CN211464529U - Bidirectional cold extrusion forming die - Google Patents

Abstract

The utility model discloses a bidirectional cold extrusion forming die, which comprises an upper die part and a lower die part, wherein the lower die part comprises a lower template, a lower die insert, a lower punch, a lower stripping sleeve, a stripping fixing plate, a lower clamping plate, a lower padding plate, a lower die holder and a linear driving assembly; the upper die part comprises an upper die base, an upper base plate, an upper clamping plate, an upper punch, an inner guide pillar and an outer guide pillar. Placing the aluminum material into the cavity and supporting the aluminum material by the lower punch, closing the die, enabling the upper punch to extend into the cavity to be matched with the lower punch to extrude the aluminum material into the notebook computer rotating shaft shell in an extrusion mode, and guiding the aluminum material through the inner guide pillar and the outer guide pillar to achieve accurate positioning; after the mold is opened, the linear driving assembly drives the lower stripper sleeve to strip the notebook computer rotating shaft shell from the lower punch and withdraw from the cavity through the stripper fixing plate, so that the purpose of stripping is realized, and a notebook computer rotating shaft shell product is obtained. In addition, the whole structure is simple, the realization is easy, the working efficiency is high, the product forming quality is high, and the wide popularization and the use are facilitated.

Description

Bidirectional cold extrusion forming die

technical field

The utility model relates to the technical field of molds, in particular to a bidirectional cold extrusion forming mold.

Background technique

The hinge of the notebook is an important part connecting the body and the screen of the notebook, and it is not only a connecting part but also a part of the shell of the notebook. The notebook hinge shell not only needs to have the function of the hinge, but also has an aesthetic effect. The existing notebook hinge shells all include a cylindrical shell and a block. The processing method has low processing efficiency, and it is difficult to position and weld the stopper, and the high temperature generated during welding can easily lead to cylindrical deformation, which affects the appearance of the product.

Utility model content

In view of the above deficiencies, the purpose of the present utility model is to provide a bidirectional cold extrusion forming die with ingenious and reasonable structural design, which can rapidly form a notebook rotating shaft shell.

For achieving the above object, the technical scheme provided by the utility model is:

A bidirectional cold extrusion forming die comprises an upper die part and a lower die part, the lower die part comprises a lower die plate, a lower die insert, a lower punch, a lower stripping sleeve, a stripping fixing plate, a lower clamping plate, The lower backing plate, the lower die seat and the linear drive assembly, the stripping fixing plate, the lower clamping plate, the lower backing plate and the lower mold seat are stacked in sequence from top to bottom, and the lower mold seat is provided with an outer surface. Guide sleeve; the lower mold plate is arranged on the lower mold base through the spacer, and is located directly above the stripping fixing plate, the lower mold insert is arranged on the lower mold plate, and the lower mold insert is provided with a Its vertical penetration cavity, the lower end of the lower punch is set on the lower splint, the upper end penetrates the stripping fixing plate and extends into the cavity, the lower stripping sleeve is sleeved on the lower punch, and the lower stripping The lower end of the sleeve is fixed on the stripping fixing plate, and the linear driving component is arranged on the lower die base, and can drive the stripping fixing plate to perform upward and downward movements; the upper die part includes an upper die base, an upper die A backing plate, an upper clamping plate, an upper punch, an inner guide post and an outer guiding post, the upper die base, the upper backing plate and the upper clamping plate are stacked in order from top to bottom, and the outer guide post corresponds to the The position of the outer guide sleeve is set on the upper die seat, the upper end of the inner guide post is set on the upper backing plate, the lower end penetrates the upper splint and protrudes, and the lower formwork is provided with a matching with the inner guide post. The inner guide hole of the upper punch is arranged on the upper clamping plate, and can extend into the cavity when descending.

