CN217751395U - Marking device - Google Patents

Abstract

The utility model provides a marking device. The scribing device comprises a supporting frame, a sliding assembly and a cutter assembly, wherein the sliding assembly comprises a first sliding part and a second sliding part, the first sliding part is connected with the supporting frame and can move relative to the supporting frame along a first direction, the second sliding part is connected with the first sliding part and can move relative to the first sliding part along a second direction, and the first direction is perpendicular to the second direction; the cutter assembly comprises a cutter bar and at least one blade, the blade is connected with the cutter bar, the cutter bar is inserted on the second sliding piece and can move along the vertical direction relative to the second sliding piece, and the cutter bar can rotate relative to the second sliding piece so that the rotating axis of the blade is consistent with the first direction or the rotating axis of the blade is consistent with the second direction. The utility model provides a marking device can reduce the error of mar.

Description

Marking device

Technical Field

The utility model relates to a film and detect technical field, especially relate to a marking device.

Background

The grid marking method is suitable for evaluating the adhesive capacity of the coating film, and is a common evaluation method at home and abroad. During specific operation, a cutting tool is used for cutting the coating film until scratches with different shapes are formed on the substrate, the coating film is torn off after being adhered by an adhesive tape or is subjected to stamping deformation by a stamping machine, then the peeling condition of the coating is checked, and the adhesion capacity of the coating film is graded.

In the prior art, a cross-shaped or groined scratch is formed by using a blade matched with a ruler to mark a sample wafer.

However, when the scratch is formed by such a scribing method, a scratch error is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a marking device can reduce the error of mar.

The utility model provides a marking device, which comprises a supporting frame, a sliding component and a cutter component,

the sliding assembly comprises a first sliding part and a second sliding part, the first sliding part is connected with the supporting frame and can move relative to the supporting frame along a first direction, the second sliding part is connected with the first sliding part and can move relative to the first sliding part along a second direction, and the first direction is vertical to the second direction;

the cutter assembly comprises a cutter bar and at least one blade, the blade is connected with the cutter bar, the cutter bar is inserted on the second sliding piece and can move along the vertical direction relative to the second sliding piece, and the cutter bar can rotate relative to the second sliding piece so that the rotating axis of the blade is consistent with the first direction or the rotating axis of the blade is consistent with the second direction.

In a possible implementation manner, the utility model provides a marking device, cutter arbor include linkage segment and extension, and the extension is connected with the first end of linkage segment, and the blade is connected with the second end of linkage segment, and the extension is inserted and is established on the second slider, and the extension has first spacing portion, and the one side that the second slider deviates from the blade has the spacing portion of second, and first spacing portion and the spacing portion phase-match of second, first spacing portion and the spacing portion of second are used for restricting the turned angle of cutter arbor.

In a possible implementation manner, the utility model provides a marking device, first spacing portion be the rectangular block, the spacing portion of second for with rectangular block assorted spacing groove, the rectangular block is inserted and is established in the spacing groove, the extension drives the rectangular block and removes along vertical direction to make the rectangular block break away from the spacing groove.

In a possible implementation manner, the utility model provides a marking device, cutter arbor still include handheld section, and handheld section is connected with the one end that the extension deviates from the linkage segment.

In a possible implementation manner, the utility model provides a marking device, the cutter assembly further includes a spring and an adjusting piece, the spring and the adjusting piece are both sleeved on the extension section, and the adjusting piece is located between the spring and the blade, the adjusting piece is connected with the extension section, so that the extension section drives the adjusting piece to move;

one end of the spring along the elastic direction is abutted with one surface, facing the blade, of the second sliding piece, and the other end of the spring along the elastic direction is abutted with the end face of the adjusting piece.

In a possible implementation manner, the utility model provides a marking device, the outer wall of extension section has the external screw thread, the regulating part have with external screw thread assorted internal thread, the regulating part passes through internal thread and external screw thread connection with the extension section.

In a possible implementation manner, the utility model provides a marking device, the support frame comprises a bottom plate, a top frame and two side plates, each side plate is respectively arranged at two opposite sides of the bottom plate, the top frame is arranged above the bottom plate and is connected with the side plates, and the first sliding part is connected with each side plate;

the bottom plate is provided with an operation window which is opposite to the blade.

In a possible implementation manner, the utility model provides a marking device offers the mounting groove on the curb plate, and first slider is inserted and is established on the mounting groove, and first slider part is located the outside of curb plate.

In a possible implementation manner, the utility model provides a marking device, the middle zone of first slider has the spout, second slider and spout sliding connection, and the extending direction of spout is unanimous with the second direction.

