A bicycle frame fish scale welding equipment

Abstract

The present invention relates to the technical field of fine welding of bicycle frames, and specifically proposes a fish-scale welding fine welding device for bicycle frames, comprising an automated fish-scale welding mechanism, a trapezoidal fixing frame, an inserting and positioning mechanism, and a clamping mechanism. The fish-scale welding fine welding device designed by the present invention positions and fixes the frame by cooperating with the inserting and positioning mechanism and the clamping mechanism, thereby improving the convenience of fixing the frame during fish-scale welding and the accuracy of positioning the weld position, and the arc-shaped abutment in the clamping mechanism is locked to the vertical section of the T-shaped column under the pressure of the abutment and locking group, and the support guide rod, the oblique abutment rod, and the vertical section of the T-shaped column form a triangular stable structure, thereby achieving highly stable fixation of the frame, improving the firmness of the frame during fish-scale welding, and avoiding the shaking of the frame that reduces the aesthetics of the fish-scale welding.

Description

Technical Field

[0001] The invention relates to the technical field of fine welding of bicycle frames, and particularly provides fish-scale fine welding equipment for bicycle frames. Background Art

[0002] The welding of bicycle frames is a very critical step in the manufacturing process, which directly affects the strength, durability and overall performance of the frame. Figure 1 In order to improve the aesthetics, structural strength and appearance of bicycle welding, ordinary welding is usually performed first to ensure the basic structural integrity and strength of the frame, and then the welds of the bicycle frame are welded using the fish scale welding method to form a fish scale texture on the welds of the bicycle frame.

[0003] At present, when welding a vehicle frame, the frame is positioned and fixed by multiple fixing parts. Not only is the fixing stability not high, the frame is prone to shaking during welding, which affects the quality of the frame fish-scale welding. The frame fixing operation steps are cumbersome. In addition, since the equipment for fixing the frame will block the welding part of the frame, it is difficult to complete the fish-scale welding of the frame in one go after fixing. After the fish-scale welding on one side of the frame is completed, the frame needs to be removed, and then the frame needs to be turned upside down and fixed again to perform fish-scale welding on the other side of the frame, which reduces the convenience and efficiency of the overall fish-scale welding process. Summary of the Invention

[0004] In view of the above problems, an embodiment of the present application provides a fish-scale welding precision welding device for a bicycle frame to solve the technical problems in the related art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: a kind of fish scale welding precision welding equipment for a bicycle frame, the frame consists of a main frame rod, an oblique rod, a straight tube, a shaft sleeve and an insert sleeve, the shaft sleeve and the insert sleeve are respectively installed at the two ends of the main frame rod, the oblique rod is installed in the middle of the main frame rod, the side wall of the shaft sleeve is also installed with a straight tube, the end of the oblique rod away from the main frame rod is connected to the side wall of the straight tube, the main frame rod, the oblique rod and the straight tube form a triangle, the precision welding equipment for fish scale welding of the frame includes an automatic fish scale welding mechanism and two support seats, the automatic fish scale welding mechanism is an existing automatic fish scale welding machine.

[0006] An L-shaped bracket is rotatably connected to one of the support seats via a rotating shaft, and an L-shaped plate is rotatably connected to the other support seat via a rotating shaft. The vertical section of the L-shaped bracket and the horizontal section of the L-shaped plate are jointly installed with a trapezoidal fixing frame.

[0007] A T-shaped column is fixedly installed at the end of the horizontal section of the L-shaped bracket, and three support guide rods are evenly arranged along its circumference on the side wall of the horizontal section of the T-shaped column. The other end of the support guide rod away from the T-shaped column is fixedly connected to the horizontal section relative to the trapezoidal fixing frame.

[0008] The T-shaped column and the three supporting guide rods are jointly equipped with a clamping mechanism for fixing the vehicle frame, and the trapezoidal fixing frame is equipped with an inserting and positioning mechanism for positioning the vehicle frame.

[0009] The two fixing members are connected to each other to fix the straight cylinder, and the fixing members are connected to the fixing members on the T-shaped column side by the fixing members.

[0010] The frame is positioned and fixed by cooperating with the insertion positioning mechanism and the clamping mechanism, and then the welding points on the upper side of the frame are fish-scale welded by the automatic fish-scale welding mechanism, thereby improving the convenience and firmness of the frame fixation during fish-scale welding and the accuracy of the weld position positioning; after fish-scale welding on one side of the frame, the rotating shaft drives the frame to flip, and then fish-scale welding is performed on the other side of the frame by the automatic fish-scale welding mechanism, thereby realizing the convenience of fish-scale welding on both sides of the frame, avoiding the tedious steps of removing the frame and fixing it with another fixing device and fish-scale welding after the traditional precision welding equipment completes the fish-scale welding on one side of the frame.

