CN213230418U - Turning device is used in processing of ring forging with cooling body - Google Patents

Abstract

The utility model discloses a turnover device with a cooling mechanism for processing ring forging, which comprises a bottom plate, a double-shaft motor is arranged near the middle of the top of the bottom plate, the top of the bottom plate is fixedly connected with four supporting plates along the horizontal direction in sequence, two U-shaped plates are arranged above the bottom plate near the left and right sides along the front and back direction in sequence, the bottom of the U-shaped plate at the same side is fixedly connected with the top of the two supporting plates near the left and right sides respectively, the rotation of the first grinding wheel and the second grinding wheel driven by the driving motor can be realized through the mutual matching between the double-shaft motor, a servo motor, the first grinding wheel, the second grinding wheel, a driving motor, a threaded rod, a lifting plate, a turnover wheel, a sliding plate, an L-shaped plate and the U-shaped plate, the rotation of the first grinding wheel and the second grinding wheel driven by the double-shaft motor is driven by the turnover, thereby effectively improving the production efficiency.

Description

Turning device is used in processing of ring forging with cooling body

Technical Field

The utility model relates to a ring rolling spare processing technology field specifically is a turning device is used in ring rolling spare processing with cooling body.

Background

The ring forging is a blank for rolling the forging into a round shape, the dimensional tolerance of the product can be basically controlled, the machining amount is reduced, and most of the ring forging is a blank for bearing and gear ring flange products. The manufactured ring forging is inevitably rusted after being placed for a period of time, so that the ring forging needs to be subjected to rust removal treatment. In the rust removing process, the two sides of the ring forging are required to be processed by using the turnover device, but the turnover device in the prior art does not have a cooling mechanism or has poor cooling effect when in use, so that the production efficiency or the use efficiency of the turnover device are greatly reduced, and the subsequent processes of the turnover device are influenced, and therefore the turnover device with the cooling mechanism for processing the ring forging is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem lie in overcoming prior art's work efficiency low and cooling efficiency low grade defect, provide a turning device is used in ring rolling spare processing with cooling body. The turnover device with the cooling mechanism for processing the ring forging has the characteristics of high working efficiency, high cooling efficiency and the like.

In order to achieve the above object, the utility model provides a following technical scheme: a turnover device with a cooling mechanism for processing a ring forging comprises a bottom plate, wherein a double-shaft motor is installed at the position, close to the middle, of the top of the bottom plate, four supporting plates are fixedly connected to the top of the bottom plate in sequence along the horizontal direction, two U-shaped plates are sequentially arranged at the position, close to the left side and the right side, of the top of the bottom plate in sequence along the front-back direction, the bottoms of the two U-shaped plates at the same side are fixedly connected to the tops of the two supporting plates respectively at the positions, close to the left side and the right side, of the bottoms of the two U-shaped plates at the same side, a sliding plate is connected between the two U-shaped plates at the same side in a sliding manner, a plurality of uniformly distributed installation blocks are fixedly connected to the tops of the two sliding plates along the front-back direction, the installation blocks are arranged in, the bottom of one side of two adjacent double-shaft motors of the U-shaped plate at the front side is fixedly connected with a vertical plate, the back wall of the two vertical plates is close to the bottom and is connected with a first connecting rod through a rotating shaft and a bearing movably, the rotating shaft on the first connecting rod passes through a bearing inner ring and extends to the front side of the vertical plate and is connected with the front output end of the double-shaft motor through a first belt in a transmission way, one side of the two first connecting rods away from each other is connected with a second connecting rod through a rotating shaft and a bearing movably, the supporting plate adjacent to the vertical plate is provided with a through hole matched with the second connecting rod, one side of the two second connecting rods away from each other passes through the through hole respectively and is connected with a connecting block through a rotating shaft and a bearing movably, the two connecting blocks are respectively fixedly connected with the bottom of a sliding plate, the top of the U, the mounting plate is provided with a through hole matched with the sliding plate, one side of the sliding plate opposite to the mounting plate passes through the through hole and extends to the outer side of the mounting plate, a transverse plate is fixedly connected between the two mounting plates and is close to the middle, the front wall of the transverse plate is movably connected with the turnover wheel through a rotating shaft and a bearing, the rear end of the rotating shaft of the turnover wheel passes through the bearing inner ring and extends to the rear side of the transverse plate and is connected with the rear output end of the double-shaft motor through a second belt in a transmission way, the two sides of the mounting plate opposite to the top are respectively fixedly connected with a fixed plate, a lifting plate is arranged between the two mounting plates and is close to the top, the opposite sides of the two mounting plates are provided with limit grooves matched with the lifting plate, the top of the lifting plate is, the top and the bottom of threaded rod are respectively through pivot and bearing and fixed plate swing joint, two the top of threaded rod is passed the bearing inner circle and is extended to the fixed plate top, two connect through third belt drive between the threaded rod, are located the right side lateral wall of mounting panel is close to top department and installs servo motor, just servo motor's output and the threaded rod on right side are connected through fourth belt drive, the bottom of lifter plate is close to left side department and installs driving motor, just the first emery wheel of grinding of driving motor's output fixedly connected with, the bottom of lifter plate is close to right side department and has the dwang through bearing swing joint, the bottom fixedly connected with second emery wheel of dwang, the transmission is connected with the fifth belt between driving motor's output shaft and the dwang.

