Composite insulator core rod pre-baking device

Abstract

The application discloses a composite insulator core rod pre-baking device, and relates to the technical field of composite insulator core rods.The composite insulator core rod pre-baking device comprises a pre-baking oven main body and a door curtain assembly.The door curtain assembly comprises an arc-shaped groove and a liftable baffle.A sliding block is welded to the outer wall side edge of the liftable baffle.The sliding block is embedded into a guide rail groove.The liftable baffle is slidably connected to the inlet and outlet edges of the pre-baking oven main body through the guide rail.The piston rod end of a pneumatic cylinder is rigidly connected to the top end of the liftable baffle through a connecting plate.The liftable baffle is driven by the pneumatic cylinder and is provided with the arc-shaped groove, so that the pre-baking device can be quickly opened and closed, the problem of poor sealing and heat loss caused by the mismatching of the shape of the baffle is solved, the heat preservation performance of the pre-baking oven is improved, and the positioning accuracy and operation convenience of the core rod placement are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite insulator core rod, in particular to a composite insulator core rod pre-drying device. BACKGROUND

[0002] The composite insulator core rod is a core component of the composite insulator, usually made of glass fiber reinforced resin-based composite material, and the core rod may absorb moisture during storage or production, and needs to be preheated to avoid bubbles or reduce material strength during subsequent curing, and can also activate the adhesive activity and enhance the interfacial adhesion.

[0003] However, the hot air circulating oven is difficult to achieve temperature uniformity in the axial and radial directions of the core rod, resulting in stress or inconsistent curing degree in the material due to temperature difference, directly affecting the mechanical performance stability of the insulator, and most production lines still use manual feeding and discharging or offline preheating mode, which restricts the improvement of production efficiency.

[0004] Therefore, it is necessary to provide a composite insulator core rod pre-drying device to solve the problems in the background.

[0005] Patent CN104036890B discloses a composite insulator heating and injection integrated system, which realizes direct injection of the core rod after preheating, maximally reduces heat loss, and improves the adhesion between the core rod and the umbrella skirt.

[0006] The above-mentioned patent, through the design of direct injection after preheating of the core rod, effectively reduces the heat loss and significantly improves the adhesion between the core rod and the umbrella skirt. At the same time, with the continuous upgrading of the industry's demand for production refinement and automation, there is still room for technical improvement in the optimization of equipment structure, deepening of heat preservation performance, and precision of automatic control in the pre-drying link.

[0007] Therefore, the present application provides a composite insulator core rod pre-drying device capable of realizing the lifting of the baffle with an arc-shaped groove driven by a cylinder, linkage of the controller, upper cover and hinge structure, and enhancing the sealing property and positioning precision of the core rod while quickly opening and closing the device. SUMMARY

[0008] The present application aims to provide a composite insulator core rod pre-drying device to solve the technical problems of the hot air circulating oven being difficult to achieve temperature uniformity in the axial and radial directions of the core rod, resulting in stress or inconsistent curing degree in the material due to temperature difference, directly affecting the mechanical performance stability of the insulator, and most production lines still using manual feeding and discharging or offline preheating mode, which restricts the improvement of production efficiency.

[0009] In order to achieve the above object, the present application provides the following technical scheme: a composite insulator core rod pre-baking device, comprising a pre-baking oven main body and a door curtain assembly, the pre-baking oven main body is provided with a door curtain assembly on both sides of the outer wall, and the two ends of the guide rail are vertically fixed and installed at the edge of the inlet and outlet of the pre-baking oven main body through bolts;

[0010] The door curtain assembly comprises an arc-shaped groove and a liftable baffle, the bottom of the liftable baffle is provided with an arc-shaped groove, the outer wall side edge of the liftable baffle is welded with a sliding block, the sliding block is embedded in the guide rail groove, the liftable baffle is slidably connected to the inlet and outlet edges of the pre-baking oven main body through the guide rail, and the top end of the liftable baffle is rigidly connected to the piston rod end of the air cylinder through a connecting plate.

[0011] Preferably, the pre-baking oven main body is internally provided with a heating cavity, the bottom of the heating cavity is provided with a metal support, the outer wall top end of the metal support is provided with parallel distributed heating pipes, the top of the heating pipe is provided with a perforated metal plate, and the perforated metal plate is welded to the inner wall of the pre-baking oven main body on both sides;

[0012] The perforated metal plate and the bottom of the heating cavity form an air duct, and the air duct communicates with the outside of the pre-baking oven main body.