As an improvement of the present invention, the outline of the lower mold insert is circular, the lower template is provided with an assembly cavity that matches the lower mold insert, and the lower mold insert is provided with an assembly cavity. Two limiting protruding strips are arranged on the outer peripheral surface, and a positioning groove matched with the limiting protruding strips is arranged on the cavity wall of the assembling cavity, which is convenient for quick positioning and installation.

As an improvement of the utility model, the length of the upper punch protruding from the upper clamping plate is 30-40 mm, and the protruding length is short, which reduces the eccentric phenomenon during molding and improves the working accuracy.

As an improvement of the present utility model, the linear drive assembly includes a linear drive device, an ejector rod, a pull-back rod, a support plate and a needle plate, and the two support plates are symmetrically arranged on the bottom surface of the lower die base, and the linear drive device On the two plates, the needle plate is arranged on the driving part of the linear drive device, located between the two plates, the lower end of the ejector rod is pressed against the needle plate, and the upper end penetrates the lower die seat, The lower backing plate and the lower clamping plate are pressed against the stripping fixing plate, the lower end of the pullback rod is radially enlarged to form a rod head, and the upper end penetrates through the lower die seat, the lower backing plate and the lower clamping plate in turn and is connected on the stripping plate.

As an improvement of the present utility model, the linear drive device is an air cylinder, an oil cylinder or a linear motor.

As an improvement of the present utility model, the upper end of the pullback rod is provided with an external thread, and the stripping fixing plate is provided with a screw hole adapted to the external thread, and the external thread is screwed into the screw hole to realize the installation for the purpose of easy installation.

As an improvement of the present invention, a small guide post is provided on the lower backing plate, the lower end of the small guide post protrudes from the lower die seat, and the needle plate is provided with a small guide post corresponding to the small guide post. The adapted small guide hole can guide the needle board through the cooperation of the small guide post and the small guide hole, and improve the stability of the lifting action.

The beneficial effects of the utility model are as follows: the structural design of the utility model is ingenious and reasonable. The aluminum material is put into the cavity and supported by the lower punch. At this time, the mold is closed, and the upper punch extends into the cavity and the lower punch. The aluminum material is extruded to form the notebook shaft shell, and it is guided by the inner guide column and the outer guide column to achieve precise positioning; after the mold is opened, the linear drive assembly is driven by the stripping fixing plate to move on the lower stripping sleeve. The notebook shaft shell is released from the lower punch and exits the cavity to achieve the purpose of stripping, and the notebook shaft shell product is obtained; then, the linear drive assembly drives the lower stripping sleeve through the stripping fixing plate to go down to the initial position, waiting for the next round forming process. In addition, the overall structure is simple, easy to implement, high in work efficiency, and high in product molding quality, which is conducive to wide popularization and use.

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present invention.

Figure 2 is a schematic cross-sectional structure diagram of the present invention.

FIG. 3 is a schematic view of the structure of the upper mold part of the present invention.

FIG. 4 is a schematic view of the structure of the lower mold part of the present invention.

Figure 5 is a schematic structural diagram of an upper punch, a lower die insert, a lower stripper sleeve and a lower punch in the present invention.

Detailed ways

Referring to FIGS. 1 to 5 , this embodiment provides a bidirectional cold extrusion forming die, which includes an upper die part 1 and a lower die part 2 .

The lower die part 2 includes a lower die plate 21, a lower die insert 22, a lower punch 23, a lower stripping sleeve 24, a stripping fixing plate 25, a lower clamping plate 26, a lower backing plate 27, a lower die base 28 and a linear drive. Component 29, the stripping fixing plate 25, the lower clamping plate 26, the lower backing plate 27 and the lower die base 28 are stacked in sequence from top to bottom, and the lower die base 28 is provided with an outer guide sleeve 281; The lower die plate 21 is set on the lower die base 28 through the spacer block 20 , and is located just above the stripping fixing plate 25 .

