A high-precision continuous die reverse fine hole punching device

Abstract

The application discloses a high-precision continuous die reverse fine punching device, which comprises a lower die seat, a first air joint arranged on the lower die seat, and a first air channel communicated with the first air joint; a punch arranged on the lower die seat, a second air channel arranged through the punch, an inner end of the second air channel communicated with the first air channel, and an outer end of the second air channel extended to a punching end surface of the punch; an upper die seat, a socket corresponding to the punch arranged on the upper die seat, an inner end of the socket butted with a third air channel, one end of a top of the third air channel butted with a second air joint, and the other end of the third air channel butted with a waste discharge port; and a rotary grinding structure used for guiding the waste formed by punching and grinding the punching part of the workpiece through rotation, which is rotationally arranged on the outer end of the socket of the upper die seat. The application can solve the quality defects of burrs and burrs easily formed at the punching part of the workpiece during use of the existing stamping device, and the problems of the influence of the waste jumping on the machining precision and the machining quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping device, in particular to a high-precision reverse fine punching device in a progressive die. BACKGROUND

[0002] In the stamping of sheet metal die, the quality defects of burrs and burrs are often formed at the punching position of the workpiece, and the waste material formed by punching cannot be separated from the workpiece strip in time, which affects the machining precision and quality of the workpiece. SUMMARY

[0003] The purpose of the present application is to solve the problem of burrs and burrs formed at the punching position of the workpiece when the existing stamping device is used, and the waste material affects the machining precision and quality, and to provide a high-precision reverse fine punching device in a progressive die.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme: a high-precision reverse fine punching device in a progressive die, comprising:

[0005] A lower die seat is provided with a first air joint, and the first air joint is communicated with a first air duct;

[0006] A punch is arranged on the lower die seat, a second air duct is arranged through the punch, the inner end of the second air duct is communicated with the first air duct, and the outer end of the second air duct extends to the punching end surface of the punch;

[0007] An upper die seat is provided with a socket corresponding to the punch, the inner end of the socket is connected with a third air duct, one end of the top of the third air duct is connected with a second air joint, and the other end of the third air duct is connected with a waste material discharge port;

[0008] A rotary grinding structure is used for guiding the waste material formed by punching and grinding the punching position of the workpiece by rotating itself, and the rotary grinding structure is arranged at the outer end of the socket of the upper die seat.

[0009] Further description of the above technical scheme:

[0010] The rotary grinding structure comprises a rotary seat, a grinding block and a linkage, the rotary seat is rotatably embedded in the countersunk structure of the outer end of the socket through the convex ribs on the outer surface, the central part is provided with a through hole matched with the socket of the punch, the outer side of the through hole extends a second movable groove, and the grinding block and the linkage are arranged in the second movable groove.

[0011] Further description of the above technical scheme:

[0012] The grinding block is elastically connected in the second movable groove through a first connecting shaft and a torsional spring, and the inner side is provided with a right-angle grinding surface.

[0013] As a further description of the above technical solutions:

[0014] The first connecting shaft is eccentrically arranged on the circular grinding block.

[0015] As a further description of the above technical solutions:

[0016] The linkage is in a V-shaped structure, and a middle part thereof is elastically rotationally connected in the second movable slot through a second connecting shaft and a torsional spring.

[0017] As a further description of the above technical solutions:

[0018] One end of the linkage is provided with an abutting block corresponding to the punch, and a wedge-shaped windward surface is arranged at a bottom of the abutting block.

[0019] As a further description of the above technical solutions:

[0020] The other end of the linkage is provided with an elastic rod, an outer end of the elastic rod is connected to a ball shaft, and the ball shaft is rotationally connected in a spherical groove on a surface of the grinding block.

[0021] As a further description of the above technical solutions:

[0022] A guide structure in the form of a turbine is rotationally arranged at a top of the third air channel, and guide vanes are helically arranged on a surface of the turbine.

[0023] As a further description of the above technical solutions:

[0024] A second magnet is arranged on the guide structure, a magnetic pole of the second magnet is directed to be parallel to the rotating grinding structure, and at least one first magnet is arranged on the rotating grinding structure.

