CN117301386A - Frame production process - Google Patents
Frame production process Download PDFInfo
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- CN117301386A CN117301386A CN202311198060.4A CN202311198060A CN117301386A CN 117301386 A CN117301386 A CN 117301386A CN 202311198060 A CN202311198060 A CN 202311198060A CN 117301386 A CN117301386 A CN 117301386A
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- die
- frame
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- temperature
- production process
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 74
- 239000004593 Epoxy Substances 0.000 claims abstract description 62
- 239000003292 glue Substances 0.000 claims abstract description 61
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 50
- 229920006335 epoxy glue Polymers 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- 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
-
- 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
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- 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
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- 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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5223—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a frame production process, which relates to the technical field of vehicles and aims at solving the problems that the whole frame is produced in a cutting and splicing mode, and in this way, the whole frame is produced in a manner of lacking in precision in control, the produced frame structure is not accurate enough, and more defective products are easy to occur, and the technical scheme is as follows: step 1, preparing materials, namely selecting pipes, dies and epoxy fiber glue for connection required by a frame; step 2, primarily processing, namely processing a cutting bevel angle and an arc surface of the pipe; step 3, opening the mould and uniformly smearing a release agent in the mould; and step 4, embedding the pipe into a mould for preheating, and enabling the surface temperature of the mould to reach 30-35 ℃. According to the invention, on the basis of the production of the frame by matching the mold with the mold, the frame can be formed in a shorter time by the change of the mold and the epoxy fiber adhesive in a high-temperature and high-pressure environment, and in addition, the structure of the frame can be limited, so that the frame is not easy to deform, and accurate connection is maintained.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle frame production process.
Background
Electric bicycle, bicycle are the comparatively instrument of riding instead of walk that often used at present people, because of its convenient to use, with low costs, popular people, its structure mainly includes frame, saddle, handlebar, wheel and chain transmission structure.
The frame is used as the main structure of the whole bicycle, and the production of the frame is realized by a combined bicycle frame preparation method with the application number of CN201110069897.X, for example, the technical key points are that the method comprises the following steps: (1) Manufacturing a frame fitting, wherein the frame fitting comprises a frame pipe fitting and a joint, and the frame pipe fitting comprises an upper pipe, a rear upper fork, a rear lower fork, a lower pipe and a middle pipe of aluminum alloy; the joint comprises a magnesium alloy head pipe joint, a middle pipe joint and a five-way joint; (2) surface treatment of frame fittings; (3) The frame pipe fitting and the joint are glued and formed, and the method comprises the following steps: 3.1 Drying the frame pipe fitting and the joint to remove surface moisture; 3.2 Fixing each joint by using a die; 3.3 Epoxy resin is coated on the connecting end of the frame pipe fitting and the joint, the thickness of the epoxy resin film is 0.1-0.15 mm, and the humidity is 15-25%; then, the frame pipe fitting is inserted and connected on the joint, the upper pipe is respectively inserted and connected with the head pipe joint and the middle pipe joint, the lower pipe is respectively inserted and connected with the head pipe joint and the five-way joint, the rear upper fork is inserted and connected with the middle pipe joint, the rear lower fork is inserted and connected with the five-way joint, the middle pipe is respectively inserted and connected with the middle pipe joint and the five-way joint, and the rear upper fork is connected with the rear lower fork through a hook claw to finally form the bicycle frame; 3.4 Drying and shaping the bicycle frame for 40-50 minutes at 140-150 ℃;3.5 The joint overlap joint position of the frame pipe fitting and the joint is subjected to soil filling; (4) polishing the frame; (5) baking varnish is carried out on the surface of the frame; the step (2) comprises grinding and polishing the frame pipe fitting; carrying out heat treatment on the frame pipe fitting; performing involucra treatment on the surface of the frame pipe fitting; performing sand blasting on the inner wall of the frame pipe fitting interface; cleaning the joint; ED treatment is carried out on the joint surface; performing sand blasting on the outer wall of the joint connection part; in the step (3), the epoxy resin is internally mixed with a hardener and acrylonitrile, and the epoxy resin comprises the following components in parts by weight: hardening agent: acrylonitrile=100:80:2.
The whole frame is produced mainly through cutting and splicing, and thus the whole frame is produced in a lack of precision in control, the produced frame structure is not accurate enough, and more defective products are easy to occur.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a vehicle frame production process.
