CN113533200B

CN113533200B - Strength testing equipment for accurate guiding and stretching of dental binder

Info

Publication number: CN113533200B
Application number: CN202111083102.0A
Authority: CN
Inventors: 王勇
Original assignee: Nantong Supai Denture Co ltd
Current assignee: Nantong Supai Denture Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-11-16
Anticipated expiration: 2041-09-15
Also published as: CN113533200A

Abstract

The invention discloses strength testing equipment for accurate guiding and stretching of dental adhesives, which comprises an operating platform, wherein two sliding seats are symmetrically and slidably arranged on the operating platform, fixing holes are formed in the opposite ends of the two sliding seats, the two sliding seats are connected with driving plates through positioning plates in a damping mode, positioning blocks are clamped on the operating platform through supporting arms, and the positioning blocks are located between the two driving plates. Compared with the traditional test equipment, the equipment only needs to replace the fixed seat after being used, the whole sliding seat does not need to be cleaned, more samples can be tested in a shorter time, and the fixed seat can be reused after being cleaned at a later stage, so that waste is avoided; the single gluing amount of the equipment is approximately the same, the gluing amount error is smaller, and the test result is more accurate; even if the shape of the sample is irregular, the device can also well fix the sample, so that the stress loading direction is vertical to the bonding interface, and the sample is not easy to twist.

Description

Strength testing equipment for accurate guiding and stretching of dental binder

Technical Field

The invention relates to the technical field of dental medical treatment, in particular to a strength testing device for accurate guiding and stretching of dental adhesives.

Background

A special adhesive is usually needed for tooth restoration, the adhesive strength is an important index for evaluating the performance of a dental adhesive, a tester usually uses micro-tensile testing equipment to test the strength of the adhesive, the accuracy of a test result can be greatly improved by ensuring that a sample is not twisted during testing, in the patent document with the application number of CN201310732593.6, a micro-tensile adhesive strength testing clamp of the dental adhesive is provided, the micro-tensile adhesive strength testing clamp has the advantages that the equipment is simple in structure, a double nut and a gasket are utilized to press a bonded sample, the bonded sample does not need to be bonded on a testing table by using the adhesive, but when the equipment is used, the double nut is in a rigid structure, the direction of the sample is difficult to adjust during fixing, the volume of the sample is small, the rigid fixing is inconvenient, if the flatness of a cutting surface of the sample does not meet the requirement, the sample is easy to generate cohesive fracture or mixed fracture during loading stress, not only can cause the waste of sample, but also can influence the accuracy of test, for this reason, we propose a dentistry binder accurate direction tensile strength test equipment.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a sample is small in size and inconvenient to rigidly fix, and if the flatness of a cutting surface of the sample does not meet the requirement, the sample is easy to be subjected to cohesive fracture or mixed fracture, and provides strength testing equipment for accurately guiding a dental adhesive to tension.

In order to achieve the purpose, the invention adopts the following technical scheme:

the strength testing equipment for accurate guiding and stretching of dental adhesives comprises an operating platform, wherein two sliding seats are symmetrically and slidably arranged on the operating platform, fixing holes are formed in the opposite ends of the two sliding seats, the two sliding seats are connected with a driving plate through positioning plates in a damping mode, positioning blocks are clamped on the operating platform through supporting arms, and the locating piece is located between two driving plates, two the standing groove has all been seted up in the sliding seat, two first fixed establishment, second fixed establishment and mend gluey mechanism, two all install in the standing groove a plurality of springs of fixedly connected with between the cell wall of second fixed establishment and the corresponding standing groove, two open groove has all been seted up on the sliding seat, two the flexible bag and the pressure regulating mechanism have all been placed to open inslot, and it has the honeycomb duct all to communicate between the flexible bag that the position is corresponding and the pressure regulating mechanism.

Further, two pressure regulating mechanism all includes many shunt tubes, transfer ware and pressure divider pipe, many all be equipped with first pressure valve between shunt tubes and the transfer ware, two all be equipped with the second pressure valve between pressure divider pipe and the transfer ware, two all be equipped with the solenoid valve between honeycomb duct and the transfer ware.

Further, two the driving plate is close to the one end that corresponds uncovered groove and all passes through riser fixedly connected with closing plate, two install the limiting plate in the uncovered groove, and set up the sliding tray that corresponds with corresponding riser specification on the limiting plate, and the limiting plate that is located same uncovered inslot and closing plate all offset with the flexible bag that corresponds.

