Hot air guide type abrasive paper continuous curing device and curing process

Abstract

The invention relates to the technical field of abrasive paper processing, in particular to a hot air guide type abrasive paper continuous curing device which comprises a curing bin installed at the top end of a base, a bearing plate is arranged in the curing bin, and two sets of mounting frames A and two sets of mounting frames B are welded to the two sides of the surface of the bearing plate correspondingly; wherein an unwinding roller is detachably mounted on the surface of one group of mounting frames A, and a winding roller is mounted on the surface of one group of mounting frames A. Waste gas collected by a gas collecting shell is sucked through a piston rod, compressed and pressed into a guide roller to be heated, so that preliminary softening and uniform distribution of a sizing material are facilitated, and meanwhile, the sizing material is uniformly softened and uniformly distributed. And the gas continues to flow back into the spray pipe located on the upper portion of the device through the gas return pipe and is mixed with fresh hot air supplied by the hot-air blower, so that recycling of waste heat in the waste gas is achieved, energy consumption needed by the hot-air blower for heating the normal-temperature air to the set temperature is reduced, and the energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sandpaper processing, and particularly relates to a hot air guiding type sandpaper continuous curing device and a curing process. BACKGROUND

[0002] As a commonly used grinding tool, sandpaper is widely used in surface grinding and polishing of materials such as metal, wood and ceramic. In the manufacturing process of sandpaper, curing is one of the key processes, and its quality directly affects the grinding performance, service life and product qualification rate of sandpaper. Traditional sandpaper curing devices mostly adopt hot air circulation heating mode, and hot air is sent into the curing bin by a hot air blower to make the adhesive on the sandpaper substrate cross-link at a certain temperature, so as to realize firm combination of the abrasive and the substrate.

[0003] However, a large amount of waste gas generated in the curing process of the traditional hot air curing equipment is usually directly discharged, and the waste heat therein cannot be effectively recovered, resulting in low heat energy utilization rate and increased load and energy consumption of the hot air blower.

[0004] Therefore, the existing problems are researched and improved, and a hot air guiding type sandpaper continuous curing device and a curing process are provided, which aims to solve the problems and improve the practical value through the technology. SUMMARY

[0005] The purpose of the present application is to solve the shortcomings in the prior art and provide a hot air guiding type sandpaper continuous curing device and a curing process.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: a hot air guiding type sandpaper continuous curing device, comprising a curing bin installed at the top end of a base, the inside of the curing bin is provided with a bearing plate, the surface of the bearing plate is welded with two groups of mounting frames A and two groups of mounting frames B, the surface of one group of the mounting frames A is detachably installed with a unwinding roller, the surface of the other group of the mounting frames A is installed with a winding roller, and the surfaces of the two groups of the mounting frames B are installed with guide rollers; The inside of the curing bin is provided with a temperature adjusting mechanism, the temperature adjusting mechanism comprises a hot air blower installed at the top of the curing bin, the output end of the hot air blower is communicated with a hot air pipe, the bottom end of the hot air pipe is installed with a spray pipe, the surface of the hot air pipe is installed with an adjusting valve, the surface of the adjusting valve is rotatably provided with a valve rod, the side wall of the bearing plate is welded with a connecting rod, one end of the connecting rod is fixedly provided with a rack engaged with the valve rod; The top end of the load-bearing plate is provided with a circulating mechanism, the circulating mechanism comprises a gas collecting shell mounted between the two groups of mounting frames B, the side wall of the gas collecting shell is communicated with a suction pipe, the suction pipe is communicated with a connecting pipe between the guide roller and the spray pipe, the guide roller is communicated with a return air pipe between the spray pipe, one end of the unwinding roller is fixed with an eccentric wheel, one side of the return air pipe is slidably sleeved with a groove plate, the bottom end of the groove plate is fixed with a piston rod sliding in the suction pipe. The lower side of the guide roller is provided with an extrusion mechanism.

[0007] Preferably, a plurality of springs are mounted between the load-bearing plate and the base, and a telescopic rod is mounted in the spring.

[0008] Preferably, a one-way valve is arranged in the suction pipe, the suction pipe is arranged in a segmented manner, the connecting part of the suction pipe and the gas collecting shell is a soft pipe, and the connecting part of the suction pipe and the connecting pipe is a hard pipe.

