CN216153312U - Double-crawler pressing device for composite board - Google Patents

Abstract

The utility model discloses a double-track pressing device for a composite plate, which comprises an upper-layer track and a lower-layer track, wherein fixed racks are arranged on two sides perpendicular to a conveying direction, the upper-layer track is connected with the fixed racks in a sliding mode, the lower-layer track is fixedly connected with the fixed racks, a hydraulic cylinder is arranged in the fixed racks, a connecting assembly is sleeved outside a piston rod of the hydraulic cylinder, the connecting assembly is connected with the upper-layer track, a plurality of adjusting gaskets are sleeved outside the piston rod at the end portions of the connecting assembly and the hydraulic cylinder, and the connecting assembly abuts against the adjusting gaskets. The utility model has the following beneficial effects: according to the clearance of required adjustment, set up the adjustment shim that corresponds thickness, reach the effect of accurate adjustment clearance, guarantee that upper track and lower floor's track can be fine pressfitting composite sheet, guarantee the product quality to the pneumatic cylinder need not to keep hydraulic pressure power, very big energy can be saved.

Description

Double-crawler pressing device for composite board

Technical Field

The utility model relates to the technical field of composite board production, in particular to a double-crawler pressing device for a composite board.

Background

The chinese utility model patent CN204938086U discloses a double-track walking mechanism for a composite board production line, which comprises an upper-layer track and a lower-layer track; the upper-layer crawler belt and the lower-layer crawler belt have the same structure; the upper-layer crawler comprises a crawler plate, a connecting shaft, a supporting bearing, a roller, a guide bearing, a guide rail, a large connecting wheel, a transmission shaft and a variable frequency motor; the connecting shaft is pivoted on the track shoe, the supporting bearing is arranged on the outer side of the connecting shaft, and the roller is arranged on the inner side of the connecting shaft; the supporting bearing is supported on the upper surface of the guide rail; the guide bearing is mounted on the bottom surface of the track shoe and is abutted against the inner side surface of the guide rail; the large chain wheel is abutted against the roller and can push the roller; big sprocket is connected to transmission shaft one end, and inverter motor is connected to the other end to according to the thickness of production composite slab, it passes through the removal of pneumatic cylinder drive upper track, thereby adjust the clearance between upper track and the lower floor's track, but when the distance of adjustment is very little, for example when 1mm, the unable accurate adjustment clearance between upper track and the lower floor's track of this pneumatic cylinder can't compress tightly the composite slab, thereby reduce the quality of product, and the pneumatic cylinder need keep hydraulic pressure force to support upper track all the time, energy resource consumption is big.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide a double-track pressing device for a composite plate, which comprises an upper-layer track, a lower-layer track, a fixed frame, a hydraulic cylinder, a connecting assembly and an adjusting gasket.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a double-crawler pressing device for a composite plate comprises an upper-layer crawler and a lower-layer crawler, wherein fixed racks are arranged on two sides of the upper-layer crawler or the lower-layer crawler along a conveying direction perpendicular to the conveying direction of the upper-layer crawler or the lower-layer crawler, the upper-layer crawler is connected with the fixed racks in a sliding mode in the vertical direction, the lower-layer crawler is fixedly connected with the fixed racks, and the upper-layer crawler is located above the lower-layer crawler;

be equipped with the pneumatic cylinder in the fixed frame, coupling assembling is established to the piston rod overcoat of pneumatic cylinder, coupling assembling with upper track is connected, is located coupling assembling with piston rod overcoat between the pneumatic cylinder tip is equipped with a plurality of adjusting shim, coupling assembling contradicts on the adjusting shim.

As preferred, the upper track includes the track frame, go up the track frame along perpendicular to direction of delivery's both sides all be equipped with the boss that fixed frame corresponds, the boss with fixed frame sliding connection, coupling assembling includes engaging lug and connecting axle, the engaging lug cover is located outside the piston rod of pneumatic cylinder and with the piston rod fixed connection of pneumatic cylinder, adjustment gasket cover is located the engaging lug with outside the piston rod between the pneumatic cylinder tip, the connecting axle is worn to locate in the engaging lug, just the both ends of connecting axle are worn to locate in the boss and with boss fixed connection, through setting up like this, simple structure is convenient for the pneumatic cylinder with go up the track frame and connect.

