Pneumatic positioning and clamping tool for bicycle frame welding

Abstract

A bicycle frame welding pneumatic positioning and clamping tool comprises a base, a front triangular component positioning and clamping mechanism, a lower fork pipe auxiliary positioning and clamping mechanism, an upper and lower fork pipe positioning and clamping mechanism and a lug positioning and clamping mechanism. Two rows of assembling holes are formed in a workbench of the base. The front triangular component positioning and clamping mechanism, the lower fork pipe auxiliary positioning and clamping mechanism, the upper and lower fork pipe positioning and clamping mechanism and the lug positioning and clamping mechanism are sequentially arranged from left to right and assembled with assembly holes in a base workbench, and a front triangular component pneumatic positioning and clamping assembly is arranged in the front triangular component positioning and clamping mechanism. A pneumatic lower fork pipe auxiliary positioning and clamping assembly is arranged in the lower fork pipe auxiliary positioning and clamping mechanism, a pneumatic upper and lower fork pipe positioning and clamping assembly is arranged in the upper and lower fork pipe positioning and clamping mechanism, and a pneumatic lug positioning and clamping assembly is arranged in the lug positioning and clamping mechanism. The automatic welding device is matched with a robot welding process, and the purposes of improving product quality and working efficiency and reducing production cost are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle production equipment technical field, concretely is a kind of pneumatic positioning clamping tool for bicycle frame welding. BACKGROUND

[0002] As shown in the accompanying drawings, Figure 1 Bicycle frame 1 is usually composed of front triangular component 1-1 and rear triangular component 1-2, wherein front triangular component 1-1 includes head tube 1-1-1, upper tube 1-1-2, lower tube 1-1-3, vertical tube 1-1-4 and five-way tube 1-1-5, and rear triangular component includes upper fork tube assembly (provided with two parts arranged symmetrically left and right) 1-2-1, lower fork tube assembly (provided with two parts arranged symmetrically left and right) 1-2-2, lug 1-2-3, rear fender upper bracket 1-2-4 and rear fender lower bracket 1-2-5. When welding bicycle frame, generally first complete welding of front triangular component 1-1 and rear triangular component 1-2, and then weld the two into one. With continuous improvement of bicycle production process, traditional manual welding method is gradually replaced by robot automatic welding method, in order to adapt to the process characteristics of robot welding, it is necessary to adjust the welding process of bicycle frame, and generally arrange the welding procedures of rear fender upper bracket 1-2-4 and rear fender lower bracket 1-2-5 in rear triangular component after the welding of overall frame is completed; in addition, no fender part is arranged on some mountain and road bicycles, which leads to the left and right two parts of upper fork tube assembly 1-2-1 and lower fork tube assembly 1-2-2 in rear triangular component being in split state during overall frame welding operation, and in this case, the traditional bicycle frame welding tool cannot guarantee reliable positioning of workpiece. SUMMARY

[0003] The utility model provides a kind of bicycle frame welding pneumatic positioning clamping tool, it is matched with robot automatic welding process of bicycle frame by the cooperation of base, front triangular component positioning clamping mechanism, upper and lower fork tube positioning clamping mechanism, lower fork tube auxiliary positioning clamping mechanism and lug positioning clamping mechanism, to improve workpiece welding quality and work efficiency, reduce the purpose of production cost.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A bicycle frame welding pneumatic positioning and clamping tool, comprising a base, a front triangular component positioning and clamping mechanism, a lower fork tube auxiliary positioning and clamping mechanism, an upper and lower fork tube positioning and clamping mechanism, and an ear piece positioning and clamping mechanism; the base is provided with a workbench installed on a horizontal ground, and two rows of assembly holes are arranged on the workbench in the left-right direction; the front triangular component positioning and clamping mechanism, the lower fork tube auxiliary positioning and clamping mechanism, the upper and lower fork tube positioning and clamping mechanism, and the ear piece positioning and clamping mechanism are arranged in sequence from left to right, and are respectively assembled with the assembly holes on the base workbench in a detachable manner; a front triangular component pneumatic positioning and clamping assembly is arranged in the front triangular component positioning and clamping mechanism, a pneumatic lower fork tube auxiliary positioning and clamping assembly is arranged in the lower fork tube auxiliary positioning and clamping mechanism, a pneumatic upper and lower fork tube positioning and clamping assembly is arranged in the upper and lower fork tube positioning and clamping mechanism, and a pneumatic ear piece positioning and clamping assembly is arranged in the ear piece positioning and clamping mechanism.

