Spring tensile capacity detection device for spring processing

Abstract

The utility model relates to the technical field of spring detection, in particular to a spring tensile capacity detection device for spring processing, which comprises a detection platform, a fixed seat is fixedly connected onto the detection platform, a dynamometer is fixedly mounted on the fixed seat, a screw rod is rotatably connected onto the detection platform, a movable seat is in threaded connection onto the screw rod, and the movable seat is in threaded connection with the dynamometer. Fixed sleeves are fixedly mounted on the fixed seat and the movable seat; a positioning ring is fixedly connected to the interior of each fixing sleeve, a plurality of sliding rods are connected to the positioning rings through a plurality of reset springs, and a clamping plate is fixedly connected to one end of each sliding rod. According to the utility model, adaptive adjustment can be conveniently carried out according to the size and the diameter of the spring, so that the springs with different specifications, namely different diameters, can be fixed and subjected to tension detection, the limitation in use is small, and the use of the detection device is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of spring testing technology, and in particular to a spring tensile strength testing device for spring processing. Background Technology

[0002] With the continuous development of society and the continuous progress of science and technology, the technology related to spring testing is also constantly improving. Springs are mechanical parts that work by utilizing elasticity. They can deform under the action of external force and return to their original shape after the external force is removed. During the processing of springs, tensile strength testing is usually carried out. Generally, after the spring is fixed, a tensile testing device used for spring production is used for testing.

[0003] Currently, the testing devices used for spring tensile strength are not easily adaptable to the size and diameter of the spring, making it impossible to test the tensile strength of springs of different specifications. This results in significant limitations in their use and hinders the application of the testing devices. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology: the current testing devices for the tensile strength of springs are not convenient to be adapted to the size and diameter of the spring, which makes it impossible to test the tensile strength of springs of different specifications. The device has great limitations in use and is not conducive to the use of testing devices. Therefore, a spring tensile strength testing device for spring processing is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spring tensile strength testing device for spring processing includes a testing platform, a fixed base fixedly connected to the testing platform, a force measuring device fixedly installed on the fixed base, a lead screw rotatably connected to the testing platform, a movable base threadedly connected to the lead screw, and a fixed sleeve fixedly installed on both the fixed base and the movable base.

[0007] Each of the fixed sleeves has a positioning ring fixedly connected inside. Multiple sliding rods are connected to the positioning rings via multiple return springs. One end of each sliding rod is fixedly connected to a clamping plate. A sliding assembly is provided on the positioning ring. The sliding assembly includes multiple pressing blocks. Each pressing block has a pressing port for connecting the sliding rod. The cross-section of the pressing port is a right-angled trapezoid. A rotating ring is threadedly installed inside each of the fixed sleeves. The rotating ring is connected to the multiple pressing blocks via multiple fixed rods.

[0008] Preferably, each of the rotating rings has an annular groove on one side surface, and the end of each fixed rod away from the extrusion block is slidably connected to the annular groove.

[0009] Preferably, each positioning ring has multiple limiting grooves arranged in a circular array, and each extrusion block has a limiting strip fixedly connected to one side, with the limiting strip and the limiting grooves being slidably connected.

[0010] Preferably, each of the rotating rings is fixedly connected to a pull rod, one end of which is slidably connected to a slide bar with an L-shaped cross-section. A pin is fixedly connected to the slide bar. Each of the fixed sleeves has multiple slots on its end face. The pull rod has a through groove for connecting the slide bar, and the through groove has a rectangular cross-section.

[0011] Preferably, the detection platform has a groove for mounting the lead screw, the movable seat is slidably connected to the groove, and a servo motor is fixedly mounted on the detection platform.

[0012] Preferably, a protective cover is rotatably connected to the detection platform, and the cross-section of the protective cover is U-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Pushing the slider causes it to rotate. Under the transmission action of the pull rod, the rotating ring rotates simultaneously and is threadedly connected to the fixed sleeve. During the rotation of the rotating ring, each extrusion block moves along the positioning ring. As the inclined inner wall of each extrusion port moves against the end face of the corresponding slide rod, each slide rod extends into the positioning ring simultaneously. During the movement of each clamping plate, one end of the spring to be tested can be clamped and fixed. Similarly, the other end of the spring to be tested can also be clamped and fixed. This allows for adaptive adjustment according to the size and diameter of the spring, enabling the fixing and tensile testing of springs of different specifications and diameters. It has fewer limitations in use and is beneficial to the use of the testing device. Attached Figure Description

[0015] Figure 1 This is a front structural diagram of a spring tensile strength testing device for spring processing proposed in this utility model;

[0016] Figure 2 This is a partial internal structural diagram of a spring tensile strength testing device for spring processing proposed in this utility model;

[0017] Figure 3 This is a partial side view of the fixing sleeve and positioning ring in this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the fixed sleeve and rotating ring on the side of this utility model.