[0025] As a further description of the above technical solutions:

[0026] A first movable slot is further arranged on the lower die holder, a material ejection pin is slidingly arranged at a top of the first movable slot, a material ejection ejector is elastically connected to a bottom of the material ejection pin, and the punch is arranged on the material ejection ejector.

[0027] As described above, due to the adoption of the above technical solutions, the present application has the following beneficial effects compared with the prior art:

[0028] 1. The punching device can realize rapid blowing of waste materials away from the workpiece after punching of the workpiece, avoid the problem of material jumping, and ensure the machining precision by passing the compressed gas into the upper and lower die holders.

[0029] 2、After the punch enters the through hole, it will lift one end of the linkage upward, causing it to rotate, and in turn drive the grinding block to rotate, causing the right-angle grinding surface to protrude above the lower surface of the upper die holder. When the rotating grinding structure is rotated by the action of the airflow, the right-angle grinding surface can grind and process the defects of the punched hole of the workpiece.

[0030] 3、When the waste produced by punching is pushed into the socket by the punch and blown up by the airflow, the abutment block can block part of the waste and, under the action of the wedge-shaped windward surface, cause it to overturn from a lying state to a standing state and fully contact the airflow of the third air duct, ensuring the efficiency of waste discharge; the wedge-shaped windward surface will rotate along the axis of the rotating grinding structure under the action of the vertical airflow of the second air duct, thereby achieving stable rotational drive of the rotating grinding structure; when the airflow in the third air duct is pumped in, the flow guide structure rotates, causing the magnetic pole direction of the second magnet to change, and the first magnet is magnetically associated with it, thereby synchronously driving the rotating grinding structure to rotate, to further improve the grinding effect of the punched hole of the workpiece and ensure the processing precision and quality. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1 It is a structure schematic diagram of a high-precision continuous reverse fine punching device in a die when the die is opened.

[0033] Figure 2 It is a structure schematic diagram of a punch in a high-precision continuous reverse fine punching device.

[0034] Figure 3 It is a partial structure schematic diagram of an upper die holder in a high-precision continuous reverse fine punching device.

[0035] Figure 4 It is a use state diagram of a rotating grinding structure in a high-precision continuous reverse fine punching device when the die is closed.

[0036] Figure 5 It is a structure schematic diagram of a rotating grinding structure in a high-precision continuous reverse fine punching device.

[0037] Figure 6 It is a structure schematic diagram of a high-precision continuous reverse fine punching device when the die is closed.

[0038] LEGEND EXPLANATION:

[0039] 1. Lower die base; 11. First air connector; 12. First air passage; 13. First movable groove; 2. Punch; 21. Second air passage; 3. Upper die base; 31. Socket; 32. Third air passage; 33. Second air connector; 34. Scrap outlet; 4. Rotary grinding structure; 41. Rotating seat; 411. Through hole; 412. Second movable groove; 42. Grinding block; 421. First connecting shaft; 422. Right angle grinding surface; 423. Spherical groove; 43. Linkage component; 431. Second connecting shaft; 432. Abutment block; 433. Elastic rod; 434. Ball shaft; 44. First magnet; 5. Flow guiding structure; 51. Flow guiding blade; 52. Second magnet; 6. Stripper; 7. Stripper pin. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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, they should not be construed as limiting the present invention.

[0044] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "arrange", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of 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.

[0045] Embodiment one:

[0046] Please refer to Figures 1-6 The present application provides a technical solution: a high-precision continuous die reverse fine hole punching device, comprising:

[0047] The lower die seat 1 is provided with a first air joint 11, and the first air joint 11 is communicated with a first air duct 12;

[0048] The punch 2 is arranged on the lower die seat 1, and a second air duct 21 is arranged through the punch 2, the inner end of the second air duct 21 is communicated with the first air duct 12, and the outer end extends to the punching end surface of the punch 2;

[0049] The upper die seat 3 is provided with a socket 31 corresponding to the punch 2, the inner end of the socket 31 is connected with a third air duct 32, one end of the top of the third air duct 32 is connected with a second air joint 33, and the other end is connected with a waste discharge port 34;

[0050] The rotating grinding structure 4 is used for guiding the waste generated by punching and grinding the punching part of the workpiece by rotating itself, and is arranged on the outer end of the socket 31 of the upper die seat 3.

