Spring compression detection equipment for mattress production

Abstract

The invention discloses mattress production spring compression detection equipment, and belongs to the technical field of mattress spring detection, the mattress production spring compression detection equipment comprises a detection table, foot pads are fixed at the corners of the lower end of the detection table through screws, supporting rods are fixed at the corners of the upper end of the detection table through screws, and a top plate is fixed at the upper ends of the supporting rods through screws; a U-shaped groove is formed in the side edge of the top plate, a hydraulic cylinder is installed at the upper end of the top plate, a pressing plate is arranged at the output end of the hydraulic cylinder, a PLC is installed at the position, close to one set of supporting rods, of the side edge of the upper end of the detection table, a spring body is placed in the center of the interior of the detection table, and a to-be-detected spring positioning mechanism is arranged in the detection table. According to the spring compression detection device, the to-be-detected spring positioning mechanism is arranged, so that the to-be-detected spring can be conveniently positioned and fixed, and when the to-be-detected spring is subjected to compression detection, a spring body is not easy to deviate and deform, so that the accuracy of spring compression detection data is not influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of mattress spring detection, and in particular relates to a mattress production spring compression detection device. Background Art

[0002] Spring compression testing in mattress production is an important part of ensuring product quality and durability. Mattress production spring compression testing equipment is an instrument specifically used to test the performance of mattress springs. It can simulate the various forces that a mattress is subjected to during use, thereby evaluating its quality and durability.

[0003] The existing spring compression testing equipment for mattress production has the following disadvantages in actual use: 1. When the spring is compressed and tested, the spring is easily deflected, thereby affecting the accuracy of the spring compression test;

[0004] 2. When testing the spring, it is not possible to intuitively monitor the displacement of the spring compression reset, the accuracy of the test data is relatively poor, and the test speed is relatively slow;

[0005] 3. After the springs are tested, it is impossible to automatically classify qualified and unqualified springs, which will increase the labor cost required for later spring classification. Summary of the invention

[0006] To solve the problems raised in the above background technology, the present invention provides a mattress production spring compression detection device, which has the characteristics of conveniently positioning the spring to be detected, conveniently and intuitively monitoring the reset displacement of the spring, and conveniently and automatically classifying the detected springs.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mattress production spring compression testing device, comprising a testing table, a foot pad is fixed at the lower corner of the testing table by screws, a support rod is fixed at the upper corner of the testing table by screws, a top plate is fixed at the upper end of the support rod by screws, a U-shaped groove is opened on the side of the top plate, a hydraulic cylinder is installed on the upper end of the top plate, and a pressure plate is arranged at the output end of the hydraulic cylinder, a PLC controller is installed on the upper side of the testing table near one group of support rods, a spring body is placed at the inner center of the testing table, a spring positioning mechanism to be tested is arranged inside the testing table, a spring reset displacement monitoring mechanism is installed on the upper side of the testing table, and a spring automatic classification mechanism is arranged on the outer side of the testing table near the support rod.

[0008] Furthermore, the spring positioning mechanism to be tested includes a bidirectional screw rod 1, a positioning rod, an arc-shaped positioning groove, a positioning plate, a bidirectional screw rod 2 and a transmission assembly. The transmission assembly is installed on one side of the testing platform by screws, and the side of the transmission assembly is located inside the testing platform and is provided with a bidirectional screw rod 2. The other side of the transmission assembly is located inside the testing platform and is provided with a bidirectional screw rod 1. The outer surfaces of both ends of the bidirectional screw rod 1 and the bidirectional screw rod 2 are threadedly connected with two groups of positioning plates, and the sides of the two groups of positioning plates are provided with arc-shaped positioning grooves. A positioning rod is installed at the inner center of the testing platform, and the spring body is sleeved on the outer surface of the positioning rod.

[0009] Furthermore, the spring positioning mechanism to be tested also includes a slide rail and a pulley. The side of the positioning plate is provided with a pulley. The interior of the testing platform is provided with a slide rail corresponding to the pulley.

