Gluing device for producing boot covers

Abstract

The present application belongs to the technical field of papermaking equipment, and specifically provides a gluing device for boot cover production, which comprises a glue storage assembly, a supporting assembly and a gluing assembly. The plurality of glue storage assemblies are used to respectively store glue liquid raw materials for producing boot covers and deliver the glue liquid raw materials to the gluing mechanism of the gluing assembly. In operation, the polyester mesh substrate is wound and coated on the surface of the steel mandrel at a certain tension. The gluing assembly drives the gluing mechanism to move uniformly along the axial direction of the mandrel through the translation mechanism, and the glue liquid is coated on the polyester mesh in a spiral path. The glue liquid can spread laterally and fill the blank area between the gaps of the glue strips during the uniform rotation of the mandrel, thereby making up for the small gap defects caused by non-overlapping gluing. In this way, the gluing efficiency can be improved, and the gluing can be complete without blank and leakage, which is suitable for large-scale batch production of long-width boot covers. After the glue liquid is baked and solidified, the glue layer is polished, and the finished boot cover is taken off from the mandrel.

Description

Technical Field

[0001] This application belongs to the field of papermaking equipment technology, specifically a gluing device for producing boot covers. Background Technology

[0002] Papermaking boot covers are key components in papermaking equipment. They are mainly made of polyurethane elastomer material combined with a fabric skeleton and are widely used in papermaking processes such as calendering and pressing. In existing technologies, boot covers can be produced in various ways. One method involves wrapping a polyester mesh around a steel mandrel under a certain tension, then applying polyurethane adhesive to the outside of the polyester mesh using a moving adhesive coating mechanism. After constant-temperature curing, polishing, and demolding, the finished boot cover is obtained.

[0003] Due to limitations in adhesive coating precision, equipment operational stability, and material flow characteristics, there are strict process limits on the spindle rotation speed, coating width, and axial movement speed of the coating mechanism, making high-speed operation impossible. To achieve stable adhesive coating, the axial movement speed of the coating mechanism is relatively slow, resulting in a significantly extended coating cycle for long boot covers, low production efficiency, and hindering the large-scale mass production of long boot covers. Summary of the Invention

[0004] Based on the above-mentioned technical problems, this application provides a glue-applying device for boot cover production to solve the technical problem of low glue-applying efficiency in the production of boot covers in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a glue-applying device for boot cover production, comprising: Multiple adhesive storage components are used to store and transport different adhesive raw materials; The support assembly includes a mandrel and a rotary mechanism. The mandrel is a hollow steel rotary component with a heating unit inside. The heating unit is used to regulate the outer surface temperature of the mandrel to a preset process temperature. The rotary mechanism is used to drive the mandrel to rotate uniformly around its own axis. The glue application assembly includes a glue application mechanism, a translation mechanism, and a lifting mechanism. The feed end of the glue application mechanism is connected to the discharge end of the glue storage assembly. The translation mechanism is used to drive the glue application mechanism to move axially along the mandrel. The lifting mechanism is used to drive the glue application mechanism to move along the height direction. For each rotation of the mandrel, the axial movement distance of the glue application mechanism is greater than the single glue application width of the glue application mechanism, so as to form a spiral glue strip trajectory.

[0006] In one possible implementation, the adhesive application mechanism includes: The glue gun has a mixing chamber and a glue dispensing chamber arranged from top to bottom and connected to each other. The glue dispensing chamber has a glue nozzle at the bottom. Multiple glue inlet connectors are respectively disposed on the glue gun, one end of each glue inlet connector is connected to the mixing chamber, and the other end of each glue inlet connector is connected to the discharge end of the corresponding glue storage component; and An extrusion unit, located in the mixing chamber, is used to provide a driving force that moves the adhesive towards the dispensing chamber.

[0007] In one possible implementation, the extrusion unit includes: An extrusion screw is coaxially disposed within the mixing chamber. The extrusion screw is rotatably engaged with the glue gun. The extrusion screw has multiple annular clearance grooves spaced apart from top to bottom. Protruding mixing blades are provided on the inner wall of the mixing chamber at positions corresponding to the clearance grooves. These mixing blades extend into the corresponding clearance grooves to form an interlocking structure. A first driving component, located on the glue gun, is used to drive the extrusion screw to rotate around its own axis.

