CN214820125U - Waistband type air spring air bag vulcanization mold - Google Patents

Abstract

The utility model belongs to the technical field of air spring gasbag production, concretely relates to waistband formula air spring gasbag vulcanization mould utensil. The belt type air spring air bag vulcanization mold comprises a mold body, a diaphragm, an upper pressure ring and a lower pressure ring; the die body comprises an upper die, a middle die and a lower die which are sequentially connected from top to bottom, and a vulcanization cavity is formed among the upper die, the middle die and the lower die; the diaphragm is arranged in the vulcanizing cavity, and a forming cavity is formed between the diaphragm and the cavity wall of the vulcanizing cavity; the upper pressing ring is clamped between the upper port of the diaphragm and the upper die, and one end of the upper pressing ring extends into the forming cavity to support the diaphragm corresponding to the upper seam allowance forming part; the lower pressing ring is clamped between the lower port of the diaphragm and the lower die, and one end of the lower pressing ring extends into the forming cavity to support the diaphragm corresponding to the lower seam allowance forming part. The utility model discloses make waistband formula air spring gasbag vulcanization mould utensil all form the airtight shaping space of rigidity in the last bead of gasbag shaping portion and bead shaping portion down, solved the uncontrollable problem of bead size of gasbag.

Description

Waistband type air spring air bag vulcanization mold

Technical Field

The utility model belongs to the technical field of air spring gasbag production, concretely relates to waistband formula air spring gasbag vulcanization mould utensil.

Background

At present, air spring airbags for railway vehicles are mainly divided into three major categories, namely large-bellow type airbags, small-bellow type airbags and waistband type airbags; the waistband type air spring air bag can limit the expansion degree of the appearance of the air bag while ensuring the bearing capacity of the air spring, has good sealing property and vertical rigidity, and ensures the running stability of a vehicle.

Referring to fig. 1, the structure of the belt-type air spring bag 1 includes an upper sub-port 101, a lower sub-port 102, and a belt portion 103. The waistband type air spring air bag 1 is mainly composed of an outer glue layer, an inner glue layer, a cord fabric layer, a seam allowance steel wire ring and a waistband steel wire ring. Wherein, the inner glue layer mainly plays a role in sealing; the outer rubber layer is mainly used for protecting the cord fabric layer from being corroded by the external environment; the cord fabric layer is a stress layer and determines the strength and the performance of the capsule; the bead ring is enveloped in an upper bead 101 and a lower bead 102 of the air bag respectively, and the upper bead 101 and the lower bead 102 of the air bag are mainly used for ensuring the matching of the belt type air spring air bag 1 with the upper cover, the rubber pile and the supporting seat; the waistband steel wire ring is enveloped in the waistband part 103 of the airbag and is mainly used for limiting the change of the external dimension of the airbag.

The manufacturing process of the belt type air spring air bag 1 comprises a preforming process and a vulcanization forming process. The preforming process is to sequentially attach the inner rubber layer, the cord fabric layer and the outer rubber layer from inside to outside, wherein the bead rings are buckled at the ends of the cord fabric layer at the upper bead 101 and the lower bead 103 respectively, and the waistband bead rings are placed between the outer rubber layer and the cord fabric layer at the waistband 103 to form a blank; and the vulcanization molding process comprises the steps of filling the blank into a vulcanization mold, inflating and molding, filling hot water for vulcanization after completely laminating the film, emptying hot water after vulcanization, opening the mold and taking out the belt-type air spring airbag 1 after vulcanization molding.

In the vulcanization molding process, the size control of the seam allowance (namely the upper seam allowance 101 and the lower seam allowance 102) of the air bag is difficult, the quality problem of seam allowance size overrun is easy to occur, the air bag is poorly matched with the upper cover, the rubber stack and the supporting seat, the risk of air leakage exists in the actual use of the belt type air spring, and the product percent of pass is seriously influenced. The main reasons for the uncontrollable size of the seam allowance are: the air bag vulcanization process is not controlled by a pressure ring, the shape of the seam allowance is vulcanized and formed only by the extrusion force of the mold and the diaphragm, and the expansion extrusion of the diaphragm influences the forming space of the seam allowance, so that the size of the seam allowance is uncontrollable; or the air bag vulcanization process is controlled by the pressure ring, but the pressure ring cannot be positioned, and the pressure ring is deflected or inclined, so that the size of the seam allowance is uncontrollable.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the correlation technique, the utility model provides a waistband formula air spring gasbag vulcanization mould utensil to solve the uncontrollable problem of rim of a mouth size of waistband formula air spring gasbag, avoid waistband formula air spring to have the gas leakage risk in the in-service use, promote the product percent of pass.

