Straight cylinder mold for air spring leather bag

Abstract

The utility model provides a straight cylinder mold for an air spring leather bag. The straight cylinder mold comprises a mold center shaft, a mold moving part, a first forming part, a second forming part and a reset structure, in the cutting process, the leather bag is arranged on the leather bag mold in a sleeving mode; downward pressure is applied to the mold moving part, and the mold moving part drives the first forming structure to drive the first forming part to expand outwards and synchronously drives the second forming structure to drive the second forming part to expand outwards, so that the leather bag reaches a preset external expansion state, and the subsequent cutting procedure is facilitated; and after the leather bag is cut, downward pressure applied to the mold moving part is eliminated, the mold moving part is reset to the initial state through the reset structure, the first forming part and the second forming part are reset to the initial state, then the leather bag is taken down, and the cutting process is completed. According to the straight cylinder mold, the external expansion degree of the leather bag can be accurately controlled, it is ensured that the leather bag reaches a preset state, the strict requirements of modern industry are met, and the production quality and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould technical field, concretely relates to a straight cylinder mould for air spring skin bag. BACKGROUND

[0002] Air spring is an advanced vehicle suspension system component, and reaches the elastic support function by filling compressed air. The air spring skin bag is the core component of the air spring system, and its material is generally selected from rubber, such as neoprene. The air spring skin bag can be obviously deformed under load, but can restore to the original state after release. This unique performance plays an important role in dealing with noise, vibration and sound roughness generated during vehicle driving, and to a certain extent, optimizes the driving comfort and driving stability of the vehicle, and provides protection for the high-quality operation of modern vehicles.

[0003] In the processing flow of the air spring skin bag, the sleeve mould and the cutting belong to the core link, and the processing precision is directly related to the quality of the skin bag finished product and the overall performance of the air spring. In the initial stage, the skin bag is sleeved on the matched mould, the skin bag is uniformly and closely attached to the mould, and the defects such as wrinkles and bubbles are prevented; then the mould is started to expand, the mould expands outward according to the preset parameters, and the expansion is accurate in amplitude, speed and force; when the mould expansion reaches the predetermined state, the skin bag is cut according to the preplanned parting line, and in the cutting process, the cutting parameters such as cutting speed, depth and angle are strictly controlled, the cutting is neat, smooth and accurate in size, and then the skin bag finished product meeting the standard is obtained, and the performance in the vehicle suspension system and many application scenarios is ensured. However, there is no mould specially used for cutting the skin bag on the market at present, and the existing manual cutting processing mode cannot meet the increasing fine and professional requirements.

[0004] Therefore, the inventor designs a new skin bag mould, which aims to fill this gap, optimize the processing flow of the air spring skin bag and improve the product quality and production efficiency. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model solves the technical problems that there is no mould specially used for cutting the skin bag in the prior art, and the existing processing mode cannot meet the increasing fine and professional requirements, thereby providing a new skin bag mould, which aims to fill this gap, optimize the processing flow of the air spring skin bag and improve the product quality and production efficiency.

[0006] Therefore, the utility model provides a straight cylinder mould for air spring skin bag, which comprises:

[0007] The mould center shaft is fixedly installed on the mould base.

[0008] mold moving members, two, synchronously movable up and down, are installed on both sides of the mold center shaft;

[0009] a first forming member, movably installed on the mold center shaft through a first forming structure, has an initial state and an expanded state expanded outward under the action of the first forming structure driven by the mold moving member;

[0010] a second forming member, separated from the first forming member by a certain distance, is movably installed on the mold center shaft through a second forming structure, has an initial state and an expanded state expanded outward under the action of the second forming structure driven by the mold moving member;

[0011] a reset structure is used to reset the mold moving member to the initial state, so as to reset the first forming member and the second forming member to the initial state;

[0012] when downward pressure is applied to the mold moving member, the mold moving member drives the first forming structure to drive the first forming member to expand outward, and synchronously drives the second forming structure to drive the second forming member to expand outward;

[0013] when the downward pressure applied to the mold moving member is removed, the mold moving member is reset to the initial state through the reset structure, and the first forming member and the second forming member are reset to the initial state.

[0014] As a preferred solution, the first forming member includes:

[0015] first fixed forming members, two, are fixedly installed on both sides of the mold center shaft, respectively;

[0016] first movable forming members, two, are movably installed between the two first fixed forming members through first installation connecting members, respectively, form a cylindrical structure with the first fixed forming members, and can be relatively separated by a distance; the two first movable forming members can move closer or apart relative to the first fixed forming members, but cannot be completely separated, so as to realize the actions of closing and opening the mold.

