CN219074794U - Connecting rod material loading mould - Google Patents

Abstract

The utility model discloses a connecting rod feeding die which comprises a bottom plate, wherein a mounting structure is mounted in the middle of the upper end of the bottom plate, a lifting rod structure is movably mounted in the mounting structure, a connecting plate is mounted at the rear end of the mounting structure, a connecting seat is mounted at one end of the connecting plate, a driving assembly is mounted at one end, far away from the connecting plate, of the connecting seat, the output end of the driving assembly movably penetrates through the connecting seat and is in transmission connection with the lifting rod structure, a nail pressing die is mounted at the upper end of the mounting structure, the upper end of the lifting rod structure extends to the upper side of the mounting structure and is positioned below the nail pressing die, and a push rod structure is mounted at the lower part of the front end of the mounting structure. The connecting rod feeding mold is vertically distributed, can clamp and fix the connecting rod body of the engine into a vertical state, has smaller station occupation area, forms an inclined plane transmission structure by the driving rod and the lifting block, and has high transmission reliability and high stability and reliability for clamping and fixing the connecting rod body of the engine.

Description

Connecting rod material loading mould

Technical Field

The utility model relates to the technical field of clamping dies, in particular to a connecting rod feeding die.

Background

The engine connecting rod, also called engine piston connecting rod, is used to connect the piston and the crankshaft and transmit the gas pressure to the crankshaft, so that the reciprocating motion of the piston is changed into the rotating motion of the crankshaft, and work is done to the outside. The engine connecting rod comprises a rod body, a connecting rod bearing cover, a connecting rod bolt, a connecting rod bearing and a locating pin, wherein connecting rod bolt perforations and pin holes are formed in the rod body and the connecting rod bearing cover. The structure of the engine link body is shown in fig. 9.

In order to ensure the assembly precision between the engine connecting rod body and the connecting rod bearing cover and improve the assembly operation convenience, the pin is generally pressed into a pin hole on the engine connecting rod body, so that the pin plays a role in assembly positioning. When the pin is pressed on the engine connecting rod body, the clamping of the engine connecting rod body is fixed, the engine connecting rod body is clamped in place before the pin is pressed, the clamping stability of the engine connecting rod body is ensured in the pin pressing process, the engine connecting rod body is convenient to take down after the pin is pressed, the structure of the traditional equipment is extremely complex, the reliability is reduced due to the increase of parts, the assembly efficiency is low, the occupied space is large, and the station occupied area of the assembly equipment is increased. Therefore, we propose a connecting rod feeding mold.

Disclosure of Invention

The utility model mainly aims to provide a connecting rod feeding die which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the connecting rod feeding die is used for clamping and fixing the connecting rod body of the engine in the process of pressing pins in pin holes on the connecting rod body of the engine, and comprises a bottom plate, wherein a mounting structure is mounted in the middle of the upper end of the bottom plate, a lifting rod structure is movably mounted in the mounting structure, a connecting plate is mounted at the rear end of the mounting structure, a connecting seat is mounted at one end of the connecting plate, and the connecting seat is perpendicular to the connecting plate; the driving assembly is installed to the one end of keeping away from the connecting plate on the connecting seat, drive assembly's output activity runs through the connecting seat and is connected with lifting the pole structure transmission, press the nail mould is installed to mounting structure's upper end, lifting the top of pole structure and extending to mounting structure's top and being located the below of pressing the nail mould, ejector pin structure is installed to mounting structure's front end lower part, ejector pin structure is located the below of pressing the nail mould.

Preferably, the mounting structure comprises two side plates which are symmetrically arranged left and right, and a shuttle groove which is penetrated left and right is arranged on one side plate; a front plate and a rear plate are mounted between the two side plates together, and the front plate is positioned at the front side of the rear plate and is connected with the rear plate through bolts; the front end of the rear plate is provided with a first sliding groove and a second sliding groove, the first sliding groove is arranged left and right, the second sliding groove is arranged vertically, the first sliding groove and the second sliding groove are distributed in a crisscross manner, and the shuttle groove is communicated with the first sliding groove; the nail pressing die is arranged at the upper ends of the two side plates, a rod placing groove is formed in the middle of the lower end of the nail pressing die, a positioning column is arranged on the top surface of the rod placing groove, and the positioning column is matched with a connecting rod bolt through hole on the connecting rod body of the engine; the connecting plate is arranged at the rear ends of the two side plates.

