An automatic feeding and trimming device for composite pipes

Abstract

This invention provides an automatic composite pipe feeding and trimming device, comprising: a base, with symmetrically fixed brackets of an inverted U-shaped longitudinal section on the top of the base; a horizontally oriented rotating shaft rotatably mounted between the two brackets; a motor connected to the rotating shaft fixedly mounted on one of the brackets; and four positioning mechanisms for positioning the pipe arranged in a circular array on the outer wall of the rotating shaft; and a guide assembly fixedly mounted on the top of the base and located on one side of the two brackets. By incorporating the rotating shaft, two grinding mechanisms, a connecting plate, two patching mechanisms, and four positioning mechanisms, this invention achieves one-time trimming of the pipe from loading to unloading, replacing the current method of sequentially transferring the pipe to grinding and patching equipment. This reduces the pipe transfer time during trimming operations, significantly shortening the trimming time and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe processing equipment technology, and specifically to an automatic feeding and trimming device for composite pipes. Background Technology

[0002] Composite pipes are pipes made of two or more different materials through a specific process. They combine the advantages of each component material and are widely used in construction, chemical, petroleum, natural gas and other fields. Among them, steel-reinforced PE composite pipe is a type of pipe made of steel skeleton and polyethylene, which combines the high strength of steel and the corrosion resistance of PE. In the production process of composite pipes, the trimming of the pipe ends is a key step that directly affects product quality and production efficiency. The trimming of composite pipe ends includes grinding the pipe ends and attaching protective rings. Traditional trimming methods usually require transferring the pipes between multiple machines, such as from grinding equipment to patching equipment. In actual use, this pipe trimming method increases non-production time due to frequent pipe transfers, which greatly increases the time required for pipe trimming and reduces overall efficiency. Therefore, this application proposes an automatic feeding and trimming device for composite pipes. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an automatic material feeding and trimming device for composite pipes, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An automatic feeding and trimming device for composite pipes includes: The base has symmetrically fixed brackets with an inverted U-shaped longitudinal section on its top. A horizontal rotating shaft is rotatably installed between the two brackets. A motor connected to the rotating shaft is fixedly installed on one of the brackets. Four positioning mechanisms for positioning the pipe are installed in a ring array on the outer side wall of the rotating shaft. The guide assembly, which is fixedly mounted on the top of the base and located on one side of the two supports, is used to guide the pipe so that one of the positioning mechanisms positions the pipe. There are two connecting plates. The two connecting plates are symmetrically slidably installed on the other side of the two brackets along the axis of the first rotating shaft. An electromagnetic slider connected to the connecting plate is fixedly installed on the base. The end of the connecting plate extends to the top of the first rotating shaft and is equipped with a grinding mechanism, which is used to grind the end of the pipe. The patching mechanism has a guide rail fixedly installed on the side of the connecting plate near the bracket. A sliding block is slidably installed on the guide rail along the axis of the first rotating shaft. An electromagnetic slider two connected to the sliding block is fixedly installed on the guide rail. The patching mechanism is installed on the sliding block. The patching mechanism is used to attach protective rings to the ends of the pipes that have been polished by the polishing mechanism. A conveyor belt is fixedly installed between the opposite sides of the two brackets and directly below the first rotating shaft. It is used to transport the finished pipes.

[0005] Furthermore: the positioning mechanism includes positioning components symmetrically mounted on the outer side wall of the rotating shaft. The positioning components include connecting seats fixedly mounted on the rotating shaft. Arc-shaped clamps are symmetrically hinged to the ends of the connecting seats. A drive rod is symmetrically mounted on the connecting seats to drive the arc-shaped clamps to rotate on the connecting seats.

[0006] Furthermore: the guiding assembly includes a base plate fixedly installed on the base, and guiding units are installed in a horizontal linear array on the top of the base plate. The guiding unit includes a support frame symmetrically fixedly installed on the top of the base plate, and an inclined guiding roller is rotatably installed on the top of the support frame, with an inverted V-shape between the two guiding rollers.

