Uniform foaming device and method for rubber thermal insulation pipe production

Abstract

The invention discloses a uniform foaming device for rubber thermal insulation pipe production and a method thereof, and particularly relates to the technical field of thermal insulation pipe production, the uniform foaming device comprises a workbench and further comprises two pipe clamps which are symmetrically arranged on the workbench, an outer pipe is jointly limited in the two pipe clamps, and an inner pipe is concentrically arranged in the outer pipe in a penetrating mode. According to the foaming piece, multi-point conveying of foaming raw materials is completed in a rotating mode through the dispersing assembly, the problem that part of positions are prone to being lost when the foaming raw materials are conveyed at a single position is solved, meanwhile, the multiple triggering pieces on the stirring assembly are driven to complete synchronous rotation, the foaming raw materials introduced into the annular cavity can be stirred evenly, and the foaming efficiency is improved. According to the foaming machine, bubbles in foaming raw materials can be broken, the foaming raw materials are more compact, the triggering piece can continuously shake up and down, the bubbles in the foaming raw materials can be more uniformly distributed, the defects of a large number of holes and gaps of finished products are avoided, the product quality is improved, and the product performance is enhanced.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation pipe production technology, specifically to a uniform foaming device and method for producing rubber thermal insulation pipes. Background Technology

[0002] Insulated pipes are suitable for transporting various media. They are widely used in centralized heating, cooling and hot oil transportation, as well as in insulation and cold preservation projects in industries such as greenhouses, cold storage, coal mines, petroleum, and chemical industries. Therefore, insulation treatment is required during pipe production. Specifically, foaming is carried out between the inner and outer pipes to form an insulation pipe, thereby improving the insulation performance of the pipe. Currently, when foaming the insulation pipe, holes are made in the wall of the plastic outer sheath, and then foaming is carried out directly into the interlayer between the plastic outer sheath and the steel pipe through a foaming machine. Uneven foaming in the interlayer affects the quality of the pipe.

[0003] Referring to the uniform foaming device for thermal insulation pipes disclosed in patent application CN102962940A, the foaming device uses a traction machine to drive the baffle to move gradually from front to back, so that the foaming machine can foam. The foam density is uniform. A baffle is set between the plastic outer sheath and the steel pipe, eliminating the need for support brackets, saving on brackets, ensuring the concentricity of the plastic outer sheath and the steel pipe, reducing the labor intensity of workers, and improving work efficiency.

[0004] The aforementioned foaming device can complete continuous foaming work by moving the baffle through a traction machine and providing foaming. However, the foaming device only uses a mixing tube for single-position feeding operation, which causes a large amount of foaming raw material to accumulate near the mixing tube, affecting the uniformity of foaming. The side away from the mixing tube is prone to missing material, affecting the foaming quality and reducing the insulation performance of the insulation pipe. Meanwhile, the aforementioned foaming device does not process the foaming raw material, so the uniformity of the foaming raw material cannot be controlled, and the bubble state of the foaming raw material cannot be controlled. Large bubbles are very likely to exist in the foaming raw material, resulting in a large number of voids after subsequent molding. This reduces the performance of the insulation pipe, increases the amount of scrap, and raises production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a uniform foaming device and method for producing rubber insulation pipes, so as to solve the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0007] This invention relates to a uniform foaming device for the production of rubber insulation pipes, comprising a workbench and further comprising: Two pipe clamps are symmetrically arranged on the workbench, and an outer pipe is concentrically inserted inside the two pipe clamps. Supports are symmetrically installed on both sides of the upper surface of the workbench. A foaming component is slidably disposed in the gap formed between the outer tube and the inner tube. The foaming component includes a positioning ring assembly and a dispersing assembly. The dispersing assembly is used to feed the foaming material into the foaming area in a multi-point conveying manner. The positioning ring assembly provides dynamic limiting operation for the dispersing assembly. A pulling mechanism is installed on one side of the worktable surface to pull the positioning ring assembly of the foaming component to move the foaming work. A toggle component is installed within the dispersion component to homogenize the foaming material remaining therein. The toggle component includes a sensing element and multiple triggering elements. The multiple triggering elements are arranged in a circular array within the dispersion component to control the elimination of air bubbles in the foaming material within the dispersion component through reciprocating shaking. The sensing element is installed within the dispersion component to control the switching of the shaking frequency of the multiple triggering elements. Each trigger includes two side plates, one of which is connected to the dispersion component. Multiple thin metal rods are evenly distributed between the two side plates. A trigger head is mounted on the top of both side plates. The trigger head slides into contact with the sensing element to complete the vibration triggering operation.

[0008] Furthermore, the positioning ring assembly includes: The annular component is located between the outer tube and the inner tube, and three notches are arranged in a circular array around the annular component; The limiting unit is set in three notches. Multiple limiting units are used to frictionally restrict the movement of the foamed part. Each limiting unit includes a permanent magnet that is slidably installed in the notch. Slides that cooperate with the permanent magnet are symmetrically opened on both sides of the inner wall of the notch. A friction plate is detachably fixed on the top of the permanent magnet. A return spring is installed in the slide.

[0009] Furthermore, the positioning ring assembly also includes: An electromagnet, located at the bottom of each notch, is used to control the movement of the permanent magnet.