[0051] The hole punching device of the present application can realize that the waste is quickly blown away from the workpiece after the workpiece is punched, avoid the problem of jumping material, and ensure the machining precision; after punching, the rotating grinding structure can be rotated under the action of air flow to grind the punching part of the workpiece, remove the surface burr and burr defects, and further ensure the machining precision, realize the high-precision fine punching machining of the workpiece.

[0052] The rotating grinding structure 4 includes a rotating seat 41, a grinding block 42 and a linkage 43, the rotating seat 41 is rotatably embedded in the countersunk structure of the outer end of the socket 31 through the convex ribs on the outer surface, a through hole 411 is arranged in the center of the rotating seat 41 and connected with the socket of the punch 2, a second movable groove 412 is arranged on the outer side of the through hole 411, and the grinding block 42 and the linkage 43 are arranged in the second movable groove 412.

[0053] The grinding block 42 is elastically rotationally connected in the second movable groove 412 by the first connecting shaft 421 and the torsion spring, and the inner side is provided with a right-angle grinding surface 422. The first connecting shaft 421 is eccentrically arranged on the circular grinding block 42. Thus, when the workpiece is punched, the grinding block 42 stably supports the top surface of the workpiece, and after punching, the grinding block 42 rotates, so that the right-angle grinding surface 422 protrudes from the lower surface of the upper die holder 3 to grind and secondarily process the workpiece.

[0054] The linkage 43 is in a V-shaped structure, and the middle part is elastically rotationally connected in the second movable groove 412 by the second connecting shaft 431 and the torsion spring. One end of the linkage 43 is provided with an elastic rod 433, the outer end of the elastic rod 433 is butted against a ball shaft 434, and the ball shaft 434 is rotationally connected in a spherical groove 423 on the surface of the grinding block 42. The linkage 43 is designed based on the principle of a lever, so that when the punch 2 abuts against one end, the other end is synchronously raised, and drives the grinding block 42 to rotate, so that the right-angle grinding surface 422 protrudes from the lower surface of the upper die holder 3, and during this period, the elastic rod 433 is deformed to ensure that the structure does not interfere and stably correlates with the movement.

[0055] The lower die holder 1 is further provided with a first movable groove 13, the top of the first movable groove 13 is slidably provided with a stripping pin 6, the stripping ejector pin 6 is elastically butted against a stripping ejector pin 7 at the bottom, and the punch 2 is arranged on the stripping ejector pin 6, so as to stably support the end surface of the workpiece material belt during punching, further improve the processing precision, and realize the ejection of the workpiece and the convenient and rapid demolding when the mold is opened.

[0056] The working principle of the high-precision continuous die reverse fine punching device of the embodiment includes: when the mold is closed, the stripping pin 6 is pressed into the first movable groove 13 by the upper die holder 3 and the workpiece material belt, during which the stripping ejector pin 7 elastically tights the stripping ejector pin 6, the punch 2 is exposed, and the workpiece material belt is punched; after punching, the external gas supply system pumps compressed air into the first gas channel 12 and the third gas channel 32, so that part of the airflow is punched out from the punching end of the punch by the top of the second gas channel 21, the waste generated by punching is upwardly lifted, is impacted by the airflow formed by the third gas channel 32 in another direction, and is discharged from the waste discharge port 34 of the device, so as to avoid the problem of material jumping; after the punch 2 enters the through hole 411, one end of the linkage 43 is upwardly lifted, so as to rotate, and further drives the grinding block 42 to rotate, so that the right-angle grinding surface 422 protrudes from the lower surface of the upper die holder 3; when the rotating grinding structure 4 is rotated under the action of the airflow, the right-angle grinding surface 422 can grind and process the punching part of the workpiece.

[0057] Embodiment two:

[0058] Please refer to Figure 3 , 4On the basis of the above embodiment one, preferably, the other end of the linkage 43 is provided with an abutting block 432 corresponding to the punch 2, and the bottom of the abutting block 432 is provided with a wedge windward surface.

