A bicycle frame welding auxiliary tool
By designing a feeding module, a moving module, and a flipping unit for auxiliary welding fixtures for bicycle frames, the problems of automatic continuous feeding and angle adjustment in existing technologies have been solved, and efficient welding of the rear fork tube and seat tube of the bicycle frame has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TANGSHAN JINHENGTONG BICYCLE PARTS
- Filing Date
- 2024-03-07
- Publication Date
- 2026-07-07
Smart Images
Figure CN117921296B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of auxiliary welding of bicycle frames, and in particular to an auxiliary tooling for welding bicycle frames. Background Technology
[0002] The bicycle frame, as the skeleton of the entire bicycle, largely determines and influences the correctness and comfort of riding posture. The frame components are the basic structural parts of the bicycle, serving as its skeleton and main body. The bicycle frame also includes the seatpost and rear fork tube, which are connected together by welding to achieve the frame's mounting function and improve the bicycle's stability.
[0003] In existing auxiliary tooling for bicycle frame welding, such as Chinese Patent No. CN220006639 U, a bicycle frame welding fixture is disclosed. Specifically, when welding bicycle frame steel tubes, the worker first connects the electric push rod to the power supply and operates it to pull the turntable counterclockwise, causing the clamping mechanism to loosen, and square limit blocks one, two, and three to retract towards the center of the turntable. Next, the three bicycle frame steel tubes to be welded are placed against L-shaped limit blocks one, two, and three, and the seat tube and rear fork tube are respectively inserted into the frame positioning pin and the limiting boss. Then, the electric push rod is operated to push the turntable clockwise, causing the clamping mechanism to clamp, thereby causing square limit blocks one, two, and three to extend outward, thus clamping the three bicycle frame steel tubes to be welded. Finally, the worker welds the bicycle frame steel tubes. After welding is completed, the worker operates the electric push rod to loosen the clamping mechanism and remove the welded bicycle frame steel tube. The above steps can then be repeated to weld the next set of bicycle frame steel tubes.
[0004] The aforementioned existing technology can also assist in the welding of bicycle frames. However, on the one hand, the existing technology cannot achieve automatic continuous feeding of bicycle frames during the welding process, resulting in low efficiency when feeding bicycle frames manually. On the other hand, the existing technology cannot adjust the position and angle of the bicycle frame during the welding process, and angular errors are easily caused when the bicycle frame is manually flipped. Therefore, there is still room for improvement in the existing bicycle frame welding auxiliary tooling. Summary of the Invention
[0005] In order to achieve the function of automatically and continuously welding the rear fork tube of the bicycle frame to the seat tube of the bicycle frame, while adjusting the position and angle of the rear fork tube of the bicycle frame during the welding process.
[0006] The technical solution for the auxiliary tooling for welding bicycle frames provided in this application is as follows:
[0007] A welding auxiliary fixture for bicycle frames includes: a base plate frame, which is a rectangular structure; a mounting frame, which is a rectangular hollow structure; a feeding module, which is symmetrically installed on both sides of the middle part of the mounting frame, and the feeding module is used to feed the bicycle frame; a moving module, which is symmetrically installed in the middle part of the mounting frame, and the moving module is used to drive the bicycle frame to move towards the middle part of the mounting frame; and a positioning module, which is installed in the middle part of the mounting frame, and the positioning module is used to position the bicycle frame and clamp and fix the bicycle frame.
[0008] By adopting the above technical solution, when welding is required on the bicycle frame, the seat tube of the bicycle frame is first fixed to the front end of the positioning module. Then, the feeding module pushes the rear fork tubes of the bicycle frame into the moving module in sequence. The two moving modules drive the rear fork tubes of the bicycle frame to move synchronously towards the center of the mounting frame. When the moving modules move to both sides of the positioning module, the moving modules drive the front end of the rear fork tubes of the bicycle frame to rotate at a certain angle. The certain angle is the welding angle between the rear fork tubes and the seat tubes of the bicycle frame. At this time, the rear fork tubes of the bicycle frame are parallel to the two sides of the positioning module. Then, the moving modules drive the rear fork tubes of the bicycle frame to continue moving towards the center of the mounting frame until the rear fork tubes of the bicycle frame are in close contact with the two sides of the positioning module. At this time, the ends of the two rear fork tubes of the bicycle frame are in close contact with the seat tubes of the bicycle frame. Then, the ends of the rear fork tubes of the bicycle frame and the seat tubes of the bicycle frame are accurately and fully welded. After welding is completed, the front end of the positioning module stops fixing the seat tubes of the bicycle frame, and the whole formed by the rear fork tubes and the seat tubes of the bicycle frame is pulled out from the front of the positioning module.
[0009] Preferably, the feeding module includes a storage rack, a pushing cylinder, and a blocking unit. The storage rack is symmetrically installed on both sides of the middle of the mounting frame. The storage rack has a trapezoidal cross-section. Negative pressure holes are evenly arranged on the outer end face of the storage rack. Bicycle frames are evenly placed on the storage rack. Rectangular grooves are evenly arranged on the inner side of the middle of the storage rack. Blocking units are installed in the rectangular grooves. The blocking units cooperate with the moving module. Pushing cylinders are symmetrically installed on the outer side of the upper end of the storage rack through brackets.
