Three-dimensional modeling mold and equipment for stretch forming of inner ring of spring

Abstract

The utility model discloses a stretch forming spring inner ring three-dimensional modeling mould which comprises a mould body and a forming movable assembly, the mould body is provided with a transverse channel allowing a steel belt to pass through and an action channel set allowing the forming movable assembly to act, and the action channel set is vertically arranged and connected with the transverse channel. A forming structure is arranged at the position, corresponding to the action channel set, of the transverse channel. The forming movable assembly comprises a cutting component and a forming component. The utility model further discloses forming equipment which comprises the three-dimensional modeling mold for the inner ring of the stretch forming spring. Compared with the prior art, the three-dimensional modeling of the spring to which stress is applied in advance can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of spring manufacturing, in particular to a three-dimensional modeling die and molding equipment for stretching and molding a spring inner ring. Background Art

[0002] CN201910204229.X discloses a spring stretching process comprising the following steps: feeding; compacting; stretching a steel strip into shape; varying the diameter of the strip; and cutting. The stretching process stabilizes the dimensions of the formed steel strip spring, minimizing the error in the spring force, thereby expanding the application range of the spring. In particular, by varying the spring's forming dimensions, constant-force springs, variable-force springs, and special-force springs can be manufactured, broadening the application range of springs manufactured using the stretching process.

[0003] CN202410770587.8 discloses an automatic coil spring stretching machine, comprising a base and a steel strip pressing mechanism, a steering wheel, a first elastic trimming mechanism, a steel strip pulling mechanism, and a mold forming and cutting mechanism disposed on the base. The connecting line of the steel strip pressing mechanism, the steering wheel, the first elastic trimming mechanism, and the steel strip pulling mechanism forms a Z-shaped broken line structure. The first elastic trimming mechanism comprises a transverse cylinder, a first wheel frame, a first top wheel, a second top wheel, and a steering fixed shaft. The first wheel frame is connected to the transverse cylinder, and the first and second top wheels are disposed on the first wheel frame and are used to cooperate with the steering fixed shaft to apply stress to the steel strip. Compared with the prior art, the coil spring produced by the present invention has the advantage of stable elastic force.

[0004] The above technical solutions are all for forming coil springs, but they cannot meet the requirements under special working conditions. For example, when a three-dimensional shape is required on the spring, the above spring stretch forming process and the technical solution of the automatic coil spring stretch forming machine cannot be realized.

[0005] Regarding spring molding, existing spring forming processes typically manufacture the spring without pre-deforming it. Currently, there is no solution for forming the spring after stress has been applied. This limits the flexibility of spring manufacturing and the variety of functions that can be achieved, making it difficult to meet specific engineering needs or product design requirements. Utility Model Content

[0006] The purpose of the utility model is to provide a three-dimensional shaping die and shaping equipment for a stretch-formed spring inner ring, which can realize the three-dimensional shaping of a spring to which stress is applied in advance.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A three-dimensional molding die for stretching and forming a spring inner ring comprises a die body and a forming movable component. The die body is provided with a transverse channel for a steel strip to pass through and an action channel group for the forming movable component to move. The action channel group is vertically arranged and connected to the transverse channel. A molding structure is provided on the transverse channel at a position corresponding to the action channel group. The forming movable component comprises a cutting component and a molding component.

[0009] In a preferred embodiment, the cutting member includes a tilting structure cutting rod, the forming member includes a tilting structure forming rod, the action channel group includes a tilting structure forming channel and a tilting structure cutting channel, the tilting structure forming rod is arranged in the tilting structure forming channel, and the tilting structure cutting rod is arranged in the tilting structure cutting channel.

[0010] In a preferred embodiment, the forming structure includes a tilting structure cutting hole and a tilting structure forming hole, the tilting structure cutting hole is connected to the tilting structure cutting channel, and the tilting structure forming hole is connected to the tilting structure forming channel.

[0011] In a preferred embodiment, the lower end surface of the tilting structure forming rod is provided with an inclined portion.

