Upper die assembly structure of lead frame die

Abstract

The utility model discloses an upper die assembly structure of a lead frame die. The upper die assembly structure comprises an upper die seat, a discharging seat plate, a guide column, a guide sleeve, a ball retainer, a guide column spring, a male die, a male die fixing plate and a male die base plate assembly guide column, the guide sleeve is fixedly sleeved with the upper die base, the male die base plate and the male die fixing plate are sequentially fixed to the upper die base, the upper end of the male die is fixed to the male die fixing plate, the lower end of the male die penetrates through a discharging hole in the middle of the discharging base plate in a clearance mode, the discharging base plate is movably sleeved with the guide column, and the lower end of the guide column is movably arranged in the guide sleeve in a penetrating mode. The upper ends of the assembling guide columns are fixed to the upper die base, and the lower ends of the assembling guide columns penetrate through the two assembling holes in the discharging base plate in a clearance mode. Due to the fact that the two assembling guide columns are arranged in the assembling process, the two assembling guide columns penetrate into the two assembling holes in the discharging base plate before the male die in the assembling process, the guiding function is achieved, the male die can accurately penetrate into the discharging holes in the discharging base plate, and the male die is prevented from being damaged by collision.

Description

Technical Field

[0001] The utility model relates to a stamping die, in particular to an upper die assembly structure of a lead frame die. Background Art

[0002] like Figure 1 As shown, the conventional lead frame stamping die comprises an upper die seat 1', a discharge seat plate 2', a guide mechanism 3', a punch 4', a punch fixing plate 5', a punch pad 6', a die seat 7', and a lower die seat 8'; the upper die adopts an inverted structure, which is advanced in structure and quick and convenient to disassemble and assemble. However, the disadvantage is that during assembly, Figure 2 , Figure 3 As shown, when the punch 4' penetrates into the discharge hole 21' on the discharge seat plate 2', the discharge seat plate 2' is prone to tilt, causing the punch 4' to be damaged, which requires a high level of technical skills for the installation master. Utility Model Content

[0003] The utility model aims to provide a lead frame mold upper mold assembly structure which avoids the punch from being damaged.

[0004] To achieve the above purpose, the technical solution of the utility model is:

[0005] The utility model is an upper die assembly structure of a lead frame die, comprising an upper die seat, a discharge seat plate, two guide pillars, two guide sleeves, a ball retainer, a guide pillar spring, a punch, a punch fixing plate, a punch pad, and two assembly guide pillars;

[0006] The two guide sleeves are respectively fixedly sleeved in the guide sleeve holes on both sides of the upper die seat, the punch pad and the punch fixing plate are fixed on the upper die seat in sequence, the upper end of the punch is fixed on the punch fixing plate, the lower end of the punch extends to the die seat after passing through the unloading hole in the middle of the unloading seat plate, the two sides of the unloading seat plate are respectively movably sleeved on the two guide pillars and the unloading seat plate rests on the annular convex edges of the guide pillars, the lower ends of the two guide pillars are movably inserted into the two guide sleeves through the ball retainer, the guide pillar springs are respectively sleeved on the guide pillars, the two ends of the guide pillar springs rest on the annular convex edges of the guide pillars and the ball retainer, the upper ends of the two assembly guide pillars are fixed on the upper die seat at intervals, and the lower ends of the two assembly guide pillars respectively pass through the two assembly holes on the unloading seat plate with gaps.

[0007] After adopting the above scheme, since two assembly guide pillars are set during the assembly of the utility model, during assembly, the two assembly guide pillars penetrate into the two assembly holes on the discharge seat plate before the punch, play a guiding role, so that the punch can accurately penetrate into the discharge hole on the discharge seat plate, avoiding damage to the punch.

[0008] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the structural diagram of the lead frame mold;

[0010] Figure 2 This is the initial schematic diagram of the traditional lead frame die assembly;

[0011] Figure 3 It is a schematic diagram of the assembly process of the conventional lead frame die assembly;

[0012] Figure 4 It is a schematic diagram of the first step of assembly of the utility model;

[0013] Figure 5 It is a schematic diagram of the second step of assembly of the utility model;

[0014] Figure 6 It is a schematic diagram of the third step of assembly of the utility model. DETAILED DESCRIPTION

[0015] like Figure 4 As shown, the utility model is a lead frame mold upper mold assembly structure, including an upper mold base 1, a discharge base plate 2, two guide pillars 3, two guide sleeves 4, a ball retainer 5, a guide pillar spring 6, a punch 7, a punch fixing plate 8, a punch pad 9, and two assembly guide pillars 10.

[0016] The two guide sleeves 4 are respectively fixedly sleeved in the guide sleeve holes 11 on both sides of the upper die base 1, the punch pad 9 and the punch fixing plate 8 are fixed on the upper die base 1 in sequence, the upper end of the punch 7 is fixed on the punch fixing plate 8, and the lower end of the punch 7 passes through the discharge hole 21 in the middle of the discharge seat plate 2 and extends to the die seat, the two sides of the discharge seat plate 2 are respectively movably sleeved on the two guide pillars 3 and the discharge seat plate 2 rests on the annular convex edge 31 of the guide pillar 3, the lower ends of the two guide pillars 3 are movably inserted into the two guide sleeves 4 through the ball retainer 5, the guide pillar springs 6 are respectively sleeved on the guide pillars 3, and the two ends of the guide pillar spring 6 rest on the annular convex edge 31 of the guide pillar 3 and the ball retainer 5 respectively, the upper ends of the two assembly guide pillars 10 are fixed in the fixing holes 12 of the upper die base 1 at intervals, and the lower ends of the two assembly guide pillars 10 respectively pass through the two assembly holes 22 on the discharge seat plate 2 with gaps.

[0017] The working principle of this utility model:

[0018] like Figure 5 , Figure 6 As shown, first, one end of the two assembly guide pillars 10 is fixedly inserted into the fixing hole 12 of the upper die seat 1, and the two assembly holes 22 on the unloading seat plate 2 are respectively loosely sleeved on the other ends of the two assembly guide pillars 10, and then the unloading hole 21 on the unloading seat plate 2 is loosely sleeved on the punch 7. At the same time, the ball retainer 5 on the guide pillar 3 is inserted into the guide sleeve 4.

[0019] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A lead frame mold upper mold assembly structure, characterized in that: It includes an upper die seat, a discharge seat plate, two guide pillars, two guide sleeves, a ball cage, a guide pillar spring, a punch, a punch fixing plate, a punch pad, and two assembly guide pillars; The two guide sleeves are respectively fixedly sleeved in the guide sleeve holes on both sides of the upper die seat, the punch pad and the punch fixing plate are fixed on the upper die seat in sequence, the upper end of the punch is fixed on the punch fixing plate, the lower end of the punch extends to the die seat after passing through the unloading hole in the middle of the unloading seat plate, the two sides of the unloading seat plate are respectively movably sleeved on the two guide pillars and the unloading seat plate rests on the annular convex edges of the guide pillars, the lower ends of the two guide pillars are movably inserted into the two guide sleeves through the ball retainer, the guide pillar springs are respectively sleeved on the guide pillars, the two ends of the guide pillar springs rest on the annular convex edges of the guide pillars and the ball retainer, the upper ends of the two assembly guide pillars are fixed on the upper die seat at intervals, and the lower ends of the two assembly guide pillars respectively pass through the two assembly holes on the unloading seat plate with gaps.

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