Thin material blanking die

Abstract

The utility model relates to a kind of thin material blanking die, it is composed of upper die set and lower die set, the upper die set is composed of upper die holder, upper backing plate, upper clamping plate, stop plate and upper stripper plate;The stop plate can be up and down movable connection in the bottom of upper clamping plate;Upper clamping plate, stop plate and upper stripper plate are provided with the punch hole that is connected and downwardly penetrates the bottom of upper stripper plate, punch hole is provided with punch, the top of punch and upper clamping plate are fixedly connected together;The lower die set is composed of lower die holder, lower backing plate and lower die plate;Lower die plate and upper stripper plate correspond to up and down, knife edge insert is embedded in lower die plate, and the knife edge of knife edge insert corresponds to punch up and down. This kind of thin material blanking die structure is simple, and it is strong in universality, simple to operate, and the burrs after thin material blanking are few, and the waste material of blanking can be limited by stop convex, prevent material band to jump waste material and dust, ensure the smooth of feeding, it is convenient to continuous blanking processing, improve processing efficiency and product quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to sheet metal blanking processing especially relates to a thin material blanking die. BACKGROUND

[0002] The metal sheet material belt is prone to jumping scrap during blanking processing due to the toughness of the sheet material, and the scrap is brought out by the punch, which causes the blanking die to feed smoothly, and cannot stably produce continuously, thereby affecting the production efficiency of the product.

[0003] In order to avoid the phenomenon of jumping scrap of the thin material belt in the blanking process, the following two ways are usually adopted to make the blanking scrap fall smoothly through the scrap hole. One is to open a blow hole in the axial direction of the punch, and connect a gas pipe to the punch. When blanking, air can be supplied to the blow hole of the punch, so that the scrap falling down receives downward pressure, preventing the scrap from jumping out of the cutting edge. However, this way of avoiding jumping scrap is suitable for larger size punch of die, and the structure of small punch is difficult to process, which also affects the strength of the punch. Another way is to connect an air suction pipeline in the scrap hole of the lower die set to generate negative pressure in the scrap hole, so as to have downward adsorption force, which facilitates the scrap after blanking to be sucked into the scrap hole. However, this way causes the scrap produced during blanking to be easily sucked into the air suction device, causing damage to the device. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a thin material blanking die capable of effectively preventing jumping scrap.

[0005] In order to solve the above technical problem, the utility model is realized by the following technical scheme:

[0006] A thin material blanking die is composed of an upper die set and a lower die set corresponding to each other, the upper die set is composed of an upper die seat, an upper backing plate, an upper clamping plate, a stop plate and an upper stripper plate, the upper backing plate is fixedly arranged at the bottom of the upper die seat, the upper clamping plate is fixedly arranged at the bottom of the upper backing plate, the stop plate is movably connected to the bottom of the upper clamping plate, and the upper stripper plate is fixedly connected to the bottom of the stop plate, the upper clamping plate, the stop plate and the upper stripper plate are provided with a punch hole communicating upward and downward and penetrating through the bottom of the upper stripper plate, the punch hole is provided with a punch, the top of the punch is fixedly connected with the upper clamping plate, and the punch is in clearance fit with the punch hole, the lower die set is composed of a lower die seat, a lower backing plate and a lower die plate, the lower backing plate is fixedly arranged at the top of the lower die seat, and the lower die plate is fixedly arranged at the top of the lower backing plate, the lower die plate corresponds to the upper stripper plate upward and downward, the lower die plate is embedded with a cutting edge insert, the top surface of the cutting edge insert is flush with the top surface of the lower die plate, the cutting edge of the cutting edge insert corresponds to the punch upward and downward, and the punch can be inserted into the cutting edge downward.

[0007] Further, the bottom of the upper die seat is fixed with a vertically arranged spring, which penetrates through the upper backing plate and the upper clamping plate and corresponds to the top surface of the stop plate.

[0008] Further, the upper clamping plate is provided with a lifting hole communicating with the bottom of the upper clamping plate, the lifting hole is a stepped hole, and an equal-height screw is arranged in the lifting hole, the lower end of the equal-height screw is threadedly connected with the top of the stop plate through the lifting hole.

