CN210614733U

CN210614733U - Bending mechanism for lead frame

Info

Publication number: CN210614733U
Application number: CN201921274311.1U
Authority: CN
Inventors: 张祖良; 王小荣; 王大公
Original assignee: Changzhou Henglian Machinery Hardware Co ltd
Current assignee: Changzhou Henglian Machinery Hardware Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-26
Anticipated expiration: 2029-08-07

Abstract

The utility model relates to a bending mechanism for lead frame, which comprises a frame, and a clamping component and a bending component which are arranged on the frame, wherein the clamping component is provided with two groups and is symmetrically arranged, the bending component comprises an upper die, a lower die and a first driving cylinder, the bending component is provided with two groups and is respectively correspondingly arranged at the outer sides of the two groups of clamping components, the bending component comprises a rotating motor, a mounting plate, a connecting rod, a bending block and a second driving cylinder, the raw material lead frame is horizontally placed on a first clamping groove of the left lower die and the right lower die, then the second driving cylinder drives the bending block to rise to the same horizontal plane of the lower die, the rotating motor drives the connecting rod to rotate upwards and drives the mounting plate to turn upwards around the connecting rod, the mounting plate drives the bending block to rotate upwards, thereby bending the raw material lead frame, the bending block is vertical to, the mechanism has simple structure, is not easy to deflect and has good bending effect.

Description

Bending mechanism for lead frame

Technical Field

The utility model relates to a mechanism of bending especially relates to a mechanism of bending for lead frame.

Background

The traditional lead frame bending method is manual bending, and with the progress and development of the society, some enterprises begin to bend by using mechanical devices, for example, a lead frame bending device with the patent number of CN201110065050.4 utilizes a piston ejecting end to eject upwards to push a movable guide rail to rotate upwards around a pin shaft along the arrow direction, so that a lead frame radiating fin part in a sliding groove is pushed to bend upwards relative to a pin part, but in the practical application, the piston ejecting section is often easy to deflect, so that the lead frame cannot be accurately bent symmetrically at two ends.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's defect, provide a simple structure, be difficult for taking place to deflect, bend effectual a mechanism of bending for lead frame.

The utility model discloses a realize through following technical scheme: a bending mechanism for a lead frame comprises a rack, and a clamping assembly and a bending assembly which are arranged on the rack, wherein the clamping assembly is provided with two groups and is symmetrically arranged, the clamping assembly comprises an upper die, a lower die and a first driving cylinder, the upper die is fixed on the rack, the lower die is correspondingly arranged below the upper die, a first clamping groove for placing the lead frame is arranged on the lower die, the first driving cylinder is connected with the lower die and can drive the lower die to be close to the upper die and clamp the lead frame, the bending assembly is provided with two groups and is respectively and correspondingly arranged at the outer sides of the two groups of clamping assemblies, the bending assembly comprises a rotating motor, a mounting plate, a connecting rod, a bending block and a second driving cylinder, the mounting plate is fixedly connected with the connecting rod, the second driving cylinder is arranged on the mounting plate, the second driving cylinder is connected with the bending, the rotating motor is connected with the connecting rod and can drive the connecting rod to rotate, so that the lead frame is bent by the bending block.

In order to facilitate the sliding of the bending block, a sliding groove is formed in the mounting plate, the bending block is arranged on the sliding groove, and the second driving cylinder can drive the bending block to slide along the sliding groove.

In order to conveniently adjust the position of the whole body of an operator, the rack comprises a box body and a sliding table, the sliding table is arranged at the top of the box body and is slidably connected with the box body, the clamping assembly and the bending assembly are arranged on the sliding table, a locking disc is arranged on the box body along the length direction of the box body, and the locking disc is used for locking the sliding table.

In order to facilitate the matching of the upper die and the lower die, the upper die comprises a top plate, a middle plate and a bottom plate, and the top plate and the bottom plate are parallel to each other and are perpendicular to the middle plate.

The pressing of the upper die and the lower die is further facilitated, a placing cavity is formed among the top plate, the middle plate and the bottom plate in a surrounding mode, the lower die is arranged in the placing cavity, the bottom plate is provided with a through hole, the first cylinder is arranged at the bottom of the middle plate, the driving rod of the first cylinder penetrates through the through hole and is fixedly connected with the bottom of the lower die, and the first driving cylinder can drive the lower die to move up and down along the side portion of the middle plate to clamp or loosen the.