In a possible implementation manner, the utility model provides a marking device, still include at least one first fastener and at least one second fastener, first fastener is used for fixing first slider on the support frame, and the second fastener is used for fixing the second slider on first slider.

The utility model provides a marking device, through setting up support frame, slip subassembly and cutter unit spare, wherein, the slip subassembly includes first slider and second slider, and cutter unit spare includes cutter arbor and blade, is connected blade and cutter arbor, and the cutter arbor is inserted and is established on the second slider, and the second slider is connected with first slider, and first slider is connected with the support frame. When the direction of the rotation axis of the blade is consistent with the second direction, and the first sliding piece is pulled to move relative to the supporting frame along the first direction, the blade can mark a line along the first direction. And then the cutter bar is moved in the vertical direction relative to the second slide and rotated relative to the second slide so that the direction of the rotation axis of the blade coincides with the second direction, and the blade can scribe a line in the second direction when the second slide is pulled to move in the second direction relative to the first slide. Compared with the prior art, the blade can avoid manual operation errors under the guiding action of the first sliding part and the second sliding part, mutually perpendicular scribing lines are scribed, and therefore errors of scratches are reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a scribing apparatus provided in an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a scribing apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a tool bar in the scribing apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a second sliding member in the scribing apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a cutter assembly in the scribing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic view of the internal structure of fig. 1.

Description of reference numerals:

100-a support frame;

110-a base plate;

111-an operating window;

120-top frame;

130-side plate;

200-a sliding assembly;

210-a first slide;

211-a chute;

220-a second slide;

221-a second limiting part;

222-a concave groove;

300-a cutter assembly;

310-a cutter bar;

311-connecting segment;

312-an extension;

3121-a first stop;

313-a handheld segment;

320-a blade;

330-a spring;

340-an adjustment member;

400-a first fastener;

500-second fastener.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The terms "first," "second," and "third" (if any) in the description and claims of this invention and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or maintenance tool.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Among the prior art, utilize blade cooperation ruler to rule on the sample wafer, form cross and groined type mar, wherein, groined type mar includes that two length equal vertical lines and two length equal horizontal lines, and every vertical line all is perpendicular and crossing with two horizontal lines, and the interval is the same between two horizontal lines and the interval between two vertical lines. When the blade and the ruler are used for scribing, the ruler needs to be moved after the ruler is used for scribing a first scribing line, the ruler is perpendicular to the first scribing line, then a second scribing line perpendicular to the first scribing line is scribed, however, errors are prone to being caused due to the fact that the ruler is manually moved in a visual inspection mode, the blade has a force effect on the ruler in the scribing process, and the ruler is prone to being deviated. Therefore, the scratch formed in this way has large error and poor accuracy. The scratch generated in this manner changes the peeling of the coating at the scratch, compared to the standard scratch, and thus the evaluation of the adhesion rating of the coating film deviates.

In order to solve the technical problem, the utility model provides a marking device, through setting up first slider and second slider, first slider and second slider slip direction mutually perpendicular, when first slider and second slider drive cutter unit spare and rule on the appearance piece that awaits measuring, the moving direction of first slider and second slider produces the restriction to cutter unit spare's moving direction, makes cutter unit spare can draw mutually perpendicular's marking off to reduce the error of mar.

Fig. 1 is a schematic structural view of a scribing apparatus provided by an embodiment of the present invention, and fig. 2 is another schematic structural view of the scribing apparatus provided by an embodiment of the present invention.

Referring to fig. 1 and 2, the present invention provides a scribing apparatus including a support frame 100, a slide assembly 200, and a cutter assembly 300.

The sliding assembly 200 includes a first sliding member 210 and a second sliding member 220, the first sliding member 210 is connected to the supporting frame 100, and the first sliding member 210 can move along a first direction relative to the supporting frame 100, the second sliding member 220 is connected to the first sliding member 210, and the second sliding member 220 can move along a second direction relative to the first sliding member 210, wherein the first direction is perpendicular to the second direction.

The cutter assembly 300 includes a cutter bar 310 and at least one blade 320, the blade 320 is connected with the cutter bar 310, the cutter bar 310 is inserted on the second slider 220, and the cutter bar 310 is movable in a vertical direction with respect to the second slider 220, and the cutter bar 310 is rotatable with respect to the second slider 220 such that a rotational axis of the blade 320 coincides with the first direction or a rotational axis direction of the blade 320 coincides with the second direction.

