CN215941314U

CN215941314U - Automatic blanking device for stamping sheet metal parts

Info

Publication number: CN215941314U
Application number: CN202121701164.9U
Authority: CN
Inventors: 贾军伟
Original assignee: Dalian Jiashijia Technology Development Co ltd
Current assignee: Dalian Jiashijia Technology Development Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-03-04
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to the technical field of automatic blanking devices, in particular to an automatic blanking device for stamping sheet metal parts, which avoids manual taking out of sheet metal parts from a die cavity of a stamping die, saves time and labor and improves the production efficiency of the sheet metal parts; the on-line screen storage device comprises a base, the motor cabinet, including a motor, an end cap, a controller, and a cover plate, first bevel gear, two sets of second bevel gears, two sets of screw shafts, two sets of right angle fixed blocks, two sets of belt pulleys, the belt, the lifter plate, the punching press head, two sets of third bevel gears, two sets of screwed pipes, the multiunit fixed block, two sets of screws, two sets of hollow connecting blocks, two sets of fixed subassemblies and two sets of stamping die, the middle part of base is provided with the blanking mouth, the motor passes through the motor cabinet to be fixed on base top right side, the output and the first bevel gear of motor are connected, and first bevel gear is connected with a set of second bevel gear meshing transmission, the bottom at two sets of screw shafts is fixed respectively to two sets of second bevel gears, two sets of screw shafts rotate with two sets of right angle fixed blocks respectively and are connected.

Description

Automatic blanking device for stamping sheet metal parts

Technical Field

The utility model relates to the technical field of automatic blanking devices, in particular to an automatic blanking device for stamping sheet metal parts.

Background

An automatic blanking device for stamping sheet metal parts is an auxiliary device for automatically blanking sheet metal parts, and is widely used in the field of automatic blanking devices; the existing sheet metal part is generally taken out of a die cavity of a die manually after the stamping of the sheet metal part is finished, so that time and labor are wasted, and the production efficiency of the sheet metal part is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the automatic blanking device for stamping the sheet metal parts, which avoids manually taking the sheet metal parts out of the die cavity of the stamping die, saves time and labor and improves the production efficiency of the automatic blanking device.

The utility model relates to an automatic blanking device for stamping sheet metal parts, which comprises a base, a motor, a first bevel gear, two groups of second bevel gears, two groups of screw shafts, two groups of right-angle fixing blocks, two groups of belt pulleys, a belt, a lifting plate, a stamping head, two groups of third bevel gears, two groups of screw pipes, a plurality of groups of fixing blocks, two groups of screw rods, two groups of hollow connecting blocks, two groups of fixing components and two groups of stamping dies, wherein a blanking port is arranged in the middle of the base, the motor is fixed on the right side of the top end of the base through the motor base, the output end of the motor is connected with the first bevel gear, the first bevel gear is in meshing transmission connection with the second bevel gears, the two groups of second bevel gears are respectively fixed at the bottom ends of the two groups of screw shafts, the two groups of screw shafts are respectively in rotation connection with the two groups of right-angle fixing blocks, the two groups of right-angle fixing blocks are respectively fixed on the left side and the right side of the top end of the base, and the two groups of belt pulleys are respectively fixed at the top ends of the two groups of screw shafts, the two groups of belt pulleys are in transmission connection through a belt, the lifting plate is in threaded connection with the two groups of screw shafts, the stamping head is fixed in the middle of the bottom end of the lifting plate, and is positioned above the blanking port of the base, the two groups of third bevel gears are respectively in meshed transmission connection with the two groups of second bevel gears, and two groups of third bevel gears are respectively fixed at the outer side ends of the two groups of screw pipes, the two groups of screw pipes are respectively connected with a plurality of groups of fixed blocks in a rotating way, the plurality of groups of fixed blocks are respectively and uniformly fixed at the left side and the right side of the top end of the base, the screw rods are connected with the screw pipes in a screw way, the other end of the screw rod is connected with the hollow connecting blocks, the two groups of hollow connecting blocks are respectively clamped with the left side and the right side of the top end of the base in a sliding way, and two sets of hollow connecting blocks are connected with two sets of stamping die respectively through fixed subassembly, and stamping die's bottom and the top contact of base to but two sets of stamping die's top in close contact with stamping die is provided with the die cavity.

