A welding and positioning fixture for assembling the upper and lower shells of a motorcycle fuel tank

Abstract

This utility model relates to the field of motorcycle assembly technology, specifically disclosing a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank. It includes a supporting base plate, a first bracket, a second bracket, a third bracket, a pneumatic telescopic cylinder, a lower shell mold base, a manual valve, and a manual push block. Two sets of first brackets are fixedly connected to the supporting base plate, and the second bracket is also fixedly connected to the supporting base plate. Each set of manual push blocks is fixedly connected to the corresponding first and second brackets, and the third bracket is fixedly connected to the supporting base plate. The pneumatic telescopic cylinder is fixedly connected to the third bracket. The lower shell mold base is fixedly connected to the output end of the pneumatic telescopic cylinder and is located at the lower end of the cylinder. The manual valve is fixedly connected to the supporting base plate and is located at the upper end of the base plate. The fixture features a simple structure, convenient operation, high positioning stability, and is less prone to misalignment between the upper and lower shells during welding, ensuring reliable positioning.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle assembly technology, and in particular to a welding and positioning fixture for assembling the upper and lower shells of a motorcycle fuel tank. Background Technology

[0002] Currently, the fuel tank is a component in motorcycles used to carry fuel. In motorcycles, the fuel tank is generally located at the front of the frame and is usually an external type. That is, the upper outer surface of the fuel tank is directly exposed to the air and becomes part of the vehicle's shape. This simplifies the structure, increases the fuel tank volume, and saves costs. Motorcycle fuel tanks are usually welded after being measured and marked manually, which has the disadvantages of inconvenience and low efficiency.

[0003] The prior art CN205571788U provides a welding fixture for a motorcycle internal fuel tank, including a welding base, a positioning structure for welding the fuel tank on the welding base to achieve positioning of the fuel tank body in the installation state, and a welding positioning frame. The front of the welding positioning frame has a welding positioning ring with an inner diameter matching the outer diameter of the fuel tank body's oil inlet. The rear of the welding positioning frame has a downwardly positioned welding rear positioning post with a positioning protrusion at its lower end corresponding to the rear mounting hole of the fuel tank body. The welding positioning frame also has a pair of welding front mounting lug hole positioning posts located on both front sides corresponding to a pair of front mounting lug holes of the fuel tank, a pair of welding middle mounting lug hole positioning posts located on both middle sides corresponding to a pair of middle mounting lug holes of the fuel tank, and a pair of rear mounting lug hole positioning posts located on both rear sides corresponding to a pair of rear mounting lug holes of the fuel tank.

[0004] However, in the existing technology, the clamping firmness of the upper and lower covers of the motorcycle fuel tank is insufficient during the welding process, which may lead to displacement and misalignment during the welding process. Utility Model Content

[0005] The purpose of this utility model is to provide a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank, which aims to solve the technical problem that the clamping firmness of the upper and lower covers of the motorcycle fuel tank is insufficient during the welding process, which leads to displacement and misalignment during the welding process.

[0006] To achieve the above objectives, this utility model employs a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank, comprising a supporting base plate, a first bracket, a second bracket, a third bracket, a pneumatic telescopic cylinder, a lower shell mold base, a manual valve, and a manual push block. There are two sets of first brackets, each fixedly connected to the supporting base plate and located at the upper end of the supporting base plate. The second bracket is fixedly connected to the supporting base plate and located at the upper end of the supporting base plate. There are multiple sets of manual push blocks, each fixedly connected to a corresponding first bracket and a corresponding second bracket and located at the upper end of the corresponding first and second brackets. The third bracket is fixedly connected to the supporting base plate and located at the upper end of the supporting base plate. The pneumatic telescopic cylinder is fixedly connected to the third bracket and located on one side of the third bracket. The lower shell mold base is fixedly connected to the output end of the pneumatic telescopic cylinder and located at the lower end of the pneumatic telescopic cylinder. The manual valve is fixedly connected to the supporting base plate and located at the upper end of the supporting base plate.

