CN216065203U

CN216065203U - Etching die for lead frame

Info

Publication number: CN216065203U
Application number: CN202122391882.7U
Authority: CN
Inventors: 陈�峰; 苏小杰
Original assignee: Kunshan Yuchengfeng Precision Mould Co ltd
Current assignee: Kunshan Yuchengfeng Precision Mould Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-18
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a lead frame etching mould, belonging to the technical field of lead frame moulds, wherein a mould is arranged on one surface of a mould body, a limit groove is arranged on the other surface of the mould body, the inner wall of the limit groove is communicated with a sliding groove, one end of the sliding groove is communicated with a sliding hole, a limit post is slidably sleeved on the inner wall of the sliding hole, one end of the limit post is provided with a receiving hole, the inner wall of the receiving hole is slidably sleeved with a support rod, one end of the support rod is fixedly connected with a support block, the support block is cylindrical in shape, the lead frame etching mould can avoid the contact between the mould and a punch press worktable through the telescopic limit post, thereby avoiding mould collision, greatly prolonging the service life of the etching mould, and the arranged detachable mounting plate is very convenient for fastening the etching mould and the punch press plate of the punch press, greatly improving the mould-mounting efficiency, while the mounting plate can be removed when not in use.

Description

Etching die for lead frame

Technical Field

The utility model relates to the technical field of lead frame dies, in particular to a lead frame etching die.

Background

The lead frame is a base material of a semiconductor package, which serves as a chip carrier of an integrated circuit, and the electrical connection of the internal circuit terminals of the chip and the external leads is realized by means of a bonding material.

At present, the existing lead frame etching die is mostly installed on a punching machine tool in the process, and then the product is subjected to punch forming, but when the lead frame etching die is fastened with a punching plate of the punching machine tool, the lead frame etching die is mostly fixed through screws, screw hole sliding is easily caused in the long-time screw mounting and dismounting process, great inconvenience is brought to die erecting and time consuming, the existing lead frame etching die is mostly free of limiting parts in the using process, the lead frame etching die is probably touched with a workbench of the punching machine tool, the die hitting is caused, and the service life of the lead frame etching die is shortened.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a lead frame etching mould which can avoid the contact between a module and a punch press workbench through a telescopic limiting column, so that the mould is prevented from being collided, the service life of the etching mould is greatly prolonged, and the arranged detachable mounting plate is very convenient for fastening the etching mould and a punch press plate, so that the mould erecting efficiency is greatly improved, and meanwhile, the mounting plate can be detached when not used.

In order to solve the above problems, the present invention adopts the following technical solutions.

A lead frame etching die comprises a die body, wherein a module is arranged on one surface of the die body, a limiting groove is formed in the other surface of the die body, a sliding groove is communicated with the inner wall of the limiting groove, a sliding hole is communicated with one end of the sliding groove, a limiting column is slidably sleeved on the inner wall of the sliding hole, a containing hole is formed in one end of the limiting column, a supporting rod is slidably sleeved on the inner wall of the containing hole, a supporting block is fixedly connected to one end of the supporting rod, the supporting block is cylindrical in shape, the surface of the supporting block is in threaded connection with the inner wall of the sliding groove, a limiting plate is fixedly connected to the side face of one end of the supporting block, an inner hexagonal groove is formed in one surface of the limiting plate, a mounting plate is fixedly fastened to one surface of the die body through screws, and a concentric threaded hole and a countersunk groove are formed in one surface of the die body and the mounting plate respectively, the draw-in groove has been seted up on a surface of mounting panel, and this lead frame etching mould can avoid producing the contact between module and the punch press workstation through the spacing post of the telescopic that sets up to avoid the mould to hit the mould, great extension etching mould's life, and the mounting panel that can install and remove that sets up, very make things convenient for etching mould and punch press ram plate to fasten, great improvement a mould efficiency, can dismantle it when not using the mounting panel simultaneously.

Further, the one end contact of bracing piece is connected with supporting spring, supporting spring's surface and the inner wall contact who accomodates the hole are connected, the internal diameter of accomodating the hole is greater than the external diameter of bracing piece, and the bracing piece that sets up has flexible function in accomodating the hole, can make spacing post automatic re-setting moreover through supporting spring's compression elasticity.

Furthermore, the side face of one end of the limiting column is fixedly sleeved with an anti-dropping ring, and the surface of the anti-dropping ring is in contact connection with the inner wall of the sliding groove.

Furthermore, the external diameter of anticreep ring is greater than the internal diameter of slide opening, and the anticreep ring of setting can avoid spacing post upwards roll-off slide opening, has spacing anticreep function.

Furthermore, an inner thread is formed on the inner wall of one end of the sliding groove.

Furthermore, the surface of the supporting block is provided with external threads matched with the internal threads of the sliding groove, the supporting block is connected with the sliding groove through threads, and the supporting block has the functions of disassembling and assembling and is convenient for replacing the later-stage limiting column.

