A bicycle front fork component welding tool

Abstract

A bicycle front fork component welding tool, including base and workpiece positioning and pressing mechanism, the base is equipped with bottom plate, stand and connecting plate, the connecting plate is fixedly installed on one end of the bottom plate, the bottom plate is connected with the rotating shaft of the indexing machine of the welding station through the connecting plate, the welding position avoidance groove is arranged on the other end of the bottom plate, the stand is fixedly installed on the bottom plate and is located between the connecting plate and the welding position avoidance groove and is close to the connecting plate, the workpiece positioning and pressing mechanism includes upper stand pipe positioning and pressing unit and fork pipe positioning and pressing unit, the upper stand pipe positioning and pressing unit is installed on the bottom plate and is located on the outside of the welding position avoidance groove, the fork pipe positioning and pressing unit is matched with the bottom plate and the stand and is located on the inside of the welding position avoidance groove, the utility model realizes accurate positioning and reliable fixation of workpiece, and can be matched with workpieces of different size specifications, guarantees welding product quality, improves work efficiency and general performance of tool equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of bicycle manufacturing tooling equipment, specifically a welding tooling for bicycle front fork components. Background Technology

[0002] The bicycle front fork assembly is located at the front of the bicycle frame. Its upper end passes through the front seat tube of the frame and connects to the handlebars, while its lower end mates with the front axle to form the bicycle's steering system. When the rider turns the handlebars, the front fork assembly deflects the front wheel, thereby controlling the bicycle's forward direction.

[0003] As attached Figure 1 As shown, a bicycle front fork component 1 includes an upper stem 1-1, a limiting baffle 1-2, and a fork tube 1-3. A front axle connecting plate 1-3-1 is provided at the lower end of the left and right sections of the fork tube 1-3, and an axle hole 1-3-2 is provided on the front axle connecting plate 1-3-1. The various components of the bicycle front fork component are assembled into one piece using a welding process. During the welding operation of the bicycle front fork component 1, according to relevant process technical requirements, the connection point I between the upper stem 1-1 and the limiting baffle 1-2 is a spot weld, and the connection point II between the upper stem 1-1 and the fork tube is a full weld. To ensure that the bicycle front fork component 1 meets the overall assembly size requirements of the bicycle after assembly and to improve welding efficiency, a special welding fixture matching the structure of the workpiece is required when welding the bicycle front fork component 1. Utility Model Content

[0004] This utility model provides a welding fixture for bicycle front fork components. It aims to achieve accurate positioning and reliable fixation of the workpiece through the cooperation of the base and the workpiece positioning and clamping mechanism. It can be matched with workpieces of different sizes and specifications, thereby ensuring the quality of welded products, improving work efficiency, and enhancing the versatility of the tooling equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for bicycle front fork components includes a base and a workpiece positioning and clamping mechanism. The base has a base plate, a vertical plate, and a connecting plate. The connecting plate is fixedly installed at one end of the base plate, and the base plate is connected to the rotating shaft of a rotary machine at the welding station via the connecting plate. A welding part clearance groove is provided at the other end of the base plate. The vertical plate is fixedly installed on the base plate, located between the connecting plate and the welding part clearance groove, and close to the connecting plate. The workpiece positioning and clamping mechanism includes an upper vertical tube positioning and clamping unit and a fork tube positioning and clamping unit. The upper vertical tube positioning and clamping unit is installed on the base plate, located outside the welding part clearance groove, and the fork tube positioning and clamping unit is fitted with the base plate and the vertical plate, located inside the welding part clearance groove.

[0006] The aforementioned welding fixture for bicycle front fork components includes an upper stem positioning and clamping unit comprising an upper stem positioning block and a downward clamping clamp; the upper stem positioning block is assembled with a base plate, and an upper stem positioning groove is provided on the top surface of the upper stem positioning block, which matches the outer wall of the upper stem workpiece; a limiting stop positioning groove is provided on the inner end of the upper stem positioning block; the downward clamping clamp is fitted with the upper stem positioning block.

