Automatic loading and unloading type roll pressing spring machine

Abstract

The utility model relates to spring processing equipment technical field, especially a kind of coiled spring machine of automatic feeding and discharging, including rack, cutting mechanism, support, carousel and auxiliary guide mechanism, straightening push mechanism is set on rack;Cutting mechanism is set on rack;Support is set on rack, movable plate is slidably arranged on support, and lift driving part that drives movable plate to ascend or descend is set on support;Carousel is rotationally arranged on movable plate, coaxially set center shaft and clamping mechanism on carousel, positioning block is set on center shaft;Auxiliary guide mechanism is set on rack.The utility model is designed by the cooperation of straightening push mechanism and carousel, realizes that wire rod is from initial active push, after touching positioning block, automatically switch for the winding mode of wire rod that carousel rotates passive traction, and using the structure of center shaft open end downward, so that the forming spring can rely on gravity and automatically drop after clamping loosening, to complete the full-automatic feeding and discharging and high-quality winding.

Description

Technical Field

[0001] This utility model relates to the field of spring processing equipment technology, and in particular to a spring coiling machine with automatic loading and unloading capabilities. Background Technology

[0002] In the field of mechanical manufacturing, a spring coiling machine is a specialized piece of equipment used to wind wire into helical springs. Traditional spring coiling machines typically require manual loading and unloading operations, where workers manually fix the ends of the wire onto the winding shaft and remove it after the spring is formed. This method is not only inefficient and labor-intensive but also poses certain safety risks. Furthermore, ensuring a continuous and stable feed of the wire and precisely controlling the number of coils and length of the spring during the winding process are crucial to the quality of the spring.

[0003] Existing equipment often employs a single active pushing mode when straightening and pushing wire. At the start of winding, the feeding mechanism forcibly pushes the wire towards the rotating winding shaft. When the wire end contacts the winding shaft, it is prone to bending, slippage, or inaccurate positioning, leading to instability in the initial winding stage and affecting the initial coil quality of the spring. Furthermore, unloading the formed springs often requires robotic arms or manual intervention, increasing equipment complexity and cost.

[0004] Therefore, the industry needs a high-efficiency, high-precision spring coiling machine that can achieve fully automatic loading and unloading, smooth switching between feeding and winding actions, and automatic unloading. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an automatic loading and unloading spring compression machine.

[0006] The technical solution of this utility model is: a coiling spring machine with automatic loading and unloading, including a frame, and a straightening and pushing mechanism is provided on the bottom surface of the support platform of the frame to straighten the wire and push it to the processing station. The cutting mechanism is mounted on the frame to cut the straightened wire to a fixed length using the cutting structure. The bracket is set on the frame and located on one side of the cutting mechanism's principle straightening and pushing mechanism. The bracket is equipped with a movable plate that slides along its height direction, and the bracket is also equipped with a lifting drive component that drives the movable plate to rise or fall. A turntable is mounted on a movable plate. A rotary drive is mounted on the movable plate to drive the turntable to rotate. A central shaft is coaxially mounted on the turntable. A positioning block is mounted on the central shaft. A clamping mechanism that works with the central shaft to clamp the end of the wire is mounted on the turntable. And an auxiliary guiding mechanism, which is mounted on the frame and guides the wires during operation.

[0007] Preferably, the straightening and pushing mechanism includes guide wheels A, drive assembly A, slider, guide wheels B, and drive assembly B. Multiple guide wheels A are spaced apart along the length of the frame on the bottom surface of the frame. Drive assembly A is mounted on the frame and drives each guide wheel A to rotate synchronously and in the same direction during operation. The slider is mounted on the frame, and multiple guide wheels B are spaced apart along the length of the slider. Guide wheels A and B are staggered. Drive assembly B is mounted on the frame and drives the slider to slide along the width of the frame during operation.

[0008] Preferably, guide wheels A include two, and a splined shaft is coaxially mounted on guide wheels A, with the splined shaft rotatably connected to the frame.

