KR20200144313A - Loader centering apparatus for unmanned vehicle - Google Patents

Abstract

The present invention relates to a loader centering apparatus for an unmanned transportation vehicle. The apparatus includes: a centering guide unit guiding left and right movements of a loader, which is placed in an upper part of a support body of an unmanned transportation vehicle such that a carrying material is placed therein, by being interposed between the loader and the support body in a state in which the loader is installed; a return guide unit guiding the unmanned transportation vehicle to its original position if the unmanned transportation vehicle gets out of both guides of a loading and unloading part by moving backward in a state in which the loader is corrected in position by being guided by the centering guide unit while being pushed by both guides of the loading and unloading part when the unmanned transportation vehicle makes an entry. Therefore, the loader centering apparatus is capable of enabling the carrying material to be loaded into or unloaded from an accurate position by minimizing a stop error range of the unmanned transportation vehicle by automatically centering the loader where the carrying material is loaded during the loading and unloading of the carrying material.

Description

Loader centering device for unmanned vehicles {LOADER CENTERING APPARATUS FOR UNMANNED VEHICLE}

The present invention centers the position of the loader when entering unmanned vehicles such as AGV and LGV used in the smart factory process, and allows the loader to return to its original position when retreating, so that the stop error of the unmanned vehicle is 10 mm or more. Even if it occurs, it is a technology related to the loader centering device of an unmanned transport vehicle that corrects the position of the transported object loaded in the loader and allows it to be carried in and out to the correct position.

In the smart factory process, unmanned transport vehicles such as AGV and LGV are applied to carry in and carry out the transported goods.At this time, there is a problem that the transported goods cannot be moved to the correct position because the stopping error of the unmanned transport vehicle is largely 10 mm or more.

As a technology to solve this,

Republic of Korea Patent Registration No. 10-0292849 (registered on March 27, 2001, hereinafter referred to as'document 1') 『automatic position correction type transfer device for unmanned transportation vehicles』 is presented.

Document 1 describes a conveyed material conveying unit that automatically conveys a conveyed article on a conveyed article loading table when it is located at a predetermined setting position, a sensor device that detects whether the conveyed article conveying unit is located at the predetermined setting position, and the conveyed article conveying unit is It is connected to a transport unit driving device that moves the transport material transport unit in a moving direction or a reverse direction of the unmanned transport vehicle so that it can be located at a set position, and to the transport object transport unit, a sensor device, and a transport unit driving unit, according to a signal input from the sensor. By providing an electric signal to the conveying unit driving means and the conveying material conveying unit to operate the conveying unit driving device and the conveying material conveying unit, since the conveyed material can be transferred to a set precise position, workability for parts requiring precision is improved. It is a technology related to an automatic position correction type transfer device of an unmanned transport vehicle that can improve the flexibility of the system because there is no need to install a separate device.

As another technology, Korean Patent Registration No. 10-0825363 (registered on April 21, 2008, hereinafter referred to as'document 2') 『Unmanned Carriage』 is suggested.

Document 2 is an unmanned transfer vehicle including a transfer device for transferring wafers, a buffer cassette for temporarily storing wafers, and a pressing member provided in an opening of the buffer cassette, wherein the pressing member is used when the unmanned transfer vehicle is driven. In the configuration in which the end edge of the wafer is subjected to contact pressure by sliding it from the side unit value of the buffer cassette opening to the center position, the pressure member is easily damaged by rubbing against the outer periphery of the wafer, and its durability becomes a problem. The pressing member is configured to be movable between a "pressing" position in contact with the edge of the wafer to pressurize and a "retract" position separated from the edge of the wafer, and the pressing member is "pressurized" from the "retract" position. The present invention relates to an unmanned transport vehicle configured such that the moving direction of the pressing member at the moment of contacting the edge of the wafer when shifting to the position is substantially perpendicular to the contour of the portion of the wafer that is in contact with the pressing member.

