A device for hot melt joining of mask ear straps

Abstract

This utility model relates to the field of mask production technology, and in particular to a device for heat-melting ear loops in masks. The device includes a processing table with a processing mechanism for heat-melting ear loops. The processing mechanism includes: a positioning component, comprising a fixture fixed to the front end of the top of the processing table, a fixture seat rotatably mounted on the upper end of the fixture table, and a servo motor mounted on the bottom of the processing table to drive the fixture seat to rotate; an ear loop feeding component, comprising a feeding part mounted on the processing table for feeding ear loops, and a shearing part mounted on the processing table for shearing ear loops; and an execution component, comprising a heat-melting part mounted on the processing table for melting the contact surface between the ear loops and the edge of the mask. This device achieves fully automated ear loop welding, ensuring symmetrical ear loop distribution through precise positioning and synchronous operation, resulting in a strong and reliable heat-melt connection. It significantly improves production efficiency and product consistency, reduces manual intervention, and is suitable for mass production of high-quality masks.

Description

Technical Field

[0001] This utility model relates to the field of mask production technology, specifically to a device for heat-melting connection of ear loops in masks. Background Technology

[0002] The working principle of a mask ear loop heat fusion welding machine is relatively simple yet highly efficient. It primarily uses an ultrasonic generator to convert electrical energy into high-frequency mechanical vibrations. This vibrational energy is transferred to a welding head, which then applies this energy to the ear loops and the mask body to be heat-fused. During the heat fusion process, the vibrational energy is converted into heat energy through friction, melting the plastic at the contact surfaces and bonding them together. After the heat fusion is complete, the applied pressure cools and solidifies the molten plastic, forming a strong heat fusion joint. According to CN213412965U, a KN95 mask ultrasonic ear loop hot melt welding machine is disclosed. This technology discloses a "machine frame and an ear loop wire mechanism, an ultrasonic welding mechanism, and a mask platform mounted on the machine frame. The ultrasonic welding mechanism is located between the ear loop wire mechanism and the mask platform. The ear loop wire mechanism includes an output part, a cutting part, and a first, second, and third clamp for holding the ear loop wire. The first clamp can be displaced relative to the output part to pull out the ear loop wire. The cutting part is used to cut the pulled-out ear loop wire. The second and third clamps are used to hold the two ends of the pulled-out ear loop wire and send the two ends of the ear loop wire to the ultrasonic welding mechanism for welding. The mask platform is used to send the mask to the ultrasonic welding mechanism for welding." The technical solution has the following advantages: "The ear loop wire can be quickly welded to the mask body by the hot melt welding machine, which speeds up the production efficiency of enterprises, reduces labor costs, and the welds on the machine-welded KN95 masks are uniform and consistent, with no overall difference, resulting in a high product qualification rate." The existing mask ear loop welding process suffers from low production efficiency and unstable quality. Specifically, traditional equipment struggles to achieve precise positioning and rapid welding of the ear loops, often resulting in ear loop misalignment, weak welding, or asymmetry. This leads to a decrease in product qualification rate and fails to meet the demands of large-scale standardized production, particularly during special periods when rapid and stable supply is required. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a device for heat-melting ear loops in face masks, which enables fully automated welding of ear loops. Through precise positioning and synchronous operation, it ensures symmetrical distribution of ear loops, and the heat-melt connection is firm and reliable, significantly improving production efficiency and product consistency, reducing manual intervention, and making it suitable for mass production of high-quality face masks.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for heat-melting ear loops of face masks, comprising a processing table, wherein a processing mechanism is provided on the processing table for heat-melting ear loops of face masks, and the processing mechanism includes: The positioning component includes a fixture table fixed to the front end of the top of the machining table, a fixture base rotatably mounted on the upper end of the fixture table, and a servo motor mounted on the bottom of the machining table for driving the fixture base to rotate. The ear loop feeding assembly includes a feeding component disposed on a processing table for feeding ear loops, and a shearing component disposed on the processing table for shearing ear loops; The execution component includes a heat-melting component disposed on a processing table for melting the contact surface between the ear loop and the edge of the mask, an alignment component disposed on the heat-melting component for feeding the ear loop end to the connection point with the mask, and a positioning component disposed on the heat-melting component for fixing the mask.