[0012] In a preferred embodiment, the forming component includes a first bending structure forming rod and a second bending structure forming rod, the cutting component includes a bending structure cutting rod, the action channel group includes a first bending structure forming channel, a second bending structure forming channel and a bending structure cutting channel, the first bending structure forming rod and the second bending structure forming rod are respectively arranged in the first bending structure forming channel and the second bending structure forming channel, the bending structure cutting rod is arranged in the bending structure cutting channel, and the second bending structure forming rod is located between the first bending structure forming rod and the bending structure cutting rod.

[0013] In a preferred embodiment, the forming structure includes a first bending structure forming groove and a second bending structure forming groove, and the first bending structure forming groove and the second bending structure forming groove correspond to the positions of the first bending structure forming rod and the second bending structure forming rod respectively.

[0014] In a preferred embodiment, the forming structure further includes a bending structure cutting hole, and the bending structure cutting hole is connected to the bending structure cutting channel.

[0015] In a preferred embodiment, a mounting and fixing groove is provided on the side of the mold body.

[0016] A forming device comprises the above-mentioned three-dimensional modeling die for stretching and forming the inner ring of a spring.

[0017] Compared with the prior art, the utility model provides a three-dimensional shaping die for the inner ring of a spring by stretching. The steel strip used as the manufacturing material carries stress itself, which greatly interferes with the three-dimensional shaping of the spring. The transverse channel in this die constrains the steel strip and strictly limits its range of motion when the steel strip passes through, so that the steel strip always maintains a relatively regular state, fundamentally avoiding the curling phenomenon caused by stress. The forming component undertakes the key task of shaping the spring in the three-dimensional forming process. When the steel strip moves forward in an orderly manner along the transverse channel, the forming component gradually applies force to the steel strip according to a pre-set procedure or shape requirement, shaping the steel strip into a three-dimensional shape that meets the requirements. After the steel strip is shaped by the forming component, the cutting component intervenes in time to cut the steel strip with a highly accurate cutting action. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a three-dimensional modeling die for stretching and forming the inner ring of a spring in Example 1.

[0019] Figure 2 This is a schematic structural diagram of a three-dimensional mold for stretching and forming the inner ring of a spring in Example 1 after some structures are removed.

[0020] Figure 3 This is a structural schematic diagram of a spring with a warping structure manufactured by a three-dimensional modeling die for a stretch-formed spring inner ring in Example 1.

[0021] Figure 4 It is a structural schematic diagram of a three-dimensional modeling die for stretching and forming the inner ring of a spring in Example 2.

[0022] Figure 5 This is a schematic structural diagram of a three-dimensional mold for stretching and forming the inner ring of a spring in Example 2 after some structures are removed.

[0023] Figure 6 This is a structural schematic diagram of a spring with a bent structure manufactured by a three-dimensional modeling die for stretching and forming the inner ring of a spring in Example 2.

[0024] In the picture

[0025] Mold body 1; tilting mold upper block 2; tilting mold middle block 3; cambered surface 4; tilting forming mounting block 5; tilting mold lower block 6; tilting mold mounting through hole 7; transverse channel 8; tilting structure cutting hole 9; tilting structure forming hole 10; tilting structure forming channel 11; tilting structure cutting channel 12; tilting structure cutting rod 13; tilting and cutting mounting block 14; tilting structure forming rod 15; inclined portion 16; mounting and fixing groove 17; tilting structure portion 18; first bending structure forming groove 19; second bending structure forming groove 20; bending structure cutting hole 21; first bending structure forming channel 22; second bending structure forming channel 23; bending structure cutting channel 24; block 25; first bending structure forming rod 26; second bending structure forming rod 27; bending structure cutting rod 28; first mounting slider 29; second mounting slider 30; bending structure portion 31. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0028] Example 1:

[0029] Please refer to Figures 1 to 3 A three-dimensional molding die for stretching and forming the inner ring of a spring comprises a die body 1 and a molding movable component. The die body 1 is provided with a transverse channel 8 for the steel strip to pass through and an action channel group for the molding movable component to move. The action channel group is vertically arranged and connected to the transverse channel 8. A molding structure is provided on the transverse channel 8 at a position corresponding to the action channel group. The molding movable component comprises a cutting component and a molding component.

