KR20160020683A - Manufacturing method for grating - Google Patents

Abstract

The present invention relates to a manufacturing method for grating. According to the present invention, the manufacturing method for grating includes: (a) a step of preparing a panel for manufacturing grating; (b) a step of locating the panel around a mold; (c) a step of a piercing process to transfer the panel in one direction and form burring holes on a support plate at a preset position in a preset number; (d) a step of a burring process to form holes in a preset number by expanding the burring hole in order from the initially formed burring hole while consistently transferring the panel after performing the piercing process step; (e) a step of forming an antiskid protrusion protruding from the upper surface of the support plate around the hole at a preset position in a preset number after performing the burring process step; (f) a step of removing a side plate bending processing piece located at a corner part of the support plate; (g) a step of removing a connection piece located between the side plate bending processing piece of the support plate; (h) a step of a bending process to bend a pair of first side plates located in the width direction of the support plate and a pair of second side plates located in the longitudinal direction of the support plate downwards; and (i) a step of installing multiple reinforcing ribs supporting the support plate in the lower part of the support plate. Therefore, required grating can be easily and conveniently manufactured since the manufacturing method for grating allows production automation of continuously performing a series of forming processes by a mold device.

Description

TECHNICAL FIELD [0001] The present invention relates to a grating manufacturing method,

The present invention relates to a grating manufacturing method, and more particularly, to a method of manufacturing a grating, in which a panel for manufacturing a grating is placed on a metal mold and transferred in one direction, The present invention provides a method of manufacturing a grating which can easily and conveniently manufacture a required grating by implementing automation of production in which a series of molding processes are successively performed through a single mold apparatus .

Generally, the grating is provided on a side of a drain pipe of a drain pipe installed on a road, a parking lot, a building, a factory, etc. so that a pedestrian and a vehicle do not fall into the drain pipe, and a drain pipe cover .

Thus, the grating used as the drain cover is made of a material and structure of excellent strength so that it can withstand a high load such as a vehicle.

According to the grating manufacturing method of the related art, gratings are formed by a piercing process for forming a burring hole, a burring process for forming a burr hole, a non-slip process, a side plate bending process, The manufacturing process can not be performed continuously and each step for manufacturing the grating is performed by a worker taking a separate place and time to manufacture the grating.

Therefore, the conventional grating manufacturing method requires the operator to perform the piercing process step, the burring process step, the non-slip process forming process, the side plate bending process process, and the removing process of the connecting piece separately in separate places and time, The manufacturing work can not be performed smoothly, and the manufacturing cost due to the labor cost is greatly increased.

Korean Patent Publication No. 10-2013-0000680 (March 31, 2013) Korean Patent No. 10-0832393 (May 20, 2008)

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a grating manufacturing method, and more particularly, to a method for manufacturing a grating, , The piercing process step, the burring process step, the non-slip protrusion forming step, and the like can be performed successively in the process of transferring the panel, thereby realizing the automation of production in which a series of molding processes are successively performed through a single mold apparatus And a method of manufacturing a grating that can easily and conveniently manufacture the grating.

According to another aspect of the present invention, there is provided a method of manufacturing a grating including: (a) preparing a panel for manufacturing a grating; (b) positioning the panel on a mold side; (c) a piercing process step of transferring the panel in one direction, wherein a burring hole is formed at a predetermined position and number in a support plate; (d) a burring process step of sequentially forming the burring holes from the initially formed burring hole while continuously conveying the panel after the piercing process step, and forming the number holes according to the predetermined number; (e) molding the non-slip protrusions protruding from the upper surface of the support plate around the number of holes in accordance with a predetermined position and number after performing the burring process step; (f) removing the side plate bending piece located at a corner of the support plate; (g) removing a connecting piece located between the side plate bending pieces of the support plate; (h) a pair of first side plates positioned in the width direction of the support plate, and a pair of second side plates positioned in the longitudinal direction of the support plate; And (i) providing a plurality of reinforcing ribs supporting the support plate on the lower side of the support plate; .

In addition, by performing the process steps (c) to (e) while transferring the panel for manufacturing the grating, a predetermined position and number-burring holes are arranged in two rows in the width direction, When the pairs are formed, the number holes are formed corresponding to the number of burring holes, and the non-slip protrusions are formed in such a manner that the twenty-nine pieces are arranged side by side in the longitudinal direction and are positioned on all four sides of the number holes. And the non-slip projection are formed.

