CN210464851U

CN210464851U - Tester for coefficient of resilience of sponge

Info

Publication number: CN210464851U
Application number: CN201921927192.5U
Authority: CN
Inventors: 赵辉
Original assignee: Quanzhou Delandis Home Technology Co ltd
Current assignee: Quanzhou Delandis Home Technology Co ltd
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-05-05
Anticipated expiration: 2029-11-09

Abstract

The utility model relates to a sponge coefficient of restitution tester, which comprises a steel ball, a photoelectric sensor, a cover, a through pipe, an electromagnet, a winding device and a console; the cover covers the upper end opening of the through pipe, and the sample to be detected is placed at the lower end opening of the through pipe; releasing the steel ball through an electromagnet, enabling the steel ball to pass through a photoelectric sensor, recording the time interval of the first contact and the second contact of the steel ball with a tested sample through the photoelectric sensor, transmitting data to a console, and displaying the rebound rate of the steel ball through calculation by the console; after the first test is finished, the steel ball is restored to the initial height by the winding device; the problem of impurity such as dust fall into the siphunculus and need manually take out the steel ball is solved, have the advantage that improves test result degree of accuracy and test convenience.

Description

Tester for coefficient of resilience of sponge

Technical Field

The utility model relates to an elasticity test instrument field especially relates to a sponge coefficient of restitution apparatus.

Background

Sponges, which are porous materials having properties such as water absorption, elasticity, and air permeability, are widely used for manufacturing mattresses, seat cushions, back cushions, and the like; with the improvement of the manufacturing level and the quality of life of people, people have certain requirements on the property of the elasticity of the sponge in the sponge product, so the coefficient of resilience of the sponge needs to be measured before manufacturing.

Chinese patent that the bulletin number is CN204130019U discloses a ball rebound experiment appearance that falls, it includes the steel ball, a pedestal, the guide pillar, the siphunculus, the magnet seat, carry appearance platform and control cabinet, the equal vertical fixation in top surface of base of guide pillar and siphunculus, the top surface of base is seted up one just to the orificial opening of siphunculus, it installs under the opening to carry appearance platform, the magnet seat reciprocates and installs in the guide pillar, be equipped with at least two sets of photoelectric detection contact switch on the inner wall of the siphunculus of being connected with the base top surface, the test surface is constituteed to multiunit photoelectric detection contact switch, the steel ball triggers arbitrary a set of photoelectric detection contact switch through this plane, detect signal transmission to control cabinet, the rebound rate of.

However, the pipe wall of the through pipe of the falling ball rebound tester is provided with an opening for manually taking out the steel ball, the upper port of the through pipe is open, and impurities such as dust and the like easily fall into the through pipe, so that the sensitivity of the photoelectric sensor is influenced, and the accuracy of a detection result is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sponge coefficient of restitution apparatus has the advantage that improves the testing result degree of accuracy.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a sponge coefficient of restitution apparatus, includes steel ball, photoelectric sensor, siphunculus, bottom plate and backup pad, characterized by: a control console is fixed on the bottom plate; the supporting plate is fixed above the bottom plate; the through pipe is vertically fixed on the support plate, the support plate is provided with a through hole, and the through hole is opposite to the lower pipe orifice of the through pipe; the supporting plate is provided with a cavity for placing the photoelectric sensor; an electromagnet for sucking and releasing the steel ball is arranged in the through pipe, and one end of the electromagnet is connected with a conductive wire; a winding device is arranged above the through pipe and comprises a coil cylinder for winding and unwinding a conductive wire and a motor for driving the coil cylinder to rotate; the upper end of the through pipe is provided with a closed end, and the closed end is provided with a through hole only for a conductive wire to pass through.