In order to facilitate bending, a second clamping groove corresponding to the first clamping groove is arranged on the bending block.

In order to save manpower and strengthen automation, the motor, the first driving cylinder and the second driving cylinder are connected with a PLC control system.

In order to facilitate observation, one side of the rack is connected with a display screen.

The utility model has the advantages that: utilize raw and other materials lead frame level to place on the first screens groove of controlling two lower moulds, then the second drives actuating cylinder drive bending piece and rises to the same horizontal plane of lower mould, the rotating electrical machines drive connecting rod upwards rotatory and drive the mounting panel around the connecting rod upset upwards, the mounting panel drives bending piece upwards rotatory, thereby bend raw and other materials lead frame, bending piece and lower mould are mutually perpendicular this moment, thereby the second drives actuating cylinder drive bending piece and moves back to loosen the lead frame, the mechanism simple structure, difficult emergence is deflected, it is effectual to bend.

Drawings

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

fig. 2 is a schematic structural view of the clamping assembly and the bending assembly of the present invention;

in the figure: 1. a frame; 11. a box body; 12. a sliding table; 2. a clamping assembly; 21. an upper die; 211. a top plate; 212. a middle plate; 213. a base plate; 22. a lower die; 221. a first clamping groove; 23. a first driving cylinder; 3. bending the assembly; 31. a rotating electric machine; 32. mounting a plate; 33. a connecting rod; 34. bending the block; 341. a second clamping groove; 35. a second driving cylinder; 4. a display screen.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.

As shown in fig. 1-2, a bending mechanism for a lead frame includes a frame 1, and a clamping assembly 2 and a bending assembly 3 disposed on the frame 1, where the clamping assembly 2 is provided with two sets of symmetrical clamping assemblies, including an upper die 21, a lower die 22 and a first driving cylinder 23, the upper die 21 is fixed on the frame 1, the lower die 22 is correspondingly disposed below the upper die 21, the lower die 22 is provided with a first clamping groove 221 for placing the lead frame, that is, the first driving cylinder 23 is connected with the lower die 22 and can drive the lower die 22 to approach the upper die 21 and clamp the lead frame, the upper die 21 and the lower die 22 are matched, the upper die 21 includes a top plate 211, a middle plate 212 and a bottom plate 213, the top plate 211 and the bottom plate 213 are parallel to each other and perpendicular to the middle plate 212, further facilitating the compression between the upper die 21 and the lower die 22, a placing cavity is defined between the top plate 211, the, the lower die 22 is arranged in the placing cavity, the bottom plate 213 is provided with a through hole, the first air cylinder is arranged at the bottom of the middle plate 212, the driving rod of the first air cylinder penetrates through the through hole to be fixedly connected with the bottom of the lower die 22, the first driving air cylinder 23 can drive the lower die 22 to move up and down along the side part of the middle plate 212 so as to clamp or loosen the lead frame, the bending assemblies 3 are provided with two groups and are respectively and correspondingly arranged at the outer sides of the two groups of clamping assemblies 2, each bending assembly 3 comprises a rotating motor 31, a mounting plate 32, a connecting rod 33, a bending block 34 and a second driving air cylinder 35, the mounting plate 32 is fixedly connected with the connecting rod 33, the second driving air cylinder 35 is arranged on the mounting plate 32, the bending block 34 is provided with a second clamping groove 341 corresponding to the first clamping groove 221, the second driving air cylinder 35 is connected with the bending block, the clamping assembly 2 and the bending assembly 3 are respectively provided with a first photoelectric switch and a second photoelectric switch, when the connecting rod 33 does not drive the bending block 34 to rotate, the second driving cylinder 35 can drive the bending block 34 to ascend and descend, so that the heights of the bending block 34 and the lower die 22 reach a uniform horizontal plane, when the connecting rod 33 rotates to drive the mounting plate 32 to overturn upwards, and meanwhile, the bending block 34 is driven by the mounting plate 32 to overturn upwards, at the moment, the lead frame can be bent, in order to facilitate the sliding of the bending block 34, the mounting plate 32 is provided with a sliding groove, the bending block 34 is arranged on the sliding groove, the second driving cylinder 35 can drive the bending block 34 to slide along the sliding groove, the rotating motor 31 is connected with the connecting rod 33 and can drive the connecting rod 33 to rotate, so that the bending block 34 bends the lead.

