Upper side punching structure of punching die

Abstract

The utility model discloses an upper side punching structure of a punching die, an upper die is further provided with an inserting plate, a stripper plate, an upper die insert core and a punch, the inserting plate is arranged on an upper die base, one side wall of the inserting plate is an inclined plane, the stripper plate is arranged below the inserting plate, the upper die insert core is arranged on the stripper plate, and a first inclined slide way and a second inclined slide way are formed on the upper die insert core. One end of the first sliding way obliquely extends to the side of the inclined face, and the punch is arranged on the first sliding way and the second sliding way in a sliding mode. The upper die insert core and the punch are both of a combined structure, the machining difficulty and the machining cost of the upper die insert core can be obviously reduced, the high-precision upper die insert core can be machined more easily under the same machining condition, and therefore the purposes of improving the displacement precision of the punch and improving the position precision of a side hole are achieved. And the extrusion force of the punch to the plate in the die assembly process can be relieved, the purpose of avoiding or reducing deformation or breakage of the side area of the punched hole in the upper side of the plate is achieved, and the side punching yield is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die technical field, especially relates to punch die upper side punch structure. BACKGROUND

[0002] When cutting side hole with punch die, if the cutting surface is inclined to the closing direction and the structure layout of the lower die is limited, generally the side punch is arranged on the upper die, and the structure is arranged as follows: the punch is arranged obliquely, and in the closing process, the upper die pushes the punch to translate obliquely and cuts the side hole on the plate material placed on the lower die. How to ensure the running track of the punch in this die process is a difficulty in die design and manufacturing, because the punch needs to translate obliquely for a relatively long distance in the closing process, and the upper die insert needs to be an inclined structure or an inclined guide hole and groove are machined on it to guide and limit the sliding track of the punch. Compared with machining a plane or a vertical hole and groove, the difficulty of machining an inclined surface and an inclined hole and groove is higher, and the extension depth of the inclined surface or hole and groove is deeper, so the machining difficulty and cost are higher. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a punch die upper side punch structure, the upper die insert and the punch are both arranged as a combined structure, which can obviously reduce the machining difficulty and cost of the upper die insert, and under the same machining condition, the upper die insert with high precision can be more easily machined, so as to improve the precision of the displacement of the punch and improve the position precision of the side hole, and the extrusion force of the punch on the plate material in the closing process can be reduced, so as to avoid or reduce the deformation or fracture of the side punch hole side area on the plate material and improve the side punch yield.

[0004] To solve the above technical problems, the utility model adopts a technical scheme as follows:

[0005] The punch die upper side punch structure is provided with an upper die and a lower die, the upper die is provided with an upper die seat, the lower die is provided with a lower die plate and an obliquely arranged lower die insert, and the upper die is further provided with an insertion plate, a stripping plate, an upper die insert and a punch.

[0006] The insertion plate is arranged on the upper die seat and extends towards the lower die along the closing direction, and one side wall of the insertion plate is provided with an inclined surface.

[0007] The stripping plate is arranged at the lower end of the upper die and below the insertion plate, and the stripping plate is movably connected with the upper die seat through a limiting piece and can slide relative to the upper die seat along the closing direction under the action of an external force, so that the insertion plate slides relative to the stripping plate.

[0008] The upper die insert is detachably fixed on the stripper plate, and comprises a first insert and a second insert which can be matched and buckled, and a first slide and a second slide which are inclined and extend in the same direction and are communicated with each other are formed on the first insert and the second insert respectively; the first insert is close to the insert plate, and one end of the first slide on the first insert is inclined and extends to the side of the inclined surface; the lower end of the second insert is matched with the lower die insert;

[0009] The punch is slidably arranged on the upper die insert, and comprises a positioning plate and a punch which are detachably fixed and arranged on the first insert, the positioning plate is matched with the first slide, and the punch extends in the same direction with the first slide and is matched with the second slide.

[0010] As a further elaboration of the above technical solutions:

[0011] In the above technical solutions, the first insert is a right-angled triangular structure, a protrusion which extends in the same direction with the first slide is arranged on the longest side of the first insert, and the first slide is arranged between the protrusion and one of the right-angled sides; the second insert is a trapezoidal structure, the shortest side of the second insert is matched with the lower die insert, and a clamping groove which is matched with the protrusion is arranged on the longest side of the second insert, and the second slide is arranged between the clamping groove and the shortest side.

[0012] In the above technical solutions, the first slide and the second slide are both holes and grooves which penetrate the first insert or the second insert.

[0013] In the above technical solutions, the positioning plate comprises a first plate and a second plate which can be matched and buckled, one end of the first plate is matched with the inclined surface, the other end of the first plate is detachably fixed with the punch, and a guide through hole which is matched with the punch is arranged on the second plate.

