring mold of this utility model;

[0027] Figure 4 This is a schematic diagram of the overall structure of the nitrogen spring mold of this utility model.

[0028] In the picture:

[0029] 100. Punch; 11. Lower die holder; 12. Die plate; 121. Die backing plate; 2. Upper die holder; 21. Venting channel; 31. Ejector backing plate; 311. First positioning hole; 312. Air guide hole; 32. Ejector plate; 321. Second positioning hole; 4. Nitrogen spring; 51. Ejector sleeve; 511. Ejector rod; 61. Guide post; 611. Guide sleeve. Detailed Implementation

[0030] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0036] like Figures 1 to 4 As shown, a nitrogen spring mold includes a lower mold base 11, a concave template 12 disposed on the upper surface of the lower mold base 11, and a concave mold pad 121 disposed between the concave template 12 and the lower mold base 11. The lower mold base 11 and the concave mold pad 121 are connected by fixing screws, and the concave mold pad 121 is connected to the concave mold by fixing screws, thus achieving the functions of stable fixing of the concave mold and easy disassembly and assembly. After the concave mold pad 121 and the lower mold base 11 are fastened together by fixing screws, the concave mold pad 121 is further fixedly connected to the concave mold by fixing screws, forming a reliable fixing structure. This design not only ensures accurate positioning between the components of the mold during operation, but also allows users to easily disassemble and replace the concave mold when needed.

[0037] Please refer to the details. Figure 2 , Figure 3 and Figure 4The components include: an upper die base 2 relative to the lower die base 11; a punch 100 located in the middle of the upper die base 2; a stripper plate 32 connected to the upper die base 2; a stripper back plate 31 located between the stripper plate 32 and the upper die base 2; an ejector component located between the stripper back plate 31 and the upper die base 2; nitrogen springs evenly distributed around the outer periphery of the punch 100; a first positioning hole 311 on the stripper back plate 31 that matches the punch 100; a second positioning hole 321 on the stripper plate 32 that matches the punch 100; and a hole 311 located in the first positioning hole 311. The outer periphery of the upper die base 2 is fitted with a nitrogen spring 4, and the upper die base 2 is externally connected to the stamping equipment. The ejection component includes ejector rods 511 evenly distributed on the unloading back plate 31 and ejector sleeves 51 on the upper die base 2 that are fitted with the ejector rods 511. Each ejector rod 511 is connected to the unloading back plate 31 by a fixing pin, and the unloading back plate 31 and the unloading plate 32 are connected by fixing screws. The ejector rods 511 are firmly connected to the unloading back plate 31 by fixing pins, and the unloading back plate 31 is connected to the unloading plate 32 by fixing screws. As the unloading back plate 31 moves upward under the drive of the upper die base 2, the ejector sleeves 51 and the ejector rods 511 interact, and the ejector sleeves 51 push the ejector rods 511, causing the ejector rods 511 to move upward, thereby effectively ejecting the workpiece. This process not only ensures the smooth demolding of plastic parts, but also ensures the stability and reliability of the mold structure, improves production efficiency, and reduces product quality problems caused by incomplete ejection.

[0038] Please refer to the details. Figure 3 and Figure 4 The outer periphery of the ejector sleeve 51 is provided with an mounting ear plate, which is fixedly connected to the upper mold base 2 by a fixing pin. The inner wall of the ejector sleeve 51 is set as a smooth arc surface, which facilitates the guidance of the movement direction of the ejector rod 511, thereby facilitating the guidance of the movement direction of the unloading plate 32 and effectively ensuring the stability of the unloading plate 32 during unloading.

[0039] Please refer to the details. Figure 1 , Figure 3 and Figure 4 The air guide hole 312 is designed to be through, and the inner wall of the air guide hole 312 is designed to be a smooth arc surface. When the punch 100 moves downward, the nitrogen spring 4 is compressed by the force of the stripper plate 32. The pressure inside the mold is transmitted to the nitrogen spring 4 of the stripper back plate 31 through the first positioning hole 311 and the air guide hole 312, thereby providing additional force to improve the stamping effect and protect the mold components, reducing damage caused by high pressure. At the same time, the nitrogen spring 4 increases the pressing force of the stripper plate 32 during the stamping process, effectively promoting the flow of material into the die cavity, enhancing the wall thickness of the workpiece, and improving the stability of product quality.

[0040] Please refer to the details. Figure 1, Figure 3 and Figure 4 It also includes exhaust channels 21 that are evenly distributed on the upper end face of the upper mold base 2 and connected to the exhaust end of the nitrogen spring. The exhaust channels 21 are interconnected and can guide the exhaust direction of the nitrogen spring 4, thus avoiding positional interference between adjacent nitrogen springs 4 during exhaust.

