Small cylindrical helical compression spring strong pressure treatment device and treatment method thereof

Abstract

The invention discloses a small cylindrical helical compression spring strong pressure treatment device and a treatment method thereof.The small cylindrical helical compression spring strong pressure treatment device comprises a bottom plate, a plurality of screws are fixedly arranged on the bottom plate of the device, return springs sleeve the screws, and movable plate assemblies are slidably arranged on the screws 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 invention relates to the technical field of process equipment, and in particular to strong pressing treatment of springs with smaller material diameters and median diameters. Background Art

[0002] The formed spring needs to be compressed (twisted) until the surface of the spring material produces a beneficial residual stress opposite to the working stress. This is to achieve the purpose of improving the spring's load-bearing capacity and stabilizing the assembly size. When the strong pressure treatment is carried out, the spring needs to have a certain length of positioning guide. Small helical springs are affected by the material diameter, the number of effective turns and the amount of compression, and are prone to bending during the compression process. Therefore, when the small helical spring is subjected to strong pressure treatment, the guide length needs to be higher than the free height of the spring to ensure that the spring does not bend during the strong pressure treatment. Summary of the invention

[0003] In view of this, the present invention proposes a small cylindrical helical compression spring strong pressure processing device and a processing method thereof.

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

[0005] A small cylindrical helical compression spring strong pressure processing device comprises 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 arranged 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 arranged above the fixed plate, a detachable fixing assembly is arranged 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 comprises 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 penetrate the movable support plate.

[0009] Preferably, the screw rod is of a step type, the lower surface of the fixing plate is in contact with the step of the screw rod, and the upper surface is fixedly connected to the screw rod 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 assembly 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] The present invention also discloses a method for strong pressing of a small cylindrical helical compression spring, comprising the following steps:

[0015] S1. Install the movable bottom plate and the movable support plate as a whole, pass the screw through and press fit them onto the return spring; at the same time, pass the fixed plate through the guide pin and the guide column, and then make its lower surface fit with the step surface of the screw, and fix it with the fixing nut;

[0016] S2. According to the number of guide pins, a small cylindrical helical compression spring to be subjected to strong pressure treatment is selected and passed through the guide pins, so that the spring to be compressed falls onto the fixed plate, and the upper surface of the movable support plate is in contact with the lower surface of the fixed plate;

[0017] S3, slide the pressing plate to the upper end of the guide pin through the screw, and at this time, a gap of 0.05-0.1mm is retained between the pressing plate and the guide pin;

[0018] S4. Place the pressing block at the center of the upper surface of the pressing plate, and then operate the press to apply pressure to the upper surface of the pressing block. At this time, the pressing plate is pressed to push the assembly consisting of the guide column, the movable bottom plate, the movable support plate, and the guide pin to move downward, and the return spring is compressed and stores force. At the same time, the pressing plate compresses the spring to be pressed.

[0019] S5. When the lower surface of the pressure plate fits with the upper surface of the positioning pin, the strong compression amount of the spring to be processed is reached. The handle nut and the screw are tightened through the thread to fix the pressure plate. The press is depressurized and the device is moved to the platform to stand still. At this time, the strong compression operation of the small cylindrical helical compression spring is completed;

[0020] S6. After the static state is completed, loosen and remove the handle nut, remove the pressure block and the pressure plate, manually press down the assembly consisting of the movable bottom plate, the movable support plate, the guide pins and the guide pillars, and leave the spring that has been subjected to strong pressure treatment on the surface of the fixed plate. The spring that has been subjected to strong pressure treatment is recovered and waits for inspection;

