Material returning structure of trimming die

Abstract

The utility model relates to the field of trimming dies, in particular to a material returning structure of a trimming die, which comprises a base, a stamping die rod, a punch, a fixing plate, a stamping die gasket, a spring and a material returning pin, a rod cavity penetrating outwards is arranged in the base, an accommodating cavity is arranged on the end face of the base, the stamping die rod is arranged in the rod cavity, and the punch is arranged in the accommodating cavity. The fixing plate is arranged on the right side of the stamping die rod in a sleeving mode and connected with the right end face of the base, the spring is arranged in the containing cavity, the left end of the material returning pin is located in the spring, the right end of the material returning pin penetrates through the fixing plate and is connected with the stamping die gasket, and the punch is connected to the right end of the stamping die rod and located at the right end of the stamping die gasket. According to the material returning structure, three ejector pins at the tail end of a traditional trimming punching die are abandoned, and a plurality of springs and the material returning pins of the punching die are additionally arranged at the front end of the punching die rod; and the stamping die gasket is extruded, and the waste is smoothly ejected out by the back pressure generated by the spring, so that the stamping die is suitable for dies with small external dimensions and under-cutting stripping with larger trimming head shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the edge trim die field relates to an edge trim die's material returning structure. BACKGROUND

[0002] At present, the common edge trimming die material returning mode is to use the ejector pin of the tail part of the die to eject the waste. However, this material returning structure has certain limitations. This is suitable for the product with large die appearance, and is not suitable for the scene of cutting edge head type and large cutting.

[0003] Therefore, in order to solve the problems in the prior art, an edge trim die material returning structure with simple structure needs to be designed. INVENTION CONTENTS

[0004] The utility model discloses an edge trim die material returning structure to solve the problems in the prior art.

[0005] The utility model discloses an edge trim die material returning structure to solve the problems in the prior art.

[0006] Further improvement, the material returning pin includes the limiting portion and the guide rod portion, the guide rod portion is fixed to the limiting portion both ends and the diameter is less than the limiting portion diameter setting, the inner diameter of the containing chamber is equal to the diameter of the limiting portion, the through -hole diameter of the fixed plate is equal to the guide rod portion diameter and is arranged.

[0007] Further improvement, the containing chamber, spring and material returning pin are provided with four groups of symmetry.

[0008] Further improvement, the fixed plate is fixedly connected with the right end surface of the base through the fastening screw.

[0009] Further improvement, the fastening screw is provided with two groups of symmetry.

[0010] Further improvement, the middle part of the rod cavity includes the stepped cavity.

[0011] Compared with the prior art, the edge trim die material returning structure has the beneficial effects of:

[0012] The material returning structure of the present application discards the three ejector pins at the tail end of the traditional trimming die, and instead adds multiple springs at the front end of the die rod and a material returning pin to the die; the threaded rod at the front section of the material returning pin is connected with the die washer, and the rear section of the material returning pin is inside the spring. Once the die washer is pressed, the spring will be pressed down, and the counter pressure generated by the spring can successfully eject the waste material, and is suitable for molds with small appearance size and large trimming head type. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the present application

[0014] Fig. 2 It is a structural schematic view of the present application

[0015] Fig. 3 It is a structural schematic view of the present application

[0016] Fig. 4 It is a structural schematic view of the present application

[0017] Fig. 5 It is a structural schematic view of the present application

[0018] In the figure, 1 is a base, 11 is a rod cavity, 111 is a stepped cavity, 12 is a containing cavity, 2 is a die rod, 3 is a punch, 4 is a fixed plate, 41 is a through hole, 5 is a die washer, 6 is a spring, 7 is a material returning pin, 71 is a limiting part, 72 is a guide rod part, and 8 is a fastening screw. DETAILED DESCRIPTION

[0019] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0020] In the description of the present application, it should be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The following will be described in combination with the embodiments and drawings Figs. 1-5 The technical scheme of the present application will be further described.

[0022] Example 1

[0023] The structure of the material returning of the trimming die comprises a base 1, a die rod 2, a punch 3, a fixed plate 4, a die gasket 5, a spring 6 and a material returning pin 7, the inside of the base 1 is provided with a rod cavity 11 which is through to the outside, the end face of the base 1 is provided with a containing cavity 12, the die rod 2 is arranged in the rod cavity 11, the fixed plate 4 is sleeved on the right side of the die rod 2 and connected with the right end face of the base 1, the spring 6 is arranged in the containing cavity 12, the left end of the material returning pin 7 is located in the inside of the spring 6, the right end of the material returning pin 7 passes through the fixed plate 4 and is connected with the die gasket 5, and the punch 3 is connected with the right end of the die rod 2 and located at the right end of the die gasket 5.