Preferably, the lifting rod structure comprises a driving rod and a lifting block which are respectively positioned in the first chute and the second chute, the driving rod is movably installed on the lifting block in a penetrating way, an inclined plane transmission structure is formed between the driving rod and the lifting block, and one end of the driving rod penetrates through the shuttle chute and is in transmission connection with the output end of the second driving assembly; the front end of the lifting block is inserted and movably provided with a support rod frame, the support rod frame is positioned above the front plate, and the support rod frame is of a shifting fork-shaped structure; and both sides of the upper end of the support rod frame are provided with support rod gaskets, and the support rod gaskets are positioned below the nail pressing die.

Preferably, the lifting block comprises a longitudinal sliding block, an insertion hole is formed in the upper portion of the front end of the longitudinal sliding block, a transmission groove is formed in the middle of the front end of the longitudinal sliding block, the transmission groove penetrates through the left end and the right end of the longitudinal sliding block and is arranged in a left-right inclined mode, a first stop surface is arranged at the lower portion of one end of the longitudinal sliding block, the upper side of the first stop surface is inclined towards the left-right symmetrical surface of the longitudinal sliding block, and the upper side of the first stop surface is connected with one side, high in the lower groove wall surface, of the transmission groove.

Preferably, the driving rod comprises a rod body, and one end of the rod body passes through the shuttle groove and is hinged with the output end of the driving assembly through a shaft; one side of the upper end of the rod body, which is far away from the driving assembly, is provided with an inclined upper driving inclined plane, one side of the lower end of the rod body, which is far away from the driving assembly, is provided with an inclined lower driving inclined plane, and the upper driving inclined plane and the lower driving inclined plane are respectively in contact fit with the upper groove wall surface and the lower groove wall surface of the transmission groove; and a second stop surface is arranged between one side, close to the driving assembly, of the lower end of the rod body and the lower driving inclined plane, and the second stop surface is matched with the first stop surface.

Preferably, the support rod frame comprises a rotating column which is inserted into the jack and movably installed in the jack, a connecting block is fixedly arranged at the front end of the rotating column, support blocks are installed on the left side and the right side of the front end of the connecting block, and two support rod gaskets are installed at the upper ends of the two support blocks through bolts respectively.

Preferably, the ejector rod structure comprises a mounting seat mounted at the lower part of the front end of the front plate, a mounting cavity is formed in the lower end of the mounting seat, the mounting cavity is an inverted T-shaped cavity and penetrates through the upper end face of the mounting seat, a sealing plate is clamped at the lower end of the mounting seat, a spring is arranged at the upper end of the sealing plate, the spring is located in the mounting cavity, a jacking column is arranged at the upper end of the spring, and the jacking column extends to the upper side of the mounting seat through the mounting cavity.

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

1. according to the connecting rod feeding die, the mounting structure, the lifting rod structure, the press nail die, the ejector rod structure and the driving assembly form the die for clamping and fixing the connecting rod body of the engine, the driving assembly drives the lifting rod structure in the mounting structure to move, so that the lifting block moves up and down, the press nail die is positioned at the upper end of the mounting structure, the ejector rod structure is positioned below the press nail die and connected with the mounting structure, and the die for clamping and fixing the connecting rod body of the engine is vertically distributed, so that the connecting rod body of the engine can be clamped and fixed into a vertical state when being clamped, the structure is more compact, the occupied space on a horizontal plane is smaller, the occupied area of a station is smaller, and the clamping and fixing operation of the connecting rod body of the engine is more convenient, so that the efficiency of clamping and fixing the connecting rod body of the engine is improved.