[0009] Preferably, the extrusion mechanism comprises a rotating shaft rotating between the two groups of mounting frames B, the side wall of the rotating shaft is fixed with an extrusion plate, one end of the rotating shaft is fixed with a rotating plate, the side wall of the eccentric wheel is fixed with a lever, the rotating plate and the lever are intermittently contacted, and the lever drives the rotating plate to rotate around the axis.

[0010] Preferably, the surface of the extrusion plate is arranged in an arc shape, and a first torsion spring is arranged between the side wall of the mounting frame B and the side wall of the rotating plate.

[0011] Preferably, the side wall of the rotating plate is fixed with a connecting frame, and a beating roller is arranged below the sand cloth.

[0012] Preferably, the outer wall of the spray pipe is sleeved with a winding drum, the outer wall of the winding drum is wound with a pull rope, one end of the pull rope is fixedly connected with one end of the rotating plate, the outer wall of the spray pipe is sleeved with a second torsion spring, one end of the second torsion spring is fixedly connected with the outer wall of the spray pipe, and the other end of the second torsion spring is fixedly connected with the inner wall of the curing bin.

[0013] Preferably, a limiting rod is fixed to the side wall of the load-bearing plate, and the pull rope slides on the outer wall of the limiting rod.

[0014] A hot air guide type sandpaper continuous curing process, the curing process comprising the following steps: S1: positioning and feeding, the sand cloth is mounted on the unwinding roller, fixed on the winding roller through the guide roller, the load-bearing plate is lowered due to the weight of the sand cloth, the adjusting valve is opened to the maximum through the meshing of the rack and the valve rod, and the air blower is started to blow air; S2: preheating recovery, the abrasive cloth is driven to travel through the unwinding roller and the winding roller, the unwinding roller drives the eccentric wheel to rotate, the piston rod is moved back and forth along the air suction pipe through the groove plate, waste gas is sucked and sent into the guide roller, and the back surface of the abrasive cloth is preheated; S3: dynamic curing, hot air is sprayed to the front surface of the abrasive cloth through the hot air pipe, the adjusting valve and the spray pipe, after the abrasive cloth is cured and reduced in weight, the load plate moves up under the action of the spring, the adjusting valve opening is adjusted through the rack and the valve rod, and the air volume is adaptively controlled; S4: extrusion shaping, the eccentric wheel drives the rotating plate to push the extrusion plate to reciprocate and extrude the abrasive cloth around the rotating shaft, the rotating plate drives the connecting frame and the beating roller to beat the abrasive cloth, and finally, the finished product is wound by the winding roller.

[0015] Compared with the prior art, the present application has the following advantages: 1. The present application utilizes the large weight of uncured abrasive cloth to push the load plate down, adjusts the valve rod through the connecting rod and rack mechanism, increases the opening, sprays hot air at the maximum air volume, realizes rapid temperature rise and curing, and as the adhesive cures and the weight decreases, the spring pushes the load plate up, reversely drives the valve rod to close the valve, reduces the air supply volume, reduces the temperature in the later stage, realizes dynamic and adaptive adjustment of the curing temperature on the process, thereby avoiding quality problems such as deformation of the abrasive cloth and coking of the adhesive caused by constant high temperature, improving the product qualification rate and quality stability, and at the same time, the design realizes on-demand supply of energy without external power supply or complex electric control system, effectively reduces unnecessary energy consumption in the later stage while ensuring the curing efficiency.

[0016] 2. The present application drives the eccentric wheel through the rotation of the unwinding roller, drives the groove plate and the piston rod to reciprocate in the air suction pipe. When the piston rod moves up, negative pressure is generated in the air suction pipe, and the waste gas collected in the gas collecting shell is sucked in through the one-way valve; when the piston rod moves down, the waste gas is compressed and pressed into the guide roller to heat it, thereby helping the preliminary softening and uniform distribution of the adhesive, and at the same time, the gas continues to flow back to the inside of the spray pipe located at the upper part of the device, mixes with the fresh hot air supplied by the hot air machine, thereby realizing the recycling of waste heat, reducing the energy consumption required for the hot air machine to heat the normal temperature air to the set temperature, and achieving the energy saving effect.