[0009] Preferably, the drive assembly A includes gear A, gear B, and servo motor A. The number of gears A is the same as the number of guide wheels A. Each gear A is coaxially connected to a spline shaft on the corresponding side. A drive shaft is rotatably mounted on the frame between two gears A. A ratchet is coaxially mounted on the drive shaft. Gear B is coaxially connected to the drive shaft and meshes with both gears A. Gear B has a circular groove and a sliding groove communicating with the circular groove. The ratchet is located in the circular groove and slides against its inner wall. A spring rod is mounted in the sliding groove. The movable end of the spring rod is connected to a ratchet tooth that meshes with the ratchet in one direction. The body of servo motor A is mounted on the frame. The output end of servo motor A is connected to the drive shaft through a coupling.

[0010] Preferably, the cutting mechanism includes a knife holder, a cutter, a servo electric cylinder A, and a length measuring component. The knife holder is mounted on the frame, the cutter is slidably mounted on the frame, the wire passes between the knife holder and the cutter, the servo electric cylinder A is mounted on the frame and drives the cutter away from or towards the knife holder; the length measuring component is mounted on the knife holder to measure the conveying length of the wire.

[0011] Preferably, the central shaft and the turntable are detachably connected.

[0012] Preferably, a buffer guide assembly is provided on the frame to flexibly support the finished springs.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: Through the coordinated operation of the straightening and pushing mechanism, the cutting mechanism, the turntable, and the clamping mechanism, the entire process from wire feeding, straightening, and fixed-length cutting to automatic winding and automatic dropping of the formed spring is fully automated, greatly improving production efficiency and reducing labor costs and operational risks. In the initial stage, the straightening and pushing mechanism actively pushes the wire so that its end accurately contacts the positioning block on the turntable and is clamped, ensuring the accuracy of the winding start position. Subsequently, through the unidirectional transmission characteristics of the ratchet and ratchet mechanism, the system automatically switches to active traction of the wire by the rotation of the turntable, and the straightening and pushing mechanism rotates passively accordingly. This mode avoids the bending and slippage of the wire in the initial stage, making the winding process smooth and stable, effectively improving the forming quality of the spring, especially the regularity of the first turn. Since the central shaft adopts an open-end downward design, once the pressure plate of the clamping mechanism is released, the formed spring can automatically drop under the action of gravity, without the need for a complex ejection mechanism or robotic arm gripping, simplifying the equipment structure and improving the feeding speed and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the connection structure of the various components on the frame; Figure 3 This is a structural diagram of the school's direct delivery mechanism; Figure 4 This is a schematic diagram of the measurement component. Figure 5 This is a schematic diagram of the connection structure of the various components on the movable plate.

[0015] Reference numerals: 1. Frame; 2. Guide wheel A; 3. Gear A; 4. Drive shaft; 5. Ratchet; 6. Gear B; 7. Ratchet tooth; 8. Servo motor A; 9. Slider; 10. Guide wheel B; 11. Lead screw; 12. Worm gear; 13. Worm; 14. Tool holder; 15. Cutting knife; 16. Servo electric cylinder A; 17. Measuring wheel; 18. Rotary encoder; 19. Support; 20. Movable plate; 21. Servo electric cylinder B; 22. Turntable; 23. Servo motor B; 24. Central shaft; 25. Positioning block; 26. Pressure plate; 27. Servo electric cylinder C; 28. Carriage; 29. ​​Linear module; 30. Guide wheel C; 31. Guide hopper; 32. Shock absorber; 33. Buffer plate. Detailed Implementation