[0017] As a preferred solution, the first forming structure includes:

[0018] first forming plates, two, are fixedly installed on the outer sides of the two mold moving members, respectively;

[0019] first forming rollers, at least one, are installed on the first movable forming members in a manner that can be driven to rotate by the first forming plates, opposite to the first forming plates;

[0020] Second forming roller, at least one, opposite to the first forming plate, and rotatably mounted on the second movable forming member by the second forming plate.

[0021] As a preferred solution, the first forming plate gradually reduces the distance from the top end to the bottom end to the mold moving member, so that when the first forming plate moves downward, the first movable forming member on both sides can expand outward through the cooperation of the first forming roller, the second forming roller and the first forming plate; when the first forming plate moves upward, the first movable forming member recovers inward.

[0022] As a preferred solution, the second forming member includes:

[0023] Second fixed forming member, two, respectively fixedly installed on both sides of the mold center shaft;

[0024] Second movable forming member, two, respectively movably installed between the two second fixed forming members through the second mounting connecting member, forming a cylindrical structure with the second fixed forming member, and can be relatively separated by a distance; two second movable forming members can move closer or apart relative to the second fixed forming member, but not completely separated, to realize the mold closing or opening action.

[0025] As a preferred solution, the second forming structure includes:

[0026] Second forming plate, two, respectively fixedly installed on the outer side of the two mold moving members;

[0027] Third forming roller, at least one, opposite to the second forming plate, and rotatably mounted on the second movable forming member by the second forming plate;

[0028] Fourth forming roller, at least one, opposite to the other second forming plate, and rotatably mounted on the other second movable forming member by the other second forming plate.

[0029] As a preferred solution, the second forming plate gradually reduces the distance from the top end to the bottom end to the mold moving member, so that when the second forming plate moves downward, the second movable forming member on both sides can expand outward through the cooperation of the third forming roller, the fourth forming roller and the second forming plate; when the second forming plate moves upward, the second movable forming member recovers inward.

[0030] As a preferred solution, the reset structure includes:

[0031] Reset connecting piece, two, respectively fixedly installed at the bottom of two said mold moving piece;

[0032] Reset through hole, two, with two said reset connecting piece is set on the said mold base, and two said reset connecting piece to two said reset through hole;

[0033] Reset elastic piece, two, respectively set in two said reset connecting piece, top and said reset connecting piece abutment, bottom and said reset through hole inner bottom wall abutment.

[0034] As a preferred scheme, the first forming piece is limited on the mold center shaft by a first limiting structure;

[0035] The first limiting structure comprises:

[0036] First limiting slot, at least one, circumferentially set in the first forming piece;

[0037] First limiting ring, elastic material, set in the first limiting slot;

[0038] The second forming piece is limited on the mold center shaft by a second limiting structure;

[0039] The second limiting structure comprises:

[0040] Second limiting slot, at least one, circumferentially set in the second forming piece;

[0041] Second limiting ring, elastic material, set in the second limiting slot.

[0042] As a preferred scheme, further comprising a mold limiting piece, fixedly set on the mold center shaft, and the setting position is between the first forming piece and the second forming piece.

[0043] The technical scheme provided by the utility model has the following advantages:

[0044] The utility model discloses a straight tube mould for air spring skin bag, including mould center shaft, mould moving part, first forming part, second forming part and reset structure, wherein mould center shaft fixed mounting is on mould base, mould moving part is two, and the synchronous moving installation of up and down is in the both sides of mould center shaft, first forming part is through first forming structure and is movably installed on mould center shaft, and first forming part has initial state and the extension state of the extension of outside under the action of first forming structure of mould moving part, second forming part is separated with first forming part certain distance, and is movably installed on mould center shaft through second forming structure, and second forming part has initial state and the extension state of the extension of outside under the action of second forming structure of mould moving part, reset structure is used to reset mould moving part to initial state, to reset first forming part and second forming part to initial state.

