Universal forming die

Abstract

The utility model relates to a universal forming die which comprises an upper die base, a lower supporting plate and a lower die plate, the upper die base corresponds to the lower die plate in an up-down mode, the lower die plate is fixedly arranged on the lower supporting plate through a raising block, and an upper male die is arranged in the center of the bottom of the upper die base. A spring seat is arranged in the center of the top of the lower supporting plate; a female die frame is arranged at the top of the base plate, a female die insert is embedded in the female die frame, a cavity is formed in the top of the female die insert, a lifting groove is formed in the center of the cavity, and a vertically-through limiting groove is formed in the center of the bottom of the female die frame. Pressing plates in up-down sliding fit with the lifting grooves and the limiting grooves are arranged in the lifting grooves and the limiting grooves. The universal forming die is simple in structure, the upper male die and the female die insert can be flexibly replaced according to the size and shape requirements of products, the die frame is high in universality, the research, development and use cost of the die is saved, and the machining cost is saved; and in addition, the stamping part can be well demoulded through the pressing plate capable of moving up and down, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a punch forming die, especially to a universal forming die. BACKGROUND

[0002] The punch forming die is a part of semi-finished product or finished product processed by metal or non-metal material in cold punching processing, and its processing mode is to separate or plastically deform the material by using the die installed on the press machine to apply pressure on the material at room temperature, so as to obtain the required part.

[0003] The existing punch forming die has many forms, such as blanking die, bending die, forming die, etc. The forming die is widely used as a product forming processing die, and its processing mode is to directly copy the shape of the protruding die and the concave die to form the blank or semi-finished workpiece, and only the material itself produces local plastic deformation, such as bulging die, necking die, flaring die, undulating forming die, flanging die, and shaping die, etc.

[0004] However, the protruding die on the upper die and the concave die on the lower die of the existing forming die cannot be replaced, and different shapes and sizes of products need corresponding dies, so the protruding die and the concave die cannot be directly replaced, the main structure of the die is not universal, and the development and use cost of the die is increased. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a universal forming die which can conveniently replace the protruding die and the concave die according to the product size requirements.

[0006] In order to solve the above technical problem, the utility model is realized by the following technical scheme:

[0007] The utility model provides a universal forming die, including upper die holder, lower bolster plate and lower die plate, upper die holder and lower die plate correspond, lower die plate is fixedly arranged on lower bolster plate through the pad high block, the bottom center of upper die holder is provided with the upper male die fixedly connected with it, the top center of lower bolster plate is provided with the spring seat fixedly connected with it, the top of spring seat is pasted with the bottom of lower die plate, nitrogen gas spring and the equal height bolt that can go up and down are provided in spring seat, the top of lower die plate is provided with the pad fixedly connected with it, the elastic end of nitrogen gas spring is up -through lower die plate and pad, the threaded end of equal height bolt is up -through lower die plate and pad, the top of pad is provided with the female die frame fixedly connected with it, the female die frame is inlayed with the female die insert fixedly connected with it, the top of female die insert is provided with cavity, the cavity corresponds with the lower end of upper male die and goes up and down and the male die lower end and the cavity top of female die insert go up and down and insert type cooperation, the cavity center of female die insert is provided with the lift groove that goes up and down, the bottom center of female die frame is provided with the limit slot that goes up and down, the limit slot corresponds with the lift groove and goes up and down and intercommunication, the pressure plate that goes up and down slidingly cooperates with it is provided in the lift groove and limit slot, the bottom surface of pressure plate is in contact with the elastic end of nitrogen gas spring top, and the threaded end of equal height bolt upper end is fixedly connected together with pressure plate bottom.

[0008] Further, the female die frame is provided with an open-topped embedding slot in the center, and the female die insert is embedded in the embedding slot.

[0009] Further, the female die frame is provided with a longitudinal limiting block near the center of each of the front and rear sides on the top, and the two longitudinal limiting blocks are used to limit the longitudinal positions of the front and rear sides of the upper male die.

