Thick material necking forming separation structure

Abstract

The utility model discloses a thick material necking forming separation structure which comprises an upper die, a discharging structure and a lower die. The upper die comprises a nitrogen spring and a guide punch installed at the bottom of the nitrogen spring, an ejector rod is slidably connected into an inner cavity in the middle of the guide punch, an ejector spring is connected to the top of the ejector rod, a first set screw plug is arranged on the upper portion of the ejector spring, and the first set screw plug is in threaded connection to the top of the guide punch. The discharging structure is located between the upper die and the lower die, a necking forming insert is arranged in the middle of the discharging structure, a forming female die is arranged in the middle of the lower die, and a part pushing device is arranged at the bottom of the forming female die. According to the thick material necking forming separation structure, parts are easy to assemble; the manufacturing cost of the mold can be effectively reduced; and a subsequent necking forming process is canceled, so that the production efficiency is improved, and the manufacturing cost of the product is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of progressive die design, in particular to a thick material shrinkage forming separation structure. Background Art

[0002] Progressive dies are currently an advanced tooling approach for hardware component production. They automate multiple production steps, making them suitable for high-volume stamping production. They deliver high-quality parts, high production efficiency, and reduce the number of operators, making them the current trend in mold design. When designing parts with necking, the mold design typically involves first separating the parts, then manually necking them using a single-step mold. This significantly increases mold development costs, and the increased number of steps involved in production makes product quality more difficult to control. Utility Model Content

[0003] The purpose of the utility model is to provide a thick material shrinkage molding separation structure to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a thick material shrinkage forming separation structure, comprising an upper die, a discharge structure and a lower die;

[0005] The upper die includes a nitrogen spring and a guide punch installed at the bottom of the nitrogen spring. A push rod is slidably connected to the middle inner cavity of the guide punch. The top of the push rod is connected to the top spring. A first screw plug is provided on the top of the top spring. The first screw plug is threadedly connected to the top of the guide punch.

[0006] The discharge structure is located between the upper die and the lower die, and a shrinkage forming insert is provided in the middle of the discharge structure;

[0007] A forming die is arranged in the middle of the lower die, and a piece pusher is arranged at the bottom of the forming die.

[0008] Preferably, the upper die further comprises an upper die base, an upper pad and a fixed plate are installed at the bottom of the upper die base, and the nitrogen spring is installed in the middle of the upper die base, the upper pad and the fixed plate.

[0009] Preferably, a fixing plate insert is provided in the middle of the fixing plate, the fixing plate insert is fixedly connected to the fixing plate, and the fixing plate insert limits the guide punch in the vertical upward direction.

[0010] Preferably, the unloading structure includes a unloading back plate and a unloading plate, the unloading plate is arranged at the lower part of the unloading back plate, and the lock forming insert is arranged in the middle part of the unloading plate.

[0011] Preferably, the lower mold includes a lower mold plate, a lower fixed plate, a lower pad, and a lower mold base installed in sequence along the height downward. The forming die is located in the lower mold plate. The pusher is slidingly connected to the forming die. A rectangular spring is installed at the bottom of the pusher, and a second screw plug is installed at the bottom of the rectangular spring.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a thick material shrinkage forming separation structure, which has simple parts assembly and can effectively reduce the mold manufacturing cost; it eliminates the post-production shrinkage forming process, thereby improving production efficiency and reducing product manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the utility model's necking-molding thick material product;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model in the closed mold state;

[0016] Figure 3 This is the structure of the utility model in the mold opening state;

[0017] Figure 4 This is a schematic diagram of the installation structure details of the nitrogen spring of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] As shown in the figure, this embodiment provides a thick material shrinkage molding separation structure, which is used in a molding mold and includes: an upper mold 10, a discharge structure 20, and a lower mold 30.

[0020] Depend on Figure 2 As shown, the upper die 10 includes an upper die base 100, an upper pad 101, a fixed plate 102, a nitrogen spring 103, a fixed plate insert 104, a guide punch 105, a push rod 106, a push spring 107, and a first screw plug 108;

[0021] Depend on Figure 2 As shown, the unloading structure 20 includes a unloading back plate 201, a unloading plate 202, and a shrinkage molding insert 203;

[0022] Depend on Figure 2As shown, the lower die 30 includes a lower die plate 301, a lower fixing plate 302, a lower pad 303, a lower die base 304, a forming die 305, a pusher 306, a rectangular spring 307, and a second screw plug 308;

[0023] Depend on Figure 3 As shown, the guide punch 105 is equipped with a push rod 106, a push spring 107, and a first screw plug 108 to fix the push spring so that it does not move. This structure is to ensure that the product is not carried onto the upper mold after molding and separation. The fixed plate insert 104 provides a limit for the guide punch 105 in the vertical direction. The fixed plate insert 104 is fixed to the fixed plate 102 through the insert hole; a fixed nitrogen spring 103 is installed on the upper mold base 100. As shown in the figure, the sliding distance of the guide punch 105 is formed between the limit position of the fixed plate insert 104 and the nitrogen spring 103. For details, refer to Figure 4 As shown, point A in the figure is the limiting position of the fixed plate insert 104 to the guide punch 105.