[0013] Preferably, the pre-baking oven main body is externally provided with an upper cover, the outer wall of the upper cover is symmetrically provided with grating sensors at the edges on both sides, and the pre-baking oven main body is externally provided with a controller at the front end of the outer wall;

[0014] The upper cover is rotatably connected to the pre-baking oven main body through a hinge, the grating sensors are electrically connected to the controller through data lines, and the fixed end of the hinge is welded to the top edge of the pre-baking oven main body.

[0015] Preferably, the arc-shaped groove of the door curtain assembly is a semicircular groove, the curvature of the arc-shaped groove is matched with the outer diameter of the composite insulator core rod, the outer wall bottom end of the liftable baffle is fixedly provided with a sealing strip, and the sealing strip is in contact with the bottom end of the inner wall of the pre-baking oven main body to form a closed space;

[0016] The outer wall side of the liftable baffle is provided with a sliding rail groove, the sliding rail groove is provided with a ball bearing in a matched mode, the cross section of the sliding rail groove is a T-shaped structure, and the ball bearing is embedded in the inner wall of the guide rail of the door curtain assembly.

[0017] Preferably, the pre-baking oven main body is externally provided with an air cylinder jacking mechanism on one side of the outer wall, the air cylinder jacking mechanism comprises a base, a vertical air cylinder and a tray, the top end of the base is provided with a horizontal adjusting bolt, the end of the horizontal adjusting bolt is provided with a rubber pad, and the rubber pad is in contact with the ground to form an antiskid support;

[0018] The outer wall of the base is fixedly installed on the outer wall side of the pre-baking oven main body, a vertical cylinder is fixedly installed on the top end of the outer wall of the base through bolts, the piston rod of the vertical cylinder extends upward in the vertical direction, an installation plate is arranged at the end of the piston rod, and the tray is fixedly installed on the top end of the piston rod through the installation plate; the tray is in the shape of a circular plate, and the central axis of the tray is on the same vertical axis as the axis of the arc-shaped slot of the curtain assembly.

[0019] Preferably, the outer surface of the tray is provided with anti-skid lines, and positioning lugs are fixedly installed on the periphery of the outer wall of the tray; the positioning lugs are connected to the end of the composite insulator core rod through clamping.

[0020] Preferably, casters are movably installed at the four corners of the bottom of the outer wall of the pre-baking oven main body, the casters are detachably connected to the bottom plate of the pre-baking oven main body through bolts, the wheel body of the caster is in the structure of a universal wheel, the inner wall of the pre-baking oven main body is coated with a high-temperature-resistant reflective coating, and the reflective coating covers the area directly opposite the heating pipe.

[0021] Preferably, the surface of the perforated metal plate is uniformly provided with flow guide holes, the diameter of the flow guide holes gradually increases along the airflow direction of the air duct, and the axis of the flow guide hole and the extension direction of the heating pipe form an angle of 45 degrees.

[0022] Preferably, the controller is fixedly installed on the right side of the outer wall of the pre-baking oven main body through a metal support, the display screen and the operation button of the controller are embeddedly installed on the same panel, and a heat insulation layer is arranged between the panel and the outer wall of the pre-baking oven main body.

[0023] Preferably, the two ends of the heating pipe are connected to the metal support through a clamp, and the bottom of the metal support is welded with a heat sink extending to the outside of the inner wall bottom plate of the pre-baking oven main body.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] 1. The present application drives the liftable baffle through a cylinder, and the liftable baffle is provided with an arc-shaped slot, so that the pre-baking device can be quickly opened and closed, the problem of poor sealing and heat loss caused by the mismatching shape of the baffle is solved, the heat preservation performance of the pre-baking oven is improved, and the positioning accuracy and operation convenience of the core rod placement are improved.

[0026] 2. The present application links the upper cover through a controller, and the upper cover is hingedly connected to the box body, so that the operation area can be automatically monitored and the upper cover can be automatically opened at a fixed time, the problem of mechanical misoperation risk of the equipment is solved, the personnel injury caused by accidental closing or opening of the upper cover is effectively prevented, the operation risk is reduced, and the temperature fluctuation caused by human intervention is avoided.

[0027] 3. The present application adjusts the height of the tray through the vertical air cylinder, realizes the mechanical positioning of the core rod position, solves the problems of poor sealing or uneven heating, improves the core rod installation efficiency and position accuracy, and reduces the manual adjustment time;

[0028] 4. The present application sets up the tapered flow guide hole on the surface of the perforated metal plate, realizes the temperature uniformity in the box, solves the problem of local overheating or uneven temperature, improves the core rod preheating quality, and reduces the risk of material performance degradation caused by uneven heating. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a front view structure schematic diagram of the present application;

[0030] Figure 2 It is a cross-sectional structure schematic diagram of the present application;

[0031] Figure 3 It is a door curtain assembly structure schematic diagram of the present application;

[0032] Figure 4 It is a liftable baffle structure schematic diagram of the present application;

[0033] Figure 5 It is an arc-shaped groove structure schematic diagram of the present application;

[0034] Figure 6 It is a cylinder jacking mechanism structure schematic diagram of the present application;

[0035] Figure 7 It is a heating cavity structure schematic diagram of the present application;

[0036] Figure 8 It is a heating pipe structure schematic diagram of the present application.

