Stamping die capable of automatically returning material
By designing an automatic unloading stamping die, the kinetic energy of the upper stamping die is used for unloading, which solves the problems of energy waste and high maintenance complexity in existing technologies, and achieves improved energy efficiency and simplified maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINXIANG SIKE AUTO PARTS CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
AI Technical Summary
Existing simple stamping dies suffer from energy waste and high maintenance complexity during unloading operations, especially failing to effectively utilize the kinetic energy during the upward movement of the upper stamping die for unloading.
The stamping die design with automatic material ejection utilizes a combination structure of fixed seat, support seat, guide rod, slide, limit seat, connecting rod, tension spring and connecting seat to directly convert the kinetic energy of the upper stamping die rising into the material ejection action, replacing the traditional cylinder mechanism.
It effectively reduces energy consumption for material return, simplifies maintenance, improves energy efficiency, and reduces maintenance complexity.
Smart Images

Figure CN224525792U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology, and in particular to a stamping die with automatic material ejection. Background Technology
[0002] Stamping dies, as key process equipment for forming metal or non-metal materials, play a vital role in industrial production. Through precision machining, they enable high-precision forming of materials, efficiently producing parts of various complex shapes and sizes that meet design requirements. These dies are widely used in high-end manufacturing fields such as automobile manufacturing, electronics, home appliances, and aerospace.
[0003] Currently, in the application of simple stamping dies, there is a widespread problem of insufficient energy efficiency. Taking the production of bent and folded parts as an example (e.g.) Figure 4 , Figure 5 The diagram shown illustrates a prior art stamping process. The prior art uses a separate cylinder mechanism to perform the unloading operation. This design has two main drawbacks: first, it fails to effectively utilize the kinetic energy generated during the upward movement of the upper stamping die for unloading, resulting in energy waste; second, the additional cylinder mechanism increases maintenance complexity.
[0004] To address this, an automatic unloading stamping die is proposed. Utility Model Content
[0005] This utility model is a stamping die with automatic material ejection proposed to overcome the shortcomings of the existing technology.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic unloading stamping die, comprising a lower stamping die and an upper stamping die, wherein a fixed seat is detachably fixedly installed on one side of the outer surface of the lower stamping die, a support seat is fixedly connected to the end of the fixed seat, guide rods are rotatably connected to both sides of the outer surface of the support seat, a slide is rotatably connected to the two guide rods, a top block assembly is rotatably connected to the inner walls of both sides of the slide, a limit seat is slidably sleeved on the outer surface of the top block assembly, and the limit seat is fixedly connected to the fixed seat;
[0007] The top ends of the two guide rods are rotatably connected to a connecting rod. A tension spring is fixedly connected between the bottom of one side of the outer surface of the connecting rod and the slide block. The top end of the connecting rod is rotatably connected to a connecting seat, and the connecting seat is detachably fixed to the upper stamping die.
[0008] Furthermore, the top block assembly includes an assembly block, which is rotatably connected to the slide block. One end of the assembly block is fixedly connected to a top rod, and a limiting seat is slidably sleeved on the outer surface of the top rod. The other end of the top rod is fixedly connected to a material ejector head. The limiting seat has a limiting effect on the top rod, ensuring that the top rod can move stably.
[0009] Furthermore, the assembly block and the ejector rod are designed as an integral unit, and the ejector rod and the ejector head are fixed by threads, which facilitates the separation and assembly of the ejector rod and the ejector head.
[0010] Furthermore, the connecting seat includes a seat plate, and the seat plate is detachably fixed to the upper stamping die. Two support blocks are symmetrically fixed to one side of the outer surface of the seat plate, and the support blocks are rotatably connected to the connecting rod. The setting of the support blocks facilitates the rotational installation of the connecting rod.
[0011] Furthermore, the fixed seat is fixed to the lower stamping die and the seat plate is fixed to the upper stamping die by two bolts. The bolts facilitate the assembly and disassembly of the fixed seat and the seat plate.
