Automatic feeding and discharging device for double-station motor shaft machining

Abstract

The invention relates to the technical field of metal machining, and discloses an automatic feeding and discharging device for double-station motor shaft machining, which comprises two numerically controlled lathes arranged in parallel, a feeding rack is arranged between the two numerically controlled lathes, and a feeding conveying mechanism, a discharging conveying mechanism and a motor shaft transfer mechanism are arranged on the feeding rack; and the motor shaft transfer mechanism comprises a pair of clamping jaw cylinders capable of lifting, translating and overturning. By means of the motor shaft transferring mechanism, the to-be-machined motor shaft workpiece or the machined motor shaft workpiece can be automatically fed and discharged, the stability of the machining takt can be effectively guaranteed, the labor cost is greatly reduced, and the machining efficiency of the motor shaft is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to an automatic loading and unloading device for processing a double-station motor shaft. Background Art

[0002] The motor shaft is the main part of the motor. Because it is in the shape of a rotating body, it can generally be turned on a CNC lathe. In the existing motor shaft processing, the loading and unloading of the motor shaft on the CNC lathe generally requires workers to load and unload the materials. One worker can manage 2-3 CNC lathes at most, which increases the workload and the processing rhythm is relatively unstable, and the processing efficiency of the motor shaft is relatively low. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic loading and unloading device for double-station motor shaft processing. Through the motor shaft transfer mechanism, the motor shaft workpiece to be processed or completed can be automatically loaded and unloaded, which can effectively ensure the stability of the processing rhythm, greatly reduce labor costs and improve the motor shaft processing efficiency.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: An automatic loading and unloading device for double-station motor shaft processing, comprising two CNC lathes arranged in parallel, a feeding frame is arranged between the two CNC lathes, and the feeding frame is provided with a feeding conveying mechanism, a discharging conveying mechanism and a motor shaft transfer mechanism; The motor shaft transfer mechanism comprises a pair of clamping claw cylinders which can be lifted, translated and turned.

[0005] Through the above technical solution, the staff only needs to place the motor shaft workpieces to be processed on the feed conveyor mechanism in order, and take out the processed motor shaft workpieces from the discharge conveyor mechanism. Other work can be automatically completed by the motor shaft transfer mechanism, which can greatly reduce labor costs. One staff member can manage 4-6 groups at a time (two CNC lathes as a group), which can greatly reduce labor costs and reduce the tediousness of the staff's work.

[0006] The present invention is further configured as follows: the motor shaft transfer mechanism comprises a linear module spanning above two CNC lathes, a moving part is fixed on a slider of the linear module, a lifting column is slidably connected inside the moving part, a bearing seat is fixed at the lower end of the lifting column, and a flip shaft is rotatably connected to the bearing seat; the linear module can drive the moving part to move left or right; The flip shaft is inserted and fixed to one end of the flip arm, and the other end of the flip arm is fixedly connected to one of the clamping claw cylinders. The two clamping claw cylinders are respectively fixed to the two ends of the right-angle plate, and the right-angle end of the right-angle plate is arranged on the left side of the flip shaft; A clamp block is fixed on each of the pair of clamps of the clamp cylinder, and a circular arc groove is arranged on the clamp block. The linear module is electrically connected to the controller and fixed on the feeding machine frame; the controller controls the clamp cylinder.

[0007] The present invention is further configured as follows: the right end of the flip shaft is fixed to one end of the driving arm, the other end of the driving arm is rotatably connected to a pin, the pin is fixed to the end of the piston rod of the cylinder, the cylinder body of the cylinder is rotatably connected to the support, and the support is fixed to the lifting column; The lifting column is fixed with a guide rail and a rack arranged in parallel, the guide rail is slidably connected to the moving part, the rack is meshed with a gear, the gear is fixed to the motor shaft of the servo motor, and the servo motor is fixed to the moving part. The controller controls the servo motor and the cylinder.

