Pipe laminating device

Abstract

The utility model discloses a pipe film covering device, and aims to solve the technical problem of blank pipe existing in the coiled material replacing process of an existing film winding machine. The case comprises two side plates, pipe holes, a first winding and a second winding; the two side plates are parallel to the partition plate; the pipe holes are coaxially formed in the side plates and the partition plate and are used for pipes to pass through; the first winding is arranged at the corresponding position of the partition plate; each of the first winding and the second winding comprises a rotating ring which is concentric with the corresponding pipe hole and is rotationally arranged, a film rolling rod fixed on one side of the rotating ring, and a guide rod which is not vertical to the rotating ring and is used for spirally winding a film body on the pipe; the first winding further comprises a plurality of guide rollers which are arranged along the circumference of the rotating ring in an array mode and used for supporting a film body between the film rolling rod and the guide rod. The device has the advantages of being high in winding efficiency, small in manual participation amount and the like.

Description

Technical Field

[0001] The present application relates to the technical field of pipe production equipment, and in particular to a pipe coating device. Background Art

[0002] In order to prevent the surface of the pipe from being worn during transportation and storage, which would affect actual sales, a film coating process is required after the pipe is formed. At present, a film wrapping machine is usually used to wrap the pipe surface with a wrapping film. Among them, the wrapping film is a packaging material with certain tensile properties, which can effectively isolate water vapor, etc., and the wrapping film is generally self-adhesive. When it comes into contact with the surface of the pipe, it sticks to the pipe wall to improve the stability of the packaging.

[0003] In the existing pipe production lines known to the inventor, the coating process is often directly located downstream of the pipe casting process, and the continuously cast pipes are coated by the film winding machine. The coated pipes enter the downstream of the film winding machine and are cut into corresponding lengths according to production specifications. In this process, since the length of the wrapping film installed at the film winding machine is limited, and the pipes are continuously cast, the film winding machine must be stopped to replace the film roll after the wrapping film is wound. As a result, the formed pipes are not coated during the film roll replacement, and there is a problem of film gaps, which requires subsequent manual inspection and additional film coating of the pipes, reducing production efficiency.

[0004] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Summary of the invention

[0005] In view of at least one of the above technical problems, the present disclosure provides a tube coating device, aiming to solve the technical problem of empty tubes in the process of replacing coils in the existing film winding machine.

[0006] According to one aspect of the present disclosure, there is provided a tube coating device, comprising a chassis with a partition inside, and the chassis comprises two side plates parallel to the partition, tube holes coaxially opened at the side plates and the partition and used for the tube to pass through, a first winding arranged at a corresponding position of the partition, and a second winding arranged at a corresponding position of the side plate on the inlet side of the tube; the first winding and the second winding respectively comprise a swivel concentric with the corresponding tube hole and rotatably arranged, a film rolling rod fixed to one side of the swivel, and a guide rod non-perpendicularly arranged to the swivel and used for spirally winding the film body around the tube; the first winding also comprises a plurality of guide rollers arranged in an array along the circumference of the swivel and used for supporting the film body between the film rolling rod and the guide rod, and the arc length of the swivel of the first winding corresponding to the film rolling rod, the guide roller and the guide rod is not less than the spacing between the first winding and the second winding.

[0007] In some embodiments of the present disclosure, the diameter of the tube hole is larger than the diameter of the tube to be coated, and the inner diameter of the ring body of the swivel is not smaller than the diameter of the tube hole.

[0008] In some embodiments of the present disclosure, the tube coating device further includes a motor for driving the rotating rings respectively, and the motors are belt-driven or chain-driven on the rotating rings.

[0009] In some embodiments of the present disclosure, the tube coating device also includes photoelectric sensors for detecting the film body, which are respectively arranged at the edge of the swivel between the film winding rod and the adjacent guide roller of the first winding and at the edge of the swivel between the film winding rod and the guide rod of the second winding.

[0010] In some embodiments of the present disclosure, the pipe coating device further includes a power supply slip ring between the rotating ring and the corresponding partition plate or side plate for supplying power to the photoelectric sensor.

[0011] In some embodiments of the present disclosure, the tube coating device further includes an alarm for prompting replacement of the film roll.

[0012] In some embodiments of the present disclosure, the tube coating device further comprises a push rod fixed relative to the chassis and used for pushing the initial film body of the film roll to contact the tube to be coated.