The lower mold insert 22 is arranged on the lower template 21 . Specifically, the outline of the lower mold insert 22 is a circle, and the lower template 21 is provided with a matching lower mold insert 22 . The assembly cavity, the outer peripheral surface of the lower die insert 22 is provided with two limit protruding strips 221, and the cavity wall of the assembly cavity is provided with a positioning groove matching the limit protruding strips 221, It is convenient for quick positioning and installation. The lower die insert 22 is provided with a cavity 222 which can penetrate vertically, the lower end of the lower punch 23 is arranged on the lower clamping plate 26, and the upper end penetrates the stripping fixing plate 25 and extends into the cavity 222, The lower stripping sleeve 24 is sleeved on the lower punch 23, and the lower end of the lower stripping sleeve 24 is fixed on the stripping fixing plate 25, and the linear drive assembly 29 is set on the lower die base 28, and can The stripping fixing plate 25 is driven to move upward and downward. Specifically, the linear drive assembly 29 includes a linear drive device 291, an ejector rod 292, a pullback rod 293, a support plate 294 and a needle plate 295. In this embodiment, the linear drive device 291 is preferably an air cylinder, and other embodiments Among them, the linear drive device 291 may also be an oil cylinder or a linear motor. The two plates 294 are symmetrically arranged on the bottom surface of the lower die base 28 at intervals, the linear driving device 291 is arranged on the two plates 294, and the needle plate 295 is arranged on the driving part of the linear driving device 291, located between the two plates 294. During the time, the lower end of the ejector rod 292 is pressed on the needle plate 295, and the upper end penetrates the lower die base 28, the lower backing plate 27 and the lower clamping plate 26 in turn and is pressed on the stripping fixing plate 25, so The lower end of the pullback rod 293 is radially enlarged to form a rod head, and the upper end penetrates through the lower die base 28 , the lower backing plate 27 and the lower clamping plate 26 in sequence and is connected to the stripping fixing plate 25 . Specifically, the upper end of the pullback rod 293 is provided with an external thread, and the stripping fixing plate 25 is provided with a screw hole adapted to the external thread, and the external thread is screwed into the screw hole to achieve the purpose of installation. Easy to install.

The upper die part 1 includes an upper die base 11, an upper backing plate 12, an upper clamping plate 13, an upper punch 14, an inner guide post 15 and an outer guiding post 16, the upper die base 11, the upper backing plate 12 and the upper clamping plate 13 are stacked in sequence from top to bottom, the outer guide post 16 is set on the upper die base 11 corresponding to the position of the outer guide sleeve 281, and the upper end of the inner guide post 15 is set on the upper backing plate 12 The upper and lower ends penetrate through the upper clamping plate 13 and protrude. The lower template 21 is provided with an inner guide hole which is adapted to the inner guide post 15. can extend into the cavity 222. The protruding length of the upper punch 14 from the upper clamping plate 13 is 30-40 mm, and the protruding length is short, which reduces the eccentric phenomenon during molding and improves the working accuracy.

Preferably, a small guide post 271 is provided on the lower backing plate 27, the lower end of the small guide post 271 protrudes from the lower die seat 28, and the needle plate 295 is provided with the small guide post. The small guide hole matched with 271, through the cooperation of the small guide post 271 and the small guide hole, can guide the needle plate 295, improve the stability of the lifting action, and effectively prevent the product from being stuck and the cylinder stuck.

When working, the upper die part 1 is installed on the punching slide of the punching machine in advance, and the lower die part 2 is installed on the working table of the punching machine tool. Put the aluminum material into the cavity 222, at this time the lower punch 23 supports the aluminum material; start the stamping machine, the stamping slider drives the upper die part 1 downward to realize the clamping action, and the upper punch 14 extends into the cavity 222 cooperates with the lower punch 23 to extrude the aluminum material to form the notebook rotating shaft shell. The stamping slider drives the upper mold part 1 upward to realize the mold opening action, and the linear drive device 291 extends through the ejector rod 292 to push the stripping fixing plate 25 upward, and the lower stripping sleeve 24 on the stripping fixing plate 25 drives the notebook shaft shell. Come out from the lower punch 23 and exit the cavity 222 to achieve the purpose of removing the material. At this time, the notebook rotating shaft shell product can be taken out; finally, the linear drive device 291 retracts through the pull-back rod 293 to pull the material-removing fixing plate 25 downward, so that the lower The stripping sleeve 24 goes down to the initial position and waits for the next molding process.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. As described in the above-mentioned embodiments of the present invention, other molds obtained by adopting the same or similar structure are all within the protection scope of the present invention.

