Electric tricycle seat cask slideway sleeve coaxial series positioning welding tool

Abstract

The utility model discloses a coaxial series positioning and welding tool for seat cask slide sleeves of an electric tricycle. The coaxial series positioning and welding tool comprises a bottom plate, a left supporting frame fixing mechanism, a right supporting frame fixing mechanism, a left slide sleeve assembly fixing mechanism and a right slide sleeve assembly fixing mechanism, wherein the left supporting frame fixing mechanism, the right supporting frame fixing mechanism, the left slide sleeve assembly fixing mechanism and the right slide sleeve assembly fixing mechanism are arranged on the bottom plate. The left slideway sleeve assembly and the right slideway sleeve assembly are fixed to the same bottom plate in the mode that three propelling air cylinders are connected in series and located, a second propelling air cylinder drives a second locating pin and a third locating pin to move at the same time, and space is saved while the coaxiality of the sleeve assemblies is guaranteed. The guide block is used for guaranteeing the coaxiality of the sleeve assembly and guiding of the positioning pin, and the stability of the product quality is effectively improved. The positioning pin and the guide block are close to the sleeve assembly, the problem that the positioning pin is driven to warp when the sleeve deforms in the welding process due to the fact that the distance in an original tool is long is solved, and deformation of welded parts caused by the fact that the sleeve is driven to move along with the positioning pin during discharging is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric tricycle technology, and in particular to a coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle. Background Technology

[0002] With the advancement of technology and the diversification of consumer demands, various innovative and multifunctional electric tricycles for carrying passengers have emerged on the market. The application of intelligent technology has made electric tricycles more user-friendly. In addition, models equipped with storage boxes, child seats, and high-performance silent motors have adapted to different usage scenarios and the needs of different groups of people, thus meeting a wider range of market demands.

[0003] The electric tricycle for passengers is smaller and makes better use of space. The seat bucket is designed with a sliding structure, which can effectively utilize the lower space and is more stable and durable than the original flip-top structure. However, the two sliding sleeves need to slide along the track, which requires higher parallelism in manufacturing. When welding the components, the requirement for parallelism of the seat bucket sliding sleeves is transformed into the requirement for coaxiality of individual components.

[0004] The existing design fixture welds the left and right symmetrical parts sequentially. It employs a dual-cylinder and dual-locating-pin structure, but the guide block of the locating pin only serves a limiting function and cannot meet the coaxiality positioning requirements. After welding, the sleeve deforms due to the locating pin, compromising coaxiality. The existing design fixture is an inverted structure, with the overall support block positioned too high above the base plate. Furthermore, the existing design fixture lacks a sleeve-based limiting structure, making it impossible to detect changes in sleeve length or length, and it moves axially along the locating pin, resulting in unstable positioning. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A coaxial series positioning and welding fixture for a seat bucket slide sleeve of an electric tricycle, characterized in that: it includes a base plate and a left support frame fixing mechanism, a right support frame fixing mechanism, a left slide sleeve assembly fixing mechanism, and a right slide sleeve assembly fixing mechanism disposed on the base plate;

[0008] The left support frame fixing mechanism includes a first support frame and a first rotary cylinder mounted on the base plate. The first support frame and the first rotary cylinder are used to fix the left support frame together.

[0009] The right support frame fixing mechanism includes a second support frame and a second rotary cylinder mounted on the base plate. The second support frame and the second rotary cylinder are used to fix the right support frame together.

[0010] The left slide sleeve assembly fixing mechanism includes a first propulsion cylinder, a second propulsion cylinder, a first positioning pin, a second positioning pin, a first guide block, and a second guide block. The first guide block and the second guide block are arranged opposite to each other and are provided with a first contour limit for placing the left slide sleeve assembly. The first positioning pin and the second positioning pin are slidably connected to the first guide block and the second guide block, respectively. The first propulsion cylinder and the second propulsion cylinder drive the first positioning pin and the second positioning pin, respectively.