[0016] Example 1, as Figures 1-5As shown, this utility model proposes an automatic loading and unloading spring coiling machine, including a frame 1, a cutting mechanism, a support 19, a turntable 22, and an auxiliary guiding mechanism. A straightening and pushing mechanism is provided on the bottom surface of the support platform of the frame 1 to straighten the wire and push it to the processing station. The straightening and pushing mechanism includes guide wheels A2, a drive assembly A, a slider 9, guide wheels B10, and a drive assembly B. Multiple guide wheels A2 are spaced along the length of the frame 1 on its bottom surface. Two guide wheels A2 are included. A splined shaft is coaxially mounted on each guide wheel A2, and the splined shaft is rotatably connected to the frame 1. Drive assembly A includes gears A3 and B6, and a servo motor A8. The number of gears A3 is the same as the number of guide wheels A2. Each gear A3 is coaxially connected to a spline shaft on its corresponding side. A transmission shaft 4 is rotatably mounted on the frame 1 between the two gears A3. A ratchet 5 is coaxially mounted on the transmission shaft 4. Gear B6 is coaxially connected to the transmission shaft 4 and meshes with both gears A3. Gear B6 has a circular groove and a sliding groove communicating with the circular groove. The ratchet 5 is located in the circular groove and slides against its inner wall. A spring rod is mounted in the sliding groove. The movable end of the spring rod is connected to a ratchet tooth 7 that meshes unidirectionally with the ratchet 5. The body of the servo motor A8 is mounted on the frame 1. The output end of the servo motor A8 is connected to the transmission shaft 4 via a coupling. When in operation, drive assembly A drives each guide wheel A2 to rotate synchronously and in the same direction to push the lead screw to the coiling station. A slider 9 is mounted on the frame 1. Multiple guide wheels B10 are spaced along the length of the slider 9. The guide wheels A2 and guide wheels B10 are staggered. The drive assembly B includes, but is not limited to, a lead screw 11, a worm gear 12, and a worm 13. The lead screw 11 is rotatably mounted on the frame 1. The lead screw sleeve on the lead screw 11 is connected to the slider 9. The exposed section of the lead screw 11 is covered with a lead screw protective sleeve. Several guide rods parallel to the lead screw are provided on the frame 1. The guide rods pass through the slider 9 and are slidably connected to it. A protective cover is provided on the frame 1. The worm gear 12 and the worm 13 are both located inside the protective cover and are rotatably connected to it. The worm gear 12 is coaxially connected to the lead screw 11 and meshes with the worm 13. A crank is provided at the end of the worm 13 that extends out of the protective cover. In the working state, the drive assembly B drives the slider 9 to slide along the width direction of the frame 1.

[0017] The cutting mechanism is mounted on the frame 1 and includes a blade holder 14, a cutter 15, a servo electric cylinder A16, and a length measuring component. The blade holder 14 is mounted on the frame 1, and the cutter 15 is slidably mounted on the frame 1. The wire passes between the blade holder 14 and the cutter 15. The servo electric cylinder A16 is mounted on the frame 1 and drives the cutter 15 to move away from or towards the blade holder 14. The length measuring component includes, but is not limited to, a measuring wheel 17 and a rotary encoder 18. The blade holder 14 has a slot, and a mounting shaft rotatably connected to the blade holder 14 is located in the slot. The measuring wheel 17 is coaxially connected to the mounting shaft, and an anti-slip pad is provided on the outer arc surface of the measuring wheel 17. The rotary encoder 18 is mounted on the blade holder 14, and its input end is connected to the mounting shaft. A PLC controller electrically connected to the rotary encoder 18 is mounted on the frame 1 to cut the straightened wire to a fixed length using the cutting structure.

[0018] The bracket 19 is mounted on the frame 1 and located on one side of the cutting mechanism's principle straightening and pushing mechanism. The bracket 19 is equipped with a movable plate 20 that slides along its height direction, and the bracket 19 is equipped with a lifting drive component that drives the movable plate 20 to rise or fall. The lifting drive component includes, but is not limited to, a servo electric cylinder B21. The body of the servo electric cylinder B21 is mounted on the bracket 19, and the output end of the servo electric cylinder B21 is connected to the movable plate 20.

[0019] A turntable 22 is rotatably mounted on a movable plate 20. A rotary drive component, including but not limited to a servo motor B23, is mounted on the movable plate 20. The output end of the servo motor B23 is connected to the mounting shaft of the turntable 22 via a coupling. A central shaft 24 is coaxially mounted on the turntable 22 and is detachably connected to the turntable 22. The connection method is, but not limited to, bolt connection. A positioning block 25 is mounted on the central shaft 24. A clamping mechanism, which works in conjunction with the central shaft 24 to clamp the wire end, is mounted on the turntable 22. The clamping mechanism includes, but is not limited to, a pressure plate 26 and a servo electric cylinder C27. A guide groove perpendicular to the turntable 22 is provided, aligned with the positioning block 25. The pressure plate 26 is located within the guide groove and slidably connected to its inner wall. The body of the servo electric cylinder C27 is mounted on the turntable 22, and its output end is connected to the pressure plate 26.

