Contactless hobbing die

Abstract

The utility model discloses a contactless hobbing die in the field of punching machines, which comprises a lower die base and an upper die guide base arranged above the lower die base, an upper hobbing cutter is arranged below the upper die guide base, a lower hobbing cutter is arranged above the lower die base, and the upper die guide base and the lower die guide base are oppositely arranged. The upper hobbing cutter and the upper die guide base are rotationally connected through a bearing, and the lower hobbing cutter and the lower die base are rotationally connected through a bearing. Under the guidance of the connecting countersunk head screw and the guide sleeve and the elastic support of the lower die spring, elastic support force can be provided for the lower die feeding plate, the upper die spring can provide elastic downward pressure force for the upper die guide base and the upper hobbing cutter, the springs are installed in the upper die and the lower die of the structure, the idler wheel can be prevented from being pressed and damaged, and the production efficiency is improved. And meanwhile, the scratch risk of the plate is reduced, and compared with a conventional 85-series edge cutting die which needs to be punched in a sericulture mode and can generate a plurality of nodes, the structure can be completely free of joint marks and waste materials, and the time of manual polishing in the later period is shortened.

Description

Technical Field

[0001] This utility model relates to the field of punching machines, specifically to a non-contact rolling die. Background Technology

[0002] When using a punch press, sometimes a rolling die is needed to cut sheet metal. However, in the existing rolling dies, most of them are hard-press cutting when the rolling cutter is pressing down, which cannot effectively protect the rolling cutter. Moreover, when the sheet metal moves, it comes into hard contact with the lower feed plate, which can easily cause scratches. In addition, the cut marks are obvious, and the amount of manual grinding work in the later stage is large.

[0003] Therefore, those skilled in the art have provided contactless rolling dies to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a seamless rolling die to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A contactless rolling cutter includes a lower die base and an upper die guide base disposed above the lower die base. An upper rolling cutter is disposed below the upper die guide base, and a lower rolling cutter is disposed above the lower die base. The upper rolling cutter and the upper die guide base, as well as the lower rolling cutter and the lower die base, are rotatably connected by bearings. Snap rings for limiting the movement are clamped onto the support shafts of both the upper and lower rolling cutters. The upper and lower rolling cutters engage after contact.

[0007] As a further embodiment of this utility model: a lower die feed plate is provided around the lower rolling cutter on the lower die base, and multiple countersunk holes are evenly distributed around the bottom circumference of the lower die base, and multiple threaded holes corresponding to the countersunk holes are provided on the lower die feed plate.

[0008] As a further embodiment of this utility model: the lower mold base and the lower mold feed plate are connected by a countersunk screw passing through a countersunk hole and a threaded hole. A guide sleeve is movably provided around the countersunk screw at the countersunk hole. The guide sleeve is slidably connected to the countersunk hole on the lower mold base. Multiple lower mold springs are clamped and provided between the lower mold base and the lower mold feed plate on one side of the guide sleeve.

[0009] As a further embodiment of this utility model: a cutter bar is slidably connected inside the upper mold guide base, and a locking ring is provided around the cutter bar at the top of the upper mold guide base. The locking ring is connected to the upper mold guide base by screws, and the cutter bar is slidably connected to the locking ring.

[0010] As a further embodiment of this utility model: an open-shaped striking head is provided at the top of the tool bar, and a locking screw is provided on the side wall of the striking head at the opening. The striking head and the tool bar are connected by the locking screw, and an upper die spring is provided around the tool bar between the striking head and the locking ring.

[0011] As a further embodiment of this utility model: an avoidance groove is provided above the lower die feed plate at the lower roller cutter.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention provides elastic support for the lower die feed plate through the guidance of the countersunk screw and guide sleeve, and the elastic support of the lower die spring. The upper die spring provides elastic downward pressure for the upper die guide base and the upper roller cutter. Springs are installed in both the upper and lower dies, which can protect the rollers from being crushed and damaged, and reduce the risk of scratching the sheet metal. Compared with the conventional 85 series edge cutting die, which requires a nibbling step punch and produces many nodes, this structure can achieve completely seamless and waste-free results, reducing the time for manual grinding in the later stage, and has a wide range of applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the lower mold base of this utility model;

[0017] Figure 4 This is a cross-sectional view of the lower mold at the countersunk hole section in this utility model.

[0018] In the diagram: 1. Upper die guide base; 2. Lower die base; 201. Countersunk hole; 202. Connecting countersunk screw; 3. Lower die feed plate; 4. Guide sleeve; 5. Lower die spring; 6. Mounting directional pin; 7. Lower roller cutter; 8. Upper roller cutter; 9. Locking ring; 10. Upper die spring; 11. Impact head; 12. Locking screw; 13. Cutter bar; 14. Snap ring; 15. Bearing. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 In this embodiment of the utility model, the contactless rolling cutter includes a lower die base 2 and an upper die guide base 1 disposed above the lower die base 2. An upper rolling cutter 8 is disposed below the upper die guide base 1, and a lower rolling cutter 7 is disposed above the lower die base 2. The upper rolling cutter 8 and the upper die guide base 1, as well as the lower rolling cutter 7 and the lower die base 2, are rotatably connected by a bearing 15. A retaining spring 14 for limiting is clamped on the support shaft of both the upper rolling cutter 8 and the lower rolling cutter 7. The upper rolling cutter 8 and the lower rolling cutter 7 engage after contact.