[0010] By adopting the above technical solution, the bicycle frame rear fork tubes are first evenly placed on the storage rack. When welding is required on the bicycle frame, two pusher cylinders simultaneously push the bicycle frame rear fork tubes on the storage rack inward. When the bicycle frame rear fork tube at the outermost end of the storage rack contacts the baffle unit, the pusher cylinders stop pushing. Then, the moving module moves to both sides of the middle of the mounting frame. When the end of the moving module contacts the baffle unit, the baffle unit is squeezed and retracts into the rectangular groove. The moving module continues to move to both sides. At this time, the end of the moving module can block the bicycle frame rear fork tube. When the baffle unit is completely retracted into the rectangular groove, the baffle unit cooperates with the moving module, causing the moving module to stop moving. At this time, the moving module is located at the outermost end of the bicycle frame rear fork tube on the storage rack. Then, the moving module clamps and feeds the bicycle frame rear fork tube located at the outermost end of the storage rack. When the moving module drives the bicycle frame rear fork tube to move towards the middle of the mounting frame, the baffle unit resets, thereby continuing to block the bicycle frame rear fork tube on the storage rack.
[0011] Preferably, the material blocking unit includes a material blocking frame, a guide rod, and a return spring. The guide rod is symmetrically installed in the rectangular groove. The material blocking frame is provided with a telescopic hole that cooperates with the guide rod. The material blocking frame is installed on the guide rod. The cross-section of the material blocking frame is a trapezoidal structure. A return spring is installed at the outer end of the guide rod. A touch switch is installed on the inner wall of the rectangular groove. The touch switch is electrically connected to the moving module.
[0012] By adopting the above technical solution, when the moving module moves to both sides of the middle of the mounting frame and contacts the baffle, the baffle is squeezed and retracts into the rectangular groove. The moving module continues to move to both sides. At this time, the end of the moving module can block the rear fork tube of the bicycle frame. When the baffle is completely retracted into the rectangular groove, the baffle presses the touch switch, causing the moving module to stop moving, thereby clamping and feeding the rear fork tube of the bicycle frame located at the outermost end of the storage rack. When the moving module drives the rear fork tube of the bicycle frame to move towards the middle of the mounting frame, the return spring resets, and the baffle can continue to block the rear fork tube of the bicycle frame on the storage rack.
[0013] Preferably, the moving module includes a moving frame, a guide rail frame, and a flipping unit. The upper and lower side walls of the mounting frame are symmetrically provided with sliding grooves. An electric slider is installed in the sliding groove. A slider is slidably mounted on the electric slider. The guide rail frame is installed on the slider. The guide rail frame is electrically connected to a touch switch. A moving frame is installed between the guide rail frames. The moving frame has a U-shaped cross-section. A flipping unit is installed in the middle of the moving frame through a bearing.
[0014] By adopting the above technical solution, when the pushing cylinder pushes the bicycle frame rear fork tube to contact the blocking unit, the slider drives the guide rail and the moving frame to move towards both sides of the middle of the mounting frame. When the blocking unit contacts the end of the flipping unit, the blocking unit gradually retracts into the rectangular groove. When the blocking unit is completely retracted into the rectangular groove, the blocking unit cooperates with the guide rail, causing the guide rail to stop moving, which facilitates the flipping unit to clamp and feed the bicycle frame rear fork tube on the storage rack. Subsequently, the guide rail drives the moving frame and the bicycle frame rear fork tube to move towards the middle of the mounting frame. When the end of the flipping unit stops contacting the blocking unit, the blocking unit resets, thus continuing to block the bicycle frame rear fork tube on the storage rack. When the moving frame moves to both sides of the positioning module, the flipping unit drives the self-closing unit to move towards the middle of the mounting frame. The front end of the bicycle frame's rear fork tube is rotated at a certain angle, making the moving frame and the bicycle frame's rear fork tube parallel to both sides of the positioning module. Then, the guide rail frame drives the moving frame and the bicycle frame's rear fork tube to continue moving towards the center of the mounting frame until the bicycle frame's rear fork tube contacts both sides of the positioning module. At this point, the end of the bicycle frame's rear fork tube is in close contact with the bicycle frame's seat tube, facilitating accurate and thorough welding between the end of the bicycle frame's rear fork tube and the bicycle frame's seat tube. After welding is completed, the positioning module stops fixing the bicycle frame's seat tube, and the entire assembly formed by the bicycle frame's rear fork tube and bicycle frame's seat tube is pulled out from the front side of the positioning module. The guide rail frame drives the moving frame to move towards both sides of the center of the mounting frame, while the flipping unit drives the moving frame to reset, facilitating subsequent loading of the bicycle frame's rear fork tube.
