An integrated child scooter frame welding tool
Through the innovative design of the integrated children's scooter frame welding fixture, the workpiece is accurately positioned and reliably fixed, solving the problems of low dimensional accuracy and slippage in the existing technology and improving welding efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI WELDINGJUE ROBOT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-31
AI Technical Summary
The existing welding fixtures for children's scooter frames require multiple reference conversions during positioning and clamping, resulting in low dimensional accuracy and a tendency for workpieces to slip off, thus reducing work efficiency.
By employing a combination of a base plate, a front riser limiting mechanism, a side-push workpiece clamping clamp, a main beam tube positioning mechanism, a seat tube positioning mechanism, and a downward-pressing workpiece clamping clamp, precise positioning and reliable fixation of the workpiece can be achieved. Through the connection between the base plate and the welding station indexing machine, positioning and clamping operations can be completed on a horizontal plane.
It improves the dimensional accuracy of welded products, prevents workpiece slippage, and significantly improves work efficiency.
Smart Images
Figure CN224574967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bicycle production equipment, specifically to an integral welding fixture for children's scooter frames. Background Technology
[0002] A children's scooter is a sports and recreational tool designed specifically for toddlers, primarily to improve their balance. It has no pedals or chain drive system; children propel themselves forward by pushing off the ground with their feet. The frame of a children's scooter typically consists of a front head tube, main beam tube, seat tube, and rear fork tube, all assembled together using a welding process.
[0003] As attached Figure 1 As shown, a welded assembly of a child scooter frame consisting of a front riser tube 1, a main beam tube 2, and a seat tube 3 is described. Before welding this frame assembly, an arc-shaped bevel matching the outer wall of the front riser tube is cut at the front end of the main beam tube 2. An insertion hole is made at the rear of the main beam tube 2, and the seat tube 3 is inserted into the insertion hole at the rear of the main beam tube 2. Then, welding operations are performed on the front riser tube 1, the main beam tube 2, and the seat tube 3. To ensure that the welded product meets the assembly dimensional requirements and that the central axes of the front riser tube 1, the main beam tube 2, and the seat tube 3 are located in the same plane, a special welding fixture for assembling the front riser tube 1, the main beam tube 2, and the seat tube 3 is required. Existing integrated children's scooter frame welding fixtures employ independently set mounting brackets and base assembly structures for positioning and clamping each component of the workpiece, using the base as the positioning reference. Therefore, the positioning of the workpiece requires at least two reference conversions, resulting in low dimensional accuracy of the welded product due to accumulated errors. In addition, when clamping the workpiece, the existing integrated children's scooter frame welding fixtures require the positioning and clamping operation to be completed on a plane perpendicular to the welding worktable, which easily leads to the workpiece slipping before clamping, making it inconvenient for operators and reducing work efficiency. Utility Model Content
[0004] This utility model provides an integrated welding fixture for children's scooter frames. It aims to achieve precise positioning and reliable fixation of the workpiece to be welded through the cooperation of the base plate, the front upright tube limiting mechanism, the side-push workpiece clamping clamp, the main beam tube positioning mechanism, the seat tube positioning mechanism, and the workpiece clamping clamp, thereby ensuring the quality of welded products and improving work efficiency.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for an integrated children's scooter frame includes a base plate, a front upright tube limiting mechanism, a side-push workpiece clamping clamp, a main beam tube positioning mechanism, a seat tube positioning mechanism, and a downward-pressing workpiece clamping clamp. The base plate is assembled with the rotating shaft of a welding station indexing machine via a connecting seat. The base plate has a welding clearance groove for the front upright tube and the main beam tube, and a welding clearance hole for the seat tube and the main beam tube. The front upright tube limiting mechanism is assembled with the side-push workpiece clamping clamp. The side-push workpiece clamping clamp is mounted on the base plate and located in the welding clearance groove for the front upright tube and the main beam tube. The main beam tube positioning mechanism includes a main beam tube positioning block and a main beam tube limiting block assembly, which are respectively arranged on the front and rear sides of the welding clearance hole between the seat tube and the main beam tube; the seat tube positioning mechanism includes a seat tube positioning block and a seat tube limiting block, which are respectively arranged on the left and right sides of the welding clearance hole between the seat tube and the main beam tube; the downward pressing workpiece clamp is installed on the base plate and cooperates with the main beam tube positioning mechanism and the seat tube positioning mechanism to press and fix the main beam tube and seat tube of the workpiece.
