CN116901022A - Special multi-channel integrally-formed composite material working box and manufacturing method thereof - Google Patents
Special multi-channel integrally-formed composite material working box and manufacturing method thereof Download PDFInfo
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- CN116901022A CN116901022A CN202311081299.3A CN202311081299A CN116901022A CN 116901022 A CN116901022 A CN 116901022A CN 202311081299 A CN202311081299 A CN 202311081299A CN 116901022 A CN116901022 A CN 116901022A
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- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 28
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 22
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 4
- 238000007723 die pressing method Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 53
- 238000004321 preservation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 239000003365 glass fiber Substances 0.000 description 5
- 239000006261 foam material Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
- B25H3/02—Boxes
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7126—Containers; Packaging elements or accessories, Packages large, e.g. for bulk storage
Abstract
The invention discloses a multi-channel integrally-formed composite material special operation box which comprises a plurality of box bodies which are arranged in a combined mode, wherein protruding blocks are arranged on four surfaces of each box body, and the lower bottom edge of a trapezoid is attached to the side face of the box body. The manufacturing method comprises the following steps: the method comprises the steps of paving a first layer of woven fiber cloth on the inner surface of a die and compacting and forming, filling polyurethane foam raw materials in grooves of the die, winding a second layer of fiber yarns on the first layer of the composite material and the polyurethane foam respectively, combining the two layers of the composite material and the polyurethane foam to obtain a multi-channel combined structure, vacuumizing, compacting, solidifying and forming, and demolding to obtain the special composite material working box. The special operation box has the characteristics of light weight, high strength, excellent wave transmission performance, excellent heat preservation and insulation performance and the like, and the manufacturing method is simple for manufacturing the multi-channel, small-caliber, large-length-diameter-ratio and thin-wall composite material special operation box, and the manufactured box body composite material has strong interlayer bonding effect and good air tightness.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a special multi-channel integrally-formed composite material working box and a manufacturing method thereof.
Background
The special operation box has the main functions of: 1. as a storage box, an inflation and detection device is arranged in the box, and is filled with dry air or nitrogen, so that the service life of special equipment in the box can be prolonged after the storage box is sealed; 2. as a transport case, special equipment is assembled on a supporting or hanging guide rail in the case, and the special equipment is prevented from being damaged due to external factors such as impact, vibration and the like in transportation by utilizing a locking and limiting device; 3. as a special operation box, an operation guide rail, a locking limiting device and a cable falling mechanism are arranged in the box and are connected with operation equipment through cables, and the special operation box has the functions of checking before operation and special operation. The traditional special working box is mostly made of metal materials such as steel, aluminum alloy and the like, and has the defects of high weight, low strength and the like.
The Chinese patent publication No. CN116231163A discloses a lightweight heat-insulating battery box body, which comprises a glass fiber inner panel and a glass fiber outer panel arranged on the periphery of the glass fiber inner panel, wherein a sandwich plate is arranged between the glass fiber inner panel and the glass fiber outer panel. The preparation process and the prefabrication system of the lightweight heat-preservation battery box body are further included. The invention improves the heat preservation and shock resistance effect of the box body, and simultaneously adopts a preforming process for the sandwich foam material, so that the foam material has a simple structure, the waste of the foam material is reduced, the precision in cutting the foam material is simplified, the product consistency is better, and the fiber composite material is paved through simple rotating and moving actions by double-line movement of the preforming die and the conveying device. The box body is made of composite materials, but the process is not applicable to special operation boxes with complex structures.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a special multi-channel integrally-formed composite material working box and a manufacturing method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a special multi-channel integrally-formed composite material working box comprises a plurality of box bodies which are arranged in a combined mode, wherein protruding blocks are arranged on four side faces of the box bodies, the protruding blocks are in an irregular trapezoid shape, and the lower bottom edges of the trapezoids are attached to the side faces of the box bodies.
Preferably, the four lugs of the box body form channels in the box body, and a plurality of box bodies are combined to form the multi-channel operation box.
A manufacturing method of a special multi-channel integrally-formed composite material working box is characterized by comprising the following steps of: the method comprises the following steps:
step 1: spreading a first layer of woven fiber cloth on the inner surface of a die, compacting the first layer of woven fiber cloth by using a die pressing tool, and then performing vacuum auxiliary forming to obtain a first layer of composite material;
step 2: filling polyurethane foam raw materials in the grooves of the mould, foaming the polyurethane foam on the first layer of the composite material, and removing redundant bulges after the polyurethane foam is formed, wherein only the polyurethane foam in the grooves is reserved;
step 3: winding the second layer of fiber yarns on the first layer of the composite material and the polyurethane foam respectively to obtain a second layer of the composite material;
step 4: combining the four boxes into a two-layer two-row multi-channel combined structure by using a tool, bonding contact surfaces among channels, winding a third layer of fiber yarns on a second layer of the composite material, sleeving a vacuum bag, vacuumizing and compacting, and then curing and forming the second layer of the composite material and the third layer of fiber yarns together to obtain a third layer of the composite material;
step 5: and separating the third layer of the composite material from the mould to obtain the special working box of the composite material.
