CN112620474B

CN112620474B - Double-acting stamping movement mechanism

Info

Publication number: CN112620474B
Application number: CN202011400227.7A
Authority: CN
Inventors: 罗恒; 丑西平; 李会杰; 孙宏波; 杨振宇; 侯春林
Original assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Current assignee: Chengdu Aerospace Long March Machinery Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2023-06-30
Anticipated expiration: 2040-12-01
Also published as: CN112620474A

Abstract

The invention discloses a double-acting stamping motion mechanism, which comprises a guide rail and a double-acting stamping motion mechanism, wherein a supporting seat is arranged at the top of the guide rail, a groove cam is arranged at one side of the top of the supporting seat, a roller bearing is arranged at one side or inside the outer surface of the groove cam, a spline shaft is arranged at one side of the top of the groove cam, a driving shaft is arranged at one side of the spline shaft, a workpiece bearing platform cannot be effectively independent of a stamping motion system when the existing device in the market is used, a driving mechanism is not arranged, the workpiece bearing platform cannot be subjected to film pasting and compaction, an additional power mechanism is used for driving the bearing platform when the working conditions of film pasting and compaction are needed, the problem that the device cannot be independent of the stamping motion system is solved, and the problem that the device needs an additional power mechanism for bearing platform is solved.

Description

Double-acting stamping movement mechanism

Technical Field

The invention belongs to the technical field of double-acting stamping motion on blanking equipment, and particularly relates to a double-acting stamping motion mechanism.

Background

The stamping motion mechanism is mainly applied to various stamping machines, and the main working principle is that circular motion is converted into linear motion, a main motor drives a flywheel, and a clutch drives gears, crankshafts (or eccentric wheels), connecting rods and the like to operate so as to achieve the linear motion of a sliding block. The sliding block can be divided into single-acting, double-acting, and other punching machines according to the movement mode of the sliding block. In a traditional single-action punch, a driving device rotates for one circle to drive one punching slide block to do one-time reciprocating motion, and a double-action punch driving device rotates for each circle to drive two slide blocks to do one-time reciprocating motion.

The patent of publication No. CN206702030U discloses a reverse eccentric crankshaft punch press, including bent axle, first slider and second slider, be equipped with first eccentric part and second eccentric part on the main shaft, and two eccentric parts dislocation 180 are arranged, and this patent adopts reverse double eccentric structure, makes the punch press accomplish twice work in a duty cycle. The patent of publication No. CN208495527U discloses a double acting punch press, including many eccentric crankshafts, be provided with first eccentric part and third eccentric part along its axial symmetry on many eccentric crankshafts, be provided with the bottom third eccentric part in the middle, this patent can realize blanking and tensile two processes at same station.

According to the technology, the reverse eccentric crankshaft punching machine can realize single-cycle twice punching, the double-acting punching machine can realize two working procedures of punching and stretching at the same station, a workpiece carrying platform of the two mechanisms is independent outside a punching motion system, a driving mechanism is not arranged, film pasting and compaction can not be carried out on a workpiece, and when the working conditions of film pasting and compaction are needed, an additional power mechanism is often adopted to drive the carrying platform.

The invention adopts the same driving system, and can realize two movements of quick die attachment and stamping of stamping equipment.

Disclosure of Invention

The invention aims to provide a double-acting stamping motion mechanism, which aims to solve the problems that in the prior art, a workpiece carrying platform of the two mechanisms is independent outside a stamping motion system, a driving mechanism is not arranged, a workpiece can not be subjected to film pasting and compaction, and when the working conditions of film pasting and compaction are needed, an additional power mechanism is often adopted to drive the carrying platform.

In order to achieve the above purpose, the present invention provides the following technical solutions: the double-acting stamping motion mechanism comprises a guide rail and a double-acting stamping motion mechanism, wherein a supporting seat is arranged at the top of the guide rail, a groove cam is arranged on one side of the top of the supporting seat, a roller bearing is arranged on one side or the inside of the outer surface of the groove cam, a spline shaft is arranged on one side of the top of the groove cam, and a driving shaft is arranged on one side of the spline shaft.

Preferably, a box cover is arranged on one side of the driving shaft, and an +' shaped connecting rod is arranged in the middle or at the top of the box cover.

Preferably, a pin is arranged on one side of the ++shaped connecting rod, and a sliding seat is arranged at the bottom of the pin.

