A polyurethane thermal insulation pipe forming equipment and forming process thereof

Abstract

The present invention discloses a polyurethane insulation pipe forming device and a forming process thereof in the technical field of polyurethane production equipment, comprising a bottom plate, a cooling component and a forming component, wherein a fixed plate is fixedly installed on the left side of the top surface of the bottom plate, an electromagnet is arranged on the top of the fixed plate, a movable plate is movably connected to the top of the electromagnet, and a push-out spring is fixedly installed on the bottom of the movable plate. The present invention is connected to the power connection component through a power connection plate, and then the electromagnet is powered off, so that the electromagnet loses its magnetism, that is, it cannot adsorb the metal sheet. At this time, the push-out spring in a compressed state drives the movable plate and the cutting component to move toward the polyurethane insulation pipe under the action of elasticity, and cuts the cutting component when the cutting component contacts the polyurethane insulation pipe, and drives the power connection plate to connect the power connection component through the rotation of the conveying roller, so that the device automatically cuts the polyurethane insulation pipe, and the operation is simple, which reduces the labor intensity of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane production equipment, in particular to polyurethane thermal insulation pipe forming equipment. Background Art

[0002] The polyurethane insulated pipe is composed of a working steel pipe for conveying the medium, a polyurethane insulation layer and a polyethylene protective layer, which are combined outward in sequence through equipment. During production, molding equipment is required to fill the polyurethane protective layer between the working steel pipe and the polyethylene protective layer.

[0003] When in use, most existing molding equipment adopts a one-step method to produce polyurethane insulated pipes, that is, a working steel pipe is placed on the equipment for transportation, and a polyethylene protective layer is injected and a polyurethane insulation layer is filled on the working steel pipe during transportation. However, in actual production, the working steel pipe will be fully covered with the polyurethane insulation layer and the polyethylene protective layer. Therefore, at the end of production, the polyurethane insulated pipe needs to be cut according to production needs. At this time, the integrally molded polyethylene protective layer and polyurethane insulation layer need to be cut at the separation position. Most existing cutting methods use operators to cut and separate the polyethylene protective layer and the polyurethane insulation layer with handheld knives, which is complicated to operate and increases the labor intensity of the operators.

[0004] When the existing molding equipment is in use, since it adopts a one-step method to produce the polyurethane thermal insulation pipe, the separation area on the polyurethane thermal insulation pipe needs to be cut after the production is completed. However, during the cutting, the polyurethane thermal insulation pipe is always in a state of being transported in the downward direction. This requires the operator to move along with the movement of the polyurethane thermal insulation pipe during the cutting, and the operator will mostly face the polyurethane thermal insulation pipe during the cutting. Therefore, the operator needs to move left and right during the movement, which may cause tripping, thereby reducing the safety of the device.

[0005] When using existing molding equipment, it adopts a one-step molding production method. However, after the production of the polyurethane thermal insulation pipe is completed, the operator is still required to manually cut the separation area. And because the polyurethane thermal insulation pipe is always in a transportation state during cutting, the cutting area may be offset due to the movement of the polyurethane thermal insulation pipe during cutting, which may cause the length of the polyurethane thermal insulation pipe after cutting to be too large or too small, thereby reducing the production accuracy of the device. Summary of the invention

[0006] The object of the present invention is to provide a polyurethane thermal insulation pipe forming device to solve the problems of the shortcomings of the prior art mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a polyurethane thermal insulation pipe forming equipment, comprising a bottom plate, a cooling component and a forming component, a fixed plate is fixedly installed on the left side of the top surface of the bottom plate, an electromagnet is provided on the top of the fixed plate, a movable plate is movably connected to the top of the electromagnet, a push-out spring is fixedly installed on the bottom end of the movable plate, a metal sheet is fixedly installed on the middle part of the movable plate, a cutting component is fixedly installed on one end of the movable plate close to the center of the bottom plate, a power connection component is fixedly installed on one end of the electromagnet close to the center of the bottom plate, a conveying roller is fixedly installed on the top of the bottom plate, a deceleration component is fixedly installed on both the front and rear ends of the conveying roller, a cam is provided at the front end of the deceleration component, an acceleration component is fixedly installed on the front and rear ends of the conveying roller, a blowing-off component is fixedly installed on the top surface of the bottom plate, a supporting plate is fixedly installed on the top surface of the bottom plate, and the top end of the supporting plate is movably connected to the power connection plate;

[0008] When the polyurethane insulation pipe contacts the conveying roller, it drives the conveying roller to rotate through the contact with the conveying roller, and drives the cam to rotate through the deceleration component. When the protrusion on the cam contacts the power board, it can drive the power board to move and connect the circuit-breaking signal in the electromagnet. At this time, the electromagnet loses its magnetic force, and the moving plate moves toward the polyurethane insulation pipe under the elastic force of the ejection spring, thereby driving the cutting component to move toward the polyurethane insulation pipe to cut the polyurethane insulation pipe. When the protrusion on the cam rotates away from the power board, the power board moves downward, thereby separating the power board from the power terminal, thereby disconnecting the circuit-breaking signal in the electromagnet, so that the electromagnet is energized to generate magnetism, and then the metal sheet is attracted to move toward the electromagnet, and the cutting component is pulled away from the polyurethane insulation pipe. At this time, the polyethylene protective layer and the polyurethane insulation layer below the cut directly fall downward and separate from the working steel pipe. When the conveying roller rotates, the acceleration component can drive the blowing component to work, and the outside air is blown to the polyethylene protective layer and the polyurethane insulation layer on the upper cutting area, so that the polyethylene protective layer and the polyurethane insulation layer on the upper cutting area are separated from the working steel pipe and fall off.

