Multifunctional deep drawing die capable of rapidly replacing male die and use method of multifunctional deep drawing die

Abstract

The invention provides a multifunctional deep drawing die capable of rapidly replacing a male die and a using method of the multifunctional deep drawing die, and belongs to the technical field of metal deep drawing dies. The problems that a traditional die is complex in remodeling for serialized parts and high in cost are solved. The die comprises an upper die base, a lower die base, a male die block, a female die plate, a guide plate, a self-locking device and a male die installation base, the female die plate is installed at the bottom of the upper die base, the male die installation base is installed at the top of the lower die base, the male die block is fixed to the male die installation base through the self-locking device, and the guide plate is installed in the lower die base. A traditional mode that the whole upper die needs to be replaced is subverted, the standard male die installation base and the self-locking device are designed, the self-locking device utilizes a trapezoidal locking block with double-side inclined faces and a symmetrical lock catch, the male die is locked when inserted, and a pull rod is unlocked, and when the male die is replaced, an old male die can be taken down only by pulling an unlocking pull rod; when a new male die is inserted, the clamping block is automatically pushed away through the wedge-shaped inclined face and is finally self-locked, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of metal drawing dies, in particular to a multifunctional drawing die with replaceable punch, which is suitable for drawing dies of parts with similar side wall structures but different upper surfaces. BACKGROUND

[0002] Traditional drawing dies are usually designed for specific parts, and the punch and the die are fixedly paired. When a series of parts with similar side wall structures but different upper surface shapes need to be produced, the traditional method has the following disadvantages: 1. Low die changing efficiency: the entire upper die part needs to be replaced, which is time-consuming and laborious, and seriously affects production efficiency.

[0003] 2. High die cost: a complete upper die set is prepared for each type of part, which requires a large amount of capital investment.

[0004] 3. Large storage space: multiple upper dies need to occupy a large storage space, which is inconvenient to manage. SUMMARY

[0005] Therefore, in order to solve the problems of complex die changing and high cost of traditional dies for series parts mentioned in the background, the present application provides a multifunctional drawing die with replaceable punch and a using method thereof.

[0006] To achieve the above purpose, the present application adopts the following technical scheme: a multifunctional drawing die with replaceable punch, comprising an upper die seat, a lower die seat, a punch block, a die plate, a guide plate, a self-locking device and a punch mounting base, the bottom of the upper die seat is provided with a die plate, the top of the lower die seat is provided with a punch mounting base, the punch mounting base is fixedly provided with a punch block through a self-locking device, and the lower die seat is provided with a guide plate.

[0007] Further, the top of the lower die seat is fixedly provided with a blank holder.

[0008] Further, the top of the punch mounting base is provided with a circular positioning pin and a rhombic positioning pin.

[0009] Further, the bottom of the punch block is provided with positioning holes corresponding to the circular positioning pin and the rhombic positioning pin.

[0010] Further, the self-locking device has two, which are respectively installed on the two sides of the punch mounting base.

[0011] Further, the self-locking device comprises a locking block and two clamping locks, the locking block is fixedly arranged on the side wall of the punch mounting base, the two clamping locks are fixedly arranged on the side wall of the punch block, and the two clamping locks are located on the two sides of the locking block and cooperate with the locking block to complete the locking.

[0012] Further, the lock block is T-shaped.

[0013] Further, the T-shaped shoulder of the lock block is designed with a chamfer, and when the convex die module is installed, the force of the weight of the convex die module itself and the oblique pushing of the T-shaped lock block first expand and then close the two symmetrical clamping locks.

[0014] Further, the clamping lock is provided with an unlocking pull rod, and pulling the unlocking pull rod can automatically unlock the clamping lock. Compared with the prior art, the beneficial effects of the multifunctional draw die capable of quickly replacing the convex die and the use method thereof are: 1. Quick replacement structure innovation: overturning the traditional mode of replacing the entire upper die, a standardized convex die installation base and a self-locking device are designed. The self-locking device uses a trapezoidal lock block with double-sided inclined surfaces and symmetrical locks to realize "inserting to lock and pulling the rod to unlock". When replacing the convex die, only the unlocking pull rod needs to be pulled to remove the old convex die. When inserting the new convex die, the clamping block is automatically pushed open by the wedge-shaped inclined surface and is finally self-locked. The entire process can be completed within 1-2 minutes, greatly improving the production efficiency and meeting the production of multiple varieties in small batches.

[0015] 2. Precise positioning technology innovation: the "one side two pins" (circular positioning pin and rhombus positioning pin) positioning method is adopted, combined with the stable clamping force of the self-locking clamping device, to ensure that the positioning accuracy of the convex die is within ±0.01 mm. In the case of frequent replacement of the convex die, the part forming precision can still be guaranteed, and the product quality stability is improved.

