Shoe glue dryer

Abstract

The application discloses a shoe glue drying machine and relates to the technical field of shoemaking equipment. The shoe glue drying machine comprises a device main body; the device main body comprises a drying box, an air duct and a host computer, a cross-flow fan and a condenser are arranged in the drying box, the condenser comprises fins, and a compressor and an evaporator are arranged in the host computer. The shoe glue drying machine is characterized in that the rotating roller is elastically supported by the lifting assembly to support the shoe sole, the pressing plate is locked by being pressed down from the shoe opening through the lifting mechanism, a plurality of shoe types are adaptively clamped, the shoe body is suspended and arranged, and the mesh belt bearing is abandoned; during conveying, the driving assembly drives the rotating frame and the shoe body to rotate, and the moving assembly drives the shoe body to reciprocatingly displace, so that the drying blind area caused by the mesh belt shielding and the shoe sole cavity is eliminated, and the rubber layer false drying is prevented from being scrapped; the self-cleaning scraping roller assembly moves synchronously with the conveying mechanism, residual rubber and water on the outer wall of the fins are scraped in time, the influence of the accumulated dirt on heat exchange is avoided, the downtime cleaning is reduced, the drying quality and the continuous operation efficiency of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of shoemaking equipment technology, specifically to a shoe glue dryer. Background Technology

[0002] In the shoe manufacturing bonding process, after water-based adhesive or polyurethane adhesive is applied to the bonding surfaces of the shoe upper and sole, the surfaces need to be sent to a drying chamber for constant-temperature drying to remove moisture and organic solvents from the adhesive layer. The uniformity of the adhesive layer drying directly determines the bonding strength of the shoe body. Existing shoe glue dryers rely on a compressor to drive the refrigerant in a closed-loop heat exchange between the condenser and evaporator. A cross-flow fan drives the airflow to pass over the high-temperature condenser to absorb heat and generate drying hot air. After the hot air comes into contact with the shoe body adhesive layer and exchanges heat, it becomes humid and hot exhaust gas carrying water vapor and glue mist. When the humid and hot exhaust gas flows through the outside of the evaporator, the low-temperature refrigerant inside the evaporator pipes absorbs the heat of the exhaust gas, causing the exhaust gas to cool down and condense to release moisture, thus realizing the recovery and reuse of waste heat. Currently, the mainstream drying equipment in the industry generally uses a metal mesh belt to flatly transport the shoe body, with the shoe body and sole attached to the mesh belt and moving synchronously with it.

[0003] However, when the conveyor belt is laid flat during transport, the area where the shoe sole meets the belt is blocked by the belt. This part of the adhesive surface is isolated from hot air and cannot be dried by heat. In addition, the air circulation in the adhesive cavity of the shoe sole and the inner space of the shoe upper is not good, and hot air stagnation blind spots are formed in many areas. The surface of the exposed adhesive layer is preferentially heated and dries and forms a skin, blocking the evaporation path of internal moisture and organic solvents. This causes the defect of false dryness, where the adhesive is dry on the outside but wet on the inside. After the finished product is assembled, it is easy to cause adhesive cracking and batch scrapping. The residual adhesive that melts and drips from the heat continues to accumulate and block the mesh of the conveyor belt. As the ventilation cross-sectional area gradually decreases, the only option is to shut down the machine, disassemble the conveyor belt, and manually clean the glue, which significantly reduces the effective production time of the equipment. At the same time, the hot and humid exhaust gas after drying carries glue mist, and glue residues accumulate and form scale in the gaps of the condenser fins along with condensate, causing the heat transfer coefficient of the condenser to continue to decline and the energy consumption of the unit to increase year by year. The existing equipment lacks a clamping mechanism that can hold the shoe body and drive it to flip and change position, as well as a linkage fin self-cleaning structure. The drying quality, continuous production efficiency, and energy-saving performance of the equipment are difficult to meet the production requirements of large-scale shoe manufacturing. Summary of the Invention

[0004] The purpose of this invention is to provide a shoe glue dryer that can clamp the shoe body to achieve self-rotation and reciprocating floating, and has a matching linkage fin for automatic descaling, so as to solve the problems mentioned in the background art, such as the glue being falsely dried and scrapped due to the blind spots created by the mesh belt and the concave cavity of the shoe sole, as well as the problem of residual glue clogging the mesh and the need to stop the machine for cleaning due to the accumulation of dirt on the fins.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shoe glue dryer, comprising a main body; the main body includes a drying chamber, an air duct, and a main unit; the drying chamber is equipped with a cross-flow fan and a condenser, the condenser including fins; the main unit is equipped with a compressor and an evaporator; the main body further includes two sets of conveying mechanisms disposed within the drying chamber and above the condenser, and a plurality of clamping mechanisms connected between the two sets of conveying mechanisms for clamping shoes; the drying chamber is also equipped with a self-cleaning scraper roller assembly linked to the conveying mechanisms for scraping off residual glue and condensed water adhering to the surface of the fins; Each of the clamping mechanisms includes two mounting brackets, a rotating frame rotating between the two mounting brackets, and a drive assembly for rotating the rotating frame; the clamping mechanism also includes a plurality of rotating rollers connected to the bottom of the rotating frame and a lifting assembly connected between the rotating rollers and the rotating frame; the clamping mechanism also includes a moving block and a moving assembly connected between the moving block and the rotating frame; the clamping mechanism also includes a pressure plate and a lifting mechanism connected between the pressure plate and the moving block.