The utility model discloses an automatic blanking device for stamping sheet metal parts, which comprises a fixing component, a connecting plate, an inserting rod, a first handle, a connecting block and a positioning bolt, wherein the connecting plate is in contact with the top end of a hollow connecting block, the inserting rod is fixed at the bottom end of the connecting plate and is inserted into the hollow connecting block, the first handle is fixed at the top end of the connecting plate, an opening is formed in the inner side end of the hollow connecting block, the connecting block is inserted into the hollow connecting block and is fixed at the outer side end of a stamping die, the hollow connecting block is in tight contact with the stamping die and is provided with a socket, the inserting rod penetrates through the socket of the connecting block, a positioning hole is formed in the bottom of the inserting rod, the positioning bolt is inserted into the positioning hole of the inserting rod, and the positioning bolt is in threaded connection with the bottom of the outer side end of the hollow connecting block.

The utility model discloses an automatic blanking device for stamping sheet metal parts, which further comprises a supporting plate, a fixed supporting assembly, a collecting box, a plurality of groups of shrinkage rods, a plurality of groups of springs, a movable plate, a rubber pad and two groups of second handles, wherein the supporting plate is connected with the bottom end of a base through the fixed supporting assembly, a plurality of thick slots are formed in the top end of the supporting plate, a plurality of groups of insertion blocks are arranged at the bottom end of the collecting box, the collecting box is placed on the supporting plate and is positioned below a blanking port of the base, an opening is formed in the top end of the collecting box, the shrinkage rods are uniformly fixed on the inner side wall of the bottom end of the collecting box, the springs are fixedly sleeved on the shrinkage rods, the top ends of the shrinkage rods are connected with the movable plate, the movable plate is slidably connected with the inner side walls of the left end and the right end of the collecting box, the rubber pad is fixed on the movable plate, and the two groups of second handles are symmetrically fixed at the left end and the right end of the collecting box respectively.

The utility model discloses an automatic blanking device for stamping sheet metal parts.

The automatic blanking device for stamping the sheet metal part further comprises a shock insulation pad, and the shock insulation pad is fixed between the motor base and the motor.

The utility model relates to an automatic blanking device for stamping sheet metal parts.

According to the automatic blanking device for stamping sheet metal parts, lubricating oil is coated between the second bevel gear and the third bevel gear.

Compared with the prior art, the utility model has the beneficial effects that: the sheet material is placed in the die cavities of the two groups of stamping dies, the first bevel gear is driven to rotate by a motor and is in meshed transmission connection with the second bevel gear, so that the screw shaft drives the belt pulleys to rotate, the two groups of belt pulleys are in transmission connection through a belt, the two groups of screw shafts drive the two groups of second bevel gears to rotate respectively and simultaneously, the second bevel gears are in meshed transmission connection with the third bevel gear, so that the two groups of screw pipes rotate synchronously, the screw rod drives the two groups of stamping dies to move oppositely under the matching use of the hollow connecting blocks, the sheet material is clamped and fixed in the die cavities of the two groups of stamping dies, the lifting plate drives the stamping head to move downwards at the moment to stamp the sheet material, after the stamping is finished, the motor is in reverse transmission, the lifting plate drives the stamping head to move upwards, the two groups of stamping dies move backwards, and the sheet metal part formed by stamping falls down from the blanking port of the base at the moment, the sheet metal part is prevented from being taken out of the die cavity of the stamping die manually, time and labor are saved, and the production efficiency of the sheet metal part is improved.