Document 1. Korean Patent Registration No. 10-0292849 (registered on March 27, 2001) Document 2. Korean Patent Registration No. 10-0825363 (Registered on April 21, 2008)

The present invention centers the position of the loader loaded with the transported goods carried in and out of the unmanned transport vehicle so that transported goods can be carried in and out to the correct position, and the loader is returned to the original position when the unmanned transport vehicle is operated. Its purpose is to provide a suitable loader centering device for unmanned vehicles.

In order to solve the above problems, the loader centering device for an unmanned vehicle according to the present invention,

A centering guide unit disposed above the support body of the unmanned transport vehicle and interposed between the support body and the loader in a state where a loader on which the conveyed object is seated is provided to guide the left and right movement of the loader; And

When the loader enters the unmanned transport vehicle, it is pushed by both guides of the carry-in part and at the same time, it is guided by the centering guide unit and the position is corrected.When the unmanned transport vehicle retreats and deviates from both guides of the carry-in part, it is guided to its original position. A return guide unit;

It characterized in that it is made of.

The loader centering device for an unmanned vehicle according to the present invention,

By automatically centering the loader loaded with the transported object when carrying in/out the transported object in consideration of the stop error of 10mm or more that occurs due to the characteristics of the unmanned transport vehicle AGV, LGV, etc., the range of the stop error of the unmanned transport vehicle can reach less than 1mm. The greatest effect is that the transported goods can be carried in and out of the correct location.

1 is a side view showing a support and a loader of an unmanned vehicle,
2 is a three-dimensional configuration diagram showing a loader centering device of an unmanned vehicle according to the present invention,
3 is a front configuration diagram of FIG. 2;
Figure 4 is a plan configuration diagram of Figure 2,
5 to 10 are views showing a process in which a loader is centered by a loader centering device of an unmanned transport vehicle according to the present invention;
11 is a plan configuration diagram showing another example of the return guide unit;
12 is a three-dimensional configuration diagram showing the displacement means,
13 is a plan view showing a process of adjusting the position of the centering face by the displacement means.

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

Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical ideas of the present invention, and various equivalents that can replace them at the time of the present application It should be understood that there may be water and variations.

Based on FIG. 4, the front rail side is designated as front or front, and the rear rail side is designated as rear or rear, and a side block located on the left of a pair of side blocks based on FIG. 4 The direction is specified as the left part or the left side, and the side block side located on the right side is the right part or the right side.

In addition, the unmanned transport vehicle referred to in the present invention refers to an automated autonomous guided vehicle (AGV) and a laser guided vehicle (LGV) for transporting a transport while driving unmanned in an industrial site.

As shown in Figures 1 to 13, the loader centering device of the unmanned vehicle according to the present invention,

It is largely composed of a centering guide unit 100 and a return guide unit 200.

Looking at each configuration,

The centering guide unit 100 is

1 to 4,

The loader 12 is disposed on the support 11 of the unmanned transport vehicle 10 and is provided with the loader 12 on which the conveyed material 1 is seated, and is interposed between the support 11 and the loader 12 to To guide the left and right movement of the loader 12,

Front rail 101 installed on the upper front side of the support 11 and having a left and right length,

A rear rail 102 installed on the upper and rear side of the support 11 and arranged side by side with the front rail 101 and having a left and right length,

Two or more front sliders 103 installed on the lower front side of the loader 12 and slid left and right along the front rail 101,

Two or more rear sliders 104 installed at the lower rear side of the loader 12 and slid left and right along the rear rail 102, and

A pair of centering faces 105 that are erected at both ends of the loader 12 and come into contact with both guides 21 of the carry-in/out parts 20 when entering the unmanned transport vehicle 10

It is made including.

Here, as shown in FIG. 4, although the rails 101 and 102 are disposed at the front and rear sides respectively, this is an example, and the weight or size of the loader 12 and the conveyed material 1 loaded thereto is considered. Therefore, the quantity can be changed accordingly.

In addition, each of the rails 101 and 102 and each of the sliders 103 and 104 are formed of an LM Guide structure that allows each slider to perform linear motion along each rail in a mutually coupled state.