[0017] 3、The present application drives the push rod to rotate synchronously through the eccentric wheel rotation, the push rod will periodically contact and push the rotating plate, the rotating plate drives the extrusion plate to deflect, thereby implementing extrusion on the abrasive cloth passing through the bottom of the guide roller, when the push rod and the rotating plate are out of contact, the first torsional spring immediately releases the accumulated torsional force, drives the rotating plate together with the extrusion plate to reset quickly, forming stable and rhythmic intermittent extrusion on the abrasive cloth, when the binder is in a molten or semi-solid state, the extrusion force forces the binder to wrap the abrasive particles more tightly and fully fills the small gap between the abrasive and the substrate, enhances the bonding force between the abrasive, the binder and the substrate, so that the abrasive is more difficult to fall off after solidification, thereby prolonging the service life of the sandpaper, at the same time, the reciprocating swing of the rotating plate also drives the connecting frame to move synchronously, the beating roller at the end of the connecting frame thus continuously and gently beats the surface of the abrasive cloth, the static air boundary layer attached to the surface of the abrasive cloth is broken through beating, so that the hot air blown out of the nozzle can penetrate into the deep layer of the abrasive cloth, thereby assisting to improve the heating efficiency and shorten the overall solidification time. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the solidification bin sectional structure schematic diagram of the present application; Figure 3 It is the solidification bin sectional structure schematic diagram of the present application; Figure 2 It is the A part enlarged structure schematic diagram of the present application; Figure 4 It is the part structure schematic diagram of the present application; Figure 5 It is the part structure schematic diagram of the present application; Figure 6 It is the part structure schematic diagram of the present application; Figure 7 It is the part structure schematic diagram of the present application;

[0019] Legend: 1, solidification bin; 2, bearing plate; 3, mounting frame A; 4, mounting frame B; 5, unwinding roller; 6, winding roller; 7, guide roller; 81, spring; 82, hot air blower; 83, hot air pipe; 84, nozzle; 85, regulating valve; 86, valve rod; 87, rack; 88, connecting rod; 91, gas collecting shell; 92, air suction pipe; 93, connecting pipe; 94, air return pipe; 95, eccentric wheel; 96, groove plate; 97, piston rod; 101, rotating shaft; 102, extrusion plate; 103, rotating plate; 104, push rod; 105, connecting frame; 106, beating roller; 11, winding drum; 12, pull rope; 13, limiting rod; 14, base. DETAILED DESCRIPTION

[0020] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0021] Referring to Figures 1 to 7 As shown in the drawings, the present application provides a hot air guiding type sandpaper continuous curing device, which comprises a curing bin 1 installed at the top end of a base 14, the inside of the curing bin 1 is provided with a load-bearing plate 2, the surface of the load-bearing plate 2 is welded with two groups of mounting frames A 3 and two groups of mounting frames B 4 on both sides, the surface of one group of mounting frames A 3 is detachably installed with an unwinding roller 5, the surface of the other group of mounting frames A 3 is installed with a winding roller 6, and the surface of the two groups of mounting frames B 4 is installed with a guide roller 7; The inside of the curing bin 1 is provided with a temperature adjusting mechanism, the temperature adjusting mechanism comprises a hot air blower 82 installed at the top of the curing bin 1, the output end of the hot air blower 82 is communicated with a hot air pipe 83, the bottom end of the hot air pipe 83 is installed with a spray pipe 84, the surface of the hot air pipe 83 is installed with an adjusting valve 85, the surface of the adjusting valve 85 is rotatably provided with a valve rod 86, the side wall of the load-bearing plate 2 is welded with a connecting rod 88, one end of the connecting rod 88 is fixedly provided with a rack 87 engaged with the valve rod 86; It should be noted that when the abrasive cloth coated with uncured adhesive starts running, its weight is large, which is fully applied to the bearing plate 2 through the unwinding roller 5 and the winding roller 6, forcing the bearing plate 2 to move downward against the elastic force of the spring 81, and the downward movement of the bearing plate 2 is transmitted to the rack 87 fixed to the end thereof through the connecting rod 88 welded to the side wall thereof, and since the rack 87 is in mesh with the valve rod 86 mounted on the adjusting valve 85, the linear motion of the rack 87 is converted into the rotary motion of the valve rod 86, thereby increasing the opening degree of the adjusting valve 85, at this time, the air volume of the hot air generated from the hot air generator 82 to the abrasive cloth via the hot air pipe 83 and the spray pipe 84 reaches the maximum, which ensures rapid temperature rise in the initial curing stage and realizes efficient curing, as the curing reaction proceeds, the adhesive on the abrasive cloth gradually solidifies, the solvent volatilizes, and the overall weight thereof decreases, the pressure on the bearing plate 2 decreases, and the restoring force of the spring 81 can push the bearing plate 2 to return upward, the bearing plate 2 drives the rack 87 to move upward through the connecting rod 88, and then drives the valve rod 86 to rotate reversely, thereby automatically reducing the opening degree of the adjusting valve 85, thereby reducing the hot air supply in the later stage of the abrasive cloth curing, and reducing the curing temperature, realizing the dynamic and self-adaptive adjustment of the curing temperature to the process, thereby avoiding the quality problems such as deformation of the abrasive cloth and coking of the adhesive caused by constant high temperature, improving the product qualification rate and quality stability, at the same time, the design realizes the on-demand supply of energy without external power supply or complex electrical control system, which effectively reduces unnecessary energy consumption in the later stage while ensuring the curing efficiency.

