Elastic endurance test equipment for press-in type combined spring screw

Abstract

The utility model discloses elastic endurance testing equipment for a press-in type combined spring screw. The elastic endurance testing equipment comprises a base and a testing mechanism, fixing bases distributed front and back are arranged on the upper surface of the base, transmission shafts are rotationally connected between the left ends and the right ends of the two fixing bases, the two transmission shafts are in transmission connection through a conveying belt, and evenly-distributed positioning blocks adhere to the outer side face of the conveying belt. A screening mechanism is arranged in the middle of the upper surface of the base. The testing mechanism comprises a pressure sensor, a pressing column, a balancing weight and a first limiting plate, and the upper side of the right end of the front side face of the supporting plate is connected with the first limiting plate through a bolt. According to the utility model, the elastic force and the rebound height of the press-in type combined spring screw under the corresponding pressure can be tested in batches and can be screened, so that the press-in type combined spring screw can be conveniently and quickly tested.

Description

Technical Field

[0001] The utility model relates to the technical field of precision hardware processing, in particular to elastic endurance testing equipment for press-in combined spring screws. Background Art

[0002] The spring combination screw is a mechanical connector composed of several parts, including a nail body, a spring, a press pin, etc. Its function is to connect two or more parts and can maintain the fastening force when subjected to end force or large vibration. It has a simple structure, easy installation and long service life.

[0003] After the spring combination screw is assembled, the assembly position of the spring may be deviated due to the worker's assembly error or due to the quality problem of the spring itself, so the spring combination screw needs to be tested. However, the existing testing equipment can only test one product at a time, the detection efficiency is low, and it can only be tested, and workers need to screen according to the results later. Therefore, an elastic endurance testing device for a press-in combination spring screw is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an elastic endurance testing device for a press-in combination spring screw, which can batch test the elastic force and rebound height of the press-in combination spring screws under the test pressure and perform screening, so as to facilitate rapid testing of the press-in combination spring screws and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elastic endurance test device for a press-in combined spring screw, comprising a base and a test mechanism;

[0006] The upper surface of the base is provided with front and rear distributed fixed seats, the left and right ends of the two fixed seats are rotatably connected with a transmission shaft, the two transmission shafts are connected by a conveyor belt transmission, the outer side of the conveyor belt is bonded with evenly distributed positioning blocks, the rear side of the upper surface of the base is provided with a support plate, and the middle part of the upper surface of the base is provided with a screening mechanism;

[0007] The testing mechanism comprises a pressure sensor, a pressure column, a counterweight block and a limit plate 1, the upper side of the right end of the front side surface of the support plate is connected to the limit plate 1 by bolts, the front end of the limit plate 1 is internally slidably connected with a pressure column, the lower end of the pressure column is provided with a pressure sensor, the upper end of the pressure column is fixedly connected with a counterweight block, and the pressure sensor corresponds to the upper and lower positions of the vertically adjacent positioning blocks;

[0008] Wherein: it also includes a single-chip microcomputer, which is arranged on the upper surface of the base, the input end of the single-chip microcomputer is electrically connected to an external power supply, and the pressure sensor is bidirectionally electrically connected to the single-chip microcomputer.

[0009] Furthermore, the testing mechanism also includes a height sensor, a mounting plate is fixedly connected to the middle part of the rear fixing seat, the mounting plate is located on the left side of the pressure column, and the right side of the mounting plate is fixedly connected to the height sensor. The height sensor corresponds to the upper and lower positions of the vertically adjacent positioning blocks. The height sensor is bidirectionally electrically connected to the single-chip microcomputer to detect the rebound height of the press-in combination spring screw.

[0010] Furthermore, the testing mechanism also includes a motor, a connecting rod, a rotating shaft, a cam and a limit plate 2. The left side of the front side surface of the support plate is rotatably connected to the rotating shaft, and a cam is provided on the middle fixed sleeve of the rotating shaft. The left upper end of the front side surface of the support plate is connected to the limit plate 2 by bolts. The front end of the limit plate 2 is internally slidably connected to a sliding column, and the sliding column corresponds to the upper and lower positions of the cam. A connecting rod is fixedly connected between the sliding column and the pressure column, and the connecting rod is located at the lower end of the limit plate 2. The rear side surface of the support plate is fixedly connected to the motor, and the output shaft of the motor is fixedly connected to the rear end of the rotating shaft. The input end of the motor is electrically connected to the output end of the single-chip microcomputer to realize the lifting and lowering of the pressure sensor, which is convenient for testing the product.

