Steel pipe rubber coating and feeding assembly

Abstract

The utility model discloses a steel pipe rubber coating and feeding assembly, which comprises a plastic extruding machine, a feeding mechanism, a feeding mechanism, a feeding mechanism, a feeding mechanism and a feeding mechanism, and is characterized in that the plastic extruding machine is provided with an annular plastic extruding head which is provided with a conveying channel for steel pipes to pass through; the first conveying device is arranged on the upstream of the plastic extruding machine, and the first conveying device is provided with a first conveying path in butt joint with the conveying channel; the second conveying device is arranged on the upstream of the first conveying device, the second conveying device is provided with a second conveying path in butt joint with the conveying channel, and the conveying speed of the second conveying device is adjustable; and the tumbling frame is arranged between the first conveying device and the second conveying device, the tumbling frame is provided with a tumbling channel used for storing a plurality of sleeve heads, a limiting plate is arranged at the tail end of the tumbling channel, and the limiting plate forms limiting spaces which are in butt joint with the first conveying path and the second conveying path correspondingly. Compared with the prior art, two steel pipes can be assembled without manual operation, the station of at least one worker can be released, the labor cost is effectively reduced, and a technical basis is provided for automatic production.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel pipe production, especially steel pipe rubber coating feeding assembly. BACKGROUND

[0002] Steel pipes are widely used in many fields. In the construction industry, steel pipes are often used in structural support, beams, columns and other parts, which can bear large loads. In the chemical industry, steel pipes are often used to transport various chemical media such as acid and alkali due to their corrosion resistance, high temperature resistance and pressure resistance. In the transportation industry, steel pipes are used in the construction of highway guardrails, bridges and tunnels, with high strength and safety.

[0003] Although steel pipes can be made of stainless steel materials and have certain corrosion resistance, for some special working environments, such as high acid and high alkali environments, rubber-coated steel pipes are needed. Rubber-coated steel pipes not only effectively broaden the application scenarios of steel pipes, but also can be painted on the surface of steel pipes to enhance the aesthetic appeal.

[0004] During production, a layer of plastic is wrapped around the steel pipe after passing through the extrusion head of the extruder. Since the extrusion head maintains continuous discharge, it is necessary to splice the adjacent two steel pipes together to form a continuous workpiece, otherwise the molten plastic extruded by the extrusion head will accumulate at the end of the steel pipe, forming a redundant structure and affecting the normal rubber coating of the next steel pipe.

[0005] Currently, the rubber coating process of steel pipes requires the participation of workers. After the upstream steel pipe is fed, the worker needs to use a sleeve to fit on the end of the steel pipe and connect the sleeve with the next steel pipe to form a continuous workpiece. Since the existing technology requires workers to manually install the sleeve every time the material is fed and manually remove the sleeve every time the material is discharged, at least two workers are needed on a production line, resulting in high labor costs. INVENTION CONTENTS

[0006] The utility model aims at providing a steel pipe rubber coating feeding assembly which can save labor costs.

[0007] The steel pipe rubber coating feeding assembly according to the first aspect of the utility model comprises:

[0008] an extruder provided with a ring-shaped extrusion head, the ring-shaped extrusion head having a conveying channel for the steel pipe to pass through, and the ring-shaped extrusion head extruding plastic towards the steel pipe beyond the conveying channel;

[0009] a first conveying device provided upstream of the extruder, the first conveying device having a first conveying path connected to the conveying channel;

[0010] A second conveying device is arranged upstream of the first conveying device, the second conveying device having a second conveying path that is connected to the conveying channel, and the conveying speed of the second conveying device is adjustable;

[0011] A rolling frame is arranged between the first conveying device and the second conveying device, the rolling frame being provided with a rolling channel for storing a plurality of sleeves, and an end of the rolling channel is provided with a limiting plate, the limiting plate forming a limiting space for limiting the position of the sleeves, and the limiting space is connected to the first conveying path and the second conveying path, respectively.