[0008] In one possible implementation, the adhesive application mechanism further includes: Multiple dispensing valve assemblies, each corresponding to one of the glue storage components; each dispensing valve assembly has one inlet end and two outlet ends, the inlet end of the dispensing valve assembly is connected to the outlet end of the glue storage component, one outlet end of the dispensing valve assembly is connected to the glue inlet connector, and the other outlet end of the dispensing valve assembly is connected to the glue storage component via a glue tube; and A cleaning connector is provided on the glue gun and communicates with the mixing chamber. The cleaning connector may optionally be connected to a cleaning pipeline or a hot air pipeline.

[0009] In one possible implementation, a plurality of filter plates are provided in the dispensing chamber along the glue extrusion direction. The filter plates have filter holes, and the diameter of the filter holes of the plurality of filter plates distributed along the glue extrusion direction gradually decreases, and the filter holes are coaxially corresponding one by one.

[0010] In one possible implementation, the adhesive storage assembly includes: A glue container, having a cavity for storing glue liquid raw materials; A pumping mechanism, wherein the inlet end of the pumping mechanism extends through an inlet pipe to the lower part of the cavity of the receiving chamber, and the outlet end of the pumping mechanism is connected to the inlet end of the adhesive coating mechanism; A vacuum mechanism is used to maintain negative pressure within the receiving cavity; and An anti-oxidation protection mechanism is used to deliver inert gas into the containment cavity.

[0011] In one possible implementation, the adhesive storage assembly further includes a stirring mechanism, the stirring mechanism comprising: A rotating shaft extends vertically downward into the receiving cavity and is coaxially arranged with the receiving cavity; the feed pipe is eccentrically arranged with respect to the receiving cavity. Multiple support rods are spaced apart at the bottom end of the rotating shaft along the circumferential direction. One end of each support rod is connected to the bottom end of the rotating shaft, and the other end extends radially along the receiving cavity. Multiple vertical rods, each corresponding to a support rod, are provided. The bottom end of each vertical rod is connected to the end of the support rod furthest from the rotation axis, and the upper end of each vertical rod extends axially along the receiving cavity. The support ring is annular and connected to the upper ends of the plurality of vertical rods.

[0012] In one possible implementation, the support rod is provided with a first scraper for fitting against the bottom wall of the receiving cavity, and a plurality of the first scrapers correspond to different radial positions of the receiving cavity; the vertical rod is provided with a second scraper for fitting against the side wall of the receiving cavity, and a plurality of the second scrapers correspond to different axial positions of the receiving cavity.

[0013] In one possible implementation, the glue tank has a hollow jacket surrounding the receiving cavity, and the jacket contains a flowing heat exchange medium.

