CN214719877U - Special-shaped necking die - Google Patents
Special-shaped necking die Download PDFInfo
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- CN214719877U CN214719877U CN202022632222.9U CN202022632222U CN214719877U CN 214719877 U CN214719877 U CN 214719877U CN 202022632222 U CN202022632222 U CN 202022632222U CN 214719877 U CN214719877 U CN 214719877U
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Abstract
The utility model discloses a special-shaped necking die, which comprises an upper die and a lower die which are matched with each other, wherein the lower die is positioned under the upper die; the upper die comprises a female die, and an upper die guide post positioned in the inner cavity of the female die is fixedly connected with the female die; the top end of the upper die guide post downwards exceeds the top of the female die; the inner cavity of the female die is narrow at the bottom and wide at the top; the lower die comprises a lower die base assembly; a square bottom plate connecting frame is fixedly arranged on the lower die base assembly, an upper end bottom plate is fixedly arranged at the top of the bottom plate connecting frame, and a lower die guide sleeve is arranged in the upper end bottom plate; a special-shaped channel I is arranged in the upper end bottom plate; a channel III formed by enclosing four slotting tool guide sliding blocks which are symmetrically distributed at four corners is arranged in the inner cavity of the bottom plate connecting frame; and a push block slotting tool is arranged in the channel III. The special-shaped necking die of the utility model can realize the stable positioning of a large-size box body or a special-shaped workpiece, and solves the problem of positioning precision during molding; meanwhile, the problem of deformation of the workpiece is avoided.
Description
Technical Field
The utility model relates to a stamping die, concretely relates to large size dysmorphism throat mould.
Background
At present, large-size special-shaped parts have the problem that deformation is caused by self gravity under a standing state due to large size and weight, so that the forming process is difficult, for example, necking of a directional box body is taken as an example, the traditional machining process has the problem that accurate positioning is difficult, a body is easy to deform in the forming process, the yield is low, in addition, the weight of a workpiece is large, the assembling and disassembling speed is low, and the machining efficiency is not high.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a convenient to use, necking die that positioning accuracy is high.
In order to solve the technical problem, the utility model provides a special-shaped necking die, which comprises an upper die and a lower die which are matched with each other, wherein the lower die is positioned right below the upper die;
the upper die comprises a female die, and an upper die guide post positioned in the inner cavity of the female die is fixedly connected with the female die; the top end of the upper die guide post downwards exceeds the top of the female die; the inner cavity of the female die is narrow at the bottom and wide at the top;
the lower die comprises a lower die base assembly;
a square bottom plate connecting frame is fixedly arranged on the lower die base assembly, an upper end bottom plate is fixedly arranged at the top of the bottom plate connecting frame, and a lower die guide sleeve is arranged in the upper end bottom plate; a special-shaped channel I is arranged in the upper end bottom plate;
a channel III formed by enclosing four slotting tool guide sliding blocks which are symmetrically distributed at four corners is arranged in the inner cavity of the bottom plate connecting frame; a push block slotting tool is arranged in the channel III;
the push block slotting tool comprises a cubic frame with a top surface and a bottom surface, and the top of the frame of the push block slotting tool penetrates through the special-shaped channel I upwards and then is positioned above the upper end base plate; a top surface channel is arranged on the top surface of the frame of the push block slotting tool and is positioned right below the upper die pressing block; the lower die guide sleeve is positioned right below the top surface channel;
four upper convex parts are symmetrically arranged at the four corners of the top of the frame of the push block slotting tool, four lower convex parts are symmetrically arranged at the four corners of the bottom of the frame of the push block slotting tool, the upper convex parts and the lower convex parts have the same structure, and a lower chamfer is arranged at the lower half part of the outer side wall;
4 sets of elastic assemblies which are symmetrically distributed at four corners are arranged on the upper surface of the upper end bottom plate, each set of upper elastic assembly consists of an upper end elastic part stop block, an upper end push block elastic part and an upper end forming push block which are sequentially connected from inside to outside, and the upper end elastic part stop block is connected with a frame of the push block slotting tool; the upper half part of the inner side wall of the upper end forming push block is provided with an upper cutting angle I matched with the lower cutting angle of the upper convex part; the working section of the outer side wall of the upper-end forming push block is matched with the inner cavity side wall of the female die;
4 sets of lower elastic assemblies which are symmetrically distributed at four corners are arranged on the lower die base assembly, and each set of lower elastic assembly consists of a lower elastic element stop block, a lower push block elastic element and a lower positioning push block which are sequentially connected from inside to outside; the lower end elastic piece stop block is connected with the frame of the push block slotting tool; the inner side wall of the lower end positioning push block is provided with an upper corner II matched with the lower corner of the lower convex part;
an inner cavity bottom surface is arranged in the inner cavity of the frame of the push block slotting tool; a lower die elastic piece is arranged on the lower die base component and is abutted against the bottom surface of the inner cavity;
the lower die base assembly is provided with a special-shaped channel II, and the special-shaped channel II is superposed with the axial lead of the special-shaped channel I; the upper convex part does not contact the special-shaped channel I when passing through the special-shaped channel I; the lower convex part is not contacted with the special-shaped channel II when passing through the special-shaped channel II.
