Spring machine and bending mechanism thereof

Abstract

This utility model relates to a spring machine and its bending mechanism. The bending mechanism includes a mounting plate, a tool telescopic assembly, a tool multi-dimensional movement assembly, and a motor B. Both the tool multi-dimensional movement assembly and the tool telescopic assembly include a support block, a sliding plate, and a connecting rod B. The sliding plate is slidably mounted on the support block. The motor B is fixed to one end of the support block, and a turntable is fixed to the shaft of the motor B. A connecting column is eccentrically mounted on the turntable. One end of the connecting rod B is rotatably connected to the connecting column, and the other end is rotatably connected to the sliding plate. A groove is also formed on the back of the support block of the tool multi-dimensional movement assembly, and a drive bearing is embedded in the groove. The motor B is also fixed at a position corresponding to the drive bearing on the mounting plate. A wheel is mounted on the motor B, and a connecting shaft is eccentrically mounted on the wheel, connecting to the drive bearing. This utility model enables rapid adjustment and stable movement of the tool in multiple directions to adapt to the efficient processing of complex springs, while improving the integration and automation level of the equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of spring production equipment, specifically relating to a spring machine and its bending mechanism. Background Technology

[0002] As an elastic element widely used in machinery, electronics, automobiles, and home appliances, the manufacturing precision and shape complexity of springs directly affect the performance and reliability of the entire equipment. Traditional spring manufacturing equipment mostly uses a fixed bending mechanism, which achieves the winding and bending of springs through the linear motion of the feeding mechanism combined with the rotational action. However, this structure often has problems such as poor adjustment flexibility and limited applicability, and it is particularly difficult to meet the processing requirements of multi-dimensional, variable curvature complex springs.

[0003] In existing technologies, spring bending mechanisms typically use a single motor to drive the cutting tool in linear or circular motion. This restricts the tool's trajectory and degrees of freedom, leading to frequent tool changes or mechanical adjustments when machining irregularly shaped springs (such as non-circular cross-sections, variable diameter springs, and spatial spirals). This results in low production efficiency and difficulty in guaranteeing accuracy. Furthermore, the extension, retraction, and multi-dimensional movement of the cutting tool in conventional bending mechanisms often rely on independent drive systems, resulting in complex structures, large space requirements, and high difficulty in coordinated control, further limiting the development of high-speed and high-precision equipment. Utility Model Content

[0004] To solve the above-mentioned technical problems, the first objective of this utility model is to provide a bending mechanism with a compact structure, flexible movement, and precise control, and the second objective of this utility model is to provide a spring machine.

[0005] To achieve the first objective of the above-mentioned utility model, the present utility model adopts the following technical solution:

[0006] A bending mechanism includes a mounting plate, a tool telescopic assembly, a tool multi-dimensional movement assembly, and a motor B. A discharge assembly is located at the center of the mounting plate. The tool telescopic assembly is fixed to the mounting plate. The tool multi-dimensional movement assembly is slidably disposed on the mounting plate and arranged around the discharge assembly. Both the tool telescopic assembly and the tool multi-dimensional movement assembly include a support block, a sliding plate, and a connecting rod B. The sliding plate is slidably disposed on the support block along its length. The motor B is fixed to one end of the support block. The shaft of the motor B... A turntable is fixed on the top, and a connecting column is eccentrically arranged on the turntable. One end of the connecting rod B is rotatably connected to the connecting column, and the other end is rotatably connected to the slide plate. A cutting head is also fixed on the slide plate of the cutting tool telescopic assembly. A cutting tool is also fixed on the slide plate of the cutting tool multi-dimensional movement assembly. A groove is also opened on the back of the support block of the cutting tool multi-dimensional movement assembly. A drive bearing is embedded in the groove. A motor B is also fixed on the mounting plate at the position corresponding to the drive bearing. A wheel is provided on the motor B. A connecting shaft is eccentrically arranged on the wheel. The connecting shaft is connected to the drive bearing.

[0007] As a preferred embodiment, the mounting plate has a notch, and a horizontal guide rail is fixed inside the notch. The back of the support block of the multi-dimensional moving component of the tool is also provided with a horizontal slider that cooperates with the horizontal guide rail.

[0008] As a preferred embodiment, a tool mounting block is provided between the tool and the slide plate, and the tool and the tool mounting block are fixed by plugging, snapping or bolting.

[0009] To achieve the second objective of the above-mentioned utility model, the present utility model adopts the following technical solution:

[0010] A spring machine includes a frame, a sliding frame, a feeding box, and a bending mechanism. The bending mechanism is as described in any of the above descriptions. The sliding frame is slidably connected to the frame. A motor A is also fixed on the frame. The feeding box is fixed on the sliding frame. The discharge assembly is located at the front end of the sliding frame and its rear end is connected to the front end of the feeding box. A mounting plate is fixed to the front end of the frame, and a through hole is provided in the middle of the mounting plate. The motor A drives the sliding frame to move, causing the discharge assembly to extend and retract within the through hole.