[0015] Preferably, the flipping unit includes a flipping frame, a gear shaft, a rack plate, a fixing mechanism, and a snap-fit frame. The flipping frame is provided in the middle of the movable frame. The flipping frame is provided with a trapezoidal through groove that cooperates with the bicycle frame. The gear shaft is installed in the middle of the flipping frame. Hollow grooves are symmetrically arranged in the side wall of the mounting frame. A rack plate is installed in the hollow groove. The rack plate meshes with the gear shaft. The gear shaft is connected to the movable frame through a bearing. Telescopic grooves are evenly arranged in the flipping frame. A fixing mechanism is installed in the telescopic groove. A snap-fit frame that cooperates with the baffle is installed on the flipping frame.
[0016] By adopting the above technical solution, the slider drives the guide rail frame and the moving frame to move towards both sides of the middle of the mounting frame. When the snap-fit frame on the flipping frame contacts the baffle frame, the baffle frame is squeezed and retracts into the rectangular groove, which facilitates the guide rail frame to drive the moving frame to continue moving to both sides. When the baffle frame contacts the touch switch, the guide rail frame stops moving, and the fixing mechanism extends to press and fix the rear fork tube of the bicycle frame. Then, the guide rail frame drives the moving frame and the rear fork tube of the bicycle frame to move towards the middle of the mounting frame. When the moving frame moves to both sides of the positioning module, the gear shaft meshes with the rack plate. The gear shaft drives the flipping frame and the rear fork tube of the bicycle frame to flip at a certain angle, so that the rear fork tube of the bicycle frame is parallel to both sides of the positioning module. After the welding between the rear fork tube of the bicycle frame and the seat tube of the bicycle frame is completed, the fixing mechanism stops fixing the rear fork tube of the bicycle frame. The guide rail frame drives the moving frame to move towards both sides of the middle of the mounting frame. At this time, the gear shaft meshes with the rack plate again, so that the moving frame resets, which is conducive to the subsequent feeding of the rear fork tube of the bicycle frame.
[0017] Preferably, the fixing mechanism includes an electric push rod, a telescopic spring, and a pressure plate. The electric push rod is installed in the telescopic groove, and a pressure plate is installed at the end of the electric push rod. Negative pressure holes are evenly arranged on the pressure plate, and a telescopic spring is installed between the pressure plate and the electric push rod.
[0018] By adopting the above technical solution, when the flipping unit loads the bicycle frame rear fork tube on the storage rack, the electric push rod pushes the pressure plate out of the telescopic groove, so that the pressure plate presses the bicycle frame rear fork tube tightly. At the same time, the negative pressure hole on the pressure plate attracts the bicycle frame rear fork tube, achieving double fixation of the bicycle frame rear fork tube. Then, the flipping unit drives the bicycle frame rear fork tube to move towards the center of the mounting frame. After the bicycle frame rear fork tube and the bicycle frame seat tube are welded together, the negative pressure hole on the pressure plate stops attracting the bicycle frame rear fork tube, and the electric push rod drives the pressure plate back into the telescopic groove, thereby stopping the fixation of the bicycle frame rear fork tube, which is conducive to unloading the bicycle frame rear fork tube and the bicycle frame seat tube as a whole.
[0019] Preferably, the positioning module includes a fixing frame and a clamping unit. The fixing frame is installed in the middle of the mounting frame. The fixing frame has a trapezoidal cross-section. Positioning grooves that cooperate with the rear fork tube of the bicycle frame are symmetrically arranged on both sides of the fixing frame. The clamping unit is installed on the front side of the fixing frame.
[0020] By adopting the above technical solution, before welding the bicycle frame, the bicycle frame seat tube is first placed in the middle of the clamping unit, and the clamping unit clamps and fixes the middle of the bicycle frame seat tube. Then, the bicycle frame rear fork tube is loaded. When the moving module moves the bicycle frame rear fork tube to be in close contact with both sides of the fixing frame, the bicycle frame rear fork tube is just in the positioning groove. Then, the bicycle frame rear fork tube and the bicycle frame seat tube are welded together.
[0021] Preferably, the clamping unit includes a telescopic rod and a clamping frame. The telescopic rod is symmetrically installed on the front end face of the fixed frame, and the clamping frame is installed on the telescopic rod. The inner end face of the clamping frame is an arc-shaped structure that matches the seat post of the bicycle frame, and negative pressure holes are evenly arranged on the inner wall of the clamping frame.
[0022] By adopting the above technical solution, before the bicycle frame is welded, the bicycle frame seat tube is placed in the middle of the clamping frame. The negative pressure holes on the inner side of the clamping frame adsorb and fix the bicycle frame seat tube. After the welding is completed, the negative pressure holes on the inner side of the clamping frame stop adsorbing the bicycle frame seat tube, and the bicycle frame seat tube can be pulled out of the clamping frame.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. This invention includes a feeding module. When welding is required on a bicycle frame, two pushing cylinders simultaneously push the bicycle frame rear fork tube on the storage rack inward. When the bicycle frame rear fork tube at the outermost end of the storage rack contacts the blocking unit, the pushing cylinders stop pushing. Subsequently, the moving module moves to both sides of the middle of the mounting frame. When the end of the moving module contacts the blocking unit, the blocking unit is squeezed and retracts into the rectangular groove. The moving module continues to move to both sides. At this time, the end of the moving module can block the bicycle frame rear fork tube. When the blocking unit is completely retracted into the rectangular groove, the blocking unit cooperates with the moving module, causing the moving module to stop moving. At this time, the moving module is located at the outermost end of the bicycle frame rear fork tube on the storage rack. Subsequently, the moving module clamps and feeds the bicycle frame rear fork tube located at the outermost end of the storage rack. When the moving module drives the bicycle frame rear fork tube to move towards the middle of the mounting frame, the blocking unit resets, thereby continuing to block the bicycle frame rear fork tube on the storage rack.
