Automatic sole gluing machine

Abstract

The utility model discloses an automatic sole gluing machine which comprises a gluing machine base, a sole conveying belt is assembled on the gluing machine base, and a gluing frame is assembled in the center of the upper end of the gluing machine base. A glue outlet bag is assembled at the bottom end of the gluing frame, and shoe sole fixing molds are uniformly assembled at the upper end of the shoe sole conveying belt at equal intervals; glue outlets are evenly formed in the bottom end of the glue outlet bag from left to right at equal intervals, and glue outlet pipes are assembled in the glue outlets. According to the automatic shoe sole gluing machine, the shoe sole fixing molds are evenly assembled on the shoe sole conveying belt at equal intervals, shoe soles of different specifications can be stably fixed, and it is guaranteed that the shoe soles cannot move in the gluing process. Glue outlets are evenly formed in the bottom end of the glue outlet bag from left to right at equal intervals, glue outlet pipes are assembled, and comprehensive and even gluing of the shoe soles can be achieved in cooperation with conveying of the shoe sole fixing mold.

Description

Technical Field

[0001] This utility model relates to the field of glue coating machine technology, specifically to an automatic glue coating machine for shoe soles. Background Technology

[0002] In the footwear manufacturing process, sole adhesive application is a crucial step in ensuring a strong bond between the upper and the sole. Traditional sole adhesive application relies heavily on manual labor, with workers using hand-held adhesive tools to apply the adhesive to the sole. This method is not only labor-intensive but also makes it difficult to guarantee the uniformity of the adhesive application, easily leading to problems such as missed areas, excessive application, or inconsistent adhesive thickness. These issues directly affect the bonding quality and lifespan of subsequent footwear products.

[0003] With the automation development of the footwear industry, some semi-automatic glue application equipment has gradually been put into use. However, existing equipment still has many shortcomings in practical applications. Some automatic glue application equipment has a fixed glue dispensing structure, making it impossible to flexibly adjust the glue dispensing position and amount according to the shape and size of different shoe soles, resulting in poor applicability. During the glue dispensing process, glue leakage is prone to occur, causing glue waste and also polluting the equipment and production environment. In addition, the glue replenishment and component maintenance processes are cumbersome, affecting production efficiency. Therefore, developing an automatic shoe sole glue application machine that can achieve precise and uniform glue application, and is easy to operate and maintain, has become an urgent need in the industry. Utility Model Content

[0004] The purpose of this invention is to provide an automatic glue applicator for shoe soles to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic shoe sole gluing machine, comprising a gluing machine base, a shoe sole conveyor belt mounted on the gluing machine base, and a gluing frame mounted at the upper center of the gluing machine base; a dispensing capsule mounted at the bottom end of the gluing frame, and shoe sole fixing molds uniformly and equidistantly mounted on the upper end of the shoe sole conveyor belt; glue outlets uniformly and equidistantly opened from left to right at the bottom end of the dispensing capsule, and a glue dispensing tube mounted inside the glue outlet; a glue inlet through hole opened on the outer wall of the glue dispensing tube inside the glue outlet, and a return spring fitted on the outer side of the glue dispensing tube at the bottom end of the glue outlet; and sealing ring plates fitted on both the inner and outer ends of the glue dispensing tube at the glue outlet.

[0006] As a preferred embodiment of the automatic glue applicator for shoe soles of this utility model, the top of the dispensing capsule is equipped with a glue-filling tube, the top of the glue applicator frame is equipped with a glue storage box, the output end of the glue storage box is equipped with a telescopic connecting tube, and a sealing cap is installed between the telescopic connecting tube and the glue-filling tube.

[0007] As a preferred embodiment of the automatic glue applicator for shoe soles according to this utility model, the inner wall of the sealing cover is provided with an internal thread, the outer wall of the glue-applying tube is provided with an external thread, the internal thread and the external thread cooperate, and a limit ring plate is fitted on one end of the telescopic tube located inside the sealing cover.