[0010] Furthermore, the transmission assembly includes a driven gear, a gear box, a rotating shaft, a connecting gear, a driving gear, a motor and a driving shaft. The gear box is fixed to the side of the testing platform by screws, and the motor is installed on the side of the gear box. The output end of the motor is provided with a driving shaft, and the other end of the driving shaft is provided with a driving gear fixedly connected to the other end of the two-way screw rod one. The side of the driving gear is meshingly connected with a connecting gear, and the connecting gear is rotatably connected to the gear box through a rotating shaft. The other side of the connecting gear is meshingly connected with a driven gear fixedly connected to the other end of the two-way screw rod two.

[0011] Furthermore, the spring return displacement monitoring mechanism includes a detection plate, a guide assembly, a laser displacement sensor, a support plate, bolts and a pressure sensor. A support plate is installed on the upper side of the detection platform, and the support plate and the detection platform are fixedly connected by bolts. A laser displacement sensor is fixed to the top wall of the support plate by screws. The side of the support plate is slidably connected to the detection plate. A guide assembly is arranged on the side of the detection plate inside the support plate, and a pressure sensor is arranged inside the lower end of the pressure plate.

[0012] Furthermore, the guide assembly includes a second pulley and a second slide rail. The side of the detection plate is located inside the support plate and is provided with a second pulley. The side of the support plate is provided with a second slide rail corresponding to the second pulley.

[0013] Furthermore, the pressure sensor is used to monitor the pressure applied by the spring, and convert the pressure signal into an electrical signal to transmit to the PLC controller and control the start and stop of the hydraulic cylinder.

[0014] Furthermore, the laser displacement sensor is used to monitor the displacement generated when the spring body is reset, and convert the monitored displacement signal into an electrical signal and transmit it to the PLC controller, while displaying the detection data of the spring body on the display screen on the side of the PLC controller.

[0015] Furthermore, the spring automatic sorting mechanism includes an electric push rod 1, supporting legs, a qualified product discharge port, a qualified product receiving box, a mounting frame, a slider, a unqualified product receiving box, an electric push rod 2, an unqualified product discharge port and a receiving groove. A mounting frame is provided on the outside of the inspection table, and a supporting leg is provided at the lower end corner of the mounting frame. An electric push rod 1 is installed on one side of the mounting frame, a slider is provided at the output end of the electric push rod 1, and an electric push rod 2 is provided on the other side of the mounting frame. The output end of the electric push rod 1 is fixedly connected to the other side of the slider, and a receiving groove is provided inside the slider. A qualified product discharge port is provided on one side of the lower end of the mounting frame, and an unqualified product discharge port is provided on the other side of the lower end of the mounting frame. A qualified product receiving box is placed below the qualified product discharge port, and a unqualified product receiving box is placed below the unqualified product discharge port.

[0016] Furthermore, a contact switch is installed inside the side of the slider by means of screws, and the contact switch is electrically connected to the PLC controller through a wire.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a spring positioning mechanism to be tested, which can facilitate the positioning and fixing of the spring to be tested, so that when the spring to be tested is subjected to compression testing, the spring body is not easily offset and deformed, thereby affecting the accuracy of the spring compression test data.

[0019] 2. The present invention provides a spring reset displacement monitoring mechanism, which can control the compression of the spring by means of a pressure sensor, and monitor the displacement of the spring compression reset by means of a laser displacement sensor, thereby being able to judge the quality of the spring based on the spring reset displacement.

[0020] 3. The present invention is provided with an automatic spring classification mechanism, which can control the automatic classification of springs according to the detected quality of the springs, thereby avoiding the situation in which unqualified springs are placed in the qualified area for production due to operational errors during manual classification, thereby affecting the quality of the finished mattresses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 A three-dimensional diagram of the spring positioning mechanism to be tested according to the present invention;

[0023] Figure 3 is a three-dimensional diagram of the transmission assembly of the present invention;

[0024] Figure 4 A three-dimensional diagram of a pulley in one position of the present invention;

[0025] Figure 5A three-dimensional diagram of the spring return displacement monitoring mechanism of the present invention;