[0025] 2. This invention incorporates a flipping unit. A slider drives the guide rail and movable frame to move towards both sides of the center of the mounting frame. When the snap-fit bracket on the flipping frame contacts the baffle, the baffle is compressed and retracts into the rectangular groove, facilitating the guide rail to continue moving the movable frame to both sides. When the baffle contacts the touch switch, the guide rail stops moving, and the fixing mechanism extends to press and fix the bicycle frame's rear fork tube. Subsequently, the guide rail drives the movable frame and the bicycle frame's rear fork tube to move towards the center of the mounting frame. When the movable frame reaches both sides of the positioning module, the gear shaft meshes with the rack plate, causing the flipping frame and the bicycle frame's rear fork tube to flip at a certain angle, making the bicycle frame's rear fork tube parallel to both sides of the positioning module. After the welding between the bicycle frame's rear fork tube and the bicycle frame's seat tube is completed, the fixing mechanism stops fixing the bicycle frame's rear fork tube, and the guide rail drives the movable frame to move towards both sides of the center of the mounting frame. At this time, the gear shaft meshes with the rack plate again, causing the movable frame to reset, facilitating subsequent feeding of the bicycle frame's rear fork tube.
[0026] 3. The present invention includes a positioning module. Before welding the bicycle frame, the bicycle frame seat tube is first placed in the middle of the clamping unit, which clamps and fixes the middle of the bicycle frame seat tube. Then, the bicycle frame rear fork tube is loaded. When the moving module moves the bicycle frame rear fork tube to be in close contact with both sides of the fixing frame, the bicycle frame rear fork tube is exactly in the positioning groove. Then, the bicycle frame rear fork tube and the bicycle frame seat tube are welded together. Attached Figure Description
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] Figure 1 This is a three-dimensional structural diagram of this application.
[0029] Figure 2 This is a cross-sectional structural diagram of this application.
[0030] Figure 3 This is a cross-sectional structural diagram of the mobile module of this application.
[0031] Figure 4 This is a three-dimensional structural diagram of the positioning module of this application.
[0032] Figure 5 This is a three-dimensional structural diagram of the feeding module and the moving module of this application.
[0033] Figure 6 This is a three-dimensional structural diagram of the positioning module of this application.
[0034] Figure 7 This is a cross-sectional structural diagram of the material blocking unit of this application.
[0035] Explanation of reference numerals in the attached drawings: 1. Base plate frame; 2. Mounting frame; 3. Feeding module; 31. Storage rack; 32. Pushing cylinder; 33. Stopping unit; 331. Stopping frame; 332. Guide rod; 333. Return spring; 4. Moving module; 41. Moving frame; 42. Guide rail frame; 43. Tilting unit; 431. Tilting frame; 432. Gear shaft; 433. Rack plate; 434. Fixing mechanism; 4341. Electric push rod; 4342. Telescopic spring; 4343. Pressure plate; 435. Snap-fit frame; 5. Positioning module; 51. Fixing frame; 52. Clamping unit; 521. Telescopic rod; 522. Clamping frame. Detailed Implementation
[0036] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.
[0037] This application discloses a bicycle frame welding auxiliary tooling that can automatically and continuously weld the bicycle frame rear fork tube to the bicycle frame seat tube, while adjusting the position and angle of the bicycle frame rear fork tube during the welding process.
[0038] Reference Figure 1 A welding auxiliary fixture for bicycle frames includes: a base plate frame 1, which is a rectangular structure; a mounting frame 2, which is a rectangular hollow structure; a feeding module 3, which is symmetrically installed on both sides of the middle part of the mounting frame 2, and the feeding module 3 is used to feed the bicycle frame; a moving module 4, which is symmetrically installed in the middle part of the mounting frame 2, and the moving module 4 is used to drive the bicycle frame to move towards the middle part of the mounting frame 2; and a positioning module 5, which is installed in the middle part of the mounting frame 2, and the positioning module 5 is used to position the bicycle frame and clamp and fix the bicycle frame.
[0039] In actual use, when welding is required on the bicycle frame, the seatpost is first fixed to the front end of the positioning module 5. Then, the feeding module 3 pushes the rear fork tubes of the bicycle frame into the moving module 4 in sequence. The two moving modules 4 drive the rear fork tubes of the bicycle frame to move synchronously towards the middle of the mounting frame 2. When the moving modules 4 move to both sides of the positioning module 5, they rotate the front end of the rear fork tubes of the bicycle frame at a certain angle, which is the welding angle between the rear fork tubes and the seatpost. At this time, the rear fork tubes are parallel to both sides of the positioning module 5. Then, the moving modules 4 drive the rear fork tubes to continue moving towards the middle of the mounting frame 2 until the rear fork tubes are in close contact with both sides of the positioning module 5. At this time, the ends of the two rear fork tubes are in close contact with the seatpost. Then, the ends of the rear fork tubes and the seatpost are accurately and fully welded. After welding is completed, the front end of the positioning module 5 stops fixing the seatpost, and the whole formed by the rear fork tubes and the seatpost is pulled out from the front of the positioning module 5.
