Chamfering die

Abstract

The utility model discloses a chamfering die which comprises an upper die mechanism and a lower die mechanism, and the lower die mechanism comprises a lower die body and a lower chamfering stamping knife. The lower chamfering stamping knife forms a second forming groove, and the end, forming the second forming groove, of the lower chamfering stamping knife faces the upper die mechanism. The upper die mechanism comprises an upper die body, an upper chamfering stamping knife and a pressure applying piece. The upper chamfering stamping knife forms a first forming groove, and the groove wall of the first forming groove and the groove wall of the second forming groove are used for chamfering the upper edge and the lower edge of the to-be-chamfered part of a workpiece. The pressure applying piece is used for applying acting force in the die assembly direction of the upper die body to the upper chamfering stamping knife, and when the upper die body drives the upper chamfering stamping knife to move in the die assembly direction till the upper chamfering stamping knife extrudes a workpiece, the upper die body continues to drive the upper chamfering stamping knife to move in the die assembly direction. And the pressure applying piece pushes the upper chamfering stamping knife to move along the die assembly direction.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to chamfering die. Background Technology

[0002] Some workpieces require chamfering after stamping to remove burrs caused by machining. Chamfering dies are divided into two types: one-piece chamfering dies and two-piece chamfering dies.

[0003] The integrated chamfering mold includes an upper mold mechanism and a lower mold mechanism. The upper mold mechanism includes an upper mold body and an upper chamfering punch fixedly mounted on the upper mold body. The lower mold mechanism includes a lower mold body and a lower chamfering punch fixedly mounted on the lower mold body. A drive mechanism drives the upper mold body to move along the mold closing direction, causing the upper mold body to move downwards along with the upper chamfering punch. This results in the upper and lower edges of the workpiece to be chamfered, placed on the upper surface of the lower mold mechanism, being chamfered simultaneously. Because the force of the drive mechanism is directly applied to the upper mold body, the upper mold body buffers some of the force, reducing the force exerted by the upper chamfering punch on the part to be chamfered. If the force of the drive mechanism is increased, the upper mold body will excessively compress the lower mold body, causing damage to the lower mold body. Therefore, the integrated chamfering mold cannot meet the requirements for large-angle chamfering.

[0004] A split-type chamfering die includes an upper die mechanism and a lower die mechanism. The upper die mechanism includes an upper die body and an upper chamfering punch slidably mounted on the upper die body. The lower die mechanism includes a lower die body and a lower chamfering punch fixedly mounted on the lower die body. After the drive mechanism drives the upper die body to close onto the lower die body, the lower edge of the part of the workpiece to be chamfered is chamfered first. Then, the drive mechanism drives the upper chamfering punch to close the die, causing the upper edge of the part of the workpiece to be chamfered to be chamfered. The sequential closing of the upper die body and the upper chamfering punch causes the workpiece to be bent and then flattened, resulting in creases on the surface of the chamfered workpiece, affecting its appearance. Utility Model Content

[0005] To solve the aforementioned technical problems and achieve at least one advantage of this utility model, this utility model provides a chamfering mold, which includes an upper mold mechanism and a lower mold mechanism, wherein the lower mold mechanism includes:

[0006] Lower mold body;

[0007] A lower chamfering punch forms a second forming groove. The lower chamfering punch is mounted on the lower mold body, and one end of the lower chamfering punch forming the second forming groove faces the upper mold mechanism.

[0008] The upper mold mechanism includes:

[0009] The upper mold body forms a sliding channel and is mounted above the lower mold mechanism in an openable and closable manner.

[0010] An upper chamfering punch is slidably mounted on the sliding channel formed by the upper mold body along the opening and closing direction of the upper mold body. The upper chamfering punch forms a first forming groove. One end of the upper chamfering punch forming the first forming groove is close to the lower mold mechanism. The groove wall of the first forming groove and the groove wall of the second forming groove are used to chamfer the upper and lower edges of the part of the workpiece to be chamfered.

[0011] A pressure-applying component is installed on the upper die body to apply a force to the upper chamfering punch along the die-closing direction of the upper die body. When the upper die body drives the upper chamfering punch to move along the die-closing direction until the upper chamfering punch presses the workpiece, the upper die body continues to drive the upper chamfering punch to move along the die-closing direction, and the pressure-applying component pushes the upper chamfering punch to move along the die-closing direction.