[0026] Figure 6 A three-dimensional diagram of the position of the pressure sensor of the present invention;

[0027] Figure 7 A three-dimensional diagram of the automatic spring classification mechanism of the present invention;

[0028] Figure 8 It is a working principle diagram of the present invention;

[0029] In the figure: 1. test bench; 2. foot pad; 3. spring positioning mechanism to be tested; 31. two-way screw rod 1; 32. positioning rod; 33. slide rail 1; 34. arc positioning groove; 35. positioning plate; 36. two-way screw rod 2; 37. transmission assembly; 371. driven gear; 372. gear box; 373. rotating shaft; 374. connecting gear; 375. driving gear; 376. motor; 377. driving shaft; 38. pulley 1; 4. spring reset displacement monitoring mechanism; 41. test plate; 42. guide assembly; 421. pulley 2; 422. slide rail 2; 43. Laser displacement sensor; 44. Support plate; 45. Bolt; 46. Pressure sensor; 5. Support rod; 6. Top plate; 7. Hydraulic cylinder; 8. Press plate; 9. Automatic spring sorting mechanism; 91. Electric push rod one; 92. Support leg; 93. Qualified product discharge port; 94. Qualified product receiving box; 95. Mounting frame; 96. Slider; 97. Unqualified product receiving box; 98. Electric push rod two; 99. Unqualified product discharge port; 910. Receiving slot; 911. Contact switch; 10. U-shaped slot; 11. PLC controller; 12. Spring body. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-8The present invention provides the following technical solutions: A spring compression testing device for mattress production, comprising a testing platform 1, a foot pad 2 is fixed at the lower corner of the testing platform 1 by screws, a support rod 5 is fixed at the upper corner of the testing platform 1 by screws, a top plate 6 is fixed at the upper end of the support rod 5 by screws, a U-shaped groove 10 is opened on the side of the top plate 6, a hydraulic cylinder 7 is installed on the upper end of the top plate 6, and a pressing plate 8 is arranged at the output end of the hydraulic cylinder 7, a PLC controller 11 is installed on the upper side of the testing platform 1 near one group of support rods 5, a spring body 12 is placed at the inner center of the testing platform 1, a positioning mechanism 3 for the spring to be tested is arranged inside the testing platform 1, a spring reset displacement monitoring mechanism 4 is installed on the upper side of the testing platform 1, and a spring automatic classification mechanism 9 is arranged on the outer side of the testing platform 1 near the support rod 5.

[0033] The present invention further comprises a spring positioning mechanism 3 to be tested, comprising a bidirectional screw rod 1 31, a positioning rod 32, an arc-shaped positioning groove 34, a positioning plate 35, a bidirectional screw rod 2 36 and a transmission assembly 37. The transmission assembly 37 is installed on one side of the test platform 1 by means of screws. The side of the transmission assembly 37 is located inside the test platform 1 and is provided with a bidirectional screw rod 2 36. The other side of the transmission assembly 37 is located inside the test platform 1 and is provided with a bidirectional screw rod 1 31. The outer surfaces of both ends of the bidirectional screw rod 1 31 and the bidirectional screw rod 2 36 are threadedly connected with two groups of positioning plates 35. The sides of the two groups of positioning plates 35 are provided with arc-shaped positioning grooves 34. The positioning rod 32 is installed at the inner center of the test platform 1. The spring body 12 is sleeved on the outer surface of the positioning rod 32.

[0034] By adopting the above technical solution, when the spring body 12 is subjected to compression testing, the spring body 12 is first sleeved on the surface of the positioning rod 32, and then the transmission assembly 37 is used to control the synchronous rotation of the bidirectional screw rod 1 31 and the bidirectional screw rod 2 36. The synchronous rotation of the bidirectional screw rod 1 31 and the bidirectional screw rod 2 36 can drive the two groups of positioning plates 35 to approach each other. When the two groups of positioning plates 35 approach each other, they can cooperate with the arc-shaped positioning groove 34 on the side to position the spring body 12, so as to perform compression testing on the spring body 12.

