Universal bicycle frame welding, positioning and clamping tool

Abstract

A universal bicycle frame welding, positioning and clamping tool comprises a base assembly, a head pipe positioning and supporting mechanism, a vertical pipe and five-way pipe positioning and clamping mechanism, an upper and lower fork pipe positioning and clamping mechanism and a lug positioning and clamping mechanism. The base assembly is installed on the horizontal ground, a working table capable of being turned over spatially is arranged on the base assembly, and a plurality of assembling long holes are formed in the working table. The head pipe positioning and supporting mechanism, the vertical pipe and five-way pipe 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 are respectively assembled with corresponding assembling long holes in the working table of the base assembly; and slide rail and slide seat matching structures are arranged in the head pipe positioning and supporting mechanism, the vertical pipe and five-way pipe positioning and clamping mechanism, the upper and lower fork pipe positioning and clamping mechanism and the lug positioning and clamping mechanism. The welding tool can be matched with welding operation of bicycle frames of different types and sizes, the universality, the working efficiency and the product quality of the welding tool are improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle production equipment, in particular to a universal bicycle frame welding positioning clamping tool used for bicycle frame welding. Background Art

[0002] As attached Figure 1 As shown, the bicycle frame 1 is generally composed of a front triangle component 1-1 and a rear triangle component, wherein the front triangle component 1-1 includes a head tube 1-1-1, an upper tube 1-1-2, a lower tube 1-1-4, a seat tube 1-1-3 and a bottom bracket 1-1-5, and the rear triangle component is provided with two parts arranged symmetrically on the left and right, each of which includes an upper fork tube 1-4, a lower fork tube 1-2 and a lug 1-3. When a robot is used for welding of a bicycle frame, generally, the welding of the front triangle component 1-1 is completed first, and the welding of the lower fork tube 1-2 and the lug 1-3 in the rear triangle component is completed, and then the front triangle component 1-1 and the rear triangle component are assembled and welded into one.

[0003] Due to the diversity of bicycle models and specifications, different workpiece positioning fixtures are required for welding operations of bicycle frames of different types and sizes. This brings about the problem of a large number of fixtures. Especially for companies with an order-based production model, as customer demand continues to change, the elimination rate of welding fixtures increases, resulting in increased production costs. Summary of the invention

[0004] The present invention provides a universal bicycle frame welding positioning and clamping tool, which aims to adjust the positioning and clamping position of a workpiece through the matching structure of a slide rail and a sliding seat, so as to match the welding operations of bicycle frames of different types and sizes, thereby achieving the purpose of improving the universal performance of the welding tool and product quality and reducing production costs.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: A universal bicycle frame welding positioning and clamping tool comprises a base assembly, a head tube positioning and supporting mechanism, a seat tube and bottom tube positioning and clamping mechanism, an upper and lower fork tube positioning and clamping mechanism, and an ear piece positioning and clamping mechanism; the base assembly is installed on a horizontal ground, a workbench that can be flipped in space is arranged on the base assembly, and the workbench is provided with a plurality of groups of assembly long holes along the left and right directions; the head tube positioning and supporting mechanism, the seat tube and bottom tube 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 matched with the assembly long holes at corresponding positions on the base assembly workbench; a slide rail and a sliding seat matching structure are provided in the head tube positioning and supporting mechanism, the seat tube and bottom tube positioning and clamping mechanism, the upper and lower fork tube positioning and clamping mechanism, and the ear piece positioning and clamping mechanism.

[0006] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the base assembly is also provided with a flip motor, a motor fixing seat and a flip bracket; the motor fixing seat and the flip bracket are both fixedly installed on the horizontal ground; the flip motor is installed on the motor fixing seat, and its output shaft is fixedly connected to one end of the workbench; the other end of the workbench is hingedly assembled with the flip bracket.

[0007] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the head tube positioning support mechanism is provided with a first T-shaped support, a first slide rail, a first vertical sliding seat and a head tube positioning support; the first T-shaped support is inverted, and the first slide rail is installed on its vertical arm; the first vertical sliding seat is equipped on the first slide rail; the first vertical sliding seat is fixed to the appropriate position of the first slide rail by locking with a top screw, and a head tube positioning support that cooperates with the head tube in the front triangle component of the bicycle frame is installed on the first vertical sliding seat.

