CN110509471B - Preparation method of hollow annular rubber part - Google Patents
Preparation method of hollow annular rubber part Download PDFInfo
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- CN110509471B CN110509471B CN201910671027.6A CN201910671027A CN110509471B CN 110509471 B CN110509471 B CN 110509471B CN 201910671027 A CN201910671027 A CN 201910671027A CN 110509471 B CN110509471 B CN 110509471B
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- rubber ring
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- release agent
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 118
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 238000004073 vulcanization Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007723 die pressing method Methods 0.000 claims description 5
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/1203—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by manufacturing, e.g. assembling or testing procedures for the damper units
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
Abstract
The invention discloses a preparation method of a hollow annular rubber part, belonging to the technical field of vibration reduction of a transmission shaft system, and comprising the following steps: firstly, manufacturing a metal bushing with a boss on the outer ring surface by a machining method; secondly, manufacturing a rubber ring with a convex outer layer by using a first set of die; thirdly, manufacturing an inner-layer rubber ring directly vulcanized on the outer side of the metal bushing by using a second set of die; then, fixing the rubber ring and the metal lining through a clamp; finally, the rubber ring and the metal bushing are vulcanized and bonded to form the hollow annular rubber member. The method has the advantages of simple preparation process, good sealing performance of the prepared hollow annular rubber part, simple installation and capability of being used for vibration reduction of a shaft system.
Description
Technical Field
The invention belongs to the technical field of vibration reduction of transmission shafts, and particularly relates to a preparation method of a hollow annular rubber part.
Background
The rubber vibration reduction technology is widely applied to railways, ships, airplanes and mechanical equipment, and the rubber is also used for manufacturing various shapes of vibration absorbers so as to reduce or eliminate the vibration of the machinery and achieve the purposes of vibration reduction and impact reduction.
In the current shafting shock absorber, a dry friction damper, an extrusion oil film damper, an intelligent spring shock absorber and the like are commonly used, the application of damping to an annular rubber part is mainly a solid rubber ring shock absorber, the application of the hollow rubber ring shock absorber is less, and the main reason is that the preparation of the hollow rubber ring is complex and the sealing property of an annular inner cavity is difficult to guarantee.
Disclosure of Invention
The invention discloses a preparation method of a hollow annular rubber part, which enables the processing and bonding of a hollow rubber ring to be simpler, especially enables the force application during bonding to be more convenient, and solves the problems that the preparation of the hollow rubber ring is more complicated and the sealing property of an annular inner cavity is difficult to guarantee in the prior art.
The invention is realized by the following steps:
the preparation method of the hollow annular rubber part is characterized by comprising the following specific steps of:
firstly, manufacturing a metal bushing with a boss on an outer ring by a machining method;
step two, manufacturing a rubber ring with a convex outer layer by using a first set of mould;
step three, manufacturing an inner layer rubber ring directly vulcanized on the outer side of the metal bushing by using a second set of die;
fixing the rubber ring and the metal bushing vulcanized with the inner layer rubber ring through a clamp;
and step five, finally, vulcanizing and bonding the rubber ring in the shape of the convex outer layer and the metal bushing vulcanized with the rubber ring in the inner layer to form the hollow annular rubber part.
Further, the second step is specifically to assemble the first set of mold and to prepare the rubber ring with the convex shape in the outer layer, and specifically comprises the following steps:
2.1, assembling a first set of moulds: the inner cavity ring coated with the release agent is clamped by the middle-upper inner die and the middle-lower inner die, the inner side of the inner cavity ring is provided with the adjusting sleeve, and the sleeve is axially provided with a gap, so that certain deformation capacity can be realized in the radial direction, the gap between the middle-upper inner die and the middle-lower inner die can be adjusted, the middle-upper inner die coated with the release agent and the middle-lower inner die coated with the release agent can be fixed at the bottom through the bushing and the nut to form a whole, and the middle-upper inner die and the middle-lower inner die can firmly fix the inner cavity ring through the whole;
2.2, placing the middle and lower outer dies at the peripheral position of the upper end of the die base coated with the release agent;
2.3, placing the whole body obtained in the step 2.1 in the middle of the upper end of a mold base, and then placing the upper and lower dies coated with the release agent on the upper and lower dies coated with the release agent to form a casting cavity, namely the shape of the outer layer annular rubber part; then pouring the uniformly mixed polyurethane prepolymer and vulcanizing agent liquid;
2.4, finally closing the die, covering a die cover coated with a release agent, putting the die on vulcanizing equipment, and setting parameters of the vulcanizing equipment to perform die pressing vulcanization treatment; and after the vulcanization treatment is finished, taking the mold, trimming and leveling the rubber piece, and preparing the rubber ring with the convex shape in the outer layer after the rubber piece is inspected to be qualified.