[0009] Further, the lower die plate is provided with an embedding groove, and the knife edge insert is embedded in the embedding groove; and the embedding groove is provided with a waste hole penetrating through the lower die plate, the lower backing plate and the bottom of the lower die seat.

[0010] Further, the embedding groove is provided with a connecting protrusion protruding towards the center thereof at a position close to the bottom of the embedding groove, the connecting protrusion is integrated with the lower die plate, the lower die plate is provided with an air inlet hole, one end of the air inlet hole penetrates through the side surface of the lower die plate, the end of the air inlet hole located on the outer side surface of the lower die plate is provided with an air pipe quick connector, the other end of the air inlet hole opposite to the air pipe quick connector penetrates through the top of the connecting protrusion, and the end of the other end of the air inlet hole opposite to the air pipe quick connector is provided with an air nozzle fixedly connected thereto; the knife edge insert is provided with a recessed clamping groove at a position close to the bottom of the outer side of the knife edge insert, the clamping groove is in upper and lower plug-in cooperation with the connecting protrusion, the bottom of the clamping groove is provided with a sleeve hole in sleeve cooperation with the air nozzle, the knife edge insert is provided with an air outlet at a position close to the upper end of the blanking hole, the air outlet communicates with the blanking hole, and the air outlet and the sleeve hole are in communication through an air connection hole.

[0011] Further, the bottom of the knife edge of the knife edge insert is provided with a blanking hole penetrating through the bottom surface of the knife edge insert, and the blanking hole is coaxial with the knife edge.

[0012] Further, the thickness h between the inner wall surface of the stop protrusion and the inner wall surface of the knife edge is 0.01 mm.

[0013] Further, the inclination angle of the knife edge is 7.

[0014] Compared with the prior art, the thin material blanking die has the advantages that: the thin material blanking die has simple structure, can be assembled with knife edge inserts of different specifications, is suitable for different blanking processing sizes of thin materials, has high universality, is easy to operate, has less burrs after thin material blanking, and can limit the waste material through the stop protrusion, prevent the material belt from jumping the waste material and the dust, ensure smooth feeding, facilitate continuous blanking processing, and improve the processing efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. 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. Other related drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0016] Figure 1 is a structure sectional view of the die opening state of the thin material blanking die of the present application;

[0017] Figure 2 is a structure sectional view of the die closing state of the thin material blanking die of the present application;

[0018] Figure 3 is Figure 2 is a structure enlarged view of A in the middle;

[0019] Figure 4 is Figure 2 is a structure enlarged view of B in the middle.

[0020] In the figure: 1, lower die set; 11, upper die seat; 12, upper backing plate; 13, upper clamping plate; 131, hoisting hole; 14, stop plate; 15, upper stripper plate; 16, spring; 17, equal height screw; 18, punching hole; 2, lower die set; 21, lower die seat; 22, lower backing plate; 23, lower die plate; 230, embedding groove; 231, air inlet hole; 232, air pipe quick connector; 233, connection protrusion; 234, air nozzle; 24, waste hole; 3, punch; 4, knife edge insert; 41, knife edge; 42, stop protrusion; 43, blanking hole; 44, clamping groove; 441, sleeving hole; 442, air connection hole; 443, air outlet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents the selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the application, it should be explained that: if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the application when it is usually placed, which is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the terms "horizontal", "vertical" and the like appear, it does not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0024] In the description of the embodiments of the application, "a plurality of" represents at least 2.

[0025] In the description of the embodiments of the application, it should also be explained that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0026] Embodiment

