A frame welding device for bicycle production

Abstract

The present application relates to the technical field of welding, and discloses a bicycle frame welding device for bicycle production, which comprises a workbench, both sides of the top of the workbench are provided with sliding grooves, and sliding blocks are slidably connected in the sliding grooves; side blocks are arranged on the sliding blocks, recesses are arranged on the side walls of the side blocks, and pressing assemblies are arranged at the recesses; wall blocks are connected to the side walls of the recesses, end grooves are arranged on both sides of the end of the wall block close to the recess, end shafts are rotatably connected in the end grooves, first torsional springs are arranged between the end shafts and the end grooves, inclined arms are coaxially connected to the end shafts, and the distance between the two inclined arms gradually decreases from the recess to the wall block; the bicycle frame welding device further comprises a welding assembly, an adjusting assembly for adjusting the distance between the two sliding blocks, and a power assembly for driving the free ends of the two inclined arms to approach each other; and the present application mainly solves the problem of unstable positioning of the existing device.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically to a bicycle frame welding device for bicycle production. Background Technology

[0002] Currently, bicycles are a convenient means of transportation and are widely loved by people from all walks of life. During the production of bicycles, welding processes are involved. The traditional welding method usually involves workers holding the workpiece in one hand and welding with welding pliers suspended in the air in the other hand. This method not only poses significant safety issues, but also can easily cause injury to workers if they are not careful.

[0003] To address the technical problems of traditional welding methods, Chinese Patent No. CN221870864U discloses a bicycle frame welding and fixing device, including a first support frame and a clamping assembly. A caster wheel is fixedly mounted at the bottom of the first support frame, and cylinders are symmetrically fixedly mounted at the top of the first support frame. The output end of the cylinder is fixedly connected to a U-shaped frame. The bottom ends of both sides of the U-shaped frame pass through the first support frame and are fixedly connected to a second support frame. A bidirectional threaded rod is rotatably mounted between the inner walls of the first support frame. One end of the bidirectional threaded rod is fixedly connected to a first motor. Slider blocks are symmetrically threaded onto the bidirectional threaded rod, and a lifting assembly is fixedly mounted at the top of the slider. The output end of the component is connected to the clamping assembly, which includes a rotating shaft, a support frame, and a pressure plate. The rotating shaft is rotatably mounted on one side of the support block, and a driving component is mounted on the rotating shaft. One end of the rotating shaft is fixedly connected to the support frame, which is U-shaped. The pressure plate is disposed inside the support frame, and a second threaded rod is rotatably mounted on the top of the pressure plate. The top of the second threaded rod is threaded through the top of the support frame and fixedly connected to a turntable. Multiple springs are fixedly mounted on the bottom of the pressure plate, and the bottom ends of the multiple springs are jointly fixedly connected to a positioning plate. This device can fix the two frames to be welded separately, avoiding the need for workers to hold the frames by hand and ensuring safety during welding.

[0004] The following problems may occur during actual use of the above-mentioned fixing device: When the frame is placed in the support frame, rotating the second threaded rod causes the pressure plate to move down and abut against the frame, thereby achieving the clamping and positioning of the frame; however, the cooperation between the pressure plate and the support frame can only position the frame in the vertical direction. There is no limiting structure for the frame along the front-rear direction of the support frame, which makes the frame susceptible to movement along the length of the support frame. In other words, there is a problem of unstable positioning of the frame, which may cause the frame to shift and thus affect the welding effect. Summary of the Invention

[0005] The present invention aims to provide a bicycle frame welding device for bicycle production, so as to solve the problem of unstable positioning of the frame in the existing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bicycle frame welding device for bicycle production, comprising a workbench, with sliding grooves on both sides of the top of the workbench, and sliders slidably connected in the sliding grooves; a side block is provided on the slider, and a groove is provided on the side wall of the side block, with a clamping component provided at the groove; a wall block is connected to the side wall of the groove, and an end groove is provided on both sides of the wall block near the groove opening, with an end shaft rotatably connected in the end groove, a first torsion spring provided between the end shaft and the end groove, and an inclined arm coaxially connected to the end shaft, the distance between the two inclined arms gradually decreasing from the groove opening towards the wall block; and further comprising a welding component, an adjustment component for adjusting the distance between the two sliders, and a power component for driving the free ends of the two inclined arms closer together.