[0011] In one possible implementation, the insertion and positioning mechanism includes a retaining group installed on the horizontal section connecting the trapezoidal fixing frame and the L-shaped plate, the retaining group is used to insert the two ends of the insertion sleeve to position the insertion sleeve, and an interpolation positioning group for interpolating and positioning the shaft sleeve is also installed at the corner of the trapezoidal fixing frame. The trapezoidal fixing frame is also equipped with a lifting unlocking group for unlocking the retaining group and the interpolation positioning group before the vehicle frame is placed. The lifting unlocking group can also cooperate with the pressing locking group to lock the retaining group and the interpolation positioning group.

[0012] In one possible implementation, the interpolation positioning group includes a fixed cylinder fixedly installed at the corner of the trapezoidal fixed frame, the side wall of the fixed cylinder is installed with inner support bars evenly arranged along its circumference through an insertion rod, the insertion rod moves along the radial direction of the fixed cylinder, and a connecting disk is installed on the top of the inner wall of the fixed cylinder through a push spring rod, a push rod is hinged between the lower end surface of the connecting disk and the insertion rod, and a pull rod is installed at the lower end of the connecting disk that slides through the fixed cylinder and the trapezoidal fixed frame.

[0013] In one possible implementation, the retaining group includes symmetrically arranged guide grooves opened in the horizontal section of the trapezoidal fixing frame, ear plates are slidably connected to the guide grooves, convex columns are installed on the opposite surfaces of the two ear plates, the opposite ends of the two convex columns are small diameter ends, a tension spring is installed between the ear plates and the guide grooves, a vertical bar located between the two ear plates is installed at the bottom of the trapezoidal fixing frame, a driving plate that slides up and down is connected to the vertical bar, and a swing rod is hinged between the driving plate and the ear plate.

[0014] In one possible implementation, the lifting and unlocking group includes a connecting frame installed between the pull rod and the two ends of the driving plate, and a guide rod is also installed at the lower end of the trapezoidal fixed frame. The connecting frame is slidably sleeved on the guide rod, and a downward locking assembly is installed on the lifting plate to lock the connecting frame.

[0015] In one possible implementation, the downward locking assembly includes a downward pressing strip installed on the side wall of the lifting plate, a plug post is installed on the lower end surface of the downward pressing strip, and a socket for plugging with the plug post is opened on the connecting frame.

[0016] In one possible implementation, the pressure locking group includes an inclined pressure rod that is obliquely installed on the top of the lifting plate and evenly arranged along its circumference. The inclined pressure rod corresponds to the inclined support rod one by one. The upper end of the inclined pressure rod is connected to the T-shaped column for up and down sliding. An inclined groove that passes through the upper and lower parts is opened at one end of the inclined support rod close to the arc-shaped support seat. The inclined pressure rod passes through the corresponding oblique groove, and a ball is connected to the inclined groove for rolling.

[0017] In one possible implementation, the elastic reset member is composed of a supplementary plate fixedly mounted on the support guide rod and a reset spring installed between the supplementary plate and the corresponding clamping seat, and the reset spring is mounted on the corresponding support guide rod.

[0018] In one possible implementation, the synchronous displacement group includes connecting grooves opened on opposite surfaces of two clamping seats for fixing the straight cylinder. The two connecting grooves are staggered along the axial direction of the straight cylinder. A guide groove is opened in the connecting groove. A rotating rod is hinged between the two connecting grooves. The end of the rotating rod slides along the corresponding guide groove, and the middle part of the rotating rod is rotatably connected to the corresponding support guide rod.

[0019] In a possible implementation, the connecting frame and the driving plate form a frame-shaped structure that is staggered from a welding point of the vehicle frame.

[0020] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. A bicycle frame fish-scale welding precision welding device designed by the present invention positions and fixes the frame through the cooperation of the insertion positioning mechanism and the clamping mechanism, thereby improving the convenience of fixing the frame during fish-scale welding and the accuracy of weld position positioning, and the arc-shaped abutment in the clamping mechanism is locked in the vertical section of the T-shaped column under the pressure of the abutment locking group, and the support guide rod, the oblique abutment rod and the vertical section of the T-shaped column form a triangular stable structure, thereby achieving highly stable fixation of the frame, improving the firmness of the frame during fish-scale welding, and avoiding the reduction of the aesthetics of the fish-scale weld due to the shaking of the frame.