When the scribing device is used, the scribing device is placed on a sample to be tested, the rotation axis direction of the blade 320 is consistent with the second direction, the first sliding part 210 is pulled to move along the second direction, and the first sliding part 210 drives the cutter to scribe on the sample to be tested through the second sliding part 220. The cutter bar 310 is pulled upwards, the cutter bar 310 is rotated by 90 degrees, so that the direction of the rotation axis of the blade 320 is consistent with the first direction, the cutter bar 310 is loosened, the second sliding part 220 is pulled to move along the first direction, and the second sliding part 220 drives the cutter to scribe lines on the sample piece to be measured.

Referring to fig. 1, the cutter assembly 300 includes a blade 320 so that a cross-shaped scribe can be scribed using the scribing apparatus.

Referring to fig. 2, the cutter assembly 300 includes two blades 320, the two blades 320 being located at opposite sides of the cutter bar 310, and the two blades 320 being arranged in parallel, so that a cross-cut score can be made using a scoring device.

It should be noted that the groined scratch includes two vertical lines with equal length and two horizontal lines with equal length, each vertical line is perpendicular to and intersects with both horizontal lines, and the distance between the two horizontal lines is the same as the distance between the two vertical lines.

In the coordinate system of fig. 1, the X axis is in a first direction, and the Y axis is in a second direction.

In a particular implementation, the blade 320 is a circular blade.

The first sliding member 210 and the supporting frame 100 may be connected in a sliding manner or a rolling manner, and the second sliding member 220 and the first sliding member 210 may be connected in a sliding manner or a rolling manner, which is not limited in this embodiment.

The scribing device provided by the embodiment is provided with the supporting frame 100, the sliding assembly 200 and the cutter assembly 300, wherein the sliding assembly 200 comprises a first slider 210 and a second slider 220, the cutter assembly 300 comprises a cutter bar 310 and a blade 320, the blade 320 is connected with the cutter bar 310, the cutter bar 310 is inserted on the second slider 220, the second slider 220 is connected with the first slider 210, and the first slider 210 is connected with the supporting frame 100. When the rotation axis direction of the blade 320 is aligned with the second direction and the first slider 210 is pulled to move relative to the supporting frame 100 along the first direction, the blade 320 may scribe a line along the first direction. Then, the knife bar 310 is moved in a vertical direction with respect to the second slider 220 and is rotated with respect to the second slider 220 such that the rotational axis direction of the knife 320 coincides with the second direction, and when the second slider 220 is pulled to move in the second direction with respect to the first slider 210, the knife 320 may scribe a line in the second direction, the first direction being perpendicular to the second direction. Compared with the prior art, the blade 320 can avoid manual operation errors under the guiding action of the first slide 210 and the second slide 220, and can mark mutually perpendicular marking lines, so that the marking errors are reduced.

Fig. 3 is a schematic structural view of a tool bar in the scribing apparatus provided by the embodiment of the present invention, and fig. 4 is a schematic structural view of a second sliding member in the scribing apparatus provided by the embodiment of the present invention.

Referring to fig. 3 and 4, the cutter bar 310 includes a connecting section 311 and an extending section 312, the extending section 312 is connected to a first end of the connecting section 311, the blade 320 is connected to a second end of the connecting section 311, the extending section 312 is inserted into the second slider 220, the extending section 312 has a first limiting portion 3121, a surface of the second slider 220 facing away from the blade 320 has a second limiting portion 221, the first limiting portion 3121 is matched with the second limiting portion 221, and the first limiting portion 3121 and the second limiting portion 221 are used for limiting a rotation angle of the cutter bar 310.

It can be understood that the first and second limiting portions 3121 and 221 can limit the rotation angle of the cutter bar 310 to 90 °, so as to ensure that the rotation axis of the blade 320 coincides with the first direction or the rotation axis of the blade 320 coincides with the second direction.

In a possible implementation manner, the first limiting portion 3121 is a rectangular block, the second limiting portion 221 is a limiting groove matched with the rectangular block, the rectangular block is inserted into the limiting groove, and the extending section 312 drives the rectangular block to move in the vertical direction, so that the rectangular block is separated from the limiting groove.

Specifically, the number of rectangular blocks is one. The rectangular block is a square block, and the projection of the extension section 312 to the square block is located in the middle area of the square block. The number of the limiting groove is one, and the extension section 312 passes through the limiting groove and then is inserted into the second sliding member 220.

When needing to make cutter arbor 310 rotate, pulling square piece rebound makes square piece break away from the spacing groove, then rotates cutter arbor 310, because the contained angle of four sides of square piece is 90, so when cutter arbor 310 rotated 90 multiples, the square piece could be successfully put into the spacing groove. Therefore, the rotation angle of the knife bar 310 can be restricted to 90 °.