[0008] As a preferred embodiment of the automatic shoe sole gluing machine of this utility model, the outer end of the telescopic connecting tube located inside the sealing connecting cover is fitted with a sealing ring a and a sealing ring b.

[0009] As a preferred embodiment of the automatic adhesive applicator for shoe soles according to this utility model, rubber blocks are installed at the edge between the sealing ring a and the sealing ring b, and at equal intervals along their axis.

[0010] As a preferred embodiment of the automatic shoe sole coating machine of this utility model, a cylinder is installed at the center of the top of the coating frame, a pneumatic telescopic rod is assembled at the driving end of the cylinder, and the top of the dispensing capsule is connected to the end of the pneumatic telescopic rod.

[0011] In a preferred embodiment of the automatic shoe sole gluing machine of this utility model, an asynchronous motor is mounted on the side wall of the gluing frame, and the drive end of the shoe sole conveyor belt is connected to the asynchronous motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the setting of this automatic shoe sole gluing machine has a reasonable structural design;

[0013] This automatic sole gluing machine uses sole fixing molds evenly spaced on a sole conveyor belt to stably fix soles of different specifications, ensuring that the soles do not shift during the gluing process. The bottom of the dispensing capsule has glue outlets evenly spaced from left to right and is equipped with glue dispensing tubes. Combined with the conveying action of the sole fixing molds, this allows for comprehensive and uniform gluing of the soles, effectively avoiding problems such as missed or excessive coating that occur with manual gluing or traditional equipment, significantly improving the stability of the gluing quality.

[0014] The glue dispensing tube has a glue inlet hole inside the glue outlet on its outer wall. A return spring is fitted at the bottom of the glue outlet. When the shoe sole is conveyed to the bottom of the glue dispensing tube by the conveyor belt, the shoe sole pushes up the glue dispensing tube, exposing the glue inlet hole. The glue enters the glue dispensing tube through the glue inlet hole and coats the shoe sole. When the shoe sole leaves, the glue dispensing tube returns to its original position under the action of the return spring, the glue inlet hole is sealed, and glue dispensing stops. This structure can automatically adjust the extension length of the glue dispensing tube according to the thickness of the shoe sole, achieving adaptive glue dispensing and adapting to the glue application needs of shoe soles of different thicknesses, thus enhancing the versatility of the equipment. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the capsule of this utility model;

[0017] Figure 3 This is a schematic diagram of the interior of the capsule of this utility model;

[0018] Figure 4 This is a schematic diagram of the adhesive filling tube, sealing cap, and telescopic connecting tube of this utility model.

[0019] In the diagram: 1. Glue applicator base; 2. Shoe sole conveyor belt; 3. Asynchronous motor; 4. Shoe sole fixing mold; 5. Glue applicator frame; 6. Cylinder; 7. Glue storage box; 8. Capsule outlet; 9. Pneumatic telescopic rod; 10. Sealing cover; 11. Telescopic connecting pipe; 12. Feeding pipe; 13. Glue outlet; 14. Glue outlet tube; 15. Return spring; 16. Glue inlet hole; 17. Sealing ring plate; 18. External thread; 19. Internal thread; 20. Limiting ring plate; 21. Rubber ring a; 22. Rubber block; 23. Rubber ring b. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution:

[0022] In this technical solution, an automatic shoe sole gluing machine includes a gluing machine base 1, on which a shoe sole conveyor belt 2 is mounted. A gluing frame 5 is mounted at the upper center of the gluing machine base 1. An outlet capsule 8 is mounted at the bottom of the gluing frame 5. Shoe sole fixing molds 4 are evenly and equidistantly mounted on the upper end of the shoe sole conveyor belt 2. An outlet 13 is evenly and equidistantly opened from left to right at the bottom of the outlet capsule 8. An outlet tube 14 is mounted inside the outlet 13. An inlet hole 16 is opened on the outer wall of the outlet tube 14 inside the outlet 13. A return spring 15 is fitted on the outside of the outlet tube 14 at the bottom of the outlet 13. Sealing ring plates 17 are fitted on both the inner and outer ends of the outlet tube 14 at the outlet 13.