[0006] Preferably, the drive assembly includes a rotating shaft connected between the mounting bracket and the rotating frame, a gear connected to the rotating shaft, and a rack meshing with the gear; the rack is connected to the inner wall of the drying oven.

[0007] Preferably, the moving component includes a first spring telescopic rod connected between the moving block and the rotating frame; the moving component also includes a first conical rod connected to the moving block, a rotating disk rotatably connected to the rotating shaft, and a plurality of protrusions connected to the rotating disk and evenly distributed in a ring along the rotating disk; the protrusions include inclined surfaces, allowing the first conical rod to slide on the inclined surfaces.

[0008] Preferably, the lifting mechanism includes a second spring telescopic rod connected between the pressure plate and the moving block, an iron block connected to the pressure plate, and an electromagnet connected to the moving block.

[0009] Preferably, the lifting assembly includes a bracket connected to the rotating roller, a connecting block connected to the bracket, and a third spring telescopic rod connected between the connecting block and the rotating frame; the lifting assembly also includes a scraper connected to the bracket, the scraper being slidably engaged along the side wall of the rotating roller.

[0010] Preferably, the main body of the device further includes a clamping mechanism for clamping the toe of the shoe; the clamping mechanism includes a hollowed-out arc-shaped plate and a fourth spring telescopic rod connected between the arc-shaped plate and the rotating frame.

[0011] Preferably, the self-cleaning scraper assembly includes a scraper ring sleeved on the side wall of the fin, a mounting plate connected to the scraper ring, and a moving mechanism connected between the mounting plate and the condenser.

[0012] Preferably, the moving mechanism includes two fixed blocks connected to the condenser, two guide rods connected between the fixed blocks, and a return spring sleeved on the side wall of the guide rod; the mounting plate is sleeved on the side wall of the guide rod; the moving mechanism further includes a pushing component for pushing the mounting plate to slide along the guide rod.

[0013] Preferably, the pushing assembly includes a fifth spring telescopic rod fixedly connected to the bottom of one of the rotating frames and a second conical rod connected to the fifth spring telescopic rod, allowing the mounting plate to slide along the side wall of the second conical rod.

[0014] Preferably, each set of conveying mechanisms includes two support plates connected to the outer wall of the drying chamber, a toothed pulley rotatably connected to the support plates, and a toothed belt sleeved on the side wall of the toothed pulley; the conveying mechanism also includes multiple support rollers rotatably connected to the inner wall of the drying chamber; the conveying mechanism also includes a drive module for driving the toothed pulley to rotate; the mounting frame is fixedly connected to the side wall of the two toothed belts.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This type of shoe glue dryer, through the setting of clamping mechanisms, etc., during the drying process, the mounting frame assembles the rotating frame onto the conveying mechanism. The rotating roller is elastically supported by the lifting component to support the shoe sole. The pressure plate is pressed and locked from the shoe opening by the lifting mechanism, which can adaptively clamp multiple shoe types, so that the shoe body is suspended in the air and the mesh belt is eliminated. During the conveying process, the drive component drives the rotating frame and the shoe body to rotate, and the moving component drives the shoe body to move back to the original position, eliminating the drying blind spots caused by the mesh belt and the concave cavity of the shoe sole, and preventing the glue layer from being falsely dried and unusable. The self-cleaning scraper roller component moves synchronously with the conveying mechanism to scrape off residual glue and accumulated water on the outer wall of the fins in time, avoiding the accumulation of dirt affecting heat exchange, reducing downtime for cleaning, and improving drying quality and continuous operation efficiency of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention; Figure 3 This is a schematic diagram of the air duct structure in this invention; Figure 4 This is a schematic diagram of the internal structure of the drying oven and the main unit in this invention; Figure 5 This is a schematic diagram of the condenser in this invention; Figure 6 This is a schematic diagram of the clamping mechanism in this invention; Figure 7 This is a schematic diagram of the clamping mechanism from another perspective in this invention; Figure 8This is a schematic diagram showing the position of the clamping mechanism in this invention; Figure 9 This is a schematic diagram of the cleaning mechanism in this invention; Figure 10 This is a schematic diagram of the moving component, lifting component, and lifting mechanism in this invention.

