Automobile carbon tank welding tool

Abstract

The utility model provides an automobile carbon tank welding tool which comprises a lower clamping assembly and an upper clamping assembly, and a lower clamp comprises a fixed clamp and a movable clamp. A locking mechanism is arranged on the bottom plate and comprises a first limiting block, a second limiting block, a clamping block and a locking air cylinder, the first limiting block is fixed to the side wall of the movable clamp, and the second limiting block is fixed to the bottom plate and located on the movement path of the first limiting block; when the movable clamp moves to the inner limit position and forms a lower clamping area, the first limiting block makes contact with the second limiting block, the clamping block is installed at the output end of the locking air cylinder, the moving direction of the clamping block is perpendicular to the sliding direction of the movable clamp, and clamping holes allowing the first limiting block and the second limiting block to be clamped in and achieving locking are formed in the end of the clamping block. The automobile carbon tank welding tool is compact in structure, convenient to feed and discharge, high in clamping precision, stable and reliable in clamping, good in using effect and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to a tooling, in particular to a welding tooling for an automotive carbon canister. Background Art

[0002] The carbon canister is an important component on a vehicle, generally installed between the fuel tank and the engine. Its main function is to prevent fuel vapor from entering the atmosphere when the engine stops running, reducing air pollution. The fuel vapor will be stored in the carbon canister. When the motor vehicle starts again, the absorbed fuel vapor will be poured back into the intake air pipe, thus achieving the purposes of environmental protection and fuel saving. An active substance is used inside the carbon canister. When the engine is working and the solenoid valve is turned on, the engine adsorbs the fuel vapor and the active substance in the fuel tank into the intake air pipe where the vapor is inhaled. When the engine of the motor vehicle stops working or the solenoid valve is not turned on, the vapor in the fuel tank enters the activated carbon canister and is absorbed by the active substance.

[0003] In order to improve production efficiency and product quality, the connection between the cover body and the main body of the carbon canister is realized by vibration friction welding. In the prior art, affected by the fixture structure, the feeding efficiency and accuracy of the cover body and the main body are low, affecting the overall production efficiency and product quality. At the same time, the requirement for the clamping force of the cylinder is high, increasing the equipment cost and volume. Summary of the Utility Model

[0004] 【1】Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide a welding tooling for an automotive carbon canister with a compact structure, good clamping effect, stable and reliable use, and low manufacturing cost.

[0006] 【2】Technical Solutions for Solving the Problems

[0007] The utility model provides an automobile carbon canister welding tooling, which comprises a lower clamping assembly 1 and an upper clamping assembly 7 vertically and slidably arranged directly above the lower clamping assembly 1. An upper fixture is arranged at the lower end of the lower clamping assembly 1. The lower clamping assembly 1 comprises a bottom plate, and a lower fixture 2 is arranged at the upper end of the bottom plate. A clamping area for clamping the carbon canister is formed between the upper fixture and the lower fixture 2. The lower fixture comprises a fixed fixture fixed on the bottom plate and a movable fixture slidably arranged on the bottom plate. The movable fixture can move towards or away from the fixed fixture and can form a lower clamping area with the fixed fixture. A locking mechanism 5 for locking the movable fixture is arranged on the bottom plate. The locking mechanism 5 comprises a first limit block 51, a second limit block 52, a clamping block 53 and a locking cylinder 54. The first limit block 51 is fixed on the side wall of the movable fixture. The second limit block 52 is fixed on the bottom plate and located on the movement path of the first limit block. When the movable fixture moves to the inner extreme limit and forms the lower clamping area, the first limit block contacts the second limit block. The clamping block 53 is installed at the output end of the locking cylinder, and its moving direction is perpendicular to the sliding direction of the movable fixture. A clamping hole 530 capable of allowing the first limit block and the second limit block to be clamped and locked is formed at the end of the clamping block 53.

[0008] Further, there are two locking mechanisms 5, which are respectively arranged on both sides of the movable fixture.

[0009] Further, the two locking mechanisms 5 are asymmetrically arranged on both sides of the movable fixture.