[0035] In the present invention, the spring positioning mechanism 3 to be tested further comprises a slide rail 33 and a pulley 38. The side of the positioning plate 35 is provided with a pulley 38. The interior of the testing platform 1 is provided with a slide rail 33 corresponding to the pulley 38.

[0036] By adopting the above technical solution, when the positioning plates 35 are close to each other, the pulley 38 will be driven to slide inside the slide rail 33, thereby improving the stability and smoothness of the sliding process of the positioning plates 35.

[0037] The present invention further comprises a transmission assembly 37 including a driven gear 371, a gear box 372, a rotating shaft 373, a connecting gear 374, a driving gear 375, a motor 376 and a driving shaft 377. The gear box 372 is fixed to the side of the detection platform 1 by screws, and the motor 376 is installed on the side of the gear box 372. The output end of the motor 376 is provided with a driving shaft 377, and the other end of the driving shaft 377 is provided with a driving gear 375 fixedly connected to the other end of the two-way screw rod 31. The side of the driving gear 375 is meshedly connected with a connecting gear 374. The connecting gear 374 is rotationally connected to the gear box 372 through the rotating shaft 373. The other side of the connecting gear 374 is meshedly connected with a driven gear 371 fixedly connected to the other end of the two-way screw rod 36.

[0038] By adopting the above technical solution, the motor 376 on the side of the gear box 372 is turned on, and the motor 376 drives the driving shaft 377 to rotate through the output end. The driving shaft 377 rotates to drive the driving gear 375 to rotate, and the driving gear 375 rotates to drive the two-way screw rod 1 31 to rotate. The driving gear 375 rotates and drives the connecting gear 374 to rotate at the same time. The connecting gear 374 rotates to drive the driven gear 371 to rotate. The driven gear 371 rotates to drive the two-way screw rod 2 36 to rotate synchronously.

[0039] When the present embodiment is in use, when the compression test is performed on the spring body 12, the spring body 12 is first sleeved on the surface of the positioning rod 32, and then the motor 376 on the side of the gear box 372 is turned on. The motor 376 drives the driving shaft 377 to rotate through the output end. The driving shaft 377 rotates to drive the driving gear 375 to rotate. The driving gear 375 rotates to drive the two-way screw rod 1 31 to rotate. The driving gear 375 rotates and drives the connecting gear 374 to rotate at the same time. The connecting gear 374 rotates to drive the driven gear 371 to rotate. The driven gear 371 rotates to drive the two-way screw rod 2 36 to rotate synchronously. The two-way screw rod 1 31 and the two-way screw rod 2 36 rotate synchronously to drive the two groups of positioning plates 35 to approach each other. The two groups of positioning plates 35 approach each other to cooperate with the arc-shaped positioning groove 34 on the side to position the spring body 12, so as to perform compression test on the spring body 12. When the positioning plates 35 approach each other, they will drive the pulley 1 38 to slide inside the slide rail 1 33, thereby improving the stability and smoothness of the sliding process of the positioning plates 35.

[0040] Example 2

[0041] The difference between this embodiment and the embodiment 1 is that the spring return displacement monitoring mechanism 4 includes a detection plate 41, a guide assembly 42, a laser displacement sensor 43, a support plate 44, a bolt 45 and a pressure sensor 46. The support plate 44 is installed on the upper side of the detection platform 1. The support plate 44 and the detection platform 1 are fixedly connected by bolts 45. The laser displacement sensor 43 is fixed to the top wall of the support plate 44 by screws. The side of the support plate 44 is slidably connected to the detection plate 41. The side of the detection plate 41 is provided with a guide assembly 42 inside the support plate 44. The lower end of the pressure plate 8 is provided with a pressure sensor 46.

[0042] By adopting the above technical solution, when the spring body 12 is subjected to compression testing, the testing plate 41 is placed on the upper end of the spring body 12. In order to prevent the deadweight of the testing plate 41 from affecting the testing data of the spring body 12, the deadweight data of the testing plate 41 can be included in the PLC controller 11, and then the hydraulic cylinder 7 is opened. The hydraulic cylinder 7 drives the pressure plate 8 to descend through the output end, and then cooperates with the pressure sensor 46 to monitor the pressure on the spring body 12. When the pressure plate 8 descends, it drives the testing plate 41 to descend and drives the spring body 12 to compress. At this time, the laser displacement sensor 43 calculates the distance from the testing plate 41 at this time. When the spring body 12 is reset, the mass of the spring body 12 can be calculated based on the distance when the spring body 12 is reset.

