CN111398034B

CN111398034B - Mask tension tester

Info

Publication number: CN111398034B
Application number: CN202010271292.8A
Authority: CN
Inventors: 赵志杰; 雷迪; 张宏涛; 王宸
Original assignee: Qinghai Provincial Drug Inspection And Testing Institute
Current assignee: Qinghai Provincial Drug Inspection And Testing Institute
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2022-09-02
Anticipated expiration: 2040-04-08
Also published as: CN111398034A

Abstract

The invention discloses a mask tension tester, and belongs to the field of detection devices. The apparatus includes a detection system comprising: a frame; a head die including a first body and a second body; the ear mold is positioned on one side of the head mold, a sensor for detecting the pulling force is arranged on the ear mold, and the sensor is in signal connection with a detection system; the vertical rail is fixedly arranged on the rack; the first driving device is fixedly arranged in the first body and used for driving the second body to move towards the direction far away from the first body, and the second body is slidably arranged on the vertical rail. The first driving device drives the second body to move, so that the mask connection part is tested, and the head model simulates the appearance of the head of a human body, so that the tested data is closer to the real situation, and the tested data is more accurate; the ear hanger is directly hung on the ear mold, so that the clamping and disassembling processes are simpler and more convenient and the detection time is saved compared with the traditional operation of clamping two ends.

Description

Mask tension tester

Technical Field

The invention relates to the field of detection devices, in particular to a mask tension tester.

Background

Masks are a hygiene product, and are very common in daily life. A common disposable mask is formed by welding two ear loops on two sides of a mask body. For disposable masks, national standards have clear requirements on the connection strength between the ear hook and the mask body. In the prior art, the connection strength between the ear hook and the cover body is tested by a tension tester. One end of the clamping cover body and the other end of the clamping ear hook apply force, the stress is detected through the sensor, a stress curve is generated by means of a computer test system, and the breaking tension is detected. However, when the mask is actually worn, the stress direction is not the stress direction during the test, and friction force exists between the mask and the face and between the ear band and the head, so that the data obtained by the test is not true stress.

Disclosure of Invention

The invention provides a mask tension tester which can solve the problem that the mask connection strength test in the prior art is inaccurate.

A mask tension tester, comprising a detection system, comprising:

a frame;

a head die including a first body and a second body;

the ear mold is positioned on one side of the head mold, a sensor for detecting the pulling force is arranged on the ear mold, and the sensor is in signal connection with the detection system;

the vertical rail is fixedly arranged on the rack;

the first driving device is fixedly arranged in the first body and used for driving the second body to move towards the direction far away from the first body, and the second body is slidably arranged on the vertical rail.

Preferably, the arc-shaped pulling force module further comprises a second driving device, a first steering gear, a second steering gear, a first shifting lever and a second shifting lever, the first shifting lever is fixedly connected to the first steering gear, the second shifting lever is fixedly connected to the second steering gear, the first steering gear and the second steering gear are both rotatably arranged on the second body, the second driving device is fixedly arranged in the second body, an output end of the second driving device is in driving connection with the first steering gear, and the first steering gear is meshed with the second steering gear; the two ear molds are located on two sides of the head mold and are respectively connected to the first driving lever and the second driving lever, and the first driving lever and the second driving lever are driven to move when rotating.

Preferably, the first driving device is an electric telescopic rod, and the second driving device is a motor.

Preferably, the device also comprises a third driving device, an arc-shaped rail, two side rails and two sliding rods;

the two side rails are positioned on two sides of the second body and fixedly connected to the second body, two ends of the arc-shaped rail are respectively connected to the two side rails, a first sliding groove is formed in each side rail, an arc-shaped second sliding groove is formed in each arc-shaped rail, and the second sliding grooves penetrate into the first sliding grooves; the two sliding rods are positioned on two sides of the head die, the two ear dies are fixedly connected to the two sliding rods respectively, and the end parts, far away from the ear dies, of the sliding rods can move along the first sliding grooves and/or the second sliding grooves;

the third driving device comprises a driving motor, a driving gear, a first push rod and a second push rod, the first push rod and the second push rod are positioned on two sides of the driving gear, the driving motor is used for driving the driving gear to rotate, the first push rod and the second push rod are both slidably arranged in the second body, and the first push rod and the second push rod are both meshed with the driving gear;

the first driving lever and the second driving lever are all provided with a shifting groove which is communicated to the outer side, and the shifting groove is used for accommodating the sliding rod.