The utility model provides a waistband formula air spring gasbag vulcanization mould utensil, include:

the mold body comprises an upper mold, a middle mold and a lower mold which are sequentially connected from top to bottom, and a vulcanization cavity is formed among the upper mold, the middle mold and the lower mold;

the diaphragm is arranged in the vulcanizing cavity, and a forming cavity is formed between the diaphragm and the cavity wall of the vulcanizing cavity;

the upper pressing ring is clamped between the upper port of the diaphragm and the upper die, and one end of the upper pressing ring extends into the forming cavity and is used for supporting the diaphragm corresponding to the upper sub-port forming part of the forming cavity;

and the lower pressing ring is clamped between the lower port of the diaphragm and the lower die, and one end of the lower pressing ring extends into the forming cavity and is used for supporting the diaphragm corresponding to the lower seam allowance forming part of the forming cavity.

This technical scheme makes waistband formula air spring gasbag vulcanization mould all form the airtight shaping space of rigidity in last bead mouth shaping portion and the bead mouth shaping portion down of gasbag through the setting of last clamping ring and lower clamping ring, has solved the bead mouth shape that only relies on the extrusion force vulcanization shaping gasbag of mould and diaphragm and has leaded to the uncontrollable problem of bead mouth size of gasbag.

In some embodiments, the vulcanization mold for the belt type air spring air bag further comprises an upper clamping ring, the upper clamping ring is located in the vulcanization cavity and connected with the upper mold, the upper clamping ring is provided with a flanging, and one end, far away from the molding cavity, of the upper pressing ring is clamped between the flanging and the upper mold. This technical scheme is through setting up the turn-ups on last clamp ring, has realized the location of last clamping ring, has solved vulcanization in-process clamping ring can not fix a position, the clamping ring appears askewly or the slope and leads to the uncontrollable problem of last bead mouth size of gasbag.

In some embodiments, the vulcanization mold for the belt type air spring air bag further comprises an upper chuck, the upper chuck is located in the vulcanization cavity and connected with the upper clamping ring, the upper chuck is provided with a first clamping portion, and the upper port of the diaphragm is clamped between the first clamping portion and the upper clamping ring. This technical scheme has realized the centre gripping of the last port of diaphragm and has fixed through the setting of first clamping part.

In some embodiments, the lower die is provided with a first groove, and the lower pressing ring is provided with a flange matched with the first groove. This technical scheme sets up through the matching of recess one on the lower mould and the flange on the lower clamping ring, has realized the location of clamping ring down, has solved among the vulcanization process clamping ring can not fix a position, clamping ring appear askew or slope and lead to the uncontrollable problem of lower rim of a river size of gasbag.

In some embodiments, the belt type air spring air bag vulcanization mold further comprises a lower steel ring and a lower chuck, the lower steel ring is located in the vulcanization cavity and connected with the lower mold, and the lower chuck is located in the vulcanization cavity and connected with the lower steel ring; the lower chuck is provided with a second clamping part, and the lower port of the diaphragm is clamped between the second clamping part and the lower steel ring. This technical scheme has realized the centre gripping of the lower port of diaphragm and has fixed through the setting of second clamping part.

In some embodiments, the upper portion of the middle mold is provided with a first boss, and the upper mold is provided with a first clamping groove adapted to the first boss. According to the technical scheme, the middle die and the upper die of the belt type air spring air bag vulcanization die are matched and positioned.

In some embodiments, the lower part of the middle mold is provided with a second boss, and the lower mold is provided with a second clamping groove matched with the second boss. According to the technical scheme, the middle die and the lower die of the belt type air spring air bag vulcanization die are matched and positioned.

In some embodiments, a belt forming part is arranged at the joint of the middle die and the lower die in the forming cavity. The technical scheme realizes the vulcanization molding structure arrangement of the waistband part of the waistband type air spring air bag.

Based on above-mentioned technical scheme, the embodiment of the utility model provides a waistband formula air spring gasbag vulcanization mould has solved the uncontrollable problem of rim of a mouth size of gasbag, can the effective control gasbag rim of a mouth size, guarantees the rim of a mouth of gasbag and upper cover, the rubber of waistband formula air spring and closely cooperate of bearing, avoids waistband formula air spring to have the gas leakage risk in the in-service use, promotes the product percent of pass.