[0020] An auxiliary guiding mechanism is mounted on the frame 1. The auxiliary guiding mechanism includes a slide 28 and a linear module 29. The slide 28 is slidably mounted on the frame 1, and a guide wheel C30 is rotatably mounted on the slide 28. The body of the linear module 29 is mounted on the frame 1, and the output end of the linear module 29 is connected to the slide 28. The linear module 29 drives the slide 28 to slide along the length direction of the frame 1, and the auxiliary guiding mechanism guides the wire in the working state.

[0021] In this embodiment, the wire is first supplied from the outside into the straightening and pushing mechanism. The straightening and pushing mechanism is located on the bottom surface of the support platform of the frame 1 and includes guide wheels A2, drive assembly A, slider 9, guide wheels B10, and drive assembly B. The worm gear 13 is manually or electrically driven by a crank, thereby adjusting the slider 9 to slide along the width direction of the frame 1, causing guide wheels B10 and A2 to be staggered. The servo motor A8 drives the transmission shaft 4 to rotate, which in turn drives all guide wheels A2 to rotate synchronously in the same direction through gear transmission, thereby actively pushing the wire forward to straighten it. In the initial stage, the straightening and pushing mechanism actively pushes the wire, causing it to move along the length direction of the frame 1 towards the coiling station.

[0022] After being straightened, the wire enters the cutting mechanism, passing between the blade holder 14 and the cutter 15. The length measuring component includes a measuring wheel 17 and a rotary encoder 18. As the wire moves, the measuring wheel 17 rotates, and the rotary encoder 18 records the wire length signal and sends it to the PLC controller. When the wire reaches the preset length, the PLC controller controls the servo electric cylinder A16 to drive the cutter 15 closer to the blade holder 14, cutting the wire.

[0023] The cut wire continues to be pushed to the turntable 22 area. Initially, the straightening and pushing mechanism actively pushes the wire until the end of the wire abuts against the positioning block 25. At this time, the servo electric cylinder C27 drives the pressure plate 26 to approach the central shaft 24, clamping the wire end between the positioning block 25 and the pressure plate 26. Once the wire is clamped, the turntable 22 begins to rotate driven by the servo motor B23, and the straightening and pushing mechanism switches its working mode. In the drive assembly A, the one-way meshing mechanism of the ratchet 5 and ratchet 7 allows the turntable 22 to actively pull the wire, while the guide wheel A2 rotates passively under the action of the ratchet and no longer actively pushes. When the turntable 22 rotates, the wire winds around the central shaft 24 to form a spring coil. The auxiliary guiding mechanism includes a carriage 28 and a linear module 29. The carriage 28 is equipped with a guide wheel C30, and the linear module 29 drives the carriage 28 to slide along the length of the frame 1 to guide the wire and ensure the stability of the winding process.

[0024] When the spring reaches the required size, the cutting mechanism activates again to cut the wire. The formed spring is located on the central shaft 24. Since the open end of the central shaft 24 faces downwards, when the servo electric cylinder C27 drives the pressure plate 26 to release, the spring falls directly from the central shaft 24 under gravity, completing the automatic unloading. Throughout the process, the PLC controller coordinates the actions of each mechanism to achieve automatic loading and unloading and continuous production.

[0025] In summary, this spring coiling machine, through the coordinated operation of the straightening and pushing mechanism, the cutting mechanism, the turntable 22, and the auxiliary guiding mechanism, achieves automatic straightening, pushing, winding, cutting, and unloading of wire, thereby improving production efficiency and spring quality.

[0026] Example 2, as Figure 1 As shown, the present invention proposes an automatic loading and unloading spring compression machine. Compared with Embodiment 1, the frame 1 is equipped with a buffer guide assembly, which includes a guide hopper 31 and a buffer plate 33. The guide hopper 31 is set on the frame 1 and located directly below the central shaft 24. The bottom surface of the guide hopper 31 is equipped with a vertically upward shock absorber 32. The shock absorber 32 adopts, but is not limited to, conventional spring damping shock absorption. The buffer plate 33 is set inside the guide hopper 31 and slides along its height direction. The buffer plate 33 is connected to the movable end of the shock absorber 32 so as to flexibly support the finished spring through the buffer guide assembly.