[0013] In some embodiments of the present disclosure, the push rod includes a telescopic rod body, a push roller disposed at the telescopic end of the telescopic rod body, and a U-shaped frame disposed below the push roller for penetrating the membrane body.

[0014] In some embodiments of the present disclosure, the tube coating device further includes a controller for controlling the corresponding start and stop of the first winding and the second winding and the corresponding action of the push rod according to the detection information of the light spot sensor.

[0015] One or more technical solutions provided in the embodiments of the present application have at least any of the following technical effects or advantages:

[0016] 1. The first winding and the second winding run alternately, so as to adapt to the uninterrupted production of the extended pipe, avoid the film coating gap, and at the same time allow the operator to have sufficient film roll replacement time to ensure the reliability of coating.

[0017] 2. A plurality of guide rollers arranged in an array at the first winding can ensure that after the film roll of the first winding is used up, the first winding can still be wound and coated for a certain length, thereby compensating for the problem of partial tube coating vacancies caused by the distance difference between the first winding and the second winding.

[0018] 3. Photoelectric sensors can replace manpower to monitor the use of film rolls in real time, thereby releasing labor and improving the degree of automation of device operation.

[0019] 4. The push rod can automatically attach the membrane to the pipe when the first winding and the second winding start working, eliminating manual intervention and improving the efficiency and convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial structural schematic diagram of a tube coating device in one embodiment of the present application.

[0021] Figure 2 Schematic diagram of a partial structure of the first winding in one embodiment of the present application.

[0022] Figure 3 Schematic diagram of a partial structure of the second winding in one embodiment of the present application.

[0023] Figure 4 Schematic diagram of the use status of the second winding in one embodiment of the present application.

[0024] Figure 5 Schematic diagram of the usage status of the first winding in one embodiment of the present application.

[0025] Figure 6 Schematic diagram of the structure of a push rod in one embodiment of the present application.

[0026] Figure 7 This is a schematic diagram of the use status of the push rod in one embodiment of the present application.

[0027] In the above figures, 1 is a chassis, 11 is a side plate, 12 is a partition, 13 is a pipe hole, 2 is a first winding, 21 is a first winding swivel, 22 is a first winding film winding rod, 23 is a first winding guide rod, 24 is a guide roller, 3 is a second winding, 31 is a second winding swivel, 32 is a second winding film winding rod, 33 is a second winding guide rod, 4 is a photoelectric sensor, 5 is a push rod, 51 is a telescopic rod body, 52 is a push roller, 53 is a U-shaped frame, and 6 is a wrapping film body. DETAILED DESCRIPTION

[0028] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", etc. involved in the present application are used to distinguish the objects described and do not have any order or technical meaning.

[0030] In order to solve the technical problem that some pipes cannot be coated during the idle period of replacing the film roll in the existing pipe coating device, and need to be manually inspected and coated manually later, resulting in low efficiency. Figure 1 , which includes a chassis, Figure 1 The cover plates on the front and rear sides of the chassis are not shown, and the pipes are wrapped with the winding film in the chassis. Specifically, the chassis 1 includes two parallel side panels 11, and the inside of the chassis 1 is provided with a partition 12 parallel to the two side panels 11, thereby dividing the box into two working spaces through the partition 12, and the pipe wrapping operation is alternately performed in the two working spaces, so that when the wrapping operation is performed in one space, the film roll is allowed to be replaced in the other space, and the two spaces are thus wrapped in relay, which can effectively solve the problem that there is a gap in the replacement of the film roll, which causes some pipes to be unable to be wrapped.

[0031] Specifically, to ensure that the pipe can pass through the pipe coating device, see Figure 1 , a tube hole 13 for the tube to pass through is coaxially opened at the side panels 11 on both sides of the chassis 1 and the middle partition 12. The tube is continuously extended after being cast by the injection molding machine, and passes through the tube film coating device through the tube hole 13 to achieve wrapping with a wrapping film. In this embodiment, the diameter of the tube hole 13 is larger than the maximum coating working diameter designed for the device, so that the tube can pass smoothly without obstruction, avoiding contact wear between the tube and the tube hole.

[0032] In order to realize the film coating of the pipe, see Figure 1 The two working spaces are correspondingly provided with a first winding 2 and a second winding 3 for realizing the coating operation. The first winding 2 and the second winding 3 respectively include a swivel that rotates relative to the circumference of the pipe to be coated, and a film rolling rod for placing the film roll and a guide rod for changing the direction of the film body to realize spiral winding of the film body on the pipe are fixed at the swivel. Therefore, the spiral coating of the winding film body on the surface of the pipe is realized by the rotation of the swivel around the pipe.

