Spring force testing machine for spring production

Abstract

The utility model discloses a spring elasticity testing machine for spring production relates to the related technical field of spring production, the utility model discloses effective solution detects the spring displacement, the problem of breaking out, and the operation safety of giving consideration to detection accuracy, and it is through the drive screw rotation of driver, and a plurality of limit seat synchronous movement are driven through gear linkage, can adapt to different diameter spring and realize stable transverse limit, avoid uneven stress and lead to displacement, the anti -drop piece of auxiliary piece can hook it when spring has the tendency of breaking out, and eliminate the security risk, the docking mechanism ensures that the screw synchronous rotation of lower pressure disc and detection seat, and the limit seat adjustment amplitude is consistent, and further guarantee spring stress balance, and the limit seat staggered design avoids detection interference, and the whole improves elasticity detection data accuracy, and reduces the time -consuming of repositioning, and adapts to batch spring detection demand, and improves production quality control efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of spring production, specifically a spring force testing machine for spring production. Background Technology

[0002] In the field of spring manufacturing, the elasticity performance of springs is one of the core indicators for measuring their quality and applicability. From automotive shock absorber springs to miniature springs in electronic devices, the accuracy of elasticity directly determines the functional stability and service life of the product. As various industries continue to raise their requirements for spring performance, spring elasticity testing machines have become key equipment for ensuring quality in the production process. By simulating the actual stress state of the spring, it accurately detects its elasticity parameters, providing data support for spring design optimization and production quality control.

[0003] Existing spring force testing machines for spring production mainly consist of a testing seat, a lower pressure plate, a cylinder, and a control system. During use, the operator places the spring on the testing seat and uses the cylinder to drive the lower pressure plate to apply pressure to the spring, simulating the compression process of the spring under actual working conditions. At the same time, the control system collects and records the spring force data in real time. This type of equipment is widely used in spring manufacturing enterprises and can realize automated testing of spring force, which to a certain extent meets the quality control needs of mass production.

[0004] However, existing spring force testing machines have significant defects in actual testing. Because neither the pressure plate nor the testing seat has a limiting mechanism for the spring, when the cylinder drives the pressure plate to compress the spring, the spring is prone to displacement due to uneven force, and may even break out under pressure. This not only leads to distorted test data and affects the judgment of spring performance, but also poses a safety hazard, as the broken spring may cause injury to operators or equipment. At the same time, the spring needs to be repositioned and tested after displacement, which increases the testing time and labor costs and reduces the overall testing efficiency. Therefore, it is urgent to improve the existing spring force testing machine. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a spring force testing machine for spring production, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spring force testing machine for spring production, comprising a cylinder, a lower pressure plate, and a testing seat. Both the lower pressure plate and the testing seat are equipped with spring limiters, which consist of a screw, a driver, a first gear, a second gear, a transmission seat, and a limit seat. Multiple sets of the screw are rotatably mounted on both the lower pressure plate and the testing seat. A first gear is mounted on the inner end of the screw, and a driver is connected to the outer end. All sets of first gears mesh with the second gear. The transmission seat is threadedly connected to the screw and slidably connected to the corresponding lower pressure plate and testing seat. A limit seat for limiting the spring is mounted on the outer end of the transmission seat. An auxiliary block is installed on the outer end of the limiting seat, and an anti-detachment block is installed on the outer wall of the auxiliary block to further restrict the spring. The lower pressure plate and the detection seat are provided with a docking mechanism for connecting the two sets of spring limiters to ensure that the screws on the lower pressure plate and the detection seat rotate synchronously.

[0007] By adopting the above technical solution, multiple sets of screws can be rotated synchronously through gear linkage, which drives the limit seat to adjust precisely and adapt to the lateral limit of springs of different diameters to avoid displacement during detection; the anti-blocking and anti-spring popping-out mechanism ensures screw synchronization, taking into account both detection accuracy and operational safety, and improving quality control efficiency.

[0008] Furthermore, the outer walls of the pressure plate and the detection seat are provided with multiple sets of mounting grooves corresponding to the screw and the transmission seat, and the mounting grooves are slidably connected to the transmission seat. The pressure plate and the detection seat are rotatably connected to the driver, and the outer end of the driver is located outside the corresponding pressure plate and the detection seat.

