CN116039003A

CN116039003A - Suspension bush forming die, suspension bush and vehicle

Info

Publication number: CN116039003A
Application number: CN202211510857.9A
Authority: CN
Inventors: 陈安; 白克飞; 石伟; 李宏亮; 种黎明; 陈博
Original assignee: Nuobo Rubber Production Co Ltd
Current assignee: Nuobo Rubber Production Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-02

Abstract

The invention provides a suspension bushing forming die, a suspension bushing and a vehicle. The expansion core is made of spring steel and is provided with a positioning hole for inserting a positioning pin. The inner pipe of the suspension bushing can be sleeved outside the expansion core, the positioning pin can be inserted into the positioning hole and extrude the expansion core to radially expand, the expanded expansion core can be abutted with the inner wall of the inner pipe and deviate from the positioning hole along with the positioning pin, and the expansion core can radially shrink and reset. The forming die for the suspension bush can be inserted into the expansion core through the locating pin after the inner pipe is sleeved outside the expansion core, and the expansion core is extruded to radially expand, so that the expansion core is abutted against the inner wall of the inner pipe, the expansion core can have radial supporting force on the inner pipe, the pressure generated in the glue injection process can be prevented, the inner pipe is extruded to deform, and the production yield of the forming die for the suspension bush can be improved.

Description

Suspension bush forming die, suspension bush and vehicle

Technical Field

The invention relates to the technical field of vehicle part molds, in particular to a suspension bushing forming mold, and simultaneously relates to a suspension bushing manufactured by adopting the suspension bushing forming mold and a vehicle with the suspension bushing.

Background

The suspension bushing is used as a bidirectional vibration isolation element for connecting and supporting the power assembly, and is mainly used for fixing and supporting the power assembly of the automobile, bearing the reciprocating inertial force and moment generated by the power assembly, isolating the vibration of the frame or the automobile body caused by the excitation of the power assembly and the like. Thus, the structural properties of the suspension liner have an important influence on the functioning thereof, and the suspension liner generally includes an inner tube, an outer tube, and a rubber body connected between the inner tube and the outer tube. However, at present, in the production process of the suspension bush, the problem that the inner tube is deformed due to the rubber injection pressure generally exists, so that the structure of the suspension bush is disqualified, and the product yield is low.

Disclosure of Invention

In view of the above, the present invention is directed to a suspension liner forming mold to improve the production yield of the suspension liner.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

the mold core of the suspension bushing mold is provided with an expansion core arranged on a lower mold plate and a positioning pin arranged on an upper mold plate;

the expansion core is made of spring steel and is provided with a positioning hole for inserting the positioning pin;

the inner pipe of bush can be overlapped and establish the core outside that rises, the locating pin can insert the locating hole, and extrudees rise the radial expansion of core, after the expansion rise the core with the inner wall butt of inner pipe, and follow the locating pin deviate from the locating hole, rise the core and can radially shrink the reset.

Further, a gap is formed in the expansion core, and the gap extends along the axial direction of the positioning hole.

Further, the gaps are distributed at intervals along the circumferential direction of the expanding core.

Further, the gap comprises a first gap and a second gap, the first gap extends to the end part of one end of the expansion core, the second gap extends to the end part of the other end of the expansion core, and the first gap and the second gap are partially overlapped in the axial direction of the expansion core.

Further, the first slits and the second slits are alternately arranged along the circumferential direction of the expansion core.

Further, the positioning hole is a conical hole, and the positioning pin is provided with a conical surface which follows the positioning hole.

Further, a lower mounting seat is arranged on the lower template, a protruding block inserted into the positioning hole is arranged at the top of the lower mounting seat, an annular protrusion is arranged on the protruding block, an annular groove is arranged at the bottom of the expansion core, and the annular protrusion is clamped in the annular groove.

Further, the lower mount has an anti-rotation block that can be inserted into the inner tube to limit rotation of the inner tube.

Compared with the prior art, the invention has the following advantages:

the forming die for the suspension bush can be inserted into the expansion core through the locating pin after the inner pipe is sleeved outside the expansion core, and the expansion core is extruded to radially expand, so that the expansion core is abutted against the inner wall of the inner pipe, the expansion core can have radial supporting force on the inner pipe, the pressure generated in the glue injection process can be prevented, the inner pipe is extruded to deform, and the production yield of the suspension bush can be improved.