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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a cross-sectional view of a girdle type air spring air bag according to the present invention;

fig. 2 is a schematic structural view of a curing mold for a belt-type air spring bladder according to a first embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic structural view of a vulcanization mold for a belt-type air spring bladder according to a second embodiment of the present invention;

fig. 5 is a partially enlarged view of fig. 4.

In the figure:

1. a belt air spring bladder; 101. feeding a seam allowance; 102. a lower seam allowance; 103. a waistband part; 2. a mold body; 21. an upper die; 211. a first card slot; 22. a middle mold; 221. a first boss; 222. a second boss; 23. a lower die; 231. a first groove; 232. a second card slot; 3. a diaphragm; 31. an upper port; 32. a lower port; 4. pressing a ring; 5. a lower pressure ring; 51. a flange; 6. an upper clamping ring; 61. flanging; 7. an upper chuck; 71. a first clamping portion; 8. a steel ring is arranged; 81. a second groove; 9. a lower chuck; 91. a second clamping portion; 10. a vulcanization chamber; 11. a molding cavity; 111. an upper seam allowance forming part; 112. a lower seam allowance forming part; 113. a waistband forming part.

Detailed Description

The technical solutions in 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. It is obvious that the described embodiments are only some, not all embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 2, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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.

The utility model provides a waistband formula air spring gasbag belongs to the product of axisymmetric structure, for the structure of the waistband formula air spring gasbag vulcanization mould of the easy clear show, the structure of waistband formula air spring gasbag and waistband formula air spring gasbag vulcanization mould is shown with the form of half section diagram in fig. 1-5.

The first embodiment is as follows:

as shown in fig. 1-3, the vulcanization mold for the belt type air spring air bag comprises a mold body 2, a diaphragm 3, an upper pressing ring 4 and a lower pressing ring 5. The mold body 2 comprises an upper mold 21, a middle mold 22 and a lower mold 23 which are connected in sequence from top to bottom, and a vulcanization cavity 10 is formed among the upper mold 21, the middle mold 22 and the lower mold 23. The diaphragm 3 is arranged in the vulcanization chamber 10 and forms a molding cavity 11 with the wall of the vulcanization chamber 10. The upper pressing ring 4 is sandwiched between the upper port 31 of the diaphragm 3 and the upper die 21, and one end of the upper pressing ring 4 extends into the molding cavity 11 to support the diaphragm 3 corresponding to the upper seam allowance molding part 111 of the molding cavity 11. The lower pressing ring 5 is clamped between the lower port 32 of the diaphragm 3 and the lower die 23, and one end of the lower pressing ring 5 extends into the molding cavity 11 to support the diaphragm 3 corresponding to the lower seam allowance molding part 112 of the molding cavity 11.

Further, the upper pressing ring 4 and the lower pressing ring 5 both extend into the molding cavity 11 and respectively correspond to the diaphragm 3 corresponding to the upper bead molding part 111 and the diaphragm 3 corresponding to the lower bead molding part 112 of the molding cavity of the supporting vulcanization mold, so that the upper bead molding part 111 and the lower bead molding part 112 of the belt-type air spring airbag 1 both form a rigid sealed molding space. Further, the size and shape of the upper sub-opening 101 of the airbag are mainly ensured by the upper die 21 and the upper press ring 4, and the size and shape of the lower sub-opening 102 of the airbag are mainly ensured by the lower die 23 and the lower press ring 5.

In the above exemplary embodiment, by the arrangement of the upper pressing ring 4 and the lower pressing ring 5, the belt type air spring air bag vulcanization mold forms rigid closed molding spaces in the upper bead molding part 111 and the lower bead molding part 112 of the air bag, the stretching and extrusion of the diaphragm 3 cannot affect the molding spaces of the upper bead 101 and the lower bead 102 of the air bag, the problem that the bead size of the air bag is uncontrollable due to the fact that the bead shape of the air bag is vulcanized and molded only by the extrusion force of the mold and the diaphragm 3 is solved, and the size and the shape of the upper bead 101 and the lower bead 102 are effectively ensured.

In some embodiments, the belted air spring bladder vulcanization mold further includes an upper clamp ring 6. The upper clamping ring 6 is positioned in the vulcanization cavity 10 and is connected with the upper die 21; the upper clamping ring 6 is provided with a flanging 61, and one end of the upper clamping ring 4, which is far away from the forming cavity 11, is clamped between the flanging 61 and the upper die 21.