[0008] The above-mentioned universal bicycle frame welding positioning and clamping tool, the seat tube and bottom tube positioning and clamping mechanism includes an L-shaped support, a second slide rail, a second vertical sliding seat, a seat tube pressure head assembly, a seat tube positioning support plate, a bottom tube positioning seat and a bottom tube clamping assembly; the horizontal arm of the L-shaped support is assembled with a long hole at a corresponding position on the workbench, and a group of assembly holes is provided on the front facade of the vertical arm of the L-shaped support; the second slide rail is installed on the rear facade of the vertical arm of the L-shaped support; the second vertical sliding seat is assembled with the second slide rail and fixed to the appropriate position of the second slide rail by a top screw locking; the seat tube pressure head assembly is installed on the second vertical sliding seat; the seat tube positioning support plate is assembled with the assembly holes at corresponding positions on the front facade of the vertical arm of the L-shaped support; the bottom tube positioning seat and the bottom tube clamping assembly are installed on the horizontal arm of the L-shaped support.

[0009] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the upper and lower fork tube positioning and clamping mechanisms are provided with a U-shaped support, an upper fork tube positioning and clamping assembly, and a lower fork tube positioning and clamping assembly; the front and rear vertical arms of the U-shaped support are non-equal height structures, the rear vertical arm is higher than the front vertical arm, a third slide rail is provided on the outer side of the rear vertical arm, and a fourth slide rail is provided on the inner side of the two vertical arms; the upper fork tube positioning and clamping assembly is matched with the third slide rail through a third vertical sliding seat, and the third vertical sliding seat is fixed to the appropriate position of the third slide rail by a top screw locking; the lower fork tube positioning and clamping assembly includes a lower fork tube positioning unit and a lower fork tube clamping unit, the lower fork tube clamping unit is matched with the fourth slide rail through a fourth vertical sliding seat, and the fourth vertical sliding seat is fixed to the appropriate position of the fourth slide rail by a top screw locking, and the lower fork tube positioning unit is installed at the bottom of the U-shaped support.

[0010] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the ear piece positioning and clamping mechanism includes a second T-shaped support, an ear piece positioning assembly and an ear piece clamping assembly; the second T-shaped support is inverted, and a fifth slide rail is arranged on its vertical arm; the ear piece positioning assembly is assembled with the fifth slide rail through the fifth vertical sliding seat, and the fifth vertical sliding seat is fixed to the appropriate position of the fifth slide rail by locking with a top screw; the ear piece clamping assembly is assembled with the fifth slide rail through the sixth vertical sliding seat, and the sixth vertical sliding seat is fixed to the appropriate position of the fifth slide rail by locking with a top screw, and the sixth vertical sliding seat is located below the fifth vertical sliding seat.

[0011] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the ear piece positioning assembly includes a positioning pin, a positioning pin seat, a horizontal moving seat, a horizontal moving track and a horizontal moving track support; the positioning pins are symmetrically arranged in two groups, which are respectively installed on the front and rear ends of the horizontal moving seat through the positioning pin seat, and the positioning pins match the notched grooves on the ear piece of the rear triangle component of the bicycle frame; the horizontal moving seat is equipped with the horizontal moving track, and the horizontal moving track is fixedly assembled with the sixth vertical sliding seat through the horizontal moving track support.

[0012] The above-mentioned universal bicycle frame welding positioning clamping tooling is provided with a limiting element in the ear positioning assembly, and the limiting element includes a limiting baffle and a limiting groove; the limiting baffle is arranged at both ends of the bottom surface of the horizontal moving seat, and the limiting groove is arranged in the guide groove of the horizontal moving track, and the limiting baffle is inserted into the corresponding limiting groove, and the cooperation of the two limits the movable range of the horizontal moving seat.

[0013] The above-mentioned universal bicycle frame welding positioning and clamping tooling, the ear clamping assembly includes a double-acting cylinder, an ear top screw and a top screw assembly seat, the double-acting cylinder is fixed on the sixth vertical sliding seat, and its two end piston rods extend in the front-to-back direction and are in a front-to-back symmetrical state, the top screw assembly seat is installed on the outer end of the piston rod of the double-acting cylinder, and a long hole is provided on the top screw assembly seat to realize the left and right position adjustment of the ear top screw.

[0014] The universal bicycle frame welding positioning and clamping tooling, the stand tube pressure head assembly and the bottom tube clamping assembly in the stand tube and bottom tube positioning and clamping mechanism, the upper fork tube positioning and clamping assembly and the lower fork tube positioning and clamping assembly in the upper and lower fork tube positioning and clamping mechanism all adopt a cylinder drive structure.

