Punching die holder, and punching device

Abstract

The present application provides a stamping die holder, a stamping device, a through channel structure is formed on the die holder, a quick release component combined by two separate parts can be extended from the channel structure and fixed and formed with the die holder structure. Further, since both sides of the die holder have openings, the quick release structure can be separated from the top surface of the die holder or from the assembly side, so that the punch assembly can be quickly repaired and replaced without disassembling the entire die holder during the plate processing.

Description

Technical Field

[0001] This utility model relates to the field of metal parts processing technology, specifically, to a stamping die base and stamping device used to prepare a sheet metal with a dense array of holes, and to achieve rapid assembly and disassembly of the mold. Background Technology

[0002] The statements in this section are provided only as background information relating to this disclosure and do not necessarily constitute prior art.

[0003] The general process of sheet metal stamping is as follows: the bottom die, acting as a movable component in the first direction, supports the sheet metal to be stamped. The top die, acting as a moving component in the second direction, generates a stamping stroke toward the bottom die. The punch component mounted on the top die, during its stroke toward the bottom die, creates a pressing force that at least partially penetrates the surface of the sheet metal. Then, the bottom die moves in the first direction to adjust the relative position of the workpiece and the punch component, and the above process is repeated until the sheet metal is stamped into shape.

[0004] New product manufacturing demands include the production of sheet materials with at least one densely packed hole array, formed by multiple punches of the same or different diameters evenly distributed in rows and columns. Existing equipment and processes are ill-suited for processing sheet materials with such densely packed hole arrays. Therefore, existing technologies should be improved to address the aforementioned technical problems. Utility Model Content

[0005] In view of this, the present invention provides a stamping die holder and a stamping device, which solves at least one of the above problems.

[0006] To solve the above technical problems, the first aspect of this utility model provides a stamping die holder for generating a stroke in the stamping direction to complete the stamping action on the workpiece. The stamping die holder includes: a base body with a plurality of connecting holes formed thereon, the connecting holes cooperating with connecting members to realize the fixed connection between the stamping die holder and the guide post structure of the stamping device; two openings formed on the two side surfaces of the base body; an assembly part configured as a through channel structure formed from one side opening of the base body surface to the other side opening; a first component and a second component, the first and second components being inserted from the openings on both sides of the base body surface to form an integral quick-release structure, a punch assembly passing through the quick-release structure, wherein the surface of the first component has a hole corresponding to the connecting holes, one end of the punch assembly passes through the second component and partially passes through the first component, and the other end partially protrudes from the second component, and at least one of the first component and the second component is configured to be separably connected to the opening on one side of the base body surface.

[0007] Preferably, a platform-shaped surface is formed within the assembly part, extending circumferentially along its inner cavity, and the platform-shaped surface divides the inner cavity of the assembly part into a two-level channel structure.

[0008] More preferably, the two-level channels within the assembly section are defined as a first channel and a second channel, respectively. The diameter of the first channel is larger than the diameter of the second channel, and the through channel structure between the two sides of the seat body forms a gradually narrowing or expanding structure from one side opening to the other side opening.

[0009] More preferably, the platform surface is formed with a mating portion corresponding to the hole on the first component.

[0010] More preferably, the first component and the second component are combined to form a quick-release structure with a "T"-shaped cross-section. This quick-release structure can extend into the inner cavity of the assembly part and is positioned by the platform-shaped surface.

[0011] Preferably, the material strength of the first component is less than that of the second component.

[0012] The second aspect of this utility model provides a stamping device, which includes a bottom support and a stamping part on the bottom support. The stamping part includes a first die holder that generates a translational stroke in a first direction and a second die holder that is formed by stamping in a second direction, wherein the second die holder is configured as a stamping die holder as described in the first aspect of this utility model.

[0013] More preferably, the two side surfaces of the second mold base along the stamping direction are defined as the top surface and the assembly surface, and the top surface and the assembly surface include at least one set of through channel structures. In the quick-release structure composed of the first component and the second component, the quick-release structure separates from the second mold base from the opening on one side of the top surface, or the second component in the quick-release structure separates from the second mold base from the opening on one side of the assembly surface.

[0014] By implementing the preferred embodiment of this utility model, the beneficial technical effect that can be achieved is that the punch assembly can be quickly replaced without removing the upper die holder in the stamping device structure. Attached Figure Description

[0015] Figure 1 For illustrative purposes, the structure of the upper die holder in a conventional stamping apparatus is shown as an example.