[0007] Furthermore: the grinding mechanism is horizontally oriented and rotatably mounted on a second rotating shaft located on a connecting plate. The second rotating shaft is located directly above the first rotating shaft. A mounting plate is installed at the end of the second rotating shaft, and a grinding component for grinding the end surface of the pipe is installed on the mounting plate. A drive component for driving the second rotating shaft to rotate is installed on the connecting plate. When the grinding component rotates around the second rotating shaft, the end of the pipe is ground by the grinding component.

[0008] Furthermore: the grinding assembly includes a hinge block hinged to one end of the mounting plate, a second motor for driving the hinge block to rotate is fixedly mounted on the mounting plate, a mounting shaft is rotatably mounted on the hinge block, a third motor for driving the mounting shaft to rotate is fixedly mounted on the hinge block, and a grinding head that can contact the end of the pipe is fixedly mounted at the end of the mounting shaft.

[0009] Furthermore: the drive assembly includes a motor four fixedly mounted on the connecting plate, a pulley one fixedly mounted on the output shaft of the motor four, a pulley two coaxially fixedly connected to the rotating shaft two, and a transmission belt connecting the pulley one and the pulley two.

[0010] Furthermore: a fixing plate is fixedly installed on the top of the connecting plate and on the side of the bracket away from the support frame. Vertical telescopic rods are symmetrically fixed on the fixing plate. Connecting blocks are fixedly installed at the bottom of the two telescopic rods. A second drive rod connected to the connecting blocks is fixedly installed on the fixing plate. A hot melt plate for hot melting the pipe end is fixedly installed at the bottom of the connecting block. A patching mechanism is used to attach a protective ring to the pipe end after hot melting.

[0011] Furthermore: the patching mechanism includes a conveyor seat fixedly installed on the top of the sliding block. The conveyor seat has a receiving cavity for accommodating the protective ring. The receiving cavity is open on the side near the hot melt plate. The top of the conveyor seat and the end away from the hot melt plate have a feeding port that communicates with the inside of the receiving cavity. Both sides of the conveyor seat have through holes that communicate with the inside of the receiving cavity. A drive rod three is fixedly installed on the end of the conveyor seat away from the hot melt plate. The piston rod of the drive rod three extends into the receiving cavity and a push plate is fixedly installed thereon.

[0012] Furthermore, a cleaning mechanism is installed on the base and above the two mounting plates. The cleaning mechanism is used to clean the dust generated during the grinding of the pipe ends.

[0013] Furthermore: the cleaning mechanism includes a negative pressure box fixedly installed on the top of the base, connecting frames fixedly installed on both brackets, expansion hoods fixedly installed on the connecting frames directly above the mounting plate, a connecting pipe through the negative pressure box and communicating with the interior of both expansion hoods, an installation hole communicating with the interior of the negative pressure box, an exhaust fan fixedly installed on the negative pressure box and within the installation hole, one side of the negative pressure box being open, a sealing plate hinged to the negative pressure box for sealing its opening end, the sealing plate being fixed to the negative pressure box by a buckle, a collection box with an open top placed inside the negative pressure box and directly below the installation hole, a filter plate fixedly installed inside the negative pressure box for sealing the installation hole.

