CN209291395U - Material optical fiber screening device - Google Patents

Abstract

The utility model relates to a kind of material optical fiber screening devices.The material optical fiber screening device includes vibrating disk, air blowing component and fiber optical sensing assemblies, vibrating disk includes vibrating disk, vibrating disk is provided with sieve material track, vibrating disk is used to that with groove type material to be driven to expect moving on rails in sieve along predetermined direction when vibrated, air blowing component and fiber optical sensing assemblies are respectively arranged on vibrating disk, wherein, the gas hole of air blowing component is located on the side wall of sieve material track, the fibre-optical probe of fiber optical sensing assemblies is towards gas hole, air blowing component is used to supply gas when the reflective light intensity of fiber optical sensing assemblies exceeds threshold value light intensity to gas hole with groove type material to blow off and sieves material track.Above-mentioned material optical fiber screening device, it is compact-sized reasonable, the material of align-err can be filtered out in time, realize accurately material screening, improve the screening efficiency of with groove type material.

Description

Material optical fiber screening device

Technical field

The utility model relates to material screening technique fields, more particularly to a kind of material optical fiber screening device.

Background technique

Fig. 1 is the structural schematic diagram of with groove type material 90, which has groove 91, and the groove 91 The side of the groove-shaped material 90 of proximity band.The with groove type material 90 of this type is the zero of the equipment such as smart phone, tablet computer Accessory.

Currently, traditional screening to the type material is using mechanical sorting or other sorting modes.For example, the type Material usually carry out unified specification screening arrangement in vibration feeder, and then uniformly each material is exported outward, thus Achieve the purpose that quick sorting.

There is " anti-material " however, traditional sorting mode frequently can lead to material, i.e., partial material is because of vibration feeder False judgment and the material of align-err is screened and is exported, the appearance of " anti-material " will bring the production and processing in later period need not The trouble wanted, it is serious also result in later product assembly it is bad.

Utility model content

Based on this, it is necessary to for how accurately the technical issues of material screening, provide a kind of material optical fiber screening dress It sets.

For the technical problem, the utility model provides a kind of material optical fiber screening device, material optical fiber screening dress It sets including vibrating disk, air blowing component and fiber optical sensing assemblies, the vibrating disk includes vibrating disk, and the vibrating disk is provided with sieve material Track, the vibrating disk are used to that with groove type material to be driven to expect moving on rails in the sieve along predetermined direction when vibrated, The air blowing component and the fiber optical sensing assemblies are respectively arranged on the vibrating disk, wherein the air blowing of the air blowing component Hole is located on the side wall of the sieve material track, and the fibre-optical probes of the fiber optical sensing assemblies is towards the gas hole, the air blowing Component is used to supply gas when the reflective light intensity of the fiber optical sensing assemblies exceeds threshold value light intensity to the gas hole with by the band Groove-shaped material blows off sieve material track.

The vibrating disk is additionally provided with the area that gathers materials in one of the embodiments, and the area that gathers materials is located at the vibrating disk Central region, the sieve material track is located at the side wall of the vibrating disk, area and the sieve material orbit connection of gathering materials.

The fiber optical sensing assemblies include that adjustment seat, mounting blocks, positioning column and optical fiber are visited in one of the embodiments, Head, for the adjustment seat adjacent to sieve material track installation on the vibrating disk, the mounting blocks are slidably mounted on the adjusting On seat, the positioning column is connect with the mounting blocks, and the fibre-optical probe is removably mounted on the positioning column.

The adjustment seat offers adjusting through slot in one of the embodiments, and the adjustment seat is provided with adjusting bolt, The adjusting bolt is actively located in the adjusting through slot, and the adjusting bolt is for wearing the adjusting through slot and by the tune Section seat is fixed on the vibrating disk.

The adjustment seat is L-type structure in one of the embodiments,.

The adjustment seat includes the adjustment portion being connected and interconnecting piece, the adjusting through slot in one of the embodiments, It is opened in the adjustment portion, the adjustment portion is connect by the adjusting bolt with the vibrating disk, and the interconnecting piece is far from institute State vibrating disk.

The adjustment portion and the interconnecting piece integral molding in one of the embodiments,.

The interconnecting piece is provided with caging bolt in one of the embodiments, and the mounting blocks offer installation through slot, The caging bolt wears the installation through slot and the mounting blocks is fixed on the interconnecting piece.

The positioning column is removably mounted to one of the mounting blocks far from the adjustment portion in one of the embodiments, End.

