Strong pressure treatment device for small cylindrical helical compression spring

Abstract

The utility model discloses a small-sized cylindrical helical compression spring prestressing treatment device which comprises a device bottom plate, a plurality of screws are fixedly arranged on the device bottom plate, return springs are sleeved on the screws, and a movable plate assembly is arranged on the screws in a sliding mode and located on the upper surfaces of the return springs. A plurality of guide assemblies and guide pins are arranged on the movable plate assembly, the fixed plate penetrates through the guide assemblies, the screw rod and the guide pins, the fixed plate is fixedly arranged on the screw rod, a pressing assembly which is arranged on the screw rod in a sliding mode is arranged above the fixed plate, a detachable fixing assembly is arranged at the top end of the screw rod, and the movable plate assembly is fixedly arranged on the fixed plate. The fixing assembly is used for limiting the pressing assembly. According to the whole device, the resettable performance of the spring is utilized, the whole prestressing process of the spring is guided through the guide pin, and the prestressing accuracy and stability of the spring are improved. The device is simple and convenient to operate and light in structure, and can be used for forcedly pressing one hundred springs at a time, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of process equipment, in particular to a strong pressure treatment of a spring with a small material diameter and a small middle diameter. Background Art

[0002] Formed springs are compressed (torsed) until the surface of the spring material generates beneficial residual stress opposite to the working stress. This improves the spring's load-bearing capacity and stabilizes its overall dimensions. During compression, the spring requires a certain length of guide. Small coil springs are susceptible to bending during compression due to the material diameter, number of effective turns, and compression. Therefore, when compressing small coil springs, the guide length must be greater than the spring's free height to prevent bending during compression. Utility Model Content

[0003] In view of this, the utility model proposes a small cylindrical helical compression spring strong pressure processing device.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A small cylindrical helical compression spring strong pressure processing device includes a base plate, a plurality of screws are fixedly arranged on the base plate of the device, a return spring is sleeved on the screw, a movable plate assembly is slidably arranged on the screw and located on the upper surface of the return spring, a plurality of guide assemblies and guide pins are provided on the movable plate assembly, the fixed plate passes through the guide assembly, the screw and the guide pin, the fixed plate is fixedly arranged on the screw, a pressing assembly slidably arranged on the screw is provided above the fixed plate, and a detachable fixing assembly is provided on the top of the screw, and the fixing assembly is used to limit the pressing assembly.

[0006] As a further improvement of the above technical solution:

[0007] Preferably, the movable plate assembly includes a movable bottom plate and a movable support plate, and the movable bottom plate is connected and fixed by screws, washers and fixing pins.

[0008] Preferably, the guide assembly is a guide column, and the lower surfaces of the guide column and the guide pin are in contact with the movable bottom plate and pass through the movable support plate.

[0009] Preferably, the screw is stepped, the lower surface of the fixing plate contacts the step of the screw, and the upper surface is fixedly connected to the screw via a fixing nut.

[0010] Preferably, a plurality of positioning pins are provided on the upper surface of the fixing plate.

[0011] Preferably, the pressing assembly includes a pressing plate slidably arranged on the screw rod and a pressing block arranged on the upper end of the pressing plate.

[0012] Preferably, the fixing component is a handle nut, and the handle nut is threaded onto the screw rod.

[0013] Preferably, a moving handle is provided on the bottom plate of the device, a unloading handle is provided on the fixed plate, and a tightening handle is provided on the pressing assembly.

[0014] Compared with the existing technology, the beneficial effects of the utility model are:

[0015] 1. The present invention provides a device and method for applying strong pressure to multiple small cylindrical helical compression springs. Only one operator is required. A fixed plate provides support for the springs undergoing strong pressure treatment. By operating a press, pressure is applied to the pressure block, transferring the pressure to the pressure plate to achieve strong pressure treatment of the springs. Guide pins are used to position and guide the springs. The device includes one hundred guide pins, which can achieve strong pressure treatment of one hundred small cylindrical helical compression springs at a time. The movable fixed plate and support springs can reset the device after strong pressure treatment, facilitating the next strong pressure treatment. The guide pins can ensure the accuracy and stability of the device throughout the strong pressure treatment process, and the positioning pins can ensure the compressed length of the springs. The entire device is easy and convenient to operate, improving work efficiency and product quality.