In addition, the gap extending along the axial direction of the positioning hole is arranged on the expansion core, so that radial expansion of the expansion core can be facilitated. The gaps are arranged in a plurality of gaps which are distributed along the circumferential direction of the expansion core at intervals, so that radial expansion of the expansion core can be further facilitated. The gap comprises a first gap and a second gap, so that the uniformity of radial expansion of the two ends of the expansion core can be improved.

In addition, the first gaps and the second gaps are alternately arranged along the circumferential direction of the expansion core, so that the uniformity of radial expansion of each part of the expansion core can be further improved. The locating hole is the bell mouth, is convenient for the locating pin to insert in the core that rises. Through set up anti-rotation piece on lower mount pad, can restrict the inner tube rotation to can further improve the production yield of suspension bush.

Another object of the present invention is to propose a suspension bush which is made using a suspension bush forming die as described above.

The suspension bush is manufactured by adopting the suspension bush forming die, has good quality and can play a good role.

In addition, the invention also provides a vehicle, wherein the suspension bushing is arranged in the vehicle.

The vehicle of the present invention can improve riding comfort by adopting the suspension bush as described above.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is an assembled state diagram of a suspension liner forming mold and a suspension liner according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a mold core according to an embodiment of the present invention;

FIG. 3 is a schematic view of an upper mounting base according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the upper mounting base according to the embodiment of the present invention in another view;

FIG. 5 is a schematic view of a positioning pin according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an expanding core according to an embodiment of the present invention at a first view angle;

FIG. 7 is a schematic structural diagram of an expanding core according to an embodiment of the present invention at a second view angle;

FIG. 8 is a schematic structural view of an expanding core according to an embodiment of the present invention at a third view angle;

fig. 9 is a schematic structural view of a lower mounting seat according to an embodiment of the invention.

Reference numerals illustrate:

1. a mold core; 2. a suspension bushing; 3. a backing plate; 4. an upper template; 5. a middle plate; 6. a lower template; 7. a lower die mounting plate; 8. an upper die mounting plate;

101. an upper mounting seat; 102. a positioning pin; 103. expanding the core; 104. a lower mounting seat;

1011. a connection hole; 1012. an injection hole; 1013. a first extension plate; 1014. a mounting hole; 1015. a boss;

1021. a mounting portion; 1022. a pin body portion; 1023. a shoulder;

1031. a first slit; 1032. a second slit; 1033. an annular groove; 1034. positioning holes;

1041. a bump; 10411. an annular protrusion; 1042. an anti-rotation block; 1043. a second extension plate;

201. an inner tube; 202. a rubber body; 203. an outer tube.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the term

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in combination with specific cases.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

The present embodiment relates to a suspension bush forming die, which is provided with an expansion core 103 arranged on a lower die plate 6 and a positioning pin 102 arranged on an upper die plate 4. The expansion core 103 is made of spring steel and is provided with a positioning hole 1034 for inserting the positioning pin 102. The inner pipe 201 of the suspension bushing can be sleeved outside the expansion core 103, the positioning pin 102 can be inserted into the positioning hole 1034, the expansion core 103 is extruded to radially expand, the expanded expansion core 103 is abutted with the inner wall of the inner pipe 201, and the expansion core 103 can radially shrink and reset along with the release of the positioning pin 102 from the positioning hole 1034.

The suspension bushing forming mold of this embodiment can insert the expansion core 103 through the positioning pin 102 after the inner tube 201 is sleeved outside the expansion core 103, and press the expansion core 103 to radially expand, so that the expansion core 103 is abutted against the inner wall of the inner tube 201, thereby enabling the expansion core 103 to have a radial supporting force on the inner tube 201, preventing the inner tube 201 from being deformed due to pressure generated in the glue injection process, and improving the production yield of the suspension bushing.

Based on the above general description, an exemplary structure of the suspension bush forming mold of the present embodiment is shown in fig. 1, wherein it should be noted that the suspension bush forming mold generally has a plurality of cores 1, and only one core 1 is schematically shown in fig. 1. Moreover, for ease of understanding, the structure of the suspension liner 2 is also illustrated in fig. 1, which includes, from inside to outside, an inner tube 201, a rubber body 202, and an outer tube 203, with reference to the prior art for specific structure. In addition, as in the prior art, the suspension bush forming mold of this embodiment includes an upper mold mounting plate 8, a backing plate 3, an upper mold plate 4, a middle plate 5, a lower mold plate 6 and a lower mold mounting plate 7 from top to bottom in this order, and the specific structure thereof is described with reference to the prior art, and this embodiment mainly describes the structure of the mold core 1.