[0006] The above-mentioned bicycle frame welding pneumatic positioning and clamping tool, the pneumatic lower fork tube auxiliary positioning and clamping assembly comprises a cylinder mounting seat and two groups of finger cylinders arranged symmetrically in front and back; the cylinder mounting seat is provided with two groups of first horizontal sliding grooves extending in the left-right direction, and the cylinder mounting seat is assembled with the corresponding assembly holes on the base workbench through a bolt assembly penetrating through the first horizontal sliding grooves; the finger cylinder is provided with a pneumatic finger capable of being opened and closed in the front-back direction.

[0007] The above-mentioned bicycle frame welding pneumatic positioning and clamping tool, the upper and lower fork tube positioning and clamping mechanism is further provided with an L-shaped support, the horizontal arm of the L-shaped support is provided with two groups of second horizontal sliding grooves extending in the left-right direction, the L-shaped support is assembled with the corresponding assembly holes on the base workbench through a bolt assembly penetrating through the second horizontal sliding grooves, a first vertical sliding groove extending in the up-down direction is arranged on the vertical arm of the L-shaped support, and the upper and lower fork tube positioning and clamping assembly is matched with the first vertical sliding groove; the upper and lower fork tube positioning and clamping assembly comprises two parts arranged in up and down directions, and an upper and lower fork tube positioning unit and an upper and lower fork tube pressing unit are arranged in each part respectively.

[0008] The above-mentioned bicycle frame welding pneumatic positioning and clamping tool, the upper and lower fork tube positioning unit comprises a positioning plate, a positioning support, and a mounting stud; the positioning plate is a rectangular plate with a folded edge structure on one side, and a positioning support assembly hole is arranged at each corner position of the positioning plate, the positioning support assembly hole is a long hole, and the positioning support is detachably mounted in the positioning support assembly hole; the upper end surface of the positioning support is provided with a circular-arc type groove matched with the shape of the outer surface of the upper and lower fork tubes of the rear triangular component of the bicycle frame; and the mounting stud is fixedly installed at the folded edge structure of the positioning plate.

[0009] The bicycle frame welding pneumatic positioning and clamping tool, the upper and lower fork pipe pressing unit comprises an upper and lower fork pipe pressing cylinder and an upper and lower fork pipe pressing block; the upper and lower fork pipe pressing cylinder is a rotary cylinder fixedly installed on the positioning plate of the upper and lower fork pipe positioning unit, and the upper and lower fork pipe pressing block is installed on the rotary telescopic arm of the rotary cylinder; the upper and lower fork pipe pressing block is a left-right symmetrical structure and can rotate by 90 degrees and move up and down under the drive of the rotary telescopic arm of the rotary cylinder.

[0010] The bicycle frame welding pneumatic positioning and clamping tool, the ear piece positioning and clamping mechanism is further provided with a T-shaped support, the T-shaped support is inverted, two groups of third horizontal sliding grooves extending in the left-right direction are arranged on the horizontal arm of the T-shaped support, the T-shaped support is assembled with the corresponding assembly holes on the base workbench through the bolt assembly penetrating through the third horizontal sliding grooves, and a group of ear piece positioning and clamping assembly assembly holes arranged in the up-down direction are arranged on the vertical arm of the T-shaped support; the ear piece positioning and clamping assembly comprises an ear piece positioning unit and an ear piece pressing unit, and the ear piece positioning unit is a front-rear symmetrical structure and is provided with the ear piece pressing unit on the front and rear sides.

[0011] The bicycle frame welding pneumatic positioning and clamping tool, the ear piece positioning unit comprises a positioning seat and a positioning pin; the positioning seat is provided with two mounting flanges, second vertical sliding grooves extending in the up-down direction are arranged on the mounting flanges, and the positioning seat is assembled with the corresponding ear piece positioning and clamping assembly assembly holes on the vertical arm of the T-shaped support through the bolt assembly penetrating through the second vertical sliding grooves; the positioning pins are arranged in two groups in a front-rear symmetrical mode and are matched with the ear piece opening slots of the rear triangular part of the bicycle frame.

