A multi-cavity composite mold

Abstract

The utility model discloses a kind of multi-cavity composite moulds, including upper die holder and lower die holder, a plurality of stamping pipes are provided on upper die holder;Lower die holder is connected with die blank, and a plurality of stamping holes are opened on the surface of die blank corresponding to a plurality of punches, bottom column is opened on the surface of lower die holder corresponding to a plurality of stamping holes, stamping pipe can be inserted into stamping hole and cover bottom column, and top material piece is arranged on the surface of bottom column, first elastic member is connected to top material piece, so that after upper die holder and lower die holder are separated, workpiece at the end of bottom column is lifted by top material piece.The utility model technical scheme aims at optimizing mould structure, and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a multi-cavity composite mold. Background Technology

[0002] In the field of parts processing, composite molds are widely used due to their high efficiency, but existing technologies still have significant shortcomings: although traditional composite molds can achieve stamping and punching functions, they often face problems such as workpiece damage caused by difficult demolding and mold blockage caused by poor waste discharge during actual production. They also lack multi-cavity structures. Especially when machining precision parts, the ejection mechanism of existing molds is slow to respond and has poor synchronization of multiple cavities, which seriously affects product yield and production efficiency. This makes it difficult for existing molds to meet the production requirements of modern intelligent manufacturing for high precision, automation, and low loss. These defects are particularly prominent when machining thin-walled parts and high-precision ring parts. Utility Model Content

[0003] The main purpose of this invention is to provide a multi-cavity composite mold, which aims to optimize the mold structure and improve production efficiency.

[0004] To achieve the above objectives, this utility model proposes a multi-cavity composite mold, comprising:

[0005] Upper die holder, wherein multiple stamping tubes are provided on the upper die holder;

[0006] A lower die base is provided, on which a die blank is connected. The surface of the die blank has multiple stamping holes corresponding to multiple punches. The surface of the lower die base has a bottom post corresponding to the multiple stamping holes. A stamping tube can extend into the stamping holes and cover the bottom post. A ejector is provided on the surface of the bottom post. The ejector is connected to a first elastic element so that after the upper die base and the lower die base are separated, the ejector will lift the workpiece at the end of the bottom post.

[0007] In one possible implementation, a movable cavity is provided between the mold blank and the lower mold base, the bottom post passes through the movable cavity, and the top material is disposed within the movable cavity.

[0008] In one possible implementation, the top material component includes a support plate and a plurality of top material cylinders disposed on the surface of the support plate, the top material cylinders being sleeved on the surface of the bottom column, and the first elastic element being disposed between the support plate and the bottom of the movable cavity.

[0009] In one possible implementation, the upper die holder is further provided with a stamping column at the center of the stamping tube, and a waste hole is opened at the center of the bottom column corresponding to the stamping column.

[0010] In one possible implementation, a pressure plate is connected to the end of the stamping tube, and the stamping tube passes through the pressure plate. A second elastic element is connected between the pressure plate and the upper die base, and the pressure plate can move axially along the stamping tube.

[0011] This utility model's technical solution utilizes the stamping tube and central stamping column of the upper die base in conjunction with the bottom column and scrap hole of the lower die base to achieve simultaneous stretching and punching, significantly improving production efficiency. The pressure plate and the second elastic element ensure stable material positioning, preventing wrinkling or displacement. The ejector system automatically ejects the workpiece when the mold opens, avoiding mold jamming and reducing manual intervention. The multi-cavity design supports the simultaneous processing of multiple parts, while the scrap hole enables automatic waste discharge, keeping the mold clean. The overall structure is compact, balancing forming accuracy and automation requirements, making it particularly suitable for mass production scenarios such as precision ring parts and perforated stretching parts, significantly reducing costs and time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the multi-cavity composite mold of this utility model;

[0014] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the multi-cavity composite mold of this utility model;

[0015] Figure 3 This is a cross-sectional view of an embodiment of the multi-cavity composite mold of this utility model.

[0016] Explanation of icon numbers:

[0017] 1. Upper die base; 2. Stamping tube; 21. Stamping column; 22. Pressure plate; 3. Lower die base; 31. Bottom column; 32. Scrap hole; 4. Die blank; 41. Stamping hole; 42. Movable cavity; 51. Support plate; 52. Ejector cylinder; 6. First elastic element; 7. Second elastic element.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] Reference Figures 1 to 3 This utility model proposes a multi-cavity composite mold, including an upper mold base 1 and a lower mold base 3. The upper mold base 1 is provided with a plurality of stamping tubes 2. The lower mold base 3 is connected to a mold blank 4. The surface of the mold blank 4 is provided with a plurality of stamping holes 41 corresponding to a plurality of punches. The surface of the lower mold base 3 is provided with a bottom post 31 corresponding to a plurality of stamping holes 41. The stamping tubes 2 can extend into the stamping holes 41 and cover the bottom post 31. The surface of the bottom post 31 is provided with an ejector. The ejector is connected to a first elastic member 6 so that after the upper mold base 1 and the lower mold base 3 are separated, the ejector will lift the workpiece at the end of the bottom post 31.