[0012] According to one embodiment of the present invention, the upper chamfering punch is connected to the pressure-applying member.

[0013] According to one embodiment of the present invention, the pressure-applying component is located on the side of the upper chamfering punch facing away from the lower chamfering punch, and the pressure-applying component is located on the trajectory of the upper chamfering punch moving along the mold opening direction of the upper mold body.

[0014] According to one embodiment of the present invention, the pressure-applying member is located on the side of the upper chamfering punch facing away from the lower chamfering punch, the upper mold body forms an upper stop wall, and the upper stop wall is located on the path along which the upper chamfering punch moves in the mold opening direction of the upper mold body.

[0015] According to one embodiment of the present invention, the upper mold body further forms a lower stop wall, which is located on the moving path of the upper chamfering punch along the mold closing direction of the upper mold body. When the upper mold body opens, the upper chamfering punch automatically falls to abut against the lower stop wall under the action of gravity.

[0016] According to one embodiment of the present invention, the lower mold body includes a lower mold base and a stripper. The stripper includes a stripper plate. The stripper plate is movably mounted on the lower mold base along the opening and closing direction of the upper mold body. The stripper plate forms a hidden channel. The lower chamfering punch is mounted on the lower mold base and passes through the hidden channel formed by the stripper plate. The workpiece part overlaps the surface of the stripper plate, and the chamfered part of the workpiece is directly opposite the position of the second forming groove.

[0017] According to one embodiment of the present invention, the lower mold body further includes a reset member, which is connected to the lower mold base and the stripper plate. The reset member is configured to undergo elastic deformation. In the mold-opening state, the reset member supports the stripper plate, and at least part of the end of the lower chamfering punch forming the second forming groove is hidden in the hidden channel. When the upper mold body moves along the mold-closing direction, it presses down on the stripper plate and the reset member undergoes elastic deformation.

[0018] According to one embodiment of the present invention, the stripping component further includes a guide rod, which is connected to the stripping plate and inserted into the reset component.

[0019] According to one embodiment of the present invention, the upper mold body includes an upper mold base and a push rod. The upper mold base is fixedly connected to the push rod. The pressure applying member is installed on the upper mold base. The upper mold base forms the sliding channel, the upper stop wall, and the lower stop wall. The push rod is used to press down the stripper plate.

[0020] According to one embodiment of the present invention, the upper mold base forms at least one movable groove, the push rod is slidably inserted into the movable groove, the upper mold body further includes a buffer member, the push rod is connected to the buffer member, and the buffer member is configured to undergo elastic deformation. Attached Figure Description

[0021] Figure 1 A schematic diagram illustrating a usage scenario of the chamfering mold described in this utility model is shown.

[0022] Figure 2 This invention provides a cross-sectional view of the chamfering mold at an angle in the open state.

[0023] Figure 3 This invention provides a cross-sectional view of the chamfering mold in its open state at another angle.

[0024] Figure 4 It shows Figure 3 A cross-sectional view of the chamfering mold of this utility model at the preparatory stage under an angle.

[0025] Figure 5 It shows Figure 2 A cross-sectional view of the chamfering mold of this utility model at the forming stage under an angle. Detailed Implementation

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] refer to Figures 1 to 5 A preferred embodiment of the chamfering mold according to this utility model will be described in detail below. The chamfering mold chamfers the upper and lower edges of the part of the workpiece to be chamfered. The chamfering mold includes an upper mold mechanism 10 and a lower mold mechanism 20.

[0030] The upper mold mechanism 10 includes an upper mold body 11, an upper chamfering punch 12, and a pressure applying member 13. The upper mold body 11 is mounted above the lower mold mechanism 20 in an openable / closable manner. The upper mold body 11 forms a sliding channel 1101, and the upper chamfering punch 12 is mounted in the sliding channel 1101 formed by the upper mold body 11, and the upper chamfering punch 12 is configured to slide along the opening and closing direction of the upper mold body 11. The upper chamfering punch 12 forms a first forming groove 1201, and one end of the upper chamfering punch 12 forming the first forming groove 1201 is close to the lower mold mechanism 20. The pressure applying member 13 is mounted on the upper mold body 11 and is used to apply a force to the upper chamfering punch 12 along the closing direction of the upper mold body 11.