Drawings

FIG. 1 is a schematic front view and partial cross-sectional structural view of the present invention;

FIG. 2 is an enlarged schematic view of the utility model at A;

FIG. 3 is an enlarged schematic view of the utility model at B;

FIG. 4 is an enlarged schematic view of the utility model at C;

in the drawings, the reference numbers: 1. a base; 2. a motor base; 3. a motor; 4. a first bevel gear; 5. a second bevel gear; 6. a screw shaft; 7. a right-angle fixing block; 8. a belt pulley; 9. a belt; 10. a lifting plate; 11. punching a head; 12. a third bevel gear; 13. a solenoid; 14. a fixed block; 15. a screw; 16. a hollow connecting block; 17. a stamping die; 18. a connecting plate; 19. inserting a rod; 20. a first handle; 21. connecting blocks; 22. positioning the bolt; 23. a support plate; 24. a collection box; 25. a retracting lever; 26. a spring; 27. moving the plate; 28. a rubber pad; 29. a second handle; 30. supporting legs; 31. cushion blocks; 32. anchor bolts; 33. provided is a shock insulation pad.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in figures 1 to 4, the automatic blanking device for stamping sheet metal parts comprises a base 1, a motor base 2, a motor 3, a first bevel gear 4, two sets of second bevel gears 5, two sets of screw shafts 6, two sets of right-angle fixing blocks 7, two sets of belt pulleys 8, a belt 9, a lifting plate 10, a stamping head 11, two sets of third bevel gears 12, two sets of screw pipes 13, a plurality of sets of fixing blocks 14, two sets of screw rods 15, two sets of hollow connecting blocks 16, two sets of fixing components and two sets of stamping dies 17, wherein a blanking port is arranged in the middle of the base 1, the motor 3 is fixed on the right side of the top end of the base 1 through the motor base 2, the output end of the motor 3 is connected with the first bevel gear 4, the first bevel gear 4 is in meshing transmission connection with the second bevel gears 5, the two sets of second bevel gears 5 are respectively fixed at the bottom ends of the two sets of screw shafts 6, the two sets of screw shafts 6 are respectively in rotation connection with the two sets of right-angle fixing blocks 7, two groups of right-angle fixed blocks 7 are respectively fixed on the left side and the right side of the top end of the base 1, two groups of belt pulleys 8 are respectively fixed on the top ends of two groups of screw shafts 6, the two groups of belt pulleys 8 are in transmission connection through a belt 9, a lifting plate 10 is in screwed connection with the two groups of screw shafts 6, a punching head 11 is fixed in the middle of the bottom end of the lifting plate 10 and is positioned above a blanking port of the base 1, two groups of third bevel gears 12 are respectively in meshed transmission connection with two groups of second bevel gears 5, the two groups of third bevel gears 12 are respectively fixed on the outer side ends of two groups of screw pipes 13, the two groups of screw pipes 13 are respectively in rotary connection with a plurality of groups of fixed blocks 14, the plurality of groups of fixed blocks 14 are respectively and uniformly fixed on the left side and the right side of the top end of the base 1, a screw 15 is in screwed connection with the screw pipes 13, the other end of the screw 15 is connected with a hollow connecting block 16, the two groups of hollow connecting blocks 16 are respectively in sliding clamping connection with the left side and the right side of the top end of the base 1, the two groups of hollow connecting blocks 16 are respectively connected with the two groups of stamping dies 17 through fixing components, the bottom ends of the stamping dies 17 are in contact with the top end of the base 1, and the two groups of stamping dies 17 can be in close contact with the top ends of the stamping dies 17 to form die cavities; the plate is placed in the die cavities of two groups of stamping dies 17, the motor 3 drives the first bevel gear 4 to rotate, the first bevel gear 4 is in meshing transmission connection with the second bevel gear 5, the screw shaft 6 drives the belt pulleys 8 to rotate, the two groups of belt pulleys 8 are in transmission connection through the belt 9, so that the two groups of screw shafts 6 simultaneously drive the two groups of second bevel gears 5 to rotate respectively, the second bevel gears 5 are in meshing transmission connection with the third bevel gear 12, the two groups of screw pipes 13 synchronously rotate, the screw rods 15 are matched with the hollow connecting blocks 16 to drive the two groups of stamping dies 17 to move oppositely, the plate is clamped and fixed in the die cavities of the two groups of stamping dies 17, the lifting plate 10 drives the stamping heads 11 to move downwards to stamp the plate, the motor 3 is in reverse transmission after stamping is finished, and the lifting plate 10 drives the stamping heads 11 to move upwards, two sets of stamping die 17 move to the back, and the sheet metal component that the punching press formed this moment falls down from base 1's blanking mouth, has avoided taking out the sheet metal component from stamping die 17's die cavity through artifical manual, and labour saving and time saving has improved the production efficiency of sheet metal component.

