Automatic feeding device for polyurethane heat preservation pipe production

Abstract

This utility model discloses an automatic feeding device for polyurethane insulation pipe production, relating to the field of polyurethane insulation pipe production technology. The utility model includes a base plate with supporting rollers on both sides of its top surface. A vertical frame is positioned directly above the base plate, and a first electric cylinder is inserted through the center of the top surface of the vertical frame. A lifting frame is fixedly connected to the output shaft of the first electric cylinder, and an auxiliary roller is provided on the bottom surface of the lifting frame. A toothed plate is fixedly connected to the center of the top surface of the base plate. A movable seat is provided between the base plate and the lifting frame, and a housing is slidably connected to the top surface of the movable seat. A second electric cylinder is embedded in the top surface of the housing, and a lifting plate is fixedly connected to the output shaft of the second electric cylinder. Guide plates are fixedly connected to both sides of the bottom surface of the movable seat, and a horizontal shaft is rotatably connected to the side wall of the guide plate. A worm gear and a gear are fixedly connected to the side wall of the horizontal shaft. This utility model can automatically feed polyurethane insulation pipes.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane insulation pipe production technology, specifically to an automatic feeding device for polyurethane insulation pipe production. Background Technology

[0002] The production of polyurethane insulated pipes mainly includes steel pipe processing, polyurethane foaming, outer protective layer installation, and quality inspection. During the production process, the foamed pipe sections need to be removed from the mold and transported to subsequent workstations. Traditionally, this relies on overhead cranes or manual roller handling. These methods have some drawbacks. Hoisting requires frequent hooking and unhooking, which is troublesome, while manual roller handling is time-consuming and prone to accidents such as crushing and twisting injuries, posing certain handling risks. To address these issues, this utility model proposes an automatic feeding device for polyurethane insulated pipe production. Utility Model Content

[0003] To address the problem of cumbersome material feeding during the production of polyurethane insulation pipes, the purpose of this invention is to provide an automatic material feeding device for polyurethane insulation pipe production.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: an automatic feeding device for polyurethane insulation pipe production, comprising a base plate, supporting rollers on both sides of the top surface of the base plate, a vertical frame on the top of the base plate, a first electric cylinder inserted in the middle of the top surface of the vertical frame, a lifting frame fixedly connected to the output shaft end of the first electric cylinder, an auxiliary roller on the bottom surface of the lifting frame, a toothed plate fixedly connected to the middle of the top surface of the base plate, a movable seat between the base plate and the lifting frame, a housing slidably connected to the top surface of the movable seat, a second electric cylinder embedded in the top surface of the housing, a lifting plate fixedly connected to the output shaft end of the second electric cylinder, guide plates fixedly connected to both sides of the bottom surface of the movable seat, a horizontal shaft rotatably connected to the side wall of the guide plate, a worm gear and a gear fixedly connected to the side wall of the horizontal shaft, the gear corresponding to and meshing with the toothed plate.

[0005] Preferably, support plates are fixedly connected to both sides of the top surface of the base plate, the supporting roller is rotatably connected to the support plates, the bottom end of the upright is fixedly connected to the side wall of the base plate, the auxiliary roller and the supporting roller are located on the same axis, the support plates are used to support the rotation of the supporting roller, and a tube is provided on one side of the base plate. The tube is a foamed polyurethane insulation pipe. When it is necessary to remove the foamed pipe section from the mold and transfer it to the subsequent work station, this device is placed at the mold removal outlet, so that the supporting roller corresponds to the tube, allowing the tube to move on the supporting roller. The top surface of the movable seat is provided with a groove, and the interior of the movable seat... A first motor is provided, and a double-ended screw is fixedly connected to the output shaft of the first motor. A threaded cylinder is threaded onto the side wall of the double-ended screw. The bottom surface of the housing is fixedly connected to the bottom surface of the threaded cylinder, and the threaded cylinder is located in a groove. The outer shell of the first motor is fixedly connected to the inner wall of the movable seat. When the first motor is started, the double-ended screw rotates under the action of the output shaft of the first motor. Through the cooperation between the double-ended screw and the threaded cylinder, and the cooperation of the groove, the two housings can be translated to adjust the distance between the two lifting plates, thereby improving the lifting stability when transporting tubes of different lengths.