[0019] In the diagram: 1. Detection platform, 2. Fixed seat, 3. Force gauge, 4. Fixed sleeve, 5. Protective cover, 6. Lead screw, 7. Clamping plate, 8. Positioning ring, 9. Moving seat, 10. Extrusion block, 11. Slide rod, 12. Limiting strip, 13. Slide bar, 14. Pull rod, 15. Insert shaft, 16. Return spring, 17. Fixed rod, 18. Rotating ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0022] Reference Figures 1-4 A spring tensile strength testing device for spring processing includes a testing platform 1, a fixed base 2 fixedly connected to the testing platform 1, a force measuring device 3 fixedly installed on the fixed base 2 (the force measuring device 3 has been disclosed in document CN116519454A, and its working principle is not described in detail), a lead screw 6 rotatably connected to the testing platform 1, a movable base 9 threadedly connected to the lead screw 6, a fixed sleeve 4 fixedly installed on both the fixed base 2 and the movable base 9, a positioning ring 8 fixedly connected inside each fixed sleeve 4, a plurality of slide rods 11 connected to the positioning ring 8 by a plurality of return springs 16, a clamping plate 7 fixedly connected to one end of each slide rod 11, a sliding assembly provided on the positioning ring 8, the sliding assembly including a plurality of extrusion blocks 10, each extrusion block 10 having an extrusion port for connecting the slide rod 11, the cross-section of the extrusion port being a right trapezoid, a rotating ring 18 threadedly installed inside each fixed sleeve 4, the rotating ring 18 being connected to the plurality of extrusion blocks 10 by a plurality of fixed rods 17.

[0023] Each rotating ring 18 has an annular groove on one side surface. The end of each fixed rod 17 away from the extrusion block 10 is slidably connected to the annular groove. Each positioning ring 8 has multiple limiting grooves arranged in an annular array. Each extrusion block 10 has a limiting strip 12 fixedly connected to one side. The limiting strip 12 is slidably connected to the limiting groove. When the rotating ring 18 and the fixed sleeve 4 are threadedly connected, the rotating ring 18 will move outward along the fixed sleeve 4. Since one end of each fixed rod 17 is rotatably installed in the annular groove and cannot be detached, and the other end of each fixed rod 17 is fixedly connected to multiple extrusion blocks 10 respectively, the limiting strip 12 can prevent the extrusion blocks 10 from swinging. During the rotation of the rotating ring 18, each extrusion block 10 and the fixed rod 17 will move along the positioning ring 8, and the extrusion blocks 10 and the fixed rod 17 will not rotate.

[0024] Each rotating ring 18 is fixedly connected to a pull rod 14. One end of the pull rod 14 is slidably connected to a slide bar 13 with an L-shaped cross-section. A pin 15 is fixedly connected to the slide bar 13. Each fixed sleeve 4 has multiple slots on its end face. The pull rod 14 has a through groove for connecting the slide bar 13. The through groove has a rectangular cross-section. Pushing the slide bar 13 causes it to slide in the rectangular through groove until one end of the pin 15 on the slide bar 13 engages with the corresponding slot. This effectively prevents the slide bar 13, pull rod 14, and rotating ring 18 from rotating arbitrarily.

[0025] The testing platform 1 has a groove for mounting the lead screw 6. The movable seat 9 is slidably connected to the groove. A servo motor is fixedly mounted on the testing platform 1. The drive end of the servo motor is fixedly connected to the lead screw 6. When the lead screw 6 rotates under the drive of the servo motor, the movable seat 9 moves along the lead screw 6 and slides relative to the groove. This allows for the stretching of one end of the spring to be tested, which is clamped in the positioning ring 8. The force gauge 3 measures the tensile force of the stretched spring, thereby detecting the tensile force of the spring and facilitating the testing of its tensile strength. A protective cover 5 is rotatably connected to the testing platform 1. The protective cover 5 has a U-shaped cross-section. The protective cover 5 can shield and protect the spring from breakage, thus protecting the safety of the testing personnel.

