Bicycle aluminum alloy vertical pipe forming equipment and forming process
Through the bicycle aluminum alloy riser forming equipment integrating extruder and flaw detector, the integration of molding and flaw detection is achieved, solving the problem that traditional equipment is difficult to produce special-shaped risers and untimely detection, meeting the diverse design needs of bicycles, and improving product pass rate and quality.
Patent Information
- Application Number
- CN202510457110.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-13
- Publication Date
- 2025-07-11
AI Technical Summary
Traditional bicycle aluminum alloy riser forming equipment is difficult to produce riser with special-shaped cavity, and separation of molding and flaw detection makes it difficult to detect defects in time, increasing production costs and waste of resources.
Integrate extruder, mold and flaw detector to achieve integration of molding and flaw detection, form cavity of different shapes through replaceable concave rods, and flaw detection and detection are real-time during the molding process.
It realizes the diversified design of bicycle risers, improves product qualification rate, reduces production costs, and ensures product quality reliability.
Smart Images
Figure CN120286522A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of aluminum alloy riser production equipment, and specifically relates to a bicycle aluminum alloy riser forming equipment and a forming process. Background Technique
[0002] With the development of the lightweight and personalized design of bicycles, the riser is required to have a cavity with a special shape to optimize the mechanical properties or meet the unique frame shape. Traditional equipment can often only produce aluminum alloy risers with cavities of fixed shapes, and it is difficult to meet the diverse design requirements of modern bicycles. Moreover, in the traditional forming process, forming and flaw detection are separate. This non-real-time detection method cannot detect defects that occur during the forming process in a timely manner, which may lead to the production of a large number of defective products, increasing production costs and wasting resources. Therefore, a bicycle aluminum alloy riser forming equipment and a forming process are proposed to solve this problem. Summary of the Invention
[0003] The purpose of the present invention is to provide a bicycle aluminum alloy riser forming equipment and a forming process to solve the problems raised in the above background technique.
[0004] To achieve the above purpose, the present invention provides the following technical solution: A bicycle aluminum alloy riser forming equipment, including an extruder, a mold mounting seat, and a cavity concave mold. An outlet cylinder is installed on the right side of the extruder, and the right end of the outlet cylinder is inserted into the mold mounting seat. A cavity concave mold is installed in the mold mounting seat, and a protective cover is also installed on the top of the mold mounting seat, and the protective cover is sleeved outside the cavity concave mold. The cavity concave mold is composed of a docking panel and a concave rod, and a forming mold is installed on the left side of the cavity concave mold. A forming cavity is horizontally opened in the middle of the forming mold, and the concave rod is horizontally inserted into the middle of the forming cavity. The outlet cylinder on the right side of the extruder is docked to the left end of the forming mold, and the blank is injected into the forming cavity in the forming mold by the extruder through the outlet cylinder. A flaw detector mounting seat is installed in the mold mounting seat, and the flaw detector mounting seat is arched and slidably sleeved outside the forming mold. A flaw detector is installed on the top of the flaw detector mounting seat.
[0005] Preferably, the docking panel abuts against the right side surface of the forming mold. Fixing bolts are screwed at the four corners of the docking panel, and fixing holes are opened at the four corners of the right end surface of the forming mold. The docking panel is fixed to the forming mold through the fixing bolts and the fixing holes.
[0006] Preferably, the concave rod further includes a rhombic concave rod. The two rod bodies can be used after replacement to form cavities with different shapes in the aluminum alloy riser products.
[0007] Preferably, moving motors are symmetrically installed on the front and rear sides of the flaw detector mounting base, and moving wheels are drivingly installed on the inner sides of the moving motors.
[0008] Preferably, the moving wheels are installed in the inner cavity of the flaw detector mounting base, and the bottoms of the moving wheels abut against the top surface of the mold mounting base; the two moving motors are synchronously driven to drive the flaw detector mounting base to displace along the forming mold.