[0011] The right slide sleeve assembly fixing mechanism includes a third propulsion cylinder, a third positioning pin, a fourth positioning pin, a third guide block, and a fourth guide block. The third and fourth guide blocks are arranged opposite to each other and are provided with a second contouring limiter for placing the right slide sleeve assembly. The third and fourth positioning pins are slidably connected to the third and fourth guide blocks, respectively. The second and third propulsion cylinders drive the third and fourth positioning pins, respectively. The first and second contouring limits are arranged in a straight line so that the left and right slide sleeve assemblies can be coaxially fixed.

[0012] Furthermore, the rear ends of the first positioning pin, the second positioning pin, the third positioning pin, and the fourth positioning pin are respectively connected to the first limiting block, the second limiting block, the third limiting block, and the fourth limiting block, and the first limiting block, the second limiting block, the third limiting block, and the fourth limiting block abut against the first guide block, the second guide block, the third guide block, and the fourth guide block.

[0013] Furthermore, the lower ends of the first and second contouring stops are provided with slag outlets.

[0014] Furthermore, the first contouring limit and the second contouring limit are respectively semi-circular structures that cooperate with the left slide sleeve assembly and the right slide sleeve assembly.

[0015] Furthermore, the left slide sleeve assembly fixing mechanism also includes a first clamping cylinder, and the right slide sleeve assembly fixing mechanism also includes a second clamping cylinder. The first clamping cylinder and the second clamping cylinder are respectively disposed on the side of the left slide sleeve assembly and the right slide sleeve assembly.

[0016] Furthermore, the first support frame and the second support frame are respectively provided with a first groove and a second groove, the shapes of the first groove and the second groove being respectively matched with the shapes of the left support frame and the right support frame.

[0017] Furthermore, the first support frame and the second support frame are each provided with six.

[0018] Furthermore, there are two of each of the first and second rotary cylinders.

[0019] Furthermore, a third rotary cylinder is also provided on the base plate, which can simultaneously fix the left support frame and the right support frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The guide block is used to ensure the coaxiality of the sleeve assembly and guide the locating pin, effectively improving the stability of product quality. The locating pin and the guide block are close to the sleeve assembly, avoiding the problem of the locating pin warping due to the distance between them in the original tooling when the sleeve deforms during welding. Moreover, the guide block will not cause the sleeve to move with the locating pin during unloading, thus preventing deformation of the welded parts.

[0022] 2. It adopts a forward mounting structure, with the support frame directly fixed to the base plate and at a very low height, so it will not deform due to welding stress and has good stability.

[0023] 3. The length of the slide sleeve can be limited by the distance between the guide blocks. The left and right support frames are welded on the same tooling, and the parts used are basically the same, which can improve the efficiency of mounting and welding.

[0024] 4. The left and right slide sleeve assemblies are fixed on the same base plate by three series of propulsion cylinders. The second propulsion cylinder drives the second and third positioning pins to move simultaneously, which saves space while ensuring the coaxiality of the sleeve assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a top view of the overall structure of an embodiment of the present utility model;

[0027] Figure 3 A schematic diagram showing the mating state of the first locating pin, the second locating pin, the first guide block, and the second guide block;

[0028] Figure 4 This is a schematic diagram showing the usage state of an embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the bucket seat assembly structure;

[0030] Wherein: 1-base plate, 2-first support frame, 3-first rotary cylinder, 4-left support frame, 5-second support frame, 6-second rotary cylinder, 7-right support frame, 8-first propulsion cylinder, 9-second propulsion cylinder, 10-first positioning pin, 11-second positioning pin, 12-first guide block, 13-second guide block, 14-first contouring limit, 15-left slide sleeve assembly, 16-third propulsion cylinder, 17-third positioning pin, 18-fourth positioning pin, 19-third guide block, 20-fourth guide block, 21-second contouring limit, 22-right slide sleeve assembly, 23-first limit block, 24-second limit block, 25-third limit block, 26-fourth limit block, 27-slag outlet, 28-first clamping cylinder, 29-second clamping cylinder, 30-first groove, 31-second groove, 32-third rotary cylinder. Detailed Implementation

