CN112317613A

CN112317613A - Multi-station stamping die

Info

Publication number: CN112317613A
Application number: CN202010857723.9A
Authority: CN
Inventors: 叶靖克; 李涛
Original assignee: Zhejiang Taixin Electric Appliance Co ltd
Current assignee: Zhejiang Taixin Electric Appliance Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-02-05
Anticipated expiration: 2040-08-24
Also published as: CN112317613B

Abstract

The application relates to a multi-station stamping die, which comprises an upper template, a lower template and a feeding mechanism; the upper template and the lower template are provided with at least two punching areas; the feeding mechanism comprises a plurality of positioning columns and a feeding head; the positioning columns are divided into two rows, and the two rows of positioning columns are arranged on two sides of the stamping area along the feeding direction; the feeding head comprises a rotating sleeve which is rotatably arranged at the upper end of the positioning column; a plurality of locking needles which are used for penetrating into positioning holes at two sides of the material belt are uniformly arranged on the rotating sleeve along the circumferential direction; and the lower template is provided with a driving device for driving the rotating sleeve to rotate. The positioning columns on the two sides are used for guiding and limiting the material belt, so that the stability of the material belt in the conveying process is enhanced; and the cover rotates and can make peripheral lock needle penetrate the locating hole in proper order to drive the material area along with rotating and advance, thereby make the work piece in the material area can accurately move to each punching press station, and with the drift alignment, improve the accuracy nature of punching press.

Description

Multi-station stamping die

Technical Field

The application relates to the technical field of stamping dies, in particular to a multi-station stamping die.

Background

The automatic stamping equipment in the related art adopts a mode of unwinding at one end and winding at one end to convey a material belt, and when the material belt passes through a stamping station between an upper die and a lower die, a punch on the die is used for stamping a workpiece on the material belt. A plurality of locating holes are evenly formed in the two sides of the material belt along the length direction, a plurality of locating nails are evenly arranged on the square reel and the winding disc along the circumferential direction, and the locating nails penetrate through the locating holes in the winding process, so that the winding and unwinding length accuracy is improved.

The both ends in control material area are carried, lead to the material area easily to be difficult to aim at with the drift when punching press station, especially when the punching press step or the punching press station that need pass through are more, lead to the transport stroke in material area longer, and the oscillatingly from top to bottom and lateral shifting in material area all can influence the accuracy nature of punching press.

Disclosure of Invention

To the not enough of correlation technique existence, the application provides a multistation stamping die, has the effect that reinforcing material area carried stability.

The application provides a multistation stamping die adopts following technical scheme:

a multi-station stamping die comprises an upper template and a lower template; the lower template is provided with a feeding mechanism; at least two punching areas are sequentially arranged on the upper template and the lower template along the feeding direction, and the distance between every two adjacent punching areas is equal; the feeding mechanism comprises a plurality of positioning columns and a feeding head arranged on the positioning columns; the positioning columns are divided into two rows, the two rows of positioning columns are arranged on two sides of the stamping area along the feeding direction, and the distance between the positioning columns on the two sides is equal to the width of the material belt; the feeding head comprises a rotating sleeve which is rotatably arranged at the upper end of the positioning column, and the rotating axis of the rotating sleeve is perpendicular to the conveying direction of the material belt; a plurality of locking needles which are used for penetrating into positioning holes at two sides of the material belt are uniformly arranged on the rotating sleeve along the circumferential direction; and the lower template is provided with a driving device for driving the rotating sleeve to rotate.

By adopting the technical scheme, the positioning columns on the two sides are utilized to guide and limit the material belt, so that the stability of the material belt in the conveying process is enhanced; and the cover rotates and can make peripheral lock needle penetrate the locating hole in proper order to drive the material area along with rotating and advance, thereby make the work piece in the material area can accurately move to each punching press station, and with the drift alignment, improve the accuracy nature of punching press.