[0014] Compared with the prior art, the beneficial effects of the adhesive coating apparatus for boot cover production provided in this application are: The adhesive coating device for boot cover production provided in this application includes multiple adhesive storage components, a support component, and an adhesive coating component. The multiple adhesive storage components are used to store the adhesive raw materials for boot cover production and to transport the adhesive raw materials to the adhesive coating mechanism of the adhesive coating component. During operation, a polyester mesh substrate is wound and wrapped around the surface of a steel mandrel under a certain tension, and the mandrel and polyester mesh substrate are heated to a set temperature range by a heating unit. The adhesive coating component drives the adhesive coating mechanism to move uniformly along the axial direction of the mandrel via a translation mechanism, coating the polyester mesh with adhesive in a spiral path. The axial movement distance of the adhesive coating mechanism is greater than the width of a single application, forming a spiral adhesive strip trajectory. Compared with existing adhesive coating methods, this application eliminates the overlap allowance of the adhesive strip during coating, and increases the axial movement speed of the adhesive coating mechanism without changing the upper limit of equipment accuracy, thereby shortening the adhesive coating cycle for long boot covers and improving production efficiency. To ensure that the adhesive can uniformly cover the polyester mesh substrate, a heating unit is built into the mandrel. Heat is transferred to the adhesive through the surface of the mandrel and the polyester mesh, which improves the fluidity of the adhesive. The adhesive spreads laterally during the uniform rotation of the mandrel, filling the gaps between the adhesive strips and compensating for minor gaps caused by non-overlapping application. This design improves application efficiency and ensures complete, gap-free, and uninterrupted application, making it suitable for large-scale mass production of long boot covers. After the adhesive has cured by baking, the adhesive layer is sanded, and the finished boot cover is removed from the mandrel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the adhesive coating device for boot cover production provided in an embodiment of this application; Figure 2 A schematic diagram of the adhesive storage assembly and the adhesive coating assembly; Figure 3 A three-dimensional schematic diagram of the glue storage assembly and the glue application assembly; Figure 4 for Figure 3 Enlarged view of part A in the middle; Figure 5 This is a schematic diagram of the adhesive application mechanism; Figure 6 This is a schematic diagram of the stirring mechanism; Figure 7 A process diagram of the adhesive coating apparatus for producing boot covers provided in this application embodiment; Figure 8 This is a schematic diagram showing the arrangement of the rubber strips on the mandrel; Figure 9 This is a schematic diagram of the filter plate structure; Figure 10 A cross-sectional view of multiple filter plates stacked together; Explanation of reference numerals in the attached figures: 10. Glue storage assembly; 11. Glue tank; 12. Pumping mechanism; 13. Vacuuming mechanism; 14. Stirring mechanism; 141. Rotating shaft; 142. Support rod; 143. Vertical rod; 144. Support ring; 145. First scraper; 146. Second scraper; 20. Support assembly; 21. Mandrel; 22. Rotation mechanism; 30. Glue application assembly; 31. Glue application mechanism; 311. Glue application gun; 3111. Mixing chamber; 3112. Glue outlet chamber; 3113. Mixing blade; 312. Glue inlet connector; 313. Extrusion unit; 3131. Extrusion screw; 3132. First drive component; 314. Distributing valve assembly; 315. Cleaning connector; 316. Filter plate; 32. Translation mechanism; 33. Lifting mechanism. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Please refer to the following: Figures 1 to 10 The following describes the adhesive coating device for boot cover production provided in the embodiments of this application.

[0023] Please see Figures 1 to 4 ,as well as Figure 8 This application provides a glue-applying device for boot cover production, including a glue storage component 10, a support component 20, and a glue-applying component 30.

[0024] Multiple adhesive storage components 10 are used to store and transport different adhesive raw materials. These components 10 can be arranged side-by-side, in a ring, or in other configurations on the frame. Each component 10 independently stores one type of adhesive raw material (such as polyurethane component A, component B, catalyst, dye, or additives). The outlet of each adhesive storage component 10 is connected to the inlet of the coating mechanism 31 via a supply pipeline. The pipeline can be equipped with common components found in existing adhesive storage and transport equipment, such as flow control valves, pressure sensors, flow meters, and thermometers, to achieve precise control of the flow rate, pressure, and temperature of each adhesive component.

[0025] The support assembly 20 includes a mandrel 21 and a rotating mechanism 22. The mandrel 21 is a hollow steel rotating component, such as carbon structural steel or alloy steel. There are two mandrels 21, and the polyester mesh substrate is tensioned onto the two mandrels 21. Each mandrel 21 has a heating unit inside. The heating unit is used to regulate the outer surface temperature of the mandrel 21 to a preset process temperature, such as 40-120℃, the specific temperature range of which should be set according to the physical properties of the adhesive. The rotating mechanism 22 is used to drive the mandrel 21 to rotate uniformly around its own axis. The rotating mechanism 22 includes a drive motor, a reducer, and a transmission assembly, which transmits the power of the drive motor to the mandrel 21. The rotational speed range is such as 0.5 r / min to 10 r / min.

[0026] Optionally, the heating unit can employ heating methods for shaft parts, such as electric heating tubes, resistance heating wires, or circulating heat transfer oil heating pipes. Specifically, multiple electric heating tubes can be evenly arranged along the axial direction of the mandrel 21, each with a power of 1kW to 3kW, powered by a slip ring; the resistance heating wire can be wound around an insulating support on the inner wall of the mandrel 21; and the circulating heat transfer oil heating is connected to an external heat transfer oil heating system through rotary joints at both ends of the mandrel 21. The above structures are existing technologies for heating shaft parts and will not be described in detail here.

