Long spring vertical setting machine

Abstract

This utility model relates to the field of spring manufacturing equipment technology, specifically a long spring standing machine, including a rotating frame and a compression spring device. The bottom of the rotating frame is equipped with a drive motor and a reduction gear. The reduction gear meshes with a transmission gear ring on the side of the frame to achieve rotation of the rotating frame. Multiple fixed spring columns are evenly distributed on the top of the rotating frame. The compression spring device is located on one side and can be multiple in number, including a lifting frame, a motor frame, a lifting motor, a ball screw, and a pneumatic pump. The lifting motor drives the ball screw, causing the motor frame and pneumatic pump to move up and down. The compression spring tube at the end of the pneumatic telescopic rod is vertically aligned with the fixed spring column. A compression ring is installed inside the compression spring tube. A limiting tube is installed at the bottom of the fixed spring column to ensure stable spring compression. The bottom of the lifting frame is slidably mounted on a slide rail via a slider, and horizontal adjustment is achieved by a screw threaded rod driven by a rotating motor. This equipment has precise positioning, strong adaptability, and effectively improves the efficiency and quality of spring standing.

Description

Technical Field

[0001] This utility model relates to the field of spring manufacturing equipment technology, specifically a long spring erecting machine. Background Technology

[0002] Traditional spring fixing processes often employ manual labor or single-station hydraulic / pneumatic presses. Operators insert the spring into the spring holder, manually tighten and hold the pressure before removing it. This process is labor-intensive, inefficient, and difficult to standardize the tightening force and holding time, resulting in poor product consistency and a high scrap rate.

[0003] Existing automated spring-setting equipment is mostly of a linear reciprocating structure, which can only process one spring at a time, resulting in long cycle times and limited production capacity. While some rotary equipment offers multi-station functionality, the spring compression device is fixed and cannot be adjusted, making it difficult to adapt to springs of different lengths or installation positions. The pressure head lifting mechanism often uses ordinary lead screws or cylinders for direct drive, leading to problems such as unstable lifting, low positioning accuracy, and inaccurate pressure control, which can easily cause spring misalignment, deformation, or damage.

[0004] Furthermore, the fixed spring column lacks a limiting structure, making the spring prone to lateral displacement during compression; the pressure head end lacks a guide or pressing component, resulting in uneven force distribution and affecting the stabilizing effect. The equipment typically lacks a leveling function, requiring manual adjustment of the spring device position when changing products, which is time-consuming, labor-intensive, and inconvenient for rapid product changeover. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a long spring standing machine.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A long spring standing machine of this utility model includes a rotating frame and a compression spring device. The bottom of the rotating frame is provided with a drive device and a frame base. The rotating frame is mounted on the frame base through bearings. The drive device drives the rotating frame to rotate. A plurality of fixed spring columns are arranged around the top of the rotating frame. The compression spring device is arranged on one side of the rotating frame. The compression spring device includes a lifting frame, a motor frame, a lifting device, and a pneumatic pump. The motor frame is slidably mounted on the lifting frame through the lifting device. The pneumatic pump is fixedly mounted on the motor frame. The output end of the pneumatic pump is provided with a pneumatic telescopic rod. The bottom end of the pneumatic telescopic rod is provided with a compression spring tube, and the compression spring tube is perpendicular to the fixed spring column.

[0007] Preferably, the driving device includes a drive motor and a reduction gear, and a transmission gear ring is provided on the bottom side of the rotating frame. The reduction gear is installed at the output end of the drive motor and meshes with the transmission gear ring.

[0008] More preferably, the lifting device includes a lifting motor and a ball screw. The lifting frame is provided with a track groove, the ball screw is rotatably installed in the track groove, the lifting motor is fixedly installed on the top of the lifting frame, the output end of the lifting motor is connected to the ball screw, and the rear side of the motor frame is slidably fitted onto the ball screw through a bushing.

[0009] Preferably, the bottom of the fixed spring post is provided with a limiting tube, and the inside of the compression spring tube is provided with a pressure ring.