[0040] Reference Figure 5 and Figure 7 In order to realize the automatic continuous feeding function of bicycle frame rear fork tube, a feeding module 3 is set in this embodiment. The feeding module 3 includes a storage rack 31, a pushing cylinder 32 and a blocking unit 33. The storage rack 31 is symmetrically installed on both sides of the middle of the mounting frame 2. The storage rack 31 has a trapezoidal cross-section. Negative pressure holes are evenly arranged on the outer end face of the storage rack 31. Bicycle frames are evenly placed on the storage rack 31. Rectangular grooves are evenly arranged on the inner side of the middle of the storage rack 31. The blocking unit 33 is installed in the rectangular groove. The blocking unit 33 cooperates with the moving module 4. The pushing cylinder 32 is symmetrically installed on the outer side of the upper end of the storage rack 31 through the bracket.
[0041] In actual use, the bicycle frame rear fork tubes are first evenly placed on the storage rack 31. When welding of the bicycle frame is required, the two pusher cylinders 32 simultaneously push the bicycle frame rear fork tubes on the storage rack 31 inward. When the bicycle frame rear fork tube at the outermost end of the storage rack 31 contacts the baffle unit 33, the pusher cylinders 32 stop pushing. Then, the moving module 4 moves to both sides of the middle of the mounting frame 2. When the end of the moving module 4 contacts the baffle unit 33, the baffle unit 33 is squeezed and retracts into the rectangular groove. The moving module 4 continues to move to both sides. The end of module 4 can block the rear fork tube of the bicycle frame. When the blocking unit 33 is fully retracted into the rectangular groove, the blocking unit 33 cooperates with the moving module 4, causing the moving module 4 to stop moving. At this time, the moving module 4 is located at the outermost end of the rear fork tube of the bicycle frame on the storage rack 31. Then the moving module 4 clamps and feeds the rear fork tube of the bicycle frame located at the outermost end of the storage rack 31. When the moving module 4 drives the rear fork tube of the bicycle frame to move towards the middle of the mounting frame 2, the blocking unit 33 resets, thereby continuing to block the rear fork tube of the bicycle frame on the storage rack 31.
[0042] Reference Figure 5 and Figure 7 In order to achieve the function of blocking the bicycle frame rear fork tube on the storage rack 31, a material blocking unit 33 is provided in this embodiment. The material blocking unit 33 includes a material blocking frame 331, a guide rod 332 and a return spring 333. The guide rod 332 is symmetrically installed in the rectangular groove. The material blocking frame 331 is provided with a telescopic hole that cooperates with the guide rod 332. The material blocking frame 331 is installed on the guide rod 332. The cross-section of the material blocking frame 331 is a trapezoidal structure. The return spring 333 is installed on the outer end of the guide rod 332. A touch switch is installed on the inner wall of the rectangular groove. The touch switch is electrically connected to the moving module 4.
[0043] In actual use, when the moving module 4 moves to both sides of the middle of the mounting bracket 2 and comes into contact with the baffle 331, the baffle 331 is squeezed and retracts into the rectangular groove. The moving module 4 continues to move to both sides. At this time, the end of the moving module 4 can block the rear fork tube of the bicycle frame. When the baffle 331 is completely retracted into the rectangular groove, the baffle 331 presses the touch switch, causing the moving module 4 to stop moving, thereby clamping and feeding the rear fork tube of the bicycle frame located at the outermost end of the storage rack 31. When the moving module 4 drives the rear fork tube of the bicycle frame to move towards the middle of the mounting bracket 2, the return spring 333 returns to its original position, and the baffle 331 can continue to block the rear fork tube of the bicycle frame on the storage rack 31.
[0044] It should be noted that when the baffle 331 is pressed against the moving module 4, the baffle 331 retracts into the rectangular groove. The guide rod 332 can ensure that the retraction trajectory of the baffle 331 is a straight line, thereby ensuring that the baffle 331 makes accurate contact with the touch switch.
[0045] Reference Figure 2 , Figure 3 and Figure 5 In order to enable the bicycle frame to move towards the center of the mounting frame 2, a moving module 4 is provided in this embodiment. The moving module 4 includes a moving frame 41, a guide rail frame 42, and a flipping unit 43. The upper and lower side walls of the mounting frame 2 are symmetrically provided with sliding grooves. An electric slider is installed in the sliding groove. A slider is slidably mounted on the electric slider. The guide rail frame 42 is mounted on the slider. The guide rail frame 42 is electrically connected to a touch switch. The moving frame 41 is installed between the guide rail frames 42. The moving frame 41 has a U-shaped cross-section. The flipping unit 43 is installed in the center of the moving frame 41 through a bearing.
