Full-automatic assembling equipment for riveting lining to shell

Abstract

The utility model discloses a full-automatic assembling device for riveting a shell and a bushing, which comprises an assembling table, a turntable, a plurality of positioning clamps, a plurality of connecting rods, a plurality of connecting rods, a plurality of connecting rods and a plurality of connecting rods, and is characterized in that the turntable is rotationally arranged on the assembling table; a shell feeding mechanism, the device comprises a shell vibration disc, a conveying guide rail connected with the shell vibration disc, a pushing assembly arranged at the end, away from the vibration disc, of the conveying guide rail, a feeding guide rail arranged on one side of a rotary disc, and a transferring assembly for transferring a shell on the pushing assembly to the feeding guide rail. The grabbing assembly is arranged on one side of the rotary disc and used for grabbing the shells on the feeding guide rail to the positions, corresponding to the positioning clamps, of the rotary disc. The pushing assembly can receive the shells on the conveying guide rail one by one and push the shells to the transferring assembly. The riveting device comprises a lining feeding mechanism, a riveting mechanism and a discharging mechanism. Through the arrangement of the rotating disc, the shell feeding mechanism, the lining feeding mechanism, the riveting mechanism and the discharging mechanism, the lining can be automatically riveted and assembled on the shell, the production efficiency is high, and the assembling quality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, and more particularly to a fully automatic assembly device for riveting a shell to a bushing. Background Art

[0002] Existing CJ-DT65 housings for automotive electronics are Figure 1 As shown, there are assembly holes a1 on both sides of the housing a. Figure 2 The bushing b is shown to be assembled into the two assembly holes a1. In the prior art, the housing a and the bushing b are mostly assembled manually by workers, which results in low production efficiency and low assembly quality. Summary of the Invention

[0003] The utility model overcomes the deficiencies of the prior art and provides a fully automatic shell riveting bushing assembly device, which has a reasonable structural design and can realize automatic riveting and assembly of the bushing on the shell by arranging a turntable, a shell feeding mechanism, a bushing feeding mechanism, a riveting mechanism and a blanking mechanism, thereby achieving high production efficiency and good assembly quality.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A fully automatic housing riveting bushing assembly device includes an assembly table and:

[0006] A turntable is rotatably mounted on the assembly table and is provided with a plurality of positioning fixtures;

[0007] The shell loading mechanism includes a shell vibrating plate, a conveying guide rail connected to the shell vibrating plate, a pushing assembly provided at an end of the conveying guide rail away from the vibrating plate, a loading guide rail provided on one side of the turntable, a transfer assembly for transferring the shells on the pushing assembly to the loading guide rail, and a grabbing assembly provided on one side of the turntable and used to grab the shells on the loading guide rail to the corresponding positioning fixture on the turntable. The pushing assembly can individually receive the shells on the conveying guide rail and push them to the transfer assembly.

[0008] The bushing feeding mechanism includes a bushing vibrating plate, two conveying guide rails connected to the bushing vibrating plate and arranged in parallel, a material error component arranged at one end of the two conveying guide rails away from the bushing vibrating plate, and a removal component for removing the bushings on the material error component and placing them in two assembly holes on the housing. The material error component can push the two bushings respectively located on the two conveying guide rails to the position corresponding to the removal component relative to the conveying guide rails;

[0009] a riveting mechanism, which is provided on one side of the turntable and is used to rivet the bushing to the housing;

[0010] The unloading mechanism includes an unloading guide rail, a transfer component for transferring the assembled shell from the turntable to the unloading guide rail, a conveyor belt connected to the unloading guide rail, and a shifting component for shifting the shells on the unloading guide rail individually to the conveyor belt.

[0011] Preferably, the pushing assembly includes a pushing platform, a pushing plate slidably arranged on the pushing platform, a pushing cylinder arranged on the pushing platform and connected to the pushing plate, a fixed block installed on the pushing plate, and a movable block installed on the pushing plate and moving close to or away from the fixed block, and an accommodating space for accommodating the outer shell is formed between the fixed block and the movable block.