[0027] In this embodiment, the formed spring falls onto the buffer plate 33. At this time, the spring damping shock absorption plays an effective role in buffering and absorbing energy on the buffer plate 33, preventing the spring from falling directly to the ground and causing unnecessary trouble.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A spring coiling machine with automatic loading and unloading, characterized in that, include: The frame (1) is provided with a straightening and pushing mechanism on the bottom surface of the support platform of the frame (1) so as to straighten the wire and push it to the processing station through the straightening and pushing mechanism; The cutting mechanism is set on the frame (1) to cut the straightened wire to a fixed length through the cutting structure; The bracket (19) is set on the frame (1) and located on one side of the cutting mechanism principle straightening and pushing mechanism. The bracket (19) is provided with a movable plate (20) that slides along its height direction, and the bracket (19) is provided with a lifting drive component that drives the movable plate (20) to rise or fall. Turntable (22) is rotatably mounted on movable plate (20). Movable plate (20) is provided with a rotary drive component that drives the turntable (22) to rotate. A central shaft (24) is coaxially mounted on the turntable (22). A positioning block (25) is mounted on the central shaft (24). A clamping mechanism that cooperates with the central shaft (24) to clamp the end of the wire is provided on the turntable (22). And an auxiliary guiding mechanism, which is set on the frame (1) and guides the wire in the working state.

2. The automatic loading and unloading spring compression spring machine according to claim 1, characterized in that, The straightening and pushing mechanism includes guide wheel A (2), drive component A, slider (9), guide wheel B (10) and drive component B. The guide wheel A (2) includes multiple guide wheels and is spaced apart on the bottom surface of the frame (1) along the length direction of the frame (1). The drive component A is set on the frame (1) and drives each guide wheel A (2) to rotate synchronously and in the same direction when in operation. The slider (9) is set on the frame (1). The guide wheel B (10) includes multiple guide wheels and is spaced apart on the slider (9) along the length direction of the slider (9). The guide wheels A (2) and guide wheels B (10) are staggered. The drive component B is set on the frame (1) and drives the slider (9) to slide along the width direction of the frame (1) when in operation.

3. The automatic loading and unloading spring compression spring machine according to claim 2, characterized in that, The guide wheel A (2) includes two, and a spline shaft is coaxially mounted on the guide wheel A (2). The spline shaft is rotatably connected to the frame (1).

4. The automatic loading and unloading spring compression spring machine according to claim 3, characterized in that, The drive assembly A includes gear A (3), gear B (6) and servo motor A (8). The number of gears A (3) is the same as the number of guide wheels A (2). Each gear A (3) is coaxially connected to the spline shaft on the corresponding side. A transmission shaft (4) is rotatably set between the two gears A (3) on the frame (1). A ratchet (5) is coaxially set on the transmission shaft (4). Gear B (6) is coaxially connected to the transmission shaft (4) and meshes with both gears A (3). A circular groove and a sliding groove connected to the circular groove are set on gear B (6). The ratchet (5) is located in the circular groove and slides against its inner wall. A spring rod is set in the sliding groove. The movable end of the spring rod is connected to a ratchet tooth (7) that meshes with the ratchet (5) in one direction. The body of the servo motor A (8) is set on the frame (1). The output end of the servo motor A (8) is connected to the transmission shaft (4) through a coupling.

5. The automatic loading and unloading spring compression spring machine according to claim 1, characterized in that, The cutting mechanism includes a knife holder (14), a cutter (15), a servo electric cylinder A (16), and a length measuring component. The knife holder (14) is mounted on the frame (1), and the cutter (15) is slidably mounted on the frame (1). The wire passes between the knife holder (14) and the cutter (15). The servo electric cylinder A (16) is mounted on the frame (1) and drives the cutter (15) away from or near the knife holder (14). The length measuring component is mounted on the knife holder (14) to measure the conveying length of the wire.

6. The automatic loading and unloading spring compression spring machine according to claim 1, characterized in that, The central shaft (24) is detachably connected to the turntable (22).

7. The automatic loading and unloading spring compression spring machine according to claim 1, characterized in that, A buffer guide assembly is installed on the frame (1) to flexibly support the finished spring.

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