And as shown in Figure 5, there are two or more spherical ball casters 22 disposed back and forth on both guides 21 of the carry-in/out part 20, and the ball casters 22 include both guides ( 21) It is a form in which part of the inside is concealed and the other part is exposed to the outside. In the concealed state, the cloud movement is performed by external contact.

In addition, the carry-in/out part 20 refers to a process part that requires a process for the unmanned transport vehicle 10 to enter and carry in or carry out the transported product.For example, a loading and storage part, an inspection part, a supply part, etc. I can.

And, as shown in Figure 4, each centering face 105 is a wall structure erected vertically at both ends of the loader 12, in particular, inclined in a direction facing each other at the front end of each centering face 105 A front guide 105a is formed, and a rear guide 105b inclined in a direction facing each other is formed at a rear end of each centering face 105. This allows the unmanned vehicle 10 to enter more easily by the front guide 105a when entering between the guides 21 of the carry-in/out part 20, and the unmanned vehicle 10 When retreating between the two guides 21 of the carry-in/out part 20, the rear guide 105b makes it easier to retreat, or the loader 12 is rotated 180 degrees and the rear This is to allow the guide 105b to perform the role of the front guide 105a.

Return guide unit 200

As shown in Figures 2 to 13,

When the loader 12 enters the unmanned transport vehicle 10, it is pushed by both guides 21 of the carry-in/out part 20 and at the same time, it is guided by the centering guide unit 100 to correct the position. When the car 10 retreats and deviates from both guides 21 of the carry-in/out part 20,

A pair of side blocks 201 installed to be left and right spaced apart in the upper central region of the support 11,

A center block 202 installed in the lower central area of the loader 12 and interposed between each side block 201, and

Two or more return springs 203 disposed between the left side block 201 and the center block 202, and the center block 202 and the right side block 201 among the side blocks 201

It is made including.

Here, as shown in FIG. 4, the return spring 203 is provided with a pair to be disposed between the left side block 201 and the center block 202, and the center block 202 and the right side block 201, This is an example, and in consideration of the weight or size of the loader 12 and the conveyed material 1 loaded thereto, a larger number of return springs 203 will be provided along the length direction of each block 201 and 202 accordingly. It can be.

And after forming a groove in the area where both ends of the return spring 203 are in contact with each of the side blocks 201 and the center block 202, both ends of the return spring 203 are inserted into the grooves. When the return spring 203 is compressed or decompressed, the return spring 203 may be implemented to prevent separation between the side blocks 201 and the center block 202.

As another example, as shown in FIG. 11, the return guide unit 200 has a distribution hole 204 formed to pass through each side block 201 left and right, and is connected to both outer walls of the center block 202 and ends. It further includes two or more return rods 205 that are exposed to the outside through the distribution hole 204 and into which the return spring 203 is fitted.

As a result, the loader 12 is stably in its original position as compression and restoration are performed in a state stably supported by the return rod 205 when the return spring 203 is compressed or restored due to decompression. Helps.

On the other hand, the loader centering device of the unmanned vehicle according to the present invention further includes a displacement (變位) means 300,

The displacement means 300 is

12 and 13,

Support blocks 301 installed to be disposed back and forth on both upper sides of the loader 12 and having left and right lengths,

A vertical displacement block 302 coupled to the support block 301 and sliding along the longitudinal direction of the support block 301,

An elevating groove 303 having a T-shaped cross-sectional space opened outward to the displacement block 302,

The lifting protrusion 304 having a T-shaped cross-sectional shape installed on the inner wall of the centering face 105 and fitted in the lifting groove 303 to slide up and down,

A first tightening bolt 305 that is fastened to the displacement block 302 so that an end presses the support block 301 when tightened, and

A second tightening bolt 306 that is fastened to the displacement block 302 so that the end presses the lifting protrusion 304 when tightened.

It is made including.