Preferably, the rotating sleeve and the positioning column are arranged coaxially; a plurality of accommodating holes are uniformly formed in the upper end of the rotating sleeve along the circumferential direction, and the locking pins are slidably arranged in the accommodating holes in a one-to-one correspondence manner; a circle of rotating cavity is formed between the lower part of the accommodating hole and the upper end of the positioning column at intervals; when the lower end of the lock needle abuts against the upper end face of the positioning column, the upper end of the lock needle is positioned in the accommodating hole; one side that the reference column upper end is close to the punching press district is provided with the cam piece, be arc transition between the up end of the both ends of cam piece and reference column and link up.

Through adopting above-mentioned technical scheme, utilize the rotation cover that rotates the setting to drive all lock needles along circumferential motion, and when lock needle moved to cam piece department, the lock needle upwards worn out from the upper end of accomodating the hole along the up end of cam piece to penetrate the spacing downthehole of material area side, and spacing hole can be designed into towards the waist shape hole of the regional extension of punching press, or be greater than the diameter of lock needle, thereby utilize the circumferential motion of lock needle to drive the material area and advance.

Preferably, the driving device comprises a driving rod arranged at the lower end of the upper template, a pawl rotationally connected to the end part of the driving rod, and a ratchet wheel arranged on the lower template, a pressure spring for pressing the pawl to the ratchet wheel is arranged on the driving rod, and a linkage assembly is arranged between the ratchet wheel and the rotating sleeve; when the upper template is pressed downwards, the pawl and the ratchet wheel move relatively; when the upper die plate rises, the pawl drives the ratchet wheel to rotate.

By adopting the technical scheme, the driving rod is driven to reciprocate along the vertical direction by utilizing the lifting punching of the upper template, and when the pawl moves downwards under the driving of the driving rod, the ratchet wheel is not moved, so that the phenomenon that the punching precision is influenced because the material belt is displaced in the punching process is avoided; when the workpiece on the material belt is punched, the upper die plate rises, the pawl drives the ratchet wheel to rotate, so that the material belt is driven by the linkage assembly to move forward to a station for the next punching process, a power element is not required to be additionally arranged, and energy is saved.

Preferably, a plurality of pawls are uniformly arranged on the driving rod along the vertical direction; and one side of the driving rod facing the ratchet wheel is provided with a limiting block for limiting the rotation angle of the pawl.

By adopting the technical scheme, the stroke distance of the matching of the driving rod and the ratchet wheel is increased by utilizing the plurality of pawls, so that the material belt can be advanced to the next station by utilizing the one-time lifting process of the upper template; and the limiting block makes the pawl moving to the lower part of the ratchet wheel be accurately clamped into the pushing groove of the ratchet wheel when the pawl ascends.

Preferably, the positioning column is arranged in a hollow manner, a connecting rod which downwards penetrates through the positioning column is arranged on the rotating sleeve along the axial lead, and a linkage gear is arranged at the lower end of the connecting rod; the linkage assembly comprises a primary transmission rod arranged on the ratchet wheel, a secondary transmission rod linked with the primary transmission rod, and a plurality of tertiary transmission rods linked with the secondary transmission rod and corresponding to the positioning columns one by one; and a linkage part linked with the linkage gear is arranged at the end part of the three-stage transmission rod.

By adopting the technical scheme, the rotation of the ratchet wheel is transmitted to all the positioning columns by the first-stage transmission rod, the second-stage transmission rod and the third-stage transmission rod, and then the linkage gear and the linkage piece are linked to drive the connecting rod and the rotating sleeve to rotate, so that the uniform dispersion and transmission of power are realized.

Preferably, the conveying height of the feeding head is higher than the working surface height of the stamping area; a punching groove is formed in the lower template at the bottom of the positioning column, and the lower end of the positioning column is arranged in the punching groove in a sliding mode along the vertical direction; and a return spring is arranged between the bottom of the positioning column and the stamping groove.

By adopting the technical scheme, the workpiece on the material belt is not hindered by the punching head when moving between the punching areas; when the upper template descends to perform stamping, the positioning column moves towards the inside of the stamping groove under the pressure action of the upper template and drives the material belt to descend synchronously, so that stamping is realized; when the upper template is lifted, the positioning column is lifted again under the action of the return spring, so that the workpiece on the material belt is separated from the stamping head, and the workpiece can move to the next stamping station conveniently.