As the utility model discloses an improvement of dysmorphism throat mould:
four workpiece positioning pieces which are symmetrically distributed at four corners are arranged on the periphery of the bottom plate connecting frame, the bottoms of the workpiece positioning pieces are fixedly connected with the lower die base assembly, and the tops of the workpiece positioning pieces are flush with the upper surface of the upper end bottom plate;
the workpiece positioning piece is provided with a transverse channel corresponding to the lower end positioning push block.
As the utility model discloses a special-shaped throat mould's further improvement:
the lower die base assembly comprises a lower end bottom plate, a lower backing plate and a lower back plate which are fixedly connected from top to bottom in sequence, and a communicated special-shaped channel II is arranged on the lower end bottom plate, the lower backing plate and the lower back plate;
a bottom plate connecting frame is fixedly arranged on the upper surface of the bottom plate at the lower end;
the lower die elastic piece arranged on the upper surface of the lower back plate sequentially penetrates through the lower base plate and the lower end bottom plate upwards, and the top end of the lower die elastic piece is abutted with the bottom surface of the inner cavity;
the bottom of the workpiece positioning piece is fixedly connected with the upper surface of the lower backing plate.
4 sets of lower elastic components which are symmetrically distributed at four corners are arranged on the upper surface of the lower end bottom plate.
As the utility model discloses a special-shaped throat mould's further improvement:
the cross section of the lower back plate, the cross section of the lower backing plate and the cross section of the lower end bottom plate are sequentially reduced.
As the utility model discloses a special-shaped throat mould's further improvement:
an upper mould pressing block is fixedly arranged at the center of the bottom surface of the cavity of the female mould, and the cross section of the upper mould pressing block is smaller than the bottom surface of the cavity of the female mould;
an upper back plate fixedly connected with the female die is arranged above the female die.
As the utility model discloses a special-shaped throat mould's further improvement:
the channel III is matched with the frame of the push block slotting tool.
The utility model discloses in, the work piece setting element plays the positioning action that stews to jumbo size box part, can prevent that it from taking place deformation under the action of gravity of self when stewing, has solved the positioning problem, and lower extreme location ejector pad plays further fastening positioning action to the box part in mould forming process, has solved positioning accuracy's problem, and the part qualification rate that promotes greatly that just can be further is acted on simultaneously to above-mentioned part.
The utility model discloses a dysmorphism throat mould can satisfy product technical requirement and improve product quality and work efficiency.
The special-shaped necking die of the utility model can realize the stable positioning of a large-size box body or a special-shaped workpiece, and solves the problem of positioning precision during molding; meanwhile, the problem of deformation of the workpiece is avoided.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the special-shaped necking die of the present invention during die opening;
FIG. 2 is a schematic view of the mold closed in FIG. 1;
fig. 3 is a schematic view of section a-a in fig. 2.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
embodiment 1, a special-shaped necking die, as shown in fig. 1 to 3, includes an upper die and a lower die. The lower die is positioned right below the upper die and is matched with the upper die to work. When the stretch-extrusion die is not operated or in an initial state, the upper and lower dies are separated as shown in fig. 1.
The upper die comprises an upper back plate 1, a concave die 2, an upper die pressing block 3 and an upper die guide post 4.