[0022] The top end of the bearing plate 2 is provided with a circulating mechanism, which comprises a gas collecting shell 91 mounted between the two groups of mounting frames B4, the side wall of the gas collecting shell 91 is communicated with a suction pipe 92, the suction pipe 92 and the guide roller 7 are communicated with a connecting pipe 93, the guide roller 7 and the spray pipe 84 are communicated with a return air pipe 94, one end of the unwinding roller 5 is fixed with an eccentric wheel 95, one side of the return air pipe 94 is slidably sleeved with a groove plate 96, the bottom end of the groove plate 96 is fixed with a piston rod 97 sliding in the suction pipe 92; It should be noted that when the unwinding roller 5 rotates, the eccentric wheel 95 is driven to rotate by the unwinding roller 5, and the eccentric structure of the eccentric wheel 95 drives the groove plate 96 to move up and down along the surface of the groove plate 96. During the up and down movement of the groove plate 96, the groove plate 96 drives the piston rod 97 to move up and down synchronously inside the suction pipe 92. When the piston rod 97 moves upward, a negative pressure is generated inside the suction pipe 92. Since the suction pipe 92 is provided with a one-way valve, the negative pressure will suck the used waste gas collected by the gas collecting shell 91 below the abrasive cloth into the suction pipe 92. Then, when the piston rod 97 moves downward, it compresses the sucked gas and pressurizes the gas into the inside of the guide roller 7 connected by the connecting pipe 93, thereby heating the guide roller 7 itself, so that the guide roller 7 becomes a constant heat source, uniformly and gently preheats the back of the abrasive cloth during its movement, thereby helping the preliminary softening and uniform distribution of the rubber compound, and completing the preheating function. After this, the gas continues to flow back to the inside of the nozzle 84 located at the upper part of the device through the back gas pipe 94, and mixes with the fresh hot air supplied by the hot air machine 82, thereby realizing the recycling of the waste heat in the waste gas, reducing the energy consumption required for the hot air machine 82 to heat the normal temperature air to the set temperature, and achieving the energy saving effect.

[0023] The lower part of the guide roller 7 is provided with an extrusion mechanism.

[0024] In an optional embodiment, a plurality of springs 81 are installed between the load-bearing plate 2 and the base 14. The inside of the spring 81 is provided with a telescopic rod, which provides rigid guidance for the vertical movement of the load-bearing plate 2, prevents it from deviating or twisting during movement, and ensures the linearity and accuracy of the movement of the connecting rod 88 and the rack 87 connected thereto, thereby ensuring the reliability and stability of the entire temperature adjusting mechanism.

