CN215199221U - Eccentric anti-skidding square sleeve forming die - Google Patents

Abstract

The utility model provides an eccentric anti-skidding square sleeve forming die relates to the technical field of electric bicycle with manpower drive. The eccentric anti-skid square sleeve forming die comprises a die shell, a die sleeve, a die core and a locking screw; the mould shell is provided with a mounting hole; the die sleeve is embedded in the inner wall of one end part of the mounting hole, and the inner wall of the die sleeve is in a conical pipe shape; the outer wall of the mold core is matched with the inner wall of the mold sleeve in shape, and the outer wall of the mold core is fixed on the inner wall of the mold sleeve in a press fit mode, so that the axial end of the mold core is limited; a die cavity matched with the square sleeve in shape is arranged in the die core; the locking screw is in threaded connection with the inner wall of the other end of the mounting hole, the end face of the locking screw abuts against the end face of the mold core, and the axial other end of the mold core is limited. The eccentric anti-skidding square sleeve forming die solves the technical problem that the die core part of the existing square sleeve forming die is large in size and high in production cost, and achieves the technical effects that the die core is small in size and low in production cost.

Description

Eccentric anti-skidding square sleeve forming die

Technical Field

The utility model belongs to the technical field of the technique with manpower drive's electric bicycle and specifically relates to an eccentric anti-skidding square sleeve forming die is related to.

Background

The electric bicycle is generally driven by two modes, one mode is driven only by electric power, and the other mode is driven by manpower or electric power, and for convenience of description, the electric bicycle is simply called as a dual-drive electric bicycle.

The existing dual-drive electric bicycle comprises a square sleeve which is used for connecting a chain wheel and a central shaft, and belongs to an important part in a manual driving system. The existing forming die comprises the existing die core and a die shell, wherein the die core is used as a core component directly stressed, the requirements on hardness, toughness and wear resistance of materials are high, high-quality alloy steel is generally adopted, so the manufacturing cost of the die core is far higher than that of other components, the die core is directly installed and fixed in the die shell, and the whole volume is larger due to the connected part, so the production cost of the die core is higher.

The present inventors have found at least the following problems in implementing the present embodiment:

the mold core part of the existing square sleeve forming mold has larger volume and higher production cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an eccentric antiskid square sleeve forming die, the mold core part volume ratio that has solved current square sleeve forming die is higher technical problem of manufacturing cost ratio.

The utility model discloses the scheme:

the utility model provides an eccentric anti-skid square sleeve forming die, which comprises a die shell, a die sleeve, a die core and a locking screw; the formwork is provided with a mounting hole; the die sleeve is embedded in the inner wall of one end part of the mounting hole, and the inner wall of the die sleeve is in a conical pipe shape; the outer wall of the mold core is matched with the inner wall of the mold sleeve in shape, and the outer wall of the mold core is fixed on the inner wall of the mold sleeve in a press-fitting manner, so that the axial end of the mold core is limited; a die cavity matched with the square sleeve in shape is arranged in the die core; locking screw threaded connection in the inner wall of another tip of mounting hole, and locking screw's terminal surface butt the terminal surface of mold core realizes spacing to the mold core axial other end.

Further, the axial inclination of the inner wall of the die sleeve is 4-6 degrees.

Further, the die sleeve is sequentially provided with an upper die sleeve, a middle die sleeve and a lower die sleeve; the mold core is sequentially provided with an upper mold core, a middle mold core and a lower mold core which correspond to the mold core.

Further, the die cavity comprises a body cavity and a boss cavity which are communicated; the upper mold core and the middle mold core correspond to the body cavity; the lower mold core corresponds to the boss cavity.

Furthermore, the inner wall of the die cavity is provided with an exhaust hole communicated with the outside.

Furthermore, the locking screw is provided with a punch hole; the punch hole is communicated with the die cavity.

Has the advantages that:

the utility model provides an eccentric antiskid square sleeve forming die, including mould shell, die sleeve, mold core and locking screw, wherein the mould shell is equipped with the mounting hole, and the die sleeve inlays the dress and is fixed in the inner wall of this mounting hole one end, and the outer wall of mold core and the inner wall of die sleeve are the taper pipe shape of looks adaptation simultaneously, and the mold core is fixed in the die sleeve inner wall through the pressure equipment and realizes that axial is one-way spacing, and simultaneously, the other end of mold core passes through the locking screw butt to it is two-way spacing to realize the axial of mold core.

Therefore, compared with the mode that the existing mold core is directly connected with the mold shell, the mold core is indirectly fixedly connected with the mold shell through being matched with the mold sleeve and the locking screw, the size of the mold core is reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a sectional view of an eccentric anti-slip square sleeve forming mold according to the present embodiment;

FIG. 2 is a top view of the eccentric anti-slip square sleeve forming mold according to the present embodiment;

FIG. 3 is a front view of the square sleeve provided in the present embodiment;

fig. 4 is a bottom view of the square sleeve provided in this embodiment.