[0045] When cutting the air spring skin bag, first, the skin bag is set on the skin bag mould according to the specification requirements; after the skin bag setting is completed, downward pressure is applied to the mould moving part, the mould moving part drives the first forming structure to drive the first forming part to expand outward, and synchronously drives the second forming structure to drive the second forming part to expand outward, so that the skin bag reaches the predetermined outward expansion state, so as to carry out the subsequent processing procedure; after the skin bag is cut according to the pre-planned parting line, the downward pressure applied to the mould moving part is eliminated, the mould moving part is reset to the initial state through the reset structure, the first forming part and the second forming part are reset to the initial state, then the skin bag is taken off from the skin bag mould, and the processing flow is completed. The straight tube mould for air spring skin bag of the utility model can accurately control the outward expansion degree of the skin bag during the cutting process, ensures that the skin bag reaches the predetermined state, meets the strict requirements of modern industry on product refinement and specialization, improves the production quality and efficiency, and provides reliable guarantee for high-quality manufacturing of the air spring skin bag. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical scheme in the prior art or the embodiment of the utility model, the drawings used in the description of the prior art or the embodiment are briefly introduced as follows.

[0047] Figure 1 It is the whole structure schematic diagram of the straight tube mould for air spring skin bag of the utility model.

[0048] Figure 2 It is Figure 1 The sectional view of

[0049] Figure 3 It is Figure 1 The explosion structure schematic diagram of

[0050] Figure 4 It is Figure 1is a structural schematic diagram of the first forming piece after explosion.

[0051] Figure 5 is another perspective view of the first forming piece. Figure 4

[0052] Figure 6 is another perspective view of the first forming piece. Figure 1 is a structural schematic diagram of the second forming piece after explosion.

[0053] Figure 7 is another perspective view of the second forming piece. Figure 6

[0054] is a structural schematic diagram of the first forming piece and the second forming piece after being taken off. Figure 8 Figure 3 Reference signs: 100, mold center shaft; 101, mold base; 110, mold moving piece; 120, first forming piece; 121, first movable forming piece; 122, first fixed forming piece; 123, first mounting connecting piece; 130, second forming piece; 131, second movable forming piece; 132, second fixed forming piece; 133, second mounting connecting piece; 140, first forming plate; 141, first forming roller; 142, second forming roller; 150, second forming plate; 151, third forming roller; 152, fourth forming roller; 160, reset connecting piece; 161, reset through hole; 162, reset elastic piece; 170, first limiting groove; 171, first limiting ring; 172, second limiting groove; 173, second limiting ring; 180, mold limiting piece. DETAILED DESCRIPTION

[0055] In order for those skilled in the art to better understand the present scheme, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without making creative efforts should fall within the scope of protection of the present application.

[0056] It should be noted that the terms “first”, “second” and the like in the claims and the description of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but can also include other steps or units that are not clearly listed or inherent to the process, method, product or device.

[0057] It should be noted that the terms “first”, “second” and the like in the claims and the description of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but can also include other steps or units that are not clearly listed or inherent to the process, method, product or device. ​​

[0058] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0059] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0060] This embodiment provides a cylindrical mold for an air spring bladder, such as... Figures 1-3 As shown, the system includes: a mold central shaft 100, a mold moving component 110, a first forming component 120, a second forming component 130, and a reset structure; wherein, the mold central shaft 100 is fixedly mounted on the mold base 101; there are two mold moving components 110, which are synchronously moved up and down on both sides of the mold central shaft 100; the first forming component 120 is movably mounted on the mold central shaft 100 through the first forming structure, and the first forming component 120 has an initial state and an extended state in which it expands outward under the action of the first forming structure driven by the mold moving component 110; the second forming component 130 is spaced a certain distance from the first forming component 120 and is movably mounted on the mold central shaft 100 through the second forming structure, and the second forming component 130 has an initial state and an extended state in which it expands outward under the action of the second forming structure driven by the mold moving component 110; the reset structure is used to reset the mold moving component 110 to the initial state, thereby resetting the first forming component 120 and the second forming component 130 to the initial state.

[0061] When cutting the air spring bag, first, the bag is set on the bag mold according to the specification requirements; after the bag setting is completed, a downward pressure is applied to the mold moving part 110, the mold moving part 110 drives the first forming structure to drive the first forming part 120 to expand outward, and synchronously drives the second forming structure to drive the second forming part 130 to expand outward, so that the bag reaches a predetermined outward expansion state, so as to carry out the subsequent processing procedure; when the cutting of the bag according to the pre-planned parting line is completed, the downward pressure applied to the mold moving part 110 is eliminated, the mold moving part 110 is reset to the initial state through the reset structure, the first forming part 120 and the second forming part 130 are reset to the initial state, and then the bag is taken off from the bag mold, completing the processing flow. The straight cylinder mold for the air spring bag of the embodiment can accurately control the outward expansion degree of the bag during cutting, ensure that the bag reaches a predetermined state, meet the strict requirements of modern industry for product refinement and specialization, improve production quality and efficiency, and provide reliable protection for high-quality manufacturing of air spring bags.