[0008] The servo motor drives the gear to rotate, the gear drives the rack to move, and the rack drives the lifting column to move up or down. The servo motor can accurately control the upward or downward movement of the lifting column; The movement of the piston rod of the cylinder can drive the pin shaft to move, and the pin shaft drives one end of the driving arm to flip around the flip axis. While flipping, the driving arm drives the flip axis to rotate a certain angle, generally 90 degrees. The flip axis drives the flip arm to flip, and the flip arm drives one of the gripper cylinders to flip, and the gripper cylinder drives the other gripper cylinder to flip through the right-angle plate.

[0009] The present invention is further configured as follows: the feed conveying mechanism comprises two synchronously moving chains, the chains are connected to a plurality of V-shaped support plates evenly distributed along the chains, and the motor shaft workpiece to be processed is placed on a corresponding pair of V-shaped support plates; the ends of the chains are connected to sprockets, the two sprockets on the front side and the two sprockets on the rear side are respectively fixed on a corresponding sprocket shaft, the sprocket shafts are rotatably connected to the feeder frame, and one of the sprocket shafts is connected to a second motor that drives it to rotate; The discharging conveying mechanism includes a discharging conveyor belt, on which a plurality of evenly distributed baffles are fixed, and the processed motor shaft workpiece is placed between two corresponding baffles. Both ends of the discharging conveyor belt are tensioned on pulleys, which are rotatably connected to the feeding frame, one of which is connected to a third servo motor for driving the pulley to rotate, and the second motor and the third servo motor are both electrically connected to the controller and fixed to the feeding frame.

[0010] The present invention is further configured as follows: a first proximity sensor, a second proximity sensor and a pair of lifting arms are provided above the front ends of the two chains, the first proximity sensor is directly opposite to the motor shaft workpiece placed on the V-shaped support plate; the second proximity sensor is arranged higher than the first proximity sensor; The rear ends of the pair of lifting arms are formed with a semicircular groove with an upper opening, and the front ends of the pair of lifting arms are fixed on a lifting plate, and the lifting plate is fixed on a piston rod and a guide rod of a guide cylinder. The first proximity sensor, the second proximity sensor and the guide cylinder are fixed on a feeder frame, and the first proximity sensor and the second proximity sensor are electrically connected to a controller, and the controller controls the guide cylinder.

[0011] The present invention is further configured as follows: a baffle is provided on the outside of one of the chains, a cylinder bracket is provided on the outside of the front end of the other chain, a third cylinder is fixed on the cylinder bracket, a push head is fixed on the end of the piston rod of the third cylinder, the cylinder bracket is fixed on the feeder frame, and the controller controls the third cylinder.

[0012] The present invention is further configured as follows: a pair of sleeves are fixed at the lower end of the V-shaped support plate, a latch hole is formed on the sleeve, and a latch is inserted and fixed in the latch hole; The sleeve is inserted into the end of the long pin corresponding to the chain; the end of the long pin is formed with an annular groove, and the latch is inserted into the annular groove. The sleeve can rotate on the long pin and can be flipped and offset at a certain angle to adapt to the movement of the chain. The cooperation between the latch and the annular groove can prevent the sleeve from being separated from the long pin.

[0013] The present invention is further configured as follows: a limit bar is respectively provided above both ends of the discharging conveyor belt, and the limit bar is fixed on the feeding frame, which can prevent the processed motor shaft workpiece on the discharging conveyor belt from being blocked when the worker is too late or forgets to remove it, thereby preventing the workpiece from falling.

[0014] The outstanding effects of the present invention are: Compared with the existing technology, the motor shaft transfer mechanism can automatically load and unload the motor shaft workpiece to be processed or completed, which can effectively ensure the stability of the processing rhythm, greatly reduce labor costs and improve processing efficiency; The motor shaft workpieces to be processed can be fed one by one through the feeding conveying mechanism, and the processed motor shaft workpieces can be discharged in an orderly manner through the discharging conveying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view of the present invention; Figure 3 for Figure 1 A partial enlarged view of A; Figure 4 for Figure 2 A partial enlarged view of B; Figure 5 It is a partial schematic diagram of the motor shaft transfer mechanism of the present invention; Figure 6 Another side view of the motor shaft transfer mechanism of the present invention; Figure 7 It is a structural schematic diagram of the feeding conveying mechanism and the discharging conveying mechanism of the present invention; Figure 8 for Figure 7 A partial enlarged view of C; Fig. 9 It is a schematic diagram of the assembly of the chain and the V-shaped support plate of the present invention; Fig.10 for Fig. 9 About the cross-sectional view of DD; Fig.11 for Fig.10 About the cross-sectional view of EE.