[0037] In the figure: 1, pre-baking oven main body; 2, sliding rail groove; 3, heating pipe; 4, perforated metal plate; 5, air duct; 6, door curtain assembly; 7, air cylinder; 8, upper cover; 9, grating sensor; 10, controller; 11, composite insulator core rod; 12, cylinder jacking mechanism; 13, caster; 14, reflective coating; 15, arc-shaped groove; 16, liftable baffle; 17, guide rail; 18, sealing strip; 19, base; 20, vertical air cylinder; 21, tray; 22, positioning lug; 23, metal support; 24, clamp; 25, heat sink. DETAILED DESCRIPTION

[0038] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 And 8 , the present application provides an embodiment: a composite insulator core rod pre-baking device, comprising a pre-baking oven body 1 and a door curtain assembly 6, the pre-baking oven body 1 is provided with door curtain assembly 6 on both sides of the outer wall, the pre-baking oven body 1 is vertically fixed at the edge of the inlet and outlet through the bolt The two ends of the guide rail 17 are installed; the door curtain assembly 6 comprises an arc-shaped groove 15 and a liftable baffle 16, the bottom of the liftable baffle 16 is provided with an arc-shaped groove 15, the outer wall side edge of the liftable baffle 16 is welded with a sliding block, the sliding block is embedded in the groove of the guide rail 17, the liftable baffle 16 is slidably connected to the inlet and outlet edge of the pre-baking oven body 1 through the guide rail 17, and the top end of the liftable baffle 16 is rigidly connected with the piston rod end of the air cylinder 7 through the connecting plate;

[0042] The two ends of the heating pipe 3 are connected with the metal support 23 through the clamp 24, and the bottom of the metal support 23 is welded with the fin 25, and the fin 25 extends to the outer side of the inner wall bottom plate of the pre-baking oven body 1;

[0043] Further, first, the liftable baffle 16 forms a sliding pair with the T-shaped groove of the guide rail 17 through the T-shaped sliding block welded to the side edge, and the piston rod of the air cylinder 7 rigidly pulls the liftable baffle 16 to vertically move; when the liftable baffle 16 is lowered to the closed position, the bottom sealing strip 18 is pressed against the threshold of the pre-baking oven door to form an elastic sealing interface; the sealing strip 18 is made of high-temperature-resistant silicone material, and the cross section of the sealing strip 18 is in a hollow corrugated structure to enhance the deformation compensation capacity; when the baffle is raised, the arc-shaped groove 15 forms a matching gap with the outer diameter of the mandrel to reduce heat leakage; the guide rail 17 is vertically fixed along the edge of the inlet and outlet of the pre-baking oven body 1, the pre-baking oven body 1 is provided with the casters 13 at the bottom, the universal wheel structure of the casters 13 can be flexibly rotated, the inspection cover 8 is connected to the pre-baking oven body 1 through a hinge, the inspection cover 8 is opened and closed, the controller 10 is electrically connected to the grating sensor 9, and the base 19 horizontal adjustment bolt and the rubber pad of the air cylinder jacking mechanism 12;

[0044] Then, the composite insulator mandrel 11 is placed on the tray 21 of the air cylinder jacking mechanism 12, since the outer surface of the tray 21 has anti-skid lines, and the positioning protrusions 22 at the four peripheral edges are connected to the ends of the composite insulator mandrel 11 through clamping, the placement of the mandrel can be ensured to be stable. The controller 10 is started, and the pre-baking parameters such as temperature and time are set through the operation button. Then, the heating pipe 3 on the metal support 23 at the bottom of the heating cavity generates heat, the external air enters the air duct 5, is heated after passing through the heating pipe 3, and then the hot air enters the inside of the pre-baking oven body 1 through the flow guide holes in the perforated metal plate 4 to pre-bake the composite insulator mandrel 11. Since the diameters of the flow guide holes gradually increase along the airflow direction of the air duct 5, and the axis forms a 45° angle with the extension direction of the heating pipe 3, the hot air is more uniformly distributed in the pre-baking oven body 1. At the same time, the piston rod of the air cylinder 7 drives the liftable baffle 16 to descend along the guide rail 17, and the sealing strip 18 at the bottom end of the liftable baffle 16 is in contact with the bottom end of the inner wall of the pre-baking oven body 1 to form a closed space, so that the heat loss is reduced. When a person or object approaches the inlet and outlet of the pre-baking oven body 1, the grating sensor 9 senses and transmits a signal to the controller 10, and the controller 10 suspends heating or alarms;