[0011] Furthermore, the testing mechanism also includes a driven wheel, a driving wheel and a sliding rod. The front end fixed sleeve of the rotating shaft is provided with a driving wheel, and the outer side of the driving wheel is fixedly connected with a sliding rod. The front end fixed sleeve of the left transmission shaft is provided with a driven wheel, and the driven wheel is provided with evenly distributed rectangular grooves. The center lines of the rectangular grooves are tangent to the motion trajectory of the top end of the sliding rod. The outer side surface of the driving wheel is slidably connected to the surface of the arc groove of the driven wheel to realize the interval transmission of the transmission belt.

[0012] Further, the screening mechanism includes a cylinder, a pillar and a push plate, the middle part of the upper surface of the base is connected with the pillar by bolts, the upper end of the pillar is fixedly connected with the cylinder, the telescopic end of the cylinder is fixedly connected with the push plate, the push plate corresponds to the front and rear positions of the positioning block adjacent to the front side, the push plate is located on the left side of the height sensor, a limiting groove is provided on the front side surface of the front fixed seat, a collecting frame 2 is placed inside the limiting groove, the collecting frame 2 corresponds to the front and rear positions of the push plate, the air inlet of the cylinder is connected to an external air pump (, to screen out unqualified products.

[0013] Furthermore, a collecting frame is placed on the left side of the base, and a guide plate is fixedly connected to the left ends of the two fixing seats. The guide plate is tangent to the outer side surface of the conveyor belt to collect qualified products.

[0014] Furthermore, a display screen is provided on the upper surface of the base, and an input end of the display screen is electrically connected to an output end of the single-chip microcomputer to display the detection result.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The worker puts the tested pressed-in combination spring screw into the middle of the positioning block on the right side of the pressure column in sequence, turns on the motor through the single-chip computer, and the output shaft of the motor drives the rotating shaft to rotate. The rotating shaft drives the cam and the driving wheel to rotate clockwise. The driving wheel drives the sliding rod to rotate clockwise, and the top of the sliding rod enters the rectangular groove on the right side of the driven wheel, driving the driven wheel to rotate counterclockwise. The driven wheel drives the transmission shaft on the left to rotate, driving the conveyor belt to rotate, and the positioning block moves to the left. The pressed-in combination spring screw reaches the lower end of the pressure column. At the same time, the cam pushes up the sliding column and leaves the sliding column. The sliding column drives the pressure column to move synchronously through the connecting rod. When the pressure column slides upward, the pressed-in combination spring screw moves to the lower end of the pressure column. When the pressed-in combination spring screw stops moving, the pressure column slides down to the pressure column. The force sensor presses down the upper end of the press-in combination spring screw, and the press-in combination spring screw generates elastic force to push up the pressure sensor. The pressure sensor measures the elastic force and feeds it back to the single-chip microcomputer. The single-chip microcomputer records the elastic force and displays it on the display screen. The rotating shaft continues to rotate, and the pressure column leaves the press-in combination spring screw. The press-in combination spring screw moves forward to the lower end of the height sensor. The height sensor measures the relative distance between the upper end of the press-in combination spring screw and the height sensor and feeds it back to the single-chip microcomputer. The single-chip microcomputer records the relative distance and displays it on the display screen. The single-chip microcomputer compares the test data of the press-in combination spring screw with the qualified data to determine whether it is qualified. The worker only needs to put the product in for automatic detection, which greatly reduces the workload of the worker.