[0021] S7. After the recovery is completed, the manually applied pressure is released to make the upper surface of the movable support plate fit with the lower surface of the fixed plate again.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention provides a device and method for strong pressure treatment of multiple small cylindrical spiral compression springs, which only requires one operator. The fixed plate provides support for the springs to be strong pressure treated. The pressure is transferred to the pressure plate by operating the press machine to apply pressure to the pressure block to achieve the strong pressure treatment of the springs. The springs are positioned and guided by guide pins. The device includes one hundred guide pins, which can achieve strong pressure treatment of one hundred small cylindrical spiral compression springs at a time. The movable fixed plate and support spring can reset the device that has completed the strong pressure treatment, which is convenient for the next strong pressure treatment. The guide pin can ensure the accuracy and stability of the device during the whole strong pressure treatment process, and the positioning pin can ensure the compression length of the spring. The whole device is easy and convenient to operate, which improves work efficiency and product quality.

[0024] 2. The whole device uses the resettability of the spring to guide the entire strong pressure process of the spring through the guide pin, which improves the accuracy and stability of the spring during strong pressure. The device is easy to operate, light in structure, and can achieve strong pressure treatment of 100 springs at a time, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the front view of the present invention;

[0027] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the middle I area;

[0028] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a side view of the present invention;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide pin of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the movable support plate of the present invention.

[0031] 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. Discharge handle. DETAILED DESCRIPTION

[0032] 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.

[0033] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Please refer to the attached Figure 1 To Attachment Figure 6 , the technical solution is specifically as follows:

[0036] 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;

[0037] 100 guide pins 7 are fixed on the movable support plate 5 through transition fit, two guide posts 12 penetrate the movable support plate 5 from the lower surface and are fixed on the movable support plate 5 through 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 bottom plate 4 and the movable support plate 5. The movable bottom 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 limitation on the number of guide pins 7. The number of 100 is just to reflect that the technical solution can handle many springs that need to be compressed.

[0038] The assembled movable bottom plate 4 and movable support plate 5 are passed through four screw rods 18 and pressed onto four return springs 3; the fixed plate 17 is passed through one hundred guide pins 7 and two guide pillars 12, and then the lower surface thereof is fitted with the stepped surface of the four screw rods 18, and then the fixed plate 1717 is fixed by using four nuts and four screw rods 18 to be screwed and tightened, and the four positioning pins 13 are fixed to the fixed plate 17 by interference fit, and it can be seen that the screw rod 18 is a stepped screw rod 18, which is conducive to limiting the position of the fixed plate 17;

[0039] At the upper end of the fixed plate 17, there is a pressing plate 16 slidably connected to the screw rod 18. The pressing 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 contacts the upper end of the guide column 12. A pressing block 9 is placed at the center of the upper end of the pressing plate 16. At the same time, a handle nut 6 is screwed on the screw rod 18 above the pressing plate 16. The pressing plate 16, the pressing block 9 and the handle nut 6 are used when performing a strong pressure treatment operation.

[0040] A moving handle 2 is provided on the device bottom plate 1 , a discharging handle 19 is provided on the fixing plate 17 , and a tightening handle 11 is provided on the pressing plate 16 .

[0041] The process of using this technical solution:

[0042] Step 1, install the movable bottom plate 4 and the movable support plate 5 as a whole, pass the screw 18 and press it 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;

[0043] 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, and the upper surface of the movable support plate 5 fits with the lower surface of the fixed plate 17;

[0044] Step 3, slide the pressing plate 16 to the upper end of the guide post 12 through the screw 18, and install the guide until it fits the step surface of the guide post 12 if there is a hole. At this time, a gap of 0.05-0.1mm is reserved between the pressing plate 16 and the guide pin 7;

[0045] 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 to move downward, and the return spring 3 is compressed and stored. At the same time, the pressing plate 16 compresses the spring to be subjected to strong pressure treatment.

[0046] 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 amount 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 the platform to stand still. At this time, the strong compression operation of the small cylindrical helical compression spring is completed;

[0047] Step 6, after the static state is over, loosen and remove the handle nut 6, remove the pressure block 9 and the pressure plate 16, 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, and leave the spring that has completed the strong pressure treatment on the surface of the fixed plate 17, and recycle the spring that has completed the strong pressure treatment and wait for inspection;

[0048] Step 7: After the recovery is completed, the manually applied pressure is released to make the upper surface of the movable support plate 5 and the lower surface of the fixed plate 17 fit together again.