[0012] The steel pipe rubber coating feeding assembly has at least the following beneficial effects: during production, the upstream steel pipe moves in the direction of the annular extrusion head under the conveying of the second conveying device and the first conveying device, when the upstream steel pipe passes through the rolling frame, a position vacancy appears in the limiting space at this time, and the plurality of sleeves on the rolling channel move to the limiting space under the action of gravity until one sleeve rolls into the limiting space, at this time, the downstream steel pipe is conveyed by the second conveying device, and since the conveying speed of the second conveying device is adjustable, the conveying speed of the downstream steel pipe is set to be greater than the conveying speed of the upstream steel pipe, in the conveying process of the downstream steel pipe, the downstream steel pipe first connects with the sleeve in the limiting space, then the downstream steel pipe drives the sleeve to chase the upstream steel pipe, and finally the sleeve of the downstream steel pipe is connected to the upstream steel pipe under the conveying of the second conveying device, so as to realize automatic assembly of the two adjacent steel pipes, once the two steel pipes are assembled, the conveying speed of the second conveying device is set to be equal to the conveying speed of the first conveying device, until the downstream steel pipe passes through the second conveying device; compared with the prior art, the steel pipe rubber coating feeding assembly does not need to manually realize assembly of the two steel pipes, can release at least one worker's station, effectively reduces labor cost, and provides a technical basis for automatic production.

[0013] According to some embodiments of the present application, the sleeve includes a bearing platform and a boss, the boss penetrates the bearing platform and extends to both sides of the bearing platform, the outer diameter of the bearing platform is greater than the inner diameter of the steel pipe, and the outer diameter of the boss is not greater than the inner diameter of the steel pipe. The two ends of the boss are respectively used for inserting into the interiors of the two steel pipes, and the bearing platform is used for spacing the two steel pipes for subsequent separation.

[0014] According to some embodiments of the present application, the rolling channel is provided with a groove for supporting the bearing platform, the groove does not extend to the limiting space, so that the sleeve can roll into the limiting space along the setting direction of the groove, and the movement of the sleeve is avoided from interfering with the groove during connection.

[0015] According to some embodiments of the utility model, the limiting plate is a magnet material, the bearing platform is a magnetic material, and the boss is a non-magnetic material. When the sleeve head rolls onto the limiting plate, the limiting plate magnetically attracts the bearing platform to magnetically constrain the bearing platform in the limiting space, thereby limiting the position of the sleeve head.

[0016] According to some embodiments of the utility model, specifically, the first conveying device is provided with a first upper conveying belt and a first lower conveying belt, and the first upper conveying belt and the first lower conveying belt form the first conveying path.

[0017] According to some embodiments of the utility model, in order to adapt to steel pipes of different sizes, the first upper conveying belt is connected with a first lifting mechanism, and the first lifting mechanism is used for adjusting the up-down distance between the first upper conveying belt and the first lower conveying belt.

[0018] According to some embodiments of the utility model, the first upper conveying belt or the first lower conveying belt is driven by a first power source. When the first upper conveying belt and the first lower conveying belt jointly clamp the steel pipe, only the first upper conveying belt or the first lower conveying belt needs to have power, and effective conveying of the steel pipe can be realized.

[0019] According to some embodiments of the utility model, specifically, the second conveying device is provided with a second upper conveying belt and a second lower conveying belt, and the second upper conveying belt and the second lower conveying belt form the second conveying path.

[0020] According to some embodiments of the utility model, in order to adapt to steel pipes of different sizes, the second upper conveying belt is connected with a second lifting mechanism, and the second lifting mechanism is used for adjusting the up-down distance between the second upper conveying belt and the second lower conveying belt.

[0021] According to some embodiments of the utility model, the second upper conveying belt or the second lower conveying belt is driven by a second power source. When the second upper conveying belt and the second lower conveying belt jointly clamp the steel pipe, only the second upper conveying belt or the second lower conveying belt needs to have power, and effective conveying of the steel pipe can be realized.

[0022] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0024] Figure 1is a stereogram structure schematic diagram of the steel pipe rubber coating feeding assembly provided by the embodiment of the utility model;

[0025] Figure 2 is Figure 1 the front view of the steel pipe rubber coating feeding assembly shown in the figure;

[0026] Figure 3 is a stereogram structure schematic diagram of the sleeve head provided by the embodiment of the utility model;

[0027] Figure 4 is a stereogram structure schematic diagram of the rolling frame provided by the embodiment of the utility model;

[0028] Figure 5 is a side view of the plurality of sleeve heads on the rolling frame provided by the embodiment of the utility model.