[0059] The working principle of the high-precision reverse fine punching hole device in the continuous die of the embodiment includes: when the waste produced by punching is pushed into the socket 31 by the punch 2 and blown up by the airflow, the abutting block 432 can block part of the waste, and under the action of the wedge windward surface, it is turned over from the flat state to the vertical state, and fully contacts with the airflow of the third air duct 32, ensuring the waste discharge efficiency; the wedge windward surface is rotated along the axis of the rotary grinding structure 4 under the action of the vertical airflow of the second air duct 21, thereby realizing the stable rotary drive of the rotary grinding structure 4.

[0060] Embodiment three:

[0061] Please refer to Figure 3 On the basis of the above embodiment one, preferably, the top of the third air duct 32 is further provided with a flow guide structure 5, which is a turbine, and the surface of the turbine is spirally provided with flow guide vanes 51, thereby further improving the stability of the airflow in the third air duct 32, and further ensuring the discharge efficiency of the waste therein.

[0062] Embodiment four:

[0063] Please refer to Figure 3 、 5 On the basis of the above embodiment three, preferably, the flow guide structure 5 is provided with a second magnet 52, and the magnetic pole of the second magnet 52 is parallel to the rotary grinding structure 4, and the rotary grinding structure 4 is provided with at least one first magnet 44.

[0064] The working principle of the high-precision reverse fine punching hole device in the continuous die of the embodiment includes: when the airflow in the third air duct 32 is pumped in, the flow guide structure 5 rotates, so that the magnetic pole direction of the second magnet 52 changes, and the first magnet 44 is magnetically associated with it, thereby synchronously driving the rotary grinding structure 4 to rotate, to further improve the grinding effect of the workpiece punching hole and ensure the machining precision quality.

[0065] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-precision progressive die reverse fine hole punching device, characterized in that, The utility model relates to a punch and die structure, including: Lower die seat, first air joint is arranged on it, first air channel is communicated with first air joint; Punch is arranged on lower die seat, second air channel is arranged in it, the inner end of second air channel is communicated with first air channel, and the outer end extends to the punch hole end surface of punch; Upper die seat, socket is arranged on it and corresponds with punch, the inner end of socket is connected with third air channel, one end of the top of third air channel is connected with second air joint, and the other end is connected with waste material discharge port; Rotary grinding structure is used to guide the waste material formed by punch hole and grind the punch hole of workpiece through the rotation of itself, and the outer end of rotary grinding structure is arranged in socket; Rotary grinding structure includes rotary seat, grinding block and linkage, rotary seat is rotatably embedded in countersunk structure of the outer end of socket through the convex rib of outer surface, the central part is provided with through hole and corresponds with punch socket, the outer side of through hole extends second movable groove, grinding block and linkage are arranged in second movable groove; Grinding block is rotatably connected in second movable groove through first connecting shaft and torsional spring, and the inner side is provided with right-angle grinding surface; One end of linkage is provided with abutting block and corresponds with punch, and the bottom of abutting block is provided with wedge windward surface; The other end of linkage is provided with elastic rod, the outer end of elastic rod is connected with ball shaft, and ball shaft is rotatably connected in the spherical groove of grinding block surface.

2. The apparatus according to claim 1, wherein, First connecting shaft is eccentrically arranged on circular grinding block.

3. The apparatus according to claim 1, wherein, Linkage is V-shaped structure, and the middle part is rotatably connected in second movable groove through second connecting shaft and torsional spring.

4. The apparatus according to claim 1, wherein, The top of third air channel is also rotatably provided with guide structure, and the guide structure is turbine, and the surface of turbine is spirally provided with guide vane.

5. A high-precision progressive die inner reverse fine blanking hole device according to claim 4, characterized in that, Second magnet is arranged on guide structure, the magnetic pole of second magnet is towards parallel with rotary grinding structure, at least one first magnet is arranged on rotary grinding structure, when the airflow in third air channel is pumped, guide structure rotates, so that the direction of the magnetic pole of second magnet changes, the first magnet and second magnet magnetically associate, and then synchronously drive rotary grinding structure to rotate.

6. The apparatus according to claim 1, wherein, First movable groove is also arranged on lower die seat, the top of first movable groove is slidably provided with ejection pin, the ejection ejector pin of the bottom of ejection pin is elastically connected with ejection pin, and punch is arranged on ejection pin.

Images