By adopting the technical scheme, the power supply of the electromagnet and the motor of the winding device are controlled by the console; the electromagnet has magnetism after being electrified, so that the steel ball can be firmly attracted; the test is started, the power supply of the electromagnet is closed, no additional force is applied to the steel ball after the electromagnet is powered off, and the steel ball does free-fall motion, so that the accuracy of the test result is ensured; the steel ball freely falls down to complete one-time test, after the test is finished, the motor is controlled by the console to rotate the coil cylinder, the electromagnet is put down to the bottom of the through pipe, the electromagnet sucks the steel ball and then rises to the initial height, and after each test is finished, the steel ball automatically returns to the initial height, so that the test convenience is improved; locate the siphunculus with the electro-magnet in, utilize the coiling mechanism to receive and release the electro-magnet, consequently the siphunculus need not to open and goes up mouth of pipe and siphunculus pipe wall and need not to set up the opening, and the blind end is with the mouth of pipe cover on the siphunculus, has avoided impurity such as dust to fall into the siphunculus, can protect photoelectric sensor betterly, has guaranteed photoelectric sensor's sensitivity, reaches the purpose that improves the test result degree.

The utility model discloses further set up to: the closed end is a cover which can be detachably fixed.

By adopting the technical scheme, the cover is detachable, so that the through pipe and the device in the through pipe are convenient to maintain and repair.

The utility model discloses further set up to: the cover comprises a ring-shaped element and a limiting rod in threaded connection with the ring-shaped element, the ring-shaped element is detachably and fixedly connected with the pipe opening on the through pipe, and the limiting rod is provided with a through hole only for a conducting wire to pass through; the limiting rod is provided with a contact switch which blocks the moving path of the electromagnet and is used for closing the motor.

By adopting the technical scheme, the rotary limiting rod ascends or descends relative to the thread of the ring-shaped piece, and the limiting rod limits the maximum ascending height of the electromagnet; the initial falling height of the steel ball is 500mm or 460mm specified in American standard ASTM D3574, national standard GB/T6670-2008 and ISO8307-2007 test standards, and the initial falling height of the steel ball is limited by adjusting the height of the limiting rod; the electromagnet touches a contact switch arranged on the limiting rod in the lifting process, the motor is turned off, the coil drum stops rotating, and the electromagnet automatically stops lifting movement.

The utility model discloses further set up to: the bottom plate is fixed with the bracing piece, the motor is fixed in the bracing piece, the coil bobbin is worn to establish and is fixed with the pivot, and pivot fixed connection is in the output shaft of motor, and the pivot rotates with the bracing piece to be connected, and the pivot cover is equipped with the damping circle of hugging closely with the bracing piece lateral wall.

By adopting the technical scheme, the motor drives the rotating shaft to rotate, so that the coil cylinder is driven to rotate, after the electromagnet touches the contact switch, the motor is turned off, the damping ring limits the relative motion of the rotating shaft and the supporting rod, the self-locking of the motor is ensured, the coil cylinder does not rotate any more, and the stability of the electromagnet is improved.

The utility model discloses further set up to: the lower end face of the limiting rod is provided with a groove for clamping and embedding the power supply magnet, the axis of the groove is located at the axis line of the through pipe, and the lowest point of the steel ball is located on the horizontal plane where the lower end face of the limiting rod is located.

By adopting the technical scheme, the electromagnet is positioned at the axial lead of the through pipe, so that the steel ball is ensured to fall along the axial lead, the steel ball is prevented from contacting the inner wall of the through pipe in the falling process, and the accuracy of the test is ensured; the lowest point of the steel ball is located on the horizontal plane of the lower end face of the limiting rod, the horizontal plane of the lower end face of the limiting rod is the initial horizontal plane of the steel ball falling, the distance between the lower end face of the limiting rod and the lower end face of the supporting plate is adjusted to be 500mm or 460mm, the initial height of the steel ball falling is 500mm or 460mm, the falling height of the steel ball is in accordance with American standard ASTM D3574, national standard GB/T6670-2008 and ISO8307-2007 test standards, and the accuracy of the test result is improved.

