Plastic for mobile phone waterproof bag, preparation method and preparation device thereof

Abstract

The invention discloses plastic for a mobile phone waterproof bag, a preparation method and a preparation device thereof, and belongs to the technical field of mobile phone waterproof bag preparation.The plastic comprises a base, a first support is arranged at the top of the base, an air cylinder is vertically installed at the top of the first support, the output end of the air cylinder is horizontally connected with a mounting plate, and a buffer mechanism is arranged at the bottom of the mounting plate; a high-frequency electrode plate is arranged at the bottom of the buffer mechanism. A transparent film can penetrate through the guide groove formed in the positioning insertion plate in a sliding mode, it is ensured that the film is stably conveyed, meanwhile, a through opening formed in the position, corresponding to a bag body window, of the positioning insertion plate is precisely aligned with a high-frequency electrode plate at the top and a supporting template at the bottom, and when the positioning insertion plate is inserted into a bag body with the side edge sealed to open the bag body, the film can be accurately conveyed. By means of the technical scheme, tiling positioning of the bag body can be achieved, it can be guaranteed that the transparent film and the window are accurately aligned, the problems that in a traditional technology, positioning operation is tedious, and precision is insufficient are effectively solved, and the accuracy of the window position after hot-pressing welding is greatly improved.

Description

Technical Field

[0001] This invention relates to a preparation apparatus, and more particularly to a preparation apparatus for waterproof mobile phone bags. It also relates to a preparation process, and more particularly to a preparation process for waterproof mobile phone bags, belonging to the field of waterproof mobile phone bag preparation technology. Background Technology

[0002] In the manufacturing process of waterproof mobile phone bags, the first step is to use a die-cutting machine to cut composite materials such as PVC, TPU or EVA film to form the initial shape of the bag body outline and the screen and button windows. Then, transparent films need to be cut separately according to the window size. Then, high-frequency electromagnetic field heating is used to make the material molecules rub and fuse together to achieve a seamless connection between the transparent film and the bag body. However, the hot-pressing welding process is quite complicated: the main body of the bag must be laid flat and positioned, and the transparent film must be precisely aligned with the bag through the positioning holes to ensure the accuracy of the viewing window position after hot pressing. The positioning operation of the bag and the transparent film is quite inconvenient. At the same time, the transparent film needs to be cut separately before welding, which not only increases the number of steps, but also directly affects the overall speed of hot-pressing welding.

[0003] To address these issues, a plastic, a preparation method, and a preparation apparatus for waterproof mobile phone bags were designed. Summary of the Invention

[0004] The main objective of this invention is to provide a plastic material, preparation method, and preparation apparatus for waterproof mobile phone bags. A guide groove inside a positioning plate allows a transparent film to slide through, ensuring smooth film transport. Simultaneously, an opening on the positioning plate corresponding to the bag's viewing window position precisely aligns with the top high-frequency electrode plate and the bottom support template. When the positioning plate is inserted into the bag after the side edges are sealed and opened, it achieves both flat positioning of the bag and precise alignment of the transparent film with the viewing window. This effectively solves the problems of cumbersome positioning operations and insufficient precision in traditional processes, significantly improving the accuracy of the viewing window position after hot-pressing. Furthermore, during welding, a cutting mechanism consisting of a rectangular frame plate, a rectangular sliding plate, a second sliding rod, a second spring, a cutter, a cutting groove, guide rollers, and a pressure plate can simultaneously complete the cutting of the transparent film during welding, eliminating the separate cutting step required in traditional processes, reducing production steps, and significantly improving efficiency. The overall hot-pressing welding speed has been increased, making it more suitable for large-scale mass production. The film feeding and take-up mechanism, consisting of a second support, unwinding roller, take-up roller, gears, grooves, mounting slots, trapezoidal inserts, a third spring, serrated grooves, and racks, automatically operates when the welding is completed and the mounting plate moves up, thanks to the transmission of gears and racks and the unidirectional rotating component formed by the trapezoidal inserts and serrated grooves. This mechanism not only completes the winding of waste transparent film after cutting but also releases new film, requiring no manual intervention throughout the process. The high degree of automation greatly simplifies the operation process and improves production continuity. The buffer mechanism, consisting of a support block, a first horizontal plate, a second horizontal plate, a first spring, a first sliding rod, and a limiting block, provides flexible buffering during the hot pressing process of the high-frequency electrode plate. By elastically adjusting and dispersing the pressure, it avoids material damage or over-welding (such as scorching of PVC film or cracking of TPU film) caused by excessive local pressure, further ensuring the welding quality and structural integrity of the product.