Preferably, the two opposite ends of the first push rod and the second push rod are provided with magnetic blocks for adsorbing the slide rod.

Preferably, the device further comprises two return devices, the return devices are located in the first sliding groove and comprise a limiting spring and a baffle plate, the baffle plate is slidably arranged in the first sliding groove, one end of the limiting spring is connected to the baffle plate, and the other end of the limiting spring is connected to the first sliding groove.

The invention provides a mask tension tester, which simulates the actual stress condition of a mask through an ear mold, and drives a second body to move through a first driving device to realize the test of the junction of the mask; through directly hanging the ear-hang on the ear mold, for the operation of traditional with both ends centre gripping, the process of clamping and dismantlement is all simpler and more convenient, has saved check-out time.

Drawings

FIG. 1 is a first schematic structural view of a mask tension tester provided by the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic structural view of a mask tension tester provided by the present invention;

FIG. 4 is a third schematic structural view of a mask tension tester provided by the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 4;

FIG. 7 is an enlarged view of a portion of FIG. 6 at D;

FIG. 8 is an enlarged view of a portion of FIG. 6 at E;

FIG. 9 is a schematic structural view of another embodiment of C-C of FIG. 4;

fig. 10 is a partial enlarged view of fig. 9 at F.

Description of reference numerals:

10. the sliding rod comprises a first body, 11, a second body, 111, a containing groove, 12, an ear mold, 121, a sliding rod, 20, a side rail, 201, a first sliding groove, 21, an arc-shaped rail, 211, a second sliding groove, 30, a vertical rail, 40, a first steering gear, 401, a first deflector rod, 41, a second steering gear, 411, a second deflector rod, 51, a driving gear, 52, a first push rod, 521, a first rack, 53, a second push rod, 531, a second rack, 532, a magnetic suction block, 60, a limiting spring, 61, a baffle, 70 and an electric telescopic rod.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

The first embodiment is as follows:

as shown in fig. 1 and fig. 3, a mask tension tester provided in an embodiment of the present invention includes a detection system, a frame, a head mold, an ear mold 12, a vertical rail 30, and a first driving device, where the detection system is a computer processing module in the prior art and is not described again. The head model is used for simulating the shape of the head of a human body, and in order to be closer to the real stress situation, a skin-like coating can be coated on the outer surface of the head model so as to simulate the friction coefficient of skin, the head model comprises a first body 10 and a second body 11, the first body 10 and the second body 11 are arranged in a split mode, as shown in figure 1, the head model is cut from the middle of the head model and is divided into the first body 10 and the second body 11; the ear molds 12 are located on one side of the head mold, two ear molds 12 are located on two sides of the head mold in the embodiment, the ear molds 12 are provided with sensors for detecting the pulling force, when the ear molds 12 move, the pulling force on the ear molds 12 can be detected, the part is the prior art, the principle of the part is the same as that of a traditional pulling force tester, and the sensors are in signal connection with a detection system; the vertical rail 30 is fixedly arranged on the frame and extends towards the back of the brain; the first driving device is fixedly arranged in the first body 10 and is used for driving the second body 11 to move towards a direction away from the first body 10, and the second body 11 is slidably arranged on the vertical rail 30. Wherein, first drive arrangement is electric telescopic handle 70, and electric telescopic handle 70's output fixed connection to second body 11, second body 11 and the cooperation of erecting rail 30 drive second body 11 and remove along erecting rail 30 when electric telescopic handle 70 extends.

During testing, the user only needs to hang the ear on the ear mold 12 like wearing a mask normally, and starts the detection system, and the detection system controls the electric telescopic rod 70 to extend to perform the test.