[0017] In the diagram: 101. Drying oven; 102. Air duct; 103. Main unit; 104. Fan air vent; 105. Cross-flow fan; 106. Condenser; 107. Fins; 108. Feed inlet; 109. Discharge outlet; 110. Compressor; 111. Evaporator; 201. Shaft; 202. Gear; 203. Rack; 301. Third spring telescopic rod; 302. Support; 303. Connecting block; 401. First spring telescopic rod; 402. First conical rod; 403. Rotating disk; 404. Protrusion; 405. Inclined surface; 501. Second spring telescopic rod; 502, iron block; 503, electromagnet; 601, scraper ring; 602, mounting plate; 701, fixing block; 702, guide rod; 703, return spring; 801, fifth spring telescopic rod; 802, second tapered rod; 901, fourth spring telescopic rod; 902, arc plate; 1001, support plate; 1002, toothed pulley; 1003, support roller; 1004, toothed belt; 1201, mounting frame; 1202, rotating frame; 1203, pressure plate; 1204, rotating roller; 1205, moving block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-10This invention provides a shoe glue dryer, comprising a main body; the main body includes a drying chamber 101, an air duct 102, and a main unit 103. The drying chamber 101 is equipped with a cross-flow fan 105 and a condenser 106, and the side wall of the drying chamber 101 is provided with a fan air vent 104. The condenser 106 includes fins 107. The main unit 103 is equipped with a compressor 110 and an evaporator 111. This equipment is equipped with a DC inverter heat pump temperature control system, with a default drying temperature setting of 75℃, and can be adjusted according to the type of leather, PU, ​​canvas, etc. For shoe materials such as fabric, the temperature is adjusted within the range of 60-90℃, and the compressor operates at a frequency of 15-90Hz. Real-time temperature feedback is provided by dual temperature sensors (one main and one backup) in the drying oven 101. When the oven temperature is 5℃ below the set value upon startup, it enters preheating mode. The compressor accelerates rapidly from 15Hz to 5Hz / 30s, quickly raising the temperature. If preheating exceeds the set time and fails to meet the target, the frequency is reduced and an alarm sounds. Once the oven temperature reaches 3-5℃ below the set value, the frequency smoothly increases, and near the set temperature, it enters a constant temperature range (set value -3℃ to +2℃). The system adjusts according to the ambient temperature. The loading and moisture content of the shoe material are dynamically controlled by frequency conversion between 30 and 45 Hz. When the temperature is low and the humidity is high, the frequency is appropriately increased under full load to ensure drying and dehumidification. When the temperature is high and the material is low, the frequency is reduced to save energy and prevent the shoe material from deforming and aging due to heat. During normal shutdown, the frequency is slowly reduced to 15 Hz before stopping. When the temperature inside the chamber reaches the limit of 80℃, the machine will immediately stop and alarm. At the same time, the equipment is equipped with multiple fault protection functions such as ambient temperature compensation, material load compensation, and frequency reduction shutdown protection for sensor failure, compressor overload, and air duct blockage. The frequency adjustment follows the principle of gradual increase and decrease throughout the process. The temperature fluctuation is controlled within ±2℃. While ensuring the drying and shaping effect, it saves energy, protects materials, and protects the heat pump unit. The structure and principle are well known in this technical field and will not be described in detail here. The main body of the device also includes two sets of conveying mechanisms set inside the drying chamber 101 and above the condenser 106, and multiple clamping mechanisms connected between the two sets of conveying mechanisms for clamping the shoes. The drying chamber 101 is also equipped with a self-cleaning scraper roller assembly that is linked to the conveying mechanism and used to scrape off residual glue and condensed water on the surface of the fins 107. Each clamping mechanism includes two mounting brackets 1201, a rotating frame 1202 rotating between the two mounting brackets 1201, and a drive assembly for rotating the rotating frame 1202. The bottom of the rotating frame 1202 has a through slot. The clamping mechanism also includes multiple rotating rollers 1204 connected to the bottom of the rotating frame 1202 and a lifting assembly connecting the rotating rollers 1204 and the rotating frame 1202. The clamping mechanism also includes a moving block 1205 and a moving assembly connecting the moving block 1205 and the rotating frame 1202. The clamping mechanism also includes a pressure plate 1203 and a lifting mechanism connecting the pressure plate 1203 and the moving block 1205. Mounting brackets 1201... 201 The rotating frame 1202 is assembled on the conveying mechanism. The rotating roller 1204 is elastically supported by the lifting component to support the shoe sole. The pressure plate 1203 is pressed and locked from the shoe opening by the lifting mechanism, which can adaptively clamp multiple shoe types, so that the shoe body is suspended in the air and the mesh belt is eliminated. During the conveying process, the drive component drives the rotating frame 1202 and the shoe body to rotate. The moving component drives the shoe body to move back and forth, eliminating the drying blind spots caused by the mesh belt and the concave cavity of the shoe sole, and preventing the glue layer from being falsely dried and scrapped. The self-cleaning scraper roller assembly moves synchronously with the conveying mechanism to scrape off the residual glue and water on the outer wall of the fin 107 in time, so as to avoid the accumulation of dirt affecting heat exchange, reduce downtime for cleaning, and improve drying quality and continuous operation efficiency of the equipment.