Further, two first fixed establishment all includes a plurality of annular cover, and a plurality of annular cover equidistance distribute in corresponding standing groove and attached on the inner wall of standing groove, all communicates communicating pipe between a plurality of annular cover that the position is corresponding, many the shunt tubes is kept away from the one end of transfer ware and is all with corresponding annular cover sealing connection, two equal fixed mounting has the power supply ware on the sliding seat, two all be connected with the wire between power supply ware and the corresponding annular cover.

Further, two second fixed establishment all includes the fixing base, two the lateral wall of fixing base all with corresponding spring fixed connection, two the concave groove has all been seted up towards one side of corresponding annular sheath to the fixing base, two the notch department in concave groove all is equipped with the anti-overflow edge.

Further, the two glue supplementing mechanisms comprise glue storage boxes, a plurality of glue overflow pipes are communicated between the two glue storage boxes and the corresponding concave grooves, elastic bags are arranged in the two glue storage boxes, the two elastic bags are communicated with the corresponding pressure dividing pipes, and partition plates are arranged in the two glue storage boxes in a sealing and sliding mode.

Two the upper and lower both sides of baffle are the arc, two it has a plurality of bar archs, every to store up equidistant interval distribution on gluey case's interior roof and the interior diapire one side of the corresponding baffle of protruding orientation of bar is the arcwall face, every one side that the bar arch deviates from corresponding baffle is the inclined plane.

Electrorheological fluid is contained in each of the telescopic bags, the elastic bags and the annular sleeves, glue solution is contained in each of the two glue storage boxes, and pressure sensors are arranged between the elastic bags and the partition plates at corresponding positions.

Compared with the traditional test equipment, the equipment only needs to replace the fixed seat after being used, the whole sliding seat does not need to be cleaned, more samples can be tested in a shorter time, and the fixed seat can be reused after being cleaned at a later stage, so that waste is avoided; the single gluing amount of the equipment is approximately the same, the gluing amount error is smaller, and the test result is more accurate; even if the shape of the sample is irregular, the device can also well fix the sample, so that the stress loading direction is vertical to the bonding interface, and the sample is not easy to twist.

Drawings

FIG. 1 is a schematic structural view of a strength testing apparatus for precisely oriented tensile of dental adhesives according to the present invention;

FIG. 2 is a cross-sectional view of an open channel in a precision oriented tensile strength testing apparatus for dental adhesives in accordance with the present invention;

FIG. 3 is a cross-sectional view of a glue storage box and a fixing seat in the strength testing device for precisely guiding and stretching the dental adhesive provided by the invention;

FIG. 4 is a schematic connection diagram of a transfer device, a glue storage box, a fixing seat and a test sample in the strength testing equipment for precisely guiding and stretching the dental adhesive provided by the invention;

FIG. 5 is an enlarged view taken at A in FIG. 3;

fig. 6 is an enlarged view of fig. 3 at B.

In the figure: the device comprises an operation table 1, a limiting strip 2, a sample 3, a power supply 4, an open groove 5, a sliding seat 6, an anti-overflow edge 7, a vertical plate 8, a transmission plate 9, a support arm 10, a positioning block 11, a positioning plate 12, a fixing hole 13, a limiting plate 14, a shunt tube 15, a telescopic bag 16, a sealing plate 17, a transfer device 18, a placing groove 19, an elastic bag 20, a strip-shaped bulge 21, a glue storage box 22, a partition plate 23, a spring 24, a fixing seat 25, a ring-shaped sleeve 26, a glue overflow tube 27, a lead 28, a communicating tube 29, a pressure-dividing tube 30, a pressure sensor 31 and a flow-guiding tube 32.

Detailed Description

Referring to fig. 1, a strength testing device for precisely guiding and stretching dental adhesives comprises an operating table 1, wherein two sliding seats 6 are symmetrically and slidably arranged on the operating table 1, two limiting strips 2 are further arranged on the operating table 1, the limiting strips 2 are respectively arranged on two sides of the sliding seats 6 and can limit the moving direction of the sliding seats 6, fixing holes 13 are respectively formed in the opposite ends of the two sliding seats 6, pull ropes or drag hooks of a tensile testing machine (not shown) are connected with the fixing holes 13 to drive the two sliding seats 6 to move oppositely, so that the strength testing process is completed, driving plates 9 are respectively connected to the two sliding seats 6 through a positioning plate 12 in a damping manner, the positions of the driving plates 9 are adjusted according to the length of a test sample 3, a positioning block 11 is clamped on the operating table 1 through a supporting arm 10, the positioning block 11 is arranged between the two driving plates 9, and the specification of the positioning block 11 can be changed, all seted up standing groove 19 in two sliding seats 6, all installed first fixed establishment, second fixed establishment and mend gluey mechanism in two standing grooves 19, a plurality of springs 24 of fixedly connected with between two second fixed establishment and the cell wall that corresponds standing groove 19, all seted up uncovered groove 5 on two sliding seats 6, all placed flexible bag 16 and pressure regulating mechanism in two uncovered grooves 5, all communicate honeycomb duct 32 between the corresponding flexible bag 16 in position and the pressure regulating mechanism.