Further, the third step is specifically to assemble a second set of mold and prepare an inner layer rubber ring, and specifically comprises the following steps:
3.1, firstly, assembling a metal bushing with a boss outside a mandrel to form a whole;
3.2, putting the whole assembled in the first step into a lower die coated with a release agent, placing a middle die coated with the release agent above the lower die, and forming a cavity, namely the shape of the inner layer rubber ring, by using the second set of die at the moment; then, pouring the uniformly mixed polyurethane prepolymer and vulcanizing agent liquid;
3.3, finally closing the die, covering the upper die coated with the release agent, putting the assembled second set of die into vulcanizing equipment, and setting parameters such as temperature, pressure, time and the like of the vulcanizing equipment to perform die pressing vulcanization treatment; and taking the mold after the vulcanization treatment is finished to obtain the inner layer rubber ring vulcanized with the metal bushing into a whole.
Furthermore, the boss of the metal bushing is 2-3 mm.
Further, the fourth step is specifically: and D, coating glue between the inner layer rubber ring obtained in the step two and the outer layer convex rubber ring obtained in the step three, and fixing the metal bushing, the inner layer rubber ring and the outer layer annular rubber piece by moving the clamp from two sides to the middle. Rubber spare and metal lining bonding in-process need adopt anchor clamps for press from both sides tightly between rubber spare and the metal, because metal lining has the boss, so have the point of application of force more when anchor clamps press from both sides tightly, the application of force is more convenient, more non-deformable.
Furthermore, the two sides of the convex rubber ring in the outer layer are inclined, so that the rubber ring is clamped more tightly in use, and the bonding effect is better.
The beneficial effects of the invention and the prior art are as follows:
1. the preparation method of the hollow annular rubber part provided by the invention has the advantages that the processing and bonding of the hollow annular rubber part are simpler, and especially the force application during bonding is more convenient, because the metal bushing is provided with the boss with the diameter of 2-3mm, the rigidity and the strength of the metal are higher than those of rubber, the force applied to bond the inner layer rubber ring and the outer layer rubber ring has an acting point during bonding, the force is more conveniently applied, and the bonding is firmer.
2. The inner layer rubber ring is directly vulcanized on the outer ring surface of the bushing, so that the inner layer rubber ring and metal are bonded and fastened, separation is not easy to occur in the later use process, and time and workload can be saved due to direct vulcanization.
Drawings
FIG. 1 is a two-dimensional cross-sectional schematic view of a convexly shaped rubber ring in the outer layer of the present invention;
FIG. 2 is a two-dimensional cross-sectional schematic view of a vulcanized inner rubber ring metal liner of the present invention;
FIG. 3 is a two-dimensional cross-sectional view of a hollow annular rubber member of the present invention;
FIG. 4 is a schematic three-dimensional sectional view of a mold for manufacturing a rubber ring having a convex shape in an outer layer in the method for manufacturing a hollow annular rubber member according to the present invention;
FIG. 5 is a schematic two-dimensional cross-sectional view of a mold for manufacturing an inner annular rubber member in the method for manufacturing a hollow annular rubber member according to the present invention;
FIG. 6 is a schematic three-dimensional and three-dimensional half-sectional view of a metal bushing in the method for manufacturing a hollow annular rubber member according to the present invention;
FIG. 7 is a schematic sectional view showing a clamping process of a jig used in the method for producing a hollow annular rubber member according to the present invention;
the device comprises a mold cover 1, a mold cover 2, a middle upper outer mold, a mold inner cavity ring 3, a middle lower outer mold 4, a mold base 5, a bushing 6, a nut 7, a middle lower inner mold 8, a pouring cavity 9, an adjusting sleeve 10, a middle upper inner mold 11, an upper mold 41, a middle mold 42, a lower mold 43, a mandrel 44, a metal bushing 45, a rubber ring on an inner layer 46, a rubber ring in a convex shape on an outer layer 47 and a clamp 48.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The preparation process method comprises the following steps: firstly, manufacturing a metal bushing with a boss on an outer ring by adopting a machining method; secondly, manufacturing a rubber ring with a convex outer layer by using a first set of die; thirdly, manufacturing an inner layer rubber ring directly vulcanized on the outer side of the metal bushing by using a second set of die; fourthly, fixing the metal bushing vulcanized with the inner rubber ring and the outer rubber ring in a convex shape through a clamp; fifthly, glue is coated between the two layers of rubber rings, so that the metal bushing with the inner layer rubber ring and the rubber ring with the outer layer convex shape are vulcanized and bonded to form a hollow annular rubber part, and the rubber part is concrete:
firstly, a metal bushing with a boss on the outer ring is manufactured by adopting a machining method, as shown in fig. 6.