[0027] The adhesive application assembly 30 includes an adhesive application mechanism 31, a translation mechanism 32, and a lifting mechanism 33. The inlet end of the adhesive application mechanism 31 is connected to the outlet end of the adhesive storage assembly 10. The translation mechanism 32 drives the adhesive application mechanism 31 to move axially along the mandrel 21, and the lifting mechanism 33 drives the adhesive application mechanism 31 to move vertically. The translation mechanism 32 and the lifting mechanism 33 can use existing linear guides and drive units, enabling the adhesive application mechanism 31 to move in both horizontal and vertical directions. The translation mechanism 32 can drive the adhesive application mechanism 31 to move axially along the mandrel 21, and can also drive the adhesive application mechanism 31 to move closer to or further away from the mandrel 21 in a horizontal direction perpendicular to the mandrel 21. The lifting mechanism 33 is used to adjust the vertical height between the adhesive application mechanism 31 and the mandrel 21.

[0028] like Figure 8As shown, the black area represents the adhesive strips, and the white area represents the gaps between the adhesive strips. For each revolution of the mandrel 21, the axial movement distance of the adhesive application mechanism 31 is greater than the width of a single application, thereby forming an adhesive strip track with gaps between adjacent adhesive strips on the polyester mesh substrate on the surface of the mandrel 21.

[0029] Compared with the prior art, the beneficial effects of the adhesive coating apparatus for boot cover production provided in this application are: The adhesive coating device for boot cover production provided in this application includes multiple adhesive storage components 10, a support component 20, and an adhesive coating component 30. The multiple adhesive storage components 10 are used to store the adhesive raw materials for boot cover production and to transport the adhesive raw materials to the adhesive coating mechanism 31 of the adhesive coating component 30. During operation, a polyester mesh substrate is wound and wrapped around the surface of a steel mandrel 21 with a certain tension, and the mandrel 21 and the polyester mesh substrate are heated to a set temperature range by a heating unit. The adhesive coating component 30 drives the adhesive coating mechanism 31 to move uniformly along the axial direction of the mandrel 21 via a translation mechanism 32, coating the polyester mesh with adhesive in a spiral path. The axial movement distance of the adhesive coating mechanism 31 is greater than the width of a single application, forming a spiral adhesive strip trajectory.

[0030] Compared with existing gluing methods, this embodiment eliminates the overlap allowance of the adhesive strips during gluing. While maintaining the same upper limit of equipment precision, it increases the axial movement speed of the gluing mechanism 31, thereby shortening the gluing cycle for long boot covers and improving production efficiency. To ensure the adhesive evenly covers the polyester mesh substrate, the mandrel 21 incorporates a heating unit. Heat is transferred to the adhesive through the surface of the mandrel 21 and the polyester mesh, improving adhesive flow. The adhesive can spread laterally during the uniform rotation of the mandrel 21, filling the gaps between the adhesive strips and compensating for minor gap defects caused by non-overlapping gluing. This design improves gluing efficiency while ensuring complete, gap-free, and unreserved gluing, making it suitable for large-scale mass production of long boot covers. The support assembly 20 has a baking device outside the mandrel 21. After gluing is completed and the adhesive self-levels, the baking device is activated. After the adhesive has cured, the adhesive layer is polished, and the finished boot cover is removed from the mandrel 21.

[0031] Please see Figure 4 and Figure 5 The glue application mechanism 31 includes a glue application gun 311, a glue inlet connector 312, and an extrusion unit 313.

[0032] The glue application gun 311 has a vertically arranged cylindrical or columnar structure. Inside the glue application gun 311, from top to bottom, there are a mixing chamber 3111 and a glue dispensing chamber 3112, which are connected to each other through a narrowing or tapered transition section. The mixing chamber 3111 is cylindrical, and its inner diameter is determined according to the glue throughput. The glue dispensing chamber 3112 is located below the mixing chamber 3111, and its inner diameter can be smaller than or the same as the inner diameter of the mixing chamber 3111. The bottom of the glue dispensing chamber 3112 narrows to form a glue nozzle. The glue nozzle can be a detachable and replaceable structure, and its outlet inner diameter is determined according to the glue application width and glue flow rate, typically 1mm to 10mm. The outlet shape of the glue nozzle can be circular, flat slit-shaped, or irregularly shaped.

