A positioning device and welding system for welding the oil filling port of a motorcycle tank

Abstract

The present application belongs to the field of welding technology and specifically provides a positioning device and a welding system for welding the oil filling port of a motorcycle tank. The positioning device for welding the oil filling port of a motorcycle tank comprises a base, a turntable, a lifting cylinder and a clamp. The turntable is supported by the base, and the cylinder body of the lifting cylinder is supported by the turntable. The piston rod of the lifting cylinder extends vertically upward and is fixed coaxially with the shaft rod. The shaft rod is installed in a vertical rod sleeve, the upper end of the rod sleeve is fixed to a limit plate, and the lower end is fixed to the cylinder body of the lifting cylinder. A positioning sleeve is installed on the upper surface of the limit plate, the upper end of the shaft rod extends out of the rod sleeve, the positioning sleeve fixing sleeve is arranged on the upper end of the shaft rod, the clamp is connected to the drive assembly, the drive assembly is supported by the turntable, and a conical ring is installed at the clamp. The end with a larger diameter in the conical ring is fixed to the clamp, and the other end is suspended. The conical ring can move within a set range driven by the drive assembly to press the oil filling ring to the upper end through hole of the oil tank to be welded.

Description

Technical Field

[0001] The present application belongs to the field of welding technology, and specifically provides a positioning device and a welding system for welding a motorcycle fuel tank filling port. Background Art

[0002] The motorcycle fuel tank shell is stamped and then welded to the surrounding structure. A through-hole is provided on the upper end surface, through which an oil filling ring is inserted. The oil filling ring is fixed to the through-hole to form the oil filling port. The oil filling ring and the through-hole are first welded together, and then a tank lock is installed on the outside of the oil filling ring.

[0003] In the traditional welding process, the upper shell of the oil tank is first fixed on the workbench, and then the oil filling ring is crimped to a set depth in the through hole using a crimping head, so that there is a set height difference between the upper end of the oil filling ring and the through hole, and then welding is performed using welding equipment.

[0004] The inventor believes that in the above technical solution, the oil filling ring is only pressed down by the pressing joint, and there is no guide part to achieve effective guidance during the pressing process. As a result, after the oil filling ring is installed in the through hole, there is a deviation between its actual axis and the preset axis, which affects the subsequent welding quality and the installation of the fuel tank lock. Summary of the Invention

[0005] The object of the present invention is to provide a positioning device and a welding system for welding a motorcycle fuel tank filling port, so as to solve at least one of the above-mentioned technical problems.

[0006] In order to solve the above-mentioned problems in the prior art, the first aspect of the present invention provides a positioning device for welding the oil filling port of a motorcycle tank, comprising: a base, a turntable, a lifting cylinder and a clamp, wherein the base is used for supporting; the turntable is supported by the base, and the rotation axis of the turntable is arranged vertically. The cylinder body of the lifting cylinder is supported by the turntable, and the piston rod of the lifting cylinder extends vertically upward and is fixed coaxially with the shaft rod. The shaft rod is installed in a vertical rod sleeve, the upper end of the rod sleeve is fixed to the limit plate, and the lower end is fixed to the cylinder body of the lifting cylinder. A positioning sleeve is installed on the upper surface of the limit plate, and the upper end of the shaft rod extends out of the rod sleeve. The positioning sleeve fixing sleeve is arranged on the upper end of the shaft rod; the outer diameter of the positioning sleeve is equal to the inner diameter of the oil filling ring to be welded; the positioning member is used to realize the positioning of the oil tank shell to be welded at the turntable.

[0007] The gripper is connected to the drive assembly, which is supported by a turntable. A conical ring is installed at the gripper. The end with a larger diameter in the conical ring is fixed to the gripper, and the other end is suspended in the air. The conical ring can move within a set range driven by the drive assembly to press the oil filling ring to the upper through hole of the oil tank to be welded.

[0008] Furthermore, the upper end of the rod sleeve has a bottom plate, and the bottom plate and the limiting plate are detachably fixed to each other, so that the limiting plate and the positioning sleeve can be disassembled and assembled from the upper end of the shaft.

[0009] A second aspect of the present invention provides a motorcycle tank filler port welding system, comprising the motorcycle tank filler port welding positioning device of the first aspect.