At this time, the first tightening bolt 305 may be replaced with a pin. For example, a pin hole is formed in the displacement block 302 and a plurality of corresponding pin holes are formed in the support block 301 along the length direction thereof. In the formed state, by driving and fixing a pin in each hole after positioning the displacement block 302, it is possible to adjust and fix the left and right positions of the displacement block 302, that is, the centering face 105 (Fig. See [A] and [B] of 13)

In addition, the second tightening bolt 306, like the first tightening bolt 305, can also be replaced with a pin, for example, a plurality of pin holes are formed in the displacement block 302 along the vertical direction thereof. In a state in which a corresponding pin hole is formed in the lifting protrusion 304, after adjusting the vertical position of the centering face 105, by driving and fixing a pin in each hole, it is possible to adjust and fix the vertical position of the centering face 105 It is possible.

Therefore, it is possible to adjust the left and right and upper and lower positions of each of the centering faces 105 through the displacement means 300 according to the width or vertical position between the guides 21 of the carry-in/out part 20.

And as shown in Figure 12, the displacement means 300 is connected to the displacement block 302 and further comprises a sub-block 307 having a roller (307a) for seating the upper surface of the support block 301 at the end. , This is the centering face while improving the durability of the coupling portion between the support block 301 and the displacement block 302 in a fixed state after the displacement block 302 moves left and right along the support block 301 This is to prevent as much as possible from being deformed when 105 contacts both guides 21 of the carry-in/out part 20.

Looking at the operating state of the loader centering device of the unmanned vehicle according to the present invention consisting of the above configuration,

5, when the unmanned vehicle 10 enters so that the center line of the loader 12 of the unmanned vehicle 10 deviates to the left based on the center line between both guides 21 of the carry-in/out part 20,

As shown in FIG. 6, as the unmanned vehicle 10 enters as it is, the centering face 105 located on the left side of the left guide 21 among the guides 21 of the carry-in part 20 first contacts the The loader 12 is moved to the right by the centering guide unit 100,

At this time, as shown in FIG. 7, the center block 202 of the return guide unit 200 moves to the right with the loader 12 and is disposed between the center block 202 and the side block 201 located on the right. The returned spring 203 is compressed, and the center line between the guides 21 of the carry-in/out part 20 and the center line of the loader 12 of the unmanned vehicle 10 coincide with each other. Eventually, centering for the loader 12 is established. In the state set in this way, the loader 12 is loaded with a conveyed material or a process of inspecting or carrying out the loaded conveyed material is performed.

After this process is completed, when the unmanned transport vehicle 10 exits along both guides 21 of the carry-in/out part 20, the compressed return spring 203 is restored and the center block 202 is returned to its original position. By returning, the loader 12 on which the center block 202 is installed is also returned to its original position.

On the other hand, as shown in FIG. 8, when the center line of the loader 12 of the unmanned transport vehicle 10 is skewed to the right with respect to the center line between the guides 21 of the carry-in/out part 20,

As shown in FIG. 9, as the unmanned vehicle 10 enters as it is, the centering face 105 located on the right side of the right guide 21 among both guides 21 of the carry-in part 20 first comes into contact with the The loader 12 is moved to the left by the centering guide unit 100,

At this time, as shown in FIG. 10, the center block 202 of the return guide unit 200 moves to the left together with the loader 12, and is disposed between the center block 202 and the side block 201 located on the left. The returned spring 203 is compressed, and the center line between the guides 21 of the carry-in/out part 20 and the center line of the loader 12 of the unmanned vehicle 10 coincide with each other. Eventually, centering for the loader 12 is established. In the state set in this way, the loader 12 is loaded with a conveyed material or a process of inspecting or carrying out the loaded conveyed material is performed.

After this process is completed, as described above, when the unmanned transport vehicle 10 exits along both guides 21 of the carry-in/out part 20, the compressed return spring 203 is restored and the center block 202 ) To its original position, the loader 12 in which the center block 202 is installed is also returned to its original position.

In the above description of the present invention, the "loader centering device of an unmanned transport vehicle" having a specific shape and structure has been mainly described with reference to the accompanying drawings, but the present invention can be variously modified and changed by those skilled in the art. Changes should be construed as belonging to the scope of the present invention.

