KR101754286B1

KR101754286B1 - Salt water spraying testing instrument

Info

Publication number: KR101754286B1
Application number: KR1020150174943A
Authority: KR
Inventors: 변창세; 한상빈
Original assignee: 주식회사 포스코
Priority date: 2015-12-09
Filing date: 2015-12-09
Publication date: 2017-07-06
Also published as: KR20170068112A

Abstract

The present invention relates to a salt water spray tester. A brine spray tester according to an embodiment of the present invention includes a main body including a chamber and an entrance; A salt water spray unit installed in the chamber for spraying saline water; A rotor rotatably installed in the chamber and rotated in association with a driving unit installed in the main body; A specimen fixing unit including an upper and a lower slider having one side slidably mounted on the rotor so as to be drawn out to the entrance and having a receiving space formed on the other side thereof, and a mounting guide mounted on the receiving space; An angle adjuster connected to the mounting guide to adjust the angle of the specimen; A camera module installed in the lower portion of the chamber so as to be movable in X and Y axis directions; And an observation unit for inspecting the surface of the specimen with the camera module.

Description

[0001] SALT WATER SPRAYING TESTING INSTRUMENT [0002]

The present invention relates to a salt water spray tester. More particularly, the present invention relates to a brine spray tester for checking the degree of change of a surface of a test piece by brine.

The salt water spray tester is a method in which salt water is usually sprayed on the surface of a steel sheet for several minutes or several hours, then spraying is stopped, the atmosphere is released under the condition of a salt water spray tester, Data is being generated. This will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view schematically showing a salt spray tester according to the related art. In FIG. 1, a spray tower 4 is vertically installed at the center of a chamber, And the brine is stored in the lower portion of the chamber 3 and the cross bar 5 is installed at the end of the chamber 3 to form a specimen 1) is tilted at an angle of about 20 degrees to the upper portion of the cross bar (5). A lid 6 is provided on the upper part of the chamber 3 so as to be openable and closable to constitute a salt water spray tester 2.

Therefore, in the conventional salt spray tester 2, the salt water stored in the lower part of the chamber 3 is transferred to the upper direction by using the spray tower 4, and misted salt water is sprayed through the injection port 4a , The specimen surface 1a is corroded and the lid 6 is opened at any time to observe the corrosion behavior or to take out the specimen 1. [

However, in the conventional salt spray tester 2, a large amount of outside air is introduced into the chamber 3 by opening the cover 6 occasionally to observe the corrosion behavior of the surface 1a of the specimen, The working conditions within the specimen 1 are different, which makes it impossible to judge the degree of corrosion of the specimen 1 accurately. In addition, the test piece 1 is tilted and mounted on the cross bar 5, and the cross bar 5 has a fixed inclination angle, so that the cross bar 5 must be inevitably replaced in order to perform various angles.

KR 1996-015307 Y1

It is an object of the present invention to provide a brine spray tester capable of easily adjusting the angle of a specimen and capable of easily detaching and attaching a specimen from the outside.

It is another object of the present invention to provide a brine spray tester capable of easily observing corrosion patterns on the surface of a specimen.

In order to achieve the above object,

A brine spray tester according to an embodiment of the present invention includes a main body including a chamber and an entrance;
A salt water spray unit installed in the chamber for spraying saline water;
A rotor rotatably installed in the chamber and rotated in association with a driving unit installed in the main body;
A specimen fixing part including an upper and a lower slider having one side slidably mounted on the rotor so as to be drawn out to the entrance and having a receiving space formed on the other side thereof, and a mounting guide mounted on the receiving space and on which the specimen is mounted;
An angle adjuster connected to the mounting guide to adjust the angle of the specimen;
A camera module installed in the lower portion of the chamber so as to be movable in X and Y axis directions; And
And an observation part for inspecting the surface of the specimen with the camera module.

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The brine spray tester according to an embodiment of the present invention includes a pressurizing cylinder installed in the main body to press the upper and lower sliders through a pressurizing piston rod that enters the chamber and to draw them out to the entrance;

As shown in FIG.