[0007] The aforementioned welding fixture for bicycle front fork components includes a fork tube positioning and clamping unit comprising a fork tube limiting post assembly, a fork tube positioning block, and a front axle connecting plate clamping assembly. The fork tube positioning blocks are mounted on the base plate of the base, with two sets arranged symmetrically on the left and right sides. Arc-shaped positioning grooves matching the left and right parts of the fork tube workpiece are provided on the fork tube positioning blocks. The fork tube limiting post assembly includes a limiting post body and a limiting seat. The limiting post body is assembled to the base plate of the base through the limiting seat, and the limiting seat is arranged on the symmetrical axis of the left and right sets of fork tube positioning blocks.

[0008] The aforementioned welding fixture for bicycle front fork components includes a front axle connecting plate clamping assembly mounted on a base plate, comprising a fixed seat and a side-push clamping clamp. The fixed seat is mounted in the middle of the base plate, with outwardly extending columns at both ends. Pin holes parallel to the central axis of the columns are provided on the outwardly extending columns at both ends. Two sets of side-push clamping clamps are symmetrically arranged on the left and right sides. Each set has a pin on its clamping head that can be inserted into the pin hole. The diameter of the pin is smaller than the shaft hole of the front axle connecting plate of the fork tube workpiece.

[0009] The aforementioned welding fixture for bicycle front forks has an upper stem positioning block position adjustment hole, a lower clamping clamp position adjustment hole, a fork tube positioning block position adjustment hole, and a limit seat assembly hole on the base plate. The upper stem positioning block position adjustment hole and the lower clamping clamp position adjustment hole are elongated holes arranged outside the clearance groove of the welding part. The fork tube positioning block position adjustment hole is an elongated hole arranged inside the clearance groove of the welding part. The limit seat assembly hole is a set of circular holes arranged along the symmetrical axis of the left and right sets of fork tube positioning blocks.

[0010] The aforementioned welding fixture for bicycle front fork components includes a fork tube limiting post assembly in which the limiting post body is fixed to the outer end of the limiting seat, and a limiting seat position adjustment hole is provided on the limiting seat, wherein the limiting seat position adjustment hole is an elongated hole.

[0011] This utility model provides a welding fixture for bicycle front fork components. It uses an upper upright tube positioning and clamping unit arranged on the base plate to position and clamp the upper upright tube workpiece. The fork tube workpiece is positioned by a fork tube limiting post assembly and a fork tube positioning block arranged on the base plate. Finally, the fork tube workpiece is clamped and fixed by a front axle connecting plate clamping assembly arranged on the base plate. This achieves accurate positioning and reliable fixing of the welded workpiece, ensuring the quality of the welded product and enabling rapid workpiece positioning and clamping operations, greatly improving work efficiency. This utility model features an upper upright tube positioning block position adjustment hole, a downward clamping clamp position adjustment hole, a fork tube positioning block position adjustment hole, and a limiting seat assembly hole on the base plate. A limiting seat position adjustment hole is also provided on the limiting seat of the fork tube limiting post assembly. Therefore, it can be matched with workpieces of different sizes and specifications, thereby improving the versatility of the welding fixture. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the bicycle front fork component involved in this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the base structure; Figure 4 This is a schematic diagram of the upper pipe positioning block structure; Figure 5 This is the main sectional view of the upper riser positioning block; Figure 6 This is a schematic diagram of the side-push clamping clamp in the open state of the front axle connecting plate clamping assembly; Figure 7 This is a schematic diagram of the closed state of the side-push clamping clamp in the front axle connecting plate clamping assembly; Figure 8 This is a schematic diagram of the working state of this utility model.