[0021] 2. The trapezoidal fixing frame, the insertion positioning mechanism and the clamping mechanism for fixing the vehicle frame in the present invention do not block the vehicle frame. After the fish-scale welding on one side of the vehicle frame, the rotating shaft drives the vehicle frame to flip over, and then the fish-scale welding is performed on the other side of the vehicle frame by the automated fish-scale welding mechanism, thereby improving the convenience of fish-scale welding on both sides of the vehicle frame, and solving the problem that after the traditional precision welding equipment completes the fish-scale welding on one side of the frame, the frame needs to be removed and flipped over to fix the frame again, and the steps of fish-scale welding are cumbersome.

[0022] 3. The three clamping groups in the present invention simultaneously clamp and fix the frame under the driving action of the pressing and locking groups, thereby improving the convenience and efficiency of the frame clamping and ensuring the stability of the frame during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention.

[0025] Figure 2 It is a second overall three-dimensional structural schematic diagram of the present invention.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0027] Figure 4 It is a schematic cross-sectional view of the reinforcement group of the present invention.

[0028] Figure 5 It is a schematic cross-sectional view of the interpolation positioning group of the present invention.

[0029] Figure 6It is a top sectional view of the synchronous displacement group of the present invention.

[0030] Reference numerals:

[0031] 1. Frame; 10. Main frame rod; 11. Oblique rod; 12. Straight tube; 13. Bushing; 14. Insert sleeve; 2. Support seat; 3. Automatic fish scale welding mechanism; 4. L-shaped bracket; 40. L-shaped plate; 41. Trapezoidal fixing frame; 5. T-shaped column; 6. Support guide rod; 7. Clamping mechanism; 70. Clamping seat; 71. Synchronous displacement group; 710. Connecting groove; 711. Guide groove; 712. Rotating rod; 72. Elastic reset member; 720. Supplementary plate; 721. Reset spring; 73. Oblique push rod; 74. Arc push seat; 75. Lifting plate; 76. Push lock Group; 760, oblique pressure rod; 761, oblique groove; 8, insertion and positioning mechanism; 80, fixing group; 801, guide groove; 802, ear plate; 803, convex column; 804, retracting spring; 805, vertical bar; 806, driving plate; 807, swing rod; 81, internal insertion positioning group; 810, fixing cylinder; 811, inner support bar; 812, insertion rod; 813, connecting plate; 814, push rod; 815, pull rod; 816, push spring rod; 82, lifting and unlocking group; 820, connecting frame; 821, guide rod; 830, lower pressure strip; 831, insertion column. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] See Figure 1 and Figure 2 A fish-scale welding precision welding equipment for a bicycle frame, wherein the frame 1 is composed of a main frame rod 10, an oblique rod 11, a straight cylinder 12, a shaft sleeve 13 and an insert sleeve 14, wherein the shaft sleeve 13 and the insert sleeve 14 are respectively installed at both ends of the main frame rod 10, the oblique rod 11 is installed in the middle of the main frame rod 10, and the side wall of the shaft sleeve 13 is also installed with a straight cylinder 12, and the end of the oblique rod 11 away from the main frame rod 10 is connected to the side wall of the straight cylinder 12, and the main frame rod 10, the oblique rod 11 and the straight cylinder 12 form a triangle, and the precision welding equipment for fish-scale welding of the frame 1 includes an automatic fish-scale welding mechanism 3 and two support seats 2, and the automatic fish-scale welding mechanism 3 is an existing automatic fish-scale welding machine.

[0035] See Figure 1 and Figure 2 An L-shaped bracket 4 is rotatably connected to one support base 2 via a rotating shaft, and an L-shaped plate 40 is rotatably connected to the other support base 2 via a rotating shaft. A trapezoidal fixing bracket 41 is mounted on the vertical section of the L-shaped bracket 4 and the horizontal section of the L-shaped plate 40. The rotating shaft is connected to an external drive source (such as a motor) that drives it to flip 180 degrees each time.

[0036] See Figure 1 and Figure 2 A T-shaped column 5 is fixedly installed at the end of the horizontal section of the L-shaped bracket 4, and three support guide rods 6 are installed on the side wall of the horizontal section of the T-shaped column 5, which are evenly arranged along its circumference. The other end of the support guide rod 6 away from the T-shaped column 5 is fixedly connected to the horizontal section of the trapezoidal fixing frame 41.

[0037] See Figure 1 and Figure 2 The T-shaped column 5 and the three supporting guide rods 6 are jointly equipped with a clamping mechanism 7 for fixing the frame 1, and the trapezoidal fixing frame 41 is equipped with an insertion positioning mechanism 8 for positioning the frame 1.