The utility model relates to an automatic blanking device for stamping sheet metal parts, which comprises a fixing component, a connecting plate 18, an inserted link 19, a first handle 20, a connecting block 21 and a positioning bolt 22, wherein the connecting plate 18 is contacted with the top end of a hollow connecting block 16, the inserted link 19 is fixed at the bottom end of the connecting plate 18, and inserted into the hollow connecting block 16, a first handle 20 is fixed to the top end of the connecting plate 18, and the inner end of the hollow connecting block 16 is provided with an opening, the connecting block 21 is inserted into the hollow connecting block 16, and is fixed at the outer end of a stamping die 17, the hollow connecting block 16 is tightly contacted with the stamping die 17, a socket is arranged on the connecting block 21, the insertion rod 19 penetrates through the socket of the connecting block 21, a positioning hole is arranged at the bottom of the insertion rod 19, a positioning bolt 22 is inserted into the positioning hole of the insertion rod 19, and the positioning bolt 22 is in threaded connection with the bottom of the outer side end of the hollow connecting block 16; through twisting positioning bolt 22 for positioning bolt 22 is at the downthehole quick plug of the locating hole of inserted bar 19, thereby makes inserted bar 19 use under the cooperation of connecting plate 18 and the first in command 20, and quick plug in the socket of connecting block 21, and then makes stamping die 17 and hollow connecting block 16 be convenient for quick split, is convenient for change stamping die 17 at any time according to the production demand, improves the use convenience of device.

The utility model relates to an automatic blanking device for stamping sheet metal parts, which further comprises a supporting plate 23, a fixed supporting component, a collecting box 24, a plurality of groups of contraction rods 25, a plurality of groups of springs 26, a moving plate 27, a rubber pad 28 and two groups of second handles 29, wherein the supporting plate 23 is connected with the bottom end of a base 1 through the fixed supporting component, a plurality of thick slots are arranged at the top end of the supporting plate 23, a plurality of groups of inserting blocks are arranged at the bottom end of the collecting box 24, and the collecting box 24 is placed on the supporting plate 23 and is positioned below the blanking port of the base 1, the top end of the collecting box 24 is provided with an opening, and a plurality of groups of contraction rods 25 are uniformly fixed on the inner side wall of the bottom end of the collection box 24, a spring 26 is fixedly sleeved on the contraction rods 25, the top end of the telescopic rod 25 is connected with a movable plate 27, the movable plate 27 is in sliding connection with the inner side walls of the left end and the right end of the collecting box 24, a rubber pad 28 is fixed on the movable plate 27, and two groups of second handles 29 are symmetrically fixed at the left end and the right end of the collecting box 24 respectively; through setting up layer board 23, collecting box 24, shrink pole 25, spring 26, movable plate 27, rubber pad 28 and second handle 29, be convenient for carry out the buffering formula to the sheet metal component that falls from base 1 and collect, appear colliding with the damage when avoiding the sheet metal component to fall, improve the result of use of device.

The utility model relates to an automatic blanking device for stamping sheet metal parts, which comprises a fixed support assembly, a plurality of groups of support legs 30, a plurality of groups of cushion blocks 31 and a plurality of groups of foundation bolts 32, wherein the plurality of groups of support legs 30 are uniformly fixed at the bottom end of a base 1, supporting plates 23 are fixed among the plurality of groups of support legs 30, the cushion blocks 31 are fixed at the bottom ends of the support legs 30, and the cushion blocks 31 are connected with the ground through the foundation bolts 32; through setting up supporting leg 30, cushion 31 and rag bolt 32, take place skew or slope when avoiding the device to use, improve the stability in use of device.

The automatic blanking device for stamping the sheet metal part further comprises a shock insulation pad 33, wherein the shock insulation pad 33 is fixed between the motor base 2 and the motor 3; through setting up isolation pad 33, reduce vibrations and to the influence of motor 3, ensure motor 3's steady operation.

The utility model relates to an automatic blanking device for stamping sheet metal parts, wherein a motor 3 is a noise reduction motor; through setting up the amortization motor, noise pollution is reduced avoids causing the hearing damage to the operator, improves the use reliability of device.