In the step (h), the first tooth claw portions provided at both ends of the first side plate are engaged with first coupling grooves provided at both ends of the second side plate, and the second coupling groove provided at both ends of the first side plate And the second engagement projections provided at both ends of the two side plates are engaged with each other.

In addition, an insertion protrusion is protruded from both ends of the reinforcing rib, and the insertion protrusion is inserted into the insertion hole of the first side plate and is coupled.

Meanwhile, in the step (h), the bending process for the first side plate and the second side plate is performed after positioning the reinforcing rib between the first side plate and the second side plate before bending the first side plate and the second side plate .

After the step (h) is performed, a caulking process step of extending the cross-sectional area by vertically inserting the tip of the insertion protrusion of the reinforcing rib inserted into the insertion hole of the first side plate using a caulking tool in a direction perpendicular to the distal end surface Is performed.

Both side surfaces of the reinforcing rib are interfered with and fixed to flanges disposed on both sides in the width direction of the reinforcing rib.

As described above, according to the method of manufacturing a grating according to the present invention, a method for manufacturing a grating is provided. More specifically, a method for manufacturing a grating is provided. , The piercing process step, the burring process step, the non-slip protrusion forming step, and the like can be performed successively in the process of transferring the panel, thereby realizing the automation of production in which a series of molding processes are successively performed through a single mold apparatus Can be easily and conveniently manufactured.

According to the method of manufacturing a grating according to the present invention, since a plurality of holes are formed in the support plate and the flange is bent downwardly around the holes, the overall weight of the grating is reduced while durability is improved Can be implemented.

According to the method of manufacturing a grating according to the present invention, it is possible to eliminate the welding process in the process of manufacturing the grating, thereby improving the productivity and reducing the manufacturing cost.

In addition, according to the method of manufacturing a grating according to the present invention, since the grating is integrally formed from one panel, the appearance can be made beautiful and the aesthetic property can be improved.

In addition, according to the grating manufacturing method of the present invention, the projection of the reinforcing rib is caulked so that even when a heavy load is applied to the grating due to a vehicle or the like, the reinforcing rib is not separated from the side plate.

According to the method of manufacturing a grating according to the present invention, since the protruding piece is formed on the side plate, noise can be prevented because the grating does not flow in the drain pipe even when the pedestrian or the vehicle passes.

In addition, according to the method of manufacturing a grating according to the present invention, since the slip prevention protrusion is formed on the upper surface of the support plate of the grating, it is possible to prevent the pedestrian from slipping even if moisture is accumulated on the upper surface of the grating, have.

In addition, according to the method of manufacturing a grating according to the present invention, the grating can be maintained in a folded state, thereby improving the stability of the operator during replacement or repair of a water pipe.

1 is a flowchart illustrating a manufacturing process according to a method of manufacturing a grating according to the present invention.
2 is a configuration diagram showing a mold apparatus according to the present invention.
3 is an image showing a mold apparatus according to the present invention.
4 is a configuration diagram showing a state in which a burring hole is formed on a support plate of a panel according to the present invention.
FIGS. 5 and 6 are views showing a state in which a number of holes are formed sequentially from the first formed burring hole according to the present invention. FIG.
7 is a configuration diagram showing a state in which a non-slip projection is formed on a support plate according to the present invention.
Fig. 8 is a configuration diagram showing the next step of Fig. 7. Fig.
Fig. 9 is a configuration diagram showing the next step of Fig. 8. Fig.
Fig. 10 is a configuration diagram showing the next step of Fig. 9; Fig.
11 is a view showing a panel for manufacturing a grating formed through a piercing process step, a burring process step, a non-slip projection forming process, a side plate bending process removing process, and a connecting piece removing process according to the present invention.
12 is a perspective view showing a grating according to the present invention.
13 is a bottom perspective view showing a grating according to the present invention.
FIG. 14 is an exploded perspective view showing the installation relationship of the grating and the drain pipe according to the present invention. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The term is synonymous with the general meaning of the term as understood by one of ordinary skill in the art to which the present invention belongs and, if the term used herein conflicts with the general meaning of the term in question, In accordance with the definition, the same reference numerals throughout the specification denote like elements.