[0016] Figure 2 The state diagram shows... Figure 1 The equipment status of the upper module is shown;

[0017] Figure 3The diagram illustrates the main view of the upper mold base in a preferred embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram illustrating the structure of the first component in this preferred embodiment;

[0019] Figure 5 This is a schematic diagram illustrating the structure of the second component in this preferred embodiment;

[0020] Figure 6 The exploded state diagram shows the assembly state of the first and second components with the mold base. Detailed Implementation

[0021] The punched holes in the products obtained based on the aforementioned configuration and process have the same specifications and aperture. However, with the evolving demands of technology and products, and limited by traditional technological understanding, the fabrication of a sheet material with a dense array of holes also faces the following new challenges:

[0022] 1) The requirement for stamping a dense array of holes on the sheet metal surface means that the punch components will be subjected to high-frequency, multiple compressions against the sheet metal surface, which will accelerate the passivation process of the punch components. Therefore, to ensure the quality of sheet metal forming, it is necessary to promptly detect and replace passivated punch components during the stamping process. However, in actual working conditions, the process of replacing punch components can only be carried out after interrupting the stamping process and opening the top die base. In fact, even if passivated punch components can be detected in time, replacing punch components themselves presents technical challenges due to their difficulty and complex procedures.

[0023] 2) On the other hand, different application requirements of the product may result in scenarios where the hole array contains multiple punches with different hole diameters. In such processing requirements, it is also necessary to be able to quickly and easily replace the punch component with the corresponding hole diameter, which presents the same technical problem as the previous one.

[0024] Based on existing technology, an easy approach is to design punch components that match the specific product being applied. For example, for sheet metal with a dense array of holes, a stamping plate could be manufactured with the same number and specifications as the required array. It's easy to understand that the surface of this stamping plate should consist of an array of multiple punches, allowing the product to be formed in a single step. However, this innovative approach still faces the following problems:

[0025] 1) The significant increase in manufacturing costs resulting from the one-to-one correspondence between products and stamping components cannot be ignored; furthermore, every minor adjustment to the dense hole array will force corresponding changes to the punch assembly. In the long run, such increased costs and process limitations are obviously undesirable.

[0026] 2) When the surface of the sheet material to be formed contains multiple sets of dense hole arrays, and there are differences between each set of dense hole arrays, then even if each array is equipped with a corresponding stamping component, there will still be a problem of cumbersome replacement of stamping components.

[0027] Thus, the preferred embodiment of this utility model recognizes that configuring multiple punch assemblies is not optimal for the processing requirements of the above-mentioned molded parts having at least one dense array of holes on the surface. The fundamental problem to be solved is how to propose a solution for quickly replacing punch assemblies without increasing manufacturing costs excessively, and in particular, a solution applicable to processing scenarios where multiple punches of different diameters are contained in the same or different arrays. Based on the problems existing in the prior art and the aforementioned insights it provides, the preferred embodiment of this utility model further recognizes that since punch assemblies are mostly fixedly mounted in the stamping die base, in order to achieve quick assembly and disassembly of the punch assemblies, the connection method between the punch assemblies and the die base should be improved.

[0028] Embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in this specification, the drawings are not drawn to scale, and the same reference numerals denote the same parts.

[0029] It should be noted that the terms "first" and "second" used in the embodiments of this utility model are used to distinguish between two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the utility model. Subsequent embodiments will not explain this in detail.

[0030] The basic architecture of the stamping device still includes two sets of die base structures that generate displacement in two directions. Specifically, it includes a first module that generates a stroke in the stamping direction and a second module that translates in the feeding direction. The punch assembly is assembled and fixed to the first module, and the workpiece to be processed is supported by the surface of the second module and fed to the preset stamping position along with the translation of the second module. For ease of explanation and according to the orientation shown in the accompanying drawings, in the preferred embodiment of this utility model, the first module is defined as the upper module, that is, the top module, and the second module is defined as the lower module, that is, the bottom module.

[0031] The punch assembly is mounted on the upper module. See below. Figure 1 , Figure 1 For illustrative purposes, the structure of the upper die holder in a conventional stamping apparatus is shown as an example. Figure 2 The state diagram shows... Figure 1 The equipment status of the upper module is shown. Combined with... Figure 1 and Figure 2 The upper die holder 100 is a block-shaped component. Its two end faces are a top surface 101 and an assembly surface 102, respectively. Both the assembly surface 102 and the top surface 101 have several assembly holes 103. These assembly holes 103 are used to assemble the upper die holder 100 with guide pillars, fixed limiting parts, and other structures using bolts, pins, screws, and other connecting components to form the overall structure of the stamping device. Although Figure 1 While not explicitly shown, it is generally understood that a mounting hole, located near the center of the mounting surface 102, is used for positioning and securing the punch assembly 103 to the upper die holder 100. (Continue reading...) Figure 1 Figure 2 It can be seen that if the punch assembly 103 needs to be replaced, the upper die holder 100 must be completely removed first, and then the fixed relationship between the punch assembly 103 and the upper die holder 100 must be released from the assembly surface 102.