[0017] 2. If the pressed-in combination spring screw is unqualified, the rotating shaft continues to rotate, and the pressed-in combination spring screw reaches the front end of the push plate. The single-chip microcomputer controls the external air pump to start, and the telescopic end of the cylinder pushes the push plate forward to push the unqualified pressed-in combination spring screw into the inside of the collection frame 2. If the product is qualified, the cylinder does not move, and the pressed-in combination spring screw passes through the guide plate and falls into the inside of the collection frame 1, completing the screening. The pressed-in combination spring screws are automatically screened with high accuracy to improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] In the figure: 1 base, 2 testing mechanism, 201 driven wheel, 202 pressure sensor, 203 pressure column, 204 height sensor, 205 counterweight, 206 driving wheel, 207 sliding rod, 208 limit plate 1, 209 motor, 210 connecting rod, 211 rotating shaft, 212 cam, 213 limit plate 2, 3 screening mechanism, 31 cylinder, 32 pillar, 33 push plate, 4 collection frame 1, 5 limit slot, 6 collection frame 2, 7 display screen, 8 single chip microcomputer, 9 fixed seat, 10 positioning block, 11 conveyor belt, 12 guide plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 The present embodiment provides an elastic endurance test device for a press-in combination spring screw, including a base 1 and a test mechanism 2; it also includes a single-chip microcomputer 8, which is arranged on the upper surface of the base 1, the input end of the single-chip microcomputer 8 is electrically connected to an external power supply, and the pressure sensor 202 is bidirectionally electrically connected to the single-chip microcomputer 8.

[0022] Among them, the upper surface of the base 1 is provided with front and rear distributed fixed seats 9, and the left and right ends of the two fixed seats 9 are rotatably connected with a transmission shaft, and the two transmission shafts are connected by a conveyor belt 11. The outer side of the conveyor belt 11 is bonded with evenly distributed positioning blocks 10, and the rear side of the upper surface of the base 1 is provided with a support plate, and the middle part of the upper surface of the base 1 is provided with a screening mechanism 3. A collecting frame 4 is placed on the left side of the base 1, and the left ends of the two fixed seats 9 are fixedly connected with a guide plate 12, and the guide plate 12 is tangent to the outer side of the conveyor belt 11. The upper surface of the base 1 is provided with a display screen 7, and the input end of the display screen 7 is electrically connected to the output end of the single-chip computer 8.

[0023] Among them, the screening mechanism 3 includes a cylinder 31, a pillar 32 and a push plate 33. The middle part of the upper surface of the base 1 is connected with the pillar 32 by bolts, the upper end of the pillar 32 is fixedly connected with the cylinder 31, and the telescopic end of the cylinder 31 is fixedly connected with the push plate 33. The push plate 33 corresponds to the front and rear positions of the positioning block 10 adjacent to the front side. The push plate 33 is located on the left side of the height sensor 204. A limiting groove 5 is set on the front side surface of the front fixed seat 9. A collection frame 2 6 is placed inside the limiting groove 5. The collection frame 2 6 corresponds to the front and rear positions of the push plate 33. The air inlet of the cylinder 31 is connected to an external air pump.

[0024] Among them, the test mechanism 2 includes a pressure sensor 202, a pressure column 203, a counterweight 205 and a limit plate 208. The upper side of the right end of the front side of the support plate is connected to the limit plate 208 by bolts. The front end of the limit plate 208 is internally slidably connected with the pressure column 203. The lower end of the pressure column 203 is provided with a pressure sensor 202. The upper end of the pressure column 203 is fixedly connected with the counterweight 205. The pressure sensor 202 corresponds to the upper and lower positions of the vertically adjacent positioning block 10; the test mechanism 2 also includes a height sensor 204, the middle part of the rear fixed seat 9 is fixedly connected with a mounting plate, the mounting plate is located on the left side of the pressure column 203, and the right side of the mounting plate is fixedly connected with a height sensor 204, the height sensor 204 corresponds to the upper and lower positions of the vertically adjacent positioning block 10, and the height sensor 204 is bidirectionally electrically connected to the single-chip microcomputer 8; the test mechanism 2 also includes a motor 209, a connecting rod 210, a rotating shaft 211, a cam 212 and a limit plate 213, the left side of the front side of the support plate is rotatably connected with the rotating shaft 211, the rotating shaft 2 A cam 212 is fixedly mounted in the middle of the support plate 11, and the upper left end of the front side of the support plate is connected to the second limiting plate 213 by bolts. The front end of the second limiting plate 213 is internally slidably connected with a sliding column, and the sliding column corresponds to the upper and lower positions of the cam 212. A connecting rod 210 is fixedly connected between the sliding column and the pressure column 203, and the connecting rod 210 is located at the lower end of the second limiting plate 213. A motor 209 is fixedly connected to the rear side of the support plate, and the output shaft of the motor 209 is fixedly connected to the rear end of the rotating shaft 211. The input end of the motor 209 is electrically connected to the rear end of the rotating shaft 211. The output end of the single-chip microcomputer 8 is connected; the test mechanism 2 also includes a driven wheel 201, a driving wheel 206 and a slide bar 207. The front end fixed sleeve of the rotating shaft 211 is provided with a driving wheel 206, and the outer side of the driving wheel 206 is fixedly connected with the slide bar 207. The front end fixed sleeve of the left transmission shaft is provided with a driven wheel 201. The driven wheel 201 is provided with evenly distributed rectangular grooves. The center lines of the rectangular grooves are tangent to the motion trajectory of the top end of the slide bar 207. The outer side surface of the driving wheel 206 is slidably connected to the surface of the arc groove of the driven wheel 201.