[0006] The aforementioned integrated children's scooter frame welding fixture has an inclined main beam tube positioning block with an arc-shaped groove matching the outer wall of the main beam tube. The main beam tube limiting block assembly is arranged coaxially with the main beam tube positioning block and axially limits the rear end of the main beam tube through the main beam tube limiting block assembly.
[0007] The aforementioned integrated children's scooter frame welding fixture has an arc-shaped groove on the seat post positioning block and the seat post limiting block that matches the outer wall of the seat post. A limiting surface is provided at the outer end of the arc-shaped groove of the seat post limiting block, and the left and right positions of the seat post are limited by the limiting surface.
[0008] The aforementioned integrated children's scooter frame welding fixture includes a front upright tube limiting mechanism with an arc-shaped groove that matches the outer wall of the front upright tube. The central axis of the arc-shaped groove is parallel to the central axis of the front upright tube of the workpiece. A front upright tube limiting baffle is provided at one end of the arc-shaped groove. The front upright tube is limited by the cooperation between the arc-shaped groove and the front upright tube limiting baffle.
[0009] The aforementioned integrated children's scooter frame welding fixture includes a main beam tube positioning block position adjustment hole on the base plate, which consists of two sets of elongated holes extending in the left-right direction; the main beam tube limiting block assembly is provided with a main beam tube limiting block assembly position adjustment elongated hole, and the main beam tube limiting block assembly is assembled with the base plate by bolt assemblies passing through the main beam tube limiting block assembly position adjustment elongated hole.
[0010] The aforementioned integrated children's scooter frame welding fixture includes a seat post positioning mechanism adjustment groove on the base plate, with the seat post positioning block fitted to the seat post positioning mechanism adjustment groove; the seat post limiting block has a seat post limiting block position adjustment elongated hole, and the seat post limiting block is mounted on the seat post positioning mechanism adjustment groove on the base plate by a bolt assembly passing through the seat post limiting block position adjustment elongated hole.
[0011] The aforementioned integrated children's scooter frame welding fixture has a U-shaped groove on the base plate for welding the front upright tube and the main beam tube, with the opening penetrating the left edge of the base plate. The welding clearance hole on the base plate for welding the seat tube and the main beam tube is a rectangular hole near the right edge of the base plate.
[0012] The aforementioned integrated children's scooter frame welding fixture includes at least four sets of downward-pressing workpiece clamping pliers, of which at least two sets cooperate with the main beam tube positioning block to clamp and fix the main beam tube, and the other downward-pressing workpiece clamping pliers cooperate with the seat tube positioning block and the seat tube limiting block to clamp and fix the seat tube.
[0013] This utility model provides a welding fixture for an integrated children's scooter frame. During the workpiece clamping process, after the workpiece is positioned, the main beam tube of the workpiece is first positioned using the main beam tube positioning block and the main beam tube limiting block assembly in the main beam tube positioning mechanism. Then, the seat tube positioning block and the seat tube limiting block in the seat tube positioning mechanism position the seat tube of the workpiece, and the front upright tube limiting mechanism limits the position of the front upright tube of the workpiece. Next, the downward-pressing workpiece clamping clamp is used to clamp and fix the main beam tube and the seat tube respectively, and the side-pushing workpiece clamping clamp is used to push the front upright tube to align with the main beam tube, thus completing the clamping and fixing of the welded workpiece. In the above operation, both the front upright tube and the seat tube use the main beam tube as the positioning reference, thereby reducing the accumulation of errors caused by reference conversion and improving the dimensional accuracy of the welded product. This utility model adopts a structure in which one end of the base plate is fixedly connected to the rotating shaft of the welding station indexing machine. When performing welding workpiece clamping operations, the base plate is first rotated to a horizontal state by the indexing machine. The operator can then complete the positioning and clamping of the workpiece on the horizontal plane, thereby avoiding the slippage phenomenon caused by clamping the workpiece on the vertical plane, making the workpiece clamping operation easier, and thus significantly improving work efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the welded components of the front upright tube, main beam tube, and seat tube of the children's scooter frame, as described in a specific embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 yes Figure 2 K-direction view; Figure 4 yes Figure 3 Top view; Figure 5 This is a schematic diagram of the base plate structure; Figure 6 This is a schematic diagram of the working state of this utility model.