[0010] Preferably, the bottom of the lifting frame is provided with a slide rail, the slide rail is provided with a track groove, and the lifting frame is slidably mounted on the slide rail by a sliding device.

[0011] More preferably, the sliding device includes a threaded screw and a rotary motor. The slide rail is provided with an adjustment groove. The threaded screw is rotatably installed in the adjustment groove. The rotary motor is fixedly installed at one end of the slide rail, and the output end of the rotary motor is connected to the threaded screw. The bottom of the lifting frame is slidably mounted on the slide rail and the threaded screw by a slider.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a long spring standing machine, which has the following beneficial effects: The drive motor drives the reduction gear to mesh with the transmission gear ring at the bottom of the rotating frame, achieving precise rotation of the frame and aligning each fixed spring post with the compression spring device in sequence, thus completing multi-station continuous operation. The compression spring device uses a lifting motor to drive the ball screw, which in turn drives the motor frame and pneumatic pump to rise and fall smoothly. Together with the pneumatic telescopic rod and compression spring tube, it achieves stable compression of the spring.

[0013] The compression spring tube has a pressure ring inside, and the bottom of the fixed spring column has a limiting tube to effectively prevent the spring from shifting or deforming, ensuring the consistency and quality of the standing process. The lifting frame is slidably mounted on the slide rail via a slider, and a rotating motor drives the threaded screw to achieve precise horizontal adjustment of the entire compression spring device, adapting to the processing needs of springs of different specifications.

[0014] With a reasonable overall structure, smooth movement, and precise control, it can realize automatic feeding, rotation positioning, clamping and unloading of springs, significantly improving production efficiency and product qualification rate. It is suitable for mass production of springs after heat treatment and has good industrial application value. Attached Figure Description

[0015] Figure 1 This is a top view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3This is a schematic diagram of the cross-sectional structure of the compression spring tube of this utility model; In the diagram: 1. Rotating frame; 2. Lifting frame; 3. Fixed spring column; 4. Limit tube; 5. Ball screw; 6. Motor frame; 7. Lifting motor; 8. Pneumatic pump; 9. Pneumatic telescopic rod; 10. Compression spring tube; 11. Drive motor; 12. Reduction gear; 13. Transmission gear ring; 14. Frame base; 15. Slide rail; 16. Threaded screw; 17. Rotating motor; 18. Pressure ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model discloses a long spring standing machine, including a rotating frame 1 and a compression spring device. The bottom of the rotating frame 1 is provided with a drive device and a frame base 14. The rotating frame 1 is mounted on the frame base 14 through bearings. The drive device drives the rotating frame 1 to rotate. The top of the rotating frame 1 is surrounded by a plurality of fixed spring columns 3. The compression spring device is located on one side of the rotating frame 1. The compression spring device includes a lifting frame 2, a motor frame 6, a lifting device, and a pneumatic pump 8. The motor frame 6 is slidably mounted on the lifting frame 2 through the lifting device. The pneumatic pump 8 is fixedly mounted on the motor frame 6. The output end of the pneumatic pump 8 is provided with a pneumatic telescopic rod 9. The bottom end of the pneumatic telescopic rod 9 is provided with a compression spring tube 10, and the compression spring tube 10 is perpendicular to the fixed spring columns 3.

[0018] This technical solution achieves multi-station cyclic operation through a drive device, and the compression spring device completes the vertical fixing of the long spring. The two work together to solve the problems of low efficiency and poor compression accuracy of traditional vertical fixing machines in a single station. The working principle of each core component is as follows: The rotating frame 1 achieves the switching of multiple long springs through rotation, and works in conjunction with the fixed spring column 3 to position the springs, enabling continuous operation of clamping, standing, and picking up parts, thereby improving processing efficiency.