Further, in the salt spray tester according to an embodiment of the present invention, the salt spray unit may include a salt water storage space formed in a lower portion of the chamber;

A pump installed outside the main body to pump saline in the saline storage space;

A salt water conveying pipe connected to the pump and connected to the one side and the upper part of the main body for conveying saline water; And

A spray body installed at an upper portion of the chamber so as to communicate with the brine delivery pipe and spraying mist water in the form of a mist;

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In the salt spray tester according to an embodiment of the present invention, the rotor is axially connected at one end to a driving unit provided outside the main body, the other end is connected to the inside of the main body, A guide rail may be symmetrically formed in an inverted triangle so that the upper and lower sliders can be slidably assembled.

Further, in the salt spray tester according to the embodiment of the present invention, the rotor can be rotated more easily by bearing a bearing between the axis of the other end and the main body.

In the saline spray tester according to an embodiment of the present invention, the specimen fixing unit may include upper and lower sliders having rail grooves corresponding to the guide rails formed on both sides of one surface, and accommodating spaces formed at the center of the other surface.

A mounting guide having both side surfaces thereof axially connected to the receiving space, one side of which is connected to a ball joint, the other side of which is connected to the angle adjusting portion, and in which a mounting groove for mounting the test piece is formed;

A first roller provided on both sides of the inlet of the mounting groove to fix the specimen;

An elastic body incorporated in the mounting guide to support the first roller;

A second roller provided at both inner sides of the mounting groove formed to be relatively wider than the inlet of the mounting groove to fix the specimen; And

A transporter connected to a lower portion of the mounting guide by a ball joint and horizontally transportable in a receiving space and connected to the angle adjusting unit;

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Further, in the salt spray tester according to an embodiment of the present invention, the angle adjusting unit may include a first motor installed in a receiving space;

A first transfer screw rotated in association with the first motor and disposed in the accommodating space to be connected to the conveyor; And

An angle adjusting cylinder disposed in the side space formed by expanding the accommodating space, wherein the angle adjusting cylinder is connected to the other shaft of the mounting guide and the angle adjusting piston rod;

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Further, in the brine spray tester according to an embodiment of the present invention, the observation unit may include a second motor installed on one side surface of the main body;

A second conveying screw which rotates in conjunction with the second motor and is installed across the chamber;

An X-axis feeder shaft-connected to the second feed screw;

A Y-axis conveyor slidably mounted on the X-axis conveyor, the Y-axis conveyor having a camera module installed thereon;

A transfer cylinder installed on the outside of the main body and horizontally transferring the Y-axis transfer member through a transfer piston rod having a magnetic substance attached to an end thereof; And

A transfer guide installed in the chamber in a direction intersecting with the second conveyance screw and disposed between the specimens to guide horizontal conveyance of the Y axis conveyor;

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These solutions will become more apparent from the following detailed description of the invention based on the attached drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor should appropriately define the concept of the term in order to describe its invention in the best way possible It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to the embodiment of the present invention, the specimen can be easily attached and detached from the outside of the body through the rotor and the specimen fixing part, and the angle of the specimen can be easily adjusted through the angle adjusting part, .

In addition, the observation part can easily observe the corrosion behavior of the surface of the specimen inside the body, and the accuracy of the test can be improved.

1 is a sectional view schematically showing a conventional salt spray tester.
FIG. 2 is a cross-sectional view of a salt water spray tester according to an embodiment of the present invention, as viewed from the front; FIG.
3 is a cross-sectional view of a salt water spray tester according to an embodiment of the present invention.
4 to 7 are enlarged views showing essential parts of a salt water spray tester according to an embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Although not defined differently, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 3, the brine spray tester 2 according to an embodiment of the present invention has a door 10b formed at the lower left of the main body 10 so as to open the chamber 3. Here, the main body 10 is provided with a door 10c on the side where the entrance 10b is formed, thereby opening and closing the entrance 10b as necessary.

The chamber 3 is provided with a salt spray unit 20 at an upper portion thereof. The rotor 30 is rotatably installed in the inside of the main body 10. The rotor 30 is rotatably supported by a drive unit 11 that can be operated by a conventional servomotor provided outside the main body 10 And the upper and lower sliders 40a and 40b of the specimen fixing part 40 are slidably assembled to the upper and lower parts.