[0023] The base 1 of the glue applicator serves as the fundamental support structure for the entire equipment. It is typically made of high-strength steel to ensure stable support for other components and various forces generated during the glue application process, preventing equipment swaying or displacement from affecting the glue application accuracy. Its dimensions are determined based on the actual production site space and the length and width of the compatible shoe sole conveyor belt 2, with sufficient space generally reserved for installation and maintenance.

[0024] The shoe sole conveyor belt 2 is a key component for automated shoe sole transport. It is typically made of rubber or high-strength plastic, offering a degree of flexibility and abrasion resistance. Its width is designed based on the maximum width of common shoe soles, usually exceeding it by 10-20 cm to ensure stability during transport and prevent slippage. The conveyor belt speed is adjustable via a frequency converter, generally ranging from 0.5 to 3 meters per minute, to accommodate varying production efficiency requirements and different adhesive application processes.

[0025] The glue applicator 5 is installed at the upper center of the glue applicator base 1, serving to support and position the glue applicator components such as the capsule 8. It typically uses a metal frame structure with sufficient strength and rigidity to ensure that it does not deform or wobble during the glue applicator 8 process. The height of the glue applicator 5 is designed to maintain a suitable distance between the sole on the sole fixing mold 4 and the glue outlet tube 14 of the capsule 8 for optimal glue application. This distance is usually between 1 and 5 centimeters, and the specific value can be fine-tuned according to different sole materials and the required glue thickness.

[0026] The dispensing capsule 8 is the core component for storing and dispensing the adhesive solution. It is typically made of corrosion-resistant metal materials such as stainless steel to prevent the adhesive solution from corroding it and affecting its service life. Its internal design includes a certain amount of adhesive storage space; the storage capacity is generally determined by the production scale and adhesive change cycle of the equipment. Smaller equipment may have a dispensing capsule capacity of 1-5 liters, while larger equipment can reach 10-20 liters. The dispensing capsule 8 is generally rectangular or cylindrical in shape for easy installation and connection to other components.

[0027] The sole fixing molds 4 are evenly and equidistantly assembled on the sole conveyor belt 2 to securely fix the soles and ensure that they do not shift during the gluing process. The fixing molds are typically made of rubber or polyurethane materials with a certain degree of elasticity and wear resistance, which can firmly fix the soles without damaging the sole surface. The shape and size of the molds are designed according to the styles and sizes of common soles. They can be designed as universal molds to adapt to various common sole shapes, or customized molds can be made for specific sole styles. The assembly spacing of the molds on the conveyor belt needs to be determined according to the length of the sole and the requirements of the gluing process. Generally, the spacing is 2-5 cm longer than the sole length to ensure sufficient space for gluing during conveying and to avoid interference between adjacent soles.

[0028] An ultrasonic liquid level sensor is used on capsule 8 to monitor the liquid level inside capsule 8 in real time. When the liquid level is lower than the set lower limit, the control system will issue an alarm to remind the operator to replenish the liquid in time, so as to ensure the continuity of the coating process.

[0029] The glue outlets 13 are evenly spaced at the bottom of the glue outlet capsule 8. Their number and spacing are determined based on the width of the sole and the required uniformity of glue application. Generally, for a standard-width sole, there may be 5-10 glue outlets, spaced 2-5 cm apart. The diameter of the glue outlets is typically 0.5-1 cm to ensure smooth glue flow and appropriate glue output. The glue tube 14 is fitted inside the glue outlets 13 and is generally made of corrosion-resistant and wear-resistant plastic or metal materials, such as polytetrafluoroethylene (PTFE) or stainless steel. The length of the glue tube 14 needs to be determined based on the distance between the glue outlet and the sole, as well as the working stroke of the tube. It is generally 1-2 cm longer than the distance from the glue outlet to the sole to ensure stable glue application to the sole during the up-and-down movement of the tube 14.

