Die mechanism capable of achieving simultaneous downward punching and upward flanging

Abstract

The utility model discloses a die mechanism capable of simultaneously realizing lower punching and upper flanging, which relates to the technical field of stamping dies and comprises an upper die, a lower die and a material sheet, a punch, an upper die hole flanging insert and an upper die pressing core are arranged in the upper die, the top of the punch is fixedly connected onto an upper die seat through a bolt, and the upper die hole flanging insert is fixedly connected onto the lower die seat through a bolt. The lower end of the punch is matched with the lower die to complete punching, an upper die hole flanging insert fixedly connected to the upper die base is arranged on the periphery of the punch, an upper die pressing core installed on the side face of the upper die hole flanging insert in a sliding mode is arranged on the periphery of the upper die hole flanging insert, and the top of the upper die pressing core is elastically connected to the lower portion of the upper die base. The bottom of the upper die hole flanging insert is an insert molded surface, and the upper surface of the lower die is provided with a lower die hole flanging groove corresponding to the insert molded surface in position.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a die mechanism for realizing simultaneous lower punching and upper flanging. Background Art

[0002] In automotive sheet metal products, there are many products with upward holes due to product functional requirements. When arranging the stamping process steps, usually the lower punching process is carried out first, and then the upper flanging process is completed in two processes, which increases the process arrangement, mold cost and stamping cost, etc. Utility Model Content

[0003] The utility model aims to provide a die mechanism for realizing lower punching and upper flanging at the same time, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mold mechanism for realizing simultaneous lower punching and upper flanging, comprising an upper mold, a lower mold and a sheet, wherein the upper mold is provided with a punch, an upper mold hole flanging insert and an upper mold pressing core, the top of the punch is fixedly connected to the upper mold base by bolts, the lower end of the punch cooperates with the lower mold to complete the punching, the periphery of the punch is provided with an upper mold hole flanging insert fixedly connected to the upper mold base, the outer periphery of the upper mold hole flanging insert is provided with an upper mold pressing core slidably mounted on the side of the upper mold hole flanging insert, the top of the upper mold pressing core is elastically connected to the bottom of the upper mold base, the bottom of the upper mold hole flanging insert is an insert profile, and the upper surface of the lower mold is provided with a lower mold hole flanging groove corresponding to the position of the insert profile.

[0005] Preferably, the top of the upper die pressing core is connected to the upper die seat via a nitrogen spring.

[0006] Preferably, the bottom of the upper die seat and the outer side of the upper die hole insert are provided with limit blocks.

[0007] Preferably, the top of the upper die hole-turning insert is mounted on the limit block via a first hanging platform on the side, and the upper part of the punch is mounted on the upper die hole-turning insert via a second hanging platform.

[0008] Preferably, the insert profile is a convex structure, and the lower die hole-turning groove has a shape that matches the convex structure.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model can adopt mutually matching insert profiles and lower die hole-turning grooves, and continuously turn holes after the punch punches the sheet in the same process, thereby saving process steps, reducing costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front sectional view of the utility model;

[0012] Figure 2 This is a top sectional view of the upper die of the utility model;

[0013] Figure 3 This is a schematic diagram of the punching process in the mold closing process of the utility model;

[0014] Figure 4 It is a schematic diagram of the hole-turning process in the mold closing process of the utility model.

[0015] In the figure: 1—upper die, 1.1—punch, 1.2—upper die hole insert, 1.3—upper die core, 1.4—limit block, 1.5—nitrogen spring, 1.6—upper die seat,

[0016] 2—lower die, 3—insert surface, 4—lower die hole groove, 5—blank sheet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 3 The utility model provides a technical solution: a mold mechanism for realizing simultaneous lower punching and upper flanging, comprising an upper mold 1, a lower mold 2 and a sheet 5, wherein the upper mold 1 is provided with a punch 1.1, an upper mold flanging insert 1.2 and an upper mold pressing core 1.3, the top of the punch 1.1 is fixedly connected to an upper mold base 1.6 by bolts, the lower end of the punch 1.1 cooperates with the lower mold 2 to complete the punching, and the outer periphery of the punch 1.1 is provided with an upper mold flanging insert 1.2 fixedly connected to the upper mold base 1.6. 2, the outer periphery of the upper die hole-turning insert 1.2 is provided with an upper die pressing core 1.3 which is slidably mounted on the side of the upper die hole-turning insert 1.2, the top of the upper die pressing core 1.3 is elastically connected to the bottom of the upper die seat 1.6, the bottom of the upper die hole-turning insert 1.2 is an insert profile 3, the upper surface of the lower die 2 is provided with a lower die hole-turning groove 4 which corresponds to the position of the insert profile 3, by using the insert profile and the lower die hole-turning groove which match each other, after the punch punches the sheet material in the same process, the holes are turned continuously.

