Bimetallic composite pipe processing equipment and method for processing bimetallic composite pipes

Abstract

The present application discloses a bimetal composite pipe processing device and a method for processing a bimetal composite pipe. The bimetal composite pipe processing device includes: a support table; a sliding assembly disposed on the support table, the sliding assembly including a first slide rail and a second slide rail; a drilling device disposed on the sliding assembly, the drilling device being used for drilling a pre-assembled blank; a riveting device disposed on the sliding assembly, the riveting device being used for riveting an inner base pipe and an outer covering pipe of the pre-assembled blank; a clamping and feeding device, which is used for clamping the pre-assembled blank and driving the pre-assembled blank to move and rotate; a pipe rolling unit disposed on the support table, the pipe rolling unit being used for rolling the pre-assembled blank to form a bimetal composite pipe. When the above device is applied, instead of welding the inner base pipe and the outer covering pipe, the inner base pipe and the outer covering pipe are riveted and fixed to prevent the inner base pipe and the outer covering pipe from being misaligned with each other during the rolling and composite process.

Description

Technical Field

[0001] The present application relates to the technical field of metal pipe processing, and particularly relates to a bimetal composite pipe processing device and a method for processing bimetal composite pipes. Background Art

[0002] A bimetal composite pipe is formed by combining two different metals through an inner and outer interface. It combines the excellent properties of each component metal, can reduce the use of precious metal materials, save costs, and has good technicality and economy. Due to its excellent mechanical properties, bimetal composite pipes have a wide range of demands in high-tech industries such as petrochemical, offshore engineering, aerospace, and national defense.

[0003] Currently, common preparation processes for bimetal composite pipes include centrifugal casting, explosion welding, and hydraulic expansion forming. However, for centrifugally cast bimetal composite pipes, the inner wall diameter accuracy is low, the casting forming quality is poor, and the machining allowance is large; for explosion-welded bimetal composite pipes, the interface bonding quality is poor and the environmental pollution is serious; for hydraulically expanded bimetal composite pipes, the interface bonding is mechanical bonding, which severely limits the performance of bimetal composite pipes.

[0004] The rolling composite method has become one of the most promising preparation technologies for bimetal composite pipes due to its stable process and high production efficiency. Among them, the three-roll skew rolling composite process can achieve the continuous forming of bimetal composite pipes and prepare high-performance bimetal composite pipes. However, this process has high requirements for the pre-assembled blank. Usually, welding is required for the pre-assembled blank to limit the mutual misalignment of the inner base pipe and the outer cladding pipe during the rolling composite process, and to ensure the coordinated deformation of the pre-assembled blank during the rolling composite process to achieve stable interface bonding. This severely limits the preparation of composite pipes of difficult-to-weld or non-weldable metals such as titanium / aluminum, steel / copper, magnesium / aluminum, and copper / aluminum, and greatly reduces the production efficiency. Summary of the Invention

[0005] The purpose of the present application is to provide a bimetal composite pipe processing device and a method for processing bimetal composite pipes to solve the problem of mutual misalignment of non-weldable inner base pipes and outer cladding pipes during the rolling composite process, and the problem of low production efficiency caused by the need for manual transfer of the pre-assembled blank to the pipe rolling mill for the connection of front and back processes.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] A bimetal composite pipe processing device includes:

[0008] A support table;

[0009] A sliding component disposed on the support table, the sliding component includes a first slide rail and a second slide rail, and the extending direction of the first slide rail intersects with the extending direction of the second slide rail;

[0010] A drilling device disposed on the sliding assembly, the drilling device being capable of sliding along the extending direction of the first slide rail and the extending direction of the second slide rail, and the drilling device being used for drilling a pre-assembled blank.

[0011] A riveting device disposed on the sliding assembly, the riveting device being capable of sliding along the extending direction of the first slide rail and the extending direction of the second slide rail, and the riveting device being used for riveting an inner base pipe and an outer covering pipe of a pre-assembled blank.

[0012] A clamping and feeding device for clamping a pre-assembled blank and driving the pre-assembled blank to move and rotate.

[0013] A pipe rolling unit disposed on the support table, the pipe rolling unit being used for rolling a pre-assembled blank to form a bimetallic composite pipe.

[0014] In one implementation, the number of the first slide rails is two, and both ends of the second slide rail are respectively disposed on the two first slide rails.

[0015] Both the drilling device and the riveting device are disposed on the second slide rail.

[0016] In one implementation, the first slide rail includes a first lead screw guide rail, and the sliding assembly further includes a first rotation driving member capable of driving the first lead screw guide rail to rotate.

[0017] The second slide rail includes a second lead screw guide rail, and the sliding assembly further includes a second rotation driving member capable of driving the second lead screw guide rail to rotate.

[0018] In one implementation, both the drilling device and the riveting device are disposed on the second lead screw guide rail through a connecting seat. The connecting seat includes an internal thread hole capable of cooperating with the second lead screw guide rail. The connecting seat includes a plurality of split bodies circumferentially distributed along its internal thread hole. The plurality of split bodies can move away from the second lead screw guide rail to disengage the internal thread hole of the connecting seat from the second lead screw guide rail, and the plurality of split bodies can approach the second lead screw guide rail to enable the internal thread hole of the connecting seat to be in threaded cooperation with the second lead screw guide rail.

[0019] In one implementation, a first limiting member and a first position sensor are disposed near the first end of the second lead screw guide rail, and the first limiting member is located on one side of the first position sensor close to the first end of the second lead screw guide rail; a second limiting member and a second position sensor are disposed near the second end of the second lead screw guide rail, and the second limiting member is located on one side of the second position sensor close to the second end of the second lead screw guide rail.

[0020] After the riveting device moves along the second lead screw guide rail to a position between the first position sensor and the first limiting member, the internal threaded hole of the connecting seat of the riveting device disengages from the second lead screw guide rail; after the drilling device moves along the second lead screw guide rail to a position between the second position sensor and the second limiting member, the internal threaded hole of the connecting seat of the drilling device disengages from the second lead screw guide rail.

[0021] In one implementation, the connecting seat further includes a split driving member capable of driving the split body to approach or move away from the second lead screw guide rail;

[0022] The split driving member includes a telescopic cylinder and / or a linear motor.

[0023] In one implementation, the drilling device includes a third lead screw guide rail, a third rotation driving member capable of driving the third lead screw guide rail to rotate, and a drilling machine disposed on the third lead screw guide rail, and the extending direction of the third lead screw guide rail is along the vertical direction; and / or, the riveting device includes a fourth lead screw guide rail, a fourth rotation driving member capable of driving the fourth lead screw guide rail to rotate, and a riveting gun disposed on the fourth lead screw guide rail, and the extending direction of the fourth lead screw guide rail is along the vertical direction.

