A demolding mechanism of an FPC stamping die
By combining the design of the connecting plate, cylinder and electric lifting rod, the problem of leaving marks on the circuit board surface by the demolding method of the existing FPC stamping mold is solved, realizing the rapid demolding without marks and improving the practicality of the mold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUNXING MASCH IND KUNSHAN CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-09
Smart Images

Figure CN224334829U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stamping die technology, specifically relating to a demolding mechanism for an FPC stamping die. Background Technology
[0002] FPC stands for Flexible Printed Circuit Board, a type of printed circuit board based on flexible materials. It is highly flexible and thin, and can operate in a bent and folded state. Therefore, it is widely used in various electronic devices. In the FPC production process, stamping dies are used to stamp the circuit board. After stamping, in order to quickly remove the FPC from the die, a demolding mechanism is needed for demolding.
[0003] Chinese patent discloses a demolding device for a flexible circuit board stamping die (authorization announcement number CN216099382U). This patent technology includes an upper die frame, a lower die frame, an upper die core disposed on the upper die frame, and a lower die core disposed on the lower die frame. The lower die core is provided with several vertically penetrating through holes, and a corresponding push rod is disposed on the through holes. A movable plate for mounting several push rods is disposed between the lower die core and the lower die frame. A drive cylinder for driving the movable plate to move up and down is disposed on the lower die frame. This utility model has the advantage of facilitating the demolding of flexible circuit boards.
[0004] However, most existing stamping dies employ a demolding method that ejects the circuit board from the die. This method can affect quality by leaving marks on the circuit board surface during ejection. For example, the aforementioned prior art uses an ejector pin method. In practical applications, when using ejector pins to eject the circuit board, the marks left on the circuit board surface negatively impact quality, resulting in low practicality. Therefore, those skilled in the art provide a demolding mechanism for FPC stamping dies to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to provide a demolding mechanism for FPC stamping dies, which can solve the problems mentioned in the background art.
[0006] The specific technical solution adopted in this utility model is as follows:
[0007] A demolding mechanism for an FPC stamping die includes a first die and a second die disposed on one side of the first die. A mounting rod is provided through one side of the second die, and a connecting plate is provided at one end of the mounting rod. A cylinder is installed on one side of the second die. Both the first and second dies have cavities on their upper surfaces. A top groove is provided inside the cavity, and a top plate is provided inside the top groove. Both the first and second dies have fixing grooves on their lower surfaces. An electric lifting rod is provided inside the fixing groove, and a lifting plate is provided at the lower end of the electric lifting rod. Connecting rods are symmetrically arranged on the upper surface of the lifting plate.
[0008] The present invention is further configured such that: the lower end of the connecting rod is installed on the upper surface of the lifting plate by bolts, and the upper end of the connecting rod is fixed to the lower surface of the top plate.
[0009] The present invention is further configured such that the fixed end of the electric lifting rod is installed inside the fixed groove, and the telescopic end of the electric lifting rod is connected to the middle position of the upper surface of the lifting plate.
[0010] The present invention is further configured such that: a mounting hole is provided on one side of the first mold, and one end of the mounting rod passes through one side of the second mold and is embedded inside the mounting hole and threadedly connected to the mounting hole.
[0011] The present invention is further configured such that: one side of the connecting plate is provided with an installation sleeve, and the other end of the installation rod is embedded inside the installation sleeve and connected by screws.
[0012] The present invention is further configured such that: the fixed end of the cylinder is installed on one side of the second mold, and the telescopic end of the cylinder is connected to the middle position of one side of the connecting plate.
[0013] The technical effects achieved by this utility model are as follows:
[0014] This utility model discloses a demolding mechanism for an FPC stamping die. Through the arrangement of a connecting plate, a cylinder, a mounting rod, and mounting holes, one end of the mounting rod is threaded into the mounting hole, and the other end is connected using a mounting sleeve. When the cylinder operates, the connecting plate moves closer to the second die, and the mounting rod increases the distance between the first and second dies. This allows for rapid separation of the first and second dies, enabling the demolding of the FPC stamped inside. It is highly practical.