The technical aim of the invention is realized by the following technical scheme: a production process of a vehicle frame comprises the following steps,
step 1, preparing materials, namely selecting pipes, dies and epoxy fiber glue for connection required by a frame;
step 2, primarily processing, namely processing a cutting bevel angle and an arc surface of the pipe;
step 3, opening the mould and uniformly smearing a release agent in the mould;
step 4, embedding the pipe into a die for preheating, so that the surface temperature of the die reaches 30-35 ℃;
step 5, distributing a plurality of parts of epoxy fiber glue according to the quantity required by pipe connection, and heating to soften;
step 6, placing the softened epoxy fiber glue into a preheated mold, and enabling the epoxy fiber glue to be positioned at the joint of the pipes, wherein the mold is in a non-sealing state at the moment, and the whole mold is heated for the first time;
step 7, after the primary heating is finished, adjusting the inside of the die to be in a pressurized state, and carrying out secondary heating on the whole die;
step 8, cooling and demolding to form a head pipe fitting, a triangular piece and a rear fork piece;
and 9, forming the frame by the splicing head pipe fitting, the triangular piece and the rear fork piece.
Through adopting above-mentioned technical scheme, through setting up above-mentioned technology, thereby make people can be through the cooperation of mould and tubular product, the connection between the tubular product carries out stable location, avoid appearing the inaccurate condition of manual positioning, in addition, accomplish between each step and just go on simultaneously that can go on simultaneously, save time, still carry out first heating and secondary heating to the mould that has added the epoxy fiber glue after softening, in order to guarantee that the bubble can not appear in the mould after the epoxy fiber glue heating melts in the mould, in addition can also make epoxy fiber glue can solidify under this condition in extreme time through building the environment of high temperature high pressure, thereby accelerate the efficiency of whole frame production, need not to wait for epoxy glue to take several hours just can solidify, make the production efficiency of whole frame obtain the promotion by a wide margin.
The invention is further provided with: the epoxy fiber glue is prepared by short fibers and epoxy glue in a ratio of 1:0.45.
By adopting the technical scheme, the epoxy fiber glue is formed by proportioning the short fibers and the epoxy glue, the proportion of the epoxy fiber glue is 1:0.45, so that the epoxy fiber glue is in a state of more short fibers and less epoxy glue, but the effect of main connection is achieved mainly by means of the epoxy glue in the final connection, so that the short fibers mainly play a role in the process, the short fibers have certain strength and toughness, when the mixture formed after the short fibers and the epoxy glue are mixed is dried, the short fibers can form a fiber network structure in the mixture, the overall strength and the stability of the epoxy glue after the drying are improved, the shrinkage and the cracking of the epoxy glue are reduced by adding the short fibers, the movement and the structural change of the epoxy glue can be blocked by the short fibers, and the shrinkage and the crack formation possibly occurring in the drying process are reduced, and the finally formed epoxy fiber glue is more firm and not easy to fracture when the finally formed epoxy fiber glue is used for pipe connection.
The invention is further provided with: and 4, when the pipe is embedded into the die, the die is required to be matched and stitched.
Through adopting above-mentioned technical scheme, because the mould requires the compound die joint, so the mould can play better spacing to tubular product to and ensure that there is comparatively sufficient area of contact between mould and the tubular product, ensure that the mould when carrying out follow-up heating, can make the action that has great area of contact to carry out heat exchange between mould and the tubular product, make the tubular product can be in a certain time abundant and sufficient obtain the heating, improve holistic work efficiency.
The invention is further provided with: and 4, preheating the die by a heating rod, wherein a reserved hole site recessed into the die is formed in the surface of the die, and the heating rod extends into the reserved hole site for heating.
Through adopting above-mentioned technical scheme, because the mould preheats through the heating rod to set up on the surface of mould and sunken to its inside reserved hole site, the heating rod extends to in the reserved hole site and heats, thereby make when the mould heats, the heating rod can be from the inside of mould to with heat transfer from interior to exterior, ensure that whole mould can both be heated thoroughly, also can ensure simultaneously that the heating rod is when heat transfer to each position as the heat source, all is the shortest temporary swift distance for the efficiency of whole technology obtains promoting.
The invention is further provided with: and 5, heating the epoxy fiber glue in the step 5 by an oven, wherein the heating temperature is 75-80 ℃, and the temperature is kept for 10-15min.