[0009] By adopting the above technical solution, the mounting slot provides suitable installation and sliding space for the screw and transmission seat, ensuring smooth transmission; the external driver is easy to operate, and can be either a knob or a motor to adapt to different operating scenarios, reduce usage restrictions, and improve equipment flexibility.

[0010] Furthermore, both the first gear and the second gear are bevel gears, and the positions of multiple sets of first gears are staggered and connected by the second gears.

[0011] By adopting the above technical solutions, the first and second gears of the bevel gear design mesh tightly to ensure efficient power transmission; the staggered gear arrangement avoids interference, ensures synchronous rotation of multiple sets of screws, improves the consistency of limit seat adjustment, and further stabilizes the spring limit effect.

[0012] Furthermore, the first gear is designed as a bevel gear, and the second gear is designed as a face gear that meshes with multiple sets of first gears. The multiple sets of first gears are staggered in position and connected to each other by the second gear.

[0013] By adopting the above technical solutions, the second gear of the face gear design can simultaneously mesh with multiple sets of bevel gears, resulting in more stable transmission; the staggered gear layout prevents jamming, ensures synchronous drive of the screw to the limit seat, adapts to batch testing requirements, and reduces testing errors caused by transmission problems.

[0014] Furthermore, the multiple sets of screws installed on the lower pressure plate and the detection seat are staggered to ensure that the limit seat installed on the lower pressure plate and the limit seat installed on the detection seat are staggered.

[0015] By adopting the above technical solution, interference between the pressure plate and the testing seat components is avoided during testing, ensuring normal compression deformation of the spring, not affecting the acquisition of elastic force data, and ensuring a smooth testing process and accurate results.

[0016] Furthermore, the outer wall of the auxiliary block is designed with a slope, and multiple anti-detachment blocks are installed on the slope. The anti-detachment blocks are designed with an angled shape to hook the spring when the spring tends to pop outward. The sum of the length of the anti-detachment block and the width of the auxiliary block is less than the length of the limit seat, so as to ensure that the anti-detachment block will not affect the normal installation of the spring and ensure that the anti-detachment block will not affect the spring during the testing process.

[0017] By adopting the above technical solution, the size matching between the anti-detachment block and the auxiliary block does not affect the installation and testing of the spring. While ensuring safety, it avoids interference with the testing and improves the practicality of the equipment.

[0018] Furthermore, the docking mechanism includes an upper connecting column rotatably mounted on the lower pressure plate and a lower connecting column rotatably mounted on the detection seat. The inner ends of the upper connecting column and the lower connecting column are respectively connected to the corresponding second gear. A docking groove is opened at the top of the lower connecting column, and a docking block that is inserted into the docking groove is installed at the bottom of the upper connecting column. The docking block has a polygonal design, and the bottom corners of the docking block are all beveled.

[0019] By adopting the above technical solution, the polygonal docking block and the docking groove are precisely inserted to ensure synchronous transmission of the upper and lower connecting columns; the beveled design of the docking block facilitates quick docking, ensures synchronous rotation of the lower pressure plate and the detection seat screw, improves the efficiency of limit adjustment, and reduces operation time.

[0020] In summary, the present invention has the following main advantages: This invention effectively solves the problems of spring displacement and splintering during testing, balancing testing accuracy and operational safety. It drives a screw to rotate via a driver, which in turn drives multiple sets of limit seats to move synchronously through gear linkage. This allows it to adapt to springs of different diameters and achieve stable lateral limiting, preventing displacement caused by uneven force. The auxiliary block's anti-detachment block can hook the spring when it tends to splinter, eliminating safety hazards. The docking mechanism ensures that the screws of the lower pressure plate and the testing seat rotate synchronously, and the limit seats adjust with consistent amplitude, further ensuring balanced spring force. The staggered design of the limit seats avoids testing interference. Overall, it improves the accuracy of spring force testing data and reduces repositioning time, adapting to batch spring testing needs and improving production quality control efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention after removing the testing machine body, cylinder, lower pressure plate and testing seat; Figure 4 This is a schematic diagram of the structure of the present invention after the upper and lower connecting columns are attached together; Figure 5 This is a schematic diagram of the upper and lower connecting columns of this utility model.