The utility model discloses further set up to: the lower end face of the electromagnet is a concave spherical surface, and the spherical surface of the steel ball is attached to the lower end face of the electromagnet.

By adopting the technical scheme, the lower end surface of the electromagnet is a concave spherical surface, so that the contact area between the electromagnet and the steel ball is increased, the stability of the electromagnet for sucking the steel ball is improved, and the steel ball is prevented from falling off before the electromagnet is powered off to influence a test result.

The utility model discloses further set up to: the through pipe wall is transparent and is marked with scale marks for indicating the height.

By adopting the technical scheme, the scale marks indicate the initial falling height of the steel ball, the falling motion of the steel ball is observed through the wall of the transparent through pipe, whether the steel ball contacts the inner wall of the through pipe in the falling and rebounding processes is observed, and the accuracy of a test result is ensured.

The utility model discloses further set up to: an object stage for placing a sample to be measured is arranged right below the through hole, and a lifting assembly for adjusting the height of the object stage is arranged on the bottom plate; and a pressure sensor for detecting the pressure of the sample to be detected and the supporting plate is arranged in the cavity of the supporting plate.

Adopt above-mentioned technical scheme, will be surveyed the sample and place in the objective table, adjust the lift of objective table through lifting unit, pressure sensor detects the pressure that is surveyed sample and backup pad production, when the control cabinet shows the pressure value that detects, stops to adjust the objective table, guarantees to be surveyed sample and backup pad zero clearance, reaches the purpose that improves the test result degree of accuracy.

The utility model discloses further set up to: the photoelectric sensor is annular in shape.

By adopting the technical scheme, when the steel ball passes through the photoelectric sensor, the photoelectric sensor is annular, so that the steel ball can be sensed rapidly and accurately in an all-around manner by 360 degrees, and the accuracy of a test result is ensured.

To sum up, the utility model discloses following beneficial effect has:

1. the falling steel balls are automatically picked up, so that impurities such as dust and the like are reduced from falling into the through pipe, the photoelectric sensor is protected, the sensitivity of the photoelectric sensor is ensured, and the accuracy of a detection result and the convenience of testing are improved;

2. the pressure generated by the tested sample and the supporting plate is detected, the gap between the tested sample and the supporting plate is ensured, and the accuracy of the detection result is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a cross-sectional view of a lower nozzle of the through pipe of the present embodiment;

fig. 3 is a cross-sectional view of the upper nozzle of the through pipe of the present embodiment.

In the figure, 1, a bottom plate; 2. a pillar; 3. a support plate; 4. a console; 5. pipe passing; 6. a cover; 61. an annular member; 62. a rubber ring; 63. a limiting rod; 7. a winding device; 71. a bobbin; 72. a motor; 73. a rotating shaft; 74. a damping ring; 8. an object stage; 9. a lifting assembly; 91. a lifting column; 92. a lifting sleeve; 93. a handle; 10. a port; 11. a cavity; 12. a pressure sensor; 13. a photosensor; 14. a groove; 15. an electromagnet; 16. a steel ball; 17. a contact switch; 18. a through hole; 19. scale lines; 20. a support rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The sponge coefficient of restitution apparatus, as shown in figure 1, includes steel ball 16, through pipe 5, bottom plate 1 and supporting plate 3; the supporting plate 3 and the bottom plate 1 are fixedly connected with a strut 2, and the bottom plate 1 is fixedly provided with a control console 4; the through pipe 5 is vertically fixed on the support plate 3, the support plate 3 is provided with a through hole 10, and the through hole 10 is over against the lower pipe orifice of the through pipe 5 and has the same shape and size as the lower pipe orifice; an electromagnet 15 for sucking and releasing a steel ball 16 is arranged in the through pipe 5, and the center of the upper part of the electromagnet 15 is connected with a conductive wire; a winding device 7 for winding and releasing the conducting wire is arranged above the through pipe 5.