[0012] Preferably, the transfer assembly includes a transfer rod that can be raised and lowered and translated. The transfer rod can be inserted into the center hole of the shell and transfer the shell to the loading guide rail. A blanking trough is provided on one side of the loading guide rail. The transfer rod can transfer the shell in the accommodating space to the blanking trough.

[0013] Preferably, a material receiving platform is provided at the end of the loading guide rail near the turntable, a material receiving cylinder is provided below the material receiving platform, the material receiving cylinder is connected to a material receiving seat, the material receiving seat can be raised and lowered on the material receiving platform, and the grabbing assembly includes a grabbing claw that can be moved horizontally and raised and lowered, and the grabbing claw grabs the outer shell on the material receiving seat to the positioning fixture corresponding to the turntable.

[0014] Preferably, the material offset assembly includes an offset frame, an offset cylinder arranged on the offset frame, and an offset block arranged on the offset frame and connected to the offset cylinder. The offset block is provided with two positioning holes for accommodating bushings, and the two positioning holes are offset or docked with the two conveying guide rails.

[0015] Preferably, the removal assembly includes two transfer units that can be moved horizontally and lifted, each transfer unit includes a transfer block, a transfer rod passed through the transfer block, a transfer cylinder connected to the transfer rod, and a limit block provided on the transfer block and located above the lower end of the transfer rod, and the transfer rod can be inserted into the bushing.

[0016] Preferably, the riveting mechanism includes a riveting frame, a riveting seat slidably and liftably arranged on the riveting frame, a riveting cylinder arranged on the riveting frame and connected to the riveting seat, and two riveting columns arranged on the riveting seat.

[0017] Preferably, the transfer assembly includes two transfer jaws that can be moved horizontally and lifted, and a turntable is provided between the turntable and the unloading guide rail. One of the two transfer jaws clamps the outer shell on the turntable to the turntable, and the other transfer jaw clamps the outer shell on the turntable to the unloading guide rail.

[0018] Preferably, a feeding table is provided on the assembly table, and a feeding fork is slidably provided on the feeding table. The feeding fork can be pushed together with the outer shell on the unloading guide rail. A mounting plate is provided on one side of the unloading guide rail, and a baffle plate that can move toward the unloading guide rail is provided on the mounting plate.

[0019] Preferably, the material-discharging assembly includes a material-discharging claw that can move horizontally and vertically, the material-discharging guide rail is arranged higher than the conveyor belt, and an inclined guide groove is provided at the connection between the conveyor belt and the material-discharging guide rail.

[0020] Beneficial effects of the utility model:

[0021] The utility model has a reasonable structural design. By arranging a turntable, a shell feeding mechanism, a bushing feeding mechanism, a riveting mechanism and a blanking mechanism, the bushing can be automatically riveted and assembled on the shell, with high production efficiency and good assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a housing according to a specific embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of a bushing in a specific embodiment of the utility model;

[0024] Figure 3 It is a structural diagram of a specific embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the turntable according to a specific embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the shell feeding mechanism of the specific embodiment of the utility model Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the structure of the shell feeding mechanism of the specific embodiment of the utility model Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the structure of the pusher assembly according to a specific embodiment of the present utility model;

[0029] Figure 8 This is a structural diagram of a bushing feeding mechanism according to a specific embodiment of the present utility model;

[0030] Figure 9 This is a schematic diagram of the structure of the mismatching component according to a specific embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the removal component according to a specific embodiment of the present utility model;

[0032] Figure 11 This is a structural diagram of a riveting mechanism according to a specific embodiment of the present invention;

[0033] Figure 12 This is a structural diagram of a blanking mechanism according to a specific embodiment of the present utility model;

[0034] Figure 13 This is a structural diagram of a feeding platform according to a specific embodiment of the present invention;

[0035] Figure 14 It is a structural schematic diagram reflecting the material shifting assembly of a specific embodiment of the present utility model.