[0027] Please refer to the drawings of the specification Figure 1 and 2 , the drawings of the specification Figure 1 and 2The embodiment discloses a thin material blanking die, which is used for blanking processing of 0.1mm copper sheet and is composed of an upper die set 1 and a lower die set 2 corresponding to each other, the upper die set 1 is composed of an upper die holder 11, an upper cushion plate 12, an upper clamping plate 13, a stop plate 14 and an upper stripper plate 15, the upper cushion plate 12 is fixedly connected to the bottom of the upper die holder 11 through bolts, the upper clamping plate 13 is fixedly connected to the bottom of the upper cushion plate 12 through bolts, and the stop plate 14 is movably connected to the bottom of the upper clamping plate 13, the upper clamping plate 13 is provided with a lifting hole 131 communicating with the bottom of the upper clamping plate 13, the lifting hole 131 is a stepped hole, an equal-height screw 17 is arranged in the lifting hole 131, the lower end of the equal-height screw 17 is threadedly connected to the top of the stop plate 14 through the lower end of the lifting hole 131, the equal-height screw 17 can hang the stop plate 14 in cooperation with the lifting hole 131, the upper die holder 11 is fixedly provided with a spring 16 arranged vertically at the bottom of the upper die holder 11, the spring 16 penetrates through the upper cushion plate 12 and the upper clamping plate 13 downwards and corresponds to the top surface of the stop plate 14, the upper stripper plate 15 is fixedly connected to the bottom of the stop plate 14 through bolts and moves synchronously upwards and downwards with the stop plate 14, the upper clamping plate 13, the stop plate 14 and the upper stripper plate 15 are provided with a punching hole 18 communicating upwards and downwards and penetrating through the bottom of the upper stripper plate 15 downwards, a punch 3 is arranged in the punching hole 18, the top of the punch 3 is fixedly connected to the upper clamping plate 13, the punch 3 is in clearance fit with the punching hole 18 and can move synchronously upwards and downwards with the upper clamping plate 13, it is to be explained that, in the die opening state, the lower end of the punch 3 is located in the punching hole 18, in the die closing state, the punch 3 can extend downwards below the bottom of the upper stripper plate 15, the extending distance of the punch 3 downwards is the same as the distance between the top of the stop plate 14 and the bottom of the upper clamping plate 13 in the die opening state, and the upper die set 1 is provided with a lifting mechanism 4. Figure 1 and 2As shown, the lower die set 2 is composed of a lower die seat 21, a lower die cushion 22 and a lower die plate 23; the lower die cushion 22 is fixedly connected on the top of the lower die seat 21 by bolts, and the lower die plate 23 is fixedly connected on the top of the lower die cushion 22 by bolts, the lower die plate 23 corresponds to the upper stripper plate 15 in up and down direction, and a knife edge insert 4 is embedded in the lower die plate 23, the top surface of the knife edge insert 4 is flush with the top surface of the lower die plate 23, and the knife edge 41 of the knife edge insert 4 corresponds to the punch 3 in up and down direction; in order to facilitate the installation of the knife edge insert 4 on the lower die plate 23, an embedding groove 230 is arranged on the lower die plate 23, the knife edge insert 4 is embedded in the embedding groove 230, and different specifications of the knife edge insert 4 can be assembled in the embedding groove 230, which is suitable for different punching processing sizes of thin materials; in order to facilitate the falling of the waste material, a waste hole 24 is arranged at the bottom of the embedding groove 230, which penetrates through the lower die plate 23, the lower die cushion 22 and the bottom of the lower die seat 21; the inclination angle of the knife edge 41 is 7, which ensures the cutting effect and reduces the occurrence of punching burrs, and the punch 3 can be inserted into the knife edge 41; referring to the accompanying drawings Figure 3 As shown, the knife edge 41 of the knife edge insert 4 is provided with a blanking hole 43 penetrating through the bottom surface of the knife edge insert 4 in downward direction, the blanking hole 43 is coaxial with the knife edge 41 in up and down direction, the diameter of the blanking hole 43 is larger than that of the knife edge 41, which ensures the smooth falling of the waste material; in order to avoid the waste material being brought out of the knife edge 41 by the punch 3 in upward direction, a stop protrusion 42 is arranged on the inner wall surface of the blanking hole 43 near the top, which protrudes towards the center line of the blanking hole 43; the thickness h between the inner wall surface of the stop protrusion 42 and the inner wall surface of the knife edge 41 is 0.01mm, which does not affect the waste material being pushed into the blanking hole 43 in downward direction, and the punch 3 will push the thin material downward after punching, and the punched waste material will be further pressed downward by the punch 3, and the waste material will pass through the center hole of the stop protrusion 42 under the extrusion of the punch 3; it should be noted that the lower end of the punch 3 is smaller than the center hole of the stop protrusion 42, and the waste material entering the blanking hole 43 below the stop protrusion 42 will not be brought out of the blanking hole 43 by the punch 3, which effectively prevents the upward movement of the waste material.