[0010] Further, a first supporting surface is arranged on the side wall of the first limit block 51. The first supporting surface faces the second limit block 52 and is perpendicular to the moving direction of the movable fixture. A second supporting surface 52a facing the first limit block 51 and capable of fitting on the first supporting surface is arranged on the second limit block.

[0011] Further, first inclined guide surfaces are arranged on the side walls of the first limit block and the second limit block to form a trapezoidal structure. Second inclined guide surfaces capable of fitting on the first inclined guide surfaces are arranged on the side wall of the clamping hole.

[0012] Further, the included angle between the first inclined guide surface and the moving direction of the movable fixture is greater than or equal to 70 degrees and less than or equal to 85 degrees.

[0013] Further, the locking mechanism further includes a mounting seat 55 fixed on the base plate. A chute is provided on the mounting seat 55, and the length direction of the chute is perpendicular to the sliding direction of the movable fixture. The cross-sectional shape of the clamping block 53 is the same as that of the chute and is slidably fitted in the chute. The second limiting block 52 is fixed in the chute, and the locking cylinder 54 is fixed on the side wall of the mounting seat 55.

[0014] Further, the distance between the second limiting block 52 and the side wall of the movable fixture is less than or equal to 5 mm.

[0015] Further, a strip-shaped groove 550 is provided on the top surface of the mounting seat 55. Both ends of the strip-shaped groove penetrate to the outside of the mounting seat 55. A cover plate 56 is installed on the top surface of the strip-shaped groove to form the chute. A hole body 511 for the first limiting block to pass through is provided on the side wall at the end of the chute.

[0016] Further, a suction cup 84 for adsorbing the carbon canister cover is provided in the upper fixture, and the suction cup 84 is connected to an air extraction pump.

[0017] Further, the movable fixture includes a sliding plate 23 slidably fitted on the base plate through a guide rail 42, a movable fixture body 24 installed on the sliding plate 23, and a driving cylinder 3 connected to the sliding plate 23 and used to drive it to slide in the direction close to or away from the fixed fixture. The first limiting block is fixed on the side wall of the sliding plate 23.

[0018] 【3】Beneficial effects

[0019] The automotive carbon canister welding tooling of the present utility model is provided with a form of a fixed fixture and a movable fixture, which is convenient for placing the carbon canister, has a high loading and unloading efficiency, and improves the production efficiency; a suction cup is provided in the upper fixture, which is convenient for loading and fixing the cover body, and improves the assembly accuracy and efficiency; a locking mechanism is provided, which can lock and fix the movable fixture, avoid loosening of the movable clamping, improve the assembly welding accuracy and efficiency, has a high product quality, and is stable and reliable in use; a double limiting block structure is adopted, which can achieve precise positioning and can be used as a locking carrier for locking at the same time. The structure is compact, the volume is small, the positioning accuracy is high, and the locking effect is good; an inclined guide surface is provided, which can achieve automatic centering, runs reliably, and can avoid affecting locking due to errors; the asymmetric structure can achieve automatic compensation of errors and can further improve the locking force on the movable fixture. The locking is reliable and stable; the automotive carbon canister welding tooling of the present utility model has a compact structure, convenient loading and unloading, high clamping accuracy, stable and reliable clamping, good use effect, and low manufacturing cost. Description of the drawings

[0020] Figure 1 is a structural schematic diagram of the automotive carbon canister welding tooling of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of another angle of the welding tool for automobile carbon cans of the present utility model;

[0022] Figure 3 This is an exploded structural diagram of the welding tool for automobile carbon cans of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the upper fixture assembly of the welding tool for automobile carbon cans of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of the lower fixture assembly of the welding tool for automobile carbon cans of the present utility model;

[0025] Figure 6 This is a schematic structural diagram of the locking mechanism of the welding tool for automobile carbon cans of the present utility model;

[0026] Figure 7 This is an exploded structural diagram of the locking mechanism of the welding tool for automobile carbon cans of the present utility model. Specific embodiments

