A composite pipe blanking equipment

Abstract

The present invention discloses a composite pipe blanking device, which relates to the technical field of composite pipe blanking, and aims to solve the problems that when blanking a bimetallic composite pipe at present, manual operation is required, and the grinding and sleeving of the inner and outer pipes are carried out step by step, resulting in poor forming quality and low production efficiency of the bimetallic composite pipe. The device includes: a first grinding device, a second grinding device, a transmission device, and a blanking device; wherein, the transmission device is located between the first grinding device and the second grinding device. The transmission device includes a transmission frame body and two transmission tracks that are parallel to each other. The transmission tracks are movably arranged on the transmission frame body, and the moving directions of the two transmission tracks are both perpendicular to the axial directions of the first pipe and the second pipe; the blanking device has two ends respectively located on the opposite sides of the two transmission tracks. A pushing component is arranged on the blanking device, and the pushing component is used to push the first pipe and the second pipe respectively located on the two transmission tracks along the axial directions of the first pipe and the second pipe, so that the first pipe and the second pipe are nested to form a composite pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of compound pipe blanking, and particularly relates to a compound pipe blanking device. Background Art

[0002] The seamless bimetallic composite pipe combines the excellent properties of each component metal pipe. At the same time, to a certain extent, it can avoid the excessive use of rare metal and precious metal materials, greatly reducing the production cost, and has great potential market application value. Therefore, it is widely used in fields such as aerospace, oil extraction, transportation of corrosive media in the chemical industry, military, and nuclear power.

[0003] At present, the main methods for producing bimetallic composite pipes are as follows: explosive cladding method, drawing cladding method, three-roll skew rolling method, etc. The three-roll skew rolling process is a rolling process of local loading and axial continuous forming. The formed bimetallic composite pipe has the characteristics of high bonding strength and high production efficiency. Therefore, the three-roll skew rolling seamless bimetallic composite pipe has become one of the most promising seamless metal composite pipe preparation technologies.

[0004] The blanking process of the three-roll skew rolling bimetallic composite pipe has a key influence on the forming performance of the bimetallic composite pipe. In the current existing technology, the blanking process of the bimetallic composite pipe is generally manually operated, and the inner and outer pipes are polished and sleeved step by step. This blanking method will undoubtedly reduce the forming quality stability and production efficiency of the bimetallic composite pipe. Therefore, it is urgent to develop a special device for blanking bimetallic composite pipes. Summary of the Invention

[0005] The purpose of the present invention is to provide a compound pipe blanking device to solve the problems of poor forming quality and low production efficiency of the bimetallic composite pipe caused by manual operation and the step-by-step polishing and sleeving of the inner and outer pipes during the blanking of the bimetallic composite pipe at present.

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

[0007] A compound pipe blanking device includes:

[0008] A first polishing device, which is used to polish the inner wall of the first pipe and transport the first pipe;

[0009] A second polishing device, which is used to polish the outer wall of the second pipe and transport the second pipe;

[0010] A transmission device, which is located between the first polishing device and the second polishing device. The transmission device includes a transmission frame body and two parallel transmission tracks. The transmission tracks are movably arranged on the transmission frame body. The two transmission tracks are used to respectively carry the first pipe and the second pipe and drive the first pipe and the second pipe to move. The moving directions of the two transmission tracks are both perpendicular to the axial directions of the first pipe and the second pipe;

[0011] The blank forming device has two ends respectively located on the opposite sides of two conveying tracks. A pushing component is arranged on the blank forming device, and the pushing component is used to push the first pipe and the second pipe located on the two conveying tracks along the axial directions of the first pipe and the second pipe, so that the first pipe and the second pipe are nested to form a composite pipe blank.

[0012] Optionally, in the above-mentioned composite pipe blank forming equipment, the conveying device includes two conveying units. Each conveying unit includes a conveying frame body and a conveying track. The two conveying units are arranged parallel to each other and are located between the first grinding device and the second grinding device.