[0007] The principles and advantages of this scheme are: 1. Place the two triangular frames of the bicycle into the left and right grooves respectively, so that the triangular frames are located below the clamping component, and then use the clamping component to clamp and position the triangular frames; adjust the component to bring the two sliders closer together, and the sliders drive the triangular frames to move synchronously through the side blocks, so that the two triangular frames are close to the desired position; then use the welding component to complete the welding process.

[0008] 2. After the tripod is placed in the groove, the two side walls at the included angle of the tripod are located between the two tilting arms. The tripod can be clamped and positioned by the clamping component. The free ends of the two tilting arms are brought closer by the power component, and the two tilting arms abut against the two side walls at the included angle of the tripod, thereby clamping and positioning the two side walls at the included angle of the tripod. By using both clamping and pressing methods, the tripod can be positioned in the vertical and front-back directions, avoiding tripod displacement and ensuring the positioning and welding effects.

[0009] Furthermore, a wall groove is provided on the side wall of the groove, and the wall block is slidably connected to the wall groove in the transverse direction; the power component includes a stop block located on both sides of the wall block in the groove, and a power unit for driving the wall block to move along the wall groove direction. The stop block is connected to the side wall of the groove and is located on the movement trajectory of the tilting arm.

[0010] With the above configuration, the power unit drives the wall block to move in the wall groove. The wall block drives the two inclined arms to approach the two stops in the groove, so that the two inclined arms are obstructed by the two stops and rotate towards each other, that is, the free ends of the two inclined arms approach each other.

[0011] Furthermore, the power unit includes a power block, a chamber located inside the side block, a support plate and load-bearing plates located on both sides of the support plate, a power shaft rotatably connected to the support plate, and a second torsion spring between the power shaft and the support plate; both ends of the power shaft are coaxially connected to a disc, and a movable arm is rotatably connected to the eccentric part of the disc; a movable block is laterally slidably connected to the load-bearing plate, and the end of the movable arm away from the disc is rotatably connected to the movable block, and the movable block is fixedly connected to the power block; the wall groove communicates with the chamber, and the wall block is fixedly connected to the power block; it also includes a power unit for driving the power shaft to rotate.

[0012] With the above setup, the power unit drives the power shaft to rotate, and the power shaft drives the wall block to move in the wall groove through the disc, movable arm, movable block, and power block. The wall block drives the two inclined arms to move towards the two stops in the groove.

[0013] Furthermore, guide grooves are provided on both sides of the groove sidewall, and the stop blocks are slidably connected to the guide grooves; it also includes a linkage component that adjusts the distance between the two stop blocks as the power shaft rotates.

[0014] With the above settings, during the rotation of the power shaft, the linkage component brings the two stops closer together, that is, the distance between the two stops is reduced; the two stops with reduced distance can compress the two tilting arms to rotate a larger range, so as to be able to adapt to different tilting angles of the tripod sidewalls and have a wider range of applications.

[0015] Furthermore, the guide groove communicates with the chamber; the linkage component includes cylindrical cams located at both ends of the power shaft, the cylindrical cams are coaxially connected with the power shaft, the cylindrical cams are provided with curved grooves, and the stop blocks are slidably connected with the curved grooves.

[0016] With the above configuration, during the rotation of the power shaft, the power shaft drives two cylindrical cams to rotate. The cylindrical cams drive the stops to slide in the guide groove through the curved groove, so that the two stops move closer together, that is, the distance between the two stops decreases.

[0017] Furthermore, an extension shaft is rotatably connected to the end of the tilting arm away from the wall block. A third torsion spring is provided between the extension shaft and the stop block. A limit arm is coaxially connected to the extension shaft, and a first elastic layer is provided on the limit arm.

[0018] With the above settings, during the rotation of the tilting arm, the tilting arm drives the limiting arm to rotate synchronously, so that the limiting arm can automatically and adaptively rotate according to the tilt angle of the tripod side wall, and then deform the first elastic layer to abut against the side wall of the tripod.