The positioning column is equipped with positioning bolt and offers probe through-hole, the positioning spiral shell in one of the embodiments, Bolt is movably set in the positioning column, and the movable end of the positioning bolt is located at the probe through-hole, and the fibre-optical probe is worn If the probe through-hole, the movable end of the positioning bolt is abutted with the fibre-optical probe the fibre-optical probe is fixed on institute State positioning column.

Above-mentioned material optical fiber screening device, fiber optical sensing assemblies judge with groove type object by the intensity size of reflective light intensity Whether material is arranged in sieve material track by set queueing discipline, since with groove type material has unique groove, therefore light The fine received reflective light intensity of sensory package has unique threshold value range of light intensity, when the reflective light intensity of fiber optical sensing assemblies exceeds threshold Judge that the with groove type material, at this time can be by the with groove type of the align-err by air blowing component for align-err when value light intensity Material, which blows off, sieves material track, so that it is come back to vibrating disk and is screened again.The compact conjunction of material optical fiber screening apparatus structure Reason, the material of align-err can be filtered out in time, realize accurately material screening, improve the sieve of with groove type material Select efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of with groove type material；

Fig. 2 is the structural schematic diagram of material optical fiber screening device in one embodiment；

Fig. 3 is the partial structural diagram of material optical fiber screening device in one embodiment；

Fig. 4 is the partial structural diagram at another visual angle of material optical fiber screening device in one embodiment；

Fig. 5 is the structural schematic diagram of vibrating disk in one embodiment；

Fig. 6 is the structural schematic diagram of air blowing component in one embodiment；

Fig. 7 is the structural schematic diagram at another visual angle of air blowing component in one embodiment；

Fig. 8 is the structural schematic diagram of fiber optical sensing assemblies in one embodiment.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs The limitation for the specific embodiment opened.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down " It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level ", "upper", "lower", "left", "right" and similar statement for illustrative purposes only, be not offered as being uniquely to implement Mode.

2 are please referred to, the utility model provides a kind of material optical fiber screening device 10, the material optical fiber screening device 10 packet Include vibrating disk 100, air blowing component 200, fiber optical sensing assemblies 300, pedestal 400, electrical mounting base 500 and the feeding track that directly shakes 600, vibrating disk 100, electrical mounting base 500 and straight vibration feeding track 600 are respectively arranged on pedestal 400.200 He of air blowing component Fiber optical sensing assemblies 300 are respectively arranged on vibrating disk 100.Vibrating disk 100 is connect with straight vibration feeding track 600.Electrical installation Seat 500 is for installing fibre optical sensor (not shown) and compressed air source unit (not shown) etc..Fibre optical sensor is used for and Fibre Optical Sensor Component 300 connects.Compressed air source unit with air blowing component 200 for connecting.

Referring to Figure 2 together and Fig. 3, vibrating disk 100 are provided with sieve material track 121, and vibrating disk 100 is used for when vibrated The with groove type material 90 is driven to move on sieve material track 121 along predetermined direction, air blowing component 200 and fiber optical sensing assemblies 300 are respectively arranged on vibrating disk 100, and the gas hole 212 of air blowing component 200 is located on the side wall of sieve material track 121, and optical fiber passes The fibre-optical probe 340 of component 300 is felt towards gas hole 212, and air blowing component 200 is used for the reflected light when fiber optical sensing assemblies 300 It supplies gas when exceeding threshold value light intensity by force to gas hole 212 with groove type material to blow off and sieves material track 121, it is made to come back to vibration Moving plate 100 is screened again.

Above-mentioned material optical fiber screening device 10, the intensity size judgement band ditch that fiber optical sensing assemblies 300 pass through reflective light intensity Whether groove profile material is arranged in sieve material track 121 by set queueing discipline, as shown in Figure 1, due to groove type material 90 have unique groove 91, therefore the received reflective light intensity of fiber optical sensing assemblies 300 has unique threshold value range of light intensity, works as light The reflective light intensity of fine sensory package 300 judges the with groove type material for align-err, at this time by blowing when exceeding threshold value light intensity Pneumatic module 200 the with groove type material of the align-err can be blown off sieve material track 121, make its come back to vibrating disk 100 into Row screens again.The material optical fiber screening apparatus structure compact and reasonable, can in time filter out the material of align-err, realize Accurately material screening, improves the screening efficiency of with groove type material.