[0015] The present invention provides a universal bicycle frame welding positioning and clamping tool. In order to adapt to the welding operation of bicycle frames of different specifications and sizes, it is provided with a slide rail and a sliding seat matching structure in the head tube positioning support mechanism, the vertical tube and the bottom tube positioning and clamping mechanism, the upper and lower fork tube positioning and clamping mechanism, and the ear piece positioning and clamping mechanism, which is more convenient for adjusting the position of the workpiece clamping point; the present invention also provides a workbench that can be flipped in space on the base assembly, which can better cooperate with the robot automated welding operation; the ear piece clamping assembly in the ear piece positioning and clamping mechanism of the present invention adopts a double-acting cylinder driving mode, which can realize the reliable positioning of the rear triangle component of the bicycle frame through the automatic centering function of the double-acting cylinder and the action of the horizontal moving seat in the ear piece positioning pin unit, and ensure the left-right symmetrical structure of the rear triangle component of the bicycle frame. In short, the present invention can match the welding operation of bicycle frames of different types and sizes, and achieves the purpose of improving the universal performance and work efficiency of welding tooling, ensuring the quality of welding products, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a bicycle frame involved in the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 yes Figure 2 K-direction view; Figure 4 1. It is a schematic diagram of the base assembly structure; Figure 5 This is a schematic diagram of the positioning and clamping mechanism of the seat tube and the bottom bracket tube; Figure 6 It is a schematic diagram of the upper and lower fork tube positioning and clamping mechanism; Figure 7 1. It is a schematic diagram of the positioning and clamping mechanism of the ear piece; Figure 8 It is a schematic diagram of the structure of the ear piece clamping assembly in the ear piece positioning clamping mechanism and its assembly with the second T-shaped support; Fig. 9 It is a schematic diagram of the structure of the ear piece positioning component in the ear piece positioning clamping mechanism and its assembly with the second T-shaped support; Fig.10 It is a schematic diagram of the structure of the horizontal moving seat in the ear piece positioning assembly; Fig.11 yes Fig.10 Schematic diagram of the middle horizontal moving seat after the space is turned 180 degrees; Fig.12 It is a schematic diagram of the horizontal moving track structure in the ear piece positioning assembly; Fig.13 The present invention is a schematic diagram of positioning and clamping a bicycle frame workpiece to be welded.

[0017] Explanation of the symbols in the figure: 1 for bicycle rack 1-1 is the front triangle, 1-1-1 is the head tube, 1-1-2 is the top tube, 1-1-3 is the seat tube, 1-1-4 is the down tube, and 1-1-5 is the bottom bracket tube. 1-2 is the lower fork tube; 1-3 is the ear piece, 1-3-1 is the notch groove; 1-4 is the upper fork tube; 2 is the bicycle frame welding positioning clamping tool 2-1 is the base assembly, 2-1-1 is the flip motor, 2-1-2 is the workbench, 2-1-2-1 is the assembly slot, 2-1-3 is the flip bracket, and 2-1-4 is the motor fixing seat; 2-2 is a head tube positioning support mechanism, 2-2-1 is a first slide rail, 2-2-2 is a first vertical sliding seat, 2-2-3 is a head tube positioning support, and 2-2-4 is a first T-shaped support; 2-3 is the seat tube and bottom tube positioning clamping mechanism, 2-3-1 is the L-shaped support, 2-3-2 is the second slide rail, 2-3-3 is the second vertical sliding seat, 2-3-4 is the seat tube pressure head assembly, 2-3-5 is the seat tube positioning support plate, 2-3-6 is the bottom tube positioning seat, and 2-3-7 is the bottom tube clamping assembly; 2-4 is the upper and lower fork tube positioning and clamping mechanism, 2-4-1 is the U-shaped support, 2-4-2 is the upper fork tube positioning and clamping assembly, 2-4-3 is the lower fork tube positioning and clamping assembly, 2-4-3-1 is the lower fork tube positioning unit, 2-4-3-2 is the lower fork tube clamping unit, 2-4-4 is the third slide rail, 2-4-5 is the fourth slide rail, 2-4-6 is the third vertical sliding seat, and 2-4-7 is the fourth vertical sliding seat; 2-5 is an ear positioning and clamping mechanism, 2-5-1 is an ear clamping assembly, 2-5-1-1 is a double-acting cylinder, 2-5-1-2 is a top screw assembly seat, 2-5-1-3 is an ear top screw, 2-5-1-4 is a long hole that can realize the left and right position adjustment of the ear top screw, 2-5-2 is an ear positioning assembly, 2-5-2-1 is a positioning pin, 2-5-2-2 is a positioning pin seat, 2-5-2-3 is a horizontal moving seat, 2-5-2-4 is a horizontal moving track, 2-5-2-5 is a horizontal moving track support, 2-5-3 is the second T-type support, 2-5-4 is the fifth slide rail, 2-5-5 is the fifth vertical sliding seat, and 2-5-6 is the sixth vertical sliding seat. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Referring to FIG. 1 , a bicycle frame 1 is composed of a front triangle component 1-1 and a rear triangle component, wherein the front triangle component 1-1 includes a head tube 1-1-1, an upper tube 1-1-2, a lower tube 1-1-4, a seat tube 1-1-3 and a bottom bracket 1-1-5, and the rear triangle component is provided with two parts arranged symmetrically on the left and right, each of which includes an upper fork tube 1-4, a lower fork tube 1-2 and an ear piece 1-3. When a robot is used to weld a bicycle frame, generally, the welding of the front triangle component 1-1, the welding of the lower fork tube 1-2 and the ear piece 1-3 are completed first, and then the front triangle component 1-1 and the rear triangle component are welded together. Due to the diversity of bicycle types and specifications, different types of bicycle frames have different shapes and sizes. Different workpiece positioning fixtures need to be configured for welding operations of bicycle frames of different types and sizes, which brings about the problem of a large number of fixtures. In order to solve the above problems, the present invention provides a universal bicycle frame welding positioning clamping fixture, which is described below with reference to the attached drawings. Figures 2 to 13 Its specific structure is described in detail.