Example two:

because the firmness test of the mask is divided into a plurality of types, in order to simulate more real stress condition, the embodiment also comprises an arc-shaped tension module, the ear mold comprises a second driving device, a first steering gear 40, a second steering gear 41, a first shifting rod 401 and a second shifting rod 411, wherein one end of the first shifting rod 401 is fixedly connected to the first steering gear 40, one end of the second shifting rod 411 is fixedly connected to the second steering gear 41, the first steering gear 40 and the second steering gear 41 are both rotatably arranged on a second body 11, the second body 11 is provided with a receiving groove 111 for receiving the first shifting rod 401 and the second shifting rod 411, the second driving device is fixedly arranged in the second body 11, the output end of the second driving device is in driving connection with the first steering gear 40, the first steering gear 40 is meshed with the second steering gear 41, and the other ends of the first shifting rod 401 and the second shifting rod 411 extend out of the second body 11 and are respectively connected to two ear molds 12; when the first driving lever 401 and the second driving lever 411 rotate, the ear mold 12 is driven to move.

The operation during the test is the same with the operation direction of embodiment one, with the ear hang on ear mould 12 can, the second drive arrangement is the motor, drive first steering gear 40 when the motor rotates and rotate, when first steering gear 40 rotates, drive second steering gear 41 in step and rotate, when first steering gear 40 and second steering gear 41 rotate, drive first driving lever 401 and second driving lever 411 in step and rotate in opposite directions, and then drive two ear moulds 12 and rotate in opposite directions towards the direction of keeping away from first body 10, the true atress direction of gauze mask is pressed close to more to this kind of mode, different test modes are provided.

Example three:

in the testing method specified by the national standard, another testing method is to directly stretch the two ear loops of the mask, and in order to simulate the testing method, as shown in fig. 4 to 6, the present embodiment further includes a third driving device, an arc-shaped rail 21, two side rails 20 and two sliding rods 121; the sliding rod 121 is made of magnetic material.

The two side rails 20 are positioned at two sides of the second body 11, the side rails 20 are fixedly connected to the second body 11, two ends of the arc-shaped rail 21 are respectively connected to the two side rails 20, a first sliding groove 201 is formed in each side rail 20, each first sliding groove 201 is linear, an arc-shaped second sliding groove 211 is formed in each arc-shaped rail 21, each second sliding groove 211 is arc-shaped, and each second sliding groove 211 penetrates into the corresponding first sliding groove 201; the two slide bars 121 are positioned at two sides of the head die, the two ear dies 12 are respectively and fixedly connected to the two slide bars 121, the end parts of the slide bars 121 far away from the ear dies 12 can move along the first slide groove 201 and/or the second slide groove 211, and the slide bars 121 are matched with the first slide groove 201 and the second slide groove 211;

as shown in fig. 7, the third driving device includes a driving motor, a driving gear 51, a first push rod 52 and a second push rod 53, the first push rod 52 and the second push rod 53 are located at two sides of the driving gear 51, the driving motor is used for driving the driving gear 51 to rotate, the first push rod 52 and the second push rod 53 are both slidably disposed in the second body 11, a first rack 521 is disposed on the first push rod 52, a second rack 531 is disposed on the second push rod 53, the first rack 521 and the second rack 531 are located at two sides of the driving gear 51, and the first rack 521 and the second rack 531 are both engaged with the driving gear 51; the first shifting lever 401 and the second shifting lever 411 are both provided with shifting grooves penetrating to the outer side, and the shifting grooves are used for accommodating the sliding rod 121. As shown in fig. 2, the shifting groove is a U-shaped structure with an opening at one end. The first push rod 52 is located below the first lever 401, and the second push rod 53 is located below the second lever 411. The opening direction of the shifting groove faces to the direction far away from the head die.

As shown in fig. 8, magnetic blocks 532 are disposed at two opposite ends of the first push rod 52 and the second push rod 53 for adsorbing the sliding rod 121.

When the first shift lever 401 and the second shift lever 411 rotate, the sliding rod 121 is located in the shift slot at this time, the first shift lever 401 and the second shift lever 411 can drive the sliding rod 121 to move along the second sliding slot 211, and the sliding rod 121 cannot slide into the first sliding slot 201 due to the attraction effect of the magnetic attraction block 532.