As shown in fig. 1 and 2, the bottom plate 1 is provided with an object stage 8 facing the through hole 10 and used for placing a sample to be measured and a lifting assembly 9 for adjusting the height of the object stage 8; the lifting assembly 9 comprises a lifting column 91 fixed on the bottom plate 1, a lifting sleeve 92 sleeved on the lifting column 91 and a handle 93 fixed on the outer peripheral wall of the lifting sleeve 92, the handle 93 is used for rotating the lifting sleeve 92, the lifting column 91 is in threaded connection with the lifting sleeve 92, and the objective table 8 is fixed on the lifting sleeve 92;

an annular cavity 11 is formed in the bottom of the supporting plate 3, a pressure sensor 12 and an annular photoelectric sensor 13 are arranged in the cavity 11, the pressure sensor 12 is used for detecting the pressure of a detected sample and the supporting plate 3, and the photoelectric sensor 13 is used for detecting the time interval of the first contact and the second contact of the steel ball 16 with the detected sample; during the use, will be surveyed the sample and place in objective table 8, adjust the lift of lift cover 92 through handle 93, when control cabinet 4 shows the pressure value, stop adjusting lift cover 92, guarantee to be surveyed the sample and do not have the clearance with backup pad 3.

As shown in fig. 3, the through pipe 5 is provided with a cover 6 for sealing the upper pipe orifice, the cover 6 comprises a ring member 61, a rubber ring 62 convexly arranged on the lower end surface of the ring member 61, and a limiting rod 63 in threaded connection with the ring member 61; the ring-shaped part 61 is detachably fixed on an upper pipe orifice of the through pipe 5 by the joint of the outer diameter of the rubber ring 62 and the inner wall of the through pipe 5, a through hole 18 for only passing a conducting wire is vertically formed in the limiting rod 63, a groove 14 for clamping and embedding a power supply magnet 15 is formed in the center of the lower end face of the limiting rod 63, and a contact switch 17 for closing the motor 72 is arranged at the bottom of the groove 14; the lower end face of the electromagnet 15 is a concave spherical surface, the spherical surface of the steel ball 16 is attached to the lower end face of the electromagnet 15, and the lowest point of the steel ball 16 is located on the horizontal plane where the lower end face of the limiting rod 63 is located.

As shown in fig. 1 and 3, the supporting rod 20 is fixed on the bottom plate 1, the winding device 7 includes a bobbin 71, a motor 72, a rotating shaft 73 and a damping ring 74 made of rubber, the bobbin 71 is used for winding and unwinding a conductive wire, the rotating shaft 73 is fixedly disposed on the bobbin 71, the motor 72 is fixed on the supporting rod 20, an output shaft of the motor 72 is fixed to the rotating shaft 73, the rotating shaft 73 is rotatably connected to the supporting rod 20, the rotating shaft 73 is sleeved with the damping ring 74 tightly attached to a side wall of the supporting rod 20, the damping ring 74 limits relative movement between the rotating shaft 73 and the supporting rod 20, and the motor 72 is self-locked after being turned off.

Principle of operation (see fig. 1, 2 and 3):

firstly, a sample to be measured is placed on the objective table 8, and the height of the lifting sleeve 92 is adjusted through the handle 93, so that the distance between the sample to be measured and the supporting plate 3 is adjusted; the pressure sensor 12 detects the pressure generated by the sample to be detected and the supporting plate 3, and transmits data to the console 4, and when the console 4 displays the detected pressure value, the lifting sleeve 92 stops adjusting, so that no gap exists between the sample to be detected and the supporting plate 3;

determining the initial falling height of the steel ball 16 required by the test, and then adjusting the limiting rod 63 to enable the lower end face of the limiting rod 63 to be flush with the 460mm or 500mm scale mark; releasing the steel ball 16, enabling the steel ball 16 to fall through the photoelectric sensor 13, recording the time interval of the first contact and the second contact of the steel ball 16 with the tested sample by the photoelectric sensor 13, transmitting data to the console 4, and displaying the rebound rate of the steel ball 16 by the console 4 through calculation;

after the test is finished, the motor 72 is controlled by the console 4 to rotate the coil cylinder 71, the electromagnet 15 is put down, the electromagnet 15 sucks the steel ball 16 and then ascends, the electromagnet 15 touches the contact switch 17, the motor 72 is turned off, the coil cylinder 71 stops winding the conductive wire, and the steel ball 16 returns to the initial height for the next test.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims

