A spring force value full inspection machine

Abstract

The application discloses a spring force value full detection machine and belongs to the technical field of spring detection. The spring force value full detection machine comprises a shell, a detection area is arranged in the shell, inner detection blocks are arranged at the upper and lower ends of the detection area, outer detection rings are slidably arranged on the outer sides of the inner detection blocks, a plurality of extension blocks are arranged at one end of the outer detection rings which faces the middle part of the detection area, and connecting hooks are arranged at one end of the inner detection blocks which faces the middle part of the detection area. The application solves the problem that tension test and pressure test need to be completed in different stations or different clamping states in the prior art spring detection equipment and the problem that the tension and pressure integrated detection cannot be realized in the same station. The movable outer detection rings and the inner detection blocks are arranged, so that the problem that the tension and pressure integrated detection cannot be realized in the same station is solved.

Description

Technical Field

[0001] This invention relates to the field of spring testing technology, specifically to a machine for fully inspecting spring force values. Background Technology

[0002] The spring force value full inspection machine is an automated testing equipment used for quality control in spring production. Its core function is to test the force value of each spring. The spring to be tested is sent to the testing station, and tensile or compressive loads are applied to the spring through a preset program. Force and displacement data are collected in real time. This equipment is widely used in spring production lines in industries such as automobiles, electronics, and machinery manufacturing. It is a key quality control link to ensure the consistency and reliability of spring products leaving the factory.

[0003] Chinese patent CN216284045U discloses a spring force testing device, including a base, a testing rod fixedly installed at the top of the base, a sleeve rod sleeved on the outer wall of the testing rod, and a sliding sleeve slidably connected to the inner wall of the sliding track. One end of the sliding sleeve is fixedly connected to the outer wall of the sleeve rod. This application allows the operator to adjust the fixed frame to a suitable position for the operator to block the view by adjusting the rod itself and rotating the crossbar and the adjusting rod. When the spring is fixed for testing by the hook, the operator can directly observe the tensile condition of the force test through the transparent shield. If the detected elastic force is large, the shielding area can be expanded by rotating the two flip plates.

[0004] Chinese patent CN222364753U discloses a spring tension testing machine, which includes a testing machine body. A testing mechanism is provided on one side of the surface of the testing machine body. When components are installed at both ends of the spring, one end of the spring is placed in the middle of the first mounting block and the other end is placed in the middle of the second mounting block. The first bolt and the second bolt are tightened, and the second mounting block is moved by the sliding plate. At this time, the spring can be stretched or compressed as needed, and the pressure value can be detected by the stress sensor.

[0005] In the aforementioned spring testing equipment, tensile and compressive tests need to be completed at different workstations or under different clamping conditions, making it impossible to achieve integrated tensile and compressive testing at the same workstation. Summary of the Invention

[0006] The purpose of this invention is to provide a spring force value full inspection machine, which solves the problem mentioned in the background art that it is impossible to achieve integrated tension and compression inspection at the same workstation by setting a movable outer inspection ring and an inner inspection block.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a spring force value full inspection machine, comprising a housing, an inspection area inside the housing, inner inspection blocks at both the upper and lower ends of the inspection area, an outer inspection ring slidably sleeved on the outside of the inner inspection blocks, a plurality of extension blocks at one end of the outer inspection ring facing the center of the inspection area, a connecting hook at one end of the inner inspection blocks facing the center of the inspection area, a second telescopic rod between the housing and the inner inspection blocks, the second telescopic rod located at the upper end of the inspection area and the second telescopic rod located at the lower end of the inspection area being independently controlled and capable of extending and retracting separately, a first telescopic rod between the housing and the outer inspection ring, and a clamping piece slidably disposed on the inner circumferential surface of the outer inspection ring.

[0008] Preferably, a strip-shaped slide rail is provided inside the outer detection ring, the clamp is slidably disposed inside the slide rail, and a threaded rod is provided inside the slide rail along the radial direction of the outer detection ring, and the threaded rod passes through the clamp and is threadedly engaged with the clamp.

[0009] Preferably, the end of the clip facing the center of the outer detection ring is provided with an anti-detachment clip.

[0010] Preferably, the end of the threaded rod is provided with an adjustment handle.

[0011] Preferably, a set of first telescopic rods consists of a pair, with the two first telescopic rods located on both sides of the second telescopic rod.