[0012] Furthermore, the fixed seat and the limiting seat are designed as a single unit, reducing processing steps while ensuring the connection strength between the fixed seat and the limiting seat.
[0013] Furthermore, the slide block has grooves on both sides of its outer surface, and the guide rod is slidably installed in the groove. The groove and the guide rod cooperate to limit the movement of the slide block, ensuring that the slide block can move stably along the guide rod.
[0014] The beneficial effects of this utility model are:
[0015] In use, this utility model of an automatic ejection stamping die replaces the original cylinder ejection structure by setting a fixed seat, a support seat, a guide rod, a slide, a limit seat, a connecting rod, a tension spring, and a connecting seat. It directly converts the kinetic energy of the upper stamping die rising into the ejection action, effectively reducing ejection energy consumption. Secondly, by reducing the installation of the pneumatic system, it also reduces the difficulty of maintenance. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments 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 these drawings without creative effort.
[0017] Figure 1 : A perspective view of this utility model;
[0018] Figure 2The present utility model Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 Side view of this utility model;
[0020] Figure 4 , Figure 5 : This is a diagram illustrating the existing technology structure.
[0021] The attached figures are labeled as follows:
[0022] 1. Lower stamping die; 2. Fixed seat; 3. Ejector rod; 4. Guide rod; 5. Connecting rod; 6. Support block; 7. Seat plate; 8. Bolt; 9. Upper stamping die; 10. Support seat; 11. Slide block; 12. Assembly block; 13. Limit seat; 14. Unloading head; 15. Tension spring. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] like Figures 1 to 3 As shown, a stamping die with automatic unloading is disclosed, comprising a lower stamping die 1 and an upper stamping die 9. A fixed base 2 is detachably fixedly installed on one side of the outer surface of the lower stamping die 1. A support base 10 is fixedly connected to the end of the fixed base 2. Guide rods 4 are rotatably connected to both sides of the outer surface of the support base 10. The two guide rods 4 are rotatably connected to a slide block 11. Slide grooves are formed on both sides of the outer surface of the slide block 11, and the guide rods 4 are slidably installed in the slide grooves. Top block assemblies are rotatably connected to the inner walls of both sides of the slide block 11. A limit seat 13 is slidably sleeved on the outer surface of the top block assembly. The top block assembly includes an assembly block 12, and the assembly block 12 is connected to the slide block 11. The assembly block 12 is rotatably connected to a push rod 3 at one end, and a limiting seat 13 is slidably sleeved on the outer surface of the push rod 3. The other end of the push rod 3 is fixedly connected to a material ejector head 14. The assembly block 12 and the push rod 3 are integrated. The push rod 3 and the material ejector head 14 are fixed by threads. An external thread is provided at the end of the push rod 3. The inner diameter of the external thread is smaller than the inner diameter of the push rod 3. A threaded hole is provided on the outer surface of the material ejector head 14. The threaded hole matches the external thread to realize the connection between the push rod 3 and the material ejector head 14, similar to the connection between a nut and a bolt. The limiting seat 13 is fixedly connected to the fixed seat 2. The fixed seat 2 and the limiting seat 13 are integrated.
[0025] The top ends of the two guide rods 4 are rotatably connected to the connecting rod 5. The bottom of one side of the outer surface of the connecting rod 5 is fixedly connected to the slide 11 with a tension spring 15. The top end of the connecting rod 5 is rotatably connected to the connecting seat, and the connecting seat is detachably fixed to the upper stamping die 9. The connecting seat includes a seat plate 7, and the seat plate 7 is detachably fixed to the upper stamping die 9. Two support blocks 6 are symmetrically fixedly connected to one side of the outer surface of the seat plate 7, and the support blocks 6 are rotatably connected to the connecting rod 5. The fixed seat 2 is fixed to the lower stamping die 1, and the seat plate 7 is fixed to the upper stamping die 9 with two bolts 8. The outer surfaces of the lower stamping die 1 and the upper stamping die 9 are pre-drilled with threaded holes that match the bolts 8, which facilitates the installation of the seat plate 7 and the fixed seat 2.