[0027] The following will introduce the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0028] Refer to Figures 1 - 7 , the present utility model provides a welding tool for automobile carbon cans, which includes a lower clamping assembly 1 and an upper clamping assembly. The upper clamping assembly is vertically and slidably matched directly above the lower clamping assembly 1. An upper fixture is provided at the lower end of the lower clamping assembly 1, and an upper clamping area (cavity) is provided on the upper fixture. The lower clamping assembly 1 includes a bottom plate, and a lower fixture 2 is provided at the upper end of the bottom plate. A lower clamping area (cavity) is provided on the lower fixture 2. After the upper fixture moves down to the lower limit position, a complete clamping area is formed between the upper clamping area of the upper fixture and the lower clamping area of the lower fixture 2, which can realize the clamping of the carbon can (including the body and the cover) to facilitate the welding of the carbon can.

[0029] Refer to Figure 4, the upper clamping assembly includes a top plate. A upper support plate 81 is detachably mounted on the bottom surface of the top plate by bolts. An upper fixture body 82 is fixed on the upper support plate 81. An upper clamping area (cavity) is formed on the upper fixture body. One or more suction cups 84 are provided in the upper clamping area. The suction cups are arranged downward and are used to adsorb the cover of the carbon canister, so as to realize the picking and fixing support of the cover. The suction cup 84 is connected to an air extraction pump and can form a negative pressure, thereby realizing the vacuum adsorption of the cover. To improve the structural reliability, a pressure plate 83 is further provided at the lower end of the top plate. There are two pressure plates which are symmetrically arranged on both sides of the upper support plate. The pressure plates press the upper support plate to realize the double fixation of the upper support plate, greatly improving its structural reliability. When it is necessary to replace upper molds of different specifications, the whole upper support plate can be replaced. The disassembly and installation are convenient and fast. At the same time, through the pressure plate 83, the connection reliability can be further improved and looseness can be avoided.

[0030] Refer to Figures 1 - 3 and Figure 5 , the lower fixture includes a bottom plate which is parallel to the top plate. A guide rod 121 (guide post) is provided between the bottom plate and the top plate. A guide sleeve 12 is provided on the bottom plate or on the top plate. The guide rod is sleeved in the guide sleeve, thereby realizing the sliding connection between the top plate and the bottom plate, that is, the top plate and the bottom plate can move towards each other or move away from each other. The bottom plate is detachably mounted on the machine base by bolts. Handles 13 are provided at both ends of the bottom plate, which are convenient for disassembly and replacement of lower fixtures of different specifications.

[0031] A fixed fixture and a movable fixture are provided on the bottom plate. Among them, the fixed fixture is fixed on the bottom plate, and the movable fixture is slidably fitted on the bottom plate. The movable fixture can move towards or away from the fixed fixture. Half clamping areas (cavities) which are arranged towards each other are provided on the fixed fixture and the movable fixture, and a complete lower clamping area can be formed between them and the fixed fixture.

[0032] The fixed fixture includes a fixed fixture seat 21 fixed on the bottom plate and a fixed fixture body 22 fixed on the fixed fixture seat. The movable fixture includes a slide plate 23 and a movable fixture body 24 fixed on the slide plate 23. Two mutually parallel guide rails 42 are provided on the bottom plate. Sliders are slidably fitted on the guide rails. The slide plate is fixed on the sliders and realizes the sliding fit. The slide plate (movable fixture) can slide towards or away from the fixed fixture to realize clamping or loosening. At the same time, a driving cylinder 3 is fixed on the bottom plate. The driving cylinder is parallel to the guide rails and is located between the two guide rails. Its output end is connected to the slide plate 23 and is used to drive the slide plate to slide towards or away from the fixed fixture.

