Double reverse hole flanging raising die

Abstract

The invention relates to a double reverse hole flanging and raising die which comprises an upper die plate and a lower die plate which are vertically opposite to each other, a stripper plate is vertically and movably arranged below the upper die plate, and a downward hole flanging needle and an upper discharging ejector pin which downwards penetrate through the stripper plate are vertically arranged on the lower surface of the upper die plate; an upward hole flanging needle and a lower discharging ejector pin are vertically arranged on the upper surface of the lower die plate. An upper punching hole matched with the upward hole flanging needle is formed in the lower surface of the stripper plate for avoiding the avoiding hole of the upper unloading ejector pin; a lower punching hole corresponding to the downward hole flanging needle is formed in the upper surface of the lower template; the whole structure is simple, downward and upward hole flanging machining can be synchronously achieved during machining, the equipment cost is greatly saved, the machining procedures are reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, in particular to a double reverse punching and convexing die. Background Art

[0002] In sheet metal die stamping technology, due to the sharp increase in various manufacturing costs and the premise that product quality must be guaranteed, the only way to improve efficiency and save mold and production costs is to improve benefits. The traditional close-range reverse punching (convex) form is generally divided into two processes. The first step is to punch the punching (convex) in the same direction, and the second step is to punch the punching (convex) in the opposite direction. However, this method will result in an extra process, which is not conducive to saving material and mold costs. Therefore, it is necessary to design a new mold to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a double reverse hole punching die to address the deficiencies in the prior art, and the double reverse hole punching die can well solve the above problems.

[0004] In order to achieve the above requirements, the technical solution adopted by the present invention to solve its technical problems is:

[0005] A double reverse punching and embossing die is provided, comprising an upper template and a lower template which are opposite to each other, a stripping plate is movably provided below the upper template, a downward punching needle and an upper discharge ejector pin which penetrate downwardly through the stripping plate are vertically provided on the lower surface of the upper template; an upward punching needle and a lower discharge ejector pin are vertically provided on the upper surface of the lower template; an avoidance hole on the lower surface of the stripping plate which avoids the upper discharge ejector pin forms an upper punching hole which cooperates with the upward punching needle, and a lower punching hole is provided on the upper surface of the lower template corresponding to the downward punching needle.

[0006] The double reverse hole punching mold described in the present invention, wherein the lower template includes a lower mold body, the upper surface of the lower mold body is provided with a through hole penetrating its lower surface; the lower template also includes a mold core body embedded in the through hole, and a lower pad arranged at the bottom of the lower mold body; the upward hole punching needle, the lower unloading ejector needle and the lower punching hole are all arranged on the mold core body.

[0007] The double reverse hole punching mold described in the present invention, wherein the mold core body includes a pressure block and a lower mold insert fixing block which are arranged in a upper and lower manner, the upper surface of the pressure block is flush with the upper surface of the lower mold body, and the pressure block and the lower mold insert fixing block are fixed to the upper surface of the lower pad by the same bolt.

[0008] The double reverse hole punching die described in the present invention is characterized in that a movable window is vertically penetrated through the upper surface of the pressing block, a mounting hole is vertically penetrated through the lower die insert fixed block, a downward hole punching die is provided in the mounting hole, a lower punching hole adapted to the downward hole punching needle is vertically penetrated through the downward hole punching die, and the upper end of the downward hole punching die extends into the movable window and is flush with the upper surface of the pressing block.

[0009] The double reverse hole punching mold described in the present invention, wherein the upper end of the upward hole-turning needle extends out of the upper surface of the pressing block, and a stripping guide sleeve is provided in the movable window to slide up and down with the needle, and a movable gap is provided between the stripping guide sleeve and the upper surface of the lower mold insert fixed block; the stripping guide sleeve is provided with a first movable hole and a second movable hole for the upward relative movement of the upward hole-turning needle and the downward hole-turning die, and the upper end of the lower unloading ejector pin abuts against the lower end of the stripping guide sleeve; when assembled in place, the upper end of the stripping guide sleeve extends out of the upper surface of the upper body, and the upper end of the upward hole-turning needle is located in the first movable hole.

[0010] The double reverse hole punching die of the present invention comprises two downward hole punching concave dies and two downward hole punching needles, and the two downward hole punching needles are arranged side by side on both sides of the upper discharge ejector needle.

[0011] The double reverse punching and convexing die of the present invention has a limit block protruding from the lower end of the side wall of the stripping guide sleeve, and a first movable groove for the limit block to move up and down is provided on the side wall of the movable window.

[0012] The double reverse hole punching die described in the present invention, wherein a lower die seat is provided on the lower surface of the lower pad, and a second movable groove corresponding to the lower unloading ejector pin is provided on the upper surface of the lower die seat for its up and down movement, and a first elastic member is provided in the second movable groove to provide an upward elastic reset force for the lower unloading ejector pin.