[0031] The lower mold mechanism 20 includes a lower mold body 21 and a lower chamfering punch 22. The lower chamfering punch 22 forms a second forming groove 2201. The lower chamfering punch 22 is mounted on the lower mold body 21, and one end of the lower chamfering punch 22 forming the second forming groove 2201 faces the upper mold mechanism 10.

[0032] Specifically, in the open mold state, the workpiece is placed on the side of the lower mold mechanism 20 facing the upper mold mechanism 10 with the portion to be chamfered corresponding to the positions of the first forming groove 1201 and the second forming groove 2201. Then, the upper mold body 11 drives the upper chamfering punch 12 to move along the mold closing direction, so that the portion of the workpiece to be chamfered is placed in the first forming groove 1201 and the second forming groove 2201. Consequently, the groove walls of the first forming groove 1201 and the second forming groove 2201 simultaneously chamfer the upper and lower edges of the portion to be chamfered. Since the upper and lower edges of the portion to be chamfered are simultaneously subjected to force, the workpiece will not bend during the chamfering process, thus ensuring that no creases are formed on the workpiece. It is worth mentioning that, at the same time as the upper mold mechanism 10 and the lower mold mechanism 20 close the mold, the pressure applying member 13 applies a force to the upper chamfering punch 12 along the mold closing direction of the upper mold body 11. Compared with the force applied by the upper mold body 11 to the workpiece, the force applied by the upper chamfering punch 12 to the workpiece is greater. As a result, the upper chamfering punch 12 and the lower chamfering punch 22 can easily punch the upper and lower edges of the part of the workpiece to be chamfered. In this way, the workpiece can also obtain a larger chamfer angle.

[0033] In other words, the entire process of the upper mold mechanism 10 closing onto the lower mold mechanism 20 can be divided into two stages: a preparation stage and a forming stage. In the preparation stage, the upper mold body 11 moves the upper chamfering punch 12 along the mold-closing direction until the upper mold mechanism 10 moves to the point where the upper chamfering punch 12 presses against the workpiece. At this point, the upper mold mechanism 10 switches from the preparation stage to the forming stage. In the forming stage, the upper mold body 11 continues to move the upper chamfering punch 12 along the mold-closing direction. Simultaneously, the pressure-applying component 13 pushes the upper chamfering punch 12 downwards to increase the force exerted on the workpiece by the upper chamfering punch 12 and the lower chamfering punch 22.

[0034] In one embodiment, the upper chamfering punch 12 is connected to the pressure applying member 13. When the upper mold mechanism 10 switches from the preparatory stage to the forming stage, the pressure applying member 13 applies a force to the upper chamfering punch 12 along the mold closing direction of the upper mold body 11. When the upper mold body 11 moves along the mold opening direction, the pressure applying member 13 drives the upper chamfering punch 12 to reset.

[0035] In a modified embodiment, the pressure-applying member 13 is located on the side of the upper chamfering punch 12 facing away from the lower chamfering punch 22. In the preparatory stage, the upper die body 11 moves the upper chamfering punch 12 along the die-closing direction. When the upper chamfering punch 12 reaches contact with the workpiece, it remains stationary due to the workpiece's obstruction. The upper die body 11 continues to move in the die-closing direction until the end of the upper chamfering punch 12 away from the workpiece is abutted. The upper die body 11 then continues to move the upper chamfering punch 12 along the die-closing direction, causing the upper chamfering punch 12 to apply pressure to the workpiece, thereby switching the upper die mechanism 10 from the preparatory stage to the forming stage. In the forming stage, the pressure-applying member 13 pushes the upper chamfering punch 12 downwards, causing the upper chamfering punch 12 and the lower chamfering punch 22 to chamfer the upper and lower edges of the portion of the workpiece to be chamfered. Furthermore, when the upper mold body 11 moves along the mold opening direction, the upper chamfering punch 12 automatically resets under its own gravity.

[0036] As an example of the above modified embodiment, the pressure-applying member 13 is located on the trajectory of the upper chamfering punch 12 moving along the mold opening direction of the upper mold body 11. When the upper chamfering punch 12 moves to contact the workpiece, the upper mold body 11 continues to move along the mold closing direction while the upper chamfering punch 12 remains stationary due to the obstruction of the workpiece, until the end of the upper chamfering punch 12 away from the workpiece abuts against the pressure-applying member 13.

