Automotive window area switchable stamping die
Patent Information
- Application Number
- CN202522198328.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-17
AI Technical Summary
这种方式虽然能够保证零件质量，但导致了模具开发成本、仓储管理成本增加，并且生产线需要为不同模具进行频繁切换，影响生产效率
Smart Images
Figure CN224712833U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a switchable stamping die for the automotive window area, belonging to the field of die technology. Background Technology
[0002] In the stamping production of automotive body panels, it is common to encounter situations where the main body shape of the parts is the same, but there are differences in local features. For example, the same car roof may have two versions, one with a sunroof and one without, depending on the configuration; similarly, the same car tailgate outer panel may have two versions, one with a window and one without.
[0003] Currently, for parts with or without windows, two separate sets of dies are typically developed to complete the stamping production. While this method ensures part quality, it increases die development and warehousing management costs, and the production line needs to frequently switch between different dies, impacting production efficiency.
[0004] Some existing switching solutions also have limitations: one is to use a pneumatic punch holder, which is a standard part usually used to match the installation of standard punches and is only suitable for small hole switching. For larger irregular hole punching processes such as car sunroofs or car rear panels, it cannot provide stable and reliable punching force; another is to achieve switching by manually disassembling and assembling the punching blade. This method requires on-site workers to open the mold and then disassemble and assemble, which is time-consuming and labor-intensive. Moreover, manual installation makes it difficult to guarantee positioning accuracy, which can easily lead to unstable punching quality and affect the quality of the parts. Utility Model Content
[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
[0006] The technical solution provided by this utility model is as follows: A switchable stamping die for an automotive window area includes an upper die base and a blank holder disposed below the upper die base. It also includes a drive pad, a driver, a floating block, a trimming cutter block, a first elastic reset mechanism, and a second elastic reset mechanism. The driver is used to drive the drive pad to move horizontally. The telescopic shaft of the driver is connected to the drive pad via a connecting block. The trimming cutter block is fixed to the bottom of the floating block. The floating block is connected to the upper die base via a limiting screw. A clearance hole is provided on the blank holder to expose the trimming cutter block. The drive pad is disposed above the floating block. A limiting block is provided on the lower end face of the drive pad, and a limiting step that cooperates with the limiting block is provided on the upper end face of the floating block. The first elastic reset mechanism is disposed between the upper die base and the floating block, and is used to provide a downward force to the floating block. The second elastic reset mechanism is disposed between the floating block and the blank holder, and is used to provide an upward force to the floating block.
[0007] Based on the above technical solution, the present invention can be further improved as follows.
[0008] Furthermore, it also includes an indicator and a pointer. The indicator is installed on the outside of the upper mold base, and the pointer is connected to the drive pad and can move synchronously with the drive pad. The pointer and the indicator are used to indicate the current working status of the mold.
[0009] The beneficial effect of adopting the above-mentioned further solution is that, through the direct linkage between the pointer and the drive pad, the positional relationship of the core components inside the mold is transformed into visual status information, and the operator no longer needs to confirm the current working status by frequently opening the mold and stopping the machine for inspection.
[0010] Furthermore, it also includes a vertical movement guide component, which is used to guide the vertical movement of the floating block.
[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting up the up-and-down moving guide component, it prevents the floating block from deflecting, getting stuck, or interfering with surrounding parts during the up-and-down movement, ensuring that the trimming blade block can accurately cooperate with the lower mold.
[0012] Furthermore, the up-and-down moving guide assembly includes a guide post and a guide sleeve. The guide post is fixed on the floating block, and the guide sleeve is fixed on the upper mold base. The guide post and the guide sleeve are in sliding engagement.
[0013] Furthermore, the up-and-down moving guide assembly also includes a floating guide plate, which is fixed on the floating block and slides in contact with the inner wall of the pressure body.
[0014] The beneficial effect of adopting the above-mentioned further scheme is that it enhances the floating block's resistance to eccentric loads and its overall stability when subjected to unbalanced punching forces.
[0015] Furthermore, it also includes a horizontal movement guide component, which is used to guide the horizontal movement of the drive pad.
[0016] The beneficial effect of adopting the above-mentioned further solution is that it ensures that the drive pad moves accurately and without obstruction during horizontal reciprocating motion.
[0017] Furthermore, the horizontal movement guide assembly includes an upper slide plate and a side slide plate. The upper slide plate is fixed to the upper end face of the drive pad, and the side slide plate is fixed to the upper mold base. The upper slide plate and the side slide plate are in sliding engagement.