[0014] This invention provides an automatic feeding and trimming device for composite pipes. Compared with the prior art, it has the following advantages: By setting up a rotating shaft, two sets of grinding mechanisms, a connecting plate, two sets of patching mechanisms, and four sets of positioning mechanisms, the pipe can be trimmed in one go from loading to unloading. This replaces the current operation method that requires transferring the pipe to the grinding equipment and patching equipment in sequence, reducing the pipe transfer time during the pipe trimming operation, thereby greatly shortening the time required for pipe trimming and improving work efficiency. By setting up a cleaning mechanism, when the grinding mechanism grinds the end of the pipe, the cleaning mechanism cleans up the dust generated during the grinding of the pipe end, effectively preventing the dust generated during the grinding of the pipe end from being emitted into the ambient air and reducing the ambient air quality. With the design of the collection box, the dust remaining in the negative pressure box falls into the collection box under its own gravity. The dust is collected by the collection box. When cleaning the dust collected in the negative pressure box, the sealing plate on the opening end of the negative pressure box is removed, and the collection box can be taken out of the negative pressure box, which makes it easy to process the dust collected in the collection box. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A schematic diagram of the installation structure of the grinding mechanism of the present invention is shown; Figure 3 A schematic diagram of the mounting structure of the patch mechanism of the present invention is shown; Figure 4 A schematic diagram of the positioning mechanism of the present invention is shown; Figure 5 A schematic diagram of the guiding assembly of the present invention is shown; Figure 6 A schematic diagram of the mounting structure of the hot melt plate of the present invention is shown; Figure 7 A schematic diagram of the installation structure of the cleaning mechanism of the present invention is shown; Figure 8 A schematic diagram of the installation structure of the positioning mechanism of the present invention is shown; Figure 9 A schematic diagram of the installation structure of the polishing assembly of the present invention is shown; Figure 10 A schematic diagram of the installation structure of the collection box of the present invention is shown; Figure 11 A schematic diagram of the installation structure of the filter plate of the present invention is shown; The diagram shows: 1. Base; 11. Bracket; 111. Connecting frame; 12. Rotating shaft one; 13. Motor one; 14. Electromagnetic slider one; 15. Conveyor belt; 2. Positioning mechanism; 21. Connecting seat; 22. Arc-shaped clamp; 23. Drive rod one; 3. Guide assembly; 31. Base plate; 32. Support frame; 33. Guide roller; 4. Connecting plate; 41. Guide rail; 42. Sliding block; 43. Electromagnetic slider two; 44. Fixing plate; 45. Telescopic rod; 46. Connecting block; 47. Drive rod two; 48. Hot melt plate; 5. Grinding mechanism; 51. Rotating shaft two; 52. Mounting plate; 53. Grinding Components; 531, Hinge Block; 532, Motor II; 533, Mounting Shaft; 534, Motor III; 535, Grinding Head; 54, Drive Assembly; 541, Motor IV; 542, Pulley I; 543, Pulley II; 544, Drive Belt; 6, Patch Mounting Mechanism; 61, Conveyor Seat; 611, Receiving Cavity; 612, Feeding Port; 613, Through Hole; 62, Drive Rod III; 63, Push Plate; 7, Cleaning Mechanism; 71, Negative Pressure Box; 711, Mounting Hole; 72, Expansion Cover; 73, Connecting Pipe; 74, Exhaust Fan; 75, Sealing Plate; 76, Collection Box; 77, Filter Plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0018] To address the technical problems in the background section, an automatic feeding and trimming device for composite pipes is provided as follows: Combination Figures 1-11 As shown, the present invention provides an automatic material feeding and trimming device for composite pipes, comprising: The base 1 has a bracket 11 with an inverted U-shaped longitudinal section symmetrically fixed on its top. A horizontal rotating shaft 12 is rotatably installed between the two brackets 11. A motor 13 connected to the rotating shaft 12 is fixedly installed on one of the brackets 11. Four positioning mechanisms 2 for positioning the pipe are installed in a ring array on the outer side wall of the rotating shaft 12. The guide assembly 3 is fixedly installed on the top of the base 1 and located on one side of the two supports 11. The guide assembly 3 is used to guide the pipe so that one of the positioning mechanisms 2 positions the pipe. Specifically, one end of the guide assembly 3 is connected to the conveying end of the external conveyor used to transport the processed pipe. There are two connecting plates 4. The two connecting plates 4 are symmetrically slidably installed on the other side of the two brackets 11 along the axis of the rotating shaft 12. An electromagnetic slider 14 connected to the connecting plates 4 is fixedly installed on the base 1. The end of the connecting plate 4 extends to the top of the rotating shaft 12 and is equipped with a grinding mechanism 5, which is used to grind the end of the pipe. The patching mechanism 6 has a guide rail 41 fixedly installed on the side of the connecting plate 4 near the support 11. A sliding block 42 is slidably installed on the guide rail 41 along the axis of the rotating shaft 12. An electromagnetic slider 43 connected to the sliding block 42 is fixedly installed on the guide rail 41. The patching mechanism 6 is installed on the sliding block 42. The patching mechanism 6 is used to attach a protective ring to the end of the pipe that has been polished by the polishing mechanism 5. It is worth noting that the protective ring is made of polyethylene material. A conveyor belt 15 is fixedly installed between the opposite sides of the two supports 11 and directly below the rotating shaft 12. It is used to transport the finished pipe.