Secondly, manufacturing a rubber ring with a convex shape in the outer layer by using a first set of mould shown in fig. 4, namely manufacturing the rubber ring 47 with the convex shape in the outer layer shown in fig. 1; firstly, clamping an inner cavity ring 3 coated with a release agent by using an upper middle inner die 11 and a lower middle inner die 8, arranging an adjusting sleeve 10 on the inner side of the inner cavity ring 3, and fixing the upper middle inner die 11 coated with the release agent and the lower middle inner die 8 coated with the release agent at the bottom through a bushing 6 and a nut 7 to form a whole; secondly, the middle and lower outer dies 4 are placed on a die base 5 coated with a release agent; thirdly, the formed whole is placed on a mold base 5 coated with a release agent, and an upper and a lower mold 2 coated with the release agent are placed on an upper and a lower mold 4 coated with the release agent to form a casting cavity, namely the shape of the outer layer annular rubber piece 47; then, taking a certain amount of the prepolymer and the vulcanizing agent liquid which are uniformly mixed for pouring; finally, closing the die, covering the die cover 1 coated with the release agent, putting the die on vulcanizing equipment, and setting parameters such as temperature, pressure, time and the like to perform die pressing vulcanization treatment; and finally, taking the mold, trimming and leveling the rubber piece, and obtaining the rubber ring 47 with the convex shape in the outer layer after the inspection is qualified.
Thirdly, using a second set of mold shown in fig. 5 to manufacture a rubber ring 46 which is directly vulcanized and bonded with the outer annular surface of the metal bushing 45, as shown in fig. 2; first, a metal bush 45 with a boss of 2-3mm as shown in fig. 6 is fitted on a mandrel 44; secondly, the assembled metal bush 45 and the mandrel 44 are put into the lower mold 43 coated with the release agent; thirdly, a middle die 42 coated with a release agent is placed to form a pouring cavity 9, namely the shape of an inner layer rubber ring 46; then, taking a certain amount of the prepolymer and the vulcanizing agent liquid which are uniformly mixed for pouring; finally, closing the mold, covering the upper mold 41 coated with the release agent, putting the mold on vulcanizing equipment, and setting parameters such as temperature, pressure, time and the like to perform mold pressing vulcanization treatment; finally, the mold is removed, and the inner rubber ring 46 that has been vulcanized integrally with the metal bush 45 is obtained.
Fourthly, glue is coated between the inner layer rubber ring 46 and the outer layer middle convex rubber ring 47, the metal lining 45, the inner layer rubber ring 46 and the outer layer middle convex rubber ring 47 are fixed by moving the clamp 48 from two sides to the middle, the metal lining 45 is provided with a boss, so that a force application point is provided when the clamp is clamped, the force application is more convenient and is not easy to deform, and the two sides of the outer layer middle convex rubber ring 47 are provided with slopes, so that the clamping is more tight when the clamp is used, so that the bonding effect is better, as shown in fig. 7, fig. 7a to 7d are respectively schematic cross-sectional views of the initial clamping position, the rubber deformation starting position and the ending position of the clamping in the clamping process of the clamp used in the preparation method of the hollow annular rubber piece. In the process of clamping, as the rubber has a certain inclination, the rubber and the metal bushing are clamped along with the movement of the clamp, in the process, an external force is applied to the clamp to cause the rubber to deform, and as the rigidity of the metal bushing 45 is far greater than that of the rubber, the metal bushing is provided with a boss which plays a role in positioning and supporting, so that the deformation of the rubber is controlled to a certain degree, and the rubber is bonded more firmly.