[0036] In the figure: a, housing; a1, assembly hole; a2, center hole; b, bushing; 100, assembly table; 101, turntable; 102, positioning fixture; 1, housing feeding mechanism; 11, housing vibration disk; 12, conveying guide rail; 13, pushing assembly; 131, pushing platform; 132, pushing plate; 133, pushing cylinder; 134, fixed block; 135, movable block; 136, accommodating space; 14, feeding guide rail; 15, transfer assembly; 151, transfer rod; 16, grabbing assembly; 161, grabbing claw; 2, bushing feeding mechanism; 21, bushing vibration disk; 22, conveying guide rail; 23, misalignment assembly; 231, misalignment rack; 232, misalignment cylinder; 233. Dislocation block; 234. Positioning hole; 24. Removal assembly; 241. Removal unit; 242. Removal block; 243. Removal rod; 244. Removal cylinder; 245. Limit block; 3. Riveting mechanism; 31. Riveting frame; 32. Riveting seat; 33. Riveting cylinder; 34. Riveting column; 4. Unloading mechanism; 41. Unloading guide rail; 411. Mounting plate; 412. Baffle plate; 42. Transfer assembly; 421. Transfer clamp; 43. Conveyor belt; 44. Material shifting assembly; 441. Material shifting claw; 5. Material chute; 6. Material receiving platform; 61. Material receiving cylinder; 62. Material receiving seat; 7. Transfer platform; 8. Feeding platform; 81. Feeding fork; 9. Inclined guide groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] like Figure 1-14As shown, a fully automatic shell riveting bushing assembly equipment includes an assembly table 100, and also includes: a turntable 101, which is rotatably set on the assembly table 100 and has a plurality of positioning fixtures 102 on it; a shell feeding mechanism 1, which includes a shell vibration disk 11, a conveying guide rail 12 connected to the shell vibration disk 11, a pushing assembly 13 provided at one end of the conveying guide rail 12 away from the vibration disk, a feeding guide rail 14 provided on one side of the turntable 101, a transferring assembly 15 for transferring the shell a on the pushing assembly 13 to the feeding guide rail 14, and a grabbing assembly 16 provided on one side of the turntable 101 and used to grab the shell a on the feeding guide rail 14 to the corresponding positioning fixture 102 on the turntable 101. The pushing assembly 13 can transfer the shell a on the feeding guide rail 14 to the corresponding positioning fixture 102 on the turntable 101. The shell a on the guide rail 12 is received and pushed to the transfer assembly 15 individually; the bushing feeding mechanism 2, which includes a bushing vibration disk 21, two conveying guide rails 22 connected to the bushing vibration disk 21 and arranged in parallel, a misalignment assembly 23 arranged at one end of the two conveying guide rails 22 away from the bushing vibration disk 21, and a removal assembly 24 for removing the bushing b on the misalignment assembly 23 and placing it in the two assembly holes a1 on the shell a. The misalignment assembly 23 can push the two bushings b respectively located on the two conveying guide rails 22 to the position corresponding to the removal assembly 24 relative to the conveying guide rails 22; a riveting mechanism 3, which is arranged on one side of the turntable 101 and is used to rivet the bushing b to the shell a; a blanking mechanism 4, which includes a blanking guide Rail 41, a transfer assembly 42 for transferring the assembled shell a from the turntable 101 to the unloading guide rail 41, a conveyor belt 43 connected to the unloading guide rail 41, and a material shifting assembly 44 for shifting the shell a on the unloading guide rail 41 individually to the conveyor belt 43; the pushing assembly 13 includes