Pipe expanding equipment for bicycle handlebar production

Abstract

The utility model discloses pipe expanding equipment for bicycle handlebar production, and relates to the technical field of bicycle production. The pipe expanding device comprises a pipe expanding table, a plurality of sliding holes penetrate through the surface of the pipe expanding table; a fixing assembly is slidably arranged on the bottom face of the pipe expanding table. The fixing assembly comprises a circular plate and a plurality of connecting plates; piston cylinders are fixed on the side surfaces of the connecting plates; a plurality of reinforcing grooves are evenly formed in the circumferential side face of the piston cylinder. Elastic diaphragms are hermetically fixed on the inner walls of the reinforcing grooves; a plurality of anti-skid bulges are uniformly fixed on the peripheral side surface of the elastic diaphragm; an L-shaped pipe is fixed to the bottom face of the pipe expanding table. A piston plate is fixed to the end of the L-shaped pipe. In the process that the steel pipe is driven to move downwards, the piston plate moves upwards relative to the inner wall of the piston barrel, then air in the piston barrel is extruded, the elastic diaphragm and the anti-skid protrusions are extruded outwards to apply pressure to the inner wall of the steel pipe, the steel pipe is fixed to the circumferential side face of the piston barrel, and it is prevented that the steel pipe moves up and down, and follow-up pipe expanding operation is affected; and the steel pipe fixing stability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bicycle manufacturing technology, and in particular relates to a tube expansion device for bicycle handlebar production. Background Technology

[0002] A bicycle, also known as a pedal bike or cyclist, is a small, two-wheeled land vehicle. There are many types of bicycles, including single bicycles, tandem bicycles, and multi-person bicycles. They can be used as an environmentally friendly means of transportation for commuting and getting around; increasingly, people use bicycles as fitness equipment for exercise and cycling tours; cycling itself is also a competitive sport, with events such as road cycling, mountain biking, track cycling, and stunt cycling.

[0003] A bicycle currently consists of many components, including the frame, handlebars, tires, pedals, brakes, and chain. These basic components are indispensable. During the handlebar manufacturing process, the handlebar needs to undergo a tube-expanding process. This involves inserting a lifting tube expander into the handlebar tube using tube-expanding equipment to enlarge it. After the expanding tube expander is removed, the tube's diameter increases. However, existing tube-expanding devices require manual fixing of the steel tube and operation of the lifting tube expander, making it difficult to stabilize the tube's position and causing deviations in the tube-expanding process.

[0004] To address this issue, we provide a tube expansion device for bicycle handlebar manufacturing to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a tube expansion device for bicycle handlebar production. The device moves the steel tube downwards via a lowering fixing component. During this process, the piston plate moves upwards relative to the inner wall of the piston cylinder, thereby compressing the air inside the piston cylinder. This causes the elastic diaphragm and anti-slip protrusions to press outwards, applying pressure to the inner wall of the steel tube. This fixes the steel tube to the circumference of the piston cylinder, preventing it from moving up and down and affecting subsequent tube expansion operations. This improves the stability of the steel tube fixation and solves the problem of existing tube expansion devices requiring manual fixing of the steel tube and operation of the lifting and lowering expansion head, which makes it difficult to stabilize the position of the steel tube and causes deviations in the tube expansion process.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a tube expansion device for bicycle handlebar production, including a tube expansion platform; the surface of the tube expansion platform is provided with a plurality of sliding holes; a fixing component is slidably disposed on the bottom surface of the tube expansion platform; the fixing component includes a circular plate; a plurality of connecting plates are evenly fixed in a circumferential array on the circumferential side of the circular plate; a piston cylinder is fixed on the side of the connecting plate; a plurality of reinforcing grooves are evenly distributed in a circumferential array on the circumferential side of the piston cylinder; an elastic diaphragm is sealed and fixed on the inner wall of the reinforcing groove; a plurality of anti-slip protrusions are evenly fixed on the circumferential side of the elastic diaphragm; an L-shaped tube is fixed on the bottom surface of the tube expansion platform next to each sliding hole; a piston plate is fixed at the end of the L-shaped tube and slides with the inner wall of the piston cylinder.

[0007] The present invention is further configured such that a plurality of gears are evenly distributed in a circular array on the surface of the expansion platform located on the outer periphery of the sliding hole; an arc-shaped plate is fixed to the periphery of the gears; and an anti-slip plate is fixed to the side of the arc-shaped plate.