[0024] As shown in Figs. 1-5 The use principle of the utility model is: the material returning structure of the utility model discloses the three ejector pins of the tail end of the traditional trimming die, and instead, a plurality of springs 6 and the material returning pin 7 of the die are additionally arranged at the front end of the die rod 2.The threaded rod of the front section of the material returning pin 7 is connected with the die gasket 5, and the rear section of the material returning pin 7 is located in the inside of the spring 6.Once the die gasket 5 is extruded, the spring 6 will be pressed down, and the counter pressure generated by the spring 6 can smoothly eject the waste, and it is suitable for the die with small appearance size and the lower cutting and stripping of the trimming head with large size.

[0025] As a further preferred embodiment, the material returning pin 7 comprises a limiting portion 71 and a guide rod portion 72, the guide rod portion 72 is fixed at both ends of the limiting portion 71 and is arranged with a diameter smaller than that of the limiting portion 71, the inner diameter of the containing cavity 12 is equal to the diameter of the limiting portion 71, and the diameter of the through hole 41 of the fixed plate 4 is equal to that of the guide rod portion 72, so that the material returning pin 7 can move freely in the containing cavity 12, and at the same time, the limiting portion 71 limits the movement range of the material returning pin 7, preventing it from moving excessively or falling off; the diameter of the guide rod portion 72 is equal to that of the through hole 41, ensuring the close fit between the material returning pin 7 and the fixed plate 4, and improving the stability and reliability of the structure.

[0026] As a further preferred embodiment, the containing cavity 12, the spring 6 and the material returning pin 7 are symmetrically arranged in four groups, and the uniformly distributed springs and material returning pins can more effectively disperse the stamping force, ensuring the balance and uniform stress of the die in all directions.

[0027] As a further preferred embodiment, the fixed plate 4 is fixedly connected with the right end face of the base 1 through a fastening screw 8, when the fixed plate 4 needs to be replaced or maintained, it can be quickly disassembled by loosening the fastening screw 8, without the need to replace the entire base 1, thereby reducing the maintenance cost and time.

[0028] As a further preferred embodiment, the fastening screws 8 are symmetrically provided in two groups, which can provide more uniform fixing force, prevent the fixing plate 4 from being offset or deformed due to uneven force, and improve the overall stability and precision of the mold.

[0029] As a further preferred embodiment, the middle part of the rod cavity 11 comprises a stepped cavity 111, which can improve the positioning precision of the punch rod 2, prevent the punch rod 2 from being offset when subjected to force, and also possibly help to disperse the punching force, reduce the wear of the punch rod 2, and improve the durability of the mold.

[0030] The preferred embodiments of the utility model are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the conception of the utility model. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the conception of the utility model shall be within the protection scope defined by the claims.

Claims

1. A material ejection structure for a trimming die, characterized in that, It includes a base, a die rod, a punch, a fixed plate, a die gasket, a spring and a material return pin, the base is internally provided with a rod cavity penetrating outward, the end face of the base is provided with a containing cavity, the die rod is arranged in the rod cavity, the fixed plate is sleeved on the right side of the die rod and connected with the right end face of the base, the spring is arranged in the containing cavity, the left end of the material return pin is located in the spring, the right end of the material return pin penetrates through the fixed plate and is connected with the die gasket, and the punch is connected with the right end of the die rod and located at the right end of the die gasket. The material return pin includes a limiting part and a guide rod part, the guide rod part is fixed at both ends of the limiting part and arranged with a diameter smaller than that of the limiting part, the inner diameter of the containing cavity is equal to the diameter of the limiting part, and the diameter of the through hole of the fixed plate is equal to that of the guide rod part.

2. The stripper structure of a trimming die according to claim 1, wherein The containing cavity, the spring and the material return pin are symmetrically provided with four groups.

3. The stripper structure of a trimming die according to claim 1, wherein The fixed plate is fixedly connected with the right end face of the base through a fastening screw.

4. The stripper structure of a trimming die according to claim 1, wherein The fastening screw is symmetrically provided with two groups.

5. The stripper structure of a trimming die according to claim 4, wherein The middle part of the rod cavity includes a stepped cavity.

6. The material withdrawal structure of a trimming die according to claim 1, wherein ​

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