[0029] In the drawings: 100-extruding machine, 200-first conveying device, 300-second conveying device, 400-rolling frame, 500-steel pipe, 110-ring extruding head, 120-supporting rod, 600-sleeve head, 610-bearing platform, 620-boss, 210-first rack, 220-first upper conveying belt, 230-first lower conveying belt, 201-conveying belt, 310-second rack, 320-second upper conveying belt, 330-second lower conveying belt, 410-supporting frame, 420-rolling channel, 430-limiting plate, 421-groove, 431-limiting space. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0031] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation of the utility model.

[0032] In the description of the utility model, if several means one or more, the meaning of multiple is more than two, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described to the first, second, it is only used for distinguishing the purpose of technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0033] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood in a broad sense, and the skilled person in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0034] As shown in Figure 1 and Figure 2 The steel pipe rubber coating feeding assembly according to the first aspect embodiment of the utility model comprises an extruding machine 100, a first conveying device 200, a second conveying device 300 and a rolling frame 400, taking the conveying direction of the steel pipe 500 as the reference, the second conveying device 300, the rolling frame 400, the first conveying device 200 and the extruding machine 100 are sequentially arranged along the conveying direction, at this time, the second conveying device 300 is located at the most upstream of the conveying direction, and the extruding machine 100 is located at the most downstream of the conveying direction.

[0035] Specifically, since the internal structure of the extruding machine 100 is not improved in the utility model, the extruding machine 100 can be used as prior art, which heats the plastic particles to a molten state and continuously extrudes the molten plastic at the extruding head. Since the utility model needs to coat the outer surface of the steel pipe 500, the extruding head can be selected as a ring-shaped extruding head 110, the ring-shaped extruding head 110 has a conveying passage for the steel pipe 500 to pass through, and the ring-shaped extruding head 110 continuously extrudes plastic towards the steel pipe 500 passing through the conveying passage. When the steel pipe 500 is conveyed to pass through the conveying passage, the ring-shaped extruding head 110 is provided with a ring-shaped extruding groove to output the molten plastic on the outer surface of the steel pipe 500, and with the continuous movement of the steel pipe 500, the plastic gradually wraps the entire steel pipe 500. In order to support the position of the ring-shaped extruding head 110, the ring-shaped extruding head 110 is connected with a support rod 120 supported on the ground, so as to avoid deformation of the ring-shaped extruding head 110 due to gravity after long-term use.

[0036] It should be noted that a cooling water tank (not shown in the drawing) is arranged at the downstream position of the extruding machine 100, and the steel pipe 500 wrapped with plastic is cooled in the cooling water tank, the temperature of the plastic is lowered to accelerate the solidification of the plastic, so that the plastic is attached to the outer surface of the steel pipe 500.

[0037] Since the annular extrusion head 110 needs to keep continuous discharging, once one of the steel pipes 500 is finished with rubber coating, if the other steel pipe 500 does not keep up in time, a processing gap will be formed between the two steel pipes 500, and the plastic extruded by the annular extrusion head 110 will be accumulated at the end of the last steel pipe 500 to form a redundant structure. When the next steel pipe 500 passes through the conveying channel, the redundant structure cools and hardens, thereby hindering the conveying of the next steel pipe 500, so that the plastic cannot completely wrap the outer surface of the steel pipe 500, thereby producing defective products. Therefore, it is necessary to completely avoid the formation of a processing gap, that is, for two adjacent steel pipes 500, the two adjacent steel pipes 500 must be end-to-end assembled by the sleeve head 600 to form a continuous workpiece.

[0038] As shown in Figure 3 , the sleeve head 600 includes a bearing platform 610 and a boss 620, the boss 620 penetrates the center of the bearing platform 610 and extends to both sides of the bearing platform 610 to form a stepped structure on both sides of the bearing platform 610. The outer diameter of the bearing platform 610 is greater than the inner diameter of the steel pipe 500, and the outer diameter of the boss 620 is not greater than the inner diameter of the steel pipe 500. In this embodiment, the outer diameter of the bearing platform 610 is equal to the outer diameter of the steel pipe 500, and the outer diameter of the boss 620 is equal to the inner diameter of the steel pipe 500. When it is necessary to realize the assembly of two adjacent steel pipes 500, the two ends of the boss 620 are inserted into the interiors of the two steel pipes 500, and the bearing platform 610 is used to space apart the two steel pipes 500, at this time, the first and last ends of the two adjacent steel pipes 500 are connected by the sleeve head 600 to form a continuous workpiece.