Icon:

10-a mould shell;

20-die sleeve; 21-mounting a die sleeve; 22-middle die sleeve; 23-lower die sleeve;

30-a mold core; 31-upper mold core; 32-a middle mold core; 33-lower mold core;

40-a mold cavity; 41-body cavity; 42-boss cavity; 43-exhaust hole;

50-locking screws; 51-punch hole;

60-square sleeve; 61-a body; 62-boss.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The embodiment provides an eccentric anti-skid square sleeve forming die, which is shown in fig. 1 to 4 and comprises a die shell 10, a die sleeve 20, a die core 30 and a locking screw 50; the shuttering 10 is provided with a mounting hole; the die sleeve 20 is embedded in the inner wall of one end part of the mounting hole, and the inner wall of the die sleeve 20 is in a taper pipe shape; the outer wall of the mold core 30 is matched with the inner wall of the mold sleeve 20 in shape, and the outer wall of the mold core 30 is fixed on the inner wall of the mold sleeve 20 in a press-fitting manner, so that the axial end of the mold core 30 is limited; a die cavity 40 matched with the square sleeve 60 in shape is arranged in the die core 30; the locking screw 50 is in threaded connection with the inner wall of the other end of the mounting hole, and the end face of the locking screw 50 abuts against the end face of the mold core 30, so that the axial other end of the mold core 30 is limited.

Specifically, including mould shell 10, die sleeve 20, mold core 30 and locking screw 50, wherein mould shell 10 is equipped with the mounting hole, and die sleeve 20 inlays the dress and is fixed in the inner wall of this mounting hole one end, and the outer wall of mold core 30 and the inner wall of die sleeve 20 are the taper pipe shape of looks adaptation simultaneously, and mold core 30 is fixed in the inner wall of die sleeve 20 through the pressure equipment and realizes axial one-way spacing, and simultaneously, the other end of mold core 30 passes through locking screw 50 butt and fixes to the realization is to the axial two-way spacing of mold core 30.

Therefore, compared with the prior mode that the mold core 30 is directly connected with the mold shell 10, the mold core 30 is indirectly fixedly connected with the mold shell 10 through the matching of the mold sleeve 20 and the locking screw 50, the volume of the mold core 30 is reduced, and the production cost is reduced.

It should also be noted that: the mold core 30 is provided with a mold cavity 40 which is matched with the shape of the square sleeve 60, namely a body cavity 41 and a boss cavity 42 of the mold cavity 40 are respectively matched with the shapes of a body 61 and a boss 62 of the square sleeve 60.

In this embodiment, the inner wall of the die case 20 has an axial inclination of 4 to 6 degrees.

Illustratively, 4, 5, or 6 degrees are used; preferably, 5 degrees are used.

In this embodiment, the die sleeve 20 is sequentially provided with an upper die sleeve 21, a middle die sleeve 22 and a lower die sleeve 23; the mold core 30 is provided with an upper mold core 31, a middle mold core 32 and a lower mold core 33 corresponding to the mold core in sequence.

Specifically, the mold core 30 is divided into three mutually abutted and independent parts, and compared with the stress of the whole structure, the stress area of the single part is smaller, the stress of the single part is more uniform, and the structural tolerance is stronger and is not easy to damage.

In this embodiment, the mold cavity 40 includes a body cavity 41 and a boss cavity 42 in communication; the upper mold core 31 and the middle mold core 32 correspond to the body cavity 41; the lower mold core 33 corresponds to the boss cavity 42.

Specifically, the axial width of the body cavity 41 is relatively large, so that the body cavity is formed by the inner walls of the two mold cores 30, the contact area of the split structure is reduced, the tolerance of the body cavity 41 is increased, and the body cavity is not easily damaged.

In this embodiment, the inner wall of the mold cavity 40 is provided with a vent hole 43 communicating with the outside.

Specifically, the air pressure inside and outside the cavity 40 is kept balanced by providing the vent hole 43.

In this embodiment, the locking screw 50 is provided with a punch hole 51; the punch holes 51 communicate with the die cavity 40.

Specifically, the punch hole 51 is matched with a punch to punch the square sleeve 60 to form a center hole.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. An eccentric anti-skid square sleeve forming die is characterized by comprising a die shell (10), a die sleeve (20), a die core (30) and a locking screw (50);

the formwork (10) is provided with a mounting hole;

the die sleeve (20) is embedded in the inner wall of one end part of the mounting hole, and the inner wall of the die sleeve (20) is in a cone shape;

the outer wall of the mold core (30) is matched with the inner wall of the mold sleeve (20) in shape, and the outer wall of the mold core (30) is fixed on the inner wall of the mold sleeve (20) in a press-fitting manner, so that the axial end of the mold core (30) is limited; a die cavity (40) matched with the square sleeve (60) in shape is arranged in the die core (30);

locking screw (50) threaded connection in the inner wall of the other end of mounting hole, and the terminal surface butt of locking screw (50) the terminal surface of mold core (30) realizes spacing to the axial other end of mold core (30).

2. The eccentric anti-slip square sleeve forming die as claimed in claim 1, wherein the inclination of the inner wall of the die sleeve (20) in the axial direction is 4-6 degrees.

3. The eccentric anti-slip square sleeve forming die as claimed in claim 1 or 2, wherein the die sleeve (20) is provided with an upper die sleeve (21), a middle die sleeve (22) and a lower die sleeve (23) in sequence;

the mold core (30) is sequentially provided with an upper mold core (31), a middle mold core (32) and a lower mold core (33) which correspond to the mold core.

4. The eccentric anti-slip square sleeve forming die of claim 3, wherein the die cavity (40) comprises a body cavity (41) and a boss cavity (42) which are communicated with each other;

the upper mold core (31) and the middle mold core (32) correspond to the body cavity (41);

the lower mold core (33) corresponds to the boss cavity (42).

5. The eccentric anti-slip square sleeve forming die as claimed in claim 1, 2 or 4, wherein the inner wall of the die cavity (40) is provided with an exhaust hole (43) communicated with the outside.

6. The eccentric anti-slip square sleeve forming die of claim 1, 2 or 4, wherein the locking screw (50) is provided with a punch hole (51);

the punch hole (51) is communicated with the die cavity (40).

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