Preferably, be located the left side fixedly connected with storage tank of mounting panel, storage tank top and low portion are the opening setting respectively.

Preferably, be located the right side the water tank is installed to the right side wall of mounting panel, the bottom of water tank is close to right side department fixedly connected with outlet pipe, just the outlet pipe is linked together with the water tank is inside, the bottom fixedly connected with sprinkler pipe of outlet pipe, just the sprinkler pipe is linked together with the outlet pipe, the bottom fixedly connected with a plurality of evenly distributed's of sprinkler pipe, just the pipe is linked together with the sprinkler pipe is inside.

Preferably, be located the right-hand workbin that connects that is equipped with of mounting panel, just the top that connects the workbin sets up for the opening, it is equipped with the spout respectively to connect the inner wall to open about the workbin, swing joint has the sieve net board in the spout, the antetheca that connects the workbin set up with sieve net board assorted trompil, the right side lateral wall that connects the workbin is close to bottom fixedly connected with drain pipe, and installs the water valve on the drain pipe.

Preferably, the right side wall of the water tank is fixedly connected with an air guide pipe, a fan is installed in an inner cavity of the air guide pipe, a water pump is installed at the top of the water tank, a top water inlet of the water pump is fixedly connected with a first water pipe, the other end of the first water pipe is fixedly connected with the top of a drain pipe, the first water pipe is communicated with the drain pipe, a bottom water outlet of the water pump is fixedly connected with a second water pipe, and the second water pipe penetrates through the top of the water tank and extends into the water tank.

Preferably, the two U-shaped plates which are positioned in the horizontal direction are arranged in a bilateral symmetry mode by taking the central axis on the turnover wheel as a symmetry axis, and the two L-shaped plates which are positioned in the horizontal direction are arranged in a bilateral symmetry mode by taking the central axis on the turnover wheel as a bilateral symmetry axis.

Preferably, the left side and the right side of the turnover wheel are respectively provided with a rectangular groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the technical scheme, the first grinding wheel and the second grinding wheel are driven to rotate by the driving motor through the mutual matching of the double-shaft motor, the servo motor, the first grinding wheel, the second grinding wheel, the driving motor, the threaded rod, the lifting plate, the turnover wheel, the sliding plate, the L-shaped plate and the U-shaped plate, the double-shaft motor drives the turnover wheel to rotate, the double-shaft motor drives the sliding plate to move left and right, the transportation and rust removal treatment of materials can be achieved, and therefore the production efficiency of the device can be effectively improved;

2. when this technical scheme is using, through water tank, water pump, connect workbin, sieve mesh board, sprinkler pipe, the mutual cooperation between the fan, can realize the sprinkler pipe watering, the water pump will connect the water in the workbin to take out reuse in the water tank, the fan is cooled down the processing of taking out water back, can be to the effect of material cooling to can effectual improvement its availability factor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a side view of the flipping wheel of FIG. 1;

FIG. 4 is a side view of the U-shaped plate of FIG. 1;

FIG. 5 is a top plan view of the skateboard of FIG. 1;

figure 6 is a top view of the screen panel of figure 1.