[0012] Preferably, a guide ring is fixedly provided on the outer shell, a first guide rod is provided on the outer detection ring facing the guide ring, and a second guide rod is provided on the inner detection block facing the guide ring, with the first guide rod and the second guide rod slidably passing through the inside of the guide ring.

[0013] Preferably, there are four of each of the first and second guide rods evenly distributed around the perimeter.

[0014] Preferably, a detection ruler is vertically arranged on one side of the detection area, and pointers are fixedly arranged on the side of the outer detection ring and the connecting hook pointing towards the detection ruler.

[0015] Preferably, a panel is rotatably provided at the front end of the outer shell, the panel is rotatably connected to the outer shell via a connecting shaft, and a base is provided at the bottom of the outer shell.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves tension and compression testing at the same workstation by sliding the inner detection block and the outer detection ring together, with a connecting hook on the inner detection block and an extension block and clamping plate on the outer detection ring. The connecting hook allows for tension and compression testing of springs with hooks, while the clamping plate and anti-detachment plate allow for tension and compression testing of springs without hooks. Furthermore, the extension block allows for pressure testing of springs. This eliminates the need to transfer springs between different workstations, effectively improving testing efficiency and solving the technical problem in existing technologies where tension and compression testing must be performed at different workstations or under different clamping conditions.

[0017] 2. This invention sets the second telescopic rod located at the upper end of the detection area and the second telescopic rod located at the lower end of the detection area to be independently controlled and can extend and retract separately. This allows the upper connecting hook of the hooked spring to retract and avoid the upper hook of the spring during pressure testing, while the lower connecting hook remains extended and inserted into the spring to act as a central guide rod. This not only avoids the connecting hook from squeezing and damaging the spring hook, but also effectively prevents the spring from radially shifting or accidentally flying out during the compression process, significantly improving the safety and detection accuracy of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a front view of the internal structure of the detection area of ​​the present invention; Figure 3 For the present invention Figure 2 Enlarged view of a portion of region A in the middle; Figure 4 This is a schematic diagram of the slide rail position relationship of the present invention; Figure 5 This is a schematic diagram of the shrinkage trajectory of the internal detection block in this invention; Figure 6 This is a schematic diagram of the elongation trajectory of the outer detection ring of the present invention.

[0019] In the diagram: 1. Base; 2. Outer shell; 3. Panel; 4. Connecting shaft; 5. Detection area; 6. Detection ruler; 7. Outer detection ring; 8. Connecting hook; 9. Pointer; 10. Adjustment handle; 11. Clamping plate; 12. Anti-detachment plate; 13. Inner detection block; 14. Slide rail; 15. Threaded rod; 16. First telescopic rod; 17. Second telescopic rod; 18. Guide ring; 19. First guide rod; 20. Second guide rod; 21. Extension block. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] like Figure 1As shown, a spring force value full inspection machine according to this embodiment includes a base 1, a housing 2, and a panel 3. The housing 2 is installed on the upper end of the base 1, and the panel 3 is rotatably disposed on the front end of the housing 2. The panel 3 and the housing 2 are rotatably connected by a connecting shaft 4. The operator can rotate the panel 3 around the connecting shaft 4 to open or cover the internal space of the housing 2. The panel 3 is preferably made of a transparent material, such as tempered glass or high-transparency engineering plastic, so that the operator can directly observe the real-time state of the spring in the inspection area 5 from the outside during the operation of the equipment.

[0022] like Figure 2 As shown, the inner part of the outer shell 2 is provided with a detection area 5, which provides a working space for spring detection. The upper and lower ends of the detection area 5 are respectively provided with inner detection blocks 13. Each inner detection block 13 is fitted with an outer detection ring 7. The upper outer detection ring 7 and the lower outer detection ring 7 are symmetrically arranged in structure. The upper inner detection block 13 and the lower inner detection block 13 are also symmetrically arranged. The inner detection block 13 and the outer detection ring 7 form a sliding fit relationship. The inner detection block 13 can slide up and down relative to the outer detection ring 7 along the axial direction of the detection area 5.

[0023] A connecting hook 8 is fixedly installed at one end of the inner detection block 13 facing the middle of the detection area 5. The connecting hook 8 is used to hook the hook at the end of the spring during the tensile test. An extension block 21 is provided at one end of the outer detection ring 7 facing the inner detection block 13. Four extension blocks 21 are evenly distributed around the inner detection block 13.