[0009] Forming process: S1, Preparation stage: Install and debug each component of the extruder, the discharge barrel, the mold mounting base, the cavity concave mold and the forming mold to ensure that all parts of the equipment are firmly connected and operate normally; the docking accuracy of the discharge barrel with the mold mounting base and the forming mold, and the fixing of the docking panel of the cavity concave mold with the forming mold through the fixing bolts and fixing holes, ensure the smoothness of the blank injection channel and the structural stability of the forming mold; S2, Extrusion molding: Start the extruder and inject the aluminum alloy blank into the forming cavity of the forming mold through the discharge barrel; since the concave rod is horizontally inserted in the middle of the forming cavity, the injected aluminum alloy blank flows around the concave rod to fill, and an aluminum alloy riser blank with a cavity of a specific shape is initially formed in the forming cavity; during this process, control parameters such as the pressure and speed of the extruder to ensure that the aluminum alloy blank evenly fills the forming cavity and obtain a riser blank with good dimensional accuracy and surface quality; at the same time, according to the product design requirements, different types of concave rods can be selected for replacement installation to obtain aluminum alloy risers with cavities of different shapes; S3, Flaw detection: During the forming process of the aluminum alloy riser blank, start the flaw detector and the moving motors; the two moving motors synchronously drive the flaw detector mounting base to displace along the forming mold, so that the flaw detector can perform real-time flaw detection on different parts of the aluminum alloy riser being formed; the flaw detector is an ultrasonic flaw detector.
[0010] Compared with the prior art, the beneficial effects of the present invention are: This solution realizes the integrated operation of forming and flaw detection, and different-shaped cavities can be formed in the aluminum alloy riser products by using replaceable concave rods; this provides more possibilities for the design of bicycle risers and can meet different mechanical property requirements and product appearance designs; The flaw detector mounting base and the flaw detector are integrated in the equipment, and the flaw detector mounting base can move along the forming mold, and real-time flaw detection can be performed during the forming process of the aluminum alloy riser; this helps to timely detect defects such as cracks, pores, and inclusions inside the riser, avoid producing a large number of unqualified products, improve the first-pass yield rate of products, and reduce production costs; The flaw detector mounting seat drives the moving wheels through symmetrically mounted moving motors on the front and rear sides, and can displace along the forming die, ensuring a comprehensive flaw detection of the aluminum alloy riser pipe inside the entire forming die, without detection blind spots, and guaranteeing the reliability of product quality. Description of the Drawings
[0011] Figure 1 It is the front view of the present invention; Figure 2 It is the front view of the forming die of the present invention; Figure 3 It is the side view of the forming die of the present invention; Figure 4 It is multiple concave rods of the present invention; Figure 5 It is the schematic diagram of the moving motor of the present invention.
[0012] In the figure: 1 extruder, 2 discharge barrel, 3 die mounting seat, 4 cavity concave die, 5 docking panel, 6 fixing bolt, 7 forming die, 8 forming cavity, 9 fixing hole, 10 concave rod, 11 rhombic concave rod, 12 flaw detector mounting seat, 13 flaw detector, 14 moving motor, 15 moving wheel. Detailed Embodiment
[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0014] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Embodiment