[0025] The working principle of the utility model is as follows:

[0026] The worker puts the tested pressed-in combination spring screw into the middle of the positioning block 10 on the right side of the pressure column 203 in sequence, and turns on the motor 209 through the single-chip computer 8. The output shaft of the motor 209 drives the rotating shaft 211 to rotate, and the rotating shaft 211 drives the cam 212 and the driving wheel 206 to rotate clockwise. The driving wheel 206 drives the sliding rod 207 to rotate clockwise, and the top of the sliding rod 207 enters the inside of the rectangular groove on the right side of the driven wheel 201, driving the driven wheel 201 to rotate counterclockwise. The driven wheel 201 drives the transmission shaft on the left to rotate, driving the conveyor belt 11 to rotate, and the positioning block 10 moves to the left. The pressed-in combination spring screw reaches the lower end of the pressure column 203. At the same time, the cam 212 pushes up the sliding column and leaves the sliding column. The sliding column drives the pressure column 203 to move synchronously through the connecting rod 210. When the pressure column 203 slides upward, the pressed-in combination spring screw moves toward the pressure column 2 03 moves, when the lower end of the pressed-in combination spring screw stops moving, the pressure column 203 slides down to the pressure sensor 202 to press the upper end of the pressed-in combination spring screw, and the pressed-in combination spring screw generates elastic force to push up the pressure sensor 202, and the pressure sensor 202 measures the elastic force and feeds it back to the single-chip computer 8, the single-chip computer 8 records the elastic force and displays it through the display screen 7, the rotating shaft 211 continues to rotate, the pressure column 203 leaves the pressed-in combination spring screw, and the pressed-in combination spring screw moves forward to the lower end of the height sensor 204, the height sensor 204 measures the relative distance between the upper end of the pressed-in combination spring screw and the height sensor 204 and feeds it back to the single-chip computer 8, the single-chip computer 8 records the relative distance and displays it through the display screen 7, the single-chip computer 8 compares the test data of the pressed-in combination spring screw with the qualified data to determine whether it is qualified;

[0027] If the pressed-in combination spring screw is unqualified, the rotating shaft 211 continues to rotate, and the pressed-in combination spring screw reaches the front end of the push plate 33. The single-chip microcomputer 8 controls the external air pump to start, and the telescopic end of the cylinder 31 pushes the push plate 33 forward to push the unqualified pressed-in combination spring screw into the interior of the collection frame 2 6. If the product is qualified, the cylinder 31 does not move, and the pressed-in combination spring screw passes through the guide plate 12 and falls into the interior of the collection frame 1 4, completing the screening.

[0028] It is worth noting that the single chip microcomputer 8 disclosed in the above embodiments can select STM32F103C8T6, the pressure sensor 202 can select MPM280 pressure sensor, the height sensor 204 can select HG-05 height measurement sensor, the motor 209 can select 110ZYT54 reduction motor, and the single chip microcomputer 8 controls the pressure sensor 202, the height sensor 204, the motor 209, the display screen 7 and the external air pump using methods commonly used in the prior art.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An elastic endurance test device for a press-in combined spring screw, characterized in that: It comprises a base (1) and a testing mechanism (2); The upper surface of the base (1) is provided with fixed seats (9) distributed front and rear, and a transmission shaft is rotatably connected between the left and right ends of the two fixed seats (9), and the two transmission shafts are connected by a transmission belt (11), and the outer side of the conveyor belt (11) is bonded with evenly distributed positioning blocks (10), and a support plate is provided on the rear side of the upper surface of the base (1), and a screening mechanism (3) is provided in the middle of the upper surface of the base (1); The testing mechanism (2) comprises a pressure sensor (202), a pressure column (203), a counterweight (205) and a limit plate (208); the upper side of the right end of the front side surface of the support plate is connected to the limit plate (208) by bolts; the front end of the limit plate (208) is internally slidably connected to the pressure column (203); the lower end of the pressure column (203) is provided with a pressure sensor (202); the upper end of the pressure column (203) is fixedly connected to the counterweight (205); the pressure sensor (202) corresponds to the upper and lower positions of the vertically adjacent positioning blocks (10); The device further comprises a single-chip microcomputer (8), wherein the single-chip microcomputer (8) is arranged on the upper surface of the base (1), an input end of the single-chip microcomputer (8) is electrically connected to an external power supply, and the pressure sensor (202) is bidirectionally electrically connected to the single-chip microcomputer (8).