[0018] The beneficial effect of adopting the above-mentioned further solution is that the upper slide plate and the side slide plate form a planar guiding mechanism, which can simultaneously withstand vertical and lateral loads, ensuring that the drive pad plate always maintains stable operation during long-term and frequent switching movements.
[0019] Furthermore, the first elastic reset mechanism and / or the second elastic reset mechanism are nitrogen springs, mechanical springs, or hydraulic springs.
[0020] Furthermore, the actuator is a drive cylinder, a hydraulic cylinder, or an electric push rod.
[0021] Furthermore, a gap is provided between the head of the limiting screw and the floating block, and the value of the gap is greater than the working stroke of the trimming blade block.
[0022] The beneficial effect of adopting the above-mentioned further solution is that the gap ensures that the movement stroke of the floating block is not restricted by the limiting screw during normal operation, thus guaranteeing the normal realization of the trimming function. Furthermore, in the event of failure of the first and second elastic reset mechanisms, the limiting screw can catch the floating block through its head, preventing it from falling out of the mold, thereby avoiding collision damage to internal mold parts and potential production safety accidents.
[0023] Compared with existing technologies, the technical solution provided by this utility model has the following advantages: First, this utility model achieves automated switching of the trimming function through a driver, a drive pad, and a floating block. When a change in production status is required, all switching actions can be completed automatically, eliminating the need for tedious manual disassembly and assembly. Second, this utility model can produce parts with and without windows using a single set of molds, reducing the development, manufacturing, and maintenance costs of the molds. Furthermore, the traditional manual tool changing method requires repositioning and adjustment each time, consuming significant production time and making it difficult to guarantee consistent precision. The mold of this utility model ensures accurate tool placement after each switch, guaranteeing the stability and consistency of stamping quality while saving switching time and improving production efficiency. Finally, the entire switching mechanism operates smoothly and reliably, meeting the requirements for punching windows in large automotive parts. Attached Figure Description
[0024] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0025] Figure 1This is a three-dimensional structural diagram of the switchable stamping die for the automotive window area according to this utility model. Figure 2 This is an exploded view of the switchable stamping die for the automotive window area of this utility model. Figure 3 This is an exploded view of another perspective of the switchable stamping die for the automotive window area of this utility model. Figure 4 For the present utility model Figure 1 Top view; Figure 5 For the present utility model Figure 3 Sectional view along axis AA; Figure 6 This is a schematic diagram of the internal structure of the mold of this utility model when it is switched to the windowed production mode; Figure 7 This is a schematic diagram of the internal structure of the mold of this utility model when it is switched to the windowless production mode.
[0026] In the diagram, 1. Upper die base; 2. Pressing body; 3. Drive pad; 4. Driver; 5. Floating block; 6. Trimming cutter block; 7. First elastic reset mechanism; 8. Second elastic reset mechanism; 9. Clearance hole; 10. Indicator; 11. Pointer; 12. Guide post; 13. Guide sleeve; 14. Floating guide plate; 15. Upper slide plate; 16. Side slide block; 17. Limiting screw; 18. Limiting block; 19. Limiting step. Detailed Implementation
[0027] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects described and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).
[0028] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.
[0029] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.
[0030] like Figures 1-7As shown, a switchable stamping die for an automotive window area includes an upper die base 1 and a blank holder 2 disposed below the upper die base 1. It also includes a drive pad 3, a driver 4 for driving the drive pad 3 horizontally, a floating block 5, a trimming cutter block 6, a first elastic reset mechanism 7, and a second elastic reset mechanism 8. The trimming cutter block 6 is fixed to the bottom of the floating block 5. A cavity is formed between the blank holder 2 and the upper die base 1. The floating block 5 is installed in the cavity and connected to the upper die base 1 by a limiting screw 17. The body 2 has a clearance hole 9 for exposing the trimming blade block 6; the driving pad 3 is disposed above the floating block 5, the lower end face of the driving pad 3 is provided with a limiting block 18, and the upper end face of the floating block 5 is provided with a limiting step 19 that cooperates with the limiting block 18; the first elastic reset mechanism 7 is disposed between the upper mold base 1 and the floating block 5, and is used to provide a downward force to the floating block 5; the second elastic reset mechanism 8 is disposed between the floating block 5 and the pressure body 2, and is used to provide an upward force to the floating block 5.
[0031] More specifically, the drive pad 3 can reciprocate between a first position and a second position: when the drive pad 3 moves to the first position, the limiting block 18 and the limiting step 19 overlap at least partially in the vertical direction, so that the drive pad 3 can press down the floating block 5 and the trimming blade 6 through the limiting block 18, making them in a working extended state; when the drive pad 3 moves to the second position, the limiting block 18 and the limiting step 19 are offset from each other in the vertical direction, and the floating block 5 and the trimming blade 6 are in a retracted non-working state under the action of the return nitrogen cylinder.