Preferably, the connecting rod is arranged on the rotating sleeve in a sliding manner along the axis direction; the feeding head also comprises a pressure bearing head arranged at the upper end of the connecting rod, and the lower end of the pressure bearing head is provided with a abdicating hole for the lock needle to penetrate upwards; the middle part of connecting rod is provided with the round chimb, the chimb upwards with the bottom butt of reference column, reset spring upwards extrudees on the chimb.

Through adopting above-mentioned technical scheme, when the cope match-plate pattern pushed down fast, the bearing head was close to relatively towards the cover direction of rotating under the impact of cope match-plate pattern to can utilize bearing head and rotate the cover and extrude the material area between the two, realize spacing and stable effect to the material area.

Preferably, the linkage gear and the linkage member are two bevel gears which are engaged with each other, and the bevel gear surface of the linkage gear is engaged with the linkage member in an inclined upward direction.

By adopting the technical scheme, the clutch effect is realized by utilizing the two bevel gears; when the upper die plate presses the connecting rod to move downwards, the linkage gear is driven to be separated from the linkage part, so that the material belt cannot be influenced by the movement of the upper die plate to deviate.

To sum up, the beneficial effect of this application is:

1. the positioning columns on the two sides are used for guiding and limiting the material belt, so that the stability of the material belt in the conveying process is enhanced; the rotating sleeve rotates to enable the peripheral lock needles to sequentially penetrate into the positioning holes and drive the material belt to advance along with the rotation, so that the workpiece on the material belt can accurately move to each punching station and is aligned with the punch, and the punching accuracy is improved;

2. the driving rod is driven to reciprocate along the vertical direction by utilizing the lifting punching of the upper template, and when the pawl moves downwards under the driving of the driving rod, the ratchet wheel is not moved, so that the phenomenon that the punching precision is influenced because the material belt is displaced in the punching process is avoided; when the workpiece on the material belt is punched, the upper die plate rises, the pawl drives the ratchet wheel to rotate, so that the material belt is driven by the linkage assembly to move forward to a station for the next punching process, a power element is not required to be additionally arranged, and energy is saved.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic illustration of the explosive structure of the present application;

FIG. 3 is a schematic view of a mating structure of a feeding head and a material strip of the present application;

FIG. 4 is a schematic view of the present application showing the internal cross-section of the feed mechanism;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

FIG. 6 is an enlarged schematic view at B in FIG. 4;

FIG. 7 is a schematic structural view of a drive assembly and linkage assembly of the present application;

fig. 8 is an enlarged schematic view at C in fig. 7.

Description of reference numerals: 1. mounting a template; 2. a lower template; 21. punching the area; 22. punching a groove; 23. a return spring; 3. a feeding mechanism; 31. a positioning column; 311. a cam block; 32. a feeding head; 321. rotating the sleeve; 3211. an accommodation hole; 3212. a rotation chamber; 322. locking the needle; 323. a pressure-bearing head; 3231. a hole of abdication; 324. a connecting rod; 3241. a linkage gear; 3242. a convex edge; 325. a conveying trough; 4. a drive device; 41. a drive rod; 411. a limiting block; 42. a pawl; 43. a ratchet wheel; 44. a linkage assembly; 441. a primary transmission rod; 442. a secondary transmission rod; 443. a third-stage transmission rod; 444. a linkage member; 5. a material belt; 51. and a limiting hole.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment discloses a multistation stamping die, as shown in fig. 1 and 2, including cope match-plate pattern 1 and lower bolster 2, set gradually two at least punching press districts 21, three punching press district 21 in this embodiment, three punching press district 21 interval each other is equal between cope match-plate pattern 1 and the lower bolster 2 along the pay-off direction. The lower template 2 is provided with a feeding mechanism 3, and the feeding mechanism 3 comprises a plurality of positioning columns 31 and feeding heads 32 arranged on the positioning columns 31; the reference column 31 is divided into two, and two reference columns 31 are arranged in the both sides in punching press district 21 along the pay-off direction, and the interval between the reference column 31 of both sides equals the width in material area 5, utilizes the reference column 31 of both sides to play direction and limiting displacement to material area 5, and the delivery head 32 has the effect in propelling movement material area 5 to can utilize reference column 31 to strengthen the stability in the material area 5 transportation process.