[0022] In the diagram: 1. Test machine body; 2. Cylinder; 3. Lower pressure plate; 4. Detection seat; 5. Mounting slot; 6. Screw; 7. Driver; 8. First gear; 9. Second gear; 10. Transmission seat; 11. Limit seat; 12. Auxiliary block; 13. Anti-detachment block; 14. Upper connecting column; 15. Lower connecting column; 16. Docking slot; 17. Docking block. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] A spring force testing machine for spring production, such as Figure 1 - Figure 5 As shown, the components include the test machine body 1, cylinder 2, lower pressure plate 3, test seat 4, spring limiter, docking mechanism and anti-detachment components, etc. Among them, cylinder 2 is installed on the test machine body 1, and its output end is connected to the lower pressure plate 3. It is used to drive the lower pressure plate 3 to move up and down and apply test pressure to the spring. The lower pressure plate 3 and the test seat 4 are arranged vertically and vertically respectively. The two cooperate to form the spring compression test space, and both are equipped with spring limiters with the same structure to limit the spring laterally and prevent the spring from deviating or popping out during the test. Meanwhile, multiple sets of mounting grooves 5 are provided on the outer walls of the pressure plate 3 and the detection seat 4. The mounting grooves 5 provide installation and sliding space for the screw 6 and the transmission seat 10, ensuring that the transmission seat 10 can only slide laterally along the mounting grooves 5 to avoid displacement.

[0026] In this embodiment, the spring limiter is the core component to prevent spring displacement. It is provided on the lower pressure plate 3 and the detection seat 4, and each set consists of a screw 6, a driver 7, a first gear 8, a second gear 9, a transmission seat 10 and a limit seat 11. Multiple sets of screws 6 are rotatably mounted on both the lower pressure plate 3 and the detection seat 4. The multiple sets of screws 6 on the lower pressure plate 3 and the multiple sets of screws 6 on the detection seat 4 are staggered to ensure that the limit seats 11 of the two do not interfere with each other. The inner end of the screw 6 is equipped with a first gear 8, and the outer end is connected to a driver 7. The outer end of the driver 7 is located outside the lower pressure plate 3 or the detection seat 4 for easy operation. The driver 7 can be a knob or a motor to adapt to different needs.

[0027] Secondly, the first gear 8 meshes with the second gear 9 to achieve synchronous rotation of multiple sets of screws 6; In some examples, both the first gear 8 and the second gear 9 are bevel gears, and multiple sets of the first gear 8 are staggered and connected by the second gear 9; Of course, in other examples, it can also be set as follows: the first gear 8 is a bevel gear, and the second gear 9 is a face gear that meshes with multiple sets of first gears 8. Both designs can ensure uniform power transmission and ensure that multiple sets of screws 6 rotate at the same speed. The transmission seat 10 is threadedly connected to the screw 6 and slidably connected to the mounting groove 5. When the screw 6 rotates, it drives the transmission seat 10 to move laterally along the mounting groove 5. A limit seat 11 is installed at the outer end of the transmission seat 10. The outer wall of the limit seat 11 is in contact with the inner wall of the spring. The spring is laterally fixed by the outward movement of multiple sets of limit seats 11 to prevent the spring from deviating during testing.

[0028] The anti-detachment component is used to further improve the safety of spring testing and prevent the spring from popping out. It includes auxiliary block 12 and anti-detachment block 13. The auxiliary block 12 is fixedly installed on the outer end of the limiting seat 11. The outer wall is designed with an inclined surface. Multiple anti-detachment blocks 13 are installed on the inclined surface of the auxiliary block 12. The anti-detachment blocks 13 are designed with an inclined block. When the spring does not tend to break out, they do not contact the spring and do not affect the normal compression deformation of the spring. When the spring tends to break outward due to uneven force, the anti-detachment blocks 13 can hook the spring and prevent it from leaving the detection area. The sum of the length of the anti-detachment blocks 13 and the width of the auxiliary block 12 is less than the length of the limiting seat 11, ensuring that the spring is not interfered with by the anti-detachment blocks 13 when it is installed and will not hinder the deformation of the spring during the detection process.