[0021] By adopting the above technical solution, the upper die base and the lower die base 2 can be installed on the turret punch press. The turret punch press strike rod presses down the strike head 11, and the upper die assembly contacts the plate between the upper die guide base 1 and the lower die feed plate 3. Then, it continues to press down until the plate is cut through. The machine tool clamp drags the plate along the XY axis to cut the plate according to the programmed graphic.

[0022] Among them, the lower die base 2 has a lower die feed plate 3 around the lower die cutter 7. The lower die base 2 has multiple countersunk holes 201 evenly distributed around its bottom circumference. The lower die feed plate 3 has multiple threaded holes corresponding to the countersunk holes 201. The lower die base 2 and the lower die feed plate 3 are connected by countersunk screws 202 passing through the countersunk holes 201 and the threaded holes. The countersunk screws 202 are movably provided with a guide sleeve 4 around the countersunk holes 201. The guide sleeve 4 is slidably connected with the countersunk holes 201 on the lower die base 2. Multiple lower die springs 5 ​​are clamped and installed on one side of the guide sleeve 4 between the lower die base 2 and the lower die feed plate 3.

[0023] After adopting the above technical solution, under the elastic action of the lower die spring 5 and the guidance of the guide sleeve 4, elastic support force can be provided for the lower die feed plate 3, which can effectively prevent the plate from being scratched when cutting the plate.

[0024] The upper mold guide base 1 is internally connected to a slidable cutter bar 13. A locking ring 9 is provided on the top of the upper mold guide base 1 around the cutter bar 13. The locking ring 9 is connected to the upper mold guide base 1 by screws. The cutter bar 13 is slidably connected to the locking ring 9. An open-shaped striking head 11 is provided at the top of the cutter bar 13. A locking screw 12 is provided on the side wall of the striking head 11 at the opening. The striking head 11 is connected to the cutter bar 13 by the locking screw 12. An upper mold spring 10 is provided on the outer periphery of the cutter bar 13 between the striking head 11 and the locking ring 9.

[0025] By adopting the above technical solution, the upper mold spring 10 can provide an elastic support force for the upper mold guide base 1 and the upper rolling cutter 8 under the action of the cutter bar 13, which can protect the roller from being crushed and damaged.

[0026] Among them, an avoidance groove is provided above the lower die feed plate 3 at the lower roller cutter 7.

[0027] The working principle of this utility model is as follows: In use, the upper die base and lower die base 2 are installed on the turret punch press. The turret punch press strike rod presses down the strike head 11, and the upper die assembly contacts the plate between the upper die guide base 1 and the lower die feed plate 3. Then, it continues to press down until the plate is cut through. The machine tool clamp drags the plate along the XY axis to cut the plate according to the programmed pattern. During the cutting process, under the guidance of the countersunk screw 202 and the guide sleeve 4, and the elastic support of the lower die spring 5, the lower die feed plate 3 can be provided with elastic support force. The upper die spring 10 can provide elastic downward pressure for the upper die guide base 1 and the upper roller cutter 8. This structure has springs installed in both the upper and lower dies, which can protect the rollers from being crushed and damaged, and at the same time reduce the risk of scratching the plate. Compared with the conventional 85 series edge cutting die, which requires a step punch and produces many nodes, this structure can achieve completely seamless and wasteless results, reduce the time for manual grinding in the later stage, and has a wide range of applications.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seamless roll cutting die, comprising a lower die base (2) and an upper die guide base (1) disposed above the lower die base (2), characterized in that: An upper rolling cutter (8) is provided below the upper mold guide base (1), and a lower rolling cutter (7) is provided above the lower mold base (2). The upper rolling cutter (8) and the upper mold guide base (1) and the lower rolling cutter (7) and the lower mold base (2) are rotatably connected by a bearing (15). A retaining ring (14) for limiting is provided on the support shaft of the upper rolling cutter (8) and the lower rolling cutter (7). The upper rolling cutter (8) and the lower rolling cutter (7) engage after contact.

2. The seamless rolling die according to claim 1, characterized in that: The lower die base (2) has a lower die feed plate (3) around the lower die cutter (7). The lower die base (2) has multiple countersunk holes (201) evenly distributed around its bottom circumference. The lower die feed plate (3) has multiple threaded holes corresponding to the countersunk holes (201).

3. The seamless rolling die according to claim 2, characterized in that: The lower mold base (2) and the lower mold feed plate (3) are connected by a countersunk screw (202) passing through a countersunk hole (201) and a threaded hole. A guide sleeve (4) is movably provided around the countersunk screw (202) at the countersunk hole (201). The guide sleeve (4) is slidably connected to the countersunk hole (201) on the lower mold base (2). Multiple lower mold springs (5) are clamped and provided between the lower mold base (2) and the lower mold feed plate (3) on one side of the guide sleeve (4).

4. The seamless rolling die according to claim 1, characterized in that: The upper mold guide base (1) is slidably connected to a cutter bar (13). A locking ring (9) is provided on the top of the upper mold guide base (1) around the cutter bar (13). The locking ring (9) is connected to the upper mold guide base (1) by screws. The cutter bar (13) is slidably connected to the locking ring (9).

5. The seamless rolling die according to claim 4, characterized in that: The top of the cutter bar (13) is provided with an open-shaped striking head (11). A locking screw (12) is provided on the side wall of the striking head (11) at the opening. The striking head (11) is connected to the cutter bar (13) by the locking screw (12). An upper mold spring (10) is provided on the periphery of the cutter bar (13) between the striking head (11) and the locking ring (9).

6. The seamless rolling die according to claim 2, characterized in that: An avoidance groove is provided above the lower die feed plate (3) at the lower roller cutter (7).

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