[0020] The drive assembly includes a rotating shaft 201 connected between the mounting frame 1201 and the rotating frame 1202, a gear 202 connected to the rotating shaft 201, and a rack 203 meshing with the gear 202. The rack 203 is connected to the inner wall of the drying chamber 101 and is fixed to the inner wall of the drying chamber 101 to remain stationary. During the translation of the clamping mechanism with the conveying mechanism, the gear 202 meshes and rolls along the fixed rack 203, which drives the rotating frame 1202 and the shoe body to rotate passively via the rotating shaft 201. The fixed rack 203 does not require an additional rotary drive motor; the shoe body can be rotated by relying on the conveying propulsion. The self-rotation is a necessary design for simplifying the power structure and controlling equipment costs. The self-rotation can continuously change the heating position of the shoe body, and the hot air can fully enter the concave cavity of the sole, eliminating the drying blind spot formed by the sealed concave cavity. When the clamping mechanism flips to the lower side with the toothed belt 1004, the gear 202 flips to the lower side at the same time and disengages from the rack 203 above. When it is on the lower side, there is no need for the clamping mechanism to rotate. When the clamping mechanism flips to the upper side again with the toothed belt 1004, the gear 202 flips to the upper side at the same time and meshes with the rack 203 above, ensuring that when it is on the upper side, it can drive the clamping mechanism to rotate.

[0021] The moving assembly includes a first spring telescopic rod 401 connected between the moving block 1205 and the rotating frame 1202; the moving assembly also includes a first tapered rod 402 connected to the moving block 1205, a rotating disk 403 rotatably connected to the rotating shaft 201, and a plurality of protrusions 404 connected to the rotating disk 403 and evenly distributed in a ring along the rotating disk 403. The rotating disk 403 is sleeved on the side wall of the rotating shaft 201 and rotatably connected to the side wall of the rotating shaft 201. The rotating disk 403 is fixed to the mounting frame 1201 by a U-shaped frame (not shown in the figure). When the rotating frame 1202 rotates, the rotating disk 403 will not rotate, and at the same time, it is ensured that the rotating frame 1202 will not interfere with the U-shaped frame when rotating. The protrusions 404 include inclined surfaces 405, so that the first tapered rod 402 can slide on the inclined surfaces 405. When the rotating shaft 201 rotates, it can drive the rotating frame 1202 and the shoe body to rotate synchronously. When the rotating frame 1202 rotates... The moving block 1205 and the first conical rod 402 rotate synchronously, while the rotating disk 403 does not rotate. The inclined surface 405 of the protrusion 404 intermittently pushes the first conical rod 402, causing the moving block 1205 to slide against the elastic force of the first spring telescopic rod 401. When the conical rod slides away from the inclined surface 405, the first spring telescopic rod 401 pulls the moving block 1205 back to its original position. This cycle repeats to achieve the periodic reciprocating motion of the moving block 1205, which in turn drives the pressure plate 1203 and the shoe body to move back and forth slightly via the lifting mechanism. This structure reuses the self-rotation power of the rotating shaft 201, eliminating the need for a separate reciprocating drive source. It is a necessary structure to achieve synchronous self-rotation and reciprocating movement. The reciprocating movement of the shoe body continuously changes the contact point of the sole, further eliminating residual drying dead corners. At the same time, under the action of the rotating roller 1204, it is convenient for the shoe body ribs to move back and forth. Furthermore, the friction between the sole and the rotating roller 1204 removes residual glue, reducing the problem of residual glue accumulation and clogging of holes.