[0012] The bicycle frame welding pneumatic positioning and clamping tool, the ear piece pressing unit comprises an ear piece pressing cylinder, an ear piece pressing head mounting seat and an ear piece pressing head; the ear piece pressing cylinder is a rotary cylinder fixedly installed on the mounting flange of the ear piece positioning unit, and the ear piece pressing head mounting seat is assembled on the rotary telescopic arm of the rotary cylinder; the ear piece pressing head is fixedly assembled with the ear piece pressing head mounting seat and can rotate by 90 degrees and move forward and backward under the drive of the rotary telescopic arm of the rotary cylinder.

[0013] The bicycle frame welding pneumatic positioning and clamping tool, the front triangular part positioning and clamping mechanism comprises a head pipe positioning and clamping mechanism, a stand pipe and a five-way pipe positioning and clamping mechanism; the head pipe positioning and clamping mechanism, the stand pipe and the five-way pipe positioning and clamping mechanism are all in a cylinder driving mode and adopt the same structure as the corresponding part in the front triangular part welding and clamping positioning tool.

[0014] The utility model provides a bicycle frame welding pneumatic positioning clamping tool, in order to adapt to robot automatic welding process, has added the lower fork pipe auxiliary positioning clamping mechanism on the base, still will be positioned and clamped mechanism in upper and lower fork pipe positioning clamping mechanism design as the rectangular board with the positioning support of four corner positions, realized reliable positioning and clamping effect to the upper fork pipe assembly and lower fork pipe assembly of split structure, the front triangular part positioning clamping mechanism, lower fork pipe auxiliary positioning clamping mechanism, upper and lower fork pipe positioning clamping mechanism and ear piece positioning clamping mechanism of the utility model all adopt cylinder drive mode, not only guarantee the consistency of workpiece clamping force, and promoted the convenience of operation, the utility model passes two rows of assembly holes on the base workstation and cylinder mounting seat in lower fork pipe auxiliary positioning mechanism, L type support in upper and lower fork pipe positioning clamping mechanism, T type support in ear piece positioning clamping mechanism with detachable mode fixed assembly, and is provided with horizontal sliding groove on cylinder mounting seat in lower fork pipe auxiliary positioning mechanism, L type support in upper and lower fork pipe positioning clamping mechanism, T type support in ear piece positioning clamping mechanism, realized the adjustment of left and right positions of lower fork pipe auxiliary positioning mechanism, upper and lower fork pipe positioning clamping mechanism, ear piece positioning clamping mechanism, still can pass the cooperation of first vertical sliding groove of L type support in upper and lower fork pipe positioning clamping mechanism and upper and lower fork pipe positioning clamping assembly, pass the cooperation of a group of ear piece positioning clamping assembly assembly hole and ear piece positioning clamping assembly of vertical arrangement in T type support in ear piece positioning clamping mechanism, realize the adjustment of upper and lower positions of upper and lower fork pipe positioning clamping mechanism, ear piece positioning clamping mechanism, thereby not only greatly improved the stability and reliability of lower fork pipe auxiliary positioning mechanism, upper and lower fork pipe positioning clamping mechanism and ear piece positioning clamping mechanism, more favorably guarantee the welding quality and assembly accuracy of workpiece, and improve the general performance of welding tool. In short, the utility model cooperates base, front triangular part positioning clamping mechanism, upper and lower fork pipe positioning clamping mechanism, lower fork pipe auxiliary positioning clamping mechanism and ear piece positioning clamping mechanism, can match different types of bicycle frame robot automatic welding process, reaches the purpose of improving workpiece welding quality and work efficiency, reducing production cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the bicycle frame structure schematic view;

[0016] Figure 2 is the whole structure schematic view of the utility model;

[0017] Figure 3 is Figure 2 K view of the utility model;

[0018] Figure 4 is the lower fork pipe auxiliary positioning clamping mechanism schematic view;

[0019] Figure 5 is Figure 4 rear side view of the utility model;

[0020] Figure 6 is the schematic diagram of the upper and lower fork tube positioning and clamping mechanism;

[0021] Figure 7 is the K view of Figure 6 ;

[0022] Figure 8 is the schematic diagram of the upper and lower fork tube positioning and clamping assembly structure;

[0023] Figure 9 is the schematic diagram of the ear positioning and clamping mechanism;

[0024] Figure 10 is the schematic diagram of the ear positioning unit structure in the ear positioning and clamping assembly.