[0033] Multiple glue inlet connectors 312 are located on the upper side wall of the glue gun 311, communicating with the upper area of ​​the mixing chamber 3111. The number of glue inlet connectors 312 corresponds to the number of glue storage components 10, typically 2 to 4. The glue inlet connectors 312 can be quick-connect pipe connectors, threaded pipe connectors, or flanged pipe connectors, and a one-way valve can be installed inside the connector to prevent glue backflow. The other end of the glue inlet connector 312 is connected to the outlet end of the corresponding glue storage component 10 via a glue supply pipeline. A flow meter, regulating valve, and on / off valve can be installed on the glue supply pipeline to monitor and adjust the feed flow rate of each component glue in real time.

[0034] An extrusion unit 313 is disposed in the mixing chamber 3111 and is used to provide a driving force to move the adhesive liquid from the mixing chamber 3111 to the dispensing chamber 3112 and extrude it from the dispensing nozzle. The extrusion unit 313 may be a screw extrusion type, a piston pusher type, or a gear pump type.

[0035] For example, in the case of screw extrusion, please refer to [link / reference]. Figure 5 The extrusion unit 313 includes an extrusion screw 3131 and a first drive member 3132.

[0036] The extrusion screw 3131 is coaxially disposed within the mixing chamber 3111. The extrusion screw 3131 is rotatably engaged with the glue gun 311. The extrusion screw 3131 has multiple annular clearance grooves spaced apart from top to bottom; the number of clearance grooves is typically 3 to 8, and the axial distance between adjacent clearance grooves is 10 mm to 30 mm. To achieve the mixing function and mix multiple raw materials within the mixing chamber 3111, protruding mixing blades 3113 are provided on the inner wall of the mixing chamber 3111 at positions corresponding to the clearance grooves. The mixing blades 3113 can be manufactured integrally with the glue gun 311, or they can be manufactured separately and then fixed by welding.

[0037] The mixing blades 3113 extend into the corresponding clearance grooves to form an interlocking structure, forcing the adhesive to change its flow direction and velocity multiple times as it flows through the mixing chamber 3111, thereby achieving forced mixing of different component adhesives. The upper end of the extrusion screw 3131 is mounted on the top of the glue gun 311 via a bearing seat. The first drive unit 3132 is located on the glue gun 311 and is used to drive the extrusion screw 3131 to rotate around its own axis. The first drive unit 3132 is specifically a servo motor.

[0038] Please see Figure 4 , Figure 5 and Figure 7 The adhesive application mechanism 31 also includes a dispensing valve assembly 314 and a cleaning connector 315.

[0039] Multiple dispensing valve assemblies 314 correspond one-to-one with the glue storage assembly 10. Each dispensing valve assembly 314 can be a single valve body or a combination of multiple valve components. Each dispensing valve assembly 314 has one inlet end and two outlet ends, and the two outlet ends can be controlled independently to open and close. The inlet end of the dispensing valve assembly 314 is connected to the outlet end of the glue storage assembly 10. One outlet end of the dispensing valve assembly 314 is connected to the glue inlet connector 312, through which the glue is conveyed into the glue application gun 311. This outlet remains closed when no glue is being applied. The other outlet end of the dispensing valve assembly 314 is connected to the glue storage assembly 10 via a glue tube. This outlet remains normally open, forming a... Figure 7 The adhesive circulation loop shown allows the single-component raw material to be transported from the adhesive tank 11 to the dispensing valve group 314 in standby mode, and then flowed back from the dispensing valve group 314 to the adhesive tank 11. This continuous circulation keeps the material in the pipeline at a constant temperature, without stagnation or air entry, avoiding blockage of the pipe by high-viscosity raw materials, moisture absorption and deterioration. It also shortens the start-up waiting time, and adhesive application can be carried out directly after the machine is started.