As shown in fig. 3, the feeding head 32 includes a rotating sleeve 321, a connecting rod 324 and a pressure-bearing head 323. Wherein, the rotating sleeve 321 is rotatably connected to the upper end of the positioning column 31 along the axial lead of the positioning column 31; the connecting rod 324 is slidably arranged in the middle of the rotating sleeve 321 along the axis, and the connecting rod 324 and the rotating sleeve 321 are slidably connected through a pin structure and cannot rotate relatively; the pressure-bearing head 323 is fixedly connected to the upper end of the connecting rod 324, and a ring-shaped conveying groove 325 is formed between the lower end of the pressure-bearing head 323 and the upper end of the rotating sleeve 321, and is used for guiding and limiting the side edge of the material strip 5.

As shown in fig. 4 and 5, a plurality of accommodating holes 3211 are uniformly formed in the rotating sleeve 321 along the circumferential direction, and a locking pin 322 is vertically slidably disposed in each accommodating hole 3211; a circle of rotating cavity 3212 is formed between the lower portion of the accommodating hole 3211 and the upper end of the positioning column 31 at an interval, and when the lower end of the lock pin 322 passes through the rotating cavity 3212 and abuts against the upper end surface of the positioning column 31, the upper end of the lock pin 322 is flush with the upper end opening of the accommodating hole 3211. The upper end of the positioning column 31 is integrally formed with an upward convex cam block 311 at one side close to the stamping area 21 in the rotating cavity 3212, the upper end of the cam block 311 is arc-shaped, and two ends of the cam block 311 are in arc-shaped transition connection with the upper end surface of the positioning column 31. Utilize the cover 321 that rotates the setting to drive all lock needles 322 along the circumferential motion, and when lock needle 322 moved to cam piece 311 department, lock needle 322 upwards worn out from the upper end of accommodating hole 3211 along the upper end of cam piece 311 to penetrate in the spacing hole 51 of strip 5 side, and spacing hole 51 can be designed into the waist shape hole that extends towards punching press district 21, or be greater than the diameter of lock needle 322, thereby can utilize the circumferential motion drive strip 5 of a plurality of adjacent lock needles 322 to advance, make the work piece on strip 5 accurately move to each punching press station, and align with the drift, improve the accuracy nature of punching press.

As shown in fig. 6 and 7, the upper and lower templates 1 and 2 are provided with a driving device 4 for driving the rotating sleeve 321 to rotate. The driving device 4 comprises a driving rod 41 vertically fixed at the lower end of the upper template 1 downwards, a pawl 42 rotatably connected at the lower end of the driving rod 41, and a ratchet wheel 43 rotatably connected on the lower template 2, wherein a plurality of pawls 42 are uniformly arranged along the length direction of the driving rod 41, a compression spring (not shown in the figure) for pressing the pawl 42 to the ratchet wheel 43 is arranged on the driving rod 41, and a limit block 411 (shown in the figure 8) for limiting the rotation angle of the pawl 42 is arranged on one side of the driving rod 41 facing the ratchet wheel 43. The driving rod 41 is driven by the lifting punching of the upper die plate 1 to reciprocate along the vertical direction, when the pawl 42 moves downwards under the driving of the driving rod 41, the ratchet wheel 43 is not driven to rotate, and when the upper die plate 1 rises, the pawl 42 pushes the ratchet wheel 43 to rotate.