[0049] Step 8: Repeat the above steps to carry out the strong compression operation of the next batch of small cylindrical helical compression springs.

[0050] The whole device utilizes the resettability of the spring and guides the whole strong pressing process of the spring through the guide pin 7, thereby improving the accuracy and stability of the spring during strong pressing. The device is easy to operate, light in structure, and can realize strong pressing of 100 springs at a time, thereby improving work efficiency.

[0051] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which 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 bottom plate, characterized in that: A plurality of screw rods (18) are fixedly arranged 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 arranged 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 arranged on the movable plate assembly, the fixed plate (17) passes through the guide assembly, the screw rod (18) and the guide pin (7), the fixed plate (17) is fixedly arranged on the screw rod (18), a pressing assembly slidably arranged on the screw rod (18) is arranged above the fixed plate (17), and a detachable fixing assembly is arranged at the top 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 is characterized in that: The movable plate assembly comprises a movable bottom plate (4) and a movable support plate (5); the movable bottom plate (4) is connected and fixed by means of 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), the lower surfaces of the guide column (12) and the guide pin (7) are in contact with the movable bottom plate (4) and penetrate the movable support plate (5).

4. The small cylindrical helical compression spring strong pressure treatment device according to claim 1 is characterized in that: The screw rod (18) is of a step type, the lower surface of the fixing plate (17) is in contact with the step of the screw rod (18), and the upper surface is fixedly connected to the screw rod (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 arranged on the upper surface of the fixing plate (17).

6. The small cylindrical helical compression spring strong pressure treatment device according to claim 1 is characterized in that: The pressing assembly comprises a pressing plate (16) slidably arranged on the screw rod (18) and a pressing block (9) arranged on 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 small cylindrical helical compression springs according to any one of claims 1 to 7, characterized in that: A moving handle (2) is provided on the bottom plate (1) of the device, a discharging handle (19) is provided on the fixing plate (17), and a tightening handle (11) is provided on the pressing assembly.

9. A method for strong pressure treatment of a small cylindrical helical compression spring, characterized in that: The following steps are involved: S1. Install the movable bottom 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); S2. According to the number of guide pins (7), a small cylindrical helical compression spring to be subjected to strong pressure treatment is selected and passed through the guide pins (7), so that the spring to be compressed falls onto the fixed plate (17), and at this time, the upper surface of the movable support plate (5) is in contact with the lower surface of the fixed plate (17); S3, slide the pressing plate (16) to the upper end of the guide post (12) through the screw (18), and at this time, a gap of 0.05 to 0.1 mm is retained between the pressing plate (16) and the guide pin (7); S4. Place the pressing block (9) at the center of the upper surface of the pressing plate (16), and then operate the press machine 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, and the return spring (3) is compressed to store force. At the same time, the pressing plate (16) compresses the spring to be subjected to strong pressure treatment. S5. When the lower surface of the pressure plate (16) is in contact with the upper surface of the positioning pin (13), the strong compression amount of the spring to be processed is reached, and the handle nut (6) and the screw rod (18) are screwed together to fix the pressure plate (16). The pressure of the press is released, and the device is moved to a platform to stand still. At this time, the strong compression operation of the small cylindrical helical compression spring is completed; S6. After the static state is completed, the handle nut (6) is loosened and removed, the pressure block (9) and the pressure plate (16) are removed, and the assembly consisting of the movable bottom plate (4), the movable support plate (5), the guide pin (7) and the guide column (12) is manually pressed down, and 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; S7. After the recovery is completed, the manually applied pressure is released so that the upper surface of the movable support plate (5) and the lower surface of the fixed plate (17) are again fitted together.

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