The rotor 30 is axially connected to the inner side of the main body 10 at the other end opposite to the one end connected to the drive unit 11 and the bearings 32 are interposed between the rotor 30 and the main body 10, Rotation is possible.

The specimen fixing unit 40 includes an upper slider 40a slidably assembled on the upper portion of the rotor 30, a lower slider 40b disposed opposite to the upper slider 40a, and upper and lower sliders 40a And a mounting guide 43 provided in a receiving space 42 formed in the housing 40b. The specimen 1 is mounted on the mounting guide 43.

The lower slider 40b is slid from the rotor 30 to the entrance 10b and the specimen 1 is inserted into the mounting guide 43 provided in the receiving space 42 of the lower slider 40b So that the specimen 1 can be easily attached and detached from the outside of the main body 10. After the lower slider 40b is received in the chamber 3, the driving unit 11 is driven to rotate the rotor 30 and slide the upper slider 40a The specimen 1 can be mounted on the mounting guide 43 provided in the receiving space 42 of the upper slider 40a.

Here, the pressurizing cylinder 12 may be installed in the main body 10 for easy withdrawal of the upper and lower sliders 40a and 40b. That is, the pressure cylinder 12 is provided on the side surface of the main body 10 adjacent to the upper and lower sliders 40a and 40b, so that the pressure piston rod 12a enters the chamber 3 during its operation, The lower sliders 40a and 40b are pushed in the left direction in the figure so that they can be easily drawn out to the entrance 10b.

The mounting guide 43 is connected to an angle adjuster 50 capable of adjusting the angle of the specimen 1 so that the entirety of the specimen 1 during the operation of the angle adjuster 50 is rotated Or one side may flow to the left or the right, and this can be defined as twisting. Therefore, it is possible to spray the brine on the specimen surface 1a by using the brine spraying part 20 while adjusting the angle of the specimen 1 by the angle adjusting part 50.

As described above, the erosion pattern of the specimen surface 1a which is corroded due to the spraying of the brine is applied to the lower part of the chamber 3 by using the observation part 60 including the camera module 64a provided so as to be transportable in the X- and Y- . That is, by observing the specimen surface 1a in the chamber 3 through the camera module 64a and checking the degree of change, the accuracy of the salt spray test can be easily improved.

The brine spray unit 20 is installed on the outside of the main body 10 and on the upper part of the chamber 3 so that the brine spray can be sprayed in a circulating manner with easy securing of the chamber 3. That is, a salt water storage space 10a is formed in a lower portion of the chamber 3, and a pump 21 is installed at a lower left side of the body 10 to pump salt water stored in the salt water storage space 10a And a brine transfer pipe 22 connected to the pump 21 by piping are disposed on the side and upper part of the main body 10 to transfer the brine. And a spray body 23 communicating with the brine delivery pipe 22 at the upper portion of the chamber 3 and spraying the mist generated by the brine sprayed is arranged so that mist type brine is sprayed onto the surface 1a of the specimen And the test is carried out.

4 to 5, the rotor 30 has a guide rail 31 symmetrically formed on the upper and lower surfaces thereof and viewed in an inverted triangle as viewed from the upper surface thereof, The lower sliders 40a and 40b can be easily assembled. That is, the rail grooves 41 corresponding to the guide rails 31 are formed on both sides of the lower slider 40a and on both sides of the upper surface of the lower slider 40b, so that the upper and lower sliders 40a, The upper and lower sliders 40a and 40b can be easily assembled, and the upper and lower sliders 40a and 40b can be easily slidable.

The upper slider 40a has a receiving space 42 formed at the center of its upper surface. The lower slider 40b receives the mounting guide 43 on which the test piece 1 is mounted by forming the receiving space 42 at the center of the lower surface thereof. The mounting guide 43 is formed at its center with a mounting groove 43a on which the test piece 1 is mounted.