[0013] Explanation of each label in the diagram: 1 is the bicycle front fork component, 1-1 is the upper stem tube, 1-2 is the limit stop plate, 1-3 is the fork tube, 1-3-1 is the front axle connecting plate, and 1-3-2 is the axle hole; 2 is the base, 2-1 is the base plate, 2-2 is the upright plate, 2-3 is the connecting plate, 2-4 is the welding part clearance groove, 2-5 is the upper upright pipe positioning block position adjustment hole, 2-6 is the lower pressing clamp position adjustment hole, 2-7 is the fork pipe positioning block position adjustment hole, and 2-8 is the limit seat assembly hole. 3 is the upper riser positioning block, 3-1 is the upper riser positioning groove, 3-2 is the limit stop positioning groove, and 3-3 is the threaded hole; 4 is a downward-pressing clamping clamp; 5 is the fork tube limiting post assembly, 5-1 is the limiting post body, and 5-2 is the limiting seat; 6 is the fork tube positioning block; 7 is the front axle connecting plate clamping assembly, 7-1 is the fixing seat, 7-1-1 is the pin hole, 7-2 is the side push clamping clamp, and 7-2-1 is the shaft pin. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Referring to Figure 1, a bicycle front fork component 1 includes an upper stem 1-1, a limiting baffle 1-2, and a fork tube 1-3. Front axle connecting plates 1-3-1 are pre-welded to the lower ends of the left and right sections of the fork tube 1-3. Axle holes 1-3-2 are provided on the front axle connecting plates 1-3-1. The upper stem 1-1, the limiting baffle 1-2, and the fork tube 1-3 are welded together as a single unit. According to relevant welding process requirements, when welding this bicycle front fork component 1, the connection point I between the upper stem 1-1 and the limiting baffle 1-2 is spot-welded, and the connection point II between the upper stem 1-1 and the fork tube is fully welded.

[0016] See Figure 1 , Figure 2 , Figure 3 To ensure Figure 1 The bicycle front fork component 1 shown in the diagram meets the overall assembly size requirements of the bicycle after welding, improving welding efficiency. This utility model provides a welding fixture for bicycle front fork components, comprising a base 2 and a workpiece positioning and clamping mechanism. The base 2 has a base plate 2-1, a vertical plate 2-2, and a connecting plate 2-3. The connecting plate 2-3 is fixedly installed at one end of the base plate 2-1. The base plate 2-1 is connected to the rotating shaft of the indexing machine at the welding station via the connecting plate 2-3. A welding area avoidance mechanism is provided at the other end of the base plate 2-1. The vertical plate 2-2 is fixedly installed on the base plate 2-1, located between the connecting plate 2-3 and the welding part clearance groove 2-4, and close to the connecting plate 2-3; the workpiece positioning and clamping mechanism includes an upper tube positioning and clamping unit and a fork tube positioning and clamping unit. The upper tube positioning and clamping unit is installed on the base plate 2-1 and located outside the welding part clearance groove 2-4. The fork tube positioning and clamping unit is fitted with the base plate 2-1 and the vertical plate 2-2 and located inside the welding part clearance groove 2-4.

[0017] See Figure 1 , Figure 2 , Figure 4 , Figure 5The welding fixture for bicycle front fork components of this utility model includes an upper upright tube positioning and clamping unit comprising an upper upright tube positioning block 3 and a downward clamping clamp 4. The upper upright tube positioning block 3 is assembled with a base plate 2-1 through a threaded hole 3-3 at the bottom of the upper upright tube positioning groove 3-1. An upper upright tube positioning groove 3-1 is provided on the top surface of the upper upright tube positioning block 3, which matches the outer wall of the upper upright tube 1-1 workpiece. A limiting baffle positioning groove 3-2 is provided on the inner end of the upper upright tube positioning block 3. The downward clamping clamp 4 is fitted with the upper upright tube positioning block 3, and the clamping head of the downward clamping clamp 4 can clamp and fix the upper upright tube 1-1 workpiece placed in the upper upright tube positioning groove 3-1.

[0018] See Figure 1 , Figure 2 The welding fixture for bicycle front fork components described in this utility model includes a fork tube positioning and clamping unit comprising a fork tube limiting post assembly 5, a fork tube positioning block 6, and a front axle connecting piece clamping assembly 7. The fork tube positioning block 6 is mounted on the base plate 2-1 of the base 2, with two sets arranged symmetrically on the left and right sides. An arc-shaped positioning groove matching the left and right parts of the fork tube 1-3 workpiece is provided on the fork tube positioning block 6. The fork tube limiting post assembly 5 includes a limiting post body 5-1 and a limiting seat 5-2. The limiting post body 5-1 is assembled with the base plate 2-1 of the base 2 through the limiting seat 5-2. The limiting seat 5-2 is arranged on the symmetrical axis of the two sets of fork tube positioning blocks 6.

