CN210412093U

CN210412093U - Precision press

Info

Publication number: CN210412093U
Application number: CN201921302336.8U
Authority: CN
Inventors: 王云华
Original assignee: Wuxi Gaoen Electronic Technology Co ltd
Current assignee: Wuxi Gaoen Electronic Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-04-28
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a precision press machine, which has the technical proposal that the precision press machine comprises a frame, an upper pressing die, a crankshaft, a transmission mechanism, a flywheel, a rotating shaft and a clutch mechanism; the flywheel is rotationally arranged on the frame; the clutch mechanism comprises a first friction wheel, a second friction wheel and a driving mechanism, the first friction wheel is arranged on a wheel shaft of the flywheel, the second friction wheel is rotatably arranged on the rack through a rotating shaft, and the axis of the rotating shaft is superposed with the axis of the wheel shaft of the flywheel; the driving mechanism drives the second friction wheel to move to a first position and a second position; when the friction wheel is at the first position, the first friction wheel drives the second friction wheel to rotate, and when the friction wheel is at the second position, the first friction wheel is separated from the second friction wheel; the crankshaft is rotatably arranged on the rack, driven by the second friction wheel to rotate, and drives the upper pressing die to lift through the transmission mechanism during rotation. The second friction wheel is driven to be abutted against and separated from the first friction wheel through the driving mechanism, so that stamping of the upper pressing die is realized, and the clutch mechanism is simple in structure and easy to maintain.

Description

Precision press

Technical Field

The utility model relates to a stamping equipment field, more specifically say, it relates to an accurate press.

Background

The press machine is a universal press machine with an exquisite structure, has the characteristics of wide application, high production efficiency and the like, and can be widely applied to processes of cutting, punching, blanking, bending, riveting, forming and the like. The metal blank is subjected to strong pressure to cause plastic deformation and fracture of the metal, so that the metal blank is processed into a stamping part.

In the prior art, chinese patent publication No. CN102092146A discloses a press machine, which includes a support for supporting the whole press machine, a motor disposed on the support, a big belt pulley, a v-belt connecting the motor and the big belt pulley, a pinion, a transmission shaft connecting the big belt pulley and the pinion, a big gear engaged with the pinion, a clutch on the right side of the big gear, a brake, a crank shaft connecting the clutch and the brake, a connecting rod below the crank shaft, a slide block connected with the connecting rod, an upper press mold connected with the slide block and a lower press mold disposed on a base and corresponding to the upper press mold. The working principle is that when the press machine works, a motor drives a big belt pulley through a triangle belt, a transmission shaft drives a small gear to rotate, the small gear is meshed with a big gear to drive the big gear to rotate, the big gear drives a crank shaft to rotate through a clutch, and the rotation of the crank shaft is changed into up-and-down reciprocating motion through a connecting rod which is vertically and rotationally connected; when the sliding block on the connecting rod and the upper die go down linearly, the upper pressing die can be driven to descend and is matched with the lower pressing die to punch the stamping part, so that the stamping part is connected in a forming way; after the punching work is finished, the sliding block moves upwards in a return stroke, the clutch automatically separates the crank shaft from the large gear, and meanwhile, the crank shaft is communicated with the brake, so that the sliding block is controlled to stop near a top dead center by controlling the rotation of the crank shaft, and the whole cold punching process is realized.

However, in the press machine in the prior art, the clutch is easy to have poor clutch effect after being used for a long time, and the clutch structure is complex, so that the maintenance is inconvenient, and therefore, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide an accurate press to clutch structure is complicated among the solution prior art, leads to maintaining inconvenient problem.