[0029] The docking mechanism is used to realize the synchronous adjustment of the spring limiters on the lower pressure plate 3 and the detection seat 4, ensuring that the adjustment range of the two sets of limit seats 11 is consistent. It includes the upper connecting column 14, the lower connecting column 15, the docking groove 16 and the docking block 17. Among them, the upper connecting column 14 is rotatably mounted on the lower pressure plate 3, and the lower connecting column 15 is rotatably mounted on the detection seat 4. The inner ends of both are fixedly connected to the second gear 9 of the corresponding spring limiter. A docking groove 16 is provided at the top of the lower connector 15, and a docking block 17 that is inserted into the docking groove 16 is installed at the bottom of the upper connector 14. Meanwhile, the docking block 17 has a polygonal design with beveled corners at the bottom, which facilitates quick and accurate insertion. When the pressure plate 3 moves down, the docking block 17 is inserted into the docking groove 16, causing the upper connecting post 14 and the lower connecting post 15 to rotate synchronously, thereby driving the two sets of second gears 9 to rotate synchronously, so as to realize the synchronous rotation of the screw 6 of the lower pressure plate 3 and the detection seat 4, ensuring the synchronization of the adjustment of the limit seat 11.

[0030] Through the coordinated operation of the above components, during testing, the spring is first placed on the test seat 4, and the cylinder 2 is activated to move the lower pressure plate 3 downward, completing the insertion of the docking mechanism; the driver 7 is activated, and multiple sets of screws 6 are driven to rotate synchronously through gear transmission, and the transmission seat 10 pushes the limit seat 11 to fit the spring and complete the limit; the cylinder 2 continues to drive the lower pressure plate 3 to compress the spring, and the anti-dislodgement component prevents the spring from popping out, and the test machine control system collects the spring force data in real time; after the test is completed, the cylinder 2 is reset, and the spring can be removed; the entire device realizes the precise limit and safe testing of the spring, avoiding the distortion of test data and safety hazards caused by spring deviation, and is suitable for the batch quality control needs of spring production.

[0031] The working principle of this utility model is as follows: When testing, the spring is placed on the testing seat 4. At the same time, the spring is sleeved on the outside of multiple sets of limiting seats 11. Then, the position of the limiting seats 11 is adjusted according to the spring diameter to ensure stable limiting of the spring. At this time, the cylinder 2 is started to push the lower pressure plate 3 to move downward. During this process, the lower pressure plate 3 will drive the upper connecting column 14 to move downward synchronously until the upper connecting column 14 of the lower pressure plate 3 and the lower connecting column 15 of the testing seat 4 are connected by the connecting block 17 and the connecting groove 16. Then the driver 7 is started, and the driver 7 drives the corresponding screw 6 to rotate; the first gear 8 and the second gear 9 at the inner end of the screw 6 mesh, driving the second gear 9 to rotate; the second gear 9 then drives the first gear 8 of the remaining screws 6 to rotate synchronously, so that the screws 6 of the pressure plate 3 and the screws 6 of the detection seat 4 move synchronously through the docking mechanism. Because the screw 6 is threadedly connected to the transmission seat 10, the transmission seat 10 will slide along the mounting groove 5 during the rotation of the screw 6, thereby pushing the limit seat 11 to move outward synchronously; until the inner wall of multiple sets of limit seats 11 is in contact with the inner wall of the spring, the driver 7 stops and the lateral limit of the spring is completed; at this time, the limit seat 11 of the lower pressure plate 3 and the detection seat 4 are staggered to avoid mutual interference during detection; Because the upper connecting post 14 and the lower connecting post 15 are respectively connected to the corresponding second gear 9; during adjustment, the rotation of the second gear 9 is transmitted to another set of second gear 9 through the upper connecting post 14 and the lower connecting post 15, ensuring that the screw 6 of the lower pressure plate 3 and the detection seat 4 rotate synchronously, and the adjustment range of the limit seat 11 is consistent, so as to avoid uneven force on the spring. After the limit seat 11 is adjusted to the correct position, the top of the spring is in contact with the bottom surface of the lower pressure plate 3. The auxiliary block 12 and the anti-detachment block 13 at the outer end of the limit seat 11 are located inside the spring and do not contact the spring. If the spring tends to pop outward due to force during the test, the anti-detachment block 13 will hook the spring and prevent it from leaving the test area, thus preventing subsequent safety hazards. At the same time, the total width of the anti-detachment block 13 and the auxiliary block 12 is less than the length of the limit seat 11, ensuring that the spring is not interfered with by the anti-detachment block 13 when it is installed normally, and that the compression deformation of the spring is not affected during the test. When testing is required, cylinder 2 is activated, which drives the lower pressure plate 3 to move downward, applying gradually increasing pressure to the spring to simulate the compression stress state of the spring in actual operation. During the pressure application process, the control system of the testing machine collects data from the pressure sensor and displacement sensor (not shown) in real time and records the spring force value corresponding to different compression amounts (this process is known prior art and will not be described in detail). After the test is completed, reverse start cylinder 2 until the lower pressure plate 3 separates from the spring, then the spring can be removed and the test can be prepared for the next test. If the spring model is the same for the next test, there is no need to adjust the limit seat 11, and the spring can be placed directly to start the test.