2. According to the connecting rod feeding mold, the lifting rod structure is arranged in the mounting structure, the mounting structure plays a role in mounting the lifting rod structure and guiding the movement of the lifting rod structure, the nail pressing mold and the ejector rod structure are connected with the mounting structure, an inner outer assembly layout is formed by the lifting rod structure, the nail pressing mold and the ejector rod structure relative to the mounting structure in assembly, and the nail pressing mold and the ejector rod structure form an upper assembly layout and a lower assembly layout, so that the mutual influence is avoided in the assembly process, the assembly is more convenient, and the assembly efficiency can be improved.

3. According to the connecting rod feeding die, when the driving assembly drives the lifting rod structure to move, the driving rod and the lifting block in the lifting rod structure form an inclined plane transmission structure, under the action of the first sliding groove and the second sliding groove on the rear plate, when the driving rod slides in the first sliding groove, the lifting block slides in the second sliding groove, so that the lifting block can be driven by the driving assembly to move up and down, the clamping and fixing of the connecting rod body of the engine can be facilitated, the inclined plane transmission structure is utilized, the transmission reliability is high, the stability and reliability of the clamping and fixing of the connecting rod body of the engine are high, the number of structures for clamping and fixing the connecting rod body of the engine can be reduced, the assembly is simpler and more convenient, meanwhile, the first sliding groove and the second sliding groove are used for installing the driving rod and the lifting block, the movement of the driving rod and the lifting block is guided, no additional structure is required to be used for guiding the movement of the driving rod and the lifting block, the number of structures is more reduced, the assembly between the lifting rod structure and the installation structure is also more convenient, the assembly is further improved, and the structure is more compact.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a connecting rod feeding mold of the present utility model;

FIG. 2 is a schematic view of a portion of the structure of the mounting structure of the present utility model;

FIG. 3 is a front view of a portion of the structure of the engine connecting rod body between the pin die and the ejector pin structure;

FIG. 4 is a schematic view of a portion of the structure of the mounting structure and the lift bar structure of the present utility model;

FIG. 5 is a schematic view of the structure of the lifting block of the present utility model;

FIG. 6 is a schematic view of the structure of the driving rod of the present utility model;

FIG. 7 is a schematic view of the structure of the bracket of the present utility model;

FIG. 8 is a schematic cross-sectional view of the ejector pin structure of the present utility model;

fig. 9 is a schematic structural view of an engine link body.

In the figure: 1. a bottom plate; 2. a mounting structure; 3. a lifting rod structure; 4. nail pressing mold; 5. a connecting plate; 6. a connecting seat; 7. a drive assembly; 8. a push rod structure; 9. an engine connecting rod body; 91. a pin hole; 21. a side plate; 211. a shuttle groove; 22. a front plate; 23. a rear plate; 231. a first chute; 232. a second chute; 31. a lifting block; 311. a longitudinal slide block; 312. a jack; 313. a transmission groove; 314. a first stop surface; 32. a driving rod; 321. a rod body; 322. an upper driving inclined plane; 323. a second stop surface; 324. a lower driving inclined plane; 33. a support rod rack; 331. a connecting block; 332. rotating the column; 333. a support block; 34. a support rod gasket; 81. a mounting base; 82. a mounting cavity; 83. a sealing plate; 84. a spring; 85. and (5) a top column.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-8, the connecting rod feeding mold is used for clamping and fixing an engine connecting rod body 9 in the process of pressing pins in pin holes 91 on the engine connecting rod body 9, and comprises a bottom plate 1, wherein a mounting structure 2 is mounted in the middle of the upper end of the bottom plate 1, a lifting rod structure 3 is movably mounted in the mounting structure 2, a connecting plate 5 is mounted at the rear end of the mounting structure 2, a connecting seat 6 is mounted at one end of the connecting plate 5, and the connecting seat 6 is vertical to the connecting plate 5; the one end of keeping away from connecting plate 5 on the connecting seat 6 is installed drive assembly 7, and drive assembly 7's output activity runs through connecting seat 6 and is connected with lifting the pole structure 3 transmission, and press nail mould 4 is installed to the upper end of mounting structure 2, lifts the upper end of pole structure 3 and extends to the top of mounting structure 2 and lie in the below of pressing nail mould 4, and ejector pin structure 8 is installed to the front end lower part of mounting structure 2, and ejector pin structure 8 is located the below of pressing nail mould 4.