[0016] Reference numerals: 10, CNC lathe; 20. Feeding rack; 30. Feeding and conveying mechanism; 301. Chain; 3011. Long pin; 3012. Annular groove; 302. V-shaped support plate; 303. First proximity sensor; 304. Second proximity sensor; 305. Lifting arm; 3051. Semicircular groove; 306. Lifting plate; 307. Guide cylinder; 308. Baffle; 309. Cylinder bracket; 310. Third cylinder; 311. Pushing head; 312. Casing; 3121. Pin hole; 313. Pin; 40. Discharging conveying mechanism; 401. Discharging conveyor belt; 402. Stop bar; 403. Limiting bar; 50, motor shaft transfer mechanism; 501, gripper cylinder; 502, linear module; 503, moving part; 504, lifting column; 505, bearing seat; 506, flip axis; 507, flip arm; 508, right angle plate; 509, clamping block; 5091, arc groove; 510, driving arm; 511, pin shaft; 512, cylinder; 513, support; 514, guide rail; 515, rack; 516, gear; 517, servo motor; 90. Motor shaft workpiece. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] The following references Figures 1 to 11 The present invention is described: An automatic loading and unloading device for double-station motor shaft processing, such as Figure 1As shown, it includes two CNC lathes 10 arranged in parallel, a feeding frame 20 is arranged between the two CNC lathes 10, and the feeding frame 20 is provided with a feeding conveying mechanism 30, a discharging conveying mechanism 40 and a motor shaft transfer mechanism 50; The motor shaft transfer mechanism 50 includes a pair of clamping claw cylinders 501 that can be raised and lowered, translated, and flipped.

[0019] Through the above technical solution, the staff only needs to place several motor shaft workpieces 90 to be processed in an orderly manner on the feed conveying mechanism, and take out the processed motor shaft workpieces from the discharge conveying mechanism. Other work can be automatically completed through the motor shaft transfer mechanism, which can greatly reduce labor costs.

[0020] like Figure 4 , Figure 5 , Figure 6 As shown, the motor shaft transfer mechanism 50 includes a linear module 502 spanning above the two CNC lathes 10, a moving part 503 is fixed on the slider of the linear module 502, a lifting column 504 is slidably connected inside the moving part 503, a bearing seat 505 is fixed at the lower end of the lifting column 504, and a flip shaft 506 is rotatably connected to the bearing seat 505; the linear module can drive the moving part to move left or right; The flip shaft 506 is inserted and fixed on one end of the flip arm 507, and the other end of the flip arm 507 is fixedly connected to one of the clamping cylinders 501. The two clamping cylinders 501 are respectively fixed on the two ends of the right-angle plate 508, and the right-angle end of the right-angle plate 508 is set on the left side of the flip shaft 506; A clamp block 509 is fixed on each of the pair of clamps of the clamp cylinder 501, and a circular arc groove 5091 is provided on the clamp block 509. The linear module 502 is electrically connected to the controller and fixed on the feeder frame 20; the controller controls the clamp cylinder.

[0021] The right end of the flip shaft 506 is fixed to one end of the driving arm 510, and the other end of the driving arm 510 is rotatably connected to a pin 511, and the pin 511 is fixed to the end of the piston rod of the cylinder 512, and the cylinder body of the cylinder 512 is rotatably connected to the support 513, and the support 513 is fixed to the lifting column 504; The lifting column 504 is fixed with a guide rail 514 and a rack 515 arranged in parallel, the guide rail 514 is slidably connected to the moving part 503, the rack 515 is meshed with a gear 516, and the gear 516 is fixed to the motor shaft of a servo motor 517, and the servo motor 517 is fixed to the moving part 503. The controller controls the servo motor and the cylinder 512.