[0030] To better control the amount of adhesive dispensed, a flow control solenoid valve can be installed inside the adhesive dispensing tube 14. By adjusting the opening of the flow control valve, the speed and amount of adhesive flowing out of the adhesive dispensing tube 14 can be precisely controlled to meet the different requirements of adhesive dispensing for different shoe sole materials and adhesive application processes. A sealing gasket is installed at the connection between the adhesive outlet 13 and the adhesive dispensing tube 14. The sealing gasket is generally made of rubber or silicone, which further enhances the sealing performance at the connection and prevents adhesive leakage.

[0031] The glue inlet hole 16 is located on the outer wall of the glue outlet tube 14, within the glue outlet 13. Its function is to allow glue to enter the glue outlet tube 14 through the glue inlet hole 16 when the glue outlet tube 14 is lifted by the sole, and then coat the sole. The number and size of the glue inlet holes 16 are designed according to the required glue volume, generally 3-5 holes with a diameter between 0.2-0.5 cm. The return spring 15 is fitted onto the outside of the glue outlet tube 14 at the bottom of the glue outlet 13. When the sole is removed, the return spring 15 provides an upward elastic force, causing the glue outlet tube 14 to quickly return to its original position, closing the glue inlet hole 16 and stopping glue dispensing. The elastic coefficient of the return spring 15 needs to be selected based on the weight of the glue outlet tube 14 and the required return force, generally between 5-15 N / cm, to ensure reliable return of the glue outlet tube 14.

[0032] When manufacturing the glue tube 14, a high-precision machining process and CNC machining are used to ensure that the positional accuracy of the glue inlet hole 16 is within ±0.1 mm, so as to ensure that the glue inlet amount of each glue tube 14 is uniform and consistent, thereby achieving uniform glue coating on the shoe sole.

[0033] The sealing ring plate 17 is fitted onto the outside of the dispensing tube 14, located at both the inner and outer ends of the dispensing port 13, serving a sealing function to prevent adhesive leakage from the gap between the dispensing port 13 and the dispensing tube 14. The sealing ring plate 17 is generally made of materials with good sealing properties, such as rubber or silicone. Its inner diameter is slightly smaller than the outer diameter of the dispensing tube 14, and its outer diameter is slightly larger than the inner diameter of the dispensing port 13, to ensure a tight fit. The thickness of the sealing ring plate 17 is generally between 0.5 and 1 cm, providing a certain degree of elasticity while ensuring a good seal, accommodating minor displacements of the dispensing tube 14 during operation.

[0034] In some technical solutions, the top of the capsule 8 is equipped with a glue-filling tube 12, the top of the glue-applying frame 5 is equipped with a glue storage box 7, the output end of the glue storage box 7 is equipped with a telescopic connecting tube 11, and a sealing cap 10 is installed between the telescopic connecting tube 11 and the glue-filling tube 12.

[0035] The glue-filling tube 12 is mounted at the top of the dispensing capsule 8 and is used to replenish the glue solution into the dispensing capsule 8. Its material is generally the same as that of the dispensing capsule 8, a corrosion-resistant metal. The diameter of the glue-filling tube 12 is determined according to the required glue-filling speed, generally between 1-2 cm, to ensure that the glue solution in the dispensing capsule 8 can be replenished to the appropriate level in a short time. The glue storage box 7 is installed at the top of the glue-applying rack 5 and is used to store a large amount of glue solution. Its material is also corrosion-resistant. The storage capacity is determined according to the production scale and cycle of the equipment; the storage box capacity for small equipment may be 10-50 liters, while for large equipment it can reach 100-500 liters. The glue storage box 7 is generally designed with a level display device to allow operators to monitor the glue level in real time.