[0024] In one implementation, the drilling device includes a third lead screw guide rail, a third rotation driving member capable of driving the third lead screw guide rail to rotate, and a drilling machine disposed on the third lead screw guide rail, and the drilling device further includes a third limiting member disposed near the third lead screw guide rail; and / or,

[0025] The riveting device includes a fourth lead screw guide rail, a fourth rotation driving member capable of driving the fourth lead screw guide rail to rotate, and a riveting gun disposed on the fourth lead screw guide rail; the riveting device further includes a fourth limiting member disposed near the fourth lead screw guide rail.

[0026] In one implementation, the clamping and feeding device includes a base, a mandrel trolley disposed on the base, and a third slide rail disposed on the base, and the clamping and feeding device further includes a clamp disposed on the third slide rail, and the clamp can move along the extending direction of the third slide rail to approach or move away from the riveting device and the drilling device, and the clamp can also drive the pre-assembled blank to rotate.

[0027] When applying the bimetal composite pipe processing equipment provided by the present application, the pre-assembled blank is first set in the clamping and feeding device. The clamping and feeding device clamps the pre-assembled blank, and then the clamping and feeding device drives the pre-assembled blank to move near the drilling device. The drilling device moves along the extension direction of the first slide rail and then along the extension direction of the second slide rail, and finally the drilling device moves to a suitable position to drill the end of the pre-assembled blank. It can be understood that in order to ensure that the inner base pipe and the outer covering pipe will not be misaligned during the rolling and composite process, multiple holes can be processed at the end of the pre-assembled blank. Specifically, after drilling one hole, the clamping and feeding device drives the pre-assembled blank to rotate a preset angle, and then the drilling device drills the end of the pre-assembled blank again. After drilling, the riveting device moves along the extension direction of the first slide rail and then along the extension direction of the second slide rail, and finally the riveting device moves to a suitable position to rivet multiple drilled holes of the pre-assembled blank in sequence. After riveting, the clamping and feeding device drives the pre-assembled blank to move to the pipe rolling mill, and at the same time the clamping and feeding device moves the mandrel to the pipe rolling mill. After the pipe rolling mill bites the pre-assembled blank, it will give the pre-assembled blank a forward force along the axis. After being subjected to the force, the pre-assembled blank will be disengaged from the clamping and feeding device, so that the pre-assembled blank can pass through the pipe rolling mill smoothly to complete the rolling and composite, forming a bimetal composite pipe.

[0028] As can be seen from the above, during the process of producing bimetal composite pipes by applying the bimetal composite pipe processing equipment provided by the present application, there is no need to weld the inner base pipe and the outer covering pipe. Instead, the inner base pipe and the outer covering pipe are riveted and fixed to prevent the inner base pipe and the outer covering pipe from being misaligned with each other during the rolling and composite process. Compared with the prior art in which the inner base pipe and the outer covering pipe are relatively fixed by welding, the process flow is simplified, the operation is convenient, and it can be applied to the pre-installation and fixation of inner base pipes and outer covering pipes that are difficult to weld or cannot be welded, preventing them from being misaligned with each other during the rolling and composite process.

[0029] In the present application, the drilling device, the riveting device and the pipe rolling mill are arranged in sequence. The drilling device and the riveting device are located on the inlet side of the pipe rolling mill, so as to drill, rivet and roll the pre-assembled blank in sequence. Compared with the prior art in which the pre-assembled blank is first manually welded separately and then transferred to the rolling mill for rolling, after the pre-assembled blank is riveted online by the drilling device and the riveting device in the present application, it is directly pushed into the pipe rolling mill online through the clamping and feeding device. After being received by the pipe rolling mill, under the driving of the rolling force of the pipe rolling mill, it automatically gradually disengages from the clamping and feeding device, realizing the automatic connection of the front and back processes, without manual transfer operation, forming a pipeline processing method, and improving the processing efficiency of bimetal composite pipes.

[0030] A method for processing bimetal composite pipes, applying the bimetal composite pipe processing equipment as described in any one of the above, including the steps:

[0031] The inner base pipe and the outer covering pipe are sleeved to form a pre-sleeved blank;

[0032] The clamping and feeding device is used to clamp the pre-sleeved blank and drive the pre-sleeved blank to move near the drilling device and the riveting device;

[0033] The drilling device is used to open at least one drilling hole at the end of the pre-sleeved blank;

[0034] The riveting device is used to perform riveting at the drilling hole on the pre-sleeved blank;

[0035] The clamping and feeding device is used to transfer the pre-sleeved blank and the mandrel to a tube rolling mill for rolling, so that the pre-sleeved blank forms a bimetal composite pipe.

[0036] In one implementation, after the inner base pipe and the outer covering pipe are sleeved to form a pre-sleeved blank and before the clamping and feeding device clamps the pre-sleeved blank, the method further includes the steps of:

[0037] The two ends of the pre-sleeved blank are sealed with a high-temperature resistant and flame-retardant adhesive and placed in a vacuum heating furnace for heat preservation within a preset temperature range.

[0038] In one implementation, before the inner base pipe and the outer covering pipe are sleeved to form a pre-sleeved blank, the method further includes the steps of: grinding the outer surface of the inner base pipe and the inner surface of the outer covering pipe;

[0039] And / or, after the clamping and feeding device transfers the pre-sleeved blank and the mandrel to a tube rolling mill for rolling to form a bimetal composite pipe, the method further includes the step of: cutting the bimetal composite pipe.

[0040] Compared with the prior art, the beneficial effects of the method for processing a bimetal composite pipe provided by this application are the same as those of the above-mentioned bimetal composite pipe processing equipment, and will not be elaborated here. Description of the Drawings

[0041] The drawings described herein are used to provide a further understanding of this application, and constitute a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0042] Figure 1 is an overall schematic diagram of the bimetal composite pipe processing equipment provided by the embodiment of this application;

[0043] Figure 2 is a schematic diagram of the riveting device and the drilling device on the sliding assembly provided by the embodiment of this application;

[0044] Figure 3Schematic diagram of the first slide rail provided by the embodiment of the present application;

[0045] Figure 4 Schematic diagram of the second slide rail provided by the embodiment of the present application;

[0046] Figure 5 Schematic diagram of the drilling device provided by the embodiment of the present application;

[0047] Figure 6 Schematic diagram of the riveting device provided by the embodiment of the present application;

[0048] Figure 7 Schematic diagram of the clamping and feeding device provided by the embodiment of the present application;

[0049] Figure 8 Cross-sectional view of the riveting of the inner base tube and the outer covering tube provided by the embodiment of the present application.