[0032] The preferred embodiment of this utility model aims to solve its technical problem by allowing the replacement of the punch assembly 103 without disassembling the entire upper die base. Secondly, since the punch assembly 103 is located on the mounting surface of the upper die base 100, and the mounting surface faces the sheet metal to be punched, a solution should be provided that allows the punch assembly to be replaced only through the top surface or mounting surface of the upper die base 100. For example, a connecting portion is formed on the upper die base 100 from its top surface 101 to its mounting surface 102, and the punch assembly is fixed to this connecting portion. Thus, the punch assembly can be removed and replaced through the connecting portion; that is, the replacement of the punch assembly 103 can be completed without disassembling the entire upper die base. Specifically, the connecting portion can be extracted upwards from the top surface of the upper die base 100 or separated downwards from its mounting surface 102.

[0033] See details Figure 3 , Figure 3 The diagram shows the main view of the upper mold base in a preferred embodiment of the present invention. In this embodiment, a channel structure is formed approximately at the center of the top surface of the upper mold base 100. This channel structure is a through structure extending from the top surface 101 of the upper mold base to its mounting surface 102. Figure 3As can be seen from the direction shown, the inner cavity of the channel structure is divided into two parts with different diameters, and the two internal channels are separated by a platform 104. For ease of explanation, the two internal channels of the channel structure are defined as the first channel 105 and the second channel 106. The channel structure is specifically configured such that the first channel 105 and the second channel 106 are connected, and the two are combined to form an assembly space that connects the top surface of the upper mold base 100 to the assembly surface. The first channel 105, which has a larger opening diameter, is located at the rear end of the second channel 106 in the stamping direction, that is, away from the workpiece. In this way, the channel structure forms a two-stage tapering structure from the top surface of the upper mold base 100 to the assembly surface 102, that is, a two-stage expanding structure from the assembly surface 102 to the top surface of the upper mold base 100.

[0034] Based on the channel structure, a further idea of ​​the preferred embodiment of this utility model is to configure an assembly through the channel structure. The assembly can extend into the channel structure and abut against the aforementioned platform surface to form a limit. In this way, only a punch assembly needs to be configured at the extension end of the assembly. The punch assembly can be taken out from the top surface or separated from the assembly surface downward by extraction.

[0035] For specific implementation of the above approach, please refer to Figure 4 and Figure 5 , Figure 4 and Figure 5 The structures of the assemblies in the preferred embodiment of this utility model are shown respectively. Among them, Figure 4 The first component 200, adapted to the first channel 105 caliber specification, is shown. Figure 5 A second component 300 adapted to the second channel 106 caliber specification is shown.

[0036] First, let's discuss the first component. In this preferred embodiment, the opening shape of the first channel 105 is square, so the first component 200 is also configured accordingly as a block structure with square end faces. Thus, in the assembled state, the first component 200 can be inserted into the first channel and its position is defined by the platform-like surface 104. (Continue reading...) Figure 4 Two bolt holes 201 are formed on both sides of the surface of the first component 200. Correspondingly, looking back... Figure 3 Two mating holes 107 are also formed on both sides of the platform surface 104. The fixing relationship between the first component 200 and the upper mold base 100 is established after the first component 200 is embedded in the first channel 105, by bolts passing through the bolt holes 201 and mating holes 107 respectively.

[0037] The configuration relationship between the second component 300 and the second channel 106 is consistent with that between the first component 200 and the first channel 105. The second channel 106 is a recessed portion formed on the mounting surface 102 of the upper mold base 100 and also has a square opening. The shape and specifications of the second component 300 are also approximately the same as those of the second channel 106 so that the second component 300 can be embedded in the second channel 106. Figure 6 The exploded view illustrates the aforementioned configuration. The second component and the second channel differ from the first two in that, in this embodiment, the two stages from the upper mold base 100 mounting surface 102 to the top surface are progressively expanding structures; therefore, the second component 300 is assembled and fixed to the first component 200. A common configuration is to create a channel penetrating both sides of the second component 300, and then pass a long, straight punch assembly through this channel and fix it to the bottom of the first component 200.

[0038] Of course, those skilled in the art, after learning of the above embodiments and technical teachings, can still make adaptive adjustments to various aspects of the solution:

[0039] 1) The shape and specifications of the first and second channels and the first and second components can be adjusted according to different stamping needs. For example, the shape of the channel and the component can be any regular or irregular shape. To facilitate assembly, the shape of the channel and the component can be configured into a specific shape with positioning function. For example, to facilitate extraction, the height of the first component 200 can be slightly higher than the inner cavity depth of the first channel 105. Alternatively, an additional extraction hole can be opened on the top surface of the first component 200, and a clamping device can be used to improve the efficiency of punch component replacement.