[0020] See also Figure 2 , Figure 3 The universal bicycle frame welding positioning and clamping tooling of the present invention comprises a base assembly 2-1, a head tube positioning and supporting mechanism 2-2, a seat tube and bottom tube positioning and clamping mechanism 2-3, an upper and lower fork tube positioning and clamping mechanism 2-4, and an ear piece positioning and clamping mechanism 2-5; the base assembly 2-1 is installed on a horizontal ground, and a workbench 2-1-2 that can be flipped in space is arranged on the base assembly 2-1; the head tube positioning and supporting mechanism 2-2, the seat tube and bottom tube positioning and clamping mechanism 2-3, the upper and lower fork tube positioning and clamping mechanism 2-4, and the ear piece positioning and clamping mechanism 2-5 are installed on the workbench of the base assembly 2-1, and are arranged in sequence from left to right; in order to improve the universal performance of the bicycle frame welding positioning and clamping tooling, a slide rail and a sliding seat matching structure are provided in the head tube positioning and supporting mechanism 2-2, the seat tube and bottom tube positioning and clamping mechanism 2-3, the upper and lower fork tube positioning and clamping mechanism 2-4, and the ear piece positioning and clamping mechanism 2-5, so as to realize the adjustment of the positioning and clamping point position of bicycle frames of different models and sizes.

[0021] See also Figure 2 , Figure 3 , Figure 4The universal bicycle frame welding positioning and clamping tooling described in the present invention has a base assembly 2-1 that is also provided with a flip motor 2-1-1, a motor fixing seat 2-1-4 and a flip bracket 2-1-3; the motor fixing seat 2-1-4 and the flip bracket 2-1-3 are both fixedly installed on a horizontal ground; the flip motor 2-1-1 is installed on the motor fixing seat 2-1-4, and its output shaft is fixedly connected to one end of the workbench 2-1-2; the workbench 2-1-2 is provided with a plurality of groups of assembly long holes 2-1-2-1 along the left and right directions, and the head tube positioning support mechanism 2-2, the seat tube and bottom tube positioning clamping mechanism 2-3, the upper and lower fork tube positioning clamping mechanism 2-4, and the ear piece positioning clamping mechanism 2-5 are respectively assembled with the assembly long holes 2-1-2-1 at corresponding positions on the workbench 2-1-2, and the other end of the workbench 2-1-2 is hingedly assembled with the flip bracket 2-1-3.

[0022] See also Figure 2 , Figure 3 The universal bicycle frame welding positioning and clamping tooling described in the present invention is provided with a first T-shaped support 2-2-4, a first slide rail 2-2-1, a first vertical sliding seat 2-2-2 and a head pipe positioning support 2-2-3 in its head pipe positioning support mechanism 2-2; the first T-shaped support 2-2-4 is inverted, and its horizontal bottom surface is fixed by an assembly long hole 2-1-2-1 at a corresponding position on the workbench 2-1-2, and the first slide rail 2-2-1 is installed on its vertical arm, and the first vertical sliding seat 2-2-2 is equipped on the first slide rail 2-2-1, and a head pipe positioning support 2-2-3 that cooperates with the head pipe in the front triangle component of the bicycle frame is installed on the first vertical sliding seat 2-2-2, and the first vertical sliding seat 2-2-2 can move up and down along the first slide rail 2-2-1, and when the first vertical sliding seat 2-2-2 moves to an appropriate position, it is locked and fixed on the first slide rail by a top screw.