[0015] This utility model discloses a demolding mechanism for an FPC stamping die. Through the arrangement of a top plate, a top groove, an electric lifting rod, a connecting rod, a lifting plate, and a fixed groove, the electric lifting rod causes the lifting plate to rise and fall within the fixed groove when it operates. Simultaneously, the top plate, connected by the connecting rod, rises upward within the top groove, thus ejecting the FPC and achieving rapid demolding. This mechanism is highly practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this practical application;
[0017] Figure 2 This is a schematic diagram of the mounting rod used in this utility model;
[0018] Figure 3 This is a top view of the connecting plate in this utility model;
[0019] Figure 4 This is a schematic diagram of the top plate structure in this practical application;
[0020] Figure 5 This is a schematic diagram of the lifting plate structure in this practical application.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. First mold; 11. Mounting hole; 2. Second mold; 3. Top plate; 31. Top groove; 32. Electric lifting rod; 33. Connecting rod; 34. Lifting plate; 35. Fixing groove; 4. Connecting plate; 41. Cylinder; 42. Mounting rod; 5. Mold cavity. Detailed Implementation
[0023] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0024] like Figures 1-5 As shown, a demolding mechanism for an FPC stamping die includes a first die 1 and a second die 2 disposed on one side of the first die 1. A mounting rod 42 is provided through one side of the second die 2, and a connecting plate 4 is provided at one end of the mounting rod 42. A cylinder 41 is mounted on one side of the second die 2. Both the first die 1 and the second die 2 have mold cavities 5 on their upper surfaces. A top groove 31 is provided inside the mold cavity 5, and a top plate 3 is provided inside the top groove 31. Both the first die 1 and the second die 2 have fixing grooves 35 on their lower surfaces. An electric lifting rod 32 is provided inside the fixing groove 35, and a lifting plate 34 is provided at the lower end of the electric lifting rod 32. Connecting rods 33 are symmetrically arranged on the upper surface of the lifting plate 34. This mechanism utilizes the electric lifting rod 32 to raise and lower the lifting plate 34, allowing the top plate 3 to rise and fall within the top groove 31 during raising and lowering, thus demolding the FPC. The operation of the cylinder 41 causes the connecting plate 4 to move, adjusting the distance between the first die 1 and the second die 2 during movement. This achieves efficient demolding and is highly practical.
[0025] like Figure 4and Figure 5 As shown, the lower end of the connecting rod 33 is bolted to the upper surface of the lifting plate 34, and the upper end of the connecting rod 33 is fixed to the lower surface of the top plate 3. The fixed end of the electric lifting rod 32 is installed inside the fixing groove 35, and the telescopic end of the electric lifting rod 32 is connected to the middle position of the upper surface of the lifting plate 34. This arrangement allows the connecting rod 33 and the lifting plate 34 to be installed and disassembled using bolts. The connecting rod 33 can be used to connect the top plate 3 and the lifting plate 34. When the electric lifting rod 32 is working, the telescopic rod of the electric lifting rod 32 will control the lifting and lowering of the lifting plate 34, thereby achieving the purpose of demolding the FPC by lifting and lowering the top plate 3.
[0026] like Figure 2 and Figure 4 As shown, a mounting hole 11 is provided on one side of the first mold 1. One end of the mounting rod 42 passes through one side of the second mold 2 and is embedded in the mounting hole 11 and threadedly connected to the mounting hole 11. This arrangement utilizes the threaded connection between the mounting rod 42 and the mounting hole 11 to achieve the purpose of connecting the mounting rod 42 to the first mold 1.
[0027] like Figure 3 As shown, a mounting sleeve is also provided on one side of the connecting plate 4. The other end of the mounting rod 42 is embedded inside the mounting sleeve and connected by screws. This setting uses screws to fix the mounting rod 42 inside the mounting sleeve after one end of the mounting rod 42 is embedded inside the mounting sleeve to achieve its installation purpose.
