Polyurethane enameled wire production forming processing equipment

Abstract

The invention relates to the technical field of polyurethane enameled wire production, in particular to polyurethane enameled wire production forming treatment equipment which comprises a baking furnace, an exhaust pipe and flow guide pipes and further comprises two flow guide parts, a first motor, a rotating rod, a first hollow pipe, an adjusting assembly and a guiding assembly. And an air outlet nozzle is arranged on one side, close to the center of the baking furnace, of the flow guide part. Through the rotating rod, the rubber plug and the second guide roller, the amount of hot air discharged through the air outlet nozzle in unit time can be reduced when the flat polyurethane enameled wire with the large width-to-width ratio is baked, the influence of air pressure on the thickness of a polyester paint layer wrapping the narrow edge of the flat polyurethane enameled wire is reduced, meanwhile, the height of the second guide roller can be reduced, and the production efficiency is improved. The moving path of the flat polyurethane enameled wire in the baking furnace is prolonged, namely the baking time of the flat polyurethane enameled wire is prolonged, and the quality of the baked flat polyurethane enameled wire is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of polyurethane enameled wire production, and specifically to a polyurethane enameled wire production and forming processing device. Background Art

[0002] Enameled wire is a main type of winding wire, consisting of a conductor and an insulating layer. The production process of enameled wire is: wire feeding → annealing → painting → baking → cooling → lubrication → wire taking. According to the different insulating layer materials on the surface of the enameled wire, it can be divided into different types such as polyurethane enameled wire, polyester enameled wire, and polyimide enameled wire. Among them, polyurethane enameled wire is widely used due to its advantages such as a small dielectric loss factor, good flexibility, good adhesion, good dyeability, and good direct solderability.

[0003] Enameled wire includes round enameled wire and flat enameled wire. Due to the surface tension of the round enameled wire, the paint liquid can be evenly distributed. During the baking process, since the radial cross-sectional shape of the round enameled wire is circular, the heat conduction path is relatively consistent, and the polyurethane paint can be evenly wrapped on the surface of the conductor and cured after baking in the baking furnace, thus ensuring the quality of the enameled wire. However, the radial cross-section of the flat enameled wire has poorer symmetry compared to the round enameled wire. Since the heat source position in the baking furnace is fixed and the wide side of the flat enameled wire will block the heat radiation, the curing speed and degree of the polyurethane paint at different positions on the surface of the enameled wire are different, which will affect the quality of the enameled wire. For the above problems, there are already good solutions in the prior art. For example, a baking furnace for flat enameled wire with the patent number CN112802638B uses the exhaust gas discharged from the baking furnace to exchange heat with the external air and then transports the external air to the inside of the baking furnace, so that each position in the baking furnace can uniformly obtain the heat in the air, solving the problem that one side of the enameled wire is over-baked while the other side is not baked enough, and effectively ensuring the quality of the enameled wire. However, there are still the following defects: the heat source position of the baking furnace itself and the wire threading position of the enameled wire in the furnace of the baking furnace are fixed. Since the width-to-width ratio of the flat enameled wire is between 1.4:1 and 8:1, and the distance from the port of the hot air transported to the baking furnace to the center position of the baking furnace remains unchanged, the larger the width-to-width ratio of the enameled wire, the more obvious the blocking effect of the wide side on the heat radiation, which will cause the wind pressure of the hot air blowing on the narrow side of the flat enameled wire to be greater, resulting in uneven thickness of the polyurethane paint coated on the flat enameled wire and still affecting the quality of the flat polyurethane enameled wire.

[0004] Therefore, in order to solve the above problems, a polyurethane enameled wire production and forming processing device is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a production and forming processing device for polyurethane enameled wire, which solves the problem that when baking flat polyurethane enameled wire with a large width-to-narrow ratio, the wind pressure generated by hot air will cause the thickness of the polyester paint at the wide side and the narrow side positions to be uneven after curing, thus affecting the quality of the flat polyurethane enameled wire. By setting the rotating rod, rubber plug and guide roller II, it is possible to reduce the amount of hot air discharged through the air outlet nozzle per unit time when baking flat polyurethane enameled wire with a large width-to-narrow ratio, reduce the influence of the wind pressure on the thickness of the polyester paint layer coated on the narrow side of the flat polyurethane enameled wire, and at the same time, the height of the guide roller II can be lowered to extend the moving path of the flat polyurethane enameled wire in the baking furnace, that is, extend the baking time of the flat polyurethane enameled wire, effectively ensuring the quality of the baked flat polyurethane enameled wire.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A production and forming processing device for polyurethane enameled wire, including a baking furnace, an exhaust pipe and a diversion pipe, further including a diversion member, a motor I, a rotating rod, a hollow pipe I, an adjustment assembly and a guiding assembly. The diversion member is arranged inside the baking furnace and there are two of them. The diversion member is hollow and has an air outlet nozzle on the side close to the center of the baking furnace. The motor I is arranged inside the baking furnace. The rotating rod is arranged at the output end of the motor I. The surface of the hollow pipe I is provided with a fixing rod and is fixedly arranged inside the baking furnace through the fixing rod. The lower end of the diversion pipe penetrates into the interior of the hollow pipe I. The adjustment assembly is arranged on the hollow pipe I and is connected to the two diversion members. When the rotating rod rotates forward or backward, the adjustment assembly drives the two diversion members to approach or move away from each other respectively. The guiding assembly is arranged inside the baking furnace and is connected to the rotating rod. When the two diversion members approach or move away from each other, the guiding assembly respectively reduces or increases the moving path of the flat polyurethane enameled wire in the baking furnace.