[0015] Please refer to Figures 1-5 , the present invention provides the following technical solutions: A bicycle aluminum alloy riser pipe forming device includes an extruder 1, a die mounting seat 3, and a cavity concave die 4; a discharge barrel 2 is installed on the right side of the extruder 1, and the right end of the discharge barrel 2 is inserted into the die mounting seat 3; A cavity concave die 4 is installed inside the die mounting seat 3, and a protective cover is also installed on the top of the die mounting seat 3, and the protective cover is sleeved outside the cavity concave die 4; The cavity concave mold 4 is composed of a docking panel 5 and a concave rod 10. A forming mold 7 is installed on the left side of the cavity concave mold 4. A forming cavity 8 is horizontally opened in the middle of the forming mold 7, and the concave rod 10 is horizontally inserted into the exact middle of the forming cavity 8. The docking panel 5 abuts against the right side surface of the forming mold 7. Fixing bolts 6 are screwed at the four corners of the docking panel 5. Fixing holes 9 are opened at the four corners of the right end face of the forming mold 7. The docking panel 5 is fixed on the forming mold 7 through the fixing bolts 6 and the fixing holes 9. The discharge cylinder 2 on the right side of the extruder 1 is docked at the left end of the forming mold 7. The extruder 1 injects blank materials into the forming cavity 8 in the forming mold 7 through the discharge cylinder 2. The concave rod 10 further includes a rhombic concave rod 11. The two rod bodies can be used after replacement to form cavities with different shapes in the aluminum alloy vertical pipe products. A flaw detector mounting seat 12 is installed in the mold mounting seat 3. The flaw detector mounting seat 12 is arch-shaped and slidably sleeved on the outside of the forming mold 7. A flaw detector 13 is installed on the top of the flaw detector mounting seat 12. Moving motors 14 are symmetrically installed on the front and rear sides of the flaw detector mounting seat 12. Moving wheels 15 are drivingly installed on the inner sides of the moving motors 14. The moving wheels 15 are installed in the inner cavity of the flaw detector mounting seat 12, and the bottoms of the moving wheels 15 abut against the top surface of the mold mounting seat 3. The two moving motors 14 are synchronously driven to drive the flaw detector mounting seat 12 to displace along the forming mold 7. The extruder 1 serves as a power source to extrude the aluminum alloy blank materials through the discharge cylinder 2 on the right side. The right end of the discharge cylinder 2 is inserted into the mold mounting seat 3 and docked at the left end of the forming mold 7. When the extruder works, the aluminum alloy blank materials are injected into the forming cavity 8 horizontally opened in the middle of the forming mold 7 along the discharge cylinder 2. A concave rod 10 that can be inserted into the exact middle of the forming cavity 8 is provided in the forming mold 7. The concave rod 10 and the docking panel 5 form the cavity concave mold 4. The docking panel 5 abuts against the right side surface of the forming mold 7 and is fixed on the forming mold 7 through the cooperation of the fixing bolts 6 at the four corners and the fixing holes 9 at the four corners of the right end face of the forming mold 7 to ensure the structural stability. Since the concave rod 10 is located in the exact middle of the forming cavity 8, when the aluminum alloy blank materials are injected into the forming cavity 8, they flow around the concave rod 10 and form an aluminum alloy vertical pipe with a cavity after cooling. Moreover, the concave rod 10 has different types such as the rhombic concave rod 11. By replacing and using them, cavities with different shapes can be formed in the aluminum alloy vertical pipe products to meet different product design requirements. A flaw detector mounting seat 12 is installed in the mold mounting seat 3. It is arch-shaped and slidably sleeved on the outside of the forming mold 7. A flaw detector 13 is installed on the top of the flaw detector mounting seat to detect possible internal defects of the aluminum alloy vertical pipe during the forming process. Moving motors 14 are symmetrically installed on the front and rear sides of the flaw detector mounting base 12. The moving wheels 15 installed inside the moving motors 14 are located in the inner cavity of the flaw detector mounting base 12, and the bottom abuts against the top surface of the mold mounting base 3. The two moving motors 14 are synchronously driven to drive the flaw detector mounting base 12 to displace along the forming mold 7, so that the flaw detector 13 can perform flaw detection on different parts of the aluminum alloy riser during the forming process and timely detect possible quality problems.