[0062] As shown in Figures 4-5 , the first forming part 120 includes a first fixed forming part 122 and a first movable forming part 121; wherein the first fixed forming part 122 is two, respectively fixedly installed on both sides of the mold center shaft 100; the first movable forming part 121 is two, respectively movably installed between the two first fixed forming parts 122 through the first mounting connecting part 123, forming a cylindrical structure with the first fixed forming part 122, and can be separated by a distance; the two first movable forming parts 121 can move closer or apart relative to the first fixed forming part 122, but will not be completely separated, to realize the mold closing or mold opening action.

[0063] As shown in Figure 2 , the first forming structure includes a first forming plate 140, a first forming roller 141 and a second forming roller 142; wherein the first forming plate 140 is two, respectively fixedly installed on the outer side of the two mold moving parts 110; the first forming roller 141 is at least one, opposite to the first forming plate 140, and can be rotatably installed on the first movable forming part 121 through the first forming plate 140; the second forming roller 142 is at least one, opposite to the other first forming plate 140, and can be rotatably installed on the other first movable forming part 121 through the other first forming plate 140. The first forming roller 141 is provided with two, and the second forming roller 142 is provided with two, the two first forming rollers 141 and the two second forming rollers 142 cooperate with the first forming plate 140, which can make the first movable forming part 121 expand outward more stably and reset accurately, ensuring the precision of the bag processing and improving the production quality.

[0064] The first forming plate 140 gradually reduces the distance from the top end to the bottom end to the mold moving part 110, so that when the first forming plate 140 moves downward, the first movable forming part 121 on both sides can expand outward through the cooperation of the first forming roller 141, the second forming roller 142 and the first forming plate 140; when the first forming plate 140 moves upward, the first movable forming part 121 is recycled inward.

[0065] As shown in Figures 6-7 The second forming part 130 includes a second fixed forming part 132 and a second movable forming part 131; wherein the second fixed forming part 132 is two, respectively fixedly installed on both sides of the mold center shaft 100; the second movable forming part 131 is two, respectively movably installed between the two second fixed forming parts 132 through the second installation connecting part 133, forming a cylindrical structure with the second fixed forming part 132, and can be relatively separated by a distance; the two second movable forming parts 131 can move closer or separate relative to the second fixed forming part 132, but will not be completely separated, so as to realize the actions of closing or opening the mold.

[0066] As shown in Figure 2 The second forming structure includes a second forming plate 150, a third forming roller 151 and a fourth forming roller 152; wherein the second forming plate 150 is two, respectively fixedly installed on the outside of the two mold moving parts 110; the third forming roller 151 is at least one, opposite to the second forming plate 150, and can be rotatably installed on the second movable forming part 131 through the second forming plate 150; the fourth forming roller 152 is at least one, opposite to the other second forming plate 150, and can be rotatably installed on the other second movable forming part 131 through the other second forming plate 150. The third forming roller 151 is provided with two, and the fourth forming roller 152 is provided with two, and the two third forming rollers 151 and the two fourth forming rollers 152 cooperate with the second forming plate 150 respectively, which can make the second movable forming part 131 expand outward and reset more stably and accurately, ensuring the precision of the bladder processing and improving the production quality.

[0067] The second forming plate 150 gradually reduces the distance from the top end to the bottom end to the mold moving part 110, so that when the second forming plate 150 moves downward, the second movable forming part 131 on both sides can expand outward through the cooperation of the third forming roller 151, the fourth forming roller 152 and the second forming plate 150; when the second forming plate 150 moves upward, the second movable forming part 131 is recycled inward.