[0050] Reference numerals:

[0051] 1 - support table, 2 - riveting device, 3 - drilling device, 4 - base, 5 - mandrel trolley, 6 - mandrel, 7 - clamp, 8 - pre - assembled blank, 8a - inner base tube, 8b - outer covering tube, 9 - second slide rail, 9a - second lead screw guide rail, 10 - tube rolling mill, 11 - first slide rail, 11a - first lead screw guide rail, 11b - first slideway, 12 - first rotation driving member, 13 - blocking member, 14 - second rotation driving member, 15a - first limiting member, 15b - first position sensor, 15c - second limiting member, 15d - second position sensor, 16 - third lead screw guide rail, 17 - drilling machine, 18 - third rotation driving member, 19 - third limiting member, 20 - fourth lead screw guide rail, 21 - riveting gun, 22 - fourth rotation driving member, 23 - fourth limiting member, 24 - third slide rail, 25 - rivet. Detailed implementation manners

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0055] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0056] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0057] Please refer to Figure 1 , the bimetal composite pipe processing equipment provided by the embodiment of the present application includes a support table 1, a sliding assembly, a drilling device 3, a riveting device 2, a clamping and feeding device, and a pipe rolling unit 10.

[0058] Among them, the sliding assembly is arranged on the support table 1. The sliding assembly includes a first slide rail 11 and a second slide rail 9, and the extending directions of the first slide rail 11 and the second slide rail 9 intersect. Preferably, the extending directions of the first slide rail 11 and the second slide rail 9 can be perpendicular to each other, which is more conducive to the rapid movement of the drilling device 3 and the riveting device 2 to the target position. The extending directions of the first slide rail 11 and the second slide rail 9 can be along the horizontal direction.

[0059] The drilling device 3 is arranged on the sliding assembly. The drilling device 3 is used for drilling the pre-assembled blank 8, that is, the drilling device 3 can drill the end of the pre-assembled blank 8 to form at least a drill hole penetrating the outer covering tube 8b at the end of the pre-assembled blank 8. Preferably, the depth of the drill hole can be greater than the thickness of the outer covering tube 8b and less than the sum of the thickness of the outer covering tube 8b and the thickness of the inner base tube 8a, that is, the drill hole penetrates the outer covering tube 8b and does not penetrate the inner base tube 8a. The drilling device 3 can slide along the extending direction of the first slide rail 11 and the extending direction of the second slide rail 9. Specifically, the drilling device 3 can be moved along the first slide rail 11 according to the position of the drilling device 3, and then moved along the second slide rail 9, and finally the drilling device 3 is moved to the target position, and the drilling device 3 drills the pre-assembled blank 8 at the target position.

[0060] The riveting device 2 is arranged on the sliding assembly. The riveting device 2 is used for riveting the inner base tube 8a and the outer covering tube 8b of the pre-assembled blank 8, that is, the riveting device 2 is used for riveting and fixing the inner base tube 8a and the outer covering tube 8b together at the drilling position. The riveting device 2 can slide along the extending direction of the first slide rail 11 and the extending direction of the second slide rail 9. Specifically, the riveting device 2 can be moved along the first slide rail 11 according to the position of the riveting device 2, and then moved along the second slide rail 9, and finally the riveting device 2 is moved to a suitable position, and the riveting device 2 rivets the drilled part of the pre-assembled blank 8. After the inner base tube 8a and the outer covering tube 8b are riveted as Figure 8 shown, and the rivets 25 used for riveting can be grooved solid rivets.

[0061] The clamping and feeding device is used for clamping the pre-assembled blank 8 and driving the pre-assembled blank 8 to move. Specifically, the clamping and feeding device can clamp the pre-assembled blank 8, and the clamping and feeding device can also drive the pre-assembled blank 8 to move, approaching or departing from the riveting device 2 and the drilling device 3. Specifically, the clamping and feeding device can drive the pre-assembled blank 8 to move horizontally. The clamping and feeding device can also drive the pre-assembled blank 8 to rotate, that is, the clamping and feeding device can also drive the pre-assembled blank 8 to rotate around its own axis to drill and rivet the pre-assembled blank 8 at different circumferential positions.

[0062] The tube rolling mill 10 is arranged on the support table 1. The tube rolling mill 10 is used for rolling the pre-assembled blank 8 to form a bimetal composite tube. The tube rolling mill 10 can be a three-roll skew rolling mill.

[0063] When applying the bimetal composite pipe processing equipment provided by the present application, the pre-assembled blank 8 is first set in the clamping and feeding device. The clamping and feeding device clamps the pre-assembled blank 8, and then the clamping and feeding device drives the pre-assembled blank 8 to move near the drilling device 3. The drilling device 3 moves along the extension direction of the first slide rail 11, and then moves along the extension direction of the second slide rail 9. Finally, the drilling device 3 is moved to a suitable position, and the end of the pre-assembled blank 8 is drilled by the drilling device 3. It can be understood that in order to ensure that the inner base pipe 8a and the outer covering pipe 8b will not be misaligned during the rolling and composite process, multiple holes can be processed at the end of the pre-assembled blank 8. Specifically, after one hole is processed, the clamping and feeding device drives the pre-assembled blank 8 to rotate a preset angle, and then the drilling device 3 drills the end of the pre-assembled blank 8 again. After drilling is completed, the riveting device 2 moves along the extension direction of the first slide rail 11, and then moves along the extension direction of the second slide rail 9. Finally, the riveting device 2 is moved to a suitable position, and the riveting device 2 sequentially rivets at multiple drilled holes of the pre-assembled blank 8. After riveting is completed, the clamping and feeding device drives the pre-assembled blank 8 to move to the pipe rolling mill 10. At the same time, the clamping and feeding device moves the mandrel 6 to the pipe rolling mill 10. After the pipe rolling mill 10 bites the pre-assembled blank 8, a force along the axis forward will be given to the pre-assembled blank 8. After being subjected to the force, the pre-assembled blank 8 will be disengaged from the clamping and feeding device, enabling the pre-assembled blank 8 to pass through the pipe rolling mill 10 smoothly to complete rolling and composite, forming a bimetal composite pipe. During the above process, the pre-assembled blank 8 can always be sleeved on the mandrel 6, that is, during drilling, riveting and rolling, the pre-assembled blank 8 moves along the mandrel 6.