As shown in Figure 3 and Figure 4, vibrating disk 100 includes the edge edge branch of support bottom 110 and self-supporting bottom 110 Annular side portions 120 made of the axial side extension of bottom 110 are supportted, support the surface of bottom 110 rounded, annular side portions 120 Inner wall on be provided with sieve material track 121 for the groove-shaped material of conveyer belt, such as sieve material track 121 is spiral shape.In object In the use process for expecting optical fiber screening device, with groove type material is first entered the center of support bottom 110 by hopper (not shown) Region, subsequent with groove type material vibrating formula are moved to the edge of support bottom 110, then the edge vibration from support bottom 110 It is moved on the sieve material track 121 of annular side portions 120, and then oscillatory type is moved to and is connected with sieve material 121 output end of track likes Straight vibration feeding track (not shown) on.

Vibrating disk 100 is additionally provided with the area 111 that gathers materials in one of the embodiments, and the area 111 that gathers materials is located at vibrating disk 100 Central region, specifically, gather materials area 111 be located at support bottom 110 central area.Sieve material track 121 is located at vibrating disk 100 Side wall, specifically, sieve material track 121 be located on the inner wall of annular side portions 120.Gather materials area 111 with sieve material track 121 be connected to. In the use process of material optical fiber screening device, with groove type material first enters the area 111 that gathers materials by hopper, then from support bottom It is moved on the sieve material track 121 of annular side portions 120 to 110 edge vibration formula, and then oscillatory type is moved to and sieve material track On the connected straight vibration feeding track of 121 output ends.

There is " anti-material " it is appreciated that traditional sorting mode frequently can lead to material, i.e., partial material is because of vibration feeding The false judgment of machine and the material of align-err is screened and is exported, the appearance of " anti-material " will bring the production and processing in later period Unnecessary trouble, it is serious also result in later product assembly it is bad.It should be noted that in the utility model, with groove Type material 90, should when having the one of groove 91 to face outwardly and being located at the top of sieve material track 121 when sieve material track 121 arranges With groove type material 90 is that arrangement is correct, other arrangement modes in addition to this are align-err, because arranging correct object Material has unique arrangement mode, therefore after the irradiation of fiber optical sensing assemblies 300 arranges correct material, received reflective light intensity Intensity also there is unique threshold value range of light intensity, and then can be by air blowing component 200 by the with groove type object of the align-err Material, which blows off, sieves material track 121, so that it is come back to vibrating disk 100 and is screened again.

Air blowing component 200 is set on vibrating disk 100, and specifically, 200 installation settings of air blowing component is in annular side portions 120 On.Air blowing component 200 and fiber optical sensing assemblies 300 are disposed adjacent in one of the embodiments,.Air blowing component 200 is connected to Compressed air source unit (not shown), in the course of work of material optical fiber screening device, when the reflective light intensity of fiber optical sensing assemblies 300 is super Out when threshold value light intensity, compressed air source unit is supplied gas to air blowing component 200, i.e., compressed air source unit is supplied gas to gas hole 212 with by with groove type Material, which blows off, sieves material track 121, so that it is come back to vibrating disk 100 and is screened again.

Referring to Figure 4 together, Fig. 5, Fig. 6 and Fig. 7, specifically, air blowing component 200 include mounting base 210 and gas source connector 220, mounting base 210 is installed on vibrating disk 100, and mounting base 210 offers the insufflation channel 211 being connected and gas hole 212, Gas hole 212 is connect towards the area 111 that gathers materials, gas source connector 220 with mounting base 210, and gas source connector 220 and insufflation channel 211 connect Logical, gas source connector 220 with compressed air source unit for connecting, so that compressed air source unit can supply gas to gas hole 212.It is corresponding, vibrating disk 100 offer resigning breach 122 in sieve material track 121, specifically, annular side portions 120 offer resigning breach 122.Mounting base 210 insertion resigning breach 122 simultaneously is detachably connected with vibrating disk 100, specifically, mounting base 210 be embedded in resigning breach 122 and with Annular side portions 12 are detachably connected, for example, being connect by screw with annular side portions 120.Air blowing component 200 can be made embedding in this way Enter annular side portions 120, so that with groove material can pass through air blowing component 200.Further, there is mounting base 210 inclination to set The sieve material curved surface 213 set, sieve expect curved surface 213 towards the area 111 that gathers materials.Further, gas hole 212 is located at sieve material curved surface 213.Into The peripheral curved of one step, sieve material curved surface 213 and sieve material track 121 is mutually agreed with, i.e., sieve expect track 121 peripheral curved because It opens up and excalation, and then completion sieve expects the peripheral curved of track 121 to sieve material curved surface 213, expects that curved surface 213 becomes sieve so that sieving Expect a part of the peripheral curved of track 121, the sieve material curved surface 213 need to be passed through when moving to such with groove material vibrating formula, And then material track 121 is sieved convenient for the with groove type material of align-err blows off by air blowing component 200, so that it is come back to vibration Moving plate 100 is screened again.