[0005] The objective of this invention can be achieved by adopting the following technical solution: A device for preparing a waterproof mobile phone bag includes a base, a first support on the top of the base, a cylinder vertically mounted on the top of the first support, an output end of the cylinder horizontally connected to an mounting plate, a buffer mechanism at the bottom of the mounting plate, and a high-frequency electrode plate at the bottom of the buffer mechanism. A first vertical plate is fixed to the top of the base, and a positioning plate is horizontally fixed to the top of the first vertical plate. A support structure for supporting the end of the positioning plate is provided at the top of the base away from the first vertical plate. The positioning insert has a guide groove inside for the transparent diaphragm to pass through; The top of the positioning plate is provided with an opening directly below the high-frequency electrode plate. The opening is connected to the guide groove, and a support template for supporting the transparent diaphragm is provided at the bottom of the opening. The inside of the opening is equipped with a cutting mechanism for cutting transparent films; The top of the base, near the first support, is equipped with a film winding and unwinding mechanism for winding up film waste and releasing transparent film.

[0006] Preferably, a strip groove is vertically formed on the inner side of the first bracket, and a guide block is vertically slidably arranged on the inner side of the strip groove, with the guide block fixed to the end of the mounting plate.

[0007] Preferably, the buffer mechanism includes a support block, a first horizontal plate, a second horizontal plate, a first spring, a first sliding rod, and a limiting block. The support block is vertically fixed to the bottom of the mounting plate. The first horizontal plate is horizontally fixed to the bottom end of the support block. The second horizontal plate is parallel to the bottom of the first horizontal plate. The first spring is evenly arranged between the top of the second horizontal plate and the first horizontal plate. The first sliding rod is vertically fixed to the top of the second horizontal plate. The first sliding rod slides to the top of the first horizontal plate. The top of the first sliding rod is fixed with a limiting block. The high-frequency electrode plate is fixed to the bottom of the second horizontal plate.

[0008] Preferably, the cutting mechanism includes a rectangular frame plate, a rectangular slide plate, a second slide rod, a second spring, a cutter, a cutting groove, a guide roller, and a pressure plate. The rectangular frame plate is horizontally fixed to the inner side of the opening. A rectangular slide plate is arranged parallel to the top of the rectangular frame plate. A second spring is evenly arranged between the top of the rectangular frame plate and the rectangular slide plate. A second slide rod is evenly slidably arranged on the rectangular frame plate. The second slide rod passes through the inside of the second spring and is fixedly connected to the bottom of the rectangular slide plate. A cutter is fixed to the bottom of the second slide rod, and the cutters are connected end to end to form a rectangle. A cutting groove that cooperates with the cutter is opened at the bottom of the opening. A pressure plate is fixed to the outer side of the bottom end of the first horizontal plate, and the pressure plate is located directly above the rectangular slide plate.

[0009] Preferably, guide rollers are rotatably mounted at both ends inside the opening, and the guide rollers are parallel to the width direction of the opening.

[0010] Preferably, the support structure includes a second vertical plate and a reset component. The second vertical plate is parallel to the width direction of the positioning insert and is vertically arranged. The top of the second vertical plate is arc-shaped and fits with the top of the positioning insert with a gap. The thickness of the gap between the top of the second vertical plate and the positioning insert is the same as the thickness of the bag body. The bottom of the second vertical plate is provided with a reset component.

[0011] Preferably, the reset assembly includes a shaft, a protective shell, and a spring. The bottom ends of the second vertical plate are both fixed with shafts, and the outer sides of the shafts are provided with protective shells. The shafts are rotatably connected to the end faces of the protective shells, and a spring is provided between the shafts and the outer sides of the protective shells.

[0012] Preferably, the film unwinding mechanism includes a second support, an unwinding roller, a winding roller, and a one-way rotating assembly. The second support is fixed to the top of the base. The unwinding roller is rotatably mounted at one end of the top of the second support, and the winding roller is rotatably mounted at the other end of the top of the second support. The unwinding roller is higher than the horizontal plane where the winding roller is located, and the end of the winding roller is provided with a one-way rotating assembly.

[0013] Preferably, the unidirectional rotating assembly includes a gear, a groove, a mounting groove, a trapezoidal insert, a third spring, a serrated groove, and a rack. The gear is rotatably mounted on the end of the take-up roller. A groove is provided on the inner side of the gear. Mounting grooves are uniformly provided on the outer side of the end of the take-up roller along the circumference. Trapezoidal inserts are slidably arranged inside the mounting grooves. A third spring is provided between the trapezoidal insert and the inner end of the mounting groove. A serrated groove that mates with the trapezoidal insert is uniformly provided on the inner side of the groove along the circumference. A rack that meshes with the gear is vertically fixed on the side of the end of the mounting plate.