Further, the surface of limiting plate is connected with the inner wall contact of spacing groove, and the thickness size of limiting plate is less than the degree of depth size of spacing groove, and the mounted position of limiting plate not only can be restricted to the spacing groove, can avoid the fixed of the surperficial influence mounting panel of limiting plate protrusion mould body moreover.

Compared with the prior art, the utility model has the advantages that:

(1) this scheme can avoid producing the contact between module and the punch press workstation through the spacing post of telescopic that sets up to avoid the mould to hit the mould, great extension etching die's life, and the mounting panel that can install and remove that sets up makes things convenient for very much that etching die fastens with punch press punching press board, great improvement a mould efficiency, can dismantle it when not using the mounting panel simultaneously.

(2) The one end contact of bracing piece is connected with supporting spring, and supporting spring's surface is connected with the inner wall contact of accomodating the hole, and the internal diameter of accomodating the hole is greater than the external diameter of bracing piece, and the bracing piece that sets up has flexible function in accomodating the hole, can make spacing post automatic re-setting moreover through supporting spring's compression elasticity.

(3) The fixed cover in one end side of spacing post has connect the anticreep ring, and the surface of anticreep ring is connected with the inner wall contact of spout, and the external diameter of anticreep ring is greater than the internal diameter of slide opening, and the anticreep ring that sets up can avoid spacing post roll-off slide opening upwards, has spacing anticreep function.

(4) The internal thread is seted up to the one end inner wall of spout, the surface of supporting shoe seted up with spout internal thread assorted external screw thread, the supporting shoe passes through the screw thread to be connected with the spout, has the function of split combination, the change of the spacing post in later stage of being convenient for.

(5) The surface of limiting plate is connected with the inner wall contact of spacing groove, and the thickness size of limiting plate is less than the degree of depth size of spacing groove, and the mounted position of limiting plate not only can be restricted to the spacing groove, can avoid the fixed of the surface influence mounting panel of limiting plate protrusion mould body moreover.

Drawings

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

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a bottom view of the mounting plate structure of the present invention;

FIG. 4 is a bottom view of the die body structure of the present invention;

FIG. 5 is a top view of the support bar and support block mounting structure of the present invention.

The reference numbers in the figures illustrate:

1 mould body, 11 modules, 12 chutes, 13 slide holes, 14 limit grooves, 15 threaded holes, 2 support blocks, 21 limit plates, 211 internal hexagonal grooves, 22 support rods, 3 limit columns, 31 accommodating holes, 32 support springs, 33 anti-drop rings, 4 mounting plates, 41 clamping grooves and 42 countersunk grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a lead frame etching mold comprises a mold body 1, referring to fig. 1-5, a mold 11 is disposed on one surface of the mold body 1, the mold 11 is a mold assembly such as a pin, a connecting rib, and an angle end, and belongs to the prior art, and is used for rapidly forming a lead frame, the composition structure and the working principle of which are well known to those skilled in the art, and will not be described in detail herein, a limiting groove 14 is disposed on the other surface of the mold body 1, a sliding groove 12 is communicated with the inner wall of the limiting groove 14, one end of the sliding groove 12 is communicated with a sliding hole 13, a limiting post 3 is slidably sleeved on the inner wall of the sliding hole 13, the limiting post 3 is used for limiting the downward moving position of the mold, so that a certain gap is left between the mold 11 and the surface of a machine tool table, a receiving hole 31 is disposed at one end of the limiting post 3, a support rod 22 is slidably sleeved on the inner wall of the receiving hole 31, the supporting rod 22 is used for limiting the moving direction of the limiting column 3, one end of the supporting rod 22 is fixedly connected with the supporting block 2, the supporting block 2 is used for fixing the installation position of the supporting rod 22, the supporting block 2 is cylindrical, the surface of the supporting block 2 is in threaded connection with the inner wall of the sliding groove 12, one end side of the supporting block 2 is fixedly connected with the limiting plate 21, the limiting plate 21 is used for limiting the installation depth of the supporting block 2, one surface of the limiting plate 21 is provided with an inner hexagonal groove 211, the supporting block 2 can be conveniently rotated by a worker through an inner hexagonal wrench through the inner hexagonal groove 211, one surface of the die body 1 is fastened with the mounting plate 4 through screws, one surface of the die body 1 and one surface of the mounting plate 4 are respectively provided with a concentric and coaxial threaded hole 15 and a countersunk groove 42, the threaded hole 15 and the countersunk groove 42 are used for connecting the screws, one surface of the mounting plate 4 is provided with a clamping groove 41, and the section of the clamping groove 41 is T-shaped, the one end card post mounting panel 4 of bolt of being convenient for to fasten mould and lathe punching press board through the bolt.