[0068] AsFigure 8 As shown, the reset structure includes a reset connecting piece 160, a reset through hole 161 and a reset elastic piece 162; wherein the reset connecting piece 160 is two, respectively fixedly installed at the bottom of the two mold moving pieces 110; the reset through hole 161 is two, which is opened on the mold base 101 opposite to the two reset connecting pieces 160, and the two reset connecting pieces 160 extend into the two reset through holes 161; the reset elastic piece 162 is two, which is respectively sleeved on the two reset connecting pieces 160, the top end abuts against the reset connecting piece 160, and the bottom end abuts against the inner bottom wall of the reset through hole 161. When the downward pressure is applied to the mold moving piece 110, the mold moving piece 110 drives the reset connecting piece 160 to move downward to extrude the reset elastic piece 162; when the downward pressure applied to the mold moving piece 110 is eliminated, the mold moving piece 110 is elastically pushed by the reset elastic piece 162, and is reset to the initial state.

[0069] The first forming piece 120 is limited on the mold center shaft 100 by the first limiting structure; the first limiting structure includes a first limiting groove 170 and a first limiting ring 171; wherein the first limiting groove 170 is at least one, which is circumferentially opened on the first forming piece 120; the first limiting ring 171 is of elastic material, which is sleeved and installed in the first limiting groove 170; the first limiting groove 170 is opened with two, and the first limiting ring 171 is matched with the first limiting groove 170, which is provided with two, two sets of limiting structures can more stably limit the first movable forming piece 121, avoiding the dislocation of the first movable forming piece 121. The second forming piece 130 is limited on the mold center shaft 100 by the second limiting structure; the second limiting structure includes a second limiting groove 172 and a second limiting ring 173; wherein the second limiting groove 172 is at least one, which is circumferentially opened on the second forming piece 130; the second limiting ring 173 is of elastic material, which is sleeved and installed in the second limiting groove 172; the second limiting groove 172 is opened with two, and the second limiting ring 173 is matched with the second limiting groove 172, which is provided with two, two sets of limiting structures can more stably limit the second movable forming piece 131, avoiding the dislocation of the second movable forming piece 131.

[0070] It also includes a mold limiting piece 180, which is fixedly sleeved on the mold center shaft 100, and is arranged between the first forming piece 120 and the second forming piece 130. The mold limiting piece 180 is used to limit the position of the first forming plate 140, avoiding the over-deep movement of the mold moving piece 110.

[0071] The straight cylinder mold for the air spring bladder in the embodiment is used as follows: when cutting the air spring bladder, first, the bladder is sleeved on the bladder mold according to the specification requirements; after the bladder is sleeved, a downward pressure is applied to the mold moving part 110, the mold moving part 110 drives the first forming plate 140 to drive the first movable forming part 121 to expand outward through the first forming roller 141, the second forming roller 142, and synchronously drives the second forming plate 150 to drive the second movable forming part 131 to expand outward through the third forming roller 151, the fourth forming roller 152, so that the bladder reaches a predetermined outward expansion state, so as to carry out subsequent processing procedures; when the cutting of the bladder according to the pre-planned parting line is completed, the downward pressure applied to the mold moving part 110 is eliminated, the mold moving part 110 is elastically pushed by the reset elastic part 162 and is reset to the initial state, the first movable forming part 121 and the second movable forming part 131 are reset to the initial state, then the bladder is taken off from the bladder mold, and the processing flow is completed.

[0072] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For those skilled in the art, based on the above description, other different forms of changes or variations can also be made. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the technical scheme.

Claims

1. A cylindrical mold for an air spring bladder, characterized in that, include: The mold center shaft (100) is fixedly installed on the mold base (101); Two mold moving parts (110) are installed on both sides of the mold central shaft (100) and can move up and down synchronously. The first molding part (120) is movably mounted on the central shaft (100) of the mold via the first molding structure. The first molding part (120) has an initial state and an extended state in which the mold moving part (110) drives the first molding structure to expand outward. The second molding part (130) is separated from the first molding part (120) by a certain distance and is movably mounted on the central shaft (100) of the mold through the second molding structure. The second molding part (130) has an initial state and an extended state in which it expands outward under the action of the second molding structure driven by the mold moving part (110). A reset structure is provided for resetting the mold moving part (110) to its initial state, thereby resetting the first molding part (120) and the second molding part (130) to their initial states. When a downward pressure is applied to the mold moving part (110), the mold moving part (110) drives the first molding structure to drive the first molding part (120) to expand outward, and simultaneously drives the second molding structure to drive the second molding part (130) to expand outward; When the downward pressure applied to the mold moving part (110) is removed, the mold moving part (110) is reset to its initial state by the reset structure, and the first molding part (120) and the second molding part (130) are reset to their initial states.