[0007] The supporting base plate includes a base plate, a first upright plate, a second upright plate, and a positioning platform. The first upright plate is fixedly connected to the base plate and is located at the upper end of the base plate. The second upright plate is fixedly connected to the base plate and is located at the upper end of the base plate. The positioning platform is fixedly connected to the base plate and is located at the upper end of the base plate, and the positioning platform is located between the first upright plate and the second upright plate.

[0008] The supporting base plate further includes a first stand and a second stand. There are multiple sets of the first stand, each set of the first stand is fixedly connected to the base plate and is located at the upper end of the base plate. There are multiple sets of the second stand, each set of the second stand is fixedly connected to the base plate and is located at the upper end of the base plate.

[0009] The third support includes a vertical tube, a horizontal tube, and a mounting plate. There are two sets of vertical tubes, which are fixedly connected to the support base plate and located at the upper end of the support base plate. The horizontal tube is fixedly connected to the two sets of vertical tubes and located at the upper end of the two sets of vertical tubes. The mounting plate is fixedly connected to the horizontal tube and located at the upper end of the horizontal tube.

[0010] Each set of manual push blocks includes a mounting base, a positioning rod, a film, a push rod, and a connecting arm. The push rod is rotatably connected to the mounting base and located at the upper end of the mounting base. The push rod is also slidably connected to the mounting base and embedded inside the mounting base. There are two sets of connecting arms. The two ends of each set of connecting arms are rotatably connected to the push rod and the positioning rod, respectively, and are located on both sides of the positioning rod and the push rod. The film is fixedly connected to the positioning rod and located at one end of the positioning rod.

[0011] This utility model discloses a welding and positioning fixture for assembling the upper and lower shells of a motorcycle fuel tank. A supporting base plate supports and fixes the first, second, and third brackets. The third bracket is used to install and fix the pneumatic telescopic cylinder. The lower shell mold base is placed at the output end of the pneumatic telescopic cylinder. A hand-operated valve is connected to the pneumatic telescopic cylinder via an air pipe, and the hand-operated valve controls the extension and retraction of the pneumatic telescopic cylinder. In use, the upper shell is placed on the supporting base plate and adjusted to a suitable position. Then, the manual push blocks on both sides of the upper shell are pushed to clamp and position the upper shell. The lower shell is then placed over the upper shell, and the manual push block at the end is pushed to limit the end of the lower shell. Rotating the hand-operated valve controls the extension of the pneumatic telescopic cylinder, causing the lower shell mold base to press against the lower shell, thus completing the positioning of the upper and lower shells for welding. This structure is simple, easy to operate, and has high positioning stability, preventing misalignment between the upper and lower shells during welding, ensuring reliable positioning. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank according to this utility model.

[0014] Figure 2 This is a schematic diagram of the manual push block of this utility model.

[0015] Figure 3 This is a schematic diagram of the clamping structure of a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank, according to this utility model.

[0016] 101-First bracket, 102-Second bracket, 103-Pneumatic telescopic cylinder, 104-Lower shell mold base, 105-Hand valve, 106-Base plate, 107-First upright plate, 108-Second upright plate, 109-Positioning platform, 110-First upright frame, 111-Second upright frame, 112-Upright pipe, 113-Horizontal pipe, 114-Mounting plate, 115-Mounting base, 116-Positioning rod, 117-Film, 118-Push rod, 119-Connecting arm. Detailed Implementation

[0017] Please see Figures 1 to 3 This utility model provides a welding and positioning fixture for the upper and lower shells of a motorcycle fuel tank, including a support base plate, a first bracket 101, a second bracket 102, a third bracket, a pneumatic telescopic cylinder 103, a lower shell mold base 104, a manual valve 105, and manual push blocks. There are two sets of first brackets 101, each fixedly connected to the support base plate and located at the upper end of the support base plate. The second bracket 102 is fixedly connected to the support base plate and located at the upper end of the support base plate. There are multiple sets of manual push blocks, each set of which is connected to the upper and lower shells of the fuel tank. The first bracket 101 and the second bracket 102 are fixedly connected and located at the upper ends of the corresponding first bracket 101 and second bracket 102, respectively. The third bracket is fixedly connected to the support base plate and located at the upper end of the support base plate. The pneumatic telescopic cylinder 103 is fixedly connected to the third bracket and located on one side of the third bracket. The lower housing mold base 104 is fixedly connected to the output end of the pneumatic telescopic cylinder 103 and located at the lower end of the pneumatic telescopic cylinder 103. The manual valve 105 is fixedly connected to the support base plate and located at the upper end of the support base plate.