[0045] Finally, the controller 10 sends a prompt signal that the pre-baking is completed, the piston rod of the air cylinder 7 drives the liftable baffle 16 to rise, the inlet and outlet are opened, the piston rod of the vertical air cylinder 20 of the air cylinder jacking mechanism 12 rises to eject the composite insulator mandrel 11, and the equipment is closed. The liftable baffle 16 is provided with three types, the first type is provided with two arc-shaped grooves 15 with a length of 160 mm and a center point distance of 300 mm, the second type is provided with two arc-shaped grooves 15 with a length of 80 mm and a center point distance of 300 mm, and the third type is provided with one arc-shaped groove 15 with a length of 370 mm.

[0046] Please refer to Figure 1 , Figure 3 ,Figure 5 、 Figure 6 and Figure 7 An embodiment of the present application provides a composite insulator core rod pre-baking device, a gas cylinder jacking mechanism 12 is fixedly installed on one side of the outer wall of the pre-baking oven body 1, the gas cylinder jacking mechanism 12 comprises a base 19, a vertical cylinder 20 and a tray 21, a horizontal adjusting bolt is arranged at the top end of the base 19, a rubber pad is arranged at the end of the horizontal adjusting bolt, and the rubber pad is in contact with the ground to form an anti-skid support; the base 19 is fixedly installed on the outer wall side of the pre-baking oven body 1, the vertical cylinder 20 is fixedly installed on the top end of the outer wall of the base 19 in a vertical manner through bolts, the piston rod of the vertical cylinder 20 extends upward in a vertical direction, an installation plate is arranged at the end of the piston rod, and the tray 21 is fixedly installed on the top end of the piston rod through the installation plate; the tray 21 is in the shape of a circular plate, and the central axis of the tray 21 is on the same vertical axis as the axis of the arc-shaped groove 15 of the door curtain assembly 6;

[0047] An anti-skid line is arranged on the outer surface of the tray 21, positioning lugs 22 are fixedly installed around the outer wall of the tray 21, and the positioning lugs 22 are connected to the ends of the composite insulator core rods 11 in a clamping manner;

[0048] Further, first, the universal wheels of the casters 13 allow omnidirectional movement, and are fixed after being positioned; the alignment state of the door curtain assembly 6 and the tray 21 of the gas cylinder jacking mechanism 12 is checked: the liftable baffle 16 is driven to vertically ascend along the guide rail 17 by the cylinder 7, at this time, the T-shaped slide rail groove 2 in the guide rail 17 is matched with the ball bearing to be smooth; the levelness of the base 19 of the gas cylinder jacking mechanism 12 is detected by using a level, the horizontal adjusting bolt at the top end of the base 19 is rotated to make the rubber pad closely contact with the ground until the bubbles are centered, thereby forming an anti-skid support, at this time, the axis of the arc-shaped groove 15 of the door curtain assembly 6 and the central axis of the tray 21 are on the same vertical plane, and the semicircular profile of the arc-shaped groove 15 is matched with the annular groove arranged at the end of the composite insulator core rod 11;

[0049] Then the mandrel is clamped, the annular groove at the end of the composite insulator mandrel 11 is aligned with the positioning protrusion 22 at the edge of the tray 21, and the positioning protrusion 22 is fixed by interference fit. The anti-skid lines on the surface of the tray 21 increase the friction to prevent the mandrel from sliding. The vertical cylinder 20 is started by the controller 10, the piston rod of the vertical cylinder 20 drives the tray 21 to rise in the vertical direction, the mandrel passes through the arc-shaped slot 15 of the curtain assembly 6 and enters the inside of the pre-baking oven main body 1. In this process, the grating sensor 9 monitors the position of the top end of the mandrel in real time. When it is detected that the mandrel has completely entered the heating cavity, the grating sensor 9 has a photoelectric conversion circuit inside. The converted electrical signal is transmitted to the controller 10 through the cable. After receiving the signal, the controller 10 outputs a control signal according to the program logic to make the solenoid of the electromagnetic valve energized, thereby changing the position of the valve core of the electromagnetic valve to allow compressed air to enter the cylinder 7, thereby triggering the cylinder 7 to act. The cylinder 7 generates linear motion through the extension and retraction of the piston rod, thereby driving the liftable baffle 16 to move downward along the guide rail 17, and the sealing strip 18 is pressed against the bottom of the pre-baking oven main body 1 to form a closed space. At this time, the ball bearings in the sliding rail groove 2 are in rolling contact with the inner wall of the guide rail 17, so that the baffle lifting process has low resistance and no jamming;