[0025] Explanation of each reference numeral in the figure:

[0026] 1 is a bicycle frame

[0027] 1-1 is a front triangle component, 1-1-1 is a head tube, 1-1-2 is an upper tube, 1-1-3 is a stand tube, 1-1-4 is a five-way tube, 1-1-5 is a lower tube, 1-2 is a rear triangle component, 1-2-1 is an upper fork tube assembly, 1-2-2 is a lower fork tube assembly, 1-2-3 is an ear, 1-2-4 is a rear fender upper support, 1-2-4 is a rear fender lower support;

[0028] 2 is a base, 2-1 is a mounting hole;

[0029] 3 is a head tube positioning and clamping mechanism;

[0030] 4 is a stand tube and five-way tube positioning and clamping mechanism;

[0031] 5 is a lower fork tube auxiliary positioning and clamping mechanism, 5-1 is a cylinder mounting seat, 5-1-1 is a first horizontal sliding groove, 5-2 is a finger cylinder, 5-3 is a pneumatic finger;

[0032] 6 is an upper and lower fork tube positioning and clamping mechanism, 6-1 is an L-shaped support, 6-1-1 is a first vertical sliding groove, 6-1-2 is a second horizontal sliding groove, 6-2 is an upper and lower fork tube positioning unit, 6-2-1 is a positioning plate, 6-2-2 is a positioning support mounting hole, 6-2-3 is a positioning support, 6-2-4 is a mounting stud, 6-3 is an upper and lower fork tube pressing unit, 6-3-1 is an upper and lower fork tube pressing cylinder, 6-3-2 is an upper and lower fork tube pressing block;

[0033] 7 is an ear positioning and clamping mechanism, 7-1 is a T-shaped support, 7-1-1 is a third horizontal sliding groove, 7-1-2 is an ear positioning and clamping assembly assembly hole, 7-2 is an ear positioning unit, 7-2-1 is a positioning seat, 7-2-2 is a positioning pin, 7-2-3 is a mounting wing, 7-2-4 is a second vertical sliding groove, 7-3 is an ear pressing unit, 7-3-1 is an ear pressing cylinder, 7-3-2 is an ear pressing head mounting seat, and 7-3-3 is an ear pressing head. DETAILED DESCRIPTION

[0034] The utility model will be further described below in combination with the drawings and specific embodiments.

[0035] Referring to FIG. 1, a common bicycle frame 1 is composed of a front triangular part 1-1 and a rear triangular part 1-2, wherein the front triangular part 1-1 includes a head tube 1-1-1, an upper tube 1-1-2, a lower tube 1-1-3, a stand tube 1-1-4 and a five-way tube 1-1-5, and the rear triangular part 1-2 includes an upper fork tube assembly (provided with two parts arranged symmetrically left and right) 1-2-1, a lower fork tube assembly (provided with two parts arranged symmetrically left and right) 1-2-2, an ear 1-2-3, a rear fender upper support 1-2-4 and a rear fender lower support 1-2-5. Due to the diversity of types and specifications of bicycles, the shapes and sizes of different types of bicycle frames are different, and the welding positions of each component in the front triangular part 1-1 and the rear triangular part 1-2 of the bicycle frame 1 are also different. For example, some mountain bikes and road bikes do not have fender parts, and the rear fender upper support 1-2-4 and the rear fender lower support 1-2-5 in the rear triangular part 1-2 of such a bicycle frame 1 are removed. Therefore, the utility model provides a bicycle frame welding tool equipment which is innovatively designed for robot automatic welding process, and the specific structure will be described in detail below with reference to the accompanying drawings. Figures 2 to 10 The specific structure is described in detail.

