Hot melt adhesive smearing and forming equipment for soles of sports shoes

Abstract

The invention relates to the technical field of shoe sole hot melting, in particular to hot melt adhesive smearing and forming equipment for sneaker shoe soles, which comprises an operation table, a heating box is embedded in the operation table, a smearing assembly is arranged in the heating box, and a separation net is arranged on the upper side of an inner cavity of the heating box. An extrusion part is installed between the smearing assembly and the heating box in a matched mode, the extrusion part and the smearing assembly are matched to remove bubbles in the heated hot melting materials, a conveying assembly is installed on the end face of the operation table in a matched mode, and the conveying assembly and the separation net are matched to convey the shoe soles. According to the hot melt adhesive smearing and forming equipment for the sneaker sole, the smearing assembly and the extrusion part are arranged, pressure is applied to hot melt adhesive through back-and-forth movement of the moving plate in the using process of the equipment, bubbles in the hot melt adhesive are extruded and discharged, the quality of the hot melt adhesive is improved, and the production efficiency is improved. And therefore, the effect of improving the compactness of the hot melt adhesive and the subsequent bonding forming quality is achieved.

Description

Technical Field

[0001] This invention relates to the field of hot melt technology for shoe soles, specifically to a hot melt adhesive coating and molding device for sports shoe soles. Background Technology

[0002] Sports shoe sole hot melt adhesive coating molding equipment is a type of automated equipment that heats and melts solid hot melt adhesive, and then applies it to shoe sole components through precise coating or extrusion to achieve bonding, sealing or direct molding.

[0003] Currently, conventional hot melt adhesive coating equipment for shoe soles mostly uses a rotating coating roller to evenly apply hot melt adhesive onto the roller surface, and then the coating roller transfers the adhesive to the shoe sole to complete the bonding process between the shoe sole and other components. Existing equipment lacks a corresponding adjustment structure inside the hot melt adhesive storage hopper, making it prone to air bubbles in the hot melt adhesive. When adhesive containing air bubbles is applied to the surface of the shoe sole or accessories, defects such as localized insufficient adhesive and uneven adhesive layer thickness will occur. These weak areas are prone to stress concentration during subsequent pressing and product use, leading to quality problems such as insufficient adhesive strength, easy delamination, and peeling. Furthermore, most existing coating rollers are exposed, and the hot melt adhesive remaining on the roller surface during operation cannot be recycled and reused. After the residual adhesive cools and solidifies, it will cause uneven thickness on the coating roller surface, which must be cleaned manually; otherwise, it will directly affect the uniformity of subsequent coating. Meanwhile, manually cleaning the glue-coating rollers also poses a safety hazard of high-temperature burns.

[0004] Therefore, a hot melt adhesive coating and molding device for sports shoe soles is needed to improve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a hot melt adhesive coating and molding device for sports shoe soles.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A hot melt adhesive coating and molding device for sports shoe soles includes an operating table, a heating box embedded in the operating table, a coating component disposed in the heating box, an isolation net disposed on the upper side of the inner cavity of the heating box, an extrusion component installed between the coating component and the heating box, the extrusion component and the coating component working together to remove air bubbles from the inside of the hot melt material during heating, and a conveying component installed on the end face of the operating table, the conveying component and the isolation net working together to transport the sole; The coating assembly includes a second motor. The second motor is installed on the outer wall of the heating box. A rotating roller is rotatably arranged in the middle of the inner wall of the heating box. The power output shaft of the second motor passes through the outer wall of the heating box and is fixedly connected to the rotating roller. Gear 2 is rotatably installed on the inner walls of the left and right sides of the heating box, and gear 1 is installed on the outer walls of the rotating roller on the left and right sides, with gear 1 meshing with gear 2; The extrusion component includes a movable plate.

[0007] As a preferred embodiment of the present invention, a control panel is installed on the outer wall of the front side of the operating table, and limit rods are symmetrically installed on the front side of the inner wall of the heating box. The movable plate is slidably installed between the two limit rods, and the left and right side walls of the movable plate are in contact with the inner wall of the heating box respectively.