Further, mounting base 210 includes the mounting portion 214 being connected and embedding part 215, mounting portion 214 and embedding part 215 are respectively positioned on resigning breach 122, and mounting portion 214 is detachably connected with vibrating disk 100, and insufflation channel 211 and gas hole 212 divide It is not set to embedding part 215.215 integral molding of mounting portion 214 and embedding part in one of the embodiments,.Further, Mounting portion 214 and embedding part 215 form T-type structure, corresponding, and resigning breach 122 is T-type structure, and resigning breach 122 includes peace Mouth 1221 and insertion mouth 1222 are filled, resigning breach 122 is located at 121 top of sieve material track, and insertion mouth 1222 is located at sieve material track 121 Bottom, mounting portion 214 agree with installing port 1221, and embedding part 215 is agreed with insertion mouth 1222.It in this way can be preferably by installation Seat 210 is stably and fixedly mounted on vibrating disk 100, so that air blowing component 200 can work at steady-state, to improve Sieve the working efficiency of material.

Also referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 8,300 installation settings of fiber optical sensing assemblies is on vibrating disk 100, specifically Ground, 300 installation settings of fiber optical sensing assemblies is in annular side portions 120.Fiber optical sensing assemblies 300 in one of the embodiments, Including adjustment seat 310, mounting blocks 320, positioning column 330 and fibre-optical probe 340, the neighbouring sieve material track 121 of adjustment seat 310 is installed In on vibrating disk 100, specifically, the neighbouring sieve material track 121 of adjustment seat 310 is installed in annular side portions 120.Mounting blocks 320 are sliding Dynamic to be installed in adjustment seat 310, positioning column 330 is connect with mounting blocks 320, and fibre-optical probe 340 is removably mounted to positioning column 330 On.It can be convenient and fiber optical sensing assemblies 300 be mounted on vibrating disk 100 so rapidly, improve packaging efficiency.

Adjustment seat 310, which offers, in one of the embodiments, adjusts through slot 313, and adjustment seat 310 is provided with adjusting bolt 314, it adjusts bolt 314 and is actively located in and adjust through slot 313, adjust bolt 314 for wearing and adjust through slot 313 and by adjustment seat 310 are fixed on vibrating disk 100, for example, annular side portions 120, which offer, adjusts screw hole 123, adjust bolt 314 and successively wear adjusting Adjustment seat 310 is fixed on vibrating disk 100 by through slot 313 and adjusting screw hole 123.Further, adjustment seat 310 includes being connected Adjustment portion 311 and interconnecting piece 312 adjust through slot 313 and are opened in adjustment portion 311, and adjustment portion 311 is by adjusting bolt 314 and vibration Moving plate 100 connects.Interconnecting piece 312 is far from vibrating disk 100, i.e., interconnecting piece 312 is far from annular side portions 120, specifically, interconnecting piece 312 are located at the top of annular side portions 120, may make between fibre-optical probe 340 and sieve material track 121 there is default spacing in this way, In order to the mobile logical sieving materials track 121 of with groove material vibrating formula.

Adjustment seat 310 is L-type structure in one of the embodiments,.Further, adjustment portion 311 and interconnecting piece 312 1 The molding of body formula, can be improved the structural strength of entire adjustment seat 310 and easy to produce in this way.

Interconnecting piece 312 is provided with caging bolt 315 in one of the embodiments, and mounting blocks 320 offer installation through slot 321, caging bolt 315 wears installation through slot 321 and mounting blocks 320 is fixed on interconnecting piece 312.Pass through caging bolt in this way 315 and installation through slot 321 can be according to default between actual screening environment adjustment fibre-optical probe 340 and sieve material track 121 Spacing, to improve the accuracy of material screening.

Positioning column 330 is removably mounted to mounting blocks 320 in one of the embodiments, and positioning column 330 is located at installation The one end of block 320 far from adjustment portion 311.Further, positioning column 330 is equipped with positioning bolt 331 and offers probe through-hole 332, positioning bolt 331 is movably set in positioning column 330, and the movable end of positioning bolt 331 is located at probe through-hole 332, optical fiber Probe 340 wears probe through-hole 332, and the movable end of positioning bolt 331 is abutted with fibre-optical probe 340 to consolidate fibre-optical probe 340 It is scheduled on positioning column 330.Installation fibre-optical probe 340 that in this way can be more convenient improves assembling convenient for the assembling of complete machine Efficiency.