[0040] 2) In other embodiments of this utility model, considering that replacing the punch assembly by extracting it from the top surface in some large platforms would result in excessive height, and also considering that in actual working conditions, some punch assemblies may have specifications larger than the opening diameter of the second channel 106, making extraction from the top surface of the upper die holder 100 inconvenient and difficult in these cases. Therefore, under the same architecture, after lifting the upper die holder 100, the punch assembly can be separated downwards from the bottom mounting surface. In the embodiments described above, it is easy to conceive that the same configuration method of the first component and the first channel can be retained, or in some embodiments, the first component and the first channel can be omitted, so that both are integrally formed with the upper die holder, and only the second channel for embedding the second component is opened on the upper die holder.

[0041] With the configuration described above, the first and second components in this preferred embodiment, when combined and stacked, form a T-shaped cross-section. This T-shaped structure is compatible with tapered or expanding channel structures. Of course, any adjustments made in different preferred embodiments of this invention, including the docking position between the first and second components, the docking method between the first and second components, and the cross-sectional shape of the overall structure formed by the first and second components, should be considered within the scope of protection claimed by this invention.

[0042] On the other hand, in order to achieve the effect of quick assembly and disassembly while ensuring the strength of the quick-release structure itself, a common approach is to adjust the structural strength of the first and second components. A better approach is to select a higher-strength material for the second component during component configuration. For example, the first component can be made of ordinary 45# steel, while the second component can be made of a high-strength material, such as quenched Cr12MoV steel, thereby further reducing costs.

[0043] In a specific implementation of the preferred embodiment of this utility model, taking the stamping of a sheet metal with a dense array of holes on its surface as an example, before stamping, a punch assembly or punch array adapted to the product specifications is selected and installed on the assembly surface of the upper die base to complete the configuration of the stamping device. Then, the stamping device is started, and the upper die base makes the punch assembly repeatedly contact the sheet metal to be processed in the stamping direction. At the same time, during the time interval between the upper die base completing the previous stamping and being lifted, the lower die base adjusts its position in the horizontal direction along the guide rail on the device table to adapt to the upper die base's re-stamping.

[0044] Based on the aforementioned stamping component assembly scheme, it should be understood that those skilled in the art will naturally provide stamping modules with corresponding features, as well as stamping devices and stamping tables including the stamping modules, based on existing stamping equipment. Similarly, the assembly method of the stamping components in the preferred embodiment of this scheme is also applicable to any existing stamping equipment known or that should be known by those skilled in the art.

[0045] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A press die set for generating a stroke in a press direction to complete a press action on a workpiece to be processed, characterized by, The stamping die base includes: A base body with several connecting holes formed thereon, the connecting holes cooperating with the connecting piece to realize the fixed connection between the stamping die base and the guide post structure of the stamping device, and two openings formed on the two side surfaces of the base body respectively; The assembly part is configured as a through channel structure formed by an opening on one side of the seat surface to an opening on the other side. The first and second components are respectively inserted into openings on both sides of the base surface to form a single quick-release structure. A punch assembly passes through this quick-release structure. The first component has a hole on its surface corresponding to the connection hole. One end of the punch component passes through the second component and partially through the first component, and the other end extends partially from the second component. At least one of the first component and the second component is configured to be separably connected to an opening on one side of the seat surface.

2. The press tool shoe of claim 1, wherein, The assembly part has a platform-shaped surface that extends circumferentially along its inner cavity, and the platform-shaped surface divides the inner cavity of the assembly part into a two-level channel structure.

3. The press tool shoe of claim 2, wherein, The two-level channels within the assembly section are defined as the first channel and the second channel. The diameter of the first channel is larger than the diameter of the second channel. The through channel structure between the two sides of the seat body forms a gradually narrowing or expanding structure from one side opening to the other side opening.

4. The stamping die set of claim 2, wherein, The platform surface has a mating portion corresponding to the hole on the first component.

5. A press tool shoe according to any one of claims 2 to 4, characterised in that, The first and second components are combined to form a quick-release structure with a "T"-shaped cross-section. This quick-release structure can extend into the inner cavity of the assembly part and is positioned by the platform-shaped surface.

6. The press tool shoe of claim 5, wherein, The material strength of the first component is less than that of the second component.

7. A stamping apparatus characterized by comprising: The stamping device includes a bottom support and a stamping portion on the bottom support. The stamping portion includes a first die holder that generates a translational stroke in a first direction and a second die holder that performs stamping in a second direction, wherein the second die holder is configured as a stamping die holder as described in any one of claims 1 to 6.

8. The stamping apparatus of claim 7, wherein, Along the stamping direction, the two side surfaces of the second mold base are defined as the top surface and the assembly surface. The top surface and the assembly surface include at least one set of through channel structures. In the quick-release structure composed of the first component and the second component, the quick-release structure separates from the second mold base from the opening on one side of the top surface, or the second component in the quick-release structure separates from the second mold base from the opening on one side of the assembly surface.

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