[0050] Then, the heating pipe 3 is powered to generate heat, and the heat sink 25 at the bottom of the metal support 23 transfers excess heat out of the box. The hot air passes through the flow guide holes of the perforated metal plate 4 to form a directional air flow. The diameter of the flow guide holes gradually increases along the air flow direction of the air duct 5, and the hole axis is designed at a 45° angle with the heating pipe 3, so that the hot air forms a spiral upward air flow, uniformly wrapping the surface of the mandrel. The high-temperature reflective coating 14 reflects the heat radiated by the heating pipe 3 to the mandrel, improving the heat efficiency.

[0051] Finally, after the pre-baking is completed, the controller 10 outputs a current signal to the electromagnetic valve, and the switching of the working position of the electromagnetic valve changes the flow direction of the compressed air, so that the compressed air enters the rodless cavity of the vertical cylinder 20, i.e. the side where the piston rod extends, and the gas in the cavity with the rod, i.e. the side where the piston rod is located, is discharged, thereby retracting the piston rod of the vertical cylinder 20. A limit switch is installed at the initial position of the vertical cylinder 20. The piston rod of the vertical cylinder 20 is connected to the mandrel through a shaft coupling, thereby driving the mandrel to descend to the initial position. Two connecting rods are respectively connected to the end of the piston rod of the vertical cylinder 20 and the two sides of the liftable baffle 16. The connecting rods drive the liftable baffle 16 to move upward synchronously to open the channel, and then lubricating oil is applied to the surface of the positioning protrusion 22 to release the clamping and take out the mandrel.

[0052] Please refer to Figure 1 and Figure 8The application provides a composite insulator core rod pre-baking device, and the pre-baking box body 1 is fixedly installed with an upper cover 8 at the top end of the outer wall, the outer wall of the upper cover 8 is symmetrically installed with grating sensors 9 at the two side edges, and the pre-baking box body 1 is fixedly installed with a controller 10 at the front end of the outer wall; the upper cover 8 is rotationally connected to the pre-baking box body 1 through a hinge, the grating sensors 9 are electrically connected to the controller 10 through data lines, and the fixed end of the hinge is welded at the top edge of the pre-baking box body 1.

[0053] The controller 10 is fixedly installed on the outer wall right side of the pre-baking box body 1 through a metal support 23, the display screen and the operation button of the controller 10 are embeddedly installed on the same panel, and a heat insulation layer is arranged between the panel and the outer wall of the pre-baking box body 1.

[0054] Further, first, an electromagnetic lock is fixedly installed at the closed upper cover 8: the electromagnetic lock lock body is embedded in the inner side edge of the upper cover 8, a magnetic adsorption plate is arranged at the top of the pre-baking box body 1, the electromagnetic lock is connected to the relay of the controller 10 through an independent line, the controller 10 is controlled by the program to control power on / off, and the controller 10 is internally embedded with a three-stage linkage protection logic program: all the heating pipes 3 are stopped to supply heat, the lifting action of the air cylinder 7 is paused, and the electromagnetic lock is kept powered on to ensure that the upper cover 8 is kept closed.

[0055] Then, the pre-baking parameters are set on the touch screen of the controller 10, after starting, the heating pipes 3 are powered on to generate heat, the heat forms 45° inclined air flow through the flow guide holes of the perforated metal plate 4, the hot air circulation is cooperated with the air duct 5, the radiation heat is concentrated and reflected to the core rod area by the high-temperature resistant reflective coating 14, and the heat radiating fins 25 at the bottom of the metal support 23 synchronously radiate heat. The composite insulator core rod 11 is fixedly connected by clamping the positioning protrusions 22 of the tray 21, the vertical air cylinder 20 drives the piston to make linear motion by means of the pressure of compressed air, so that the height of the core rod is adjusted, the core rod axis is aligned with the arc-shaped groove 15 of the door curtain assembly 6, when a person or an object approaches the entrance and exit, the grating sensor 9 senses and transmits a signal to the controller 10, the controller 10 executes the three-stage linkage protection logic program, keeps the electromagnetic lock powered on, and the upper cover 8 is in the locked state; when the pre-baking time arrives and the grating sensor 9 is not blocked, the controller 10 is powered off.