Reference numbers in the figures: 1. a base plate; 2. mounting a plate; 3. a support plate; 4. a U-shaped plate; 5. mounting blocks; 6. an L-shaped rod; 7. a second grinding wheel; 8. a slide plate; 9. an L-shaped plate; 10. a first grinding wheel; 11. a double-shaft motor; 12. a vertical plate; 13. a first link; 14. a second link; 15. a transverse plate; 16. a turnover wheel; 17. a material storage box; 18. a fixing plate; 19. a lifting plate; 20. a drive motor; 21. a threaded rod; 22. a servo motor; 23. a water tank; 24. a water pump; 25. an air guide pipe; 26. a fan; 27. a water outlet pipe; 28. a sprinkler pipe; 29. a material receiving box; 30. a screen plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a turnover device with a cooling mechanism for processing a ring forging comprises a bottom plate 1, wherein a double-shaft motor 11 is arranged at the top part of the bottom plate 1 close to the middle part, the top part of the bottom plate 1 is fixedly connected with four supporting plates 3 along the horizontal direction in sequence, two U-shaped plates 4 are arranged above the bottom plate 1 close to the left and right sides along the front and back direction in sequence, the bottoms of the two U-shaped plates 4 positioned on the same side close to the left and right sides are respectively fixedly connected with the tops of the two supporting plates 3, a sliding plate 8 is connected between the two U-shaped plates 4 positioned on the same side in a sliding manner, a plurality of mounting blocks 5 which are uniformly distributed are fixedly connected at the top parts of the two sliding plates 8 along the front and back direction, the plurality of mounting blocks 5 are arranged in an array form from left to right, an L-shaped rod 6 is arranged between the two mounting blocks 5 positioned, the bottom of one side of two U-shaped plates 4 adjacent to a double-shaft motor 11 positioned at the front side is fixedly connected with a vertical plate 12, the back wall of the two vertical plates 12 close to the bottom is movably connected with a first connecting rod 13 through a rotating shaft and a bearing, the rotating shaft on the first connecting rod 13 penetrates through a bearing inner ring and extends to the front side of the vertical plate 12 and is in transmission connection with the front output end of the double-shaft motor 11 through a first belt, the far side of the two first connecting rods 13 is movably connected with a second connecting rod 14 through the rotating shaft and the bearing, a supporting plate 3 adjacent to the vertical plate 12 is provided with through holes matched with the second connecting rod 14, the far side of the two second connecting rods 14 respectively penetrates through the through holes and is movably connected with connecting blocks through the rotating shaft and the bearing, the two connecting blocks are respectively fixedly connected with the bottom of a sliding plate 8, the top of the U-shaped plate 4 is fixedly, a storage tank 17 is fixedly connected to the left side of the mounting plate 2 positioned at the left side, the top and the lower part of the storage tank 17 are respectively provided with an opening, a water tank 23 is arranged on the right side wall of the mounting plate 2 positioned at the right side, a water outlet pipe 27 is fixedly connected to the bottom of the water tank 23 near the right side, the water outlet pipe 27 is communicated with the inside of the water tank 23, a sprinkler pipe 28 is fixedly connected to the bottom of the sprinkler pipe 27, the sprinkler pipe 28 is fixedly connected to a plurality of uniformly distributed round pipes which are communicated with the inside of the sprinkler pipe 28, a through hole matched with a sliding plate 8 is arranged on the mounting plate 2, one side of the sliding plate 8 opposite to the mounting plate 2 passes through the through hole and extends to the outer side of the mounting plate 2, a transverse plate 15 is fixedly connected between the two mounting plates 2 near the middle, the rear end of a rotating shaft of the turnover wheel 16 penetrates through the inner ring of the bearing to extend to the rear side of the transverse plate 15 and is in transmission connection