[0010] Further, the bottom of the pressure plate has a vertically arranged inner guide column, the lower die plate, spring seat and lower bolster plate are provided with a vertically extending guide hole, the guide hole corresponds with the position of the inner guide column and the inner guide column is inserted and slidingly fitted in the guide hole.

[0011] Further, the bottom of the upper die holder is provided with a guide sleeve, the upper die holder is provided with a vertically extending transition hole corresponding to the center hole of the guide sleeve, and the center hole of the guide sleeve is provided with an outer guide column slidingly fitted therein, and the lower end of the outer guide column is fixedly connected to the top of the lower die plate.

[0012] Further, the bottom of the upper die holder is provided with an upper limiting column, and the top of the lower die plate is provided with a lower limiting column corresponding to the upper limiting column.

[0013] Compared with the prior art, the universal forming die has the advantages that the structure is simple, the upper punch and the die insert can be replaced flexibly according to the size and shape requirements of products, the die frame has high universality, the development and use cost of the die is saved, and the processing cost is saved; and the demolding of the stamped parts can be well realized through the upper and lower movable pressing plate, and the processing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and 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 to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0015] Figure 1 is a three-dimensional structure schematic view of a universal forming die of the present application;

[0016] Figure 2 is a top view structure schematic view of a universal forming die of the present application;

[0017] Figure 3 is Figure 2 structure sectional view of A-A in the figure;

[0018] Figure 4 is Figure 2 structure sectional view of B-B in the figure.

[0019] In the figure: 1, upper die seat; 11, upper limiting column; 12, upper guide sleeve; 2, lower supporting plate; 21, heightening block; 22, spring seat; 221, nitrogen gas spring; 23, equal-height bolt; 3, lower die plate; 31, lower limiting column; 32, outer guide column; 4, die frame; 41, longitudinal limiting block; 42, embedding groove; 43, limiting groove; 5, backing plate; 6, upper punch; 7, die insert; 71, lifting groove; 8, pressing plate; 81, inner guide column; 82, guide hole. DETAILED DESCRIPTION

[0020] 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, and 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.

[0021] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents 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 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 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 does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on 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.

[0022] 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 more horizontal relative to "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0023] In the description of the embodiments of the application, "a plurality of" represents at least 2.

[0024] In the description of the embodiments of the application, it should be further 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.