[0043] In the present invention, the guide assembly 42 includes a second pulley 421 and a second slide rail 422. The side of the detection plate 41 is located inside the support plate 44 and is provided with a second pulley 421. The side of the support plate 44 is provided with a second slide rail 422 corresponding to the second pulley 421.

[0044] By adopting the above technical solution, when the detection plate 41 is lifted or lowered, the second pulley 421 will be driven to slide inside the second slide rail 422, thereby improving the stability of the lifting process of the detection plate 41.

[0045] In the present invention, the pressure sensor 46 is used to monitor the pressure applied by the spring, and convert the pressure signal into an electrical signal to be transmitted to the PLC controller 11 and control the hydraulic cylinder 7 to start and stop.

[0046] By adopting the above technical solution, the pressure sensor 46 can monitor the compression pressure of the spring body 12, so that after the spring body 12 is compressed to a specified pressure, the hydraulic cylinder 7 can be automatically controlled to close.

[0047] In the present invention, the laser displacement sensor 43 is used to monitor the displacement generated when the spring body 12 is reset, and converts the monitored displacement signal into an electrical signal and transmits it to the PLC controller 11, and at the same time displays the detection data of the spring body 12 on the display screen on the side of the PLC controller 11.

[0048] By adopting the above technical solution, the laser displacement sensor 43 can detect the displacement change of the spring body 12 when it is reset, so as to determine the quality of the spring body 12 .

[0049] When the present embodiment is in use, when the compression test is performed on the spring body 12, the test plate 41 is placed on the upper end of the spring body 12. In order to prevent the deadweight of the test plate 41 from affecting the test data of the spring body 12, the deadweight data of the test plate 41 can be included in the PLC controller 11, and then the hydraulic cylinder 7 is opened. The hydraulic cylinder 7 drives the pressure plate 8 to descend through the output end, and then cooperates with the pressure sensor 46 to monitor the pressure on the spring body 12. When the pressure plate 8 descends, it drives the test plate 41 to descend and drives the spring body 12 to compress. At this time, the laser displacement sensor 43 calculates the distance from the test plate 41 at this time. When the spring body 12 is reset, the mass of the spring body 12 can be calculated based on the distance when the spring body 12 is reset.

[0050] Example 3

[0051] The present embodiment is different from the above embodiment in that: the spring automatic classification mechanism 9 includes an electric push rod 1 91, a support leg 92, a qualified product discharge port 93, a qualified product receiving box 94, a mounting frame 95, a slider 96, a unqualified product receiving box 97, an electric push rod 2 98, an unqualified product discharge port 99 and a receiving groove 910, a mounting frame 95 is arranged on the outer side of the inspection table 1, a support leg 92 is arranged at the lower end corner of the mounting frame 95, an electric push rod 1 91 is installed on one side of the mounting frame 95, and an electric push rod 1 99 is installed on the other side of the mounting frame 95. 1 is provided with a slider 96 at the output end, and an electric push rod 2 98 is provided on the other side of the mounting frame 95. The output end of the electric push rod 2 98 is fixedly connected to the other side of the slider 96. A receiving groove 910 is provided inside the slider 96. A qualified product discharge port 93 is provided on one side of the lower end of the mounting frame 95, and a defective product discharge port 99 is provided on the other side of the lower end of the mounting frame 95. A qualified product receiving box 94 is placed below the qualified product discharge port 93, and a defective product receiving box 97 is placed below the defective product discharge port 99.