Preferably, the thickness of the adjusting shim is larger than or equal to 1mm, through the arrangement, a plurality of adjusting shims with proper thickness can be selected to be sleeved outside the piston rod of the hydraulic cylinder according to the gap required to be adjusted between the upper-layer crawler and the lower-layer crawler, and the precision of gap adjustment reaches 1 mm.

As preferred, the boss all is equipped with guide roller along direction of delivery's both sides, guide roller's axis sets up with direction of delivery is perpendicular, and both sides guide roller respectively with two relative inside walls of fixed frame are contradicted, and through setting up like this, guide roller with the inside wall of fixed frame is contradicted and is right the pneumatic cylinder drive upper track plays the guide effect.

Preferably, the size of the upper-layer crawler belt along the conveying direction is smaller than that of the lower-layer crawler belt along the conveying direction, the outlet end of the upper-layer crawler belt is aligned with the outlet end of the lower-layer crawler belt along the vertical direction, and the arrangement is that the inlet end of the upper-layer crawler belt is located behind the inlet end of the lower-layer crawler belt along the conveying direction, so that a stable and synchronous feeding hole is formed before composite materials enter the double crawler belts, and the probability of material breakage is reduced during feeding.

Preferably, the interval between the inlet end of the upper-layer crawler and the inlet end of the lower-layer crawler along the conveying direction is 10% -20% of the length of the composite plate, and by such arrangement, if the interval between the inlet end of the upper-layer crawler and the inlet end of the lower-layer crawler along the conveying direction is less than 10% of the length of the composite plate, the effect that the composite material stably enters the double crawler cannot be ensured; if the spacing dimension of the inlet end of the upper-layer crawler and the inlet end of the lower-layer crawler along the conveying direction is greater than 20% of the length of the composite plate, the dimension of the double crawler along the conveying direction is too long because the double crawler needs to have a sufficient distance to press and combine materials to be combined.

Preferably, the upper-layer track comprises an upper track frame, the lower-layer track comprises a lower track frame, the upper track frame and the lower track frame are respectively provided with a track guide rail along the circumferential direction, the outer sides of the upper track frame and the lower track frame are respectively provided with a track assembly in a sleeved mode, the upper track frame and the lower track frame are respectively provided with a driving assembly, each track assembly comprises a plurality of driven sprockets, a plurality of track plates, a plurality of articulated shafts, a plurality of supporting bearings and a plurality of driven sprockets, the inner sides of the adjacent track plates are articulated through the articulated shafts, the supporting bearings are sleeved on the outer sides of the articulated shafts and abutted against the track guide rails, the driven sprockets are sleeved on the inner sides of the articulated shafts, the driving assemblies are connected with the driven sprockets, the driving assemblies act with the driven sprockets through the setting, and the supporting bearings abut against the track guide rails and play a supporting role on the track guide rails, the crawler plates move along the direction of the crawler guide rail, and materials required to be compounded are pressed into a composite plate through the two layers of crawler plates and the composite plate is driven to be conveyed.

Preferably, the inside of grip-pad still is equipped with guide bearing, guide bearing with the grip-pad is rotated and is connected, guide bearing's lateral wall with the inside wall of track rail is contradicted, through setting up like this, guide bearing with the track rail cooperation plays the guide effect for the removal of grip-pad, avoids the removal of grip-pad takes place the skew condition.

Preferably, the driving assembly comprises a track motor, a driving sprocket, a driven sprocket, a driving shaft and a driven shaft, the driving shaft and the driven shaft penetrate through the upper track frame and the lower track frame respectively along two sides of the conveying direction, an output shaft of the track motor is coaxially and fixedly connected with the driving shaft, the driving sprocket is sleeved outside the driving shaft, the driven sprocket is sleeved outside the driven shaft, the driving sprocket and the driven sprocket are meshed with the driven sprocket, and through the arrangement, the output shaft of the track motor rotates to drive the driving shaft to rotate, so that the driving sprocket is driven to rotate, and the track shoe is driven to move along the direction of the track guide rail by meshing the driving sprocket with the driven sprocket and the driven sprocket.