[0008] As a preferred embodiment of the present invention, a horizontal plate is installed on the upper front side of the inner wall of the heating box, and the bottom surface of the horizontal plate is in contact with the end face of the moving plate. A fixed frame is symmetrically installed on the side of the movable plate near the gear two. A transmission rod one is rotatably installed on the fixed frame. A connecting shaft is rotatably installed on the side of the transmission rod one away from the fixed frame. A transmission rod two is rotatably installed on the connecting shaft. The transmission rod two is rotatably mounted on the gear two.

[0009] As a preferred embodiment of the present invention, the movable plate is provided with a plurality of through holes evenly distributed, and a plurality of mounting seats are evenly distributed on the side of the movable plate away from the coating component; A circular plate is rotatably mounted on the mounting base, and the circular plate seals the through hole.

[0010] As a preferred embodiment of the present invention, the mounting base is provided with a connecting frame, which is located above the circular plate and limits the circular plate to prevent it from overturning.

[0011] As a preferred embodiment of the present invention, a fixing ring is installed on the outer wall of the limiting rod, and on the side close to the coating component, the fixing ring preventing the moving plate from falling off the limiting rod.

[0012] As a preferred embodiment of the present invention, a plurality of discharge components are uniformly arranged on the bottom surface of the movable plate. Each discharge component includes a connecting cylinder. The plurality of connecting cylinders are uniformly arranged below the side wall of the movable plate. A connecting ring is installed in the inner cavity of the connecting cylinder, and a connecting plate is installed on the inner wall of the connecting ring. A limit post is installed on the side of the connecting plate away from the moving plate. A spring is installed on the side of the connecting ring away from the moving plate. A protective sleeve is fitted on the fixing ring. The side of the spring away from the connecting ring is fixedly connected to the inner wall of the protective sleeve. A sealing bead is connected to the side of the protective sleeve away from the sealing bead. The sealing bead is slidably mounted on the limit post.

[0013] As a preferred embodiment of the present invention, the conveying assembly includes a mounting frame, which is fixedly disposed on the end face of the operating table; The mounting frame is equipped with a hydraulic telescopic rod, and an I-beam is installed at the end of the telescopic shaft of the hydraulic telescopic rod. The I-beam frame is equipped with U-beam frames on its front and rear sides respectively. A motor is installed on the side wall of the U-beam frame. The power output shaft of the motor passes through the U-beam frame and is equipped with a conveyor roller. The conveyor roller is rotatably arranged in the inner wall of the U-beam frame.

[0014] Compared with the prior art, the present invention sets up a coating component and an extrusion component in the hot melt adhesive coating and molding equipment for sports shoe soles. During the use of the device, pressure is applied to the hot melt adhesive by the back and forth movement of the moving plate, thereby squeezing out the air bubbles inside the hot melt adhesive, improving the quality of the hot melt adhesive, and thus achieving the effect of improving the density of the hot melt adhesive and the quality of subsequent bonding and molding.

[0015] Compared with the prior art, the present invention sets up a coating component and an extrusion component in the hot melt adhesive coating and molding equipment for sports shoe soles. During the use of the device, the motor drives the rotating roller to rotate and drive the moving plate to move back and forth. This composite motion can efficiently break up the air bubbles generated during the melting process and bring them to the liquid surface for elimination. At the same time, it ensures that the temperature and viscosity of the hot melt adhesive are highly uniform in the container, further improving the quality of the hot melt adhesive, thereby further improving the forming effect of the shoe sole after applying the hot melt adhesive.