[0033] In this application, a locking mechanism 5 is provided on the bottom plate and is used to lock the movable fixture. Refer to Figures 6 - 7, the locking mechanism 5 includes a first limit block 51, a second limit block 52, a clamping block 53 and a locking cylinder 54. The first limit block 51 is fixed on the side wall of the moving fixture. In this embodiment, it is fixed on the side wall of the slide plate. The second limit block 52 is fixed on the bottom plate and is located on the movement path of the first limit block. When the moving fixture moves to the inner extreme limit and forms a lower clamping area, the first limit block contacts the second limit block to limit the moving fixture. In this embodiment, a first supporting surface is provided on the side wall of the first limit block 51. The first supporting surface is a plane, facing the second limit block 52 and perpendicular to the moving direction of the moving fixture. At the same time, a second supporting surface 52a is provided on the second limit block. The second supporting surface 52a is also a plane, facing the first limit block 51 and can be attached to the first supporting surface, which can increase the contact surface between the first limit block and the second limit block, improve the supporting force and accuracy. The clamping block 53 is installed at the output end of the locking cylinder. The moving direction of the clamping block is perpendicular to the sliding direction of the moving fixture. A clamping hole 530 is opened at the end of the clamping block 53. The clamping hole can just make the first limit block and the second limit block in the contact (attachment) state snap in, so as to lock and fix the moving fixture.

[0034] In order to improve the locking accuracy, make the locking mechanism have a centering effect and compensate for errors. In this embodiment, first inclined guide surfaces are provided on the side walls of the first limit block and the second limit block, thus forming a trapezoidal structure. Refer to Figure 7 , the first inclined guide surface on the first limit block is arranged at one end facing away from the second limit block, and the first inclined guide surface on the second limit block is arranged at one end facing away from the first limit block. The inclination angles of the two first inclined guide surfaces are opposite, and the inclination angles are the same. After contact (attachment), an isosceles trapezoid is formed. In this embodiment, the angle between the first inclined guide surface and the moving direction of the moving fixture is greater than or equal to 70 degrees and less than or equal to 85 degrees. It has an automatic centering effect and a self-locking effect, and the locking effect is good.

[0035] The locking mechanism in this embodiment further includes a mounting base 55. The mounting base is integrally in a cuboid structure and is fixed on the bottom plate. A chute is formed on the mounting base 55. The length direction of the chute is perpendicular to the sliding direction of the movable fixture. The cross-sectional shape of the clamping block 53 is the same as that of the chute, and it is slidably fitted in the chute. In this embodiment, the cross-sections of the chute and the clamping block are both rectangular. The second limiting block 52 is fixed in the chute, and the locking cylinder 54 is fixed on the side wall of the mounting base 55. Its output end is connected to the clamping block and is used to drive the clamping block to approach or move away from the limiting block to achieve locking and unlocking. Specifically, a strip-shaped groove 550 is formed on the top surface of the mounting base 55. The length direction of the strip-shaped groove is perpendicular to the sliding direction of the movable fixture. Both ends of the strip-shaped groove penetrate to the outside of the mounting base 55. A cover plate 56 is installed on the open end of the top surface of the strip-shaped groove through bolts, thereby forming a chute. A hole 511 is formed on the side wall of the inner end (close to the movable fixture) of the chute, and the first limiting block can pass through the hole 511.

[0036] In this embodiment, the distance between the second limiting block 52 and the side wall of the movable fixture (slide plate) is less than or equal to 5 mm, which can reduce the force arm between the limiting blocks and improve the locking effect and operation accuracy.

[0037] In this application, there are two locking mechanisms 5, which are respectively arranged on both sides of the movable fixture. Preferably, the two locking mechanisms 5 are arranged asymmetrically on both sides of the movable fixture, that is, taking the moving direction of the movable fixture as the axis, the two locking mechanisms are arranged on different radial planes of the movable fixture, that is, the distances between them and the fixed fixture are different, which can improve the locking accuracy and reliability of the movable fixture.

[0038] The automobile carbon canister welding tooling of the present utility model is provided with the form of a fixed fixture and a movable fixture, which is convenient for placing the carbon canister, has high loading and unloading efficiency, and improves the production efficiency; a suction cup is arranged in the upper fixture, which is convenient for loading and fixing the cover body, and improves the assembly accuracy and efficiency; a locking mechanism is arranged, which can lock and fix the movable fixture, avoid loosening of the movable clamping, improve the assembly and welding accuracy and efficiency, has high product quality, and is stable and reliable in use; a double-limiting-block structure is adopted, which can achieve precise positioning and can be used as a locking carrier for locking at the same time. The structure is compact, the volume is small, the positioning accuracy is high, and the locking effect is good; an inclined guide surface is arranged, which can realize automatic centering, operate reliably, and can avoid affecting locking due to errors; the asymmetric structure can realize automatic compensation of errors and can further improve the locking force on the movable fixture, and the locking is reliable and stable; the automobile carbon canister welding tooling of the present utility model has a compact structure, convenient loading and unloading, high clamping accuracy, stable and reliable clamping, good use effect, and low manufacturing cost.