[0013] Optionally, in the above-mentioned composite pipe blank forming equipment, the conveying unit further includes:

[0014] The first lead screw slider mechanism is fixedly arranged on the conveying frame body. The first lead screw slider mechanism includes a lead screw and a first slider that can move along the lead screw. The moving direction of the first slider is perpendicular to the axial directions of the first pipe and the second pipe;

[0015] The lifting component, one end of the lifting component is fixedly arranged on the first slider, and the other end of the lifting component is fixedly connected to the conveying track;

[0016] The support platform is fixedly arranged on the conveying frame body. The support platform is located above the conveying track and is used to receive the first pipe and the second pipe respectively from the first grinding device and the second grinding device.

[0017] Optionally, in the above-mentioned composite pipe blank forming equipment, a plurality of groups of limiting grooves are formed on the conveying track. The plurality of groups of limiting grooves are arranged along the direction perpendicular to the axial directions of the first pipe and the second pipe, and the limiting grooves are used to accommodate and limit the first pipe and the second pipe.

[0018] Optionally, in the above-mentioned composite pipe blank forming equipment, the blank forming device includes:

[0019] The blank forming bracket, and the two ends of the blank forming bracket are respectively located on the opposite sides of the two conveying tracks;

[0020] Two second lead screw slider mechanisms are arranged in parallel on the blank forming bracket. The two second lead screw slider mechanisms include two second sliders. The moving directions of the two second sliders are perpendicular to the moving direction of the conveying track. The second sliders have pushing ends, and the pushing ends are used to push the first pipe and the second pipe located on the two conveying tracks respectively, so that the first pipe and the second pipe are nested to form a composite pipe blank.

[0021] Optionally, in the above-mentioned composite pipe blank forming equipment, the first grinding device includes:

[0022] The first grinding bracket;

[0023] Two first support rollers arranged side by side; one of the first support rollers is rotatably arranged on the first grinding bracket, and the other first support roller is fixedly arranged on the first grinding bracket. The axis of the rotatably arranged first support roller is inclined relative to the horizontal plane. The two first support rollers are used to place the first pipe and move the first pipe to the transfer track adjacent to the first support rollers;

[0024] A first driving motor, the driving end of the first driving motor is connected to the first support roller, and is used to drive the first support roller to rotate;

[0025] A pressing component, the pressing component is fixedly connected to the grinding bracket. The pressing component has a pressing end located above the first support roller and movable along the direction of the first support roller. The pressing end is used to fix the relative position of the first pipe and the first grinding bracket;

[0026] A first grinding table, the first grinding table is movably arranged on the first grinding bracket along a direction close to or away from the first support roller;

[0027] A first grinding motor, the first grinding motor is fixedly arranged on the first grinding table;

[0028] A first grinding part, the first grinding part is fixedly arranged on the driving end of the first grinding motor, and is used to grind the inner wall of the first pipe.

[0029] Optionally, in the above-mentioned composite pipe blanking equipment, the pressing component includes:

[0030] A pressing table, the pressing table is fixedly arranged on one side of the grinding bracket;

[0031] A pressing-down motor, the pressing-down motor is fixedly arranged on the pressing table;

[0032] A pulley, the pulley is fixedly arranged on the driving end of the pressing-down motor, and the pressing-down motor is used to press the pulley down to contact the first pipe.

[0033] Optionally, in the above-mentioned composite pipe blanking equipment, the second grinding device includes:

[0034] A second grinding bracket;

[0035] Two second support rollers, one of the second support rollers is rotatably arranged on the second grinding bracket, and the other second support roller is fixedly arranged on the second grinding bracket. The axis of the rotatably arranged second support roller is inclined relative to the horizontal plane. The two second support rollers are used to place the second pipe and move the second pipe to the transfer track adjacent to the second support rollers;

[0036] A second driving motor, the driving end of the second driving motor is connected to the second support roller, and is used to drive the second support roller to rotate;

[0037] The second grinding table is movably arranged on the second grinding bracket along the direction of approaching or departing from the second support roller;

[0038] The second grinding motor is fixedly arranged on the second grinding table;

[0039] The second grinding component is fixedly connected to the driving end of the second grinding motor and is used for grinding the outer wall of the second pipe.