[0019] See Figure 1 , Figure 2 , Figure 6 , Figure 7The welding fixture for bicycle front fork components of this utility model has a front axle connecting plate clamping assembly 7 mounted on the upright plate 2-2 of the base 2, including a fixed seat 7-1 and a side-push clamping clamp 7-2; the fixed seat 7-1 is installed in the middle part of the upright plate 2-2, and its left and right ends are outwardly extending columns, and pin holes 7-1-1 parallel to the central axis of the columns are provided on the outwardly extending columns at the left and right ends; the side-push clamping clamp 7-2 is symmetrically arranged in two sets, and each set of clamping heads is provided with a shaft pin 7-2-1 that can be inserted into the pin hole 7-1-1. The diameter of the shaft pin 7-2-1 is smaller than the shaft hole 1-3-2 of the front axle connecting plate 1-3-1 of the fork tube 1-3 workpiece. Before welding the bicycle front fork components, operate the side-push clamping pliers 7-2 to open it, place the fork tube 1-3 workpiece, and position the fork tube 1-3 workpiece by cooperating with the fork tube limiting post assembly 5 and the fork tube positioning block 6. At this time, the shaft hole 1-3-2 of the front axle connecting piece 1-3-1 of the fork tube 1-3 workpiece is in a position opposite to the shaft pin 7-2-1 set on the pressure head of the side-push clamping pliers 7-2. Then operate the side-push clamping pliers 7-2 to close it, and the shaft pin 7-2-1 passes through the shaft hole 1-3-2 of the front axle connecting piece 1-3-1 of the fork tube 1-3 workpiece and is inserted into the pin holes 7-1-1 at both ends of the fixing seat 7-1. The pressure head then presses and fixes the front axle connecting piece 1-3-1 of the fork tube 1-3 workpiece.

[0020] See Figure 2 , Figure 3To match bicycle fork components 1 of different sizes and specifications, the following technical solution is adopted in the preferred embodiment of this utility model: the base plate 2-2 of the base 2 is also provided with an upper tube positioning block position adjustment hole 2-5, a lower clamping clamp position adjustment hole 2-6, a fork tube positioning block position adjustment hole 2-7, and a limit seat assembly hole 2-8; the upper tube positioning block position adjustment hole 2-5 and the lower clamping clamp position adjustment hole 2-6 are elongated holes arranged on the outside of the welding part clearance groove 2-4; the fork tube positioning block position adjustment hole 2-7 is an elongated hole arranged on the inside of the welding part clearance groove 2-4; the limit seat assembly hole 2-8 is a set of circular holes arranged along the symmetrical axis of the left and right sets of fork tube positioning blocks 6. In this embodiment, the installation positions of the riser positioning block 3, the downward clamping clamp 4, and the fork positioning block 6 can be adjusted according to the size and specifications of the welded workpiece. Simultaneously, the position of the limit seat 5-2 can be adjusted in stages by assembling it with different limit seat assembly holes 2-8. Further optimizing this embodiment, in the fork limiting post assembly 5, the limit post body 5-1 is fixed to the outer end of the limit seat 5-2. A limit seat position adjustment hole is provided on the limit seat 5-2. This adjustment hole is an elongated hole, and the limit seat 5-2 is assembled to the base plate 2-2 by a bolt assembly passing through the limit seat assembly hole 2-8 and the limit seat position adjustment hole. The position of the limit post body 5-1 can be adjusted steplessly through the limit seat position adjustment hole.

[0021] See Figures 1 to 8 Before welding the bicycle fork component 1 using this utility model, the base plate 2-1 of the base 2 can be made horizontal. After placing the workpiece on the base 2, the workpiece can be positioned and clamped by the upper tube positioning and clamping unit and the fork tube positioning and clamping unit installed on the base 2. When performing the welding operation, the upper tube 1-1 and the fork tube 1-3 joint part can be welded first, and the limiting baffle 1-2 can be spot welded to the upper tube 1-1. Then, the welding station rotation machine drives the base 2 to rotate 180 degrees in space, and the other side of the upper tube 1-1 and the fork tube 1-3 joint part can be welded.