[0014] In the above technical solutions, a buffer spring is further arranged between the first plate and the second plate.

[0015] Compared with the prior art, the beneficial effects of the utility model lie in that: by setting the upper die insert as a combined structure of the first insert and the second insert, not only the assembly of the punch is facilitated, but also the machining difficulty and cost of the inclined first slide and the second slide are obviously reduced, the first insert and the second insert are better positioned in the machining, the first slide and the second slide with high precision are more easily machined under the same machining condition, the precision of the punch displacement is improved, and the side hole position precision is improved; by setting the punch as a combined structure of the first plate and the second plate and arranging the buffer spring therebetween, the pushing force and sliding speed of the first plate to the second plate in the mold closing are slowed down, the pushing force of the second plate to the second insert is slowed down, the extrusion force of the second insert to the plate material is slowed down, the deformation or fracture of the side punching side area on the plate material is avoided or reduced, and the side punching yield is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the mold opening state of the embodiment;

[0017] Figure 2 is the exploded structural schematic diagram of the upper die insert in the embodiment;

[0018] Figure 3 is the exploded structural schematic diagram of the punch in the embodiment.

[0019] In the figure: 10, upper die seat; 20, lower die plate; 30, lower die insert; 40, insert plate; 41, inclined surface; 50, stripper plate; 60, upper die insert; 61, first insert; 62, second insert; 63, first slide; 64, second slide; 65, protrusion; 66, recess; 70, punch; 71, positioning plate; 72, punch pin; 1, first plate; 2, second plate; 3, guide through hole; 4, buffer spring. DETAILED DESCRIPTION

[0020] The utility model will be made further detailed description in combination with the drawings.

[0021] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships as shown in the drawings, and are merely used for the purpose of ease of description and simplification of the description, and do not indicate or imply that the device or element indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are used only for the purpose of description and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Thus, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature with respect to the second feature can include the first and second features directly contacting each other, or the first and second features not directly contacting each other but contacting each other through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature with respect to the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The "lower", "lower" and "lower" of the first feature with respect to the second feature include the first feature directly below and obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0022] As Figure 1As shown, the stamping die has an upper side punch structure. The stamping die is provided with an upper die and a lower die. The upper die is provided with an upper die base 10, and the lower die is provided with a lower die template 20 and an inclined lower die insert 30. The upper die is also provided with an insert plate 40, a stripper plate 50, an upper die insert 60, and a punch 70. The insert plate 40 is provided on the upper die base 10 and extends towards the lower die along the die closing direction. One side wall of the insert plate 40 is provided with an inclined surface 41. The stripper plate 50 is provided at the lower end of the upper die and below the insert plate 40. The stripper plate 50 is movably connected to the upper die base 10 through a limiting member and can slide relative to it along the die closing direction under the action of external force, so that the insert plate 40 slides relative to it.

[0023] like Figure 2 As shown, the upper mold insert 60 is detachably fixed to the stripper plate 50, including a first insert 61 and a second insert 62 that can be matched and fastened. The first insert 61 and the second insert 62 are respectively formed with a first slide rail 63 and a second slide rail 64 that extend in the same direction and are interconnected. The first insert 61 is close to the insert plate 40 and one end of the first slide rail 63 extends obliquely to the side of the inclined surface 41. The lower end of the second insert 62 is adapted to the lower mold insert 30. In this embodiment, the first insert 61 has a right-angled triangular structure, with a protrusion 65 extending in the same direction as the first slide rail 63 on its longest side, and the first slide rail 63 is provided between the protrusion 65 and the right-angled side. The second insert 62 has a trapezoidal structure, with its shortest side adapted to the lower mold insert 30, and a slot 66 adapted to the protrusion 65 on its longest side, and the second slide rail 64 is provided between the slot 66 and the shortest side. In this embodiment, both the first slide rail 63 and the second slide rail 64 are slots that pass through the first insert 61 or the second insert 62.

[0024] Understandably, the combined structure of the first insert 61 and the second insert 62 on the upper die insert 60 not only facilitates the assembly of the punch 60, but also significantly reduces the machining difficulty and cost of the inclined first slide 63 and the second slide 64. During machining, it is easier to better position the first insert 61 and the second insert 62, and under the same machining conditions, it is easier to machine the first slide 63 and the second slide 64 with high precision, thereby improving the accuracy of the punch 70 displacement and achieving the goal of improving the positional accuracy of the side hole.