[0008] By adopting the above scheme, it is possible to increase the distance between the two diversion members when baking flat polyurethane enameled wire with a large width-to-narrow ratio, avoid the uneven thickness of the polyurethane paint coated on the narrow side due to the large wind pressure when the air outlet nozzle rotates to the narrow side position following the diversion member, and at the same time, it is possible to extend the moving path of the enameled wire in the baking furnace, avoid the problem of affecting the drying effect of the enameled wire due to the reduction of the heat source, and effectively ensure the quality of the baked flat polyurethane enameled wire.

[0009] Preferably, the adjusting assembly includes a second hollow tube, a worm gear, a worm, a second motor, a ball, an extrusion sleeve, a stop rod, a spring, and a plugging assembly. The second hollow tube is coaxially sleeved inside the first hollow tube and a hose is arranged at one end. The flow guide member is connected to the second hollow tube through the hose. The first hollow tube is rotatably sleeved with the second hollow tube through a sealing bearing at both ends. The worm gear is sleeved on the second hollow tube. The second motor is arranged outside the baking furnace. The worm is engaged on one side of the worm gear and one end penetrates through the baking furnace and is connected to the output end of the second motor. Flanges I are arranged at both ends of the flow guide member. The balls are embedded on the surface of the flange I. The extrusion sleeve is coaxially sleeved outside the first hollow tube and is in rolling contact with the balls. A strip-shaped opening is formed in the side wall of the extrusion sleeve and the outer diameter decreases from the end of the flow guide member to the middle. The fixing rod penetrates through the strip-shaped opening. A flange II is arranged at the bottom of the extrusion sleeve. A first thread is arranged on the rod wall of the rotating rod. The flange II is in threaded connection with the rotating rod through the first thread. The stop rod penetrates through the flange I and is connected to the second hollow tube. The spring is sleeved on the stop rod and is connected to the flange I and the stop rod. Air guide openings are formed on the inner surface of the first hollow tube and the outer surface of the second hollow tube. An air outlet hole is formed at the right end of the second hollow tube on the right side. The plugging assembly is arranged on the extrusion sleeve. When the extrusion sleeve moves left or right, the plugging assembly respectively reduces or increases the plugging range of the air outlet hole.

[0010] It can be seen that the flat polyurethane enameled wire has a wide side and a narrow side. The larger the width-to-narrow ratio is, the smaller the distance for the air outlet nozzle to rotate with the flow guide member to face the narrow side is, and the greater the wind pressure for the hot air to blow out from the air outlet nozzle to the narrow side is. It is easier to cause the uneven thickness of the polyurethane coating on the narrow side, thus affecting the quality of the flat polyurethane enameled wire. Therefore, this solution is adopted. Through the arranged extrusion sleeve, the distance between the two flow guide members can be enlarged when the extrusion sleeve approaches the air outlet nozzle, avoiding the situation that the distance between the flow guide member and the narrow side is too close when the flow guide member drives the air outlet nozzle to turn to face the narrow side, and further avoiding the uneven thickness of the polyurethane coating on the narrow side due to the large wind pressure, effectively ensuring the quality of the flat polyurethane enameled wire after baking.

[0011] Preferably, one side of the flow guide member close to the center of the baking furnace is inclined, and a plurality of air outlet nozzles are arranged. The distance between the air outlet nozzles and the center of the baking furnace decreases from left to right.

[0012] By adopting the above solution, the hot air blown out from the left end of the flow guide member can be farthest from the flat polyurethane enameled wire, making the temperature blowing towards the flat polyurethane enameled wire gradually increase from left to right, realizing the progressive baking of the flat polyurethane enameled wire, avoiding the situation that the flat polyurethane enameled wire is blown away by the hot air when it just enters the baking furnace because the curing degree of the polyurethane coating on the surface is poor, and effectively ensuring the baking effect.

[0013] Preferably, the diameters of the ends of each air outlet nozzle communicating with the outside of the flow guide member are equal, and the diameters of the ends of the air outlet nozzle communicating with the inside of the flow guide member increase from left to right.

[0014] By adopting the above scheme, the air pressure of the hot air blown out from multiple air outlet nozzles can gradually increase from left to right, further avoiding the situation that the polyurethane paint is blown away by the hot air when the curing degree is poor, that is, further ensuring the baking effect on the flat polyurethane enameled wire.

[0015] Preferably, the plugging assembly includes a rubber plug and a connecting rod. The rubber plug penetrates through the air outlet hole, and the connecting rod is arranged outside the second hollow tube and is respectively connected to the rubber plug and the extrusion sleeve at both ends.