By adopting the technical scheme, as the heating temperature of the epoxy fiber glue is 75-80 ℃ and the temperature is kept for 10-15min, people can ensure that the epoxy fiber glue is fully heated and fully softened, so that the situation that the epoxy fiber glue cannot adapt to a special-shaped space can not occur when the epoxy fiber glue is subsequently plugged into a die, the placing action of the epoxy fiber glue becomes easier and simpler, and the epoxy fiber glue can be processed without thoroughly changing into a molten state.
The invention is further provided with: the first heating in the step 6 is carried out by an oven, and the temperature is 150 ℃, and the temperature is kept for 15-20min.
By adopting the technical scheme, the temperature of the epoxy fiber glue in the die for first heating is 150 ℃, and the temperature is kept for 15-20min, so that the epoxy fiber glue can be melted in a short time and is converted into a liquid state, and in the process, the redundant gas in the die and the redundant gas after the epoxy fiber glue is melted are removed, so that bubbles are prevented from being formed in the die after the epoxy fiber glue is melted and solidified, and the connection strength of the epoxy fiber glue to the pipe is prevented from being influenced.
The invention is further provided with: the secondary heating in the step 7 is also carried out by an oven, the temperature is 195-200 ℃, and the temperature is kept for 45-50min.
By adopting the technical scheme, the temperature of the epoxy fiber glue in the die for secondary heating is 195-200 ℃, and the temperature is kept for 45-50min, at this time, the epoxy fiber glue is in a high-temperature pressurized state, and at this time, the epoxy fiber glue can be solidified in a short time, so that the time of a few hours or even more than ten hours of common epoxy glue solidification can be shortened to less than one hour, and the overall working efficiency is greatly improved.
The invention is further provided with: the die is provided with a hole communicated with the inside of the die and used for placing epoxy fiber glue, an internal thread is arranged at the opening of the hole, a pressing block with external threads is connected in the hole through the internal thread, and the pressing block is arranged in a sealing manner with the hole when the top surface of the pressing block is level with the surface of the die.
Through adopting above-mentioned technical scheme, when the mould need be adjusted to non-sealing state or pressurization state, only need make the briquetting accomplish through external screw thread and internal screw thread in the hole submergence or rising the action can, can make the briquetting become the non-sealing state with hole seal or external screw thread and internal screw thread non-interlock at this moment, make things convenient for people's actual operation.
In summary, the invention has the following beneficial effects:
according to the invention, by arranging the process, people can stably position the connection between the pipes through the cooperation of the mold and the pipes, the condition of inaccurate manual positioning is avoided, in addition, all the steps can be performed simultaneously, time is saved, the mold added with the softened epoxy fiber glue is heated for the first time and heated for the second time, so that no bubbles are left in the mold after the epoxy fiber glue in the mold is heated and melted, in addition, the epoxy fiber glue can be solidified in extreme time under the condition by creating a high-temperature and high-pressure environment, the production efficiency of the whole frame is accelerated, the epoxy glue does not need to be solidified after waiting for a plurality of hours, and the production efficiency of the whole frame is greatly improved.
Drawings
Fig. 1 is a block diagram of the structure of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Examples:
a vehicle frame production process, as shown in figure 1, comprises the following steps,
step 1, preparing materials, namely a pipe, a die and epoxy fiber glue for connection, which are needed by a frame to be replaced, wherein the epoxy fiber glue is prepared by short fibers and epoxy glue in a ratio of 1:0.45, the pipe is a round pipe, and the pipe mainly needs one with an outer diameter of 50mm, an inner diameter of 44mm and a length of 305mm, one with an outer diameter of 50mm, an inner diameter of 44mm and a length of 150mm, one with an outer diameter of 40mm, an inner diameter of 34mm and a length of 345mm, two with an outer diameter of 24mm, an inner diameter of 18mm and a length of 200mm, and one with an outer diameter of 26mm, an inner diameter of 22mm and a length of 210 mm.
And 2, performing primary processing, namely processing the pipe, namely cutting the bevel angle and the cambered surface, wherein the processing is performed specifically according to the drawing requirements, so that when the pipe is required to be connected, the structure of the connection part is identical, and the problem of unmatched pipes after connection is avoided.
Step 3, the die is opened, the inside of the die is uniformly coated with a release agent, the release agent is coated mainly for the purpose that the follow-up epoxy fiber glue is not easy to adhere to the inside of the die, the condition that the pipe is adhered to the inside of the die after being heated in the die can be avoided, the release action of people is easier and simpler, and accordingly the working efficiency of people is improved.