[0009] The power connection board is connected to the power connection component, and then the power is cut off from the electromagnet, causing the electromagnet to lose its magnetism, that is, it cannot adsorb the metal sheet. At this time, the ejection spring in a compressed state drives the moving plate and the cutting component to move toward the polyurethane insulation pipe under the action of elasticity. When the cutting component contacts the polyurethane insulation pipe, the cutting component is cut, and the power connection board is driven to connect the power connection component through the rotation of the conveying roller, so that the device can automatically cut the polyurethane insulation pipe. The operation is simple and the labor intensity of the operator is reduced.

[0010] Preferably, a support frame is fixedly mounted on the right side of the fixed plate, a return spring is fixedly mounted on the left side of the top of the support frame, and the left end of the return spring is fixedly mounted on the right side of the electromagnet;

[0011] When the cutting assembly is cutting, the leftward movement of the polyurethane insulation pipe can drive the cutting assembly to move to the left, causing the electromagnet to slide to the left in the fixing plate, stretching the reset spring. After the cutting assembly is separated from the polyurethane insulation pipe, the stretched reset spring moves to the right under the action of elasticity, thereby resetting the cutting assembly.

[0012] By arranging a reset spring on the right side of the electromagnet and slidably arranging the electromagnet on the top of the fixed plate, when the cutting assembly cuts the polyurethane thermal insulation pipe, even if the polyurethane thermal insulation pipe is in a state of being transported all the time, the reset spring can pull the cutting assembly back for reset after cutting, so that the cutting assembly can move with the movement of the polyurethane thermal insulation pipe, and there is no need for an operator to perform cutting, thereby avoiding the operator from tripping and improving the safety of the device.

[0013] Preferably, a plug-in shaft is movably connected to the middle part of the cam, and the plug-in shaft is connected to the cam;

[0014] When the length of the polyurethane thermal insulation pipe needs to be controlled, the cam is pulled out of the plug-in shaft forward, and then the cam is rotated. When the cam is inserted on the plug-in shaft, when the cam is rotated counterclockwise, the contact time between the protrusion on the cam and the power board can be increased, and vice versa, the contact time between the protrusion on the cam and the power board can be reduced, thereby adjusting the interval of the cutting assembly cutting the polyurethane thermal insulation pipe, that is, controlling the length of the polyurethane thermal insulation pipe;

[0015] By pulling out the cam and rotating it to insert the plug-in shaft, the cutting interval of the cutting component on the polyurethane insulation pipe can be adjusted, that is, the length of the polyurethane insulation pipe can be controlled. Since the wide bandwidth value of the cutting component is fixed, when the polyethylene protective layer and the polyurethane insulation layer are ring-cut, the width values ​​of the polyethylene protective layer and the polyurethane insulation layer in the cutting area can be ensured to remain constant, thereby achieving precise control of the length value of the polyurethane insulation pipe and improving the production accuracy of the device.

[0016] Preferably, the cutting assembly comprises a fixed frame, the fixed frame is fixedly mounted on one end of the movable plate close to the center of the bottom plate, the left and right ends of the fixed frame are fixedly mounted with circular cutting blades, and the inner wall of the fixed frame is fixedly mounted with a cutting blade;

[0017] When the cutting assembly contacts the polyurethane insulation pipe, the polyethylene protective layer and the polyurethane insulation layer are cut in a circular manner by the circular cutting blade, and the polyethylene protective layer and the polyurethane insulation layer are cut in a horizontal direction by the cutting blade.

[0018] By setting the circular cutting blade and the cutting blade, the polyurethane insulation pipe can be circularly cut when the polyethylene protective layer and the polyurethane insulation layer are cut, and the circularly cut part can be divided into two upper and lower semicircular rings, which is convenient for the cutting part to be dropped.

[0019] Preferably, the power connection assembly includes a fixed wiring harness, the fixed wiring harness is fixedly mounted on one end of the electromagnet close to the center of the bottom plate, and a power connection terminal is fixedly mounted on the right side of the bottom end of the fixed wiring harness, and the power connection terminal is electrically connected to the electromagnet through the fixed wiring harness;

[0020] When the power board moves up to the power board and contacts the power terminals, the power board is connected to the power terminals, and then the circuit-breaking signal in the electromagnet is connected through the fixed wiring harness, thereby cutting off the power to the electromagnet;

[0021] By setting a power terminal at the bottom end of the fixed wiring harness, when the electromagnet moves, the fixed wiring harness can drive the power terminal to move left and right on the power board, and ensure that the power terminal is always located above the power board, avoiding the situation where the power board cannot be connected to the power terminal, thereby ensuring the stability of the device operation.

[0022] Preferably, the deceleration assembly comprises a deceleration wheel 1, which is fixedly mounted on the front and rear ends of the conveying roller, the surface of the deceleration wheel 1 is transmission-connected with a deceleration connecting belt, the left end of the deceleration connecting belt is transmission-connected with a deceleration wheel 2, the deceleration wheel 2 is movably connected to the top surface of the bottom plate, the deceleration wheel 2 is movably sleeved on the rear side of the cam, the diameter of the deceleration wheel 1 is one third of the diameter of the deceleration wheel 2, and the front side of the deceleration wheel 2 is fixedly mounted on the rear end of the plug-in shaft;

[0023] When the conveying roller rotates, the first reduction wheel can drive the second reduction wheel to rotate, thereby driving the cam to rotate;

[0024] When the reduction wheel one drives the reduction wheel two to rotate, the rotation speed of the reduction wheel two can be slowed down. When the reduction wheel one rotates one circle, the reduction wheel two rotates only one-third, thereby ensuring that when the cam pushes the power board, the polyurethane insulation pipe is transported long enough to avoid affecting the normal production of the device.

