Energy absorber
By directly forming and laying the ring film, the process process is simplified, and the problems of low yield of the energy absorber and foam bubbles are solved, which improves production efficiency and performance and reduces costs.
Patent Information
- Application Number
- CN202323566723.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The existing energy absorber molding process is complex and the yield is low, resulting in high production costs. The outer surface of the product often has rubber bubbles, which cannot meet the usage requirements.
Multiple annular films are used, and the cross-sectional area of the film is matched with the filling cavity, directly molded and laid flat on the inner core, reducing winding and exhaust steps, and using a fan-shaped rubber section to reduce overlap gaps and simplifying the process.
It improves yield and production efficiency, reduces production costs, meets demands for product performance, improves appearance quality, and improves tensile strength and tear-break elongation.
Smart Images
Figure CN222139924U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of offshore petroleum engineering, and particularly relates to an energy absorber. Background Art
[0002] With the development of offshore business, there are often operational accidents caused by high-speed collisions during the docking process of large ships, which affects the safety of navigation. Therefore, it is necessary to equip the appropriate position of the jacket with corresponding buffer and anti-collision devices to improve the safety of navigation. Energy absorbers can well undertake this mission. However, the molding process of energy absorbers is complicated and the yield rate is very low, which greatly increases the production cost of energy absorbers.
[0003] During the molding process of the test product, the film is first produced and cut into 73mm width and 6mm thickness. After cutting, each piece of film is wound onto the inner core. Every 2-3 layers of film are wound, and tightened once with a pressure roller or water-wrapped cloth. During this period, the air is exhausted several times. The core and the outer cylinder after the wrapping are assembled into a matching mold, assembled into a matching mold, pressed into shape, and finally vulcanized to ensure the quality of the finished product. After the product is pressed and molded, bubbles of rubber appear in many places on the outer surface of the product, which cannot meet the use requirements.
[0004] Therefore, it is urgent to design an energy absorber to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of the utility model is to provide an energy absorber, which is not only easy to install and connect, but also can complete the molding of the energy absorber, solves the problems of bubbles generated on the outer surface and low molding rate, can greatly reduce production costs, improve construction efficiency, and solves the problems mentioned in the background technology.
[0006] In order to achieve the above-mentioned purpose, the specific technical solution of an energy absorber of the utility model is as follows:
[0007] An energy absorber comprises an outer energy absorbing tube, an inner energy absorbing tube is arranged inside the outer energy absorbing tube, an energy absorbing filling cavity is arranged between the outer energy absorbing tube and the inner energy absorbing tube, a film is laid in the energy absorbing filling cavity, the cross-sectional area of the film is the same as the cross-sectional area of the energy absorbing filling cavity, and the film is bonded to the energy absorbing filling cavity.
[0008] Furthermore, the specific number of films is multiple, and the multiple films are bonded together.
[0009] Furthermore, the film is ring-shaped, the inner end of the film is in contact with the energy-absorbing inner tube, and the outer end of the film is in contact with the energy-absorbing outer tube.
[0010] Furthermore, the film includes rubber segments, the rubber segments are arranged in an array with the energy absorbing inner tube as the center, and the rubber segments are spread flat in the energy absorbing filling cavity.
[0011] Furthermore, the inner end of the rubber segment is fitted with the energy absorbing inner tube, and the outer end of the rubber segment is fitted with the energy absorbing outer tube.
[0012] Furthermore, overlapping gaps are provided between adjacent rubber sections.
[0013] Furthermore, the specific number of the rubber segments is eight, and the size of each rubber segment is the same.
[0014] Furthermore, the rubber section is integrally formed.
[0015] Furthermore, the rubber segment is fan-shaped.
[0016] Furthermore, the energy absorbing outer tube and the energy absorbing inner tube are located on the same axis.