According to the automatic blanking device for stamping sheet metal parts, lubricating oil is coated between the second bevel gear 5 and the third bevel gear 12; by applying lubricating oil, the friction loss between the second bevel gear 5 and the third bevel gear 12 is reduced, and the service life of the device is prolonged.

The utility model relates to an automatic blanking device for stamping sheet metal parts, which is characterized in that when in work, a sheet material is firstly placed in die cavities of two groups of stamping dies 17, a motor 3 drives a first bevel gear 4 to rotate, the first bevel gear 4 is in meshing transmission connection with a second bevel gear 5, a screw shaft 6 drives belt pulleys 8 to rotate, the two groups of belt pulleys 8 are in transmission connection through a belt 9, so that the two groups of screw shafts 6 respectively drive the two groups of second bevel gears 5 to rotate simultaneously, the second bevel gear 5 is in meshing transmission connection with a third bevel gear 12, and further two groups of screw pipes 13 synchronously rotate, so that a screw 15 drives the two groups of stamping dies 17 to move oppositely under the matching use of a hollow connecting block 16, the sheet material is clamped and fixed in the die cavities of the two groups of stamping dies 17, at the moment, a lifting plate 10 drives a stamping head 11 to move downwards to stamp the sheet material, after the stamping is finished, the motor 3 is in reverse transmission, the lifting plate 10 drives the stamping head 11 to move upwards, the two groups of stamping dies 17 move backwards, the sheet metal part formed by stamping at the moment falls from the blanking port of the base 1, the sheet metal part is prevented from being taken out of the die cavity of the stamping dies 17 manually, time and labor are saved, the production efficiency of the sheet metal part is improved, and then the positioning bolt 22 is screwed to quickly insert and pull the positioning bolt 22 in the positioning hole of the inserted rod 19, so that the inserted rod 19 is quickly inserted and pulled in the socket of the connecting block 21 under the matching use of the connecting plate 18 and the first handle 20, the stamping dies 17 and the hollow connecting block 16 are conveniently and quickly detached, the stamping dies 17 are conveniently replaced at any time according to production requirements, the use convenience of the device is improved, and then, the supporting plate 23, the collecting box 24, the shrinkage rod 25 and the spring 26 are arranged, The moving plate 27, the rubber pad 28 and the second handle 29 are convenient for buffer type collection of sheet metal parts falling from the base 1, collision damage of the sheet metal parts when falling is avoided, and the using effect of the device is improved.

According to the automatic blanking device for stamping sheet metal parts, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the automatic blanking device can be implemented as long as the beneficial effects of the automatic blanking device are achieved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic blanking device for stamping sheet metal parts is characterized by comprising a base (1), a motor base (2), a motor (3), a first bevel gear (4), two groups of second bevel gears (5), two groups of screw shafts (6), two groups of right-angle fixing blocks (7), two groups of belt pulleys (8), a belt (9), a lifting plate (10), a stamping head (11), two groups of third bevel gears (12), two groups of screw pipes (13), a plurality of groups of fixing blocks (14), two groups of screw rods (15), two groups of hollow connecting blocks (16), two groups of fixing components and two groups of stamping dies (17), wherein a blanking port is arranged in the middle of the base (1), the motor (3) is fixed on the right side of the top end of the base (1) through the motor base (2), the output end of the motor (3) is connected with the first bevel gear (4), and the first bevel gear (4) is in meshing transmission connection with the second bevel gears (5), two groups of second bevel gears (5) are respectively fixed at the bottom ends of two groups of screw shafts (6), the two groups of screw shafts (6) are respectively connected with two groups of right-angle fixing blocks (7) in a rotating way, the two groups of right-angle fixing blocks (7) are respectively fixed at the left side and the right side of the top end of the base (1), two groups of belt pulleys (8) are respectively fixed at the top ends of the two groups of screw shafts (6), the two groups of belt pulleys (8) are connected with each other in a driving way through a belt (9), a lifting plate (10) is connected with the two groups of screw shafts (6) in a screw-mounted way, a stamping head (11) is fixed at the middle part of the bottom end of the lifting plate (10) and is positioned above a blanking port of the base (1), two groups of third bevel gears (12) are respectively connected with the two groups of second bevel gears (5) in a meshing way, the two groups of third bevel gears (12) are respectively fixed at the outer side ends of the two groups of screw pipes (13), and the two groups of screw pipes (13) are respectively connected with the fixing blocks (14) in a rotating way, the left and right sides on base (1) top is evenly fixed respectively to multiunit fixed block (14), screw rod (15) are connected with solenoid (13) spiral shell dress, and the other end and hollow connecting block (16) of screw rod (15) are connected, two sets of hollow connecting block (16) slide with the left and right sides on base (1) top respectively and clamp, and two sets of hollow connecting block (16) are connected with two sets of stamping die (17) respectively through fixed subassembly, the bottom of stamping die (17) and the top contact of base (1), and the top that two sets of stamping die (17) can in close contact with stamping die (17) is provided with the die cavity.