[0018] In this embodiment, the first bracket 101, the second bracket 102, and the third bracket are supported and fixed by the supporting base plate. The third bracket is used to install and fix the pneumatic telescopic cylinder 103. The lower housing mold base 104 is placed at the output end of the pneumatic telescopic cylinder 103. The manual valve 105 is connected to the pneumatic telescopic cylinder 103 through an air pipe. The manual valve 105 controls the extension and retraction of the pneumatic telescopic cylinder 103. In use, the upper housing is placed on the supporting base plate and adjusted to a suitable position. Then, the manual push blocks on both sides of the upper housing are pushed to clamp and position the two sides of the upper housing. Subsequently, the lower housing is placed on the upper end of the upper housing, and the manual push block at the end is pushed to limit the end of the lower housing. The manual valve 105 is rotated to control the extension of the pneumatic telescopic cylinder 103, so that the lower housing mold base 104 squeezes the lower housing, thereby completing the positioning of the upper and lower housings and then welding can be performed.

[0019] Furthermore, the supporting substrate includes a base plate 106, a first upright plate 107, a second upright plate 108, and a positioning platform 109. The first upright plate 107 is fixedly connected to the base plate 106 and is located at the upper end of the base plate 106. The second upright plate 108 is fixedly connected to the base plate 106 and is located at the upper end of the base plate 106. The positioning platform 109 is fixedly connected to the base plate 106 and is located at the upper end of the base plate 106, and the positioning platform 109 is located between the first upright plate 107 and the second upright plate 108.

[0020] In this embodiment, the base plate 106 supports and fixes the first upright plate 107, the second upright plate 108 and the positioning platform 109. At the same time, the combination of the first upright plate 107 and the second upright plate 108 is used to position the upper housing. During positioning, the oil filling port of the upper housing is embedded in the positioning platform 109, and the positioning platform 109 realizes the positioning of the upper housing.

[0021] Furthermore, the supporting base plate also includes a first support frame 110 and a second support frame 111. There are multiple sets of the first support frames 110. Each set of the first support frames 110 is fixedly connected to the base plate 106 and is located at the upper end of the base plate 106. There are multiple sets of the second support frames 111. Each set of the second support frames 111 is fixedly connected to the base plate 106 and is located at the upper end of the base plate 106.

[0022] In this embodiment, the first support frame 110 and the second support frame 111 are respectively disposed on the upper end of the base plate 106. The first support frame 110 and the second support frame 111 respectively provide positioning support for the periphery of the upper shell to ensure the installation stability of the upper shell.

[0023] Furthermore, the third support includes a vertical tube 112, a horizontal tube 113, and a mounting plate 114. There are two sets of vertical tubes 112, which are respectively fixedly connected to the support base plate and located at the upper end of the support base plate. The horizontal tube 113 is fixedly connected to the two sets of vertical tubes 112 and located at the upper end of the two sets of vertical tubes 112. The mounting plate 114 is fixedly connected to the horizontal tube 113 and located at the upper end of the horizontal tube 113.

[0024] In this embodiment, the two sets of vertical pipes 112 are used to install and fix the horizontal pipe 113, and the horizontal pipe 113 is used to install the mounting plate 114. The mounting plate 114 is used to support and fix the pneumatic telescopic cylinder 103, so that the pneumatic telescopic cylinder 103 can install the lower housing mold base 104.