[0017] The utility model has the following advantages: the utility model has fewer overlapping gaps, and at the same time reduces multiple exhaust and roller windings in the production process. The process method is relatively simple and easy to operate, which improves production efficiency and yield rate. The measured data can also meet the product performance requirements well. The measured data from theory and experiments can meet the needs, which is more conducive to cost saving and long-term development of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the currently unqualified energy absorber;
[0019] Figure 2 This is a schematic diagram of the structure of the energy absorber of the utility model;
[0020] Figure 3 It is a structural schematic diagram of the rubber segment of the utility model;
[0021] Explanation of markings in the figure: 1. Energy-absorbing inner tube; 11. Energy-absorbing outer tube; 12. Energy-absorbing film; 2. Film; 21. Rubber section. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0023] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0024] Please refer to the attached Figure 1 To Attachment Figure 3 The utility model describes an energy absorber.
[0025] See also Figure 1 During the molding process of the test product, the energy-absorbing film 12 is first produced and cut into dimensions of 73mm in width and 6mm in thickness. After cutting, each piece of the energy-absorbing film 12 is wound onto the inner core. Every time 2 to 3 layers of the energy-absorbing film are wound, they are tightened once with a pressure roller or a water-wrapped cloth. During this period, the air is exhausted several times. The core and the outer cylinder after the wrapping are assembled into a mold, assembled into a mold, and pressed into shape. Finally, a vulcanization treatment is performed to ensure the quality of the finished product. After the product is pressed and formed, rubber bubbles appear in many places on the outer surface of the product, which cannot meet the use requirements.
[0026] Based on the above technical shortcomings and deficiencies, three plans are formulated: the first is to increase the cross-sectional area of the pressed film, and use a rectangular film (100mmX12mm) to wrap it around the inner core; the second is to change the shape of the film and use a fan-shaped film. The radius of the first layer is the outer diameter of the inner tube and the thickness is 12mm. The radius of the second layer is the outer diameter of the first layer and the thickness is also 12mm. This continues until the last layer is the inner diameter of the outer tube, which is wrapped around the inner core layer by layer; the third is to use a brand-new process to divide the cross-sectional area of the energy absorber rubber filling into 8 equal parts with the same length as required by the energy absorber, that is, the film is directly formed and then laid flat on the inner core with only 8 overlapping gaps.
[0027] The above method was used to re-mold three test pieces, with the same vulcanization temperature and time. The above products were then inspected for appearance and subjected to tensile tests, as shown in the following table.
[0028]
[0029]
[0030] Data comparison and analysis:
[0031] From the comparison of the above test data, it can be seen that the above three methods can effectively improve the bubble situation of the product, which is consistent with the previous analysis results. The performance of the rubber has been improved, the hardness can meet the technical requirements, the tensile strength has increased by 10%, and the elongation at break has increased by 30%.
[0032] From the above data, it can be seen that the bubbles are improved in the first method, but it still cannot meet the use requirements of the product appearance, and the test data values are not very good, so the first method cannot be used.
[0033] Although the second method has a tiny bubble, it can meet the appearance requirements of the product by strict control in the subsequent production process, and the test data can also meet the technical index requirements. However, if the process control is not good, there will still be unqualified products, reducing the yield rate of the product. The production process still requires multiple extrusion exhausts, which consumes manpower and material resources, which is equivalent to increasing the production cost of the product. Comprehensive analysis shows that the second method is not adopted.
[0034] The third method uses film to form directly, and lays it directly on the inner core according to the cross-sectional shape, with minimal overlapping gaps, reducing multiple winding exhaust and roller pressing during the production process. The process is relatively simple and easy to operate, which improves production efficiency and yield rate. The measured data can also meet the product performance requirements very well. The measured data from both theory and experiments can meet the needs, which is more conducive to cost savings and long-term development of the enterprise. In summary, it was decided to adopt the third method.
[0035] See also Figure 2 Therefore, the energy absorber includes an energy absorbing outer tube 11, an energy absorbing inner tube 1 is arranged inside the energy absorbing outer tube 11, an energy absorbing filling cavity is arranged between the energy absorbing outer tube 11 and the energy absorbing inner tube 1, a film 2 is laid flat in the energy absorbing filling cavity, the cross-sectional area of the film 2 is the same as the cross-sectional area of the energy absorbing filling cavity, and the film 2 is bonded to the energy absorbing filling cavity; by laying the film 2 flat in the energy absorbing filling cavity, and the cross-sectional area of the film 2 is the same as the cross-sectional area of the energy absorbing filling cavity, the multiple winding exhaust and pressing rollers in the production process are reduced, the process method is relatively simple and easy to operate, the production efficiency and yield rate are improved, and the measured data can also well meet the product performance requirements.