[0038] The vehicle frame 1 after conventional welding is placed on the clamping mechanism 7 and the insertion and positioning mechanism 8 . After the vehicle frame 1 is pre-positioned by the insertion and positioning mechanism 8 , the vehicle frame 1 is clamped with high stability by the clamping mechanism 7 .

[0039] See Figure 1 、 Figure 3 and Figure 6 The clamping mechanism 7 includes three groups of clamping groups respectively installed on the three support guide rods 6. Each clamping group consists of two clamping seats 70 arranged opposite to each other. The two clamping seats 70 in the clamping group for fixing the straight cylinder 12 are slidably connected to the corresponding support guide rods 6. The clamping seats 70 on the side close to the T-shaped column 5 in the other two clamping groups are fixedly installed on the corresponding support guide rods 6, and the clamping seats 70 on the side away from the T-shaped column 5 are slidably connected to the corresponding support guide rods 6. The two clamping seats for fixing the straight cylinder 12 A synchronous displacement group 71 is connected between the seats 70. In each clamping group, an elastic reset member 72 is installed between the clamping seat 70 on the side away from the T-shaped column 5 and the corresponding support guide rod 6, and an oblique push rod 73 is installed at the lower end of the clamping seat 70 on the side away from the T-shaped column 5. An arc-shaped push seat 74 is installed at the end of the oblique push rod 73. The vertical section of the T-shaped column 5 is slidably sleeved up and down with a lifting plate 75. The lifting plate 75 is equipped with a pressure locking group 76 that drives the oblique push rod 73 to press against the side wall of the vertical section of the T-shaped column 5 through the arc-shaped push seat 74 when sliding downward.

[0040] The two clamping seats 70 for fixing the straight tube 12 are both slidably connected to the corresponding same supporting guide rod 6, so that there is a certain amount of movable space between the three clamping groups when the frame 1 is placed, so as to facilitate the placement of the frame 1 on the clamping mechanism 7 and the insertion positioning mechanism 8, and avoid the three clamping seats 70 located on the inner side of the triangle formed by the main frame rod 10, the oblique rod 11, and the straight tube 12 being fixed in position, which makes it inconvenient to place the frame 1.

[0041] After the insertion and positioning mechanism 8 has pre-positioned and fixed the vehicle frame 1, the lifting plate 75 is driven downward by an existing driving source (such as an electric slider, a cylinder, etc.). The lifting plate 75 drives the oblique push rod 73 to move toward the T-shaped column 5 through the pressing and locking group 76. The oblique push rod 73 drives the arc push seat 74 to move toward the side wall of the vertical section of the T-shaped column 5, and at the same time drives the clamping seat 70 connected to the oblique push rod 73 to move toward the vehicle frame 1. At this time, the two clamping seats 70 corresponding to the straight cylinder 12 are connected in the synchronous displacement group 71. Under the action of the connection, it moves simultaneously toward the side wall of the straight tube 12 until the three clamping groups clamp the main frame rod 10, the oblique rod 11, and the straight tube 12 respectively, and at this time the arc-shaped support seat 74 is locked in the vertical section of the T-shaped column 5 under the pressure of the pressure locking group 76, and the support guide rod 6, the oblique support rod 73 and the vertical section of the T-shaped column 5 form a triangular stable structure, thereby achieving high-stability fixation of the frame 1, improving the firmness of the frame 1 during fish-scale welding, and avoiding the problem of reduced aesthetics of fish-scale welding due to shaking of the frame 1.

[0042] The vehicle frame 1 is positioned and fixed by cooperating with the insertion positioning mechanism 8 and the clamping mechanism 7, and then the welding point on the upper side of the vehicle frame 1 is fish-scale welded by the automatic fish-scale welding mechanism 3, thereby improving the convenience and firmness of the fixation of the vehicle frame 1 and the accuracy of the weld position positioning; after the fish-scale welding on one side of the vehicle frame 1, the rotating shaft drives the vehicle frame 1 to flip over, and then the fish-scale welding on the other side of the vehicle frame 1 is performed by the automatic fish-scale welding mechanism 3, thereby improving the convenience of fish-scale welding on both sides of the vehicle frame 1, and solving the problem that after the traditional precision welding equipment completes the fish-scale welding on one side of the vehicle frame 1, the frame 1 needs to be removed and flipped over to fix the frame 1 again, and the steps of fish-scale welding are cumbersome.