[0010] Furthermore, the distributed component includes: An annular cavity is located on one side of the annular component. A dispersing disc is rotatably mounted at the front end of the annular cavity. The dispersing disc has multiple channels communicating with the inside of the annular cavity. Multiple connecting rods are located on the back of the annular cavity, and the tails of the multiple connecting rods slide through the annular component. Multiple detection springs are fitted onto the outside of multiple connecting rods. A sliding rheostat is installed on one side of one of the connecting rods on the annular part, and the control end of the sliding rheostat is connected to one of the connecting rods. At the same time, the electromagnets in the three notches are electrically connected to the sliding rheostat. A feed pipe is installed on the back of the annular cavity. A guide component is installed in each channel and is detachably and fixedly connected to the channel. The guide component is used to guide and break the foaming material delivered from the channel. The sliding sleeve is integrally mounted on the dispersing disc, and the dispersing disc and the sliding sleeve are concentrically positioned.

[0011] Furthermore, the distributed component also includes: A gear ring is fixedly sleeved on a sliding sleeve. A geared motor is installed on the annular part of the positioning ring assembly. A drive gear is installed at the output end of the geared motor. Two pull ring seats are symmetrically and detachably fixedly installed on the side wall of the annular part of the positioning ring assembly.

[0012] Furthermore, the sensing element includes: A sliding ring is slidably mounted on the annular cavity of the dispersion component. Multiple trigger rods are arranged in a circular array on the back of the sliding ring, and each trigger rod is slidably sealed through the back of the annular cavity. Multiple arc-shaped triggers are arranged in a circular array on the back of the annular cavity, and multiple arc-shaped sliding grooves are arranged in a circular array on the back of the annular cavity. The multiple arc-shaped triggers are correspondingly slidably engaged in the arc-shaped sliding grooves. Each arc-shaped trigger has an arc-shaped inclined groove on its outer surface. A sliding block is slidably engaged in the arc-shaped inclined groove, and the sliding block is rotatably connected to the corresponding trigger rod. The inner surface of each arc-shaped trigger is in sliding frictional contact with the outer surface of the sliding sleeve. Multiple first semicircular blocks are arranged in a circular array on the inner wall of the sliding ring, forming a first undulating region within the sliding ring. Multiple second semicircular blocks are arranged in a circular array on the inner wall of the sliding ring, forming a second undulating region within the sliding ring.

[0013] Furthermore, the trigger also includes: The lifting area is located on the inner wall of the dispersing component. There are multiple lifting areas, which are installed in a circular array inside the dispersing component. Each lifting area has a lifting block that is slidably installed in it. The lifting block is detachably and fixedly connected to one of the side plates, and a strong spring is installed in the lifting area.

[0014] Furthermore, both support members include: A fixed seat is fixedly installed on the workbench. A movable seat is slidably engaged on the upper surface of the workbench on one side of the fixed seat. A circular plug is installed on the movable seat facing the inner tube. A hydraulic cylinder is fixedly installed on the fixed seat. The circular plug is used to support and limit the movement of the inner tube.

[0015] Furthermore, the traction mechanism includes: The traction machine is set on the upper surface of the workbench. There are two traction machines, which are arranged symmetrically. The traction machine has a pulling steel rope wound on it and connected to the pull ring seat.

[0016] The present invention also provides a uniform foaming method for the production of rubber insulation pipes, the foaming method specifically including the following steps: Step 1: First, put the outer tube over the inner tube, then control the two support members to fix the inner tube, and then control the two pipe clamps to fix the outer tube. Step 2: Then control the foaming component to enter between the outer tube and the inner tube until it reaches the predetermined foaming position and waits for instructions. After that, control the movement of the foaming component, and the foaming material is evenly delivered through the foaming component to carry out the foaming work. Step 3: Then control the dispersion component to convey the foaming material to multiple points by rotating it, while triggering multiple triggers on the toggle component to rotate synchronously, and using the triggers to break the air bubbles in the foaming material. Step 4: Then, by switching the contact between the first undulating area and the second undulating area and the trigger, the trigger is controlled to vibrate up and down at different frequencies, thereby controlling the rapid rupture of air bubbles in the foaming material. Step 5: Simultaneously control the pulling mechanism to drive the foaming component forward at a constant speed between the outer tube and the inner tube, and control the pulling mechanism according to the foaming speed requirements.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses a foaming component to perform uniform foaming between the outer tube and the inner tube. The foaming component uses a dispersing component to transport the foaming material to multiple points by rotating, so that the foaming material is evenly transported between the outer tube and the inner tube, which improves the uniformity of foaming and avoids the problem of partial missing parts when the foaming material is transported at a single position. 2. The present invention adds a toggle component to the dispersing component. While the dispersing component rotates and feeds the material, it drives multiple triggers on the toggle component to rotate synchronously. This can evenly toggle the foaming material introduced into the annular cavity. At the same time, the triggers can break the air bubbles in the foaming material, making the foaming material denser and avoiding the problem of hollowness. Furthermore, the triggers can continuously shake up and down, which can promote a more uniform distribution of air bubbles in the foaming material, avoid defects such as a large number of holes and voids in the finished product, and improve product quality. 3. The present invention has a dispersing component that leads out the foaming material through multiple channels on the dispersing disc, so that the foaming material can enter between the outer and inner tubes in a multi-point conveying manner. Furthermore, the channels are equipped with guides that can intervene in the foaming material through the action of multiple threads, causing the bubbles in the foaming material to burst. At the same time, the reduction motor is started, so that the dispersing component can achieve rotational conveying on the basis of multi-point conveying, further reducing the dead angle of conveying.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 This is the overall front view of the invention; Figure 2 This is a schematic diagram of the outer tube and inner tube of the present invention installed on the workbench; Figure 3 This is a schematic diagram of the foaming component of the present invention installed between the outer tube and the inner tube; Figure 4 This is a schematic diagram showing the connection between the foaming component and the pulling mechanism of the present invention; Figure 5 This is a schematic diagram of the foaming component of the present invention; Figure 6 This is a schematic diagram showing the distribution of the annular cavity and the dispersion disk in this invention; Figure 7 This is a schematic diagram of the meshing of the drive gear and the gear ring of the present invention; Figure 8 This is a schematic diagram showing the separation of the annular cavity and the dispersion disk in this invention; Figure 9 This is a schematic diagram of the positioning ring assembly structure of the present invention; Figure 10 This is a schematic diagram of the structure of the distributed component of the present invention; Figure 11 This is a schematic diagram showing the distribution of the trigger elements within the annular cavity according to the present invention; Figure 12 This is a schematic diagram of the trigger structure of the present invention; Figure 13 This is a schematic diagram showing the distribution of the trigger element and the first and second semicircular blocks of the present invention. Figure 14 This is a schematic diagram showing the distribution of the sliding ring and the arc-shaped trigger element of the present invention.