[0021] Understandably, the upper die holder 1 and the lower die holder 3 are the upper and lower parts of the mold, respectively. The upper die holder 1 is mounted on the slide of the stamping machine and can move up and down, while the lower die holder 3 is fixed on the worktable. The stamping tubes 2 are multiple tubular punches mounted on the upper die holder 1 for stamping and forming. The die blank 4 is a module fixed on the lower die holder 3, and its surface has stamping holes 41 corresponding to the stamping tubes 2, i.e., cavities. The bottom pillar 31 is a columnar structure protruding on the lower die holder 3 at the position corresponding to the stamping holes 41, used to support the workpiece.

[0022] When the upper mold base 1 is pressed down, the stamping tube 2 inserts into the stamping hole 41 of the lower mold base 3, simultaneously covering the bottom post 31, meaning the bottom post 31 is located inside the stamping tube 2. This design is used for molding bottle cap structures. The ejector is an ejection device, such as an ejector pin or ejector plate, mounted on the surface of the bottom post 31, used to lift the workpiece from the bottom post 31. The first elastic element 6 can be a spring or air cushion, providing elasticity. When the upper mold base 1 is lifted, the elastic element pushes the ejector upward, ejecting the workpiece out of the stamping hole 41, achieving automatic demolding.

[0023] The upper die base 1 is pressed down first, the stamping tube 2 is inserted into the stamping hole 41 and covers the bottom post 31, and the material is formed by extrusion, punching and stretching between the stamping tube 2 and the bottom post 31; after the upper die base 1 rises, the first elastic element 6 releases the elastic force and pushes the ejector to lift the workpiece from the end of the bottom post 31, so as to facilitate the removal of the workpiece or the entry into the next process.

[0024] This embodiment achieves multi-cavity composite processing through the above-described configuration. Multiple stamping tubes 2 and stamping holes 41 can simultaneously process multiple workpieces, improving efficiency. Automatic demolding, along with the design of the ejector and elastic components, eliminates the need for manual part removal, making it suitable for automated production. It can be used to manufacture small metal rings, sleeves, ampoule caps, capacitor housings, and other parts.

[0025] Reference Figures 1 to 3In one embodiment of this utility model, a movable cavity 42 is provided between the mold blank 4 and the lower mold base 3, the bottom column 31 passes through the movable cavity 42, and the top material is disposed in the movable cavity 42.

[0026] Understandably, the movable cavity 42 is a cavity located between the mold blank 4 and the lower mold base 3, allowing the internal components to move up and down within a certain range. The bottom pillar 31 extends upward from the lower mold base 3, passes through the movable cavity 42, and inserts into the stamping hole 41 of the mold blank 4. The ejector is directly disposed within the movable cavity 42 and is linked with the bottom pillar 31. The ejector is connected to the lower mold base 3 through the first elastic element 6, and is normally lifted by the elastic element, located at the top of the bottom pillar 31 in the upper part of the movable cavity 42.

[0027] The upper mold base 1 presses down, and the stamping tube 2 inserts into the stamping hole 41 of the mold blank 4 and covers the bottom post 31. The material is formed between the stamping tube 2 and the bottom post 31. After the stamping tube 2 contacts the workpiece, continued pressing will force the ejector to move downward, compressing the first elastic element 6. The upper mold base 1 rises, the stamping tube 2 exits the stamping hole 41, the first elastic element 6 releases its elastic force, and pushes the ejector to move upward. The ejector pushes the workpiece out from the end of the bottom post 31, completing the demolding. The movable cavity 42 provides sufficient space for the ejector to move, avoiding jamming problems caused by debris or material deformation.

[0028] Reference Figures 1 to 3 In one embodiment of the present invention, the top material component includes a support plate 51 and a plurality of top material cylinders 52 disposed on the surface of the support plate 51. The top material cylinders 52 are sleeved on the surface of the bottom column 31, and the first elastic member 6 is disposed between the support plate and the bottom of the movable cavity 42.

[0029] Understandably, the support plate 51 is a flat plate structure located within the movable cavity 42, capable of vertical movement, used to fix the ejector cylinder 52 and provide uniform ejection force. The ejector cylinder 52 consists of multiple cylindrical components fixed to the surface of the support plate 51 and fitted onto the outer surface of the bottom column 31. The ejector cylinder 52 can directly contact the bottom of the workpiece, pushing the workpiece out of the mold. The second elastic element 7 is a spring or other elastic element, installed between the support plate 51 and the bottom of the movable cavity 42, used to provide the reset elastic force of the ejection system, mainly supporting the support plate 51, providing greater elastic stroke and stability. The bottom column 31 serves as a fixed part, and the ejector cylinder 52 can slide up and down along the outer surface of the bottom column 31 to ensure alignment with the workpiece during ejection.