The outer bottom surface of the female die 2 is fixedly connected with the lower surface of the upper back plate 1, the inner cavity of the female die 2 is a truncated cone-shaped inner cavity with a narrow bottom and a wide top, an upper die pressing block 3 is fixedly arranged at the center of the bottom surface 23 of the truncated cone-shaped inner cavity of the female die 2, and the cross section of the upper die pressing block 3 is far smaller than the bottom surface 23 of the truncated cone-shaped inner cavity of the female die 2; the upper die guide post 4 penetrates through the upper die pressing block 3 and the female die 2 and then is connected with the upper back plate 1, namely, the upper die guide post 4 is fixed into a whole, so that all parts of the upper die integrally move up and down when the die works. The top end 41 of the upper mold guide post 4 extends downwardly beyond the top 22 of the die 2.
The lower die comprises a lower die base assembly; the lower die base component comprises a lower end bottom plate 12, a lower backing plate 13 and a lower back plate 14 which are fixedly connected from top to bottom in sequence; the cross section of the lower back plate 14 is larger than that of the lower backing plate 13 and larger than that of the lower bottom plate 12.
A square bottom plate connecting frame 10 is fixedly arranged on the upper surface of the lower bottom plate 12, an upper bottom plate 9 is fixedly arranged on the top of the bottom plate connecting frame 10, and a lower die guide sleeve 18 is arranged in the upper bottom plate 9. A special-shaped channel I is also arranged in the upper end bottom plate 9.
A channel III which is formed by enclosing four slotting tool guide sliding blocks 24 which are symmetrically distributed at four corners is arranged in the inner cavity of the bottom plate connecting frame 10; namely, four slotting tool guide sliders 24 are uniformly and symmetrically arranged in the inner cavity of the base plate connecting frame 10, and a space formed by enclosing 4 slotting tool guide sliders 24 is used as a channel III. And a push block slotting tool 5 is arranged in the channel III.
The push block slotting tool 5 comprises a cubic frame with a top surface and a bottom surface, and the top of the frame of the push block slotting tool 5 penetrates through the special-shaped channel I upwards and then is positioned above the upper end bottom plate 9. A top surface channel 53 is arranged on the top surface of the frame of the push block slotting tool 5, and the top surface channel 53 is positioned right below the upper die pressing block 3; and the diameter of the top surface passage 53 is equal to the diameter of the upper die guide post 4. When the upper and lower dies are closed, the upper die guide post 4 passes through the top surface passage 53.
The cross section of the upper pressing block 3 is basically equal to the top surface of the frame of the push block slotting tool 5.
Four upper convex parts 51 are symmetrically arranged at four corners of the top of the frame of the push block slotting tool 5 (namely, four upper convex parts 51 are respectively arranged at four sides of the top of the frame of the push block slotting tool 5), four lower convex parts 52 are symmetrically arranged at four corners of the bottom of the frame of the push block slotting tool 5, the upper convex parts 51 and the lower convex parts 52 have the same structure, and the lower half parts of the outer side walls are provided with lower chamfer angles 512; that is, the outer sidewall is composed of a vertical surface 511 and an undercut 512 (in the form of a slope) below the vertical surface 511. The upper convex portion 51, the lower convex portion 52 and the pusher insert 5 frame are integrated.
An inner cavity bottom surface 54 is arranged in the inner cavity of the frame of the push block slotting cutter 5, and the inner cavity bottom surface 54 is close to the bottom of the frame.
The centers of the lower end bottom plate 12, the lower backing plate 13 and the lower back plate 14 are provided with communicated special-shaped channels II, and the special-shaped channels II are superposed with the axial lead of the special-shaped channels I in the upper end bottom plate 9; the shape and the size of the special-shaped channel I and the special-shaped channel II are the same, and the shape and the size of the special-shaped channel I can ensure that the push block slotting tool 5 with the upper convex part 51 is not contacted with the special-shaped channel I when passing through the special-shaped channel I (namely, the shape and the size of the special-shaped channel I are larger than the external dimension of the push block slotting tool 5 with the upper convex part 51); similarly, the shape and size of the special-shaped channel II are required to be satisfied that the push block insert 5 with the lower convex part 52 does not contact with the special-shaped channel II when passing through the special-shaped channel II.