[0010] Beneficial effects of one or more of the above technical solutions:

[0011] (1) The outer diameter of the positioning sleeve is the same as the inner diameter of the oil filling ring, which can realize the radial positioning of the oil filling ring before it is crimped to the through hole in the oil tank housing; and before the oil filling ring is pressed down to a set depth by the tapered ring, the positioning sleeve is always inside the oil filling ring, which can guide the tapered ring when it is pressed down, avoiding the axial deflection of the upper end of the oil filling ring caused by uneven downward pressure.

[0012] (2) A positioning sleeve is used to fix the sleeve at the upper end of the shaft, and the shaft can be raised and lowered under the drive of the piston rod of the lifting cylinder; when the positioning sleeve moves upward with the shaft, the positioning sleeve can extend upward from the oil tank shell of the oil filling port to be welded to install the positioning oil filling ring; when the oil filling ring is pressed down by the pressure of the cone ring, the positioning sleeve can be driven by the shaft to move downward to avoid the positioning sleeve interfering with the movement of the cone ring.

[0013] (3) The upper end of the rod sleeve is fixed to the limit plate, so that the limit plate can be used to limit the oil filling ring when it is pressed down by the cone ring, and the axial limit of the oil filling ring at the through hole of the oil tank shell can be achieved.

[0014] (4) The upper end of the rod sleeve has a bottom plate, which is detachably fixed to the limit plate. This arrangement allows the limit plate to be replaced to accommodate the welding of oil injection rings with different axial lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0016] Figure 1 This is an axonometric view of the overall structure in Example 1 of the present invention;

[0017] Figure 2 This is a side view of the overall structure of Example 1 of the present invention;

[0018] Figure 3 1 is a schematic structural diagram of the positioning head in Example 1 of the present invention;

[0019] Figure 4 This is a front view of the overall structure of Example 1 of the present invention when in use;

[0020] Figure 5 is a side view of the overall structure of Example 1 of the present invention when in use;

[0021] Figure 61 is an axonometric diagram of a welding robot and a protective cover in Example 2 of the present invention;

[0022] Figure 7 It is a schematic diagram of the cooperation between the oil tank housing and the oil filling ring in the related technical solution;

[0023] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of part A.

[0024] Reference numerals list: 1, protective cover; 2, welding manipulator; 3, working space; 4, guide groove; 5, control button; 6, positioning head; 7, turntable; 8, support base; 9, lifting cylinder; 9A, positioning sleeve; 10, cone ring; 11, clamping hand; 12, pull rod; 14, mounting plate; 16, tensioning cylinder; 17, extension plate; 18, plug column; 19, base; 20, storage cabinet; 21, lifting cylinder; 22, mounting frame; 23, oil tank shell; 23A, connecting hole; 24, oil filling ring; 241, oil filling ring body; 242, vertical section; 243, cone section;

[0025] 601, rod sleeve; 602, rotating pin; 603, limit plate; 604, bushing; 605, pressure cover; 606, locking nut; 607, threaded section; 608, shaft; 609, bolt; 610, base plate. DETAILED DESCRIPTION

[0026] Those skilled in the art should understand that the embodiments described below are merely preferred embodiments of the present application and do not imply that the present application can only be implemented through these preferred embodiments. These preferred embodiments are merely used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Based on the preferred embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should still fall within the scope of protection of the present application.

[0027] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer" that indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as a limitation on this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] Example 1

[0030] like Figure 7 As shown in FIG. 2 , the oil tank shell 23 and the corresponding oil filling ring 24 to be welded in this embodiment are shown. After the oil filling ring 24 is welded to the through hole of the oil tank shell 23 , an oil filling port structure is formed.

[0031] like Figure 8 As shown, the outer contour of the oil filling ring 24 is annular as a whole, including the oil filling ring body 241 and the bending section inside it, the bending section is specifically a vertical section 242 and a tapered section 243. Figure 8 As can be seen in the figure, the oil tank housing 23 is folded inward a certain distance at the through-hole, thereby forming a positioning ring with a relatively short radial length. Due to the difficulty of manufacturing, this positioning ring is not long enough in the circumferential direction to effectively limit the oil filling ring 24. Before welding is completed, the oil filling ring 24 may still deflect, causing the oil filling ring 24 to misalign with the central axis of the through-hole.