As shown in fig. 6 and 7, a linkage gear 3241 is fixed to a lower end of the connecting rod 324, and a linkage assembly 44 is disposed between the ratchet wheel 43 and the linkage gear 3241. The linkage assembly 44 includes a first transmission rod 441 disposed on the ratchet 43, a second transmission rod 442 linked with the first transmission rod 441, and a plurality of third transmission rods 443 linked with the second transmission rod 442, and a linkage member 444 linked with the linkage gear 3241 is disposed at an end of each of the third transmission rods 443. The first-stage transmission rod 441 is transversely arranged in the lower template 2, the second-stage transmission rod 442 extends along the conveying direction of the material belt 5, the three-stage transmission rods 443 are arranged at intervals corresponding to the positioning columns 31 on the two sides one by one, and power transmission is realized through the worm gear and the worm, so that the connecting rod 324 and the rotating sleeve 321 are driven to rotate by the rotation of the ratchet wheel 43, and the uniform dispersion and transmission of power are realized.

As shown in fig. 5 and 6, the feeding height of the feeding head 32 (i.e., the height of the feeding groove 325) is higher than the working surface height of the punching zones 21, so that the work on the strip 5 is not hindered by the punching head when moving between the punching zones 21. And lower bolster 2 is last to be provided with stamping groove 22 in the bottom of reference column 31, and vertical direction sliding connection is followed in stamping groove 22 to the lower extreme of reference column 31, and the middle part of connecting rod 324 is fixed with round chimb 3242, chimb 3242 upwards with the bottom butt of reference column 31, then be provided with reset spring 23 between chimb 3242's below and the stamping groove 22. When the upper die plate 1 descends to perform stamping, the positioning column 31 moves towards the inside of the stamping groove 22 under the pressure action of the upper die plate 1 and drives the material belt 5 to descend synchronously, so that stamping is realized; when the upper die plate 1 is lifted, the positioning column 31 is lifted again under the action of the return spring 23, so that the workpiece on the material belt 5 is separated from the stamping head, and the workpiece can move to the next stamping station conveniently. And the lower extreme of the pressure-bearing head 323 is provided with the hole of stepping down 3231 that supplies the lock needle 322 to upwards penetrate, when the cope match-plate pattern 1 pushes down fast, the pressure-bearing head 323 is close to relatively towards the direction of rotating sleeve 321 under the impact of cope match-plate pattern 1 to can utilize pressure-bearing head 323 and rotating sleeve 321 to extrude the material area 5 between the two, realize spacing and stable effect to the material area 5.

As shown in fig. 4 and 6, the linkage gear 3241 and the linkage member 444 in this embodiment are two bevel gears that are engaged with each other, and the bevel gear surface of the linkage gear 3241 is obliquely engaged with the linkage member 444, so that a clutch effect is achieved by the two bevel gears. When the upper die plate 1 presses the connecting rod 324 to move downwards, the linkage gear 3241 is driven to be separated from the linkage member 444, so that the material belt 5 cannot be influenced by the movement of the upper die plate 1 to shift, and similarly, only when the upper die plate 1 rises to the position where the height of the feeding head 32 is higher than the height of the working surface of the punching area 21, the linkage gear 3241 can be re-meshed with the linkage member 444, the ratchet 43 and the pawl 42 drive the material belt 5 to advance, and the workpiece on the material belt 5 is prevented from being blocked by the punching head when moving between the punching areas 21. The linkage gear 3241 and the linkage member 444 may be a worm gear and a worm, respectively, and the up-and-down movement of the linkage gear 3241 can keep linkage with the linkage member 444, and does not have a clutch effect.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A multi-station stamping die comprises an upper template (1) and a lower template (2); the lower template (2) is provided with a feeding mechanism (3); at least two stamping areas (21) are sequentially arranged on the upper template (1) and the lower template (2) along the feeding direction, and the distance between every two adjacent stamping areas (21) is equal; the method is characterized in that: the feeding mechanism (3) comprises a plurality of positioning columns (31) and feeding heads (32) arranged on the positioning columns (31); the positioning columns (31) are divided into two rows, the two rows of positioning columns (31) are arranged on two sides of the stamping area (21) along the feeding direction, and the distance between the positioning columns (31) on the two sides is equal to the width of the material belt (5); the feeding head (32) comprises a rotating sleeve (321) which is rotatably arranged at the upper end of the positioning column (31), and the rotating axis of the rotating sleeve (321) is perpendicular to the conveying direction of the material belt (5); a plurality of locking needles (322) which are used for penetrating into positioning holes at two sides of the material belt (5) are uniformly arranged on the rotating sleeve (321) along the circumferential direction; the lower template (2) is provided with a driving device (4) for driving the rotating sleeve (321) to rotate.

