Fine blanking die for die-casting metal piece

Abstract

The utility model discloses a fine blanking die for a die-casting metal piece, which comprises a die holder, a die supporting plate, a limiting pressing die, a punching rod, a punching block, a pressing plate and a limiting pressing block assembly, the die supporting plate is arranged on the upper end face of the die holder, and the upper end face of the die supporting plate is arranged to be a lower profiling cavity face of the lower end face of a signal box socket shell. A lower punching cutting edge is arranged at the position, right opposite to a to-be-punched hole or a to-be-punched groove of the signal box socket shell, of the upper end face of the die supporting plate, and an upper profiling cavity face of the upper surface of the signal box socket shell is arranged on the lower surface of the limiting pressing die. A positioning hole excess material, a screw joint hole excess material and a through groove excess material of a to-be-punched die-casting metal piece are punched and blanked at a time, buckles on the two sides of the to-be-punched die-casting metal piece are pressed and positioned in the horizontal direction by means of an electric push rod which is horizontally pushed in the lateral direction, the punching and separating accuracy of the excess materials of a punching signal box shell is guaranteed, and the punching efficiency is improved. And the device is practical and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of die equipment, and particularly relates to a fine blanking die for die-casting metal parts. Background Art

[0002] There is a die-cast metal part socket shell used in a communication base station project at present, which can ensure that the communication interface is firmly connected and not interfered by the external environment, and is dust-proof, rain-proof and wind-proof. Since the die-cast metal part is provided with symmetrically arranged buckles, positioning holes, screw holes and a through groove for avoiding the connection of the communication line plug on the left and right, it is relatively difficult to form the whole plug-in shell by using a die-casting mold at one time. In order to reduce the manufacturing cost of the die-casting mold and improve the qualified rate of die-casting forming, we adopt a production process of die-casting and blanking double processes to realize the production of the plug-in shell. Therefore, when the die-casting forming is completed once, the positioning holes, screw holes and the through groove for avoiding the connection of the communication line plug are still not removed, and it is necessary to use a fine blanking die to punch the remaining materials for the second time. Therefore, it is necessary for us to design a fine blanking die for the die-cast blank obtained by the one-time forming to perform the secondary punching of the remaining materials, so as to ensure the forming precision and quality of the die-cast metal part after two processes and improve the product qualified rate. Summary of the Utility Model

[0003] The purpose of the utility model is: in order to perform secondary high-precision punching of the remaining materials on the die-cast socket shell, to ensure the forming precision and quality of the die-cast metal part after two processes, and to meet the technical requirements for improving the product qualified rate, we design and provide a fine blanking die for die-casting metal parts.

[0004] The technical solution adopted to solve the above problems is:

[0005] A fine blanking die for die-casting metal parts, which includes a die base, a die carrier plate, a limit die, a punch rod, a punch block and a pressing plate, and a limit block assembly for assisting the buckles on both sides of the die-cast metal part to be punched.

[0006] The die carrier plate is arranged on the upper end surface of the die base, and the upper end surface of the die carrier plate is set as a lower profiling cavity surface of the lower end surface of the die-cast metal part to be punched, which is used to support and position the lower end surface of the die-cast metal part to be punched. And a lower punching edge is arranged at the position of the hole or groove to be punched of the die-cast metal part to be punched on the upper end surface of the die carrier plate, so as to cooperate with the punch rod and the punch block to perform punching in the up and down alignment.

[0007] The punch rod and the punch block are vertically arranged on the upper end surface of the die-cast metal part to be punched, and are positioned by the limit holes and limit grooves opened by the limit die. The punch rod includes a positioning punch rod for the positioning hole of the die-cast metal part to be punched and a screw punch rod for the screw hole of the die-cast metal part to be punched. The punch block includes a plurality of through groove punch blocks for the through groove of the die-cast metal part to be punched.

[0008] The lower surface of the limit pressing die is provided with an upper profiling cavity surface facing the upper surface of the die-casting metal part to be punched, and it is pressed and combined with the lower profiling cavity surface of the die carrier plate in an up-and-down alignment manner to punch and cut off the positioning hole surplus material, screw connection hole surplus material, and through groove surplus material of the die-casting metal part to be punched at one time.

[0009] The limit pressing block assembly includes a positioning pressing block that performs a vertical direction positioning and pressing action on the two sides of the die-casting metal part to be punched and an electric push rod that advances laterally horizontally. The positioning pressing block cooperates with the electric push rod that advances laterally horizontally to press and position the two sides of the die-casting metal part to be punched in the horizontal direction.

