模块化精冲模结构

Abstract

本实用新型公开了一种模块化精冲模结构，属于精冲模具技术领域，包括相互独立的模架单元和模块化精冲单元。模架单元包括模架上模座板、模架下模座板、模架导柱、模架导套、模架上承力环、压边力顶杆、模架下承力环、反压力顶杆、上限位柱、下限位柱和定位挡销；模块化精冲单元包括凸凹模、凸模、凹模、凹模固定板、上凸模固定板、下凸固板、卸料板、下垫板、上模板、压边力传力杆、反压板传力杆、反压板、导柱压板、下模板、模块导柱和模块导套。模架单元通过模架导柱和模架导套组成精密外导向系统，模块化精冲单元通过模块导柱和模块导套组成精密内导向系统，形成双重导向以确保高精度精冲。

Claims

1. Modular fine blanking die structure comprising die frame units and modular fine blanking units independent from each other, characterized in that, The mold frame unit includes: upper mold base plate (1), lower mold base plate (8), mold frame guide post (10), mold frame guide sleeve (9), upper mold frame bearing ring (2), blank holder force ejector rod (3), lower mold frame bearing ring (6), counter pressure ejector rod (7), upper limit post (4), lower limit post (5), and positioning stop pin (11); the modular fine blanking unit includes: punch and die (18), punch (22), die (21), die fixing plate (29), upper punch fixing plate (16), lower punch fixing plate (31), stripper plate (19), lower pad plate (30), upper template (15), blank holder force transmission rod (14), counter pressure plate force transmission rod (24), counter pressure plate (23), guide post pressure plate (35), counter pressure ejector rod (7), lower template (32), module guide post (34), first module guide sleeve (33), and second module guide sleeve (37) as the main components.

2. The modular fine blanking die structure of claim 1, wherein, The mold frame unit forms a precision roller external guide system through the mold frame guide post (10) and the mold frame guide sleeve (9), which integrates the mold frame parts and fixes them on the fine blanking machine. The height matching of the upper limit post (4) and the lower limit post (5) ensures that the punch and die (18) and the die (21) are accurately aligned in the die depth during fine blanking.

3. The modular fine blanking die structure of claim 1, wherein, The upper template (15) is fixed to the upper mold base plate (1) of the mold frame by screws; the lower template (32) is fixed to the lower mold base plate (8) of the mold frame by screws; the punch and die (18) are fixed on the upper punch fixing plate (16); all parts in the upper mold are fixed on the upper template (15), and the stripper plate (19) is connected to the upper mold part by the stripper sleeve assembly (17); the blank holder force transmission rod (14) transmits the blank holder force and stripping force to the stripper plate (19) through the corresponding hole on the upper template (15); the die (21) is fixed in the die fixing plate (29) and installed and fixed together on the lower pad plate (30); the punch (22) is fixed on the lower punch fixing plate (31), and all the lower mold parts are fixed on the lower template (32).

4. The modular fine blanking die structure of claim 1, wherein, The unloading plate (19) is fixed with a module guide post (34), the die fixing plate (29) is embedded with the second module guide sleeve (37) and the upper punch fixing plate (16) is embedded with the first module guide sleeve (33). The module guide post (34) is fixedly connected with the guide post pressure plate (35). The module guide post (34), the first module guide sleeve (33) and the second module guide sleeve (37) together form a precision internal guiding system to connect all parts in the modular fine blanking die structure and ensure that the gap between the punch and the die is uniform during fine blanking.

5. The modular fine blanking die structure of claim 1, wherein, The counter-pressure push rod (7) is connected to the counter-pressure plate (23) through the counter-pressure plate force transmission rod (24) to form a counter-pressure transmission channel. It transmits the blanking force and unloading force through the machine tool bearing ring (13), the upper bearing ring push rod (12), the upper bearing ring of the mold frame (2) and the blanking force push rod (3); it transmits the counter-pressure and ejection force through the machine tool lower bearing ring (25), the lower bearing ring push rod (26), the mold frame lower bearing ring (6) and the counter-pressure push rod (7); and it transmits the fine blanking force through the mold frame lower mold base plate (8) fixed on the lower slide of the fine blanking machine tool and the modular fine blanking die lower mold part.

6. The modular fine blanking die structure of claim 1, wherein, The lower die base plate (8) of the die frame can be provided with several sets of rectangularly distributed positioning pin holes, and corresponding positioning stop pins (11) are inserted into the positioning pin holes. The modular fine blanking die can be roughly positioned on the die frame by three positioning stop pins (11). By selecting the positions of three positioning pin holes at different locations, the external dimensions of a set of modular fine blanking dies can be designed, and the external dimensions of a corresponding number of sets of serialized modular fine blanking dies can be obtained and standardized.

7. The modular fine blanking die structure of claim 1, wherein, The upper support ring (2) and the blank holder force push rod (3) of the mold frame are connected to the support ring push rod (12) and the support ring (13) of the machine tool through the support ring push rod (12) of the machine tool; the lower support ring (6) and the counter-pressure push rod (7) of the mold frame are connected to the lower support ring push rod (26) and the lower support ring (25) of the machine tool through the lower support ring push rod (26) of the machine tool, and the connection interface is designed as the hydraulic interface of the fine blanking hydraulic press.

8. The modular fine blanking die structure of claim 1, wherein, The unloading plate (19) is provided with a material positioning pin (20) and a material stop pin (27) on one side; the material positioning pin (20), the front guide plate (36) and the rear guide plate (28) together form a material guide limit, which facilitates material feeding; the material stop pin (27) is used for material feeding step distance positioning.

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