[0023] See also Figure 2 , Figure 3 , Figure 5The universal bicycle frame welding positioning clamping tool of the present invention has a vertical tube and a bottom tube positioning clamping mechanism 2-3, which includes an L-shaped support 2-3-1, a second slide rail 2-3-2, a second vertical sliding seat 2-3-3, a vertical tube pressure head assembly 2-3-4, a vertical tube positioning support plate 2-3-5, a bottom tube positioning seat 2-3-6 and a bottom tube clamping assembly 2-3-7; the horizontal arm of the L-shaped support 2-3-1 is installed at the corresponding position on the workbench 2-1-2 The second vertical sliding seat 2-3-3 is equipped with the second sliding rail 2-3-2, and the second vertical sliding seat 2-3-3 can slide up and down along the second sliding rail 2-3-2 to adjust its up and down position to match bicycle frame workpieces of different specifications and sizes. When adjusted to the proper position, it is fixed on the second slide rail 2-3-2 by means of a top screw lock; the riser pressure head assembly 2-3-4 is installed on the second vertical sliding seat 2-3-3. In order to match the robot welding process and improve work efficiency, the riser pressure head assembly 2-3-4 can be driven up and down by a cylinder; the riser positioning support plate 2-3-5 is matched with the assembly holes at the corresponding positions on the front elevation of the vertical arm of the L-shaped support 2-3-1; the five-way pipe positioning seat 2-3-6 The bottom tube clamping assembly 2-3-7 is installed on the horizontal arm of the L-shaped support 2-3-1, and a positioning groove matching the outer surface of the bottom tube 1-1-5 of the bicycle frame 1 is set on the bottom tube positioning seat 2-3-6. The bottom tube clamping assembly 2-3-7 includes two groups of pressure heads arranged front and back, one group of pressure heads is fixed on the vertical arm of the L-shaped support 2-3-1, and the other group of pressure heads is driven by a cylinder. The front and rear ends of the bottom tube are clamped and fixed with the cooperation of the two groups of pressure heads.

[0024] See also Figure 2 , Figure 3 , Figure 6The universal bicycle frame welding positioning and clamping tooling of the present invention comprises an upper and lower fork tube positioning and clamping mechanism 2-4, which is provided with a U-shaped support 2-4-1, an upper fork tube positioning and clamping assembly 2-4-2, and a lower fork tube positioning and clamping assembly 2-4-3; the front and rear vertical arms of the U-shaped support 2-4-1 are non-equal height structures, the rear vertical arm is higher than the front vertical arm, a third slide rail 2-4-4 is provided on the outer side of the rear vertical arm, and a fourth slide rail 2-4 is provided on the inner side of the two vertical arms. -5; the upper fork tube positioning clamping assembly 2-4-2 is assembled with the third slide rail 2-4-4 through the third vertical sliding seat 2-4-6, and the third vertical sliding seat 2-4-6 can slide up and down along the third slide rail 2-4-4. When the third vertical sliding seat 2-4-6 is adjusted to an appropriate position, it can be locked and fixed on the third slide rail 2-4-4 by a top screw, and then assembled with the upper fork tube positioning clamping assembly 2-4-2 and the third vertical sliding seat 2-4-6. The upper fork tube 1-4 is clamped and fixed by the upper fork tube positioning and clamping assembly 2-4-2. The lower fork tube positioning and clamping assembly 2-4-3 includes a lower fork tube positioning unit 2-4-3-1 and a lower fork tube clamping unit 2-4-3-2. The lower fork tube clamping unit 2-4-3-2 is assembled with the fourth slide rail 2-4-5 through a fourth vertical sliding seat 2-4-7. The fourth vertical sliding seat 2-4-7 can be moved along the fourth The four slide rails 2-4-5 slide up and down. When the fourth vertical slide seat 2-4-7 is adjusted to an appropriate position, it can be locked and fixed on the fourth slide rail 2-4-5 by a top screw. Then the lower fork tube positioning unit 2-4-3-1 positions the left and right lower fork tubes 1-2, and then the lower fork tube clamping unit 2-4-3-2 clamps and fixes the left and right lower fork tubes 1-2. The lower fork tube positioning unit 2-4-3-1 is installed at the bottom of the U-shaped support 2-4-1. In order to adapt to the robot welding process and improve work efficiency, the upper fork tube positioning clamping assembly 2-4-2 and the lower fork tube positioning clamping assembly 2-4-3 are both cylinder driven.