[0016] Compared with the prior art, the present invention, by setting up a coating component, an extruder, a separating net, a heating box, and a conveying component in the hot melt adhesive coating molding equipment for sports shoe soles, achieves the improvement of the disadvantage of the traditional rotating roller being completely exposed to the outside through the cooperation between the above structures during the use of the device. This allows the rotating roller to adhere to the hot melt adhesive, and the residual hot melt adhesive on the rotating roller can be melted and returned to the heating box for reuse by heating, thereby improving the utilization rate of hot melt adhesive and reducing production costs. This also avoids the situation where operators frequently come into contact with the high-temperature solidified glue block for cleaning, reducing the risk of burns and the inhalation of volatile substances that may be generated during the cleaning process, making the working environment cleaner and safer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a side sectional view of the present invention. Figure 4 This is a cross-sectional view of the heating box of the present invention; Figure 5 This is one of the exploded structural diagrams of the extrusion component in this invention; Figure 6 This is the second schematic diagram of the exploded structure of the extrusion component in this invention; Figure 7 This is a cross-sectional view of the main material discharge assembly of the present invention; Figure 8 for Figure 5 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Control panel; 2. Conveying assembly; 201. Mounting frame; 202. Hydraulic telescopic rod; 203. I-beam frame; 204. U-beam frame; 205. Motor 1; 206. Conveying roller; 3. Control panel; 4. Heating box; 5. Guide frame; 6. Coating assembly; 601. Motor 2; 602. Rotating roller; 603. Gear 1; 604. Gear 2; 605. Fiber sleeve; 7. Extrusion piece; 701. Moving plate; 702. Discharge... Material assembly; 721, connecting cylinder; 722, connecting ring; 723, connecting plate; 724, spring; 725, protective sleeve; 726, limiting post; 727, sealing bead; 703, limiting rod; 704, fixing ring; 705, horizontal plate; 706, mounting base; 707, connecting frame; 708, round plate; 709, fixing frame; 710, transmission rod one; 711, transmission rod two; 712, connecting shaft; 713, through hole; 8, isolation net. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Example: Please refer to Figure 1 - Figure 8 The hot melt adhesive coating molding equipment for sports shoe soles shown includes an operating table 1, a heating box 4 embedded in the operating table 1, a coating component 6 disposed in the heating box 4, an isolation net 8 disposed on the upper side of the inner cavity of the heating box 4, an extruder 7 cooperating between the coating component 6 and the heating box 4, the extruder 7 cooperating with the coating component 6 to remove air bubbles from the inside of the hot melt material during heating, and a conveying component 2 cooperating with the end face of the operating table 1, the conveying component 2 cooperating with the isolation net 8 to transport the shoe sole; Among them, the isolation net 8 is made up of multiple horizontal bars, and the isolation net 8 is parallel to the conveying roller 206 and the rotating roller 602, so that the hot melt adhesive on the insole can be scraped by multiple horizontal bars during the movement of the insole, so as to achieve uniform application of hot melt adhesive on the sole. Hot melt adhesives are highly fluid after heating and are not difficult to push. Traditional hot melt adhesive sticks can drip easily under heating conditions, so heated hot melt adhesives do not have high strength. The application component 6 includes a second motor 601. The second motor 601 is installed on the outer wall of the heating box 4. A rotating roller 602 is rotatably arranged in the middle of the inner wall of the heating box 4. The power output shaft of the second motor 601 passes through the outer wall of the heating box 4 and is fixedly connected to the rotating roller 602. Gear 2 604 is rotatably installed on the inner walls of the left and right sides of the heating box 4, and gear 1 603 is installed on the outer walls of the rotating roller 602 on the left and right sides, and gear 1 603 meshes with gear 2 604. Extrusion component 7 includes a movable plate 701; A flow guide 5 is installed on the bottom surface of the heating box 4 and on the side away from the coating component 6. The coating component 6 is located between the moving plate 701 and the flow guide 5. The end face of the flow guide 5 is designed to be inclined so that when the hot melt adhesive on the isolation net 8 drips down, it flows into the heating box 4 along the flow guide 5. The flow guide 5 reduces the internal space of the heating box 4, so that the hot melt adhesive is concentrated on the front side of the heating box 4.