[0014] The present invention also provides a manufacturing process for a waterproof mobile phone bag, comprising the following steps: Step 1: Place the bag body with the sealed sides onto the positioning plate. Use the positioning plate to support and open the bag body, making it flat and accurately positioned. During this process, ensure that the viewing window on the bag body is strictly aligned with the opening on the support template. At the same time, use the support structure to limit the ends of the bag body to prevent displacement during subsequent operations and to provide stable support to the ends of the positioning plate, ensuring the stability of the overall structure. Step 2: Release the transparent film through the film release mechanism. The transparent film smoothly passes through the positioning plate along the guide groove inside the positioning plate and finally covers the viewing window of the bag body. The transparent film is laid flat on the top of the support template, preparing for subsequent welding and cutting operations. Step 3: Start the cylinder. The output end of the cylinder pushes the mounting plate downward, which in turn drives the high-frequency electrode plate to move towards the support template. The high-frequency electrode plate first contacts the top of the bag body. As the mounting plate continues to move downward, the high-frequency electrode plate is buffered by the buffer mechanism and then tightly presses the bag body and the transparent film covering the viewing window. During the pressing process, the cutting mechanism moves synchronously to precisely cut the transparent film to match the size of the viewing window. Step 4: After the transparent film is cut, the bag body and the transparent film are pressed together stably, and the high-frequency electrode plate is in a fixed working position. At this time, the high-frequency electrode plate uses the high-frequency electromagnetic field to make the material molecules at the contact part of the bag body and the transparent film generate heat through friction, so as to achieve seamless welding between the two and ensure the sealing performance of the window position. Step 5: After the welding and cutting operations are completed, the cylinder drives the mounting plate to move upward and reset. The high-frequency electrode plate and the cutting mechanism also move upward and reset synchronously. During this process, the film winding and unwinding mechanism moves with the upward movement of the mounting plate to automatically wind up the transparent film waste generated after cutting, and release new transparent film at the same time to prepare materials for the next production cycle. Step 6: Remove the welded waterproof phone bag from the positioning plate. After checking that the product quality is qualified, repeat steps 1-5 above to carry out continuous production.

[0015] The beneficial effects of this invention are as follows: This invention provides a plastic, preparation method, and preparation apparatus for a waterproof mobile phone bag. A guide groove inside a positioning plate allows a transparent film to slide through, ensuring smooth film transport. Simultaneously, an opening on the positioning plate corresponding to the bag's viewing window position is precisely aligned with the top high-frequency electrode plate and the bottom support template. When the positioning plate is inserted into the bag after the side sealing, it expands the bag, achieving both flat positioning and precise alignment of the transparent film with the viewing window. This effectively solves the problems of cumbersome positioning operations and insufficient precision in traditional processes, significantly improving the accuracy of the viewing window position after hot-pressing. Furthermore, during welding, a cutting mechanism consisting of a rectangular frame plate, a rectangular slide plate, a second slide rod, a second spring, a cutter, a cutting groove, guide rollers, and a pressure plate can simultaneously complete the cutting of the transparent film during welding, eliminating the separate cutting process for the transparent film in traditional processes, reducing production steps, significantly improving the overall hot-pressing welding speed, and better meeting the needs of large-scale mass production. The film winding and unwinding mechanism, consisting of a second support, unwinding roller, winding roller, gear, groove, mounting groove, trapezoidal insert, third spring, serrated groove and rack, can automatically operate when the welding is completed and the mounting plate moves up, through the transmission of gear and rack and the unidirectional rotating component formed by trapezoidal insert and serrated groove. It can not only complete the winding of the cut transparent film waste, but also realize the unwinding of new film. The whole process does not require manual intervention, has a high degree of automation, greatly simplifies the operation process and improves the continuity of production. The buffer mechanism, consisting of a support block, a first horizontal plate, a second horizontal plate, a first spring, a first sliding rod, and a limiting block, can provide flexible buffering during the hot pressing process of the high-frequency electrode plate. By elastically adjusting and dispersing the pressure, it avoids material damage or excessive welding (such as scorching of PVC film or cracking of TPU film) caused by excessive local pressure, thus further ensuring the welding quality and structural integrity of the product. Attached Figure Description

[0016] Figure 1 This is a front view of a preferred embodiment of the plastic, preparation method, and preparation apparatus for a waterproof mobile phone bag according to the present invention. Figure 2 This is a front sectional view of a preferred embodiment of the plastic, preparation method and preparation apparatus for a waterproof mobile phone bag according to the present invention; Figure 3 This is a diagram of a preferred embodiment of the buffer mechanism in the present invention, which describes a plastic, preparation method, and preparation apparatus for a waterproof mobile phone bag. Figure 4 This is a cross-sectional view of a positioning insert plate in a preferred embodiment of the plastic, preparation method and preparation apparatus for a waterproof mobile phone bag according to the present invention. Figure 5 This invention relates to a preferred embodiment of a plastic, a preparation method, and a preparation apparatus for a waterproof mobile phone bag. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a diagram of a preferred embodiment of the plastic, preparation method, and preparation apparatus for a waterproof mobile phone bag according to the present invention; Figure 7 This is a diagram of a preferred embodiment of the film feeding and discharging mechanism in a plastic, preparation method and preparation apparatus for a waterproof mobile phone bag according to the present invention; Figure 8 This is a preferred embodiment of the internal structure of a gear in the present invention, which describes a plastic, a method for preparing a waterproof mobile phone bag, and a preparation apparatus thereof. Figure 9 This is a side sectional view of a gear in a preferred embodiment of the plastic, preparation method and preparation apparatus for waterproof mobile phone bags of the present invention.