[0025] In an optional embodiment, the inside of the suction pipe 92 is provided with a one-way valve, and the suction pipe 92 is provided in a segmented manner. The connection part of the suction pipe 92 and the gas collecting shell 91 is a soft pipe, and the connection part of the suction pipe 92 and the connecting pipe 93 is a hard pipe. The one-way valve ensures that the hot gas in the suction pipe 92 can only flow to the guide roller 7 in one direction, preventing backflow and ensuring pumping efficiency. The soft pipe part connected with the gas collecting shell 91 can adapt to the position change caused by the floating of the load-bearing plate 2, avoiding pipe body distortion or rupture. The hard pipe part connected with the connecting pipe 93 provides stable support, ensuring the stability of air suction and compression, thereby ensuring the continuity of the heat recovery process.

[0026] In an alternative embodiment, the pressing mechanism comprises a rotating shaft 101 rotating between the two groups of mounting frames B4, the side wall of the rotating shaft 101 is fixed with a pressing plate 102, one end of the rotating shaft 101 is fixed with a rotating plate 103, the side wall of the eccentric wheel 95 is fixed with a push rod 104, the rotating plate 103 is in intermittent contact with the push rod 104, the push rod 104 drives the rotating plate 103 to rotate around its axis.

[0027] In an alternative embodiment, the surface of the pressing plate 102 is arc-shaped, a first torsion spring is installed between the side wall of the mounting frame B4 and the side wall of the rotating plate 103.

[0028] In an alternative embodiment, the side wall of the rotating plate 103 is fixed with a connecting frame 105, the side wall of the connecting frame 105 is fixed with a beating roller 106 below the abrasive cloth.

[0029] In an alternative embodiment, the outer wall of the spray pipe 84 is sleeved with a winding drum 11, the outer wall of the winding drum 11 is wound with a pull rope 12, one end of the pull rope 12 is fixedly connected with one end of the rotating plate 103, the outer wall of the spray pipe 84 is sleeved with a second torsion spring, one end of the second torsion spring is fixedly connected with the outer wall of the spray pipe 84, the other end of the second torsion spring is fixedly connected with the inner wall of the curing bin 1.

[0030] In an alternative embodiment, the side wall of the bearing plate 2 is fixed with a limiting rod 13, the pull rope 12 slides on the outer wall of the limiting rod 13.

[0031] It should be noted that when the eccentric wheel 95 rotates, the push rod 104 fixed to the side wall thereof rotates synchronously, in the process of rotation, the push rod 104 will periodically contact and push the rotating plate 103, forcing the rotating plate 103 to rotate around its rotating shaft 101 by a certain angle, at the same time, the rotating plate 103 rotates to make the first torsion spring connected between the rotating plate 103 and the mounting frame B4 accumulate energy, the rotation of the rotating shaft 101 directly drives the pressing plate 102 fixed thereto to deflect, thereby implementing a strong pressing on the abrasive cloth passing through the bottom of the guide roller 7, when the push rod 104 and the rotating plate 103 are out of contact, the first torsion spring immediately releases the accumulated torsion, driving the rotating plate 103 and the pressing plate 102 to reset quickly, which forms a stable and rhythmic intermittent pressing on the abrasive cloth, when the bonding agent is in a molten or semi-solid state, the pressing force forces the bonding agent to wrap the abrasive particles more tightly and fully fill the tiny gaps between the abrasive and the substrate, enhancing the bonding force between the abrasive, the bonding agent and the substrate, making it more difficult for the abrasive to fall off after solidification, thereby prolonging the service life of the sandpaper, at the same time, this process can effectively eliminate the tiny bubbles generated by the evaporation of volatile substances in the early curing process, avoiding defects such as pinholes and delamination in the final product, improving the product density and appearance quality; At the same time, the reciprocating swing of the rotating plate 103 also drives the connecting frame 105 fixed on it to move synchronously. The striking roller 106 at the end of the connecting frame 105 thus continuously and gently taps the surface of the abrasive cloth. On the one hand, the tapping can break the static air boundary layer attached to the surface of the abrasive cloth, allowing the hot air blown out by the nozzle 84 to penetrate deeper into the abrasive cloth, thereby helping to improve heating efficiency and shorten the overall curing time. On the other hand, the vibration itself further promotes the molecular flow and rearrangement inside the adhesive, and works in synergy with the extrusion action to jointly improve the uniformity and adhesion of the final cured coating. Furthermore, when the rotating plate 103 reciprocates under the push of the lever 104 and the reset action of the first torsion spring, it periodically pulls the pull rope 12 fixed to it at one end. The pull rope 12 passes around the limiting rod 13 used for limiting, and its other end drives the winding drum 11 sleeved on the outer wall of the nozzle 84 to rotate. Since the connection between the hot air pipe 83 and the nozzle 84 is made of soft material, when the rotating plate 103 rotates and pulls the pull rope 12, the nozzle 84 deflects against the torque of the second torsion spring. 3. When the first torsion spring resets and the tension on the pull rope 12 disappears, the elastic potential energy stored in the second torsion spring will be released immediately, driving the nozzle 84 to swing back to its original position. Through the cycle of pulling and releasing, the intermittent swing of the rotating plate 103 is finally converted into the continuous reciprocating swing of the nozzle 84. The hot air from the outlet of the swinging nozzle 84 is evenly swept across the moving sandpaper surface, avoiding local overheating, charring of the rubber, or damage to the substrate that may be caused by the hot air being directly shone on the same fixed point for a long time.