[0043] See Figure 1 、 Figure 3 and Figure 6 The pressing and locking group 76 includes an inclined pressure rod 760 that is installed obliquely on the top of the lifting plate 75 and is evenly arranged along its circumference. The inclined pressure rod 760 corresponds to the inclined support rod 73 one by one. The upper end of the inclined pressure rod 760 is connected to the T-shaped column 5 for vertical sliding. The end of the inclined support rod 73 close to the arc-shaped support seat 74 is provided with an inclined groove 761 that passes through the upper and lower parts. The inclined pressure rod 760 passes through the corresponding inclined groove 761, and a ball (not shown in the figure) is connected in a rolling manner in the inclined groove 761.

[0044] See Figure 1The elastic reset member 72 is composed of a supplementary plate 720 fixedly mounted on the support guide rod 6 and a reset spring 721 installed between the supplementary plate 720 and the corresponding clamping seat 70. The reset spring 721 is mounted on the corresponding support guide rod 6.

[0045] When the lifting plate 75 drives the inclined pressure rod 760 to move downward, the side wall of the inclined pressure rod 760 contacts the ball in the inclined groove 761, and the inclined pressure rod 760 pushes the inclined groove 761 to drive the inclined support rod 73 to move toward the axis of the T-shaped column 5. The inclined support rod 73 drives the clamping seat 70 to move toward the corresponding part of the frame 1. At this time, the return spring 721 contracts until the clamping seat 70 clamps the frame 1 and fixes it. The inclined surface of the inclined pressure rod 760 presses and fits with the inclined groove 761, thereby pressing and locking the inclined support rod 73 and the arc-shaped support seat 74 to the vertical section of the T-shaped column 5. The three clamping groups clamp and fix the frame 1 at the same time under the driving action of the pressing and locking group 76, thereby improving the convenience of clamping the frame 1.

[0046] See Figure 1 and Figure 6 The synchronous displacement group 71 includes connecting grooves 710 opened on opposite surfaces of two clamping seats 70 for fixing the straight cylinder 12. The two connecting grooves 710 are staggered along the axial direction of the straight cylinder 12. A guide groove 711 is opened in the connecting groove 710. A rotating rod 712 is hinged between the two connecting grooves 710. The end of the rotating rod 712 slides along the corresponding guide groove 711, and the middle part of the rotating rod 712 is rotatably connected to the corresponding support guide rod 6.

[0047] When the clamping seat 70 connected to the oblique push rod 73 moves under the push of the oblique pressure rod 760, it pushes the rotating rod 712 to rotate around the connection between it and the support guide rod 6, and the end of the rotating rod 712 slides along the corresponding guide groove 711, so that the two clamping seats 70 connected to the synchronous displacement group 71 move synchronously toward the outer wall of the straight cylinder 12, thereby fixing the straight cylinder 12.

[0048] See Figure 1 and Figure 3 The insertion and positioning mechanism 8 includes a retaining group 80 installed on the horizontal section connecting the trapezoidal fixing frame 41 and the L-shaped plate 40. The retaining group 80 is used to insert the two ends of the insertion sleeve 14 to position the insertion sleeve 14. The corners of the trapezoidal fixing frame 41 are also equipped with an interpolation positioning group 81 for interpolating and positioning the shaft sleeve 13. The trapezoidal fixing frame 41 is also equipped with a lifting unlocking group 82 for unlocking the retaining group 80 and the interpolation positioning group 81 before the vehicle frame 1 is placed. The lifting unlocking group 82 can also cooperate with the pressing locking group 76 to lock the retaining group 80 and the interpolation positioning group 81, thereby realizing the function of integrated driving of the retaining group 80 and the interpolation positioning group 81.

[0049] See Figure 1 and Figure 5 The interpolation positioning group 81 includes a fixed cylinder 810 fixedly installed at the corner of the trapezoidal fixed frame 41. The side wall of the fixed cylinder 810 is installed with inner support bars 811 evenly arranged along its circumference through an insertion rod 812. The insertion rod 812 moves along the radial direction of the fixed cylinder 810. A connecting disk 813 is installed on the top of the inner wall of the fixed cylinder 810 through a push spring rod 816. A push rod 814 is hinged between the lower end surface of the connecting disk 813 and the insertion rod 812. The lower end of the connecting disk 813 is installed with a pull rod 815 that slides through the fixed cylinder 810 and the trapezoidal fixed frame 41.