[0025] Preferably, the acceleration assembly comprises an acceleration wheel 1, which is fixedly mounted on the front and rear ends of the conveying roller, the surface of the acceleration wheel 1 is transmission-connected with an acceleration connecting belt, the left end of the acceleration connecting belt is transmission-connected with an acceleration wheel 2, and the diameter of the acceleration wheel 2 is one-fourth of the diameter of the acceleration wheel 1;

[0026] When the conveying roller rotates, it can also drive the acceleration wheel 1 to rotate, and then drive the acceleration wheel 2 to rotate through the acceleration connecting belt, and then drive the fan blades to rotate;

[0027] When the acceleration wheel 1 drives the acceleration wheel 2 to rotate, the rotation of the acceleration wheel 2 can be accelerated. When the acceleration wheel 1 rotates one circle, the acceleration wheel 2 rotates four circles, ensuring that sufficient air can be drawn into the fixed box, thereby ensuring that the polyethylene protective layer and the polyurethane insulation layer on the upper layer of the cutting part can be separated from the working steel pipe, thereby ensuring the smooth operation of the device.

[0028] Preferably, the blow-off assembly comprises a fixed box, the fixed box is fixedly mounted on the top surface of the bottom plate, the inner cavity of the fixed box is movably connected with a fan blade, the left and right sides of the top of the fixed box are respectively fixedly mounted with an air outlet pipe and an air inlet pipe, and the fan blade is fixedly mounted on the rear end of the second acceleration wheel;

[0029] When the fan blades rotate, they draw outside air into the fixed box through the air inlet pipe, and then eject it through the air outlet pipe. After the cutting assembly is separated from the polyurethane insulation pipe, the ejected air can be sprayed to the polyethylene protective layer and polyurethane insulation layer above the cutting, so that the polyethylene protective layer and polyurethane insulation layer on the upper layer of the cutting area are separated from the working steel pipe and fall off.

[0030] The fan blades are driven to rotate by the second acceleration wheel to draw in air, and the potential energy of the rotation of the conveying roller is utilized. There is no need to set up a separate driving component, which reduces the use cost of the device and improves the environmental protection effect of the device.

[0031] Preferably, the bottom surface of the power board contacts the top of the cam, the cooling assembly is located on the left side of the molding assembly, the fixing plate is located on the left side of the cooling assembly, and one end of the ejection spring is fixedly mounted on the electromagnet;

[0032] The working steel pipe is placed on the conveying roller arranged on the right side of the device. The working steel pipe moves to the left on the conveying roller. When the working steel pipe enters the fixed plate, a polyethylene protective layer is automatically wrapped on the working steel pipe, and a polyurethane insulation layer is filled between the polyethylene protective layer and the working steel pipe. Finally, the working steel pipe moves to the molding assembly, and is spray-cooled through the molding assembly to obtain a polyurethane insulation pipe.

[0033] When producing polyurethane insulated pipes, the polyurethane insulation layer can be automatically filled and the polyethylene protective layer can be automatically injection molded. The polyurethane insulated pipe can also be cooled through the molding components to avoid the risk of high temperature burns and improve the safety of the device.

[0034] Preferably, the following steps are included

[0035] When in use, the working steel pipe is placed on the conveying roller arranged on the right side of the device, and the working steel pipe moves to the left on the conveying roller;

[0036] When the polyurethane insulation pipe contacts the conveying roller, the contact with the conveying roller drives the conveying roller to rotate. When the conveying roller rotates, the reduction wheel 1 drives the reduction wheel 2 to rotate, and then drives the cam to rotate. When the protrusion on the cam contacts the power board, the power board can be driven to move, so that the power board contacts the power terminal, and then the circuit-breaking signal in the electromagnet is connected through the fixed wiring harness. At this time, the electromagnet loses its magnetic force, and the moving plate moves toward the polyurethane insulation pipe under the elastic force of the push-out spring;

[0037] Then the cutting assembly is driven to move toward the polyurethane insulation pipe, the polyethylene protective layer and the polyurethane insulation layer are cut in a circular manner by the circular cutting blade, and the polyethylene protective layer and the polyurethane insulation layer are cut in a horizontal direction by the cutting blade. When the protrusion on the cam rotates away from the power board, the power board moves downward, so that the power board is separated from the power terminal, and then the circuit-breaking signal in the electromagnet is disconnected, so that the electromagnet is energized to generate magnetism, and then the metal sheet is attracted to move toward the electromagnet, and the cutting assembly is pulled away from the polyurethane insulation pipe. At this time, the polyethylene protective layer and the polyurethane insulation layer below after cutting directly fall downward and separate from the working steel pipe;

[0038] When the conveying roller rotates, it can also drive the acceleration wheel 1 to rotate, and then drive the acceleration wheel 2 to rotate through the acceleration connecting belt, and then drive the fan blades to rotate. When the fan blades rotate, they draw the outside air into the fixed box through the air inlet pipe, and then spray it out through the air outlet pipe. After the cutting component is separated from the polyurethane insulation pipe, the sprayed air can be sprayed to the polyethylene protective layer and polyurethane insulation layer above the cutting, so that the polyethylene protective layer and polyurethane insulation layer on the upper layer of the cutting area are separated from the working steel pipe and fall off;

[0039] When the cutting assembly is cutting, the leftward movement of the polyurethane insulation pipe can drive the cutting assembly to move to the left, causing the electromagnet to slide to the left in the fixing plate, stretching the reset spring. After the cutting assembly is separated from the polyurethane insulation pipe, the stretched reset spring moves to the right under the action of elasticity, thereby resetting the cutting assembly.