[0036] The telescopic connecting pipe 11 connects the output end of the glue storage box 7 and the glue filling pipe 12. Its function is to ensure that the delivery of glue is not affected when the capsule 8 moves up and down to apply glue. The telescopic connecting pipe 11 is generally made of metal corrugated pipe or rubber telescopic pipe, which has good flexibility and telescopic performance. Its telescopic length is determined according to the maximum movement stroke of the capsule 8, and is generally 5-10 cm longer than the maximum movement stroke of the capsule 8. The sealing cap 10 is used to connect the telescopic connecting pipe 11 and the glue filling pipe 12 and ensure the sealing of the connection. The sealing cap 10 is generally made of metal and is tightly connected to the telescopic connecting pipe 11 and the glue filling pipe 12 by threaded connection or snap-fit ​​connection.

[0037] A heating and stirring device is installed inside the glue storage box 7. For some glue solutions that need to maintain fluidity at specific temperatures, the heating device can heat the glue solution in the storage box 7 to a suitable temperature, generally between 20-60℃, which can be precisely controlled by a temperature controller. The stirring device can prevent sedimentation or stratification of the glue solution during storage. The stirring device generally uses a motor-driven stirring paddle, and the stirring speed can be adjusted according to the characteristics of the glue solution. A flow monitoring device is installed on the telescopic connecting pipe 11. The flow monitoring device is an electromagnetic flow meter, which can monitor the flow rate of the glue solution from the storage box 7 to the outlet capsule 8 in real time, so that operators can understand the glue supply status of the equipment and promptly detect abnormal glue supply problems.

[0038] In some technical solutions, the inner wall of the sealing cover 10 is provided with an internal thread 19, and the outer wall of the glue-filling tube 12 is provided with an external thread 18. The internal thread 19 and the external thread 18 are matched, and the end of the telescopic tube 11 located inside the sealing cover 10 is fitted with a limiting ring plate 20.

[0039] The mating of the internal thread 19 and the external thread 18 enables a tight threaded connection between the sealing cap 10 and the filling tube 12. This connection method offers the advantages of convenient installation and disassembly, facilitating operation during equipment maintenance or component replacement. The specifications of the internal thread 19 and the external thread 18 are determined based on the diameter of the filling tube 12 and the required connection strength, generally using standard metric threads such as M16 or M20. The limiting ring 20 is fitted onto one end of the telescopic connecting tube 11 located inside the sealing cap 10. Its function is to prevent excessive movement of the telescopic connecting tube 11 within the sealing cap 10, ensuring the connection stability between the telescopic connecting tube 11 and the sealing cap 10. The limiting ring 20 is generally made of metal, with an outer diameter slightly smaller than the inner diameter of the sealing cap 10 and an inner diameter slightly larger than the outer diameter of the telescopic connecting tube 11, and a thickness between 0.5 and 1 cm.

[0040] Applying sealant to the threaded connection can further enhance the sealing of the threaded connection and prevent sealant leakage.

[0041] When installing the sealing cover 10, first apply sealant evenly to the external thread of the glue-filling tube 12, and then tighten the sealing cover 10. Since the limiting ring plate 20 will generate a certain amount of friction with the inner wall of the sealing cover 10 during the operation of the equipment, wear-resistant treatment is performed on the surface of the limiting ring plate 20. Chrome plating can improve the service life of the limiting ring plate 20 and reduce connection instability caused by wear.

[0042] In some technical solutions, the outer end of the telescopic connecting pipe 11 located inside the sealing connecting cover 10 is fitted with a sealing ring a21 and a sealing ring b23.

[0043] Sealing rings a21 and b23 are fitted onto the outside of the telescopic connecting pipe 11, located at one end inside the sealing cover 10, further enhancing the sealing performance between the telescopic connecting pipe 11 and the sealing cover 10. Sealing rings a21 and b23 are generally made of sealing materials such as rubber or silicone. Their inner diameter fits tightly with the outer diameter of the telescopic connecting pipe 11, and their outer diameter fits tightly against the inner wall of the sealing cover 10. The thickness of sealing rings a21 and b23 is generally between 0.3 and 0.5 cm. Through this double-sealing structure, leakage of adhesive from the gap between the telescopic connecting pipe 11 and the sealing cover 10 can be effectively prevented.