[0050] Before the frame 1 is placed and fixed, the pull rod 815 is driven to move upward through the lifting and unlocking group 82. The pull rod 815 pushes the connecting plate 813 to move upward and squeezes the push spring rod 816 to contract. The connecting plate 813 drives the insertion rod 812 and the inner support bar 811 to move along the radial direction of the fixed cylinder 810 toward the axis of the fixed cylinder 810 through the push rod 814 until the inner support bar 811 contacts the outer wall of the fixed cylinder 810. At this time, the diameter of the circle formed by the multiple inner support bars 811 arranged circumferentially is smaller than the inner diameter of the sleeve 13, so that the sleeve 13 of the frame 1 can be easily mounted on the multiple inner support bars 811 arranged circumferentially.

[0051] After the vehicle frame 1 is placed, the lifting and unlocking group 82 is released, so that the connecting plate 813 and the pull rod 815 move downward under the elastic force of the push spring rod 816. The connecting plate 813 pushes the insertion rod 812 and the inner support bar 811 toward the inner wall of the sleeve 13 through the push rod 814 until the inner support bar 811 is tightly pressed against the inner wall of the sleeve 13.

[0052] See Figure 1 and Figure 4 The retaining group 80 includes a symmetrically arranged guide groove 801 opened in the horizontal section of the trapezoidal fixing frame 41, and an ear plate 802 is slidably connected to the guide groove 801. The opposite surfaces of the two ear plates 802 are installed with a convex column 803, and the opposite ends of the two convex columns 803 are small-diameter ends. A tension spring 804 is installed between the ear plate 802 and the guide groove 801, and a vertical bar 805 located between the two ear plates 802 is installed at the bottom of the trapezoidal fixing frame 41. A driving plate 806 that slides up and down is connected to the vertical bar 805, and a swing rod 807 is hinged between the driving plate 806 and the ear plate 802.

[0053] When the lifting and unlocking group 82 drives the driving plate 806 to move upward, the driving plate 806 pushes the ear plate 802 through the swing rod 807 to drive the convex column 803 to move toward the corner of the trapezoidal fixing frame 41, thereby increasing the distance between the two convex columns 803 to facilitate the insertion sleeve 14 into the space between the two convex columns 803.

[0054] After the vehicle frame 1 is placed, the lifting and unlocking group 82 is released, and the driving plate 806 moves downward under the action of its own gravity. At the same time, the tension spring 804 drives the ear plate 802 and the convex column 803 to move toward the end of the insertion sleeve 14 under the action of elastic force, until the small diameter section of the convex column 803 is inserted into the insertion sleeve 14 and the large diameter section ends of the two convex columns 803 are tightly pressed against the two ends of the insertion sleeve 14, thereby achieving the positioning of the insertion sleeve 14.

[0055] The frame 1 obtains a pre-positioning and locking effect under the cooperation of the fixing group 80 and the interpolation positioning group 81, which not only improves the convenience of fixing the frame 1, but also improves the accuracy of determining the position of the weld of the frame 1.

[0056] See Figure 1 and Figure 4 The lifting and unlocking group 82 includes a connecting frame 820 installed between the pull rod 815 and the two ends of the driving plate 806. A guide rod 821 is also installed at the lower end of the trapezoidal fixed frame 41. The connecting frame 820 is slidably sleeved on the guide rod 821, and a downward locking component for locking the connecting frame 820 is installed on the lifting plate 75.

[0057] See Figure 1 and Figure 2 The downward locking assembly includes a lower pressing strip 830 installed on the side wall of the lifting plate 75, a plug post 831 is installed on the lower end surface of the lower pressing strip 830, and a socket for plugging with the plug post 831 is opened on the connecting frame 820.

[0058] The connecting frame 820 is used to connect the pull rod 815 and the driving plate 806, thereby driving the pull rod 815 and the driving plate 806 to move upward at the same time. When the frame 1 is placed, the connecting frame 820 moves to the initial position under the action of the restoring elastic force of the retraction spring 804 and the push spring rod 816, and the lifting plate 75 moves downward. The lifting plate 75 drives the lower pressure bar 830 to move downward, and the plug post 831 on the lower pressure bar 830 is inserted into the socket to lock the position of the connecting frame 820, thereby realizing the integrated locking function of the clamping mechanism 7 and the insertion positioning mechanism 8, which greatly improves the convenience of positioning and fixing the frame 1.

[0059] See Figure 2 The connecting frame 820 and the driving plate 806 form a frame structure that is staggered from the welding position of the frame 1, thereby avoiding obstruction when the fish scale welding is performed after the frame 1 is flipped over.