[0025] See also Figure 2 , Figure 3 , Figure 7The universal bicycle frame welding positioning and clamping tooling of the present invention has an ear piece positioning and clamping mechanism 2-5 comprising a second T-shaped support 2-5-3, an ear piece positioning assembly 2-5-2 and an ear piece clamping assembly 2-5-1; the second T-shaped support 2-5-3 is inverted, and a fifth slide rail 2-5-4 is arranged on its vertical arm; the ear piece positioning assembly 2-5-2 is assembled with the fifth slide rail 2-5-4 through a fifth vertical sliding seat 2-5-5, and the fifth vertical sliding seat 2-5-5 can slide up and down along the fifth slide rail 2-5-4. When the fifth vertical slide When the movable seat 2-5-5 is adjusted to an appropriate position, it can be locked and fixed on the fifth slide rail 2-5-4 by a top screw; the ear clamping assembly 2-5-1 is assembled with the fifth slide rail 2-5-4 through the sixth vertical sliding seat 2-5-6, and the sixth vertical sliding seat 2-5-6 can slide up and down along the fifth slide rail 2-5-4. When the sixth vertical sliding seat 2-5-6 is adjusted to an appropriate position, it can be locked and fixed on the fifth slide rail 2-5-4 by a top screw. The sixth vertical sliding seat 2-5-6 is located below the fifth vertical sliding seat 2-5-5.

[0026] See also Figure 2 , Figure 3 , Figure 8 The universal bicycle frame welding positioning and clamping tooling described in the present invention, its ear clamping assembly 2-5-1 includes a double-acting cylinder 2-5-1-1, an ear top screw 2-5-1-3 and a top screw assembly seat 2-5-1-2, the double-acting cylinder 2-5-1-1 is fixed on the sixth vertical sliding seat 2-5-6, and its piston rods at both ends extend in the front-to-back direction and are in a front-to-back symmetrical state, the top screw assembly seat 2-5-1-2 is installed on the outer end of the piston rod of the double-acting cylinder 2-5-1-1, and a long hole 2-5-1-4 is provided on the top screw assembly seat 2-5-1-2 to realize the left and right position adjustment of the ear top screw.

[0027] See also Figure 2 , Figure 3 , Fig. 9 The universal bicycle frame welding positioning and clamping tooling described in the present invention, its ear piece positioning assembly 2-5-2 includes a positioning pin 2-5-2-1, a positioning pin seat 2-5-2-2, a horizontal moving seat 2-5-2-3, a horizontal moving track 2-5-2-4 and a horizontal moving track support 2-5-2-5; the positioning pins 2-5-2-1 are symmetrically arranged in two groups, which are respectively installed on the front and rear ends of the horizontal moving seat 2-5-2-3 through the positioning pin seats 2-5-2-2, and the positioning pins 2-5-2-1 match the notch groove 1-3-1 on the ear piece of the rear triangle component of the bicycle frame; the horizontal moving seat 2-5-2-3 is equipped with the horizontal moving track 2-5-2-4, and the horizontal moving track 2-5-2-4 is fixedly assembled with the sixth vertical sliding seat 2-5-6 through the horizontal moving track support 2-5-2-5.

[0028] See also Figure 2 , Figure 3 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 The universal bicycle frame welding positioning clamping tooling described in the present invention is provided with a limiting element in its ear positioning assembly 2-5-2, and the limiting element includes a limiting baffle a, a limiting baffle b and a limiting groove c; the limiting baffle a and the limiting baffle b are arranged at both ends of the bottom surface of the horizontal moving seat 2-5-2-3, and the limiting groove c is arranged in two groups of guide grooves of the horizontal moving track 2-5-2-4, and the limiting baffle a and the limiting baffle b are respectively inserted into the corresponding limiting groove c, and the movable range of the horizontal moving seat 2-5-2-3 is limited by the limiting baffle a, the limiting baffle b and the limiting groove c.

[0029] See also Figures 1 to 13 When the bicycle frame welding operation is performed by adopting the present invention, firstly, the spatial posture of the base assembly 2-1 is adjusted according to the structural dimensions of the bicycle frame 1 of the batch, so that the workbench 2-1-2 is in a horizontal state, and then the positions of the head tube positioning support mechanism 2-2, the seat tube and the bottom tube positioning clamping mechanism 2-3 are adjusted, and the front triangle component 1-1 is positioned and clamped; the upper fork tube 1-4 and the lower fork tube 1-2 in the rear triangle component are positioned by the positioning components in the upper and lower fork tube positioning clamping mechanisms 2-4 and the ear piece positioning clamping mechanism 2-5 respectively to position each part to be welded; review The size of each part to be welded after assembly is matched with that of the standard sample of the bicycle frame; the cylinder motion control system is used to operate the cylinders of the upper and lower fork tube positioning clamping mechanism 2-4 and the ear piece positioning clamping mechanism 2-5 to clamp and fix each part to be welded; after completing the above operations, the workpiece is welded by the welding robot equipment. During this process, for different welding points, the worktable 2-1-2 in the base assembly 2-1 can be flipped in space to adjust the posture of the workpiece to match the robot action and ensure smooth welding process.