[0040] Optionally, in the above-mentioned composite pipe blanking equipment, the composite pipe blanking equipment further includes a welding device. The two ends of the welding device are respectively located on the opposite sides of the transmission device. The welding device includes a welding bracket and two relatively arranged welding components. The welding components are movably arranged on the welding bracket along the direction perpendicular to the transmission track. The welding components have welding parts that can move in the horizontal and vertical directions, and the welding parts are used for welding the two ends of the composite pipe blank respectively.

[0041] Optionally, in the above-mentioned composite pipe blanking equipment, the composite pipe blanking equipment further includes two conveying devices, which are respectively located between the first grinding device and the transmission track and between the second grinding device and the transmission track. The conveying device includes:

[0042] A conveying frame;

[0043] A plurality of V-shaped pulleys are arranged on the conveying frame at intervals, and the V-shaped pulleys are used for transmitting the first pipe or the second pipe;

[0044] A conveying motor is fixedly arranged on the conveying frame, and the driving end of the conveying motor is in transmission connection with the plurality of V-shaped pulleys and is used for driving the V-shaped pulleys to rotate.

[0045] Compared with the prior art, in the composite pipe blanking equipment provided by the present invention, when blanking the composite pipe, first place the first pipe into the first grinding device, and the first grinding device grinds its inner wall; at the same time, place the second pipe into the second grinding device, and the second grinding device grinds its outer wall. The first pipe and the second pipe after grinding are respectively transported to the two transmission tracks of the transmission device. Since the transmission track is movably arranged on the transmission frame body and the moving direction is perpendicular to the axial directions of the first pipe and the second pipe, the transmission track drives the first pipe and the second pipe to move, transports them to near the blanking device, and completes the transfer of materials from the grinding device to the blanking device. When the first pipe and the second pipe are transported to the corresponding positions of the blanking device, the pushing components on the blanking device start to work. The pushing components push the first pipe and the second pipe respectively located on the two transmission tracks along the axial directions of the first pipe and the second pipe, so that the first pipe and the second pipe approach each other and are nested together, and finally form a composite pipe, completing the entire blanking process of the composite pipe. While improving the forming quality of the composite pipe, the production efficiency is also improved. Description of the Drawings

[0046] The accompanying drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0047] Figure 1 is a schematic diagram of the overall structure of a composite pipe blanking device proposed in an embodiment of the present invention;

[0048] Figure 2 is a schematic diagram of the structure of a first grinding device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0049] Figure 3 is a schematic diagram of the structure of a second grinding device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0050] Figure 4 is a schematic diagram of the structure of a blanking device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0051] Figure 5 is a schematic diagram of the structure of a transmission device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0052] Figure 6 is a schematic diagram of the cooperation between the transmission device and the blanking device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0053] Figure 7 is a schematic diagram of the structure of a welding device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0054] Figure 8 is an enlarged schematic diagram of a welding device of a composite pipe blanking device proposed in an embodiment of the present invention;

[0055] Figure 9 is a schematic diagram of the structure of a conveying device of a composite pipe blanking device proposed in an embodiment of the present invention.