[0005] Preferably, the feeding component includes a guide rail fixed to the rear end of the top of the processing table, a slide block slidably mounted on the guide rail, a first gripper cylinder mounted on the left end of the slide block, a first cylinder mounted on the left side of the top of the processing table for driving the slide block to move along the guide rail, and a second gripper cylinder mounted on the left side inside the processing table for fixing the cut end of the ear loop.

[0006] Preferably, the shearing component includes a mounting frame fixed inside the left side of the processing table. The mounting frame has a straight groove and an inclined groove on its two sides. A second cylinder is installed inside the mounting frame. A lifting frame is fixed to the lower output end of the second cylinder. A first shear head is fixed to the upper end of the lifting frame. A first cam is rotatably mounted on the outer wall of the lifting frame and located inside the straight groove. A second shear head is pivotally connected to the first shear head, and a second cam is rotatably mounted on the lower outer wall of the second shear head and located inside the inclined groove.

[0007] Preferably, the hot-melting component includes a frame fixed to the rear end of the top of the processing table, a third cylinder is installed at the upper end of the frame, a horizontal plate is fixed to the output end of the third cylinder, and hot-melting heads are installed on both sides of the lower end of the horizontal plate.

[0008] Preferably, the alignment component includes a fourth cylinder installed on both sides of the upper end of the hot melt component, a bracket fixed between the lower output ends of the four fourth cylinders on both sides, a shaft frame pivotally connected to both sides of the bottom of the bracket, a third gripper cylinder installed at the bottom of the shaft frame, and a fifth cylinder pivotally connected to both sides of the rear end of the bottom of the bracket, with the output end of the fifth cylinder pivotally connected to the rear end of the bottom of the shaft frame.

[0009] Preferably, the positioning component further includes a sixth cylinder installed in front of the upper end of the hot melt component, and a pressure head is rotatably mounted on the output end of the sixth cylinder. Beneficial effects

[0010] This invention provides a device for heat-melting ear loops in face masks. Compared with the prior art, it has the following advantages: 1. By setting the drum device for storing ear loop material on the left side of the processing table, and clamping the ear loop on the drum with the first gripper cylinder, and then driving the slide block with the first cylinder, the slide block is pulled to the right by the ear loop clamped by the first gripper cylinder to achieve precise fixed-length feeding; and, by clamping and fixing the left end of the ear loop immediately after the ear loop reaches the predetermined length with the second gripper cylinder, the ear loop is kept taut during the cutting process, and at the same time, it is prepared for the next feeding cycle.

[0011] 2. Before the ear loop is cut by the cutting component, the third gripper cylinders on both sides pre-clamp the ear loop at the predetermined cutting position; after the cutting component completes the cutting action, the fifth cylinder immediately drives the shaft to rotate, causing the clamped ear loop ends to bend inward and form a shape, so that the bent ear loop ends are aligned with the position for connection with the mask. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the bottom of this utility model; Figure 3 This is a schematic diagram of the feeding component in this utility model; Figure 4 This is a schematic diagram of the shearing component in this utility model; Figure 5 This is a schematic diagram of the structure of the execution component in this utility model; Figure 6 This is a schematic diagram of the alignment component in this utility model.