[0039] As shown in Figure 1 and Figure 2 , in order to realize the automatic assembly of two adjacent steel pipes 500, the utility model is provided with two conveying devices, which are a first conveying device 200 and a second conveying device 300, and a rolling frame 400 is arranged between the first conveying device 200 and the second conveying device 300. The first conveying device 200 includes a first rack 210, a first upper conveying belt 220 and a first lower conveying belt 230, and the first upper conveying belt 220 and the first lower conveying belt 230 are both mounted on the first rack 210. The first upper conveying belt 220 and the first lower conveying belt 230 both include a driving pulley, a driven pulley and a conveying belt 201, the driving pulley and the driven pulley are remotely driven by the conveying belt 201, when the driving pulley is driven to rotate, the driving pulley can drive the conveying belt 201 to rotate, at this time, the driven pulley is passively rotated.

[0040] The first upper conveying belt 220 is located directly above the first lower conveying belt 230, and the two are spaced apart in an up-down direction. A first conveying path is formed between the first upper conveying belt 220 and the first lower conveying belt 230. The first upper conveying belt 220 and the first lower conveying belt 230 jointly convey the steel pipe 500 to drive the steel pipe 500 to move along the first conveying path. The first conveying path is connected to the conveying channel, so that the steel pipe 500 can be conveyed to the conveying channel along the first conveying path under the drive of the first conveying device 200, thereby realizing the rubber coating of the steel pipe 500.

[0041] Further, in order to adapt to steel pipes 500 of different sizes, the first upper conveying belt 220 is connected with a first lifting mechanism (not shown in the drawings), while the position of the first lower conveying belt 230 remains unchanged. The first lifting mechanism can be a screw-nut block lifting mechanism, which realizes the up-down movement of the nut block through the rotation of the screw. The nut block is fixedly connected with the base plate of the first upper conveying belt 220, thereby realizing the up-down lifting of the first upper conveying belt 220. When the size of the steel pipe 500 is greater than the distance between the first upper conveying belt 220 and the first lower conveying belt 230, the distance between the first upper conveying belt 220 and the first lower conveying belt 230 can be expanded through the first lifting mechanism, and the conveying belts 201 of the first upper conveying belt 220 and the first lower conveying belt 230 are both abutted against the steel pipe 500, and the steel pipe 500 is simultaneously subjected to the friction of the two conveying belts 201. When the size of the steel pipe 500 is smaller than the distance between the first upper conveying belt 220 and the first lower conveying belt 230, the distance between the first upper conveying belt 220 and the first lower conveying belt 230 can be reduced through the first lifting mechanism, and the conveying belts 201 of the first upper conveying belt 220 and the first lower conveying belt 230 are both abutted against the steel pipe 500, and the steel pipe 500 is simultaneously subjected to the friction of the two conveying belts 201.

[0042] Subsequently, when the first upper conveying belt 220 and the first lower conveying belt 230 jointly clamp the steel pipe 500, only the first upper conveying belt 220 or the first lower conveying belt 230 needs to be powered, so as to realize the effective conveying of the steel pipe 500. That is, one of the first upper conveying belt 220 and the first lower conveying belt 230 is driven by the first power source, and the other can be set to a free state, thereby simplifying the structure and saving manufacturing costs. Of course, the first upper conveying belt 220 and the first lower conveying belt 230 can also be driven by respective power sources, which is not limited to the above embodiment.

[0043] In some other embodiments, the first lifting mechanism can also be connected to the first lower conveying belt 230, and the position of the first upper conveying belt 220 remains unchanged. However, the bottom surface of the steel pipe 500 is generally used as the positioning reference, and if the first lifting mechanism is connected to the first lower conveying belt 230, the positioning reference of the steel pipe 500 will be changed. Therefore, the present embodiment is only an optional embodiment, but not a preferred embodiment.

[0044] In addition, the second conveying device 300 comprises a second rack 310, a second upper conveying belt 320 and a second lower conveying belt 330, and the second upper conveying belt 320 and the second lower conveying belt 330 are both installed on the second rack 310. The second upper conveying belt 320 and the second lower conveying belt 330 both comprise a driving pulley, a driven pulley and a conveying belt 201, and the driving pulley and the driven pulley are remotely driven by the conveying belt 201. When the driving pulley is driven to rotate, the driving pulley can drive the conveying belt 201 to rotate, and the driven pulley is passively rotated at this time.