[0056] Reference numerals: 1 is the first grinding device, 110 is the first grinding bracket, 120 is the first support roller, 130 is the first driving motor, 140 is the pressing assembly, 141 is the pressing table, 142 is the pressing-down motor, 143 is the pulley, 150 is the first grinding table, 160 is the first grinding motor, 170 is the first grinding member, 2 is the second grinding device, 210 is the second grinding bracket, 220 is the second support roller, 230 is the second driving motor, 240 is the second grinding table, 250 is the second grinding motor, 260 is the second grinding member, 3 is the conveying device, 310 is the conveying unit, 3110 is the conveying frame body, 3120 is the conveying track, 3121 is the limiting groove, 3130 is the first lead screw slider mechanism, 3131 is the first slider, 3140 is the lifting member, 3150 is the support table, 4 is the blank assembling device, 410 is the blank assembling bracket, 420 is the second lead screw slider mechanism, 4210 is the second slider, 4211 is the pushing end, 5 is the welding device, 510 is the welding bracket, 520 is the welding assembly, 521 is the welding part, 5210 is the welding slide table, 5211 is the first welding lead screw slider mechanism, 5212 is the second welding lead screw slider mechanism, 6 is the conveying device, 610 is the conveying frame, 620 is the V-shaped pulley, 630 is the conveying motor. Detailed implementation manners

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] 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.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0060] In the description of the present invention, 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. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0061] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 invention can be understood according to specific circumstances.

[0062] Please refer to Figure 1 and Figure 6 The composite tube blanking device provided by the embodiment of the present invention includes: a first grinding device 1, a second grinding device 2, a transmission device 3, and a blanking device 4; wherein, the first grinding device 1 is used for grinding the inner wall of the first tube and transporting the first tube; the second grinding device 2 is used for grinding the outer wall of the second tube and transporting the second tube; the transmission device 3 is located between the first grinding device 1 and the second grinding device 2. The transmission device 3 includes a transmission frame 3110 and two parallel transmission tracks 3120. The transmission tracks 3120 are movably arranged on the transmission frame 3110. The two transmission tracks 3120 are used for respectively carrying the first tube and the second tube and driving the first tube and the second tube to move. The moving directions of the two transmission tracks 3120 are both perpendicular to the axial directions of the first tube and the second tube; the blanking device 4 has two ends respectively located on the opposite sides of the two transmission tracks 3120. A pushing member is provided on the blanking device 4. The pushing member is used for pushing the first tube and the second tube located on the two transmission tracks 3120 along the axial directions of the first tube and the second tube, so that the first tube and the second tube are nested to form a composite tube blank.

[0063] During specific implementation: Please refer to Figure 1 and Figure 6, first, place the first tube into the first grinding device 1, and the first grinding device 1 grinds its inner wall; at the same time, place the second tube into the second grinding device 2, and the second grinding device 2 grinds its outer wall. The first tube and the second tube after grinding are respectively transported to two transport tracks 3120 of the transport device 3. Since the transport track 3120 is movably arranged on the transport frame 3110 and the moving direction is perpendicular to the axial directions of the first tube and the second tube, the transport track 3120 drives the first tube and the second tube to move, transporting them to the vicinity of the blank assembling device 4, and completing the transfer of the material from the grinding device to the blank assembling device 4. When the first tube and the second tube are transported to the corresponding positions of the blank assembling device 4, the pushing component on the blank assembling device 4 starts to work. The pushing component pushes the first tube and the second tube respectively located on the two transport tracks 3120 along the axial directions of the first tube and the second tube, making the first tube and the second tube approach each other and nest together, finally forming a composite tube and completing the entire blank assembling process of the composite tube. While improving the forming quality of the composite tube, the production efficiency is also increased.

[0064] As a possible implementation, as Figure 5 and Figure 6 shown, the transport device 3 includes two transport units 310. Each transport unit 310 includes a transport frame 3110 and a transport track 3120. The two transport units 310 are arranged relatively parallel and are located between the first grinding device 1 and the second grinding device 2. One ends of the two transport units 310 are respectively close to the first grinding device 1 and the second grinding device 2, ensuring that the first tube or the second tube after being ground by the first grinding device 1 or the second grinding device 2 can be smoothly transferred onto the transport track 3120.