Preferably, a stamping sliding block is arranged on one side of the top or one side of the outer surface of the sliding seat, and a stamping shaft rod is arranged on one side or the bottom of the stamping sliding block.

Preferably, the double-acting stamping motion mechanism comprises a driving shaft, and the driving shaft and the double-acting stamping motion mechanism are simultaneously provided with an eccentric wheel and a groove concave wheel.

Preferably, the inner and outer contours of the outer wall of the concave groove wheel are limited by two fixed roller bearings in the direction of linear motion, and the contour of the outer wall of the concave groove wheel consists of two sections of circular arcs and a warp curve connecting the two sections of circular arcs.

Preferably, the outer surface of the driving shaft is provided with an eccentric wheel, and one end of the eccentric wheel is provided with a sliding shaft.

Preferably, the eccentricity of the eccentric wheel is 2A, and the eccentric wheel drives the sliding shaft to reciprocate in a linear motion with the stroke of 2A.

Compared with the prior art, the invention has the beneficial effects that:

1. the existing device in the current market often can not be used effectively to independently place the workpiece bearing platform outside the stamping motion system, and a driving mechanism is not provided, so that the workpiece can not be subjected to film pasting and compaction, and when the workpiece needs to be subjected to film pasting and compaction working conditions, an additional power mechanism is often adopted to drive the bearing platform, and the device not only avoids the problem that the device can not be used independently of the stamping motion system, but also solves the problem that the device needs an additional power mechanism to bear the bearing platform.

Drawings

FIG. 1 is a schematic view of a double-action ram motion mechanism of the present invention;

FIG. 2 is a grooved cam outer wall profile of the present invention;

fig. 3 is a schematic view of the stamping process position of the present invention.

In the figure: 1. a guide rail; 2. a support base; 3. a grooved cam; 4. a roller bearing; 5. a spline shaft; 6. a drive shaft; 7. a case cover; 8. a infinity-shaped connecting rod; 9. a pin; 10. a sliding seat; 11. stamping a sliding block; 12. and (5) stamping the shaft lever.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, the present invention provides a technical solution: the double-acting stamping motion mechanism comprises a guide rail 1 and a double-acting stamping motion mechanism, wherein a supporting seat 2 is arranged at the top of the guide rail 1, a groove cam 3 is arranged on one side of the top of the supporting seat 2, a roller bearing 4 is arranged on one side or the inside of the outer surface of the groove cam 3, a spline shaft 5 is arranged on one side of the top of the groove cam 3, and a driving shaft 6 is arranged on one side of the spline shaft 5

In this embodiment, by arranging this, the device as a whole can be used effectively.

Specifically, a cover 7 is provided on one side of the drive shaft 6, one side or the top of the box cover 7 is provided with an +' shaped connecting rod 8.

Specifically, a pin 9 is provided on one side of the infinity-shaped connecting rod 8, and a sliding seat 10 is provided on one side of the inner cavity of the pin 9.

Specifically, a punching slider 11 is provided on the top side or the outer surface side of the slide base 10, and a punching shaft 12 is provided on one side or the bottom of the punching slider 11.

Specifically, the double-acting stamping motion mechanism comprises a driving shaft 6, and the driving shaft 6 and the double-acting stamping motion mechanism are simultaneously designed by an eccentric wheel and a groove concave wheel 3.

In the embodiment, the eccentric wheel and the groove cam structure are simultaneously designed on the driving shaft, so that the same rotary motion can be converted into two reciprocating linear motions with logic relationship, and the high-speed die sticking compaction and blanking in the stamping motion are realized.

Specifically, the inner and outer contours of the outer wall of the grooved cam 3 are limited in displacement by two fixed roller bearings 4 in the direction of the linear fish hole, and the contour line of the outer wall of the grooved cam 3 consists of two sections of circular arcs and a warp curve connecting the two sections of circular arcs.

In this embodiment, when the grooved cam 3 rotates with the drive shaft 6, the outer wall is fixed at the limit position of the two roller bearings 4, and the drive shaft 6 reciprocates linearly.

Specifically, the outer surface of the driving shaft 6 is provided with an eccentric wheel, and one end of the eccentric wheel is provided with a sliding shaft.