[0019] The rotating frame 1 adopts a circular steel structure, with its bottom rotatably connected to the frame base 14 via bearings, and 6-8 fixed spring columns 3 arranged around its top. The drive unit drives the rotating frame 1 to rotate at a constant speed around the central axis of the frame base 14. Each fixed spring column 3 corresponds to a station, such as a clamping station, a standing station, or a part removal station. When the spring part of a station is standing, the rotating frame 1 drives the next fixed spring column 3 to move to the bottom of the compression spring device to achieve continuous operation. The fixed spring post 3 is a cylindrical structure, and the long spring is vertically sleeved on the outside of the fixed spring post 3. The fixed spring post 3 restricts the radial displacement of the spring and ensures that the spring axis is coaxial with the compression spring tube 10 when the compression spring device is compressed. The limiting tube 4 at the bottom of the fixed spring post 3 can limit the position of the bottom of the spring, prevent the spring from moving down too much when clamped, and prevent the bottom of the spring from deforming during compression.

[0020] The compression spring device uses lifting adjustment and pneumatic drive to drive the compression spring tube 10 to apply pressure to the long spring on the fixed spring column 3, thereby realizing the plastic deformation and fixing of the spring and eliminating residual stress.

[0021] The compression spring device is arranged radially along the rotating frame 1, and adapts to springs of different heights and positions through lifting and horizontal movement: Lifting adjustment: The lifting device drive motor 11 frame 6 moves vertically along the lifting frame 2 to adjust the height of the compression spring tube 10, ensuring that the compression spring tube 10 can be inserted from the top of the spring and apply pressure; After the pneumatic pump 8 is started, it drives the pneumatic telescopic rod 9 to extend downwards. The compression spring tube 10 moves down synchronously with the telescopic rod. The compression ring 18 inside the compression spring tube 10 contacts the top of the spring. The spring is compressed and deformed by the air pressure. After maintaining the position for 30 seconds to 1 minute, it is ready to stand still. Air pump 8, such as the Japanese SR series - SR10020C-A2, is equipped with a pressure regulating valve, which can set different pressures according to the spring material to avoid excessive pressure causing spring breakage or insufficient pressure causing incomplete standing.

[0022] The drive unit provides stable rotational power to the rotating frame 1 and achieves precise speed control through gear transmission to ensure accurate workstation switching.

[0023] The drive unit consists of a drive motor 11, such as a servo motor, and a reduction gear 12. The transmission gear ring 13 on the bottom side of the rotating frame 1 meshes with the reduction gear 12. After the drive motor 11 starts, the reduction gear 12 drives the transmission gear ring 13 to rotate, which in turn drives the rotating frame 1 to rotate around the central axis; Servo motors are typically controlled by a PLC programmer to achieve uniform or intermittent rotation of the rotating frame 1, such as stopping at each station for 30 seconds to 1 minute, completing the stationary position, and then switching back to the starting position, adapting to different stationary position time requirements. In actual use, the drive motor 11 can be equipped with an encoder, such as Omron E6B2-CWZ6C, which can provide real-time feedback on the rotation angle. When the rotating frame 1 moves the fixed spring column 3 to directly below the compression spring device, the encoder sends a signal to the control system, and the drive motor 11 stops, ensuring the positioning accuracy of the workstation.

[0024] The lifting motor 7 preferably uses a stepper motor, which drives the ball screw 5 to rotate through a coupling. The internal thread of the bushing on the rear side of the motor frame 6 is adapted to the ball screw 5 to convert the rotational motion into linear motion. The ball screw 5, in conjunction with the stepper motor pulse control, achieves a lifting accuracy of ±0.1mm, ensuring precise alignment between the compression spring tube 10 and the top of the spring. The ball screw 5 has a self-locking function. When the power is off, the motor frame 6 can remain stably at the current height, preventing the compression spring tube 10 from sliding down and colliding with the spring due to gravity.

[0025] The inner diameter of the limiting tube 4 of the fixed spring post 3 is 0.5mm larger than that of the fixed spring post 3. After the spring is inserted into the fixed spring post 3, the bottom of the spring contacts the top of the limiting tube 4, ensuring that the compression starting point of different springs is consistent and the standing effect is uniform. The large contact area between the spring tube 10 and the top of the spring can disperse pressure and prevent excessive local stress on the top of the spring, which could lead to deformation. At the same time, the surface of the pressure ring 18 is polished to reduce friction with the spring and prevent scratches on the spring surface.