2. The multi-station stamping die according to claim 1, wherein: the rotating sleeve (321) and the positioning column (31) are arranged coaxially; a plurality of accommodating holes (3211) are uniformly formed in the upper end of the rotating sleeve (321) along the circumferential direction, and the locking pins (322) are slidably arranged in the accommodating holes (3211) in a one-to-one correspondence manner; a circle of rotating cavity (3212) is formed between the lower part of the accommodating hole (3211) and the upper end of the positioning column (31) at intervals; when the lower end of the lock pin (322) is abutted against the upper end face of the positioning column (31), the upper end of the lock pin (322) is positioned in the accommodating hole (3211); one side that reference column (31) upper end is close to punching press district (21) is provided with cam piece (311), be arc transition link between the up end of both ends and reference column (31) of cam piece (311).

3. The multi-station stamping die according to claim 1, wherein: the driving device (4) comprises a driving rod (41) arranged at the lower end of the upper template (1), a pawl (42) rotationally connected to the end part of the driving rod (41), and a ratchet wheel (43) arranged on the lower template (2), wherein a pressure spring for pressing the pawl (42) to the ratchet wheel (43) is arranged on the driving rod (41), and a linkage assembly (44) is arranged between the ratchet wheel (43) and the rotating sleeve (321); when the upper template (1) is pressed downwards, the pawl (42) and the ratchet wheel (43) move relatively; when the upper template (1) is lifted, the pawl (42) drives the ratchet wheel (43) to rotate.

4. The multi-station stamping die according to claim 3, wherein: a plurality of pawls (42) are uniformly arranged on the driving rod (41) along the vertical direction; and a limit block (411) used for limiting the rotation angle of the pawl (42) is arranged on one side of the driving rod (41) facing the ratchet wheel (43).

5. The multi-station stamping die according to claim 3, wherein: the positioning column (31) is arranged in a hollow mode, a connecting rod (324) penetrating through the positioning column (31) downwards is arranged on the rotating sleeve (321) along the axial lead, and a linkage gear (3241) is arranged at the lower end of the connecting rod (324); the linkage assembly (44) comprises a primary transmission rod (441) arranged on the ratchet wheel (43), a secondary transmission rod (442) linked with the primary transmission rod (441), and a plurality of tertiary transmission rods (443) linked with the secondary transmission rod (442) and corresponding to the positioning columns (31) one by one; and a linkage piece (444) linked with the linkage gear (3241) is arranged at the end part of the three-level transmission rod (443).

6. The multi-station stamping die according to claim 5, wherein: the conveying height of the feeding head (32) is higher than the height of the working surface of the stamping area (21); a punching groove (22) is formed in the lower template (2) at the bottom of the positioning column (31), and the lower end of the positioning column (31) is arranged in the punching groove (22) in a sliding mode along the vertical direction; and a return spring (23) is arranged between the bottom of the positioning column (31) and the stamping groove (22).

7. The multi-station stamping die according to claim 6, wherein: the connecting rod (324) is arranged on the rotating sleeve (321) in a sliding manner along the axial lead direction; the feeding head (32) further comprises a pressure bearing head (323) arranged at the upper end of the connecting rod (324), and the lower end of the pressure bearing head (323) is provided with a yielding hole (3231) for the lock pin (322) to penetrate upwards; the middle part of connecting rod (324) is provided with round chimb (3242), chimb (3242) upwards with the bottom butt of reference column (31), reset spring (23) upwards extrudes on chimb (3242).

8. The multi-station stamping die according to claim 7, wherein: the linkage gear (3241) and the linkage piece (444) are two bevel gears which are meshed with each other, and the bevel gear surface of the linkage gear (3241) is obliquely and upwards meshed with the linkage piece (444).