[0016] 2. The entire device utilizes the spring's repositionability, using guide pins to guide the spring throughout the compression process, improving accuracy and stability during compression. The device is easy to operate, lightweight, and can compress up to 100 springs at a time, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the main view of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the middle I area;

[0020] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a side view of the present utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide pin of the present utility model;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the movable support plate of the utility model.

[0023] In the figure: 1. Installation base plate; 2. Moving handle; 3. Return spring; 4. Movable base plate; 5. Movable support plate; 6. Handle nut; 7. Guide pin; 8. Fixing pin; 9. Pressure block; 10. Fixing nut; 11. Tightening handle; 12. Guide column; 13. Positioning pin; 14. Screw; 15. Washer; 16. Pressure plate; 17. Fixing plate; 18. Screw; 19. Unloading handle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Please see the attached Figure 1 To the attached Figure 6 , this technical solution is specifically as follows:

[0028] Four screw rods 18 are screwed to the bottom plate 1 of the device through threads, and four return springs 3 are sleeved on the four screw rods 18;

[0029] 100 guide pins 7 are fixed to the movable support plate 5 through a transition fit, two guide posts 12 pass through the movable support plate 5 from the lower surface and are fixed to the movable support plate 5 through an interference fit, and then four screws 14 and washers 15 are used, and two fixing pins 8 are used to connect and fix the movable base plate 4 to the movable support plate 5. The movable base plate 4 is used to limit and fix the lower ends of the guide posts 12 and the guide pins 7. There is no special limit on the number of guide pins 7. The number of 100 is just to show that the present technical solution can handle many springs that need to be compressed.

[0030] The assembled movable bottom plate 4 and movable support plate 5 are passed through the four screws 18 and press-fitted onto the four return springs 3; the fixed plate 17 is passed through the one hundred guide pins 7 and the two guide pillars 12, and then its lower surface is fitted with the stepped surface of the four screws 18. Then, four nuts and the four screws 18 are tightened by threads to fix the fixed plate 1717. The four positioning pins 13 are fixed to the fixed plate 17 by interference fit. It can be seen that the screws 18 are stepped screws 18, which are conducive to limiting the position of the fixed plate 17.

[0031] At the upper end of the fixed plate 17, there is a pressure plate 16 that is slidably connected to the screw 18. The pressure plate 16 is guided and installed through the guide column 12 to fit the step surface of the guide column 12. If no hole is opened, it will contact the upper end of the guide column 12. A pressure block 9 is placed at the center of the upper end of the pressure plate 16. At the same time, a handle nut 6 is screwed on the screw 18 above the pressure plate 16. The pressure plate 16, the pressure block 9 and the handle nut 6 are used when performing a strong pressure treatment operation.

[0032] A moving handle 2 is provided on the device bottom plate 1 , a discharging handle 19 is provided on the fixed plate 17 , and a tightening handle 11 is provided on the pressing plate 16 .

[0033] The process of using this technical solution:

[0034] Step 1: Assemble the movable base plate 4 and the movable support plate 5 as a whole, pass the screw 18 and press fit them onto the return spring 3; at the same time, pass the fixed plate 17 through the guide pin 7 and the guide column 12, and then make its lower surface fit with the stepped surface of the screw 18, and fix it with the fixing nut 10;

[0035] Step 2: Pass one hundred small cylindrical helical compression springs to be subjected to strong pressure treatment through one hundred guide pins 7, so that the springs to be compressed fall onto the fixed plate 17. At this time, the upper surface of the movable support plate 5 is in contact with the lower surface of the fixed plate 17;

[0036] Step 3: Slide the pressing plate 16 to the upper end of the guide post 12 through the screw 18. If there is a hole, install the guide until it fits into the stepped surface of the guide post 12. At this time, there is a gap of 0.05 to 0.1 mm between the pressing plate 16 and the guide pin 7.