a pushing platform 131, a pushing plate 132 slidably arranged on the pushing platform 131, a pushing cylinder 133 arranged on the pushing platform 131 and connected to the pushing plate 132, a fixed block 134 installed on the pushing plate 132, a movable block 135 installed on the pushing plate 132 and moving close to or away from the fixed block 134, and an accommodating space 136 for accommodating the shell a is formed between the fixed block 134 and the movable block 135; the transfer assembly 1 5 includes a transfer rod 151 that can be lifted and translated. The transfer rod 151 can be inserted into the central hole a2 of the shell a and transfer the shell a to the loading guide rail 14. A blanking trough 5 is provided on one side of the loading guide rail 14. The transfer rod 151 can transfer the shell a in the accommodating space 136 to the blanking trough 5; a receiving platform 6 is provided at the end of the loading guide rail 14 close to the turntable 101, and a receiving cylinder 61 is provided below the receiving platform 6. The receiving cylinder 61 is connected to a receiving seat 62, and the receiving seat 62 is liftably provided on the receiving platform 6. The grabbing assembly 16 includes a grabbing claw 161 that can be lifted and translated. The grabbing claw 161 grabs the shell a on the receiving seat 62 and places it on the positioning fixture 102 corresponding to the turntable 101;The material dislocation assembly 23 includes a dislocation frame 231, a dislocation cylinder 232 provided on the dislocation frame 231, and a dislocation block 233 provided on the dislocation frame 231 and connected to the dislocation cylinder 232. The dislocation block 233 is provided with two positioning holes 234 for accommodating the bushing b. The two positioning holes 234 are dislocated or docked with the two conveying guide rails 22. The removal assembly 24 includes two transfer units 241 that can be moved horizontally and lifted. Each transfer unit 241 includes a The present invention comprises a removal block 242, a removal rod 243 passing through the removal block 242, a removal cylinder 244 connected to the removal rod 243, a limit block 245 provided on the removal block 242 and located above the lower end of the removal rod 243, and the removal rod 243 can be inserted into the bushing b; the riveting mechanism 3 comprises a riveting frame 31, a riveting seat 32 slidingly raised and lowered on the riveting frame 31, a riveting cylinder 33 provided on the riveting frame 31 and connected to the riveting seat 32, The two riveting posts 34 are arranged on the riveting seat 32; the transfer assembly 42 includes two transfer clamps 421 that can be translated and lifted, and a transfer table 7 is provided between the turntable 101 and the unloading guide rail 41. One of the two transfer clamps 421 clamps the shell a on the turntable 101 to the transfer table 7, and the other transfer clamp 421 clamps the shell a on the transfer table 7 to the unloading guide rail 41; a feeding table 8 is provided on the assembly table 100, and the feeding table 8 is provided. A feeding fork 81 is slidably mounted on the feed platform 8 and can be pushed against the housing a on the feed rail 41. A mounting plate 411 is provided on one side of the feed rail 41, and a material retaining plate 412 is mounted on the mounting plate 411, which can move toward the feed rail 41. The material dispensing assembly 44 includes a dispensing claw 441 that can move horizontally and vertically. The feed rail 41 is positioned above the conveyor belt 43, and an inclined guide slot 9 is provided at the junction of the conveyor belt 43 and the feed rail 41.