Referring to fig. 1 and 2, one end of the supporting rod 22 is connected to a supporting spring 32 in a contact manner, the surface of the supporting spring 32 is connected to the inner wall of the accommodating hole 31 in a contact manner, the inner diameter of the accommodating hole 31 is larger than the outer diameter of the supporting rod 32, the supporting rod 22 is arranged to have a telescopic function in the accommodating hole 31, the limiting column 3 can automatically reset by the compression elastic force of the supporting spring 32, an anti-slip ring 33 is fixedly sleeved on the side surface of one end of the limiting column 3, the surface of the anti-slip ring 33 is connected to the inner wall of the chute 12 in a contact manner, the outer diameter of the anti-slip ring 33 is larger than the inner diameter of the chute 13, and the anti-slip ring 33 is arranged to prevent the limiting column 3 from sliding out of the chute 13 upwards, so as to have a limiting and anti-slip function.

Please refer to fig. 2, an inner thread is provided on an inner wall of one end of the chute 12, an outer thread matched with the inner thread of the chute 12 is provided on a surface of the supporting block 2, the supporting block 2 is connected with the chute 12 through a thread, which has a disassembling and assembling function, and is convenient for replacing the limiting post 3 in the later stage, the surface of the limiting plate 21 is in contact with the inner wall of the limiting groove 14, and the thickness of the limiting plate 21 is smaller than the depth of the limiting groove 14, the limiting groove 14 can not only limit the installation position of the limiting plate 21, but also prevent the limiting plate 21 from protruding out of the surface of the mold body 1 to affect the fixation of the mounting plate 4.

When the lead frame etching die is installed, firstly, the die body 1 is placed on the surface of a machine tool workbench, then the stamping plate is controlled to move downwards to be close to the surface of the mounting plate 4, then the fixing nut at one end of the bolt is clamped into the clamping groove 41 to a proper depth, then one end of the bolt penetrates through the stamping plate and is fastened through the nut, so that the die body 1 is fastened on the lower end surface of the stamping plate, at the moment, the module 11 faces downwards to the surface of the workbench, and one end of the limiting column 3 is in contact with the surface of the supporting block 2 under the pressure of the die body 1, so that the module 11 cannot be in contact with the surface of the workbench under the action of the limiting column 3, then a product to be processed is placed on the surface of the workbench for stamping and extruding, it needs to be noted that the product is positioned between the two limiting columns 3 and cannot be in contact with the limiting column 3, and the phenomenon that the downward stamping depth of the module 11 is not in place is avoided, through the spacing post 3 of telescopic that sets up, can avoid producing the contact between module 11 and the punch press workstation, thereby avoid the mould to hit the mould, great extension etching mould's life, and the mounting panel 4 that can install and remove that sets up, it fastens through the bolt with the punch press board to make things convenient for very much, need not to use the screw, can not worry the smooth silk of screw hole, great improvement frame mould efficiency, can dismantle it when not using mounting panel 4 simultaneously, but the exclusive use mould.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a lead frame etching mould, includes mould body (1), its characterized in that: the die is characterized in that a module (11) is arranged on one surface of the die body (1), a limiting groove (14) is formed in the other surface of the die body (1), a sliding groove (12) is communicated with the inner wall of the limiting groove (14), a sliding hole (13) is communicated with one end of the sliding groove (12), a limiting column (3) is sleeved on the inner wall of the sliding hole (13) in a sliding mode, a containing hole (31) is formed in one end of the limiting column (3), a supporting rod (22) is sleeved on the inner wall of the containing hole (31) in a sliding mode, a supporting block (2) is fixedly connected to one end of the supporting rod (22), the supporting block (2) is cylindrical in shape, the surface of the supporting block (2) is in threaded connection with the inner wall of the sliding groove (12), a limiting plate (21) is fixedly connected to one end side face of the supporting block (2), and an inner hexagonal groove (211) is formed in one surface of the limiting plate (21), the die is characterized in that a mounting plate (4) is fastened on one surface of the die body (1) through screws, a concentric and coaxial threaded hole (15) and a countersunk groove (42) are respectively formed in one surface of the die body (1) and the mounting plate (4), and a clamping groove (41) is formed in one surface of the mounting plate (4).

2. The lead frame etching mold according to claim 1, wherein: the one end contact of bracing piece (22) is connected with supporting spring (32), the surface of supporting spring (32) is connected with the inner wall contact of accomodating hole (31), the internal diameter of accomodating hole (31) is greater than the external diameter of bracing piece (22).

3. The lead frame etching mold according to claim 1, wherein: an anti-falling ring (33) is fixedly sleeved on one end side face of the limiting column (3), and the surface of the anti-falling ring (33) is in contact connection with the inner wall of the sliding groove (12).

4. The lead frame etching mold according to claim 3, wherein: the outer diameter of the anti-falling ring (33) is larger than the inner diameter of the sliding hole (13).

5. The lead frame etching mold according to claim 1, wherein: an inner thread is arranged on the inner wall of one end of the sliding chute (12).

6. The lead frame etching mold according to claim 1, wherein: the surface of the supporting block (2) is provided with external threads matched with the internal threads of the sliding groove (12).

7. The lead frame etching mold according to claim 1, wherein: the surface of the limiting plate (21) is in contact connection with the inner wall of the limiting groove (14), and the thickness of the limiting plate (21) is smaller than the depth of the limiting groove (14).