[0037] In another example, the upper die body 11 forms an upper stop wall 1102, which is located on the path along which the upper chamfering punch 12 moves in the opening direction of the upper die body 11. When the upper chamfering punch 12 moves to abut against the workpiece, the upper die body 11 continues to move downward while the upper chamfering punch 12 remains stationary due to the obstruction of the workpiece, until the end of the upper chamfering punch 12 away from the workpiece abuts against the upper stop wall 1102, preventing the upper chamfering punch 12 from colliding with the pressure member 13, thereby protecting the upper chamfering punch 12 and the pressure member 13 and extending the service life of the chamfering die.

[0038] As an example, the pressure-applying member 13 is implemented as including a cylinder, wherein the telescopic end of the cylinder faces the upper chamfering punch 12.

[0039] Preferably, the upper mold body 11 further forms a lower stop wall 1103. The lower stop wall 1103 is located on the moving path of the upper chamfering punch 12 along the mold closing direction of the upper mold body 11. When the upper mold body 11 opens, the upper chamfering punch 12 automatically falls under the action of gravity and abuts against the lower stop wall 1103 to support the upper chamfering punch 12 and limit the falling distance of the upper chamfering punch 12.

[0040] In one embodiment, the lower mold body 21 includes a lower mold base 211 and a stripper 212. The stripper 212 includes a stripper plate 2121, which is movably mounted on the lower mold base 211 along the opening and closing direction of the upper mold body 11. The stripper plate 2121 forms a hidden channel 212101, and the lower chamfering punch 22 is mounted on the lower mold base 211 and passes through the hidden channel 212101 formed by the stripper plate 2121.

[0041] Preferably, the lower mold body 21 further includes a reset member 213. The reset member 213 is connected to the lower mold base 211 and the stripper plate 2121. The reset member 213 is configured to undergo elastic deformation. In the mold-open state, the reset member 213 supports the stripper plate 2121, and at least part of the end of the lower chamfering punch 22 forming the second forming groove 2201 is hidden in the hidden channel 212101. The workpiece part overlaps the surface of the stripper member 212, so that the part of the workpiece to be chamfered is directly opposite the position of the second forming groove 2201. In the preparation stage, when the upper mold body 11 moves along the mold-closing direction, it presses down the stripper plate 2121. At this time, the reset member 213 is compressed, which drives the stripper plate 2121 to descend, so that the upper and lower edges of the part of the workpiece to be chamfered move into the first forming groove 1201 and the second forming groove 2201, so as to facilitate subsequent chamfering. After the chamfering is completed, the upper mold mechanism 10 moves along the mold opening direction, and the reset member 213 drives the stripper plate 2121 to move upward to reset through its own elastic force. At the same time, the stripper plate 2121 ejects the workpiece, thereby achieving rapid demolding.

[0042] In one example, the reset element 213 is implemented as a spring.

[0043] Preferably, the stripper 212 further includes a guide rod 2122. The guide rod 2122 is connected to the stripper plate 2121 and is inserted into the reset member 213 to improve the stability of the stripper plate 2121 when it moves along the opening and closing direction of the upper mold body 11.

[0044] Specifically, the upper mold body 11 includes an upper mold base 111 and a push rod 112. The push rod 112 is mounted on the upper mold base 111, and the pressure applying member 13 is mounted on the upper mold base 111. The upper mold base 111 forms the sliding channel 1101, the upper stop wall 1102, and the lower stop wall 1103. The push rod 112 is used to press down the stripper plate 2121.

[0045] In one embodiment, the upper mold base 111 is fixedly connected to the push rod 112.

[0046] As deformable, the upper mold base 111 forms at least one movable groove 11101, and the ejector rod 112 is slidably inserted into the movable groove 11101. The upper mold body 11 also includes a buffer member 113, the ejector rod 112 is connected to the buffer member 113, and the buffer member 113 is configured to undergo elastic deformation. During the preparation stage, the upper mold body 11 moves along the mold closing direction, and the ejector rod 112 presses down on the stripper plate 2121 until the stripper plate 2121 abuts against the lower mold base 211. The upward resistance experienced by the ejector rod 112 is greater than the downward pressure experienced by itself, causing the ejector rod 112 to move along the mold opening direction. At this time, the buffer member 113 undergoes elastic deformation, thereby relieving the pressure of the ejector rod 112 on the stripper member 212, preventing the ejector rod 112 from continuously pressing on the stripper plate 2121, avoiding hard compression between the ejector rod 112 and the stripper plate 2121, and thus protecting the ejector rod 112 and the stripper plate 2121.