[0064] As can be seen from the above, during the process of producing a bimetal composite pipe by applying the bimetal composite pipe processing equipment provided by the present application, it is not necessary to weld the inner base pipe 8a and the outer covering pipe 8b, but the inner base pipe 8a and the outer covering pipe 8b are riveted and fixed to prevent the inner base pipe 8a and the outer covering pipe 8b from being misaligned with each other during the rolling and composite process. Compared with the prior art in which the inner base pipe 8a and the outer covering pipe 8b are relatively fixed by welding, the process flow is simplified, the operation is convenient, and it can be applied to the pre-assembly and fixing of the inner base pipe 8a and the outer covering pipe 8b that are difficult to weld or cannot be welded, preventing them from being misaligned with each other during the rolling and composite process.

[0065] In this application, the drilling device 3, the riveting device 2, and the tube rolling mill 10 are arranged in sequence. The drilling device 3 and the riveting device 2 are located on the inlet side of the tube rolling mill 10, so as to drill, rivet, and roll the pre-assembled blank 8 in sequence. Compared with the prior art in which the pre-assembled blank 8 is first manually welded separately and then transferred to the rolling mill 10 for rolling, after the riveting of the pre-assembled blank 8 is completed online by the drilling device 3 and the riveting device 2 in this application, it is directly pushed into the tube rolling mill 10 online through the clamping and feeding device. After being received by the tube rolling mill 10, under the drive of the rolling force of the tube rolling mill 10, it automatically gradually disengages from the clamping and feeding device, realizing the automatic connection of the front and back processes, without manual transfer operation, forming a pipeline-type processing, and improving the processing efficiency of the bimetal composite tube.

[0066] As Figure 2 shown, in a specific embodiment, the number of the first slide rails 11 can be two, and the two first slide rails 11 are arranged in parallel. Both ends of the second slide rail 9 are respectively arranged on the two first slide rails 11. The drilling device 3 and the riveting device 2 are both arranged on the second slide rail 9. In this way, the second slide rail 9 and the drilling device 3 and the riveting device 2 arranged on the second slide rail 9 can move together along the extension direction of the first slide rail 11. In addition, the drilling device 3 and the riveting device 2 can move along the extension direction of the second slide rail 9, so that the drilling device 3 and the riveting device 2 can slide both along the extension direction of the first slide rail 11 and along the extension direction of the second slide rail 9. In this way, the positions of the drilling device 3 and the riveting device 2 can be adjusted in two directions, which is beneficial to quickly adjusting the drilling device 3 and the riveting device 2 to appropriate positions.

[0067] Of course, only one first slide rail 11 can also be set, the second slide rail 9 is arranged on the first slide rail 11, and the drilling device 3 and the riveting device 2 are both arranged on the second slide rail 9, and it can also realize that the second slide rail 9 and the drilling device 3 and the riveting device 2 arranged on the second slide rail 9 can move together along the extension direction of the first slide rail 11.

[0068] As Figure 3As shown, the first slide rail 11 may include a first lead screw guide rail 11a, and the sliding assembly further includes a first rotation driving member 12 which is capable of driving the first lead screw guide rail 11a to rotate. Specifically, the base of the second slide rail 9 may be in threaded engagement with the first lead screw guide rail 11a. While the first rotation driving member 12 drives the first lead screw guide rail 11a to rotate, the second slide rail 9 moves along the first lead screw guide rail 11a. With such a setting, the structure is simple and convenient to operate. It can be understood that when the number of the first slide rails 11 is two, one of the first slide rails 11 can be the first lead screw guide rail 11a and the other first slide rail 11 can be the first slideway 11b, and the base of the second slide rail 9 is in sliding engagement with the first slideway 11b. The first rotation driving member 12 can specifically be components such as a motor or a rotary cylinder.

[0069] In order to prevent the second slide rail 9 from moving too far along the first slide rail 11 and damaging other devices when moving, at least one blocking member 13 may be provided on the first lead screw guide rail 11a. The blocking member 13 can block the second slide rail 9 from continuing to move along the first slide rail 11. The number of the blocking members 13 can be one, two, three, etc. Preferably, two blocking members 13 may be provided on the first lead screw guide rail 11a, and the second slide rail 9 slides between the two blocking members 13.

[0070] In the above embodiment, when the number of the first slide rails 11 is two, both of the two first slide rails 11 can also be slideways, and the telescopic cylinder can be used to drive the second slide rail 9 to slide along the first slide rails 11.

[0071] As Figure 4 shown, the second slide rail 9 includes a second lead screw guide rail 9a, and the sliding assembly further includes a second rotation driving member 14 which is capable of driving the second lead screw guide rail 9a to rotate. Specifically, the connecting seats of the drilling device 3 and the riveting device 2 can be in threaded engagement with the second lead screw guide rail 9a. While the second rotation driving member 14 drives the second lead screw guide rail 9a to rotate, the drilling device 3 and the riveting device 2 move along the second lead screw guide rail 9a. With such a setting, the structure is simple and convenient to operate. Of course, the second slide rail 9 can also include a slideway, and the connecting seats of the drilling device 3 and the riveting device 2 just slide along the slideway. The second rotation driving member 14 can specifically be components such as a motor or a rotary cylinder.

[0072] In the above technical solution, both the drilling device 3 and the riveting device 2 are arranged on the second lead screw guide 9a through a connecting seat. The connecting seat includes an internal threaded hole that can cooperate with the second lead screw guide 9a. The drilling device 3 is fixedly connected to one connecting seat, and the riveting device 2 is fixedly connected to the other connecting seat. Specifically, the drilling device 3 can be fixed to one connecting seat by bolts, welding, etc.; the riveting device 2 can be fixed to the other connecting seat by bolts, welding, etc. After the internal threaded hole of the connecting seat is in threaded cooperation with the second lead screw guide 9a, the second lead screw guide 9a rotates, and the connecting seat moves along the length direction of the second lead screw guide 9a. Furthermore, the connecting seat drives the drilling device 3 or the riveting device 2 fixedly connected to the connecting seat to move.

[0073] The connecting seat can include a plurality of segments distributed circumferentially along its internal threaded hole, that is, the plurality of segments can be arranged in sequence circumferentially and assembled together to form the connecting seat. The number of segments can be two, three, four, etc. The plurality of segments can move away from the second lead screw guide 9a to disengage the internal threaded hole of the connecting seat from the second lead screw guide 9a, that is, the plurality of segments move in a direction away from the second lead screw guide 9a to create a gap between the internal thread of the connecting seat and the second lead screw guide 9a, achieving the disengagement of the internal threaded hole of the connecting seat from the second lead screw guide 9a. Furthermore, when the second lead screw guide 9a rotates, the connecting seat no longer moves along the length direction of the second lead screw guide 9a. The plurality of segments can move closer to the second lead screw guide 9a to thread the internal threaded hole of the connecting seat with the second lead screw guide 9a, that is, the plurality of segments can also move in a direction closer to the second lead screw guide 9a to thread the internal threaded hole of the connecting seat with the second lead screw guide 9a. Furthermore, when the second lead screw guide 9a rotates, the connecting seat moves along the length direction of the second lead screw guide 9a, and the connecting seat drives the drilling device 3 or the riveting device 2 fixed to it to move.