[0016] It can be known that the larger the width-to-width ratio of the flat polyurethane enameled wire, the smaller the distance between the air outlet nozzle and the narrow side when the air outlet nozzle is facing the narrow side position, and the greater the air pressure caused by the hot air blown out from the air outlet nozzle to the narrow side, which is more likely to cause the change of the thickness of the polyurethane paint coated on the narrow side. Therefore, this scheme is adopted. When baking the flat polyurethane enameled wire with a large width-to-width ratio, the amount of hot air flowing in and out of the flow guide member per unit time can be reduced, thereby reducing the air pressure caused by the air outlet nozzle to the narrow side when the air outlet nozzle is facing the narrow side, avoiding the change of the thickness of the polyurethane paint coated on the narrow side, and effectively ensuring the quality of the flat polyurethane enameled wire.

[0017] Preferably, the rubber plug is conical, and the end with the larger diameter of the rubber plug is arranged inside the first hollow tube.

[0018] By adopting the above scheme, the larger the width-to-width ratio of the baked flat polyurethane enameled wire, the closer the extrusion sleeve needs to be to the hose, the smaller the blocking space of the rubber plug for the air outlet hole, and the more hot air is blown out through the air outlet hole, that is, the less hot air is blown out through the air outlet nozzle. When the flow guide member rotates to the position where the air outlet nozzle is facing the narrow side of the flat polyurethane enameled wire, the air pressure generated by the hot air on the narrow side is smaller, avoiding the uneven thickness of the polyurethane paint coated on the narrow side due to the large air pressure, and thus ensuring the baking effect on the flat polyurethane enameled wire.

[0019] Preferably, the guiding assembly includes a first guiding roller, a second guiding roller, a U-shaped plate, a telescopic rod, a hinge rod and a slider. The first guiding roller and the second guiding roller are both arranged inside the baking furnace. The first guiding roller is arranged above the second guiding roller. The U-shaped plate is arranged inside the baking furnace. The second guiding roller is arranged inside the U-shaped plate. The telescopic rod is arranged at the bottom of the U-shaped plate and the lower end is connected to the baking furnace. The hinge rod is arranged at the bottom of the U-shaped plate. The rod wall of the rotating rod is provided with a second thread. The slider is threadedly sleeved with the rotating rod through the second thread. The lower end of the hinge rod is connected to the slider. The pitch of the second thread is greater than the pitch of the first thread.

[0020] It can be seen that when baking a flat polyurethane enameled wire with a large width-to-narrow ratio, it is necessary to increase the distance between the air outlet nozzle and the flat polyurethane enameled wire. On the one hand, it is necessary to avoid the air outlet nozzle colliding with the flat polyurethane enameled wire during the rotation following the flow guide member. On the other hand, it is necessary to avoid the hot air blowing causing too much wind pressure on the narrow side position. Moreover, the larger the width-to-narrow ratio, the longer the required baking time, which will cause the flat polyurethane enameled wire with a large width-to-narrow ratio to be affected by the wind pressure, resulting in uneven surface thickness and unable to be baked for enough time, thus affecting the production quality. Therefore, this solution is adopted. During the rotation of the rotating rod and the driving of the two extrusion sleeves to approach, the slider can move along the axis direction of the rotating rod at a speed greater than that of the second flange, and adjust the height position of the second guiding roller, thereby changing the moving length of the flat polyurethane enameled wire in the baking furnace, avoiding both the long baking time for the flat polyurethane enameled wire with a small width-to-narrow ratio and the short baking time for the flat polyurethane enameled wire with a large width-to-narrow ratio, effectively ensuring the baking effect, and further ensuring the quality of the baked flat polyurethane enameled wire.

[0021] Preferably, two groups of the first threads are provided, and the thread directions of the two groups of the first threads are arranged in opposite directions, and the thread direction of the second thread is the same as that of the first thread at the right end.

[0022] By adopting the above solution, during the rotation of the rotating rod, through the action of the two groups of the first threads, the two extrusion sleeves can move in opposite directions, and the slider can move in the same direction as the second flange on the right under the action of the second thread, so that when baking a flat polyurethane enameled wire with a large width-to-narrow ratio, the moving path of the flat polyurethane enameled wire in the baking furnace can be extended, that is, the baking time for the flat polyurethane enameled wire with a large width-to-narrow ratio can be extended, thereby ensuring the baking effect and further ensuring the quality of the enameled wire.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By providing the rotating rod, the extrusion sleeve and the second guiding roller, when baking a flat polyurethane enameled wire with a large width-to-narrow ratio, on the one hand, the rotation of the rotating rod can be used to drive the extrusion sleeve to approach the flow guide member, increasing the distance between the two flow guide members, avoiding the large wind pressure on the narrow side when the flow guide member drives the air outlet nozzle to rotate to face the narrow side position of the flat polyurethane enameled wire, thereby avoiding the uneven thickness of the polyurethane paint coated on the narrow side position; on the other hand, during the process of the extrusion sleeve approaching the flow guide member, the height of the second guiding roller can be lowered at a speed greater than the moving speed of the extrusion sleeve, extending the moving path of the enameled wire in the baking furnace, achieving the purpose of extending the baking time on the premise of reducing the wind pressure, and further ensuring the baking effect, effectively ensuring the quality of the baked flat polyurethane enameled wire.