[0016] 3. Mold structure optimization innovation: the concave die plate cavity of the upper die seat is adapted to the similar side wall structure of the series of parts, and the upper base adopts an internal cavity flexible structure, which can adapt to various upper surface changes; the convex die assembly only needs to replace the forming head, realizing "one die for multiple uses". This modular design makes the concave die, upper die seat and other components shareable, reducing the design and manufacturing, storage and management costs of the mold.

[0017] 4. Significant cost reduction: for series parts, only different convex die heads need to be made, and most of the concave die, upper die seat and other components can be shared, greatly reducing the design and manufacturing costs of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments thereof, and are not intended to limit the present application. In the drawings: Fig. 1 is a partial enlarged view of the convex die plate according to the present application; Fig. 2 is a structural schematic view of the multifunctional draw die capable of quickly replacing the convex die according to the present application; Fig. 3 This is a half-sectional perspective view of the multi-functional deep drawing die with quick-change punch as described in this invention. In the figure: 1. Upper mold base; 2. Lower mold base; 3. Punch mold plate; 4. Concave mold plate; 5. Guide plate; 6. Circular locating pin; 7. Diamond locating pin; 8. Self-locking device; 9. Punch mounting base; 10. Pressure ring; 11. Locking block; 12. Clamping lock; 13. Unlocking lever. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings, and not all of them. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the invention.

[0020] See Figs. 1-3 This embodiment describes a multi-functional deep drawing die with a quick-change punch, comprising an upper die base 1, a lower die base 2, a punch module 3, a concave die 4, a guide plate 5, a self-locking device 8, a punch mounting base 9, and a pressure ring 10. The concave die 4 is mounted on the bottom of the upper die base 1, and the punch mounting base 9 is mounted on the top of the lower die base 2. The punch module 3 is fixed on the punch mounting base 9 by the self-locking device 8, and the guide plate 5 is installed inside the lower die base 2.

[0021] (1) Upper mold base: The bottom of the upper mold base 1 is fixedly installed with a concave template 4. The cavity of the concave template 4 is designed to match the side wall structure of all the parts to be molded.

[0022] The upper mold base 1 has a hollow structure inside, which is formed by the convex module 3. The internal structure is not machined. The internal hollow structure has high flexibility and can realize a variety of products with different upper surface structures.

[0023] (2) Lower mold base: A standardized pressure ring 10 is fixed to the top of the lower mold base 2.

[0024] The lower mold base 2 is equipped with a punch mounting base 9 on its top. The punch mounting base 9 has a circular positioning pin 6 and a diamond-shaped positioning pin 7 on its top for precise positioning of the punch module 3.

[0025] (3) Convex plate: All convex modules 3 have a standardized mounting and positioning device.

[0026] The bottom of the convex module 3 has positioning holes corresponding to the circular positioning pin 6 and the diamond-shaped positioning pin 7.

[0027] The forming heads of different convex modules 3 are designed into corresponding shapes according to the different requirements of the upper surface of the parts.

[0028] (4) Guiding mechanism: The lower die holder 2 is equipped with a guide plate 5 to ensure that the convex module 3 and the concave template 4 are accurately aligned during the deep drawing process.

[0029] (5) Self-locking device: The self-locking device 8 is the core component for enabling rapid replacement.

[0030] Each self-locking device 8 includes a T-shaped locking block 11 with double-sided bevels and a pair of symmetrical clamping latches 12. The locking block 11 is fixed to the side wall of the punch mounting base 9, and the two clamping latches 12 are fixed to the side wall of the punch module 3. The two clamping latches 12 are located on both sides of the locking block 11 and cooperate with the locking block 11 to complete the locking.

[0031] The convex module 3 has a symmetrical clamping lock 12 on its side with an unlocking lever 13. Pulling the unlocking lever 13 can automatically unlock the lock.

[0032] When installing the convex module 3, relying on the force of the convex module 3's own weight, under the oblique pushing action of the T-shaped locking block 11 on the side wall of the convex mold mounting base 9, the symmetrically arranged clamping locks 12 first unfold and then close and lock.

[0033] The key inventive features of this application are rapid positioning, precise positioning, and rapid installation.

[0034] The working process of the multi-functional deep drawing die with quick-change punch described in this invention is as follows: Step 1: Prepare to change the punch: The operator stops the punch press, ensuring the slide block is at the top dead center. The operator then pulls the unlocking lever 13 on the side of the upper die holder 1, causing the clamping latch 12 of the self-locking device 8 to move outward and release the lock on the old punch plate.