[0022] The lifting mechanism includes a second spring telescopic rod 501 connected between the pressure plate 1203 and the moving block 1205, an iron block 502 connected to the pressure plate 1203, and an electromagnet 503 connected to the moving block 1205. The electromagnet 503 is equipped with a micro lithium battery built into the inner cavity of the moving block 1205. The moving block 1205 is equipped with a double-layered heat-insulating chamber, which is filled with high-temperature resistant heat-insulating cotton to isolate the lithium battery cells from the drying hot air environment, avoiding damage to the battery cells caused by high temperature and adhesive erosion inside the chamber. Limit switches are installed on the outside of the feeding and discharging stations of the drying chamber 101, and the switch leads are connected to the control cabinet of the chamber. The pressing contacts of the switches extend into the interior of the chamber. The clamping mechanism is in the drying travel range and does not touch When the contact switch and the electronic control switch remain open, the lithium battery power supply circuit is cut off. The second spring telescopic rod 501 pushes the pressure plate 1203 downward, cooperating with the lower rotating roller 1204 to adaptively clamp different sizes of shoe bodies using spring force. When the mechanism reaches the feeding or discharging station, the moving block 1205 presses against the corresponding station's travel electronic control switch, closing the switch to conduct the circuit between the lithium battery and the electromagnet 503. The lithium battery supplies power to the electromagnet 503, which attracts the iron block 502 and overcomes the spring tension to lift the pressure plate 1203, completing the feeding, discharging, and unloading processes sequentially. After the mechanism leaves the station, the contact springs back, the electronic control switch immediately disconnects, and the pressure plate 1203 automatically resets and clamps. The equipment is equipped with a wireless charging base at the idle maintenance station, automatically wirelessly charging the lithium battery after the unloaded clamping mechanism stops. Relying on an external limit switch to directly control the circuit on / off, the switch is located outside the oven to avoid high temperature and corrosive environment, making it less prone to aging and failure. Combined with the heat insulation chamber structure, it ensures the long-term stable operation of the lithium battery. It eliminates the need for easily damaged parts such as built-in contacts and reed switches, making it an essential design for realizing automated continuous clamping and unloading of shoes of various specifications.

[0023] The lifting assembly includes a bracket 302 connected to the rotating roller 1204, a connecting block 303 connected to the bracket 302, and a third spring telescopic rod 301 connected between the connecting block 303 and the rotating frame 1202. The lifting assembly also includes a scraper connected to the bracket 302, which can slide along the side wall of the rotating roller 1204. The third spring telescopic rod 301 provides upward elastic support to the rotating roller 1204 through the connecting block 303 and the bracket 302, and works with the upper pressure plate 1203 to achieve elastic clamping from top to bottom. When encountering an uneven sole, the third spring telescopic rod 301 adaptively compresses and finely adjusts with the contour of the sole, so that the rotating roller 1204 is in close contact with the bottom surface of the sole throughout the process, avoiding the problem of partial suspension and insecure clamping. The scraper slides and adheres closely to the outer wall of the rotating roller 1204. As the rotating roller 1204 rotates with the shoe body, the scraper continuously scrapes off the glue residue and rubber debris adhering to the roller surface, avoiding the accumulation of residual glue that causes the clamping height to shift and the clamping to become unstable. The floating structure of the third spring telescopic rod 301 can adapt to the irregular shape of the shoe sole, ensure full-width fit and clamping, and ensure that the scraper always presses against the roller surface, compensate for roller wear and residual material thickness, eliminating the need for frequent manual shutdowns to clean the roller surface. It is a necessary design to maintain clamping accuracy, adapt to irregular shoe soles, and reduce the frequency of equipment maintenance.

[0024] The main body of the device also includes a clamping mechanism for securing the toe of the shoe. The clamping mechanism includes a perforated arc-shaped plate 902 and a fourth spring telescopic rod 901 connected between the arc-shaped plate 902 and the rotating frame 1202. The fourth spring telescopic rod 901 continuously pushes the perforated arc-shaped plate 902 forward to conform to the arc surface of the toe. The spring compression adapts to the differences in toe length and curvature of different shoe types, limiting the shoe's forward and backward movement from the front. The perforated structure of the arc-shaped plate 902 avoids protruding decorations and shoe labels on the toe, while facilitating the penetration of hot air to the inside of the toe, improving the drying efficiency of the toe area. This elastic clamping structure, in conjunction with the upper and lower clamping structures, achieves omnidirectional limiting, preventing slippage or deflection of the shoe during the self-rotating drying process, ensuring uniform heating of the entire shoe. This is a necessary design for adapting to various shoe styles and optimizing the drying effect. Furthermore, the fourth spring telescopic rod 901 can extend and retract as the shoe moves back and forth.

[0025] The self-cleaning scraper assembly includes a scraper ring 601 sleeved on the side wall of the fin 107, a mounting plate 602 connected to the scraper ring 601, and a moving mechanism connected between the mounting plate 602 and the condenser 106. The moving mechanism can drive the mounting plate 602 and the scraper ring 601 to slide back and forth along the axial direction of the fin 107. The inner ring of the scraper ring 601 is in close contact with the outer wall of the fin 107. During the reciprocating movement, it continuously scrapes away the condensate scale and glue-like contaminants accumulated on the surface of the fin 107, preventing the gaps in the fin 107 from becoming clogged and causing a decrease in the heat exchange efficiency of the condenser 106. The moving mechanism can achieve normalized self-cleaning by relying on the equipment's own periodic start and stop to drive the moving mechanism, without the need for manual disassembly and cleaning, ensuring long-term stable heat dissipation of the condenser 106. This is a necessary design to maintain the drying temperature control accuracy and extend the equipment operation and maintenance cycle.