[0026] Working principle: In use, firstly, the upper stamping die 9 and the lower stamping die 1 are installed on the stamping machine (this is existing technology). Then, the seat plate 7 is fixed to the upper stamping die 9 and the fixed seat 2 is fixed to the lower stamping die 1 using bolts 8. During stamping, the workpiece blank is placed on the upper stamping die 9, and then the lower stamping die 1 descends under the action of the stamping machine. The seat plate 7 drives the top of the connecting rod 5 to move down through the support block 6, and then the tops of the two guide rods 4 and the connecting rod 5 move down under the action of gravity. At this time, the tension spring 15 provides a pulling force to the slide block 11 close to the connecting rod 5, forcing the slide block 11 to drive the assembly block 12 to move towards the side of the connecting rod 5. The assembly block 12 drives the ejector rod 3 and the ejector head 14 to move. When the ejector head 14 disengages from the lower stamping die 1, the upper stamping die 9 just contacts the workpiece blank, and then the stamping operation is completed. After stamping, the stamping machine drives the upper stamping die 9 to move upward, thereby driving the top of the connecting rod 5 to move upward through the connecting seat, thereby driving the guide rod 4 to move upward at the end connected to the connecting rod 5, and driving the two guide rods 4 to swing upward around the rotation connection point of the support seat 10 and the guide rod 4. At this time, under the action of the guide rod 4, the slide block 11 overcomes the tension of the tension spring 15, so that the slide block 11 moves away from the connecting rod 5, thereby pushing the top block assembly into the lower stamping die 1 for ejection operation.
[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, 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 this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A stamping die with automatic unloading, comprising a lower stamping die (1) and an upper stamping die (9), characterized in that: A fixed seat (2) is detachably fixedly installed on one side of the outer surface of the stamping die (1). A support seat (10) is fixedly connected to the end of the fixed seat (2). Guide rods (4) are rotatably connected to both sides of the outer surface of the support seat (10). The two guide rods (4) are rotatably connected to a slide (11). The inner walls of both sides of the slide (11) are rotatably connected to a top block assembly. A limit seat (13) is slidably sleeved on the outer surface of the top block assembly, and the limit seat (13) is fixedly connected to the fixed seat (2). The top ends of the two guide rods (4) are rotatably connected to a connecting rod (5). A tension spring (15) is fixedly connected between the bottom of one side of the outer surface of the connecting rod (5) and the slide (11). The top end of the connecting rod (5) is rotatably connected to a connecting seat, and the connecting seat is detachably fixed to the upper stamping die (9).
2. The automatic unloading stamping die according to claim 1, characterized in that: The top block assembly includes an assembly block (12), and the assembly block (12) is rotatably connected to the slide (11). One end of the assembly block (12) is fixedly connected to a top rod (3), and a limiting seat (13) is slidably sleeved on the outer surface of the top rod (3). The other end of the top rod (3) is fixedly connected to a material ejector head (14).
3. The automatic unloading stamping die according to claim 2, characterized in that: The assembly block (12) and the push rod (3) are designed as an integral unit, and the push rod (3) and the ejector head (14) are fixed by threads.
4. The automatic unloading stamping die according to claim 1, characterized in that: The connecting seat includes a seat plate (7), and the seat plate (7) is detachably fixed to the upper stamping die (9). Two support blocks (6) are symmetrically fixed to one side of the outer surface of the seat plate (7), and the support blocks (6) are rotatably connected to the connecting rod (5).
5. The automatic unloading stamping die according to claim 4, characterized in that: The fixed seat (2) is fixed to the lower stamping die (1), and the seat plate (7) is fixed to the upper stamping die (9) by two bolts (8).
6. The automatic unloading stamping die according to claim 1, characterized in that: The fixed seat (2) and the limiting seat (13) are designed as an integral unit.
7. The automatic unloading stamping die according to claim 1, characterized in that: The slide block (11) has grooves on both sides of its outer surface, and the guide rod (4) is slidably installed in the grooves.