It should be noted that the method of manufacturing a grating shown in this specification can be implemented in various embodiments and is not limited to the embodiments described herein.

According to the method of manufacturing a grating according to the present invention, the step (S110) of preparing a panel for manufacturing the grating, (b) the step of placing the panel on the mold side (S120), (c) (D) a deburring process step (S140) for sequentially expanding the burring hole from the initially formed burring hole to form the burr hole; and (e) (S150) of forming a slip prevention protrusion protruding from the upper surface of the support plate, (f) removing a side plate bending piece located at a corner of the support plate (S160), (g) (H) a bending process step (S180) of bending the first and second side plates of the support plate downward; (i) a step of removing the connecting ribs of the reinforcing ribs (Step S190).

In the step (S110) of preparing the panel for manufacturing the grating (a), the panel 110 having a predetermined size and thickness for preparing the grating 100 used as a drain hole cover is prepared.

It is preferable that the panel 110 is formed of a metal plate or the like having various shapes such as a rectangle or a square.

In the step (S120) of placing the panel on the mold side (b), (b) the mold apparatus 200 manufactured to be capable of performing the piercing process, the burring process and the non- Thereby positioning the prepared panel 110.

In the piercing process step S130 of forming a burring hole according to a predetermined position and number on the support plate of the panel, the grating 100 is pierced through the piercing process performing unit 210 installed on the mold apparatus 200 side. The burr hole 112 is formed on the support plate 111 at a predetermined position and number.

In the present invention, the grating 100 has a pair of burring holes 112 arranged in two rows in the width direction, and a total of seven pairs of burring holes 112 are formed. As a reference.

In this grating 100, four burring holes 112 are arranged in two rows in the width direction, and a pair of them are provided, and a total of seven pairs are provided. Therefore, the number of burring holes 14 arranged in the longitudinal direction * The number of ring holes (4) = the total number of burring holes (56).

The operation of molding the burring hole 112 is a preliminary operation for forming the repair hole 113, which means the operation of forming a hole formed in the panel 110 for manufacturing the grating 100.

After the piercing process step (S130) is performed as described above, (d) a burring process step (S140) for sequentially forming the burring holes from the initially formed burring holes to form the burr holes can be performed.

(d) In the burring process step S140 for sequentially expanding the burring holes from the initially formed burring holes to form the burr holes, the burring holes 112 formed in the piercing process step are expanded through the burring process performing unit 220, The ball 113 is formed.

At this time, the number holes 113 are formed corresponding to the burring holes 112 formed in the piercing process step S130, and are formed to have the same number as the burring holes 112.

The number holes 113 are formed to penetrate through the support plate 111 and may have an elliptical shape in order to reduce the stress concentration that may be generated when the flange 114 is machined. The shape of the number hole 113 may be formed in various shapes such as a circle, a rectangle, and a polygon in addition to an ellipse. The number holes 113 may be arranged in a matrix in which rows and columns are aligned with each other, and may be arranged in such a manner that any one of the rows and the columns may be aligned with each other and the other may be arranged to intersect with each other. .

The flange 114 may further be formed around the repair hole 113 in the process of expanding the burring hole 112 and forming the repair hole 113.

The flange 114 is formed by bending and extending from the periphery of the repair hole 113 to the drain pipe 300 side. The flange 114 prevents the repair hole 113 from being sagged or deformed by a vertical load acting on the repair hole 113 and guides the flow of the rainwater flowing through the repair hole 113, So that it can smoothly flow into the drain pipe 300.

The burring operation is performed by inserting a burring punch or a press punch having a sectional area larger than the cross sectional area of the burring hole 112 formed in the panel 110 for manufacturing the grating 100, (112), or a flange is formed around the burring hole (112).

The burring process performing unit 220 used in the burring process in the step (d) includes an upper mold, a lower mold, and a burring punch.

The upper mold is provided with guide holes extending from the upper surface to the lower surface to guide the movement of the burring punches. The burring punches guide holes of the upper molds to form flanges on the burring holes 112 of the panel 110 And is moved toward the lower mold side through the burring hole 112. [0051] As shown in FIG.