[0041] Please refer to the details. Figure 2 , Figure 3 and Figure 4 In addition, to ensure the stability of mold closing, guide posts 61 are respectively set at the four corners of the cavity mold base 121, and guide sleeves 611 adapted to the guide posts 61 are set on the upper mold base 2. The guide posts 61 are connected to the cavity mold base 121 by fixing screws. The guide posts 61 and guide sleeves 611 cooperate with each other to ensure the quality of mold closing.

[0042] In this embodiment, during use, the workpiece material enters the die cavity, and the upper die holder 2 moves downward under the action of the stamping equipment, driving the punch 100 to stamp the workpiece material on the die plate 12. During the stamping process, the punch 100 inserts into the first positioning hole 311 of the stripper back plate 31 and aligns with the punch 100 through the second positioning hole 321. Nitrogen springs 4 are evenly distributed around the outer periphery of the punch 100 and fit tightly with it. When the punch 100 moves downward, the nitrogen springs 4 are compressed by the force of the stripper plate 32, and the pressure inside the die is transmitted to the die through the first positioning hole 311 and the air guide hole 312. The nitrogen spring 4 in the stripper back plate 31 provides additional force to improve the stamping effect and protect the mold components, reducing damage caused by high pressure. At the same time, the nitrogen spring 4 increases the blanking force of the stripper plate 32 during the stamping process, effectively promoting the material flow into the die cavity, enhancing the wall thickness of the workpiece, and improving the stability of product quality. When the upper die holder 2 drives the stripper back plate 31 to move upward, the ejector sleeve 51 will interact with the ejector rod 511. The ejector sleeve 51 pushes the ejector rod 511 upward through its smooth arc inner wall, thereby enabling the ejector rod 511 to smoothly eject the workpiece from the mold. Meanwhile, the mounting ear plate on the outer periphery of the ejector sleeve 51 is connected to the upper mold base 2 through fixing pins, which not only facilitates the installation and fixing of the ejector sleeve 51, but also effectively guides the movement direction of the ejector rod 511 through the ejector sleeve 51, thereby ensuring the stability of the movement direction of the stripper plate 32. In the whole process, not only is the smooth demolding of the plastic part guaranteed, but the stability and reliability of the mold structure are also improved, production efficiency is increased, and product quality problems caused by incomplete ejection are reduced.

[0043] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A nitrogen spring mold, characterized in that: Includes a lower die base (11), a concave template (12) disposed on the upper end face of the lower die base (11), a concave die pad (121) disposed between the concave template (12) and the lower die base (11), an upper die base (2) disposed relative to the lower die base (11), a punch (100) disposed in the middle of the upper die base (2), a stripper plate (32) connected to the upper die base (2), a stripper back plate (31) disposed between the stripper plate (32) and the upper die base (2), and a stripper back plate (31) disposed on the stripper back plate. (31) An ejector component between the upper die base (2), a nitrogen spring evenly arranged on the outer periphery of the punch (100), a first positioning hole (311) on the unloading back plate (31) adapted to the punch (100), a second positioning hole (321) on the unloading plate (32) adapted to the punch (100), and a guide hole (312) on the outer periphery of the first positioning hole (311) adapted to the nitrogen spring (4), the upper die base (2) being externally connected to the stamping equipment.

2. The nitrogen spring mold according to claim 1, characterized in that: The lower mold base (11) and the die pad (121) are connected by fixing screws, and the die pad (121) is connected to the die by fixing screws.

3. A nitrogen spring mold according to claim 2, characterized in that: The ejection component includes ejection rods (511) evenly arranged on the unloading back plate (31) and ejector sleeves (51) arranged on the upper mold base (2) and adapted to the ejection rods (511). Each ejection rod (511) is connected to the unloading back plate (31) by a fixing pin, and the unloading back plate (31) and the unloading plate (32) are connected by fixing screws.

4. A nitrogen spring mold according to claim 3, characterized in that: The outer periphery of the top rod sleeve (51) is provided with a mounting ear plate, which is fixedly connected to the upper mold base (2) by a fixing pin, and the inner wall of the top rod sleeve (51) is set as a smooth arc surface.

5. A nitrogen spring mold according to claim 4, characterized in that: The air guide hole (312) is configured to be through, and the inner wall of the air guide hole (312) is configured to be a smooth arc surface.

6. A nitrogen spring mold according to claim 5, characterized in that: It also includes exhaust channels (21) that are uniformly arranged on the upper end face of the upper mold base (2) and connected to the outlet end of the nitrogen spring, and the exhaust channels (21) are interconnected.

7. A nitrogen spring mold according to claim 6, characterized in that: In addition, to ensure the stability of mold closing, the mold also includes guide posts (61) respectively set at the four corners of the cavity mold pad (121) and guide sleeves (611) set on the upper mold base (2) and adapted to the guide posts (61). The guide posts (61) are connected to the cavity mold pad (121) by fixing screws.

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