[0035] Step 2: Disassemble the old punch: Operators use lifting equipment or tools to vertically remove the old convex template.

[0036] Step 3: Install the new punch: Take out the new convex module 3 and align its positioning hole with the circular positioning pin 6 and the diamond positioning pin 7 on the convex mold mounting base 9; push the new convex module 3 vertically downward, and the top of the locking block 11 will contact the wedge-shaped inclined surface of the clamping latch 12 and gradually push the clamping latch 12 open. Once the convex module 3 is fully installed, the clamping latch 12 resets under gravity, and its wedge-shaped structure is embedded below the T-shaped shoulder of the T-shaped locking block 11, locking it in place to achieve automatic locking.

[0037] Step 4: Production After releasing the unlocking lever and confirming that the convex module 3 is securely installed, the punch press can be started for production.

[0038] Since the cavity of the concave template 4 is designed for the similar sidewall structure of serialized parts, the forming head of the new convex template 3 will cooperate with the concave template 4 to draw out the part with the required upper surface shape.

[0039] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating orientation and positional relationships are based on the orientation and positional relationships shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0040] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A multi-functional deep drawing die with a quickly changeable punch, characterized in that: It includes an upper mold base (1), a lower mold base (2), a punch module (3), a concave mold plate (4), a guide plate (5), a self-locking device (8), and a punch mounting base (9). The concave mold plate (4) is installed at the bottom of the upper mold base (1), and the punch mounting base (9) is installed at the top of the lower mold base (2). The punch module (3) is fixed on the punch mounting base (9) by the self-locking device (8), and the guide plate (5) is installed inside the lower mold base (2).

2. The multi-functional deep drawing die with quick-change punch as described in claim 1, characterized in that: A pressure ring (10) is fixed to the top of the lower mold base (2).

3. The multi-functional deep drawing die with quick-change punch as described in claim 1, characterized in that: The top of the punch mounting base (9) is provided with a circular locating pin (6) and a diamond-shaped locating pin (7).

4. The multi-functional deep drawing die with quick-change punch as described in claim 1, characterized in that: The bottom of the convex module (3) has positioning holes corresponding to the circular positioning pin (6) and the diamond positioning pin (7).

5. The multi-functional deep drawing die with quick-change punch as described in claim 1, characterized in that: There are two self-locking devices (8), which are installed on both sides of the punch mounting base (9).

6. The multi-functional deep drawing die with quick-change punch as described in claim 5, characterized in that: The self-locking device (8) includes a locking block (11) and two clamping latches (12). The locking block (11) is fixed on the side wall of the punch mounting base (9), and the two clamping latches (12) are fixed on the side wall of the punch module (3). The two clamping latches (12) are located on both sides of the locking block (11) and cooperate with the locking block (11) to complete the locking.

7. The multi-functional deep drawing die with quick-change punch as described in claim 6, characterized in that: The locking block (11) is T-shaped.

8. The multi-functional deep drawing die with quick-change punch as described in claim 7, characterized in that: The T-shaped shoulder of the locking block (11) is designed with a chamfer. When the convex module (3) is installed, the two symmetrical clamping latches (12) first unfold and then close and lock under the oblique pushing action of the T-shaped locking block (11) due to the force of the convex module (3) itself and the oblique pushing action of the T-shaped locking block (11).

9. The multi-functional deep drawing die with quick-change punch as described in claim 6, characterized in that: The clamping lock (12) is equipped with an unlocking lever (13), and pulling the unlocking lever (13) can unlock the clamping lock (12).

10. A method of using a multi-functional deep drawing die with a quickly changeable punch as described in claim 9, characterized in that: Specifically, the following steps are included: Step 1: Prepare to change the punch: The operator stops the punch press and ensures that the slide block stops at the top dead center. The operator pulls the unlocking lever (13) on the side of the upper die holder (1) to move the clamping lock (12) of the self-locking device (8) outward and release the lock on the old punch plate. Step 2: Disassemble the old punch: The operator removed the old punch; Step 3: Install the new punch: Take out the new convex module (3) and align its positioning hole with the circular positioning pin (6) and the diamond positioning pin (7) on the convex mounting base (9); push the new convex module (3) vertically downward, and the top of the locking block (11) will contact the wedge-shaped inclined surface of the clamping lock (12) and gradually push the clamping lock (12) open; When the convex module (3) is fully installed, the clamping latch (12) resets under the action of gravity, and its wedge structure is embedded under the T-shaped shoulder of the T-shaped locking block (11) to lock and achieve automatic locking.

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