[0046] In actual use, when the pushing cylinder 32 pushes the bicycle frame rear fork tube to contact the blocking unit 33, the slider drives the guide rail frame 42 and the moving frame 41 to move towards both sides of the middle of the mounting frame 2. When the blocking unit 33 contacts the end of the flipping unit 43, the blocking unit 33 gradually retracts into the rectangular groove. When the blocking unit 33 is completely retracted into the rectangular groove, the blocking unit 33 cooperates with the guide rail frame 42, causing the guide rail frame 42 to stop moving, which facilitates the flipping unit 43 to clamp and feed the bicycle frame rear fork tube on the storage rack 31. Subsequently, the guide rail frame 42 drives the moving frame 41 and the bicycle frame rear fork tube to move towards the middle of the mounting frame 2. When the end of the flipping unit 43 stops contacting the blocking unit 33, the blocking unit 33 resets, thus continuing to block the bicycle frame rear fork tube on the storage rack 31. When the moving frame 41 moves to the positioning module 5, When the bicycle frame is tilted, the flipping unit 43 rotates the front end of the bicycle frame rear fork tube at a certain angle, making the moving frame 41 and the bicycle frame rear fork tube parallel to both sides of the positioning module 5. Then, the guide rail 42 drives the moving frame 41 and the bicycle frame rear fork tube to continue moving towards the middle of the mounting frame 2 until the bicycle frame rear fork tube contacts both sides of the positioning module 5. At this time, the end of the bicycle frame rear fork tube is in close contact with the bicycle frame seat tube, which is conducive to accurate and sufficient welding between the end of the bicycle frame rear fork tube and the bicycle frame seat tube. After welding is completed, the positioning module 5 stops fixing the bicycle frame seat tube and pulls the whole formed by the bicycle frame rear fork tube and the bicycle frame seat tube out from the front of the positioning module 5. The guide rail 42 drives the moving frame 41 to move towards both sides of the middle of the mounting frame 2. At the same time, the flipping unit 43 drives the moving frame 41 to reset, which is conducive to the subsequent loading of the bicycle frame rear fork tube.
[0047] Reference Figure 2 and Figure 3In order to enable the angle adjustment function of the rear fork tube position of the bicycle frame, a flipping unit 43 is provided in this embodiment. The flipping unit 43 includes a flipping frame 431, a gear shaft 432, a rack plate 433, a fixing mechanism 434, and a snap-fit frame 435. The flipping frame 431 is provided in the middle of the moving frame 41. The flipping frame 431 is provided with a trapezoidal through groove that cooperates with the bicycle frame. The gear shaft 432 is installed in the middle of the flipping frame 431. Hollow grooves are symmetrically arranged in the side wall of the mounting frame 2. The rack plate 433 is installed in the hollow groove and meshes with the gear shaft 432. The gear shaft 432 is connected to the moving frame 41 through a bearing. Telescopic grooves are evenly arranged in the flipping frame 431. The fixing mechanism 434 is installed in the telescopic grooves. The snap-fit frame 435 that cooperates with the baffle frame 331 is installed on the flipping frame 431.
[0048] In actual use, the slider drives the guide rail frame 42 and the movable frame 41 to move towards both sides of the middle of the mounting frame 2. When the snap-fit frame 435 on the flip frame 431 contacts the baffle frame 331, the baffle frame 331 is squeezed and retracts into the rectangular groove, which facilitates the guide rail frame 42 to drive the movable frame 41 to continue moving to both sides. When the baffle frame 331 contacts the touch switch, the guide rail frame 42 stops moving, and the fixing mechanism 434 extends to press and fix the rear fork tube of the bicycle frame. Then, the guide rail frame 42 drives the movable frame 41 and the rear fork tube of the bicycle frame to move towards the middle of the mounting frame 2. When the movable frame 41 moves to When the positioning module 5 is positioned on both sides, the gear shaft 432 meshes with the rack plate 433. The gear shaft 432 drives the flipping frame 431 to flip the bicycle frame rear fork tube at a certain angle, so that the bicycle frame rear fork tube is parallel to both sides of the positioning module 5. After the bicycle frame rear fork tube and the bicycle frame seat tube are welded together, the fixing mechanism 434 stops fixing the bicycle frame rear fork tube. The guide rail frame 42 drives the moving frame 41 to move to both sides of the middle of the mounting frame 2. At this time, the gear shaft 432 and the rack plate 433 mesh again, so that the moving frame 41 is reset, which is conducive to the subsequent feeding of the bicycle frame rear fork tube.
[0049] It should be noted that the number of racks on the rack plate 433 can be changed, thereby enabling the bicycle frame rear fork tube to be flipped at different angles.
[0050] Reference Figure 3 In order to achieve the function of pressing and fixing the rear fork tube of the bicycle frame, a fixing mechanism 434 is provided in this embodiment. The fixing mechanism 434 includes an electric push rod 4341, a telescopic spring 4342 and a pressure plate 4343. The electric push rod 4341 is installed in the telescopic groove, and the pressure plate 4343 is installed at the end of the electric push rod 4341. Negative pressure holes are evenly arranged on the pressure plate 4343, and the telescopic spring 4342 is installed between the pressure plate 4343 and the electric push rod 4341.