[0020] In the diagram: 1. Workbench; 2. Pipe clamp; 3. Outer pipe; 4. Inner pipe; 5. Support component; 51. Fixed seat; 52. Movable seat; 53. Circular plug; 54. Hydraulic cylinder; 6. Ring component; 7. Notch; 8. Permanent magnet; 9. Slide rail; 10. Friction plate; 11. Return spring; 12. Electromagnet; 13. Hidden area; 14. Friction block; 15. Pressure spring; 16. Annular cavity; 17. Dispersion disc; 18. Channel; 19. Guide component; 191. Ring; 192. Thread; 20. Sliding sleeve; 21. Connecting rod; 22. 23. Feed pipe; 24. Gear ring; 25. Gear motor; 26. Drive gear; 27. Pull ring seat; 28. Sliding ring; 29. ​​Trigger rod; 30. Arc-shaped trigger element; 31. No. 1 semicircular block; 32. No. 2 semicircular block; 32. Trigger element; 321. Side plate; 322. Thin metal rod; 323. Trigger head; 324. Lifting area; 325. Lifting block; 326. Strong spring; 33. Traction machine; 34. Pulling steel rope; 35. Detection spring; 36. Sliding rheostat; 37. Arc-shaped chute; 38. Arc-shaped inclined chute; 39. Sliding block. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0023] Example 1: The present invention provides a technical solution: such as Figures 1 to 14 As shown, a uniform foaming device for producing rubber insulation pipes includes a workbench 1 and two pipe clamps 2 symmetrically arranged on the workbench 1. Each pipe clamp 2 includes a first half-ring and a second half-ring. The first half-ring is fixedly installed on the workbench 1, and one end of the second half-ring is rotatably installed on the first half-ring via a pin. The first and second half-rings can be spliced ​​together to form a circle, thereby limiting the movement of the outer pipe 3. The device is also secured at the hinge of the first and second half-rings. Equipped with a flipping motor, which controls the second half-ring to complete the flipping movement, and multiple auxiliary limiting plates are evenly installed on the inner walls of the first and second half-rings. The outer tube 3 is jointly restricted inside the two tube clamps 2. The inner tube 4 is concentrically inserted inside the outer tube 3. Support members 5 are symmetrically installed on both sides of the upper surface of the workbench 1. The two support members 5 are used to limit the inner tube 4. A control box is installed on one side of the workbench 1. The control box is connected to the pulling mechanism and the foaming part to complete the control. A foaming component is slidably disposed in the gap formed between the outer tube 3 and the inner tube 4. The foaming component includes a positioning ring assembly and a dispersing assembly. The dispersing assembly is correspondingly sleeved on the positioning ring assembly to form an integral whole. The dispersing assembly is used to feed the foaming material into the foaming area in a multi-point conveying manner. The positioning ring assembly provides dynamic limiting operation for the dispersing assembly. The pulling mechanism is set on one side of the upper surface of the workbench 1 to pull the positioning ring assembly of the foaming part to move the foaming work. The foaming speed is controlled by the pulling mechanism. A toggle component is installed within the dispersion component to homogenize the foaming material remaining therein. The toggle component includes a sensing element and multiple trigger elements 32. The multiple trigger elements 32 are arranged in a circular array within the dispersion component to control the elimination of air bubbles in the foaming material within the dispersion component through reciprocating shaking. The sensing element is installed within the dispersion component to control the switching of the shaking frequency of the multiple trigger elements 32. Each trigger 32 includes two side plates 321, one of which is connected to the dispersion component. Multiple thin metal rods 322 are evenly distributed between the two side plates 321. The multiple thin metal rods 322 complete the intervention treatment of the bubbles in the foaming material. A trigger head 323 is installed on the top of the two side plates 321. The trigger head 323 slides in contact with the sensing element to complete the shaking trigger operation. It should be noted that when fixing the outer tube 3 and the inner tube 4: first, open the pipe clamp 2 to separate the second half ring from the first half ring. Then, move the outer tube 3 and the inner tube 4 onto the workbench 1. After that, reset the second half ring to clamp and limit the outer tube 3. Then, lift the inner tube 4 to align with the support 5. Then, start the hydraulic cylinder 54 to push the movable seat 52 to slide, causing the circular plug 53 to extend into the end of the inner tube 4, thereby completing the rapid positioning and fixing of the inner tube 4.