[0044] In some technical solutions, rubber blocks 22 are installed at the edge between sealing ring a21 and sealing ring b23, and at equal intervals along their axis.

[0045] Rubber blocks 22 are evenly and equidistantly installed at the edges between sealing rings a21 and b23 and distributed along their axis. Their function is to provide cushioning and support between sealing rings a21 and b23, while further enhancing the sealing effect. Rubber blocks 22 are generally made of rubber material with high elasticity and wear resistance. Their shape is generally cuboid or cylindrical, and their dimensions are determined according to the gap between sealing rings a21 and b23. Generally, the length or diameter is between 0.5-1 cm, and the height is between 0.3-0.5 cm. The number of rubber blocks 22 is determined according to the circumference of the sealing rings, and generally one is installed every 1-2 cm.

[0046] Since the adhesive may have a certain degree of chemical corrosiveness, the material of rubber block 22 is regularly tested for chemical corrosion resistance to ensure that it will not swell or age under long-term contact with the adhesive, thus ensuring its stable performance.

[0047] In some technical solutions, a cylinder 6 is installed at the center of the top of the glue applicator 5, and a pneumatic telescopic rod 9 is assembled at the drive end of the cylinder 6. The top of the capsule 8 is connected to the end of the pneumatic telescopic rod 9.

[0048] Cylinder 6 is installed at the top center of the glue applicator 5, serving as the power source for driving the capsule 8 to move up and down for glue application. Cylinder 6 is typically a double-acting cylinder, providing stable thrust and pull. Its working pressure is determined based on the weight of the capsule 8 and the required glue application pressure, generally ranging from 0.4 to 0.8 MPa. A pneumatic telescopic rod 9 connects the drive end of cylinder 6 to the top of capsule 8, transmitting the power from cylinder 6 to capsule 8 to achieve its up-and-down movement. The pneumatic telescopic rod 9 is generally made of high-strength metal.

[0049] In some technical solutions, the side wall of the glue applicator 5 is equipped with an asynchronous motor 3, and the drive end of the shoe sole conveyor belt 2 is connected to the asynchronous motor 3.

[0050] The asynchronous motor 3 is controlled by the controller, which in turn controls the conveying of the shoe sole conveyor belt 3, and the shoe sole fixing mold can be accurately moved to the lower end of the capsule.

[0051] I. Overview of the Overall Work Process

[0052] The automatic shoe sole gluing machine achieves an automated production process from sole conveying and glue supply to precise glue application through the coordinated operation of its various components. Its core principle is to utilize mechanical transmission, pneumatic control, and fluid transport technology to stably and evenly coat the shoe sole surface with glue, meeting the quality and efficiency requirements for sole gluing in shoe manufacturing.

[0053] II. Detailed Working Process and Principles

[0054] Shoe sole conveying stage: The operator places the shoe sole to be glued into the shoe sole fixing mold 4 on the shoe sole conveyor belt 2. The shoe sole fixing mold 4 is made of elastic and wear-resistant materials such as rubber or polyurethane, which can firmly fix it according to the shape and size of the shoe sole, preventing displacement during conveying and glue application. The asynchronous motor 3 mounted on the side wall of the glue application rack 5 starts, providing power to the shoe sole conveyor belt 2, driving the conveyor belt to run smoothly at a set speed (generally between 0.5-3 meters per minute), conveying the shoe sole fixing mold 4 containing the shoe sole to the glue application area below the glue application rack 5. During the conveying process, the shoe sole conveyor belt 2 can maintain a suitable tension through a screw-type or counterweight tensioning device to avoid slackness and slippage, ensuring the accuracy and continuity of the conveying.