Preferably, the driving assembly further comprises a tensioning electric cylinder, the upper track frame and the lower track frame are both provided with the tensioning electric cylinder, the upper track frame and the lower track frame are both provided with an installation sliding plate, the installation sliding plate is connected with the upper track frame and the lower track frame in a sliding mode along the conveying direction, the driving shaft penetrates through the installation sliding plate, the track motor is arranged on the installation sliding plate, a piston rod of the tensioning electric cylinder is connected with the installation sliding plate, and through the arrangement, the tensioning degree of the track shoe is adjusted through the expansion and contraction of the piston rod of the tensioning electric cylinder, and the normal operation of the track shoe is guaranteed.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the double-crawler pressing device, the adjusting gaskets with corresponding thicknesses are sleeved outside the piston rods positioned at the ends of the connecting assembly and the hydraulic cylinder according to the gap required to be adjusted between the upper crawler and the lower crawler, the hydraulic cylinder does not need to maintain hydraulic pressure after the adjusting gaskets are sleeved, the connecting assembly abuts against the adjusting gaskets, the effect of accurately adjusting the gap between the upper crawler and the lower crawler is achieved, the upper crawler and the lower crawler can be well pressed on a composite board, the quality of a product is guaranteed, and energy can be greatly saved as the hydraulic cylinder does not need to maintain hydraulic pressure.

Drawings

FIG. 1 is a schematic side view of a dual track stitching assembly in accordance with an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1 according to the embodiment of the present invention.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. an upper-layer crawler belt; 2. a lower-layer crawler belt; 3. fixing the frame; 4. a hydraulic cylinder; 5. a connecting assembly; 6. adjusting the gasket; 11. an upper crawler frame; 12. a boss; 13. a guide roller; 14. a track shoe; 15. hinging a shaft; 16. a drive sprocket; 17. a drive shaft; 18. mounting a sliding plate; 19. tensioning the electric cylinder; 51. connecting lugs; 52. and (7) connecting the shafts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.

Referring to the drawings, the embodiment discloses a double-track pressing device for a composite board, which comprises an upper-layer track 1 and a lower-layer track 2, wherein two sides perpendicular to the conveying direction of the upper-layer track 1 or the lower-layer track 2 are respectively provided with three fixed frames 3, in the embodiment, the three fixed frames 3 on each side are arranged at intervals along the conveying direction, the upper-layer track 1 and the fixed frames 3 are connected in a sliding mode along the vertical direction, the lower-layer track 2 is fixedly connected with the fixed frames 3, and the upper-layer track 1 is located above the lower-layer track 2;

be equipped with pneumatic cylinder 4 in the fixed frame 3, coupling assembling 5 is established to the piston rod overcoat of pneumatic cylinder 4, and coupling assembling 5 is connected with upper track 1, and the piston rod overcoat that is located between coupling assembling 5 and the 4 tip of pneumatic cylinder is equipped with a plurality of adjusting shim 6, and coupling assembling 5 contradicts on adjusting shim 6.

By adopting the double-track pressing device, the adjusting gasket 6 with the corresponding thickness is sleeved outside the piston rod at the end part of the connecting component 5 and the hydraulic cylinder 4 according to the gap required to be adjusted between the upper track 1 and the lower track 2, the hydraulic cylinder 4 does not need to maintain the hydraulic pressure after the sleeving of the adjusting gasket 6 is completed, the connecting component 5 is abutted against the adjusting gasket 6, the effect of accurately adjusting the gap between the upper track 1 and the lower track 2 is achieved, the composite board can be well pressed between the upper track 1 and the lower track 2, the quality of the product is ensured, and the hydraulic cylinder 4 does not need to maintain the hydraulic pressure, so that the energy can be greatly saved.