The utility model discloses a technical scheme realize like this: a precision press machine comprises a frame, an upper pressing die arranged on the frame, a crankshaft, a transmission mechanism, a flywheel, a rotating shaft and a clutch mechanism;

the flywheel is rotatably arranged on the frame;

the clutch mechanism comprises a first friction wheel, a second friction wheel and a driving mechanism, the first friction wheel is fixedly sleeved on a wheel shaft of the flywheel, the second friction wheel is rotatably arranged on the rack through a rotating shaft, the axis of the rotating shaft is overlapped with the axis of the wheel shaft of the flywheel, and the second friction wheel can axially move along the rotating shaft and is circumferentially and relatively fixed with the rotating shaft; the driving mechanism is used for driving the second friction wheel to move to a first position and a second position; when the first position is adopted, the first friction wheel drives the second friction wheel to rotate, and when the second position is adopted, the first friction wheel is separated from the second friction wheel;

the crankshaft is rotatably arranged on the rack and is driven by the second friction wheel to rotate, and the upper pressing die is driven to lift through the transmission mechanism during rotation.

Through adopting foretell technical scheme, during the processing stamping workpiece, can drive the flywheel and rotate and then drive first friction pulley and rotate, accessible actuating mechanism drive second friction pulley moves to the first position along the axis of pivot this moment, so that first friction pulley drives the second friction pulley and rotates and drive the pivot and rotate, and then drive the bent axle and rotate, accessible drive mechanism drives the moulding-die lift when the bent axle rotates, remove through actuating mechanism drive second friction pulley in order to realize the lift of moulding-die, and then realize carrying out stamping process to the stamping workpiece, this clutching mechanism simple structure, easy to maintain.

As a further improvement of the present invention, the driving mechanism includes a cylinder horizontally disposed on the frame, a limiting groove is circumferentially disposed on a side wall of the second friction wheel, the limiting groove is provided with a shifting fork, the shifting fork is rotatably connected with the second friction wheel, and a piston rod of the cylinder is connected to the shifting fork;

the shifting fork is driven by the cylinder to drive the second friction wheel to move along the axis of the rotating shaft, and when the second friction wheel moves to the first position, the first friction wheel is abutted against the second friction wheel; when the second friction wheel moves to the second position, the first friction wheel is separated from the second friction wheel.

By adopting the technical scheme, the shifting fork and the limiting groove are matched, so that the second friction wheel can rotate in the circumferential direction and keep relatively fixed on the axis of the rotating shaft; when the stamping part needs to be stamped, the cylinder can be controlled to extend so that the cylinder pushes the shifting fork to move towards the direction close to the first friction wheel, the shifting fork is stressed to drive the second friction wheel to move, when the second friction wheel moves to be abutted against the first friction wheel, the first friction wheel drives the second friction wheel to rotate so as to drive the rotating shaft to rotate, the rotating shaft can drive the crankshaft to rotate, and the transmission mechanism can drive the upper pressing die to lift when the crankshaft rotates, so that the stamping part can be stamped.

As a further improvement, the sliding groove has been seted up along the axis direction of pivot to the lateral wall of pivot, be provided with on the second friction pulley slide connect in the sliding block in sliding groove.

Through adopting foretell technical scheme, the cooperation of groove and the sliding block that slides makes cylinder drive second friction pulley contradict with first friction pulley to when making the second friction pulley rotate, can drive pivot and second friction pulley synchronous revolution, and then the drive crankshaft rotates, in order to realize the lifting of top die.

As a further improvement of the present invention, the transmission mechanism includes a polygonal prism which is hollow and fixed on the crankshaft, a connecting rod hinged to the bottom of the polygonal prism, and a guide block hinged to the bottom end of the connecting rod, and the frame is provided with a guide groove for the guide block to slide up and down;

the two ends of the crankshaft penetrate through the two sides of the polygonal prism, and when the crankshaft is driven by the second friction wheel to rotate, the connecting rod shaft of the crankshaft can rotate from the high-position end to the low-position end to drive the polygonal prism to descend.

By adopting the technical scheme, when the connecting rod shaft of the crankshaft moves from the high-position end to the low-position end, the upper pressing die descends to enable the upper pressing die to press a stamping part placed on the lower pressing die, and when the low-position end to the high-position end of the connecting rod shaft of the crankshaft moves, the upper pressing die ascends to further complete the stamping process; the cooperation of guide way and guide block makes the bent axle rotate in order to drive the time of last moulding-die pushing down, and it can keep vertical pushing down to go up the moulding-die.