[0008] The present invention is further configured such that a steel pipe is slidably disposed on the inner wall of the sliding hole; the inner wall of the steel pipe is slidably fitted with the circumferential side of the piston cylinder; an anti-slip sleeve is disposed on the inner wall of the anti-slip plate; and the anti-slip sleeve is in contact with the circumferential side of the steel pipe.

[0009] The present invention is further configured such that a fixing sleeve is fixed to the circumferential side of the piston cylinder; a plurality of racks are evenly fixed in a circular array on the circumferential side of the fixing sleeve; and the racks mesh with gears.

[0010] The present invention is further configured such that a mounting frame is fixed on the bottom surface of the expansion platform; a first electric telescopic rod is fixed on the surface of the mounting frame; and the telescopic end of the first electric telescopic rod is fixedly connected to the circular plate.

[0011] The present invention is further configured such that a fixed shaft is fixed to the surface of the tube expansion platform; a fixed plate is fixed to the top of the fixed shaft; a second electric telescopic rod is fixed to the bottom surface of the fixed plate; and a tube expansion assembly is fixed to the telescopic end of the second electric telescopic rod.

[0012] The present invention is further configured such that the tube expansion assembly includes a plurality of mounting plates arranged in a circumferential array; the mounting plates are fixedly connected to each other; and a tube expansion head is fixed to the bottom surface of the mounting plate.

[0013] The present invention has the following beneficial effects: 1. The present invention moves the steel pipe downward by moving the downward fixing component. During this process, the piston plate moves upward relative to the inner wall of the piston cylinder, thereby squeezing the air inside the piston cylinder. This causes the elastic diaphragm and anti-slip protrusions to press outward and apply pressure to the inner wall of the steel pipe, so that the steel pipe is fixed on the periphery of the piston cylinder, preventing the steel pipe from moving up and down and affecting the subsequent expansion operation, thus improving the stability of the steel pipe fixing.

[0014] 2. During the downward movement of the fixing component of this utility model, the piston cylinder moves downward, causing the fixing sleeve to move downward, which in turn causes the rack to move downward, which in turn causes the corresponding gear to rotate, which in turn causes the arc plate to rotate, so that all the arc plates move closer and closer to each other, which in turn causes the anti-slip plate to move closer to the circumference of the steel pipe. Finally, the anti-slip sleeve on the anti-slip plate abuts against the circumference of the steel pipe, gripping and fixing the outer wall of the steel pipe, which further improves the fixing effect of the steel pipe and thus improves the stability of the steel pipe during the expansion process.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a tube expansion device used in the production of bicycle handlebars.

[0018] Figure 2 For the present utility model Figure 1 Another perspective structural diagram.

[0019] Figure 3 This is a schematic diagram of the expansion platform of this utility model.

[0020] Figure 4 For the present utility model Figure 3 Enlarged view of region A.

[0021] Figure 5 This is a schematic diagram of the structure of the fixing component of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Expanding tube platform; 2. Sliding hole; 3. Fixing assembly; 4. Circular plate; 5. Connecting plate; 6. Piston cylinder; 7. Reinforcing groove; 8. Elastic diaphragm; 9. Anti-slip protrusion; 10. L-shaped tube; 11. Piston plate; 12. Gear; 13. Arc plate; 14. Anti-slip plate; 15. Steel pipe; 16. Fixing sleeve; 17. Rack; 18. Mounting bracket; 19. First electric telescopic rod; 20. Fixing shaft; 21. Fixing plate; 22. Second electric telescopic rod; 23. Expanding tube assembly; 24. Mounting plate; 25. Expanding tube head. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] For a specific implementation example, please refer to Implementation Example 1. Figure 1-5 This utility model is a tube expansion device for bicycle handlebar production, including a tube expansion platform 1; a plurality of sliding holes 2 are opened through the surface of the tube expansion platform 1; a fixing component 3 is slidably arranged on the bottom surface of the tube expansion platform 1; the fixing component 3 includes a circular plate 4; a plurality of connecting plates 5 are evenly distributed in a circumferential array on the periphery of the circular plate 4; a piston cylinder 6 is fixed on the side of the connecting plate 5; a plurality of reinforcing grooves 7 are evenly distributed in a circumferential array on the periphery of the piston cylinder 6; an elastic diaphragm 8 is sealed and fixed on the inner wall of the reinforcing groove 7; a plurality of anti-slip protrusions 9 are evenly fixed on the periphery of the elastic diaphragm 8; an L-shaped tube 10 is fixed on the bottom surface of the tube expansion platform 1 next to each sliding hole 2; a piston plate 11 is fixed at the end of the L-shaped tube 10 and slides with the inner wall of the piston cylinder 6.