[0019] In this embodiment, the top of the upper die pressing core 1.3 is connected to the upper die base 1 through a nitrogen spring 1.5, and the nitrogen spring 1.5 can provide sufficient pre-pressure to prevent the sheet 5 from shifting.

[0020] In this embodiment, a limit block 1.4 is provided at the bottom of the upper die base 1.6 and the outer side of the upper die hole insert 1.2, and the limit block 1.4 limits the position of the upper die hole insert 1.2 and the punch 1.1 from the side to prevent their position deviation.

[0021] In this embodiment, the top of the upper die hole insert 1.2 is installed on the limit block 1.4 through the side hanger 1, and the upper part of the punch 1.1 is installed on the upper die hole insert 1.2 through the hanger 2. The upper and lower limit positions of the hangers 1 and 2 prevent the punch 1.1 and the upper die hole insert 1.2 from shifting up and down.

[0022] In this embodiment, the insert profile 3 is a convex structure, and the lower die hole turning groove 4 has a shape that matches the convex structure. By using the insert profile and the lower die hole turning groove that match each other, the punch punches the sheet and then continuously turns the holes in the same process.

[0023] Working principle: The upper die 1 is installed on the punching machine through the upper die seat 1.6, and the lower die 2 is also installed on the punching machine. Then, the sheet 5 is placed on the lower die 2, and the upper die 1 is pressed down. During the downward movement of the upper die 1, the upper die pressing core 1.3 first contacts the sheet 5. As the upper die 1 continues to move downward, the nitrogen spring 1.5 is compressed, so that the upper die pressing core 1.3 can press the sheet 5 to make it stable; the upper die 1 is continued to be moved downward, and the punch 1.1 punches the sheet 5. After the punching is completed, the upper die 1 is continued to be moved downward, so that the insert surface 3 at the bottom of the upper die hole-turning insert 1.2 is connected with the lower die hole-turning groove 4, and the hole-turning process of the sheet 5 after punching is completed.

[0024] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A mold mechanism for realizing simultaneous lower punching and upper flanging, characterized in that: The invention comprises an upper die (1), a lower die (2) and a sheet (5); the upper die (1) is provided with a punch (1.1), an upper die hole insert (1.2) and an upper die pressing core (1.3); the top of the punch (1.1) is fixedly connected to an upper die seat (1.6) by bolts; the lower end of the punch (1.1) cooperates with the lower die (2) to complete the punching; the periphery of the punch (1.1) is provided with an upper die fixedly connected to the upper die seat (1.6); The upper die hole turning insert (1.2) is provided with an upper die pressing core (1.3) slidably mounted on the side of the upper die hole turning insert (1.2) on its outer periphery, the top of the upper die pressing core (1.3) is elastically connected to the bottom of the upper die seat (1.6), the bottom of the upper die hole turning insert (1.2) is an insert profile (3), and the upper surface of the lower die (2) is provided with a lower die hole turning groove (4) corresponding to the position of the insert profile (3).

2. A mold mechanism for realizing simultaneous lower punching and upper flanging according to claim 1, characterized in that: The top of the upper die pressing core (1.3) is connected to the upper die seat (1.6) via a nitrogen spring (1.5).

3. A mold mechanism for realizing simultaneous lower punching and upper flanging according to claim 1, characterized in that: A limit block (1.4) is provided at the bottom of the upper die seat (1.6) and the outer side of the upper die hole insert (1.2).

4. A die mechanism for achieving simultaneous lower punching and upper flanging according to claim 3, characterized in that: The top of the upper die hole-turning insert (1.2) is mounted on the limit block (1.4) via a first hanging platform on the side, and the upper part of the punch (1.1) is mounted on the upper die hole-turning insert (1.2) via a second hanging platform.

5. The mold mechanism for realizing simultaneous lower punching and upper flanging according to claim 1, characterized in that: The insert profile (3) is a convex structure, and the lower die hole recess (4) has a shape that matches the convex structure.

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