[0010] Furthermore, the limit pressing die and the pressing plate are cooperated by a guide pillar and guide sleeve assembly arranged at the four corners for stable lifting and sliding movements to ensure the punching accuracy in the vertical direction.

[0011] Furthermore, the upper part of the pressing plate is connected to the die mold frame and is assisted by a hydraulic cylinder to provide a downward punching force to the pressing plate.

[0012] The beneficial effects of the present utility model are:

[0013] The fine blanking die for the die-casting metal part punches and cuts off the positioning hole surplus material, screw connection hole surplus material, and through groove surplus material of the die-casting metal part to be punched at one time through the synchronous punching actions of several punching rods and punching blocks, and with the aid of the electric push rod that advances laterally horizontally, presses and positions the two sides of the die-casting metal part to be punched in the horizontal direction, ensuring the accuracy of the separation of each surplus material of the punched die-casting metal part, improving the qualified rate of the finished product, and being practical and convenient. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the fine blanking die for the die-casting metal part in the embodiment;

[0015] Figure 2 It is Figure 1 the structural schematic diagram of the punching rods and punching blocks described in

[0016] Figure 3 It is Figure 2 the partial enlarged view at A in

[0017] Figure 4 It is the side elevation schematic diagram of the die-casting metal part to be punched in the embodiment;

[0018] Figure 5 It is the side depression schematic diagram of the die-casting metal part to be punched in the embodiment;

[0019] Figure 6 It is the structural schematic diagram of the positioning hole surplus material, screw connection hole surplus material, and through groove surplus material being punched and cut off in the embodiment;

[0020] Among them, 1 - die holder, 2 - limit pressing die, 3 - pressing plate, 4 - first punching block, 5 - right positioning pressing block, 6 - die carrier plate, 7 - die-cast metal part, 8 - left positioning pressing block, 9 - through slot punching block, 10 - first positioning punching rod, 11 - second positioning punching rod, 12 - guide pillar and bushing assembly, 13 - electric push rod, 14 - first positioning hole, 15 - first threaded hole, 16 - buckle, 17 - first through slot, 18 - second through slot. Detailed implementation manner

[0021] The technical solution of the present utility model will be clearly and completely described below in an embodiment manner in conjunction with the accompanying drawings.

[0022] Please refer to Figures 1 to 6 , this embodiment provides a fine blanking die for die-cast metal parts, including a die holder 1, a die carrier plate 6, a limit pressing die 2, a first positioning punching rod 10, a second positioning punching rod 11, a through slot punching block 9 and a pressing plate 3, as well as a limit pressing block assembly for assisting the buckles 16 on both sides of the die-cast metal part 7 to be punched. Through the synchronous punching actions of multiple positioning punching rods and the through slot punching block 9, the positioning hole residue, screw connection hole residue and through slot residue of the die-cast metal part to be punched are punched and cut off at one time, and with the help of an electric push rod that advances horizontally laterally, the buckles on both sides of the die-cast metal part to be punched are pressed and positioned in the horizontal direction, ensuring the accuracy of the punching and separation of each residue of the die-cast metal part, and improving the qualified rate of finished products.

[0023] Refer to Figure 2 and Figure 3 , the die carrier plate 6 is arranged on the upper end surface of the die holder 1, and the upper end surface of the die carrier plate 6 is set as a lower profiling cavity surface of the lower end surface of the die-cast metal part 7 to be punched, for supporting and positioning the lower end surface of the die-cast metal part 7 to be punched, and a lower punching edge is arranged at the position of the punching hole or punching slot of the die-cast metal part 7 to be punched on the upper end surface of the die carrier plate 6 to cooperate with the punching rod and the punching block to perform punching in the up and down alignment.

[0024] Refer to Figure 2 and Figure 6 , in order to ensure that all positioning punching rods, through slot punching blocks 9 and positioning pressing blocks accurately perform punching actions in a vertical posture, the punching rods and punching blocks are vertically arranged on the upper end surface of the die-cast metal part 7 to be punched, and are positioned by the positioning holes and positioning slots opened by the limit pressing die 2. The punching rods include positioning punching rods set for the positioning holes of the die-cast metal part 7 to be punched and screw connection punching rods set for the screw connection holes of the die-cast metal part 7 to be punched. The punching blocks include two through slot punching blocks 9 set for the through slots of the die-cast metal part 7 to be punched.