[0019] The contact between the tilting arm and the side wall of the tripod may be point contact or line contact. The limiting arm can automatically adapt to the tilt angle of the side wall of the tripod, ensuring that the first elastic layer contacts the side wall of the tripod, expanding the contact area and enhancing the positioning effect.

[0020] In addition, the reduced distance between the two stops allows for a greater range of rotation of the two tilting arms, which in turn changes the range of rotation of the limiting arm. This makes it more suitable for different tilt angles of the tripod sidewalls, thus broadening its applicability. Furthermore, if the tilt angle of the tripod sidewalls remains unchanged, a greater range of rotation of the tilting and limiting arms allows for greater deformation of the first elastic layer, increasing the contact area with the sidewalls of the tripod and enhancing its positioning effect.

[0021] Furthermore, the clamping assembly includes a pressure plate, a lifting block that is vertically slidably connected to the side block, and a stop part for stopping the lifting block. The pressure plate is located in the groove and is fixedly connected to the lifting block. A second elastic layer is provided at the bottom of the pressure plate. A spring is provided between the lifting block and the side block.

[0022] With the above settings, pressing the lifting block moves downwards, compressing the spring; the lifting block drives the pressure plate and the second elastic layer to move downwards, so that the second elastic layer deforms and abuts against the tripod. The lifting block is stopped by the stop part, and the tripod can be pressed and positioned by the pressure plate and the second elastic layer; after the second elastic layer deforms, it contacts the tripod, and the contact between the two is more complete, resulting in a better positioning effect.

[0023] Furthermore, the power unit includes a rack that is vertically slidably connected to the side block and a gear that is coaxially connected to the power shaft. A synchronizing block is provided between the rack and the lifting block. The rack can move vertically within the cavity, and the rack meshes with the gear.

[0024] With the above configuration, during the downward movement of the lifting block, the lifting block drives the rack to move downward through the synchronization block, and the rack meshes with the gear to drive the power shaft to rotate.

[0025] Furthermore, the stop part includes a top groove on the top of the side block, a fixed block fixedly connected to the top of the side block, and a ratchet coaxially connected to the power shaft. A stop shaft is rotatably connected to the fixed block, and a fourth torsion spring is provided between the stop shaft and the fixed block. A pawl is coaxially connected to the stop shaft, and the free end of the pawl passes through the top groove and engages with the ratchet. The pawl can swing in the top groove.

[0026] With the above settings, pressing the lifting block moves it downwards, compressing the spring; the lifting block drives the pressure plate and the second elastic layer to move downwards, causing the second elastic layer to deform and abut against the tripod; the lifting block drives the rack to move downwards through the synchronizing block, the rack meshes with the gear to drive the power shaft to rotate, the second torsion spring deforms, and the power shaft drives the ratchet to rotate. Therefore, the downward movement of the lifting block and the rotation of the ratchet are synchronized. The one-way stopping effect of the pawl meshing with the ratchet can prevent the ratchet from automatically rotating in the opposite direction, thereby preventing the lifting block from moving upwards. This can limit the height position of the lifting block, the pressure plate and the second elastic layer, thus completing the stopping of the lifting block.

[0027] Furthermore, the adjustment assembly includes a working chamber located inside the worktable, a bidirectional screw rotatably connected to the worktable, and a drive component for rotating the bidirectional screw. The slide is connected to the working chamber, the bidirectional screw passes through the working chamber, and two sliders are threadedly connected to both ends of the bidirectional screw.