[0015] Explanation of each label in the diagram: 1 is the front riser, 2 is the main beam riser, and 3 is the seat riser. 4 is the base plate, 4-1 is the connecting seat, 4-2 is the clearance groove for welding the front riser and the main beam pipe, 4-3 is the clearance hole for welding the seat pipe and the main beam pipe, 4-4 is the position adjustment hole for the main beam pipe positioning block, and 4-5 is the adjustment slide groove for the seat pipe positioning mechanism. 5 is a side-push type workpiece clamping clamp; 6 is the front riser limiting mechanism, and 6-1 is the front riser limiting baffle; 7 is the main beam tube positioning mechanism, 7-1 is the main beam tube positioning block, 7-2 is the main beam tube limiting block assembly, and 7-1-2 is the main beam tube limiting block assembly position adjustment elongated hole; 8 is the seat tube positioning mechanism, 8-1 is the seat tube limiting block, 8-1-1 is the limiting surface, 8-1-2 is the seat tube limiting block position adjustment elongated hole, and 8-2 is the seat tube positioning block; 9 is a downward-pressing workpiece clamp. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0017] Referring to Figure 1, a welded assembly of a child scooter frame consisting of a front riser 1, a main beam 2, and a seat tube 3 is described. Before welding this frame assembly, an arc-shaped bevel matching the outer wall of the front riser is cut at the front end of the main beam 2. An insertion hole is made at the rear of the main beam 2, and the seat tube 3 is inserted into the insertion hole at the rear of the main beam 2. Then, welding is performed between the front riser 1 and the main beam 2 at joint I, and between the main beam 2 and the seat tube at joint II. To ensure that the welded product meets the assembly dimensional requirements and that the central axes of the front riser 1, main beam 2, and seat tube 3 are in the same plane, a special welding fixture for assembling the front riser 1, main beam 2, and seat tube 3 is required.
[0018] See Figure 2 , Figure 3 , Figure 4 In order to achieve Figure 1The precise positioning and reliable fixing of the welding workpiece shown in the figure ensures the quality of the welded products and improves work efficiency. This utility model provides an integrated welding fixture for children's scooter frames, including a base plate 4, a front upright tube limiting mechanism 5, a side-push type workpiece clamping clamp 6, a main beam tube positioning mechanism 7, a seat tube positioning mechanism 8, and a downward-pressing type workpiece clamping clamp 9. The base plate 4 is assembled with the rotating shaft of the welding station indexing machine, and the front upright tube limiting mechanism 5, the side-push type workpiece clamping clamp 6, the main beam tube positioning mechanism 7, the seat tube positioning mechanism 8, and the downward-pressing type workpiece clamping clamp 9 are mounted on the base plate 4.
[0019] See Figure 5 The integrated children's scooter frame welding fixture of this utility model has a connecting seat 4-1, a welding clearance groove 4-2 between the front upright tube and the main beam tube, and a welding clearance hole 4-3 between the seat tube and the main beam tube on its base plate 4; the connecting seat 4-1 is arranged at one end of the base plate 4; the welding clearance groove 4-2 between the front upright tube and the main beam tube is a U-shaped groove with an opening that penetrates the left edge of the base plate 4, and is arranged between the connecting seat 4-1 and the welding clearance hole 4-3 between the seat tube and the main beam tube; the welding clearance hole 4-3 between the seat tube and the main beam tube is a rectangular hole near the right edge of the base plate.
[0020] See Figure 2 , Figure 3 , Figure 4 The integrated children's scooter frame welding fixture of this utility model has a side-push workpiece clamping clamp 6 installed on the base plate 4, located in front of the welding clearance groove 4-2 between the front upright tube and the main beam tube; the front upright tube limiting mechanism 5 is assembled with the side-push workpiece clamping clamp 6, and the front upright tube limiting mechanism 6 is provided with an arc-shaped groove that matches the outer wall of the front upright tube 1. The central axis of the arc-shaped groove is parallel to the central axis of the front upright tube 1. A front upright tube limiting baffle 6-1 is provided at one end of the arc-shaped groove, and the front upright tube 1 is limited by the cooperation between the arc-shaped groove and the front upright tube limiting baffle 6-1.
[0021] See Figure 2 , Figure 3 , Figure 4 The integrated children's scooter frame welding fixture of this utility model includes a main beam tube positioning mechanism 7 comprising a main beam tube positioning block 7-1 and a main beam tube limiting block assembly 7-2. The main beam tube positioning block 7-1 and the main beam tube limiting block assembly 7-2 are respectively arranged on the front and rear sides of the welding clearance hole 4-3 between the seat tube and the main beam tube. The main beam tube positioning block 7-1 is inclined and has an arc-shaped groove matching the outer wall of the main beam tube 2. The main beam tube limiting block assembly 7-2 is arranged coaxially with the main beam tube positioning block 7-1 and axially limits the rear end of the main beam tube 2.