The mounting groove 43a is formed in a shape of a vertically downwardly bulged shape which is relatively wider inside than the entrance where the test piece 1 enters. A first roller 45 for fixing the test piece 1 is provided on both sides of the inlet of the mounting groove 43a and a second roller 47 is disposed on both sides of the mounting groove 43a, And an elastic member 46 for elastically supporting the first roller 45 in the horizontal direction is embedded in the mounting guide 43. [ Therefore, the specimen 1 can be easily mounted and fixed to the mounting guide 43.

In addition, the mounting guide 43 is installed so as to be axially connected to the accommodating space 42, with the left shaft connected to the first ball joint 43b and the right shaft connected to the angle adjusting unit 50 . And a second ball joint 43c is provided at a lower portion of the second ball joint 43c so as to be connected to a conveyor 48 horizontally transportable in the accommodation space 42 by the second ball joint 43c, A spring 44 for elastically supporting the spring 44 in the vertical direction is embedded in the lower portion so that the flow can be made up and down.

The conveyor 48 is accommodated in the accommodation space 42 and is disposed at the lower portion of the mounting guide 43 so that the upper portion is connected to the second ball joint 43c and the center portion is connected to the first feed screw (52).

3 to 5, the angle adjusting unit 50 includes a first motor 51, which can be implemented by a conventional servomotor, is installed at the center of the right side of the accommodation space 42 in the drawing, A first conveying screw 52 that is rotated in conjunction therewith is disposed in the receiving space 42 and connected to the conveyor 48. An angle adjusting cylinder 53 is connected to the side space 42a formed by extending the accommodation space 42 and connected to the other shaft of the mounting guide 43 and the angle adjusting piston rod 53a by a pin.

Therefore, the horizontal movement of the conveyor 48 by the driving of the first motor 51 and the driving of the angle adjusting cylinder 53 allow the angle of the mounting guide 43 to flow to effectively corrode the specimen 1 easily So that it can be adjusted. That is, the twist defined above can be easily achieved.

As shown in FIGS. 2 and 6, the observation section 60 observes and examines the corroding mode of the specimen surface 1a that has been corroded due to the spraying of brine, while moving the camera module 64a more easily in the directions of the X and Y axes A second motor 61 that can be operated by a normal servomotor is provided on the lower right side of the main body 10 in the figure. The second conveying screw 62 is installed across the chamber 3 and rotates in conjunction with the second motor 61. The X axis conveyer 63 is axially connected to the second conveying screw 62, And a Y-axis feeder 64 made of a metal is slidably installed on the X-axis feeder 63. The Y- The camera module 64a is installed on the Y axis conveyor 64 and is conveyed in the X and Y axis directions along the X axis conveyor 63 and the Y axis conveyor 64. [

A transfer guide 66 is provided in the chamber 3 in a direction intersecting with the second transfer screw 62. The conveying guide 66 is disposed between the specimens 1 to guide the horizontal conveyance of the Y-axis conveyor 64. Here, a transfer cylinder 65 is provided outside the main body 10 so that the Y-axis transfer member 64 can be easily transferred from the X-axis transfer member 63 to the transfer guide 66, The magnetic body 65b is attached to the end of the transfer piston rod 65a which is drawn out during the operation.

Hereinafter, a salt spray test method using a salt spray tester according to an embodiment of the present invention will be described.

As shown in Figs. 2 and 7, the door 10c is opened and the pressurizing cylinder 12 is driven to draw the lower slider 40b to the entrance 10b. That is, the lower slider 40b is drawn out to the entrance 10b while sliding by the pressurizing piston rod 12a of the pressurizing cylinder 12. At this time, in the case of the mounting guide 43 on which the test piece 1 is mounted, do.

Therefore, the second roller 47 provided in the mounting groove 43a formed in the mounting guide 43 is located inside the mounting groove 43a toward the inlet. When the test piece 1 is inserted between the first rollers 45 and enters the inside of the mounting groove 43a in this state, the second roller 47 is moved along the test piece 1 to the inside of the mounting groove 43a And is fixed while moving inside. By repeating this process, a plurality of specimens 1 can be mounted on the mounting guide 43 arranged on the lower slider 40b.