[0011] As a preferred embodiment, the sliding frame includes a front mounting plate, a sliding base plate, and side support plates fixed to each other. The discharge assembly is rotatably connected to the front mounting plate, and a rotary drive motor is also fixed on the front mounting plate. The rotary drive motor drives the discharge assembly to rotate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention's bending mechanism enables rapid and stable adjustment of the cutting tool in multiple directions, facilitating efficient machining of complex springs while enhancing the equipment's integration and automation level. By mounting the cutting tool telescopic assembly and the multi-dimensional cutting tool movement assembly together around the discharge assembly on the mounting plate, this invention forms a compact, modular machining unit. This layout significantly shortens the power transmission path, improves structural rigidity, and reduces vibration during machining, laying the foundation for high-precision bending.

[0014] This invention decouples the "telescopic" motion (radial feed / retraction) and "multi-dimensional movement" (such as transverse or longitudinal feeding, auxiliary forming) of the cutting tool from two independent components, thus achieving decoupling of motion functions. This allows each component to be optimized for its specific motion, resulting in clearer control logic and avoiding interference and precision loss caused by a single complex mechanism implementing multiple motions. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0016] Figure 1 and Figure 2 These are schematic diagrams of the spring mechanism of this utility model at two different angles;

[0017] Figure 3 This is a structural schematic diagram of the support plate, sliding frame, feeding box and mounting plate of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the support plate, mounting plate, and the tool telescopic assembly and tool multidimensional movement assembly on the mounting plate of the spring machine of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the mounting plate, the discharge assembly, the tool telescopic assembly, and the tool multi-dimensional movement assembly of this utility model;

[0020] Figure 6 and Figure 7 This is a schematic diagram of the multi-dimensional moving component of the cutting tool of this utility model from two different angles;

[0021] Figure 8 This is a schematic diagram of the sliding structure of the support block and mounting plate of the multi-dimensional moving component of the cutting tool of this utility model.

[0022] The reference numerals in the accompanying drawings are as follows: 1. Frame; 11. Motor A; 111. Connecting rod A; 12. Support plate; 121. Guide rail A; 122. Slider A; 2. Sliding frame; 21. Front mounting plate; 3. Feed box; 30. Discharge assembly; 300. Discharge column; 302. Rotating tube; 305. Fixing block; 306. Clamping block; 4. Horizontal guide wheel assembly; 5. Mounting plate; 501. Horizontal guide rail; 502. Horizontal slider; 51. Side plate; 6. Tool telescopic assembly; 61. Support block; 610. Groove; 611. Drive bearing; 612. Slider B; 613. Guide rail B; 62. Slide plate; 63. Connecting rod B; 64. Turntable; 65. Connecting column; 66. Tool head; 7. Tool multi-dimensional movement assembly; 71. Tool; 72. Tool mounting block; 8. Motor B; 9. Operation control assembly. Detailed Implementation

[0023] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] 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.

[0025] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., 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, and 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] like Figures 1 to 8 The spring machine shown includes a frame 1, a sliding frame 2, a feeding box 3, and a bending mechanism. The bending mechanism includes a mounting plate 5, a tool telescopic assembly 6, a tool multi-dimensional movement assembly 7, and a motor B8. A discharge assembly 30 is located in the center of the mounting plate 5. The tool telescopic assembly 6 is fixed to the mounting plate 5. The tool multi-dimensional movement assembly 7 is slidably disposed on the mounting plate 5, and the tool telescopic assembly 6 and the tool multi-dimensional movement assembly 7 are arranged around the discharge assembly 30. Both the tool multi-dimensional movement assembly 7 and the tool telescopic assembly 6 include a support block 61, a sliding plate 62, and a connecting rod B63. The sliding plate 62 is slidably disposed on the support block 61 along its length. The motor B8 is fixed to one end of the support block 61. A turntable 64 is fixed on the shaft of the motor B8. A connecting post 65 is eccentrically arranged on the turntable 64. One end of the connecting rod B63 is rotatably connected to the connecting post 65, and the other end is rotatably connected to the slide plate 62. A cutter head 66 is also fixed on the slide plate 62 of the cutter telescopic assembly 6. A cutter 71 is also movably arranged on the slide plate 62 of the cutter multidimensional moving assembly 7. A groove 610 is also opened on the back of the support block 61 of the cutter multidimensional moving assembly 7. A drive bearing 611 is embedded in the groove 610. A motor B8 is also fixed on the mounting plate 5 at a position corresponding to the drive bearing 611. A wheel is provided on the motor B8. A connecting shaft is eccentrically arranged on the wheel. The connecting shaft is connected to the drive bearing 611.