In another possible implementation manner, the number of the rectangular blocks is one, the number of the limiting grooves is two, and the rectangular blocks are located on the outer wall of the extension section 312.

One side of the second sliding member 220 departing from the blade 320 is provided with a through hole for inserting the extension section 312, the side wall of the through hole is provided with two limiting grooves communicated with the through hole, the two limiting grooves are respectively located in the first direction of the through hole and the second direction of the through hole, and therefore the rotation angle of the cutter bar 310 is limited to be 90 degrees.

In order to facilitate the pulling of the tool bar 310 and the rotation of the tool bar 310, the tool bar 310 further comprises a holding section 313, and the holding section 313 is connected with one end of the extension section 312, which is far away from the connecting section 311.

In particular implementations, at least a portion of the hand-held section 313 is located outside of the support 100.

Fig. 5 is a schematic structural diagram of a cutter assembly in the scribing apparatus according to an embodiment of the present invention. Fig. 6 is a schematic view of the internal structure of fig. 1.

Referring to fig. 5 and 6, the cutter assembly 300 further includes a spring 330 and an adjusting member 340, the spring 330 and the adjusting member 340 are both sleeved on the extension section 312, the adjusting member 340 is located between the spring 330 and the blade 320, and the adjusting member 340 is connected to the extension section 312, so that the extension section 312 drives the adjusting member 340 to move.

One end of the spring 330 in the direction of the elastic force abuts against one surface of the second slider 220 facing the blade 320, and the other end of the spring 330 in the direction of the elastic force abuts against an end surface of the adjusting member 340.

The spring 330 can transmit elastic force to the blade 320 through the cutter bar 310, and the pressure of the blade 320 on the sample to be measured is constant during the scribing process of the blade 320, so that the formed scratches have consistent depth. The compression amount of the spring 330 can be adjusted by adjusting the position of the spring 330 on the extension section 312, so that the pressure of the blade 320 on the sample to be tested is adjusted, and the blade 320 can be ensured to cut the coating film to the substrate.

In one possible implementation, the outer wall of the extension 312 has an external thread, the adjusting element 340 has an internal thread matching the external thread, and the adjusting element 340 and the extension 312 are connected with the external thread through the internal thread. Thus, the adjustment of the compression amount of the spring 330 can be achieved by rotating the adjustment member 340, and the operation is simple.

In another possible implementation, the outer wall of the extension section 312 has elastic columns that can stretch and contract radially along the extension section 312, and a plurality of elastic columns are distributed at intervals along the axial direction of the extension section 312. The adjusting member 340 has a through hole on a sidewall thereof to match the elastic column. When the elastic column is extended, the elastic column passes through the through hole, thereby fixing the adjusting member 340 with the extension 312. Pressing on the spring post retracts the spring post and the adjustment member 340 can be moved along the extension 312 to adjust the amount of compression of the spring 330.

With reference to fig. 1 and fig. 2, the supporting frame 100 includes a bottom plate 110, a top frame 120 and two side plates 130, wherein the side plates 130 are respectively disposed on two opposite sides of the bottom plate 110, the top frame 120 is disposed above the bottom plate 110, the top frame 120 is connected to the side plates 130, and the first sliding member 210 is connected to each side plate 130.

It will be appreciated that the top frame 120 may provide room for the knife assembly 300 to facilitate the lifting and rotation of the knife bar 310. Two side plates 130 are disposed on the circumferential side of the base plate 110, and the remaining two sides are disposed in a hollow state, so that the scribing effect of the cutter assembly 300 can be observed in real time through the hollow side.

The bottom plate 110 is provided with an operation window 111, and the operation window 111 is opposite to the blade 320.

Specifically, the operation window 111 is rectangular, and the projection of the cutter assembly 300 to the operation window 111 is located in the middle area of the operation window 111.

In use, the base plate 110 is pressed on a sample to be measured, and the blade 320 traces a line on the sample to be measured through the operation window 111.

In some embodiments, the side plate 130 is provided with a mounting groove, the first sliding member 210 is inserted into the mounting groove, and the first sliding member 210 is partially located outside the side plate 130.

The mounting groove is matched with the first sliding part 210, and the first sliding part 210 located on the outer side of the side plate 130 is pulled to move along the first direction, so that the operation is convenient.

In the present embodiment, the middle region of the first sliding member 210 has a sliding slot 211, the second sliding member 220 is slidably connected to the sliding slot 211, and the extending direction of the sliding slot 211 coincides with the second direction. Therefore, the structure is simple and the processing is convenient.