[0030] In the three-dimensional shaping mold for the inner ring of a spring formed by stretching in this embodiment, the steel strip used as the manufacturing material itself has stress, which greatly interferes with the three-dimensional shaping of the spring. The transverse channel 8 in this mold constrains the steel strip and strictly limits its range of motion when the steel strip passes through, so that the steel strip always maintains a relatively regular state, fundamentally avoiding the curling phenomenon caused by stress. The forming component undertakes the key task of shaping the shape in the three-dimensional forming process of the spring. When the steel strip moves forward in an orderly manner along the transverse channel 8, the forming component gradually applies force to the steel strip according to the pre-set procedure or shape requirements, shaping the steel strip into a three-dimensional shape that meets the requirements. After the steel strip is shaped by the forming component, the cutting component intervenes in time to cut the steel strip with a highly accurate cutting action.

[0031] Furthermore, the cutting member includes a tilting structure cutting rod 13, the forming member includes a tilting structure forming rod 15, and the action channel group includes a tilting structure forming channel 11 and a tilting structure cutting channel 12. The tilting structure forming rod 15 is arranged in the tilting structure forming channel 11, and the tilting structure cutting rod 13 is arranged in the tilting structure cutting channel 12. The tilting structure cutting rod 13 of the cutting member and the tilting structure forming rod 15 of the forming member are respectively arranged in the tilting structure cutting channel 12 and the tilting structure forming channel 11. When the tilting structure forming rod 15 is actuated, the steel strip is formed, during which it cuts the steel strip to form a tilting structure. Subsequently, the tilting structure cutting rod 13 cuts the steel strip after the tilting structure forming rod 15 completes its action, ultimately forming a spring member with a tilting structure. The actions of the tilting structure forming rod 15 and the cutting rod are both realized by the cylinder or electric push rod on the forming equipment. Under the above structural setting, each component has a clear division of labor and close coordination, ensuring a coherent operation from steel strip forming to cutting; in addition, it can realize the forming of the warping structure in one go, greatly improving work efficiency and helping to improve the quality and efficiency of spring manufacturing.

[0032] Furthermore, the forming structure includes a tilting structure cutting hole 9 and a tilting structure forming hole 10, wherein the tilting structure cutting hole 9 is connected to the tilting structure cutting channel 12, and the tilting structure forming hole 10 is connected to the tilting structure forming channel 11. The tilting structure cutting hole 9 and the tilting structure forming hole 10 are connected to the tilting structure cutting channel 12 and the tilting structure forming channel 11, respectively. They provide the necessary space for the movement of the tilting structure forming rod 15 and the tilting structure cutting rod 13. This allows the tilting structure forming rod 15 and the tilting structure cutting rod 13 to fully perform their actions within the space constructed by their respective corresponding holes and channels, ensuring that the mold can smoothly perform the tilting structure forming and cutting operations on the steel strip.

[0033] Furthermore, the lower end surface of the tilting structure forming rod 15 is provided with an inclined portion 16. The setting of the inclined portion 16 can better form the tilting structure, ensure that the cavity structure is formed in accordance with the pre-designed concept during the spring manufacturing process, and help improve the accuracy and quality of spring forming.

[0034] In order to achieve the installation of the mold body 1, the side of the mold body 1 is provided with a mounting fixing groove 17. During the installation process, the moving fixing part of the molding equipment can be snapped into the mounting fixing groove 17. Through this snapping method, the mold body 1 is effectively fixed, ensuring the stability of the mold during operation.