Further, the upper pressing ring 4 is sleeved on the outer wall of the upper clamping ring 6, and the lower surface of the end of the upper pressing ring 4 away from the forming cavity 11 is pressed on the flange 61, that is, the flange 61 supports the upper pressing ring 4 and axially positions the upper pressing ring 4, so that the end of the upper pressing ring 4 away from the forming cavity 11 is stably clamped between the flange 61 of the upper clamping ring 6 and the upper die 21.

According to the illustrative embodiment, the flanging 61 is arranged on the upper clamping ring 6, so that the upper pressing ring 4 is positioned, and the problem that the size of the upper opening 101 of the air bag cannot be controlled due to the fact that the pressing ring cannot be positioned and is inclined or askew in the vulcanization process is solved.

In some embodiments, the belted air spring bladder vulcanization mold further comprises an upper chuck 7. The upper chuck 7 is positioned in the vulcanizing cavity 10 and is connected with the upper clamping ring 6; the upper chuck 7 is provided with a first clamping portion 71, and the upper port 31 of the diaphragm 3 is clamped between the first clamping portion 71 and the upper clamp ring 6. This exemplary embodiment achieves the clamping fixation of the upper port 31 of the diaphragm 3 by the provision of the first clamping portion 71.

In some embodiments, the lower mold 23 is provided with a first groove 231, and the lower pressing ring 5 is provided with a flange 51 adapted to the first groove 231. Further, the width of the first groove 231 is greater than the width of the flange 51 to ensure the convenience of assembling the lower pressing ring 5 and the lower mold 23, but it can be understood that the matching of the first groove 231 and the flange 51 in the width needs to ensure that the lower bottom surface of the lower pressing ring 5 is always pressed on the lower mold 23, so that the lower pressing ring 5 is stably clamped between the lower mold 23 and the diaphragm 3, and that one end of the lower pressing ring 5 can always extend into the molding cavity 11 to support the diaphragm 3 corresponding to the lower seam allowance molding part 112.

According to the illustrative embodiment, the first groove 231 in the lower die 23 and the flange 51 on the lower pressing ring 5 are matched, so that the lower pressing ring 5 is positioned, and the problem that the size of the lower opening 102 of the air bag cannot be controlled due to the fact that the pressing ring cannot be positioned and is deflected or inclined in the vulcanization process is solved.

In some embodiments, the belted air spring bladder vulcanization mold further includes a lower steel ring 8 and a lower chuck 9. The lower steel ring 8 is positioned in the vulcanizing cavity 10 and connected with the lower die 23, and the lower chuck 9 is positioned in the vulcanizing cavity 10 and connected with the lower steel ring 8. The lower chuck 9 is provided with a second clamping portion 91, and the lower port 32 of the diaphragm 3 is clamped between the second clamping portion 91 and the lower steel ring 8. In this exemplary embodiment, the lower port 32 of the diaphragm 3 is clamped and fixed by the second clamping portion 91.

In some embodiments, the upper portion of the middle mold 22 is provided with a first boss 221, and the upper mold 21 is provided with a first locking groove 211 adapted to the first boss 221. According to the illustrative embodiment, the middle die 22 and the upper die 21 of the belt type air spring air bag vulcanization die are matched and positioned, so that the die is simple and stable in structure.

In some embodiments, the lower portion of the middle mold 22 is provided with a second boss 222, and the lower mold 23 is provided with a second locking groove 232 fitted to the second boss 222. According to the illustrative embodiment, the middle die 22 and the lower die 23 of the vulcanization die for the belt type air spring air bag are matched and positioned, so that the die is simple and stable in structure.

In some embodiments, a belt forming portion 113 is provided at the connection portion of the middle mold 22 and the lower mold 23 in the forming cavity 11. Further, the belt forming portion 113 is formed by splicing two recessed portions located in the middle mold 22 and the lower mold 23. This exemplary embodiment realizes the vulcanization molding structural arrangement of the belt portion 113 of the belt-type air spring bag.

Example two:

compared with the first embodiment, the second embodiment is improved as follows, as shown in fig. 4-5:

the shape of the lower steel ring 8 is enlarged towards the direction of the lower bead forming part 112, so that the lower press ring 5 is clamped between the lower port 32 of the diaphragm 3 and the lower steel ring 8, namely, the lower steel ring 8 becomes a part of the lower bead forming part 112, and the size and the shape of the lower bead 102 of the air bag are mainly ensured by the lower steel ring 8 and the lower press ring 5. Correspondingly, the shape of the lower die 23 at the lower seam allowance forming part 112 is reduced, and the first groove 231 is not arranged on the lower die 23; and a second groove 81 is arranged on the lower steel ring 8, and the lower pressing ring 5 is provided with a flange 51 matched with the second groove 81.

