Suspension bushing forming die, suspension bushing and vehicle

Abstract

The present invention provides a suspension bushing forming mold, a suspension bushing and a vehicle, wherein the mold core of the suspension bushing forming mold has an expanding core provided on a lower mold plate and a positioning pin provided on an upper mold plate. The expanding core is made of spring steel and has a positioning hole for inserting the positioning pin. The inner tube of the suspension bushing can be sleeved on the outside of the expanding core, the positioning pin can be inserted into the positioning hole and squeeze the expanding core to expand radially, and the expanded core can abut against the inner wall of the inner tube after being expanded, and as the positioning pin is removed from the positioning hole, the expanding core can contract radially and reset. The suspension bushing forming mold described in the present invention can, after the inner tube is sleeved on the outside of the expanding core, insert the positioning pin into the expanding core and squeeze the expanding core to expand radially, so that the expanding core abuts against the inner wall of the inner tube, thereby enabling the expanding core to have a radial supporting force on the inner tube, thereby preventing the pressure generated during the injection process from squeezing the inner tube into deformation, thereby improving the production yield of the suspension bushing forming mold.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle component molds, and in particular to a suspension bushing forming mold. The present invention also relates to a suspension bushing made by using the suspension bushing forming mold, and a vehicle having the suspension bushing. Background Art

[0002] As a bidirectional vibration isolation element that connects and supports the powertrain, the suspension bushing's primary function is to secure and support the vehicle's powertrain, withstand the reciprocating inertial forces and torques generated by the powertrain, and isolate vibrations of the vehicle frame or body caused by powertrain excitation. Therefore, the structural performance of the suspension bushing has a significant impact on its effectiveness. Suspension bushings generally consist of an inner tube, an outer tube, and a rubber body connected between the inner and outer tubes. However, currently, during the production of suspension bushings, the inner tube often deforms due to the rubber injection pressure, resulting in substandard suspension bushing structures and low product yields. Summary of the Invention

[0003] In view of this, the present invention aims to provide a suspension bushing forming die to improve the production yield of the suspension bushing.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A suspension bushing forming die, wherein the die core of the suspension bushing die comprises an expansion core provided on a lower die plate and a positioning pin provided on an upper die plate;

[0006] The expansion core is made of spring steel and has a positioning hole for the positioning pin to be inserted;

[0007] The inner tube of the bushing can be sleeved on the outside of the expanding core, the positioning pin can be inserted into the positioning hole and squeeze the expanding core to expand radially. After expansion, the expanding core abuts against the inner wall of the inner tube, and as the positioning pin comes out of the positioning hole, the expanding core can radially shrink and reset.

[0008] Furthermore, a slit is provided on the expansion core, and the slit extends along the axial direction of the positioning hole.

[0009] Furthermore, the gaps are multiple and spaced apart along the circumference of the expansion core.

[0010] Furthermore, the gap includes a first gap and a second gap, the first gap extends to the end of one end of the expanding core, the second gap extends to the end of the other end of the expanding core, and the first gap and the second gap partially overlap in the axial direction of the expanding core.

[0011] Furthermore, the first slits and the second slits are alternately arranged along the circumference of the expansion core.

[0012] Furthermore, the positioning hole is a tapered hole, and the positioning pin has a tapered surface following the shape of the positioning hole.

[0013] Furthermore, a lower mounting seat is provided on the lower template, a protrusion is provided on the top of the lower mounting seat and is inserted into the positioning hole, and an annular protrusion is provided on the protrusion, and an annular groove is provided at the bottom of the expanding core, and the annular protrusion is clamped in the annular groove.

[0014] Furthermore, the lower mounting seat has an anti-rotation block, which can be inserted into the inner tube to limit the rotation of the inner tube.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The suspension bushing forming mold described in the present invention can be inserted into the expanding core through a positioning pin after the inner tube is sleeved on the outside of the expanding core, and the expanding core is squeezed to expand radially, so that the expanding core abuts against the inner wall of the inner tube. In this way, the expanding core can provide radial support force for the inner tube, which can prevent the pressure generated during the injection process from squeezing the inner tube into deformation, thereby improving the production yield of the suspension bushing.