[0021] In this embodiment, specific references Figures 1-8 A control panel 3 is installed on the outer wall of the front side of the operating table 1. Limit rods 703 are symmetrically installed on the front side of the inner wall of the heating box 4. The moving plate 701 is slidably installed between the two limit rods 703. The left and right side walls of the moving plate 701 are in contact with the inner wall of the heating box 4 respectively. A horizontal plate 705 is installed on the upper front side of the inner wall of the heating box 4. The bottom surface of the horizontal plate 705 is in contact with the end face of the moving plate 701. A fixed frame 709 is symmetrically installed on the side of the movable plate 701 near the gear 604. A transmission rod 710 is rotatably installed on the fixed frame 709. A connecting shaft 712 is rotatably installed on the side of the transmission rod 710 away from the fixed frame 709. A transmission rod 711 is rotatably installed on the connecting shaft 712. The transmission rod 711 is rotatably installed on the gear 604. Among them, a fiber sleeve 605 is provided on the outer wall of the rotating roller 602. The fiber sleeve 605 is made of fiber velvet on its surface. When the rotating roller 602 rotates, the velvet on the fiber sleeve 605 is driven to evenly apply hot melt adhesive to the shoe sole moving on the isolation net 8. Furthermore, during the use of the device, the starting motor 601 drives the rotating roller 602 to rotate, the rotating roller 602 drives the fiber sleeve 605 to rotate to apply hot melt adhesive to the sole of the shoe on the isolation net 8, and when the rotating roller 602 rotates, the rotating roller 602 drives the gear 603 to rotate, and the gear 603 drives the gear 604 to rotate. At this time, gear 2 604 drives transmission rod 2 711 to rotate, and transmission rod 2 711 transmits transmission rod 1 710 through connecting shaft 712, thereby pushing transmission rod 1 710 to slide between the two limit rods 703.

[0022] In this embodiment, specific references Figures 1-8Multiple through holes 713 are evenly provided on the movable plate 701, and multiple mounting seats 706 are evenly provided on the side of the movable plate 701 away from the coating component 6. A circular plate 708 is rotatably mounted on the mounting base 706, and the circular plate 708 blocks the through hole 713; The mounting base 706 is provided with a connecting bracket 707, which is located above the circular plate 708. The connecting bracket 707 limits the circular plate 708 to prevent the circular plate 708 from overturning. A retaining ring 704 is installed on the outer wall of the limiting rod 703, and on the side close to the coating component 6. The retaining ring 704 prevents the moving plate 701 from falling off the limiting rod 703. Multiple discharge components 702 are evenly arranged on the bottom surface of the movable plate 701. Each discharge component 702 includes a connecting cylinder 721. Multiple connecting cylinders 721 are evenly arranged below the side wall of the movable plate 701. A connecting ring 722 is installed in the inner cavity of the connecting cylinder 721, and a connecting plate 723 is installed on the inner wall of the connecting ring 722. A limiting post 726 is installed on the side of the connecting plate 723 away from the moving plate 701. A spring 724 is installed on the side of the connecting ring 722 away from the moving plate 701. A protective sleeve 725 is fitted on the fixing ring 704. The side of the spring 724 away from the connecting ring 722 is fixedly connected to the inner wall of the protective sleeve 725. A sealing bead 727 is connected to the side of the protective sleeve 725 away from the sealing bead 727. The sealing bead 727 is slidably mounted on the limiting post 726. In a further embodiment, when the moving plate 701 moves toward the coating component 6 under the action of the coating component 6, the moving plate 701 pushes the hot melt adhesive in the heating box 4. At this time, the hot melt adhesive will push the round plate 708 to rotate around the mounting base 706, so that the hot melt adhesive can pass smoothly through the through hole 713 and reach the other side of the moving plate 701. Subsequently, when the moving plate 701 is reset under the action of gear 2 604, transmission rod 2 711, connecting shaft 712, transmission rod 1 710 and fixed frame 709, the moving plate 701 pushes the hot melt adhesive located between the moving plate 701 and the heating box 4. At this time, the force received by the circular plate 708 is opposite to that before. The circular plate 708 will then block the through hole 713, and the squeezed hot melt adhesive will be discharged through the connecting cylinder 721 to relieve pressure. When the hot melt adhesive passes through the connecting cylinder 721, it will pass through the connecting plate 723 under pressure and push the sealing bead 727 to overcome the tension of the spring 724, thus returning to the other side of the heating box 4. Because the connecting cylinder 721 restricts the flow of hot melt adhesive and applies pressure to the hot melt adhesive, it continuously applies extrusion force to the adhesive material, thereby squeezing out the air bubbles inside the hot melt adhesive and improving the density of the hot melt adhesive and the subsequent bonding and molding quality. In a further embodiment, the discharge assembly 702 may retain only the connecting cylinder 721, and other components in the discharge assembly 702 may be removed. This design can reduce the manufacturing cost of the device, and the large amount of hot melt adhesive between the moving plate 701 and the heating box 4 can still achieve a certain effect of removing air bubbles by squeezing it out from the connecting cylinder 721.