[0032] The system also includes an indicator plate 10 and a pointer 11. The indicator plate 10 is mounted on the outside of the upper mold base 1, and the pointer 11 is connected to the drive pad 3 and can move synchronously with the drive pad 3. The pointer 11, in conjunction with the indicator plate 10, is used to indicate the current working state of the mold, that is, to visually indicate to the operator whether the trimming blade 6 is in a working extended state or a non-working retracted state. For example, the indicator plate 10 can be marked with "Yes" or "No". When the pointer 11 points to "Yes", it indicates that the mold is in the working state of producing parts with windows, and the trimming blade 6 is in the working extended state, capable of performing window trimming operations on the material. When the pointer 11 points to "No", it indicates that the mold is in the working state of producing parts without windows, and the trimming blade 6 is in the retracted non-working state, and will not perform window trimming operations on the material. This visual indication method avoids production accidents or quality problems caused by misjudging the state, and improves the safety and reliability of the production process.
[0033] The stamping die also includes a vertically moving guide assembly, which guides the vertical movement of the floating block 5. In this embodiment, the vertically moving guide assembly includes a guide post 12, a guide sleeve 13, and a floating guide plate 14. The guide post 12 is fixed to the floating block 5, and the guide sleeve 13 is fixed to the upper die base 1. The guide post 12 and the guide sleeve 13 are slidably engaged. The floating guide plate 14 is fixed to the floating block 5 and is slidably engaged with the inner wall of the pressure plate 2.
[0034] The vertical movement guide assembly further includes a horizontal movement guide assembly, which guides the horizontal movement of the drive pad 3. In this embodiment, the horizontal movement guide assembly includes an upper slide plate 15 and a side slide block 16. The upper slide plate 15 is fixed to the upper end face of the drive pad 3, and the side slide block 16 is fixed to the upper mold base 1. The upper slide plate 15 and the side slide block 16 are in sliding engagement.
[0035] The first elastic reset mechanism 7 and / or the second elastic reset mechanism 8 are nitrogen springs, mechanical springs or hydraulic springs.
[0036] The driver 4 is a drive cylinder, hydraulic cylinder, or electric push rod.
[0037] A gap is provided between the head of the limiting screw 17 and the floating block 5, the gap being larger than the working stroke of the trimming blade block 6. This gap ensures that during normal operation, the movement stroke of the floating block 5 is completely unrestricted by the limiting screw 17, guaranteeing the normal implementation of the trimming function. Furthermore, in the event of a failure of the first elastic reset mechanism 7 or the second elastic reset mechanism 8, the limiting screw 17 can catch the floating block 5 with its head, preventing it from falling out of the mold, thereby avoiding collision damage to internal mold parts and potential production safety accidents.
[0038] Taking the production of rear door outer panels with and without windows as an example, the specific working method of the switchable stamping die for the automotive window area of this utility model is as follows. In the following working method, the first return spring adopts a driving nitrogen cylinder, the second elastic return mechanism 8 adopts a return nitrogen cylinder, and the driver 4 is selected as a driving cylinder: When the rear door outer panel to be produced needs to have a window, the mold is switched to the window production mode, and the workflow is as follows: When the mold is in the open state, the pressure source is released, and the pressure body 2 moves downward under the action of gravity, releasing the stroke. At this time, the driving nitrogen cylinder and the floating block 5 connected to it are both in the release state. The drive cylinder is vented and the drive pad 3 slides horizontally to the left (reference). Figure 6From the outside of the mold, the pointer 11, which is linked to the drive pad 3, aligns the indicator on the indicator plate 10 with the word "Yes," visually indicating that the mold has entered the windowed production mode. Inside the mold, the drive pad 3 moves to the left, causing the lower limit block 18 to slide to a position where it contacts the upper limit step 19 of the floating block 5. The floating block 5 and the upper mold trimming cutter block 6 fixed thereon extend outward from the clearance hole 9.
[0039] Entering the stamping stage, the upper die begins to descend. First, the blank holder 2 presses the sheet metal, completing the blanking action. Subsequently, the upper die continues to descend. Since the drive pad 3 has abutted against the limit step 19 at the upper end of the floating block 5 through the working limit block 18, the entire floating block 5, with the assistance of the drive nitrogen cylinder, overcomes the force of the return nitrogen cylinder and pushes the upper die trimming cutter block 6 to move steadily downward, cooperating with the lower die cutter block to complete the punching operation of the window area.