The driving component 7 is any one of an air cylinder, a hydraulic cylinder and an electric push rod; in a specific embodiment, the drive assembly 7 is preferably a hydraulic cylinder.

As a further explanation of the above technical solution, the mounting structure 2 includes two side plates 21 symmetrically arranged in a left-right direction, and a shuttle slot 211 penetrating in a left-right direction is provided on one side plate 21; a front plate 22 and a rear plate 23 are commonly installed between the two side plates 21, the front plate 22 is positioned on the front side of the rear plate 23 and is connected with the rear plate 23 through bolts, and the front plate 22 is contacted with the upper end face of the bottom plate 1; the front end of the rear plate 23 is provided with a first sliding groove 231 and a second sliding groove 232, the first sliding groove 231 is arranged left and right, the second sliding groove 232 is arranged vertically, the first sliding groove 231 and the second sliding groove 232 are distributed in a crisscross manner, and the shuttle groove 211 is communicated with the first sliding groove 231; the nail pressing die 4 is arranged at the upper ends of the two side plates 21, a rod placing groove is formed in the middle of the lower end of the nail pressing die 4, the rod placing groove is matched with the large end of the engine connecting rod body 9, and the positioning column is matched with the connecting rod bolt through hole on the engine connecting rod body; when the engine connecting rod body 9 is clamped, the end face of the large end of the engine connecting rod body 9 is contacted with the groove top face of the rod placing groove, and the positioning column is inserted into the connecting rod bolt through hole, so that the engine connecting rod body 9 is accurately clamped in place. The connection plate 5 is detachably and fixedly mounted at the rear ends of the two side plates 21 by bolts.

As a further explanation of the above technical solution, the lifting rod structure 3 includes a driving rod 32 and a lifting block 31 respectively located in a first chute 231 and a second chute 232, the lifting block 31 can slide up and down in the second chute 232, the driving rod 32 can slide left and right in the first chute 231, the driving rod 32 is movably inserted and installed on the lifting block 31, and an inclined plane transmission structure is formed between the driving rod 32 and the lifting block 31; when the driving rod 32 slides to one side, the lifting block 31 can be pushed to rise, and when the driving rod 32 slides to the other side, the lifting block 31 can be driven to move downwards; one end of the driving rod 32 passes through the shuttle groove 211 and is in transmission connection with the output end of the second driving component 7, and the second driving component 7 can drive the driving rod 32 to slide, so that the up-and-down movement of the lifting block 31 can be realized; the front end of the lifting block 31 is inserted and movably provided with a support rod frame 33, the support rod frame 33 is positioned above the front plate 22, the support rod frame 33 can swing relative to the lifting block 31, and the support rod frame 33 is of a shifting fork-shaped structure; the bracket gasket 34 is arranged on two sides of the upper end of the bracket 33, the bracket gasket 34 is positioned below the press-nailing die 4, the bracket gasket 34 is in contact with the outer arc surface of the large end of the engine connecting rod body 9, and the engine connecting rod body 9 is propped against the press-nailing die 4, so that the clamping and fixing of the engine connecting rod body 9 are realized, meanwhile, the bracket 33 can swing relative to the lifting block 31, and in the process of clamping and fixing the engine connecting rod body 9, the position of the engine connecting rod body 9 can be adjusted through the swing of the bracket 33, so that the engine connecting rod body 9 is clamped and fixed in a vertical state, and convenience is provided for the subsequent pin press-mounting operation.