[0040] When it is necessary to control the length of the polyurethane thermal insulation pipe, pull the cam forward out of the plug-in shaft, then rotate the cam and insert it onto the plug-in shaft. When the cam is rotated counterclockwise, the contact time between the raised part on the cam and the power board can be increased, and vice versa, the contact time between the raised part on the cam and the power board can be reduced, thereby adjusting the interval of the cutting assembly for cutting the polyurethane thermal insulation pipe, that is, controlling the length of the polyurethane thermal insulation pipe.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention connects the power connection assembly through the power connection board, and then cuts off the power to the electromagnet, so that the electromagnet loses its magnetism, that is, it cannot adsorb the metal sheet. At this time, the ejection spring in a compressed state drives the moving plate and the cutting assembly to move toward the polyurethane insulation pipe under the action of elasticity. When the cutting assembly contacts the polyurethane insulation pipe, the cutting assembly is cut, and the power connection board is driven to connect the power connection assembly through the rotation of the conveying roller, so that the device automatically cuts the polyurethane insulation pipe. The operation is simple and the labor intensity of the operator is reduced.

[0043] 2. The present invention arranges a reset spring on the right side of the electromagnet and slides the electromagnet on the top of the fixed plate. When the cutting assembly cuts the polyurethane thermal insulation pipe, even if the polyurethane thermal insulation pipe is in a state of being transported all the time, the reset spring can pull the cutting assembly back for reset after cutting, so that the cutting assembly can move with the movement of the polyurethane thermal insulation pipe, and there is no need for an operator to perform cutting, thereby avoiding the operator from tripping and improving the safety of the device.

[0044] 3. The present invention can adjust the cutting interval of the polyurethane thermal insulation pipe by the cutting component by pulling out the cam and rotating it to insert the plug-in shaft, that is, control the length of the polyurethane thermal insulation pipe. Since the wide band value of the cutting component is fixed, when the polyethylene protective layer and the polyurethane thermal insulation layer are ring-cut, the width values ​​of the polyethylene protective layer and the polyurethane thermal insulation layer in the cutting area can be ensured to remain constant, thereby achieving precise control of the length value of the polyurethane thermal insulation pipe and improving the production accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0046] Figure 2 The structure of the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0047] Figure 3 It is a cross-sectional schematic diagram of the bottom plate of the structure of the present invention;

[0048] Figure 4 The structure of the present invention Figure 3 The enlarged schematic diagram of point B in the middle;

[0049] Figure 5 This is a schematic diagram of the connection of the structural fixing plate of the present invention;

[0050] Figure 6 The structure of the present invention Figure 5 The enlarged schematic diagram at C in the middle;

[0051] Figure 7 This is a schematic diagram of the connection of the structural cutting components of the present invention;

[0052] Figure 8 This is a schematic diagram of the connection of the conveying roller structure of the present invention;

[0053] Fig. 9 The structure of the present invention Figure 8 The enlarged schematic diagram at D in the middle;

[0054] Fig.10 It is a schematic diagram of the shedding of the polyurethane thermal insulation layer and the polyethylene protective layer of the structure of the present invention.

[0055] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0056] 1. Bottom plate; 2. Cooling assembly; 3. Forming assembly; 4. Fixed plate; 5. Electromagnet; 6. Moving plate; 7. Push-out spring; 8. Metal sheet; 9. Cutting assembly; 901. Fixed frame; 902. Circular cutting blade; 903. Cutting blade; 10. Power connection assembly; 101. Fixed wiring harness; 102. Power connection terminal; 11. Conveying roller; 12. Speed ​​reduction assembly; 121. Speed ​​reduction wheel 1; 122. Speed ​​reduction connecting belt; 123. Speed ​​reduction wheel 2; 13. Cam; 14. Acceleration assembly; 141. Speed ​​reduction wheel 1; 142. Speed ​​reduction connecting belt; 143. Speed ​​reduction wheel 2; 15. Blow-off assembly; 151. Fixed box; 152. Fan blade; 153. Exhaust pipe; 154. Inlet pipe; 16. Support plate; 17. Power connection board; 18. Support frame; 19. Reset spring; 20. Plug shaft. DETAILED DESCRIPTION

[0057] See also Figure 1-10 The present invention provides a technical solution: a polyurethane thermal insulation pipe forming device, comprising a bottom plate 1, a cooling component 2 and a forming component 3, a fixed plate 4 is fixedly installed on the left side of the top surface of the bottom plate 1, an electromagnet 5 is provided on the top of the fixed plate 4, a moving plate 6 is movably connected to the top of the electromagnet 5, a push-out spring 7 is fixedly installed on the bottom end of the moving plate 6, a metal sheet 8 is fixedly installed in the middle of the moving plate 6, a cutting component 9 is fixedly installed on one end of the moving plate 6 close to the center of the bottom plate 1, a power connection component 10 is fixedly installed on one end of the electromagnet 5 close to the center of the bottom plate 1, a conveying roller 11 is fixedly installed on the top of the bottom plate 1, a deceleration component 12 is fixedly installed on the front and rear ends of the conveying roller 11, a cam 13 is provided at the front end of the deceleration component 12, an acceleration component 14 is fixedly installed on the front and rear ends of the conveying roller 11, a blow-off component 15 is fixedly installed on the top surface of the bottom plate 1, a support plate 16 is fixedly installed on the top surface of the bottom plate 1, and a power connection plate 17 is movably connected to the top of the support plate 16;