And 4, embedding the pipe into the mold for preheating, wherein the mold is required to be clamped and joint when the pipe is embedded into the mold, the surface temperature of the mold reaches 30-35 ℃, the mold is preheated through a heating rod, a reserved hole site recessed into the mold is formed in the surface of the mold, the heating rod extends into the reserved hole site for heating, and the mold is heated through the soft heating rod, so that the heating rod can be drilled into the mold through the reserved hole site instead of the inside of the mold, the whole temperature of the mold can be increased, the condition of uneven temperature cannot occur, and meanwhile, the mold is preheated, so that the epoxy fiber glue can be heated and softened together, and the working efficiency of whole processing is improved.
Step 5, distributing a plurality of parts of epoxy fiber glue according to the required quantity of pipe connection, heating to soften, heating the epoxy fiber glue by an oven, wherein the heating temperature is 75-80 ℃, and preserving heat for 10-15min, the epoxy fiber glue is distributed in advance according to the required quantity of each part, so that the accurate quantity of the epoxy fiber glue can be ensured, the situation that materials are wasted is not easy to occur, in addition, the epoxy fiber glue is solid in a normal state although the proportion is completed, and is in a softened state by the heating means, so that people can put the epoxy fiber glue into the mold more easily when putting the epoxy fiber glue into the mold, and the epoxy fiber glue is more easy to adapt to special-shaped space environment 。
And 6, placing the softened epoxy fiber glue into a preheated mold, enabling the mold to be positioned at a pipe connection position, forming a hole which is communicated with the inside of the mold and used for placing the epoxy fiber glue, forming internal threads at an opening of the hole, connecting a pressing block with external threads in the hole through the internal threads, and sealing the pressing block and the hole when the top surface of the pressing block is level to the surface of the mold, wherein the inside of the mold is in a non-sealing state, the whole mold is heated for the first time, the first time is carried out through an oven, the temperature is 150 ℃, and the temperature is kept for 15-20min.
The epoxy fiber glue is heated and softened, the rear mold is preheated, and then the temperature of the mold can be raised faster when the mold is heated later, and in addition, the mold is provided with the holes communicated with the inside of the mold, so that when the epoxy fiber glue is heated in the mold, air bubbles and waste gas generated by heating can leave from the space between the internal threads which are not meshed and the pressing block with the external threads, and the air bubbles are prevented from being generated when the epoxy fiber glue is melted to connect the connecting parts of the pipes.
Step 7, after the primary heating is finished, the interior of the die is adjusted to be in a pressurized state, the whole die is subjected to secondary heating, the secondary heating is also performed through an oven, the temperature is 195-200 ℃, the temperature is kept for 45-50min, because the temperature of the secondary heating is higher, at the moment, a pressing block after the primary heating is finished is screwed into a hole through external threads and internal threads, the pressing block and the surface of the die are in a flush state, so that the hole can be sealed by the pressing block, at the moment, the die is in a closing and jointing state, the die does not reach a completely sealed state, but is in a relatively sealed state, the temperature is higher when the die is subjected to secondary heating, and the heat-preserving time is 45-50min, then the epoxy fiber glue in the die can be pressurized because of the rapid rise of temperature, and the complete sealing state is not achieved after the die is closed, so that the situation of air leakage still occurs after the air pressure rises, the air pressure in the die cannot be excessively large and damaged, and because of the environment of heating and pressurizing, the epoxy fiber glue can be rapidly solidified in a short time, so that the pipes can be rapidly connected together through the epoxy fiber glue without waiting for the slow solidification of the epoxy fiber glue, the solidification action can be completed from the fastest few hours to tens of minutes in the past, the overall efficiency is greatly improved, meanwhile, the connection between the pipes can be positioned through the die, and the finally obtained frame structure connection is more accurate.
Step 8, cooling and demolding to form a head pipe fitting, a triangular piece and a rear fork piece;
and 9, splicing the head pipe fitting, the triangular piece and the rear fork piece to form a frame, wherein the head pipe fitting is connected with the triangular piece through a folder, and the triangular piece is connected with the rear fork piece through a locking screw.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (8)
1. The production process of the vehicle frame is characterized by comprising the following steps of: comprises the following steps of the method,
step 1, preparing materials, namely selecting pipes, dies and epoxy fiber glue for connection required by a frame;
step 2, primarily processing, namely processing a cutting bevel angle and an arc surface of the pipe;
step 3, opening the mould and uniformly smearing a release agent in the mould;
step 4, embedding the pipe into a die for preheating, so that the surface temperature of the die reaches 30-35 ℃;
step 5, distributing a plurality of parts of epoxy fiber glue according to the quantity required by pipe connection, and heating to soften;
step 6, placing the softened epoxy fiber glue into a preheated mold, and enabling the epoxy fiber glue to be positioned at the joint of the pipes, wherein the mold is in a non-sealing state at the moment, and the whole mold is heated for the first time;
step 7, after the primary heating is finished, adjusting the inside of the die to be in a pressurized state, and carrying out secondary heating on the whole die;
step 8, cooling and demolding to form a head pipe fitting, a triangular piece and a rear fork piece;
and 9, forming the frame by the splicing head pipe fitting, the triangular piece and the rear fork piece.