[0033] See Figure 2 The first winding 2 includes a first winding rotating ring 21, see Figure 1 , the first winding swivel 21 is arranged at the partition 12, and is arranged concentrically with the tube hole at the partition 12, so that the swivel can rotate around the tube extending in the tube hole. In addition, in this embodiment, the inner diameter of the swivel is not less than the diameter of the tube hole, thereby avoiding interference between the inner edge of the swivel and the tube, which affects the normal operation of the device. In order to realize the rotation of the swivel, the swivel is connected to the partition 12 by a bearing so as to rotate relative to it, and a pulley is fixed on the side of the swivel close to the partition, so that it can be driven by a motor through a belt. In some other embodiments, the swivel is also driven by a motor, but a chain transmission is adopted between the swivel and the motor.

[0034] A first winding film rolling rod 22 is fixedly provided on the other side of the first winding 2 rotating ring. The film rolling rod is used to install the film roll. In this example, the film rolling rod is fixedly provided perpendicular to the rotating ring surface. Since the film rolling rod is perpendicular to the rotating ring surface, that is, the film rolling rod is parallel to the axis of the pipe to be coated, as the pipe continues to extend, if the film roll is directly attached to the pipe surface, the film body will be pulled and deformed, and wrinkles will be formed on the pipe surface, which cannot ensure the beauty and the integrity of the coating. For this reason, a first winding guide rod 23 is provided, and the rod body axial direction of the guide rod 23 is not perpendicular to the rotating ring surface. In this example, the guide rod is tilted outwardly to the rotating ring at a certain angle, so that after the film body is pulled out from the film roll, the guide rod 23 is turned, so that there is a certain angle between the film body and the axis of the pipe to be coated, thereby realizing the spiral winding of the winding film body on the pipe surface layer by layer, the coating is beautiful and the pipe can be completely coated. In some other embodiments, in order to adjust the angle between the membrane and the axis of the pipe to be processed, thereby adjusting the density of the film winding on the surface of the pipe, in this example, the guide rod is fixedly connected to the swivel through a guide seat, wherein the guide seat and the swivel are fixedly arranged, and the guide rod end is provided with an external tooth in a circular array, and the guide seat is provided with an internal tooth at the corresponding installation position, and the guide angle of the guide rod is adjusted by adjusting the tooth engagement between the guide seat and the guide rod.

[0035] Similarly, similar to the first winding 2 above, see Figure 3 The second winding 2 includes a second winding swivel 31, a second winding film winding rod 32 and a second winding guide rod 33. The second winding swivel 31 is arranged at the side plate at the entrance of the pipe through a bearing, and is rotatably arranged concentrically with the pipe hole at the side plate. Similarly, the second winding film winding rod 32 is arranged perpendicular to its swivel, and the second winding guide rod 33 is tilted outward at a certain angle to achieve spiral winding of the film body on the surface of the pipe. In some other embodiments, the guide angle of the second winding guide rod is adjustable.

[0036] Since there is a certain interval between the first winding 2 and the second winding 3, after the film roll of the second winding 3 is used up, the first winding 2 starts working immediately, which can ensure that there is no gap in the outer film of the pipe; however, after the film roll of the first winding 2 is used up, the second winding 3 is wound immediately, which can no longer ensure that there is no gap in the outer film of the pipe. Therefore, in this embodiment, see Figure 2 A plurality of guide rollers 24 are arranged along the circumference at the rotating ring of the first winding 2. In this example, each guide roller 24 is arranged perpendicular to the rotating ring 21 of the first winding. After the film body at the film rolling rod has passed through each guide roller 24, it is guided by the first winding guide rod 23 and wrapped around the outside of the pipe. Therefore, after the film body at the film roll is used up, the second winding 3 is started immediately. Since a certain length of film body is stored between the film rolling rod and the guide rod of the first winding through a plurality of guide rollers 24, when the second winding starts to wrap, this section of film body continues to wrap, and connects with the film body wrapped by the second winding as the pipe extends, thereby ensuring that there is no missing section in the pipe coating when the two windings are switched. In addition, in the present embodiment, the arc length of the corresponding rotating ring covered by the film winding rod at the first winding 2 and each guide roller and guide rod is not less than the distance between the first winding 2 and the second winding 3. That is to say, it is ensured that after the film body at the film winding rod of the first winding is used up, the length of the film body that can still be used at the first winding is greater than the distance between the two windings, so that the film body at the first winding can be effectively connected with the film body wound by the second winding, avoiding the existence of film covering gaps.