[0028] In order to enable the waste material pushed into the blanking hole 43 to fall smoothly and further avoid being brought out by the punch 3 in upward direction, referring to the accompanying drawings Figure 4As shown, the inner side near the bottom is provided with a connection protrusion 233 protruding to the center, the connection protrusion 233 is integrated with the lower die plate 23, the center of the connection protrusion 233 is provided with a T-shaped structure, the lower die plate 23 is provided with an air inlet hole 231, one end of the air inlet hole 231 penetrates the side of the lower die plate 23, in order to ventilate the air inlet hole 231, the end of the air inlet hole 231 on the outer side of the lower die plate 23 is provided with an air pipe quick connector 232, the air pipe quick connector 232 can facilitate the quick insertion of the air path; the other end of the air inlet hole 231 relative to the air pipe quick connector 232 penetrates the top of the connection protrusion 233, and the end is provided with an air nozzle 234 fixedly connected thereto; further, the outer side of the knife edge insert 4 near the bottom is provided with an inner recessed clamping groove 44, the clamping groove 44 is inserted and matched with the connection protrusion 233; the bottom of the clamping groove 44 is provided with a sleeve joint hole 441 which is sleeved and matched with the air nozzle 234, the inner side of the knife edge insert 4 near the upper end of the blanking hole 43 is provided with an air outlet 443, the air outlet 443 communicates with the blanking hole 43, the air outlet 443 is a downwardly inclined hole corresponding to the center line of the blanking hole 43, the air outlet 443 corresponds to the bottom of the stop protrusion 42, and the air outlet 443 and the sleeve joint hole 441 are communicated through an air connection hole 442, after the knife edge insert 4 is embedded on the lower die plate 23, the sleeve joint hole 441 is sleeved on the outside of the air nozzle 234, the gas entering the air inlet hole 231 enters the air connection hole 442 through the air nozzle 234 and is discharged from the air outlet 443, the air outlet 443 blows air downwardly against the blanking hole 43 to generate negative pressure in the inside of the knife edge 41 and the bottom of the stop protrusion 42, so that the waste is smoothly sent into the blanking hole 43 and the waste hole 24, it should be noted that the air outlet 443 has multiple groups which are arranged in a circular array with the end surface center of the blanking hole 43 as the center to ensure the downward flow of the gas in the blanking hole 43 and generate a certain negative pressure suction force at the knife edge 41.

[0029] When the mold is closed, as shown in the accompanying drawings Figure 2 As shown, when the upper mold set 1 moves downward, the spring 16 gives the upper stripper plate 15 a downward force to press the thin material on the top of the lower die plate 23, the upper mold set 1 continues to move downward and the punch 3 performs stamping on the thin material, when the upper mold set 1 and the lower mold set 2 are completely closed, the required stamping action is completed, the punch 3 pushes the punched waste downwardly from the knife edge 41 to the blanking hole 43 below the stop protrusion 42, and the waste is blown into the waste hole 24 through the downward air in the blanking hole 43, so that the waste falls down without jumping.

[0030] When the mold is opened, as shown in the accompanying drawings Figure 1 As shown, when the upper mold set 1 moves upward, the spring 16 gradually separates from the stop plate 14 to reduce the pressure on the stop plate 14 and the upper stripper plate 15, at this time, a stamping movement cycle of the mold is completed.

[0031] The thin material blanking die has simple structure, can assemble different specifications of blade edge inserts 4, is suitable for different blanking processing sizes of thin materials, has strong universality, is simple to operate, has less burrs after thin material blanking, and the blanking waste can be limited by the stop protrusion 42 to prevent the material belt from jumping waste and powder, ensure smooth feeding, facilitate continuous blanking processing, and improve processing efficiency and product quality.