[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. An automobile carbon canister welding tool, characterized by: The invention comprises a lower clamping assembly and an upper clamping assembly vertically slidably mounted above the lower clamping assembly, an upper clamp being arranged at the lower end of the lower clamping assembly, the lower clamping assembly comprises a bottom plate, a lower clamp being arranged at the upper end of the bottom plate, a clamping area for clamping the carbon canister being formed between the upper clamp and the lower clamp; the lower clamp comprises a fixed clamp fixed on the bottom plate and a movable clamp slidably mounted on the bottom plate, the movable clamp being able to move in a direction approaching or away from the fixed clamp and forming a lower clamping area between the movable clamp and the fixed clamp; a locking mechanism for locking the movable clamp is arranged on the bottom plate, The locking mechanism includes a first limit block, a second limit block, a clamping block and a locking cylinder, the first limit block is fixed to the side wall of the movable clamp, the second limit block is fixed to the bottom plate and is located on the movement path of the first limit block, when the movable clamp moves to the inner limit position and forms a lower clamping area, the first limit block contacts the second limit block, the clamping block is installed at the output end of the locking cylinder, and its moving direction is perpendicular to the sliding direction of the movable clamp, and a clamping hole is provided at the end of the clamping block to accommodate the first limit block and the second limit block to be clamped in and achieve locking.

2. The automobile carbon canister welding tool as claimed in claim 1, characterized in that: There are two locking mechanisms, which are respectively arranged on two sides of the movable clamp.

3. The automobile carbon canister welding tool as claimed in claim 2, characterized in that: The two locking mechanisms are asymmetrically arranged on both sides of the movable clamp.

4. The automobile carbon canister welding tool as claimed in claim 1, characterized in that: The side wall of the first limit block is provided with a first supporting surface, the first supporting surface faces the second limit block and is perpendicular to the moving direction of the movable clamp, and the second limit block is provided with a second supporting surface facing the first limit block and capable of being attached to the first supporting surface.

5. The automobile carbon canister welding tool as claimed in claim 1, characterized in that: The side walls of the first limiting block and the second limiting block are provided with a first inclined guide surface to form a trapezoidal structure, and the side wall of the clamping hole is provided with a second inclined guide surface that can be attached to the first inclined guide surface.

6. The automobile carbon can welding tool as claimed in claim 5, characterized in that: An included angle between the first inclined guide surface and the moving direction of the movable clamp is greater than or equal to 70 degrees and less than or equal to 85 degrees.

7. The automobile carbon canister welding tool as claimed in claim 1, characterized in that: The locking mechanism also includes a mounting base fixed on the base plate, a slide groove is provided on the mounting base, the length direction of the slide groove is perpendicular to the sliding direction of the movable clamp, the cross-sectional shape of the clamping block is the same as the cross-sectional shape of the slide groove and is slidably fitted in the slide groove, the second limit block is fixed in the slide groove, and the locking cylinder is fixed on the side wall of the mounting base.

8. The automobile carbon canister welding tool as claimed in claim 7, characterized in that: The distance between the second limiting block and the side wall of the movable clamp is less than or equal to 5 mm.

9. The automobile carbon can welding tool as claimed in claim 7, characterized in that: A strip groove is provided on the top surface of the mounting seat, and both ends of the strip groove extend outside the mounting seat. A cover plate is installed on the top surface of the strip groove to form the slide groove, and a hole is provided on the end side wall of the slide groove to allow the first limit block to pass through.

10. The automobile carbon canister welding tool as claimed in claim 1, characterized in that: A suction cup for adsorbing the carbon canister cover is arranged in the upper clamp, and the suction cup is connected to an air pump.

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