As a further improvement, the axis of pivot and the axis dislocation of the main shaft of bent axle, be connected through a pair of intermeshing's gear drive between bent axle and the pivot, one of them the gear housing is located the pivot is kept away from the one end of first friction pulley, another cover is located the bent axle is close to the one end of second friction pulley.

Through adopting foretell technical scheme, be connected through a pair of intermeshing's gear drive between pivot and the bent axle to reduce the slew velocity of bent axle, and then reduce the stamping speed of last moulding-die, make more stable in the press working process.

As a further improvement, be provided with in the frame and be used for the drive flywheel pivoted driving motor, driving motor's output shaft cover is equipped with the action wheel, the action wheel with through belt drive between the flywheel.

Through adopting foretell technical scheme, this press during operation, driving motor drive flywheel rotates, so that first friction pulley keeps the rotation state, when needs processing the stamping workpiece, the operator extends so that the motion of second friction pulley is inconsistent with first friction pulley through the control cylinder, and then make first friction pulley drive the rotation of second friction pulley, and the rotation of second friction pulley can drive the pivot and rotate, can make the pivot rotate and can drive the crankshaft rotation through a pair of intermeshing's gear connection between pivot and the crankshaft, when the connecting rod axle of crankshaft rotates to the low level end from the high level end, can drive the polygon prism and descend, and then drive the upper die and push down through the cooperation of guide way and guide block, in order to realize the punching press of stamping workpiece.

As a further improvement, be provided with in the frame and be used for the cover to close the first protection casing of flywheel and action wheel, still be provided with in the frame and be used for the cover to close the second protection casing of first friction pulley and second friction pulley.

By adopting the technical scheme, the first protective cover is additionally arranged to cover the driving wheel and the flywheel, so that the injury of personnel caused by mistaken collision is reduced, and the safety is improved; the second protective cover is additionally arranged, so that impurity and debris can be reduced to fall onto the clutch mechanism, and the first friction wheel and the second friction wheel are protected.

To sum up, the utility model discloses following beneficial effect has:

1. the driving mechanism drives the second friction wheel to be abutted against and separated from the first friction wheel, so that the stamping of the upper pressing die is realized, and the clutch mechanism is simple in structure and easy to maintain;

2. the shifting fork and the limiting groove are matched so that the second friction wheel can rotate in the circumferential direction and keep relatively fixed on the axis of the rotating shaft;

3. the rotating shaft is connected with the crankshaft through a pair of gears meshed with each other in a transmission mode, so that the rotating speed of the crankshaft is reduced, the stamping speed of the upper pressing die is further reduced, and the working process of the press machine is more stable.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the embodiment of the present invention with the first protective cover removed;

fig. 3 is a cross-sectional view of an embodiment of the invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic view of the assembly relationship between the rotating shaft and the second friction wheel, the second friction wheel and the shifting fork in the embodiment of the present invention.

In the figure: 1. a base; 2. a frame; 3. a crankshaft; 4. a transmission mechanism; 401. a polygonal prism; 402. a connecting rod; 403. a guide block; 5. a flywheel; 6. a rotating shaft; 7. a first friction wheel; 8. a second friction wheel; 9. a cylinder; 10. a limiting groove; 11. a shifting fork; 1101. a push rod; 12. a sliding groove; 13. a sliding block; 14. a guide groove; 15. a gear; 16. a drive motor; 17. a driving wheel; 18. a belt; 19. a first shield; 20. a second shield; 21. pressing the die; 22. and (5) pressing the die.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A precision press, as shown in fig. 1 and 2, comprises a base 1, a frame 2 fixedly mounted on the base 1, and a flywheel 5 rotatably mounted on the frame 2. Wherein the flywheel 5 is rotatably mounted on one side of the frame 2, in the embodiment, as shown in fig. 1, the flywheel 5 is rotatably mounted on the right side of the frame 2, and in other embodiments, the flywheel 5 is rotatably mounted on the left side of the frame 2. The frame 2 is further provided with a driving motor 16 for driving the flywheel 5 to rotate, an output shaft of the driving motor 16 is fixedly sleeved with a driving wheel 17, and the driving wheel 17 and the flywheel 5 are driven by a belt 18, in this embodiment, the belt 18 is preferably a v-belt 18. In addition, a first protective cover 19 for covering the flywheel 5 and the driving wheel 17 is further mounted on the frame 2, and the first protective cover 19 is fixed on the frame 2 through bolts.