[0031] The tool telescopic assembly and the tool multi-dimensional movement assembly of this utility model both adopt a crank-slider mechanism composed of a motor B, a turntable, an eccentric connecting column, and a connecting rod B. This mechanism can efficiently convert the rotational motion of the motor into the precise linear reciprocating motion of the slide. Its advantages are as follows: 1. Controllable motion: The motor is easy to precisely rotate and control, thereby accurately controlling the stroke and position of the slide. 2. Simple and reliable structure: Compared with complex cam groups or hydraulic systems, this mechanism has fewer parts and is easier to maintain. 3. Strong power: The crank mechanism can provide a large mechanical gain, ensuring that the tool has sufficient thrust when bending wire.

[0032] The multi-dimensional moving component of the cutting tool of this utility model has dual drive. The linear motion driven by two independent motors is superimposed, which enables the cutting tool to walk on any trajectory (such as a circle, ellipse or more complex program-set trajectory) in a plane (such as the XY plane). This is the key to realizing the forming of complex two-dimensional springs (such as irregular springs and flat springs).

[0033] The sliding frame 2 is slidably connected to the frame 1. A motor A11 is also fixed on the frame 1. The feeding box 3 is fixed on the sliding frame 2. The discharge component 30 is located at the front end of the sliding frame 2 and its rear end is connected to the front end of the feeding box 3. The mounting plate 5 is fixed to the front end of the frame 1. Side plates 51 are also fixed on both sides of the mounting plate 5. A through hole is opened in the middle of the mounting plate 5. The motor A11 drives the sliding frame 2 to move, so that the discharge component 30 extends and retracts in the through hole. An operation control component 9 is also provided on one side of the frame.

[0034] This invention integrates a bending mechanism, a feeding box, and a sliding frame into one unit. Motor A drives the entire sliding frame and feeding box to move together, allowing the feeding assembly (feed nozzle) to extend and retract relative to the through-hole on the mounting plate. This movement is typically used for the "feeding" action. The bending mechanism remains stationary, and the feeding nozzle feeds forward a predetermined length of wire, which is then bent. This "feeding mechanism moves, processing mechanism remains stationary" design avoids connecting complex cables and air pipes to the moving bending mechanism, improving reliability. All modules of the machine work collaboratively, achieving automated and efficient production from feeding and bending to forming.

[0035] The mounting plate 5 has a notch, within which a horizontal guide rail 501 is fixed. The back of the support block 61 of the multi-dimensional tool movement assembly 7 is also equipped with a horizontal slider 502 that cooperates with the horizontal guide rail 501. The cooperation of the horizontal guide rail and the horizontal slider guides the overall movement of the multi-dimensional tool movement assembly, providing a high-precision linear guidance method. This structure significantly reduces friction and wobbling during movement, ensuring smooth movement and precise positioning accuracy, directly improving the dimensional consistency of the bent products.

[0036] The mounting plate 5 is further provided with inverted L-shaped limiting blocks on both sides of the recess to limit the movement of the support block 61. The inverted L-shaped limiting blocks serve as hard limits, preventing the support block from detaching from the guide rail or colliding with it in case of accidents (such as program errors or drive failures), protecting the expensive precision guide rail and slider, improving the safety and reliability of the equipment, and reducing downtime for maintenance.

[0037] A tool mounting block 72 is also provided between the tool 71 and the slide plate 62. The tool 71 and the tool mounting block 72 are fixed by plugging, snapping, or bolting. The above structure realizes the modularization of the tool. Operators do not need to debug the entire moving parts. They can simply replace the pre-calibrated tool module to adapt to the production of springs with different wire diameters or shapes, which greatly reduces downtime when changing products and improves production flexibility.

[0038] A support plate 12 is fixed to the upper part of the frame 1. The sliding frame 2 is slidably mounted on the support plate 12. A motor A11 is also fixed to the lower part of the support plate 12. The rotating shaft of the motor A11 passes through the support plate 12, and a disc is fixed on the rotating shaft. A protruding post A is eccentrically mounted on the disc. A protruding post B is also provided at the bottom of the sliding frame 2. A connecting rod A111 is provided between the protruding post A and the protruding post B. The two ends of the connecting rod 11 are rotatably connected to the protruding post A and the protruding post B, respectively.