[0017] In the diagram: 1. Base; 2. First bracket; 3. Cylinder; 4. Mounting plate; 5. High-frequency electrode plate; 6. Buffer mechanism; 601. Support block; 602. First horizontal plate; 603. Second horizontal plate; 604. First spring; 605. First sliding rod; 606. Limiting block; 7. First vertical plate; 8. Positioning plate; 9. Support structure; 901. Second vertical plate; 902. Shaft; 903. Protective shell; 904. Clockwork spring; 10. Guide channel; 11. Through port; 12. Support template; 13. Cutting mechanism; 1301. Rectangular frame plate; 1302. Rectangular slide plate; 1303. Second slide rod; 1304. Second spring; 1305. Cutter; 1306. Groove; 1307. Guide roller; 1308. Pressure plate; 14. Film winding and unwinding mechanism; 1401. Second support; 1402. Unwinding roller; 1403. Winding roller; 1404. Gear; 1405. Groove; 1406. Mounting groove; 1407. Trapezoidal insert; 1408. Third spring; 1409. Serrated groove; 1410. Rack. Detailed Implementation

[0018] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0019] like Figures 1-9As shown, this embodiment provides a device for preparing a waterproof mobile phone bag, including a base 1, a first support 2 on the top of the base 1, a cylinder 3 vertically mounted on the top of the first support 2, an installation plate 4 horizontally connected to the output end of the cylinder 3, a buffer mechanism 6 at the bottom of the installation plate 4, and a high-frequency electrode plate 5 at the bottom of the buffer mechanism 6. A first vertical plate 7 is fixed to the top of the base 1, and a positioning plate 8 is horizontally fixed to the top of the first vertical plate 7. A support structure 9 for supporting the end of the positioning plate 8 is provided at the top of the base 1 away from the first vertical plate 7. The positioning plate 8 has a guide groove 10 inside for the transparent diaphragm to pass through. The height of the guide groove 10 is equal to the thickness of the diaphragm plus 0.1 mm, and the inner wall roughness is Ra 1.6 μm to reduce friction. The top of the positioning plate 8 is provided with an opening 11 directly below the high-frequency electrode plate 5. The size of the opening 11 is equal to the viewing window size plus 2mm. The opening 11 is connected to the guide groove 10. The bottom of the opening 11 is provided with a support template 12 for supporting the transparent diaphragm. The support template 12 is made of polytetrafluoroethylene (high temperature resistant 260℃) and has a surface flatness of 0.05mm / m to prevent the diaphragm from deforming due to heat. The inner side of the opening 11 is provided with a cutting mechanism 13 for cutting transparent films; The top of the base 1, near the first support 2, is provided with a film winding and unwinding mechanism 14 for winding up film waste and releasing transparent film.

[0020] Overall working principle: The bag body, after side sealing, is fitted onto the positioning plate 8. Only one end of the bag body is unsealed, which is the insertion port for the mobile phone. The positioning plate 8 opens and flattens the bag body, aligning the viewing window of the bag body with the opening 11 on the support template 12. The support structure 9 then limits the end of the bag body and supports the end of the positioning plate 8. The transparent film is released by the film release mechanism 14, passing through the guide groove 10, through the positioning plate 8, and covering the viewing window of the bag body. The transparent film is located at the top of the support template 12. The cylinder 3 is activated, pushing the mounting plate 4 downward, which in turn moves the high-frequency electrode plate 5 towards the support template 12. The electrode plate 5 first contacts the top of the bag body. As the high-frequency electrode plate 5 continues to move downward, and after being buffered by the buffer mechanism 6, the bag body and the transparent film are pressed together. At the same time, during the pressing process, the transparent film is cut by the cutting mechanism 13. After the transparent film is cut, the bag body and the transparent film are pressed together, and the high-frequency electrode plate 5 is in a fixed position. The high-frequency electromagnetic field is used to fuse the materials. After the welding and cutting are completed, the cylinder 3 drives the mounting plate 4 to move upward and reset. The high-frequency electrode plate 5 and the cutting mechanism 13 move upward and reset synchronously. At this time, the film winding and unwinding mechanism 14 moves upward with the mounting plate 4 to wind up the cut transparent film waste and releases a new transparent film. The welded waterproof mobile phone bag is then removed.

[0021] In this embodiment, a strip groove is vertically provided on the inner side of the first bracket 2, and a guide block is vertically slidably provided on the inner side of the strip groove, and the guide block is fixed to the end of the mounting plate 4.

[0022] Local working principle: When the mounting plate 4 moves up and down under the drive of the cylinder 3, the guide block slides along the strip groove, which restricts the horizontal displacement of the mounting plate 4 and ensures that it moves stably only in the vertical direction, avoiding misalignment between the high-frequency electrode plate 5 and the through port 11, and improving the welding accuracy.