[0013] In the diagram: 1. Machining table; 2. Machining mechanism; 21. Positioning component; 211. Tooling table; 212. Tooling base; 213. Servo motor; 22. Ear loop feeding component; 221. Feeding component; 2211. Guide rail; 2212. Slide; 2213. First gripper cylinder; 2214. First cylinder; 2215. Second gripper cylinder; 222. Shearing component; 2221. Mounting bracket; 2222. Straight groove; 2223. Inclined groove; 2224. Second cylinder; 2225. Lifting frame; 222 6. First scissor head; 2227. First cam; 2228. Second scissor head; 2229. Second cam; 23. Actuating component; 231. Hot melt component; 2311. Frame; 2312. Third cylinder; 2313. Horizontal plate; 2314. Hot melt head; 232. Alignment component; 2321. Fourth cylinder; 2322. Bracket; 2323. Shaft bracket; 2324. Third gripper cylinder; 2325. Fifth cylinder; 233. Positioning component; 2331. Sixth cylinder; 2332. Press head. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 - Figure 6 This utility model provides a technical solution: a device for heat-melting ear loops of face masks, including a processing table 1, on which a processing mechanism 2 is provided for heat-melting ear loops of face masks, the processing mechanism 2 including: The positioning component 21 includes a tooling table 211 fixed to the top front end of the processing table 1, a tooling base 212 rotatably mounted on the upper end of the tooling table 211, and a servo motor 213 mounted on the bottom of the processing table 1 for driving the tooling base 212 to rotate. The ear loop feeding assembly 22 includes a feeding component 221 disposed on the processing table 1 for feeding ear loops, and a shearing component 222 disposed on the processing table 1 for shearing ear loops. The execution component 23 includes a heat-melting component 231 disposed on the processing table 1 for melting the contact surface between the ear loop and the edge of the mask. The heat-melting component 231 is provided with an alignment component 232 for feeding the ear loop end to the connection point with the mask. The heat-melting component 231 is provided with a positioning component 233 for fixing the mask.

[0016] In this implementation scheme, the tooling table 211 provides a stable positioning reference for the mask. After the ear loop welding at one end is completed, the servo motor 213 precisely drives the tooling seat 212 to rotate 180 degrees and automatically positions the welding position at the other end.

[0017] Specifically, the feeding component 221 includes a guide rail 2211 fixed to the rear end of the top of the processing table 1, a slide block 2212 slidably mounted on the guide rail 2211, a first gripper cylinder 2213 mounted on the left end of the slide block 2212, a first cylinder 2214 mounted on the left side of the top of the processing table 1 for driving the slide block 2212 to move along the guide rail 2211, and a second gripper cylinder 2215 mounted on the left side inside the processing table 1 for fixing the cut end of the ear loop.

[0018] In this embodiment, the ear loop material storage drum device is set on the left side of the processing table 1, and the ear loop on the drum is clamped by the first gripper cylinder 2213. Then, the slide block 2212 is driven by the first cylinder 2214. The slide block 2212 is pulled to the right by the ear loop clamped by the first gripper cylinder 2213 to achieve precise fixed-length feeding. Furthermore, the left end of the ear loop is clamped and fixed immediately by the second gripper cylinder 2215 after the ear loop reaches the predetermined length to ensure that the ear loop remains taut during the cutting process, and at the same time prepares for the next feeding cycle.

[0019] Specifically, the shearing component 222 includes a mounting bracket 2221 fixed inside the left side of the processing table 1. The mounting bracket 2221 has a straight groove 2222 and an inclined groove 2223 on its two sides. A second cylinder 2224 is installed inside the mounting bracket 2221. A lifting frame 2225 is fixed to the output end below the second cylinder 2224. A first shear head 2226 is fixed to the upper end of the lifting frame 2225. A first cam 2227 is rotatably mounted on the outer wall of the lifting frame 2225 and located inside the straight groove 2222. A second shear head 2228 is pivotally connected to the first shear head 2226. A second cam 2229 is rotatably mounted on the lower outer wall of the second shear head 2228 and located inside the inclined groove 2223.

[0020] In this embodiment, the second cylinder 2224 drives the lifting frame 2225 to drive the first scissor head 2226 and the second scissor head 2228 to rise synchronously. At the same time, the second scissor head 2228 rotates through the cooperation of the second cam 2229 and the inclined groove 2223, thereby forming a cutting action with the first scissor head 2226, thereby cutting off the ear loop pulled out from the rolling device.