[0036] Referring to Figure 2 , Figure 3The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, including base 2, front triangular component positioning clamping mechanism, lower fork pipe auxiliary positioning clamping mechanism 5, upper and lower fork pipe positioning clamping mechanism 6 and ear piece positioning clamping mechanism 7, the base 2 is equipped with the workbench, and the workbench is installed on the horizontal ground through the base support (not shown in the drawing), and is equipped with two rows of assembly holes 2-1 in the left and right directions on the workbench, the front triangular component positioning clamping mechanism, lower fork pipe auxiliary positioning clamping mechanism 5, upper and lower fork pipe positioning clamping mechanism 6 and ear piece positioning clamping mechanism 7 are arranged in proper order from left to right, and are assembled with the assembly hole 2-1 on the workbench of base 2 respectively in detachable mode, the front triangular component positioning clamping mechanism includes head tube positioning clamping mechanism 3, two parts of stand pipe and five -way pipe positioning clamping mechanism 4, the head tube positioning clamping mechanism 3, stand pipe and five -way pipe positioning clamping mechanism 4 are all cylinder drive mode, adopt the same structure with the corresponding part in the same day of the front triangular component welding clamping positioning tool, and the specific structure will not be described in detail here, the utility model is equipped with the pneumatic lower fork pipe auxiliary positioning clamping assembly in lower fork pipe auxiliary positioning clamping mechanism 5, is equipped with the pneumatic upper and lower fork pipe positioning clamping assembly in upper and lower fork pipe positioning clamping mechanism 6, is equipped with the pneumatic ear piece positioning clamping assembly in ear piece positioning clamping mechanism 7.

[0037] Referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, its pneumatic lower fork pipe auxiliary positioning clamping assembly includes cylinder mounting seat 5-1 and the two groups of finger air cylinder 5-2 of front -back symmetry arrangement, the cylinder mounting seat 5-1 is equipped with two groups of first horizontal sliding groove 5-1-1 along the left and right direction extension, and the cylinder mounting seat 5-1 is assembled with the corresponding assembly hole 2-1 on the workbench of base 2 through bolt assembly that passes through first horizontal sliding groove 5-1-1, the finger air cylinder 5-2 is equipped with the pneumatic finger 5-3 that can open and close in front -back direction level, when adopting the robot automatic welding mode to the welding operation of bicycle frame 1, the rear fender upper support 1-2-4 and rear fender lower support 1-2-5 in rear triangular component usually are arranged after the whole frame welding to carry out the welding procedure, under this condition, the left and right two parts of upper fork pipe assembly 1-2-1 and lower fork pipe assembly 1-2-2 in rear triangular component 1-2 are in the split body state, in order to guarantee the reliable positioning of upper fork pipe assembly 1-2-1 and lower fork pipe assembly 1-2-2 left and right two parts, need through pneumatic lower fork pipe auxiliary positioning clamping assembly and upper and lower fork pipe positioning clamping mechanism 6 cooperation realization.

[0038] Referring to Figure 2 、 Figure 3 、 Figure 6 、 Figure 7The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, and the upper and lower fork pipe positioning and clamping mechanism 6 is further equipped with L type support 6-1, the horizontal arm of L type support 6-1 is equipped with two groups of second horizontal sliding slot 6-1-2 extending along the left and right direction, and L type support 6-1 is assembled with the corresponding assembly hole 2-1 on the workbench of base 2 through bolt assembly passing through second horizontal sliding slot 6-1-2, and the vertical arm of L type support 6-1 is equipped with first vertical sliding slot 6-1-1 extending along the up and down direction, and the upper and lower fork pipe positioning and clamping assembly is assembled with first vertical sliding slot 6-1-1, the upper and lower fork pipe positioning and clamping assembly includes two parts arranged in the upper and lower direction, and the upper and lower fork pipe positioning unit 6-2 and the upper and lower fork pipe pressing unit 6-3 are arranged in each part respectively.

[0039] Referring to Figure 6 、 Figure 7 、 Figure 8 The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, and the upper and lower fork pipe positioning and clamping mechanism 6 is further equipped with L type support 6-1, the horizontal arm of L type support 6-1 is equipped with two groups of second horizontal sliding slot 6-1-2 extending along the left and right direction, and L type support 6-1 is assembled with the corresponding assembly hole 2-1 on the workbench of base 2 through bolt assembly passing through second horizontal sliding slot 6-1-2, and the vertical arm of L type support 6-1 is equipped with first vertical sliding slot 6-1-1 extending along the up and down direction, and the upper and lower fork pipe positioning and clamping assembly is assembled with first vertical sliding slot 6-1-1, the upper and lower fork pipe positioning and clamping assembly includes two parts arranged in the upper and lower direction, and the upper and lower fork pipe positioning unit 6-2 and the upper and lower fork pipe pressing unit 6-3 are arranged in each part respectively.