2. The elastic endurance testing device of a press-in combined spring screw according to claim 1, characterized in that: The testing mechanism (2) also includes a height sensor (204), a mounting plate fixedly connected to the middle of the rear fixing seat (9), the mounting plate being located on the left side of the pressure column (203), a height sensor (204) fixedly connected to the right side of the mounting plate, the height sensor (204) corresponding to the upper and lower positions of the vertically adjacent positioning blocks (10), and the height sensor (204) being bidirectionally electrically connected to the single-chip microcomputer (8).

3. The elastic endurance testing device of a press-in combined spring screw according to claim 1, characterized in that: The testing mechanism (2) further comprises a motor (209), a connecting rod (210), a rotating shaft (211), a cam (212) and a second limiting plate (213); the left side of the front side surface of the support plate is rotatably connected to the rotating shaft (211); the middle part of the rotating shaft (211) is fixedly sleeved with a cam (212); the upper left end of the front side surface of the support plate is connected to the second limiting plate (213) by bolts; the front end of the second limiting plate (213) is internally slidably connected to a sliding column; the sliding column corresponds to the cam (212) in upper and lower positions; a connecting rod (210) is fixedly connected between the sliding column and the pressure column (203); the connecting rod (210) is located at the lower end of the second limiting plate (213); the rear side surface of the support plate is fixedly connected to the motor (209); the output shaft of the motor (209) is fixedly connected to the rear end of the rotating shaft (211); the input end of the motor (209) is electrically connected to the output end of the single-chip computer (8).

4. The elastic endurance testing device of a press-in combined spring screw according to claim 3, characterized in that: The testing mechanism (2) further comprises a driven wheel (201), a driving wheel (206) and a sliding rod (207); the front end fixed sleeve of the rotating shaft (211) is provided with the driving wheel (206); the outer side of the driving wheel (206) is fixedly connected with the sliding rod (207); the front end fixed sleeve of the left transmission shaft is provided with the driven wheel (201); the driven wheel (201) is provided with evenly distributed rectangular grooves, the center lines of the rectangular grooves are all tangent to the movement trajectory of the top end of the sliding rod (207); the outer side surface of the driving wheel (206) is slidably connected to the surface of the arc groove of the driven wheel (201).

5. The elastic endurance testing device of a press-in combined spring screw according to claim 2, characterized in that: The screening mechanism (3) comprises a cylinder (31), a support (32) and a push plate (33). The middle part of the upper surface of the base (1) is connected to the support (32) by bolts. The upper end of the support (32) is fixedly connected to the cylinder (31). The telescopic end of the cylinder (31) is fixedly connected to the push plate (33). The front and rear positions of the push plate (33) and the positioning block (10) adjacent to the front side correspond. The push plate (33) is located on the left side of the height sensor (204). A limiting groove (5) is provided on the front side surface of the fixed seat (9) on the front side. A collecting frame 2 (6) is placed inside the limiting groove (5). The collecting frame 2 (6) corresponds to the front and rear positions of the push plate (33). The air inlet of the cylinder (31) is connected to an external air pump.

6. The elastic endurance testing device of a press-in combined spring screw according to claim 1, characterized in that: A collecting frame (4) is placed on the left side of the base (1), and a guide plate (12) is fixedly connected to the left ends of the two fixing seats (9), and the guide plate (12) is tangent to the outer side surface of the conveyor belt (11).

7. The elastic endurance testing device of a press-in combined spring screw according to claim 1, characterized in that: A display screen (7) is provided on the upper surface of the base (1), and an input end of the display screen (7) is electrically connected to an output end of the single-chip computer (8).

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