[0036] The preferred connection method between the film 2 and the energy-absorbing filling cavity is bonding. In other embodiments of the present invention, snap-fitting may also be used as long as the film 2 and the energy-absorbing filling cavity can be fixed.
[0037] Preferably, there are multiple films 2, and the multiple films 2 are bonded to each other.
[0038] The connection between the multiple films 2 is preferably by bonding. In other embodiments of the present invention, they can also be connected by snapping, as long as the films 2 can be fixed to each other.
[0039] The film 2 is annular, the inner end of the film 2 fits with the energy absorbing inner tube 1, and the outer end of the film 2 fits with the energy absorbing outer tube 11; by setting the film 2 to be annular, the effect of matching the shape of the film 2 with the energy absorbing filling cavity is achieved.
[0040] See also Figure 3 The film 2 includes a rubber segment 21, and the rubber segment 21 is arranged in an array with the energy-absorbing inner tube 1 as the center. The rubber segment 21 is laid flat in the energy-absorbing filling cavity, and the inner end of the rubber segment 21 is in contact with the energy-absorbing inner tube 1, and the outer end of the rubber segment 21 is in contact with the energy-absorbing outer tube 11; overlapping gaps are provided between adjacent rubber segments 21; by providing overlapping gaps between adjacent rubber segments 21, the rubber segments 21 are connected into a whole.
[0041] The specific number of the rubber segments 21 is eight, and the sizes of the rubber segments 21 are the same. By setting the specific number of the rubber segments 21 to eight, one eighth of the film 2 is divided equally into the rubber segments 21 .
[0042] The specific number of the adhesive segments 21 is preferably eight. In other embodiments of the present invention, the number may be six or ten, etc., as long as the adhesive segments 21 can be overlapped to form the adhesive sheet 2 .
[0043] The rubber segment 21 is integrally formed; the rubber segment 21 is fan-shaped.
[0044] The utility model has fewer overlapping gaps and reduces multiple winding exhaust and roller pressing during the production process. The process method is relatively simple and easy to operate, which improves production efficiency and yield rate. The measured data can also meet the product performance requirements well. The measured data from theory and experiments can meet the needs, which is more conducive to cost saving and long-term development of the enterprise.
[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. An energy absorber, characterized in that: It comprises an energy absorbing outer tube, an energy absorbing inner tube is arranged inside the energy absorbing outer tube, an energy absorbing filling cavity is arranged between the energy absorbing outer tube and the energy absorbing inner tube, a film is laid in the energy absorbing filling cavity, the cross-sectional area of the film is the same as the cross-sectional area of the energy absorbing filling cavity, and the film is bonded to the energy absorbing filling cavity.
2. An energy absorber according to claim 1, characterized in that: The specific number of films is multiple, and the multiple films are bonded together.
3. An energy absorber according to claim 1 or 2, characterized in that: The film is ring-shaped, the inner end of the film is in contact with the energy-absorbing inner tube, and the outer end of the film is in contact with the energy-absorbing outer tube.
4. The energy absorber according to claim 1, characterized in that: The film comprises rubber segments, which are arranged in an array with the energy-absorbing inner tube as the center of a circle, and the rubber segments are spread flat in the energy-absorbing filling cavity.
5. An energy absorber according to claim 4, characterized in that: The inner end of the rubber segment is fitted with the energy absorbing inner tube, and the outer end of the rubber segment is fitted with the energy absorbing outer tube.
6. An energy absorber according to claim 4, characterized in that: Overlap gaps are provided between adjacent rubber sections.
7. An energy absorber according to claim 6, characterized in that: The specific number of the rubber segments is eight, and each rubber segment has the same size.
8. The energy absorber according to claim 4, characterized in that: The rubber section is formed in one piece.
9. An energy absorber according to claim 4, characterized in that: The rubber segment is fan-shaped.
10. The energy absorber according to claim 1, characterized in that: The energy absorbing outer tube and the energy absorbing inner tube are located on the same axis.