[0022] The servo motor drives the gear to rotate, the gear drives the rack to move, and the rack drives the lifting column to move up or down. The servo motor can accurately control the upward or downward movement of the lifting column; The movement of the piston rod of the cylinder can drive the pin shaft to move, and the pin shaft drives one end of the driving arm to flip around the flip axis. While flipping, the driving arm drives the flip axis to rotate a certain angle, generally 90 degrees. The flip axis drives the flip arm to flip, and the flip arm drives one of the gripper cylinders to flip, and the gripper cylinder drives the other gripper cylinder to flip through the right-angle plate.

[0023] like Figure 2 , Figure 3 As shown, the feeding conveying mechanism 30 includes two synchronously moving chains 301, and the chains 301 are connected to a plurality of V-shaped support plates 302 evenly distributed along the chains, and the motor shaft workpiece 90 to be processed is placed on a corresponding pair of V-shaped support plates 302; the ends of the chains 301 are connected to sprockets, and the two sprockets on the front side and the two sprockets on the rear side are respectively fixed on a corresponding sprocket shaft, and the sprocket shafts are rotatably connected to the feeding frame, and one of the sprocket shafts is connected to a second motor that drives it to rotate; The discharging conveying mechanism 40 comprises a discharging conveyor belt 401, on which a plurality of evenly distributed baffles 402 are fixed, and the processed motor shaft workpiece 90 is placed between two corresponding baffles 402. Both ends of the discharging conveyor belt are tensioned on pulleys, which are rotatably connected to the feeding frame, one of which is connected to a third servo motor for driving the pulley to rotate, and the second motor and the third servo motor are both electrically connected to the controller and fixed to the feeding frame.

[0024] like Figure 7 , Figure 8 As shown, a first proximity sensor 303, a second proximity sensor 304 and a pair of lifting arms 305 are provided above the front ends of the two chains 301. The first proximity sensor 303 is directly facing the motor shaft workpiece 90 placed on the V-shaped support plate 302; the second proximity sensor 304 is arranged higher than the first proximity sensor 303; The rear ends of the pair of lifting arms 305 are formed with semicircular grooves 3051 with upper openings, and the front ends of the pair of lifting arms 305 are fixed on the lifting plate 306, and the lifting plate 306 is fixed on the piston rod and the guide rod of the guide cylinder 307. The first proximity sensor 303, the second proximity sensor 304 and the guide cylinder 307 are fixed on the feeding frame 20, and the first proximity sensor 303 and the second proximity sensor 304 are electrically connected to the controller, and the controller controls the guide cylinder.

[0025] A baffle 308 is provided on the outside of one of the chains 301, and a cylinder bracket 309 is provided on the outside of the front end of the other chain 301. A third cylinder 310 is fixed on the cylinder bracket 309, and a push head 311 is fixed to the end of the piston rod of the third cylinder 310. The cylinder bracket is fixed on the feeder frame, and the controller controls the third cylinder.

[0026] like Figure 9-11 As shown, a pair of sleeves 312 are fixed at the lower end of the V-shaped support plate 302, and a latch hole 3121 is formed on the sleeve 312, and a latch 313 is inserted and fixed in the latch hole 3121; The sleeve 312 is inserted into the end of the long pin 3011 corresponding to the chain 301; the end of the long pin 3011 is formed with an annular groove 3012, and the pin 313 is inserted into the annular groove 3012. The sleeve can rotate on the long pin and can be flipped and offset at a certain angle to adapt to the movement of the chain. The cooperation between the pin and the annular groove can prevent the sleeve from being separated from the long pin.

[0027] like Figure 7 As shown, a limit bar 403 is provided above each end of the discharge conveyor belt 401, and the limit bar 403 is fixed on the feeding frame 30 to prevent the processed motor shaft workpiece on the discharge conveyor belt from being blocked when the worker is too late or forgets to remove it, thereby preventing the workpiece from falling.