[0051] In actual use, when the flipping unit 43 loads the bicycle frame rear fork tube onto the storage rack 31, the electric push rod 4341 pushes the pressure plate 4343 out of the telescopic groove, causing the pressure plate 4343 to press the bicycle frame rear fork tube tightly. At the same time, the negative pressure hole on the pressure plate 4343 attracts the bicycle frame rear fork tube, achieving double fixation of the bicycle frame rear fork tube. Subsequently, the flipping unit 43 drives the bicycle frame rear fork tube to move towards the middle of the mounting bracket 2. After the bicycle frame rear fork tube and the bicycle frame seat tube are welded together, the negative pressure hole on the pressure plate 4343 stops attracting the bicycle frame rear fork tube, and the electric push rod 4341 drives the pressure plate 4343 back into the telescopic groove, thereby stopping the fixation of the bicycle frame rear fork tube, which is conducive to unloading the bicycle frame rear fork tube and the bicycle frame seat tube as a whole.
[0052] Reference Figure 4 and Figure 6 In order to achieve the positioning and fixing function between the rear fork tube and the seat tube of the bicycle frame during the welding process, a positioning module 5 is provided in this embodiment. The positioning module 5 includes a fixing frame 51 and a clamping unit 52. The fixing frame 51 is installed in the middle of the mounting frame 2. The fixing frame 51 has a trapezoidal cross-section. Positioning grooves that cooperate with the rear fork tube of the bicycle frame are symmetrically arranged on both sides of the fixing frame 51. The clamping unit 52 is installed on the front side of the fixing frame 51.
[0053] In actual use, before welding the bicycle frame, the bicycle frame seat tube is first placed in the middle of the clamping unit 52. The clamping unit 52 clamps and fixes the middle of the bicycle frame seat tube. Then, the bicycle frame rear fork tube is loaded. When the moving module 4 moves the bicycle frame rear fork tube to be in close contact with both sides of the fixing frame 51, the bicycle frame rear fork tube is just in the positioning groove. Then, the bicycle frame rear fork tube and the bicycle frame seat tube are welded together.
[0054] It should be noted that when the moving module 4 moves the bicycle frame rear fork tube into the positioning groove, the positioning groove can limit the outer end of the bicycle frame rear fork tube to prevent the bicycle frame rear fork tube from shaking during the welding process; after the welding is completed, the bicycle frame rear fork tube can be pulled out from the front of the positioning groove.
[0055] Reference Figure 4 and Figure 6 In order to achieve the function of clamping and fixing the bicycle frame seat post, a clamping unit 52 is provided in this embodiment. The clamping unit 52 includes a telescopic rod 521 and a clamping frame 522. The telescopic rod 521 is symmetrically installed on the front end face of the fixing frame 51, and the clamping frame 522 is installed on the telescopic rod 521. The inner end face of the clamping frame 522 is an arc-shaped structure that matches the bicycle frame seat post. Negative pressure holes are evenly provided on the inner wall of the clamping frame 522.
[0056] In actual use, before welding the bicycle frame, the bicycle frame seat tube is placed in the middle of the clamp 522. The negative pressure holes on the inner side of the clamp 522 adsorb and fix the bicycle frame seat tube. After welding is completed, the negative pressure holes on the inner side of the clamp 522 stop adsorbing the bicycle frame seat tube, and the bicycle frame seat tube can be pulled out from the clamp 522.
[0057] It should be noted that by adjusting the length of the telescopic rod 521, bicycle frame rear fork tubes of different lengths can be welded, thereby enabling the welding of bicycle frames of different sizes.
[0058] The implementation principle of this embodiment is as follows:
[0059] 1: Fixing the bicycle frame seatpost: When welding is required on the bicycle frame, first place the bicycle frame seatpost in the middle of the front end of the positioning module 5. The positioning module 5 clamps and fixes the bicycle frame seatpost.
[0060] 2: Loading the rear fork tubes of the bicycle frame: The loading module 3 pushes the rear fork tubes of the bicycle frame into the moving module 4 in sequence. The two moving modules 4 drive the rear fork tubes of the bicycle frame to move synchronously towards the middle of the mounting frame 2.
[0061] 3: Adjusting the position and angle of the bicycle frame rear fork tube: When the moving module 4 moves to both sides of the positioning module 5, the moving module 4 causes the front end of the bicycle frame rear fork tube to rotate at a certain angle. The certain angle is the welding angle between the bicycle frame rear fork tube and the bicycle frame seat tube. At this time, the bicycle frame rear fork tube is parallel to both sides of the positioning module 5.
[0062] 4: Positioning and welding between the bicycle frame seatpost and the bicycle frame rear fork tube: After the bicycle frame rear fork tube has been rotated at the correct angle, the moving module 4 drives the bicycle frame rear fork tube to continue moving towards the middle of the mounting bracket 2 until the bicycle frame rear fork tube is in close contact with both sides of the positioning module 5. Then, the end of the bicycle frame rear fork tube and the bicycle frame seatpost are accurately and fully welded. After welding is completed, the front end of the positioning module 5 stops fixing the bicycle frame seatpost, and the whole formed by the bicycle frame rear fork tube and the bicycle frame seatpost is pulled out from the front side of the positioning module 5.