[0032] A hot air-guided continuous curing process for sandpaper includes the following steps: S1: Loading and positioning, the sandpaper is loaded onto the unwinding roller 5 and fixed to the winding roller 6 via the guide roller 7. The load-bearing plate 2 moves down due to the weight of the sandpaper. The regulating valve 85 is opened to the maximum through the meshing of the rack 87 and the valve stem 86, and the hot air blower 82 is started to blow air. S2: Preheating and recycling, the abrasive cloth is driven to move forward by the unwinding roller 5 and the winding roller 6. The unwinding roller 5 drives the eccentric wheel 95 to rotate, and the piston rod 97 reciprocates along the suction pipe 92 through the groove plate 96, sucking in the exhaust gas and sending it into the guide roller 7 to preheat the back of the abrasive cloth. S3: Dynamic curing. Hot air is sprayed onto the front of the abrasive cloth through hot air pipe 83, regulating valve 85 and spray pipe 84. After the abrasive cloth cures and reduces weight, the load-bearing plate 2 moves upward under the action of spring 81. The opening of regulating valve 85 is adjusted by rack 87 and valve stem 86 to adaptively control the air volume. S4: Extrusion shaping. The eccentric wheel 95 pushes the rotating plate 103 through the lever 104, causing the extrusion plate 102 to reciprocate around the rotating shaft 101 to extrude the abrasive cloth. The rotating plate 103 drives the connecting frame 105 and the striking roller 106 to strike the abrasive cloth. Finally, the winding roller 6 winds up the finished product.