[0024] Among them, the geared motor 24, traction machine 33 and other electrical components are all connected to switches via wires, and the switches are electrically connected to controllers. The specific structure of the controllers is not limited.

[0025] Example 2: Based on the foamed part provided in Example 1, this example provides a further technical solution for the foamed part.

[0026] like Figures 5 to 14 As shown, the positioning ring assembly includes: The annular component 6 has its outer wall in sliding contact with the inner wall of the outer tube 3 and is located between the outer tube 3 and the inner tube 4. Three notches 7 are arranged in a circular array around the annular component 6. The limiting unit is set in three notches 7. Multiple limiting units are used to frictionally limit the movement of the foamed part. Each limiting unit includes a permanent magnet 8 that is slidably installed in the notch 7. Slides 9 that cooperate with the permanent magnet 8 are symmetrically opened on both sides of the inner wall of the notch 7. A friction plate 10 is detachably fixedly installed on the top of the permanent magnet 8. A return spring 11 is installed in the slide 9. The positioning ring assembly also includes: An electromagnet 12 is installed at the bottom of each notch 7 and is detachably mounted at the bottom of the notch 7. The electromagnet 12 is used to push and control the permanent magnet 8. The electromagnet 12 is set in cooperation with the permanent magnet 8. After the electromagnet 12 is energized, it repels and pushes the permanent magnet 8. The return spring 11 is located between the upper surface of the permanent magnet 8 and the top of the slide 9. The return spring 11 pushes the friction plate 10 to move into the notch 7 to complete the hiding. Multiple hiding areas 13 are recessed inward on the top of the friction plate 10. A friction block 14 is slidably engaged in each hiding area 13. A pressure spring 15 is installed between the friction block 14 and the hiding area 13. It is worth noting that when controlling the position of the foamed part: by using a positioning ring assembly, the foamed part is pushed into the gap between the outer tube 3 and the inner tube 4. At this time, the electromagnet 12 is activated. After being energized, the electromagnet 12 uses its magnetism to generate a pushing force on the permanent magnet 8. Under the repulsive push of the electromagnet 12, the permanent magnet 8 and the friction plate 10 are pushed upward, so that the friction plate 10 extends out of the notch 7 and rubs against the inner wall of the outer tube 3. This allows the ring part 6 to obtain a certain friction force with the outer tube 3, which is beneficial for the foamed part to withstand the extrusion pressure of the foaming material. At the same time, it is beneficial for the pulling mechanism to pull the foamed part, so that the foamed part moves stably. And only requires The current of the electromagnet 12 is controlled by a sliding rheostat 36, with one of the connecting rods 21 connected to the slider of the rheostat 36. Therefore, the movement of the connecting rod 21 controls the movement of the slider on the rheostat 36, thus dynamically adjusting the current of the three electromagnets 12. This provides dynamic friction, ensuring stable foaming operation. Specifically, the sliding sleeve 20 contacts the foaming material and receives the thrust applied by the material. Under normal conditions, the detection spring 35 pushes the connecting rod 21 to reset, placing the sliding sleeve 20 in its initial position. As the foaming material gradually densifies, it exerts a pushing force on the sliding sleeve 20, causing the sliding sleeve 20 to compress the detection spring 35 and move. The connecting rod 21 controls the sliding rheostat 36 to change the resistance value of the circuit, thereby reducing the current to the electromagnet 12. This gradually reduces the frictional force applied by the friction plate 10. At this point, the detection spring 35 resets, causing the annular part 6 to move relative to the sliding sleeve 20, changing its foaming position and continuing the foaming process. This achieves dynamic adjustment, facilitating control of the foaming speed and enabling the foaming part to be pushed by the foaming material. The entire structure can move, and the foaming parts can also be pulled and moved by the traction mechanism. The coordinated movement of the two can control the movement of the foaming parts, which is beneficial to the foaming process. The friction force of the friction plate 10 can be dynamically adjusted by the cooperation of the sliding rheostat 36 and the connecting rod 21, so that the ring part 6 can obtain different intensity of friction force. In order to improve the stability of the friction plate 10, multiple friction blocks 14 are slidably installed on the friction plate 10. The friction blocks 14 are pushed by the pressure spring 15, so that the friction blocks 14 can carry pressure and contact the outer tube 3, which further improves the stability of the friction plate 10. The dispersed component includes: An annular cavity 16 is located on one side of the annular component 6. The front end of the annular cavity 16 is open and slides in contact with the inner wall of the outer tube 3. A dispersion disk 17 is rotatably mounted on the front end of the annular cavity 16 and slides in contact with the inner wall of the outer tube 3. The dispersion disk 17 has multiple channels 18 communicating with the inside of the annular cavity 16. Multiple connecting rods 21 are located on the back of the annular cavity 16. The tails of the multiple connecting rods 21 slide through the annular component 6, guiding and limiting the dispersion assembly through the multiple connecting rods 21. Each connecting rod 21 has a limit head installed at its tail. A detection spring 35 is sleeved on the outside of each connecting rod 21 and is located between the annular cavity 16 and the annular component 6. The detection spring 35 pushes the annular cavity 16 away from the annular part 6. A sliding rheostat 36 is provided on one side of one of the connecting rods 21 on the annular part 6, and the control end of the sliding rheostat 36 is connected to one of the connecting rods 21. Specifically, the tail of the connecting rod 21 is connected to the slider of the sliding rheostat 36. At the same time, the electromagnets 12 in the three notches 7 are all connected to the terminals of the sliding rheostat 36. The sliding rheostat 36 completes the synchronous control of the electromagnets 12 in the three notches 7. A feed pipe 22 is installed on the back of the annular cavity 16. The feed pipe 22 passes through the annular part 6 and is connected to the external foaming raw material through a flexible tube. A pump for pumping material is installed at the end of the feed pipe 22. A guide component 19 is disposed in each channel 18 and is detachably fixed to the channel 18. The guide component 19 is used to guide and break the foaming material delivered from the channel 18. Each guide component 19 includes a ring 191 and multiple threads 192. The ring 191 is detachably fixed in the channel 18, and the multiple threads 192 are evenly distributed in the ring 191. The annular cavity 16 and the dispersing disk 17 are designed to be detachable, which is conducive to subsequent disassembly and cleaning. The sliding sleeve 20 is integrally disposed on the dispersing disk 17, and the dispersing disk 17 and the sliding sleeve 20 are concentrically disposed. The sliding sleeve 20 slides in contact with the outer wall of the inner tube 4. The sliding sleeve 20 extends toward the annular cavity 16 and the annular member 6, and the sliding sleeve 20 is rotatably connected to the annular cavity 16 and the annular member 6. The inner wall of the annular member 6 slides in contact with the outer wall of the sliding sleeve 20. The distributed component also includes: A gear ring 23 is fixedly sleeved on the sliding sleeve 20, and the gear ring 23 is set on the side away from the annular cavity 16. A reduction motor 24 is installed on the annular part 6 of the positioning ring assembly. Specifically, the reduction motor 24 is mounted on the side wall of the annular part 6 through a bracket. A drive gear 25 is installed at the output end of the reduction motor 24. The sliding sleeve 20 