Ultrasonic welding device for rear lampshade of bicycle helmet

Abstract

The utility model provides an ultrasonic welding device for a rear lampshade of a bicycle helmet, which comprises a machine frame and three ultrasonic welding machines, the ultrasonic welding machines are respectively connected with a first upper die in the middle and second upper dies arranged in bilateral symmetry, the machine frame is provided with lower dies corresponding to the first upper die and the second upper dies, and the lower dies are connected with the three ultrasonic welding machines. Mounting assemblies are transversely arranged on the machine frame, the middle ultrasonic welding machine is downwards arranged on the middle mounting assembly, and the other two ultrasonic welding machines are obliquely arranged on the mounting assemblies on the two sides. The full-area ultrasonic welding machine has the advantages that the three ultrasonic welding machines work at the same time, full-area welding of the center and the two sides of the rear lampshade can be completed in one welding stroke, and the efficiency and the yield are improved.

Description

An ultrasonic welding device for bicycle helmet rear light cover Technical Field

[0001] This utility model relates to the technical field of ultrasonic welding, and in particular to an ultrasonic welding device for a bicycle helmet rear light cover. Background Technology

[0002] With the development of ultrasonic welding technology, its advantages such as fast welding speed, high strength, and no pollution have led to its increasing application in the field of plastic product welding. However, traditional ultrasonic welding equipment often uses a single-head point-by-point welding method, requiring sequential welding operations on different parts of the bicycle helmet's rear light cover, such as the center and both sides. This method has significant limitations: firstly, frequent adjustments to the welding position result in low welding efficiency, making it difficult to meet the needs of mass production; secondly, multiple positioning operations can easily lead to cumulative errors, resulting in decreased welding accuracy and affecting the product yield. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide an ultrasonic welding device for the rear light cover of a bicycle helmet.

[0004] This utility model provides an ultrasonic welding device for a bicycle helmet rear light cover, including a frame 1 and three ultrasonic welding machines 6. Each ultrasonic welding machine 6 is connected to a central first upper mold 3 and two symmetrically arranged second upper molds 4. The frame 1 is provided with a lower mold 2 corresponding to the first upper mold 3 and the second upper molds 4. Mounting components 5 are arranged horizontally on the frame 1. The central ultrasonic welding machine 6 is positioned downwards on the central mounting component 5, and the other two ultrasonic welding machines 6 are inclinedly positioned on the mounting components 5 on both sides.

[0005] Furthermore, the mounting component 5 includes a base 5.1, on which a column 5.2 is vertically mounted, and a mounting block 5.3 is locked onto the column 5.2. Adjustment components for adjusting the mounting block 5.3 up and down are provided at the column 5.2 and the mounting block 5.3.

[0006] Furthermore, the adjustment assembly includes a rack 5.4 vertically disposed on the side wall of the column 5.2, and a worm wheel 5.5 and a worm 5.6 rotatably disposed on the mounting block 5.3, the worm wheel 5.5 meshing with the rack 5.4, and a first throttle connected to the worm 5.6.

[0007] Furthermore, the middle ultrasonic welding machine 6 is mounted downwards on the mounting block 5.3, while the ultrasonic welding machines 6 on both sides are mounted at an angle on the mounting block 5.3 via discs.

[0008] Furthermore, a fixing block 7 is fixedly provided on the frame 1, and the base 5.1 in the middle is installed on the fixing block 7.

[0009] Furthermore, slide rails 9 are symmetrically arranged on the left and right sides of the frame 1, and sliders 8 are slidably mounted on the slide rails 9. The bases 5.1 on both sides are respectively installed on the sliders 8 on both sides. A screw 10 is arranged laterally and rotatably on the slide rails 9 and is screwed to the sliders 8. A second throttle is connected to the screw 10.

[0010] The advantages of this invention are as follows: Three ultrasonic welding machines operate simultaneously, completing the welding of the entire area of ​​the lampshade's center and both sides in a single welding stroke, improving efficiency and yield; using one first upper mold and two second upper molds allows for simultaneous welding of the central area and side edges of the bicycle helmet's rear lampshade, adapting to the irregular contours of the lampshade; the ultrasonic welding machines on both sides are tilted, enabling vertical welding of the curved surface structure on the lampshade's sides, ensuring precise welding angles; the mounting base and the ultrasonic welding machines on it can be adjusted vertically via adjustable components, allowing for quick adjustment of the distance between the upper and lower molds, adapting to the production needs of various product specifications; the first throttle rotates the worm gear, which in turn drives the worm wheel, and the rack on the column drives the worm wheel, worm gear, and mounting block to adjust vertically along the column, thereby adjusting the vertical position of the ultrasonic welding machines; the second throttle rotates the screw, which drives the slider and its components to move left and right along the slide rail, thereby adjusting the left and right positions of the ultrasonic welding machines on both sides. Attached Figure Description

[0011] Figure 1 is a perspective view of this utility model;

[0012] Figure 2 is a schematic diagram of the structure of this utility model;

[0013] Figure 3 is a front view of this utility model;