Claims

1. A bicycle fork component welding fixture, characterized by: The system includes a base (2) and a workpiece positioning and clamping mechanism. The base (2) has a base plate (2-1), a vertical plate (2-2), and a connecting plate (2-3). The connecting plate (2-3) is fixedly installed at one end of the base plate (2-1). The base plate (2-1) is connected to the rotating shaft of the indexing machine at the welding station through the connecting plate (2-3). A welding part clearance groove (2-4) is provided at the other end of the base plate (2-1). The vertical plate (2-2) is fixedly installed on the base plate (2-1). Located between the connecting plate (2-3) and the welding part clearance groove (2-4), close to the connecting plate (2-3); the workpiece positioning and clamping mechanism includes an upper tube positioning and clamping unit and a fork tube positioning and clamping unit. The upper tube positioning and clamping unit is installed on the base plate (2-1) and located outside the welding part clearance groove (2-4). The fork tube positioning and clamping unit is fitted with the base plate (2-1) and the upright plate (2-2) and located inside the welding part clearance groove (2-4).

2. The bicycle fork component welding fixture of claim 1, wherein: The upper riser positioning and clamping unit includes an upper riser positioning block (3) and a downward clamping clamp (4); the upper riser positioning block (3) is assembled with the base plate (2-1), and an upper riser positioning groove (3-1) is provided on the top surface of the upper riser positioning block (3). The upper riser positioning groove (3-1) matches the outer wall of the upper riser (1-1) workpiece, and a limiting baffle positioning groove (3-2) is provided on the inner end of the upper riser positioning block (3); the downward clamping clamp (4) is fitted with the upper riser positioning block (3).

3. The welding fixture for bicycle front fork components according to claim 2, characterized in that: The fork tube positioning and clamping unit includes a fork tube limiting post assembly (5), a fork tube positioning block (6), and a front axle connecting plate clamping assembly (7). The fork tube positioning block (6) is installed on the base plate (2-1) of the base (2), with two sets arranged symmetrically on the left and right sides. An arc-shaped positioning groove matching the left and right parts of the fork tube (1-3) workpiece is provided on the fork tube positioning block (6). The fork tube limiting post assembly (5) includes a limiting post body (5-1) and a limiting seat (5-2). The limiting post body (5-1) is assembled with the base plate (2-1) of the base (2) through the limiting seat (5-2). The limiting seat (5-2) is arranged on the symmetrical axis of the two sets of fork tube positioning blocks (6).

4. The bicycle fork component welding fixture of claim 3, wherein: The front axle connecting plate clamping assembly (7) is installed on the upright plate (2-2) of the base (2), including a fixed seat (7-1) and a side-push clamping clamp (7-2); the fixed seat (7-1) is installed in the middle part of the upright plate (2-2), and its left and right ends are outwardly extending columns. On the outwardly extending columns at the left and right ends, there are pin holes (7-1-1) parallel to the central axis of the columns; the side-push clamping clamp (7-2) is symmetrically arranged in two sets on the left and right, and on the clamping head of each set, there is a shaft pin (7-2-1) that can be inserted into the pin hole (7-1-1). The diameter of the shaft pin (7-2-1) is smaller than the shaft hole (1-3-2) of the front axle connecting plate (1-3-1) of the fork tube (1-3) workpiece.

5. A bicycle fork component welding fixture as claimed in claim 3 or 4, characterised in that: The base plate (2-2) is also provided with an upper tube positioning block position adjustment hole (2-5), a lower clamping clamp position adjustment hole (2-6), a fork tube positioning block position adjustment hole (2-7), and a limit seat assembly hole (2-8); the upper tube positioning block position adjustment hole (2-5) and the lower clamping clamp position adjustment hole (2-6) are elongated holes arranged on the outside of the welding part clearance groove (2-4); the fork tube positioning block position adjustment hole (2-7) is an elongated hole arranged on the inside of the welding part clearance groove (2-4); the limit seat assembly hole (2-8) is a set of circular holes arranged along the symmetrical axis of the left and right fork tube positioning blocks (6).

6. The bicycle fork component welding fixture of claim 5, wherein: In the fork tube limiting post assembly (5), the limiting post body (5-1) is fixed to the outer end of the limiting seat (5-2), and a limiting seat position adjustment hole is provided on the limiting seat (5-2), the limiting seat position adjustment hole being an elongated hole.

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