[0017] Furthermore, providing a slit extending axially along the positioning hole in the core can facilitate radial expansion of the core. Providing multiple slits spaced circumferentially around the core further facilitates radial expansion. The slits, including a first slit and a second slit, can enhance uniform radial expansion at both ends of the core.

[0018] Furthermore, alternating the first and second slits along the circumference of the core further improves the uniformity of radial expansion across the core. The tapered positioning holes facilitate the insertion of the locating pins into the core. An anti-rotation block on the lower mounting seat limits the rotation of the inner tube, further improving the production yield of the suspension bushing.

[0019] Another object of the present invention is to provide a suspension bushing, which is made using the suspension bushing forming mold as described above.

[0020] The suspension bushing of the present invention is manufactured by adopting the suspension bushing forming mold as described above, and can have better quality and play a better role.

[0021] In addition, the present invention also provides a vehicle, in which the suspension bushing as described above is provided.

[0022] The vehicle according to the present invention can improve riding comfort by adopting the suspension bushing described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a diagram showing the assembly state of the suspension bushing forming die and the suspension bushing according to an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the mold core according to an embodiment of the present invention;

[0026] Figure 3 This is a structural schematic diagram of the upper mounting seat according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the upper mounting base according to an embodiment of the present invention from another perspective;

[0028] Figure 5 This is a schematic structural diagram of a positioning pin according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic structural diagram of the core expansion according to an embodiment of the present invention at a first viewing angle;

[0030] Figure 7 This is a schematic structural diagram of the core expansion according to an embodiment of the present invention at a second viewing angle;

[0031] Figure 8 Schematic diagram of the structure of the expansion core according to an embodiment of the present invention from a third viewing angle;

[0032] Figure 9 Schematic diagram of the structure of the lower mounting base according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Mold core; 2. Suspension bushing; 3. Pad; 4. Upper mold plate; 5. Middle plate; 6. Lower mold plate; 7. Lower mold mounting plate; 8. Upper mold mounting plate;

[0035] 101. Upper mounting seat; 102. Positioning pin; 103. Core expansion; 104. Lower mounting seat;

[0036] 1011, connection hole; 1012, injection hole; 1013, first extension plate; 1014, mounting hole; 1015, boss;

[0037] 1021. Installation part; 1022. Pin body part; 1023. Shoulder block;

[0038] 1031, first gap; 1032, second gap; 1033, annular groove; 1034, positioning hole;

[0039] 1041, protrusion; 10411, annular protrusion; 1042, anti-rotation block; 1043, second extension plate;

[0040] 201, inner tube; 202, rubber body; 203, outer tube. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms

[0043] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, these terms may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] This embodiment relates to a suspension bushing forming die having an expanding core 103 disposed on a lower die plate 6 and a positioning pin 102 disposed on an upper die plate 4. The expanding core 103 is made of spring steel and has a positioning hole 1034 for inserting the positioning pin 102. The inner tube 201 of the suspension bushing can be sleeved onto the expanding core 103. The positioning pin 102 can be inserted into the positioning hole 1034 and compress the expanding core 103 to expand radially. After expansion, the expanding core 103 abuts against the inner wall of the inner tube 201. As the positioning pin 102 exits the positioning hole 1034, the expanding core 103 can radially contract and return to its original position.

[0046] The suspension bushing forming mold of this embodiment can insert the expanding core 103 through the positioning pin 102 after the inner tube 201 is sleeved on the outside of the expanding core 103, and squeeze the expanding core 103 to expand radially, so that the expanding core 103 abuts against the inner wall of the inner tube 201. In this way, the expanding core 103 can provide radial support force for the inner tube 201, which can prevent the pressure generated during the injection process from squeezing the inner tube 201 into deformation, thereby improving the production yield of the suspension bushing.

[0047] Based on the above overall introduction, an exemplary structure of the suspension bushing forming mold of this embodiment is as follows: Figure 1 As shown in , it should be noted that the suspension bushing forming mold generally has multiple mold cores 1, Figure 1 Only one core 1 is shown in FIG. Moreover, for ease of understanding, Figure 1 The structure of the suspension bushing 2 is also schematically shown, which, from the inside out, comprises an inner tube 201, a rubber body 202, and an outer tube 203. The specific structure can be referred to in the prior art. Furthermore, similar to the prior art, the suspension bushing forming mold of this embodiment comprises, from top to bottom, 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. The specific structure can be referred to in the prior art. This embodiment mainly describes the structure of the mold core 1.