Referring to fig. 2-3, each of the two pressure regulating mechanisms includes a plurality of shunt tubes 15, a transfer device 18 and a pressure dividing tube 30, a first pressure valve is disposed between each of the shunt tubes 15 and the transfer device 18, a second pressure valve is disposed between each of the pressure dividing tubes 30 and the transfer device 18, an electromagnetic valve is disposed between each of the two flow guide tubes 32 and the transfer device 18, a threshold of the second pressure valve is greater than a threshold of the first pressure valve, the first pressure valve is opened first along with the increase of pressure, and the second pressure valve is opened later.

Two driving plates 9 are close to the one end that corresponds open groove 5 and all pass through riser 8 fixedly connected with closing plate 17, install limiting plate 14 in two open grooves 5, and set up the sliding tray that corresponds with corresponding riser 8 specification on the limiting plate 14, and limiting plate 14 and closing plate 17 that are located same open groove 5 all offset with the flexible bag 16 that corresponds.

Referring to fig. 4, each of the two first fixing mechanisms includes a plurality of annular sleeves 26, the plurality of annular sleeves 26 are equally spaced and distributed in the corresponding placing groove 19 and attached to the inner wall of the placing groove 19, a communicating pipe 29 is communicated between the plurality of annular sleeves 26 corresponding to the positions, one ends of the plurality of shunt tubes 15, which are far away from the transfer device 18, are hermetically connected with the corresponding annular sleeves 26, power supplies 4 are fixedly mounted on the two sliding seats 6, and wires 28 are connected between the two power supplies 4 and the corresponding annular sleeves 26, as shown in fig. 4, when a sample 3 is inserted into the placing groove 19, the annular sleeves 26 can be sleeved on the periphery of the sample 3, and a certain gap is formed between the annular sleeves 26 and the sample 3, so that the placing groove 19 is matched with samples 3 of different specifications.

Referring to fig. 6, two second fixed establishment all include fixing base 25, the lateral wall of two fixing base 25 all with corresponding spring 24 fixed connection, the purpose that sets up spring 24 is in order to make sample 3 insert standing groove 19 back completely, can closely offset with fixing base 25, the concave groove has all been seted up towards one side of corresponding annular cover 26 to two fixing base 25, the notch department of two concave grooves all is equipped with the anti-overflow along 7, the anti-overflow is shown in fig. 6 along 7 incline direction, can effectively avoid the glue solution to spill over from between concave groove and the sample 3.

Two glue supplementing mechanisms are all including storing up gluey case 22, and it has a plurality of excessive rubber tubes 27 all to communicate between two glue storage cases 22 and the corresponding concave groove, and excessive rubber tubes 27 insert the one end of storing up gluey case 22 and be the stereoplasm sharp pipe, and the excessive rubber tubes 27 lie in the part of storing up gluey case 22 and be elastic hose, and two are stored up gluey incasement and all place elastic bag 20, and two elastic bags 20 all are linked together with corresponding partial pressure pipe 30, and two are stored up gluey incasement and all seal sliding mounting have baffle 23.

The upper and lower both sides of two baffle 23 are the arc, equal distance interval distribution has a plurality of bar protrudingly 21 on two interior roof and the interior diapire that store up gluey case 22, one side that every bar is protruding 21 towards corresponding baffle 23 is the arcwall face, one side that every bar is protruding 21 to deviate from corresponding baffle 23 is the inclined plane, contained angle between inclined plane and the horizontal plane is at 60-120 within ranges, under the condition of not applying great external force, baffle 23 is crossed behind a bar arch 21 and is hardly resetd again, can avoid storing up inhaling the outside air behind the gluey incasement 22 interior production negative pressure.

Electrorheological fluid is contained in each of the telescopic bag 16, the elastic bag 20 and the annular sleeve 26, glue solution is contained in the two glue storage tanks 22, and pressure sensors 31 are arranged between the elastic bags 20 and the partition plates 23 at corresponding positions.