Claims

1. A universal bicycle frame welding positioning clamping tool, characterized by: The bicycle frame welding positioning clamping tool (2) comprises a base assembly (2-1), a head pipe positioning support mechanism (2-2), a seat tube and bottom tube positioning clamping mechanism (2-3), an upper and lower fork tube positioning clamping mechanism (2-4), and an ear piece positioning clamping mechanism (2-5); the base assembly (2-1) is installed on a horizontal ground, a spatially reversible workbench (2-1-2) is provided on the base assembly (2-1), and a plurality of assembly long holes (2-1-2-1) are provided on the workbench (2-1-2) along the left and right directions; the head tube The positioning support mechanism (2-2), the seat tube and bottom tube positioning clamping mechanism (2-3), the upper and lower fork tube positioning clamping mechanism (2-4), and the ear piece positioning clamping mechanism (2-5) are arranged in sequence from left to right and are respectively matched with the assembly long holes (2-1-2-1) at corresponding positions on the workbench (2-1-2); the head tube positioning support mechanism (2-2), the seat tube and bottom tube positioning clamping mechanism (2-3), the upper and lower fork tube positioning clamping mechanism (2-4), and the ear piece positioning clamping mechanism (2-5) are all provided with a slide rail and a slide seat matching structure.

2. The universal bicycle frame welding positioning and clamping tool according to claim 1 is characterized in that: The base assembly (2-1) is also provided with a flip motor (2-1-1), a motor fixing seat (2-1-4) and a flip bracket (2-1-3); the motor fixing seat (2-1-4) and the flip bracket (2-1-3) are both fixedly mounted on a horizontal ground; the flip motor (2-1-1) is mounted on the motor fixing seat (2-1-4), and its output shaft is fixedly connected to one end of the workbench (2-1-2); the other end of the workbench (2-1-2) is hingedly assembled with the flip bracket (2-1-3).

3. The universal bicycle frame welding positioning and clamping tool according to claim 2 is characterized in that: The head tube positioning support mechanism (2-2) is provided with a first T-shaped support (2-2-4), a first slide rail (2-2-1), a first vertical sliding seat (2-2-2) and a head tube positioning support (2-2-3); the first T-shaped support (2-2-4) is inverted, and the first slide rail (2-2-1) is installed on its vertical arm; the first vertical sliding seat (2-2-2) is mounted on the first slide rail (2-2-1); the first vertical sliding seat (2-2-2) is fixed to an appropriate position of the first slide rail (2-2-1) by means of a top screw locking, and a head tube positioning support (2-2-3) that matches the head tube in the front triangle component of the bicycle frame is installed on the first vertical sliding seat (2-2-2).

4. The universal bicycle frame welding positioning and clamping tool according to claim 2 is characterized in that: The seat tube and bottom tube positioning and clamping mechanism (2-3) comprises an L-shaped support (2-3-1), a second slide rail (2-3-2), a second vertical sliding seat (2-3-3), a seat tube pressure head assembly (2-3-4), a seat tube positioning support plate (2-3-5), a bottom tube positioning seat (2-3-6) and a bottom tube clamping assembly (2-3-7); the horizontal arm of the L-shaped support (2-3-1) is assembled with a long hole at a corresponding position on the workbench (2-1-2), and a group of assembly holes is provided on the front elevation of the vertical arm of the L-shaped support (2-3-1); the second slide rail (2-3-2) is installed on the L-shaped The vertical arm rear face of the support (2-3-1); the second vertical sliding seat (2-3-3) is matched with the second slide rail (2-3-2) and is fixed at an appropriate position on the second slide rail (2-3-2) by means of a top screw lock; the riser pressure head assembly (2-3-4) is installed on the second vertical sliding seat (2-3-3); the riser positioning support plate (2-3-5) is matched with the assembly holes at corresponding positions on the vertical arm front face of the L-shaped support (2-3-1); the bottom tube positioning seat (2-3-6) and the bottom tube clamping assembly (2-3-7) are installed on the horizontal arm of the L-shaped support (2-3-1).