[0025] Furthermore, each set of manual push blocks includes a mounting base 115, a positioning rod 116, a film 117, a push rod 118, and a connecting arm 119. The push rod 118 is rotatably connected to the mounting base 115 and is located at the upper end of the mounting base 115. The push rod 118 is slidably connected to the mounting base 115 and is embedded inside the mounting base 115. There are two sets of connecting arms 119. The two ends of each set of connecting arms 119 are rotatably connected to the push rod 118 and the positioning rod 116, respectively, and are located on both sides of the positioning rod 116 and the push rod 118. The film 117 is fixedly connected to the positioning rod 116 and is located at one end of the positioning rod 116.

[0026] In this embodiment, the mounting base 115 is installed on the upper end of the first bracket 101 or the second bracket 102. In use, the push rod 118 is pushed towards the end close to the positioning rod 116. Under the action of the connecting arm 119, the positioning rod 116 is pushed closer to the oil tank, pushing the film 117 to contact the oil tank, thereby positioning the oil tank. At the same time, the film 117 can avoid scratching the surface of the oil tank, playing a protective role. In addition, the film 117 also has an effective anti-slip effect, improving the positioning stability of the oil tank.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A motorcycle fuel tank upper and lower shell combined welding positioning tool, characterized in that, It comprises a support base plate, a first support, a second support, a third support, a pneumatic telescopic cylinder, a lower shell mold base, a hand valve and a manual push block, the number of the first support is two groups, two groups of the first support are respectively fixedly connected with the support base plate and are located at the upper end of the support base plate, the second support is fixedly connected with the support base plate and is located at the upper end of the support base plate, the number of the manual push block is multiple groups, each group of the manual push block is respectively fixedly connected with the corresponding first support and the second support and is located at the upper end of the corresponding first support and the second support, the third support is fixedly connected with the support base plate and is located at the upper end of the support base plate, the pneumatic telescopic cylinder is fixedly connected with the third support and is located at one side of the third support, the lower shell mold base is fixedly connected with the output end of the pneumatic telescopic cylinder and is located at the lower end of the pneumatic telescopic cylinder, and the hand valve is fixedly connected with the support base plate and is located at the upper end of the support base plate.

2. The motorcycle fuel tank upper and lower shell combined welding positioning tool according to claim 1, characterized in that, The support base plate comprises a bottom plate, a first vertical plate, a second vertical plate and a positioning table, the first vertical plate is fixedly connected with the bottom plate and is located at the upper end of the bottom plate, the second vertical plate is fixedly connected with the bottom plate and is located at the upper end of the bottom plate, the positioning table is fixedly connected with the bottom plate and is located at the upper end of the bottom plate, and the positioning table is located between the first vertical plate and the second vertical plate.

3. The motorcycle fuel tank upper and lower shell combined welding positioning tool according to claim 2, characterized in that, The support base plate further comprises a first vertical stand and a second vertical stand, the number of the first vertical stand is multiple groups, each group of the first vertical stand is respectively fixedly connected with the bottom plate and is located at the upper end of the bottom plate, and the number of the second vertical stand is multiple groups, each group of the second vertical stand is respectively fixedly connected with the bottom plate and is located at the upper end of the bottom plate.

4. The motorcycle fuel tank upper and lower shell combined welding positioning tool according to claim 1, characterized in that, The third support comprises a vertical pipe, a horizontal pipe and a mounting plate, the number of the vertical pipe is two groups, two groups of the vertical pipe are respectively fixedly connected with the support base plate and are located at the upper end of the support base plate, the horizontal pipe is fixedly connected with two groups of the vertical pipe and is located at the upper end of two groups of the vertical pipe, and the mounting plate is fixedly connected with the horizontal pipe and is located at the upper end of the horizontal pipe.

5. The motorcycle fuel tank upper and lower shell combined welding positioning tool according to claim 1, characterized in that, Each set of manual push blocks includes a mounting base, a positioning rod, a film, a push rod, and a connecting arm. The push rod is rotatably connected to the mounting base and located at the upper end of the mounting base. The push rod is also slidably connected to the mounting base and embedded inside the mounting base. There are two sets of connecting arms. The two ends of each set of connecting arms are rotatably connected to the push rod and the positioning rod, respectively, and are located on both sides of the positioning rod and the push rod. The film is fixedly connected to the positioning rod and located at one end of the positioning rod.

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