Meanwhile, as shown in fig. 3 and 4, the precision press further includes an upper die 21 mounted on the frame 2, a crankshaft 3, a transmission mechanism 4, a rotary shaft 6, and a clutch mechanism. The clutch mechanism is arranged on one side of the flywheel 5 and is connected with a wheel shaft of the flywheel 5, and in the embodiment, the clutch mechanism is positioned on the left side of the flywheel 5; the rotating shaft 6 is rotatably arranged on the frame 2 along the horizontal direction, the rotating shaft 6 is connected with the left side of the clutch mechanism, and the axis of the rotating shaft 6 is superposed with the axis of the wheel shaft of the flywheel 5; the crankshaft 3 is rotatably arranged on the frame 2 along the horizontal direction, and the crankshaft 3 is positioned on one side of the clutch mechanism, which is far away from the flywheel 5; the axis of the main shaft of the crankshaft 3 is staggered with the axis of the rotating shaft 6, the crankshaft 3 is in transmission connection with the rotating shaft 6 through a pair of gears 15 which are meshed with each other, one gear 15 is sleeved on the rotating shaft 6, and the other gear is sleeved at one end, close to the clutch mechanism, of the crankshaft 3; go up the moulding-die 21 and be connected with bent axle 3 through drive mechanism 4, rotate through drive bent axle 3 and can make drive mechanism 4 drive moulding-die 21 go up and down, and then accomplish the punching process.

Specifically, as shown in fig. 3 and 4, the clutch mechanism includes two first friction wheels 7 and a second friction wheel 8 which are disposed opposite to each other. The first friction wheel 7 is fixedly sleeved on the wheel shaft of the flywheel 5, and the second friction wheel 8 is rotatably arranged on the frame 2 through the rotating shaft 6; the second friction wheel 8 can move along the axial direction of the rotating shaft 6 and is kept relatively fixed with the rotating shaft 6 in the circumferential direction;

specifically, as shown in fig. 1 and 5, a sliding groove 12 is formed in the side wall of the rotating shaft 6 along the axial direction of the rotating shaft 6, and a sliding block 13 connected to the sliding groove 12 in a sliding manner is disposed on the second friction wheel 8. The second friction wheel 8 can move along the axial direction of the rotating shaft 6 through the matching of the sliding groove 12 and the sliding block 13; meanwhile, when the second friction wheel 8 is driven to rotate, the rotating shaft 6 and the second friction wheel 8 can be driven to rotate synchronously. In order to reduce the possibility of foreign debris falling onto the clutch mechanism, which could lead to damage to the clutch mechanism, a second protective cover 20 is provided on the frame 2 for covering the first friction wheel 7 and the second friction wheel 8.

Further, as shown in fig. 3 and 4, the clutch mechanism further includes a driving mechanism for driving the second friction wheel 8 to move to the first position and the second position along the axis of the rotating shaft 6; when the second friction wheel 8 moves to the first position, the first friction wheel 7 drives the second friction wheel 8 to rotate, and when the second friction wheel 8 moves to the second position, the first friction wheel 7 is separated from the second friction wheel 8. When the second friction wheel 8 moves to the first position, the crankshaft 3 is driven by the second friction wheel 8 to rotate, and the upper pressing die 21 is driven to lift through the transmission mechanism 4 when the crankshaft rotates, so that the process of punching processing is completed.