[0033] Working principle: when the sand cloth coated with uncured adhesive begins to run, its weight is large, which is fully applied to the bearing plate 2 through the unwinding roller 5 and the winding roller 6, forcing the bearing plate 2 to move downward against the elastic force of the spring 81, the downward movement of the bearing plate 2 is transmitted to the rack 87 fixed at the end thereof through the connecting rod 88 welded on the side wall thereof, and the linear motion of the rack 87 is converted into the rotary motion of the valve rod 86 mounted on the adjusting valve 85, so as to increase the opening of the adjusting valve 85, at this time, the hot air generated from the hot air machine 82 reaches the maximum amount through the hot air pipe 83 and the spray pipe 84, ensuring that the temperature can be quickly raised in the initial curing stage, realizing efficient curing, as the curing reaction proceeds, the adhesive on the sand cloth gradually solidifies, the solvent volatilizes, and the overall weight of the sand cloth decreases, the pressure on the bearing plate 2 decreases, and the restoring force of the spring 81 can push the bearing plate 2 to return upward, the bearing plate 2 drives the rack 87 to move upward through the connecting rod 88, and in turn drives the valve rod 86 to rotate reversely, automatically reducing the opening of the adjusting valve 85; When the unwinding roller 5 rotates, the eccentric wheel 95 is driven to rotate by the unwinding roller 5, and the eccentric structure of the eccentric wheel 95 drives the groove plate 96 to move up and down along the surface thereof, and in the process of moving up and down, the groove plate 96 drives the piston rod 97 to move up and down synchronously in the interior of the suction pipe 92, when the piston rod 97 moves upward, a negative pressure is generated in the interior of the suction pipe 92, and since the interior of the suction pipe 92 is provided with a one-way valve, the negative pressure can suck the used waste gas collected by the gas collecting shell 91 below the sand cloth into the suction pipe 92, and then, when the piston rod 97 moves downward, it compresses the sucked gas and pressurizes the gas into the interior of the guide roller 7 through the connecting pipe 93, so as to heat the guide roller 7 itself, and the guide roller 7 becomes a constant heat source to uniformly and gently preheat the back of the sand cloth in the process of running; When the eccentric wheel 95 rotates, the push rod 104 fixed on the side wall thereof rotates synchronously, and in the process of rotating, the push rod 104 periodically contacts and pushes the rotating plate 103, forcing the rotating plate 103 to rotate by a certain angle around the rotating shaft 101, and in the process of rotating, the rotating plate 103 drives the first torsional spring connected between the rotating plate 103 and the mounting frame B4 to accumulate energy, and the rotation of the rotating shaft 101 directly drives the deflection of the extrusion plate 102 fixed thereon, so as to implement a powerful extrusion on the sand cloth passing through the bottom of the guide roller 7, when the push rod 104 and the rotating plate 103 are out of contact, the first torsional spring immediately releases the accumulated torsional force, driving the rotating plate 103 and the extrusion plate 102 to quickly reset, and the cycle is repeated, forming a stable and rhythmic intermittent extrusion on the sand cloth; At the same time, the reciprocating swing of the rotating plate 103 also drives the synchronous movement of the connecting frame 105 fixed thereon, and the beating roller 106 at the end of the connecting frame 105 thus continuously and gently beats the surface of the sand cloth; Further, when the rotating plate 103 reciprocating rotates under the pushing of the dialing lever 104 and the resetting action of the first torsion spring, it will periodically pull the pull rope 12 fixed at one end, the pull rope 12 passes through the limiting rod 13 for limiting, and the other end drives the winding drum 11 sleeved on the outer wall of the spray pipe 84 to rotate. Since the connecting part of the hot air pipe 83 and the spray pipe 84 is made of soft material, when the rotating plate 103 rotates to pull the pull rope 12, the spray pipe 84 is deflected to overcome the torque of the second torsion spring, the rotating plate 103 resets under the action of the first torsion spring, and the pulling force of the pull rope 12 disappears. The elastic potential energy stored by the second torsion spring is immediately released to drive the spray pipe 84 to swing back in the reverse direction. Through the cycle of pulling and loosening, the intermittent swing of the rotating plate 103 is finally converted into the continuous reciprocating swing of the spray pipe 84.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A hot air guiding type continuous sand paper curing device comprising a curing bin (1) installed at the top end of a base (14), characterized in that: The inside of the curing bin (1) is provided with a load-bearing plate (2), the surface of the load-bearing plate (2) is welded with two groups of mounting frames A (3) and two groups of mounting frames B (4), the surface of one group of the mounting frames A (3) is detachably provided with a unwinding roller (5), the surface of the other group of the mounting frames A (3) is provided with a winding roller (6), and the surface of the two groups of the mounting frames B (4) is provided with a guide roller (7). The inside of the curing bin (1) is provided with a temperature adjusting mechanism, the temperature adjusting mechanism comprises a hot air blower (82) mounted on the top of the curing bin (1), the output end of the hot air blower (82) is communicated with a hot air pipe (83), the bottom end of the hot air pipe (83) is provided with a spray pipe (84), the surface of the hot air pipe (83) is provided with an adjusting valve (85), the surface of the adjusting valve (85) is rotatably provided with a valve rod (86), the side wall of the load-bearing plate (2) is welded with a connecting rod (88), and one end of the connecting rod (88) is fixedly provided with a rack (87) engaged with the valve rod (86). The top end of the load-bearing plate (2) is provided with a circulating mechanism, the circulating mechanism comprises a gas collecting shell (91) mounted between the two groups of mounting frames B (4), the side wall of the gas collecting shell (91) is communicated with an air suction pipe (92), the air suction pipe (92) and the guide roller (7) are communicated with a connecting pipe (93), the guide roller (7) and the spray pipe (84) are communicated with a gas return pipe (94), one end of the unwinding roller (5) is fixedly provided with an eccentric wheel (95), one side of the gas return pipe (94) is slidably provided with a groove plate (96), and the bottom end of the groove plate (96) is fixedly provided with a piston rod (97) slidably arranged in the air suction pipe (92). The lower side of the guide roller (7) is provided with an extrusion mechanism.