[0045] The second upper conveying belt 320 is located directly above the second lower conveying belt 330, and the two are arranged in an up-down manner, and a second conveying path is formed between the second upper conveying belt 320 and the second lower conveying belt 330. The second upper conveying belt 320 and the second lower conveying belt 330 jointly convey the steel pipe 500 to drive the steel pipe 500 to move along the second conveying path. The second conveying path is connected to the conveying channel, so that the steel pipe 500 can be conveyed along the second conveying path to the conveying channel under the driving of the second conveying device 300, and then the rubber coating of the steel pipe 500 is realized.

[0046] Further, in order to adapt to different sizes of the steel pipe 500, the second upper conveying belt 320 is connected with a second lifting mechanism (not shown in the drawings), while the position of the second lower conveying belt 330 remains unchanged. The second lifting mechanism can be a screw-nut block lifting mechanism, which realizes the up-and-down movement of the nut block through the rotation of the screw, and the nut block is fixedly connected with the base plate of the second upper conveying belt 320, thereby realizing the up-and-down lifting of the second upper conveying belt 320. When the size of the steel pipe 500 is greater than the distance between the second upper conveying belt 320 and the second lower conveying belt 330, the distance between the second upper conveying belt 320 and the second lower conveying belt 330 can be expanded through the second lifting mechanism, and the conveying belts 201 of the second upper conveying belt 320 and the second lower conveying belt 330 are both abutted against the steel pipe 500, and the steel pipe 500 is simultaneously subjected to the friction of the two conveying belts 201. When the size of the steel pipe 500 is smaller than the distance between the second upper conveying belt 320 and the second lower conveying belt 330, the distance between the second upper conveying belt 320 and the second lower conveying belt 330 can be reduced through the second lifting mechanism, and the conveying belts 201 of the second upper conveying belt 320 and the second lower conveying belt 330 are both abutted against the steel pipe 500, and the steel pipe 500 is simultaneously subjected to the friction of the two conveying belts 201.

[0047] Subsequently, when the second upper conveying belt 320 and the second lower conveying belt 330 jointly clamp the steel pipe 500, only the second upper conveying belt 320 or the second lower conveying belt 330 needs to be powered, so as to realize the effective conveying of the steel pipe 500. That is, one of the second upper conveying belt 320 and the second lower conveying belt 330 is driven by the second power source, and the other one can be set to a free state, so as to simplify the structure and save the manufacturing cost. Of course, the second upper conveying belt 320 and the second lower conveying belt 330 can also be driven by respective power sources, which is not limited to the above embodiment.

[0048] However, no matter what structure the second conveying device 300 adopts, the conveying speed thereof needs to be set to be adjustable, that is, the second power source needs to be selected as an adjusting motor, and the conveying speed of the second conveying device 300 can be adjusted to be synchronous with the conveying speed of the first conveying device 200, or faster than the conveying speed of the first conveying device 200. Moreover, the second power source of the second conveying device 300 is built-in with a damping sensor (not shown in the drawings), which feeds back a signal to a controller (not shown in the drawings) as soon as the damping sensor senses that the second power source appears to be damped when conveying the steel pipe 500, and the power of the second power source is adjusted by the controller.

[0049] In some other embodiments, the second lifting mechanism can also be connected to the second lower conveying belt 330, and the position of the second upper conveying belt 320 remains unchanged. However, the bottom surface of the steel pipe 500 is generally used as the positioning reference, and if the second lifting mechanism is connected to the second lower conveying belt 330, the positioning reference of the steel pipe 500 will be changed, so this embodiment is only an optional embodiment, but not a preferred embodiment.

[0050] As shown in Figure 1 , Figure 4 and Figure 5 , the rolling-off frame 400 is arranged between the first conveying device 200 and the second conveying device 300, and the rolling-off frame 400 comprises a support 410, a rolling-off channel 420 and a limiting plate 430, the rolling-off channel 420 and the limiting plate 430 are both mounted on the support 410, the rolling-off channel 420 is arranged from high to low, and a plurality of sleeve heads 600 are stored in the rolling-off channel 420, and the limiting plate 430 is located at the end of the rolling-off channel 420, so that the sleeve heads 600 on the rolling-off channel 420 can sequentially roll onto the limiting plate 430 under the action of gravity, without manual intervention.