When the mounting of the test piece 1 to the lower slider 40b is completed, the lower slider 40b is pushed into the chamber 3 to be in the original position, and the driving unit 11 is driven to rotate the rotor 30 The positions of the lower slider 40b and the upper slider 40a are changed. Thereafter, the upper slider 40a is pulled out in the same manner to mount the test piece 1. The door 10c is closed and the pump 21 is operated to pump the salt water stored in the salt water storage space 10a under the chamber 3 to the salt water transport pipe 22 So that the jetting member 23 communicating with the brine delivery pipe 22 is sprayed in the form of mist from the top of the chamber.

As shown in FIGS. 2 to 3 and 5, the specimen 1 mounted on the upper slider 40a is corroded by the brine in a state in which the entire specimen 1 is inclined at an angle of about 20 degrees, The mounting guide 43 connected to the conveyor 48 and the second ball joint 43c is rotated by the second conveying screw 52 by rotating the first conveying screw 52, And the joint 43c is rotated to form an angle.

Thereafter, the first motor 51 is driven to feed the conveying member 48 forward and backward while rotating the first conveying screw 52 in the normal direction or the reverse direction, thereby moving the mounting guide 43 connected to the second ball joint 43c ) Perform the same operation, thereby causing corrosion of the specimen 1 by twisting the specimen 1 back and forth.

Further, the angle adjusting cylinder 53 is driven forward and backward by the additional operation to move the angle adjusting piston rod 53a forward and backward, so that the mounting guide 43 connected to the angle adjusting piston rod 53a flows left and right with reference to the first ball joint 43b . Therefore, the test piece 1 can be sprayed evenly on the surface 1a of the specimen 1 while being twisted before, after, left, and right due to such an operation, so that easy corrosion can proceed.

If the brine spray is performed for a predetermined time, the driving unit 11 is driven to rotate the rotor 30 so as to have a waiting time so that the specimen 1 having undergone corrosion moves to the lower portion of the chamber 3, The standby specimen 1 is positioned above the chamber 3. That is, the specimen 1 mounted on the lower slider 40b is positioned at the upper portion of the chamber 3. Thereafter, salt water is sprayed on the surface 1a of the specimen in the same manner to proceed corrosion.

Here, the specimen 1 moved to the lower part of the chamber 3 by the rotation of the rotor 30 is inspected in a state in which the specimen 1 is tilted vertically. That is, the first motor 51 is driven to return the conveying member 48 to rotate the mounting guide 43 to rotate the specimen 1 in the upright position, through the observation unit 60, .

2 to 3 and 6, in the inspection method using the observation unit 60, the second motor 61 is rotated to rotate the second conveying screw 62, and the X-axis conveyer 63 connected to the X- And is disposed between the transporting cylinder 65 and the transporting guide 66.

The Y-axis feeder 64 is fed toward the feed guide 66 in a state in which the feed cylinder 65 is driven to pull out the feed piston rod 65a to bring the magnetic body 65b into contact with the Y-axis feeder 64, . Accordingly, while the Y-axis conveyor 64 is conveyed in the Y-axis direction along the conveyance guide 66, the upper camera module 64a observes and examines the corrosion behavior of the specimen surface 1a.

When the inspection of the specimen surface 1a using the camera module 64a is completed, the conveying cylinder 65 is driven to move back the conveying piston rod 65a, whereby the Y-axis conveying member 64 is rotated by the magnetic body 65b And is conveyed in the X-axis direction to inspect the next specimen surface 1a. Therefore, a continuous inspection of the specimen surface 1a is performed.