[0040] A cleaning connector 315 is located on the glue gun 311 and communicates with the mixing chamber 3111. The cleaning connector 315 can optionally be connected to a cleaning pipeline or a hot air pipeline. The cleaning connector 315 can be selectively connected to a cleaning agent pipeline or a hot air pipeline through a pipeline switching structure. After production, it can be connected to the cleaning agent to rinse the mixing chamber 3111 of the glue gun 311 to flush out residual glue. After cleaning, it can be connected to the hot air to dry the residual solvent inside the chamber.

[0041] In actual production, impurities may be present in the adhesive solution. Therefore, it is necessary to install a filter mechanism before the dispensing nozzle of the glue gun 311. The impurities in the adhesive solution are physically intercepted through the tiny pores on the filter mechanism. To meet the requirements of fine filtration, the pore size is often set to be relatively small, such as 0.3-1mm.

[0042] Filter mechanisms, such as filter plate 316, can be manufactured using either drilling or laser cutting. Drilling uses an ultra-fine drill bit to create filter holes of the corresponding diameter one by one. The disadvantage is that the ultra-fine drill bit is prone to wear and even breakage during processing, increasing material costs. While laser cutting is more efficient and less expensive, it essentially melts the material on the plate at high temperatures to form holes, which cannot achieve the precision of drilling, resulting in poorer hole diameter accuracy. If the plate is designed to be thinner to improve laser cutting precision, it faces the disadvantages of easy wear and short service life.

[0043] To resolve the above issues, please refer to Figure 9 and Figure 10 In this embodiment, multiple filter plates 316 are provided in the dispensing chamber 3112 along the glue extrusion direction. The number of filter plates 316 is typically 2 to 4, and the material can be stainless steel. The multiple filter plates 316 are fixedly connected by screws, rivets, or other structures, and stacked to form a plate-shaped or block-shaped component. The filter plates 316 have filter holes, and the diameter of the filter holes in the multiple filter plates 316 distributed along the glue extrusion direction gradually decreases, and the filter holes are coaxially corresponding one by one.

[0044] The existing single plate-shaped filter mechanism is designed as a split type. The thickness of a single filter plate 316 is thinner, making the processing simpler. When multiple filter plates 316 are stacked together, they have high rigidity and wear resistance, and a long service life.

[0045] Please see Figure 2 and Figure 3 The glue storage assembly 10 includes a glue tank 11, a pumping mechanism 12, a vacuuming mechanism 13, and an anti-oxidation protection mechanism.

[0046] The glue tank 11 is a vertical cylindrical container made of stainless steel, with a cavity for storing glue raw materials. The glue tank 11 has a hollow jacket around the cavity, and the jacket contains a flowing heat exchange medium, such as steam or heat transfer oil, to keep the cavity warm and maintain a constant internal temperature range.

[0047] The pumping mechanism 12 can be a gear pump, screw pump, plunger pump, or diaphragm pump, etc. The feed end of the pumping mechanism 12 extends to the lower part of the receiving cavity through a feed pipe, and the discharge end of the pumping mechanism 12 is connected to the feed end of the coating mechanism 31. The vacuum mechanism 13 is used to maintain negative pressure in the receiving cavity to perform vacuum degassing treatment on the adhesive liquid and remove air bubbles mixed in the adhesive liquid. The anti-oxidation protection mechanism is used to supply inert gas, such as nitrogen, into the receiving cavity to prevent the adhesive liquid raw material from reacting with oxygen and moisture in the air and deteriorating.

[0048] During production, the adhesive liquid is degassed under vacuum using a vacuum pumping mechanism 13. During shutdown, an anti-oxidation protection mechanism fills the containment chamber with inert gas to isolate it from external air.

[0049] Please see Figure 2 and Figure 6 The glue storage assembly 10 also includes a stirring mechanism 14, which includes a rotating shaft 141, multiple support rods 142, multiple vertical rods 143, and a support ring 144.