[0031] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Figure 1 An embodiment of a coaxial series positioning and welding fixture for a seat bucket slide sleeve of an electric tricycle is shown, including a base plate 1 and a left support frame fixing mechanism, a right support frame fixing mechanism, a left slide sleeve assembly fixing mechanism, and a right slide sleeve assembly fixing mechanism disposed on the base plate 1.

[0036] The left support frame fixing mechanism includes a first support frame 2 and a first rotary cylinder 3 mounted on the base plate 1. The first support frame 2 and the first rotary cylinder 3 are used together to fix the left support frame 4.

[0037] The right support frame fixing mechanism includes a second support frame 5 and a second rotary cylinder 6 mounted on the base plate 1. The second support frame 5 and the second rotary cylinder 6 are used together to fix the right support frame 7.

[0038] The first support frame 2 and the second support frame 5 are each provided with six units. The first rotary cylinder 3 and the second rotary cylinder 6 are each provided with two units.

[0039] The left slide sleeve assembly fixing mechanism includes a first propulsion cylinder 8, a second propulsion cylinder 9, a first positioning pin 10, a second positioning pin 11, a first guide block 12, and a second guide block 13. The first guide block 12 and the second guide block 13 are arranged opposite to each other, and a first contouring limit 14 is provided on them for placing the left slide sleeve assembly 15. The first positioning pin 10 and the second positioning pin 11 are slidably connected to the first guide block 12 and the second guide block 13, respectively. The first propulsion cylinder 8 and the second propulsion cylinder 9 drive the first positioning pin and the second positioning pin 11, respectively.

[0040] The right slide sleeve assembly fixing mechanism includes a third propulsion cylinder 16, a third positioning pin 17, a fourth positioning pin 18, a third guide block 19, and a fourth guide block 20. The third guide block 19 and the fourth guide block 20 are arranged opposite to each other, and a second contouring limiter 21 is provided on them for placing the right slide sleeve assembly 22. The third positioning pin 17 and the fourth positioning pin 18 are slidably connected to the third guide block 19 and the fourth guide block 20, respectively. The second propulsion cylinder 9 and the third propulsion cylinder 19 drive the third positioning pin 17 and the fourth positioning pin 18, respectively. The first contouring limiter 14 and the second contouring limiter 21 are arranged in a straight line so that the left slide sleeve assembly 15 and the right slide sleeve assembly 22 can be fixed coaxially.

[0041] like Figure 2As shown, the rear ends of the first positioning pin 10 and the second positioning pin 11 are respectively connected to the first limiting block 23 and the second limiting block 24, which abut against the first guide block 12 and the second guide block 13, respectively. Similarly, the rear ends of the third positioning pin 17 and the fourth positioning pin 18 are respectively connected to the third limiting block 25 and the fourth limiting block 26, which abut against the third guide block 19 and the fourth guide block 20, respectively. The lower ends of the first contouring limiting block 14 and the second contouring limiting block 21 are provided with slag outlets 27. The first contouring limiting block 14 and the second contouring limiting block 21 are respectively semi-circular structures that cooperate with the left slide sleeve assembly 15 and the right slide sleeve assembly 22.

[0042] Preferably, the left slide sleeve assembly fixing mechanism further includes a first clamping cylinder 28, and the right slide sleeve assembly fixing mechanism further includes a second clamping cylinder 29. The first clamping cylinder 28 and the second clamping cylinder 29 are respectively disposed on the sides of the left slide sleeve assembly 15 and the right slide sleeve assembly 22. The first support frame and the second support frame 5 are respectively provided with a first groove 30 and a second groove 31, the shapes of which respectively match the shapes of the left support frame 4 and the right support frame 7. The base plate 1 is also provided with a third rotating cylinder 32, which can simultaneously fix the left support frame 4 and the right support frame 7.