2. The cylindrical mold for an air spring bladder according to claim 1, characterized in that, The first molded part (120) includes: There are two first fixed forming parts (122), which are respectively fixedly installed on both sides of the central shaft (100) of the mold; There are two first movable molding parts (121), which are movably installed between the two first fixed molding parts (122) through the first mounting connector (123), forming a cylindrical structure with the first fixed molding parts (122) and being able to be separated by a certain distance; the two first movable molding parts (121) can move closer or separate relative to the first fixed molding parts (122), but will not completely separate, so as to realize the mold closing or mold opening action.

3. The cylindrical mold for an air spring bladder according to claim 2, characterized in that, The first molding structure includes: There are two first forming plates (140), which are respectively fixedly installed on the outside of the two mold moving parts (110); At least one first forming roller (141) is opposite to the first forming plate (140) and is rotatably mounted on the first movable forming part (121) by being driven by the first forming plate (140); At least one second forming roller (142) is opposite to another first forming plate (140) and is rotatably mounted on another first active forming member (121) by being driven by the other first forming plate (140).

4. The cylindrical mold for an air spring bladder according to claim 3, characterized in that: The distance between the first forming plate (140) and the mold moving part (110) gradually decreases from the top to the bottom, so that when the first forming plate (140) moves downward, the first movable forming parts (121) on both sides can expand outward through the cooperation of the first forming roller (141), the second forming roller (142) and the first forming plate (140); when the first forming plate (140) moves upward, the first movable forming parts (121) retract inward.

5. The cylindrical mold for an air spring bladder according to claim 1, characterized in that, The second molded part (130) includes: The second fixed forming component (132) consists of two parts, which are respectively fixedly installed on both sides of the central shaft (100) of the mold; There are two second movable molding parts (131), which are movably installed between the two second fixed molding parts (132) through the second mounting connector (133), forming a cylindrical structure with the second fixed molding parts (132), and can be separated by a certain distance; the two second movable molding parts (131) can move closer or separate relative to the second fixed molding parts (132), but will not completely separate, so as to realize the mold closing or mold opening action.

6. The cylindrical mold for an air spring bladder according to claim 5, characterized in that, The second molding structure includes: There are two second forming plates (150), which are respectively fixedly installed on the outside of the two mold moving parts (110); At least one third forming roller (151) is opposite to the second forming plate (150) and is rotatably mounted on the second movable forming part (131) by being driven by the second forming plate (150); At least one fourth forming roller (152) is opposite to another second forming plate (150) and is rotatably mounted on another second active forming member (131) by being driven by the other second forming plate (150).

7. The cylindrical mold for an air spring bladder according to claim 6, characterized in that: The distance between the second forming plate (150) and the mold moving part (110) gradually decreases from the top to the bottom, so that when the second forming plate (150) moves downward, the second movable forming parts (131) on both sides can expand outward through the cooperation of the third forming roller (151), the fourth forming roller (152) and the second forming plate (150); when the second forming plate (150) moves upward, the second movable forming parts (131) retract inward.

8. The cylindrical mold for an air spring bladder according to claim 1, characterized in that, The reset structure includes: Two reset connectors (160) are fixedly installed on the bottom of the two mold moving parts (110); There are two reset through holes (161), which are opened on the mold base (101) opposite to the two reset connectors (160), and the two reset connectors (160) extend into the two reset through holes (161); There are two reset elastic elements (162), which are respectively sleeved on the two reset connectors (160). The top end abuts against the reset connector (160), and the bottom end abuts against the inner bottom wall of the reset through hole (161).

9. The cylindrical mold for an air spring bladder according to claim 1, characterized in that: The first molded part (120) is limited on the central axis (100) of the mold by the first limiting structure; The first limiting structure includes: At least one first limiting groove (170) is circumferentially formed on the first molded part (120); The first limiting ring (171), made of elastic material, is sleeved and installed in the first limiting groove (170); The second molded part (130) is limited on the central axis (100) of the mold by the second limiting structure; The second limiting structure includes: At least one second limiting groove (172) is circumferentially formed on the second molded part (130); The second limiting ring (173), made of elastic material, is fitted and installed inside the second limiting groove (172).

10. The cylindrical mold for an air spring bladder according to claim 1, characterized in that: It also includes a mold limiting component (180), which is fixedly sleeved on the mold central shaft (100) and positioned between the first molding component (120) and the second molding component (130).

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