[0026] The moving mechanism includes two fixed blocks 701 connected to the condenser 106, two guide rods 702 connected between the fixed blocks 701, and a return spring 703 sleeved on the side wall of the guide rod 702; the mounting plate 602 is sleeved on the side wall of the guide rod 702; the moving mechanism also includes a pushing component for pushing the mounting plate 602 to slide along the guide rod 702. The guide rod 702 plays a limiting and guiding role for the mounting plate 602, ensuring that the mounting plate 602 and the scraper ring 601 slide smoothly and linearly along the axial direction of the fin 107, and avoiding the scraper ring 601 from deviating and scraping the fin 107, causing deformation; the pushing component outputs thrust to overcome the elasticity of the return spring 703 and drive the mounting plate 602 forward to scrape off dirt. After the thrust is removed, the return spring 703 rebounds and pulls the mounting plate 602 and the scraper ring 601 to automatically return to their original position. The reciprocating scraping action is achieved by relying on the return spring 703 to reset. Eliminating the need for a return power source, the system can complete round-trip self-cleaning using only a single drive force. Its simplified structure and stable operation make it an essential design for achieving periodic automatic descaling of the finned 107 at low cost.

[0027] The pushing component includes a fifth spring telescopic rod 801 fixedly connected to the bottom of one of the rotating frames 1202 and a second conical rod 802 connected to the fifth spring telescopic rod 801, allowing the mounting plate 602 to slide along the side wall of the second conical rod 802. After the shoe body is dried, it is sent out through the discharge port 109. When the electromagnet 503 is energized, it attracts the iron block 502, pulling the pressure plate 1203 upward. The second spring telescopic rod 501 is compressed and retracts, thus removing the finished shoe from the clamping mechanism. Subsequently, the clamping mechanism continues to descend with the toothed belt 1004, maintaining a vertical posture under its own weight and the limiting action of the rotating shaft 201. During the movement, the second conical rod 802 abuts against the side wall of the mounting plate 602, pushing the mounting plate 602 to slide along the guide rod 702. The return spring 703 is compressed, simultaneously driving the scraper ring 601 to slide and scrape dirt along the outer wall of the fin 107. After the return spring 703 is compressed to its limit, the clamping mechanism continues to move forward, forcing the second conical rod 802 to rise and compress the fifth spring telescopic rod 801, causing the second conical rod 802 to flip over the mounting plate 602, ensuring the smooth movement of the clamping mechanism. After the second conical rod 802 is released from its limit, the mounting plate 602 is reset under the elastic drive of the return spring 703, and drives the scraper ring 601 to move back, reciprocating and sliding to automatically scrape away condensate and adhesive residue from the outer wall of the fin 107, maintaining the heat exchange performance of the condenser 106 and ensuring the overall drying efficiency of the machine.

[0028] Each conveying mechanism includes two support plates 1001 connected to the outer wall of the drying chamber 101, a toothed pulley 1002 rotatably connected to the support plates 1001, and a toothed belt 1004 sleeved on the side wall of the toothed pulley 1002; the conveying mechanism also includes multiple support rollers 1003 rotatably connected to the inner wall of the drying chamber 101; the conveying mechanism also includes a drive module for driving the toothed pulley 1002 to rotate; the mounting bracket 1201 is fixedly connected to the side of the two toothed belts 1004. The drive module rotates the toothed pulley 1002, and precise synchronous transmission is achieved through the meshing of the teeth of the toothed belt 1004. The mounting frame 1201 moves in a closed loop with the toothed belt 1004, driving the entire clamping mechanism to circulate within the drying chamber 101. The support roller 1003 inside the chamber supports the belt and mounting frame 1201 from the inside of the toothed belt 1004, counteracting the belt sagging caused by the weight of the shoe body, ensuring that the toothed belt 1004 is taut throughout the process and that the transmission is smooth without skipping teeth or slipping. The toothed meshing transmission ensures a constant conveying step distance, providing a precise stroke reference for the clamping mechanism's fixed-point pressure self-cleaning component and the station start / stop electromagnet 503. This is the basic transmission design for achieving fully automated continuous feeding and fixed-point scraping and unloading.