[0025] To ensure that the die-cast metal part 7 to be punched does not deform or break during the punching process, an upper profiling cavity surface facing the upper surface of the die-cast metal part 7 to be punched is provided on the lower surface of the limit pressing die 2, and it is pressed and combined with the lower profiling cavity surface of the die carrier plate 6 in an up-and-down alignment manner to punch and cut off the positioning hole residue, screw connection hole residue, and through groove residue of the die-cast metal part 7 to be punched at one time.

[0026] To ensure that the buckle mechanisms on both sides of the die-cast metal part 7 to be punched are not affected by the punching, protect the buckle structure from damage, and assist in positioning the die-cast metal part 7 to be punched, the limit pressing block assembly includes positioning pressing blocks that perform vertical positioning pressing actions on the buckles 16 on both sides of the die-cast metal part 7 to be punched and electric push rods 13 that push laterally horizontally. The positioning pressing blocks cooperate with the laterally horizontally pushing electric push rods 13 to press and position the buckles 16 on both sides of the die-cast metal part 7 to be punched in the horizontal direction.

[0027] Refer to Figure 2 and Figure 6 As shown in, the limit pressing die 2 and the pressing plate 3 are cooperated by the guide pillar and guide sleeve assembly 12 provided at the four corners for stable lifting and sliding movements to ensure the punching accuracy in the vertical direction.

[0028] A further implementation scheme is that the upper part of the pressing plate 3 is connected to the die mold frame and is assisted by a hydraulic cylinder to provide a downward punching force to the pressing plate 3.

[0029] The working process is as follows:

[0030] Before the pressing plate 3 is lifted by the mold frame transmission mechanism, the die-cast metal part 7 is placed on the die carrier plate 6. After being pre-positioned by the electric push rods 13 that push horizontally on both sides, the mold is closed by the transmission mechanism, and the positions of all positioning punching rods, through groove punching blocks 9, and positioning pressing blocks are limited by the limit pressing plate to ensure the punching stroke accuracy. The pressing plate applies force to press down all the positioning punching rods, through groove punching blocks 9, and positioning pressing blocks to punch and cut off the positioning hole residue, screw connection hole residue, and through groove residue of all the parts to be punched of the die-cast metal part 7 at one time.

[0031] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made without departing from the gist of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine blanking die for die-cast metal parts, comprising a die base (1), a die carrier plate (6), a limit pressing die (2), a punch rod, a punch block and a pressing plate (3), and a limit pressing block assembly for assisting the buckles (16) on both sides of the socket housing of the signal box to be punched. It is characterized in that: The die carrier plate (6) is arranged on the upper end surface of the die base (1). The upper end surface of the die carrier plate (6) is set as a lower profiling cavity surface of the lower end surface of the die-cast metal part (7) to be punched. A lower punching edge is arranged at the position of the punching hole or punching groove of the die-cast metal part (7) to be punched on the upper end surface of the die carrier plate (6). The punch rod and the punch block are vertically arranged on the upper end surface of the die-cast metal part (7) to be punched and are positioned by the limit holes and limit grooves opened by the limit pressing die (2). The punch rod includes a positioning punch rod arranged for the positioning hole of the die-cast metal part (7) to be punched and a screwing punch rod arranged for the screwing hole of the die-cast metal part (7) to be punched. The punch block includes a plurality of through groove punch blocks arranged for the through groove of the die-cast metal part (7) to be punched. The lower surface of the limit pressing die (2) is provided with an upper profiling cavity surface facing the upper surface of the die-cast metal part (7) to be punched, and is pressed and combined with the lower profiling cavity surface of the die carrier plate (6) in an up-and-down alignment manner to punch and cut off the positioning hole residue, screwing hole residue and through groove residue of the die-cast metal part (7) to be punched at one time.

2. The fine blanking die for die-cast metal parts according to claim 1, characterized in that: The limit pressing block assembly includes a positioning pressing block that performs a vertical positioning pressing action on the buckles (16) on both sides of the die-cast metal part (7) to be punched and an electric push rod (13) that advances laterally and horizontally. The positioning pressing block cooperates with the laterally and horizontally advancing electric push rod (13) to press and position the buckles (16) on both sides of the die-cast metal part (7) to be punched in the horizontal direction.

3. The fine blanking die for die-cast metal parts according to claim 1, characterized in that: The limit pressing die (2) and the pressing plate (3) are cooperated by a guide pillar and guide sleeve assembly (12) arranged at the four corners.

4. The fine blanking die for die-cast metal parts according to claim 1, characterized in that: The upper part of the pressing plate (3) is connected to the die mold frame and is assisted by a hydraulic cylinder to provide a downward punching force to the pressing plate (3).

Images