[0025] Embodiments

[0026] Please refer to the drawings provided in the description Figures 1 to 4 provided in the description Figures 1 to 4The utility model relates to a general forming die for the forming machining of concave parts, which is suitable for machining of the product outer edge or hole edge that needs to be turned into a vertical edge along a certain curve. The general forming die comprises an upper die holder 1, a lower supporting plate 2 and a lower die plate 3. The upper die holder 1 is fixedly installed at the bottom of the upper cushion plate of a press machine by bolts and can move up and down with the upper cushion plate. The lower supporting plate 2 is fixedly installed on the lower cushion plate of the press machine by bolts. The upper die holder 1 and the lower die plate 3 correspond to each other. The lower die plate 3 is fixedly arranged on the lower supporting plate 2 by a heightening block 21. The heightening block 21 has two blocks and is symmetrically arranged at the bottom of the lower die plate 3 near the left and right sides. An upper punch 6 is fixedly connected to the center of the bottom of the upper die holder 1. The punch 6 is fixedly connected to the bottom of the upper die holder 1 by bolts, which is convenient for disassembly and replacement. In order to ensure the accuracy of the installation position of the punch 6 at the bottom of the upper die holder 1, a centering groove is arranged at the center of the bottom of the upper die holder 1, and a centering block 13 is arranged in the centering groove. The centering block 13 is fixedly connected to the bottom of the upper die holder 1 by bolts, and the lower end of the centering block 13 protrudes below the bottom of the upper die holder 1. A limiting groove is arranged at the center of the top of the upper punch 6 and embeddedly matched with the centering block 13. The upper punch 6 is installed at the bottom of the upper die holder 1 through the limiting groove at the top of the upper punch 6 matched with the centering block 13, so as to ensure the accuracy of the installation position of the upper punch 6 at the bottom of the upper die holder 1. Figure 1 and 3 As shown in the description, a guide sleeve 12 is arranged at the bottom of the upper die holder 1. A transition hole that communicates with the upper and lower parts is arranged at the position corresponding to the center hole of the guide sleeve 12 on the upper die holder 1, and the center diameter of the transition hole matches the center diameter of the guide sleeve 12. An outer guide column 32 that slidably matches the upper and lower parts of the guide sleeve 12 is arranged in the center hole of the guide sleeve 12. The lower end of the outer guide column 32 is fixedly connected to the top of the lower die plate 3. The transition hole can ensure that the outer guide column 22 can pass through the upper die holder 1, so as to avoid interference between the outer guide column 22 and the upper die holder 1 during die closing. The guide sleeve 12 and the outer guide column 32 at least have two groups of corresponding parts that are symmetrically arranged at the positions near the left and right sides between the upper die holder 1 and the lower die plate 3. Figure 1As shown, the upper die seat 1 bottom near the corner part is provided with an upper limiting column 11, the lower die plate 3 top is provided with a lower limiting column 31 corresponding to the upper limiting column 11, when the mold is closed, the upper limiting column 11 and the lower limiting column 31 are in contact vertically, which can limit the mold closing position of the upper die and the lower die, and ensure the safety when the mold is closed, the upper limiting column 11 and the lower limiting column 31 have at least two groups; the lower bolster plate 2 top center is provided with a spring seat 22 fixedly connected therewith, the top of the spring seat 22 is in close contact with the bottom of the lower die plate 3, and the spring seat 22 is fixed on the lower bolster plate 2 through bolts, the spring seat 22 is provided with a nitrogen gas spring 221 and an equal height bolt 23 capable of moving up and down, the spring seat 22 is provided with a spring hole for facilitating the installation of the nitrogen gas spring 221, the spring hole is located at the center of the spring seat 22, the nitrogen gas spring 221 is embedded in the spring hole, and the elastic end thereof is vertically upward; and the spring seat 22 is further provided with an equal height hole for facilitating the penetration of the equal height bolt 23, the equal height hole can limit the height of the equal height bolt 23, the threaded end of the equal height bolt 23 is upward, and the equal height bolt 23 can move up and down in the equal height hole; the equal height bolt 23 has at least two, which are symmetrically arranged on the left and right sides of the nitrogen gas spring 221; the top of the lower die plate 3 is provided with a base plate 5 fixedly connected therewith, and the base plate 5 and the lower die plate 3 are fixedly connected together through bolts, the elastic end of the nitrogen gas spring 221 penetrates the lower die plate 3 and the base plate 5 upward, and the elastic end of the nitrogen gas spring 221 can elastically move up and down relative to the lower die plate 3 and the base plate 5, the threaded end of the equal height bolt 23 penetrates the lower die plate 3 and the base plate 5 upward, and the equal height bolt 23 can move up and down relative to the base plate 5 and the lower die plate 3; the top of the base plate 5 is provided with a concave die frame 4 fixedly connected therewith, and the concave die frame 4 is fixedly connected to the base plate 5 through bolts, which is convenient to disassemble and assemble, the concave die frame 4 is embedded with a concave die insert 7 fixedly connected therewith, and the concave die insert 7 is fixedly connected to the concave die frame 4 through bolts, which is convenient to disassemble and assemble, in order to facilitate the installation of the concave die insert 7 in the concave die frame 4, the center of the concave die frame 4 is provided with an embedded groove 42 with an open top, the concave die insert 7 is embedded in the embedded groove 42, and the concave die insert 7 is horizontally limited by the embedded groove 42, the top of the concave die insert 7 is provided with a cavity, the cavity corresponds to the lower end of the upper punch 6 upward and downward, and the lower end of the punch 6 is embeddedly matched with the cavity at the top of the concave die insert 7 upward and downward, which is used for forming processing of stamping parts, the periphery of the cavity is a vertical surface, which is convenient for flanging, in order to facilitate product demolding, the cavity of the concave die insert 7 is provided with a lifting groove 71 communicating upward and downward in the center, the bottom center of the concave die frame 4 is provided with a limiting groove 43 communicating upward and downward, the limiting groove 43 corresponds to the lifting groove 71 upward and downward and communicates with each other, and the outer peripheral contour structure of the lifting groove 71 and the limiting groove 43 is consistent;The lifting groove 71 and the limiting groove 43 are provided with a pressing plate 8 which is slidably matched with the lifting groove 71 and the limiting groove 43, the bottom surface of the pressing plate 8 is in contact with the elastic end of the top of the nitrogen spring 221, the threaded end of the upper end of the equal-height bolt 23 is fixedly connected with the bottom of the pressing plate 8, the nitrogen spring 21 can lift the pressing plate 8 upward along the limiting groove 43 and the lifting groove 71, and the height position of the upward movement of the pressing plate 8 can be limited through the equal-height bolt 23, so as to avoid that the pressing plate 8 is lifted out of the cavity; it should be noted that the structure of the top of the pressing plate 8 needs to be matched with the structure of the bottom of the cavity, so as to ensure that the top of the pressing plate 8 cooperates with the cavity outside the pressing plate 8 to form a complete stamping cavity when the mold is closed; in order to further ensure the stability of the upward and downward movement of the pressing plate 8 and avoid the offset, the bottom of the pressing plate 8 is provided with a vertically arranged inner guide column 81, the top of the inner guide column 81 is fixedly connected with the pressing plate 8 through a bolt, the lower die plate 3, the spring seat 22 and the lower supporting plate 2 are provided with a guide hole 82 which is in communication with the upper and lower sides, the guide hole 82 is in position correspondence with the upper and lower sides of the inner guide column 81, and the inner guide column 81 is slidably matched with the guide hole 82 in a plug-in manner, when the pressing plate 8 moves upward and downward, the inner guide column 81 moves upward and downward in the guide hole 82, so as to ensure the stability of the horizontal position of the upward and downward movement of the pressing plate 8 and the stamping precision of the product.