with the rear output end of the double-shaft motor 11 through a second belt, the left side and the right side of the turnover wheel 16 are respectively provided with a rectangular groove, two U-shaped plates 4 positioned in the horizontal direction are arranged in bilateral symmetry with the central axis on the turnover wheel 16 as a symmetry axis, two L-shaped plates 9 positioned in the horizontal direction are arranged in bilateral symmetry with the central axis on the turnover wheel 16, one opposite sides of the two mounting plates 2 near the top are respectively and fixedly connected with a fixed plate 18, a lifting plate 19 is arranged between the two mounting plates 2 near the top, one opposite side of the two mounting plates 2 is provided with a limit groove matched with the lifting plate 19, the top of the lifting plate 19 near the left side and the right side are respectively provided with threaded holes, matched threaded rods 21 are arranged in the, the top ends of the two threaded rods 21 penetrate through the bearing inner ring and extend to the upper side of the fixed plate 18, the two threaded rods 21 are connected through a third belt transmission, a servo motor 22 is installed at the position, close to the top, of the right side wall of the mounting plate 2 on the right side, the output end of the servo motor 22 is connected with the threaded rod 21 on the right side through a fourth belt transmission, a driving motor 20 is installed at the position, close to the left side, of the bottom of the lifting plate 19, the output end of the driving motor 20 is fixedly connected with a first grinding wheel 10, a rotating rod is movably connected to the position, close to the right side, of the bottom of the lifting plate 19 through a bearing, a second grinding wheel 7 is fixedly connected with the bottom end of the rotating rod, a fifth belt is connected between the output shaft of the driving motor 20 and the rotating rod in a transmission mode, and the two, The sliding plate 8, the L-shaped plate 9 and the U-shaped plate 4 are mutually matched, so that a driving motor 20 can drive a first grinding wheel 10 and a second grinding wheel 7 to rotate, a double-shaft motor 11 drives a turnover wheel 16 to rotate, the double-shaft motor 11 drives the sliding plate 8 to move left and right, the transportation and rust removal treatment of materials can be achieved, and the production efficiency can be effectively improved, a material receiving box 29 is arranged on the right side of a mounting plate 2 on the right side, the top of the material receiving box 29 is provided with an opening, the left inner wall and the right inner wall of the material receiving box 29 are respectively provided with a sliding chute, a screen plate 30 is movably connected in the sliding chute, the front wall of the material receiving box 29 is provided with an opening matched with the screen plate 30, the right side wall of the material receiving box 29 close to the bottom is fixedly connected with a drain pipe, a water valve is arranged on the drain, the top of the water tank 23 is provided with a water pump 24, a water inlet at the top of the water pump 24 is fixedly connected with a first water pipe, the other end of the first water pipe is fixedly connected with the top of a drain pipe, the first water pipe is communicated with a water discharge pipe, the water outlet at the bottom of the water pump 24 is fixedly connected with a second water pipe, the second water pipe penetrates through the top of the water tank 23 and extends into the water tank 23, through the mutual cooperation among the water tank 23, the water pump 24, the material receiving box 29, the screen plate 30, the sprinkling pipe 28 and the fan 26, the sprinkling of the sprinkling pipe 28 can be realized, the water in the material receiving box 29 is pumped back into the water tank 23 by the water pump 24 for reuse, the pumped water is cooled by the fan 26, the material can be cooled, therefore, the service efficiency of the motor can be effectively improved, and the double-shaft motor 11, the servo motor 22, the driving motor 20, the fan 26, the water pump 24 and an external power line are electrically connected with a control switch.