[0039] By adopting the above technical solution, in the present invention, first, the shell a is transported from the shell vibrating plate 11 to the push assembly 13 via the conveying guide rail 12. Specifically, a single shell a will enter the accommodating space 136, and then the fixed block 134 will be moved toward the movable block 135 to realize the positioning of the shell a in the accommodating space 136. At the same time, the push cylinder 133 will push the stripping plate toward the transfer assembly 15 and push the shell a to the transfer rod 151. Then, the transfer rod 151 moves to be inserted into the center hole a2 of the shell a and transfers the shell a to the loading guide rail 14. If the transfer rod 151 cannot be smoothly inserted into the center hole a2 at this time, it reflects that the shell a is in an incorrect posture position, and the shell a is transferred to the blanking chute 5 by the transfer rod 151. Then, as the shell a is transferred to the end of the loading guide rail 14, the shell a will enter the receiving platform 6, specifically, the receiving seat 62. When the grabbing claw 161 grabs the shell a, the receiving cylinder 61 moves the receiving seat 62 upward, making it easier for the grabbing claw 161 to grab the shell a. The grabbing claw 161 then moves the shell a to the positioning fixture 102 of the turntable 101. Except for the unloading operation, the shell a will remain on the positioning fixture 102.

[0040] Then, as the turntable 101 rotates, the positioning fixture 102 rotates to the bushing feeding mechanism 2. In the bushing feeding mechanism 2, the bushing vibrating plate 21 first transmits the bushing b through the two conveying guide rails 22, and the bushings b on the two conveying guide rails 22 are individually displaced by the dislocation assembly. Specifically, when the two positioning holes 234 of the dislocation block 233 are opposite to the two conveying guide rails 22, when the two bushings b are respectively placed in the two positioning holes 234, the dislocation cylinder 232 drives the dislocation block 233 to move, thereby achieving the dislocation of the two bushings b. After the misalignment, it will move to the position of the corresponding removal unit 241, and then be inserted into the two bushings b respectively through two moving rods, and the two bushings b will be moved to the assembly hole a1 of the shell a, and then the removal cylinder 244 will drive the removal rod 243 to move up, and the removal rod 243 will move up with the bushing b. During the movement, when the bushing b touches the limit block 245, the bushing b will fall into the assembly hole a1, thus completing the removal and blanking of the bushing b.

[0041] Then, the bushing b is riveted by the riveting mechanism 3. Specifically, the riveting cylinder 33 drives the riveting column 34 downward, and the riveting column 34 rivets the bushing b to the housing a, thereby achieving the riveting of the two bushings b.

[0042] Finally, the shell a that has been riveted and assembled is unloaded. In the unloading mechanism 4, the shell a is first grabbed and moved by two transfer claws 421. One of the transfer claws 421 transfers the shell a on the turntable 101 to the transfer table 7, and the other transfer claw 421 transfers the shell a on the transfer table 7 to the unloading guide rail 41. Then, the feed fork 81 is driven to move and push the shell a on the unloading guide rail 41. At the same time, the baffle plate 412 can be moved to the top of the shell a to limit and block the shell a. The placement of the feed fork 81 causes the posture of the shell a to change when pushing the shell a. Then, when the shell a moves to the position of the unloading guide rail 41 close to the conveyor belt 43, the shell a is individually shifted by the shifting claw 441, so that the shell a passes through the inclined guide groove 9 and is moved to the conveyor belt 43. In this way, the unloading operation of the shell a is completed.

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic housing riveting bushing assembly device, comprising an assembly table (100), characterized in that: Also includes: A turntable (101) is rotatably mounted on the assembly platform (100) and is provided with a plurality of positioning fixtures (102); A shell loading mechanism (1) comprises a shell vibrating disk (11), a conveying guide rail (12) connected to the shell vibrating disk (11), a pushing assembly (13) arranged at one end of the conveying guide rail (12) away from the vibrating disk, a loading guide rail (14) arranged at one side of a turntable (101), a transfer assembly (15) for transferring a shell (a) on the pushing assembly (13) to the loading guide rail (14), and a grabbing assembly (16) arranged at one side of the turntable (101) and used for grabbing the shell (a) on the loading guide rail (14) to a corresponding positioning fixture (102) on the turntable (101), wherein the pushing assembly (13) can individually receive and push the shells (a) on the conveying guide rail (12) to the transfer assembly (15); A bushing feeding mechanism (2) comprises a bushing vibrating disk (21), two conveying guide rails (22) connected to and arranged in parallel with the bushing vibrating disk (21), a material shifting assembly (23) arranged at one end of the two conveying guide rails (22) away from the bushing vibrating disk (21), and a removal assembly (24) for removing a bushing (b) on the material shifting assembly (23) and placing it in two assembly holes (a1) on the housing (a); the material shifting assembly (23) can push the two bushings (b) respectively located on the two conveying guide rails (22) to a position corresponding to the removal assembly (24) in a displaced manner relative to the conveying guide rails (22); A riveting mechanism (3) is provided on one side of the turntable (101) and is used for riveting the bushing (b) to the housing (a); The unloading mechanism (4) comprises an unloading guide rail (41), a transfer assembly (42) for transferring the assembled housing (a) from the turntable (101) to the unloading guide rail (41), a conveyor belt (43) connected to the unloading guide rail (41), and a shifting assembly (44) for shifting the housings (a) on the unloading guide rail (41) individually to the conveyor belt (43).