[0032] In order to solve the above problems, Figure 1-Figure 5 As shown, this embodiment provides a positioning device for welding the oil filling port of a motorcycle tank, comprising a base 19, a turntable 7, a lifting cylinder 9, and a clamp 11. The base 19 is used for support; the turntable 7 is supported by the base 19, and the rotation axis of the turntable 7 is arranged vertically. The cylinder body of the lifting cylinder 9 is supported by the turntable 7, and the piston rod of the lifting cylinder 9 extends vertically upward and is fixed coaxially with the shaft rod 608. The shaft rod 608 is installed in a vertical rod sleeve 601. The upper end of the rod sleeve 601 is fixed to the limit plate 603, and the lower end is fixed to the cylinder body of the lifting cylinder 9. A positioning sleeve 9A is installed on the upper surface of the limit plate 603. The upper end of the shaft rod 608 extends out of the rod sleeve 601, and the positioning sleeve 9A is fixedly sleeved on the upper end of the shaft rod 608. The gripper 11 is connected to the drive assembly, which is supported by the turntable 7. A conical ring 10 is mounted on the gripper 11. The larger end of the conical ring 10 is fixed to the gripper 11, while the other end is suspended. Driven by the drive assembly, the conical ring 10 can move within a set range to press the oil filling ring 24 against the upper through-hole of the oil tank to be welded. The outer diameter of the positioning sleeve 9A is equal to the inner diameter of the oil filling ring 24 to be welded. The positioning member is used to position the oil tank shell 23 to be welded on the turntable 7.

[0033] In order to make up for the vertical size difference of the jacking cylinder 9, a support base 8 is fixed to the turntable 7 in this embodiment, and the cylinder body of the jacking cylinder 9 is fixed to the support base 8.

[0034] As mentioned above, the turntable 7 is supported by the base 19 , and the rotation driving component of the turntable 7 can be installed inside the base 19 , with the rotation axis of the turntable 7 extending vertically downward into the base 19 .

[0035] In this embodiment, the gripper 11 comprises two parallel rods with a connecting rod perpendicular to the rods mounted between them, forming a structure similar to a U-shaped rod. An ear plate is fixed to the outer side of the larger diameter end of the cone ring 10, and the upper end of the ear plate is fixed to the rods. This arrangement allows the gripper 11 to be higher than the upper end surface of the cone ring 10 as a whole, and the gripper 11 does not affect the downward pressing process of the cone ring 10.

[0036] In this embodiment, the driving assembly of the gripper 11 can be a robot, which can be directly fixed by using the middle part of the connecting rod between the robot and the gripper 11.

[0037] In order to facilitate the installation of the limit plate 603, in this embodiment, the upper end of the rod sleeve 601 has a bottom plate 610, and the bottom plate 610 and the limit plate 603 are detachably fixed, so that the limit plate 603 and the positioning sleeve 9A can be disassembled and assembled from the upper end of the shaft 608. Figure 4 、 5 As shown, after the outer shell of the oil tank is installed on the turntable 7 and positioned and fixed using the corresponding positioning components, the limit plate 603 can limit the depth of the lower end of the oil filling ring 24 extending into the inner cavity of the oil tank. By replacing pressure plates of different thicknesses, the limit stop of the oil filling ring 24 of different lengths can be adapted.

[0038] As a specific structural form, such as Figure 3 As shown, base plate 610 comprises a base plate 610 body with connecting lugs on either side, where corresponding rotating pins 602 are rotatably mounted. A bushing 604 is positioned between positioning sleeve 9A and shaft 608. The upper end of shaft 608 has a threaded section 607, which is covered by a gland. A lock nut 606 is mounted on the upper end of the gland. Positioning sleeve 9A is secured to shaft 608 and bushing 604 via screws. The positioning sleeve, gland, and bushing together form positioning head 6, which rises and falls synchronously with the shaft.

[0039] In this embodiment, the central axis of the piston rod in the lifting cylinder 9 coincides with the rotation axis of the turntable 7, and the drive assembly is mounted on the edge of the turntable 7. This arrangement ensures that the central axis of the lifting cylinder 9 and the positioning sleeve 9A does not change during the rotation of the turntable 7. Even if the position of the external welding gun does not change, welding can be completed along the annular contour to the through-hole of the oil filling ring 24 and the oil tank housing 23.