[0074] Furthermore, a first limiting member 15a and a first position sensor 15b are arranged near the first end of the second lead screw guide 9a, and the first limiting member 15a is located on one side of the first position sensor 15b closer to the first end of the second lead screw guide 9a. Specifically, the first end of the second lead screw guide 9a is close to the pipe rolling unit 10. The first limiting member 15a is located on one side of the second position sensor 15d closer to the pipe rolling unit 10, and both the first limiting member 15a and the first position sensor 15b are arranged near the first end of the second lead screw guide 9a. A second limiting member 15c and a second position sensor 15d are arranged near the second end of the second lead screw guide 9a. The second limiting member 15c is located on one side of the second position sensor 15d closer to the second end of the second lead screw guide 9a, that is, the second limiting member 15c is located on one side of the second position sensor 15d away from the pipe rolling unit 10. The first position sensor 15b is used to sense the passing of the riveting device 2 through this position, and the second position sensor 15d is used to sense the passing of the drilling device 3 through this position.

[0075] After the drilling device 3 moves along the second lead screw guide rail 9a to a position between the second position sensor 15d and the second limiting member 15c, the internal threaded hole of the connecting seat of the drilling device 3 is disengaged from the second lead screw guide rail 9a. Specifically, when drilling is required, after the clamping and feeding device drives the pre-assembled blank 8 to move to a suitable position, the second lead screw guide rail 9a rotates, and the drilling device 3 moves along the second lead screw guide rail 9a to near the pre-assembled blank 8. At this time, the multiple parts of the connecting seat of the riveting device 2 are disengaged from the second lead screw guide rail 9a. During the rotation of the second lead screw guide rail 9a, the riveting device 2 does not move, and the drilling device 3 drills on the pre-assembled blank 8. After drilling, the drilling device 3 moves along the second lead screw guide rail 9a in a direction away from the pipe rolling unit 10 until the drilling device 3 passes the second position sensor 15d. At this time, the multiple parts of the connecting seat of the drilling device 3 move in a direction away from the second lead screw guide rail 9a, so that there is a gap between the internal thread of the connecting seat of the drilling device 3 and the second lead screw guide rail 9a, realizing the disengagement of the internal threaded hole of the connecting seat of the drilling device 3 from the second lead screw guide rail 9a. Then, the multiple parts of the connecting seat of the riveting device 2 move in a direction close to the second lead screw guide rail 9a, and the internal threaded hole of the connecting seat of the riveting device 2 is in threaded engagement with the second lead screw guide rail 9a. The second lead screw guide rail 9a rotates, and after the riveting device 2 moves along the second lead screw guide rail 9a to a suitable position, the riveting device 2 performs riveting at the drilled hole of the pre-assembled blank 8. After riveting, the riveting device 2 moves along the second lead screw guide rail 9a in a direction close to the pipe rolling unit 10 until the riveting device 2 passes the first position sensor 15b. At this time, the multiple parts of the connecting seat of the riveting device 2 move in a direction away from the second lead screw guide rail 9a, so that there is a gap between the internal thread of the connecting seat of the riveting device 2 and the second lead screw guide rail 9a, realizing the disengagement of the internal threaded hole of the connecting seat of the riveting device 2 from the second lead screw guide rail 9a. By repeating this cycle, the drilling and riveting of multiple pre-assembled blanks 8 are realized, improving the working efficiency. Moreover, the movement of the riveting device 2 is not affected after the connecting seat of the drilling device 3 is disengaged from the second lead screw guide rail 9a, and the movement of the drilling device 3 is not affected after the connecting seat of the riveting device 2 is disengaged from the second lead screw guide rail 9a.

[0076] Among them, the first limiting member 15a can block the continuous movement of the riveting device 2 to prevent the riveting device 2 from moving too far along the second lead screw guide rail 9a and damaging other equipment. The second limiting member 15c can block the continuous movement of the drilling device 3 to prevent the drilling device 3 from moving too far along the second lead screw guide rail 9a and damaging other equipment.

[0077] In the above technical solution, the connecting seat further includes a split driving member capable of driving the split body to approach or move away from the second screw guide rail 9a. The split driving member includes a telescopic cylinder and / or a linear motor. Specifically, the telescopic cylinder and / or the linear motor drives the split body to move, and the split body can approach or move away from the second screw guide rail 9a. An elastic reset member can also be provided between the split body and the second screw guide rail 9a. After the telescopic cylinder and / or the linear motor extends, it drives the split body to approach the second screw guide rail 9a until the internal thread holes formed by multiple split bodies are in threaded cooperation with the second screw guide rail 9a. After the telescopic cylinder and / or the linear motor contracts, the elastic reset member drives the split body to move away from the second screw guide rail 9a and disengages from the second screw guide rail 9a. One split body can be correspondingly provided with one split driving member and one elastic reset member, or multiple split bodies can be correspondingly provided with one split driving member and one elastic reset member.

[0078] As Figure 5 shown, the drilling device 3 may include a third screw guide rail 16, a third rotation driving member 18, and a drilling machine 17. Among them, the third rotation driving member 18 can drive the third screw guide rail 16 to rotate. The drilling machine 17 is arranged on the third screw guide rail 16, and the base of the drilling machine 17 is in threaded cooperation with the third screw guide rail 16. The extending direction of the third screw guide rail 16 is along the vertical direction, that is, the drilling machine 17 can move along the extending direction of the third screw guide rail 16. Specifically, while the third rotation driving member 18 drives the third screw guide rail 16 to rotate, the drilling machine 17 moves up and down along the third screw guide rail 16, thereby realizing drilling. The third rotation driving member 18 can specifically be components such as a motor, a rotary cylinder, etc.

[0079] Furthermore, the drilling device 3 further includes a third limiting member 19 arranged near the third screw guide rail 16. The third limiting member 19 can block the drilling machine 17 from continuing to rise along the third screw guide rail 16, thereby limiting the displacement of the drilling machine 17 to prevent the drilling machine 17 from hitting other devices and being damaged.

[0080] In the above embodiment, the drilling machine 17 can be any type of drilling machine 17 available on the market. Of course, the telescopic cylinder can also be used to drive the drilling machine 17 to lift, which is not limited herein.