[0058] When the polyurethane thermal insulation pipe contacts the conveying roller 11, the contact with the conveying roller 11 drives the conveying roller 11 to rotate, and the deceleration component 12 drives the cam 13 to rotate. When the protrusion on the cam 13 contacts the power board 17, it can drive the power board 17 to move, and connect the circuit breaker signal in the electromagnet 5. At this time, the electromagnet 5 loses its magnetic force, and the moving plate 6 moves toward the polyurethane thermal insulation pipe under the elastic force of the push-out spring 7, thereby driving the cutting component 9 to move toward the polyurethane thermal insulation pipe to cut the polyurethane thermal insulation pipe. When the protrusion on the cam 13 rotates away from the power board 17, the power board 17 moves downward, so that The power board 17 is separated from the power terminal 102, and then the circuit-breaking signal in the electromagnet 5 is disconnected, so that the electromagnet 5 is energized to generate magnetism, and then the metal sheet 8 is attracted to move toward the electromagnet 5, and the cutting component 9 is pulled away from the polyurethane insulation pipe. At this time, the polyethylene protective layer and the polyurethane insulation layer below the cut directly fall downward and separate from the working steel pipe. When the conveying roller 11 rotates, the acceleration component 14 can drive the blowing component 15 to work, and the outside air is blown to the polyethylene protective layer and the polyurethane insulation layer on the upper cutting area, so that the polyethylene protective layer and the polyurethane insulation layer on the upper cutting area are separated from the working steel pipe and fall off;

[0059] The power connection board 17 is connected to the power connection component 10, and then the electromagnet 5 is powered off, so that the electromagnet 5 loses its magnetism, that is, it cannot adsorb the metal sheet 8. At this time, the ejection spring 7 in the compressed state drives the moving plate 6 and the cutting component 9 to move toward the polyurethane insulation pipe under the action of elasticity. When the cutting component 9 contacts the polyurethane insulation pipe, the cutting component 9 is cut, and the power connection board 17 is driven to connect with the power connection component 10 through the rotation of the conveying roller 11, so that the device automatically cuts the polyurethane insulation pipe. The operation is simple and the labor intensity of the operator is reduced.

[0060] Among them, a support frame 18 is fixedly installed on the right side of the fixed plate 4, a return spring 19 is fixedly installed on the left side of the top of the support frame 18, and the left end of the return spring 19 is fixedly installed on the right side of the electromagnet 5;

[0061] When the cutting assembly 9 is cutting, the leftward movement of the polyurethane insulation pipe can drive the cutting assembly 9 to move to the left, so that the electromagnet 5 slides to the left in the fixing plate 4, stretching the reset spring 19. After the cutting assembly 9 is separated from the polyurethane insulation pipe, the stretched reset spring 19 moves to the right under the action of elasticity, thereby resetting the cutting assembly 9.

[0062] By setting a reset spring 19 on the right side of the electromagnet 5 and sliding the electromagnet 5 on the top of the fixed plate 4, when the cutting component 9 cuts the polyurethane thermal insulation pipe, even if the polyurethane thermal insulation pipe is in a state of being transported all the time, the reset spring 19 can pull the cutting component 9 back for reset after cutting, so that the cutting component 9 can move with the movement of the polyurethane thermal insulation pipe, and there is no need for an operator to perform cutting, thereby avoiding the operator from tripping and improving the safety of the device.

[0063] The middle part of the cam 13 is movably connected with a plug-in shaft 20, and the plug-in shaft 20 is connected to the cam 13;

[0064] When the length of the polyurethane thermal insulation pipe needs to be controlled, the cam 13 is pulled forward out of the plug-in shaft 20, and then the cam 13 is rotated and inserted on the plug-in shaft 20. When the cam 13 is rotated counterclockwise, the contact time between the protrusion on the cam 13 and the power board 17 can be increased, and vice versa, the contact time between the protrusion on the cam 13 and the power board 17 can be reduced, thereby adjusting the interval of the cutting assembly 9 cutting the polyurethane thermal insulation pipe, that is, controlling the length of the polyurethane thermal insulation pipe;

[0065] By pulling out the cam 13 and rotating it to insert the plug-in shaft 20, the cutting interval of the polyurethane thermal insulation pipe by the cutting component 9 can be adjusted, that is, the length of the polyurethane thermal insulation pipe can be controlled. Since the wide bandwidth value of the cutting component 9 is fixed, when the polyethylene protective layer and the polyurethane thermal insulation layer are ring-cut, the width values ​​of the polyethylene protective layer and the polyurethane thermal insulation layer in the cutting area can be ensured to remain constant, thereby achieving precise control of the length value of the polyurethane thermal insulation pipe and improving the production accuracy of the device.

[0066] The cutting assembly 9 includes a fixed frame 901, which is fixedly mounted on one end of the movable plate 6 close to the center of the bottom plate 1, and a circular cutting blade 902 is fixedly mounted on both the left and right ends of the fixed frame 901, and a cutting blade 903 is fixedly mounted on the inner wall of the fixed frame 901;

[0067] When the cutting assembly 9 contacts the polyurethane insulation pipe, the polyethylene protective layer and the polyurethane insulation layer are cut in a circular manner by the circular cutting blade 902, and the polyethylene protective layer and the polyurethane insulation layer are cut in a horizontal direction by the cutting blade 903.

[0068] By providing the circular cutting blade 902 and the cutting blade 903, the polyurethane insulation pipe can be circularly cut when the polyethylene protective layer and the polyurethane insulation layer are cut, and the circularly cut part can be divided into two upper and lower semicircular rings to facilitate the blanking of the cut part.