[0024] The inner detection block 13 has a groove adapted to the extension block 21. When the inner detection block 13 slides to the retracted position relative to the outer detection ring 7, the end of the extension block 21 can be accommodated in the groove. The groove is located in a position corresponding to the extension block 21. The extension block 21 and the groove form a fitting relationship, ensuring that the extension block 21 is not obstructed when the outer detection ring 7 moves axially.

[0025] like Figure 3 and Figure 4 As shown, multiple clamping pieces 11 are slidably arranged on the outer detection ring 7. A strip-shaped slide rail 14 is radially opened on the inner wall of the outer detection ring 7. The clamping pieces 11 are slidably arranged in the slide rail 14 and move radially along the outer detection ring 7 under the guidance of the slide rail 14. A threaded rod 15 is arranged radially inside the slide rail 14 along the outer detection ring 7. The threaded rod 15 passes through the clamping piece 11 and is threadedly engaged with the clamping piece 11. One end of the threaded rod 15 extends out of the outer detection ring 7. An adjustment handle 10 is fixedly connected to the threaded rod 15. When the operator manually turns the adjustment handle 10, under the circumferential limiting action of the slide rail 14, the clamping piece 11 converts the rotational motion of the threaded rod 15 into its own radial linear motion. The four extension blocks 21 and the clamping pieces 11 are evenly distributed along the circumference of the outer detection ring 7 to ensure that the clamping force applied to the end of the spring is symmetrical and uniform.

[0026] An anti-detachment piece 12 is fixedly provided at one end of the clamping piece 11 facing the center of the outer detection ring 7. The size of the anti-detachment piece 12 matches the gap between two adjacent coils at the end of the spring. When the clamping piece 11 moves radially, the anti-detachment piece 12 can be engaged between adjacent coils at the end of the spring. The end of the anti-detachment piece 12 can be set as a slightly raised hook-shaped structure. In this way, once the anti-detachment piece 12 is engaged in the coil gap, when the outer detection ring 7 moves axially away from the spring, the anti-detachment piece 12 can hook the coil, thereby forming a stable clamping relationship and effectively preventing the spring from coming out of the clamping piece 11 during the stretching process. For springs with different wire diameters, clamping pieces 11 with anti-detachment pieces 12 of different thicknesses can be replaced to adapt to coil gaps of different sizes.

[0027] The outer shell 2 and the inner detection block 13 located at the upper end of the detection area 5 are provided with a second telescopic rod 17. Similarly, the outer shell 2 and the inner detection block 13 located at the lower end of the detection area 5 are provided with a second telescopic rod 17. A set of first telescopic rods 16 are provided between the outer shell 2 and the outer detection ring 7 located at the upper end of the detection area 5. A set of first telescopic rods 16 are also provided between the outer shell 2 and the outer detection ring 7 located at the lower end of the detection area 5.

[0028] Both the first telescopic rod 16 and the second telescopic rod 17 can be electric push rods, hydraulic cylinders or pneumatic cylinders, and this embodiment does not make specific limitations on this.

[0029] The first telescopic rod 16 at the upper end of the detection area 5 and the first telescopic rod 16 at the lower end of the detection area 5 can be driven synchronously by the same control signal to ensure that the outer detection rings 7 at the upper and lower ends move synchronously towards each other or synchronously away from each other. The second telescopic rod 17 at the upper end of the detection area 5 and the second telescopic rod 17 at the lower end of the detection area 5 are controlled independently and can extend and retract separately.

[0030] The second telescopic rod 17 is located in the central area of ​​the inner detection block 13, while a pair of first telescopic rods 16 are respectively located on both sides of the second telescopic rod 17. A set of first telescopic rods 16 consists of a pair, and the two first telescopic rods 16 are symmetrically arranged on the left and right sides of the second telescopic rod 17. The driving force of the outer detection ring 7 and the inner detection block 13 acts on their respective central and symmetrical positions, which helps to ensure that the force is uniform and the movement is stable during the telescopic process. For the upper structure, the fixed end of the second telescopic rod 17 is connected to the top wall of the outer shell 2, and its movable end is connected to the center of the upper surface of the inner detection block 13. The fixed ends of the two first telescopic rods 16 are also connected to the top wall of the outer shell 2, and their movable ends are respectively connected to the left and right sides of the upper surface of the outer detection ring 7. The arrangement of the lower structure of the detection area 5 is symmetrical to that of the upper structure, and will not be described in detail here.