It should be noted that, the lifting block 31 includes a vertical sliding block 311, an insertion hole 312 is formed at an upper portion of a front end of the vertical sliding block 311, a transmission groove 313 is formed in a middle portion of a front end of the vertical sliding block 311, the transmission groove 313 penetrates through left and right ends of the vertical sliding block 311 and is arranged in a left-right inclined manner, a first stop surface 314 is disposed at a lower portion of one end of the vertical sliding block 311, an upper side of the first stop surface 314 is inclined toward a left-right symmetrical surface of the vertical sliding block 311, and is connected with a high side of a lower groove wall surface of the transmission groove 313. The driving rod 32 comprises a rod body 321, and one end of the rod body 321 penetrates through the shuttle groove 211 and is hinged with the output end of the driving assembly 7 through a shaft; the upper end of the rod body 321 is provided with an inclined upper driving inclined plane 322 at one side far away from the driving assembly 7, the lower end of the rod body 321 is provided with an inclined lower driving inclined plane 324 at one side far away from the driving assembly 7, and the upper driving inclined plane 322 and the lower driving inclined plane 324 are respectively in contact fit with the upper groove wall surface and the lower groove wall surface of the transmission groove 313, so that the driving rod 32 and the lifting block 31 form a transmission structure; a second stop surface 323 is commonly arranged between one side, close to the driving assembly 7, of the lower end of the rod body 321 and the lower driving inclined surface 324, and the second stop surface 323 is matched with the first stop surface 314; when the second stop surface 323 is in contact fit with the first stop surface 314, the engine connecting rod body 9 is just clamped and fixed, and the driving rod 32 cannot push the lifting block 31 to lift any more, so that excessive clamping force on the engine connecting rod body 9 can be avoided, the engine connecting rod body 9 is prevented from being clamped and damaged, and the service life of the supporting rod gasket 34 is prolonged.

It should be noted that, the bracket 33 includes a rotating post 332 inserted and movably mounted in the jack 312, a connecting block 331 is fixedly mounted at the front end of the rotating post 332, and brackets 333 are mounted on the left and right sides of the front end of the connecting block 331, and in the clamping process of the engine link lever body 9, the middle part of the engine link lever body 9 is located between the two brackets 333, so that the clamping alignment of the engine link lever body 9 is facilitated, and the two bracket gaskets 34 are mounted at the upper ends of the two brackets 333 through bolts respectively.

As a further explanation of the above technical scheme, the ejector rod structure 8 includes a mounting seat 81 mounted at the front end lower portion of the front plate 22, a mounting cavity 82 is provided at the lower end of the mounting seat 81, the mounting cavity 82 is an inverted-T-shaped cavity and penetrates through the upper end face of the mounting seat 81, a sealing plate 83 is clamped at the lower end of the mounting seat 81, a spring 84 is provided at the upper end of the sealing plate 83, the spring 84 is located in the mounting cavity 82, and a top column 85 is provided at the upper end of the spring 84, and the top column 85 extends to the upper side of the mounting seat 81 through the mounting cavity 82.

The process of clamping and fixing the connecting rod body 9 of the engine is as follows:

s1, an operator holds the engine connecting rod body 9, presses the small end of the engine connecting rod body 9 on the top column 85, clamps the middle upper part of the engine connecting rod body 9 into the supporting rod frame 33, positions the large end of the engine connecting rod body 9 between the supporting rod gasket 34 and the nail pressing die 4, lifts the engine connecting rod body 9, enables the end face of the large end of the engine connecting rod body 9 to be in contact with the groove top surface of the rod placing groove on the nail pressing die 4, and releases the engine connecting rod body 9;

s2, starting the driving assembly 7, enabling the driving assembly 7 to push the driving rod 32 to slide, enabling the driving rod 32 to push the lifting block 31 to move upwards, enabling the two supporting rod gaskets 34 to be in contact with the outer arc-shaped surface of the large end of the engine connecting rod body 9, clamping and fixing the engine connecting rod body 9, and completing clamping and fixing the engine connecting rod body 9 when the second stop surface 323 is in contact with the first stop surface 314, wherein the driving assembly 7 stops pushing the driving rod 32 and keeps the position of the driving rod 32 unchanged until pin press mounting is completed.