[0051] In view of the shape of the sleeve head 600, the rolling-off channel 420 is provided with a groove 421 for supporting the bearing platform 610, the depth of the groove 421 is equal to half of the difference between the inner diameter of the bearing platform 610 and the boss 620, and the width of the groove 421 is slightly greater than the width of the bearing platform 610, so that when the bearing platform 610 is supported on the inner bottom surface of the groove 421, the boss 620 can also be supported on the outer top surface of the groove 421, so that the sleeve head 600 can more stably roll from the rolling-off channel 420 to the limiting plate 430. Since the bearing platform 610 is a cylinder, the limiting plate 430 is preferably arranged in a circular arc shape, and the radius thereof is consistent with the radius of the bearing platform 610. When the sleeve head 600 rolls to the limiting plate 430, the position of the sleeve head 600 is limited by the limiting plate 430 under the limiting action of the limiting plate 430. For the convenience of description, the area defined by the limiting plate 430 is defined as a limiting space 431, and the limiting space 431 is respectively connected to the first conveying path of the first conveying device 200 and the second conveying path of the second conveying device 300.

[0052] When the steel pipe 500 is conveyed by the second conveying device 300 to the vicinity of the rolling frame 400, the inner cavity of the steel pipe 500 can be aligned with the boss 620 of the sleeve head 600 due to the abutment of the limiting space 431 with the first conveying path of the first conveying device 200 and the second conveying path of the second conveying device 300. After that, the steel pipe 500 can be abutted with the sleeve head 600 under the conveying of the second conveying device 300, and the sleeve head 600 can be moved to the direction of the first conveying device 200. Since the steel pipe 500 occupies the limiting space 431 at this time, other sleeve heads 600 cannot roll down to the limiting plate 430, but once the steel pipe 500 passes the limiting space 431, the sleeve head 600 at the bottom will roll down to the limiting plate 430 under the action of gravity, and other sleeve heads 600 will maintain the abutment relationship in sequence.

[0053] Further, the limiting plate 430 is a magnetic material, the abutment 610 is a magnetic material, and the boss 620 is a non-magnetic material. In the embodiment, the limiting plate 430 can be selected as a magnet plate, the abutment 610 can be selected as an iron block, and the boss 620 can be selected as a hard plastic block. When the sleeve head 600 rolls down to the limiting plate 430, the limiting plate 430 generates a magnetic attraction to the abutment 610 to magnetically constrain the abutment 610 in the limiting space 431, so as to avoid the position deflection of the sleeve head 600 during the rolling process. Although the limiting plate 430 is a magnetic material and the abutment 610 is a magnetic material, the sleeve head 600 will not roll down to the position, because the limiting plate 430 has the same radius as the abutment 610, so when the sleeve head 600 rolls down, the upstream side is affected by the gravity of other sleeve heads 600, and the downstream side is affected by the magnetic force of the limiting plate 430, so the sleeve head 600 will definitely roll down to the surface abutment with the limiting plate 430, thereby limiting the final position of the sleeve head 600 on the rolling frame 400.

[0054] It needs to be further explained that in order to avoid interference, although the groove 421 is communicated with the limiting space 431, the groove 421 does not extend to the limiting space 431 to reserve a space for the steel pipe 500 to pass through, so as to avoid the interference between the steel pipe 500 and the groove 421 when the steel pipe 500 passes through the limiting space 431.

[0055] With the above structure, during production, the upstream steel pipe 500 moves in the direction of the annular extrusion head 110 under the conveying of the second conveying device 300 and the first conveying device 200, when the upstream steel pipe 500 passes through the rolling frame 400, a position vacancy appears in the limiting space 431, and the plurality of sleeve heads 600 on the rolling channel 420 move to the limiting space 431 under the action of gravity until one sleeve head 600 rolls into the limiting space 431. The downstream steel pipe 500 is conveyed by the second conveying device 300, and since the conveying speed of the second conveying device 300 is adjustable, the conveying speed of the downstream steel pipe 500 is set by the controller to be greater than the conveying speed of the upstream steel pipe 500, and during the conveying of the downstream steel pipe 500, the downstream steel pipe 500 first connects with the sleeve head 600 in the limiting space 431, then the downstream steel pipe 500 drives the sleeve head 600 to chase the upstream steel pipe 500, and finally the sleeve head 600 of the downstream steel pipe 500 is connected to the upstream steel pipe 500 under the conveying of the second conveying device 300, so as to realize automatic assembly of two adjacent steel pipes 500.