[0039] The sliding frame 2 includes a front mounting plate 21, a sliding base plate, and side support plates fixed to each other. The discharge assembly 30 is rotatably connected to the front mounting plate 21. A rotary drive motor is also fixed on the front mounting plate 21, and the rotary drive motor drives the discharge assembly 30 to rotate. The specific structure is as follows: The discharge assembly 30 includes a discharge column 300 and a rotating tube 302. A rotating gear disk is fixed to one end of the rotating tube 302. The discharge column 300 is located at the other end of the rotating tube 302 and is surrounded and fastened by two semi-circular clamping blocks 306. A fixing block 305 is sleeved on the outside of the rotating tube 302 through a bearing. The fixing block 305 is fixed to the front mounting plate 21.

[0040] The above structure adds a rotating shaft to achieve helical spring processing. While the feeding nozzle rotates at a constant speed, the sliding frame feeds the spring at a constant speed, and the cutter performs radial or axial pitch control. The cooperation of these three elements allows for the winding of precise helical springs. This structure improves the functionality of the spring machine, making it a truly versatile piece of equipment capable of producing various common and irregularly shaped springs.

[0041] A guide rail A121 is fixed on the support plate 12, and a slider A122 is provided at the bottom of the sliding base plate 22. The sliding frame 2 is slidably connected to the machine frame through the cooperation of the guide rail A121 and the slider A122. A crossbeam is also fixed between the side support plates on both sides. The crossbeam is located at the rear end of the feeding box 3. A vertical guide wheel assembly is fixed on the crossbeam, and a horizontal guide wheel assembly 4 is fixed at the rear end of the vertical guide wheel assembly.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A bending mechanism, characterized in that: The assembly includes a mounting plate (5), a tool telescopic assembly (6), a tool multi-dimensional moving assembly (7), and a motor B (8). The mounting plate (5) has a discharge assembly (30) in its center. The tool telescopic assembly (6) is fixed to the mounting plate (5). The tool multi-dimensional moving assembly (7) is slidably mounted on the mounting plate (5), and the tool telescopic assembly (6) and the tool multi-dimensional moving assembly (7) are arranged around the discharge assembly (30). Both the tool multi-dimensional moving assembly (7) and the tool telescopic assembly (6) include a support block (61), a sliding plate (62), and a connecting rod B (63). The sliding plate (62) is slidably mounted on the support block (61) along its length. The motor B (8) is fixed to one end of the support block (61), and a turntable is fixed to the shaft of the motor B (8). 64), the turntable (64) is eccentrically provided with a connecting column (65), one end of the connecting rod B (63) is rotatably connected to the connecting column (65), and the other end is rotatably connected to the slide plate (62); the slide plate (62) of the tool telescopic assembly (6) is also fixed with a tool head (66); the slide plate (62) of the tool multidimensional moving assembly (7) is also fixed with a tool (71), the back of the support block (61) of the tool multidimensional moving assembly (7) is also provided with a groove (610), the groove (610) is embedded with a drive bearing (611), the mounting plate (5) is also fixed with a motor B (8) at the position corresponding to the drive bearing (611), the motor B (8) is provided with a wheel, the wheel is eccentrically provided with a connecting shaft, and the connecting shaft is connected to the drive bearing (611).

2. The bending mechanism according to claim 1, characterized in that, The mounting plate (5) has a notch, and a horizontal guide rail (501) is fixed inside the notch. The back of the support block (61) of the multi-dimensional moving tool assembly (7) is also provided with a horizontal slider (502) that cooperates with the horizontal guide rail (501).

3. A bending mechanism according to claim 1, characterized in that, A tool mounting block (72) is also provided between the tool (71) and the slide plate (62), and the tool (71) and the tool mounting block (72) are fixed by plugging, snapping or bolting.

4. A spring mechanism, characterized in that, The device includes a frame (1), a sliding frame (2), a feeding box (3), and a bending mechanism as described in any one of claims 1 to 3. The sliding frame (2) is slidably connected to the frame (1). A motor A (11) is also fixed on the frame (1). The feeding box (3) is fixed on the sliding frame (2). The discharge assembly (30) is located at the front end of the sliding frame (2) and its rear end is connected to the front end of the feeding box (3). The mounting plate (5) is fixed at the front end of the frame (1) and a through hole is provided in the middle of the mounting plate (5). The motor A (11) drives the sliding frame (2) to move, so that the discharge assembly (30) extends and retracts within the through hole.

5. A spring machine according to claim 4, characterized in that, The sliding frame (2) includes a front mounting plate (21), a sliding base plate, and side support plates on both sides that are fixed to each other. The discharge assembly (30) is rotatably connected to the front mounting plate (21). A rotary drive motor is also fixed on the front mounting plate (21), and the rotary drive motor drives the discharge assembly (30) to rotate.

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