[0032] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A spring force testing machine for spring production, characterized in that, The device includes a cylinder (2), a lower pressure plate (3), and a detection seat (4). Both the lower pressure plate (3) and the detection seat (4) are equipped with spring limiters, which consist of a screw (6), a driver (7), a first gear (8), a second gear (9), a transmission seat (10), and a limit seat (11). Multiple sets of screws (6) are rotatably installed on both the lower pressure plate (3) and the detection seat (4). The inner end of the screw (6) is equipped with a first gear (8), and the outer end is connected to the driver (7). Multiple sets of first gears (8) are meshed with the second gears (9). The transmission seat (10) is threadedly connected to the screw (6) and slidably connected to the corresponding lower pressure plate (3) and the detection seat (4). The outer end of the transmission seat (10) is equipped with a limit seat (11) for limiting the spring. An auxiliary block (12) is installed on the outer end of the limiting seat (11), and an anti-detachment block (13) is installed on the outer wall of the auxiliary block (12) to further restrict the spring. The lower pressure plate (3) and the detection seat (4) are provided with a docking mechanism for connecting the two sets of spring limiters to ensure that the screws (6) on the lower pressure plate (3) and the detection seat (4) will rotate synchronously.

2. The spring force testing machine for spring production according to claim 1, characterized in that: The outer walls of the pressure plate (3) and the detection seat (4) are provided with multiple sets of mounting grooves (5) corresponding to the screw (6) and the transmission seat (10), and the mounting grooves (5) are slidably connected to the transmission seat (10). The pressure plate (3) and the detection seat (4) are rotatably connected to the driver (7), and the outer end of the driver (7) is located outside the corresponding pressure plate (3) and detection seat (4).

3. A spring force testing machine for spring production according to claim 1, characterized in that: The first gear (8) and the second gear (9) are both bevel gears, and the positions of multiple sets of first gears (8) are staggered and connected by the second gears (9).

4. A spring force testing machine for spring production according to claim 1, characterized in that: The first gear (8) is a bevel gear, and the second gear (9) is a face gear that meshes with multiple sets of first gears (8). The positions of the multiple sets of first gears (8) are staggered and connected by the second gear (9).

5. A spring force testing machine for spring production according to claim 1, characterized in that: The multiple sets of screws (6) installed on the pressure plate (3) and the detection seat (4) are staggered to ensure that the limit seat (11) installed on the pressure plate (3) and the limit seat (11) installed on the detection seat (4) are staggered.

6. A spring force testing machine for spring production according to claim 1, characterized in that: The outer wall of the auxiliary block (12) is designed with a slope, and multiple anti-detachment blocks (13) are installed on the slope. The anti-detachment blocks (13) are designed with a slope and are used to hook the spring when the spring tends to pop outward. The sum of the length of the anti-detachment block (13) and the width of the auxiliary block (12) is less than the length of the limiting seat (11).

7. A spring force testing machine for spring production according to claim 1, characterized in that: The docking mechanism includes an upper connecting column (14) rotatably mounted on the lower pressure plate (3) and a lower connecting column (15) rotatably mounted on the detection seat (4). The inner ends of the upper connecting column (14) and the lower connecting column (15) are respectively connected to the corresponding second gear (9). A docking groove (16) is provided on the top of the lower connecting column (15). A docking block (17) that is inserted into the docking groove (16) is installed at the bottom of the upper connecting column (14). The docking block (17) is polygonal in design, and the bottom corners of the docking block (17) are all beveled.

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