[0056] Once the two steel pipes 500 are assembled, the conveying of the second conveying device 300 will be hindered by the first conveying device 200, the damping sensor collects the signal and feeds back to the controller, then the conveying speed of the second conveying device 300 is set by the controller to be equal to the conveying speed of the second conveying device 300, and the two steel pipes 500 after assembly are conveyed to the annular extrusion head 110 for rubber coating, until the downstream steel pipe 500 passes through the second conveying device 300. When the downstream steel pipe 500 passes through the second conveying device 300, the second conveying device 300 is in an idle state at this time, the damping sensor collects the signal and feeds back to the controller, and the controller adjusts the conveying speed of the second conveying device 300 to be greater than the conveying speed of the first conveying device 200, waiting for the feeding of the next steel pipe 500. Compared with the prior art, the automatic assembly of two steel pipes 500 is realized without manual operation, at least one worker's station is released, the labor cost is effectively reduced, and a technical basis for automatic production is provided.

[0057] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A rubberized steel tube loading assembly characterized by, The utility model relates to a steel pipe extruding device, comprising: an extruder (100) provided with a ring-shaped extruding head (110) having a conveying channel for a steel pipe (500) to pass through, the ring-shaped extruding head (110) extruding plastic towards the steel pipe (500) passing through the conveying channel; a first conveying device (200) provided upstream of the extruder (100), the first conveying device (200) having a first conveying path abutting the conveying channel; a second conveying device (300) provided upstream of the first conveying device (200), the second conveying device (300) having a second conveying path abutting the conveying channel, the conveying speed of the second conveying device (300) being adjustable; a rolling frame (400) provided between the first conveying device (200) and the second conveying device (300), the rolling frame (400) being provided with a rolling channel (420) for storing a plurality of sleeves (600), the end of the rolling channel (420) being provided with a limiting plate (430), the limiting plate (430) forming a limiting space (431) for limiting the position of the sleeve (600), the limiting space (431) abutting the first conveying path and the second conveying path respectively.

2. The steel tube encapsulated loading assembly of claim 1, wherein: The sleeve (600) comprises a bearing platform (610) and a boss (620), the boss (620) penetrating through the bearing platform (610) and extending to both sides of the bearing platform (610), the outer diameter of the bearing platform (610) being greater than the inner diameter of the steel pipe (500), and the outer diameter of the boss (620) being not greater than the inner diameter of the steel pipe (500).

3. The steel tube encapsulated loading assembly of claim 2, wherein: The rolling channel (420) is provided with a groove (421) for supporting the bearing platform (610), the groove (421) not extending to the limiting space (431).

4. The steel tube encapsulated loading assembly of claim 2 or 3, wherein: The limiting plate (430) is a magnetic material, the bearing platform (610) is a magnetic material, and the boss (620) is a non-magnetic material.

5. The steel tube encapsulated loading assembly of claim 1, wherein: The first conveying device (200) is provided with a first upper conveying belt (220) and a first lower conveying belt (230), the first upper conveying belt (220) and the first lower conveying belt (230) forming the first conveying path.

6. The steel tube encapsulated loading assembly of claim 5, wherein: The first upper conveying belt (220) is connected with a first lifting mechanism, the first lifting mechanism being used for adjusting the up-down distance between the first upper conveying belt (220) and the first lower conveying belt (230).

7. The steel tube encapsulated loading assembly of claim 6, wherein: The first upper conveying belt (220) or the first lower conveying belt (230) is driven by a first power source.

8. The steel tube encapsulated loading assembly of claim 1, wherein: The second conveying device (300) is provided with a second upper conveying belt (320) and a second lower conveying belt (330), the second upper conveying belt (320) and the second lower conveying belt (330) forming the second conveying path.

9. The steel tube encapsulated loading assembly of claim 8, wherein: The second upper conveying belt (320) is connected with a second lifting mechanism, the second lifting mechanism being used for adjusting the up-down distance between the second upper conveying belt (320) and the second lower conveying belt (330).

10. The steel tube encapsulated loading assembly of claim 9, wherein: The second upper conveyor belt (320) or the second lower conveyor belt (330) is driven by a second power source.

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