1. The utility model provides a sponge coefficient of restitution apparatus, includes steel ball (16), photoelectric sensor (13), siphunculus (5), bottom plate (1) and backup pad (3), characterized by: a control console (4) is fixed on the bottom plate (1); the supporting plate (3) is fixed above the bottom plate (1); the through pipe (5) is vertically fixed on the support plate (3), the support plate (3) is provided with a through hole (10), and the through hole (10) is opposite to the lower pipe orifice of the through pipe (5); the supporting plate (3) is provided with a cavity (11) for placing the photoelectric sensor (13); an electromagnet (15) for sucking and releasing the steel ball (16) is arranged in the through pipe (5), and one end of the electromagnet (15) is connected with a conductive wire; a winding device (7) is arranged above the through pipe (5), and the winding device (7) comprises a coil cylinder (71) for winding and unwinding a conductive wire and a motor (72) for driving the coil cylinder (71) to rotate; the upper end of the through pipe (5) is provided with a closed end, and the closed end is provided with a through hole (18) through which a conductive wire passes.

2. The sponge coefficient of restitution apparatus of claim 1, wherein: the closed end is a cover (6) which can be fixed in a detachable way.

3. The sponge coefficient of restitution apparatus of claim 2, wherein: the cover (6) comprises a ring-shaped part (61) and a limiting rod (63) in threaded connection with the ring-shaped part (61), the ring-shaped part (61) is detachably and fixedly connected with the pipe orifice of the through pipe (5), and the limiting rod (63) is provided with a through hole (18) through which a conducting wire only passes; the limiting rod (63) is provided with a contact switch (17) which is blocked on the moving path of the electromagnet (15) and is used for closing the motor (72).

4. The sponge coefficient of restitution apparatus of claim 3, wherein: the bottom plate (1) is fixed with bracing piece (20), motor (72) are fixed in bracing piece (20), the bobbin (71) is worn to establish and is fixed with pivot (73), pivot (73) fixed connection in the output shaft of motor (72), and pivot (73) rotate with bracing piece (20) and are connected, and pivot (73) cover is equipped with damping circle (74) of hugging closely with bracing piece (20) lateral wall.

5. The sponge coefficient of restitution apparatus of claim 4, wherein: the lower end face of the limiting rod (63) is provided with a groove (14) for clamping and embedding the power supply magnet (15), the axis of the groove (14) is located at the axis of the through pipe (5), and the lowest point of the steel ball (16) is located on the horizontal plane of the lower end face of the limiting rod (63).

6. A sponge coefficient of restitution apparatus as claimed in any one of claims 1 to 5 wherein: the lower end face of the electromagnet (15) is a concave spherical surface, and the spherical surface of the steel ball (16) is attached to the lower end face of the electromagnet (15).

7. A sponge coefficient of restitution apparatus as claimed in any one of claims 1 to 5 wherein: the pipe wall of the through pipe (5) is transparent and is marked with scale marks (19) for indicating the height.

8. A sponge coefficient of restitution apparatus as claimed in any one of claims 1 to 5 wherein: an object stage (8) for placing a sample to be tested is arranged under the through hole (10), and a lifting assembly (9) for adjusting the height of the object stage (8) is arranged on the bottom plate (1); and a pressure sensor (12) for detecting the pressure of the sample to be detected and the supporting plate (3) is arranged in the cavity (11) of the supporting plate (3).

9. A sponge coefficient of restitution apparatus as claimed in any one of claims 1 to 5 wherein: the photoelectric sensor (13) is annular in shape.