[0023] In this embodiment, the buffer mechanism 6 includes a support block 601, a first horizontal plate 602, a second horizontal plate 603, a first spring 604, a first sliding rod 605, and a limiting block 606. The support block 601 is vertically fixed to the bottom of the mounting plate 4. The first horizontal plate 602 is horizontally fixed to the bottom end of the support block 601. The second horizontal plate 603 is parallel to the bottom of the first horizontal plate 602. The first spring 604 is evenly arranged between the top of the second horizontal plate 603 and the first horizontal plate 602. The first sliding rod 605 is vertically fixed to the top of the second horizontal plate 603. The first sliding rod 605 slides to the top of the first horizontal plate 602. The limiting block 606 is fixed to the top of the first sliding rod 605. The high-frequency electrode plate 5 is fixed to the bottom of the second horizontal plate 603.

[0024] Local working principle: When the high-frequency electrode plate 5 contacts the bag body and continues to move downward, the second horizontal plate 603 is pressed upward to squeeze the first spring 604, and the first sliding rod 605 slides along the first horizontal plate 602. The impact force is absorbed by the elastic deformation of the spring to achieve flexible buffering. The limiting block 606 prevents the first sliding rod 605 from disengaging and avoids mechanism failure. This design disperses the hot pressing pressure and prevents the material from being damaged or over-welded due to excessive local pressure.

[0025] In this embodiment, the cutting mechanism 13 includes a rectangular frame plate 1301, a rectangular slide plate 1302, a second slide rod 1303, a second spring 1304, a cutter 1305, a cutting groove 1306, a guide roller 1307, and a pressure plate 1308. The rectangular frame plate 1301 is horizontally fixed to the inner side of the opening 11. The rectangular slide plate 1302 is arranged parallel to the top of the rectangular frame plate 1301. The second spring 1304 is evenly arranged between the top of the rectangular frame plate 1301 and the rectangular slide plate 1302. A second sliding rod 1303 is evenly slidably arranged on the upper part of the first horizontal plate 602. The second sliding rod 1303 passes through the inside of the second spring 1304 and is fixedly connected to the bottom of the rectangular sliding plate 1302. A cutter 1305 is fixed at the bottom end of the second sliding rod 1303, and the cutters 1305 are connected end to end to form a rectangle. A groove 1306 that cooperates with the cutter 1305 is opened at the bottom of the through opening 11. A pressure plate 1308 is fixed on the outer side of the bottom end of the first horizontal plate 602, and the pressure plate 1308 is located directly above the rectangular sliding plate 1302.

[0026] Local working principle: When the cylinder 3 drives the mounting plate 4 to move down, the first horizontal plate 602 drives the pressure plate 1308 to press down the rectangular sliding plate 1302 simultaneously, compressing the second spring 1304 and pushing the second sliding rod 1303 down, so that the cutter 1305 cuts into the cutting groove 1306, completing the rectangular cutting of the transparent film. After the welding is completed, the cylinder 3 resets, and the second spring 1304 rebounds to drive the cutter 1305 to move up and reset, realizing that welding and cutting are carried out simultaneously, eliminating the need for a separate cutting process.

[0027] In this embodiment, guide rollers 1307 are rotatably mounted at both ends inside the opening 11, and the guide rollers 1307 are parallel to the width direction of the opening 11.

[0028] Local working principle: When the transparent diaphragm passes through the guide groove 10, the guide roller 1307 contacts the diaphragm and rotates with the movement of the diaphragm, converting sliding friction into rolling friction, reducing the resistance of diaphragm conveying, avoiding diaphragm wrinkles or wear, and ensuring that the diaphragm is laid flat on the support template 12.

[0029] In this embodiment, the support structure 9 includes a second vertical plate 901 and a reset component. The second vertical plate 901 is parallel to the width direction of the positioning insert plate 8 and is vertically arranged. The top end of the second vertical plate 901 is arc-shaped and fits with the top end of the positioning insert plate 8 with a gap. The gap between the second vertical plate 901 and the positioning insert plate 8 is equal to the thickness of the bag body + 0.05mm (e.g., a 0.2mm bag body corresponds to a 0.25mm gap), ensuring that the limit is not loose. The gap thickness between the top end of the second vertical plate 901 and the positioning insert plate 8 is the same as the thickness of the bag body. The bottom of the second vertical plate 901 is provided with a reset component.

[0030] Local working principle: In the initial state, the second vertical plate 901 is in a vertical state. When the main body of the bag is inserted into the positioning insert 8, it will push the second vertical plate 901 to tilt towards the first vertical plate 7. After the main body of the bag is inserted, the reset component will reset the second vertical plate 901, limit the end of the main body of the bag, and support the positioning insert 8.

[0031] In this embodiment, the reset assembly includes a shaft 902, a protective shell 903, and a spring 904. The shaft 902 is fixed at both ends of the bottom of the second vertical plate 901. The protective shell 903 is provided on the outer side of the shaft 902. The end faces of the shaft 902 and the protective shell 903 are rotatably connected. The spring 904 is provided between the outer side of the shaft 902 and the protective shell 903.