[0037] In this embodiment, in order to avoid the problem of low efficiency and poor reliability caused by manual observation of the use of the two winding membranes. Figure 4 and Figure 5 In this example, photoelectric sensors are respectively arranged at the first winding swivel 21 and the second winding swivel 31, wherein the photoelectric sensor of the first winding is arranged between the first winding film rolling rod and the guide roller adjacent to the film rolling rod, and aims at the film body between the film rolling rod and the guide roller adjacent to it. Thus, by judging whether there is a film body between the film rolling rod and the guide roller through the photoelectric sensor, it can be judged whether the film roll at the film rolling rod has been used up. Similarly, the photoelectric sensor of the second winding is arranged between the second winding film rolling rod and the guide rod, and aims at the film body between the film rolling rod and the guide rod, thereby realizing the judgment whether the film roll has been used up. Specifically, in this embodiment, a photoelectric sensor of model G4-A1KN is used, which can accurately identify transparent films with high precision, thereby ensuring that transparent wrapping films can be accurately identified and avoiding problems such as false alarms.

[0038] Taking into account that the swivel rotates around the circumference of the pipe to be coated during operation, and the operation of the photoelectric sensor requires a corresponding voltage supply, in this embodiment, a power supply slip ring is provided between the swivel and the corresponding partition plate or side plate, thereby avoiding wiring and causing the wires to become entangled as the swivel rotates. In this example, the power supply slip ring realizes power transmission in a rotating state through the brushes inside it, thereby ensuring a stable power supply for the photoelectric sensor.

[0039] In addition, in this embodiment, in order to remind the staff to replace the film roll of the first winding or the second winding immediately after use, in this embodiment, the coating device also includes an alarm. After the corresponding film roll is used up, the alarm makes a sound and / or light alarm. After the replacement is completed, the staff can press the reset button to eliminate the alarm.

[0040] However, the staff may replace the film roll in advance. In order to ensure that the newly replaced film roll can be attached to the pipe surface without human operation, in this embodiment, see Figure 4 and Figure 5 A push rod 5 is fixedly arranged at the chassis, and the film body attached to the end of the push rod is attached to the pipe to be coated by the extension and retraction of the push rod 5. In this example, the axial direction of the push rod 5 is toward the axis of the pipe, so that after the push rod 5 is extended, the film body at its end can just stick to and contact the pipe to be coated.

[0041] The specific structure of the push rod 5 is shown in Figure 6 and Figure 7 Specifically, the push rod 5 includes a telescopic rod body 51, a push roller 52 and a U-shaped frame 53. The telescopic rod body 51 is telescopic, so that it is extended at the initial moment when the corresponding winding starts working, and the film body to be coated is guided to adhere to the surface of the pipe and then recovered, thereby avoiding position interference between the push rod and other structures of the winding, thereby avoiding damage. The push roller 52 is mounted at the movable end of the telescopic rod body 51 through a push roller frame. The push roller 52 can rotate relative to the push roller frame, thereby reducing the contact friction between the film body and the roller body. However, in order to realize the placement of the film body at the push roller 52, a U-shaped frame 53 is provided below the push roller 52, see Figure 7, the membrane body is passed through the U-shaped frame 53 to be arranged, so as to achieve the purpose of temporarily placing the membrane body at the push rod. In some other embodiments, the telescopic rod body 51 adopts an electric push rod, but considering that the thickness of the membrane body is extremely small, in order to ensure that the push rod can be extended to the right position without damaging the pipe, in this example, the push roller frame of the push roller and the end of the telescopic rod body are movably connected by a sleeve, and a spring is provided outside the sleeve, and the two ends of the spring are respectively fixed to the push roller frame and the telescopic rod body. Therefore, when the push roller reaches the pipe, the spring is deformed by force, and the sleeve slides relatively along the axial direction, so that the push roller 52 can be extended and retracted within the deformation range of the spring, thereby avoiding hard contact between the push roller and the pipe, resulting in damage to the pipe. In addition, in this embodiment, the U-shaped frame 53 includes two side frame rods and a bottom rod that are opposite and parallel, wherein the two side frame rods and the bottom rod are non-vertically arranged to adapt to the membrane body passing through obliquely.