The shape and size of the channel iii are the outer size of the frame of the push block slotting tool 5 (i.e., the outer size of the vertical edge in the middle of the frame of the push block slotting tool 5). Therefore, the push block slotting tool 5 can move up and down through the channel III, and the channel III plays a role in positioning and guiding.
4 sets of elastic components are arranged on the upper surface of the upper end bottom plate 9, and the four corners of the elastic components are symmetrically distributed; each set of upper elastic assembly comprises an upper end elastic part stop block 20, an upper end push block elastic part 19 and an upper end forming push block 6, wherein the upper end elastic part stop block 20, the upper end push block elastic part 19 and the upper end forming push block 6 are sequentially connected from inside to outside; the upper end elastic part stop block 20 is connected with the frame of the push block slotting tool 5; therefore, the upper-end forming push block 6 can move along the upper surface of the upper-end bottom plate 9 under the action of the elastic expansion and contraction of the upper-end push block elastic piece 19. When the die is closed, due to the extrusion effect of the push block slotting tool 5 on the upper end forming push blocks 6, the four upper end forming push blocks 6 move towards the periphery simultaneously and are matched with the female die 2 to realize the required necking forming of the workpiece 7, when the die is opened, the push block slotting tool 5 moves upwards to cancel the extrusion effect on the upper end forming push blocks 6, the four upper end forming push blocks 6 move towards the center of the upper end bottom plate 9 to leave the workpiece simultaneously under the retraction effect of the upper end push block elastic piece 19, and the manipulator can take the workpiece 7 out of the die conveniently.
The structure of each upper end forming push block 6 is as follows:
the inner side wall of the upper end forming push block 6 is composed of an inner straight surface positioned on the lower half part and an upper cut angle I61 (which is an inner inclined surface) positioned on the upper half part, the upper cut angle I61 is parallel and matched with a lower cut angle 512 (which is in an inclined surface shape) of the upper convex part 51, the inner straight surface of the upper end forming push block 6 is parallel and matched with a vertical surface 511 of the upper convex part 51, and therefore when the push block slotting tool 5 moves downwards, the upper cut angle I61 and the lower cut angle 512 of the upper convex part 51 can be completely attached and contacted. Further, the inner straight surface of the upper-end-forming push block 6 is slightly closer to the central axis of the push block insert 5 than the vertical surface 511 of the upper protrusion 51, and therefore, the upper-end-forming push block 6 is gradually moved toward the outer periphery after being pressed.
The outer side wall of the upper end forming push block 6 consists of an outer straight surface positioned at the lower half part and a working section 62 (an outer inclined surface) positioned at the upper half part, and the working section 62 is matched with the inner cavity side wall 21 of the female die 2.
The lower elastic member 15 mounted on the upper surface of the lower back plate 14 sequentially penetrates the lower backing plate 13 and the lower bottom plate 12 upward, and then the top end of the lower elastic member 15 abuts against the bottom surface 54 of the cavity in the frame of the pusher insert 5. Therefore, the push block insert 5 is positioned at the center of the lower die through the channel III and can move up and down under the action of the lower die elastic piece 15.
Four workpiece positioning pieces 8 are symmetrically arranged at four corners of the periphery of the bottom plate connecting frame 10, and the workpiece positioning pieces 8 are fixedly connected with the upper surface of the lower backing plate 13 and flush with the upper surface of the upper end bottom plate 9.
Similarly, 4 sets of lower elastic components which are symmetrically distributed at four corners are arranged on the upper surface of the lower end bottom plate 12; each set of lower elastic assembly comprises a lower end elastic piece stop block 17, a lower end push block elastic piece 16 and a lower end positioning push block 11, wherein the lower end elastic piece stop block 17, the lower end push block elastic piece 16 and the lower end positioning push block 11 are sequentially connected from inside to outside; the lower end elastic piece stop block 17 is connected with the frame of the block slotting cutter 5; therefore, the lower end positioning push block 11 can move along the radial direction along the upper surface of the lower end bottom plate 12 under the elastic action of the lower end push block elastic piece 16; when the die is closed, due to the extrusion effect of the push block slotting tool 5 on the lower end positioning push block 11, the four lower end positioning push blocks 11 simultaneously move towards the periphery and are matched with the workpiece positioning piece 8, so that the workpiece 7 is firmly and fixedly positioned in the die during necking forming, when the die is opened, the push block slotting tool 5 moves upwards to cancel the extrusion effect on the lower end positioning push block 11, the lower end positioning push block 11 simultaneously moves towards the center of the lower end bottom plate 12 under the retraction effect of the lower end push block elastic piece 16 to leave the workpiece, and the manipulator can take the workpiece 7 out of the die conveniently.