[0028] Working principle: First, the chain moves from back to front, and the staff puts multiple motor shaft workpieces to be processed 90 in order on the corresponding V-shaped support plate at a time. The chain drives the V-shaped support plate to move, and the V-shaped support plate drives the motor shaft workpiece to be processed to move forward; Second, when the first proximity sensor 303 detects that the frontmost motor shaft workpiece reaches the set position, the first proximity sensor transmits a signal to the controller, and the controller controls the piston rod of the guide cylinder 307 to extend, and the guide cylinder drives the lifting arm 305 to move upward through the lifting plate, and the semicircular groove of the lifting arm is inserted under the frontmost motor shaft, thereby lifting the motor shaft workpiece upward to a certain height, and then the controller controls the piston rod of the third cylinder 310 to extend, and the third cylinder drives the pushing head 311 to push the motor shaft that lifts it onto the baffle 308, thereby positioning the motor shaft; Third, the servo motor rotates and drives the lifting column to move downward through the gear and rack, and the lifting column drives the two clamping cylinders to move downward, and the clamping block of one of the clamping cylinders is inserted into the motor shaft workpiece that is lifted to a certain height, and then the clamping cylinder clamps the motor shaft workpiece, and the lifting column drives the motor shaft workpiece to move upward, and the second proximity sensor 304 can detect whether the clamping cylinder successfully clamps the motor shaft workpiece. If it fails to clamp, the second proximity sensor can still detect the motor shaft workpiece; if the clamping fails, an alarm is issued to call the staff to handle it; After the clamping is successful, the lifting arm moves down and resets, and then the controller controls the second motor to continue to rotate. The second motor drives the chain to move through the sprocket shaft and the sprocket, and the chain drives the V-shaped support plate to move forward. The V-shaped support plate drives the motor shaft workpiece to move forward again. When the first proximity sensor senses that the frontmost motor shaft workpiece moves to a specific position again, the chain stops; the lifting arm lifts the frontmost motor shaft workpiece after a certain period of time; Fourth, the linear module drives the moving part to move to the left and moves to the top of the CNC lathe on the left, then the piston rod of the cylinder 512 extends to drive the flip axis 506 to rotate 90 degrees, and the positions of the two clamping cylinders are rotated 90 degrees respectively. When the previous motor shaft workpiece in the CNC lathe on the left is processed, the lifting column drives the two clamping cylinders to move down again, and the other clamping cylinder clamps the processed motor shaft workpiece and separates it from the CNC lathe on the left; then the piston rod of the cylinder 512 contracts to drive the two clamping cylinders to rotate 90 degrees, and the clamping cylinder that originally clamped the motor shaft workpiece to be processed puts the motor shaft workpiece to be processed into the CNC lathe on the left for processing; Fifth, the lifting column moves upward, the linear module drives the moving part to move rightward to the top of the front end of the discharge conveyor 401, and then the lifting column moves downward, the corresponding clamping cylinder releases the processed motor shaft workpiece, and the motor shaft workpiece falls between the two baffles corresponding to the discharge conveyor; then the controller controls the third servo motor to rotate through a certain angle, and the discharge conveyor conveys the distance on the same side of the two baffles backward; Then, the clamping claw cylinder moves upward, leftward, and then downward to clamp the motor shaft to be processed on the lifting arm; Sixth, the lifting column moves up and the moving part moves right to the top of the CNC lathe on the right, and then the fourth step is performed in the same way to clamp out the motor shaft workpiece processed by the CNC lathe on the right and put in the new motor shaft workpiece for processing, thereby automatically completing the loading and unloading of the motor shaft.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic loading and unloading device for machining a double-station motor shaft, comprising two CNC lathes (10) arranged in parallel, with a feeding frame (20) arranged between the two CNC lathes (10), characterized in that: The feeding frame (20) is provided with a feeding conveying mechanism (30), a discharging conveying mechanism (40) and a motor shaft transfer mechanism (50); The motor shaft transfer mechanism (50) comprises a pair of clamping claw cylinders (501) capable of lifting, translating and flipping.