[0025] 2. By means of the provided connecting rod and rubber plug, when squeezing the sleeve to drive the two flow guiding members to increase the distance from the flat polyurethane enameled wire, the rubber plug can be synchronously driven to move leftward, releasing the blocking effect of the rubber plug on the air outlet hole. Moreover, the larger the distance between the two flow guiding members and the flat polyurethane enameled wire, the smaller the blocking range of the rubber plug on the air outlet hole, and a part of the hot air entering the interior of the first hollow tube can flow out from the air outlet hole, further reducing the wind pressure exerted on the enameled wire when the flow guiding member drives the air outlet nozzle to rotate to face the narrow side position, that is, further ensuring the quality of the baked flat polyurethane enameled wire.

[0026] 3. By means of the two provided flow guiding members and the multiple air outlet nozzles on the two flow guiding members, the wind pressure of the hot air blown into the baking furnace can be gradually increased along the horizontal moving direction of the flat polyurethane enameled wire, avoiding the situation that the polyurethane paint on the surface of the flat polyurethane enameled wire that has not started to cure yet is affected by the wind pressure of the hot air and shows uneven thickness when it just enters the baking furnace, enabling the flat polyurethane enameled wire to have a gradual curing process after entering the baking furnace, and further ensuring the quality of the baked flat polyurethane enameled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a schematic cross-sectional structural diagram of the baking furnace of the present invention;

[0029] Figure 3 is a schematic connection structural diagram of the baking furnace, the flow guiding member and the adjusting assembly of the present invention;

[0030] Figure 4 is a schematic connection structural diagram of the flow guiding member, the first hollow tube, the second hollow tube and the extrusion sleeve of the present invention;

[0031] Figure 5 is a schematic cross-sectional connection structural diagram of the extrusion sleeve, the first hollow tube, the second hollow tube and the blocking assembly of the present invention;

[0032] Figure 6 is an exploded view of the first hollow tube, the second hollow tube and the extrusion sleeve of the present invention;

[0033] Figure 7 is a schematic cross-sectional connection structural diagram of the baking furnace and the guiding assembly of the present invention;

[0034] Figure 8 is a state diagram of the air outlet nozzle facing the narrow side position of the flat polyurethane enameled wire of the present invention.

[0035] In the figure: 1, baking furnace; 2, exhaust pipe; 3, diversion pipe; 4, diversion member; 41, air outlet nozzle; 42, first flange; 5, first motor; 6, rotating rod; 61, first thread; 62, second thread; 7, first hollow pipe; 71, fixing rod; 72, air outlet hole; 8, adjusting assembly; 81, second hollow pipe; 811, hose; 82, worm gear; 83, worm; 84, second motor; 85, ball; 86, extrusion sleeve; 861, strip-shaped opening; 862, second flange; 87, stop bar; 88, spring; 89, plugging assembly; 891, rubber plug; 892, connecting rod; 9, guiding assembly; 91, first guiding roller; 92, second guiding roller; 93, U-shaped plate; 94, telescopic rod; 95, hinged rod; 96, slider; 10, air guide port; 11, flat polyurethane enameled wire. Detailed implementation manner

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 to 8 , the present invention provides a polyurethane enameled wire production and forming processing device, and the technical solutions are as follows:

[0038] Specifically, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 8 , a polyurethane enameled wire production and forming processing device, including a baking furnace 1, an exhaust pipe 2 and a diversion pipe 3, further including a diversion member 4, a first motor 5, a rotating rod 6, a first hollow pipe 7, an adjusting assembly 8 and a guiding assembly 9. The diversion member 4 is arranged inside the baking furnace 1 and there are two of them. The diversion member 4 is hollow and is provided with an air outlet nozzle 41 on the side close to the center of the baking furnace 1. The side of the diversion member 4 close to the center of the baking furnace 1 is inclined. There are multiple air outlet nozzles 41, and the distance between each air outlet nozzle 41 and the center of the baking furnace 1 decreases from left to right. The caliber of the end of each air outlet nozzle 41 communicating with the outside of the diversion member 4 is equal, and the caliber of the end of the air outlet nozzle 41 communicating with the inside of the diversion member 4 increases from left to right.

[0039] Under the above set conditions, during the process that the flat polyurethane enameled wire 11 enters the baking furnace 1 from the left end and moves to the right, the distance between the flat polyurethane enameled wire 11 and the air outlets 41 on both sides gradually decreases. Since when the flat polyurethane enameled wire 11 just enters the baking furnace 1, the polyurethane paint coated on the surface of the flat polyurethane enameled wire 11 has not started to cure, the air outlet 41 at the leftmost end is the farthest from the flat polyurethane enameled wire 11 and the wind pressure of the hot air output when contacting the flat polyurethane enameled wire 11 is the smallest, while the air outlet 41 at the rightmost end is the closest to the flat polyurethane enameled wire 11 and the wind pressure of the hot air output when contacting the flat polyurethane enameled wire 11 is the largest. This can enable a gradually heating and curing process for the polyurethane paint coated on the surface of the flat polyurethane enameled wire 11, avoiding the situation of uneven thickness caused by wind pressure when the polyurethane paint has not started to cure, and effectively ensuring the quality of the flat polyurethane enameled wire 11 after baking.