[0027] In order to make the upper punch 6 more accurately cooperate with the concave die block 7 when the upper punch 6 moves downward, the top of the concave die frame 4 is provided with a longitudinal limiting block 41 near the center of the front and rear sides, respectively, and the two longitudinal limiting blocks 41 are used to limit the front and rear longitudinal positions of the upper punch 6, the longitudinal limiting block 41 can be adjusted in position according to the upper punch 6 of different sizes which is replaced at the bottom of the upper die seat 1, and the longitudinal limiting block 41 is kept in contact with the upper punch 6 to limit the front and rear longitudinal positions of the upper punch 6.

[0028] When working, the plate to be punched is placed in the die insert 7, and the pressure plate 8 is lifted by the nitrogen spring 221 without pressure, and the height is slightly lower than the top surface of the die insert 7, the plate to be punched is placed on the upper punch 6, and the periphery is limited by the cavity of the die insert 7, the mold is closed, the press drives the upper die set 1 to move downward, and the upper punch 6 is driven downward by the upper die set 1; the upper punch 6 is longitudinally limited by the front and rear longitudinal limiting blocks 41, and the stability of the downward position is maintained, the upper punch 6 continues to move downward after contacting the plate to be punched, the pressure plate 8 moves downward synchronously with the pressure of the plate to be punched, the plate to be punched is formed by the upper punch 6 in the cavity of the die insert 7, and the upper limiting column 11 and the lower limiting column 31 are stopped when they are connected; when the mold is opened, the press drives the upper die set 1 and the upper punch 6 to move upward and reset, the pressure plate 8 moves upward under the condition of no top pressure, the nitrogen spring 221 drives it to move upward, the punched parts are ejected from the die insert 7, and the stripping is realized; according to different products, only the upper punch 6 and the corresponding die insert 7 and the pressure plate 8 can be replaced, so that the mold can be suitable for punching and shaping of other products, the development cost of the mold is saved, the generality is high, and the use is more flexible.