[0029] Working principle: In use, at the feeding station, the electromagnet 503 is energized and attracts the iron block 502, thereby overcoming the elastic force of the second spring telescopic rod 501 and lifting the pressure plate 1203 upward; the operator then places the shoe body to be dried on the rotating roller 1204, so that the toe rests against the hollow arc plate 902, and the fourth spring telescopic rod 901 pushes the arc plate 902 forward to complete the axial positioning of the toe, and makes the heel close to the side wall of the rotating frame 1202, and the pressure plate 1203 is aligned with the shoe opening; After the shoe body is positioned, the feeding point circuit is disconnected, the electromagnet 503 loses its magnetism and releases the iron block 502. Then, the second spring telescopic rod 501 rebounds and drives the pressure plate 1203 to move down through the shoe opening and into the shoe to press the bottom of the shoe upper. At the same time, the third spring telescopic rod 301 below lifts the bracket 302 and the rotating roller 1204 upward. Once it encounters an uneven sole, the third spring telescopic rod 301 can adaptively extend and retract to compensate, ensuring that the rotating roller 1204 is always in close contact with the bottom surface of the sole. Finally, the shoe body is suspended and clamped and fixed by the pressure plate 1203 and the rotating roller 1204, without the need for mesh belt support throughout the process.

[0030] Next, the drive module starts and drives the toothed pulley 1002 and toothed belt 1004 to operate in a closed loop. The mounting frame 1201 rotates synchronously with the belt, thereby driving the entire clamping mechanism to clamp the shoe body and feed it into the drying chamber 101 through the feed inlet 108. The support rollers 1003 arranged inside the chamber support the toothed belt 1004 from the inside of the belt to prevent the belt from sagging, slipping, or skipping teeth under load. During this period, the equipment simultaneously starts the entire heat pump circulation system, and the compressor 110 compresses and generates high-temperature heat pumps. High-temperature, high-pressure refrigerant is sent to condenser 106 to release heat. Cross-flow fan 105 draws in ambient air, which flows through condenser 106 and absorbs heat to form high-temperature drying hot air. The hot air circulates in the inner cavity of drying chamber 101, carrying away moisture from the shoe's adhesive layer, and then transforms into humid hot return air. The humid hot air then flows into evaporator 111, where it absorbs heat at low temperature and condenses water vapor to complete dehumidification, and is discharged through air duct 102. The vaporized refrigerant then flows back to compressor 110, thus forming a closed-loop heat pump continuous heating and dehumidification cycle.

[0031] As the clamping mechanism revolves with the toothed belt 1004, on the one hand, the gear 202 continuously meshes with the rack 203 fixed inside the drying chamber 101, and the power is transmitted to the rotating frame 1202 via the rotating shaft 201, causing the clamped shoe to rotate circumferentially, so that all parts of the shoe are evenly exposed to hot air, completely eliminating the drying blind spots caused by the traditional mesh belt; on the other hand, when the rotating frame 1202 rotates, it drives the moving block 1205 and the first conical rod 402 to rotate synchronously, while the rotating disk 403 does not rotate. The inclined surface 405 of the protrusion 404 intermittently pushes the first conical rod 402, forcing the moving block 1205 to rotate. 05 Overcomes the lateral slippage of the first spring telescopic rod 401. After the protrusion 404 disengages from the first conical rod 402, the first spring telescopic rod 401 rebounds and pulls the moving block 1205 back to its original position. This cycle repeats to achieve the reciprocating sliding of the moving block 1205, and in conjunction with the pressure plate 1203, drives the shoe body to move back and forth slightly on the surface of the rotating roller 1204, driving the rotating roller 1204 to rotate intermittently. The shoe body and the rotating roller 1204 rub against each other to remove the attached residual glue, and then the scraper fixed to the bracket 302 closely adheres to the roller wall to continuously scrape off the waste. In addition, the dynamic displacement of the shoe body can break the dead corners of local hot air retention, further improving the uniformity of drying the whole shoe.

[0032] Once the shoe body is dried and conveyed to the discharge port 109, the electromagnet 503 at the discharge station is energized to attract the iron block 502, lifting the pressure plate 1203 to remove the finished shoe. After unloading, the unloaded clamping mechanism continues to circulate with the toothed belt 1004. Under its own weight and the action of the rotating shaft 201, the rotating frame 1202 and the second conical rod 802 always maintain a vertical downward posture. When it reaches the corresponding station of the condenser 106, the conical surface of the second conical rod 802 presses against the side wall of the mounting plate 602, pushing the mounting plate 602 to slide along the guide rod 702 and compressing the return spring 703, simultaneously driving the scraper ring 601 along... The outer wall of fin 107 moves forward to scrape away condensation and adhesive residue; after the return spring 703 is compressed to its limit, the clamping mechanism continues to move forward, forcing the second conical rod 802 to rise and compress the fifth spring telescopic rod 801, causing the second conical rod 802 to flip over the mounting plate 602, ensuring smooth passage of the clamping mechanism; after the second conical rod 802 is completely disengaged from the limit of the mounting plate 602, the return spring 703 uses its own elasticity to pull the mounting plate 602 and the scraper ring 601 back to reset. A single conveying revolution can complete one round of reciprocating self-cleaning operation of fin 107, maintaining the heat exchange performance of condenser 106 for a long time and ensuring stable drying efficiency of the whole machine.