[0040] In this embodiment, the drive assembly includes a mounting frame 22, to which is fixed a lifting cylinder 21 with a guide rod. The piston rod of the lifting cylinder 21 faces vertically upward and is fixed to the mounting plate 14. A pull rod 12 is rotatably mounted on the mounting plate 14. One end of the pull rod 12 is fixed to the clamping hand 11, and the pull rod 12 can rotate relative to the pull rod 12 under the drive of the drive member. Before installing the oil ring 24 on the positioning sleeve 9A, the piston rod of the lifting cylinder 21 is extended upward so that the cone ring 10 is vertically much higher than the oil ring 24. The drive member then drives the pull rod 12 to rotate, so that the cone ring 10 is also moved away from the positioning sleeve 9A in the horizontal direction, completely exposing the positioning sleeve 9A. At this time, the cone ring 10 does not interfere with the positioning sleeve 9A passing through the through hole in the oil tank housing 23 and the process of installing the oil ring 24 on the outside of the positioning sleeve 9A.

[0041] In this embodiment, the driving member includes a tensioning cylinder 16 , a cylinder body of the tensioning cylinder 16 is fixed to the mounting plate 14 , a piston rod end of the tensioning cylinder 16 is fixed to the flexible rod, and the flexible rod is hinged to the other end of the pull rod 12 .

[0042] In some other embodiments, the driving member can be a motor, the output shaft of the motor is directly fixed to the rotating shaft at the pull rod 12, the rotating shaft is fixed to one of the pull rod 12 or the mounting plate 14, and the motor casing is fixed to the other of the pull rod 12 or the mounting plate 14.

[0043] In this embodiment, the positioning member comprises a vertical, upward-facing post 18 mounted on the top surface of the turntable 7. The post 18 can be inserted into the connection hole 23A at the front end of the fuel tank to be welded. The positioning member may also include a base plate 610 and a pressure plate. The outer edges of the base plate 610 and the pressure plate contact the inner wall of the fuel tank shell 23 to achieve the desired position. If the fuel tank shell is larger than the turntable, an extension plate 17 is installed on the turntable to secure the post 18.

[0044] In this embodiment, rotating pins 602 are respectively installed on both sides of the base plate 610, and a rotating sleeve is provided on the outer sleeve of the rotating pin 602, which is fixed to the lower end of the bolt 609. Slots are respectively provided on both sides of the limiting plate 603. The bolt 609 can be rotated along the rotating pin 602 to be embedded in the slot, and a nut can be installed at the bolt 609 to achieve locking after the bolt 609 is embedded in the slot.

[0045] As another detachable fixing method of the limiting plate 603 and the bottom plate 610, corresponding screw holes are respectively provided on the bottom plate 610 and the limiting plate 603, and locking bolts are passed through the screw holes.

[0046] In this embodiment, the profile of the lower end surface of the cone ring 10 is the same as the profile of the upper end surface of the oil filling ring 24 to be welded.

[0047] Working principle: When using this device, first use the driving assembly to drive the cone ring 10 and the clamping hand 11 away from the positioning sleeve 9A; then install the oil tank shell 23 on the turntable 7, penetrate the positioning sleeve 9A through the through hole of the oil tank shell 23, and the plug 18 passes through the connecting hole 23A of the oil tank shell 23, and the oil tank shell 23 is positioned on the turntable 7.

[0048] Then the positioning sleeve 9A is lifted by the lifting cylinder 9 and moves upward to the limit position;

[0049] An oil filling ring 24 is sleeved on the outside of the positioning sleeve 9A. The lower end of the oil filling ring 24 is in contact with the upper end surface of the through hole at this time. Then the driving assembly is used to drive the cone ring 10 to press down the oil filling ring 24. In the process of pressing down the oil filling ring 24, the positioning sleeve 9A is synchronously lowered under the drive of the jacking cylinder until the lower end of the oil filling ring 24 stops at the limit plate 603. At this time, the oil filling ring 24 is installed in place.

[0050] Then the cone ring 10 and the clamping hand 11 are reset, and welding equipment is used to complete the welding between the oil filling ring 24 and the oil tank shell 23.

[0051] Example 2

[0052] like Figure 6 As shown, this embodiment provides a motorcycle tank filling port welding system, including a protective cover 1, a welding robot 2 and the motorcycle tank filling port welding positioning device in Example 1. A working space 3 for installing the motorcycle tank filling port welding positioning device is formed in the protective cover 1, and the welding robot 2 is also installed in the working space 3.

[0053] Specifically, the support base of the welding robot 2 is located on one side of the base 19 in Example 1. The front of the protective cover 1 has a rolling door, and the door frame has a guide groove 4 for the rolling door. A control button 5 is provided on the front side of the protective cover 1 for controlling the start and stop of the welding robot 2 and the drive components.