In this embodiment, the difference H between the radii of two circular arcs is the lift distance of the cam, and the radius-changing curve equation is a sine function equation, so that when the driving shaft 6 rotates, the grooved cam 3 structure will make the driving shaft 6 reciprocate linearly periodically, forming H, and the movement speed is stopped from slow to fast to slow, and finally.

Specifically, the eccentricity of the eccentric wheel is A, and the eccentric wheel drives the sliding shaft to reciprocate in a linear motion with a stroke of 2A.

In the embodiment, the large arc center line of the groove cam 3 and the eccentric direction of the eccentric wheel are designed to be zero degrees, so when the sliding shaft driven by the eccentric wheel moves to the farthest end, the stamping slide block 11 driven by the groove cam 3 is positioned at the nearest end, otherwise, when the sliding shaft moves to the nearest end, the stamping slide block 11 is positioned at the farthest end, the two movements move in opposite directions to form stamping action, the stamping slide block 11 is designed to have small movement stroke, and the near end and the far end have pause time for installing grooves to compress and withdraw the film;

specifically, the stamping slide block is used for installing the female die, and the stamping shaft lever is used for installing the male die.

In the embodiment, the moving stroke designed by the sliding shaft is rapid, the moving mode is compound movement, the moving displacement relative to the processed workpiece is 2A-H, and the moving stroke is used for installing the male die to carry out main blanking movement.

As shown in figure 1, a driving shaft 6 of the double-acting stamping mechanism of the invention is an eccentric shaft, an eccentric circle is positioned at the middle-lower eccentric distance A of the illustrated position, the eccentric circle is connected with a sliding seat 10 through a bearing, an infinity-shaped connecting rod 8, a knuckle bearing and a pin 9, the sliding seat 10 is connected with four stamping shaft rods 12, and the stamping shaft rods 12 penetrate through guide holes in the stamping sliding blocks 11 to extend to the front end of the mechanism for installing a stamping head or a male die. The eccentric circle department is equipped with supporting seat 2 and supports drive shaft 6 fixedly through the bearing about, and supporting seat 2 installs on case lid 7, and case lid 7 is connected with punching press slider 11, and three parts are fixed as an organic wholely, and punching press slider 11 front end designs the interface that installs the die. The upper end of the driving shaft 6 is connected with the spline shaft 5 through a spline, the grooved cam 3 is fixed on the spline shaft 5, and the grooved cam 3 rotates along with the driving shaft 6. The inner and outer contours of the outer wall of the grooved cam 3 are provided with a pair of fixed roller bearings 4, and the roller bearings 4 are tangent to the inner and outer walls of the grooved cam to limit the displacement of the grooved cam in the linear motion direction. When the driving shaft 6 rotates, the groove cam 3 is limited by the roller bearing 4 on the outer wall of the groove cam, so that the driving shaft 6 can reciprocate, the whole body is driven to reciprocate on the guide rail 1, meanwhile, the eccentric circle rotates to drive the stamping shaft rod 12 to reciprocate the outer wall contour line of the groove cam 3, as shown in fig. 2, and the groove cam consists of two sections of circular arcs R and R and a warp curve connecting the two sections of circular arcs, wherein the angle of the circular arc section is 120 degrees, and the angle of the warp curve is 60 degrees. The rise distance h= =r-R of the cam, i.e. the motion stroke, and the reducing curve equation is the sine function equation rx=r+ (R-R)/2 (1+sin (3 θ -90 °)). The center line V point of the large arc of the contour line is consistent with the eccentric direction of the eccentric wheel, the angle is zero, and the structural state is shown in fig. 1, and the angle is marked as 0 degree at the moment. Therefore, the stamping slide block 11 and the stamping shaft rod 12 move in opposite directions, the design stroke of the stamping slide block 11 is small, the movement speed is low, and the near end and the far end have stop time, so that the stamping slide block is used for installing a female die to realize die sticking and pressing in the stamping process, the design stroke of the stamping shaft rod 12 is large, the movement speed block is continuous and has no stop, the stamping slide block 11 is used for installing a stamping head or a male die to perform main blanking movement, the stamping slide block 11 driven by the grooved cam 3 is static at the far end at 300-60 degrees shown in fig. 2, the workpiece is closely pressed at the function equation speed at 60-120 degrees, the stamping head is tightly stuck and static with the workpiece, and the stamping head is blanked at 240-300 degrees and is far away from the workpiece. As shown in fig. 3, the workpiece is fixed, and the female die and the punching head are at an open position at 0 DEG, and the distance is the farthest; when the angle is 120 degrees, the female die compresses the workpiece, and the stamping head is close to the workpiece; when the angle is 180 degrees, the concave die and the stamping head are closed, and the distance is nearest; the 240 ° position is identical to the 120 ° position.