After the deburring step S140 is performed, the slip prevention protrusions 115 protruding upward from the upper surface of the support plate 111 constituting the panel 110 for forming the grating 100, .

That is, in the step (S150) of forming the non-slip protrusion protruding from the upper surface of the support plate, the protrusion is formed on the upper surface of the support plate 111 through the piercing and burring operation by the non-slip protrusion forming part 230 Thereby forming a non-slidable projection 115 having a structure.

The slip prevention protrusions 115 are arranged in two rows in the width direction so as to form a pair. The slip prevention protrusions 115 are formed at predetermined positions in consideration of the number of holes 113 provided in the number corresponding to the total of seven pairs of burring holes 112 It is preferable that the number of the slip prevention protrusions 115 is formed in such a manner that the slip prevention protrusions 115 are arranged in parallel in the longitudinal direction so as to be located on all four sides of the repair hole 113. In this case, since the non-slip protrusions 115 are arranged on the four sides of the number-of-holes 113, a total of 145 pieces are formed.

The non-slip projections 115 allow the number of holes 113 to be arranged in the longitudinal direction in the remaining unformed portions.

The slidable protrusions 115 may be formed in such a manner that the central portion of the slidable protrusion 115 penetrates the upper surface of the support plate 111 and protrude upward. Even if water is accumulated on the support plate 111 due to the protruding feature, It is possible to prevent the slip of the pedestrian or the vehicle.

In addition, rainwater or snow around the non-slip protrusion 115 can be introduced into the drain pipe 300 through the through-hole of the slip prevention protrusion 115, thereby greatly improving the frictional force of the support plate 111.

After this non-slip protrusion 115 is formed, the side plate bending piece 116 positioned at the corner of the support plate 111 is removed.

That is, in the step (S160) of removing the side plate bending piece located at the corner portion of the support plate, the first and second side plates 111a and 111b of the support plate 111 are bent through the bending process part removing unit 240, The bending of the side plate 116 located at the edge of the support plate 111 is removed.

Next, in step (S170) of removing the connecting pieces located between the side plate bending pieces, (g) removing the connecting piece 111c located between the side plate bending pieces 116 removed, Thereby making it possible to perform a bending operation on the 1,2 side plates 111a and 111b.

Thereby, (h) a bending process step (S180) for bending the first and second side plates of the support plate downward can be performed.

The first side plate 111a and the second side plate 111b are bent along the bending line B / L in the process of bending the first and second side plates 111a and 111b of the support plate 111, And then bend downwardly with respect to the support plate 111.

In this process, the first coupling projections 111a-1 provided at both ends of the first side plate 111a are engaged with the first coupling grooves 111b-1 provided at both ends of the second side plate 111b, The second coupling grooves 111a-2 provided at both ends of the side plate 111a are structured to be engaged with the second coupling projections 111b-2 provided at both ends of the second side plate 111b.

The pin guide holes 111a-5 are formed at both ends of the first side plate 111a so as to penetrate through the pin holes 324a formed at both ends of the fixing plate 324 of the drain pipe 300, And is fixed by the hinge pin 350.

Thus, the grating 100 can be rotated with respect to the drain pipe 300 through the hinge pin 350.

The first side plate 111a and the second side plate 111b are seated on the seating plate 322 of the drain pipe 300 and support the support plate 111. [ The first side plate 111a and the second side plate 111b are formed to have the same height so that the difference in height between the drain pipe 300 and the grating 100 in the process of placing the grating 100 on the drain pipe 300 It is preferable to set the heights of the first and second side plates 111a and 111b so as not to occur.

(I) In the step (S190) of installing the reinforcing ribs for supporting the supporting plate on the lower side of the supporting plate, both ends of the reinforcing ribs 117 are bent during the bending process of the first side plate 111a and the second side plate 111b It is preferable to bend the first side plate 111a after positioning the reinforcing rib 117 between the first side plates 111a before bending the inserted first side plate 111a.

In this way, the first side plate 111a and the second side plate 111b are bent downward with respect to the support plate 111, and both ends of the reinforcing rib 117 are positioned between the first side plates 111a .