The mold core 1 of the present embodiment has a structure as shown in fig. 2, which includes an upper mount 101 and a lower mount 104, the above-mentioned positioning pin 102 is specifically disposed on the upper mount 101, and the expansion core 103 is disposed on the lower mount 104. The upper mount 101 has a structure as shown in fig. 3 and 4, which has a connection hole 1011 connected to the upper die plate 4, and has a mounting hole 1014 provided therethrough, and a boss 1015 is provided in the mounting hole 1014. In addition, two injection holes 1012 and a first extension plate 1013 extending downward are provided on the upper mount 101, and the first extension plate 1013 is two oppositely arranged.

The above-mentioned positioning pin 102 is specifically mounted in the mounting hole 1014, and the positioning pin 102 is structured as shown in fig. 5, which has a mounting portion 1021, and a pin body portion 1022, and a shoulder 1023 abutting on the boss 1015 is formed on the mounting portion 1021. As a preferred embodiment, the outer circumferential surface of the pin body 1022 of the present embodiment is a tapered surface that follows the positioning hole 1034, so as to facilitate insertion into the expansion core 103.

The structure of the expanding core 103 of this embodiment is shown in fig. 6 to 8, which is cylindrical as a whole, and the positioning hole 1034 is a tapered hole as a preferred embodiment. And, in the initial state of the expansion core 103, the diameter of the tapered hole is smaller than the outer diameter of the pin body portion 1022, so that the positioning pin 102 can press the expansion core 103 to expand radially. Of course, instead of the positioning hole 1034 being a tapered hole, it is also possible to use a circular hole, and in this case, a guide surface needs to be provided at the end of the positioning pin 102 to guide the insertion of the positioning pin 102 into the positioning hole 1034.

To facilitate radial expansion of the expander core 103, as shown in fig. 7 and 8, a slit is provided in the expander core 103, the slit extending in the axial direction of the positioning hole 1034. In addition, in order to further improve the use effect, the gaps in this embodiment are a plurality of gaps distributed at intervals along the circumferential direction of the expansion core 103, and are preferably uniformly distributed, so as to improve the uniformity of expansion of each part of the expansion core 103.

As a preferred embodiment, as shown in fig. 4, the slit of the present embodiment includes a first slit 1031 and a second slit 1032, wherein the first slit 1031 extends to an end of one end of the tension core 103, the second slit 1032 extends to an end of the other end of the tension core 103, and the first slit 1031 and the second slit 1032 partially overlap in the axial direction of the tension core 103. By this arrangement, the uniformity of radial expansion of the two ends of the expansion core 103 can be improved. In addition, to further improve the uniformity of expansion of each portion of the expansion core 103, the first slits 1031 and the second slits 1032 are alternately arranged along the circumferential direction of the expansion core 103. Furthermore, in order to achieve the installation of the expansion core 103 on the lower die plate 6, as a specific embodiment, the bottom of the expansion core 103 is provided with an annular groove 1033.

The lower mounting base 104 of this embodiment is shown in fig. 9, and has a bump 1041 inserted into the positioning hole 1034 at the top, and the bump 1041 follows the positioning hole 1034. The projection 1041 is provided with an annular projection 10411, and the annular projection 10411 is engaged with the annular groove 1033. Of course, instead of using the annular protrusion 10411 and the annular groove 1033 to implement the installation of the expansion core 103, a slot may be provided on the lower mounting base 104, and an insert block inserted into the slot may be provided on the expansion core 103.

In addition, to further improve the production quality of the suspension bush 2, still as shown in fig. 9, there is an anti-rotation block 1042 in the lower mount 104, which anti-rotation block 1042 can be inserted into the inner tube 201 to limit the rotation of the inner tube 201. The anti-rotation block 1042 is preferably a plurality of anti-rotation blocks disposed around the protrusion 1041 at intervals. Further, two second extension plates 1043 extending upward are provided on the lower mount 104, and the second extension plates 1043 can abut against the first extension plates 1013 to form through holes penetrating in the rubber body 202 of the suspension bush 2.