When the salt water spray test is completed, the door 10c of the door 10b is opened to sequentially pull out the upper and lower sliders 40a and 40b to separate the specimen 1 from the mounting guide 43 And a new specimen 1 is mounted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: Specimen 1a: Specimen surface
2: Salt water spray tester 3: Chamber
4: Spray Top 4a: Spout
5: crossbar 5: cover
10: main body 10a: brine storage space
10b: doorway 10c: door
11: driving part 12: pressure cylinder
12a: pressure piston rod 20: brine spray part
21: pump 22: brine pipeline
23: Dispenser 30: Rotor
31: guide rail 32: bearing
40: specimen fixing part 40a: upper slider
40b: lower slider 41: rail groove
42: accommodation space 42a: side space
43: mounting guide 43a: mounting groove
43b: first ball joint 43c: second ball joint
44: spring 45: first roller
46: elastic body 47: second roller
48: Recipient 50: Angle adjustment section
51: first motor 52: first feed screw
53: Angle adjusting cylinder 53a: Angle adjusting piston rod
60: observation part 61: second motor
62: 2nd feed screw 63: X-axis feeder
64: Y-axis feeder 64a: camera module
65: Feed cylinder 65a: Feed piston rod
65b: magnetic substance 66: conveying guide

Claims

A body including a chamber and an entrance;
A salt water spray unit installed in the chamber for spraying saline water;
A rotor rotatably installed in the chamber and rotated in association with a driving unit installed in the main body;
A specimen fixing part including an upper and a lower slider having one side slidably mounted on the rotor so as to be drawn out to the entrance and having a receiving space formed on the other side thereof, and a mounting guide mounted on the receiving space and on which the specimen is mounted;
An angle adjuster connected to the mounting guide to adjust the angle of the specimen;
A camera module installed in the lower portion of the chamber so as to be movable in X and Y axis directions; And
An observing unit for inspecting a surface of the specimen with the camera module;
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The method according to claim 1,
A pressurizing cylinder provided in the main body to press the upper and lower sliders through a pressurizing piston rod that enters the chamber and to draw the slider to the entrance;
Further comprising a salt spray tester.

The method according to claim 1,
Wherein the salt water spraying portion comprises a salt water storage space formed in a lower portion of the chamber;
A pump installed outside the main body to pump saline in the saline storage space;
A salt water conveying pipe connected to the pump and connected to the one side and the upper part of the main body for conveying saline water; And
A spray body installed at an upper portion of the chamber so as to communicate with the brine conveying pipe and spraying mist water in the form of mist;
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The method according to claim 1,
The rotor is axially connected to the driving unit provided on the outside of the main body, the other end is connected to the inside of the main body, and the upper and lower sliders of the specimen fixing unit are slidable in an inverted triangle A salt spray test machine in which guide rails are symmetrically formed.

The method of claim 5,
Wherein the specimen fixing portion includes upper and lower sliders each having a rail groove corresponding to the guide rail and formed on both sides of the one surface,
A mounting guide having a mounting groove for mounting the test piece, the mounting guide being installed on both sides of the accommodating space so as to be axially connected to each other, one axis being connected to the first ball joint, the other axis being connected to the angle adjusting unit,
A first roller provided on both sides of the inlet of the mounting groove to fix the specimen;
An elastic body incorporated in the mounting guide to support the first roller;
A second roller provided at both inner sides of the mounting groove formed to be relatively wider than the inlet of the mounting groove to fix the specimen; And
A conveyor connected to a lower portion of the mounting guide by a second ball joint and connected horizontally to the accommodating space and connected to the angle adjusting unit;
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The method of claim 6,
The angle adjusting unit may include: a first motor installed in the accommodation space;
A first conveying screw rotated in association with the first motor and disposed in the receiving space to be connected to the conveyor; And
An angle adjusting cylinder disposed in the side space formed by expanding the accommodating space, wherein the angle adjusting cylinder is connected to the other shaft of the mounting guide and the angle adjusting piston rod;
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The method according to claim 1,
The observation unit may include a second motor installed on one side of the main body;
A second conveying screw which rotates in conjunction with the second motor and is installed across the chamber;
An X-axis feeder shaft-connected to the second feed screw;
A Y-axis conveyor slidably mounted on the X-axis conveyor, the Y-axis conveyor having a camera module installed thereon;
A transfer cylinder installed on the outside of the main body and horizontally transferring the Y-axis transfer member through a transfer piston rod having a magnetic substance attached to an end thereof; And
A conveyance guide installed in the chamber in a direction crossing the second conveyance screw and disposed between the specimens to guide the horizontal conveyance of the Y axis conveyor;
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