[0069] The power connection assembly 10 includes a fixed wiring harness 101, which is fixedly mounted on one end of the electromagnet 5 close to the center of the bottom plate 1, and a power connection terminal 102 is fixedly mounted on the right side of the bottom end of the fixed wiring harness 101, and the power connection terminal 102 is electrically connected to the electromagnet 5 through the fixed wiring harness 101;

[0070] When the power board 17 moves upward until the power board 17 contacts the power terminal 102, the power board 17 is connected to the power terminal 102, and then the circuit-breaking signal in the electromagnet 5 is connected through the fixed wiring harness 101, and the electromagnet 5 is powered off;

[0071] By setting the power terminal 102 at the bottom end of the fixed harness 101, when the electromagnet 5 moves, the fixed harness 101 can drive the power terminal 102 to move left and right on the power board 17, and ensure that the power terminal 102 is always located above the power board 17, avoiding the situation where the power board 17 cannot be connected to the power terminal 102, thereby ensuring the stability of the device operation.

[0072] The deceleration assembly 12 includes a deceleration wheel 121, which is fixedly mounted on the front and rear ends of the conveying roller 11, and the surface of the deceleration wheel 121 is transmission-connected with a deceleration connecting belt 122, and the left end of the deceleration connecting belt 122 is transmission-connected with a deceleration wheel 123, which is movably connected to the top surface of the bottom plate 1, and the deceleration wheel 123 is movably sleeved on the rear side of the cam 13, and the diameter of the deceleration wheel 121 is one-third of the diameter of the deceleration wheel 123, and the front side of the deceleration wheel 123 is fixedly mounted on the rear end of the plug-in shaft 20;

[0073] When the conveying roller 11 rotates, the reduction wheel 1 121 can drive the reduction wheel 2 123 to rotate, thereby driving the cam 13 to rotate;

[0074] When the reduction wheel 121 drives the reduction wheel 2 123 to rotate, the rotation speed of the reduction wheel 2 123 can be slowed down. When the reduction wheel 121 rotates one circle, the reduction wheel 2 123 rotates only one third, thereby ensuring that when the cam 13 pushes the power board 17, the polyurethane insulation pipe is transported long enough to avoid affecting the normal production of the device.

[0075] The acceleration assembly 14 includes an acceleration wheel 141, which is fixedly mounted on the front and rear ends of the conveying roller 11. The surface of the acceleration wheel 141 is transmission-connected with an acceleration connecting belt 142, and the left end of the acceleration connecting belt 142 is transmission-connected with an acceleration wheel 2 143. The diameter of the acceleration wheel 2 143 is one-fourth of the diameter of the acceleration wheel 141.

[0076] When the conveying roller 11 rotates, it can also drive the acceleration wheel 141 to rotate, and then drive the acceleration wheel 2 143 to rotate through the acceleration connecting belt 142, and then drive the fan blade 152 to rotate;

[0077] When the acceleration wheel 141 drives the acceleration wheel 2 143 to rotate, the rotation of the acceleration wheel 2 143 can be accelerated. When the acceleration wheel 141 rotates one circle, the acceleration wheel 2 143 rotates four circles, ensuring that sufficient air can be drawn into the fixed box 151, thereby ensuring that the polyethylene protective layer and the polyurethane insulation layer on the upper layer of the cutting part can be separated from the working steel pipe, thereby ensuring the smooth operation of the device.

[0078] The blow-off assembly 15 includes a fixed box 151, which is fixedly mounted on the top surface of the bottom plate 1, and the inner cavity of the fixed box 151 is movably connected with a fan blade 152, and the left and right sides of the top of the fixed box 151 are respectively fixedly mounted with an outlet pipe 153 and an inlet pipe 154, and the fan blade 152 is fixedly mounted on the rear end of the second acceleration wheel 143;

[0079] When the fan blades 152 rotate, they draw outside air into the fixed box 151 through the air inlet pipe 154, and then eject it through the air outlet pipe 153. After the cutting assembly 9 is separated from the polyurethane insulation pipe, the ejected air can be sprayed toward the polyethylene protective layer and the polyurethane insulation layer above the cutting, so that the polyethylene protective layer and the polyurethane insulation layer on the upper layer of the cutting area are separated from the working steel pipe and fall off.

[0080] The fan blades 152 are driven to rotate by the second acceleration wheel 143 to draw in air, and the potential energy of the rotation of the conveying roller 11 is utilized. There is no need to set up a separate driving component, which reduces the use cost of the device and improves the environmental protection effect of the device.

[0081] The bottom surface of the power board 17 contacts the top of the cam 13, the cooling assembly 2 is located on the left side of the molding assembly 3, the fixing plate 4 is located on the left side of the cooling assembly 2, and one end of the ejection spring 7 is fixedly mounted on the electromagnet 5;

[0082] The working steel pipe is placed on the conveying roller 11 arranged on the right side of the device, and the working steel pipe moves to the left on the conveying roller 11. When the working steel pipe enters the fixed plate 4, a polyethylene protective layer is automatically wrapped on the working steel pipe, and a polyurethane insulation layer is filled between the polyethylene protective layer and the working steel pipe. Finally, the working steel pipe moves to the forming assembly 3, and is spray-cooled through the forming assembly 3, thereby obtaining a polyurethane insulation pipe.

[0083] When producing polyurethane insulation pipes, the polyurethane insulation layer can be automatically filled and the polyethylene protective layer can be automatically injection molded, and the polyurethane insulation pipe can be cooled by the molding component 3 to avoid the risk of high temperature burns and improve the safety of the device.