[0050] The rotating shaft 141 extends vertically downward into the receiving cavity and is coaxially arranged with the cavity. The feed pipe is eccentrically arranged with the receiving cavity. The second driving component is a motor, which drives the rotating shaft 141 to rotate at a preset speed. Multiple support rods 142 are spaced apart at the bottom end of the rotating shaft 141 along the circumferential direction. One end of the support rod 142 is connected to the bottom end of the rotating shaft 141, and the other end extends radially along the receiving cavity. Multiple vertical rods 143 correspond one-to-one with the support rods 142. The bottom end of the vertical rod 143 is connected to the end of the support rod 142 away from the rotating shaft 141, and the upper end of the vertical rod 143 extends axially along the receiving cavity. The support ring 144 is annular and is connected to the upper ends of the multiple vertical rods 143, connecting the upper ends of the multiple vertical rods 143 into one unit, improving the overall rigidity and structural stability of the stirring mechanism 14. The stirring mechanism 14 forms a cage-like structure and rotates around the axis of the receiving cavity under the drive of the rotating shaft 141, performing all-round stirring of the adhesive liquid in the receiving cavity. The feed pipe passes through the inner hole of the support ring 144 and does not affect the operation of the stirring mechanism 14.

[0051] Please see Figure 6 The support rod 142 is provided with a first scraper 145 for fitting against the bottom wall of the receiving cavity, and multiple first scrapers 145 correspond to different radial positions of the receiving cavity; the vertical rod 143 is provided with a second scraper 146 for fitting against the side wall of the receiving cavity, and multiple second scrapers 146 correspond to different axial positions of the receiving cavity.

[0052] The first scraper 145 and the second scraper 146 can be made of polytetrafluoroethylene (PTFE) and are used to scrape off adhesive material adhering to the bottom or side walls of the receiving cavity to prevent the adhesive from remaining and curing for a long time. Multiple first scrapers 145 and second scrapers 146 are provided, and each first scraper 145 and second scraper 146 is relatively short, making it easy to replace if damaged.

[0053] It should be noted that the core innovation of this application lies in the innovative mechanical structure, spatial layout, and interconnection and coordination of the aforementioned physical components. The aim is to solve the technical problem of "low glue application efficiency in the production of boot covers" mentioned in the background art through structural integration and optimization. As for the specific controllers and control schemes used to coordinate the operation of these components—such as the type of PLC or industrial computer used as the main control unit, the specific design of the acquisition and processing circuits for each sensor signal, the specific implementation methods of the drive circuits for each actuator (e.g., motor drivers, heating power adjustment modules, pneumatic solenoid valve drive circuits), and the control algorithms and program code for achieving functions such as closed-loop PID control of temperature, precise speed control, synchronous coordination control of moving and rotating speeds, precise control of pump flow rate, automatic vacuum maintenance, and automatic inert gas replenishment—all of these are widely known and mature technologies in this field.

[0054] Therefore, even though this application does not provide a detailed description of the controller's internal circuit structure, specific component selection, control program code, and other details, it does not affect the understanding, reproduction, and implementation of the hardware structure scheme claimed in this application by those skilled in the art, and the integrity of the technical solution remains unaffected. The mechanical structures and connection relationships in the various implementations described in this application constitute a complete technical solution, and those skilled in the art can assemble, debug, and operate the device according to the description in the specification.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gluing device for producing a bootie, characterized by, include: Multiple adhesive storage components (10) are used to store and transport different adhesive raw materials; The support assembly (20) includes a mandrel (21) and a rotary mechanism (22). The mandrel (21) is a hollow steel rotary component, and the mandrel (21) has a heating unit inside. The heating unit is used to regulate the outer surface temperature of the mandrel (21) to a preset process temperature. The rotary mechanism (22) is used to drive the mandrel (21) to rotate uniformly around its own axis. The glue application assembly (30) includes a glue application mechanism (31), a translation mechanism (32), and a lifting mechanism (33). The feeding end of the glue application mechanism (31) is connected to the discharge end of the glue storage assembly (10). The translation mechanism (32) is used to drive the glue application mechanism (31) to move axially along the mandrel (21). The lifting mechanism (33) is used to drive the glue application mechanism (31) to move along the height direction. For each rotation of the mandrel (21), the axial movement distance of the glue application mechanism (31) is greater than the single glue application width of the glue application mechanism (31) to form a spiral glue strip trajectory.