2. The hot air guide type sand paper continuous curing device according to claim 1, characterized in that: A plurality of springs (81) are mounted between the load-bearing plate (2) and the base (14), and the inside of the spring (81) is provided with a telescopic rod.

3. The hot air directing type sand paper continuous curing device according to claim 1, characterized in that: The inside of the air suction pipe (92) is provided with a one-way valve, the air suction pipe (92) is provided in a segmented manner, the connecting part of the air suction pipe (92) and the gas collecting shell (91) is a soft pipe, and the connecting part of the air suction pipe (92) and the connecting pipe (93) is a hard pipe.

4. The hot air directing type sand paper continuous curing device according to claim 1, characterized in that: The extrusion mechanism comprises a rotating shaft (101) rotatably arranged between the two groups of mounting frames B (4), the side wall of the rotating shaft (101) is fixedly provided with an extrusion plate (102), one end of the rotating shaft (101) is fixedly provided with a rotating plate (103), the side wall of the eccentric wheel (95) is fixedly provided with a lever (104), the rotating plate (103) and the lever (104) are intermittently contacted, and the lever (104) drives the rotating plate (103) to rotate around the axis.

5. The hot air directing type sand paper continuous curing apparatus according to claim 4, characterized in that: The surface of the extrusion plate (102) is provided in an arc shape, and a first torsional spring is mounted between the side wall of the mounting frame B (4) and the side wall of the rotating plate (103).

6. The hot air directing type sand paper continuous curing apparatus according to claim 4, characterized by: The side wall of the rotating plate (103) is fixedly provided with a connecting frame (105), and the side wall of the connecting frame (105) is fixedly provided with a beating roller (106) located below the sand cloth.

7. The hot air directing type sand paper continuous curing apparatus according to claim 4, characterized by: The outer wall of the spray pipe (84) is sleeved with a winding drum (11), the outer wall of the winding drum (11) is wound with a pull rope (12), one end of the pull rope (12) is fixedly connected with one end of the rotating plate (103), the outer wall of the spray pipe (84) is sleeved with a second torsional spring, one end of the second torsional spring is fixedly connected with the outer wall of the spray pipe (84), and the other end of the second torsional spring is fixedly connected with the inner wall of the curing bin (1).

8. The hot air directing type sand paper continuous curing device according to claim 7, characterized by: The side wall of the load-bearing plate (2) is fixedly connected with a limiting rod (13), and the pull rope (12) slides on the outer wall of the limiting rod (13).

9. A hot air guiding type sand paper continuous curing process applied to the hot air guiding type sand paper continuous curing device according to any one of claims 1 to 8, characterized in that: Its curing process Comprise the following steps: S1: feeding positioning, the abrasive cloth is mounted on the unwinding roller (5), is fixed on the winding roller (6) through the guide roller (7), the load-bearing plate (2) is lowered due to the weight of the abrasive cloth, the adjusting valve (85) is opened to the maximum through the meshing of the rack (87) and the valve rod (86), and the air heater (82) is started to blow air; S2: preheating recovery, the abrasive cloth is driven to advance through the unwinding roller (5) and the winding roller (6), the eccentric wheel (95) is rotated by the unwinding roller (5), the piston rod (97) is reciprocated along the air suction pipe (92) through the slot plate (96), the exhaust gas is sucked and sent into the guide roller (7), and the back surface of the abrasive cloth is preheated; S3: dynamic curing, the hot air is sprayed to the front surface of the abrasive cloth through the hot air pipe (83), the adjusting valve (85) and the spray pipe (84), the load-bearing plate (2) is moved upward under the action of the spring (81) after the abrasive cloth is cured and lightened, the opening degree of the adjusting valve (85) is adjusted through the rack (87) and the valve rod (86), and the air volume is adaptively controlled; S4: extrusion shaping, the eccentric wheel (95) pushes the rotating plate (103) through the push rod (104), so that the extrusion plate (102) reciprocatingly deflects and extrudes the abrasive cloth around the rotating shaft (101), the rotating plate (103) drives the connecting frame (105) and the beating roller (106) to beat the abrasive cloth, and finally the winding roller (6) winds the finished product.

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