[0043] The specific usage steps of the above embodiments are as follows:

[0044] Preparatory work for mounting: To improve welding efficiency, the sleeve, two nuts, and sleeve bracket have been welded into the left slide sleeve assembly 15 and the right slide sleeve assembly 22, respectively. Before mounting the workpiece, the first positioning pin 10, the second positioning pin 11, the third positioning pin 17, and the fourth positioning pin 18, driven by the contraction of the first propulsion cylinder 8, the second propulsion cylinder 9, and the third propulsion cylinder 16, create mounting space. At this time, the first limiting block 23, the second limiting block 24, the third limiting block 25, and the fourth limiting block 26 can restrict the first positioning pin 10, the second positioning pin 11, the third positioning pin 17, and the fourth positioning pin 18 to move along the cylinder axis without dislodging from the thickness range of the first guide block 12, the second guide block 13, the third guide block 19, and the fourth guide block 20.

[0045] Component mounting: Place the sleeve portions of the left slide sleeve assembly 15 and the right slide sleeve assembly 22 into the semi-circular first contouring limit 14 and the second contouring limit 21, respectively; place the left support frame 4 and the right support frame 7 into the first groove 30 and the second groove 31 on the top of the first support frame 2 and the second support frame 5, respectively.

[0046] Component clamping: The first propulsion cylinder 8, the second propulsion cylinder 9, and the third propulsion cylinder 16 drive the first positioning pin 10, the second positioning pin 11, the third positioning pin 17, and the fourth positioning pin 18 to move forward axially. The ends of the first positioning pin 10, the second positioning pin 11, the third positioning pin 17, and the fourth positioning pin 18 respectively enter the inner diameter of the sleeve of the left slide sleeve assembly 15 and the right slide sleeve assembly 22 for positioning. The second propulsion cylinder 9 drives the second positioning pin 11 and the third positioning pin 17 to move simultaneously, and one cylinder can complete the propulsion of two positioning pins at the same time. The first clamping cylinder 28 and the second clamping cylinder 29 clamp the sleeve support part from the sides of the left slide sleeve assembly 15 and the right slide sleeve assembly 22 respectively. The first rotating cylinder 3, the second rotating cylinder 6, and the third rotating cylinder 32 press the left support frame 4 and the right support frame 7 into the first groove 30 and the second groove 31 from above.

[0047] Component unloading: After all welds are completed, the first rotary cylinder 3, the second rotary cylinder 6, and the third rotary cylinder 32 are rotated and released. The first propulsion cylinder 8, the second propulsion cylinder 9, and the third propulsion cylinder 16 drive the first positioning pin 10, the second positioning pin 11, the third positioning pin 17, and the fourth positioning pin 18 to retract. The guide block can block the sleeve to facilitate the disengagement of the positioning pins. The positioning pins move backward and stop at the guide block. The limit block can ensure that the positioning pins are completely disengaged from the guide block's contour limit without falling off completely. If there is welding slag, after the component is removed, it will fall along the contour limit area to the welding slag outlet 27, without affecting the next component loading.

[0048] The final assembled electric tricycle seat bucket assembly is as follows: Figure 5 As shown, this ensures the parallelism of the two slide sleeves.