[0019] In use, when the external conveyor transports the processed pipe to the conveyor end, it is transported to the guide assembly 3, which guides the processed pipe to one side of the rotating shaft 12. At this time, the control motor 13 causes the rotating shaft 12 to rotate on the two supports 11, driving multiple sets of positioning mechanisms 2 to rotate around the rotating shaft 12. When one set of positioning mechanisms 2 rotates around the rotating shaft 12 to the guide assembly 3, the pipe can be positioned by the positioning mechanism 2 near the guide assembly 3. Then, the rotating shaft 12 is rotated on the two supports 11 to move the pipe to be ground to directly above the rotating shaft 12. At this time, the two electromagnetic sliders 1 4. Bring the two connecting plates 4 closer together, causing the two sets of grinding mechanisms 5 to contact both ends of the pipe respectively. At this time, the two sets of grinding mechanisms 5 can grind both ends of the pipe respectively. During this process, the adjacent set of positioning mechanisms 2 is located at the guide component 3, so that the next pipe to be ground can be positioned. After the grinding of the pipe located above the rotating shaft 12 is completed, control the motor 13 to make the rotating shaft 12 rotate on the two supports 11, so that the ground pipe rotates to the side of the rotating shaft 12 away from the guide component 3. At this time, the ground pipe is located between the two sets of patching mechanisms 6. At this time, the two sets of patching mechanisms 6. Protective rings are attached to both ends of the pipe. During this process, the pipe positioned on the positioning mechanism 2 on the side of the rotating shaft 12 away from the patching mechanism 6 rotates to above the rotating shaft 12, allowing the two sets of grinding mechanisms 5 to grind both ends of the pipe. The positioning mechanism 2, located near the guide assembly 3, positions the next pipe to be ground. When the end of the pipe above the rotating shaft 12 is ground and the protective rings are attached to both ends of the pipe between the two sets of patching mechanisms 6, the motor 13 is controlled to rotate the rotating shaft 12 on the two supports 11, so that the pipe with the protective rings attached is positioned on the conveyor. Above the conveyor belt 15, the positioning mechanism 2 is removed from positioning the pipe after the protective ring patch is applied. This allows the pipe to fall onto the conveyor belt 15, where it is then transported and unloaded. During this process, the two grinding mechanisms 5 and the two patching mechanisms 6 simultaneously work on other pipes to be repaired, achieving a one-time repair of the pipes from loading to unloading. This replaces the current method of sequentially transferring the pipes to the grinding and patching equipment, reducing the pipe transfer time during the repair process and significantly shortening the repair time, thus improving work efficiency.

[0020] In this embodiment, the positioning mechanism 2 includes positioning components symmetrically installed on the outer side wall of the rotating shaft 12. The positioning components include a connecting seat 21 fixedly installed on the rotating shaft 12. The end of the connecting seat 21 is symmetrically hinged with an arc-shaped clamping plate 22. A drive rod 23 for driving the arc-shaped clamping plate 22 to rotate on the connecting seat 21 is symmetrically installed on the connecting seat 21. In use, the roll material is positioned between the two arc-shaped clamping plates 22 on opposite sides of the two sets of positioning components. Then, the drive rod 23 on the two sets of positioning components is controlled to make both arc-shaped clamping plates 22 on the positioning components rotate on the connecting seat 21, so that both arc-shaped clamping plates 22 on the positioning components abut against the pipe material. Thus, the pipe material can be clamped and positioned by the two sets of positioning components, which is easy to control.