[0081] As Figure 6As shown in the figure, the riveting device 2 includes a fourth lead screw guide rail 20, a fourth rotational drive member 22, and a riveting gun 21. Among them, the fourth rotational drive member 22 can drive the fourth lead screw guide rail 20 to rotate. The riveting gun 21 is arranged on the fourth lead screw guide rail 20, and the base of the riveting gun 21 is in threaded cooperation with the fourth lead screw guide rail 20. The extending direction of the fourth lead screw guide rail 20 is along the vertical direction, that is, the riveting gun 21 can move along the extending direction of the fourth lead screw guide rail 20. Specifically, while the fourth rotational drive member 22 drives the fourth lead screw guide rail 20 to rotate, the riveting gun 21 moves up and down along the fourth lead screw guide rail 20, thereby realizing the riveting and fixing of the inner base tube 8a and the outer covering tube 8b. The fourth rotational drive member 22 can specifically be components such as a motor or a rotary cylinder.

[0082] Furthermore, the riveting device 2 further includes a fourth limiting member 23 arranged near the fourth lead screw guide rail 20. The fourth limiting member 23 can block the riveting gun 21 from continuing to rise along the fourth lead screw guide rail 20, thereby restricting the displacement of the riveting gun 21 to prevent the riveting gun 21 from hitting other equipment and being damaged.

[0083] In the above embodiment, the riveting gun 21 can be a pneumatic riveting gun or an electric riveting gun, and the riveting gun 21 can be any type of riveting gun available on the market. Of course, a telescopic cylinder can also be used to drive the riveting gun 21 to lift and lower, which is not limited herein.

[0084] As Figure 7 shown, the clamping and feeding device includes a base 4, a mandrel carriage 5, a clamp 7, and a third slide rail 24. Among them, the mandrel carriage 5 is arranged on the base 4, and the mandrel carriage 5 is slidably arranged on the base 4 to facilitate adjusting the position of the mandrel carriage 5. The mandrel carriage 5 can drive the mandrel 6 to reciprocate along the rolling axis, that is, the mandrel carriage 5 can drive the mandrel 6 to enter and exit the pipe rolling mill 10. The mandrel 6, the clamp 7, and the pipe rolling mill 10 should be coaxially arranged. The clamp 7 is arranged on the third slide rail 24, and the clamp 7 can move along the extending direction of the third slide rail 24 to approach or move away from the riveting device 2 and the drilling device 3. The clamp 7 can clamp the pre-assembled blank 8. While the clamp 7 moves along the third slide rail 24, it can drive the pre-assembled blank 8 to move near the drilling device 3 for drilling, and then move near the riveting device 2 for riveting. The clamp 7 can also drive the pre-assembled blank 8 to rotate. After one drilling is completed, the clamp 7 drives the pre-assembled blank 8 to rotate by a preset angle, and then the drilling device 3 drills the pre-assembled blank 8 again. In this way, multiple drill holes are processed at the end of the pre-assembled blank 8 in a cycle. The extending direction of the third slide rail 24 can be along the horizontal direction. Specifically, the third slide rail 24 and the second slide rail 9 can be arranged parallel to each other.

[0085] In addition, after riveting is completed, the mandrel carriage 5 drives the mandrel 6 into the pipe rolling mill 10, and at the same time, the clamp 7 drives the pre-assembled blank 8 into the pipe rolling mill 10; after rolling is completed, the mandrel carriage 5 and the clamp 7 can return to their original positions.

[0086] The third slide rail 24 can include a fifth lead screw guide rail and a fifth rotational drive member. The base of the clamp 7 is in threaded cooperation with the fifth lead screw guide rail. While the fifth rotational drive member drives the fifth lead screw guide rail to rotate, the clamp 7 moves along the fifth lead screw guide rail. Alternatively, the third slide rail 24 can also include a chute or a convex slideway, and a telescopic cylinder is used to drive the clamp 7 to move along the third slide rail 24. The fifth rotational drive member can specifically be components such as a motor or a rotary cylinder.

[0087] In the above embodiment, the clamp 7 can specifically be a three-jaw chuck.

[0088] In addition, the present application also provides a method for processing a bimetal composite pipe, including the steps:

[0089] S1: Sleeve the inner base pipe 8a and the outer covering pipe 8b to form a pre-assembled blank 8;

[0090] Specifically, provide the inner base pipe 8a and the outer covering pipe 8b, and sleeve the inner base pipe 8a inside the outer covering pipe 8b to form a pre-assembled blank 8. Among them, the material of the inner base pipe 8a can be selected according to actual needs, such as aluminum pipe, copper pipe, titanium pipe, steel pipe, etc.; the material of the outer covering pipe 8b can also be selected according to actual needs, such as titanium pipe, steel pipe, magnesium pipe, copper pipe, aluminum pipe, etc. The materials of the inner base pipe 8a and the outer covering pipe 8b are different.

[0091] In a specific example, the outer covering pipe 8b can be a titanium pipe of TA2 type, with an outer diameter of 76 mm, a thickness of 3 mm, and a length of 200 mm. The inner base pipe 8a is an aluminum pipe of 6063Al type, with an outer diameter of 70 mm, a thickness of 7.5 mm, and a length of 200 mm.

[0092] S2: Use the clamping and feeding device to clamp the pre-assembled blank 8 and drive the pre-assembled blank 8 to move near the drilling device 3 and the riveting device 2;

[0093] In this step, fix the pre-assembled blank 8 on the clamping and feeding device. The clamping and feeding device can drive the pre-assembled blank 8 to move near the drilling device 3 for subsequent drilling. The clamping and feeding device can also drive the pre-assembled blank 8 to move near the riveting device 2 for subsequent riveting.

[0094] When the clamping and feeding device includes a base 4, a mandrel carriage 5, a clamp 7, and a third slide rail 24, use the clamp 7 to clamp the pre-assembled blank 8, and the clamp 7 drives the pre-assembled blank 8 along the third slide rail 24 to drive the pre-assembled blank 8 to move near the drilling device 3 and the riveting device 2.

[0095] S3: Use the drilling device 3 to drill at least one hole at the end of the pre-assembled blank 8.

[0096] After the clamping and feeding device drives the pre-assembled blank 8 to move near the drilling device 3, move the drilling device 3 along the first slide rail 11 and the second slide rail 9 to a suitable position, and use the drilling device 3 to drill at least one hole at the end of the pre-assembled blank 8. It can be understood that after using the drilling device 3 to drill a hole at the end of the pre-assembled blank 8, the clamp 7 drives the pre-assembled blank 8 to rotate a preset angle, and then the drilling device 3 drills the pre-assembled blank 8 again. In this way, multiple holes are drilled at the end of the pre-assembled blank 8 in a cycle.