[0028] like Figure 1 and Figure 3 As shown, the fixed end of the cylinder 41 is installed on one side of the second mold 2, and the telescopic end of the cylinder 41 is connected to the middle position of one side of the connecting plate 4. This arrangement allows the connecting plate 4 to move on one side of the second mold 2 when the cylinder 41 is working. When it moves, the distance between the first mold 1 and the second mold 2 can be adjusted, thereby enabling the FPC inside the mold cavity 5 to be quickly removed to achieve the purpose of demolding.
[0029] The working principle of this utility model is as follows: When using the demolding mechanism of the FPC stamping die, the FPC to be stamped is first placed inside the mold cavity 5, and the upper mold outside the mold cavity 5 is used to stamp the FPC inside the mold cavity 5. This is existing technology and will not be discussed in detail here. After stamping, the electric lifting rod 32 inside the fixed groove 35 works, which causes the lifting plate 34 to rise and fall inside the fixed groove 35, and causes the top plate 3 connected by the connecting rod 33 to rise inside the top groove 31. This pushes out the FPC and achieves the purpose of rapid material discharge and demolding. At the same time, when the demolding is performed, the cylinder 41 on one side of the second mold 2 is also activated. This causes the mounting rod 42 to move closer to the second mold 2. It should be noted that the second mold 2 is fixed and does not move when the connecting plate 4 moves. The mounting rod 42 increases the distance between the first mold 1 and the second mold 2, which can quickly separate the first mold 1 and the second mold 2 to demold the FPC inside. It has good practicality.
[0030] The electric lifting rod and cylinder used in this utility model are all existing known electrical devices. They are all connected to an external main controller and external power supply, and can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. The appropriate model is selected according to actual use. Therefore, the structure, circuit and control principle of the device are not described in detail here.
[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.
Claims
1. A demolding mechanism for an FPC stamping die, characterized in that: The mold includes a first mold (1) and a second mold (2) disposed on one side of the first mold (1). A mounting rod (42) is provided through one side of the second mold (2). A connecting plate (4) is provided at one end of the mounting rod (42). A cylinder (41) is installed on one side of the second mold (2). A mold cavity (5) is provided on the upper surface of both the first mold (1) and the second mold (2). A top groove (31) is provided inside the mold cavity (5). A top plate (3) is provided inside the top groove (31). A fixing groove (35) is provided on the lower surface of both the first mold (1) and the second mold (2). An electric lifting rod (32) is provided inside the fixing groove (35). A lifting plate (34) is provided at the lower end of the electric lifting rod (32). A connecting rod (33) is symmetrically provided on the upper surface of the lifting plate (34).
2. The demolding mechanism for an FPC stamping die according to claim 1, characterized in that: The lower end of the connecting rod (33) is bolted to the upper surface of the lifting plate (34), and the upper end of the connecting rod (33) is fixed to the lower surface of the top plate (3).
3. The demolding mechanism for an FPC stamping die according to claim 1, characterized in that: The fixed end of the electric lifting rod (32) is installed inside the fixed groove (35), and the telescopic end of the electric lifting rod (32) is connected to the middle position of the upper surface of the lifting plate (34).
4. The demolding mechanism for an FPC stamping die according to claim 1, characterized in that: The first mold (1) has an installation hole (11) on one side. One end of the installation rod (42) passes through one side of the second mold (2), is embedded in the installation hole (11), and is threadedly connected to the installation hole (11).
5. The demolding mechanism for an FPC stamping die according to claim 1, characterized in that: The connecting plate (4) is also provided with an installation sleeve on one side, and the other end of the installation rod (42) is embedded in the installation sleeve and connected by screws.
6. The demolding mechanism for an FPC stamping die according to claim 1, characterized in that: The fixed end of the cylinder (41) is installed on one side of the second mold (2), and the telescopic end of the cylinder (41) is connected to the middle position of one side of the connecting plate (4).