[0026] The slide rail 15 of the lifting frame 2 sliding device is fixed to the ground by expansion bolts. The rotating motor 17 is preferably a servo motor, which drives the threaded screw 16 to rotate. The slider at the bottom of the lifting frame 2 is adapted to the threaded screw 16, which drives the lifting frame 2 to move horizontally along the slide rail 15. When the spacing of the fixed spring columns 3 on the rotating frame 1 is different, the distance between the compression spring device and the center of the rotating frame 1 can be adjusted by horizontally moving the lifting frame 2 to adapt to rotating frames 1 of different diameters; Precise alignment: The threaded screw 16 has a positioning accuracy of ±0.1mm, which ensures that the compression spring tube 10 and the fixed spring column 3 are coaxial, avoiding horizontal offset that could cause the spring to bend when compressed.

[0027] Detailed Workflow Summary Device initialization phase Step 1: Equipment Inspection and Parameter Setting Mechanical inspection: Check whether the rotating frame 1 rotates smoothly, whether the fixed spring column 3 is secure, and whether the limit tube 4 is intact; Check the spring mechanism: whether the pneumatic telescopic rod 9 extends and retracts smoothly, whether the inner pressure ring 18 of the spring tube 10 is worn, and whether the pressure of the pneumatic pump 8 is normal. Check the sliding device: whether the lifting frame 2 moves smoothly along the slide rail 15, and whether the threaded rod 16 is bent or corroded.

[0028] In actual use, parameters are set by configuring a conventional PLC programmer control system, such as the rotation speed of the rotating frame 1 is 0.5 r / min, the spring standing pressure is 15 kN, the compression time is 1 min, the lifting height of the compression spring tube 10 is 2 m, which is compatible with a 2 m long spring, and the horizontal position of the lifting frame 2 is 1 m, which is compatible with a 2 m diameter rotating frame 1.

[0029] Step 2: Equipment Debugging Rotation debugging: Start drive motor 11, rotate frame 1 one revolution, check the positioning accuracy of the workstation. If the coaxiality error is ≤0.5mm when the fixed spring column 3 moves to the bottom of the compression spring device, and the deviation exceeds the tolerance, fine-tune the speed of drive motor 11 through PLC programmer. Lifting and adjusting: Start the lifting motor 7 and drive the spring tube 10 to lift and lower once. Check the lifting height error. Set to 2m, the actual error should be ≤0.1mm. If it exceeds the tolerance, calibrate the lead parameter of the ball screw 5. Pressure adjustment: Start the air pump 8, set the pressure to 15kN, extend the spring tube 10 under no-load, and detect the actual pressure through the pressure sensor. If the pressure exceeds the tolerance, adjust the pressure regulating valve of the air pump 8.

[0030] Long spring standing stage Step 1: Spring clamping The operator vertically inserts a long spring, such as a 2m long and 30mm diameter 60Si2Mn spring, into the fixed spring post 3 of the rotating frame 1, with the bottom of the spring in contact with the top of the limiting tube 4, to ensure that the spring is clamped vertically. After clamping is completed, the operator presses the start button of the PLC programmer, and the rotating frame 1 begins to rotate, driving the fixed spring column 3 equipped with springs to move towards the vertical work position.

[0031] Step 2: Workstation switching and alignment When the fixed spring column 3 equipped with the spring moves directly below the compression spring device, the drive motor 11 stops and the rotating frame 1 is positioned. If there is a horizontal deviation between the compression spring device and the fixed spring column 3, the PLC programmer controls the rotation motor 17 to start, and the threaded screw 16 drives the lifting frame 2 to move horizontally along the slide rail 15, so that the compression spring tube 10 and the fixed spring column 3 are coaxial. When the lifting motor 7 starts, the ball screw 5 drives the motor frame 6 to descend along the lifting frame 2, and the compression spring tube 10 moves down synchronously until the bottom of the compression spring tube 10 is 10mm away from the top of the spring.