In the suspension bushing forming mold of this embodiment, when in use, the inner tube 201 is positioned on the lower mounting seat 104, and then the mold clamping action is performed, so that the positioning pin 102 is inserted into the expansion core 103, the expansion core 103 is extruded to radially expand, and the inner tube 201 is supported in the radial direction, and the supporting force is larger than the injection pressure, so that the inner tube 201 can be prevented from being deformed by the injection pressure, and the mounting of the inner tube 201 on the lower mounting seat 104 is not affected. After the die is opened, the expanding core 103 can be reset under the self elastic action along with the release of the positioning pin 102 from the positioning hole 1034.

Therefore, in the suspension bushing forming mold of this embodiment, by adopting the expansion core 103 made of spring steel and providing the gap on the expansion core 103, the expansion core 103 can automatically shrink after radial expansion by utilizing the material characteristics and structural properties of itself, the structure is simple, the processing is convenient, the manufacturing cost can be reduced, and the maintenance of the expansion core 103 in the later stage is also convenient. The existing expanding core structure which is contracted by a mechanical mechanism needs to be high in matching precision, and has the defects of inconvenient processing and high processing cost and later maintenance cost. The expanding core 103 of the present embodiment does not have such a disadvantage, and thus has a better use effect.

In addition, the present embodiment also relates to a suspension bush 2, and the suspension bush 2 is manufactured using the suspension bush forming die as described above.

The suspension bush 2 of the present embodiment can have a good quality and can exert a good effect by using the suspension bush molding die as described above.

In addition, the present embodiment also relates to a vehicle in which the suspension bush 2 as described above is provided.

In the vehicle of the present embodiment, the suspension bush 2 as described above is used, so that the suspension bush 2 plays a good role, and thus the riding comfort can be improved.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A suspension bush forming die which characterized in that:

the mold core (1) of the suspension bushing forming mold is provided with an expansion core (103) arranged on the lower template (6) and a positioning pin (102) arranged on the upper template (4);

the expanding core (103) is made of spring steel and is provided with a positioning hole (1034) for inserting the positioning pin (102);

the inner pipe (201) of the suspension bushing can be sleeved outside the expansion core (103), the positioning pin (102) can be inserted into the positioning hole (1034) and extruded to radially expand the expansion core (103), the expanded expansion core (103) can be abutted with the inner wall of the inner pipe (201) and can be separated from the positioning hole (1034) along with the positioning pin (102), and the expansion core (103) can radially shrink and reset.

2. The suspension liner forming die of claim 1, wherein:

and a gap is formed on the expansion core (103) and extends along the axial direction of the positioning hole (1034).

3. The suspension liner forming die of claim 2, wherein:

the gaps are a plurality of gaps distributed at intervals along the circumferential direction of the expanding core (103).

4. The suspension liner forming die of claim 3, wherein:

the slits include a first slit (1031) and a second slit (1032), the first slit (1031) extends to an end of one end of the tension core (103), the second slit (1032) extends to an end of the other end of the tension core (103), and the first slit (1031) and the second slit (1032) partially overlap in an axial direction of the tension core (103).

5. The suspension liner forming die of claim 4, wherein:

the first slits (1031) and the second slits (1032) are alternately arranged along the circumferential direction of the tension core (103).

6. The suspension liner forming die of claim 1, wherein:

the locating hole (1034) is a conical hole, and the locating pin (102) is provided with a conical surface which follows the locating hole (1034).

7. The suspension liner forming mold according to any one of claims 1 to 6, wherein:

the lower die plate (6) is provided with a lower mounting seat (104), the top of the lower mounting seat (104) is provided with a protruding block (1041) which is inserted into the positioning hole (1034), the protruding block (1041) is provided with an annular protrusion (10411), the bottom of the expansion core (103) is provided with an annular groove (1033), and the annular protrusion (10411) is clamped and arranged in the annular groove (1033).

8. The suspension liner forming die of claim 7, wherein:

the lower mount (104) has an anti-rotation block (1042), which is insertable into the inner tube (201) to limit rotation of the inner tube (201).

9. A suspension liner characterized by:

the suspension bush (2) is manufactured using the suspension bush forming die according to any one of claims 1 to 8.

10. A vehicle, characterized in that:

the suspension bushing (2) of claim 9 is provided in the vehicle.