is driven by the meshing of the gear ring 23 and the drive gear 25. Two pull ring seats 26 are symmetrically and detachably fixedly installed on the side wall of the annular part 6 of the positioning ring assembly. Specifically, the two pull ring seats 26 are detachably and fixedly connected to the side wall of the annular part 6. The drive gear 25 is meshed with the gear ring 23. It is worth noting that when uniformly conveying the foaming material: with the dispersion component, the foaming material is temporarily stored in the annular cavity 16 through the feed pipe 22, and then led out through multiple channels 18 on the dispersion disc 17, so that the foaming material can enter between the outer pipe 3 and the inner pipe 4 in a multi-point conveying manner. The channel 18 is equipped with a guide 19, which can intervene in the foaming material through the action of multiple threads 192, causing the bubbles in the foaming material to break. At the same time, the reduction motor 24 is started, and through the meshing transmission of the drive gear 25 and the gear ring 23, the sliding sleeve 20 and the dispersion disc 17 are rotated, so that the dispersion component can realize rotational conveying on the basis of multi-point conveying, further reducing the conveying dead angle, and can quickly and accurately convey the foaming material to the predetermined position. The sensing element includes: A sliding ring 27 is slidably mounted on the annular cavity 16 of the dispersion component. Multiple trigger rods 28 are arranged in a circular array on the back of the sliding ring 27. Each trigger rod 28 is slidably sealed through the back of the annular cavity 16. Multiple arc-shaped trigger elements 29 are arranged in a circular array on the back of the annular cavity 16, and multiple arc-shaped grooves 37 are arranged in a circular array on the back of the annular cavity 16. The multiple arc-shaped trigger elements 29 are correspondingly slidably engaged in the arc-shaped grooves 37. Each arc-shaped trigger element 29 has an arc-shaped inclined groove 38 on its outer surface. A sliding block 39 is slidably engaged in the arc-shaped inclined groove 38, and the sliding block 39 is rotatably connected to the corresponding trigger rod 28. The inner surface of each arc-shaped trigger element 29 is in sliding friction contact with the outer surface of the sliding sleeve 20. Specifically, each arc-shaped trigger element 29 has a friction layer on its inner surface, which is in sliding friction contact with the outer surface of the sliding sleeve. Specifically, the sliding ring 27 is slidably mounted at the inner edge of the annular cavity 16, and a sliding area that cooperates with the sliding ring 27 is opened on the inner wall of the annular cavity 16. Multiple first semicircular blocks 30 are arranged in a circular array on the inner wall of the sliding ring 27, forming a first undulating region within the sliding ring 27. Multiple second semicircular blocks 31 are also arranged in a circular array on the inner wall of the sliding ring 27, forming a second undulating region within the sliding ring 27. The first and second semicircular blocks 30 are of the same size, and the number of second semicircular blocks 31 is greater than the number of first semicircular blocks 30, resulting in a higher frequency in the second undulating region compared to the first undulating region. Multiple trigger elements 32 are distributed in a circular array on the inner wall of the dispersion disk 17, and these trigger elements 32 are used to control the emission within the annular cavity 16. The foaming material is stirred and mixed. Multiple triggers 32 extend into the annular cavity 16. The multiple triggers 32 are used to stir and mix the foaming material in the annular cavity 16. Multiple first semicircular blocks 30 and second semicircular blocks 31 slide in contact with the trigger head 323. The trigger head 323 is provided with a hemispherical top, so that the trigger head 323 can smoothly contact the first semicircular block 30 and the second semicircular block 31. Multiple thin metal rods 322 are detachably fixedly connected to two side plates 321. The multiple thin metal rods 322 are distributed in circles, rectangles, trapezoids and other shapes between the two side plates 321, which can be freely set according to the actual working requirements. It is worth noting that when processing the foaming material: A toggle assembly is provided, which synchronously drives multiple trigger elements 32 to rotate within the annular cavity 16 as the dispersing disc 17 rotates. This toggle and mixes the material within the annular cavity 16, resulting in a more uniform distribution of the foaming material. Simultaneously, during rotation, the thin metal rods 322 on the trigger elements 32 further precipitate and break up air bubbles within the foaming material, making the foaming material denser and reducing the void ratio. Furthermore, as the trigger elements 32 move, they gradually interact with... When the first semicircular block 30 contacts the trigger head 323, the trigger 32 moves downward and misaligns with the first semicircular block 30. Then, the powerful spring 326 moves the trigger 32 back to its original position and upward. Thus, as the dispersing disc 17 rotates, multiple triggers 32 are simultaneously driven to vibrate up and down, further processing the bubbles and making the foaming material more uniform. Furthermore, when the vibration frequency of the triggers 32 needs adjustment, under normal conditions, the reduction motor 24 is controlled to operate, causing the sliding sleeve... When the sliding sleeve 20 rotates in one direction, due to the sliding friction contact between the sliding sleeve 20 and the arc-shaped trigger 29, the friction force applied by the sliding sleeve 20 pushes the arc-shaped trigger 29 to move within the arc-shaped inclined groove 38, causing the sliding block 39 to move within the arc-shaped inclined groove 38, pushing the trigger rod 28 to change position, and pushing the sliding ring 27 to move. At this time, the trigger head 323 contacts the first undulating area. When switching, it is only necessary to control the reduction motor 24 to switch the operation, so that the sliding sleeve 20 rotates in another direction. Similarly, under the guidance of the arc-shaped inclined groove 38, the trigger rod 28 changes position, pushing the sliding ring 27 to move, so that the trigger head 323 contacts the second undulating area, so that the first undulating area and the second undulating area can automatically switch according to the rotation direction of the sliding sleeve 20, and the first undulating area and the second undulating area are switched, so that the trigger head 323 and the first undulating area and the second undulating area are switched to contact, so that the trigger 32 obtains different frequencies of vibration, and can be freely switched according to the vibration requirements. The trigger 32 also includes: Lifting zones 324 are disposed on the inner wall of the dispersing component. Multiple lifting zones 324 are disposed in a circular array within the dispersing component. Specifically, multiple lifting zones 324 are disposed in a circular array on the inner wall of the dispersing disk 17. A lifting block 325 is slidably installed in each lifting zone 324. The lifting block 325 is detachably and fixedly connected to one of the side plates 321. A strong spring 326 is installed in the lifting zone 324. The strong spring 326 is located between the lifting block 325 and the top of the lifting zone 324. The strong spring 326 pushes the trigger head 323 to move toward the sliding ring 27. Both support members 5 include: A fixed seat 51 is fixedly mounted on the workbench 1. A movable seat 52 is slidably engaged on one side of the fixed seat 51 on the upper surface of the workbench 1. A circular plug 53 is installed on the side of the movable seat 52 facing the inner tube 4. The circular plug 53 extends into the inner tube 4 to complete the limiting. A sliding area that cooperates with the movable seat 52 is opened on the workbench 1. A hydraulic cylinder 54 is fixedly mounted on the fixed seat 51. The output end of the hydraulic cylinder 54 is connected to the back of the movable seat 52 for transmission. The circular plug 53 completes the support and limiting of the inner tube 4.