[0032] Local working principle: When the main body of the bag is inserted into the positioning insert plate 8, the end of the bag presses against the top of the second vertical plate 901, causing it to rotate around the shaft 902 and compress the spring 904. After the bag is positioned, the spring 904 rebounds and drives the second vertical plate 901 to reset. The gap between its top and the positioning insert plate 8 locks the end of the bag to prevent displacement. At the same time, the second vertical plate 901 provides support for the end of the positioning insert plate 8, preventing it from bending and deforming due to force.

[0033] In this embodiment, the film unwinding and winding mechanism 14 includes a second support 1401, an unwinding roller 1402, a winding roller 1403, and a one-way rotation assembly. The second support 1401 is fixed to the top of the base 1. The unwinding roller 1402 is rotatably mounted on one end of the top of the second support 1401. The unwinding roller 1402 has a diameter of 80mm and a length of 150mm. Its surface is covered with a silicone layer to prevent the film from slipping. The winding roller 1403 is rotatably mounted on the other end of the top of the second support 1401. The winding roller 1403 has a diameter of 60mm. The unwinding roller 1402 is higher than the horizontal plane where the winding roller 1403 is located. The end of the winding roller 1403 is provided with a one-way rotation assembly.

[0034] Local working principle: When the mounting plate 4 moves vertically downward, the rotation of the take-up roller 1403 and the unwind roller 1402 will not be controlled due to the presence of the one-way rotation component. At this time, the position of the transparent film is fixed so that the welding operation can be carried out. After the welding is completed, the upward movement of the mounting plate 4 will control the rotation of the take-up roller 1403 through the one-way rotation component to take up the cut waste material, while the unwind roller 1402 will release new material to replace the top position of the support template 12.

[0035] In this embodiment, the unidirectional rotating assembly includes a gear 1404, a groove 1405, a mounting groove 1406, a trapezoidal insert 1407, a third spring 1408, a serrated groove 1409, and a rack 1410. The gear 1404 is rotatably mounted on the end of the take-up roller 1403. The inner side of the gear 1404 is provided with a groove 1405. The outer side of the end of the take-up roller 1403 is provided with a mounting groove 1406 evenly along the circumference. The inside of the mounting groove 1406 is slidably provided with a trapezoidal insert 1407. A third spring 1408 is provided between the trapezoidal insert 1407 and the inner end of the mounting groove 1406. The inner side of the groove 1405 is provided with a serrated groove 1409 that cooperates with the trapezoidal insert 1407 evenly along the circumference. The side of the end of the mounting plate 4 is vertically fixed with a rack 1410 that meshes with the gear 1404.

[0036] Local working principle: When the mounting plate 4 moves upward, the rack 1410 on its side drives the gear 1404 to rotate. The gear 1404 meshes with the trapezoidal insert 1407 on the take-up roller 1403 through the inner sawtooth groove 1409. The trapezoidal insert 1407 is pushed into the sawtooth groove 1409 by the third spring 1408. The trapezoidal insert 1407 is in contact with the vertical side of the sawtooth groove 1409. The rotation of the gear 1404 can drive the take-up roller 1403 synchronously. As the rotating plate 4 moves down, the rack 1410 drives the gear 1404 to rotate in the opposite direction. The inclined surface of the sawtooth groove 1409 presses the inclined surface of the trapezoidal insert 1407, causing it to compress the third spring 1408 and disengage. The winding roller 1403 does not rotate to prevent the waste from returning. The unwinding roller 1402 automatically releases new film due to gravity and winding tension. This, combined with the winding action, achieves continuous film supply and waste disposal without manual intervention.

[0037] like Figures 1-9 As shown in the figure, this embodiment provides a manufacturing process for a waterproof mobile phone bag as follows: Step 1: Place the bag body with the side edges already sealed onto the positioning plate 8. Use the support of the positioning plate 8 to open the bag body, making it flat and accurately positioned. During this process, ensure that the viewing window on the bag body is strictly aligned with the opening 11 on the support template 12. At the same time, use the support structure 9 to limit the end of the bag body to prevent displacement during subsequent operations and to provide stable support for the end of the positioning plate 8, ensuring the stability of the overall structure. Step 2: The transparent film is released by the film release mechanism 14. The transparent film passes smoothly through the positioning plate 8 along the guide groove 10 inside the positioning plate 8 and finally covers the viewing window position of the bag body. The transparent film is laid flat on the top of the support template 12, preparing for subsequent welding and cutting operations. Step 3: Start cylinder 3. The output end of cylinder 3 pushes the mounting plate 4 downward, which in turn drives the high-frequency electrode plate 5 to move towards the support template 12. The high-frequency electrode plate 5 first contacts the top of the bag body. As the mounting plate 4 continues to move downward, the high-frequency electrode plate 5 is buffered by the buffer mechanism 6 and then tightly presses the bag body and the transparent film covering the viewing window. During the pressing process, the cutting mechanism 13 operates synchronously to precisely cut the transparent film to match the size of the viewing window. Step 4: After the transparent film is cut, the bag body and the transparent film are stably pressed together, and the high-frequency electrode plate 5 is in a fixed working position. At this time, the high-frequency electrode plate 5 uses the high-frequency electromagnetic field to make the material molecules at the contact part of the bag body and the transparent film generate heat through friction, so as to achieve seamless welding between the two and ensure the sealing performance of the window position. Step 5: After the welding and cutting operations are completed, the cylinder 3 drives the mounting plate 4 to move upward and reset. The high-frequency electrode plate 5 and the cutting mechanism 13 also move upward and reset synchronously. During this process, the film feeding and unloading mechanism 14 moves with the upward movement of the mounting plate 4 to automatically wind up the transparent film waste generated after cutting and release new transparent film at the same time. Before each production, the pre-feed film length = the length of the opening 11 + 10mm (to ensure that there is enough margin to cover the viewing window after cutting) to prepare materials for the next production cycle. Step 6: Remove the welded waterproof phone bag from the positioning plate 8. After checking that the product quality is qualified, repeat steps 1-5 above to carry out continuous production.