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

Claims

1. The double-acting stamping motion mechanism comprises a guide rail (1) and the double-acting stamping motion mechanism and is characterized in that: the top of the guide rail (1) is provided with a supporting seat (2); a groove cam (3) is arranged on one side of the top of the supporting seat (2), a spline shaft (5) is arranged on one side of the top of the groove cam (3), and a driving shaft (6) is arranged on one side of the spline shaft (5); the upper end of the driving shaft (6) is connected with the spline shaft (5) through a spline, the groove cam (3) is fixed on the spline shaft (5), the groove cam (3) rotates along with the driving shaft (6), one side or the inside of the outer surface of the groove cam (3) is provided with a roller bearing (4), and the roller bearing (4) is tangent with the inner wall and the outer wall of the roller bearing to limit the displacement of the roller bearing in the linear motion direction;

the driving shaft (6) is an eccentric shaft, the eccentric circle is positioned at the middle lower part and is connected with the sliding seat (10) through a bearing, the infinity-shaped connecting rod (8), a knuckle bearing and a pin (9), a punching slide block (11) is arranged at one side of the top or one side of the outer surface of the sliding seat (10), a punching shaft rod (12) is arranged at one side or the bottom of the punching slide block (11), the sliding seat (10) is connected with the four punching shaft rods (12), and the punching shaft rod (12) penetrates through guide holes in the punching slide block (11) to extend to the front end of the mechanism for installing a punching head;

the eccentric circle and the lower part are provided with supporting seats (2) which support and fix a driving shaft (6) through bearings, one side of the driving shaft (6) is provided with a box cover (7), the supporting seats 2 are arranged on the box cover (7), the box cover (7) is connected with a stamping sliding block (11), the three parts are fixed into a whole, and the front end of the stamping sliding block (11) is provided with an interface for installing a female die;

when the driving shaft (6) rotates, the groove cam (3) can lead the driving shaft (6) to do reciprocating motion by the outer wall of the groove cam being limited by the roller bearing (4), thereby driving the whole body to do reciprocating motion on the guide rail (1), and simultaneously, the eccentric circle rotates to drive the stamping shaft lever (12) to do another reciprocating motion;

the contour line of the outer wall of the groove cam (3) consists of two sections of circular arcs R and R and a warp curve connecting the two sections of circular arcs, the angle of the circular arc section is 120 degrees, and the angle of the warp curve is 60 degrees; the rise distance H=R-R of the cam, namely the motion stroke, and the reducing curve equation is a sine function equation RX=r+ (R-R)/2 (1+sin (3 theta-90 degrees));

the V point of the large arc center line of the contour line is consistent with the eccentric direction of the eccentric circle, and the angle is zero; the stamping slide block (11) is small in design stroke, low in movement speed and provided with stop time at the near end and the far end, is used for installing a female die, realizing die sticking and compaction in the stamping process, is large in design stroke of the stamping shaft lever (12), is provided with a movement speed block, is continuously and continuously free of stop, is used for installing a stamping head, performs main blanking movement, and is characterized in that the stamping slide block (11) driven by the groove cam (3) is at the far end at 300-60 degrees and is close to a workpiece for compaction at the speed of a function equation at 60-120 degrees, is close to the workpiece for compaction at 120-240 degrees, is still at rest, and is blanked at 240-300 degrees and is far away from the workpiece; when the workpiece is fixed, the female die and the punching head are positioned at an opening position at the angle of 0 DEG, and the distance is the farthest; when the angle is 120 degrees, the female die compresses the workpiece, and the stamping head is close to the workpiece; when the angle is 180 degrees, the concave die and the stamping head are closed, and the distance is nearest; the 240 ° position is identical to the 120 ° position.

2. A double-acting ram motion mechanism according to claim 1, wherein: the +'s-shaped connecting rod (8) is arranged at a slot in the middle of the bottom or the top of the box cover (7).

3. A double-acting ram motion mechanism according to claim 2, wherein: the pin (9) is arranged on one side of the ++shaped connecting rod (8), and the sliding seat (10) is arranged in the inner cavity of the pin (9).