[0026] Specifically, a mounting frame 18 is fixed to the bottom surface of the expansion tube platform 1; a first electric telescopic rod 19 is fixed to the surface of the mounting frame 18; the telescopic end of the first electric telescopic rod 19 is fixedly connected to the circular plate 4.

[0027] Furthermore, a fixed shaft 20 is fixed to the surface of the tube expansion platform 1; a fixed plate 21 is fixed to the top of the fixed shaft 20; a second electric telescopic rod 22 is fixed to the bottom of the fixed plate 21; and a tube expansion assembly 23 is fixed to the telescopic end of the second electric telescopic rod 22.

[0028] Furthermore, the tube expansion assembly 23 includes several mounting plates 24 arranged in a circumferential array; each mounting plate 24 is fixedly connected to the others; and a tube expansion head 25 is fixed to the bottom surface of the mounting plate 24.

[0029] The operation process of this embodiment is as follows: First, the handlebars are placed around the piston cylinder 6. Then, the first electric telescopic rod 19 is activated, causing its telescopic end to slide the circular plate 4 downward, which in turn causes the connecting plate 5 and the piston cylinder 6 to slide downward. This causes the handlebars to slide downward along the sliding hole 2. During this process, the piston cylinder 6 moves downward, causing the piston plate 11 to move upward relative to the inner wall of the piston cylinder 6, thereby compressing the air inside the piston cylinder 6 and compressing the elastic diaphragm 8. This causes the elastic diaphragm 8 to press outward and apply pressure to the inner wall of the handlebars. At the same time, the anti-slip protrusions 9 are tightly fitted to the inner wall of the handlebars, so that the handlebars are fixed to the side of the piston cylinder 6, preventing the handlebars from moving up and down and affecting the subsequent tube expansion operation.

[0030] After securing the handlebars, activate the second electric telescopic rod 22, causing its telescopic end to move the tube expansion assembly 23 downwards, which in turn moves the mounting plate 24 and the tube expansion head 25 downwards, allowing the tube expansion head 25 to slowly extend into the inner wall of the handlebars to perform tube expansion. Then, drive the telescopic end of the second electric telescopic rod 22 to retract and detach from the handlebars.

[0031] Then, the first electric telescopic rod 19 is driven to move its telescopic end upward, which in turn drives the circular plate 4, the connecting plate 5, and the piston cylinder 6 to move upward, thereby driving the handlebars to move upward. During this process, the piston cylinder 6 moves upward, causing the piston plate 11 to move downward relative to the inner wall of the piston cylinder 6, thereby increasing the sealed space inside the piston cylinder 6, which in turn causes the elastic diaphragm 8 to retract and reset, causing the elastic diaphragm 8 to contract inward and detach from the inner wall of the handlebars, thereby releasing the fixed limit on the handlebars, and then the handlebars can be removed.

[0032] In this embodiment, the handlebars are moved downward by the downward moving fixing component 3. During this process, the piston plate 11 moves upward relative to the inner wall of the piston cylinder 6, thereby squeezing the air inside the piston cylinder 6, which in turn squeezes the elastic diaphragm 8. This causes the elastic diaphragm 8 and the anti-slip protrusions 9 to press outward against the inner wall of the handlebars, thus fixing the handlebars to the side of the piston cylinder 6. This prevents the handlebars from moving up and down, which would affect the subsequent tube expansion operation and improve the stability of the handlebar fixation.

[0033] For a specific embodiment two, please refer to Figure 1-5 Based on the first specific embodiment, a number of gears 12 are evenly arranged in a circular array on the surface of the expansion tube platform 1 located on the outer side of the sliding hole 2; an arc plate 13 is fixed on the side of the gears 12; and an anti-slip plate 14 is fixed on the side of the arc plate 13.

[0034] Specifically, a steel pipe 15 is slidably installed on the inner wall of the sliding hole 2; the inner wall of the steel pipe 15 is slidably fitted with the circumferential side of the piston cylinder 6; an anti-slip sleeve is installed on the inner wall of the anti-slip plate 14; the anti-slip sleeve is in contact with the circumferential side of the steel pipe 15.