According to the exemplary embodiment, the positioning of the lower pressing ring 5 is realized through the matching arrangement of the second groove 81 on the lower steel ring 8 and the flange 51 on the lower pressing ring 5, and the problem that the size of the lower sub-opening 102 of the air bag is uncontrollable due to the fact that the pressing ring cannot be positioned and is deflected or inclined in the vulcanization process is solved.

Through right the utility model discloses a description of a plurality of embodiments of waistband formula air spring gasbag vulcanization mould utensil can see the utility model discloses at least, have following one or more advantage:

1) through the arrangement of the upper pressing ring 4 and the lower pressing ring 5, the belt type air spring air bag vulcanization mold forms rigid closed molding spaces in the upper seam allowance molding part 111 and the lower seam allowance molding part 112 of the air bag, so that the problem that the seam allowance size of the air bag is uncontrollable due to the fact that the seam allowance shape of the air bag is vulcanized and molded only by the extrusion force of the mold and the diaphragm 3 is solved;

2) the positioning of the upper pressure ring 4 is realized by arranging the flanging 61 on the upper clamping ring 6; the positioning of the lower pressing ring 5 is realized through the matching arrangement of the first groove 231 on the lower die 23 and the flange 51 on the lower pressing ring 5, or through the matching arrangement of the second groove 81 on the lower steel ring 8 and the flange 51 on the lower pressing ring 5; the problem that the sizes of the upper sub-opening 101 and the lower sub-opening 102 of the air bag cannot be controlled due to the fact that the compression ring cannot be positioned and the compression ring is deflected or inclined in the vulcanization process is solved;

3) the utility model discloses can effectively control the rim of a mouth size of waistband formula air spring gasbag 1, guarantee the rim of a mouth of gasbag and the inseparable cooperation of upper cover, rubber heap and bearing of waistband formula air spring, avoid waistband formula air spring to have the gas leakage risk in the in-service use, promote the product percent of pass.

Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (8)

1. A belt type air spring air bag vulcanization mold is characterized by comprising:

the mold comprises an upper mold, a middle mold and a lower mold which are sequentially connected from top to bottom, wherein a vulcanization cavity is formed among the upper mold, the middle mold and the lower mold;

the diaphragm is arranged in the vulcanization cavity, and a forming cavity is formed between the diaphragm and the cavity wall of the vulcanization cavity;

the upper pressing ring is clamped between the upper port of the diaphragm and the upper die, and one end of the upper pressing ring extends into the forming cavity and is used for supporting the diaphragm corresponding to the upper sub-port forming part of the forming cavity;

and the lower pressing ring is clamped between the lower port of the diaphragm and the lower die, and one end of the lower pressing ring extends into the forming cavity to support the diaphragm corresponding to the lower seam allowance forming part of the forming cavity.

2. The vulcanization mold for a belt-type air spring bag according to claim 1, further comprising an upper clamp ring disposed in the vulcanization chamber and connected to the upper mold, wherein the upper clamp ring is provided with a flange, and an end of the upper clamp ring away from the molding chamber is clamped between the flange and the upper mold.

3. The belted air spring bladder vulcanization mold of claim 2, further comprising an upper chuck positioned within said vulcanization cavity and connected to said upper clamp ring, said upper chuck having a first clamping portion, said upper port of said diaphragm being clamped between said first clamping portion and said upper clamp ring.

4. The vulcanization mold for a belt-type air spring bladder according to claim 1, wherein a first groove is provided in said lower mold, and a flange adapted to fit said first groove is provided in said lower pressing ring.

5. The belted air spring bladder vulcanization mold of claim 1, further comprising a lower steel ring positioned within said vulcanization cavity and connected to said lower mold and a lower chuck positioned within said vulcanization cavity and connected to said lower steel ring; the lower chuck is provided with a second clamping part, and the lower port of the diaphragm is clamped between the second clamping part and the lower steel ring.

6. The vulcanization mold for a belt-type air spring bag according to claim 1, wherein a first boss is provided on an upper portion of the middle mold, and the upper mold is provided with a first engaging groove adapted to the first boss.

7. The vulcanization mold for a belt-type air spring bag according to claim 1, wherein a second boss is provided on a lower portion of the middle mold, and the lower mold is provided with a second engaging groove adapted to the second boss.

8. The vulcanization mold for a belt-type air spring bag according to claim 1, wherein a belt forming portion is provided at a junction of the middle mold and the lower mold in the forming cavity.

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