[0056] Finally, the rotary motion of the motor is converted into mechanical energy of the chain transmission of the upper cover 8, the upper cover 8 is opened, the liftable baffle 16 is driven by the air cylinder 7 to rise along the guide rail 17, the ball bearings in the T-shaped sliding rail groove 2 ensure stable lifting, the tray 21 is lowered to the limited point after the control signal is sent by the electromagnetic valve of the vertical air cylinder 20, the lubricating oil is smeared on the surface of the positioning protrusions 22 to release the clamping and take out the core rod after pre-baking.

[0057] Please refer to Figure 1 , Figure 3 and Figure 6The application provides a composite insulator core rod pre-baking device, and the pre-baking box body 1 is internally provided with a heating cavity, the bottom of the heating cavity is provided with a metal support 23, the outer wall top end of the metal support 23 is provided with parallel distributed heating pipes 3, the top of the heating pipe 3 is provided with a perforated metal plate 4, and the perforated metal plate 4 is welded to the two sides of the inner wall of the pre-baking box body 1; an air duct 5 is formed between the perforated metal plate 4 and the bottom of the heating cavity, and the air duct 5 is communicated with the outside of the pre-baking box body 1.

[0058] The surface of the perforated metal plate 4 is uniformly distributed with flow guide holes, the diameter of the flow guide holes gradually increases along the airflow direction of the air duct 5, and the axis of the flow guide holes is at an angle of 45° with the extension direction of the heating pipe 3.

[0059] Further, first, the horizontal adjusting bolt is rotated to make the rubber pad of the base 19 contact the ground, and then the controller 10 is started to set the pre-baking temperature parameter.

[0060] Then the vertical air cylinder 20 drives the tray 21 to rise to the coaxial height of the arc-shaped groove 15, the core rod end is embedded into the clamping groove of the positioning protrusion 22, the anti-skid lines prevent displacement, the other end of the core rod passes through the arc-shaped groove 15 of the two side curtain assemblies 6, and a horizontal suspension state is formed, the controller 10 triggers the air cylinder 7 to act, the piston rod drives the liftable baffle 16 to move downwards along the guide rail 17 through the connecting plate, the ball bearing in the T-shaped sliding rail groove 2 reduces the friction resistance, and the sealing strip 18 at the bottom of the baffle is compressed with the bottom of the pre-baking box to form a sealed cavity.

[0061] Finally, the heating pipe 3 is powered to generate heat, the heat is transmitted to the surrounding through the metal support 23, external air enters the inside of the pre-baking box body 1 from the air duct 5, since the air duct 5 is communicated with the outside of the pre-baking box body 1, the tail end of the air duct 5 can also be connected with a centrifugal fan for forced air circulation, the air is heated into hot air in the process of entering through the heating pipe 3, the hot air enters the pre-baking box body 1 through the flow guide holes on the perforated metal plate 4 to pre-bake the composite insulator core rod 11, since the diameter of the flow guide holes gradually increases along the airflow direction of the air duct 5 and the axis is at an angle of 45° with the extension direction of the heating pipe 3, the hot air is more uniformly distributed in the pre-baking box body 1, meanwhile, the high-temperature-resistant reflective coating 14 coated on the inner wall of the pre-baking box body 1 can reflect part of the heat back to the inside of the pre-baking box body 1, so that the heat loss is reduced.

[0062] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5The application provides a composite insulator core rod pre-baking device, and the arc-shaped groove 15 of the door curtain assembly 6 is arranged as a semicircular groove, the curvature of the arc-shaped groove 15 is matched with the outer diameter of the composite insulator core rod 11, the outer wall bottom end of the liftable baffle 16 is fixedly installed with a sealing strip 18, the sealing strip 18 is in contact with the inner wall bottom end of the pre-baking oven main body 1 to form a closed space, the outer wall side of the liftable baffle 16 is provided with a sliding rail groove 2, the sliding rail groove 2 is provided with a ball bearing in a matched mode, the cross section of the sliding rail groove 2 is a T-shaped structure, and the ball bearing is embedded in the inner wall of the guide rail 17 of the door curtain assembly 6.

[0063] The outer wall bottom four corners of the pre-baking oven main body 1 are movably installed with casters 13, the casters 13 are detachably connected with the bottom plate of the pre-baking oven main body 1 through bolts, the wheel body of the caster 13 is arranged as a universal wheel structure, the inner wall of the pre-baking oven main body 1 is coated with a high-temperature-resistant reflective coating 14, and the reflective coating 14 covers the area directly opposite the heating pipe 3.