[0035] Furthermore, the mold body 1 includes a tilting mold upper block 2, a tilting mold middle block 3 and a tilting mold lower block 6, and the tilting mold upper block 2, the tilting mold middle block 3 and the tilting mold lower block 6 are arranged in sequence from top to bottom, and the transverse channel 8 is provided between the tilting mold upper block 2 and the tilting mold middle block 3. This multi-block structure has many positive technical effects. In terms of manufacturing, the multi-block structure reduces the complexity of manufacturing and improves the feasibility and efficiency of manufacturing. During use, once the relevant parts of the mold, such as around the molding channel, are worn, missing or damaged, they can be replaced for specific modules without replacing the entire mold. This not only saves costs, but also reduces maintenance time, ensures the continuity of production, and improves the overall practicality and economy of the mold.

[0036] Furthermore, the upper edge of the tilting mold middle block 3 is provided with a curved surface 4 at the location corresponding to the tilting structure cutting hole 9, and the lower surface of the tilting mold upper block 2 is shaped to conform to this curved surface 4. The curved surface 4 cooperates with the inclined portion 16 on the lower end of the tilting structure forming rod 15, and the two work together to accurately form the tilting structure that meets the design goals during the spring manufacturing process.

[0037] Furthermore, a tilting forming mounting block 5 is provided on the top of the tilting structure forming rod 15, and a tilting and cutting mounting block 14 is provided on the top of the tilting structure cutting rod 13. The tilting forming mounting block 5 and the tilting and cutting mounting block 14 can mount the tilting structure forming rod 15 and the tilting structure cutting rod 13 on the forming equipment. These two mounting blocks are connected to an actuating component such as a cylinder or an electric push rod, and the actuating component is mounted on the forming equipment. This structural design realizes the effective connection between the various components of the mold and the forming equipment, ensuring that the actuating component can accurately drive the forming rod and the cutting rod to work, thereby ensuring the smooth progress of the spring manufacturing process and improving overall work efficiency and stability.

[0038] Furthermore, the upper block 2, the middle block 3, and the lower block 6 of the tilting mold are provided with a tilting mold mounting through-hole 7. The main function of the tilting mold mounting through-hole 7 is to achieve assembly. When the mold is installed on the molding equipment, the rod of the molding equipment can pass through the through-hole, thereby conveniently achieving assembly and coordination between the various mold blocks, effectively improving the efficiency of mold installation.

[0039] Example 2:

[0040] Please refer to Figures 4 to 6A three-dimensional molding die for stretching and forming the inner ring of a spring comprises a die body 1 and a molding movable component. The die body 1 is provided with a transverse channel 8 for the steel strip to pass through and an action channel group for the molding movable component to move. The action channel group is vertically arranged and connected to the transverse channel 8. A molding structure is provided on the transverse channel 8 at a position corresponding to the action channel group. The molding movable component comprises a cutting component and a molding component.

[0041] In the three-dimensional shaping mold for the inner ring of a spring formed by stretching in this embodiment, the steel strip used as the manufacturing material itself has stress, which greatly interferes with the three-dimensional shaping of the spring. The transverse channel 8 in this mold constrains the steel strip and strictly limits its range of motion when the steel strip passes through, so that the steel strip always maintains a relatively regular state, fundamentally avoiding the curling phenomenon caused by stress. The forming component undertakes the key task of shaping the shape in the three-dimensional forming process of the spring. When the steel strip moves forward in an orderly manner along the transverse channel 8, the forming component gradually applies force to the steel strip according to the pre-set procedure or shape requirements, shaping the steel strip into a three-dimensional shape that meets the requirements. After the steel strip is shaped by the forming component, the cutting component intervenes in time to cut the steel strip with a highly accurate cutting action.