The reinforcing rib 117 is a long plate member and is provided at a lower portion of the support plate 111 to support the support plate 111 so that the support plate 111 is not sagged or deformed by a load acting in a direction perpendicular to the support plate 111 . The upper surface of the reinforcing rib 117 is in contact with the lower surface of the supporting plate 111 and both ends of the reinforcing rib 117 can be selectively fixed to the insertion hole 111a-4 of the first side plate 111a. Although not shown, an insertion hole may be formed on the side of the second side plate 111b in order to insert both ends of the reinforcing rib 117 according to the installation environment. Accordingly, the plurality of reinforcing ribs 117 may be provided in parallel at regular intervals, and may be installed along the width direction and the longitudinal direction so as to form a lattice shape perpendicular to each other.

Next, although not shown, the caulking treatment-calking treatment on the insertion protrusions 117a of the reinforcing ribs 117 using the caulking tool is carried out by vertically inserting the tip of the insertion protrusions 117a using a caulking tool And a method of expanding the front end face.

As a result, when the tip of the insertion protrusion 117a of the reinforcing rib 117 inserted into the insertion hole 111a-4 of the first side plate 111a is caulked, the cross-sectional area of the tip of the insertion protrusion 117a becomes the insertion hole 111a-4 so that the insertion protrusion 117a does not come out of the insertion hole 111a-4.

The reinforcing rib 117 may be inserted into the insertion hole 111a-4 of the first side plate 111a and then fixed by welding.

The grating 100 manufactured by the method of manufacturing a grating according to the present invention is characterized in that the first side plate 111a and the second side plate 111b are seated on the seating plate 322 formed on the upper side of the drain pipe 300 Construction.

The rainwater flows into the water pipe 300 through the water hole 113 formed in the support plate 111. In this case,

The drain pipe 300 includes a channel portion 310 having a bottom plate 312 and a side wall plate 314 and a support portion 320 having a seating plate 322 and a fixing plate 324.

The bottom plate 312 of the flow path portion 310 extends in the longitudinal direction and the side wall plate 314 is formed so as to be bent upward from both side end portions located in the width direction of the bottom plate 312.

The seating plate 322 of the support portion 320 is bent and extended outward in the width direction from the side wall plate 314 and the fixing plate 324 is formed to be connected to the seating plate 322 in an upwardly bent manner.

The drain pipe 300 has a predetermined length and the drain pipes 300 may be extended through a drain pipe connecting piece 330 which is fitted to the fitting piece 314a formed in the side wall plate 314 according to the installation length.

The side wall plate 314 is provided with a slot 314b so that when the drain pipe 300 is used as a mold, a support piece 340 provided to support a reinforcing bar or the like can be coupled.

According to the method of manufacturing a grating according to the present invention, the panel 110 for manufacturing the grating 100 is placed on the mold apparatus 200 and transferred in one direction. In the transferring process, the piercing process step S130, the burring process step S140, the non-slip mold forming process S150, the side plate bending process piece removing process S160, the connecting piece removing process S170, The step S180 and the step of installing the reinforcing ribs S190 can be performed successively to realize the automation of production that continuously performs a series of processes through one mold apparatus, B) By providing a plurality of holes 113 in the support plate 111 and a flange 114 bending downwardly around the holes 113, the grating 100 can be easily manufactured. And the durability is improved. The grating 100 can be integrally formed from one panel 110. In addition, the grating 100 can be manufactured in the same manner as the grating 100, E) the protrusions of the reinforcing ribs 117 are caulked so that even if a heavy load is applied to the grating 100 due to a vehicle or the like, the reinforcing ribs 117 can be prevented from being damaged F) Since the projecting piece is formed on the side plate, the grating 100 does not flow in the drain pipe 300 even if the pedestrian or the vehicle passes through it, so that noise can be prevented G) slip prevention protrusions 115 are formed on the upper surface of the support plate 111 of the grating 100 so that even when water is accumulated on the upper surface of the grating 100 or snow is piled up, It is possible to minimize the risks by preventing the vehicle from slipping, h) is advantageous to improve the stability of the operator for replacement or repair, such as the grating 100 can be maintained a state in which the turn-over the drain pipe 300. The

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. But should be construed as falling within the scope of the claims of the invention.