[0060] See Figures 1-6During specific operation, the vehicle frame 1 after ordinary welding is placed on the clamping mechanism 7 and the insertion and positioning mechanism 8, and the vehicle frame 1 is pre-positioned by the insertion and positioning mechanism 8, so that the vehicle frame 1 can obtain a pre-positioning and locking effect under the cooperation of the fixing group 80 and the interpolation positioning group 81, which not only improves the convenience of fixing the vehicle frame 1, but also improves the accuracy of determining the weld position of the vehicle frame 1.

[0061] When the locking mechanism 8 has pre-positioned and fixed the vehicle frame 1, the lifting plate 75 is driven downward by the existing driving source (such as an electric slider, a cylinder, etc.), and the lifting plate 75 drives the oblique push rod 73 to move toward the T-shaped column 5 through the pressing locking group 76, and the oblique push rod 73 drives the arc push seat 74 to move toward the side wall of the vertical section of the T-shaped column 5 until the three clamping groups respectively clamp the main frame rod 10, the oblique rod 11, and the straight tube 12, the supporting guide rod 6, the oblique push rod 73 and the vertical section of the T-shaped column 5 form a triangular stable structure, thereby achieving high stability fixation of the vehicle frame 1, improving the firmness of the frame 1 during fish scale welding, and preventing the frame 1 from shaking and causing the fish scale welding to deteriorate in appearance; at the same time, the lifting plate 75 drives the lower pressure bar 830 to move downward, and the plug column 831 on the lower pressure bar 830 is inserted into the socket to lock the position of the connecting frame 820, realizing the integrated locking function of the clamping mechanism 7 and the insertion and positioning mechanism 8.

[0062] Then, the frame 1 is fish-scale welded by the automated fish-scale welding mechanism 3. After the fish-scale welding on one side of the frame 1 is completed, the rotating shaft drives the frame 1 to flip 180 degrees under the driving action of an external driving source (such as a motor), and then the other side of the frame 1 is fish-scale welded by the automated fish-scale welding mechanism 3, thereby improving the convenience of fish-scale welding on both sides of the frame 1.

[0063] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bicycle frame fish scale welding precision welding device, wherein the frame (1) is composed of a main frame rod (10), an inclined rod (11), a straight tube (12), a shaft sleeve (13) and an insert sleeve (14), and the fish scale welding precision welding device for the frame (1) includes an automated fish scale welding mechanism (3) and two support seats (2), and is characterized in that: An L-shaped bracket (4) is rotatably connected to one of the support bases (2), and an L-shaped plate (40) is rotatably connected to the other support base (2). A trapezoidal fixing frame (41) is mounted on the vertical section of the L-shaped bracket (4) and the horizontal section of the L-shaped plate (40); A T-shaped column (5) is fixedly mounted on the end of the horizontal section of the L-shaped bracket (4); three support guide rods (6) are evenly arranged along the circumference of the horizontal section of the T-shaped column (5); the other end of the support guide rod (6) away from the T-shaped column (5) is fixedly connected to the horizontal section of the trapezoidal fixing frame (41); a clamping mechanism (7) for fixing the vehicle frame (1) is mounted on the T-shaped column (5) and the three support guide rods (6); and an insertion positioning mechanism (8) for positioning the vehicle frame (1) is mounted on the trapezoidal fixing frame (41); The clamping mechanism (7) comprises three clamping groups respectively mounted on three supporting guide rods (6), each clamping group consisting of two clamping seats (70) arranged opposite to each other, wherein the two clamping seats (70) in the clamping group for fixing the straight cylinder (12) are slidably connected to the corresponding supporting guide rods (6), and the clamping seats (70) on the side close to the T-shaped column (5) in the other two clamping groups are fixedly mounted on the corresponding supporting guide rods (6), and the clamping seats (70) on the side away from the T-shaped column (5) are slidably connected to the corresponding supporting guide rods (6), for fixing the straight cylinder (12). A synchronous displacement group (71) is connected between the two clamping seats (70) for fixing the cylinder (12). In each clamping group, an elastic reset member (72) is installed between the clamping seat (70) on the side away from the T-shaped column (5) and the corresponding support guide rod (6). An oblique support rod (73) is installed at the lower end of the clamping seat (70) on the side away from the T-shaped column (5). An arc-shaped support seat (74) is installed at the end of the oblique support rod (73). A lifting plate (75) is provided on the vertical section of the T-shaped column (5) for sliding up and down. A pressing locking group (76) is installed on the lifting plate (75). The insertion and positioning mechanism (8) comprises a fixing group (80) installed on a horizontal section connecting the trapezoidal fixing frame (41) and the L-shaped plate (40), the fixing group (80) being used to insert the two ends of the insert sleeve (14) to position the insert sleeve (14), an interpolation positioning group (81) for interpolating and positioning the shaft sleeve (13) is also installed at the corner of the trapezoidal fixing frame (41), and a lifting unlocking group (82) is also installed on the trapezoidal fixing frame (41) for unlocking the fixing group (80) and the interpolation positioning group (81) before the vehicle frame (1) is placed, and the lifting unlocking group (82) can also cooperate with the pressing locking group (76) to lock the fixing group (80) and the interpolation positioning group (81); The pressing and locking group (76) includes an oblique pressure rod (760) which is evenly arranged along the circumference of the lifting plate (75) and is obliquely installed on the top of the lifting plate (75). The oblique pressure rod (760) corresponds to the oblique pressure rod (73) one by one. The upper end of the oblique pressure rod (760) is connected to the T-shaped column (5) in an upward and downward sliding manner. An oblique groove (761) which runs through the upper and lower ends of the oblique pressure rod (73) close to the arc-shaped pressure seat (74) is provided. The oblique pressure rod (760) passes through the corresponding oblique groove (761). A ball is connected in a rolling manner in the oblique groove (761).