[0042] Furthermore, the forming component includes a first bending structure forming rod 26 and a second bending structure forming rod 27, the cutting component includes a bending structure cutting rod 28, and the action channel group includes a first bending structure forming channel 22, a second bending structure forming channel 23, and a bending structure cutting channel 24. The first bending structure forming rod 26 and the second bending structure forming rod 27 are respectively arranged in the first bending structure forming channel 22 and the second bending structure forming channel 23, the bending structure cutting rod 28 is arranged in the bending structure cutting channel 24, and the second bending structure forming rod 27 is located between the first bending structure forming rod 26 and the bending structure cutting rod 28. The first bending structure forming rod 26 and the second bending structure forming rod 27 are responsible for the bending operation, the second bending structure forming rod 27 is located between the two, and the bending structure cutting rod 28 is responsible for the cutting operation. The various rods cooperate with each other to achieve the three-dimensional shape of the spring bending structure. This arrangement makes the division of labor of each rod clear and cooperates to complete the specific structural forming of the spring.

[0043] Furthermore, the forming structure includes a first bending structure forming groove 19 and a second bending structure forming groove 20. The first bending structure forming groove 19 and the second bending structure forming groove 20 correspond to the positions of the first bending structure forming rod 26 and the second bending structure forming rod 27, respectively. The first bending structure forming groove 19 cooperates with the first bending structure forming rod 26, and the second bending structure forming groove 20 cooperates with the second bending structure forming rod 27. This corresponding relationship is the key to achieving the bending operation, enabling the spring to be precisely bent, thereby ensuring the accurate formation of the spring bending structure.

[0044] Furthermore, the forming structure includes a bending structure cutting hole 21, which connects to the bending structure cutting channel 24. The provision of the bending structure cutting hole 21 provides movement space for the bending structure cutting rod 28. During the spring manufacturing process, the bending structure cutting rod 28 needs to perform a cutting operation. The presence of the bending structure cutting hole 21 ensures that the cutting rod can complete the operation smoothly, ensuring the normal operation of the entire spring manufacturing process.

[0045] Furthermore, the side of the mold body 1 is provided with a mounting groove 17. The purpose of the mounting groove 17 is to mount the mold body 1 on the molding equipment. During the installation process, the molding equipment's fixing parts can be snapped into the mounting groove 17. This snap-fit ​​method ensures that the mold body 1 is stably mounted on the molding equipment, preventing mold shaking during the spring manufacturing process that could affect product quality, and providing the necessary stability for efficient and accurate spring manufacturing.

[0046] Furthermore, a discharge groove is provided on the side of the mold body 1, located above the bending structure cutting hole 21. This provides space for spring unloading, allowing the spring to be smoothly removed from the discharge groove after processing. This design optimizes the final step of the spring manufacturing process, allowing the spring to be easily removed from the mold and improving production efficiency.

[0047] Furthermore, the mold body 1 includes a plurality of blocks 25, and a bending mold mounting through-hole is provided on the mold body 1 for combining a plurality of the blocks 25. The multi-block structure is very beneficial to mold manufacturing, and the bending mold mounting through-hole can realize the combination of the blocks 25. During installation, the rods on the molding assembly pass through the bending mold mounting through-hole to complete the assembly. This structure brings many benefits. On the one hand, when a certain block 25 is worn, it can be replaced or repaired in a targeted manner without the need for overall processing, which greatly reduces maintenance costs. On the other hand, it greatly improves the convenience of maintenance, reduces maintenance time and workload, and makes maintenance work more efficient. At the same time, this design also ensures the stability and reliability of the mold as a whole, helps to improve production efficiency, and can better adapt to production needs and maintain a good working condition in the long-term spring manufacturing process.

[0048] Furthermore, the first bending structure forming groove 19, the second bending structure forming groove 20, and the bending structure cutting hole 21 are located on the same block 25. This block 25 becomes the main workbench, or core component. This arrangement centralizes related operations, facilitates precise control of the bending and cutting processes, improves operational coordination, and facilitates management and maintenance of the core work area.

[0049] Furthermore, the first bending structure forming rod 26, the second bending structure forming rod 27, and the bending structure cutting rod 28 are equipped with mounting members for mounting them on the forming equipment. The mounting members are used to accurately and securely attach the first bending structure forming rod 26, the second bending structure forming rod 27, and the bending structure cutting rod 28 to the forming equipment. They are an important means of connecting the rods to the forming equipment, ensuring the stability of each rod on the equipment, thereby ensuring that each rod can perform operations such as bending and cutting during the spring manufacturing process.