[0097] Exemplarily, when using the drilling device 3 to drill two holes at the end of the pre-assembled blank 8, after using the drilling device 3 to drill a hole at the end of the pre-assembled blank 8, the clamp 7 drives the pre-assembled blank 8 to rotate 180°, and then the drilling device 3 drills the pre-assembled blank 8 again; when using the drilling device 3 to drill three holes at the end of the pre-assembled blank 8, after using the drilling device 3 to drill a hole at the end of the pre-assembled blank 8, the clamp 7 drives the pre-assembled blank 8 to rotate 120°, the drilling device 3 drills the second hole in the pre-assembled blank 8, and then the clamp 7 drives the pre-assembled blank 8 to rotate 120° again, and the drilling device 3 drills the third hole in the pre-assembled blank 8.

[0098] S4: Use the riveting device 2 to rivet at the drilled holes on the pre-assembled blank 8.

[0099] After the clamping and feeding device drives the pre-assembled blank 8 to move near the riveting device 2, move the riveting device 2 along the first slide rail 11 and the second slide rail 9 to a suitable position, and use the riveting device 2 to rivet at the drilled holes on the pre-assembled blank 8 to fix the inner base tube 8a and the outer covering tube 8b together. It can be understood that when there are multiple drilled holes at the end of the pre-assembled blank 8, after riveting at the first drilled hole, the clamp 7 drives the pre-assembled blank 8 to rotate a preset angle, and the riveting device 2 rivets at the next drilled hole. In this way, riveting is performed at multiple drilled holes at the end of the pre-assembled blank 8 in a cycle.

[0100] Exemplarily, when two drill holes are opened at the end of the pre-assembled blank 8, after riveting at one drill hole of the pre-assembled blank 8 using the riveting device 2, the clamp 7 drives the pre-assembled blank 8 to rotate 180°, and the riveting device 2 performs riveting at the next drill hole again; when three drill holes are opened at the end of the pre-assembled blank 8, after riveting at one drill hole of the pre-assembled blank 8 using the riveting device 2, the clamp 7 drives the pre-assembled blank 8 to rotate 120°, the riveting device 2 performs riveting at the second drill hole of the pre-assembled blank 8, and then the clamp 7 drives the pre-assembled blank 8 to rotate 120° again, and the riveting device 2 performs riveting at the third drill hole of the pre-assembled blank 8.

[0101] S5: Use the clamping and feeding device to transfer the pre-assembled blank 8 and the mandrel 6 to the pipe rolling mill 10 for rolling, so that the pre-assembled blank 8 forms a bimetal composite pipe.

[0102] Specifically, after riveting, the inner base pipe 8a and the outer covering pipe 8b are relatively fixed, and then use the clamping and feeding device to transfer the pre-assembled blank 8 and the mandrel 6 to the pipe rolling mill 10 for rolling so that the pre-assembled blank 8 forms a bimetal composite pipe.

[0103] When the clamping and feeding device includes a base 4, a mandrel carriage 5, a clamp 7 and a third slide rail 24, use the mandrel carriage 5 to transfer the mandrel to the pipe rolling mill 10, and at the same time use the clamp 7 to transfer the pre-assembled blank 8 to the pipe rolling mill 10.

[0104] Compared with the prior art, the beneficial effects of the method for processing a bimetal composite pipe provided in this application are the same as those of the above-mentioned bimetal composite pipe processing equipment, and will not be elaborated here.

[0105] In another embodiment, after step S1 of sleeving the inner base pipe 8a and the outer covering pipe 8b to form the pre-assembled blank 8 and before step S2 of using the clamping and feeding device to clamp the pre-assembled blank 8, it further includes step S1': Seal the two ports of the pre-assembled blank 8 with a high-temperature resistant and flame-retardant adhesive and place it in a vacuum heating furnace for heat preservation within a preset temperature range. Specifically, after sealing the two ports of the pre-assembled blank 8 with a high-temperature resistant and flame-retardant adhesive, place the pre-assembled blank 8 in a vacuum heating furnace for heating and heat preservation. For the materials of the inner base pipe 8a and the outer covering pipe 8b, the temperature in the vacuum heating furnace can be adjusted adaptively. For example, when the inner base pipe 8a is a titanium pipe and the outer covering pipe 8b is an aluminum pipe, the temperature in the vacuum heating furnace is 400°C - 550°C, and the heat preservation time is 20 min - 40 min.

[0106] In addition, before the inner base tube 8a and the outer covering tube 8b are sleeved to form the pre-sleeved blank 8 in step S1, there is also a step S0: grinding the outer surface of the inner base tube 8a and the inner surface of the outer covering tube 8b, so that impurities such as oxides on the outer surface of the inner base tube 8a and the inner surface of the outer covering tube 8b can be removed, making the outer surface of the inner base tube 8a and the inner surface of the outer covering tube 8b cleaner.

[0107] In another embodiment, after the pre-sleeved blank 8 and the mandrel 6 are transported to the tube rolling mill 10 by the clamping and feeding device in step S5 and rolled to form the bimetal composite tube, there is also a step S5'; cutting the bimetal composite tube to obtain a bimetal composite tube with a preset length.

[0108] Specifically, both the drilling device 3 and the riveting device 2 are arranged on the second lead screw guide rail 9a through a connecting seat. The connecting seat includes an internal thread hole that can cooperate with the second lead screw guide rail 9a. The connecting seat can include a plurality of parts distributed circumferentially along its internal thread hole. The plurality of parts can move away from the second lead screw guide rail 9a to disconnect the internal thread hole of the connecting seat from the second lead screw guide rail 9a. The plurality of parts can move closer to the second lead screw guide rail 9a to thread-fit the internal thread hole of the connecting seat with the second lead screw guide rail 9a. A first limiting member 15a and a first position sensor 15b are arranged near the first end of the second lead screw guide rail 9a, and a second limiting member 15c and a second position sensor 15d are arranged near the second end of the second lead screw guide rail 9a.

[0109] In the above technical solution, in S3: at least one drilling is made at the end of the pre-sleeved blank 8 by the drilling device 3, which specifically includes: after the clamping and feeding device drives the pre-sleeved blank 8 to move to a suitable position, the second lead screw guide rail 9a rotates, the drilling device 3 moves along the second lead screw guide rail 9a to near the pre-sleeved blank 8, the drilling device 3 makes at least one drilling on the pre-sleeved blank 8. After the drilling is completed, the drilling device 3 moves along the second lead screw guide rail 9a in a direction away from the tube rolling mill 10 until the drilling device 3 passes the second position sensor 15d, and the internal thread hole of the connecting seat of the drilling device 3 is disconnected from the second lead screw guide rail 9a.