[0048] The structure of the mold core 1 in this embodiment is as follows Figure 2 As shown in , it includes an upper mounting seat 101 and a lower mounting seat 104. The positioning pin 102 is specifically arranged on the upper mounting seat 101, and the expansion core 103 is arranged on the lower mounting seat 104. Among them, the structure of the upper mounting seat 101 is as follows Figure 3 and Figure 4 As shown in FIG, it has a connection hole 1011 connected to the upper template 4, and a through-set mounting hole 1014, 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 mounting seat 101, and the first extension plates 1013 are arranged opposite each other.

[0049] The positioning pin 102 is specifically installed in the mounting hole 1014, and the structure of the positioning pin 102 is as follows: Figure 5 As shown in FIG, it comprises a mounting portion 1021 and a pin body portion 1022. A stop shoulder 1023 is formed on the mounting portion 1021 to abut against the boss 1015. As a preferred embodiment, the outer peripheral surface of the pin body portion 1022 of this embodiment is a tapered surface that follows the positioning hole 1034 to facilitate insertion into the expansion core 103.

[0050] The structural combination of the expansion core 103 of this embodiment Figures 6 to 8As shown in , it is generally cylindrical. As a preferred embodiment, the positioning hole 1034 is a tapered hole. Furthermore, in the initial state of the expanding core 103, the diameter of the tapered hole is smaller than the outer diameter of the pin body 1022, allowing the positioning pin 102 to squeeze the expanding core 103 to expand radially. Of course, the positioning hole 1034 can also be a circular hole in addition to a tapered hole. In this case, a guide surface is required at the end of the positioning pin 102 to guide the positioning pin 102 into the positioning hole 1034.

[0051] In order to facilitate the radial expansion of the core 103, Figure 7 and Figure 8 As shown in FIG, a slit is provided on the expanding core 103, extending axially along the positioning hole 1034. Furthermore, to further enhance the performance, the slits of this embodiment are provided at intervals along the circumference of the expanding core 103, and are preferably evenly distributed to enhance the uniformity of expansion of all parts of the expanding core 103.

[0052] As a preferred embodiment, Figure 4 As shown in , the gaps in this embodiment include a first gap 1031 and a second gap 1032, wherein the first gap 1031 extends to the end of one end of the expanding core 103, and the second gap 1032 extends to the end of the other end of the expanding core 103, and the first gap 1031 and the second gap 1032 partially overlap in the axial direction of the expanding core 103. This arrangement can improve the uniformity of radial expansion at both ends of the expanding core 103. In addition, to further improve the uniformity of expansion of various parts of the expanding core 103, the first gap 1031 and the second gap 1032 are arranged alternately along the circumference of the expanding core 103. In addition, to achieve the installation of the expanding core 103 on the lower template 6, as a specific embodiment, an annular groove 1033 is provided at the bottom of the expanding core 103.

[0053] The structure of the lower mounting base 104 of this embodiment is as follows Figure 9 As shown in FIG, a protrusion 1041 is provided on the top of the lower mounting seat 104 to be inserted into the positioning hole 1034. The protrusion 1041 is shaped like the positioning hole 1034. Furthermore, an annular protrusion 10411 is provided on the protrusion 1041, which is locked in the annular groove 1033. Of course, in addition to using the annular protrusion 10411 and the annular groove 1033 to achieve the installation of the expansion core 103, a slot can also be provided on the lower mounting seat 104, and an insert can be provided on the expansion core 103 to be inserted into the slot.

[0054] In addition, in order to further improve the production quality of the suspension bushing 2, Figure 9As shown in FIG, the lower mounting seat 104 is provided with an anti-rotation block 1042 that can be inserted into the inner tube 201 to restrict the rotation of the inner tube 201. Preferably, a plurality of anti-rotation blocks 1042 are provided, spaced apart around the protrusion 1041. Furthermore, two upwardly extending second extension plates 1043 are provided on the lower mounting seat 104. These second extension plates 1043 can abut against the first extension plate 1013 to form a through hole in the rubber body 202 of the suspension bushing 2.