[0064] Further, first, the controller 10 starts the air cylinder 7, the piston rod is retracted upwards, the liftable baffle 16 is driven to vertically rise along the guide rail 17, at this time, the embedded ball bearing in the sliding rail groove 2 of the door curtain assembly 6 ensures smooth sliding, and the T-shaped cross section structure of the guide rail 17 prevents the baffle from deviating. After the liftable baffle 16 is completely raised, the inlet and outlet of the pre-baking oven main body 1 are completely opened.

[0065] Then, the composite insulator core rod 11 is horizontally placed on the tray 21, the anti-skid lines on the surface of the tray are used to prevent sliding, the end of the core rod is embedded in the positioning protrusions 22 around the tray 21, so that the axial alignment is ensured, then the vertical air cylinder 20 is started through the controller 10, the piston rod of the vertical air cylinder 20 is raised, the height of the core rod is adjusted to be coaxial with the arc-shaped groove 15 of the door curtain assembly 6, the piston rod of the air cylinder 7 is controlled by the controller 10 to be pressed downwards, the liftable baffle 16 is lowered to the bottom along the guide rail 17, the sealing strip 18 at the bottom end of the baffle is in close contact with the inner wall bottom end of the pre-baking oven main body 1 to form a closed space, the heating pipe 3 is started by the controller 10, heat is conducted to the perforated metal plate 4 through the metal support 23, the high-temperature-resistant reflective coating 14 on the inner wall of the pre-baking oven reflects heat to the surface of the core rod, and in the heating process, the air duct 5 introduces airflow through an external air source, and the airflow is uniformly diffused at an angle of 45° along the flow guide hole.

[0066] Finally, after the pre-baking is completed, the controller 10 sends an electric signal to the electromagnetic valve when the set time is over, the valve core of the electromagnetic valve is turned to change the direction of the gas path, compressed air enters the rodless cavity of the air cylinder 7 through the electromagnetic valve to drive the piston to move upwards and raise the liftable baffle 16 under the action of air pressure, the limit switch on the air cylinder 7 sends a signal to the controller 10, and the controller 10 cuts off the power supply of the electromagnetic valve after receiving the signal, the electromagnetic valve is reset, the air cylinder 7 stops moving, the piston rod is directly fixedly connected with the tray 21, and the tray 21 is pulled to be lowered synchronously.

[0067] Working principle: First, adjust the height of the tray 21 through the vertical cylinder 20, so that the axis of the composite insulator core rod 11 is aligned with the arc-shaped slot of the door curtain assembly 6, then the cylinder 7 drives the liftable baffle 16 of the door curtain assembly 6 to rise along the guide rail 17, the core rod enters the pre-baking oven with the tray 21, and the door curtain forms a closed space with the box body through the sealing strip 18 after closing, reducing heat loss.

[0068] Then, the heating pipe 3 inside the pre-baking oven starts, and the heat is evenly transmitted to the heating cavity. At the same time, the air duct 5 cooperates with the perforated metal plate 4 to guide the air circulation by using the gradually changing aperture and inclination angle of the flow guide hole, so that the temperature distribution in the oven is uniform. In the process of continuous heating, the high-temperature resistant reflective coating 14 further reduces heat loss.

[0069] Finally, when the preset heating time is over, the controller 10 detects the external environment through the grating sensor 9, which forms an infrared light curtain on both sides of the upper cover 8. If there is no person nearby, the cylinder 7 drives the upper cover 8 to open automatically. If the infrared induction is triggered, the operation is paused to ensure safety. After preheating is completed, the cylinder jacking mechanism 12 lowers the core rod, the door curtain rises, and the operator takes out the core rod.