[0028] After positioning the two tripods using the above settings, the output shaft of the motor drives the bidirectional screw to rotate, causing the slider to move closer. The slider, through the side block, drives the tripods to move synchronously, bringing the two tripods closer to the desired position for subsequent welding. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of a bicycle frame welding equipment for bicycle production according to the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the middle workbench; Figure 3 for Figure 2 A structural diagram of the internal working area of ​​the central workbench; Figure 4 for Figure 2 A schematic diagram of the structure of the right side block; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 The main view; Figure 7 for Figure 4 A schematic diagram of a partial structure; Figure 8 for Figure 7 A schematic diagram of the internal chambers of the middle side block. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: worktable 10, slide 11, slider 12, working chamber 13, bidirectional screw 14, motor 15, side block 20, groove 21, wall block 22, first torsion spring 23, tilting arm 24, stop block 30, power block 31, chamber 32, support plate 33, bearing plate 34, second torsion spring 35, disc 36, movable arm 37, movable block 38, guide groove 40, cylindrical cam 41, third torsion spring 42, limiting arm 43, first elastic layer 44, pressure plate 50, lifting block 51, spring 52, second elastic layer 53, rack 60, gear 61, synchronizing block 62, top groove 70, fixing block 71, ratchet 72, fourth torsion spring 73, pawl 74, top seat 80, welding machine 81, strip groove 82, top block 83, first cylinder 84, second cylinder 85, bearing plate 86.

[0031] Example The basics are as follows: Figure 1 Appendix Figure 2 and attached Figure 3 As shown: A bicycle frame welding device for production includes a workbench 10, with sliding grooves 11 on both the left and right sides of the top of the workbench 10, the sliding grooves 11 being arranged along the length of the workbench 10; sliders 12 are slidably connected in the sliding grooves 11, the sliders 12 moving along the length of the workbench 10, the two sliders 12 moving in opposite directions; it also includes an adjustment component for adjusting the distance between the two sliders 12, the adjustment component including a working chamber 13 opened inside the workbench 10, a bidirectional screw 14 rotatably connected to the workbench 10, and a drive component for driving the bidirectional screw 14 to rotate, the sliding grooves 11 communicating with the working chamber 13, the bidirectional screw 14 passing through the working chamber 13, the two sliders 12 being threadedly connected to the two ends of the bidirectional screw 14 respectively, the sliders 12 being able to move along the length of the workbench 10 within the working chamber 13, the drive component being a motor 15, the motor 15 being fixedly connected to the workbench 10, the output shaft of the motor 15 being coaxially connected to the bidirectional screw 14.

[0032] As attached Figure 3 and attached Figure 4 As shown, a side block 20 is fixed to the slider 12. A groove 21 is opened on the side wall of the side block 20. That is, the right side wall of the left slider 12 is fixed to the side block 20, the left side wall of the right slider 12 is fixed to the side block 20, the right side wall of the left side block 20 is opened to the side wall of the right side block 20, and the two grooves 21 are arranged horizontally opposite each other.

[0033] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, a wall groove is opened on the side wall of the groove 21, and a wall block 22 is slidably connected in the wall groove. The wall block 22 moves along the length of the worktable 10 in the wall groove. Both sides of the wall block 22 near the groove opening of the groove 21 have end grooves. An end shaft is rotatably connected in the end groove. A first torsion spring 23 is fixed between the end shaft and the end groove. An inclined arm 24 is coaxially connected to the end shaft. The distance between the two inclined arms 24 gradually decreases from the groove opening of the groove 21 towards the wall block 22. The inclined arms 24 can rotate in the groove 21. The rotation directions of the two inclined arms 24 are opposite.

[0034] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8As shown, it also includes a power assembly for moving the free ends of the two tilting arms 24 closer together. The power assembly includes stop blocks 30 located on both sides of the wall block 22 within the groove 21, and a power unit for moving the wall block 22 along the groove direction. The stop blocks 30 are connected to the side wall of the groove 21 and are located on the movement trajectory of the tilting arm 24 away from the end groove. The power unit includes a power block 31 and a chamber 32 opened inside the side block 20. A support plate 33 and a bearing plate 34 located on both sides of the support plate 33 are fixedly connected to the chamber 32. The two bearing plates 34 are located on both sides of the support plate 33 along the length direction of the worktable 10. The bearing plates 34 and the chamber 32 are connected to the support plate 33. 2. Fixed connection; A power shaft is rotatably connected to the support plate 33, and a second torsion spring 35 is fixedly connected between the power shaft and the support plate 33; Both ends of the power shaft are coaxially connected to a disc 36, and a movable arm 37 is rotatably connected to the eccentric part of the disc 36; A movable block 38 is laterally slidably connected to the bearing plate 34, and the movable arm 37 moves along the length direction of the worktable 10. The end of the movable arm 37 away from the disc 36 is rotatably connected to the movable block 38, and the movable block 38 is fixedly connected to the power block 31; The wall groove communicates with the chamber 32, and the wall block 22 is fixedly connected to the power block 31; The power block 31 is located below the power shaft, and the movement of the power block 31 and the power shaft do not interfere with each other.