[0026] In this invention, during use, the two ends of the spring to be tested (not shown) are placed inside the two positioning rings 8 respectively. Then, a slider 13 is pulled outward to move it away from the fixed sleeve 4 until the insert shaft 15 disengages from the slot. Then, the slider 13 is pushed to rotate. Under the transmission action of the pull rod 14, the rotating ring 18 rotates simultaneously and is threadedly connected to the fixed sleeve 4. The rotating ring 18 will then move outward along the fixed sleeve 4. Since one end of each fixed rod 17 is rotatably installed in the annular groove and cannot be detached, and the other end of each fixed rod 17 is fixedly connected to multiple pressing blocks 10 respectively, the limiting strip 12 can prevent the pressing blocks 10 from swinging. During the rotation of the rotating ring 18, each pressing block 10 will move along the positioning ring 8. Furthermore, it will not rotate. As the inclined inner walls of each extrusion port move against the end face of the corresponding slide rod 11, each slide rod 11 will simultaneously extend into the positioning ring 8. Since the two ends of each return spring 16 are fixedly connected to the positioning ring 8 and the corresponding slide rod 11 respectively, the return spring 16 deforms. During the movement of each clamping plate 7, one end of the spring to be tested can be clamped and fixed. After the fixing is completed, push the slide bar 13 again until the insertion shaft 15 engages with the corresponding slot. Similarly, the other end of the spring to be tested can also be clamped and fixed. This makes it convenient to make adaptive adjustments according to the size and diameter of the spring, so that springs of different specifications, i.e., different diameters, can be tested for tension. The limitations in use are small, which is beneficial to the use of the testing device.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spring tensile strength testing device for spring processing, comprising a testing platform (1), characterized in that, A fixed seat (2) is fixedly connected to the detection platform (1), a force measuring device (3) is fixedly installed on the fixed seat (2), a lead screw (6) is rotatably connected to the detection platform (1), a movable seat (9) is threadedly connected to the lead screw (6), and a fixed sleeve (4) is fixedly installed on both the fixed seat (2) and the movable seat (9). Each of the fixed sleeves (4) is fixedly connected to a positioning ring (8). Multiple slide rods (11) are connected to the positioning ring (8) by multiple return springs (16). One end of each slide rod (11) is fixedly connected to a clamping plate (7). A sliding assembly is provided on the positioning ring (8). The sliding assembly includes multiple extrusion blocks (10). Each extrusion block (10) has an extrusion port for connecting the slide rod (11). The cross-section of the extrusion port is a right trapezoid. A rotating ring (18) is threadedly installed inside each of the fixed sleeves (4). The rotating ring (18) is connected to the multiple extrusion blocks (10) by multiple fixed rods (17).

2. The spring tensile strength testing device for spring processing according to claim 1, characterized in that, Each of the rotating rings (18) has an annular groove on one side surface, and the end of each fixing rod (17) away from the extrusion block (10) is slidably connected to the annular groove.

3. The spring tensile strength testing device for spring processing according to claim 1, characterized in that, Each of the positioning rings (8) has multiple limiting grooves arranged in a ring array, and each of the extrusion blocks (10) has a limiting strip (12) fixedly connected to one side, and the limiting strip (12) and the limiting groove are slidably connected.

4. The spring tensile strength testing device for spring processing according to claim 1, characterized in that, Each of the rotating rings (18) is fixedly connected to a pull rod (14), one end of which is slidably connected to a slide bar (13) with an L-shaped cross-section. A pin shaft (15) is fixedly connected to the slide bar (13). Each of the fixed sleeves (4) has multiple slots on its end face. The pull rod (14) has a through groove for connecting the slide bar (13), and the through groove has a rectangular cross-section.

5. The spring tensile strength testing device for spring processing according to claim 1, characterized in that, The detection platform (1) has a groove for installing the lead screw (6), the movable seat (9) is slidably connected to the groove, and a servo motor is fixedly installed on the detection platform (1).

6. The spring tensile strength testing device for spring processing according to claim 1, characterized in that, A protective cover (5) is rotatably connected to the detection platform (1), and the cross-section of the protective cover (5) is U-shaped.

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