It should be noted that, the utility model is a connecting rod feeding mold, and the operation flow of taking down the connecting rod body 9 of the engine after the pin is pressed is as follows:

s3, the driving assembly 7 starts to pull back the driving rod 32, so that the lifting block 31 moves downwards, the supporting rod gasket 34 is separated from contact with the engine connecting rod body 9, and the driving assembly 7 stops working;

s4, the operator holds the engine link lever 9 and presses down, disengages the engine link lever 9 from the nail die 4, and then tilts out the engine link lever 9.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. Connecting rod material loading mould, including bottom plate (1), its characterized in that: the middle part of the upper end of the bottom plate (1) is provided with a mounting structure (2), the mounting structure (2) is internally and movably provided with a lifting rod structure (3), the rear end of the mounting structure (2) is provided with a connecting plate (5), one end of the connecting plate (5) is provided with a connecting seat (6), and the connecting seat (6) is vertical to the connecting plate (5); the utility model discloses a nail pressing die, including connecting plate (5), connecting seat (6), ejector pin structure (8) are installed to the one end of keeping away from connecting plate (5) on connecting seat (6), the output activity of driving assembly (7) runs through connecting seat (6) and is connected with lifting pole structure (3) transmission, nail pressing die (4) are installed to the upper end of mounting structure (2), the upper end of lifting pole structure (3) extends to the top of mounting structure (2) and is located the below of pressing nail die (4), ejector pin structure (8) are installed to the front end lower part of mounting structure (2), ejector pin structure (8) are located the below of pressing nail die (4).

2. The connecting rod loading die according to claim 1, wherein: the mounting structure (2) comprises two symmetrically arranged side plates (21), and a shuttle groove (211) which is penetrated left and right is arranged on one side plate (21); a front plate (22) and a rear plate (23) are commonly installed between the two side plates (21), and the front plate (22) is positioned at the front side of the rear plate (23) and is connected with the rear plate (23) through bolts; the front end of the rear plate (23) is provided with a first sliding groove (231) and a second sliding groove (232), the first sliding groove (231) is arranged left and right, the second sliding groove (232) is vertically arranged, the first sliding groove (231) and the second sliding groove (232) are distributed in a crisscross manner, and the shuttle groove (211) is communicated with the first sliding groove (231); the nail pressing die (4) is arranged at the upper ends of the two side plates (21), a rod placing groove is formed in the middle of the lower end of the nail pressing die (4), and the connecting plate (5) is arranged at the rear ends of the two side plates (21).

3. The connecting rod loading die according to claim 2, wherein: the lifting rod structure (3) comprises a driving rod (32) and a lifting block (31) which are respectively positioned in a first chute (231) and a second chute (232), the driving rod (32) is movably installed on the lifting block (31) in a penetrating way, an inclined plane transmission structure is formed between the driving rod (32) and the lifting block (31), and one end of the driving rod (32) penetrates through the shuttle groove (211) and is in transmission connection with the output end of the second driving component (7); the front end of the lifting block (31) is inserted and movably provided with a support rod frame (33), the support rod frame (33) is positioned above the front plate (22), and the support rod frame (33) is of a shifting fork-shaped structure; the two sides of the upper end of the support rod frame (33) are provided with support rod gaskets (34), and the support rod gaskets (34) are positioned below the nail pressing die (4).

4. The connecting rod loading die according to claim 2, wherein: ejector rod structure (8) is including installing mount pad (81) in front bezel (22) front end lower part, install chamber (82) have been seted up to the lower extreme of mount pad (81), install chamber (82) are the up end of down T shape chamber and run through mount pad (81), the lower extreme joint of mount pad (81) has shrouding (83), the upper end of shrouding (83) is provided with spring (84), spring (84) are located install chamber (82), and the upper end of spring (84) is provided with spliced pole (85), spliced pole (85) extend to the top of mount pad (81) through install chamber (82).

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