[0031] A guide ring 18 is also fixedly installed on the outer shell 2. The guide ring 18 is located inside the outer shell 2 and close to the upper and lower ends of the detection area 5. A first guide rod 19 is fixedly installed at the end of the outer detection ring 7 facing the guide ring 18, and a second guide rod 20 is fixedly installed at the end of the inner detection block 13 facing the guide ring 18. Both the first guide rod 19 and the second guide rod 20 slide through the guide ring 18, and the guide ring 18 constrains and guides their extension and retraction directions. There are four first guide rods 19 and four second guide rods 20 evenly distributed around the outer detection ring 7. The four first guide rods 19 are evenly arranged along the circumference of the outer detection ring 7, and the four second guide rods 20 are evenly arranged along the circumference of the inner detection block 13. The guide ring 18 has eight corresponding guide holes for the first guide rods 19 and the second guide rods 20 to pass through. By setting four evenly distributed first guide rods 19 and second guide rods 20, the rotation around the axis or radial wobble of the outer detection ring 7 and the inner detection block 13 during the extension and retraction process can be effectively prevented, which significantly improves the detection accuracy and structural stability.

[0032] A detection ruler 6 is vertically installed on one side of the detection area 5. The detection ruler 6 extends along the axial direction of the detection area 5. A pointer 9 is fixedly installed on the side of the outer detection ring 7 and the connecting hook 8 pointing towards the detection ruler 6. When the outer detection ring 7 and the inner detection block 13 move along the axial direction, the pointer 9 moves synchronously with the components. The pointer 9 can indicate the corresponding displacement value on the detection ruler 6.

[0033] Working principle: such as Figure 5 and Figure 6As shown, when measuring the tension of a spring with hooks at both ends, the hooks at both ends of the spring are respectively attached to the connecting hooks 8 at the upper and lower ends of the detection area 5. The second telescopic rods 17 at the upper and lower ends of the detection area 5 retract simultaneously, causing the inner detection blocks 13 and connecting hooks 8 at the upper and lower ends to move away from the center of the detection area 5, while the outer detection ring 7 remains stationary. The spring is directly stretched through the connecting hooks 8 to complete the tension value measurement. During the measurement process, the pointer 9 set on the side of the connecting hook 8 moves with the component and indicates the displacement change on the detection ruler 6. When measuring the tension of a spring without hooks at both ends, first, the second telescopic rods 17 at the upper and lower ends of the detection area 5 are retracted, causing the inner detection blocks 13 and connecting hooks 8 to retract into the outer detection ring 7. Then, the spring is manually twisted. Adjusting handle 10 causes threaded rod 15 to rotate. Threaded rod 15 engages with clamping piece 11. Under the guidance and constraint of slide rail 14, the rotational motion of clamping piece 11 is converted into linear motion along the radial direction of outer detection ring 7. This causes the anti-detachment pieces 12 at the ends of all clamping pieces 11 to engage between adjacent coils at the ends of the spring. Finally, the first telescopic rods 16 at both ends of the detection area 5 retract synchronously, causing the outer detection rings 7 at both ends to move away from the center of the detection area 5. The outer detection rings 7, clamping pieces 11, and anti-detachment pieces 12 together clamp and stretch both ends of the spring, completing the tension measurement. The pointer 9 located on the side of the outer detection ring 7 moves with the component and indicates the displacement change on the detection ruler 6. When measuring the pressure of a spring with hooks at both ends... First, the second telescopic rod 17 at the upper end of the detection area 5 retracts, causing the inner detection block 13 and connecting hook 8 to retract into the outer detection ring 7, creating clearance space. This allows the hook at the upper end of the spring to be accommodated in this clearance position. The second telescopic rod 17 at the lower end of the detection area 5 remains stationary, keeping the connecting hook 8 extended. The spring is then positioned along the axial direction of the detection area 5, with its lower end fitted over the lower connecting hook 8. The lower connecting hook 8 is inserted into the spring as a central guide rod. Because the inner diameter of the spring is larger than the outer diameter of the connecting hook 8, there is a gap between the connecting hook 8 and the inner wall of the spring after insertion, preventing jamming. The hook at the lower end of the spring is located outside the lower connecting hook 8, side by side, and does not contact each other during compression, thus preventing interference with the spring. The spring's hooks themselves can cause compression or damage. The two ends of the spring are respectively attached to the extension blocks 21 of the upper and lower outer detection rings 7. Specifically, the upper end face of the spring is attached to the extension block 21 of the upper outer detection ring 7, and the lower end face is attached to the extension block 21 of the lower outer detection ring 7. Then, the first telescopic rods 16 at both ends of the detection area 5 extend synchronously, pushing the upper and lower outer detection rings 7 towards each other. Pressure is applied to the spring through the extension blocks 21, completing the pressure measurement. During this process, the retraction of the upper connecting hook 8 provides clearance for the hook structure at the upper end of the spring, while the lower connecting hook 8 remains extended and inserted into the spring, serving as a guide and preventing deviation, without damaging the hooks of the spring itself. When measuring the pressure of a spring without hooks at both ends...With the second telescopic rods 17 at both ends of the detection zone 5 remaining stationary, and the connecting hooks 8 at both ends extended, the spring is positioned along the axial direction of the detection zone 5. The upper and lower ends of the spring are respectively fitted onto the outside of the connecting hooks 8 at both ends. The connecting hooks 8 are inserted into the spring from both ends, serving to guide and prevent deviation. The two ends of the spring are respectively attached to the extension blocks 21 of the outer detection rings 7 at both ends.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the 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 invention.