[0084] The following steps are included:

[0085] When in use, the working steel pipe is placed on the conveying roller 11 arranged on the right side of the device, and the working steel pipe moves to the left on the conveying roller 11;

[0086] When the polyurethane heat preservation pipe contacts the conveying roller 11, the contact with the conveying roller 11 drives the conveying roller 11 to rotate. When the conveying roller 11 rotates, the reduction wheel 121 drives the reduction wheel 2 123 to rotate, and then drives the cam 13 to rotate. When the protrusion on the cam 13 contacts the power board 17, the power board 17 can be driven to move, so that the power board 17 contacts the power terminal 102, and then the circuit-breaking signal in the electromagnet 5 is connected through the fixed wire harness 101. At this time, the electromagnet 5 loses its magnetic force, and the moving plate 6 moves toward the polyurethane heat preservation pipe under the elastic force of the ejection spring 7;

[0087] Then the cutting assembly 9 is driven to move toward the polyurethane insulation pipe, the polyethylene protective layer and the polyurethane insulation layer are cut by the cutting blade 902, and the polyethylene protective layer and the polyurethane insulation layer are cut in the horizontal direction by the cutting blade 903. When the protrusion on the cam 13 rotates away from the power board 17, the power board 17 moves downward, so that the power board 17 is separated from the power terminal 102, and then the circuit-breaking signal in the electromagnet 5 is disconnected, so that the electromagnet 5 is energized to generate magnetism, and then the metal sheet 8 is attracted to move toward the electromagnet 5, and the cutting assembly 9 is pulled away from the polyurethane insulation pipe. At this time, the polyethylene protective layer and the polyurethane insulation layer below after cutting directly fall downward and separate from the working steel pipe;

[0088] When the conveying roller 11 rotates, it can also drive the acceleration wheel 141 to rotate, and then drive the acceleration wheel 143 to rotate through the acceleration connecting belt 142, and then drive the fan blade 152 to rotate. When the fan blade 152 rotates, it draws the outside air into the fixed box 151 through the air inlet pipe 154, and then sprays it out through the air outlet pipe 153. After the cutting component 9 is separated from the polyurethane insulation pipe, the sprayed air can be sprayed to the polyethylene protective layer and the polyurethane insulation layer above the cutting, so that the polyethylene protective layer and the polyurethane insulation layer on the upper layer of the cutting area are separated from the working steel pipe and fall off;

[0089] When the cutting assembly 9 is cutting, the leftward movement of the polyurethane insulation pipe can drive the cutting assembly 9 to move to the left, so that the electromagnet 5 slides to the left in the fixing plate 4, stretching the reset spring 19. After the cutting assembly 9 is separated from the polyurethane insulation pipe, the stretched reset spring 19 moves to the right under the action of elasticity, thereby resetting the cutting assembly 9.

[0090] When it is necessary to control the length of the polyurethane thermal insulation pipe, the cam 13 is pulled forward out of the plug-in shaft 20, and then the cam 13 is rotated. When the cam 13 is inserted on the plug-in shaft 20 and rotated counterclockwise, the contact time between the raised part on the cam 13 and the power board 17 can be increased, and vice versa, the contact time between the raised part on the cam 13 and the power board 17 can be reduced, thereby adjusting the interval of the cutting component 9 on the polyurethane thermal insulation pipe, that is, controlling the length of the polyurethane thermal insulation pipe.

Claims

1. A polyurethane thermal insulation pipe forming device, comprising a base plate (1), a cooling component (2) and a forming component (3), characterized in that: A fixed plate (4) is fixedly installed on the left side of the top surface of the bottom plate (1), an electromagnet (5) is provided on the top of the fixed plate (4), a movable plate (6) is movably connected to the top of the electromagnet (5), a push-out spring (7) is fixedly installed on the bottom end of the movable plate (6), a metal sheet (8) is fixedly installed in the middle of the movable plate (6), a cutting assembly (9) is fixedly installed on one end of the movable plate (6) close to the center of the bottom plate (1), and a power connection assembly (10) is fixedly installed on one end of the electromagnet (5) close to the center of the bottom plate (1). 0), a conveying roller (11) is fixedly mounted on the top of the bottom plate (1), a deceleration assembly (12) is fixedly mounted on both the front and rear ends of the conveying roller (11), a cam (13) is provided at the front end of the deceleration assembly (12), an acceleration assembly (14) is fixedly mounted on both the front and rear ends of the conveying roller (11), a blow-off assembly (15) is fixedly mounted on the top surface of the bottom plate (1), a support plate (16) is fixedly mounted on the top surface of the bottom plate (1), and a power connection plate (17) is movably connected to the top of the support plate (16); A support frame (18) is fixedly mounted on the right side of the fixed plate (4), a return spring (19) is fixedly mounted on the left side of the top of the support frame (18), and the left end of the return spring (19) is fixedly mounted on the right side of the electromagnet (5); The middle part of the cam (13) is movably connected with a plug-in shaft (20), and the plug-in shaft (20) is connected to the cam (13); The cutting assembly (9) comprises a fixed frame (901), the fixed frame (901) being fixedly mounted on one end of the movable plate (6) close to the center of the bottom plate (1), the left and right ends of the fixed frame (901) being fixedly mounted with a circular cutting blade (902), and the inner wall of the fixed frame (901) being fixedly mounted with a cutting blade (903); The power connection assembly (10) comprises a fixed wiring harness (101), the fixed wiring harness (101) being fixedly mounted on one end of the electromagnet (5) close to the center of the bottom plate (1), a power connection terminal (102) being fixedly mounted on the right side of the bottom end of the fixed wiring harness (101), the power connection terminal (102) being electrically connected to the electromagnet (5) via the fixed wiring harness (101); The bottom surface of the power connection plate (17) contacts the top end of the cam (13), the cooling assembly (2) is located on the left side of the molding assembly (3), the fixing plate (4) is located on the left side of the cooling assembly (2), and one end of the ejection spring (7) is fixedly mounted on the electromagnet (5).