The working principle is as follows: when the technical scheme is used, firstly, the water tank 23 is filled with water, materials are placed into the material storage tank 17, then the double-shaft motor 11, the driving motor 20, the servo motor 22, the water pump 24 and the fan 26 are started through the external power supply, the double-shaft motor 11 drives the first connecting rod 13 to rotate, the first connecting rod 13 pulls the second connecting rod 14 to move left and right, then the second connecting rod 14 pulls the sliding plate 8 to slide left and right in the two U-shaped plates 4, the sliding plate 8 drives the mounting block 5 and the L-shaped rod 6 to move left and right when moving left and right, if the top of the L-shaped rod 6 touches the materials, the L-shaped rod 6 is pushed to incline right when moving left, the L-shaped rod 6 returns to the left inclined state due to gravity when reaching the left side of the materials, the left end of the L-shaped rod 6 cannot continue to rotate left when blocking the surface of the sliding plate 8, and then the top of the L-shaped rod 6 pushes the, when a material is pushed below a first grinding wheel 10, a servo motor 22 rotates clockwise to drive two threaded rods 21 to rotate clockwise, a lifting plate 19 is driven to descend during rotation, the lifting plate 19 drives the first grinding wheel 10 and a second grinding wheel 7 to descend, the servo motor 22 stops rotating when the lifting plate descends to a certain position, a driving motor 20 drives the first grinding wheel 10 and the second grinding wheel 7 to rotate to perform rust removal treatment on the material, after rust removal is completed, the servo motor 22 drives the threaded rods 21 to rotate anticlockwise to drive the lifting plate 19 to ascend and also drive the first grinding wheel 10 and the second grinding wheel 7 to ascend, at the moment, the L-shaped rod 6 continuously pushes the material with one surface subjected to rust removal to the right into a clamping groove of an overturning wheel 16, the overturning wheel 16 overturns the material by one surface, when overturning is completed, the L-shaped rod 6 continuously pushes the material to the right to reach the position below the second grinding wheel 7, at the moment, the next material also reaches the position below the first grinding wheel 10, the first grinding wheel 10 descends to a certain position to remove rust on another material, the second grinding wheel 7 descends to remove rust on the overturned material, after the rust removal is finished, the first grinding wheel 10 and the second grinding wheel 7 ascend to specified positions at the same time, the work is repeated continuously and repeatedly, the production efficiency can be effectively improved, finally the material is pushed into the material receiving box 29 by the L-shaped rod 6, then the valve on the water outlet pipe 27 is opened to spray water downwards through the sprinkler pipe 28, the material is cooled, the cooled water is separated through the screen plate 30, the separated water is pumped back into the water tank 23 by the water pump 24 to be reused, the water pipe is cooled by the fan 26, the pumped back water is indirectly cooled, the screen plate 30 in the material receiving box 29 can be pulled out to facilitate the taking of the material, when the water cannot be recycled, the drain pipe on the material receiving box 29 is opened to discharge the water, by repeating the operation, more materials can be derusted, and the use efficiency can be effectively improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a turning device is used in ring forging processing with cooling body, includes bottom plate (1), its characterized in that: the top of the bottom plate (1) is close to the middle and is provided with a double-shaft motor (11), the top of the bottom plate (1) is fixedly connected with four supporting plates (3) in sequence along the horizontal direction, the upper part of the bottom plate (1) is close to the left and right sides and is sequentially provided with two U-shaped plates (4) along the front and back directions, the bottoms of the two U-shaped plates (4) positioned on the same side are respectively fixedly connected with the tops of the two supporting plates (3) near the left and right sides, a sliding plate (8) is connected between the two U-shaped plates (4) positioned on the same side in a sliding manner, the tops of the two sliding plates (8) are fixedly connected with a plurality of uniformly distributed mounting blocks (5) along the front and back directions, the plurality of mounting blocks (5) are arranged in an array manner from left to right, an L-shaped rod (6) is arranged between the two mounting blocks (5) positioned on the front and back directions, the, the bottom of one side of two adjacent double-shaft motors (11) of U-shaped plate (4) that are located the front side is fixedly connected with riser (12), the back wall of two riser (12) is close to the bottom and has first connecting rod (13) through pivot and bearing swing joint, the pivot on first connecting rod (13) passes the bearing inner circle and extends to the front side of riser (12) to be connected with the transmission of the preceding output of double-shaft motors (11) through first belt, one side that two first connecting rod (13) kept away from has second connecting rod (14) through pivot and bearing swing joint, be located with riser (12) adjacent backup pad (3) set up with second connecting rod (14) assorted through-hole, and two one side that second connecting rod (14) kept away from passes the through-hole respectively, and have the connecting block through pivot and bearing swing joint, two the connecting block respectively with the bottom fixed connection of slide (8), the top fixedly connected with L shaped plate (9) of U shaped plate (4), the top of bottom plate (1) is close to two mounting panels (2) of left and right sides department fixedly connected with, slide (8) assorted through-hole has been seted up on mounting panel (2), slide (8) pass the outside that the through-hole extends to mounting panel (2) with the relative one side of mounting panel (2), two be close to middle department fixedly connected with diaphragm (15) between mounting panel (2), the antetheca of diaphragm (15) is close to middle department through pivot and bearing swing joint trip wheel (16), and the pivot rear end of trip wheel (16) passes the bearing inner circle and extends to the rear side of diaphragm (15) to be connected through second belt and biax motor (11) back output transmission, two the relative one side of mounting panel (2) is close to top department difference fixed connection fixed plate (18), the lifting plate (19) is arranged between the two mounting plates (2) near the top, the relative side of the two mounting plates (2) is provided with a limit groove matched with the lifting plate (19), the top of the lifting plate (19) is close to the left and right sides and is respectively provided with a threaded hole, a threaded rod (21) matched with the threaded hole is arranged in the threaded hole, the top end and the bottom end of the threaded rod (21) are respectively movably connected with the fixed plate (18) through a rotating shaft and a bearing, the top ends of the two threaded rods (21) penetrate through the inner ring of the bearing and extend to the upper part of the fixed plate (18), the two threaded rods (21) are connected through a third belt transmission, the right side wall of the mounting plate (2) on the right side is provided with the servo motor (22) near the top, and the output end of the servo motor (22) is connected with, the bottom of lifter plate (19) is close to left side department and installs driving motor (20), just the first emery wheel of output fixedly connected with (10) of driving motor (20), the bottom of lifter plate (19) is close to right side department and has the dwang through bearing swing joint, the bottom fixedly connected with second emery wheel of dwang (7), the transmission is connected with the fifth belt between the output shaft of driving motor (20) and the dwang.