Further, the upper-layer crawler 1 comprises an upper crawler frame 11, bosses 12 corresponding to the fixed frame 3 are arranged on both sides of the upper crawler frame 11 along a direction perpendicular to the conveying direction, the fixed frame 3 is a hollow rectangular frame, the bosses 12 are embedded in the fixed frame 3, the bosses 12 are slidably connected with the fixed frame 3, the connecting assembly 5 comprises connecting lugs 51 and connecting shafts 52, the connecting lugs 51 are sleeved outside piston rods of the hydraulic cylinders 4 and fixedly connected with the piston rods of the hydraulic cylinders 4, the adjusting gaskets 6 are sleeved outside the piston rods between the connecting lugs 51 and the end portions of the hydraulic cylinders 4, the connecting shafts 52 are arranged in the connecting lugs 51 in a penetrating manner, both ends of the connecting shafts 52 are arranged in the bosses 12 in a penetrating manner and fixedly connected with the bosses 12, specifically, the connecting lugs 51 are provided with threaded holes along a direction perpendicular to the axis, and are in threaded connection with the threaded holes of the connecting lugs 51 by screws until the connecting lugs abut against the piston rods of the hydraulic cylinders 4, the boss 12 is internally provided with a threaded hole vertical to the axis of the connecting shaft 52, and the threaded hole of the boss 12 is connected with a screw until the threaded hole is abutted against the connecting shaft 52, so that the hydraulic cylinder 4 is connected with the upper crawler frame 11 conveniently.

The thickness of adjusting shim 6 is greater than or equal to 1mm, for example, adjusting shim 6 includes that thickness is 1mm, 2mm, 5mm, 10mm, 20mm or 50 mm's gasket, can select the clearance of the adjusting shim 6 cover of a plurality of suitable thickness to locate outside the piston rod of pneumatic cylinder 4 according to the required adjustment between upper track 1 and the lower floor track 2, and the precision of clearance adjustment reaches 1 mm.

The boss 12 all is equipped with guide roller 13 along direction of delivery's both sides, and guide roller 13's axis sets up with direction of delivery is perpendicular, and guide roller 13 rotates with boss 12 to be connected, and guide roller 13 of both sides contradicts with two relative inside walls of fixed frame 3 respectively, and guide roller 13 contradicts and plays the guide effect to pneumatic cylinder 4 drive upper track 1 on the inside wall of fixed frame 3.

The size of upper track 1 along direction of delivery is less than the size of lower floor's track 2 along direction of delivery, and the exit end of upper track 1 aligns the setting along vertical direction with the exit end of lower floor's track 2, and the entrance point of upper track 1 lies in the rear of the entrance point of lower floor's track 2 along direction of delivery promptly, has very stable synchronous feed inlet before compound material gets into two tracks like this, and reduces the damaged probability of material when the feeding.

The spacing dimension between the inlet end of the upper-layer crawler 1 and the inlet end of the lower-layer crawler 2 along the conveying direction is 10% -20% of the length of the composite plate, and if the spacing dimension between the inlet end of the upper-layer crawler 1 and the inlet end of the lower-layer crawler 2 along the conveying direction is less than 10% of the length of the composite plate, the effect that the composite material stably enters the double crawler cannot be guaranteed; if the spacing dimension between the inlet end of the upper-layer crawler 1 and the inlet end of the lower-layer crawler 2 along the conveying direction is greater than 20% of the length of the composite plate, the dimension of the double crawler along the conveying direction is too long because the double crawler needs to have a sufficient distance to press and combine the materials to be combined.

The lower-layer crawler 2 comprises a lower crawler frame fixedly connected with a fixed frame 3, the upper crawler frame 11 and the lower crawler frame are respectively provided with a crawler guide rail along the circumferential direction, the outer sides of the upper crawler frame 11 and the lower crawler frame are respectively sleeved with a crawler component, the upper crawler frame 11 and the lower crawler frame are respectively provided with a driving component, each crawler component comprises a plurality of driven sprockets, a plurality of crawler plates 14, a plurality of articulated shafts 15, a plurality of supporting bearings and a plurality of driven sprockets, the inner sides of the adjacent crawler plates 14 are articulated through the articulated shafts 15, the axes of the articulated shafts 15 are perpendicular to the conveying direction, the two sides of the adjacent crawler plates 14 along the conveying direction are respectively provided with the articulated shafts 15 in a penetrating manner, the supporting bearings are sleeved on the outer sides of the articulated shafts 15 and abut against the crawler guide rails, the driven sprockets are sleeved on the inner sides of the articulated shafts 15, specifically, one side of the articulated shafts 15 axially positioned outside the crawler plates 14 is the outer side, one side of the articulated shaft 15, which is axially located in the track shoe 14, is an inner side, the driving assembly is connected with the driven sprocket, the articulated shaft moves with the driven sprocket through the driving assembly, the supporting bearing props against the track guide rail to support the track shoe 14, the track shoe 14 moves along the direction of the track guide rail, and materials required to be compounded are pressed into a composite board through the two layers of track shoes 14 and the composite board is driven to be conveyed.