Claims

1. A shoe glue dryer, comprising a main body; the main body includes a drying chamber (101), an air duct (102), and a main unit (103), wherein the drying chamber (101) is provided with a cross-flow fan (105) and a condenser (106), the condenser (106) including fins (107), and the main unit (103) is provided with a compressor (110) and an evaporator (111), characterized in that: The main body of the device also includes two sets of conveying mechanisms disposed inside the drying box (101) and above the condenser (106) and multiple clamping mechanisms connected between the two sets of conveying mechanisms for clamping the shoes; the drying box (101) is also provided with a self-cleaning scraper assembly that is linked to the conveying mechanism and used to scrape off residual glue and condensed water on the surface of the fins (107). Each of the clamping mechanisms includes two mounting brackets (1201), a rotating frame (1202) rotating between the two mounting brackets (1201), and a drive assembly for driving the rotating frame (1202) to rotate; the clamping mechanism also includes a plurality of rotating rollers (1204) connected to the bottom of the rotating frame (1202) and a lifting assembly connected between the rotating rollers (1204) and the rotating frame (1202); the clamping mechanism also includes a moving block (1205) and a moving assembly connected between the moving block (1205) and the rotating frame (1202); the clamping mechanism also includes a pressure plate (1203) and a lifting mechanism connected between the pressure plate (1203) and the moving block (1205); The drive assembly includes a rotating shaft (201) connected between the mounting bracket (1201) and the rotating frame (1202), a gear (202) connected to the rotating shaft (201), and a rack (203) meshing with the gear (202); the rack (203) is connected to the inner wall of the drying chamber (101); The moving assembly includes a first spring telescopic rod (401) connected between the moving block (1205) and the rotating frame (1202); the moving assembly also includes a first tapered rod (402) connected to the moving block (1205), a rotating disk (403) rotatably connected to the rotating shaft (201), and a plurality of protrusions (404) connected to the rotating disk (403) and evenly distributed in a ring along the rotating disk (403); the protrusions (404) include inclined surfaces (405) so that the first tapered rod (402) can slide on the inclined surfaces (405).

2. The shoe glue dryer according to claim 1, characterized in that: The lifting mechanism includes a second spring telescopic rod (501) connected between the pressure plate (1203) and the moving block (1205), an iron block (502) connected to the pressure plate (1203), and an electromagnet (503) connected to the moving block (1205).

3. The shoe glue dryer according to claim 1, characterized in that: The lifting assembly includes a bracket (302) connected to the rotating roller (1204), a connecting block (303) connected to the bracket (302), and a third spring telescopic rod (301) connected between the connecting block (303) and the rotating frame (1202); the lifting assembly also includes a scraper connected to the bracket (302), which can slide along the side wall of the rotating roller (1204).

4. A shoe glue dryer according to claim 1, characterized in that: The main body of the device also includes a clamping mechanism for clamping the toe of the shoe; the clamping mechanism includes a hollowed-out arc plate (902) and a fourth spring telescopic rod (901) connected between the arc plate (902) and the rotating frame (1202).

5. A shoe glue dryer according to claim 1, characterized in that: Each conveying mechanism includes two support plates (1001) connected to the outer wall of the drying chamber (101), a toothed pulley (1002) rotatably connected to the support plate (1001), and a toothed belt (1004) sleeved on the side wall of the toothed pulley (1002); the conveying mechanism also includes multiple support rollers (1003) rotatably connected to the inner wall of the drying chamber (101); the conveying mechanism also includes a drive module for driving the toothed pulley (1002) to rotate; the mounting bracket (1201) is fixedly connected to the side wall of the two toothed belts (1004).

6. A shoe glue dryer according to claim 5, characterized in that: The self-cleaning scraper assembly includes a scraper ring (601) sleeved on the side wall of the fin (107), a mounting plate (602) connected to the scraper ring (601), and a moving mechanism connected between the mounting plate (602) and the condenser (106).

7. A shoe glue dryer according to claim 6, characterized in that: The moving mechanism includes two fixed blocks (701) connected to the condenser (106), two guide rods (702) connected between the fixed blocks (701), and a return spring (703) sleeved on the side wall of the guide rod (702); the mounting plate (602) is sleeved on the side wall of the guide rod (702); the moving mechanism also includes a pushing component for pushing the mounting plate (602) to slide along the guide rod (702).

8. A shoe glue dryer according to claim 7, characterized in that: The actuation assembly includes a fifth spring telescopic rod (801) fixedly connected to the bottom of one of the rotating frames (1202) and a second tapered rod (802) connected to the fifth spring telescopic rod (801), allowing the mounting plate (602) to slide along the side wall of the second tapered rod (802).

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