[0016] A forming process for a bicycle aluminum alloy riser forming device: Preparation stage: Install and debug each component of the extruder 1, the discharge barrel 2, the mold mounting base 3, the cavity concave mold 4 and the forming mold 7 to ensure that all parts of the equipment are firmly connected and operate normally; the docking accuracy of the discharge barrel 2 with the mold mounting base 3 and the forming mold 7, and the fixing situation of the docking panel 5 of the cavity concave mold 4 with the forming mold 7 through the fixing bolts 6 and the fixing holes 9 to ensure the smoothness of the blank injection channel and the structural stability of the forming mold 7; Extrusion forming: Start the extruder 1 and inject the aluminum alloy blank into the forming cavity 8 of the forming mold 7 through the discharge barrel 2; since the concave rod 10 is horizontally inserted in the middle of the forming cavity 8, the injected aluminum alloy blank flows around the concave rod 10 and fills it, and a blank of an aluminum alloy riser with a cavity of a specific shape is initially formed in the forming cavity 8; during this process, control parameters such as the pressure and speed of the extruder to ensure that the aluminum alloy blank evenly fills the forming cavity 8 and obtain a riser blank with good dimensional accuracy and surface quality; at the same time, according to the product design requirements, different types of concave rods 10 can be selected for replacement installation to obtain aluminum alloy risers with cavities of different shapes; Flaw detection: During the forming process of the aluminum alloy riser blank, start the flaw detector 13 and the moving motors 14; the two moving motors 14 synchronously drive the flaw detector mounting base 12 to displace along the forming mold 7, so that the flaw detector 13 can perform real-time flaw detection on different parts of the aluminum alloy riser being formed; the flaw detector 13 is an ultrasonic flaw detector; Flaw detection principle: A piezoelectric transducer is installed in the ultrasonic flaw detector at the top of the flaw detector mounting base 12; under the excitation of the high-frequency electrical pulse generated by the circuit of the flaw detector 13, the piezoelectric transducer converts electrical energy into mechanical energy based on the piezoelectric effect, generates high-frequency mechanical vibrations, and then emits ultrasonic waves to the aluminum alloy riser being formed; these ultrasonic waves penetrate the coupling medium (such as air, liquid coupling agent, etc.) between the flaw detector 13 and the aluminum alloy riser at a specific frequency (such as 0.5 - 25 MHz), and are transmitted into the interior of the aluminum alloy riser; Ideally, if the internal material of the aluminum alloy riser is uniform and defect-free, ultrasonic waves will propagate in a straight line through the aluminum alloy medium at a relatively stable speed. However, when internal defects such as cracks, pores, and inclusions occur during the forming process of the aluminum alloy riser, due to the different acoustic impedances between the defects and the surrounding normal aluminum alloy material (acoustic impedance Z = ρc, where ρ is the medium density and c is the propagation speed of ultrasonic waves in the medium; for example, the inside of a pore is gas, whose density is much smaller than that of aluminum alloy, resulting in a large difference in acoustic impedance from the aluminum alloy matrix), when ultrasonic waves propagate to the interfaces of these defects, part of the ultrasonic waves will be reflected, refracted, and scattered. For ultrasonic waves vertically incident on the defect interface, due to the difference in acoustic impedance, part of them will be reflected back along the original path. The intensity of the reflected wave depends on the degree of difference in acoustic impedance between the defect and the aluminum alloy matrix. The greater the difference, the stronger the reflected wave. For example, pores or cracks of larger size will generate relatively strong reflected waves. The same piezoelectric transducer that emits ultrasonic waves, when receiving the ultrasonic waves reflected from the internal defects of the aluminum alloy riser, based on the inverse piezoelectric effect, converts the mechanical vibration of the reflected wave into an electrical signal again. The internal circuit of the flaw detector 13 amplifies this weak electrical signal converted from the reflected wave, enhances the signal intensity through a multi-stage amplification circuit for subsequent analysis. At the same time, a filtering circuit is used to remove the noise signals mixed in during the signal transmission process, making the flaw detection signal purer, clearer, and improving the quality and recognizability of the signal. The flaw detector 13 is externally connected with a display screen through a data cable. The electrical signal after amplification and filtering processing is displayed in the form of a waveform in real time on the display screen of the flaw detector 13. The flaw detection personnel or equipment operators can directly observe the waveform changes. On the display screen, there will be a start wave indicating the starting point of ultrasonic wave emission and a bottom wave indicating the reflection of ultrasonic waves on the bottom surface of the aluminum alloy riser. If there are defects inside the aluminum alloy riser during the forming process, additional reflected wave signals will appear between the start wave and the bottom wave on the display screen, based on which it can be judged that there are defects inside the aluminum alloy riser.
[0017] The above shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.