Claims (7)

1. a bidirectional cold extrusion forming die, it comprises upper die part and lower die part, it is characterized in that, described lower die part comprises lower die plate, lower die insert, lower punch, lower stripping sleeve, stripping The fixing plate, the lower clamping plate, the lower backing plate, the lower die base and the linear drive assembly, the stripping fixing plate, the lower clamping plate, the lower backing plate and the lower die holder are stacked in order from top to bottom. An outer guide sleeve is provided on the die base; the lower die plate is set on the lower die base through a spacer block, and is located just above the stripping fixing plate, the lower die insert is arranged on the lower die plate, and the lower die insert is placed on the lower die set. The part is provided with a cavity that can penetrate it vertically, the lower end of the lower punch is set on the lower clamping plate, the upper end penetrates the stripping fixing plate and extends into the cavity, and the lower stripping sleeve is sleeved on the lower punch. , and the lower end of the lower stripping sleeve is fixed on the stripping fixing plate, the linear drive assembly is arranged on the lower die base, and can drive the stripping fixing plate to perform upward and downward movements; the upper die part It includes an upper die seat, an upper backing plate, an upper clamping plate, an upper punch, an inner guide column and an outer guiding column, and the upper die seat, the upper backing plate and the upper clamping plate are stacked in sequence from top to bottom. The outer guide post is arranged on the upper die base corresponding to the position of the outer guide sleeve, the upper end of the inner guide post is arranged on the upper backing plate, and the lower end penetrates through the upper clamping plate and protrudes out. The inner guide hole is adapted to the inner guide post, the upper punch is arranged on the upper clamping plate, and can extend into the cavity when descending. 2. The bidirectional cold extrusion forming die according to claim 1, characterized in that: the outline of the lower die insert is circular, and the lower die plate is provided with a fitting for the lower die insert There are two limiting protruding strips on the outer peripheral surface of the lower mold insert, and a positioning groove matching the limiting protruding strips is provided on the cavity wall of the assembling cavity. 3 . The bidirectional cold extrusion forming die according to claim 1 , wherein the length of the upper punch extending from the upper clamping plate is 30-40 mm. 4 . 4. The bidirectional cold extrusion forming die according to claim 1, wherein the linear drive assembly comprises a linear drive device, an ejector rod, a pullback rod, a support plate and a needle plate, and the two support plates are arranged symmetrically at the bottom. On the bottom surface of the die base, the linear driving device is arranged on two plates, the needle plate is arranged on the driving part of the linear driving device, between the two plates, and the lower end of the ejector rod is pressed against the needle plate The upper end and the upper end penetrate the lower die base, the lower backing plate and the lower clamping plate in sequence and are pressed against the stripping fixing plate. The die base, the lower backing plate and the lower clamping plate are connected to the stripping fixing plate. 5 . The bidirectional cold extrusion forming die according to claim 4 , wherein the linear driving device is an air cylinder, an oil cylinder or a linear motor. 6 . 6 . The bidirectional cold extrusion forming die according to claim 4 , wherein the upper end of the pullback rod is provided with an external thread, and the stripping fixing plate is provided with a screw hole adapted to the external thread. 7 . . 7 . The bidirectional cold extrusion forming die according to claim 4 , wherein a small guide post is provided on the lower backing plate, and the lower end of the small guide post protrudes from the lower die seat and is located on the lower die base. 8 . The needle plate is provided with a small guide hole matched with the small guide post.

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