When the mask needs to be subjected to tensile test towards two sides, as shown in fig. 6, only the third driving device needs to be started, the third driving device drives the driving gear 51 to rotate, the driving gear 51 drives the first push rod 52 and the second push rod 53 to move back to back when rotating, the first push rod 52 and the second push rod 53 respectively push the sliding rods 121 at two sides, and the sliding rods 121 are driven to move along the first sliding groove 201. When the push rod is retracted, the magnetic attraction block 532 attracts the slide rod 121 to return to the initial position during the retraction of the first push rod 52 and the second push rod 53.

Example four:

different from the third embodiment, as shown in fig. 9 to 10, the present embodiment further includes two return devices, the return devices are located in the first sliding groove 201 and include a limiting spring 60 and a baffle 61, the baffle 61 is slidably disposed in the first sliding groove 201, one end of the limiting spring 60 is connected to the baffle 61, and the other end is connected to the first sliding groove 201.

In the initial state, the baffle 61 is located at the joint of the first sliding chute 201 and the second sliding chute 211, and the baffle 61 blocks the first sliding chute 201. When the first driving lever 401 and the second driving lever 411 rotate, the blocking plate 61 provides a blocking force, so that the sliding rod 121 can smoothly move along the track of the second sliding groove 211, and when the first push rod 52 and the second push rod 53 act, the pushing force is large, the resistance of the limiting spring 60 is overcome, the blocking plate 61 is pushed, the limiting spring 60 is compressed, the sliding rod 121 moves, the blocking plate 61 is driven to move, and when the return stroke is performed, the blocking plate 61 returns to the initial position under the elastic force of the limiting spring 60 due to the action of the limiting spring 60.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A mask tension tester, including detecting system, its characterized in that includes:

a frame;

a head die including a first body and a second body;

the vertical rail is fixedly arranged on the rack;

the first driving device is fixedly arranged in the first body and used for driving the second body to move towards the direction far away from the first body, and the second body is slidably arranged on the vertical rail;

the arc-shaped pulling force module comprises a second driving device, a first steering gear, a second steering gear, a first shifting lever and a second shifting lever, the first shifting lever is fixedly connected to the first steering gear, the second shifting lever is fixedly connected to the second steering gear, the first steering gear and the second steering gear are both rotatably arranged on the second body, the second driving device is fixedly arranged in the second body, the output end of the second driving device is in driving connection with the first steering gear, and the first steering gear is meshed with the second steering gear; the two ear molds are located on two sides of the head mold and are respectively connected to the first driving lever and the second driving lever, and the first driving lever and the second driving lever are driven to move when rotating.

2. The mask tension tester of claim 1, wherein the first drive device is an electric telescopic rod and the second drive device is a motor.

3. The mask force tester of claim 1 or 2, further comprising a third drive, an arcuate rail, two side rails, and two slide bars;

the two side rails are positioned on two sides of the second body and fixedly connected to the second body, two ends of the arc-shaped rail are respectively connected to the two side rails, a first sliding groove is formed in each side rail, an arc-shaped second sliding groove is formed in each arc-shaped rail, and the second sliding grooves penetrate into the first sliding grooves; the two sliding rods are positioned on two sides of the head die, the two ear dies are respectively and fixedly connected to the two sliding rods, and the end parts, far away from the ear dies, of the sliding rods can move along the first sliding grooves and/or the second sliding grooves;

the first driving lever and the second driving lever are provided with shifting grooves which are communicated to the outer side, and the shifting grooves are used for accommodating the sliding rods.

4. The mask tension tester of claim 3, wherein magnetic blocks are disposed at two opposite ends of the first push rod and the second push rod for adsorbing the slide rod.

5. The mask tension tester of claim 3, further comprising two return devices, wherein the return devices are located in the first chute and comprise a limit spring and a baffle, the baffle is slidably disposed in the first chute, and one end of the limit spring is connected to the baffle and the other end of the limit spring is connected to the first chute.