[0040] When the rear door outer panel to be produced has no window, the mold switches to the windowless production mode, and the workflow is as follows: With the mold in the open state, the drive cylinder releases air, causing the drive pad 3 to move horizontally to the right (reference). Figure 7 From the outside, pointer 11 moves accordingly, aligning the mark on indicator 10 with the word "None," clearly indicating that the current production mode is windowless. Inside the mold, drive pad 3 moves to the right, and the limiting block 18 and the limiting step 19 are vertically offset from each other.
[0041] Upon entering the stamping stage, the upper die begins to descend, and the blank holder 2 first presses the sheet metal. At the same time, since the limiting block 18 of the drive pad 3 and the limiting step 19 of the floating block 5 have been misaligned, the floating block 5 and the upper die trimming cutter block 6 fixed thereon retract upward under the action of the return nitrogen cylinder, completely retracting into the interior of the blank holder 2.
[0042] During the closing phase, the mold is completely closed. Throughout this process, the upper mold trimming cutter block 6 maintains a safe distance from the lower mold cutter block without any contact, thus successfully switching to a state where the window is not being cut.
[0043] This invention enables automatic and rapid switching of punching functions through the simple action of a driving cylinder, and is equipped with intuitive status indicators, thereby improving production efficiency.
[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A switchable stamping die for an automobile window area, comprising an upper die base (1) and a blank holder (2) disposed below the upper die base (1), characterized in that, It also includes a drive pad (3), a driver (4) for driving the drive pad (3) to move horizontally, a floating block (5), a trimming blade block (6), a first elastic reset mechanism (7), and a second elastic reset mechanism (8). The trimming blade (6) is fixed to the bottom of the floating block (5). The floating block (5) is connected to the upper mold base (1) by a limiting screw (17). The pressing body (2) has a relief hole (9) for exposing the trimming blade (6). The driving pad (3) is disposed above the floating block (5), and the lower end face of the driving pad (3) is provided with a limiting block (18), and the upper end face of the floating block (5) is provided with a limiting step (19) that cooperates with the limiting block (18). The first elastic reset mechanism (7) is disposed between the upper mold base (1) and the floating block (5) and is used to provide a downward force to the floating block (5); the second elastic reset mechanism (8) is disposed between the floating block (5) and the pressure body (2) and is used to provide an upward force to the floating block (5).
2. The switchable stamping die for the automotive window area according to claim 1, characterized in that, It also includes an indicator (10) and a pointer (11). The indicator (10) is installed on the outside of the upper mold base (1). The pointer (11) is connected to the drive pad (3) and can move synchronously with the drive pad (3). The pointer (11) and the indicator (10) work together to indicate the current working status of the mold.
3. The switchable stamping die for the automotive window area according to claim 1 or 2, characterized in that, It also includes a vertical movement guide component, which is used to guide the vertical movement of the floating block (5).
4. The switchable stamping die for the automotive window area according to claim 3, characterized in that, The up-and-down moving guide assembly includes a guide post (12) and a guide sleeve (13). The guide post (12) is fixed on the floating block (5), and the guide sleeve (13) is fixed on the upper mold base (1). The guide post (12) and the guide sleeve (13) are in sliding cooperation.
5. The switchable stamping die for the automotive window area according to claim 4, characterized in that, The up-and-down moving guide assembly also includes a floating guide plate (14), which is fixed on the floating block (5) and slides with the inner wall of the pressing body (2).
6. The switchable stamping die for the automotive window area according to claim 1 or 2, characterized in that, It also includes a horizontal movement guide component, which is used to guide the horizontal movement of the drive pad (3).
7. The switchable stamping die for the automotive window area according to claim 6, characterized in that, The horizontal moving guide assembly includes an upper slide plate (15) and a side slide block (16). The upper slide plate (15) is fixed to the upper end face of the drive pad (3), and the side slide block (16) is fixed to the upper mold base (1). The upper slide plate (15) and the side slide block (16) are in sliding cooperation.
8. The switchable stamping die for the automotive window area according to claim 1, characterized in that, The first elastic reset mechanism (7) and / or the second elastic reset mechanism (8) are nitrogen springs, mechanical springs or hydraulic springs.
9. The switchable stamping die for the automotive window area according to claim 1, characterized in that, The driver (4) is a drive cylinder, hydraulic cylinder or electric push rod.
10. The switchable stamping die for the automotive window area according to claim 1, characterized in that, A gap is provided between the head of the limiting screw (17) and the floating block (5), and the value of the gap is greater than the working stroke of the trimming knife block (6).