[0006] Preferably, the bottom surface of the guide plate is provided with a guide groove, and the top surface of the bottom plate and both sides of the toothed plate are fixedly connected with slide rails. The guide groove corresponds to and is slidably connected to the slide rails. A second motor is provided on one side of the guide plate, and a worm is fixedly connected to the output shaft end of the second motor. The worm corresponds to and meshes with the worm wheel. A base is provided on the side wall of the second motor, and the base is fixedly connected to the side wall of the guide plate. When the tube is moved, the second motor is started, and the worm rotates under the action of the output shaft of the second motor. Through the mutual meshing of the worm and the worm wheel, the horizontal shaft can be rotated, which in turn can make the gear rotate. Through the mutual meshing of the gear and the toothed plate, and with the cooperation of the guide plate and the slide rails, the movable seat can be moved, and the tube can be moved by the lifting plate.

[0007] Compared with the prior art, the advantages of this utility model are: it can automatically feed polyurethane insulation pipes without relying on cranes or manual roller handling, thereby improving the feeding speed and eliminating the risks of manual handling. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a schematic diagram showing the cooperation between the lifting plate and the lifting frame of this utility model.

[0011] Figure 3 This is a schematic diagram of the internal structure of the movable seat of this utility model.

[0012] Figure 4 This is an enlarged view of section A of this utility model.

[0013] In the diagram: 1. Base plate; 2. Support plate; 3. Supporting roller; 4. Toothed plate; 5. Slide rail; 6. Upright frame; 7. First electric cylinder; 8. Lifting frame; 9. Auxiliary roller; 10. Movable seat; 11. Guide plate; 12. Groove; 13. First motor; 14. Double-ended screw; 15. Threaded cylinder; 16. Housing; 17. Second electric cylinder; 18. Lifting plate; 19. Second motor; 20. Base; 21. Worm gear; 22. Worm wheel; 23. Horizontal shaft; 24. Gear; 25. Tube body. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example: Figure 1-4 As shown, this utility model provides an automatic feeding device for the production of polyurethane insulation pipes, including a base plate 1. Supporting wheels 3 are provided on both sides of the top surface of the base plate 1. A vertical frame 6 is provided directly above the base plate 1. A first electric cylinder 7 is inserted through the middle of the top surface of the vertical frame 6. A lifting frame 8 is fixedly connected to the output shaft end of the first electric cylinder 7. An auxiliary roller 9 is provided on the bottom surface of the lifting frame 8. A toothed plate 4 is fixedly connected to the middle of the top surface of the base plate 1. A movable seat 10 is provided between the base plate 1 and the lifting frame 8. A housing 16 is slidably connected to the top surface of the movable seat 10. A second electric cylinder 17 is embedded in the top surface of the housing 16. A lifting plate 18 is fixedly connected to the output shaft end of the second electric cylinder 17. Guide plates 11 are fixedly connected to both sides of the bottom surface of the movable seat 10. A horizontal shaft 23 is rotatably connected through the side wall of the guide plate 11. A worm gear 22 and a gear 24 are fixedly connected to the side wall of the horizontal shaft 23. The gear 24 corresponds to and meshes with the toothed plate 4.

[0016] Support plates 2 are fixedly connected to both sides of the top surface of the base plate 1. Support rollers 3 are rotatably connected to support plates 2. The bottom end of the upright frame 6 is fixedly connected to the side wall of the base plate 1. The auxiliary rollers 9 and support rollers 3 are located on the same axis.

[0017] By adopting the above technical solution, the support plate 2 is used to support the rotation of the support wheel 3. A tube body 25 is provided on one side of the base plate 1. The tube body 25 is a polyurethane insulation pipe after foaming. When it is necessary to remove the foamed pipe section from the mold and transfer it to the subsequent work station, this device is placed at the mold removal outlet, so that the support wheel 3 corresponds to the tube body 25, so that the tube body 25 can move on the support wheel 3.