[0027] Example 3: Based on the traction mechanism provided in Example 1, this example provides a further technical solution for the traction mechanism.

[0028] like Figure 4 As shown, the traction mechanism includes: The traction machine 33 is set on the upper surface of the workbench 1. There are two traction machines 33, which are arranged symmetrically. The traction machine 33 has a pulling steel rope 34 connected to the pull ring seat 26 wound on it. The front end of the pulling steel rope 34 is detachably fixed to the pull ring seat 26. At the same time, a guide mechanism can be installed on the workbench 1. The guide mechanism specifically includes multiple traction rods that are slidably installed on the support member 5 through the bracket. The front end of the multiple traction rods is connected to the foam part, specifically to the annular part 6 of the positioning ring assembly, so that the foam part will not shift during movement. The traction rods are made of segmented splicing. After the foam part moves a certain distance, the corresponding extra traction rods can be disassembled, which can save construction space. It is worth noting that during the mobile foaming process: by using a traction mechanism, the traction steel rope 34 is fixed to the pull ring seat 26. Subsequently, the traction machine 33 is started, and the traction machine 33 pulls and moves the traction steel rope 34, so that the foamed part moves stably to carry out the foaming work. It is only necessary to adjust the speed of the traction machine 33 according to the foaming situation, which is convenient for technicians to operate and ensures that the overall foaming work can be carried out safely and stably.