Preferably, the step 1 is performed with the pre-compaction tool by the first layer of woven fiber cloth and the die, and the repeated operation is performed with vacuum compaction and solidification after no less than three times.
Preferably, the foaming temperature of the polyurethane foam in the step 2 is 20-40 ℃.
Preferably, the second layer of fiber yarns and the third layer of fiber yarns in the step 3 and the step 4 are coated with epoxy resin materials before being wound, the second layer of fiber yarns are wound in a circumferential direction, and the third layer of fiber yarns are wound alternately around the channel.
Preferably, the tooling in the step 4 is adjusted according to the combined box size.
Preferably, in the step 4, during the channel combination molding process, the gap at the joint of the vertex angle is filled with a resin material, and the resin material is a medium-temperature cured epoxy resin.
Preferably, the multi-channel combination formed by the four box combinations in the step 4 includes, but is not limited to, four channels formed by four boxes, six channels formed by six boxes, and eight channels formed by eight boxes.
Preferably, the curing and molding process in the step 1 and the step 4 is as follows: curing for 3-8 hours at 70-150 ℃.
Compared with the prior art, the invention has the following advantages:
1. the special operation box made of the composite material has the characteristics of light weight, high strength, excellent wave transmission performance, excellent heat preservation and insulation performance and the like, and when special equipment is operated, high-temperature gas generated by an engine can cause high-temperature scouring ablation on the inner wall of the box, so that the high-temperature resistant fiber cloth arranged on the inner layer of the box can protect the box body.
2. The manufacturing method is simple for manufacturing the special working box made of the composite materials with multiple channels, small caliber, large length-diameter ratio and thin wall, and the manufactured box body composite material has strong interlayer bonding effect and good air tightness.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a diagram showing the arrangement of special working channels during the molding of a composite material according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
in the figure, 1-a first special operation channel; 2-a second special operation channel; 3-a third special operation channel; 4-a fourth special operation channel; 5-polyurethane foam; 6-a first layer of woven fiber cloth; 7-a second layer of fiber yarns; 8-third layer fiber yarn; 9-resin material.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this invention pertains are included within the scope of the present invention without departing from the above technical idea of the invention.
Examples: the pre-treatment mold is used for treatment, and the mold release wax is uniformly coated on each molding mold, wherein the thickness is not more than 0.01mm;
step 1: the first layer of woven fiber cloth 6 is formed, comprising: laying a first layer of woven fiber cloth 6 on the surface of a mould; compacting the fiber cloth by using a mould pressing tool, repeating the process for three times, and pasting the fiber cloth with a mould at intervals of 15-30 min each time; vacuum bag is sleeved for vacuum compaction, the extraction pressure is 0.1MPa, and curing is carried out for 4 hours at 135 ℃. The first layer of woven fiber cloth 6 is paved on the surface of the die, so that the cost is reduced, the bonding strength of the filling material and the composite material is improved, the degree of tightness of the first layer of woven fiber cloth 6 and the die is directly used for determining the forming precision of the guide rail, and the first layer of woven fiber cloth 6 is paved, pre-compacted in a three-time die pressing tool and then vacuumized and solidified, so that the precision is ensured.
Step 2: polyurethane foam 5 is molded, comprising: filling polyurethane foam 5 raw material on a first layer of composite material at a groove of a die, and controlling the foaming temperature to be 24 ℃; after foam molding, the excess protrusions are cut off using a blade, leaving only the polyurethane foam 5 in the grooves. The polyurethane foam 5 is directly filled and foamed on the first layer of the composite material at the groove of the die, and for a special working box made of the thin-wall composite material, the method can obviously reduce the demolding difficulty, improve the molding precision and is simpler to operate; the foaming temperature of the polyurethane foam 5 is strictly controlled, the foam strength is reduced due to the fact that the temperature is too high, and the appearance quality of the special operation box is affected due to the fact that the sinking occurs in the subsequent vacuumizing and curing process; while too low a temperature increases the density of the polyurethane foam 5, thereby affecting the weight of the special working box.
Step 3: forming the second layer of fiber yarns 7: winding a second layer of fiber yarns 7 on the first layer of the composite material and the polyurethane foam 5 respectively, wherein the second layer of fiber yarns 7 are coated with epoxy resin materials during winding, so that the winding angle and the axis of a special operation guide rail form a 90-degree annular direction, the width of the second layer of fiber yarns 7 is 10mm, and the lap joint width is 1mm; a second layer of composite material is obtained.