[0070] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A composite insulator core rod prebaking apparatus, characterized by: Including pre-baking main body (1) and door curtain assembly (6), the outer wall of pre-baking main body (1) is provided with door curtain assembly (6) on both sides, and the two ends of guide rail (17) are vertically fixedly installed at the edge of the inlet and outlet of pre-baking main body (1); The door curtain assembly (6) comprises an arc-shaped groove (15) and a liftable baffle (16), the bottom of the liftable baffle (16) is provided with an arc-shaped groove (15), the outer wall side edge of the liftable baffle (16) is welded with a sliding block, the sliding block is embedded in the groove of the guide rail (17), and the liftable baffle (16) is slidably connected to the edge of the inlet and outlet of the pre-baking main body (1) through the guide rail (17); the piston rod end of the cylinder (7) is rigidly connected to the top end of the liftable baffle (16) through a connecting plate; The outer wall of the pre-baking main body (1) is fixedly provided with a cylinder jacking mechanism (12), and the cylinder jacking mechanism (12) comprises a base (19), a vertical cylinder (20) and a tray (21); the top end of the base (19) is provided with a horizontal adjusting bolt, and the end of the horizontal adjusting bolt is provided with a rubber pad; the rubber pad is in contact with the ground to form an anti-skid support; The outer wall of the base (19) is fixedly installed on the outer wall side of the pre-baking main body (1), the vertical cylinder (20) is vertically fixedly installed on the outer wall top end of the base (19) through a bolt, the piston rod of the vertical cylinder (20) extends upward in the vertical direction, the end of the piston rod is provided with a mounting plate, and the tray (21) is fixedly installed on the top end of the piston rod through the mounting plate; the tray (21) is provided in the form of a circular plate, and the central axis of the tray (21) is on the same vertical axis as the axis of the arc-shaped groove (15) of the door curtain assembly (6); The outer surface of the tray (21) is provided with anti-skid lines, and the outer wall of the tray (21) is fixedly provided with a positioning protrusion (22) around the edge; the positioning protrusion (22) is connected to the end of the composite insulator core rod (11) through clamping.

2. A composite insulator core rod pre-baking apparatus according to claim 1, characterized in that: The pre-baking main body (1) is internally provided with a heating cavity, the bottom of the heating cavity is provided with a metal support (23), the outer wall top end of the metal support (23) is provided with parallelly distributed heating pipes (3), the top of the heating pipes (3) is provided with a perforated metal plate (4), and the perforated metal plate (4) is welded on the inner wall of the pre-baking main body (1) on both sides; The perforated metal plate (4) and the bottom of the heating cavity form an air duct (5), and the air duct (5) is communicated with the outside of the pre-baking main body (1).

3. A composite insulator core rod pre-baking apparatus as claimed in claim 1, wherein: The outer wall top end of the pre-baking main body (1) is fixedly provided with an upper cover (8), the outer wall of the upper cover (8) is symmetrically provided with grating sensors (9) on both side edges, and the outer wall front end of the pre-baking main body (1) is fixedly provided with a controller (10); The upper cover (8) is rotatably connected to the pre-baking main body (1) through a hinge, the grating sensors (9) are electrically connected to the controller (10) through a data line, and the fixed end of the hinge is welded on the top edge of the pre-baking main body (1).

4. A composite insulator core rod pre-baking apparatus as claimed in claim 1, wherein: The arc-shaped slot (15) of the door curtain assembly (6) is provided as a semicircular groove, the curvature of the arc-shaped slot (15) is matched with the outer diameter of the composite insulator core rod (11), the outer wall bottom end of the liftable baffle (16) is fixedly provided with a sealing strip (18), and the sealing strip (18) is in contact with the inner wall bottom end of the pre-oven body (1) to form a closed space. The outer wall side of the liftable baffle (16) is provided with a sliding rail groove (2), the sliding rail groove (2) is provided with a ball bearing in a matched mode, the cross section of the sliding rail groove (2) is provided as a T-shaped structure, and the ball bearing is embedded in the inner wall of the guide rail (17) of the door curtain assembly (6).

5. A composite insulator core rod pre-baking apparatus as claimed in claim 1, wherein: The outer wall bottom four corners of the pre-oven body (1) are movably provided with casters (13), the casters (13) are detachably connected with the bottom plate of the pre-oven body (1) through bolts, the wheel body of the caster (13) is provided as a universal wheel structure, the inner wall of the pre-oven body (1) is coated with a high-temperature-resistant reflective coating (14), and the reflective coating (14) covers the area opposite to the heating pipe (3).

6. A composite insulator core rod pre-baking apparatus as claimed in claim 2, wherein: The surface of the perforated metal plate (4) is uniformly provided with flow guide holes, the diameter of the flow guide holes gradually increases along the air flow direction of the air duct (5), and the axis of the flow guide hole is at an angle of 45° with the extension direction of the heating pipe (3).

7. A composite insulator core rod pre-baking apparatus as claimed in claim 3, wherein: The controller (10) is fixedly installed on the outer wall right side of the pre-oven body (1) through a metal support (23), the display screen and the operation button of the controller (10) are embeddedly installed on the same panel, and a heat insulation layer is arranged between the panel and the outer wall of the pre-oven body (1).

8. A composite insulator core rod pre-baking apparatus as claimed in claim 2, wherein: The two ends of the heating pipe (3) are connected with the metal support (23) through a clamp (24), the bottom of the metal support (23) is welded with a heat sink (25), and the heat sink (25) extends to the outside of the inner wall bottom plate of the pre-oven body (1).

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