[0042] In addition, in order to realize the alternating operation between the first winding 2 and the second winding 3, the device also includes a controller, in this example, a PLC is used, and the photoelectric sensor and the alarm are respectively connected to the PLC for communication. When the device is in use, the film roll is first installed at the first winding, and then the film roll film body is passed through each guide roller and guide rod in turn, and then the angle of the swivel is adjusted so that the film body passes through the U-shaped frame at the side push rod. Similarly, a film roll is installed at the second winding, and then the film body of the film roll is passed around the guide rod and then through the U-shaped frame at the push rod beside it; then after the pipe enters the working range of the first winding, the first winding is started for winding. When the first winding is started, the push rod is first extended to attach the film body to the surface of the pipe, and the push rod is immediately retracted after the rotating ring starts to rotate, and the first winding starts the film coating operation. During the operation of the first winding, the photoelectric sensor of the first winding monitors in real time whether there is a film body passing within its monitoring range. After it detects that there is no film body within its monitoring range, the PLC triggers the alarm to remind the staff to replace it, and at the same time starts the second winding for film winding. After the staff replaces it, they press the reset button, and the PLC cancels the alarm. Similarly, when the second winding is working, the push rod first pushes out the film body to attach it to the surface of the pipe, and when the rotating ring starts to rotate, the push rod is immediately retracted, and the second winding starts to coat the film; during the operation of the second winding, the photoelectric sensor of the second winding monitors in real time whether there is a film body passing within its monitoring range. After it detects that there is no film body within its monitoring range, the PLC triggers the alarm to remind the staff to replace it, and at the same time starts the first winding for film winding. After the staff replaces it, they press the reset button, and the PLC cancels the alarm. This cycle realizes uninterrupted coating of the pipe.

[0043] Although some preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the inventive concept. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A pipe coating device, characterized in that: The invention comprises a case with a partition inside, and the case comprises two side plates parallel to the partition, a tube hole coaxially opened at the side plates and the partition for the tube to pass through, a first winding arranged at a corresponding position of the partition, and a second winding arranged at a corresponding position of the side plate on the tube inlet side; the first winding and the second winding respectively comprise a rotating ring which is coaxial with the corresponding tube hole and rotatably arranged, a film rolling rod fixed to one side of the rotating ring, and a guide rod which is arranged non-perpendicularly to the rotating ring and is used for the film body to be spirally wound around the tube; The first winding also includes a plurality of guide rollers arranged in a circular array along the circumference of its rotating ring and used to support the film body between its film winding rod and the guide rod. The arc length of the rotating ring of the first winding corresponding to the film winding rod, the guide rollers and the guide rod is not less than the spacing between the first winding and the second winding.

2. The pipe coating device according to claim 1, characterized in that: The diameter of the tube hole is larger than the diameter of the tube to be coated, and the inner diameter of the ring body of the swivel is not smaller than the diameter of the tube hole.

3. The pipe coating device according to claim 1, characterized in that: It also includes motors for driving the rotating rings respectively, and the motors are belt-driven or chain-driven on the rotating rings.

4. The pipe coating device according to claim 1, characterized in that: It also includes photoelectric sensors which are respectively arranged at the edge of the rotating ring between the film winding rod of the first winding and the adjacent guide roller and at the edge of the rotating ring between the film winding rod of the second winding and the guide rod and are used to detect the film body.

5. The pipe coating device according to claim 4, characterized in that: It also includes a power supply slip ring between the rotating ring and the corresponding partition plate or side plate for supplying power to the photoelectric sensor.

6. The pipe coating device according to claim 4, characterized in that: Also included is an alarm to prompt replacement of the film roll.

7. The pipe coating device according to claim 4, characterized in that: It also includes a push rod which is relatively fixed to the chassis and is used to push the initial film body of the film roll to contact the pipe to be coated.

8. The pipe coating device according to claim 7, characterized in that: The push rod comprises a telescopic rod body, a push roller arranged at the telescopic end of the telescopic rod body, and a U-shaped frame arranged below the push roller and used for penetrating the film body.

9. The pipe coating device according to claim 7, characterized in that: It also includes a controller for controlling the corresponding start and stop of the first winding and the second winding and the corresponding action of the push rod according to the detection information of the photoelectric sensor.

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