2. The automatic loading and unloading device for double-station motor shaft processing according to claim 1 is characterized in that: The motor shaft transfer mechanism (50) comprises a linear module (502) spanning above the two CNC lathes (10); a moving part (503) is fixed on a slider of the linear module (502); a lifting column (504) is slidably connected inside the moving part (503); a bearing seat (505) is fixed at the lower end of the lifting column (504); and a flip shaft (506) is rotatably connected to the bearing seat (505); The flip shaft (506) is inserted into and fixed on one end of the flip arm (507), the other end of the flip arm (507) is fixedly connected to one of the clamping claw cylinders (501), the two clamping claw cylinders (501) are respectively fixed on the two ends of the right angle plate (508), and the right angle end of the right angle plate (508) is arranged on the left side of the flip shaft (506); A clamping block (509) is fixed on each of the pair of clamping jaws of the clamping jaw cylinder (501), and a circular arc groove (5091) is provided on the clamping block (509).

3. The automatic loading and unloading device for double-station motor shaft processing according to claim 2 is characterized in that: The right end of the tilting shaft (506) is fixed to one end of the driving arm (510); the other end of the driving arm (510) is rotatably connected to a pin shaft (511); the pin shaft (511) is fixed to the end of a piston rod of a cylinder (512); the cylinder body of the cylinder (512) is rotatably connected to a support (513); and the support (513) is fixed to a lifting column (504); A guide rail (514) and a rack (515) arranged in parallel are fixed on the lifting column (504); the guide rail (514) is slidably connected to the moving part (503); the rack (515) is meshed with a gear (516); the gear (516) is fixed to the motor shaft of a servo motor (517); and the servo motor (517) is fixed to the moving part (503).

4. The automatic loading and unloading device for double-station motor shaft processing according to claim 1 is characterized in that: The feed conveying mechanism (30) comprises two synchronously moving chains (301), a plurality of V-shaped support plates (302) evenly distributed along the chains are connected to the chains (301), and the motor shaft workpiece (90) to be processed is placed on a corresponding pair of V-shaped support plates (302); The discharging conveying mechanism (40) comprises a discharging conveyor belt (401), on which a plurality of evenly distributed baffles (402) are fixed, and the processed motor shaft workpiece (90) is placed between two corresponding baffles (402).

5. The automatic loading and unloading device for double-station motor shaft processing according to claim 4 is characterized in that: A first proximity sensor (303), a second proximity sensor (304) and a pair of lifting arms (305) are provided above the front ends of the two chains (301); the first proximity sensor (303) is directly opposite to the motor shaft workpiece (90) placed on the V-shaped support plate (302); the second proximity sensor (304) is arranged higher than the first proximity sensor (303); A semicircular groove (3051) with an upper opening is formed at the rear ends of the pair of lifting arms (305), and the front ends of the pair of lifting arms (305) are fixed on the lifting plate (306), and the lifting plate (306) is fixed on the piston rod and the guide rod of the guide cylinder (307).

6. The automatic loading and unloading device for double-station motor shaft processing according to claim 5 is characterized in that: A baffle (308) is provided on the outer side of one of the chains (301), a cylinder bracket (309) is provided on the outer side of the front end of the other chain (301), a third cylinder (310) is fixed on the cylinder bracket (309), and a push head (311) is fixed on the end of the piston rod of the third cylinder (310).

7. The automatic loading and unloading device for double-station motor shaft processing according to claim 4 is characterized in that: A pair of sleeves (312) are fixed at the lower end of the V-shaped support plate (302), a latch hole (3121) is formed on the sleeve (312), and a latch (313) is inserted and fixed in the latch hole (3121); The sleeve (312) is inserted into the end of the long pin (3011) corresponding to the chain (301); the end of the long pin (3011) is formed with an annular groove (3012), and the latch pin (313) is inserted into the annular groove (3012).

8. The automatic loading and unloading device for double-station motor shaft processing according to claim 4 is characterized in that: A limit bar (403) is respectively provided above both ends of the discharge conveyor belt (401), and the limit bar (403) is fixed on the feeder frame (30).

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