[0035] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, the stop block 30 is connected to the side wall of the groove 21. Specifically, guide grooves 40 are opened on both sides of the wall groove on the side wall of the groove 21. The two guide grooves 40 are located on both sides of the wall groove along the length direction of the worktable 10. The stop block 30 is slidably connected to the guide grooves 40, and the two stop blocks 30 move in opposite directions. It also includes a linkage component that adjusts the distance between the two stop blocks 30 as the power shaft rotates. The guide grooves 40 are connected to the chamber 32. The linkage component includes cylindrical cams 41 located at both ends of the power shaft. The distance between the two cylindrical cams 41 along the axial direction of the power shaft is less than the distance between the two discs 36. The two cylindrical cams 41 are symmetrically arranged on the power shaft. The cylindrical cams 41 are coaxially connected to the power shaft. Curved grooves are opened on the cylindrical cams 41, and the stop block 30 is slidably connected to the curved grooves. An extension shaft is rotatably connected to the end of the tilting arm 24 away from the wall block 22. A third torsion spring 42 is fixed between the extension shaft and the stop block 30. A limit arm 43 is coaxially connected to the extension shaft. The limit arm 43 is located above the tilting arm 24. The distance between the two limit arms 43 is less than the distance between the two tilting arms 24. A first elastic layer 44 is fixed to the limit arm 43. The first elastic layer 44 is a rubber layer.

[0036] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8As shown, a clamping assembly is provided at the groove 21. The clamping assembly includes a pressure plate 50 and a lifting block 51 that is vertically slidably connected to the side block 20. The pressure plate 50 is located in the groove 21 and is fixedly connected to the bottom of the lifting block 51. Both the pressure plate 50 and the lifting block 51 can move vertically within the groove 21. A second elastic layer 53, which is a rubber layer, is fixedly connected to the bottom of the pressure plate 50. A spring 52 is fixedly connected between the lifting block 51 and the side block 20.

[0037] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, it also includes a power unit for driving the power shaft to rotate. The power unit includes a rack 60 that is vertically slidably connected to the side block 20 and a gear 61 that is coaxially connected to the power shaft. A synchronizing block 62 is provided between the rack 60 and the lifting block 51. The rack 60 extends into the chamber 32 and can move vertically within the chamber 32. The rack 60 meshes with the gear 61.

[0038] As attached Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, it also includes a stop part for stopping the lifting block 51. The stop part includes a top groove 70 opened on the top of the side block 20, a fixed block 71 fixedly connected to the top of the side block 20, and a ratchet 72 coaxially connected to the power shaft. A stop shaft is rotatably connected to the fixed block 71, and a fourth torsion spring 73 is fixedly connected between the stop shaft and the fixed block 71. A pawl 74 is coaxially connected to the stop shaft. The free end of the pawl 74 passes through the top groove 70 and engages with the ratchet 72. The pawl 74 can swing in the top groove 70, that is, rotating the pawl 74 can separate the pawl 74 from the ratchet 72.

[0039] As attached Figure 1 As shown, it also includes a welding assembly, which includes a top seat 80 fixed to the worktable 10 and a welding machine 81. The top seat 80 has a strip groove 82, and a top block 83 is slidably connected in the strip groove 82. A first cylinder 84 is fixed in the strip groove 82, and the output shaft of the first cylinder 84 is fixed to the top block 83. A second cylinder 85 is fixed to the bottom of the top block 83, and a support plate 34 is fixed to the output shaft of the second cylinder 85. The welding machine 81 is fixed to the support plate 34.

[0040] The specific implementation process is as follows: In use, place the two triangular frames of the bicycle into the left and right grooves 21 respectively, so that the triangular frames are located below the second elastic layer 53, the included angle of the triangular frames is located in the groove 21, and the two side walls of the included angle of the triangular frames are located between the two first elastic layers 44.