[0021] Specifically, the hot melt component 231 includes a frame 2311 fixed to the rear end of the top of the processing table 1. A third cylinder 2312 is installed on the upper end of the frame 2311. A horizontal plate 2313 is fixed to the output end of the third cylinder 2312. Hot melt heads 2314 are installed on both sides of the lower end of the horizontal plate 2313.

[0022] In this embodiment, after the ear loop is precisely bent into a U-shape and positioned by the alignment component 232, the third cylinder 2312 drives the horizontal plate 2313 to drive the two hot-melt heads 2314 on both sides to press down synchronously, so as to perform hot-melt connection between the two ends of the U-shaped ear loop and the contact surface of the mask edge.

[0023] Specifically, the alignment component 232 includes a fourth cylinder 2321 installed on both sides of the upper end of the hot melt component 231. A bracket 2322 is fixed between the output ends of the fourth cylinders 2321 on both sides. A shaft bracket 2323 is pivotally connected to both sides of the bottom of the bracket 2322. A third gripper cylinder 2324 is installed at the bottom of the shaft bracket 2323. A fifth cylinder 2325 is pivotally connected to both sides of the bottom rear end of the bracket 2322, and the output end of the fifth cylinder 2325 is pivotally connected to the bottom rear end of the shaft bracket 2323.

[0024] In this embodiment, before the ear loop is cut by the cutting component 222, the third gripper cylinders 2324 on both sides pre-clamp the ear loop at the predetermined cutting position. After the cutting component 222 completes the cutting action, the fifth cylinder 2325 immediately drives the shaft frame 2323 to rotate, causing the clamped ear loop ends to bend inward and form a shape, so that the bent ear loop ends are aligned with the position for connection with the mask.

[0025] Specifically, the positioning component 233 also includes a sixth cylinder 2331 installed in front of the upper end of the hot melt component 231, and a pressure head 2332 is rotatably installed at the output end of the sixth cylinder 2331.

[0026] In this embodiment, after the two ends of the ear loop are heated and melted by the heat-melting component 231, the sixth cylinder 2331 drives the pressure head 2332 to move downward, applying uniform pressure to the connection between the melted ear loop and the mask to ensure that the two are tightly bonded.

[0027] Working principle and usage process of this utility model: First, the mask is placed on the tooling table 211. Then, the roller device for storing ear loop material is set on the left side of the processing table 1, and the ear loop on the roller is clamped by the first gripper cylinder 2213. Then, the slide 2212 is driven by the first cylinder 2214. The slide 2212 is pulled to the right by the ear loop clamped by the first gripper cylinder 2213 to achieve precise fixed-length feeding. Furthermore, the left end of the ear loop is clamped and fixed immediately by the second gripper cylinder 2215 after the ear loop reaches the predetermined length, ensuring that the ear loop remains taut during the cutting process, and preparing for the next feeding cycle. Then, before the ear loop is cut by the cutting component 222, the third gripper cylinders 2324 on both sides pre-clamp the ear loop at the predetermined cutting position; then the second cylinder 2224 drives the lifting frame 2225 to drive the first scissor head 2226 and the second scissor head 2228 to rise synchronously. At the same time, the second scissor head 2228 rotates through the cooperation of the second cam 2229 and the inclined groove 2223, thereby forming a cutting action with the first scissor head 2226, thereby cutting off the ear loop pulled out from the winding device. After the shearing component 222 completes the cutting action, the fifth cylinder 2325 immediately drives the shaft frame 2323 to rotate, causing the two ends of the clamped ear loop to bend inward and form a shape, so that the two ends of the bent ear loop are aligned with the position for connection with the mask. After the ear loop is precisely bent into a U-shape and positioned by the alignment component 232, the third cylinder 2312 drives the horizontal plate 2313 to drive the two hot-melt heads 2314 on both sides to press down synchronously, and perform hot-melt connection between the two ends of the U-shaped ear loop and the contact surface of the mask edge; after the two ends of the ear loop are heated and melted by the hot-melt component 231, the sixth cylinder 2331 drives the pressure head 2332 to move downward, and applies uniform pressure to the connection between the melted ear loop and the mask to ensure that the two are tightly bonded; after the welding of one end of the ear loop is completed, the servo motor 213 precisely drives the fixture 212 to rotate 180 degrees, and automatically positions the welding position of the other end.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for hot melt joining of mask ear straps, comprising a processing table (1), characterized in that: The processing table (1) is equipped with a processing mechanism (2) for heat-melting the ear loops of the mask. The processing mechanism (2) includes: The positioning component (21) includes a tooling table (211) fixed to the front end of the top of the processing table (1), a tooling seat (212) rotatably mounted on the upper end of the tooling table (211), and a servo motor (213) mounted on the bottom of the processing table (1) for driving the tooling seat (212) to rotate. The ear loop feeding assembly (22) includes a feeding component (221) disposed on the processing table (1) and used for feeding ear loops, and a shearing component (222) disposed on the processing table (1) and used for shearing ear loops; The execution component (23) includes a heat-melting component (231) disposed on the processing table (1) and used to melt the contact surface between the ear loop and the edge of the mask. The heat-melting component (231) is provided with an alignment component (232) and used to deliver the ear loop end to the connection point with the mask. The heat-melting component (231) is provided with a positioning component (233) and used to fix the mask.