2. The fish scale welding equipment for bicycle frames according to claim 1, characterized in that: The interpolation positioning group (81) includes a fixed cylinder (810) fixedly installed at a corner of a trapezoidal fixed frame (41); the side wall of the fixed cylinder (810) is installed with inner support bars (811) evenly arranged along its circumference through an insertion rod (812); the insertion rod (812) moves along the radial direction of the fixed cylinder (810); the top of the inner wall of the fixed cylinder (810) is installed with a connecting disk (813) through a push spring rod (816); the lower end surface of the connecting disk (813) is hinged with a push rod (814) between the insertion rod (812); and the lower end of the connecting disk (813) is installed with a pull rod (815) that slides through the fixed cylinder (810) and the trapezoidal fixed frame (41).

3. The fish scale welding equipment for bicycle frames according to claim 2, characterized in that: The fixing group (80) includes a symmetrically arranged guide groove (801) opened on the horizontal section of the trapezoidal fixing frame (41), an ear plate (802) is slidably connected to the guide groove (801), and convex columns (803) are installed on the opposite surfaces of the two ear plates (802), and the opposite ends of the two convex columns (803) are small-diameter ends. A tension spring (804) is installed between the ear plate (802) and the guide groove (801), and a vertical bar (805) located between the two ear plates (802) is installed at the bottom of the trapezoidal fixing frame (41), and a driving plate (806) that slides up and down is connected to the vertical bar (805), and a swing rod (807) is hinged between the driving plate (806) and the ear plate (802).

4. The fish scale welding equipment for bicycle frames according to claim 1, characterized in that: The synchronous displacement group (71) comprises connecting grooves (710) provided on opposite surfaces of two clamping seats (70) for fixing the straight cylinder (12). The two connecting grooves (710) are arranged alternately along the axial direction of the straight cylinder (12). A guide groove (711) is provided in the connecting groove (710). A rotating rod (712) is hinged between the two connecting grooves (710). The end of the rotating rod (712) slides along the corresponding guide groove (711), and the middle of the rotating rod (712) is rotatably connected to the corresponding supporting guide rod (6).

5. The fish scale welding equipment for bicycle frames according to claim 3, characterized in that: The lifting and unlocking group (82) includes a connecting frame (820) installed between the pull rod (815) and the two ends of the driving plate (806), and a guide rod (821) is also installed at the lower end of the trapezoidal fixed frame (41). The connecting frame (820) is slidably sleeved on the guide rod (821) up and down, and a downward locking component for locking the connecting frame (820) is installed on the lifting plate (75).

6. The fish scale welding equipment for bicycle frames according to claim 5, characterized in that: The downward locking assembly comprises a lower pressing strip (830) mounted on the side wall of the lifting plate (75); a plug post (831) is mounted on the lower end surface of the lower pressing strip (830); and a socket for plugging and cooperating with the plug post (831) is provided on the connecting frame (820).

7. The fish scale welding equipment for bicycle frames according to claim 1, characterized in that: The elastic reset member (72) is composed of a supplementary plate (720) fixedly mounted on the support guide rod (6) and a reset spring (721) installed between the supplementary plate (720) and the corresponding clamping seat (70), and the reset spring (721) is mounted on the corresponding support guide rod (6).

8. The fish scale welding equipment for bicycle frames according to claim 5, characterized in that: The connecting frame (820) and the driving plate (806) form a frame-shaped structure that is staggered with respect to the welding position of the vehicle frame (1).

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