5. The universal bicycle frame welding positioning and clamping tool according to claim 2 is characterized in that: The upper and lower fork tube positioning and clamping mechanism (2-4) is provided with a U-shaped support (2-4-1), an upper fork tube positioning and clamping assembly (2-4-2), and a lower fork tube positioning and clamping assembly (2-4-3); the front and rear vertical arms of the U-shaped support (2-4-1) are non-equal height structures, the rear vertical arm is higher than the front vertical arm, a third slide rail (2-4-4) is provided on the outer side of the rear vertical arm, and a fourth slide rail (2-4-5) is provided on the inner side of the two vertical arms; the upper fork tube positioning and clamping assembly (2-4-2) is assembled with the third slide rail (2-4-4) via a third vertical sliding seat (2-4-6), and the third vertical sliding seat (2-4 -6) is fixed at an appropriate position of the third slide rail (2-4-4) by means of a top screw lock; the lower fork tube positioning and clamping assembly (2-4-3) comprises a lower fork tube positioning unit (2-4-3-1) and a lower fork tube clamping unit (2-4-3-2), the lower fork tube clamping unit (2-4-3-2) is assembled with the fourth slide rail (2-4-5) via a fourth vertical sliding seat (2-4-7), the fourth vertical sliding seat (2-4-7) is fixed at an appropriate position of the fourth slide rail (2-4-5) by means of a top screw lock, and the lower fork tube positioning unit (2-4-3-1) is installed at the bottom of the U-shaped support (2-4-1).

6. The universal bicycle frame welding positioning and clamping tool according to claim 2 is characterized in that: The ear piece positioning and clamping mechanism (2-5) comprises a second T-shaped support (2-5-3), an ear piece positioning assembly (2-5-2) and an ear piece clamping assembly (2-5-1); the second T-shaped support (2-5-3) is inverted, and a fifth slide rail (2-5-4) is arranged on its vertical arm; the ear piece positioning assembly (2-5-2) is assembled with the fifth slide rail (2-5-4) via a fifth vertical sliding seat (2-5-5); the fifth vertical sliding seat ( The ear clamping assembly (2-5-1) is assembled with the fifth slide rail (2-5-4) through a sixth vertical sliding seat (2-5-6), and the sixth vertical sliding seat (2-5-6) is fixed at an appropriate position of the fifth slide rail (2-5-4) by locking with a top screw. The sixth vertical sliding seat (2-5-6) is located below the fifth vertical sliding seat (2-5-5).

7. The universal bicycle frame welding positioning and clamping tool according to claim 6 is characterized in that: The ear piece positioning assembly (2-5-2) comprises a positioning pin (2-5-2-1), a positioning pin seat (2-5-2-2), a horizontal moving seat (2-5-2-3), a horizontal moving track (2-5-2-4) and a horizontal moving track support (2-5-2-5); the positioning pins (2-5-2-1) are symmetrically arranged in two groups, and are respectively installed at the front and rear ends of the horizontal moving seat (2-5-2-3) through the positioning pin seats (2-5-2-2); the positioning pins (2-5-2-1) match the notched grooves (1-3-1) on the ear piece of the rear triangle component of the bicycle frame; the horizontal moving seat (2-5-2-3) is matched with the horizontal moving track (2-5-2-4), and the horizontal moving track (2-5-2-4) is fixedly assembled with the sixth vertical sliding seat (2-5-6) through the horizontal moving track support (2-5-2-5).

8. The universal bicycle frame welding positioning and clamping tool according to claim 7 is characterized in that: A limiting element is provided in the ear piece positioning assembly (2-5-2), and the limiting element comprises a limiting baffle and a limiting groove; the limiting baffle is arranged at two ends of the bottom surface of the horizontal moving seat (2-5-2-3), the limiting groove is arranged in the guide groove of the horizontal moving track (2-5-2-4), and the limiting baffle is inserted into the corresponding limiting groove, and the movable range of the horizontal moving seat (2-5-2-3) is limited by the cooperation of the two.

9. The universal bicycle frame welding positioning and clamping tool according to any one of claims 6 to 8, characterized in that: The ear clamping assembly (2-5-1) comprises a double-acting cylinder (2-5-1-1), an ear top screw (2-5-1-3) and a top screw assembly seat (2-5-1-2); the double-acting cylinder (2-5-1-1) is fixed on a sixth vertical sliding seat (2-5-6); piston rods at both ends of the double-acting cylinder extend in the front-to-back direction and are in a front-to-back symmetrical state; the top screw assembly seat (2-5-1-2) is mounted on the outer end of the piston rod of the double-acting cylinder (2-5-1-1); and a long hole (2-5-1-4) is provided on the top screw assembly seat (2-5-1-2) for adjusting the left and right positions of the ear top screw.

Images