Specifically, referring to fig. 4 and 6, the sliding groove 211 is a T-shaped groove. The second slider 220 has a concave groove 222 on opposite sides, and the concave groove 222 matches with the side of the top of the T-shaped groove. The groove 222 slides along the side of the top of the T-shaped groove.

With continued reference to fig. 1 and 2, the scribing apparatus further includes at least one first fastener 400 and at least one second fastener 500, the first fastener 400 being used to secure the first slide 210 to the support frame 100, and the second fastener 500 being used to secure the second slide 220 to the first slide 210.

It should be noted that the first fastening member 400 and the second fastening member 500 may be screws or pins, and the specific structures of the first fastening member 400 and the second fastening member 500 are not limited in this embodiment, and only the first fastening member 400 and the second fastening member 500 are required to be used for connection, so that the connection is reliable and the assembly and disassembly are convenient.

In use, the second slide 220 is fixed to the first slide 210 by the second fastener 500, and then the first slide 210 is pulled, so that the cutter assembly 300 traces a line on a sample to be measured. The second fastener 500 is then removed, the first slide 210 is secured to the support frame 100 using the first fastener 400, and the second slide 220 is pulled, thereby scribing the tool assembly 300 on the sample. Therefore, the stability of the cutter assembly 300 moving along the first direction and the second direction can be improved, the quality of scratches is improved, and the accuracy of detection results is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A marking device is characterized by comprising a supporting frame, a sliding component and a cutter component,

the sliding assembly comprises a first sliding part and a second sliding part, the first sliding part is connected with the supporting frame and can move along a first direction relative to the supporting frame, the second sliding part is connected with the first sliding part and can move along a second direction relative to the first sliding part, and the first direction is perpendicular to the second direction;

the cutter assembly comprises a cutter bar and at least one blade, the blade is connected with the cutter bar, the cutter bar is inserted on the second sliding piece and can move along the vertical direction relative to the second sliding piece, and the cutter bar can rotate relative to the second sliding piece so that the rotation axis of the blade is consistent with the first direction or the rotation axis of the blade is consistent with the second direction.

2. The line marking device as claimed in claim 1, wherein the cutter bar comprises a connecting section and an extending section, the extending section is connected with a first end of the connecting section, the blade is connected with a second end of the connecting section, the extending section is inserted on the second sliding member, the extending section is provided with a first limiting portion, a surface of the second sliding member, which faces away from the blade, is provided with a second limiting portion, the first limiting portion is matched with the second limiting portion, and the first limiting portion and the second limiting portion are used for limiting a rotation angle of the cutter bar.

3. The scribing device according to claim 2, wherein the first limiting portion is a rectangular block, the second limiting portion is a limiting groove matched with the rectangular block, the rectangular block is inserted into the limiting groove, and the extending section drives the rectangular block to move in the vertical direction so that the rectangular block is separated from the limiting groove.

4. The scoring device recited in claim 2 wherein the knife bar further includes a hand-held segment connected to an end of the extension segment that faces away from the connecting segment.

5. The scoring device recited in claim 2 wherein the cutter assembly further includes a spring and an adjustment member, the spring and the adjustment member both being disposed over the extension and the adjustment member being disposed between the spring and the blade, the adjustment member being connected to the extension such that the extension moves the adjustment member;

one end of the spring in the elastic direction is abutted against one surface, facing the blade, of the second sliding piece, and the other end of the spring in the elastic direction is abutted against the end face of the adjusting piece.

6. The scoring device recited in claim 5 wherein the outer wall of the extension has an external thread, and the adjustment member has an internal thread that mates with the external thread, the adjustment member and the extension being connected to the external thread via the internal thread.

7. The scribing apparatus according to any one of claims 1 to 6, wherein the support frame comprises a bottom plate, a top frame and two side plates, the side plates are respectively disposed on two opposite sides of the bottom plate, the top frame is located above the bottom plate and is connected to the side plates, and the first sliding member is connected to each of the side plates;

and an operation window is arranged on the bottom plate and is opposite to the blade.

8. The line striping apparatus of claim 7 wherein the side plate defines a mounting slot, the first slider member is inserted into the mounting slot and the first slider member is partially positioned outside the side plate.

9. The line striping apparatus of any one of claims 1 to 6 wherein the first slider has a runner in a middle region thereof, the second slider being slidably connected to the runner, the runner extending in a direction which is coincident with the second direction.

10. The scoring device recited in any one of claims 1 to 6 further comprising at least one first fastener for securing the first slide to the support frame and at least one second fastener for securing the second slide to the first slide.

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