[0040] As an implementation mode of the present invention, referring to Figure 2 、 Figure 3 、 Figure 4 and Figure 6 , the first motor 5 is arranged inside the baking furnace 1, the rotating rod 6 is arranged at the output end of the first motor 5, the surface of the first hollow tube 7 is provided with a fixing rod 71 and is fixedly arranged inside the baking furnace 1 through the fixing rod 71. The lower end of the flow guide tube 3 penetrates into the inside of the first hollow tube 7. The adjusting assembly 8 is arranged on the first hollow tube 7 and is connected to the two flow guide members 4. The adjusting assembly 8 includes a second hollow tube 81, a worm gear 82, a worm 83, a second motor 84, a ball 85, an extrusion sleeve 86, a stop rod 87, a spring 88 and a blocking assembly 89. The second hollow tube 81 is coaxially sleeved inside the first hollow tube 7 and one end is provided with a hose 811. The flow guide member 4 is connected to the second hollow tube 81 through the hose 811. The first hollow tube 7 is rotatably sleeved with the second hollow tube 81 through a sealing bearing at both ends, which can ensure the sealing effect when the first hollow tube 7 and the second hollow tube 81 are rotatably sleeved, and avoid the leakage of hot air from the connection between the first hollow tube 7 and the second hollow tube 81;

[0041] The worm gear 82 is sleeved on the second hollow tube 81. The second motor 84 is arranged outside the baking furnace 1. The worm 83 meshes with one side of the worm gear 82 and one end thereof penetrates through the baking furnace 1 and is connected to the output end of the second motor 84. Flanges 42 are arranged at both ends of the flow guide member 4. The balls 85 are embedded on the surface of the flange 42. The extrusion sleeve 86 is coaxially sleeved on the first hollow tube 7 and is in rolling contact with the balls 85. A strip-shaped opening 861 is formed in the side wall of the extrusion sleeve 86 and the outer diameter thereof is decreased from the end of the flow guide member 4 to the middle. The fixing rod 71 penetrates through the strip-shaped opening 861. A flange 862 is arranged at the bottom of the extrusion sleeve 86. A first thread 61 is arranged on the rod wall of the rotating rod 6. The flange 862 is threadedly sleeved with the rotating rod 6 through the first thread 61. The stop rod 87 penetrates through the flange 42 and is connected to the second hollow tube 81. The spring 88 is sleeved on the stop rod 87 and is connected to the flange 42 and the stop rod 87. The sum of the weights of the flow guide member 4 and the multiple air outlets 41 installed on the flow guide member 4 is less than or equal to the force generated by the deformation of the two springs 88. Air guide openings 10 are formed on the inner surface of the first hollow tube 7 and the outer surface of the second hollow tube 81.

[0042] Under the above set conditions, when the second motor 84 works, since the worm gear 82 is sleeved on the corresponding second hollow tube 81, the engagement connection between the worm gear 82 and the worm 83 can be utilized to drive the second hollow tube 81 to rotate. Since the flanges 42 at both ends of each flow guide member 4 are inserted into the stop rod 87, the two flow guide members 4 will drive the corresponding air outlets 41 to rotate around the flat polyurethane enameled wire 11 following the second hollow tube 81, and the friction force received by the flow guide member 4 during rotation is reduced through the balls 85. When baking the flat polyurethane enameled wire 11 with a large width-to-narrow ratio, the first motor 5 is started. The first motor 5 drives the rotating rod 6 to rotate. The rotating rod 6 drives the flange 862 to approach the flow guide member 4 under the action of the first thread 61. Since the flange 862 is integrally arranged with the extrusion sleeve 86, the surface of the extrusion sleeve 86 will drive the flange 42 to drive the flow guide member 4 away from the flat polyurethane enameled wire 11, avoiding the flow guide member 4 being blocked by the flat polyurethane enameled wire 11 during the process of driving the air outlet 41 to rotate. After the hot air enters the interior of the right-end first hollow tube 7 through the flow guide tube 3, it can enter the interior of the right-end second hollow tube 81 through the two air guide openings 10, and enter the interior of the corresponding flow guide member 4 under the guiding action of the right-end hose 811. Subsequently, after flowing in the flow guide member 4, it is blown onto the surface of the flat polyurethane enameled wire 11 to be dried through the air outlet 41. The hot air entering the interior of the left-end second hollow tube 81 through the left-end hose 811 can heat the second hollow tube 81 through heat conduction. At the position where the flat polyurethane enameled wire 11 just enters the baking furnace 1, it can be preliminarily heated through the heat dissipated by the heat conduction on the surface of the second hollow tube 81 in the state where the blown amount of the hot air is the least, so that the polyurethane paint coated on the surface of the flat polyurethane enameled wire 11 starts to cure before being directly blown by the hot air, effectively ensuring the baking effect of the flat polyurethane enameled wire 11.