[0018] Optionally, the first electric cylinder 7 can drive the lifting frame 8 to move up and down vertically to adjust the distance between the auxiliary roller 9 and the supporting roller 3, adapting to polyurethane insulation pipes (pipe bodies 25) of different diameters, and ensuring the limiting effect of the auxiliary roller 9 on the pipe body 25. The preset distance between the bottom surface of the auxiliary roller 9 and the top of the pipe body 25 is set to 5-10mm. This range is determined based on experimental data of the pipe body 25 material (compressive strength of polyurethane foam layer ≥0.3MPa): when the distance is <5mm, the top of the pipe body 25 is prone to plastic deformation due to compression; when the distance is >10mm, the pipe body 25 will generate radial runout during the transfer process. For a pipe body 25 with a diameter D (unit: mm), the distance h (unit: mm) can be calculated by the formula h=0.05D+2 to ensure a balance between the limiting effect and the prevention of deformation.

[0019] Optionally, an adjustable stop (not shown in the figure) is fixedly connected to one end of the outer wall of the support plate 2 near the moving direction of the tube body 25. The height of the stop is not lower than the top surface of the support wheel 3, and the stop is connected to the support plate 2 by a long hole bolt. The horizontal adjustment range is 0-150mm. The end face of the stop that contacts the tube body 25 is machined into an arc-shaped groove with a radius R=D / 2 (D is the diameter of the tube body 25) to fit the outer wall of the tube body 25 for precise positioning and to avoid axial displacement of the tube body 25 during the transfer process.

[0020] The top surface of the movable seat 10 is provided with a groove 12. The interior of the movable seat 10 is provided with a first motor 13. The output shaft end of the first motor 13 is fixedly connected to a double-ended screw 14. The side wall of the double-ended screw 14 is threaded with a threaded cylinder 15. The bottom surface of the housing 16 is fixedly connected to the bottom surface of the threaded cylinder 15. The threaded cylinder 15 is located in the groove 12.

[0021] By adopting the above technical solution, the outer shell of the first motor 13 is fixedly connected to the inner wall of the movable seat 10. When the first motor 13 is started, the double-headed screw 14 rotates under the action of the output shaft of the first motor 13. Through the mutual cooperation between the double-headed screw 14 and the threaded cylinder 15, and the cooperation of the groove 12, the two shells 16 can be translated to adjust the distance between the two lifting plates 18, so as to improve the lifting stability when transporting tubes 25 of different lengths.

[0022] The first motor 13 is a 57BLDC brushless motor with a rated power of 300W and a speed range of 100-1500rpm. The speed is controlled by pulse width modulation (PWM) to ensure that the rotational angular velocity of the double-headed screw 14 matches the length of the tube 25: when the length of the tube 25 is 3-6m, the speed is set to 300-500rpm, and the adjustment time is controlled within 10-15 seconds.

[0023] The bottom surface of the guide plate 11 is provided with a guide groove. The top surface of the base plate 1 and both sides of the toothed plate 4 are fixedly connected with slide rails 5. The guide groove corresponds to and is slidably connected with the slide rails 5. A second motor 19 is provided on one side of the guide plate 11. A worm 21 is fixedly connected to the output shaft end of the second motor 19. The worm 21 corresponds to and meshes with the worm wheel 22. A base 20 is provided on the side wall of the second motor 19. The base 20 is fixedly connected to the side wall of the guide plate 11.

[0024] By adopting the above technical solution, when the tube body 25 is transferred, the second motor 19 is started, and the worm 21 rotates under the action of the output shaft of the second motor 19. Through the meshing of the worm 21 and the worm wheel 22, the horizontal shaft 23 can be rotated, which in turn causes the gear 24 to rotate. Through the meshing of the gear 24 and the toothed plate 4, and with the cooperation of the guide plate 11 and the slide rail 5, the movable seat 10 can be moved, which in turn drives the tube body 25 to move through the lifting plate 18.

[0025] Gear 24 is a spur gear with a module of 2.5 and 20 teeth. The tooth pitch of the tooth plate 4 matches that of gear 24. The length is 1.2 times the maximum travel of the movable seat 10 (i.e., the travel distance of the tube body 25 + 200mm safety margin). The meshing clearance between gear 24 and tooth plate 4 is controlled at 0.15-0.2mm. Wear resistance is improved by hardening the tooth surface (hardness HRC58-62).