2. A vehicle frame production process according to claim 1, wherein: the epoxy fiber glue is prepared by short fibers and epoxy glue in a ratio of 1:0.45.
3. A vehicle frame production process according to claim 1, wherein: and 4, when the pipe is embedded into the die, the die is required to be matched and stitched.
4. A vehicle frame production process according to claim 1, wherein: and 4, preheating the die by a heating rod, wherein a reserved hole site recessed into the die is formed in the surface of the die, and the heating rod extends into the reserved hole site for heating.
5. A vehicle frame production process according to claim 1, wherein: and 5, heating the epoxy fiber glue in the step 5 by an oven, wherein the heating temperature is 75-80 ℃, and the temperature is kept for 10-15min.
6. A vehicle frame production process according to claim 1, wherein: the first heating in the step 6 is carried out by an oven, and the temperature is 150 ℃, and the temperature is kept for 15-20min.
7. A vehicle frame production process according to claim 1, wherein: the secondary heating in the step 7 is also carried out by an oven, the temperature is 195-200 ℃, and the temperature is kept for 45-50min.
8. A vehicle frame production process according to claim 1, wherein: the die is provided with a hole communicated with the inside of the die and used for placing epoxy fiber glue, an internal thread is arranged at the opening of the hole, a pressing block with external threads is connected in the hole through the internal thread, and the pressing block is arranged in a sealing manner with the hole when the top surface of the pressing block is level with the surface of the die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311198060.4A CN117301386A (en) | 2023-09-16 | 2023-09-16 | Frame production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311198060.4A CN117301386A (en) | 2023-09-16 | 2023-09-16 | Frame production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117301386A true CN117301386A (en) | 2023-12-29 |
Family
ID=89249097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311198060.4A Pending CN117301386A (en) | 2023-09-16 | 2023-09-16 | Frame production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117301386A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308370A1 (en) * | 1993-03-16 | 1994-09-22 | M1 Sporttechnik Gmbh | Process and core body for producing a hollow molded or profile body made of fiber-reinforced plastic |
| JPH07276521A (en) * | 1994-04-14 | 1995-10-24 | Tonen Corp | Forming method of tubular material |
| US5853651A (en) * | 1995-09-07 | 1998-12-29 | Simula, Inc. | High pressure hollow process for manufacturing composite structures |
| KR200371946Y1 (en) * | 2004-10-13 | 2005-01-06 | 주식회사 유씨티 | Heating system of injecting mold for forming parts of cell phone |
| CN103448257A (en) * | 2013-08-28 | 2013-12-18 | 中国科学院福建物质结构研究所 | Method for forming fiber reinforced composite tube |
| WO2017203460A1 (en) * | 2016-05-26 | 2017-11-30 | Ego Cycles S.R.L. | Method of manufacturing a bicycle frame and bicycle made through said method |
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2023
- 2023-09-16 CN CN202311198060.4A patent/CN117301386A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308370A1 (en) * | 1993-03-16 | 1994-09-22 | M1 Sporttechnik Gmbh | Process and core body for producing a hollow molded or profile body made of fiber-reinforced plastic |
| JPH07276521A (en) * | 1994-04-14 | 1995-10-24 | Tonen Corp | Forming method of tubular material |
| US5853651A (en) * | 1995-09-07 | 1998-12-29 | Simula, Inc. | High pressure hollow process for manufacturing composite structures |
| KR200371946Y1 (en) * | 2004-10-13 | 2005-01-06 | 주식회사 유씨티 | Heating system of injecting mold for forming parts of cell phone |
| CN103448257A (en) * | 2013-08-28 | 2013-12-18 | 中国科学院福建物质结构研究所 | Method for forming fiber reinforced composite tube |
| WO2017203460A1 (en) * | 2016-05-26 | 2017-11-30 | Ego Cycles S.R.L. | Method of manufacturing a bicycle frame and bicycle made through said method |
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