[0040] Referring to Figure 2 、 Figure 3 、 Figure 9 、 Figure 10The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, and the ear piece positioning clamping mechanism 7 is equipped with T type support 7-1, T type support 7-1 is inverted, is equipped with two groups third horizontal sliding slot 7-1-1 extending along left and right direction on its horizontal arm, and T type support 7-1 is assembled with the corresponding assembly hole 2-1 on the workbench 2 base through bolt assembly passing through third horizontal sliding slot 7-1-1, is equipped with a group ear piece positioning clamping assembly assembly hole 7-1-2 along the up and down direction on the vertical arm of T type support 7-1, the ear piece positioning clamping assembly includes ear piece positioning unit 7-2 and ear piece compression unit 7-3, and ear piece positioning unit 7-2 is the front and back symmetry structure, and is equipped with ear piece compression unit 7-3 on its front and back two sides.

[0041] Referring to 9、 Figure 10 The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, and the ear piece positioning clamping mechanism 7 is equipped with T type support 7-1, T type support 7-1 is inverted, is equipped with two groups third horizontal sliding slot 7-1-1 extending along left and right direction on its horizontal arm, and T type support 7-1 is assembled with the corresponding assembly hole 2-1 on the workbench 2 base through bolt assembly passing through third horizontal sliding slot 7-1-1, is equipped with a group ear piece positioning clamping assembly assembly hole 7-1-2 along the up and down direction on the vertical arm of T type support 7-1, the ear piece positioning clamping assembly includes ear piece positioning unit 7-2 and ear piece compression unit 7-3, and ear piece positioning unit 7-2 is the front and back symmetry structure, and is equipped with ear piece compression unit 7-3 on its front and back two sides. The utility model discloses a bicycle frame welding pneumatic positioning clamping tool, and the ear piece positioning clamping mechanism 7 is equipped with T type support 7-1, T type support 7-1 is inverted, is equipped with two groups third horizontal sliding slot 7-1-1 extending along left and right direction on its horizontal arm, and T type support 7-1 is assembled with the corresponding assembly hole 2-1 on the workbench 2 base through bolt assembly passing through third horizontal sliding slot 7-1-1, is equipped with a group ear piece positioning clamping assembly assembly hole 7-1-2 along the up and down direction on the vertical arm of T type support 7-1, the ear piece positioning clamping assembly includes ear piece positioning unit 7-2 and ear piece compression unit 7-3, and ear piece positioning unit 7-2 is the front and back symmetry structure, and is equipped with ear piece compression unit 7-3 on its front and back two sides.

[0042] Referring to Figures 1 to 10When the front triangular part welding operation of the bicycle frame is carried out by the utility model, first, the position and space posture of the front triangular part positioning and clamping mechanism, the lower fork pipe auxiliary positioning and clamping mechanism 5, the upper and lower fork pipe positioning and clamping mechanism 6 and the lug positioning and clamping mechanism 7 are adjusted according to the structure size of the batch of bicycle frames 1; then the upper fork pipe assembly 1-2-1 and the lower fork pipe assembly 1-2-2 in the front triangular part 1-1 and the lower triangular part 1-2 are respectively positioned by the head pipe positioning and clamping mechanism 3, the lower fork pipe auxiliary positioning and clamping mechanism 5, the upper and lower fork pipe positioning and clamping mechanism 6 and the lug positioning and clamping mechanism 7; the size of the combined parts to be welded is checked to match the size of the workpiece after welding; the cylinders of the head pipe positioning and clamping mechanism 3, the vertical pipe and five-way pipe positioning and clamping mechanism 4, the lower fork pipe auxiliary positioning and clamping mechanism 5, the upper and lower fork pipe positioning and clamping mechanism 6 and the lug positioning and clamping mechanism 7 are controlled by the cylinder action control system to clamp and fix the parts to be welded; after the above operation is completed, the workpiece is welded by the welding robot equipment.