[0029] The universal forming die has simple structure, the upper punch 6 and the die insert 7 can be replaced flexibly according to the size and shape requirements of products, the generality of the mold frame is high, the development and use costs of the mold are saved, and the machining cost is saved; and the stripping of the punched parts can be well realized through the pressure plate 8 which can move upward and downward, and the machining efficiency is improved.

[0030] It should be noted that: the above is only a preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A universal forming die comprising an upper die seat (1), a lower bolster plate (2) and a lower die plate (3), the upper die seat (1) and the lower die plate (3) corresponding to each other in up and down, the lower die plate (3) being fixedly arranged on the lower bolster plate (2) through a spacer block (21), characterized in that: The bottom center of the upper die holder (1) is provided with an upper punch (6) fixedly connected therewith; the top center of the lower bolster plate (2) is provided with a spring seat (22) fixedly connected therewith, the top of the spring seat (22) is attached to the bottom of the lower die plate (3), the spring seat (22) is provided with a nitrogen gas spring (221) and an equal-height bolt (23) capable of moving up and down, the top of the lower die plate (3) is provided with a base plate (5) fixedly connected therewith, the elastic end of the nitrogen gas spring (221) penetrates the lower die plate (3) and the base plate (5) upward, and the threaded end of the equal-height bolt (23) penetrates the lower die plate (3) and the base plate (5) upward; the top of the base plate (5) is provided with a concave die frame (4) fixedly connected therewith, the concave die frame (4) is embedded with a concave die insert (7) fixedly connected therewith, the top of the concave die insert (7) is provided with a cavity, the cavity corresponds to the lower end of the upper punch (6) up and down, and the lower end of the punch (6) and the cavity at the top of the concave die insert (7) are embedded and matched up and down, the cavity center of the concave die insert (7) is provided with a lifting groove (71) communicating up and down, and the bottom center of the concave die frame (4) is provided with a limiting groove (43) communicating up and down, the limiting groove (43) corresponds to the lifting groove (71) up and down and communicates with each other; the lifting groove (71) and the limiting groove (43) are provided with a pressing plate (8) slidingly fitted therewith, the bottom surface of the pressing plate (8) abuts against the elastic end at the top of the nitrogen gas spring (221), and the threaded end of the upper end of the equal-height bolt (23) is fixedly connected with the bottom of the pressing plate (8).

2. A universal forming mold according to claim 1, characterized in that: The concave die frame (4) is provided with an embedded groove (42) with an open top, and the concave die insert (7) is embedded in the embedded groove (42).

3. A universal forming mold according to claim 1, wherein: The concave die frame (4) is provided with a longitudinal limiting block (41) near the center of the top of the front and back sides, respectively, and the two longitudinal limiting blocks (41) are used to limit the longitudinal positions of the front and back sides of the upper punch (6).

4. A universal forming mold according to claim 1, wherein: The bottom of the pressing plate (8) has a vertically arranged inner guide column (81), and the lower die plate (3), spring seat (22) and lower bolster plate (2) are provided with a guide hole (82) communicating up and down, the position of the guide hole (82) corresponds to the position of the inner guide column (81) up and down, and the inner guide column (81) and the guide hole (82) are inserted and fitted to slide up and down.

5. A universal forming mold according to claim 1, wherein: The bottom of the upper die holder (1) is provided with a guide sleeve (12), and the part of the upper die holder (1) corresponding to the center hole of the guide sleeve (12) is provided with a transition hole communicating up and down, the center diameter of the transition hole matches the center diameter of the guide sleeve (12); the center hole of the guide sleeve (12) is provided with an outer guide column (32) slidingly fitted therewith, and the lower end of the outer guide column (32) is fixedly connected to the top of the lower die plate (3).

6. A universal forming mold according to claim 1, wherein: The bottom of the upper die holder (1) is provided with an upper limiting column (11), and the top of the lower die plate (3) is provided with a lower limiting column (31) corresponding to the upper limiting column (11) up and down.

Images