2. The fully automatic housing riveting bushing assembly equipment according to claim 1 is characterized in that: The pushing assembly (13) comprises a pushing platform (131), a pushing plate (132) slidably arranged on the pushing platform (131), a pushing cylinder (133) arranged on the pushing platform (131) and connected to the pushing plate (132), a fixed block (134) installed on the pushing plate (132), and a movable block (135) installed on the pushing plate (132) and moving toward or away from the fixed block (134). An accommodating space (136) for accommodating the housing (a) is formed between the fixed block (134) and the movable block (135).

3. The fully automatic housing riveting bushing assembly equipment according to claim 2, characterized in that: The transfer assembly (15) includes a transfer rod (151) that can be raised and lowered and moved horizontally. The transfer rod (151) can be inserted into the center hole (a2) of the shell (a) and transfer the shell (a) to the loading guide rail (14). A blanking trough (5) is provided on one side of the loading guide rail (14). The transfer rod (151) can transfer the shell (a) in the accommodating space (136) to the blanking trough (5).

4. A fully automatic housing riveting bushing assembly device according to claim 1, 2 or 3, characterized in that: A material receiving platform (6) is provided at the end of the feeding guide rail (14) close to the turntable (101), a material receiving cylinder (61) is provided below the material receiving platform (6), the material receiving cylinder (61) is connected to a material receiving seat (62), and the material receiving seat (62) is movably arranged on the material receiving platform (6), and a grabbing assembly (16) includes a grabbing clamp (161) that can be moved horizontally and lifted, and the grabbing clamp (161) grabs the shell (a) on the material receiving seat (62) to the positioning fixture (102) corresponding to the turntable (101).

5. The fully automatic housing riveting bushing assembly equipment according to claim 4, characterized in that: The material dislocation assembly (23) comprises a dislocation frame (231), a dislocation cylinder (232) arranged on the dislocation frame (231), and a dislocation block (233) arranged on the dislocation frame (231) and connected to the dislocation cylinder (232). The dislocation block (233) is provided with two positioning holes (234) for accommodating bushings (b). The two positioning holes (234) are dislocated or docked with the two conveying guide rails (22).

6. The fully automatic housing riveting bushing assembly equipment according to claim 5, characterized in that: The removal assembly (24) includes two removal units (241) that can be moved horizontally and lifted. Each removal unit (241) includes a removal block (242), a removal rod (243) inserted into the removal block (242), a removal cylinder (244) connected to the removal rod (243), and a limit block (245) provided on the removal block (242) and located above the lower end of the removal rod (243). The removal rod (243) can be inserted into the bushing (b).

7. The fully automatic housing riveting bushing assembly equipment according to claim 6, characterized in that: The riveting mechanism (3) comprises a riveting frame (31), a riveting seat (32) slidably and liftably arranged on the riveting frame (31), a riveting cylinder (33) arranged on the riveting frame (31) and connected to the riveting seat (32), and two riveting columns (34) arranged on the riveting seat (32).

8. The fully automatic housing riveting bushing assembly equipment according to claim 7, characterized in that: The transfer assembly (42) includes two transfer clamps (421) that can be translated and lifted. A transfer table (7) is provided between the turntable (101) and the unloading guide rail (41). One of the two transfer clamps (421) clamps the outer shell (a) on the turntable (101) to the transfer table (7), and the other transfer clamp (421) clamps the outer shell (a) on the transfer table (7) to the unloading guide rail (41).

9. The fully automatic housing riveting bushing assembly equipment according to claim 8, characterized in that: A feeding platform (8) is provided on the assembly platform (100), a feeding fork (81) is slidably provided on the feeding platform (8), the feeding fork (81) can push the housing (a) on the feeding guide rail (41), a mounting plate (411) is provided on one side of the feeding guide rail (41), and a blocking plate (412) is provided on the mounting plate (411) that can move toward the feeding guide rail (41).

10. The fully automatic housing riveting bushing assembly equipment according to claim 9, characterized in that: The material shifting assembly (44) includes a material shifting claw (441) that can move horizontally and vertically. The material discharge guide rail (41) is arranged higher than the conveyor belt (43). An inclined guide groove (9) is provided at the connection between the conveyor belt (43) and the material discharge guide rail (41).

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