In order to facilitate the overall position adjustment of an operator, the rack 1 comprises a box body 11 and a sliding table 12, the sliding table 12 is arranged at the top of the box body 11 and is slidably connected with the box body 11, the clamping assembly 2 and the bending assembly 3 are both arranged on the sliding table 12, the box body 11 is provided with a locking disc along the length direction of the box body, and the locking disc is used for locking the sliding table 12.

In order to save manpower and enhance automation, the motor, the first driving cylinder 23 and the second driving cylinder 35 are connected with a PLC control system.

For the convenience of observation, a display screen 4 is connected to one side of the machine frame 1.

The working principle is as follows: the raw material lead frame is manually and horizontally placed on the first clamping grooves 221 of the left lower die 22 and the right lower die 22, then the second driving air cylinder 35 drives the bending block 34 to ascend to the same horizontal plane of the lower dies 22, the rotating motor 31 drives the connecting rod 33 to rotate upwards and drives the mounting plate 32 to turn upwards around the connecting rod 33, the mounting plate 32 drives the bending block 34 to rotate upwards, so that the raw material lead frame is bent, the bending block 34 is perpendicular to the lower dies 22, the left bending block 34 and the right bending block 34 bend the lead frame into a concave shape, the second driving air cylinder 35 drives the bending block 34 to retreat backwards so as to loosen the lead frame, and a finished product is manually taken out.

Compared with the prior art, the bending mechanism for the lead frame is simple in structure, not prone to deflection and good in bending effect.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A bending mechanism for a lead frame is characterized in that: comprises a rack (1), clamping components (2) and a bending component (3) which are arranged on the rack (1), wherein the clamping components (2) are provided with two groups and are symmetrically arranged, the clamping components comprise an upper die (21), a lower die (22) and a first driving cylinder (23), the upper die (21) is fixed on the rack (1), the lower die (22) is correspondingly arranged below the upper die (21) and is provided with a first clamping groove (221) for placing a lead frame on the lower die (22), the first driving cylinder (23) is connected with the lower die (22) and can drive the lower die (22) to be close to the upper die (21) and clamp the lead frame, the bending component (3) is provided with two groups and is correspondingly arranged at the outer sides of the two groups of clamping components (2) respectively, the bending component (3) comprises a rotating motor (31), a mounting plate (32), a connecting rod (33), a bending block (34) and a second driving cylinder (35, mounting panel (32) and connecting rod (33) fixed connection, second drive cylinder (35) set up on mounting panel (32), second drive cylinder (35) with bend piece (34) and be connected and can drive and bend piece (34) and move along mounting panel (32) length direction, rotating electrical machines (31) are connected with connecting rod (33) and can drive connecting rod (33) and rotate to the lead frame is bent to messenger's bending piece (34).

2. A bending mechanism for lead frames according to claim 1, wherein: the mounting plate (32) is provided with a sliding groove, the bending block (34) is arranged on the sliding groove, and the second driving cylinder (35) can drive the bending block (34) to slide along the sliding groove.

3. A bending mechanism for lead frames according to claim 1, wherein: frame (1) includes box (11) and slip table (12), slip table (12) set up at box (11) top and with box (11) slidable connection, clamping component (2) and bending component (3) all set up on slip table (12), box (11) are equipped with the locking dish along its length direction, the locking dish is used for locking slip table (12).

4. A bending mechanism for lead frames according to claim 1, wherein: the upper die (21) comprises a top plate (211), a middle plate (212) and a bottom plate (213), wherein the top plate (211) and the bottom plate (213) are parallel to each other and are perpendicular to the middle plate (212).

5. A bending mechanism for lead frames according to claim 4, wherein: a placing cavity is defined among the top plate (211), the middle plate (212) and the bottom plate (213), the lower die (22) is arranged in the placing cavity, a through hole is formed in the bottom plate (213), the first air cylinder is arranged at the bottom of the middle plate (212), a driving rod of the first air cylinder penetrates through the through hole to be fixedly connected with the bottom of the lower die (22), and the first driving air cylinder (23) can drive the lower die (22) to move up and down along the side portion of the middle plate (212) so as to clamp or loosen a lead frame.

6. A bending mechanism for lead frames according to claim 4, wherein: the bending block (34) is provided with a second clamping groove (341) corresponding to the first clamping groove (221).

7. A bending mechanism for lead frames according to claim 4, wherein: the motor, the first driving cylinder (23) and the second driving cylinder (35) are connected with a PLC control system.

8. A bending mechanism for lead frames according to claim 4, wherein: one side of the frame (1) is connected with a display screen (4).