[0018] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An aluminum alloy bicycle seat tube forming device, comprising an extruder (1), a die mounting seat (3) and a cavity concave die (4), characterized in that: The discharge cylinder (2) is installed on the right side of the extruder (1), and the right end of the discharge cylinder (2) is inserted into the mold mounting base (3); a cavity concave mold (4) is installed in the mold mounting base (3), and a protective cover is also installed on the top of the mold mounting base (3), and the protective cover is sleeved outside the cavity concave mold (4); The cavity concave mold (4) is composed of a docking panel (5) and a concave rod (10), and a forming mold (7) is installed on the left side of the cavity concave mold (4). A forming cavity (8) is horizontally opened in the middle of the forming mold (7), and the concave rod (10) is horizontally inserted into the middle of the forming cavity (8); The discharge cylinder (2) on the right side of the extruder (1) is docked to the left end of the forming mold (7), and the blank is injected into the forming cavity (8) in the forming mold (7) by the extruder (1) through the discharge cylinder (2); a flaw detector mounting base (12) is installed in the mold mounting base (3), and the flaw detector mounting base (12) is arched and slidably sleeved outside the forming mold (7); a flaw detector (13) is installed on the top of the flaw detector mounting base (12).
2. The bicycle aluminum alloy riser forming device according to claim 1, characterized in that: The docking panel (5) abuts against the right side surface of the forming mold (7), and fixing bolts (6) are screwed at the four corners of the docking panel (5). Fixing holes (9) are opened at the four corners of the right end surface of the forming mold (7), and the docking panel (5) is fixed to the forming mold (7) through the fixing bolts (6) and the fixing holes (9).
3. A bicycle aluminum alloy riser forming device according to claim 1, characterized in that: The concave rod (10) further includes a rhombic concave rod (11), and the two rod bodies can be used after replacement to form cavities with different shapes in the aluminum alloy riser products.
4. A bicycle aluminum alloy riser forming device according to claim 1, characterized in that: Moving motors (14) are symmetrically installed on the front and rear sides of the flaw detector mounting base (12), and moving wheels (15) are installed on the inner sides of the moving motors (14) through transmission.
5. A bicycle aluminum alloy vertical pipe forming device according to claim 4, characterized in that: The moving wheels (15) are installed in the inner cavity of the flaw detector mounting base (12), and the bottom of the moving wheels (15) abuts against the top surface of the mold mounting base (3); the two moving motors (14) are driven synchronously to drive the flaw detector mounting base (12) to displace along the forming mold (7).
6. The forming process of a forming device for a bicycle aluminum alloy riser according to any one of claims 1-5, characterized in that: S1, Preparation stage: Install and debug the components of the extruder (1), the discharge cylinder (2), the mold mounting base (3), the cavity concave mold (4) and the forming mold (7) to ensure that all parts of the equipment are firmly connected and operate normally; the docking accuracy of the discharge cylinder (2) with the mold mounting base (3) and the forming mold (7), and the fixing situation of the docking panel (5) of the cavity concave mold (4) with the forming mold (7) through the fixing bolts (6) and the fixing holes (9) to ensure the smoothness of the blank injection channel and the structural stability of the forming mold (7); S2, Extrusion Molding: Start the extruder (1), and inject the aluminum alloy blank into the molding cavity (8) of the molding die (7) through the discharge cylinder (2); Since the concave rod (10) is horizontally inserted in the middle of the molding cavity (8), the injected aluminum alloy blank flows around the concave rod (10) for filling, and a blank of an aluminum alloy riser with a cavity of a specific shape is initially formed in the molding cavity (8); During this process, control parameters such as the pressure and speed of the extruder to ensure that the aluminum alloy blank evenly fills the molding cavity (8) and obtain a riser blank with good dimensional accuracy and surface quality; At the same time, according to the product design requirements, different types of concave rods (10) can be selected for replacement installation, so as to obtain aluminum alloy risers with cavities of different shapes. S3, Flaw Detection: During the forming process of the aluminum alloy riser blank, start the flaw detector (13) and the moving motor (14); The two moving motors (14) synchronously drive the flaw detector mounting seat (12) to displace along the molding die (7), so that the flaw detector (13) can perform real-time flaw detection on different parts of the aluminum alloy riser being formed; The flaw detector (13) is an ultrasonic flaw detector.