[0041] Pressing the lifting block 51 downwards compresses the spring 52; the lifting block 51 drives the pressure plate 50 and the second elastic layer 53 downwards, causing the second elastic layer 53 to deform and abut against the tripod; the lifting block 51 drives the rack 60 downwards via the synchronizing block 62, and the rack 60 meshes with the gear 61, causing the power shaft to rotate, the second torsion spring 35 deforms, and the power shaft drives the ratchet 72 to rotate. Therefore, the downward movement of the lifting block 51 and the rotation of the ratchet 72 are synchronized. The one-way stop effect of the pawl 74 meshing with the ratchet 72 can prevent the ratchet 72 from automatically rotating in the opposite direction, thereby preventing the lifting block from moving downwards. Block 51 moves upward, thereby limiting the height of lifting block 51, pressure plate 50, and second elastic layer 53, thus stopping lifting block 51. The pressure plate 50 and second elastic layer 53 can then press and position the tripod. Furthermore, since the second elastic layer 53 is elastic, its deformation increases the contact area with the tripod, thereby improving the stability of the tripod's positioning. When it is necessary to cancel the positioning of the tripod, the pawl 74 is manually rotated to separate the pawl 74 from the ratchet 72, causing the fourth torsion spring 73 to deform.

[0042] During the rotation of the power shaft, the power shaft drives the wall block 22 to move towards the interior of the chamber 32 via the disc 36, movable arm 37, movable block 38, and power block 31. The wall block 22 drives the two tilting arms 24 to approach the two stops 30 in the groove 21. As the power shaft continues to rotate, the two tilting arms 24 are obstructed by the two stops 30 and rotate towards each other, that is, the free ends of the two tilting arms 24 approach each other, and the first torsion spring 23 deforms. During the rotation of the tilting arms 24, the tilting arms 24 drive the limiting arm 43 to rotate synchronously, so that the limiting arm 43 can adjust according to the tilt angle of the tripod side wall. After the automatic adaptive rotation, the first elastic layer 44 deforms and abuts against the side wall of the tripod, and the third torsion spring 42 deforms. That is, the two first elastic layers 44 can clamp and position the two side walls at the included angle of the tripod. Furthermore, since the first elastic layer 44 is elastic, the contact area can be increased after the first elastic layer 44 deforms and abuts against the tripod, thereby improving the stability of the tripod positioning. In summary, by pressing and clamping, the tripod can be positioned in the vertical and front-back directions, avoiding tripod displacement and ensuring the positioning effect.

[0043] During the rotation of the power shaft, the power shaft also drives the two cylindrical cams 41 to rotate. The cylindrical cams 41 drive the stop blocks 30 to slide in the guide groove 40 through the curved groove, so that the two stop blocks 30 are closer together, that is, the distance between the two stop blocks 30 is reduced. The two stop blocks 30 with reduced distance can squeeze the two tilting arms 24 to rotate a larger range, and also change the rotation range of the limiting arm 43, so as to be applicable to different tilt angles of the tripod side wall, and have a wider range of applications. Furthermore, if the tilt angle of the tripod side wall does not change, the greater the rotation range of the tilting arm 24 and the limiting arm 43, the greater the deformation of the first elastic layer 44, increasing the contact area with the side wall of the tripod and strengthening the positioning effect of the tripod.

[0044] After positioning the two tripods, start motor 15. The output shaft of motor 15 drives the bidirectional screw 14 to rotate, causing slider 12 to move closer. Slider 12 drives the tripods to move synchronously through side block 20, so that the two tripods move closer to the desired position. Then, turn off motor 15.

[0045] The first cylinder 84 is started, and the output shaft of the first cylinder 84 drives the top block 83 to move in the top groove 70, which in turn drives the welding machine 81 to move synchronously; the second cylinder 85 is started, and the output shaft of the second cylinder 85 drives the welding machine 81 to move vertically through the bearing plate 34; in this way, the position of the welding machine 81 can be adjusted according to the welding needs to complete the welding process.