2. The gluing device for producing a bootie according to claim 1, wherein The adhesive application mechanism (31) includes: The glue gun (311) has a mixing chamber (3111) and a glue dispensing chamber (3112) arranged from top to bottom and connected to each other. The glue dispensing chamber (3112) has a glue dispensing nozzle at the bottom. Multiple glue inlet connectors (312) are respectively provided on the glue gun (311). One end of each glue inlet connector (312) is connected to the mixing chamber (3111), and the other end of each glue inlet connector (312) is connected to the discharge end of the corresponding glue storage component (10). An extrusion unit (313), located in the mixing chamber (3111), is used to provide a driving force for moving the adhesive liquid toward the dispensing chamber (3112).

3. The gluing device for producing a bootie according to claim 2, wherein The extrusion unit (313) includes: An extrusion screw (3131) is coaxially disposed within the mixing chamber (3111). The extrusion screw (3131) is rotatably engaged with the glue gun (311). The extrusion screw (3131) has multiple annular clearance grooves spaced apart from top to bottom. Protruding mixing blades (3113) are provided on the inner wall of the mixing chamber (3111) at positions corresponding to the clearance grooves. The mixing blades (3113) extend into the corresponding clearance grooves to form an interlocking structure. The first driving component (3132) is disposed on the glue gun (311) and is used to drive the extrusion screw (3131) to rotate around its own axis.

4. The gluing device for producing a bootie according to claim 2, wherein The adhesive application mechanism (31) further includes: Multiple dispensing valve assemblies (314) correspond one-to-one with the glue storage assembly (10); each dispensing valve assembly (314) has one inlet end and two outlet ends. The inlet end of the dispensing valve assembly (314) is connected to the outlet end of the glue storage assembly (10), one outlet end of the dispensing valve assembly (314) is connected to the glue inlet connector (312), and the other outlet end of the dispensing valve assembly (314) is connected to the glue storage assembly (10) via a glue tube; and A cleaning connector (315) is provided on the glue gun (311) and communicates with the mixing chamber (3111). The cleaning connector (315) may optionally be communicated with a cleaning pipeline or a hot air pipeline.

5. The gluing device for producing a bootie according to claim 2, wherein The dispensing chamber (3112) is provided with a plurality of filter plates (316) along the glue extrusion direction. The filter plates (316) have filter holes. The diameter of the filter holes of the plurality of filter plates (316) distributed along the glue extrusion direction gradually decreases, and the filter holes are coaxially corresponding.

6. The gluing device for producing a bootie according to claim 1, wherein The adhesive storage assembly (10) includes: The glue container (11) has a cavity for storing the glue liquid raw material; The pumping mechanism (12) has its inlet end extending through a feed pipe to the lower part of the cavity of the receiving chamber, and its outlet end is connected to the inlet end of the glue coating mechanism (31). A vacuum pumping mechanism (13) is used to maintain a negative pressure within the receiving cavity; and An anti-oxidation protection mechanism is used to deliver inert gas into the containment cavity.

7. The gluing device for producing a bootie according to claim 6, wherein The adhesive storage assembly (10) further includes a stirring mechanism (14), which includes: A rotating shaft (141) extends vertically downward into the receiving cavity and is coaxially arranged with the receiving cavity; the feed pipe is eccentrically arranged with respect to the receiving cavity. Multiple support rods (142) are spaced apart at the bottom end of the rotating shaft (141) along the circumferential direction. One end of each support rod (142) is connected to the bottom end of the rotating shaft (141), and the other end extends radially along the receiving cavity. Multiple vertical rods (143) correspond one-to-one with the support rod (142). The bottom end of each vertical rod (143) is connected to the end of the support rod (142) away from the rotation axis (141), and the upper end of each vertical rod (143) extends axially along the receiving cavity; and The support ring (144) is annular and connected to the upper ends of the plurality of vertical rods (143).

8. The gluing device for producing a bootie according to claim 7, wherein The support rod (142) is provided with a first scraper (145) for fitting against the bottom wall of the receiving cavity, and multiple first scrapers (145) correspond to different radial positions of the receiving cavity; the vertical rod (143) is provided with a second scraper (146) for fitting against the side wall of the receiving cavity, and multiple second scrapers (146) correspond to different axial positions of the receiving cavity.

9. The gluing device for producing a bootie according to claim 7, wherein The glue tank (11) has a hollow jacket surrounding the receiving cavity, and the jacket contains a flowing heat exchange medium.

Images