[0021] In this embodiment, the guiding assembly 3 includes a base plate 31 fixedly installed on the base 1. The top of the base plate 31 is equipped with guiding units arranged in a horizontal linear array. Each guiding unit includes a support frame 32 symmetrically fixedly installed on the top of the base plate 31. An inclined guiding roller 33 is rotatably installed on the top of the support frame 32. The two guiding rollers 33 form an inverted V-shape. Specifically, the arc-shaped clamp 22 can move through the space between two adjacent sets of guiding units. In use, when the external conveyor transports the processed pipe to the conveying end of the conveyor, the pipe is displaced above the guiding roller 33 on the guiding assembly 3. During the external conveyor's transport of the pipe, when the pipe comes into contact with the guiding roller 33, the guiding roller 33 rotates on the support frame 32, thereby achieving the guiding effect on the pipe. Example 2

[0022] like Figures 1-11 As shown, based on the above embodiments, this embodiment further provides the following: In this embodiment, the grinding mechanism 5 is horizontally mounted on a rotating shaft 51 located on a connecting plate 4. The rotating shaft 51 is directly above the rotating shaft 12. A mounting plate 52 is mounted on the end of the rotating shaft 51, and a grinding component 53 for grinding the end surface of the pipe is mounted on the mounting plate 52. A drive component 54 for driving the rotating shaft 51 to rotate is mounted on the connecting plate 4. When the grinding component 53 rotates around the rotating shaft 51, the end of the pipe is ground. In use, the two connecting plates 4 are brought closer together by two electromagnetic sliders 14, and the two sets of grinding mechanisms 5 are driven to contact the two ends of the pipe respectively. The grinding component 53 contacts the end of the pipe. During this period, the drive component 54 is controlled to rotate the rotating shaft 51, thereby driving the grinding component 53 to rotate around the rotating shaft 51 through the mounting plate 52, thus achieving the grinding effect on the end of the pipe.

[0023] In this embodiment, the grinding assembly 53 includes a hinge block 531 hinged to one end of the mounting plate 52. A second motor 532 for driving the hinge block 531 to rotate is fixedly mounted on the mounting plate 52. A mounting shaft 533 is rotatably mounted on the hinge block 531. A third motor 534 for driving the mounting shaft 533 to rotate is fixedly mounted on the hinge block 531. A grinding head 535 that can contact the end of the pipe is fixedly mounted at the end of the mounting shaft 533. In use, the two connecting plates 4 are brought closer together by two electromagnetic sliders 14, causing the two sets of grinding mechanisms 5 to contact both ends of the pipe. During this process, the grinding head 535 contacts the end of the pipe. The motor is controlled... Motor 534 rotates the mounting shaft 533, causing the grinding head 535 to rotate around the mounting shaft 533. With the cooperation of the drive assembly 54, the end of the pipe can be ground. The hinge block 531 is hinged to the mounting plate 52. When it is necessary to grind the edge of the pipe end, the hinge block 531 is rotated on the mounting plate 52 by motor 532, so that the grinding head 535 can be tilted. At this time, with the two connecting plates 4 sliding and engaging by the two electromagnetic sliders 14, the grinding head 535 can contact the edge of the pipe end. With the cooperation of motor 534 and drive assembly 54, the edge of the pipe end can be ground.

[0024] In this embodiment, the drive assembly 54 includes a motor 541 fixedly mounted on the connecting plate 4. A pulley 542 is fixedly mounted on the output shaft of the motor 541. A pulley 543 is coaxially fixed on the rotating shaft 51. A transmission belt 544 is connected between the pulley 542 and the pulley 543. In use, the motor 541 is turned on, and the output shaft of the motor 541 rotates, driving the pulley 542 to rotate. At this time, under the action of the transmission belt 544, the rotating shaft 51 can be driven to rotate on the connecting plate 4 through the pulley 543, which is convenient for control. Example 3