[0043] As an embodiment of the present invention, referring to Figure 3 and Figure 5 , an air outlet hole 72 is formed at the right end of the hollow tube two 81 on the right side, and a plugging assembly 89 is arranged on the extrusion sleeve 86. The plugging assembly 89 includes a rubber plug 891 and a connecting rod 892. The rubber plug 891 penetrates through the air outlet hole 72, the connecting rod 892 is arranged outside the hollow tube two 81, and both ends are respectively connected to the rubber plug 891 and the extrusion sleeve 86. The rubber plug 891 is arranged in a conical shape, and the end with a larger diameter of the rubber plug 891 is arranged inside the hollow tube one 7.

[0044] Under the above settings, when baking the flat polyurethane enameled wire 11 with a large width-to-narrow ratio, since the extrusion sleeve 86 will move towards the position of the air guide member 4, and the lower end of the connecting rod 892 is arranged on the extrusion sleeve 86, the connecting rod 892 will move along with the extrusion sleeve 86. Furthermore, the rubber plug 891 at the upper end of the connecting rod 892 will gradually move away from the air outlet hole 72, that is, reduce the plugging range of the air outlet hole 72 by the rubber plug 891, so that part of the hot air entering the interior of the hollow tube two 81 through the guide pipe 3 can be blown out from the air outlet hole 72, and the hot air blown out from the air outlet nozzle 41 is reduced, that is, reduce the wind pressure generated on the flat polyurethane enameled wire 11 when the air outlet nozzle 41 rotates to face the narrow side position of the flat polyurethane enameled wire 11, avoiding the uneven thickness of the polyurethane paint coated on the narrow side position, and effectively ensuring the quality of the baked flat polyurethane enameled wire 11.

[0045] As an embodiment of the present invention, referring to Figure 2 and Figure 7 , the guiding assembly 9 is arranged inside the baking furnace 1 and is connected to the rotating rod 6. The guiding assembly 9 includes a guiding roller one 91, a guiding roller two 92, a U-shaped plate 93, a telescopic rod 94, a hinged rod 95 and a slider 96. Both the guiding roller one 91 and the guiding roller two 92 are arranged inside the baking furnace 1, the guiding roller one 91 is arranged above the guiding roller two 92, the U-shaped plate 93 is arranged inside the baking furnace 1, the guiding roller two 92 is arranged inside the U-shaped plate 93, the telescopic rod 94 is arranged at the bottom of the U-shaped plate 93 and the lower end is connected to the baking furnace 1, the hinged rod 95 is arranged at the bottom of the U-shaped plate 93, a second thread 62 is arranged on the rod wall of the rotating rod 6, the slider 96 is threadedly sleeved with the rotating rod 6 through the second thread 62, the lower end of the hinged rod 95 is connected to the slider 96, the pitch of the second thread 62 is greater than the pitch of the first thread 61, there are two groups of the first threads 61, and the thread directions of the two groups of the first threads 61 are arranged in opposite directions, and the thread direction of the second thread 62 is the same as that of the first thread 61 on the right end.

[0046] Under the above set conditions, when baking the flat polyurethane enameled wire 11 with a large width-to-narrow ratio, the rotation of the rotating rod 6 drives the extrusion sleeve 86 to approach the flow guide member 4. At this time, under the action of the second thread 62, the slider 96 can be driven to move leftward at a speed greater than that of the extrusion push block. Since the slider 96 is connected to the U-shaped plate 93 through the hinge rod 95, and the U-shaped plate 93 is connected to the baking furnace 1 under the action of the telescopic rod 94, the slider 96 can drive the U-shaped plate 93 to move downward through the hinge rod 95 during the leftward movement, thereby driving the second guide roller 92 to move downward, extending the moving path of the flat polyurethane enameled wire 11 in the baking furnace 1. When reducing the air pressure to avoid uneven thickness of the polyurethane paint, the baking effect can be ensured by extending the baking time, thereby ensuring the quality of the flat polyurethane enameled wire 11 after baking.

[0047] Working principle: In order to avoid the situation that the narrow side of the flat polyurethane enameled wire 11 with a large width-to-narrow ratio is affected by the air pressure of hot air after entering the baking furnace 1, resulting in uneven thickness of the coated polyurethane paint, referring to Figure 2 , Figure 3 , and Figure 7 , through the set adjustment component 8 and guide component 9, the distance between the two flow guide members 4 can be increased and the moving path of the flat polyurethane enameled wire 11 in the baking furnace 1 can be extended, reducing the air pressure on the narrow side position of the flat polyurethane enameled wire 11 while extending the baking time, effectively ensuring the baking effect; in order to avoid the situation that the paint layer on the surface of the flat polyurethane enameled wire 11 that has not started to cure is directly affected by the air pressure after entering the baking furnace 1, referring to Figure 3 , Figure 4 , and Figure 6 , through the set hose 811, the hose 811 can be heated after the hot air enters the interior of the second hollow tube 81 at the left end through the hose 811, and the flat polyurethane enameled wire 11 can be preheated through the heat conduction effect of the second hollow tube 81, so that the flat polyurethane enameled wire 11 starts to cure before being directly blown by the hot air blown from the leftmost end, effectively avoiding the situation of uneven thickness of the polyurethane paint; in order to further avoid the situation that the flat polyurethane enameled wire 11 is directly affected by a large air pressure after entering the baking furnace 1, resulting in uneven thickness of the paint layer on the surface, referring to Figure 4 , through the set flow guide member 4 and the multiple air outlets 41 on the flow guide member 4, the air pressure caused by the hot air blown onto the surface of the flat polyurethane enameled wire 11 can gradually increase from left to right, achieving a gradually curing effect on the flat polyurethane enameled wire 11.