[0029] Example 4: A uniform foaming method for producing rubber insulation pipes, the foaming method specifically includes the following steps: Step 1: First, put the outer tube 3 on the outside of the inner tube 4, then control the two support pieces 5 to fix the inner tube 4, and then control the two pipe clamps 2 to fix the outer tube 3. Step 2: Then control the foaming component to enter between the outer tube 3 and the inner tube 4 until it reaches the predetermined foaming position and waits for instructions. After that, control the movement of the foaming component, and the foaming material is evenly delivered through the foaming component to carry out the foaming work. Step 3: Then control the dispersion component to convey the foaming material to multiple points by rotating it, while triggering multiple triggers 32 on the toggle component to rotate synchronously, and breaking the air bubbles in the foaming material through the triggers 32. Step 4: Then, by switching the contact between the first undulating area and the second undulating area and the trigger 32, the trigger 32 is controlled to vibrate up and down at different frequencies, thereby controlling the bubbles in the foaming material to break down quickly. Step 5: Simultaneously control the pulling mechanism to drive the foaming component to move forward at a constant speed between the outer tube 3 and the inner tube 4. Control the pulling mechanism according to the foaming speed requirements.

[0030] This invention provides a uniform foaming device and method for producing rubber insulation pipes. The specific working principle is as follows: First, the inner tube 4 is fitted inside the outer tube 3. Then, the outer tube 3 and inner tube 4 are moved together onto the workbench 1. Subsequently, the inner tube 4 is fixed using two support members 5, and the outer tube 3 is fixed using two pipe clamps 2. Then, the foaming component is installed between the outer tube 3 and inner tube 4, and one end of the gap between the outer tube 3 and inner tube 4 is sealed. Next, the foaming material is uniformly fed out through the foaming component via the feed pipe 22. Simultaneously, a pulling mechanism drives the foaming component to move at a constant speed between the outer tube 3 and inner tube 4, allowing for uniform foaming between the outer tube 3 and inner tube 4. The foaming component uses a dispersing component to transport the foaming material at multiple points through rotation, ensuring uniform foaming. The material is conveyed between the outer tube 3 and the inner tube 4, which improves the uniformity of foaming and avoids the problem of missing parts in some areas when conveying foaming material in a single position. At the same time, a toggle component is added to the dispersing component. While the dispersing component rotates to feed the material, it drives multiple triggers 32 on the toggle component to rotate synchronously. This can evenly toggle the foaming material introduced into the annular cavity 16, making the foaming material more uniform. During the rotation, the triggers 32 can break the air bubbles in the foaming material, making the foaming material more compact and avoiding the problem of hollow areas. Furthermore, the triggers 32 can continuously shake up and down, which can promote a more uniform distribution of air bubbles in the foaming material, avoid defects such as a large number of holes and voids in the finished product, improve product quality, and enhance product performance.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A uniform foaming device for producing rubber insulation pipes, comprising a workbench (1), characterized in that, Also includes: Two pipe clamps (2) are symmetrically arranged on the workbench (1), and an outer pipe (3) is concentrically inserted inside the two pipe clamps (2). Support members (5) are symmetrically installed on both sides of the upper surface of the workbench (1). The foaming component is slidably disposed in the gap formed between the outer tube (3) and the inner tube (4). The foaming component includes a positioning ring assembly and a dispersing assembly. The dispersing assembly is used to feed the foaming material into the foaming area in a multi-point conveying manner. The positioning ring assembly provides dynamic limiting operation for the dispersing assembly. The pulling mechanism is set on one side of the upper surface of the workbench (1) to pull the positioning ring assembly of the foaming part to carry out the foaming work; A toggle component is set inside the dispersion component to achieve homogenization of the foam material remaining inside. The toggle component includes a sensing element and multiple trigger elements (32). The multiple trigger elements (32) are arranged in a circular array inside the dispersion component to eliminate air bubbles in the foam material inside the dispersion component by reciprocating shaking. The sensing element is set inside the dispersion component to achieve switching control of the shaking frequency of the multiple trigger elements (32). Each trigger (32) includes two side plates (321), one of which is connected to the dispersion component. Multiple thin metal rods (322) are evenly distributed between the two side plates (321). A trigger head (323) is installed on the top of both side plates (321). The trigger head (323) slides in contact with the sensing element to complete the shaking trigger operation.

2. The uniform foaming device for producing rubber insulation pipes according to claim 1, characterized in that: The positioning ring assembly includes: An annular component (6) is disposed between the outer tube (3) and the inner tube (4), and three notches (7) are arranged in a circular array around the annular component (6). The limiting unit is set in three notches (7). Multiple limiting units are used to frictionally limit the movement of the foaming part. Each limiting unit includes a permanent magnet (8) that is slidably installed in the notch (7). Slides (9) that cooperate with the permanent magnet (8) are symmetrically opened on both sides of the inner wall of the notch (7). A friction plate (10) is detachably fixed on the top of the permanent magnet (8). A return spring (11) is installed in the slide (9).

3. The uniform foaming device for producing rubber insulation pipes according to claim 2, characterized in that: The positioning ring assembly also includes: An electromagnet (12) is provided at the bottom of each notch (7) and is used to drive and control the permanent magnet (8).