[0023] In this embodiment, specific references Figure 1 - Figure 4 The conveying assembly 2 includes a mounting frame 201, which is fixedly mounted on the end face of the operating table 1. The mounting bracket 201 is equipped with a hydraulic telescopic rod 202, and an I-beam 203 is installed at the end of the telescopic shaft of the hydraulic telescopic rod 202. The front and rear sides of the I-beam frame 203 are respectively equipped with U-beam frames 204. The side wall of the U-beam frame 204 is equipped with a motor 205. The power output shaft of the motor 205 passes through the U-beam frame 204 and is equipped with a conveyor roller 206. The conveyor roller 206 is rotatably arranged in the inner wall of the U-beam frame 204. During the use of the device, the hydraulic telescopic rod 202 is activated to drive the I-beam frame 203 and the U-beam frame 204 to descend, thereby adjusting the distance between the conveyor roller 206 and the isolation net 8, which facilitates the transportation of shoe soles of different thicknesses.

[0024] This solution is used for the hot melt adhesive coating molding equipment for sports shoe soles. When the equipment is working, motor 601 and motor 205 are started through the control panel 3. During the use of the device, the sole is placed behind the end face of the isolation net 8, and the conveying roller 206 drives the sole through the rotating roller 602. When the rotating roller 602 rotates, it drives the velvet on the fiber sleeve 605 to evenly apply hot melt adhesive to the shoe soles moving on the isolation net 8. Furthermore, during the use of the device, the starting motor 601 drives the rotating roller 602 to rotate, the rotating roller 602 drives the fiber sleeve 605 to rotate to apply hot melt adhesive to the sole of the shoe on the isolation net 8, and when the rotating roller 602 rotates, the rotating roller 602 drives the gear 603 to rotate, and the gear 603 drives the gear 604 to rotate. At this time, gear 2 604 drives transmission rod 2 711 to rotate, and transmission rod 2 711 transmits transmission rod 1 710 through connecting shaft 712, thereby pushing transmission rod 1 710 to slide between the two limit rods 703; When the moving plate 701 moves toward the coating component 6 under the action of the coating component 6, the moving plate 701 pushes the hot melt adhesive in the heating box 4. At this time, the hot melt adhesive will push the round plate 708 to rotate around the mounting base 706, so that the hot melt adhesive can pass smoothly through the through hole 713 and reach the other side of the moving plate 701. Subsequently, when the moving plate 701 is reset under the action of gear 2 604, transmission rod 2 711, connecting shaft 712, transmission rod 1 710 and fixed frame 709, the moving plate 701 pushes the hot melt adhesive located between the moving plate 701 and the heating box 4. At this time, the force on the circular plate 708 is opposite to that before. The circular plate 708 will block the through hole 713, and then the squeezed hot melt adhesive will be discharged through the connecting cylinder 721 to relieve pressure. When the hot melt adhesive passes through the connecting cylinder 721, it will pass through the connecting plate 723 under pressure and push the sealing bead 727 to overcome the tension of the spring 724, thus returning to the other side of the heating box 4. Because the connecting cylinder 721 restricts the flow of hot melt adhesive and applies pressure to the hot melt adhesive, it continuously applies extrusion force to the adhesive material, thereby squeezing out the air bubbles inside the hot melt adhesive and improving the density of the hot melt adhesive and the quality of subsequent bonding and molding.

[0025] The motor 205, motor 601, hydraulic telescopic rod 202 and control panel 3 used in this invention are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. Therefore, the structure, circuit and control principle of motor 205, motor 601, hydraulic telescopic rod 202 and control panel 3 will not be described in detail here.

[0026] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0027] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot melt adhesive coating and molding device for sports shoe soles, comprising an operating table (1), characterized in that, The operating table (1) is fitted with a heating box (4), and the heating box (4) is equipped with a coating component (6). An isolation net (8) is provided on the upper side of the inner cavity of the heating box (4). An extruder (7) is installed between the coating component (6) and the heating box (4). The extruder (7) and the coating component (6) work together to remove air bubbles from the inside of the hot melt material during heating. A conveying component (2) is installed on the end face of the operating table (1). The conveying component (2) and the isolation net (8) work together to transport the shoe sole. The coating component (6) includes a second motor (601), the second motor (601) is installed on the outer wall of the heating box (4), and a rotating roller (602) is rotatably arranged in the middle of the inner wall of the heating box (4). The power output shaft of the second motor (601) passes through the outer wall of the heating box (4) and is fixedly connected to the rotating roller (602). Gear 2 (604) is rotatably installed on the inner walls of the left and right sides of the heating box (4), and gear 1 (603) is installed on the outer walls of the rotating roller (602) on the left and right sides, and gear 1 (603) meshes with gear 2 (604); The extrusion member (7) includes a movable plate (701).