[0054] In embodiment 1, a storage cabinet 20 is provided on one side of the base 19 , and a plurality of oil filling rings 24 are provided in the storage cabinet 20 for use.

[0055] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments described above. However, it is easy for those skilled in the art to understand that the scope of protection of the present application is not limited to the above preferred embodiments. Without departing from the technical principles of the present application, those skilled in the art may split and combine the technical solutions in the above preferred embodiments, and may also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the scope of protection of the present application.

Claims

1. A positioning device for welding the oil filling port of a motorcycle tank, characterized in that: include: A base, which is used to achieve support; a turntable supported by a base, wherein the rotation axis of the turntable is vertically arranged; A lifting cylinder, whose cylinder body is supported by a turntable, a piston rod of the lifting cylinder vertically extending upward and fixed coaxially with a shaft rod, the shaft rod being installed in a vertical rod sleeve, the upper end of the rod sleeve being fixed to a limit plate, and the lower end being fixed to the cylinder body of the lifting cylinder, a positioning sleeve being installed above the limit plate, the upper end of the shaft rod extending out of the rod sleeve, the positioning sleeve fixing sleeve being arranged at the upper end of the shaft rod, the outer diameter of the positioning sleeve being equal to the inner diameter of the oil filling ring to be welded; A gripper connected to a drive assembly supported by a turntable, a conical ring detachably mounted on the gripper, the larger diameter end of the conical ring being fixed to the gripper, and the other end being suspended in the air, the conical ring being able to move within a set range driven by the drive assembly to press the oil filling ring against the upper through hole of the oil tank to be welded; The positioning piece is used to position the oil tank shell to be welded on the turntable.

2. The motorcycle tank oil filling port welding positioning device according to claim 1, characterized in that: The upper end of the rod sleeve is provided with a bottom plate, and the bottom plate and the limiting plate are detachably fixed to each other, so that the limiting plate and the positioning sleeve can be disassembled and assembled from the upper end of the shaft.

3. The motorcycle tank oil filling port welding positioning device according to claim 1, characterized in that: The central axis of the piston rod in the jacking cylinder coincides with the rotation axis of the turntable, and the driving assembly is installed at the edge of the turntable.

4. The motorcycle tank oil filling port welding positioning device according to claim 1, characterized in that: The driving assembly includes a mounting frame, on which a lifting cylinder with a guide rod is fixed, the piston rod of the lifting cylinder is vertically upward and fixed to the mounting plate, a pull rod is rotatably installed on the mounting plate, one end of the pull rod is fixed to the clamp, and the pull rod can rotate relative to the pull rod under the drive of the driving member.

5. The motorcycle tank oil filling port welding positioning device according to claim 4, characterized in that: The driving member includes a tensioning cylinder, a cylinder body of the tensioning cylinder is fixed to the mounting plate, an end of a piston rod of the tensioning cylinder is fixed to a flexible rod, and the flexible rod is hinged to the other end of the pull rod.

6. The motorcycle tank oil filling port welding positioning device according to claim 1, characterized in that: The positioning member comprises a vertically upward plug post mounted on the upper surface of the turntable and used for plugging into a connection hole of the oil tank to be welded.

7. The motorcycle tank oil filling port welding positioning device according to claim 2, characterized in that: Rotating pins are respectively installed on both sides of the base plate, and a rotating sleeve is provided on the outer sleeve of the rotating pin. The rotating sleeve is fixed to the lower end of the bolt, and slots are respectively provided on both sides of the limit plate. The bolt can be rotated along the rotating pin to be embedded in the slot, and a nut can be installed on the bolt to achieve locking after the bolt is embedded in the slot.

8. The motorcycle tank oil filling port welding positioning device according to claim 1, characterized in that: The lower end surface profile of the cone ring is the same as the upper end surface profile of the oil filling ring to be welded.

9. A motorcycle fuel tank filling port welding system, characterized in that: The invention comprises a positioning device for welding a fuel filling port of a motorcycle tank as claimed in any one of claims 1 to 8.

10. The motorcycle fuel tank filling port welding system according to claim 9, characterized in that: It also includes a protective cover and a welding manipulator. A working space for installing the positioning device for welding the oil filling port of the motorcycle tank is formed in the protective cover; and the welding manipulator is installed in the working space.

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