[0048] Specifically:

[0049] Thread the flat polyurethane enameled wire 11 to be baked through the baking furnace 1 and wind it up at the right end. Deliver the external hot air to the inside of the hollow tube 7 at the right end through the diversion pipe 3. Under the action of the air guide port 10 and the diversion pipe 3, the hot air can flow into the inside of the diversion member 4 and the hollow tube 81 at the left end. And as the hot air is continuously delivered, the hot air inside the diversion member 4 can be blown out from the air outlet nozzle 41 to the surface of the flat polyurethane enameled wire 11 to be baked;

[0050] When baking the flat polyurethane enameled wire 11 with a large width-to-narrow ratio, start the first motor 5. The output end of the first motor 5 drives the rotating rod 6 to rotate. On the one hand, since the two threads 61 on the rotating rod 6 are arranged in opposite directions, the two extrusion sleeves 86 approach each other under the action of the corresponding flange 862 and the thread 61. And the outer diameter of the extrusion sleeve 86 decreases from the end of the diversion member 4 to the middle. During the process of the two extrusion sleeves 86 approaching each other, they can respectively squeeze the balls 85 on the surface of the corresponding flange 42 through their outer surfaces, increasing the distance between the two diversion members 4, that is, increasing the distance between each air outlet nozzle 41 installed on the diversion member 4 and the flat polyurethane enameled wire 11 to be baked. That is, when the air outlet nozzle 41 moves to the position facing the narrow side of the flat polyurethane enameled wire 11, the distance from the narrow side position increases, avoiding the uneven thickness of the polyurethane paint caused by excessive air pressure of the hot air blown out from the air outlet nozzle 41. On the other hand, since the pitch of the thread 62 provided on the rotating rod 6 is greater than the pitch of the thread 61, and the thread direction of the thread 62 is the same as that of the thread 61 at the right end, during the rotation of the rotating rod 6, the slider 96 can move to the left at a speed greater than the moving speed of the flange 862. During the movement of the slider 96, through the hinge of the hinge rod 95 and the limit of the two telescopic rods 94, it can drive the U-shaped plate 93 to drive the second guide roller 92 to move downward, increasing the distance between the second guide roller 92 and the first guide roller 91, that is, increasing the length required for the flat polyurethane enameled wire to pass through the first guide roller 91 and the second guide roller 92, thereby extending the moving path of the flat polyurethane enameled wire 11 in the baking furnace 1, that is, extending the baking time of the flat polyurethane enameled wire 11, so as to ensure the baking effect, that is, ensuring the quality of the baked flat polyurethane enameled wire 11;

[0051] During the process of the extrusion sleeve 86 approaching the flow guide 4, the rubber plug 891 moves synchronously with the corresponding extrusion sleeve 86 under the action of the connecting rod 892, gradually reducing the blocking range of the air outlet hole 72, so that part of the hot air is discharged from the inside of the second hollow tube 81 through the air outlet hole 72. That is, the larger the width-to-width ratio of the flat polyurethane enameled wire 11, the more hot air is discharged from the inside of the second hollow tube 81 through the air outlet hole 72, the less hot air is blown out through the air outlet nozzle 41 per unit time, and the smaller the wind pressure generated by the hot air blown onto the surface of the flat polyurethane enameled wire 11. Since the distance between the air outlet nozzle 41 and the center of the baking furnace 1 is set to decrease from left to right, and the diameter of the end of each air outlet nozzle 41 communicating with the inside of the flow guide 4 is set to increase from left to right, the wind pressure of the hot air blown onto the surface of the flat polyurethane enameled wire 11 gradually increases from left to right, realizing the gradual curing of the flat polyurethane enameled wire 11, and avoiding the situation that the polyurethane paint on the surface of the flat polyurethane enameled wire 11 just entering the baking furnace 1 is affected by the wind pressure of the hot air and shows uneven thickness before starting to cure, further ensuring the quality of the flat polyurethane enameled wire 11 after baking.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane enameled wire production and molding processing equipment, comprising a baking furnace (1), an exhaust pipe (2) and a guide pipe (3), characterized in that: The invention also comprises a flow guide (4), a motor (5), a rotating rod (6), a hollow tube (7), an adjusting assembly (8) and a guiding assembly (9), wherein the flow guide (4) is arranged inside the baking oven (1) and two of them are arranged, the flow guide (4) is arranged hollow and an air outlet (41) is arranged on one side close to the center of the baking oven (1), the motor (5) is arranged inside the baking oven (1), the rotating rod (6) is arranged at the output end of the motor (5), a fixing rod (71) is arranged on the surface of the hollow tube (7) and is fixed to the baking oven (1) by the fixing rod (71). The interior of the baking furnace (1), the lower end of the guide tube (3) passes through the interior of the hollow tube (7), the adjustment component (8) is arranged on the hollow tube (7) and is connected to the two guide members (4), when the rotating rod (6) rotates forward or reversely, the adjustment component (8) drives the two guide members (4) to move closer or farther away respectively, the guide component (9) is arranged inside the baking furnace (1) and is connected to the rotating rod (6), when the two guide members (4) move closer or farther away, the guide component (9) respectively reduces or increases the moving path of the flat polyurethane enameled wire (11) in the baking furnace (1).