[0024] The upper die base 100, the upper pad 101 and the fixed plate 102 are connected by hexagon socket screws. The shrinkage molding insert 203 is fixed on the stripper plate 202 through the insert hole, and the stripper plate 202 and the stripper back plate 201 are connected by hexagon socket screws.

[0025] A pusher 306 is installed within the forming die 305. The die 305 is then secured to the lower die plate 301 via the insert holes. The lower die plate 301, lower fixing plate 302, lower backing plate 303, and lower die base 304 are connected via hexagon socket head screws. A rectangular spring 307 is installed beneath the pusher 306, which is locked with a second screw plug 308 to prevent movement.

[0026] Depend on Figure 2 、 Figure 3 As shown, in order to enable the guide punch 105 in the product shrinkage forming and separation station to easily push the formed product off the blank and separate it from the material strip, the blank must be half-sheared (the half-shear structure does not involve shrinkage forming and is therefore not elaborated).

[0027] When the mold changes from an open state to a closed state, the upper mold 10 and the discharge structure 20 first move downward as a whole. When the discharge structure 20 contacts the lower mold 30, the counter-pressure structure in the lower mold pushes the discharge structure 20 back until the discharge back plate 201 in the discharge structure 20 is in close contact with the fixed plate 102 in the upper mold 10. At this time, the guide punch 105 has completely exposed the shrinkage molding insert 203 in the discharge plate. As the press continues to move downward, the guide punch 105 has also completely entered the product 400 cavity. At this time, the guide punch 105 plays a role of rough guidance. The press continues to move downward, and the nitrogen spring 103 installed in the upper mold base 100 applies force to the guide punch 105, and then the half-sheared blank is ejected through the floating structure of the progressive die. At this time, the blank is completely separated from the material strip. The press continues to move downward, and the separated blank continues to move downward with the guide punch 105. Since the mouth of the forming die 305 has a chamfered R angle, the part will also position the blank at this time. The guide punch 105 presses the blank into the forming die 305. Since the force applied by the nitrogen spring 103 in the upper die assembly 10 is greater than the initial force of the rectangular spring 307 in the lower die 30, the guide punch 105 can press the blank to push the pusher 306 installed in the forming die 305 downward until the lower end of the pusher 306 is in close contact with the upper surface of the lower pad 303. At this time, the blank also enters the forming die 305, exposing only the shrinkage forming part of the blank. As the press continues to move downward, when it moves to the lower limit point, the shrinkage forming insert 203 installed in the discharge plate 202 completes the shrinkage forming action of the blank. At this time, the blank has been stamped into a product. After passing the lower limit point, the press moves upward, the mold opens, and the upper mold moves upward. The product in the forming die 305 is also pushed out of the surface of the forming die 305 by the pusher 306, and then the product is blown out of the mold by the blowing structure installed in the mold (the blowing structure does not involve shrinkage and is therefore not explained).

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thick material necking forming separation structure is used in a forming mold, characterized by: It comprises an upper die (10), a discharge structure (20) and a lower die (30); The upper die (10) includes a nitrogen spring (103) and a guide punch (105) installed at the bottom of the nitrogen spring (103); a push rod (106) is slidably connected in the middle inner cavity of the guide punch (105); a top spring (107) is connected to the top of the push rod (106); a first screw plug (108) is provided on the top of the top spring (107); and the first screw plug (108) is threadedly connected to the top of the guide punch (105); The unloading structure (20) is located between the upper mold (10) and the lower mold (30), and a shrinkage molding insert (203) is provided in the middle of the unloading structure (20); A forming die (305) is provided in the middle of the lower die (30), and a piece pusher (306) is provided at the bottom of the forming die (305).

2. The thick material shrinkage forming separation structure according to claim 1, characterized in that: The upper die (10) further comprises an upper die base (100), an upper pad (101) and a fixed plate (102) are installed at the bottom of the upper die base (100), and a nitrogen spring (103) is installed in the middle of the upper die base (100), the upper pad (101) and the fixed plate (102).

3. The thick material shrinkage forming separation structure according to claim 1, characterized in that: A fixed plate insert (104) is provided in the middle of the fixed plate (102), the fixed plate insert (104) is fixedly connected to the fixed plate (102), and the fixed plate insert (104) limits the guide punch (105) in a vertically upward direction.

4. The thick material shrinkage forming separation structure according to claim 3, characterized in that: The unloading structure (20) comprises a unloading back plate (201) and a unloading plate (202), wherein the unloading plate (202) is arranged at the lower part of the unloading back plate (201), and the lock molding insert (203) is arranged at the middle part of the unloading plate (202).

5. The thick material shrinkage forming separation structure according to claim 4, characterized in that: The lower die (30) comprises a lower die plate (301), a lower fixing plate (302), a lower pad (303), and a lower die base (304) which are sequentially installed along the height downward. The forming die (305) is located in the lower die plate (301). A pusher (306) is slidably connected to the forming die (305). A rectangular spring (307) is installed at the bottom of the pusher (306), and a second screw plug (308) is installed at the bottom of the rectangular spring (307).

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