[0047] In one example, the buffer 113 is implemented as a spring.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A chamfering die, characterized in that, The chamfering mold includes an upper mold mechanism and a lower mold mechanism, wherein the lower mold mechanism includes: Lower mold body; A lower chamfering punch forms a second forming groove. The lower chamfering punch is mounted on the lower mold body, and one end of the lower chamfering punch forming the second forming groove faces the upper mold mechanism. The upper mold mechanism includes: The upper mold body forms a sliding channel and is mounted above the lower mold mechanism in an openable and closable manner. An upper chamfering punch is slidably mounted on the sliding channel formed by the upper mold body along the opening and closing direction of the upper mold body. The upper chamfering punch forms a first forming groove. One end of the upper chamfering punch forming the first forming groove is close to the lower mold mechanism. The groove wall of the first forming groove and the groove wall of the second forming groove are used to chamfer the upper and lower edges of the part of the workpiece to be chamfered. A pressure-applying component is installed on the upper die body to apply a force to the upper chamfering punch along the die-closing direction of the upper die body. When the upper die body drives the upper chamfering punch to move along the die-closing direction until the upper chamfering punch presses the workpiece, the upper die body continues to drive the upper chamfering punch to move along the die-closing direction, and the pressure-applying component pushes the upper chamfering punch to move along the die-closing direction.

2. The chamfering die according to claim 1, characterized in that, The upper chamfering punch is connected to the pressure-applying member.

3. The chamfering die according to claim 1, characterized in that, The pressure-applying component is located on the side of the upper chamfering punch facing away from the lower chamfering punch, and the pressure-applying component is located on the trajectory of the upper chamfering punch moving along the mold opening direction of the upper mold body.

4. The chamfering die according to claim 1, characterized in that, The pressure-applying component is located on the side of the upper chamfering punch facing away from the lower chamfering punch, and the upper die body forms an upper stop wall, which is located on the path along which the upper chamfering punch moves in the mold opening direction of the upper die body.

5. The chamfering die according to claim 4, characterized in that, The upper mold body also forms a lower stop wall, which is located on the moving path of the upper chamfering punch along the mold closing direction of the upper mold body. When the upper mold body opens, the upper chamfering punch automatically falls to abut against the lower stop wall under the action of gravity.

6. The chamfering die according to claim 5, characterized in that, The lower mold body includes a lower mold base and a stripper. The stripper includes a stripper plate. The stripper plate is movably mounted on the lower mold base along the opening and closing direction of the upper mold body. The stripper plate forms a hidden channel. The lower chamfering punch is mounted on the lower mold base and passes through the hidden channel formed by the stripper plate. The workpiece part overlaps the surface of the stripper plate, and the chamfered part of the workpiece is directly opposite the position of the second forming groove.

7. The chamfering die according to claim 6, characterized in that, The lower mold body also includes a reset member, which is connected to the lower mold base and the stripper plate. The reset member is configured to undergo elastic deformation. In the mold open state, the reset member supports the stripper plate, and at least part of the end of the lower chamfering punch forming the second forming groove is hidden in the hidden channel. When the upper mold body moves along the mold closing direction, it presses down on the stripper plate and the reset member undergoes elastic deformation.

8. The chamfering die according to claim 7, characterized in that, The stripping component also includes a guide rod, which is connected to the stripping plate and inserted into the reset component.

9. The chamfering die according to claim 8, characterized in that, The upper mold body includes an upper mold base and a push rod. The upper mold base is fixedly connected to the push rod. The pressure applying member is installed on the upper mold base. The upper mold base forms the sliding channel, the upper stop wall, and the lower stop wall. The push rod is used to press down the stripper plate.

10. The chamfering die according to claim 9, characterized in that, The upper mold base forms at least one movable groove, the ejector rod is slidably inserted into the movable groove, the upper mold body also includes a buffer member, the ejector rod is connected to the buffer member, and the buffer member is configured to undergo elastic deformation.

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