A transverse channel corresponding to the lower end positioning push block 11 is arranged on the side wall of the workpiece positioning piece 8; and because the bottom plate connecting frame 10 is a frame-shaped bracket, the lower end positioning push block 11 can sequentially penetrate through the bottom plate connecting frame 10 and the transverse channel on the side wall of the workpiece positioning piece 8 outwards.
The inner side wall of the lower end positioning push block 11 is composed of an inner straight surface located at the lower half part and an upper cut angle two 111 (which is an inner inclined surface) located at the upper half part, and the upper cut angle two 111 is parallel to and matched with a lower cut angle 512 (which is in an inclined surface shape) of the lower convex part 52, so that when the push block slotting tool 5 moves downwards, the upper cut angle two 111 and the lower cut angle 512 of the lower convex part 52 can be completely attached and contacted. The inner straight surface of the lower end positioning push block 11 is parallel to and matched with the vertical surface 511 of the lower convex part 52. Further, the inner straight surface of the lower end positioning push block 11 is slightly closer to the central axis of the push block insert 5 than the vertical surface 511 of the lower protrusion 52, and therefore, the lower end positioning push block 11 is gradually moved toward the outer periphery after being pressed.
When the push block slotting tool 05 moves up and down in the die, the up-and-down movement can be converted into horizontal movement by abutting and sliding of the inclined plane, so that the movement of the upper end forming push block 6 and the lower end positioning push block 11 is realized.
The lower elastic member 15 is a nitrogen spring.
The working process of the necking die is as follows:
1. placing the workpiece 7:
the workpiece 7 to be processed is sleeved on the periphery of the workpiece positioning element 8, and because the size of the inner cavity of the workpiece 7 is consistent with the external size formed by enclosing the 4 workpiece positioning elements 8, the workpiece 7 can be fixedly placed on the lower die processing position by the workpiece positioning element 8, and the bottom end of the workpiece 7 is positioned on the upper surface of the lower backing plate 13 and is statically placed (as shown in fig. 1). The top part of the workpiece 7 to be reduced is positioned at the working section 62 of the outer side wall of the upper end forming push block 6.
At the moment, a certain gap is kept between the outer side wall of the upper end forming push block 6 and the workpiece 7, namely, the two are not contacted; similarly, the outer side wall of the lower end positioning push block 11 and the workpiece 7 keep a certain gap.
2. Molding a mold: and closing the upper die and the lower die to finish necking action.
The method comprises the following specific steps:
the punching machine applies downward pressure to the upper die, so that all parts of the upper die move downward together; in the process of pressing down, the upper die guide post 4 firstly contacts with the lower die guide sleeve 18 after penetrating through the top surface channel 53, so that all parts of the upper die are aligned with the lower die in advance, and the guide function is realized on the positions of all parts of the upper die and the lower die in the process of matching the die; then the punch press continues to press downwards, when the upper die moves until the lower surface of the upper pressing block 3 is contacted with the top surface of the push block insert 5, the push block insert 5 starts to move downwards under the pressure of the upper pressing block 3, in the process, the lower cutting angle 512 of the upper convex part 51 is gradually abutted and slid with the upper cutting angle I61 of the upper end forming push block 6, and meanwhile, the lower cutting angle 512 of the lower convex part 52 is gradually abutted and slid with the upper cutting angle II 111 of the lower end positioning push block 11.