When the device is used, the distance between the two sliding seats 6 is large, so that a tester can conveniently insert the sample 3 into the placing groove 19, then the pull rope or the drag hook of the tensile testing machine is connected with the fixed hole 13, so as to test the change of tensile force subsequently, the fixed seat 25 is at the maximum displacement position under the action of the spring 24, after the two samples 3 are respectively inserted into the two placing grooves 19, the sample 3 can extrude the fixed seat 25 and push the fixed seat 25 towards the glue storage box 22, at the moment, the glue overflow pipe 27 can be further inserted into the glue storage box 22 (the connection part of the glue storage box 22 and the glue overflow pipe 27 can be provided with a layer of elastic plastic film, when in an initial state, the glue storage box 22 is in a sealing state, so that the glue can be stored for a long time, when the glue overflow pipe 27 punctures the elastic plastic film, the glue can flow into the glue overflow pipe 27), under the action of friction force between the annular sleeve 26 and the sample 3, after the tester loosens the sample 3, the sample 3 can also be positioned in the placing groove 19;

when the two sliding seats 6 are close to each other, the positioning block 11 drives the sealing plate 17 to squeeze the telescopic bag 16 through the transmission plate 9 and the vertical plate 8, so that the electrorheological fluid in the telescopic bag 16 flows into the relay 18, because the threshold value of the second pressure valve is greater than that of the first pressure valve, the first pressure valve is firstly opened along with the increase of the pressure intensity, and the second pressure valve is then opened, so that the electrorheological fluid firstly flows into the annular sleeve 26 through the shunt tube 15, the annular sleeve 26 is expanded, the test sample 3 is further fixed, and when the expansion degree of the annular sleeve 26 reaches a certain amount, the pressure intensities in the shunt tube 15 and the relay 18 exceed the threshold value of the second pressure valve, so that the second valve is opened, and the electrorheological fluid is guided to flow into the elastic bag 20 through the shunt tube 30;

taking fig. 4 as an example, as the elastic bag 20 expands, the partition 23 moves rightward, so that the glue in the glue storage tank 22 is squeezed into the fixing seat 25 through the glue overflow tube 27, and the glue firmly adheres part of the side wall of the sample 3 to the inner wall of the fixing seat 25, thereby completing the fixing of the sample 3;

then the power supply device 4 is started, the wire 28 electrically connects the power supply device 4 with the electrorheological fluid in the annular sleeve 26, when the electric field strength reaches a certain value, the viscosity of the electrorheological fluid is greatly increased, at the moment, the electrorheological fluid can be considered to be changed into a solid state, and in the expansion process of the annular sleeve 26, the elastic annular sleeve 26 can be tightly attached to the outer side wall of the test sample 3, even if the shape of the test sample 3 is irregular, the device can also play a good role in fixing the test sample 3, so that the stress loading direction is vertical to the bonding interface, and the test sample 3 is not easy to twist;

a tester coats the adhesive to be tested on one side of the two samples 3 opposite to each other, after the two samples 3 are abutted, the adhesive can fix the two samples 3 after being cured by a specific means, at the moment, the tensile testing machine drives the two sliding seats 6 to move in opposite directions until the two samples 3 are separated, and the bonding strength can be deduced by detecting the tensile change in the process;

after the test is finished, the sample 3 and the fixing seat 25 are taken out, the fixing seat 25 and the glue overflow pipe 27 are integrated, then the new fixing seat 25 is quickly placed, the glue overflow pipe 27 of the new fixing seat 25 can still be inserted into the glue storage box 22, then the new sample 3 is placed into the placing groove 19, and then the steps are repeated, so that the bonding strength of the adhesive can be tested, a tester can quickly test parameters of various adhesives, compared with the traditional test equipment, the equipment only needs to replace the fixing seat 25 after being used, the whole sliding seat 6 does not need to be cleaned, and more samples can be tested in a shorter time;

it is worth to be noted that the structure of the strip-shaped protrusions 21 limits the movement direction of the partition 23, the partition 23 is difficult to reset after passing over one strip-shaped protrusion 21 under the action of no large external force, the situation that negative pressure is generated in the glue storage box 22 to suck in outside air when the elastic bag 20 resets and the fixed seat 25 is taken out can be avoided, the contact between glue solution and air is reduced, the volatilization speed of the glue solution is reduced, the workload of testers can be reduced by automatic extrusion of the glue solution, and the testing time is saved;

in the process of the motion of baffle 23, every time baffle 23 passes through a bar arch 21, pressure sensor 31's pressure value all can produce great change, change number of times through the detection pressure value, can learn the volume of the glue solution of extruding in the single test (bar arch 21 is the equidistance and distributes), when the volume of the glue solution of extruding is enough, the solenoid valve of external controller control honeycomb duct 32 department is closed, even the expansion bag 16 is extruded again, expansion bag 16 is also just propped open, its inside electrorheological fluid also can not get into in the elasticity bag 20 again, compare in traditional test equipment, this equipment's coat volume error is littleer, the test result is more accurate.