[0046] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A frame welding apparatus for bicycle production, comprising a worktable, characterized in that: The workbench has sliding grooves on both sides of its top, with sliders slidably connected within the grooves. Each slider has a side block with a groove on its side wall, and a clamping assembly is located in the groove. A wall block is connected to the side wall of the groove, and end slots are located on both sides of the wall block near the groove opening. An end shaft is rotatably connected within the end slot, and a first torsion spring is located between the end shaft and the end slot. An inclined arm is coaxially connected to the end shaft, and the distance between the two inclined arms gradually decreases from the groove opening towards the wall block. The workbench also includes a welding assembly, an adjustment assembly for adjusting the distance between the two sliders, and a power assembly for moving the free ends of the two inclined arms closer together.

2. The bicycle frame welding apparatus for bicycle production according to claim 1, characterized in that: The sidewall of the groove is provided with a wall groove, and the wall block is slidably connected to the wall groove in the transverse direction; the power component includes a stop block located on both sides of the wall block in the groove, and a power unit for driving the wall block to move along the wall groove direction. The stop block is connected to the sidewall of the groove and is located on the movement trajectory of the tilting arm.

3. The bicycle frame welding apparatus for bicycle production as defined in claim 2, wherein: The power unit includes a power block, a chamber inside the side block, a support plate and load-bearing plates on both sides of the support plate, a power shaft rotatably connected to the support plate, and a second torsion spring between the power shaft and the support plate; both ends of the power shaft are coaxially connected to a disc, and a movable arm is rotatably connected to the eccentric part of the disc; a movable block is laterally slidably connected to the load-bearing plate, and the end of the movable arm away from the disc is rotatably connected to the movable block, which is fixedly connected to the power block; a wall groove communicates with the chamber, and a wall block is fixedly connected to the power block; it also includes a power unit for driving the power shaft to rotate.

4. The bicycle frame welding equipment according to claim 3, characterized in that: The sidewall of the groove is provided with guide grooves on both sides of the groove, and the stop block is slidably connected to the guide groove; it also includes a linkage component that adjusts the distance between the two stop blocks as the power shaft rotates.

5. The bicycle frame welding equipment according to claim 4, characterized in that: The guide groove communicates with the chamber; the linkage component includes cylindrical cams located at both ends of the power shaft, the cylindrical cams are coaxially connected with the power shaft, the cylindrical cams are provided with curved grooves, and the stop blocks are slidably connected with the curved grooves.

6. The bicycle frame welding equipment according to claim 5, characterized in that: An extension shaft is rotatably connected to the end of the tilting arm away from the wall block. A third torsion spring is provided between the extension shaft and the stop block. A limit arm is coaxially connected to the extension shaft, and a first elastic layer is provided on the limit arm.

7. The bicycle frame welding equipment according to claim 6, characterized in that: The clamping assembly includes a pressure plate, a lifting block that is vertically slidably connected to the side block, and a stop part for stopping the lifting block. The pressure plate is located in a groove and is fixedly connected to the lifting block. A second elastic layer is provided at the bottom of the pressure plate. A spring is provided between the lifting block and the side block.

8. The bicycle frame welding equipment according to claim 7, characterized in that: The power unit includes a rack that slides vertically to the side block and a gear that is coaxially connected to the power shaft. A synchronizing block is provided between the rack and the lifting block. The rack can move vertically within the chamber and meshes with the gear.

9. The bicycle frame welding equipment according to claim 8, characterized in that: The stop part includes a top groove on the top of the side block, a fixed block fixedly connected to the top of the side block, and a ratchet coaxially connected to the power shaft. A stop shaft is rotatably connected to the fixed block, and a fourth torsion spring is provided between the stop shaft and the fixed block. A pawl is coaxially connected to the stop shaft, and the free end of the pawl passes through the top groove and engages with the ratchet. The pawl can swing in the top groove.

10. The bicycle frame welding equipment according to claim 9, characterized in that: The adjustment assembly includes a working chamber inside the worktable, a bidirectional screw rotatably connected to the worktable, and a drive component for rotating the bidirectional screw. The slide is connected to the working chamber, the bidirectional screw passes through the working chamber, and two sliders are threaded to the two ends of the bidirectional screw respectively.

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