[0052] By adopting the above technical scheme, the displacement change of the spring body 12 reset is calculated by the laser displacement sensor 43 to judge the quality of the spring, and the spring body 12 after the inspection is placed in the receiving groove 910 inside the slider 96. When the spring body 12 is qualified, the PLC controller 11 receives the signal and issues an instruction to control the electric push rod 1 91 to contract and the electric push rod 2 98 to stretch. At this time, the slider 96 moves to the position of the qualified product discharge port 93 until the receiving groove 910 is aligned with the qualified product discharge port 93. At this time, the qualified spring body 12 will fall into the qualified product receiving box 94. When the spring body 12 is unqualified, the PLC controller 11 receives the signal and issues an instruction to control the electric push rod 1 91 to stretch and the electric push rod 2 98 to contract. At this time, the slider 96 moves to the position of the unqualified product discharge port 99 until the receiving groove 910 is aligned with the unqualified product discharge port 99. At this time, the unqualified spring body 12 will fall into the unqualified product receiving box 97, thereby realizing the classification of the spring body 12.

[0053] In the present invention, a contact switch 911 is installed inside the side of the slider 96 by screws, and the contact switch 911 is electrically connected to the PLC controller 11 through a wire.

[0054] By adopting the above technical solution, the setting of the contact switch 911 can automatically control the electric push rod 1 91 and the electric push rod 2 98 to reset when the slider 96 moves to one side of the mounting bracket 95, so as to classify the subsequent spring body 12.

[0055] When the present embodiment is in use, the laser displacement sensor 43 is used to calculate the displacement change of the spring body 12 when it is reset to determine the quality of the spring, and the spring body 12 after the inspection is placed in the receiving groove 910 inside the slider 96. When the spring body 12 is qualified, the PLC controller 11 receives the signal and issues a command to control the electric push rod 1 91 to contract and the electric push rod 2 98 to stretch. At this time, the slider 96 moves to the position of the qualified product discharge port 93 until the receiving groove 910 is aligned with the qualified product discharge port 93. At this time, the qualified spring body 12 will fall into the qualified product receiving box 94. When the spring body 12 is not When qualified, the PLC controller 11 receives the signal and sends out instructions to control the electric push rod 1 91 to stretch and the electric push rod 2 98 to contract. At this time, the slider 96 moves to the position of the unqualified product discharge port 99 until the receiving groove 910 is aligned with the unqualified product discharge port 99. At this time, the unqualified spring body 12 will fall into the interior of the unqualified product receiving box 97, thereby realizing the classification of the spring body 12. The setting of the contact switch 911 can enable the slider 96 to move to one side of the mounting bracket 95, and automatically control the electric push rod 1 91 and the electric push rod 2 98 to reset, so as to classify the subsequent spring bodies 12.

[0056] The PLC controller 11 in the present invention is an existing disclosed technology, and the selected model is Siemens S7-300.

[0057] The laser displacement sensor 43 in the present invention is an existing disclosed technology, and the selected model is the Univi USLA-07 series.

[0058] The pressure sensor 46 in the present invention is an existing disclosed technology, and the selected model is MEIKONGMIK-P400.