[0022] See Figure 2 , Figure 3 , Figure 4The integrated children's scooter frame welding fixture of this utility model includes a seat tube positioning mechanism 8 comprising a seat tube positioning block 8-2 and a seat tube limiting block 8-1. The seat tube positioning block 8-2 and the seat tube limiting block 8-1 are respectively arranged on the left and right sides of the welding clearance hole 4-3 between the seat tube and the main beam tube. The seat tube positioning block 8-2 and the seat tube limiting block 8-1 are provided with arc-shaped grooves that match the outer wall of the seat tube 3. The outer end of the arc-shaped groove of the seat tube limiting block 8-1 is provided with a limiting surface 8-1-1, which can limit the left and right positions of the seat tube 3.
[0023] See Figure 2 , Figure 3 , Figure 4 The integrated children's scooter frame welding fixture of this utility model has a downward pressing workpiece clamp 9 installed on the base plate 4, which cooperates with the main beam tube positioning block 7-1 in the main beam tube positioning mechanism 7, the seat tube positioning block 8-2 and the seat tube limiting block 8-1 in the seat tube positioning mechanism 8 to press and fix the main beam tube 2 and the seat tube 3 of the workpiece.
[0024] See Figure 2 , Figure 3 , Figure 4 In a preferred embodiment of the integrated children's scooter frame welding fixture of this utility model, to match children's scooter frames of different sizes and specifications, the base plate 4 is further provided with a main beam tube positioning block position adjustment hole 4-4 and a seat tube positioning mechanism adjustment groove 4-5, and a main beam tube limiting block assembly 7-2 is provided with a main beam tube limiting block assembly position adjustment elongated hole 7-2-1, and a seat tube limiting block 8-1 is provided with a seat tube limiting block position adjustment elongated hole 8-1-2; wherein the main beam tube positioning block position adjustment hole 4-4 is... The two sets of elongated holes extending in the left and right directions can adjust the placement position of the main beam tube 2 by adjusting the assembly position of the main beam tube positioning block 7-2 on the main beam tube positioning block position adjustment hole 4-4. At the same time, the position of the main beam tube limiting block assembly 7-2 can be adjusted accordingly by adjusting the position of the main beam tube limiting block assembly 7-2 through the elongated hole 7-2-1, the position of the seat tube limiting block 8-1 can be adjusted by adjusting the position of the seat tube limiting block 8-1 through the elongated hole 8-1-2, and the position of the seat tube positioning block 8-2 can be adjusted by adjusting the sliding groove 4-5 of the seat tube positioning mechanism.
[0025] See Figures 1 to 6When using this utility model to weld the front riser 1, main beam 2, and seat tube 3 of a children's scooter frame, after the workpiece is placed in position, the main beam 2 of the workpiece can first be positioned by the cooperation of the main beam 2 positioning block 7-1 and the main beam 2 limiting block 7-2 in the main beam 2 positioning mechanism 7. Then, the seat tube 3 of the workpiece can be positioned by the cooperation of the seat tube 2 positioning block 8-2 and the seat tube limiting block 8-1 in the seat tube positioning mechanism 8. The position of the front riser 1 of the workpiece is limited by the front riser limiting mechanism 6. Then, the downward pressing workpiece clamp 9 is operated to press the workpiece into place. The main beam tube 2 and the seat tube 3 are clamped and fixed. The side-push type workpiece clamping clamp 5 is operated to push the front riser tube 1 to match and connect with the main beam tube 2. At this point, the clamping and fixing of the welded workpiece is completed. The front riser tube 1 and the main beam tube 2, and the main beam tube 2 and the seat tube 3 are welded by a robot or manually. After one side of the workpiece is welded, the base plate 4 is rotated 180 degrees by the welding station indexing machine. Then, the other side of the workpiece is welded by the welding operation through the welding clearance groove 4-2 between the front riser tube and the main beam tube and the welding clearance hole 4-3 between the seat tube and the main beam tube.