[0025] like Figures 1-11 As shown, based on the above embodiments, this embodiment further provides the following: In this embodiment, a fixing plate 44 is fixedly installed on the top of the connecting plate 4 and on the side of the bracket 11 away from the support frame 32. Vertical telescopic rods 45 are symmetrically fixed on the fixing plate 44. Connecting blocks 46 are fixedly installed at the bottom of the two telescopic rods 45. A second drive rod 47 connected to the connecting blocks 46 is fixedly installed on the fixing plate 44. A hot melt plate 48 for hot melting the pipe end is fixedly installed at the bottom of the connecting blocks 46. Specifically, the hot melt plate 48 has a built-in electric heating wire for heating itself. When the grinding head 535 contacts the edge of the pipe end, the hot melt plate 48 contacts the pipe end. The patching mechanism 6 is used to attach a protective ring to the hot melted pipe end. When attaching the protective ring, the hot melt plate 48... When energized, the control drive rod 47 moves the connecting block 46 along the two telescopic rods 45, so that the hot melt plate 48 is located on one side of the pipe end. The two connecting plates 4 slide and engage through the two electromagnetic sliders 14, so that when the grinding head 535 contacts the edge of the pipe end, the hot melt plate 48 contacts the pipe end. The hot melt plate 48 is energized and its temperature rises, so that when it contacts the pipe end, the pipe end can be heat-melted. At this time, the control drive rod 47 resets the connecting block 46, and the electromagnetic slider 43 moves the sliding block 42 closer to the pipe on the guide rail 41, driving the patching mechanism 6 to move towards the pipe so that the protective ring contacts the pipe end. The protective ring is then attached to the pipe end after heat fusion, achieving the effect of attaching a protective ring to the pipe end.

[0026] In this embodiment, the patching mechanism 6 includes a conveyor seat 61 fixedly mounted on the top of the sliding block 42. The conveyor seat 61 has an internal cavity 611 for accommodating the protective ring. The cavity 611 is open on the side near the hot melt plate 48. A feed port 612 communicating with the interior of the cavity 611 is located at the top of the conveyor seat 61 and away from the hot melt plate 48. Through holes 613 communicating with the interior of the cavity 611 are located on both sides of the conveyor seat 61. A drive mechanism is fixedly mounted at the end of the conveyor seat 61 away from the hot melt plate 48. The piston rod of the third driving rod 62 extends into the receiving cavity 611 and is fixedly mounted with a push plate 63. In use, the third driving rod 62 moves the push plate 63 to the side of the feeding port 612 away from the opening end of the receiving cavity 611, allowing the protective ring to be fed into the receiving cavity 611 through the feeding port 612. After the pipe end is heat-fused by the hot-melt plate 48, the electromagnetic slider 43 moves the sliding block 42 closer to the pipe on the guide rail 41, driving the conveying seat 61 closer to the pipe end. When the pipe end is inserted into the receiving cavity 611... When the tube end is hot-melted, the control drive rod 62 moves the push plate 63 towards the opening of the receiving cavity 611, which pushes the protective ring located in the receiving cavity 611 to come into contact with the end of the tube, attaching the protective ring to the end of the tube after hot melting. In this embodiment, the end of the hot-melt plate 48 near the conveyor seat 61 can extend into the receiving cavity 611. When the end of the tube is hot-melted by the hot-melt plate 48, the electromagnetic slider 43 moves the sliding block 42 on the guide rail 41 closer to the tube, which in turn moves the conveyor seat 61 closer to the end of the tube, so that the hot-melt plate 48 can be hot-melted. The end of plate 48 is inserted into the receiving cavity 611. The control drive rod 62 moves the push plate 63 toward the opening end of the receiving cavity 611, which pushes the protective ring located in the receiving cavity 611 into contact with the hot melt plate 48, achieving the effect of hot melting treatment on the surface of the protective ring. After the pipe end is subsequently hot melted, when the protective ring is attached to the hot melted pipe end, the connection stability between the protective ring and the pipe end is improved, and the protection effect on the pipe end is improved. The design of the through hole 613 facilitates the penetration of the protective ring storage in the receiving cavity 611.