[0049] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle, characterized in that: It includes a base plate (1) and a left support frame fixing mechanism, a right support frame fixing mechanism, a left slide sleeve assembly fixing mechanism, and a right slide sleeve assembly fixing mechanism disposed on the base plate (1); The left support frame fixing mechanism includes a first support frame (2) and a first rotary cylinder (3) set on the base plate (1). The first support frame (2) and the first rotary cylinder (3) are used to fix the left support frame (4) together. The right support frame fixing mechanism includes a second support frame (5) and a second rotary cylinder (6) set on the base plate (1). The second support frame (5) and the second rotary cylinder (6) are used to fix the right support frame (7) together. The left slide sleeve assembly fixing mechanism includes a first propulsion cylinder (8), a second propulsion cylinder (9), a first positioning pin (10), a second positioning pin (11), a first guide block (12), and a second guide block (13). The first guide block (12) and the second guide block (13) are arranged opposite to each other and are provided with a first contour limit (14) for placing the left slide sleeve assembly (15). The first positioning pin (10) and the second positioning pin (11) are slidably connected to the first guide block (12) and the second guide block (13) respectively. The first propulsion cylinder (8) and the second propulsion cylinder (9) drive the first positioning pin (10) and the second positioning pin (11) respectively. The right slide sleeve assembly fixing mechanism includes a third propulsion cylinder (16), a third positioning pin (17), a fourth positioning pin (18), a third guide block (19), and a fourth guide block (20). The third guide block (19) and the fourth guide block (20) are arranged opposite to each other, and a second contouring limiter (21) is provided on them for placing the right slide sleeve assembly (22). The third positioning pin (17) and the fourth positioning pin (18) are slidably connected to the third guide block (19) and the fourth guide block (20), respectively. The second propulsion cylinder (9) and the third propulsion cylinder (16) drive the third positioning pin (17) and the fourth positioning pin (18), respectively. The first contouring limiter (14) and the second contouring limiter (21) are arranged in a straight line so that the left slide sleeve assembly (15) and the right slide sleeve assembly (22) can be coaxially fixed.

2. The coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle according to claim 1, characterized in that: The rear ends of the first positioning pin (10), the second positioning pin (11), the third positioning pin (17), and the fourth positioning pin (18) are respectively connected to the first limiting block (23), the second limiting block (24), the third limiting block (25), and the fourth limiting block (26). The first limiting block (23), the second limiting block (24), the third limiting block (25), and the fourth limiting block (26) abut against the first guide block (12), the second guide block (13), the third guide block (19), and the fourth guide block (20).

3. The coaxial series positioning and welding fixture for the electric tricycle seat bucket slide sleeve according to claim 1, characterized in that: The lower ends of the first contouring limiter (14) and the second contouring limiter (21) are provided with slag outlets (27).

4. The coaxial series positioning and welding fixture for the electric tricycle seat bucket slide sleeve according to claim 1, characterized in that: The first contouring limiter (14) and the second contouring limiter (21) are semi-circular structures that cooperate with the left slide sleeve assembly (15) and the right slide sleeve assembly (22), respectively.

5. The coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle according to claim 1, characterized in that: The left slide sleeve assembly fixing mechanism further includes a first pressing cylinder (28), and the right slide sleeve assembly fixing mechanism further includes a second pressing cylinder (29). The first pressing cylinder (28) and the second pressing cylinder (29) are respectively disposed on the sides of the left slide sleeve assembly (15) and the right slide sleeve assembly (22).

6. The coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle according to claim 1, characterized in that: The first support frame (2) and the second support frame (5) are respectively provided with a first groove (30) and a second groove (31), and the shapes of the first groove (30) and the second groove (31) are respectively matched with the shapes of the left support frame (4) and the right support frame (7).

7. The coaxial series positioning and welding fixture for the electric tricycle seat bucket slide sleeve according to claim 1, characterized in that: The first support frame (2) and the second support frame (5) are each provided with six.

8. The coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle according to claim 1, characterized in that: Two of each of the first rotary cylinder (3) and the second rotary cylinder (6) are provided.

9. The coaxial series positioning and welding fixture for the seat bucket slide sleeve of an electric tricycle according to claim 1, characterized in that: The base plate (1) is also equipped with a third rotary cylinder (32), which can simultaneously fix the left support frame (4) and the right support frame (7).

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