[0026] Working principle: When using this utility model, when it is necessary to remove the foamed pipe section from the mold and transfer it to the subsequent work station, this device is placed at the mold removal outlet, and the supporting roller 3 is aligned with the pipe body 25 so that the pipe body 25 is pushed on the two supporting rollers 3. Before starting the second electric cylinder 17, the system detects the contact pressure of the tube 25 through a pressure sensor (model: PT124G-111) installed on the top surface of the lifting plate 18. When the pressure reaches 0.5-1.0N, a time delay relay is triggered (delay time 0.5 seconds), and then the second motor 19 is started to prevent the tube 25 from starting to move before it is stably lifted. Proximity switches (model: E2E-X10MY1) are installed on both sides of the movable seat 10. When the movable seat 10 is detected to have moved to the limit position, the power supply of the second motor 19 is automatically cut off and the brake is triggered.

[0027] Next, the first motor 13 is started, and the double-headed screw 14 rotates under the action of the output shaft of the first motor 13. Through the cooperation between the double-headed screw 14 and the threaded cylinder 15, and the cooperation of the groove 12, the two housings 16 can be translated to adjust the distance between the two lifting plates 18, so as to improve the lifting stability when transporting tubes 25 of different lengths. According to the diameter of the polyurethane insulation tube (tube 25) to be transported, the output shaft of the first electric cylinder 7 is controlled to extend and retract, driving the lifting frame 8 to rise and fall synchronously until the bottom surface of the auxiliary roller 9 matches the preset distance (which can be set to 5-10mm to avoid tube deformation by squeezing) at the top of the tube 25. Then the first electric cylinder 7 is turned off to complete the height calibration of the auxiliary roller. Then, the second electric cylinder 17 is activated to raise the lifting plate 18. The top surface of the lifting plate 18 is machined with an arc-shaped groove with a radius R=D / 2 (D is the diameter of the tube 25). A 3mm thick nitrile rubber pad (Shore hardness 60±5A) is embedded in the groove to increase friction and prevent the tube 25 from sliding, thereby lifting the tube 25 until the top of the tube 25 contacts the bottom surface of the auxiliary roller 9. The lifting stroke S (unit: mm) of the lifting plate 18 is calculated by the formula S=(D / 2)+h - r (where h is the distance between the auxiliary rollers and r is the radius of the support roller 3). The minimum stroke must be 10mm lower than the top surface of the support roller 3, and the maximum stroke must not exceed the lower limit of the lifting frame 8. The position is fed back in real time by the magnetostrictive displacement sensor (accuracy ±0.1mm) built into the second electric cylinder 17. Next, before starting the second motor 19, the pressure sensor (model PT124G-111) built into the lifting plate 18 detects the contact pressure of the tube body 25. When the pressure reaches 0.5-1.0N, a time delay relay is triggered (delay 0.5 seconds) to ensure that the tube body 25 is stably lifted. Then, the worm gear 21 rotates under the action of the output shaft of the second motor 19. Through the meshing of the worm gear 21 and the worm wheel 22 (transmission ratio 1:20), the horizontal shaft 23 can be rotated, which in turn causes the gear 24 to rotate. Through the meshing of gear 24 and toothed plate 4, and the cooperation of guide plate 11 and slide rail 5 (slide rail 5 is model HGR20, with a clearance of 0.1-0.3mm and a parallelism tolerance of ≤0.1mm / m), the movable seat 10 can move, with a moving speed set to 0.5-1m / s (automatically matched according to the weight of tube 25: 1m / s for weight <500kg, and 0.5m / s for weight ≥500kg). This allows the tube 25 to move via the lifting plate 18. Figure 1 As shown, when the lifting plate 18 moves to the far right, the second electric cylinder 17 is controlled to lower the lifting plate 18, so that the lifting plate 18 is separated from the tube body 25. The tube body 25 can be supported by the support roller 3. At this time, the tube body 25 rolls on the support roller 3 until its end face contacts the stop on the support plate 2. The stop restricts the tube body 25 from moving further, ensuring that the tube body 25 is always in the area directly above the lifting plate 18, providing positioning for accurate reception after the lifting plate 18 returns. Then, the second motor 19 is reversed to move the lifting plate 18 to the far left. The system monitors the operating current of the second motor 19 in real time. When the current exceeds 1.5 times the rated value (overload protection is achieved through a JR36-20 thermal relay), the power is immediately cut off and an emergency stop is triggered to prevent overload damage. Then, the second electric cylinder 17 is controlled again to raise the lifting plate 18 to lift the tube 25, and then it moves to the right. This operation is repeated to complete the automatic feeding operation.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The first motor 13 is a 57BLDC brushless motor (rated power 300W, speed 100-1500rpm), the second motor 19 is a 42BYG stepper motor (holding torque 0.8N·m, step angle 1.8°), the first electric cylinder 7 and the second electric cylinder 17 are DTZ300 series (thrust 5000N, stroke accuracy ±0.5mm, response time ≤0.2s). The circuit connection adopts a PLC controller (model S7-1200) to realize logic control. The specific wiring diagram refers to GB / T 5226.1-2019 standard for electrical equipment of industrial machinery, which will not be described in detail here.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatic feeding device for the production of polyurethane insulation pipes, comprising a base plate (1), characterized in that: Supporting wheels (3) are provided on both sides of the top surface of the base plate (1). A vertical frame (6) is provided directly above the base plate (1). A first electric cylinder (7) is inserted through the middle of the top surface of the vertical frame (6). A lifting frame (8) is fixedly connected to the output shaft end of the first electric cylinder (7). An auxiliary roller (9) is provided on the bottom surface of the lifting frame (8). A toothed plate (4) is fixedly connected to the middle of the top surface of the base plate (1). A movable seat (10) is provided between the base plate (1) and the lifting frame (8). The top surface of the movable seat (10) is slidably connected to a housing (16), and a second electric cylinder (17) is embedded in the top surface of the housing (16). A lifting plate (18) is fixedly connected to the output shaft end of the second electric cylinder (17). Guide plates (11) are fixedly connected to both sides of the bottom surface of the movable seat (10). A horizontal shaft (23) is rotatably connected to the side wall of the guide plate (11). A worm gear (22) and a gear (24) are fixedly connected to the side wall of the horizontal shaft (23). The gear (24) corresponds to and meshes with the toothed plate (4).