S110: preparing a panel for manufacturing a grating,
S120: positioning the panel on the mold side,
S130: a piercing process step of forming a burring hole in a predetermined position and number in a support plate of the panel,
S140: a deburring process step for sequentially expanding the burring hole from the initially formed burring hole to form the repair hole,
S150: molding a non-slip protrusion protruding from the upper surface of the support plate,
S160: removing the side plate bending piece located at a corner of the support plate,
S170: removing the connecting piece located between the side plate bending pieces,
S180: a bending process step of bending the first and second side plates of the support plate downward,
S190: a step of installing a reinforcing rib supporting the support plate on the lower side of the support plate,
100: grating,
110: panel,
111: support plate,
111a: a first side plate,
111a-1: a first engagement projection,
111a-2: a second coupling groove,
111a-4: insertion hole,
111a-5: pin guide hole,
111b: second side plate,
111b-1: a first coupling groove,
111b-2: a second engagement projection,
111c: connecting piece,
112: Burlinghall,
113: Number of balls,
114: flange,
115: Slip prevention projection,
116: side plate bending processing piece,
117: reinforcing rib,
117a: insertion protrusion,
200: mold apparatus,
210: a piercing process performing unit,
220: burring process performing unit,
230: non-slip protrusion forming part,
240: bending process deflection rejection,
B / L: Bending line,
300: drain pipe,
310: channel portion,
312: bottom plate,
314: side wall plate,
314a:
314b: slot,
320: Support,
322: seat plate,
324: Fixing plate,
324a: pin hole,
330: Drain pipe connection piece,
340: support piece,
350: Hinge pin.

Claims (8)

(a) preparing a panel for manufacturing a grating;
(b) positioning the panel on a mold side;
(c) a piercing process step of transferring the panel in one direction, wherein a burring hole is formed at a predetermined position and number in a support plate;
(d) a burring process step of sequentially forming the burring holes from the initially formed burring hole while continuously conveying the panel after the piercing process step, and forming the number holes according to the predetermined number;
(e) molding the non-slip protrusions protruding from the upper surface of the support plate around the number of holes in accordance with a predetermined position and number after performing the burring process step;
(f) removing the side plate bending piece located at a corner of the support plate;
(g) removing a connecting piece located between the side plate bending pieces of the support plate;
(h) a pair of first side plates positioned in the width direction of the support plate, and a pair of second side plates positioned in the longitudinal direction of the support plate; And
(i) providing a plurality of reinforcing ribs for supporting a supporting plate on a lower side of the supporting plate;
≪ / RTI >
The method according to claim 1,
(C) to (e) are performed while the panel for manufacturing the grating is transferred, and a total of seven pairs of the predetermined positions and the number of burr holes are arranged in two rows in the width direction The number of holes is formed to correspond to the number of burring holes and the non-slip protrusions are formed in such a manner that the twenty-nine pieces are arranged side by side in the longitudinal direction, and are positioned on all four sides of the number holes. Wherein the protruding protrusions are formed on the outer circumferential surface of the grating.
The method according to claim 1,
In the step (h), the first tooth claw portions provided at both ends of the first side plate are engaged with first coupling grooves provided at both ends of the second side plate, and the second coupling groove provided at both ends of the first side plate is engaged with the second side plate Is engaged with a second coupling protrusion provided at both ends of the second coupling protrusion.
The method according to claim 1,
Wherein an insertion protrusion is formed on both ends of the reinforcing rib, and the insertion protrusion is inserted into and inserted into the insertion hole of the first side plate.
The method according to claim 1,
In the step (h)
Wherein the bending process is performed on the first side plate and the second side plate after positioning the reinforcing rib between the first side plate and the second side plate before bending the first side plate and the second side plate.
6. The method of claim 5,
After the step (h) is performed, a caulking process step is further performed in which the tip of the insertion protrusion of the reinforcing rib inserted into the insertion hole of the first side plate is vertically extended with respect to the front end surface by using a caulking tool to enlarge the cross-sectional area .
The method according to claim 6,
Wherein both side surfaces of the reinforcing ribs are interfered with and fixed to flanges disposed on both sides in the width direction of the reinforcing ribs.
6. The method of claim 5,
Further comprising the step of fixing the tip of the insertion protrusion of the reinforcing rib inserted into the insertion hole of the first side plate through welding after performing the step (h).

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