[0035] Furthermore, a fixing sleeve 16 is fixed to the side of the piston cylinder 6; several racks 17 are evenly distributed in a circular array on the side of the fixing sleeve 16; the racks 17 mesh with the gears 12.

[0036] The operation process of this embodiment is as follows: In the initial state, the piston cylinder 6 is at its highest position, and the arc-shaped plates 13 on the same sliding hole 2 are in a state of mutual expansion. First, the steel pipe 15 is put on the side of the piston cylinder 6, and the bottom surface of the steel pipe 15 is in contact with the surface of the fixing sleeve 16. Then, the first electric telescopic rod 19 is activated, so that its telescopic end drives the fixing component 3 to move down, thereby driving the steel pipe 15 to slide down along the sliding hole 2. During this process, the piston cylinder 6 moves down, driving the fixing sleeve 16 to move down, thereby driving the rack 17 to move down, thereby driving the corresponding gear 12 to rotate, thereby driving the arc plate 13 to rotate, so that all the arc plates 13 move closer and closer to each other, thereby driving the anti-slip plate 14 to move closer to the side of the steel pipe 15. Finally, the anti-slip sleeve on the anti-slip plate 14 abuts against the side of the steel pipe 15, gripping and fixing the outer wall of the steel pipe 15, further improving the fixing effect of the steel pipe 15, and thus improving the stability of the steel pipe 15 during the expansion process.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tube expansion device for bicycle handlebar production, comprising a tube expansion platform (1); a plurality of sliding holes (2) are formed through the surface of the tube expansion platform (1); a fixing component (3) is slidably disposed on the bottom surface of the tube expansion platform (1); characterized in that: The fixing component (3) includes a circular plate (4); several connecting plates (5) are evenly fixed on the circumferential side of the circular plate (4) in a circular array; The connecting plate (5) has a piston cylinder (6) fixed on its side; the piston cylinder (6) has several reinforcing grooves (7) evenly distributed in a circular array on its circumferential side. The inner wall of the reinforcing groove (7) is sealed with an elastic diaphragm (8); the elastic diaphragm (8) has several anti-slip protrusions (9) evenly fixed on its periphery; The bottom surface of the expansion tube platform (1) is fixed with an L-shaped tube (10) next to each sliding hole (2); the end of the L-shaped tube (10) is fixed with a piston plate (11) that slides with the inner wall of the piston cylinder (6).

2. The tube expansion device for bicycle handlebar production according to claim 1, characterized in that, The expansion platform (1) has several gears (12) evenly arranged in a circular array on the outer side of the sliding hole (2); an arc plate (13) is fixed on the side of the gears (12); and an anti-slip plate (14) is fixed on the side of the arc plate (13).

3. The tube expansion device for bicycle handlebar production according to claim 2, characterized in that, A steel pipe (15) is slidably disposed on the inner wall of the sliding hole (2); the inner wall of the steel pipe (15) is slidably fitted with the circumferential side of the piston cylinder (6); an anti-slip sleeve is disposed on the inner wall of the anti-slip plate (14); the anti-slip sleeve is in contact with the circumferential side of the steel pipe (15).

4. The tube expansion device for bicycle handlebar production according to claim 3, characterized in that, The piston cylinder (6) is fixed with a fixing sleeve (16) on its circumferential side; the fixing sleeve (16) is evenly fixed with several racks (17) in a circular array on its circumferential side; the racks (17) mesh with the gears (12).

5. The tube expansion device for bicycle handlebar production according to claim 4, characterized in that, The bottom surface of the expansion tube platform (1) is fixed with a mounting frame (18); the surface of the mounting frame (18) is fixed with a first electric telescopic rod (19); the telescopic end of the first electric telescopic rod (19) is fixedly connected to the circular plate (4).

6. The tube expansion device for bicycle handlebar production according to claim 5, characterized in that, The expansion platform (1) is fixed with a fixed shaft (20); a fixed plate (21) is fixed at the top of the fixed shaft (20); a second electric telescopic rod (22) is fixed at the bottom of the fixed plate (21); and an expansion assembly (23) is fixed at the telescopic end of the second electric telescopic rod (22).

7. The tube expansion device for bicycle handlebar production according to claim 6, characterized in that, The tube expansion assembly (23) includes several mounting plates (24) arranged in a circumferential array; each mounting plate (24) is fixedly connected to the others; and a tube expansion head (25) is fixed to the bottom surface of each mounting plate (24).

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