Further, fibre-optical probe 340 has optical fiber probe 341, the bending setting of optical fiber probe 341,341 court of optical fiber probe It is arranged to gas hole 212, and the spacing of the end of optical fiber probe 341 and sieve material track 121 is greater than the thickness of with groove type material, It in this way can be to avoid the movement of the groove-shaped material of 341 barrier strip of optical fiber probe.It is appreciated that fibre-optical probe 340 is for connecting light Fiber sensor (not shown), the end of optical fiber probe 341 are provided with transmitting terminal and receiving end, and it is special that transmitting terminal can be launched Light beam, such as infrared light etc., receiving end can be received by the infrared signal after the reflection of with groove type material different surfaces Equal reflective light intensities.Air blowing component 200 is connected to compressed air source unit.When fibre optical sensor passes through the reflection that fibre-optical probe 340 receives The intensity of light intensity be not preset threshold value range of light intensity when, compressed air source unit starts at once and by air blowing component 200 by the arrangement The with groove type material of mistake, which blows off, sieves material track 121, so that it is come back to vibrating disk 100 and is screened again, realizes essence True ground material screening improves the screening efficiency of with groove type material.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of material optical fiber screening device, which is characterized in that described including vibrating disk, air blowing component and fiber optical sensing assemblies Vibrating disk is provided with sieve material track, and the vibrating disk is used to drive with groove type material along predetermined direction described when vibrated Sieve material moving on rails, the air blowing component and the fiber optical sensing assemblies are respectively arranged on the vibrating disk, wherein described The gas hole of air blowing component is located on the side wall of the sieve material track, and the fibre-optical probe of the fiber optical sensing assemblies is blown described in Stomata, the air blowing component are used to send when the reflective light intensity of the fiber optical sensing assemblies exceeds threshold value light intensity to the gas hole Gas is to expect track for the blow off sieve of the with groove type material.

2. material optical fiber screening device according to claim 1, which is characterized in that the vibrating disk, which is additionally provided with, to gather materials Area, the area that gathers materials are located at the central region of the vibrating disk, and the sieve material track is located at the side wall of the vibrating disk, the collection Expect that orbit connection is expected in area and the sieve.

3. material optical fiber screening device according to claim 1, which is characterized in that the fiber optical sensing assemblies include adjusting Seat, mounting blocks, positioning column and fibre-optical probe, the adjustment seat adjacent to sieve material track installation on the vibrating disk, institute It states mounting blocks to be slidably mounted in the adjustment seat, the positioning column is connect with the mounting blocks, and the fibre-optical probe is detachable It is installed on the positioning column.

4. material optical fiber screening device according to claim 3, which is characterized in that it is logical that the adjustment seat offers adjusting Slot, the adjustment seat are provided with adjusting bolt, and the adjusting bolt is actively located in the adjusting through slot, and the adjusting bolt is used In wearing the adjusting through slot and the adjustment seat be fixed on the vibrating disk.

5. material optical fiber screening device according to claim 4, which is characterized in that the adjustment seat is L-type structure.

6. material optical fiber screening device according to claim 5, which is characterized in that the adjustment seat includes the tune being connected Section portion and interconnecting piece, the adjusting through slot are opened in the adjustment portion, and the adjustment portion passes through the adjusting bolt and the vibration Moving plate connection, the interconnecting piece is far from the vibrating disk.

7. material optical fiber screening device according to claim 6, which is characterized in that the adjustment portion and the interconnecting piece one The molding of body formula.

8. material optical fiber screening device according to claim 6, which is characterized in that the interconnecting piece is provided with limit spiral shell Bolt, the mounting blocks offer installation through slot, and the caging bolt wears the installation through slot and the mounting blocks are fixed on institute It states on interconnecting piece.

9. material optical fiber screening device according to claim 8, which is characterized in that the positioning column is removably mounted to institute State the one end of mounting blocks far from the adjustment portion.

10. material optical fiber screening device according to claim 9, which is characterized in that the positioning column is equipped with positioning bolt And probe through-hole is offered, the positioning bolt is movably set in the positioning column, and the movable end of the positioning bolt is located at The probe through-hole, the fibre-optical probe wear the probe through-hole, the movable end of the positioning bolt and the fibre-optical probe It abuts so that the fibre-optical probe is fixed on the positioning column.