2. A device for hot melt bonding of ear straps to a facemask according to claim 1, wherein: The feeding component (221) includes a guide rail (2211) fixed at the top rear end of the processing table (1), a slide block (2212) slidably mounted on the guide rail (2211), a first gripper cylinder (2213) mounted on the left end of the slide block (2212), a first cylinder (2214) mounted on the top left side of the processing table (1) for driving the slide block (2212) to move along the guide rail (2211), and a second gripper cylinder (2215) mounted on the left side inside the processing table (1) for fixing the cut end of the ear loop.

3. A device for hot melt bonding of ear straps to a facemask according to claim 1, wherein: The shearing component (222) includes a mounting bracket (2221) fixed inside the left side of the processing table (1). The mounting bracket (2221) has a straight groove (2222) and an inclined groove (2223) on both sides. A second cylinder (2224) is installed inside the mounting bracket (2221). A lifting frame (2225) is fixed at the output end below the second cylinder (2224). A first scissor head (2226) is fixed at the upper end of the lifting frame (2225). A first cam (2227) is rotatably installed on the outer wall of the lifting frame (2225) and located inside the straight groove (2222). A second scissor head (2228) is pivotally connected to the first scissor head (2226). A second cam (2229) is rotatably installed on the lower outer wall of the second scissor head (2228) and located inside the inclined groove (2223).

4. A device for hot melt bonding of ear straps to a facemask according to claim 1, wherein: The hot melt component (231) includes a frame (2311) fixed at the top rear end of the processing table (1). A third cylinder (2312) is installed at the upper end of the frame (2311). A horizontal plate (2313) is fixed at the output end of the third cylinder (2312). Hot melt heads (2314) are installed on both sides of the lower end of the horizontal plate (2313).

5. A device for hot melt bonding of ear straps to a facemask according to claim 4, wherein: The alignment component (232) includes a fourth cylinder (2321) installed on both sides of the upper end of the hot melt component (231). A bracket (2322) is fixed between the output ends of the fourth cylinders (2321) on both sides. A shaft frame (2323) is pivotally connected to both sides of the bottom of the bracket (2322). A third gripper cylinder (2324) is installed at the bottom of the shaft frame (2323). A fifth cylinder (2325) is pivotally connected to both sides of the bottom rear end of the bracket (2322). The output end of the fifth cylinder (2325) is pivotally connected to the bottom rear end of the shaft frame (2323).

6. A device for hot melt bonding of ear straps to a facemask according to claim 4, wherein: The positioning component (233) also includes a sixth cylinder (2331) installed in front of the upper end of the hot melt component (231), and a pressure head (2332) is rotatably installed at the output end of the sixth cylinder (2331).

Images