And fifthly, taking down the clamp to obtain the hollow annular rubber part shown in figure 3.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. The preparation method of the hollow annular rubber part is characterized by comprising the following steps of:
firstly, manufacturing a metal bushing (45) with a boss on the outer ring by adopting a machining method;
step two, manufacturing a rubber ring (47) with a convex shape in the outer layer by using a first set of mould;
step three, manufacturing an inner layer rubber ring (46) directly vulcanized on the outer side of the metal bushing by using a second set of mould;
fixing the rubber ring and the metal bushing vulcanized with the inner layer rubber ring through a clamp (48), specifically: coating glue between the inner layer rubber ring (46) obtained in the second step and the outer layer convex rubber ring (47), and fixing the metal bushing (45), the inner layer rubber ring (46) and the outer layer convex rubber ring (47) by moving a clamp (48) from two sides to the middle;
and step five, finally, vulcanizing and bonding the rubber ring (47) with the convex shape in the outer layer and the metal bushing (45) vulcanized with the rubber ring in the inner layer to form the hollow annular rubber part.
2. The method for preparing a hollow annular rubber member according to claim 1, wherein the second step is specifically to assemble a first set of molds and prepare a rubber ring with a convex shape in an outer layer, and specifically comprises the following steps:
2.1, assembling a first set of moulds: the inner cavity ring (3) coated with the release agent is clamped by the middle-upper inner die (11) and the middle-lower inner die (8), an adjusting sleeve (10) is arranged on the inner side of the inner cavity ring (3), and the middle-upper inner die (11) coated with the release agent and the middle-lower inner die (8) coated with the release agent are fixed at the bottom through a bushing (6) and a nut (7) to form a whole;
2.2, placing the middle and lower outer dies (4) at the peripheral position of the upper end of the die base (5) coated with the release agent;
2.3, placing the whole body obtained in the step 2.1 in the middle of the upper end of a mold base (5), and then placing the middle and upper external molds (2) coated with the release agent on the middle and lower external molds (4) coated with the release agent to form a casting cavity (9), namely the shape of a convex rubber ring (47) in the outer layer; then pouring the uniformly mixed polyurethane prepolymer and vulcanizing agent liquid;
2.4, finally closing the die, covering the die cover (1) coated with the release agent, putting the die on vulcanizing equipment, and setting parameters of the vulcanizing equipment to perform die pressing vulcanization treatment; and after the vulcanization treatment is finished, taking the mold, trimming and leveling the rubber piece, and preparing the rubber ring (47) with the convex shape in the outer layer after the rubber piece is inspected to be qualified.
3. The method for preparing a hollow annular rubber member according to claim 1, wherein the third step is specifically assembling a second set of molds and preparing an inner layer rubber ring, and specifically comprises the following steps:
3.1, firstly, assembling a metal bushing (45) with a boss outside a mandrel (44) to form a whole;
3.2, putting the whole assembled in the step 3.1 into a lower die (43) coated with a release agent, placing a middle die (42) coated with the release agent above the lower die (43), and forming a cavity, namely the shape of the inner layer rubber ring (46), by using a second set of dies at the moment; then, pouring the uniformly mixed polyurethane prepolymer and vulcanizing agent liquid;
3.3, finally closing the die, covering an upper die (41) coated with a release agent, putting the assembled second set of die into vulcanizing equipment, and setting parameters of the vulcanizing equipment to perform die pressing vulcanization treatment; and after the vulcanization treatment is finished, taking the mold to obtain the inner layer rubber ring (46) vulcanized with the metal bushing (45).
4. A method for manufacturing a hollow ring-shaped rubber member as claimed in claim 3, wherein said boss of said metal bush (45) is 2-3 mm.
5. The method for preparing a hollow annular rubber member as claimed in claim 1, wherein the connection between both sides of the convex rubber ring (47) in the outer layer and the rubber ring (46) in the inner layer is tapered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910671027.6A CN110509471B (en) | 2019-07-24 | 2019-07-24 | Preparation method of hollow annular rubber part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671027.6A CN110509471B (en) | 2019-07-24 | 2019-07-24 | Preparation method of hollow annular rubber part |
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| CN110509471B true CN110509471B (en) | 2021-07-09 |
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| US6308810B1 (en) * | 1998-08-07 | 2001-10-30 | Tokai Rubber Industries, Ltd. | Dynamic damper with balancing means and method of manufacturing the same |
| DE10350143A1 (en) * | 2003-10-28 | 2005-06-02 | Daimlerchrysler Ag | Automobile drive line, has drive shaft coupled with rotating body, so that body twists against shaft when brake away torque is reached, where body and torque are designed based on characteristic of switching impact caused by gear shift |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110509471A (en) | 2019-11-29 |
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