[0013] The double reverse punching and embossing die of the present invention is characterized in that the upper die plate is also provided with a second elastic member for providing a downward elastic restoring force for the stripping plate.

[0014] The double reverse hole punching mold described in the present invention, wherein an upper mold base is provided on the upper surface of the upper mold plate, a third movable groove is provided on the lower surface of the upper mold base corresponding to the upper unloading ejector pin, and a third elastic member is provided in the third movable groove for providing a downward elastic reset force for the upper unloading ejector pin.

[0015] The beneficial effects of the present invention are as follows: the present invention has a simple overall structure, and during processing, downward and upward hole turning processing can be achieved simultaneously, which greatly saves equipment costs, reduces processing procedures, and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 It is a cross-sectional view of the present invention during mold closing.

[0018] Figure 2 yes Figure 1 A magnified view of the local structure. DETAILED DESCRIPTION

[0019] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0022] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0024] The double reverse punching and convexing die of the preferred embodiment of the present invention is as follows: Figure 1-2 As shown, it includes an upper template 10 and a lower template 20 which are opposite to each other, a stripping plate 30 is movably provided below the upper template 10, and a downward turning needle 40 and an upper unloading ejector pin 50 which downwardly penetrate the stripping plate 30 are vertically provided on the lower surface of the upper template 10; an upward turning needle 60 and a lower unloading ejector pin 70 are vertically provided on the upper surface of the lower template 20; an avoidance hole 31 on the lower surface of the stripping plate 30 for avoiding the upper unloading ejector pin 50 forms an upper punching hole 80 which cooperates with the upward turning needle 60, and a lower punching hole 90 is provided on the upper surface of the lower template 20 corresponding to the downward turning needle 40; the overall structure of the present invention is simple. During processing, the upward turning needle and the downward turning needle can cooperate to simultaneously realize the downward and upward turning (convex rice 301) processing of the sheet metal workpiece 300, which greatly saves equipment cost, reduces processing procedures, and improves processing efficiency.

[0025] In this embodiment, the lower template 20 includes a lower mold body 21, and the upper surface of the lower mold body 21 is provided with a through hole 2a penetrating its lower surface; the lower mold body 20 also includes a mold core body 22 embedded in the through hole 2a, and a lower pad 23 arranged at the bottom of the lower mold body 21; the upward hole-turning needle 60, the lower unloading ejector pin 70 and the lower punching hole 90 are all arranged on the mold core body 22; specifically, the mold core body 22 includes a pressing block 221 and a lower mold insert fixing block 222 which are arranged in affixed relationship with each other, the upper surface of the pressing block 221 is flush with the upper surface of the lower mold body 21, and the pressing block 221 and the lower mold insert fixing block 222 are both fixed to the upper surface of the lower pad 23 by the same bolt 100; further, a movable window 22a is vertically penetrated on the upper surface of the pressing block 221, and a mounting hole 22b is vertically penetrated on the lower mold insert fixing block 222, and a downward hole-turning die 110 is provided in the mounting hole 22b, and the downward hole-turning die 110 is provided in the mounting hole 22b. The die 110 is specifically columnar; a lower punch hole 90 adapted to the downward-turning hole needle 40 is vertically penetrated through the downward-turning hole die 110, and the upper end of the downward-turning hole die 110 extends into the movable window 22a and is flush with the upper surface of the pressing block 221; wherein, the upper end of the upward-turning hole needle 60 extends out of the upper surface of the pressing block 221, and a stripping guide sleeve 120 is provided in the movable window 22a to slide up and down with it, and a movable gap 130 is provided between the stripping guide sleeve 120 and the upper surface of the lower die insert fixed block 222; the stripping guide sleeve 120 is provided with a first movable hole 121 and a second movable hole 122 for the upward-turning hole needle 60 and the downward-turning hole die 110 to move relative to each other up and down, and the upper end of the lower unloading ejector pin 70 is against the lower end of the stripping guide sleeve 120; when assembled in place, the upper end of the stripping guide sleeve 120 extends out of the upper surface of the upper body, and the upper end of the upward-turning hole needle 60 is located in the first movable hole 121.

[0026] In the present embodiment, two downward hole-turning dies 110 and two downward hole-turning needles 40 are provided, and the two downward hole-turning needles 40 are arranged side by side on both sides of the upper unloading ejector pin 50 to further improve the processing efficiency. At the same time, symmetrical forces can be applied to the upward hole-turning needle 60 to ensure the accuracy of the hole turning and avoid the hole turning skewness caused by stress fatigue of the mold.

[0027] In this embodiment, a limit block 140 is protruding from the lower end of the side wall of the stripping guide sleeve 120, and a first movable groove 150 is provided on the side wall of the movable window 22a for the limit block 140 to move up and down, so as to guide and limit the stripping guide sleeve 120.