[0059] Working principle and use process of the present invention: When the present invention is used, when the spring body 12 is compressed and tested, the spring body 12 is first sleeved on the surface of the positioning rod 32, and then the motor 376 on the side of the gear box 372 is turned on. The motor 376 drives the driving shaft 377 to rotate through the output end, and the driving shaft 377 rotates to drive the driving gear 375 to rotate, and the driving gear 375 rotates to drive the two-way screw rod 1 31 to rotate, and the driving gear 375 rotates and drives the connecting gear 374 to rotate at the same time, and the connecting gear 374 rotates to drive the driven gear 371 to rotate, and the driven gear 371 rotates to drive the two-way screw rod 2 36 to rotate synchronously, and the two-way screw rod 1 31 and the two-way screw rod 2 36 rotate synchronously to drive the two sets of positioning plates 35 to approach each other, and the two sets of positioning plates When the plates 35 are close to each other, the spring body 12 can be positioned in cooperation with the arc-shaped positioning groove 34 on the side, so as to perform compression detection on the spring body 12. When the positioning plates 35 are close to each other, the pulley 38 will be driven to slide inside the slide rail 33, thereby improving the stability and smoothness of the sliding process of the positioning plate 35. When the spring body 12 is compressed and tested, the detection plate 41 is placed on the upper end of the spring body 12. In order to prevent the self-weight of the detection plate 41 from affecting the detection data of the spring body 12, the self-weight data of the detection plate 41 can be included in the PLC controller 11, and then the hydraulic cylinder 7 is turned on. The hydraulic cylinder 7 drives the pressure plate 8 to descend through the output end, and then cooperates with the pressure sensor 46 to monitor the pressure on the spring body 12. When the pressure plate 8 descends, When the spring body 12 is reset, the mass of the spring body 12 can be calculated based on the distance when the spring body 12 is reset; the mass of the spring can be determined by calculating the displacement change of the reset of the spring body 12 through the laser displacement sensor 43, and the spring body 12 after the inspection is placed in the receiving groove 910 inside the slider 96. When the spring body 12 is qualified, the PLC controller 11 receives the signal and sends a command to control the electric push rod 1 91 to contract and the electric push rod 2 98 to stretch. At this time, the slider 96 moves to the position of the qualified product discharge port 93 until the receiving groove 910 and the qualified product discharge port are aligned. 93 are aligned, the qualified spring body 12 will fall into the qualified product receiving box 94. When the spring body 12 is unqualified, the PLC controller 11 receives the signal and sends out instructions to control the electric push rod 1 91 to stretch and the electric push rod 2 98 to contract. At this time, the slider 96 moves to the position of the unqualified product discharge port 99 until the receiving groove 910 is aligned with the unqualified product discharge port 99. At this time, the unqualified spring body 12 will fall into the unqualified product receiving box 97, thereby realizing the classification of the spring body 12. The setting of the contact switch 911 can make the slider 96 move to one side of the mounting bracket 95, and can automatically control the electric push rod 1 91 and the electric push rod 2 98 to reset, so as to classify the subsequent spring bodies 12.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mattress production spring compression testing device, comprising a testing platform (1), wherein a foot pad (2) is fixed at a lower corner of the testing platform (1) by screws, a support rod (5) is fixed at an upper corner of the testing platform (1) by screws, a top plate (6) is fixed at the upper end of the support rod (5) by screws, a U-shaped groove (10) is provided on the side of the top plate (6), a hydraulic cylinder (7) is installed at the upper end of the top plate (6), and a pressure plate (8) is provided at the output end of the hydraulic cylinder (7), a PLC controller (11) is installed at a position near one group of support rods (5) on the upper side of the testing platform (1), and a spring body (12) is placed at the inner center of the testing platform (1), characterized in that: A spring positioning mechanism (3) to be tested is arranged inside the testing platform (1), a spring reset displacement monitoring mechanism (4) is installed on the upper side of the testing platform (1), and a spring automatic classification mechanism (9) is arranged on the outer side of the testing platform (1) near the support rod (5).

2. A mattress production spring compression detection device according to claim 1, characterized in that: The spring positioning mechanism (3) to be tested comprises a bidirectional screw rod 1 (31), a positioning rod (32), an arc-shaped positioning groove (34), a positioning plate (35), a bidirectional screw rod 2 (36) and a transmission assembly (37); the transmission assembly (37) is installed on one side of the testing platform (1) by means of screws; the side of the transmission assembly (37) is located inside the testing platform (1) and is provided with a bidirectional screw rod 2 (36); the other side of the transmission assembly (37) is located inside the testing platform (1) and is provided with a bidirectional screw rod 1 (31); the outer surfaces of both ends of the bidirectional screw rod 1 (31) and the bidirectional screw rod 2 (36) are threadedly connected with two groups of positioning plates (35); the sides of the two groups of positioning plates (35) are provided with arc-shaped positioning grooves (34); the positioning rod (32) is installed at the center position inside the testing platform (1); and the spring body (12) is sleeved on the outer surface of the positioning rod (32).

3. A mattress production spring compression detection device according to claim 2, characterized in that: The spring positioning mechanism (3) to be tested also includes a slide rail (33) and a pulley (38), a pulley (38) is arranged on the side of the positioning plate (35), and a slide rail (33) corresponding to the pulley (38) is opened inside the testing platform (1).