Step 4: the third layer of fiber yarn 8 is formed, comprising: combining the four boxes into a two-layer two-row structure by using a tool, adjusting the assembly size of the tool to enable the contact surfaces between the boxes to be jointed, filling resin materials 9 in gaps at joint positions of the top angles, and strictly prohibiting the occurrence of the gaps; winding a third layer of fiber yarns 8 on the combined second layer of the composite material, and coating epoxy resin materials on the third layer of fiber yarns 8 during winding to ensure that the winding angle is alternated with the axis of the special operation guide rail to be +56 degrees and-56 degrees, wherein the width of the third layer of fiber yarns 8 is 10mm; sleeving a vacuum bag, vacuumizing and compacting, extracting under the pressure of 0.1MPa, and keeping the second layer of fiber yarns 7 and the third layer of fiber yarns 8 at 120 ℃ for 3 hours for co-curing and forming to obtain a first special operation channel 1, a second special operation channel 2, a third special operation channel 3 and a fourth special operation channel 4 shown in figure 1;
the combined tool has an adjusting function so as to adapt to the dimensional change of the composite material after being molded, and the situation that the bonding is too tight or gaps exist is avoided; the second layer of fiber yarns 7 and the third layer of fiber yarns 8 are co-cured and formed so as to ensure that the interfaces of the second layer of fiber yarns 7 are tightly connected at the joint surface between channels, and simultaneously ensure that the interfaces of the second layer of fiber yarns 7 and the third layer of fiber yarns 8 are tightly connected, thereby avoiding layering phenomenon and ensuring excellent airtight performance of the special operation box.
Step 5: and (3) demolding a product: and pressurizing the product and the die along the demolding direction opposite to the special operation direction by using a hydraulic tension machine, so that the product and the die are separated along the axis direction of the guide rail and slowly pulled out, and the special operation box made of the composite material is obtained.
The invention provides a multi-channel integrally formed composite material special working box and a manufacturing method thereof, and specific examples are applied to illustrate the structure and the working principle of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present invention without departing from the principles of the invention, and such improvements and modifications fall within the scope of the appended claims.
Claims (10)
1. A special operation box made of a multi-channel integrally formed composite material is characterized in that: the novel box comprises a plurality of box bodies which are arranged in a combined mode, wherein protruding blocks are arranged on four side faces of the box bodies, the protruding blocks are in an irregular trapezoid shape, and the lower bottom edge of the trapezoid is attached to the side face of the box body.
2. The multi-channel integrally formed composite material specialty work box of claim 1, wherein: the four lugs of the box body form channels in the box body, and a plurality of box bodies are combined to form the multi-channel operation box.
3. A method for manufacturing the multi-channel integrally formed composite material special working box as claimed in claim 1 or 2, which is characterized in that: the method comprises the following steps:
step 1: spreading a first layer of woven fiber cloth (6) on the inner surface of a die, compacting the first layer of woven fiber cloth (6) by using a die pressing tool, and then performing vacuum auxiliary forming to obtain a first layer of composite material;
step 2: filling polyurethane foam (5) raw materials into the grooves of the die, foaming the polyurethane foam (5) on the first layer of the composite material, and removing redundant bulges after molding, wherein only the polyurethane foam (5) in the grooves is reserved;
step 3: winding a second layer of fiber yarns (7) on the first layer of the composite material and the polyurethane foam (5) respectively to obtain a second layer of the composite material;
step 4: combining the four boxes into a two-layer two-row multi-channel combined structure by using a tool, bonding contact surfaces among channels, winding a third-layer fiber yarn (8) on a second layer of the composite material, sleeving a vacuum bag, vacuumizing and compacting, and then curing and molding the second layer of the composite material and the third-layer fiber yarn (8) together to obtain a third layer of the composite material;
step 5: and separating the third layer of the composite material from the mould to obtain the special working box of the composite material.
4. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: and (3) pre-compacting the first layer of woven fiber cloth (6) and the die by using the die pressing tool in the step (1), and performing vacuum compaction and solidification after repeated operation for not less than three times.
5. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: the foaming temperature of the polyurethane foam (5) in the step 2 is 20-40 ℃.
6. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: the second layer of fiber yarns (7) and the third layer of fiber yarns (8) in the step 3 and the step 4 are coated with epoxy resin materials before being wound, the second layer of fiber yarns (7) are wound in a circumferential direction, and the third layer of fiber yarns (8) are wound alternately around the channel.
7. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: and 4, adjusting the tool in the step according to the combined box body size.
8. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: and (3) filling a resin material (9) in a gap at the joint of the vertex angles when the channel combination forming process is carried out in the step (4), wherein the resin material (9) is medium-temperature cured epoxy resin.
9. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: the multi-channel combination formed by the four box combinations in the step 4 comprises, but is not limited to, four channels formed by four boxes, six channels formed by six boxes and eight channels formed by eight boxes.
10. The method for manufacturing the multi-channel integrally formed composite material special working box according to claim 3, wherein the method comprises the following steps of: the curing and forming process in the step 1 and the step 4 is as follows: curing for 3-8 hours at 70-150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311081299.3A CN116901022A (en) | 2023-08-25 | 2023-08-25 | Special multi-channel integrally-formed composite material working box and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311081299.3A CN116901022A (en) | 2023-08-25 | 2023-08-25 | Special multi-channel integrally-formed composite material working box and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116901022A true CN116901022A (en) | 2023-10-20 |
Family
ID=88360398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311081299.3A Pending CN116901022A (en) | 2023-08-25 | 2023-08-25 | Special multi-channel integrally-formed composite material working box and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116901022A (en) |
-
2023
- 2023-08-25 CN CN202311081299.3A patent/CN116901022A/en active Pending
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