[0038] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An apparatus for preparing a waterproof mobile phone bag, comprising a base (1), characterized in that: The base (1) has a first bracket (2) on top, a cylinder (3) is vertically mounted on the top of the first bracket (2), the output end of the cylinder (3) is horizontally connected to the mounting plate (4), the bottom of the mounting plate (4) has a buffer mechanism (6), and the bottom of the buffer mechanism (6) has a high-frequency electrode plate (5). The top of the base (1) is fixed with a first vertical plate (7), and the top of the first vertical plate (7) is horizontally fixed with a positioning plate (8). The top of the base (1) away from the first vertical plate (7) is provided with a support structure (9) that supports the end of the positioning plate (8). The positioning plate (8) has a guide groove (10) inside for the transparent film to pass through. The top of the positioning plate (8) is provided with a through-hole (11) directly below the high-frequency electrode plate (5). The through-hole (11) is connected to the guide groove (10). The bottom of the through-hole (11) is provided with a support template (12) for supporting the transparent film. The inside of the opening (11) is provided with a cutting mechanism (13) for cutting transparent films. The top of the base (1) near the first support (2) is provided with a film winding and unwinding mechanism (14) for winding up the film waste and releasing the transparent film.

2. The apparatus for preparing a waterproof mobile phone bag according to claim 1, characterized in that: The inner side of the first bracket (2) is vertically provided with a strip groove, and a guide block is vertically slidably provided on the inner side of the strip groove. The guide block is fixed to the end of the mounting plate (4).

3. The apparatus for preparing a waterproof mobile phone bag according to claim 1, characterized in that: The buffer mechanism (6) includes a support block (601), a first horizontal plate (602), a second horizontal plate (603), a first spring (604), a first sliding rod (605), and a limiting block (606). The support block (601) is vertically fixed to the bottom of the mounting plate (4). The bottom end of the support block (601) is horizontally fixed to the first horizontal plate (602). The bottom of the first horizontal plate (602) is parallel to the second horizontal plate (603). The top of the second horizontal plate (603) and the first horizontal plate (602) are evenly arranged with the first spring (604). The top of the second horizontal plate (603) is vertically fixed to the first sliding rod (605). The first sliding rod (605) slides to the top of the first horizontal plate (602). The top of the first sliding rod (605) is fixed with a limiting block (606). The high-frequency electrode plate (5) is fixed to the bottom of the second horizontal plate (603).

4. The apparatus for preparing a waterproof mobile phone bag according to claim 3, characterized in that: The cutting mechanism (13) includes a rectangular frame plate (1301), a rectangular slide plate (1302), a second slide rod (1303), a second spring (1304), a cutter (1305), a grooving (1306), a guide roller (1307), and a pressure plate (1308). The rectangular frame plate (1301) is horizontally fixed to the inner side of the opening (11). The rectangular slide plate (1302) is parallel to the top of the rectangular frame plate (1301). The second spring (1304) is evenly arranged between the top of the rectangular frame plate (1301) and the rectangular slide plate (1302). A second sliding rod (1303) is evenly slidably arranged on the first horizontal plate (602). The second sliding rod (1303) passes through the inside of the second spring (1304) and is fixedly connected to the bottom of the rectangular sliding plate (1302). A cutter (1305) is fixed at the bottom of the second sliding rod (1303), and the cutters (1305) are connected end to end to form a rectangle. A groove (1306) that cooperates with the cutter (1305) is opened at the bottom of the through-hole (11). A pressure plate (1308) is fixed on the outer side of the bottom of the first horizontal plate (602), and the pressure plate (1308) is located directly above the rectangular sliding plate (1302).

5. The apparatus for preparing a waterproof mobile phone bag according to claim 4, characterized in that: Guide rollers (1307) are rotatably installed at both ends inside the opening (11), and the guide rollers (1307) are parallel to the width direction of the opening (11).