[0014] Figure 4 is an enlarged view of part A in Figure 2. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0017] Referring to Figures 1 to 4, this utility model provides an ultrasonic welding device for the rear light cover of a bicycle helmet, which includes a frame 1 and three ultrasonic welding machines 6. Ultrasonic welding machines are existing technology, achieving intermolecular bonding of materials through high-frequency vibration. The welding process is flameless and requires no consumables, avoiding the risks of pollution, deformation, or detachment that may occur with traditional hot-melt or adhesive processes. It is particularly suitable for helmet products with high environmental and safety requirements. Each ultrasonic welding machine 6 is connected to a central first upper mold 3 and two symmetrically arranged second upper molds 4. The frame 1 is equipped with lower molds 2 corresponding to the first upper mold 3 and the second upper molds 4. Using one first upper mold and two second upper molds, the central area and two side edges of the bicycle helmet rear light cover can be welded simultaneously, adapting to the irregular contours of the light cover. Mounting components 5 are arranged horizontally on the frame 1. The central ultrasonic welding machine 6 is positioned downwards on the central mounting component 5, while the other two ultrasonic welding machines 6 are inclined on the mounting components 5 on either side. The ultrasonic welding machines on both sides are tilted, allowing for vertical welding of the curved surface structure on the side of the lampshade, ensuring precise welding angles. Workers place the rear lampshade snugly onto the lower mold for positioning. The ultrasonic welding machines then lower the first and second upper molds to the bottom to fit the rear lampshade. The ultrasonic welding machines weld the rear lampshade using high-frequency vibration, completing the welding of the entire area from the center to both sides of the lampshade in a single welding stroke, improving efficiency and yield, making it particularly suitable for mass production. The mounting component 5 includes a base 5.1, with a vertical column 5.2 mounted on the base 5.1. A mounting block 5.3 is locked onto the column 5.2. Adjustment components for vertically adjusting the mounting block 5.3 are located at the column 5.2 and mounting block 5.3. The mounting block slides vertically onto the column, and a locking bolt is screwed into the opening of the mounting block to secure it. The mounting base and the ultrasonic welding machine on it can be adjusted vertically via the adjustment components, allowing for quick adjustment of the distance between the upper and lower molds, adapting to the production needs of various product specifications.

[0018] Referring to Figures 2 and 4, the adjustment assembly includes a rack 5.4 vertically mounted on the side wall of the column 5.2, and a worm gear 5.5 and a worm 5.6 rotatably mounted on the mounting block 5.3, meshing with each other. The worm gear 5.5 meshes with the rack 5.4, and a first throttle is connected to the worm 5.6. Loosening the mounting block and rotating the worm using the first throttle causes the worm to rotate, which in turn drives the worm gear to rotate. The rack on the column then drives the worm gear, worm, and mounting block to adjust up and down along the column, thereby adjusting the vertical position of the ultrasonic welding machine. Finally, the mounting block is locked to the column.

[0019] The central ultrasonic welding machine 6 is mounted downwards on the mounting block 5.3, while the two side ultrasonic welding machines 6 are mounted at an angle on the mounting block 5.3 via discs. The discs are located at the rear ends of the two side ultrasonic welding machines, and the discs have screw holes evenly distributed around their circumference along their axis. The discs are mounted to the mounting block through the screw holes, and the tilt angle of the two side ultrasonic welding machines can be adjusted as needed.

[0020] A fixing block 7 is fixedly installed on the frame 1, and the base 5.1 in the middle is installed on the fixing block 7.

[0021] The frame 1 has symmetrical slide rails 9 on its left and right sides. Sliding blocks 8 are mounted on the slide rails 9, moving left and right. Bases 5.1 on both sides are respectively installed on the sliding blocks 8. A screw 10 is horizontally and rotatably installed on the slide rails 9, and is screwed to the sliding blocks 8. A second throttle is connected to the screw 10. By rotating the screw with the second throttle, the screw drives the sliding blocks and their components to move left and right along the slide rails, thereby adjusting the left and right positions of the ultrasonic welding machines on both sides.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An ultrasonic welding device for the rear light cover of a bicycle helmet, characterized in that: The device includes a frame and three ultrasonic welding machines. Each ultrasonic welding machine is connected to a central first upper mold and two symmetrically arranged second upper molds. The frame is provided with lower molds corresponding to the first and second upper molds. Mounting components are arranged horizontally on the frame. The central ultrasonic welding machine is positioned downwards on the central mounting component, while the other two ultrasonic welding machines are inclinedly positioned on the mounting components on either side.

2. The ultrasonic welding device for the rear light cover of a bicycle helmet as described in claim 1, characterized in that: The mounting assembly includes a base, a vertically mounted column on the base, a mounting block locked onto the column, and an adjustment assembly for adjusting the mounting block up and down at the column and the mounting block.

3. The ultrasonic welding device for the rear light cover of a bicycle helmet as described in claim 2, characterized in that: The adjustment assembly includes a rack vertically disposed on the side wall of the column, and a worm gear and a worm shaft rotatably disposed on the mounting block, the worm gear meshing with the rack, and a first throttle connected to the worm shaft.

4. The ultrasonic welding device for the rear light cover of a bicycle helmet as described in claim 2, characterized in that: The middle ultrasonic welding machine is mounted downwards on the mounting block, while the ultrasonic welding machines on both sides are mounted at an angle on the mounting block via discs.

5. The ultrasonic welding device for the rear light cover of a bicycle helmet as described in claim 2, characterized in that: A fixing block is fixedly provided on the frame, and the base in the middle is installed on the fixing block.

6. The ultrasonic welding device for the rear light cover of a bicycle helmet as described in claim 2, characterized in that: The frame is symmetrically provided with slide rails on the left and right sides, and sliders are slidably mounted on the slide rails. The bases on both sides are respectively installed on the sliders on both sides. A screw is provided horizontally and rotatably on the slide rail and is screwed to the slider. A second throttle is connected to the screw.

Images