Specifically, as shown in fig. 3 and 5, the driving mechanism includes a cylinder 9 horizontally installed on the frame 2, and meanwhile, a limiting groove 10 is circumferentially opened on a side wall of the second friction wheel 8, a shifting fork 11 in a ring shape is arranged in the limiting groove 10, the shifting fork 11 is rotatably connected with the second friction wheel 8 through the limiting groove 10, a push rod 1101 is fixedly connected to the shifting fork 11, and the push rod 1101 is fixedly connected with a piston rod of the cylinder 9. The shifting fork 11 is driven by the cylinder 9 to move along the axis of the rotating shaft 6, and the second friction wheel 8 can be driven to move to the first position or the second position along the axis direction of the rotating shaft 6 at the same time. When the cylinder 9 drives the second friction wheel 8 to move to the first position, the second friction wheel 8 is tightly abutted against the first friction wheel 7, so that the first friction wheel 7 can drive the second friction wheel 8 to rotate when rotating; when the air cylinder 9 drives the second friction wheel 8 to move to the second position, the second friction wheel 8 is separated from the first friction wheel 7, so that the first friction wheel 7 cannot drive the second friction wheel 8 to rotate.

Specifically, as shown in fig. 3 and 4, the transmission mechanism 4 includes a polygonal column 401 that is hollow and fixed on the crankshaft 3, a connecting rod 402 hinged to the bottom of the polygonal column 401, and a guide block 403 hinged to the bottom end of the connecting rod 402, in this embodiment, the polygonal column 401 is a hexagonal column. Two ends of the crankshaft 3 penetrate through two end faces of the hexagonal prism, and the axis of the main shaft of the crankshaft 3 is staggered with the central axis of the hexagonal prism, so that the hexagonal prism can be driven to rotate when the crankshaft 3 is rotated, and a height difference is generated; the upper die 21 is fixedly attached to the bottom surface of the guide block 403. In addition, the frame 2 is provided with a guide groove 14 for the guide block 403 to slide up and down. When the crankshaft 3 is driven to rotate so that the connecting rod shaft of the crankshaft 3 moves from the high end to the low end, the hexagonal prism can be driven to descend, and then the upper pressing die 21 is driven to descend, so that the upper pressing die 21 punches a stamping part placed on the lower pressing die 22, and when the low-high end of the connecting rod shaft of the crankshaft 3 moves to the high end, the upper pressing die 21 ascends, and then the stamping process is completed; the cooperation of the guide groove 14 and the guide block 403 enables the upper die 21 to be kept vertically pressed down while the crankshaft 3 is rotated to bring the upper die 21 to be pressed down.

The overall working process is as follows: when the press machine works, the driving motor 16 drives the flywheel 5 to rotate so as to enable the first friction wheel 7 to keep a rotating state, when a stamping part needs to be processed, an operator extends the control cylinder 9 to enable the second friction wheel 8 to move to be abutted against the first friction wheel 7, and further enables the first friction wheel 7 to drive the second friction wheel 8 to rotate, the second friction wheel 8 can drive the rotating shaft 6 to rotate, the rotating shaft 6 and the crankshaft 3 are connected through a pair of gears 15 which are meshed with each other, so that the rotating shaft 6 can rotate to drive the crankshaft 3 to rotate, when a connecting rod shaft of the crankshaft 3 rotates from a high end to a low end, the polygonal column 401 can be driven to descend, the upper pressing die 21 is driven to press downwards through the matching of the guide groove 14 and the guide block 403, the stamping of the stamping part can be realized through the matching of the upper pressing die 21 and the lower pressing die 22, after the stamping, the crankshaft 3 continues to rotate so that the connecting rod shaft of the crankshaft 3 rotates from the low end to the high end, the upper die 21 is raised and the entire punching process is completed.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. A precision press machine comprises a frame (2) and an upper pressing die (21) arranged on the frame (2), and is characterized by further comprising a crankshaft (3), a transmission mechanism (4), a flywheel (5), a rotating shaft (6) and a clutch mechanism;