The inner side of the track shoe 14 is further provided with a guide bearing, one side of the track shoe 14 facing the upper track frame 11 or the lower track frame is the inner side, one side of the track shoe 14 facing away from the upper track frame 11 or the lower track frame is the outer side, the guide bearing is rotatably connected with the track shoe 14, the outer side wall of the guide bearing is abutted against the inner side wall of the track guide rail, the guide bearing is matched with the track guide rail to play a role in guiding the movement of the track shoe 14, and the situation that the movement of the track shoe 14 deviates is avoided.

The driving assembly comprises a track motor, a driving chain wheel 16, a driven chain wheel, a driving shaft 17 and a driven shaft, the driving shaft 17 and the driven shaft are respectively arranged on two sides of the upper track frame 11 and the lower track frame along the conveying direction in a penetrating mode, an output shaft of the track motor is coaxially and fixedly connected with the driving shaft 17, the driving chain wheel 16 is sleeved outside the driving shaft 17, the driven chain wheel is sleeved outside the driven shaft, the driving chain wheel 16 and the driven chain wheel are meshed with the driven chain wheel, the output shaft of the track motor rotates to drive the driving shaft 17 to rotate, the driving chain wheel 16 is driven to rotate, the driving chain wheel 16 and the driven chain wheel are meshed with the driven chain wheel, and the driving track shoe 14 moves along the direction of the track guide rail.

The driving assembly further comprises a tensioning electric cylinder 19, the upper track frame 11 and the lower track frame are respectively provided with the tensioning electric cylinder 19, the upper track frame 11 and the lower track frame are respectively provided with an installation sliding plate 18, the installation sliding plate 18 is connected with the upper track frame 11 and the lower track frame in a sliding mode along the conveying direction, the upper track frame 11 and the lower track frame extend along the conveying direction, the installation sliding plate 18 is provided with a sliding block matched with the sliding rail, the sliding block is sleeved outside the sliding rail, the driving shaft 17 penetrates through the installation sliding plate 18, a rolling bearing is arranged between the driving shaft 17 and the installation sliding plate 18, the track motor is arranged on the installation sliding plate 18, the axis of a piston rod of the tensioning electric cylinder 19 is parallel to the conveying direction, the piston rod of the tensioning electric cylinder 19 is connected with the installation sliding plate 18, the tensioning degree of the track shoe 14 is adjusted through the expansion and contraction of the piston rod of the tensioning electric cylinder 19, and normal operation of the track shoe 14 is guaranteed.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (10)

1. A double-crawler pressing device for a composite plate comprises an upper-layer crawler (1) and a lower-layer crawler (2), wherein fixed frames (3) are arranged on two sides of the upper-layer crawler (1) or the lower-layer crawler (2) along a conveying direction perpendicular to the conveying direction, the upper-layer crawler (1) is connected with the fixed frames (3) in a sliding mode along the vertical direction, the lower-layer crawler (2) is fixedly connected with the fixed frames (3), and the upper-layer crawler (1) is located above the lower-layer crawler (2);

the novel crawler belt type crawler belt fixing device is characterized in that a hydraulic cylinder (4) is arranged in the fixing rack (3), a piston rod jacket of the hydraulic cylinder (4) is provided with a connecting assembly (5), the connecting assembly (5) is connected with the upper crawler belt (1) and located between the connecting assembly (5) and the end portion of the hydraulic cylinder (4), a plurality of adjusting gaskets (6) are arranged on the piston rod jacket, and the connecting assembly (5) is abutted to the adjusting gaskets (6).