4. A mattress production spring compression testing device according to claim 2, characterized in that: The transmission assembly (37) comprises a driven gear (371), a gear box (372), a rotating shaft (373), a connecting gear (374), a driving gear (375), a motor (376) and a driving shaft (377). The gear box (372) is fixed to the side of the detection platform (1) by screws. The motor (376) is installed on the side of the gear box (372). The output end of the motor (376) is provided with a driving shaft (377). The other end of the driving shaft (377) is provided with a driving gear (375) fixedly connected to the other end of the bidirectional screw rod (31). The side of the driving gear (375) is meshedly connected with a connecting gear (374). The connecting gear (374) and the gear box (372) are rotationally connected via the rotating shaft (373). The other side of the connecting gear (374) is meshedly connected with a driven gear (371) fixedly connected to the other end of the bidirectional screw rod (36).

5. A mattress production spring compression testing device according to claim 1, characterized in that: The spring return displacement monitoring mechanism (4) comprises a detection plate (41), a guide assembly (42), a laser displacement sensor (43), a support plate (44), a bolt (45) and a pressure sensor (46); the support plate (44) is installed on the upper side of the detection platform (1); the support plate (44) and the detection platform (1) are fixedly connected by bolts (45); the laser displacement sensor (43) is fixed to the top wall of the support plate (44) by screws; the side of the support plate (44) is slidably connected to the detection plate (41); the side of the detection plate (41) is provided with a guide assembly (42) inside the support plate (44); and the pressure sensor (46) is provided inside the lower end of the pressure plate (8).

6. A mattress production spring compression testing device according to claim 5, characterized in that: The guide assembly (42) comprises a second pulley (421) and a second slide rail (422); the side edge of the detection plate (41) is located inside the support plate (44) and is provided with a second pulley (421); the side edge of the support plate (44) is provided with a second slide rail (422) corresponding to the second pulley (421).

7. A mattress production spring compression testing device according to claim 5, characterized in that: The pressure sensor (46) is used to monitor the pressure applied by the spring, and convert the pressure signal into an electrical signal, which is transmitted to the PLC controller (11) and controls the start and stop of the hydraulic cylinder (7).

8. A mattress production spring compression testing device according to claim 5, characterized in that: The laser displacement sensor (43) is used to monitor the displacement generated when the spring body (12) is reset, and convert the monitored displacement signal into an electrical signal and transmit it to the PLC controller (11), while displaying the detection data of the spring body (12) on a display screen on the side of the PLC controller (11).

9. A mattress production spring compression testing device according to claim 1, characterized in that: The spring automatic classification mechanism (9) comprises an electric push rod 1 (91), a support leg (92), a qualified product discharge port (93), a qualified product receiving box (94), a mounting frame (95), a slide block (96), a unqualified product receiving box (97), an electric push rod 2 (98), an unqualified product discharge port (99) and a receiving groove (910). The mounting frame (95) is arranged on the outer side of the inspection platform (1), a support leg (92) is arranged at the lower end corner of the mounting frame (95), an electric push rod 1 (91) is installed on one side of the mounting frame (95), and the output end of the electric push rod 1 (91) is provided. A slide block (96) is provided, and an electric push rod 2 (98) is provided on the other side of the mounting frame (95). The output end of the electric push rod 2 (98) is fixedly connected to the other side of the slide block (96). A receiving groove (910) is provided inside the slide block (96). A qualified product discharge port (93) is provided on one side of the lower end of the mounting frame (95), and a defective product discharge port (99) is provided on the other side of the lower end of the mounting frame (95). A qualified product receiving box (94) is provided below the qualified product discharge port (93), and a defective product receiving box (97) is provided below the defective product discharge port (99).

10. A mattress production spring compression testing device according to claim 9, characterized in that: A contact switch (911) is installed inside the side of the slider (96) by means of screws, and the contact switch (911) is electrically connected to the PLC controller (11) by means of a wire.

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