[0055] When using the suspended bushing forming mold of this embodiment, the inner tube 201 is first positioned on the lower mounting seat 104, and then the mold is closed to allow the positioning pin 102 to penetrate the expanding core 103, squeezing the expanding core 103 to expand radially, thereby providing support for the inner tube 201 in the radial direction. This support force is greater than the injection pressure, thereby preventing the inner tube 201 from being deformed by the injection pressure and preventing it from being installed on the lower mounting seat 104. Moreover, after the mold is opened, as the positioning pin 102 is released from the positioning hole 1034, the expanding core 103 can be restored to its original position due to its own elasticity.

[0056] Therefore, the suspension bushing forming die of this embodiment utilizes an expanding core 103 made of spring steel and provides slits within the expanding core 103. This allows the expanding core 103 to automatically contract after radial expansion, leveraging its inherent material properties and structural capabilities. This results in a simple structure, ease of processing, and reduced manufacturing costs, as well as ease of subsequent maintenance of the expanding core 103. Existing expanding core structures that utilize mechanical mechanisms for contraction require high precision, resulting in inconvenient processing and high processing and maintenance costs. The expanding core 103 of this embodiment, however, does not suffer from these drawbacks and therefore offers superior performance.

[0057] In addition, this embodiment also relates to a suspension bushing 2, which is made using the suspension bushing forming mold described above.

[0058] The suspension bushing 2 of this embodiment is manufactured by adopting the suspension bushing forming mold as described above, and can have better quality and play a better role.

[0059] In addition, this embodiment also relates to a vehicle, in which the suspension bushing 2 as described above is provided.

[0060] The vehicle of this embodiment adopts the suspension bushing 2 as described above, and thus the suspension bushing 2 can effectively function and improve the ride comfort.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A suspension bushing forming die, characterized in that: The core (1) of the suspended bushing forming mold has an expansion core (103) provided on the lower mold plate (6) and a positioning pin (102) provided on the upper mold plate (4); The expansion core (103) is made of spring steel and has a positioning hole (1034) for the positioning pin (102) to be inserted; The inner tube (201) of the suspension bushing can be sleeved on the outside of the expansion core (103), the positioning pin (102) can be inserted into the positioning hole (1034) and squeeze the expansion core (103) to expand radially, and the expanded expansion core (103) can abut against the inner wall of the inner tube (201), and as the positioning pin (102) is removed from the positioning hole (1034), the expansion core (103) can contract radially and reset; The expansion core (103) is provided with a slit, and the slit extends along the axial direction of the positioning hole (1034); The slit comprises a first slit (1031) and a second slit (1032), wherein the first slit (1031) extends to the end of one end of the expanding core (103), and the second slit (1032) extends to the end of the other end of the expanding core (103), and the first slit (1031) and the second slit (1032) partially overlap in the axial direction of the expanding core (103); The lower template (6) is provided with a lower mounting seat (104), and the lower mounting seat (104) has an anti-rotation block (1042). The anti-rotation block (1042) can be inserted into the inner tube (201) to limit the rotation of the inner tube (201).

2. The suspension bushing forming die according to claim 1, characterized in that: The gaps are multiple and spaced apart along the circumference of the expansion core (103).

3. The suspension bushing forming die according to claim 1, characterized in that: The first slits (1031) and the second slits (1032) are alternately arranged along the circumference of the expansion core (103).

4. The suspension bushing forming die according to claim 1, characterized in that: The positioning hole (1034) is a tapered hole, and the positioning pin (102) has a tapered surface that follows the shape of the positioning hole (1034).

5. The suspension bushing forming die according to any one of claims 1 to 4, characterized in that: The top of the lower mounting seat (104) is provided with a protrusion (1041) inserted into the positioning hole (1034), and an annular protrusion (10411) is provided on the protrusion (1041). The bottom of the expansion core (103) is provided with an annular groove (1033), and the annular protrusion (10411) is clamped in the annular groove (1033).

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