2. A twin-track stitching device according to claim 1, characterised in that the upper track (1) comprises an upper track frame (11), the two sides of the upper crawler frame (11) along the direction vertical to the conveying direction are both provided with a lug boss (12) corresponding to the fixed frame (3), the boss (12) is connected with the fixed frame (3) in a sliding way, the connecting assembly (5) comprises a connecting lug (51) and a connecting shaft (52), the connecting lug (51) is sleeved outside the piston rod of the hydraulic cylinder (4) and is fixedly connected with the piston rod of the hydraulic cylinder (4), the adjusting gasket (6) is sleeved outside the piston rod between the connecting lug (51) and the end part of the hydraulic cylinder (4), the connecting shaft (52) is arranged in the connecting lug (51) in a penetrating way, and the two ends of the connecting shaft (52) penetrate through the boss (12) and are fixedly connected with the boss (12).

3. A twin track stitching device according to claim 1, characterised in that the shim (6) has a thickness greater than or equal to 1 mm.

4. A double-track stitching device according to claim 2, wherein the bosses (12) are provided with guide rollers (13) on both sides in the conveying direction, the axes of the guide rollers (13) are perpendicular to the conveying direction, and the guide rollers (13) on both sides respectively abut against two opposite inner side walls of the fixed frame (3).

5. A twin-track stitching device according to any one of claims 1 to 4 characterised in that the upper track (1) has a dimension in the conveying direction which is smaller than the dimension of the lower track (2) in the conveying direction and the outlet end of the upper track (1) is vertically aligned with the outlet end of the lower track (2).

6. A twin track stitching assembly as claimed in claim 5 in which the spacing between the inlet end of the upper track (1) and the inlet end of the lower track (2) in the transport direction is in the range 10% to 20% of the length of the composite panel.

7. The twin-track stitching device according to any one of claims 1 to 4, wherein the upper track (1) comprises an upper track frame (11), the lower track (2) comprises a lower track frame, the upper track frame (11) and the lower track frame are both provided with track rails along the circumferential direction, the upper track frame (11) and the lower track frame are both externally sleeved with track assemblies, the upper track frame (11) and the lower track frame are both provided with driving assemblies, each track assembly comprises a plurality of driven sprockets, a plurality of track shoes (14), a plurality of articulated shafts (15), a plurality of support bearings and a plurality of driven sprockets, the inner sides of adjacent track shoes (14) are articulated through the articulated shafts (15), the support bearings are sleeved on the outer sides of the articulated shafts (15), and the support bearings are abutted against the track rails, the driven chain wheel is sleeved on the inner side of the hinged shaft (15), and the driving assembly is connected with the driven chain wheel.

8. The dual track stitching device of claim 7, wherein the track shoe (14) is further provided with a guide bearing on an inner side thereof, the guide bearing being rotatably coupled to the track shoe (14), an outer sidewall of the guide bearing abutting against an inner sidewall of the track rail.

9. The double-track stitching device according to claim 7, wherein the driving assembly comprises a track motor, a driving sprocket (16), a driven sprocket, a driving shaft (17) and a driven shaft, the driving shaft (17) and the driven shaft are respectively arranged on two sides of the upper track frame (11) and the lower track frame along the conveying direction, an output shaft of the track motor is coaxially and fixedly connected with the driving shaft (17), the driving sprocket (16) is sleeved outside the driving shaft (17), the driven sprocket is sleeved outside the driven shaft, and the driving sprocket (16) and the driven sprocket are meshed with the driven sprocket.

10. The dual-track stitching device according to claim 9, wherein the driving assembly further comprises an electric tensioning cylinder (19), the electric tensioning cylinder (19) is disposed on each of the upper track frame (11) and the lower track frame, a mounting slider (18) is disposed on each of the upper track frame (11) and the lower track frame, the mounting slider (18) is slidably connected to the upper track frame (11) and the lower track frame along a conveying direction, the driving shaft (17) is inserted into the mounting slider (18), the track motor is disposed on the mounting slider (18), and a piston rod of the electric tensioning cylinder (19) is connected to the mounting slider (18).

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