[0032] It should be emphasized that the above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A blanking die for thin material, composed of an upper die set (1) and a lower die set (2) corresponding to each other, characterized in that: The upper die set (1) is composed of an upper die base (11), an upper pad plate (12), an upper clamping plate (13), a stop plate (14) and an upper stripper plate (15); the upper pad plate (12) is fixedly arranged at the bottom of the upper die base (11), the upper clamping plate (13) is fixedly arranged at the bottom of the upper pad plate (12), the stop plate (14) is movably connected at the bottom of the upper clamping plate (13), and the upper stripper plate (15) is fixedly connected at the bottom of the stop plate (14); the upper clamping plate (13), the stop plate (14) and the upper stripper plate (15) are provided with a punch hole (18) which is in communication with the upper and lower portions and penetrates through the bottom of the upper stripper plate (15) downwardly, the punch hole (18) is provided with a punch (3), the top of the punch (3) is fixedly connected with the upper clamping plate (13), and the punch (3) is in clearance fit with the punch hole (18); the lower die set (2) is composed of a lower die base (21), a lower pad plate (22) and a lower die plate (23); the lower pad plate (22) is fixedly arranged at the top of the lower die base (21), and the lower die plate (23) is fixedly arranged at the top of the lower pad plate (22); the lower die plate (23) corresponds to the upper stripper plate (15) in the upper and lower directions, the lower die plate (23) is embedded with a knife-edge insert (4), the top surface of the knife-edge insert (4) is flush with the top surface of the lower die plate (23), the knife edge (41) of the knife-edge insert (4) corresponds to the punch (3) in the upper and lower directions, and the punch (3) can be inserted into the knife edge (41) downwardly.

2. A blanking die for thin material according to claim 1, characterized in that: The bottom of the upper die base (11) is fixedly provided with a vertically arranged spring (16), the spring (16) penetrates through the upper pad plate (12) and the upper clamping plate (13) downwardly and corresponds to the top surface of the stop plate (14).

3. A blanking die for thin material according to claim 1, characterized in that: The upper clamping plate (13) is provided with a lifting hole (131) which is in communication with the bottom of the upper clamping plate (13), the lifting hole (131) is a stepped hole, and the lifting hole (131) is provided with an equal-height screw (17), the lower end of the equal-height screw (17) is threadedly connected with the top of the stop plate (14) through the lifting hole (131).

4. A blanking die for thin material as defined in claim 1, characterized in that: The lower die plate (23) is provided with an embedding groove (230), and the knife-edge insert (4) is embedded in the embedding groove (230); the embedding groove (230) is provided with a waste hole (24) which penetrates through the bottom of the lower die plate (23), the lower pad plate (22) and the lower die base (21) downwardly.

5. A blanking die for thin material according to claim 4, characterized in that: The position close to the bottom of the slot (230) is provided with a connection protrusion (233) protruding to the center, the connection protrusion (233) is integrated with the lower mold plate (23), the lower mold plate (23) is provided with an air inlet hole (231), one end of the air inlet hole (231) penetrates the outer side of the lower mold plate (23), the end of the air inlet hole (231) on the outer side of the lower mold plate (23) is provided with an air pipe quick connector (232), the other end of the air inlet hole (231) penetrates the top of the connection protrusion (233), the other end of the air inlet hole (231) is provided with an air nozzle (234) fixedly connected thereto; The position close to the bottom of the outer side of the knife edge insert (4) is provided with a concave clamping groove (44), the clamping groove (44) is inserted into the connection protrusion (233) in an up-down manner; The bottom of the clamping groove (44) is provided with a sleeve hole (441) sleeved with the air nozzle (234) in an up-down manner; The position close to the upper end of the blanking hole (43) in the knife edge insert (4) is provided with an air outlet (443), the air outlet (443) is communicated with the blanking hole (43), and the air outlet (443) and the sleeve hole (441) are communicated with each other through an air connection hole (442).

6. A blanking die for thin stock according to claim 1 wherein: The bottom of the knife edge (41) of the knife edge insert (4) is provided with a blanking hole (43) penetrating the bottom surface of the knife edge insert (4) downward, the blanking hole (43) is coaxial with the knife edge (41) in an up-down manner; The inner wall surface of the blanking hole (43) is provided with a stop protrusion (42) protruding to the center line direction of the blanking hole (43) close to the top.

7. A blanking die for thin material according to claim 6, characterized in that: The thickness h between the inner wall surface of the stop protrusion (42) and the inner wall surface of the knife edge (41) is 0.01mm.

8. A blanking die for thin material according to claim 6, characterized in that: The inclination angle of the knife edge (41) is 7°.

Images