[0027] In this embodiment, a cleaning mechanism 7 is installed on the base 1 above the two mounting plates 52. The cleaning mechanism 7 is used to clean the dust generated during the grinding of the pipe end. By setting the cleaning mechanism 7, when the grinding mechanism 5 grinds the pipe end, the cleaning mechanism 7 cleans the dust generated during the grinding of the pipe end, effectively preventing the dust generated during the grinding of the pipe end from being emitted into the ambient air and reducing the ambient air quality.

[0028] In this embodiment, the cleaning mechanism 7 includes a negative pressure box 71 fixedly installed on the top of the base 1. Connecting brackets 111 are fixedly installed on both of the supports 11. An expansion cover 72 is fixedly installed on the connecting bracket 111 directly above the mounting plate 52. A connecting pipe 73, communicating with the interior of both expansion covers 72, is passed through the negative pressure box 71. An installation hole 711, communicating with the interior of the negative pressure box 71, is provided on the negative pressure box 71 and fixedly installed within the installation hole 711. An exhaust fan 7 is fixedly installed on the negative pressure box 71 within the installation hole 711. 4. One side of the negative pressure box 71 is open. A sealing plate 75 is hinged to the negative pressure box 71 to seal its open end. The sealing plate 75 is fixed to the negative pressure box 71 by a fastener, which facilitates fixing or unfixing the sealing plate 75 to the negative pressure box 71, and facilitates sealing or unsealing the open end of the negative pressure box 71. Inside the negative pressure box 71 and directly below the mounting hole 711, a collection box 76 with an open top is placed. A filter for sealing the mounting hole 711 is fixedly installed inside the negative pressure box 71. When in use, the exhaust fan 74 is turned on, drawing air out of the negative pressure box 71 and creating a negative pressure inside. At this time, air below the two expansion hoods 72 flows into the negative pressure box 71 through the connecting pipe 73, thus drawing in dust generated during the grinding of the pipe ends by the grinding mechanism 5. When air circulates, as air from inside the negative pressure box 71 is discharged through the mounting hole 711, the filter plate 77 filters the airborne dust, preventing dust residue from escaping. The dust remains inside the negative pressure box 71, effectively cleaning up the dust generated during the grinding of the pipe ends. Through the design of the collection box 76, the dust remaining in the negative pressure box 71 falls into the collection box 76 under its own gravity, where it is collected. When cleaning the dust collected in the negative pressure box 71, the sealing plate 75 is removed from the opening of the negative pressure box 71, allowing the collection box 76 to be removed from the negative pressure box 71, thus facilitating the treatment of the dust collected in the collection box 76.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic feeding and trimming device for composite pipes, characterized in that: include: The base has symmetrically fixed brackets with an inverted U-shaped longitudinal section on its top. A horizontal rotating shaft is rotatably installed between the two brackets. A motor connected to the rotating shaft is fixedly installed on one of the brackets. Four positioning mechanisms for positioning the pipe are installed in a ring array on the outer side wall of the rotating shaft. The guide assembly, which is fixedly mounted on the top of the base and located on one side of the two supports, is used to guide the pipe so that one of the positioning mechanisms positions the pipe. There are two connecting plates. The two connecting plates are symmetrically slidably installed on the other side of the two brackets along the axis of the first rotating shaft. An electromagnetic slider connected to the connecting plate is fixedly installed on the base. The end of the connecting plate extends to the top of the first rotating shaft and is equipped with a grinding mechanism, which is used to grind the end of the pipe. The patching mechanism has a guide rail fixedly installed on the side of the connecting plate near the bracket. A sliding block is slidably installed on the guide rail along the axis of the first rotating shaft. An electromagnetic slider two connected to the sliding block is fixedly installed on the guide rail. The patching mechanism is installed on the sliding block. The patching mechanism is used to attach protective rings to the ends of the pipes that have been polished by the polishing mechanism. A conveyor belt is fixedly installed between the opposite sides of the two brackets and directly below the first rotating shaft. It is used to transport the finished pipes. The guiding assembly includes a base plate fixedly installed on the base, and guiding units are installed in a horizontal linear array on the top of the base plate. The guiding unit includes a support frame symmetrically fixedly installed on the top of the base plate. The grinding mechanism is horizontally rotatably mounted on a second rotating shaft located on a connecting plate. The second rotating shaft is directly above the first rotating shaft. A mounting plate is mounted on the end of the second rotating shaft, and a grinding assembly for grinding the end surface of the pipe is mounted on the mounting plate. A drive assembly for driving the second rotating shaft to rotate is mounted on the connecting plate. When the grinding assembly rotates around the second rotating shaft, the end of the pipe is ground by the grinding assembly. The grinding assembly includes a hinge block hinged to one end of a mounting plate, a second motor for driving the hinge block to rotate fixedly mounted on the mounting plate, a mounting shaft rotatably mounted on the hinge block, a third motor for driving the mounting shaft to rotate fixedly mounted on the hinge block, and a grinding head that can contact the end of the pipe fixedly mounted at the end of the mounting shaft. A fixing plate is fixedly installed on the top of the connecting plate and on the side of the bracket away from the support frame. Vertical telescopic rods are symmetrically fixed on the fixing plate. Connecting blocks are fixedly installed at the bottom of the two telescopic rods. A second drive rod connected to the connecting blocks is fixedly installed on the fixing plate. A hot melt plate for hot melting the pipe end is fixedly installed at the bottom of the connecting block. The patching mechanism is used to attach a protective ring to the pipe end after hot melting. The patching mechanism includes a conveyor seat fixedly installed on the top of the sliding block. The conveyor seat has a receiving cavity for accommodating the protective ring. The receiving cavity is open on the side near the hot melt plate. The top of the conveyor seat and the end away from the hot melt plate have a feeding port that communicates with the inside of the receiving cavity. Both sides of the conveyor seat have through holes that communicate with the inside of the receiving cavity. A drive rod three is fixedly installed on the end of the conveyor seat away from the hot melt plate. The piston rod of the drive rod three extends into the receiving cavity and a push plate is fixedly installed thereon.