Claims

1. A self-propelled positioning and clamping tool for welding a bicycle frame, characterized in that: The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 2. The self-contained, pneumatically-actuated positioning and clamping fixture for welding bicycle frames according to claim 1, wherein: The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 3. The self-locating, clamping fixture for welding bicycle frames, according to claim 2, wherein: The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 4. The self-locating, clamping fixture for welding bicycle frames, according to claim 3, wherein: The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and clamping mechanism, lower fork pipe auxiliary positioning and clamping mechanism (5), upper and lower fork pipe positioning and clamping mechanism (6) and ear piece positioning and clamping mechanism (7), the base (2) is equipped with workbench, is installed on horizontal ground, is equipped with two rows of assembly hole (2 The utility model relates to a bicycle frame positioning and clamping device, including base (2), front triangular part positioning and 5. The self-locating, clamping fixture for welding bicycle frames, according to claim 4, wherein: The upper and lower fork pressing unit (6-3) comprises an upper and lower fork pressing cylinder (6-3-1) and an upper and lower fork pressing block (6-3-2); the upper and lower fork pressing cylinder (6-3-1) is a rotary cylinder, fixedly installed on the positioning plate (6-2-1) of the upper and lower fork positioning unit (6-2), and the upper and lower fork pressing block (6-3-2) is installed on the rotary telescopic arm of the rotary cylinder; the upper and lower fork pressing block (6-3-2) is a left-right symmetrical structure, and realizes 90-degree rotation and up-down movement under the driving of the rotary telescopic arm of the rotary cylinder.

6. A self-locating clamping fixture for welding bicycle frames as claimed in claim 3 or 4 or 5 wherein: The ear piece positioning and clamping mechanism (7) is also provided with a T-shaped support (7-1), the T-shaped support (7-1) is inverted, two groups of third horizontal sliding grooves (7-1-1) extending in the left-right direction are arranged on the horizontal arm of the T-shaped support (7-1), the T-shaped support (7-1) is assembled with the corresponding assembly hole (2-1) on the workbench of the base (2) through the bolt assembly penetrating through the third horizontal sliding groove (7-1-1), and a group of ear piece positioning and clamping assembly assembly holes (7-1-2) arranged in the up-down direction are arranged on the vertical arm of the T-shaped support (7-1); the ear piece positioning and clamping assembly comprises an ear piece positioning unit (7-2) and an ear piece pressing unit (7-3), the ear piece positioning unit (7-2) is a front-rear symmetrical structure, and the ear piece pressing unit (7-3) is assembled on the front and rear sides of the ear piece positioning unit (7-2).

7. The self-contained, pneumatically-actuated positioning and clamping fixture for welding bicycle frames according to claim 6, wherein: The ear piece positioning unit (7-2) comprises a positioning seat (7-2-1) and a positioning pin (7-2-2); the positioning seat (7-2-1) is provided with two mounting flaps (7-2-3), a second vertical sliding groove (7-2-4) extending in the up-down direction is arranged on the mounting flap (7-2-3), and the positioning seat (7-2-1) is assembled with the corresponding ear piece positioning and clamping assembly assembly hole (7-1-2) on the vertical arm of the T-shaped support (7-1) through the bolt assembly penetrating through the second vertical sliding groove (7-2-4); the positioning pin (7-2-2) is arranged in two groups in front and back symmetry, and matched with the notch groove on the ear piece (1-2-3) of the rear triangular part (1-2) of the bicycle frame (1).

8. The self-contained, pneumatically-actuated positioning and clamping fixture for welding bicycle frames according to claim 7, wherein: The ear piece pressing unit (7-3) comprises an ear piece pressing cylinder (7-3-1), an ear piece pressing head mounting seat (7-3-2) and an ear piece pressing head (7-3-3); the ear piece pressing cylinder (7-3-1) is a rotary cylinder, fixedly installed on the mounting flap (7-2-3) of the ear piece positioning unit (7-2), and the ear piece pressing head mounting seat (7-3-2) is assembled on the rotary telescopic arm of the rotary cylinder; the ear piece pressing head (7-3-3) is fixedly assembled with the ear piece pressing head mounting seat (7-3-2), and realizes 90-degree rotation and front-rear movement under the driving of the rotary telescopic arm of the rotary cylinder.

9. A self-locating, clamping fixture for welding bicycle frames according to any one of claims 1 to 5, characterized in that: The front triangular part positioning and clamping mechanism comprises a head tube positioning and clamping mechanism (3) and a vertical tube and five-way tube positioning and clamping mechanism (4); the head tube positioning and clamping mechanism (3) and the vertical tube and five-way tube positioning and clamping mechanism (4) are both in a cylinder driving mode, and adopt the same structure as the corresponding part in the front triangular part welding clamping positioning tool.

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