2. The polyurethane enameled wire production molding processing equipment according to claim 1, characterized in that: The regulating assembly (8) comprises a second hollow tube (81), a worm wheel (82), a worm (83), a second motor (84), a ball (85), an extrusion sleeve (86), a stopper rod (87), a spring (88) and a blocking assembly (89). The second hollow tube (81) is coaxially sleeved inside the first hollow tube (7) and is provided with a hose (811) at one end. The flow guide (4) is connected to the second hollow tube (81) through the hose (811). Both ends of the flow guide (4) are provided with a flange (42). The ball (85) is embedded in the surface of the flange (42). The extrusion sleeve (86) is coaxially sleeved outside the first hollow tube (7) and is in rolling contact with the ball (85). The side wall of the extrusion sleeve (86) is provided with a strip-shaped opening (861) and the outer diameter is gradually reduced from the end of the flow guide (4) to the middle. The fixing rod (71) passes through the strip. The extrusion sleeve (86) is provided with a second flange (862) at the bottom, the rod wall of the rotating rod (6) is provided with a first thread (61), the second flange (862) is threadedly sleeved with the rotating rod (6) through the first thread (61), the stop rod (87) passes through the first flange (42) and is connected to the second hollow tube (81), the spring (88) is sleeved on the stop rod (87) and is connected to the first flange (42). ) and a stop rod (87), the inner surface of the hollow tube one (7) and the outer surface of the hollow tube two (81) are both provided with air guide ports (10), the right end of the hollow tube two (81) on the right side is provided with an air outlet (72), the blocking component (89) is arranged on the extrusion sleeve (86), and when the extrusion sleeve (86) moves left or right, the blocking component (89) respectively reduces or increases the blocking range of the air outlet (72).

3. The polyurethane enameled wire production molding processing equipment according to claim 2, characterized in that: The guide member (4) is arranged obliquely on one side close to the center of the baking oven (1), a plurality of air outlet nozzles (41) are arranged, and the distance between the air outlet nozzles (41) and the center of the baking oven (1) decreases from left to right.

4. The polyurethane enameled wire production molding processing equipment according to claim 3 is characterized by: The diameter of a port of each air outlet nozzle (41) communicating with the outside of the flow guide member (4) is set to be equal, and the diameter of a port of each air outlet nozzle (41) communicating with the inside of the flow guide member (4) is set to increase from left to right.

5. The polyurethane enameled wire production molding processing equipment according to claim 2, characterized in that: The blocking assembly (89) comprises a rubber plug (891) and a connecting rod (892); the rubber plug (891) is arranged to pass through the air outlet hole (72); the connecting rod (892) is arranged outside the second hollow tube (81), and its two ends are respectively connected to the rubber plug (891) and the extrusion sleeve (86).

6. The polyurethane enameled wire production molding processing equipment according to claim 5, characterized in that: The rubber plug (891) is arranged in a conical shape, and the end of the rubber plug (891) with a larger diameter is arranged inside the hollow tube (7).

7. The polyurethane enameled wire production and molding processing equipment according to claim 2, characterized in that: The guide assembly (9) comprises a guide roller 1 (91), a guide roller 2 (92), a U-shaped plate (93), a telescopic rod (94), a hinge rod (95) and a slider (96); the guide roller 1 (91) and the guide roller 2 (92) are both arranged inside the baking oven (1); the guide roller 1 (91) is arranged above the guide roller 2 (92); the U-shaped plate (93) is arranged inside the baking oven (1); and the guide roller 2 (92) is arranged on the U-shaped plate (93). The telescopic rod (94) is arranged at the bottom of the U-shaped plate (93) and the lower end is connected to the baking oven (1). The hinged rod (95) is arranged at the bottom of the U-shaped plate (93). The rod wall of the rotating rod (6) is provided with a second thread (62). The sliding block (96) is threadedly connected to the rotating rod (6) through the second thread (62). The lower end of the hinged rod (95) is connected to the sliding block (96). The pitch of the second thread (62) is greater than the pitch of the first thread (61).

8. The polyurethane enameled wire production and molding processing equipment according to claim 7, characterized in that: The thread one (61) is provided with two groups, and the thread directions of the two groups of the thread one (61) are arranged in opposite directions, and the thread two (62) is arranged in the same direction as the thread one (61) at the right end.

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