[0063] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A welding auxiliary fixture for bicycle frames, characterized in that, include: The base frame (1) is a rectangular structure; Mounting bracket (2) is a rectangular hollow structure; The feeding module (3) is symmetrically installed on both sides of the middle part of the mounting frame (2). The feeding module (3) is used to feed the rear fork tube of the bicycle frame. The moving module (4) is symmetrically installed in the middle of the mounting frame (2). The moving module (4) is used to drive the bicycle frame rear fork tube to move towards the middle of the mounting frame (2) and to the positioning module (5). The positioning module (5) is installed in the middle of the mounting bracket (2). The positioning module (5) is used to position the rear fork tube of the bicycle frame and to clamp and fix the seat tube of the bicycle frame. The feeding module (3) includes a storage rack (31), a pushing cylinder (32), and a blocking unit (33). The storage rack (31) is symmetrically installed on both sides of the middle of the mounting frame (2). The storage rack (31) has a trapezoidal cross-section. Negative pressure holes are evenly arranged on the outer end face of the storage rack (31). Bicycle frame rear fork tubes are evenly placed on the storage rack (31). A rectangular groove is evenly arranged on the inner side of the middle of the storage rack (31). A blocking unit (33) is installed in the rectangular groove. The blocking unit (33) cooperates with the moving module (4). The pushing cylinder (32) is symmetrically installed on the outer side of the upper end of the storage rack (31) through a bracket. The material blocking unit (33) includes a material blocking frame (331), a guide rod (332) and a reset spring (333). The guide rod (332) is symmetrically installed in the rectangular groove. The material blocking frame (331) is provided with a telescopic hole that cooperates with the guide rod (332). The material blocking frame (331) is installed on the guide rod (332). The cross section of the material blocking frame (331) is a trapezoidal structure. The reset spring (333) is installed at the outer end of the guide rod (332). A touch switch is installed on the inner wall of the rectangular groove. The touch switch is electrically connected to the moving module (4). The moving module (4) includes a moving frame (41), a guide rail frame (42), and a flipping unit (43). The mounting frame (2) has symmetrically arranged sliding grooves on its upper and lower side walls. An electric slider is installed in the sliding groove. A slider is slidably arranged on the electric slider. A guide rail frame (42) is installed on the slider. The guide rail frame (42) is electrically connected to a touch switch. The moving frame (41) is installed between the guide rail frames (42). The moving frame (41) has a U-shaped cross-section. A flipping unit (43) is installed in the middle of the moving frame (41) through a bearing. The flipping unit (43) includes a flipping frame (431), a gear shaft (432), a rack plate (433), a fixing mechanism (434), and a snap-fit bracket (435). The flipping frame (431) is provided in the middle of the movable frame (41). The flipping frame (431) is provided with a trapezoidal through groove that mates with the rear fork tube of the bicycle frame. The gear shaft (432) is installed in the middle of the flipping frame (431). Hollow grooves are symmetrically provided in the side wall of the mounting bracket (2). A rack plate (433) is installed in the hollow groove. 33) When the moving frame (41) moves to both sides of the positioning module (5), the rack plate (433) meshes with the gear shaft (432), and the gear shaft (432) is connected to the moving frame (41) through a bearing. The tilting frame (431) is evenly provided with telescopic grooves, and a fixing mechanism (434) is installed in the telescopic grooves. The fixing mechanism (434) is used to fix the rear fork tube. A snap-fit frame (435) that cooperates with the baffle frame (331) is installed on the tilting frame (431).
2. The auxiliary tooling for welding bicycle frames according to claim 1, characterized in that, The fixing mechanism (434) includes an electric push rod (4341), a telescopic spring (4342), and a pressure plate (4343). The electric push rod (4341) is installed in the telescopic groove, and the pressure plate (4343) is installed at the end of the electric push rod (4341). Negative pressure holes are evenly arranged on the pressure plate (4343), and the telescopic spring (4342) is installed between the pressure plate (4343) and the electric push rod (4341).
3. The auxiliary tooling for welding bicycle frames according to claim 1, characterized in that, The positioning module (5) includes a fixing frame (51) and a clamping unit (52). The fixing frame (51) is installed in the middle of the mounting frame (2). The fixing frame (51) has a trapezoidal cross-section. The fixing frame (51) has symmetrical positioning grooves on both sides that cooperate with the rear fork tube of the bicycle frame. The clamping unit (52) is installed on the front side of the fixing frame (51).
4. The auxiliary tooling for welding bicycle frames according to claim 3, characterized in that, The clamping unit (52) includes a telescopic rod (521) and a clamping frame (522). The telescopic rod (521) is symmetrically installed on the front end face of the fixed frame (51). The clamping frame (522) is installed on the telescopic rod (521). The inner end face of the clamping frame (522) is an arc-shaped structure that matches the seat post of the bicycle frame. Negative pressure holes are evenly arranged on the inner wall of the clamping frame (522).