[0037] Step 4: Place the pressing block 9 at the center of the upper surface of the pressing plate 16, and then operate the press to apply pressure to the upper surface of the pressing block 9. At this time, the pressing plate 16 is pressed to push the assembly consisting of the guide column 12, the movable bottom plate 4, the movable support plate 5, and the guide pin 7 downward. The return spring 3 is compressed and stores force. At the same time, the pressing plate 16 compresses the spring to be pressed.

[0038] Step 5: When the lower surface of the pressing plate 16 is in contact with the upper surface of the positioning pin 13, the strong compression of the spring to be processed is reached. The handle nut 6 and the screw 18 are tightened by threads to fix the pressing plate 16. The press is depressurized and the device is moved to a platform for static rest. At this time, the strong compression operation of the small cylindrical helical compression spring is completed.

[0039] Step 6: After the static state is completed, loosen and remove the handle nut 6, remove the pressure block 9 and the pressure plate 16, and manually press down the assembly consisting of the movable bottom plate 4, the movable support plate 5, the guide pin 7, and the guide column 12. The spring that has completed the strong pressure treatment is left on the surface of the fixed plate 17, and the spring that has completed the strong pressure treatment is recovered and waits for inspection;

[0040] Step 7: After the recovery is completed, release the manually applied pressure to make the upper surface of the movable support plate 5 and the lower surface of the fixed plate 17 fit together again.

[0041] Step 8: Repeat the above steps to carry out the strong pressing operation of the next batch of small cylindrical helical compression springs.

[0042] The entire device utilizes the spring's resettability and guides the entire spring compression process via a guide pin 7, improving the accuracy and stability of the spring compression. The device is easy to operate, lightweight, and can achieve compression processing of 100 springs in a single operation, improving work efficiency.

[0043] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A small cylindrical helical compression spring strong pressure treatment device, comprising a device base plate (1), characterized in that: A plurality of screw rods (18) are fixedly provided on the bottom plate (1) of the device, a return spring (3) is sleeved on the screw rod (18), a movable plate assembly is slidably provided on the screw rod (18) and is located on the upper surface of the return spring (3), a plurality of guide assemblies and guide pins (7) are provided on the movable plate assembly, a fixed plate (17) is provided through the guide assembly, the screw rod (18) and the guide pin (7), the fixed plate (17) is fixedly provided on the screw rod (18), a pressing assembly slidably provided on the screw rod (18) is provided above the fixed plate (17), a detachable fixing assembly is provided at the top end of the screw rod (18), and the fixing assembly is used to limit the pressing assembly.

2. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 1, characterized in that: The movable plate assembly comprises a movable base plate (4) and a movable support plate (5), and the movable base plate (4) is connected and fixed by screws (14), washers (15) and fixing pins (8).

3. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 2, characterized in that: The guide assembly is a guide column (12), and the lower surfaces of the guide column (12) and the guide pin (7) are in contact with the movable bottom plate (4) and pass through the movable support plate (5).

4. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 1, characterized in that: The screw (18) is step-shaped, the lower surface of the fixing plate (17) contacts the step of the screw (18), and the upper surface is fixedly connected to the screw (18) via a fixing nut (10).

5. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 1, characterized in that: A plurality of positioning pins (13) are provided on the upper surface of the fixing plate (17).

6. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 1, characterized in that: The pressing assembly comprises a pressing plate (16) slidably arranged on the screw (18) and a pressing block (9) arranged at the upper end of the pressing plate (16).

7. The device for strong pressure treatment of small cylindrical helical compression springs according to claim 1, characterized in that: The fixing component is a handle nut (6), and the handle nut (6) is screwed onto the screw rod (18).

8. The device for strong pressure treatment of a small cylindrical helical compression spring according to any one of claims 1 to 7, characterized in that: A moving handle (2) is provided on the device bottom plate (1), a discharging handle (19) is provided on the fixed plate (17), and a tightening handle (11) is provided on the pressing assembly.

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