2. The polyurethane thermal insulation pipe forming equipment according to claim 1, characterized in that: The deceleration assembly (12) comprises a deceleration wheel (121), the deceleration wheel (121) being fixedly mounted on the front and rear ends of the conveying roller (11), the surface of the deceleration wheel (121) being transmission-connected with a deceleration connecting belt (122), the left end of the deceleration connecting belt (122) being transmission-connected with a deceleration wheel (123), the deceleration wheel (123) being movably connected to the top surface of the bottom plate (1), the deceleration wheel (123) being movably sleeved on the rear side of the cam (13), the diameter of the deceleration wheel (121) being one third of the diameter of the deceleration wheel (123), and the front side surface of the deceleration wheel (123) being fixedly mounted on the rear end of the plug-in shaft (20).

3. The polyurethane thermal insulation pipe forming equipment according to claim 1, characterized in that: The acceleration assembly (14) comprises an acceleration wheel (141), the acceleration wheel (141) being fixedly mounted on the front and rear ends of the conveying roller (11), the surface of the acceleration wheel (141) being transmission-connected with an acceleration connection belt (142), the left end of the acceleration connection belt (142) being transmission-connected with an acceleration wheel (143), and the diameter of the acceleration wheel (143) being one quarter of the diameter of the acceleration wheel (141).

4. The polyurethane thermal insulation pipe forming equipment according to claim 1, characterized in that: The blow-off assembly (15) comprises a fixed box (151), the fixed box (151) is fixedly mounted on the top surface of the bottom plate (1), the inner cavity of the fixed box (151) is movably connected with a fan blade (152), an air outlet pipe (153) and an air inlet pipe (154) are fixedly mounted on the left and right sides of the top of the fixed box (151), and the fan blade (152) is fixedly mounted on the rear end of the second acceleration wheel (143).

5. The molding process of the polyurethane thermal insulation pipe molding equipment according to any one of claims 1 to 4, characterized in that: The following steps are included When in use, the working steel pipe is placed on a conveying roller (11) arranged on the right side of the device, and the working steel pipe moves to the left on the conveying roller (11); When the polyurethane heat-insulating pipe contacts the conveying roller (11), the contact with the conveying roller (11) drives the conveying roller (11) to rotate. When the conveying roller (11) rotates, the first reduction wheel (121) drives the second reduction wheel (123) to rotate, thereby driving the cam (13) to rotate. When the protrusion on the cam (13) contacts the power connection plate (17), the power connection plate (17) can be driven to move upward, so that the power connection plate (17) contacts the power connection terminal (102), and then the circuit-breaking signal in the electromagnet (5) is connected through the fixed wire harness (101). At this time, the electromagnet (5) loses its magnetic force, and the movable plate (6) moves toward the polyurethane heat-insulating pipe under the elastic force of the ejection spring (7); Then, the cutting assembly (9) is driven to move toward the polyurethane insulation pipe, and the polyethylene protective layer and the polyurethane insulation layer are cut in a circular manner by the circular cutting blade (902), and the polyethylene protective layer and the polyurethane insulation layer are cut in a horizontal direction by the cutting blade (903). When the protrusion on the cam (13) rotates away from the power board (17), the power board (17) moves downward, thereby separating the power board (17) from the power terminal (102), thereby disconnecting the circuit-breaking signal in the electromagnet (5), so that the electromagnet (5) is energized to generate magnetism, and then the metal sheet (8) is attracted to move toward the electromagnet (5), and the cutting assembly (9) is pulled away from the polyurethane insulation pipe. At this time, the polyethylene protective layer and the polyurethane insulation layer below after cutting directly fall downward and separate from the working steel pipe; When the conveying roller (11) rotates, it can also drive the first acceleration wheel (141) to rotate, and then drive the second acceleration wheel (143) to rotate through the acceleration connecting belt (142), and then drive the fan blade (152) to rotate. When the fan blade (152) rotates, it draws the outside air into the fixed box (151) through the air inlet pipe (154), and then sprays it out through the air outlet pipe (153). After the cutting component (9) is separated from the polyurethane thermal insulation pipe, the sprayed air can be sprayed to the polyethylene protective layer and the polyurethane thermal insulation layer above the cutting, so that the polyethylene protective layer and the polyurethane thermal insulation layer on the upper layer of the cutting area are separated from the working steel pipe and fall off; When the cutting assembly (9) is cutting, the polyurethane thermal insulation pipe moves to the left, which can drive the cutting assembly (9) to move to the left, causing the electromagnet (5) to slide to the left in the fixing plate (4), thereby stretching the reset spring (19). After the cutting assembly (9) is separated from the polyurethane thermal insulation pipe, the stretched reset spring (19) moves to the right under the action of elasticity, thereby achieving the reset of the cutting assembly (9); When the length of the polyurethane thermal insulation pipe needs to be controlled, the cam (13) is pulled forward out of the plug-in shaft (20), and then the cam (13) is rotated and inserted into the plug-in shaft (20). When the cam (13) is rotated counterclockwise, the contact time between the protrusion on the cam (13) and the power connection plate (17) can be increased, and vice versa, the contact time between the protrusion on the cam (13) and the power connection plate (17) can be reduced, thereby adjusting the interval of the cutting component (9) cutting the polyurethane thermal insulation pipe, that is, controlling the length of the polyurethane thermal insulation pipe.

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