[0055] Adhesive preparation stage: Before starting the equipment, the operator adds adhesive to the dispensing capsule 8 through the adhesive filling tube 12, while the adhesive storage box 7 stores sufficient adhesive. The adhesive storage box 7 and the dispensing capsule 8 are connected by a telescopic connecting tube 11 and a sealing cap 10. The internal thread 19 on the inner wall of the sealing cap 10 fits tightly with the external thread 18 on the outer wall of the adhesive filling tube 12. The sealing rings a21 and b23 at the end of the telescopic connecting tube 11, as well as the rubber block 22 between them, form a multiple sealing structure to ensure that the adhesive does not leak during transportation. If a heating and stirring device is installed in the adhesive storage box 7, for adhesives that require a specific temperature to maintain fluidity, the heating device will heat the adhesive to a suitable temperature of 20-60℃, and the stirring device will rotate the stirring paddle driven by a motor to prevent the adhesive from settling or separating, ensuring the stability of the adhesive performance.

[0056] Adhesive delivery stage: When the adhesive level in the dispensing capsule 8 falls below the set lower limit, the level detection device (such as an ultrasonic level sensor or a float level sensor) sends a signal, and the control system controls the storage box 7 to begin delivering adhesive to the dispensing capsule 8. The adhesive flows out from the output end of the storage box 7, passes through the telescopic connecting pipe 11, the sealing cover 10, and the filling pipe 12, and enters the dispensing capsule 8. The telescopic connecting pipe 11 is made of metal corrugated pipe or rubber telescopic pipe, which has good flexibility and can adapt to the up and down movement of the dispensing capsule 8 during the adhesive application process. At the same time, the flow monitoring device on the telescopic connecting pipe 11 (such as an electromagnetic flow meter or a turbine flow meter) monitors the adhesive flow rate in real time to ensure stable adhesive supply.

[0057] Glue application stage: When the shoe sole fixing mold 4, containing the shoe sole, is conveyed to directly below the dispensing capsule 8, the cylinder 6 at the center of the top of the glue application frame 5 is activated. The cylinder 6 is a double-acting cylinder with a working pressure between 0.4-0.8 MPa. Its pneumatic telescopic rod 9 extends downwards, pushing the dispensing capsule 8 downwards, bringing the glue dispensing tube 14 at the bottom of the dispensing capsule 8 close to the shoe sole surface. As the dispensing capsule 8 moves downwards, the bottom end of the glue dispensing tube 14 contacts the shoe sole and is pushed upwards by the sole, causing the glue dispensing tube 14 to move upwards, compressing the return spring 15 located at the bottom of the glue outlet 13. At this time, the glue inlet hole 16 inside the glue outlet 13 on the outer wall of the glue dispensing tube 14 is exposed, and the glue inside the dispensing capsule 8 enters the glue dispensing tube 14 through the glue inlet hole 16. Under the pressure inside the dispensing capsule 8, the glue flows out through the bottom end of the glue dispensing tube 14 and coats the shoe sole surface. The glue outlets 13 are evenly spaced from left to right, and a flow control valve can be installed inside the glue outlet tube 14. By adjusting the valve opening, the glue amount can be precisely controlled to ensure that the glue is applied evenly to all parts of the shoe sole.

[0058] Reset Phase: After the sole is coated with adhesive, cylinder 6 drives the pneumatic telescopic rod 9 to retract upwards, causing the dispensing capsule 8 to move upwards as a whole. The dispensing tube 14, no longer subjected to the thrust of the sole, moves downwards under the elastic force of the reset spring 15, resetting itself. The glue inlet hole 16 is then resealed by the inner wall of the glue outlet 13, stopping the glue dispensing. The sealing ring plates 17 located at both ends of the glue outlet 13 tightly fit the glue outlet 13 and the dispensing tube 14, preventing glue leakage from gaps. Simultaneously, the sole conveyor belt 2 continues to operate, transporting the coated sole to the next process. New soles awaiting coating enter the coating area along with the sole fixing mold 4, beginning the next round of coating.