6. The apparatus for preparing a waterproof mobile phone bag according to claim 1, characterized in that: The support structure (9) includes a second vertical plate (901) and a reset component. The second vertical plate (901) is parallel to the width direction of the positioning insert (8) and is set vertically. The top of the second vertical plate (901) is arc-shaped and fits with the top of the positioning insert (8) with a gap. The gap thickness between the top of the second vertical plate (901) and the positioning insert (8) is the same as the thickness of the bag body. The bottom of the second vertical plate (901) is provided with a reset component.

7. The apparatus for preparing a waterproof mobile phone bag according to claim 6, characterized in that: The reset assembly includes a shaft (902), a protective shell (903), and a spring (904). The shaft (902) is fixed at both ends of the bottom of the second vertical plate (901). The outer side of the shaft (902) is provided with a protective shell (903). The end faces of the shaft (902) and the protective shell (903) are rotatably connected. A spring (904) is provided between the outer side of the shaft (902) and the protective shell (903).

8. The apparatus for preparing a waterproof mobile phone bag according to claim 1, characterized in that: The film winding and unwinding mechanism (14) includes a second support (1401), an unwinding roller (1402), a winding roller (1403), and a one-way rotation assembly. The second support (1401) is fixed to the top of the base (1). The unwinding roller (1402) is rotatably mounted on one end of the top of the second support (1401), and the winding roller (1403) is rotatably mounted on the other end of the top of the second support (1401). The unwinding roller (1402) is higher than the horizontal plane where the winding roller (1403) is located. The end of the winding roller (1403) is provided with a one-way rotation assembly.

9. The apparatus for preparing a waterproof mobile phone bag according to claim 8, characterized in that: The unidirectional rotating assembly includes a gear (1404), a groove (1405), a mounting groove (1406), a trapezoidal insert (1407), a third spring (1408), a serrated groove (1409), and a rack (1410). The gear (1404) is rotatably mounted on the end of the take-up roller (1403). A groove (1405) is provided on the inner side of the gear (1404), and mounting grooves (1405) are uniformly provided circumferentially on the outer side of the end of the take-up roller (1403). 406), Trapezoidal inserts (1407) are slidably arranged inside the mounting groove (1406). A third spring (1408) is provided between the trapezoidal inserts (1407) and the inner end of the mounting groove (1406). A serrated groove (1409) that cooperates with the trapezoidal inserts (1407) is evenly opened along the circumference of the inner side of the groove (1405). A rack (1410) that meshes with the gear (1404) is vertically fixed on the side of the end of the mounting plate (4).

10. A manufacturing process for a waterproof mobile phone bag, based on an apparatus for manufacturing a waterproof mobile phone bag according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the bag body with the side edge sealed on the positioning plate (8). Use the support of the positioning plate (8) to open the bag body, so that it can be laid flat and accurately positioned. During this process, it is necessary to ensure that the position of the window on the bag body is strictly aligned with the opening (11) on the support template (12). At the same time, use the support structure (9) to limit the end of the bag body to prevent the bag body from shifting in subsequent operations, and provide stable support to the end of the positioning plate (8) to ensure the stability of the overall structure. Step 2: Release the transparent film through the film release mechanism (14). The transparent film passes smoothly through the guide groove inside the positioning plate (8) and finally covers the viewing window of the bag body. The transparent film is laid flat on the top of the support template (12) to prepare for subsequent welding and cutting operations. Step 3: Start the cylinder (3). The output end of the cylinder (3) pushes the mounting plate (4) downward, which in turn drives the high-frequency electrode plate (5) to move towards the support template (12). The high-frequency electrode plate (5) first contacts the top of the bag body. As the mounting plate (4) continues to move downward, the high-frequency electrode plate (5) is buffered by the buffer mechanism (6) and then tightly presses the bag body and the transparent film covering the viewing window. During the pressing process, the cutting mechanism (13) operates synchronously to precisely cut the transparent film so that it matches the size of the viewing window. Step 4: After the transparent film is cut, the bag body and the transparent film are pressed together stably, and the high-frequency electrode plate (5) is in a fixed working position. At this time, the high-frequency electrode plate (5) uses the high-frequency electromagnetic field to make the material molecules at the contact part of the bag body and the transparent film generate heat through friction, so as to achieve seamless welding between the two and ensure the sealing performance of the window position. Step 5: After the welding and cutting operations are completed, the cylinder (3) drives the mounting plate (4) to move upward and reset. The high-frequency electrode plate (5) and the cutting mechanism (13) also move upward and reset synchronously. During this process, the film winding and unwinding mechanism (14) moves with the upward movement of the mounting plate (4) to automatically wind up the transparent film waste generated after cutting, and release new transparent film at the same time to prepare materials for the next production cycle. Step 6: Remove the welded waterproof bag from the positioning plate (8), check that the product quality is qualified, and repeat steps 1-5 above to carry out continuous production.

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