2. The automatic blanking device for stamping sheet metal parts as recited in claim 1, wherein the fixing component comprises a connecting plate (18), an inserting rod (19), a first handle (20), a connecting block (21) and a positioning bolt (22), the connecting plate (18) is in contact with the top end of the hollow connecting block (16), the inserting rod (19) is fixed at the bottom end of the connecting plate (18) and is inserted into the hollow connecting block (16), the first handle (20) is fixed at the top end of the connecting plate (18), an opening is arranged at the inner side end of the hollow connecting block (16), the connecting block (21) is inserted into the hollow connecting block (16) and is fixed at the outer side end of the stamping die (17), the hollow connecting block (16) is in close contact with the stamping die (17), a socket is arranged on the connecting block (21), the inserting rod (19) penetrates through the socket of the connecting block (21), and a positioning hole is arranged at the bottom of the inserting rod (19), the positioning bolt (22) is inserted into the positioning hole of the inserted rod (19), and the positioning bolt (22) is in threaded connection with the bottom of the outer side end of the hollow connecting block (16).

3. The automatic blanking device for stamping sheet metal parts as recited in claim 1, further comprising a supporting plate (23), a fixed supporting component, a collecting box (24), a plurality of groups of retractable rods (25), a plurality of groups of springs (26), a moving plate (27), a rubber pad (28) and two groups of second handles (29), wherein the supporting plate (23) is connected with the bottom end of the base (1) through the fixed supporting component, a plurality of thick slots are arranged at the top end of the supporting plate (23), a plurality of groups of inserting blocks are arranged at the bottom end of the collecting box (24), the collecting box (24) is placed on the supporting plate (23) and is positioned below a blanking port of the base (1), an opening is arranged at the top end of the collecting box (24), the plurality of groups of retractable rods (25) are uniformly fixed on the inner side wall at the bottom end of the collecting box (24), the springs (26) are fixedly retractable sleeved on the rods (25), and the top ends of the retractable rods (25) are connected with the moving plate (27), the moving plate (27) is in sliding connection with the inner side walls of the left end and the right end of the collecting box (24), the rubber pads (28) are fixed on the moving plate (27), and the two groups of second handles (29) are symmetrically fixed at the left end and the right end of the collecting box (24) respectively.

4. The automatic blanking device for stamping sheet metal parts according to claim 3, wherein the fixed supporting assembly comprises a plurality of groups of supporting legs (30), a plurality of groups of cushion blocks (31) and a plurality of groups of foundation bolts (32), the groups of supporting legs (30) are uniformly fixed at the bottom end of the base (1), the supporting plate (23) is fixed among the groups of supporting legs (30), the cushion blocks (31) are fixed at the bottom ends of the supporting legs (30), and the cushion blocks (31) are connected with the ground through the foundation bolts (32).

5. The automatic blanking device for stamping of sheet metal parts as claimed in claim 1, further comprising a vibration isolation pad (33), wherein the vibration isolation pad (33) is fixed between the motor base (2) and the motor (3).

6. The automatic blanking device for stamping sheet metal parts as claimed in claim 5, wherein the motor (3) is a noise reduction motor.

7. The automatic blanking device for stamping sheet metal parts as recited in claim 6, characterized in that lubricating oil is coated between the second bevel gear (5) and the third bevel gear (12).