2. The apparatus of claim 1, wherein the apparatus further comprises: be located the left side fixedly connected with storage case (17) of mounting panel (2), storage case (17) top and low portion are the opening setting respectively.

3. The apparatus of claim 1, wherein the apparatus further comprises: be located the right side water tank (23) are installed to the right side wall of mounting panel (2), the bottom of water tank (23) is close to right side fixedly connected with outlet pipe (27), just outlet pipe (27) are linked together with water tank (23) inside, the bottom fixedly connected with sprinkler pipe (28) of outlet pipe (27), just sprinkler pipe (28) are linked together with outlet pipe (27), the bottom fixedly connected with a plurality of evenly distributed's of sprinkler pipe (28) pipe, just the pipe is linked together with sprinkler pipe (28) inside.

4. The apparatus of claim 1, wherein the apparatus further comprises: be located the right-hand workbin (29) that connects that is equipped with of mounting panel (2), just the top that connects workbin (29) sets up for the opening, the inner wall is opened and is equipped with the spout respectively about connecting workbin (29), swing joint has screen cloth board (30) in the spout, connect the antetheca of workbin (29) to offer and sieve screen cloth board (30) assorted trompil, the right side lateral wall that connects workbin (29) is close to bottom fixedly connected with drain pipe, and installs the water valve on the drain pipe.

5. The apparatus of claim 3, wherein the turning device comprises a cooling mechanism, and the turning device comprises: the fan water heater is characterized in that an air guide pipe (25) is fixedly connected to the side wall of the right side of the water tank (23), a fan (26) is installed in an inner cavity of the air guide pipe (25), a water pump (24) is installed at the top of the water tank (23), a first water pipe is fixedly connected to a top water inlet of the water pump (24), the other end of the first water pipe is fixedly connected to the top of a drain pipe, the first water pipe is communicated with the drain pipe, a second water pipe is fixedly connected to a bottom water outlet of the water pump (24), and the second water pipe penetrates through the top of the water tank (23) and extends into the water tank (23).

6. The apparatus of claim 1, wherein the apparatus further comprises: the U-shaped plates (4) are arranged in the horizontal direction in a bilateral symmetry mode by taking the central axis on the turnover wheel (16) as a symmetry axis, and the L-shaped plates (9) are arranged in the horizontal direction in a bilateral symmetry mode by taking the central axis on the turnover wheel (16) as a symmetry axis.

7. The apparatus of claim 1, wherein the apparatus further comprises: rectangular grooves are respectively formed in the left side and the right side of the turning wheel (16).

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