[0059] III. Key Component Collaboration Principle

[0060] Glue Dispensing Control Principle: The up-and-down movement of the glue dispensing tube 14 is jointly controlled by the contact with the sole and the elasticity of the return spring 15, achieving precise coordination between the glue dispensing action and the sole position. The positional accuracy of the glue inlet hole 16 is ensured to be within ±0.1 mm through CNC machining, ensuring consistent glue dispensing volume for each glue dispensing tube 14, thereby guaranteeing uniform glue application. Multiple sealing structures, including the sealing ring plate 17, sealing ring a21, and sealing ring b23, work together to effectively prevent glue leakage, improve glue utilization, and reduce equipment contamination. Power Transmission Principle: The asynchronous motor 3 provides conveying power to the sole conveyor belt 2, achieving automatic conveying of the sole through the continuous movement of the conveyor belt; the cylinder 6 serves as the power source for the up-and-down movement of the dispensing capsule 8, transmitting power to the dispensing capsule 8 through the pneumatic telescopic rod 9, achieving precise control of the glue application position. The two power sources work together, and through the coordinated control system, ensure the orderly progress of the entire glue application process.

[0061] Adhesive supply guarantee principle: The adhesive storage box 7 serves as the adhesive storage device, continuously supplying adhesive to the dispensing capsule 8 via the telescopic connecting pipe 11. The liquid level detection device and flow monitoring device monitor the adhesive status in real time, ensuring a sufficient and stable supply. The heating and stirring devices ensure that the adhesive maintains good fluidity and uniformity during storage and transportation, providing a foundation for high-quality adhesive application.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic shoe sole gluing machine, comprising a gluing machine base (1), characterized in that, The base (1) of the glue applicator is equipped with a shoe sole conveyor belt (2), and the center of the upper end of the base (1) of the glue applicator is equipped with a glue applicator frame (5). The bottom end of the glue-applying frame (5) is equipped with an outlet capsule (8), and the upper end of the shoe sole conveyor belt (2) is uniformly and equidistantly equipped with shoe sole fixing molds (4). The bottom end of the capsule (8) is provided with glue outlets (13) evenly spaced from left to right, and the glue outlets (13) are equipped with glue tubes (14). The outer wall of the dispensing tube (14) is provided with a glue inlet hole (16) inside the glue outlet (13), and a return spring (15) is fitted on the bottom end of the dispensing tube (14) at the glue outlet (13). The outer ends of the dispensing tube (14) located at both the inner and outer ends of the dispensing port (13) are fitted with sealing ring plates (17).

2. The automatic shoe sole gluing machine according to claim 1, characterized in that, The top of the capsule (8) is equipped with a glue-filling tube (12), the top of the glue-applying frame (5) is equipped with a glue storage box (7), the output end of the glue storage box (7) is equipped with a telescopic connecting tube (11), and a sealing cap (10) is installed between the telescopic connecting tube (11) and the glue-filling tube (12).

3. The automatic shoe sole gluing machine according to claim 2, characterized in that, The inner wall of the sealing cap (10) is provided with an internal thread (19), and the outer wall of the glue-filling tube (12) is provided with an external thread (18). The internal thread (19) and the external thread (18) are matched together, and the end of the telescopic tube (11) located inside the sealing cap (10) is fitted with a limiting ring plate (20).

4. An automatic shoe sole gluing machine according to claim 3, characterized in that, The telescopic connecting pipe (11) is fitted with a sealing ring a (21) and a sealing ring b (23) at one end of the outer side of the pipe located inside the sealing cover (10).

5. An automatic shoe sole gluing machine according to claim 4, characterized in that, Rubber blocks (22) are installed at the edge between the sealing ring a (21) and the sealing ring b (23) and at equal intervals along their axis.

6. An automatic shoe sole gluing machine according to claim 1, characterized in that, A cylinder (6) is installed at the center of the top of the glue applicator (5). A pneumatic telescopic rod (9) is mounted on the driving end of the cylinder (6). The top of the capsule (8) is connected to the end of the pneumatic telescopic rod (9).

7. An automatic shoe sole gluing machine according to claim 1, characterized in that, The side wall of the glue applicator (5) is equipped with an asynchronous motor (3), and the drive end of the shoe sole conveyor belt (2) is connected to the asynchronous motor (3).

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