[0032] Step 3: Spring standing treatment When the pneumatic pump 8 starts, the pneumatic telescopic rod 9 extends downwards, the compression spring tube 10 moves downwards with the telescopic rod, the pressure ring 18 contacts the top of the spring and applies pressure, and the spring begins to compress. When the pressure reaches the set value, such as 15kN, the air pump 8 maintains the pressure and starts timing, such as 1 minute. During this period, the PLC programmer monitors the pressure change in real time. If the pressure drops, the air pump 8 automatically replenishes the pressure. After the standing time ends, the pneumatic telescopic rod 9 retracts upward, and the compression spring tube 10 moves upward and disengages from the top of the spring; the lifting motor 7 drives the compression spring tube 10 to rise to the initial height to avoid affecting the switching position of the rotating frame 1.

[0033] Step 4: Pick-up and Repeat Operation The drive motor 11 starts, and the rotating frame 1 continues to rotate, bringing the spring that has been set to the picking station, and at the same time bringing the next fixed spring column 3 with the spring that has not been set to the setting station. The operator removes the spring that has been set up at the picking station, checks the spring for any breakage or obvious deformation, and then clamps the new spring to be set up. Repeat steps 2-4 to achieve continuous cyclical operation until all springs are in place.

[0034] Equipment shutdown and maintenance phase Step 1: Shut down the equipment After all the springs are in place, press the stop button on the PLC programmer. The rotating frame 1 stops rotating, the compression spring device resets, the compression spring tube 10 rises to the highest position, and the lifting frame 2 moves to the initial horizontal position. Turn off the power to the air pump 8, drive motor 11, lifting motor 7, etc., and disconnect the main power supply.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long spring standing machine, characterized in that, The rotating frame (1) includes a rotating frame (1) and a spring device. The bottom of the rotating frame (1) is provided with a drive device and a frame base (14). The rotating frame (1) is mounted on the frame base (14) by bearings. The drive device drives the rotating frame (1) to rotate. The top of the rotating frame (1) is surrounded by several fixed spring columns (3). The spring device is located on one side of the rotating frame (1). The spring device includes a lifting frame (2), a motor frame (6), a lifting device, and a pneumatic pump (8). The motor frame (6) is slidably mounted on the lifting frame (2) by the lifting device. The pneumatic pump (8) is fixedly mounted on the motor frame (6). The output end of the pneumatic pump (8) is provided with a pneumatic telescopic rod (9). The bottom end of the pneumatic telescopic rod (9) is provided with a spring tube (10), and the spring tube (10) is perpendicular to the fixed spring column (3).

2. The long spring standing machine according to claim 1, characterized in that, The driving device includes a drive motor (11) and a reduction gear (12). A transmission gear ring (13) is provided on the bottom side of the rotating frame. The reduction gear (12) is installed at the output end of the drive motor (11) and meshes with the transmission gear ring (13).

3. The long spring standing machine according to claim 1, characterized in that, The lifting device includes a lifting motor (7) and a ball screw (5). The lifting frame (2) is provided with a track groove. The ball screw (5) is rotatably installed in the track groove. The lifting motor (7) is fixedly installed on the top of the lifting frame (2). The output end of the lifting motor (7) is connected to the ball screw (5). The rear side of the motor frame (6) is slidably fitted onto the ball screw (5) through a bushing.

4. A long spring standing machine according to claim 1, characterized in that, The bottom of the fixed spring post (3) is provided with a limiting tube (4), and the inside of the compression spring tube (10) is provided with a pressure ring (18).

5. A long spring standing machine according to claim 1, characterized in that, The bottom of the lifting frame (2) is provided with a slide rail (15), and the slide rail (15) is provided with a track groove. The lifting frame (2) is slidably mounted on the slide rail (15) by a sliding device.

6. A long spring standing machine according to claim 5, characterized in that, The sliding device includes a threaded screw (16) and a rotary motor (17). The slide rail (15) is provided with an adjustment groove. The threaded screw (16) is rotatably installed in the adjustment groove. The rotary motor (17) is fixedly installed at one end of the slide rail (15), and the output end of the rotary motor (17) is connected to the threaded screw (16). The bottom of the lifting frame (2) is slidably mounted on the slide rail (15) and the threaded screw by a slider.

Images