2. The automatic feeding and trimming device for composite pipes according to claim 1, characterized in that: The positioning mechanism includes positioning components symmetrically mounted on the outer side wall of the rotating shaft. The positioning components include connecting seats fixedly mounted on the rotating shaft. Arc-shaped clamps are symmetrically hinged to the ends of the connecting seats. A drive rod is symmetrically mounted on the connecting seats to drive the arc-shaped clamps to rotate on the connecting seats.

3. The automatic feeding and trimming device for composite pipes according to claim 2, characterized in that: An inclined guide roller is rotatably mounted on the top of the support frame, and the two guide rollers form an inverted V-shape.

4. The automatic feeding and trimming device for composite pipes according to claim 3, characterized in that: The drive assembly includes a motor four fixedly mounted on a connecting plate. A pulley one is fixedly mounted on the output shaft of the motor four. A pulley two is coaxially fixedly connected to a rotating shaft two. A transmission belt connects the pulley one and the pulley two.

5. The automatic feeding and trimming device for composite pipes according to claim 4, characterized in that: A cleaning mechanism is installed on the base and above the two mounting plates. The cleaning mechanism is used to clean the dust generated during the grinding of the pipe ends.

6. The automatic feeding and trimming device for composite pipes according to claim 5, characterized in that: The cleaning mechanism includes a negative pressure box fixedly installed on the top of the base. Connecting frames are fixedly installed on both brackets. An expansion hood is fixedly installed on the connecting frame directly above the mounting plate. A connecting pipe that communicates with the interior of both expansion hoods is connected through the negative pressure box. An installation hole communicating with the interior of the negative pressure box is opened on the negative pressure box. An exhaust fan is fixedly installed on the negative pressure box and inside the installation hole. One side of the negative pressure box is open. A sealing plate for sealing the opening end is hinged to the negative pressure box. The sealing plate is fixed to the negative pressure box by a buckle. A collection box with an open top is placed inside the negative pressure box and directly below the installation hole. A filter plate for sealing the installation hole is fixedly installed inside the negative pressure box.

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