2. The hot melt adhesive coating and molding equipment for sports shoe soles according to claim 1, characterized in that: The control panel (3) is installed on the outer wall of the front side of the operating table (1). Limiting rods (703) are symmetrically installed on the front side of the inner wall of the heating box (4). The moving plate (701) is slidably installed between the two limiting rods (703). The left and right side walls of the moving plate (701) are in contact with the inner wall of the heating box (4) respectively.

3. The hot melt adhesive coating and molding equipment for sports shoe soles according to claim 2, characterized in that: A horizontal plate (705) is installed on the upper front side of the inner wall of the heating box (4), and the bottom surface of the horizontal plate (705) is in contact with the end face of the moving plate (701). A fixed frame (709) is symmetrically installed on the side of the movable plate (701) near the gear two (604). A transmission rod one (710) is rotatably installed on the fixed frame (709). A connecting shaft (712) is rotatably installed on the side of the transmission rod one (710) away from the fixed frame (709). A transmission rod two (711) is rotatably installed on the connecting shaft (712). The transmission rod two (711) is rotatably installed on the gear two (604).

4. The hot melt adhesive coating and molding equipment for sports shoe soles according to claim 3, characterized in that: The movable plate (701) is provided with a plurality of through holes (713) evenly, and a plurality of mounting seats (706) are evenly provided on the side of the movable plate (701) away from the coating component (6). A circular plate (708) is rotatably mounted on the mounting base (706), and the circular plate (708) seals the through hole (713).

5. The hot melt adhesive coating and molding equipment for sports shoe soles according to claim 4, characterized in that: The mounting base (706) is provided with a connecting frame (707), which is located above the circular plate (708). The connecting frame (707) limits the circular plate (708) to prevent the circular plate (708) from overturning.

6. The hot melt adhesive coating and molding equipment for sports shoe soles according to claim 5, characterized in that: A retaining ring (704) is installed on the outer wall of the limiting rod (703) and on the side near the coating component (6). The retaining ring (704) prevents the moving plate (701) from falling off the limiting rod (703).

7. A hot melt adhesive coating and molding device for sports shoe soles according to claim 6, characterized in that: The bottom surface of the movable plate (701) is uniformly provided with a plurality of discharge components (702). The discharge components (702) include connecting cylinders (721). The plurality of connecting cylinders (721) are uniformly arranged below the side wall of the movable plate (701). A connecting ring (722) is installed in the inner cavity of the connecting cylinder (721). A connecting plate (723) is installed on the inner wall of the connecting ring (722). A limiting post (726) is installed on the side of the connecting plate (723) away from the moving plate (701). A spring (724) is installed on the side of the connecting ring (722) away from the moving plate (701). A protective sleeve (725) is fitted on the fixing ring (704). The side of the spring (724) away from the connecting ring (722) is fixedly connected to the inner wall of the protective sleeve (725). A sealing bead (727) is connected to the side of the protective sleeve (725) away from the sealing bead (727). The sealing bead (727) is slidably disposed on the limiting post (726).

8. A hot melt adhesive coating and molding device for sports shoe soles according to claim 7, characterized in that: The conveying assembly (2) includes a mounting frame (201), which is fixedly mounted on the end face of the operating table (1); The mounting bracket (201) is provided with a hydraulic telescopic rod (202), and an I-beam (203) is installed at the end of the telescopic shaft of the hydraulic telescopic rod (202). The I-beam frame (203) is equipped with a U-beam frame (204) on its front and rear sides respectively. A motor (205) is installed on the side wall of the U-beam frame (204). The power output shaft of the motor (205) passes through the U-beam frame (204) and is equipped with a conveying roller (206). The conveying roller (206) is rotatably arranged in the inner wall of the U-beam frame (204).

Images