The upper end forming push block 6 and the lower end positioning push block 11 gradually move towards the outer periphery under the extrusion of the inclined planes, and finally the upper pressing block 3 presses the push block slotting tool 5 downwards to ensure that the vertical surface 511 of the upper convex part 51 is completely contacted with the inner straight surface of the upper end forming push block 6, and simultaneously, the vertical surface 511 of the lower convex part 52 is completely contacted with the inner straight surface of the lower end positioning push block 11 (see figure 2). At the moment, the outer side wall of the lower end positioning push block 11 is contacted with the workpiece 7, so that the workpiece 7 is prevented from deforming; and the top of the workpiece 7 is to be necked between the working section 62 of the outer side wall of the upper-end forming push block 6 and the inner cavity side wall 21 of the female die 2, finally the female die 2 and the upper die forming push block 6 extrude the top of the workpiece 7 to be necked together, so that the top of the workpiece 7 to be necked is bent inwards along with the inner cavity side wall 21 of the female die 2 and the working section 62 of the upper die forming push block 6 (see fig. 2), and when the bottom surface 23 of the table-shaped inner cavity of the female die 2 and the upper surface of the upper die forming push block 6 are separated by a material thickness h of the workpiece 7, the die is closed in place.
When the mold is closed in place, as illustrated in fig. 2.
3. Resetting: the upper and lower dies are separated, and the processed workpiece 7 is taken out of the die.
The method comprises the following specific steps:
when the mould is closed in place in the previous step, the workpiece 7 is machined, the stamping machine cancels the pressure applied to the upper mould and drives all parts of the upper mould to return to the mould opening position (as shown in figure 1); the upper back plate 1 drives all parts of the upper die to integrally move upwards, the upper die guide post 4 is separated from the lower die guide sleeve 18 and the top surface channel 53, and finally the upper die is completely separated from the lower die; the lower die elastic member 15 applies upward elastic restoring force to the push block insert 5 to push the push block insert 5 upward. In this process, as for the upper convex portion 51, first, the vertical surface 511 of the upper convex portion 51 is separated from the inner straight surface of the upper end molding push block 6, and then, the lower chamfer 512 of the upper convex portion 51 is separated from the upper chamfer one 61 of the upper end molding push block 6; meanwhile, in the case of the lower protrusion 52, first, the vertical surface 511 of the lower protrusion 52 is separated from the inner straight surface of the lower end positioning push block 11, and then, the lower chamfer 512 of the lower protrusion 52 is separated from the upper chamfer two 111 of the lower end positioning push block 11. The upper end forming push block 6 and the lower end positioning push block 11 are respectively retracted to the initial positions (as shown in fig. 1) by the restoring forces of the upper end push block elastic member 19 and the lower end push block elastic member 16, which are extended and restored to the original lengths. Finally, the lower die elastic member 15 is returned from the compressed state to the fully expanded state, and the die separation is completed.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (6)
1. Dysmorphism throat mould, characterized by: the device comprises an upper die and a lower die which are matched with each other, wherein the lower die is positioned right below the upper die;
the upper die comprises a female die (2), and an upper die guide post (4) positioned in the inner cavity of the female die (2) is fixedly connected with the female die (2); the top end (41) of the upper die guide post (4) is downward beyond the top (22) of the female die (2); the inner cavity of the female die (2) is narrow at the bottom and wide at the top;
the lower die comprises a lower die base assembly;
a square bottom plate connecting frame (10) is fixedly arranged on the lower die base assembly, an upper bottom plate (9) is fixedly arranged at the top of the bottom plate connecting frame (10), and a lower die guide sleeve (18) is arranged in the upper bottom plate (9); a special-shaped channel I is arranged in the upper end bottom plate (9);
a channel III formed by enclosing four slotting tool guide sliding blocks (24) which are symmetrically distributed at four corners is arranged in an inner cavity of the bottom plate connecting frame (10); a push block slotting tool (5) is arranged in the channel III;
the push block slotting tool (5) comprises a cubic frame with a top surface and a bottom surface, and the top of the frame of the push block slotting tool (5) penetrates through the special-shaped channel I upwards and then is positioned above the upper end bottom plate (9); a top surface channel (53) is arranged on the top surface of the frame of the push block slotting tool (5), and the top surface channel (53) is positioned right below the upper die pressing block (3); the lower die guide sleeve (18) is positioned right below the top surface channel (53);