[0025] like Figure 3 As shown, the punch 70 is slidably mounted on the upper die insert 60, including a positioning plate 71 and a punch 72 detachably fixed to and mounted on the first insert 61. The positioning plate 71 is adapted to the first slide rail 63, and the punch 72 extends in the same direction as the first slide rail 63 and is adapted to the second slide rail 64. In this embodiment, the positioning plate 71 includes a first plate 1 and a second plate 2 that can be matched and fastened. One end of the first plate 1 is adapted to the inclined surface 41, and the other end is detachably fixed to the punch 72. The second plate 2 is provided with a guide hole 3 adapted to the punch 72. In this embodiment, a buffer spring 4 is also provided between the first plate 1 and the second plate 2.

[0026] It can be understood that the buffer spring 4 can slow down the pushing force and sliding speed of the first plate 1 relative to the second plate 2, thereby slowing down the pushing force of the second plate 2 on the second punch 62, and further slowing down the extrusion force of the second punch 62 on the plate material, so as to avoid or reduce the deformation or fracture of the side punching area on the upper side of the plate material, and improve the side punching yield.

[0027] During assembly, the first punch 61 and the second punch 62 are clamped and fixed to form the upper die punch 60, the punch 72 is assembled and fixed with the first plate 1, the buffer spring 4 is assembled between the first plate 1 and the second plate 2 and clamped and connected together to form the punch head 70, and then the punch head 70 is assembled on the upper die punch 60; after completion, the upper die punch assembly 60 is fixed on the stripper plate 50, and the end of the first plate 1 is located on the side of the inclined surface 41 of the insert 40.

[0028] When the mold is closed, the upper die moves towards the lower die, the stripper plate 50 first contacts and presses the plate material, the upper die continues to move downward, the insert 40 is driven by the upper die seat 10 to move downward relative to the stripper plate, the punch head 70 is pushed to slide on the first slide 63 and the second slide 64, and the punch 72 cooperates with the lower die punch 30 to punch and cut the side hole on the plate material. When the mold is opened, the upper die moves away from the lower die, the limiting piece makes the stripper plate 50 temporarily disengage from the upper die, the plate material is continuously pressed, the insert 40 is driven by the upper die seat 10 to move upward, the buffer spring 4 pushes the first plate 1 to slide upward in the first slide 63 under the action of the rebound force, and the punch 72 is synchronously moved upward to leave the plate material; after the upper die moves a certain distance, the limiting piece pulls the stripper plate 50 to synchronously move upward to leave the plate material, and the side punching action is completed.

[0029] The above is not intended to limit the technical scope of the present application in any way, and any modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belong to the technical scope of the present application.

Claims

1. A stamping die with an upper side punch structure, wherein the stamping die is provided with an upper die and a lower die, the upper die is provided with an upper die base, and the lower die is provided with a lower die template and an inclined lower die insert; characterized in that: The upper die is also provided with an insert plate, a stripper plate, an upper die insert, and a punch, wherein: The insert plate is disposed on the upper mold base and extends toward the lower mold along the mold closing direction, and one side wall of the insert plate is provided with a slope. The stripper plate is located at the lower end of the upper mold and below the insert plate. The stripper plate is movably connected to the upper mold base through a limiting member and can slide relative to it in the mold closing direction under the action of external force, so that the insert plate slides relative to it. The upper mold insert is detachably fixed to the stripper plate and includes a first insert and a second insert that can be matched and fastened. The first insert and the second insert are respectively formed with a first slide rail and a second slide rail that extend in the same direction and communicate with each other. The first insert is close to the insert plate and one end of the first slide rail on it extends obliquely to the side of the inclined surface. The lower end of the second insert is adapted to the lower mold insert. The punch is slidably mounted on the upper die insert and includes a positioning plate and a punch that are detachably fixed to the first insert. The positioning plate is adapted to the first slide rail, and the punch extends in the same direction as the first slide rail and is adapted to the second slide rail.

2. The upper side punch structure of the stamping die according to claim 1, characterized in that, The first insert is a right-angled triangle structure, with a protrusion extending in the same direction as the first slide on its longest side, and the first slide is provided between the protrusion and one of the right-angled sides; the second insert is a trapezoidal structure, with its shortest side adapted to the lower mold insert, and its longest side provided with a groove adapted to the protrusion, and the second slide is provided between the groove and the shortest side.

3. The upper side punch structure of the stamping die according to claim 1, characterized in that, Both the first slide and the second slide are slots that pass through the first insert or the second insert.

4. The upper side punch structure of the stamping die according to any one of claims 1-3, characterized in that, The positioning plate includes a first plate and a second plate that can be matched and fastened. One end of the first plate is adapted to the inclined surface, and the punch is detachably fixed at the other end. The second plate is provided with a guide through hole adapted to the punch.

5. The upper side punch structure of the stamping die according to claim 4, characterized in that, A buffer spring is also provided between the first plate and the second plate.

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