[0050] Furthermore, the mounting member includes a first mounting slider 29 and a second mounting slider 30. The first mounting slider 29 is disposed on top of the first bending structure forming rod 26, and the second mounting slider 30 is disposed on top of the second bending structure forming rod 27 and the bending structure cutting rod 28. The slider design brings significant technical benefits. This structural form greatly facilitates a convenient installation process. Compared with traditional installation methods, the slider can more smoothly dock with the forming equipment, reducing obstructions and adjustment steps during installation. This not only improves installation efficiency, but also ensures the accuracy of the installation position of each rod, thereby providing a guarantee for the accuracy of operations such as bending and cutting during the spring manufacturing process.

[0051] Example 3:

[0052] A forming device includes the mold for forming a three-dimensional spring inner ring by stretching and forming the spring inner ring according to the first or second embodiment. The forming device includes the mold for forming a three-dimensional spring inner ring by stretching and forming the spring inner ring according to the first or second embodiment, and the mold for forming a three-dimensional spring inner ring by stretching and forming the spring inner ring is mounted on the forming device. To cooperate with the mold, the forming device is equipped with an electric push rod or a cylinder to drive the mold.

[0053] The above description of the embodiments is intended to facilitate understanding and use of the present invention by those skilled in the art. It is apparent that those skilled in the art can readily make various modifications to the embodiments and apply the general principles described herein to other embodiments without requiring creative effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A three-dimensional mold for stretching and forming the inner ring of a spring, characterized in that: It includes a mold body and a forming movable component. The mold body is provided with a transverse channel for the steel strip to pass through and an action channel group for the forming movable component to move. The action channel group is vertically arranged and connected to the transverse channel. A forming structure is provided on the transverse channel at a position corresponding to the action channel group. The forming movable component includes a cutting component and a forming component.

2. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 1, characterized in that: The cutting component includes a tilting structure cutting rod, the forming component includes a tilting structure forming rod, the action channel group includes a tilting structure forming channel and a tilting structure cutting channel, the tilting structure forming rod is arranged in the tilting structure forming channel, and the tilting structure cutting rod is arranged in the tilting structure cutting channel.

3. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 2, characterized in that: The forming structure includes a tilting structure cutting hole and a tilting structure forming hole, the tilting structure cutting hole is connected to the tilting structure cutting channel, and the tilting structure forming hole is connected to the tilting structure forming channel.

4. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 2, characterized in that: The lower end surface of the tilting structure forming rod is provided with an inclined portion.

5. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 1, characterized in that: The forming component includes a first bending structure forming rod and a second bending structure forming rod, the cutting component includes a bending structure cutting rod, the action channel group includes a first bending structure forming channel, a second bending structure forming channel and a bending structure cutting channel, the first bending structure forming rod and the second bending structure forming rod are respectively arranged in the first bending structure forming channel and the second bending structure forming channel, the bending structure cutting rod is arranged in the bending structure cutting channel In the channel, the second bending structure forming rod is located between the first bending structure forming rod and the bending structure cutting rod.

6. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 5, characterized in that: The forming structure includes a first bending structure forming groove and a second bending structure forming groove, and the first bending structure forming groove and the second bending structure forming groove are respectively arranged corresponding to the positions of the first bending structure forming rod and the second bending structure forming rod.

7. The three-dimensional mold for stretching and forming the inner ring of a spring according to claim 6, characterized in that: The forming structure further includes a bending structure cutting hole, and the bending structure cutting hole is connected to the bending structure cutting channel.

8. The three-dimensional mold for forming the inner ring of a spring by stretching according to any one of claims 1 to 7, characterized in that: The side of the mold body is provided with a mounting and fixing groove.

9. A molding device, characterized in that: A three-dimensional modeling die for the inner ring of a spring formed by stretching according to any one of claims 1 to 8.

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