Claims
1. A unitary child scooter frame welding fixture, characterized by: The system includes a base plate (4), a front riser limiting mechanism (5), a side-push workpiece clamping clamp (6), a main beam tube positioning mechanism (7), a seat tube positioning mechanism (8), and a downward-pressing workpiece clamping clamp (9). The base plate (4) is assembled with the rotating shaft of the welding station indexing machine via a connecting seat (4-1). The base plate (4) is provided with a welding clearance groove (4-2) for the front riser and the main beam tube, and a welding clearance hole (4-3) for the seat tube and the main beam tube. The front riser limiting mechanism (5) is assembled with the side-push workpiece clamping clamp (6). The side-push workpiece clamping clamp (6) is installed on the base plate (4) and is located in front of the welding clearance groove (4-2) for the front riser and the main beam tube. The main beam tube positioning mechanism (7) includes a main... The main beam tube positioning block (7-1) and the main beam tube limiting block assembly (7-2) are respectively arranged on the front and rear sides of the welding clearance hole (4-3) between the seat tube and the main beam tube; the seat tube positioning mechanism (8) includes the seat tube positioning block (8-2) and the seat tube limiting block (8-1), which are respectively arranged on the left and right sides of the welding clearance hole (4-3) between the seat tube and the main beam tube; the pressing workpiece clamp (9) is installed on the base plate (4) and cooperates with the main beam tube positioning mechanism (7) and the seat tube positioning mechanism (8) to press and fix the main beam tube (2) and the seat tube (3) of the workpiece.
2. The monolithic child glider frame welding fixture of claim 1, wherein: The main beam tube positioning block (7-1) is arranged at an angle, and an arc-shaped groove matching the outer wall of the main beam tube (2) is provided on the main beam tube positioning block (7-1). The main beam tube limiting block assembly (7-2) is arranged coaxially with the main beam tube positioning block (7-1) and the main beam tube limiting block assembly (7-2) limits the axial movement of the rear end of the main beam tube (2).
3. The welding fixture for the integral children's scooter frame according to claim 2, characterized in that: The seat tube positioning block (8-2) and the seat tube limiting block (8-1) are provided with arc-shaped grooves that match the outer wall of the seat tube (3). The outer end of the arc-shaped groove of the seat tube limiting block (8-1) is provided with a limiting surface (8-1-1), which limits the left and right positions of the seat tube (3).
4. The monolithic child glider frame welding fixture of claim 3, wherein: The front riser limiting mechanism (6) is provided with an arc-shaped groove that matches the outer wall of the front riser (1). The central axis of the arc-shaped groove is parallel to the central axis of the front riser (1). A front riser limiting baffle (6-1) is provided at one end of the arc-shaped groove. The front riser (1) is limited by the cooperation between the arc-shaped groove and the front riser limiting baffle (6-1).
5. The monolithic child glider frame welding fixture of claim 4, wherein: The base plate (4) is also provided with a main beam tube positioning block position adjustment hole (4-4), which is two sets of long holes extending in the left and right directions; the main beam tube limiting block assembly (7-2) is provided with a main beam tube limiting block assembly position adjustment long hole (7-2-1), and the main beam tube limiting block assembly (7-2) is assembled with the base plate (4) by a bolt assembly passing through the main beam tube limiting block assembly position adjustment long hole (7-2-1).
6. The monolithic child glider frame welding fixture of claim 5, wherein: The base plate (4) is also provided with a seat tube positioning mechanism adjustment slide (4-5), and the seat tube positioning block (8-2) is fitted with the seat tube positioning mechanism adjustment slide (4-5); the seat tube limiting block (8-1) is provided with a seat tube limiting block position adjustment elongated hole (8-1-2), and the seat tube limiting block (8-1) is installed on the seat tube positioning mechanism adjustment slide (4-5) of the base plate (4) by a bolt assembly passing through the seat tube limiting block position adjustment elongated hole (8-1-2).
7. The one-piece child glider frame welding fixture of claim 6, wherein: The front riser and main beam weld clearance groove (4-2) on the base plate (4) is a U-shaped groove with an opening that runs through the left edge of the base plate. The seat tube and main beam weld clearance hole (4-3) on the base plate is a rectangular hole near the right edge of the base plate.
8. The one-piece child glider frame welding fixture of claim 6, wherein: The number of the pressing workpiece clamps (9) is not less than four sets, of which at least two sets of pressing workpiece clamps cooperate with the main beam tube positioning block (7-1) to press and fix the main beam tube (2), and the other pressing workpiece clamps cooperate with the seat tube positioning block (8-2) and the seat tube limiting block (8-1) to press and fix the seat tube (3).