4. The uniform foaming device for producing rubber insulation pipes according to claim 1, characterized in that: The dispersed component includes: An annular cavity (16) is located on one side of the annular component (6). A dispersion disk (17) is rotatably installed at the front end of the annular cavity (16). The dispersion disk (17) has multiple channels (18) communicating with the inside of the annular cavity (16). Multiple connecting rods (21) are provided on the back of the annular cavity (16). The tails of the multiple connecting rods (21) slide through the annular component (6). Multiple detection springs (35) are fitted around multiple connecting rods (21). A sliding rheostat (36) is provided on one side of one of the connecting rods (21) on the annular part (6). The control end of the sliding rheostat (36) is connected to one of the connecting rods (21). At the same time, the electromagnets (12) in the three notches (7) are electrically connected to the sliding rheostat (36). A feed pipe (22) is installed on the back of the annular cavity (16). A guide (19) is provided in each channel (18), and the guide (19) is detachably and fixedly connected to the channel (18). The guide (19) is used to guide and break the foaming material sent out by the channel (18). The sliding sleeve (20) is integrally set on the dispersing disk (17), and the dispersing disk (17) and the sliding sleeve (20) are concentrically set.

5. The uniform foaming device for producing rubber insulation pipes according to claim 4, characterized in that: The distributed component also includes: A gear ring (23) is fixedly sleeved on a sliding sleeve (20). A geared motor (24) is installed on the annular part (6) of the positioning ring assembly. A drive gear (25) is installed at the output end of the geared motor (24). Two pull ring seats (26) are symmetrically and detachably fixedly installed on the side wall of the annular part (6) of the positioning ring assembly.

6. The uniform foaming device for producing rubber insulation pipes according to claim 4, characterized in that: The sensing element includes: A sliding ring (27) is slidably mounted on the annular cavity (16) of the dispersion component. Multiple trigger rods (28) are arranged in a circular array on the back of the sliding ring (27). Each trigger rod (28) is slidably sealed through the back of the annular cavity (16). Multiple arc-shaped triggers (29) are arranged in a circular array on the back of the annular cavity (16), and multiple arc-shaped grooves (37) are arranged in a circular array on the back of the annular cavity (16). The multiple arc-shaped triggers (29) are correspondingly slidably engaged in the arc-shaped grooves (37). Each arc-shaped trigger (29) has an arc-shaped inclined groove (38) on its outer surface. A sliding block (39) is slidably engaged in the arc-shaped inclined groove (38), and the sliding block (39) is rotatably connected to the corresponding trigger rod (28). The inner surface of each arc-shaped trigger (29) is in sliding friction contact with the outer surface of the sliding sleeve (20). Multiple first semicircular blocks (30) are arranged in a circular array on the inner wall of the sliding ring (27). The multiple first semicircular blocks (30) form a first undulating region in the sliding ring (27). Multiple second semicircular blocks (31) are arranged in a circular array on the inner wall of the sliding ring (27). The multiple second semicircular blocks (31) form a second undulating region in the sliding ring (27).

7. The uniform foaming device for producing rubber insulation pipes according to claim 6, characterized in that: The trigger (32) also includes: The lifting area (324) is located on the inner wall of the dispersing component. Multiple lifting areas (324) are provided and installed in the dispersing component in a circular array. Each lifting area (324) has a lifting block (325) slidably installed in it. The lifting block (325) is detachably and fixedly connected to one of the side plates (321), and a strong spring (326) is installed in the lifting area (324).

8. The uniform foaming device for producing rubber insulation pipes according to claim 1, characterized in that: Both support members (5) include: A fixed seat (51) is fixedly installed on the workbench (1). A movable seat (52) is slidably engaged on the upper surface of the workbench (1) on one side of the fixed seat (51). A circular plug (53) is installed on the movable seat (52) facing the inner tube (4). A hydraulic cylinder (54) is fixedly installed on the fixed seat (51). The circular plug (53) completes the support and limit of the inner tube (4).

9. The uniform foaming device for producing rubber insulation pipes according to claim 1, characterized in that: The traction mechanism includes: The traction machine (33) is set on the upper surface of the workbench (1). There are two traction machines (33), which are arranged symmetrically. The traction machine (33) has a pulling steel rope (34) connected to the pull ring seat (26) wound on it.

10. A method for uniform foaming in the production of rubber insulation pipes, comprising a uniform foaming device for the production of rubber insulation pipes as described in any one of claims 1-7, characterized in that, The foaming method specifically includes the following steps: Step 1: First, put the outer tube (3) on the outside of the inner tube (4), then control the two support pieces (5) to fix the inner tube (4), and then control the two pipe clamps (2) to fix the outer tube (3); Step 2: Then control the foaming component to enter between the outer tube (3) and the inner tube (4) until it reaches the predetermined foaming position and waits for instructions. Then control the movement of the foaming component and the foaming material is evenly delivered through the foaming component to carry out the foaming work. Step 3: Then control the dispersion component to deliver the foaming material to multiple points by rotating it, and at the same time trigger multiple triggers (32) on the toggle component to complete synchronous rotation, and use the triggers (32) to break the air bubbles in the foaming material; Step 4: Then, by switching the No. 1 undulating area and the No. 2 undulating area to contact the trigger (32), the trigger (32) is controlled to shake up and down at different frequencies, thereby controlling the bubbles in the foaming material to break down quickly. Step 5: Simultaneously control the pulling mechanism to drive the foaming component to move at a constant speed between the outer tube (3) and the inner tube (4), and control the pulling mechanism according to the foaming speed requirements.

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