Claims

1. Tensile strength test equipment of accurate direction of dentistry binder, including operation panel (1), its characterized in that, symmetrical slip is provided with two sliding seats (6) on operation panel (1), two the one end that sliding seat (6) carried on the back mutually all seted up fixed orifices (13), two all be connected with driving plate (9) through locating plate (12) damping on sliding seat (6), operation panel (1) is gone up to have locating piece (11) through support arm (10) joint, and locating piece (11) are located between two driving plate (9), two all seted up standing groove (19) in sliding seat (6), two all install first fixed establishment, second fixed establishment and glue filling mechanism in standing groove (19), two fixed connection has a plurality of springs (24) between the cell wall of second fixed establishment and corresponding standing groove (19), two open groove (5) have all been seted up on sliding seat (6), two all placed expansion bag (16) and pressure regulating mechanism in open groove (5), all communicate between corresponding expansion bag (16) in position and the pressure regulating mechanism honeycomb duct (32).

2. The strength testing equipment for precisely guiding and stretching dental adhesives according to claim 1, wherein the two pressure regulating mechanisms comprise a plurality of shunt tubes (15), a transfer device (18) and a pressure distributing tube (30), a first pressure valve is arranged between the shunt tubes (15) and the transfer device (18), a second pressure valve is arranged between the two pressure distributing tubes (30) and the transfer device (18), and a solenoid valve is arranged between the two flow guide tubes (32) and the transfer device (18).

3. The equipment for testing the strength of the dental adhesive in accurate guiding and stretching according to claim 1, wherein two ends of the transmission plates (9) close to the corresponding open grooves (5) are fixedly connected with sealing plates (17) through risers (8), two limiting plates (14) are installed in the open grooves (5), sliding grooves corresponding to the corresponding risers (8) are formed in the limiting plates (14), and the limiting plates (14) and the sealing plates (17) in the same open grooves (5) are abutted to corresponding expansion bags (16).

4. The strength testing device for precisely guiding and stretching dental adhesives as claimed in claim 2, wherein each of the two first fixing mechanisms comprises a plurality of annular sleeves (26), the plurality of annular sleeves (26) are equally spaced and distributed in the corresponding placing groove (19) and attached to the inner wall of the placing groove (19), communicating pipes (29) are communicated between the plurality of annular sleeves (26) corresponding in position, one ends of the plurality of shunt tubes (15) far away from the transfer device (18) are hermetically connected with the corresponding annular sleeves (26), power supplies (4) are fixedly mounted on the two sliding seats (6), and wires (28) are connected between the two power supplies (4) and the corresponding annular sleeves (26).

5. The equipment for testing the strength of the dental adhesive in accurate guiding and stretching according to claim 4, wherein each of the two second fixing mechanisms comprises a fixing seat (25), the side walls of the two fixing seats (25) are fixedly connected with corresponding springs (24), one side of each of the two fixing seats (25) facing the corresponding annular sleeve (26) is provided with a concave groove, and the notches of the two concave grooves are provided with anti-overflow edges (7).

6. The strength test equipment for precisely guiding and stretching dental adhesives according to claim 4, wherein each of the two adhesive supplying mechanisms comprises an adhesive storage box (22), a plurality of adhesive overflow pipes (27) are communicated between each of the two adhesive storage boxes (22) and the corresponding concave groove, each of the two adhesive storage boxes (22) is internally provided with an elastic bag (20), each of the two elastic bags (20) is communicated with a corresponding pressure dividing pipe (30), and each of the two adhesive storage boxes (22) is internally provided with a partition plate (23) in a sealing and sliding manner.

7. The equipment for testing the strength of the dental adhesive in the precise guide stretching is characterized in that the upper and lower sides of the two partition plates (23) are arc-shaped, a plurality of strip-shaped protrusions (21) are distributed on the inner top wall and the inner bottom wall of the two adhesive storage boxes (22) at equal intervals, one side of each strip-shaped protrusion (21) facing the corresponding partition plate (23) is an arc-shaped surface, and one side of each strip-shaped protrusion (21) departing from the corresponding partition plate (23) is an inclined surface.

8. The strength test equipment for precisely guiding the tensile strength of the dental adhesives according to claim 6, wherein each of the telescopic bags (16), the elastic bags (20) and the annular sleeves (26) is filled with electrorheological fluid, two glue storage tanks (22) are filled with glue, and a pressure sensor (31) is arranged between the elastic bags (20) and the partition plates (23) corresponding to the positions.