[0030] Reference Figures 1 to 3 In one embodiment of this utility model, the upper mold base 1 is further provided with a stamping column 21 at the center of the stamping tube 2, and the bottom column 31 is provided with a waste hole 32 corresponding to the stamping column 21.

[0031] Understandably, the stamping column 21 is fixed to the upper die base 1, located at the center of the stamping tube 2, and is pressed down synchronously with the upper die base 1. Its diameter is smaller than that of the stamping tube 2, forming an annular stamping gap. The scrap hole 32 is a through hole opened at the center of the bottom column 31, with its position precisely corresponding to the stamping column 21, used to discharge the circular scrap generated during stamping.

[0032] During the mold closing stage, the stamping tube 2 presses down, covering the bottom pillar 31 and pressing the material into the stamping hole 41, forming the outer contour of the workpiece, such as a ring or cylinder. Simultaneously, the stamping pillar 21 presses down, penetrating the material and pushing the central scrap into the scrap hole 32 of the bottom pillar 31, completing the punching or blanking. During the mold opening stage, the upper mold base 1 is raised, the stamping pillar 21 exits the scrap hole 32, the stamping tube 2 detaches from the workpiece, and the ejector system rises under the action of the first elastic element 6, ejecting the formed workpiece from the end of the bottom pillar 31. The scrap falls through the scrap hole 32 into the collection device below, such as a scrap bin or conveyor belt.

[0033] The above settings enable the integration of composite processes, allowing a single mold to simultaneously complete stretching / forming and punching / blanking, thus improving efficiency. Scrap is automatically discharged, and the scrap hole 32 prevents scrap from accumulating inside the mold, reducing manual cleaning and making it suitable for continuous stamping production.

[0034] Reference Figures 1 to 3 In one embodiment of the present invention, a pressure plate 22 is connected to the end of the stamping tube 2, and the stamping tube 2 passes through the pressure plate 22. A second elastic member 7 is connected between the pressure plate 22 and the upper mold base 1, and the pressure plate 22 can move along the axial direction of the stamping tube 2.

[0035] Understandably, the pressure plate 22 is connected to the end of the stamping tube 2 and can move along the axial direction of the stamping tube 2. It is connected to the upper die holder 1 through the second elastic element 7 to provide pressure force. Its function is to press the material before stamping to prevent material displacement or wrinkling, improve the forming quality, and spring back with the upper die holder 1 after stamping.

[0036] This utility model's technical solution utilizes the stamping tube 2 of the upper die base 1 and the central stamping column 21 in conjunction with the bottom column 31 and scrap hole 32 of the lower die base 3 to achieve simultaneous stretching and punching, significantly improving production efficiency. The pressure plate 22 and the second elastic element 7 ensure stable material positioning, preventing wrinkling or displacement. The ejector system automatically ejects the workpiece when the mold opens, avoiding mold jamming and reducing manual intervention. The multi-cavity design supports the simultaneous processing of multiple parts, while the scrap hole 32 enables automatic waste discharge, keeping the mold clean. The overall structure is compact, balancing forming accuracy and automation requirements, and is particularly suitable for mass production scenarios such as precision ring parts and perforated stretching parts, significantly reducing costs and time.

[0037] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-cavity, composite mold characterized by, include: Upper die holder, wherein multiple stamping tubes are provided on the upper die holder; A lower die base is provided, on which a die blank is connected. The surface of the die blank has multiple stamping holes corresponding to multiple punches. The surface of the lower die base has a bottom post corresponding to the multiple stamping holes. A stamping tube can extend into the stamping holes and cover the bottom post. A ejector is provided on the surface of the bottom post. The ejector is connected to a first elastic element so that after the upper die base and the lower die base are separated, the ejector will lift the workpiece at the end of the bottom post.

2. The multi-cavity composite mold of claim 1, wherein, A movable cavity is provided between the mold blank and the lower mold base, the bottom post passes through the movable cavity, and the top material is disposed in the movable cavity.

3. The multi-cavity composite mold of claim 2, wherein, The top material component includes a support plate and a plurality of top material cylinders disposed on the surface of the support plate. The top material cylinders are sleeved on the surface of the bottom column, and the first elastic element is disposed between the support plate and the bottom of the movable cavity.

4. The multi-cavity composite mold of claim 1, wherein, The upper die holder is also provided with a stamping column at the center of the stamping tube, and a waste hole is opened at the center of the bottom column corresponding to the stamping column.

5. The multi-cavity composite mold of claim 1, wherein, The end of the stamping tube is connected to a pressure plate, and the stamping tube passes through the pressure plate. A second elastic element is connected between the pressure plate and the upper die base. The pressure plate can move along the axial direction of the stamping tube.

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