Claims

1. A spring force value full inspection machine, comprising a housing (2), wherein a detection area (5) is provided inside the housing (2), characterized in that, The detection area (5) is provided with inner detection blocks (13) at both the upper and lower ends. An outer detection ring (7) is slidably sleeved on the outside of the inner detection block (13). Multiple extension blocks (21) are provided at one end of the outer detection ring (7) facing the middle of the detection area (5). A connecting hook (8) is provided at one end of the inner detection block (13) facing the middle of the detection area (5). A second telescopic rod (17) is provided between the outer shell (2) and the inner detection block (13). The second telescopic rod (17) located at the upper end of the detection area (5) and the second telescopic rod (17) located at the lower end of the detection area (5) are independently controlled and can be extended and retracted separately. A first telescopic rod (16) is provided between the outer shell (2) and the outer detection ring (7). A clip (11) is slidably provided on the inner circumferential surface of the outer detection ring (7).

2. The spring force value full inspection machine according to claim 1, characterized in that, The outer detection ring (7) is provided with a strip-shaped slide rail (14), and the clamp (11) is slidably disposed in the slide rail (14). The slide rail (14) is provided with a threaded rod (15) along the radial direction of the outer detection ring (7), and the threaded rod (15) passes through the clamp (11) and is threadedly engaged with the clamp (11).

3. The spring force value full inspection machine according to claim 1, characterized in that, The clamp (11) is provided with an anti-detachment piece (12) at one end facing the center of the outer detection ring (7).

4. The spring force value full inspection machine according to claim 2, characterized in that, The end of the threaded rod (15) is provided with an adjustment handle (10).

5. The spring force value full inspection machine according to claim 1, characterized in that, A set of first telescopic rods (16) is provided in pairs, with the two first telescopic rods (16) located on both sides of the second telescopic rod (17).

6. The spring force value full inspection machine according to claim 1, characterized in that, A guide ring (18) is fixedly provided on the outer shell (2). A first guide rod (19) is provided on the outer detection ring (7) facing the guide ring (18). A second guide rod (20) is provided on the inner detection block (13) facing the guide ring (18). The first guide rod (19) and the second guide rod (20) are slidably disposed inside the guide ring (18).

7. The spring force value full inspection machine according to claim 6, characterized in that, The first guide rod (19) and the second guide rod (20) are both evenly distributed in four.

8. The spring force value full inspection machine according to claim 1, characterized in that, A detection ruler (6) is vertically installed on one side of the detection area (5), and pointers (9) are fixedly installed on the side of the outer detection ring (7) and the connecting hook (8) pointing towards the detection ruler (6).

9. The spring force value full inspection machine according to claim 1, characterized in that, A panel (3) is rotatably provided at the front end of the outer shell (2), and the panel (3) is rotatably connected to the outer shell (2) via a connecting shaft (4). A base (1) is provided at the bottom of the outer shell (2).

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