four upper convex parts (51) are symmetrically arranged at the top of a frame of the push block slotting tool (5) at four corners, four lower convex parts (52) are symmetrically arranged at the bottom of the frame of the push block slotting tool (5) at four corners, the upper convex parts (51) and the lower convex parts (52) have the same structure, and the lower half parts of the outer side walls are provided with lower chamfer angles (512);
4 sets of elastic components which are symmetrically distributed at four corners are arranged on the upper surface of the upper end bottom plate (9), and each set of upper elastic component consists of an upper end elastic component stop block (20), an upper end push block elastic component (19) and an upper end forming push block (6) which are sequentially connected from inside to outside; the upper end elastic part stop block (20) is connected with the frame of the push block slotting tool (5); the upper half part of the inner side wall of the upper end forming push block (6) is provided with a first upper cutting angle (61) matched with the lower cutting angle (512) of the upper convex part (51); the working section (62) of the outer side wall of the upper end forming push block (6) is matched with the inner cavity side wall (21) of the female die (2);
4 sets of lower elastic assemblies which are symmetrically distributed at four corners are arranged on the lower die base assembly, and each set of lower elastic assembly consists of a lower elastic element stop block (17), a lower push block elastic element (16) and a lower positioning push block (11) which are sequentially connected from inside to outside; the lower end elastic piece stop block (17) is connected with the frame of the push block slotting tool (5); an upper tangent angle II (111) matched with the lower tangent angle (512) of the lower convex part (52) is arranged on the inner side wall of the lower end positioning push block (11);
an inner cavity bottom surface (54) is arranged in the inner cavity of the frame of the push block slotting tool (5); a lower die elastic piece (15) is arranged on the lower die base assembly, and the lower die elastic piece (15) is abutted with the bottom surface (54) of the inner cavity;
the lower die base assembly is provided with a special-shaped channel II, and the special-shaped channel II is superposed with the axial lead of the special-shaped channel I; the upper convex part (51) is not contacted with the special-shaped channel I when passing through the special-shaped channel I; the lower convex part (52) does not contact with the special-shaped channel II when passing through the special-shaped channel II.
2. The special-shaped necking die of claim 1, wherein:
four workpiece positioning pieces (8) which are symmetrically distributed at four corners are arranged on the periphery of the bottom plate connecting frame (10), the bottoms of the workpiece positioning pieces (8) are fixedly connected with the lower die base component, and the tops of the workpiece positioning pieces (8) are flush with the upper surface of the upper end bottom plate (9);
a transverse channel corresponding to the lower end positioning push block (11) is arranged on the workpiece positioning piece (8).
3. The special-shaped necking die of claim 2, wherein:
the lower die base assembly comprises a lower end bottom plate (12), a lower backing plate (13) and a lower back plate (14) which are fixedly connected from top to bottom, and communicated special-shaped channels II are arranged on the lower end bottom plate (12), the lower backing plate (13) and the lower back plate (14);
a bottom plate connecting frame (10) is fixedly arranged on the upper surface of the lower end bottom plate (12);
a lower die elastic piece (15) arranged on the upper surface of the lower back plate (14) upwards sequentially penetrates through the lower backing plate (13) and the lower end bottom plate (12), and the top end of the lower die elastic piece (15) is abutted with the bottom surface (54) of the inner cavity;
the bottom of the workpiece positioning piece (8) is fixedly connected with the upper surface of the lower backing plate (13);
4 sets of lower elastic components with four corners symmetrically distributed are arranged on the upper surface of the lower end bottom plate (12).
4. The special-shaped necking die of claim 3, wherein:
the cross section of the lower back plate (14), the cross section of the lower backing plate (13) and the cross section of the lower end bottom plate (12) are reduced in sequence.
5. The special-shaped necking die of any one of claims 1 to 4, wherein:
an upper pressing block (3) is fixedly arranged at the center of the bottom surface (23) of the inner cavity of the female die (2), and the cross section of the upper pressing block (3) is smaller than the bottom surface (23) of the inner cavity of the female die (2);
an upper back plate (1) fixedly connected with the concave die (2) is arranged above the concave die (2).
6. The special-shaped necking die of claim 5, wherein:
the channel III is matched with the frame of the push block slotting tool (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022632222.9U CN214719877U (en) | 2020-11-16 | 2020-11-16 | Special-shaped necking die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022632222.9U CN214719877U (en) | 2020-11-16 | 2020-11-16 | Special-shaped necking die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214719877U true CN214719877U (en) | 2021-11-16 |
Family
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| CN202022632222.9U Active CN214719877U (en) | 2020-11-16 | 2020-11-16 | Special-shaped necking die |
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| CN (1) | CN214719877U (en) |
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