[0110] In S4: riveting is performed at the drilled hole of the pre-sleeved blank 8 by the riveting device 2, which specifically includes the second lead screw guide rail 9a rotating, the riveting device 2 moving along the second lead screw guide rail 9a to near the pre-sleeved blank 8, the riveting device 2 performing riveting at the drilled hole of the pre-sleeved blank 8. After the riveting is completed, the riveting device 2 moves along the second lead screw guide rail 9a in a direction away from the tube rolling mill 10 until the riveting device 2 passes the first position sensor 15b, and the internal thread hole of the connecting seat of the riveting device 2 is disconnected from the second lead screw guide rail 9a.

[0111] In step S3, ensure that the internal threaded hole of the connecting seat of the riveting device 2 is disengaged from the second lead screw guide 9a. In step S4, ensure that the internal threaded hole of the connecting seat of the drilling device 3 is disengaged from the second lead screw guide 9a.

[0112] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0113] As described above, the specific embodiments of the present application are only provided, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A bimetallic composite pipe processing device, characterized in that, Including: A support platform; A sliding component arranged on the support platform, the sliding component includes a first slide rail and a second slide rail, and the extending directions of the first slide rail and the second slide rail intersect; A drilling device arranged on the sliding component, the drilling device can slide along the extending direction of the first slide rail and the extending direction of the second slide rail, the drilling device is used for drilling a pre-assembled blank, and the depth of the drilling is greater than the thickness of the outer covering pipe and less than the sum of the thickness of the outer covering pipe and the thickness of the inner base pipe, so as to prevent the riveting part from penetrating through the inner base pipe; A riveting device arranged on the sliding component, the riveting device can slide along the extending direction of the first slide rail and the extending direction of the second slide rail, the riveting device is used for riveting the inner base pipe and the outer covering pipe of the pre-assembled blank; A clamping and feeding device for clamping the pre-assembled blank and driving the pre-assembled blank to move and rotate; A pipe rolling unit arranged on the support platform, the pipe rolling unit is used for rolling the pre-assembled blank to form a bimetal composite pipe, the drilling device, the riveting device and the pipe rolling unit are arranged in sequence, the drilling device and the riveting device are located on the inlet side of the pipe rolling unit, and the pre-assembled blank is pushed into the pipe rolling unit online through the clamping and feeding device; The first slide rail includes a first screw rod guide rail, and the sliding component further includes a first rotation driving part capable of driving the first screw rod guide rail to rotate; The second slide rail includes a second screw rod guide rail, and the sliding component further includes a second rotation driving part capable of driving the second screw rod guide rail to rotate; Both the drilling device and the riveting device are arranged on the second screw rod guide rail through a connecting seat, the connecting seat includes an internal thread hole capable of cooperating with the second screw rod guide rail, the connecting seat includes a plurality of parts distributed circumferentially along the internal thread hole thereof, and the plurality of parts can move away from the second screw rod guide rail so that the internal thread hole of the connecting seat is disengaged from the second screw rod guide rail, and the plurality of parts can approach the second screw rod guide rail so that the internal thread hole of the connecting seat is in threaded cooperation with the second screw rod guide rail; A first limiting part and a first position sensor are arranged near the first end of the second screw rod guide rail, and the first limiting part is located on one side of the first position sensor close to the first end of the second screw rod guide rail; a second limiting part and a second position sensor are arranged near the second end of the second screw rod guide rail, and the second limiting part is located on one side of the second position sensor close to the second end of the second screw rod guide rail; After the riveting device moves along the second screw rod guide rail to between the first position sensor and the first limiting part, the internal thread hole of the connecting seat of the riveting device is disengaged from the second screw rod guide rail; after the drilling device moves along the second screw rod guide rail to between the second position sensor and the second limiting part, the internal thread hole of the connecting seat of the drilling device is disengaged from the second screw rod guide rail.

2. The bimetallic composite pipe processing equipment according to claim 1, characterized in that, The number of the first slide rails is two, and both ends of the second slide rail are respectively arranged on the two first slide rails; Both the drilling device and the riveting device are arranged on the second slide rail.

3. The bimetal composite pipe processing equipment according to claim 1, characterized in that, The connecting seat further includes a split driving member capable of driving the split body to approach or move away from the second screw guide rail; The split driving member includes a telescopic cylinder and / or a linear motor.

4. The bimetallic composite pipe processing equipment according to claim 1, characterized in that, The drilling device includes a third screw guide rail, a third rotation driving member capable of driving the third screw guide rail to rotate, and a drilling machine arranged on the third screw guide rail. The extending direction of the third screw guide rail is along the vertical direction. The drilling device further includes a third limiting member arranged near the third screw guide rail; the riveting device includes a fourth screw guide rail, a fourth rotation driving member capable of driving the fourth screw guide rail to rotate, and a riveting gun arranged on the fourth screw guide rail. The extending direction of the fourth screw guide rail is along the vertical direction. The riveting device further includes a fourth limiting member arranged near the fourth screw guide rail.

5. The bimetal composite pipe processing equipment according to claim 1, characterized in that, The clamping and feeding device includes a base, a mandrel trolley arranged on the base, and a third slide rail arranged on the base. The clamping and feeding device further includes a clamp arranged on the third slide rail. The clamp can move along the extending direction of the third slide rail to approach or move away from the riveting device and the drilling device. The clamp can also drive the pre-assembled blank to rotate.

6. A method for processing a bimetallic composite pipe, characterized in that, Applying the bimetal composite pipe processing equipment according to any one of claims 1-5, including the steps of: Sleeving an inner base pipe and an outer covering pipe to form a pre-assembled blank; Using the clamping and feeding device to clamp the pre-assembled blank and drive the pre-assembled blank to move near the drilling device and the riveting device; Using the drilling device to open at least one hole at the end of the pre-assembled blank; Using the riveting device to perform riveting at the hole of the pre-assembled blank; Using the clamping and feeding device to transfer the pre-assembled blank and the mandrel to the tube rolling mill for rolling so that the pre-assembled blank forms a bimetal composite pipe.

7. The method for processing a bimetallic composite pipe according to claim 6, characterized in that, After sleeving the inner base pipe and the outer covering pipe to form a pre-assembled blank and before using the clamping and feeding device to clamp the pre-assembled blank, the method further includes the steps of: Sealing the two ends of the pre-assembled blank with a high-temperature resistant and flame retardant glue and placing it in a vacuum heating furnace for heat preservation within a preset temperature range; And / or, before sleeving the inner base pipe and the outer covering pipe to form a pre-assembled blank, the method further includes the step of: grinding the outer surface of the inner base pipe and the inner surface of the outer covering pipe; And / or, after using the clamping and feeding device to transfer the pre-assembled blank and the mandrel to the tube rolling mill for rolling so that the pre-assembled blank forms a bimetal composite pipe, the method further includes the step of: cutting the bimetal composite pipe.

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