[0028] In this embodiment, a lower die base 160 is provided on the lower surface of the lower pad 23, and a second movable groove 161 corresponding to the lower unloading ejector pin 70 is provided on the upper surface of the lower die base 160 for its up and down movement. A first elastic member 170 is provided in the second movable groove 161 for providing an upward elastic reset force for the lower unloading ejector pin 70 to ensure that the stripping guide sleeve 120 can move upward and out of the movable window 22a after the hole is turned, thereby ensuring that the workpiece is separated from the upward turning needle 60 in time.

[0029] In this embodiment, the upper template 10 is also provided with a second elastic member 180 for providing a downward elastic reset force for the stripping plate 30. Furthermore, an upper mold base 200 is provided on the upper surface of the upper mold base 200, and a third movable groove 190 is provided on the lower surface of the upper mold base 200 corresponding to the upper unloading ejector pin 50. The third movable groove 190 is provided with a third elastic member 210 for providing a downward elastic reset force for the upper unloading ejector pin 50 to ensure that the workpiece is separated from the downward flipping needle 40 in time; wherein the first elastic member 170, the second elastic member 180 and the third elastic member are all springs, and of course they can also be gas springs or adaptive soft rubber pads, etc.

[0030] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A double reverse punching die, characterized in that: It comprises an upper template and a lower template which are opposite to each other, a stripping plate is movably provided below the upper template, a downward-turning hole needle and an upper unloading ejector pin which penetrate downwardly through the stripping plate are vertically provided on the lower surface of the upper template; an upward-turning hole needle and a lower unloading ejector pin are vertically provided on the upper surface of the lower template; an avoidance hole on the lower surface of the stripping plate which avoids the upper unloading ejector pin forms an upper punching hole which cooperates with the upward-turning hole needle, and a lower punching hole is provided on the upper surface of the lower template corresponding to the downward-turning hole needle.

2. The double reverse punching and convexing die according to claim 1, characterized in that: The lower template includes a lower mold body, and the upper surface of the lower mold body is provided with a through hole penetrating the lower surface thereof; the lower mold body also includes a mold core body embedded in the through hole, and a lower pad arranged at the bottom of the lower mold body; the upward hole-turning needle, the lower unloading ejector needle and the lower punching hole are all arranged on the mold core body.

3. The double reverse punching and convexing die according to claim 2, characterized in that: The mold core body includes a pressing block and a lower mold insert fixing block which are arranged in a close relationship with each other. The upper surface of the pressing block is flush with the upper surface of the lower mold body. The pressing block and the lower mold insert fixing block are both fixed to the upper surface of the lower pad by the same bolt.

4. The double reverse punching and convexing die according to claim 3, characterized in that: A movable window is vertically penetrated through the upper surface of the pressing block, a mounting hole is vertically penetrated through the lower die insert fixed block, a downward-turned hole die is provided in the mounting hole, a lower punch hole adapted to the downward-turned hole needle is vertically penetrated through the downward-turned hole die, and the upper end of the downward-turned hole die extends into the movable window and is flush with the upper surface of the pressing block.

5. The double reverse punching and convexing die according to claim 4, characterized in that: The upper end of the upward-flipping hole needle extends out of the upper surface of the pressing block, and a stripping guide sleeve is provided in the movable window to slide up and down with the stripping guide sleeve, and a movable gap is provided between the stripping guide sleeve and the upper surface of the lower die insert fixed block; the stripping guide sleeve is provided with a first movable hole and a second movable hole for the upward-flipping hole needle and the downward-flipping hole die to move relative to each other up and down, and the upper end of the lower unloading ejector pin abuts against the lower end of the stripping guide sleeve; when assembled in place, the upper end of the stripping guide sleeve extends out of the upper surface of the upper body, and the upper end of the upward-flipping hole needle is located in the first movable hole.

6. The double reverse punching and convexing die according to claim 5, characterized in that: The downward hole-turning concave die and the downward hole-turning needle are both provided with two, and the two downward hole-turning needles are arranged side by side on both sides of the upper discharge ejector needle.

7. The double reverse punching and convexing die according to claim 5, characterized in that: A limiting block is protruding from the lower end of the side wall of the stripping guide sleeve, and a first movable groove for the limiting block to move up and down is provided on the side wall of the movable window.

8. The double reverse punching and convexing die according to claim 5, characterized in that: A lower die seat is provided on the lower surface of the lower pad, and a second movable groove corresponding to the lower discharge ejector pin is provided on the upper surface of the lower die seat for the lower discharge ejector pin to move up and down. A first elastic member is provided in the second movable groove to provide an upward elastic reset force for the lower discharge ejector pin.

9. The double reverse punching and convexing die according to claim 1, characterized in that: The upper template is also provided with a second elastic member for providing a downward elastic restoring force for the stripping plate.

10. The double reverse punching and convexing die according to claim 1, characterized in that: An upper die seat is provided on the upper surface of the upper die plate, a third movable groove is provided on the lower surface of the upper die seat corresponding to the upper discharge ejector pin, and a third elastic member is provided in the third movable groove to provide a downward elastic restoring force for the upper discharge ejector pin.

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