2. The automatic feeding device for polyurethane insulation pipe production as described in claim 1, characterized in that, The bottom plate (1) has support plates (2) fixedly connected to both sides of its top surface, and the supporting wheel (3) is rotatably connected to the support plate (2).

3. The automatic feeding device for polyurethane insulation pipe production as described in claim 1, characterized in that, The bottom end of the support frame (6) is fixedly connected to the side wall of the base plate (1), and the auxiliary roller (9) and the supporting roller (3) are located on the same axis.

4. The automatic feeding device for polyurethane insulation pipe production as described in claim 1, characterized in that, The top surface of the movable seat (10) is provided with a groove (12), and the interior of the movable seat (10) is provided with a first motor (13), and the output shaft end of the first motor (13) is fixedly connected with a double-headed screw (14).

5. The automatic feeding device for polyurethane insulation pipe production as described in claim 4, characterized in that, The double-ended screw (14) has a threaded sleeve (15) threaded on its side wall. The bottom surface of the housing (16) is fixedly connected to the bottom surface of the threaded sleeve (15). The threaded sleeve (15) is located in the groove (12).

6. The automatic feeding device for polyurethane insulation pipe production as described in claim 1, characterized in that, The bottom surface of the guide plate (11) is provided with a guide groove, and the top surface of the base plate (1) and both sides of the toothed plate (4) are fixedly connected with slide rails (5). The guide groove corresponds to and is slidably connected with the slide rails (5).

7. The automatic feeding device for polyurethane insulation pipe production as described in claim 1, characterized in that, A second motor (19) is provided on one side of the guide plate (11). A worm (21) is fixedly connected to the output shaft end of the second motor (19). The worm (21) corresponds to and meshes with the worm wheel (22).

8. The automatic feeding device for polyurethane insulation pipe production as described in claim 7, characterized in that, The second motor (19) has a base (20) on its side wall, and the base (20) is fixedly connected to the side wall of the guide plate (11).

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