the flywheel (5) is rotatably arranged on the frame (2);

the clutch mechanism comprises a first friction wheel (7), a second friction wheel (8) and a driving mechanism, the first friction wheel (7) is fixedly sleeved on a wheel shaft of the flywheel (5), the second friction wheel (8) is rotatably arranged on the rack (2) through a rotating shaft (6), the axis of the rotating shaft (6) is overlapped with the axis of the wheel shaft of the flywheel (5), and the second friction wheel (8) can axially move along the rotating shaft (6) and is relatively fixed with the rotating shaft (6) in the circumferential direction; the driving mechanism is used for driving the second friction wheel (8) to move to a first position and a second position; when the friction wheel is in the first position, the first friction wheel (7) drives the second friction wheel (8) to rotate, and when the friction wheel is in the second position, the first friction wheel (7) is separated from the second friction wheel (8);

the crankshaft (3) is rotatably arranged on the rack (2), the crankshaft (3) is driven by the second friction wheel (8) to rotate, and the upper pressing die (21) is driven to lift through the transmission mechanism (4) when the crankshaft (3) rotates.

2. A precision press according to claim 1, characterized in that: the driving mechanism comprises a cylinder (9) horizontally arranged on the rack (2), a limiting groove (10) is formed in the circumferential direction of the side wall of the second friction wheel (8), a shifting fork (11) is arranged in the limiting groove (10), the shifting fork (11) is rotatably connected with the second friction wheel (8), and a piston rod of the cylinder (9) is connected to the shifting fork (11);

the shifting fork (11) is driven by the cylinder (9) to drive the second friction wheel (8) to move along the axis of the rotating shaft (6), and when the second friction wheel (8) moves to a first position, the first friction wheel (7) is abutted to the second friction wheel (8); when the second friction wheel (8) moves to the second position, the first friction wheel (7) is separated from the second friction wheel (8).

3. A precision press according to claim 2, characterized in that: the side wall of the rotating shaft (6) is provided with a sliding groove (12) along the axis direction of the rotating shaft (6), and the second friction wheel (8) is provided with a sliding block (13) which is connected with the sliding groove (12) in a sliding manner.

4. A precision press according to claim 3, characterized in that: the transmission mechanism (4) comprises a polygonal prism body (401) which is arranged in a hollow mode and fixed on the crankshaft (3), a connecting rod (402) hinged to the bottom of the polygonal prism body (401), and a guide block (403) hinged to the bottom end of the connecting rod (402), and a guide groove (14) for the guide block (403) to slide up and down is formed in the rack (2);

two ends of the crankshaft (3) penetrate through two sides of the polygonal column body (401), and when the crankshaft (3) is driven by the second friction wheel (8) to rotate, a connecting rod shaft of the crankshaft (3) can rotate from a high-position end to a low-position end to drive the polygonal column body (401) to descend.

5. A precision press according to claim 4, characterized in that: the axis of pivot (6) and the axis dislocation of the main shaft of bent axle (3), be connected through a pair of intermeshing's gear (15) transmission between bent axle (3) and pivot (6), one of them gear (15) cover is located pivot (6) are kept away from the one end of first friction pulley (7), and another cover is located bent axle (3) are close to the one end of second friction pulley (8).

6. A precision press according to claim 1, characterized in that: the driving device is characterized in that a driving motor (16) used for driving the flywheel (5) to rotate is arranged on the rack (2), an driving wheel (17) is sleeved on an output shaft of the driving motor (16), and the driving wheel (17) and the flywheel (5) are driven through a belt (18).

7. A precision press according to claim 6, characterized in that: the flywheel driving device is characterized in that a first protective cover (19) used for covering the flywheel (5) and the driving wheel (17) is arranged on the rack (2), and a second protective cover (20) used for covering the first friction wheel (7) and the second friction wheel (8) is further arranged on the rack (2).