10: Unmanned vehicle
11: support
12: loader
20: carry-in/out part
21: guide
22: ball caster
100: centering guide unit
101: front rail
102: rear rail
103: front slider
104: rear slider
105: centering face
105a: Front guide
105b: rear guide
200: return guide unit
201: side block
202: center block
203: return spring
204: distribution hall
205: return rod
300: displacement means
301: support block
302: displacement block
303: elevating groove
304: lifting protrusion
305: Article 1 tightening bolt
306: Article 2 tightening bolt
307: subblock
307a: roller

Claims (7)

The loader 12 is disposed on the support 11 of the unmanned transport vehicle 10 and is provided with the loader 12 on which the conveyed material 1 is seated, and is interposed between the support 11 and the loader 12 to Centering guide unit 100 for guiding the left and right movement of the loader 12; And
When the loader 12 enters the unmanned transport vehicle 10, it is pushed by both guides 21 of the carry-in/out part 20 and at the same time, it is guided by the centering guide unit 100 to correct the position. A return guide unit 200 for guiding the vehicle 10 to be retracted and deviated from both guides 21 of the carry-in/out part 20 so as to be in an original position;
The loader centering device of the unmanned vehicle, characterized in that consisting of.
The method of claim 1,
The centering guide unit 100 is
A front rail 101 installed on the upper front side of the support 11 and having a left and right length,
A rear rail 102 installed on the upper rear side of the support 11 and arranged in parallel with the front rail 101 and having a left and right length,
Two or more front sliders 103 installed on the lower front side of the loader 12 and slid left and right along the front rail 101,
Two or more rear sliders 104 installed at the lower rear side of the loader 12 and slid left and right along the rear rail 102,
A pair of centering faces 105 that are erected at both ends of the loader 12 and come into contact with both guides 21 of the carry-in/out parts 20 when entering the unmanned transport vehicle 10
A loader centering device for an unmanned vehicle, characterized in that consisting of.
The method of claim 2,
Two or more spherical ball casters 22 disposed back and forth are provided on both guides 21 of the carry-in/out part 20,
A front guide 105a inclined in a direction facing each other is formed at the front end of each centering face 105,
A loader centering device for an unmanned vehicle, characterized in that a rear guide (105b) inclined in a direction facing each other is formed at a rear end of each of the centering faces (105).
The method of claim 3,
The return guide unit 200 is
A pair of side blocks 201 installed to be left and right spaced apart in the upper central region of the support 11,
A center block 202 installed in the lower central area of the loader 12 and interposed between the side blocks 201,
Two or more return springs 203 disposed between the left side block 201 and the center block 202, and the center block 202 and the right side block 201 among the side blocks 201
The loader centering device of the unmanned vehicle, characterized in that consisting of.
The method of claim 4,
The return guide unit 200 is
A distribution hole 204 formed to penetrate left and right through each side block 201,
Two or more return rods 205 which are connected to both outer walls of the center block 202, the ends of which are exposed to the outside through the distribution hole 204 and into which the return spring 203 is fitted
A loader centering device of an unmanned vehicle, characterized in that it further comprises.
The method according to any one of claims 2 to 5,
Support blocks 301 installed to be disposed back and forth on both upper sides of the loader 12 and having a left and right length,
A vertical displacement block 302 that is coupled to the support block 301 and slides along the longitudinal direction of the support block 301,
An elevating groove 303 having a T-shaped cross-sectional space opened to the outside of the displacement block 302,
An elevating protrusion 304 having a T-shaped cross-sectional shape installed on the inner wall of the centering face 105 and fitted in the elevating groove 303 to slide up and down,
A first tightening bolt 305 that is fastened to the displacement block 302 and pressurizes the support block 301 at an end thereof when tightened,
A second tightening bolt 306 that is fastened to the displacement block 302 so that the end presses the lifting protrusion 304 when tightened.
A loader centering device for an unmanned vehicle, characterized in that it further comprises a displacement means (300) for a centering face made of.
The method of claim 6,
The displacement means 300 further comprises a sub-block 307 connected to the displacement block 302 and having a roller 307a for mounting the upper surface of the support block 301 at an end thereof. Loader centering device.

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