[0065] In specific implementation, after the inner wall of the first pipe is polished by the first polishing device 1, the transfer unit 310 moves along the transfer track 3120 close to the first polishing device 1 to a suitable position to receive the first pipe. At the same time, after the outer wall of the second pipe is polished by the second polishing device 2, it is received by the transfer track 3120 of another transfer unit 310. At this time, since the transfer track 3120 is arranged on the transfer frame 3110 and is movable, the transfer track 3120 moves along a direction perpendicular to the axial directions of the first pipe and the second pipe, driving the first pipe and the second pipe carried thereon to move towards the pipe assembling device 4. In this process, the two transfer units 310 work synchronously to ensure that the first pipe and the second pipe can reach the corresponding positions of the pipe assembling device 4 simultaneously or at an appropriate time, so that the first pipe and the second pipe are in a coaxial relative position and reach the pipe assembling device 4. By arranging two relatively parallel transfer units 310 in this way, each transfer unit 310 has an independent transfer frame 3110 and transfer track 3120. This independent design makes the entire transfer device 3 more flexible in spatial layout and can be reasonably arranged according to the actual situation of the operation space. At the same time, when maintaining and overhauling the equipment, each transfer unit 310 can also be operated separately, reducing the difficulty and cost of maintenance.

[0066] Further, as Figure 5 and Figure 6 shown, the transfer unit 310 further includes a first lead screw slider mechanism 3130, a lifting member 3140, and a support table 3150. Among them, the first lead screw slider mechanism 3130 is fixedly arranged on the transfer frame 3110. The first lead screw slider mechanism 3130 includes a lead screw and a first slider 3131 that can move along the lead screw. The moving direction of the first slider 3131 is perpendicular to the axial directions of the first pipe and the second pipe. One end of the lifting member 3140 is fixedly arranged on the slider, and the other end of the lifting member 3140 is fixedly connected to the transfer track 3120. The support table 3150 is fixedly arranged on the transfer frame 3110. The support table 3150 is located above the transfer track 3120 and is used to receive the first pipe and the second pipe respectively from the first polishing device 1 and the second polishing device 2.

[0067] In specific implementation, after the first tube and the second tube are polished, they are sent to the support table 3150 of the transfer unit 310, and the support table 3150 provides an initial support position for the first tube and the second tube. Then, in order to transfer the first tube and the second tube from the support table 3150 to the transfer track 3120, the lifting component 3140 is activated. The lifting component 3140 drives the transfer track 3120 to rise. When the transfer track 3120 rises to the same horizontal plane as the support table 3150, a height difference will be generated if it continues to rise. This height difference will cause the first tube and the second tube to be transferred from the support table 3150 to the transfer track 3120 under the action of gravity and the contact of the transfer track 3120. At this time, the lead screw of the first lead screw slider mechanism 3130 starts to rotate, driving the first slider 3131 to move. Since the first slider 3131 is fixedly connected to the transfer track 3120, the first slider 3131 moves along the axial direction perpendicular to the first tube and the second tube, transporting the first tube and the second tube to the positions required for the blank assembly process, and completing the transfer process of the first tube and the second tube.

[0068] Through the coordinated work of the lifting component 3140, the support table 3150 and the transfer track 3120, the smooth transfer of the first tube and the second tube from the support table 3150 to the transfer track 3120 is realized, reducing the errors and instabilities during the transfer and transportation process, and improving the automation degree and accuracy of the transfer and transportation of the first tube and the second tube.

[0069] It should be noted that the lifting component 3140 can be a hydraulic cylinder. The hydraulic cylinder is fixedly arranged on the first slider 3131, and the pushing end of the hydraulic cylinder is fixedly connected to the transfer track 3120. It can provide a large thrust, and the movement speed can be controlled by adjusting the flow rate of the hydraulic oil, enabling a smooth lifting movement and ensuring the smooth transfer of the first tube and the second tube; the lifting component 3140 can be an electric push rod. One end of the electric push rod is connected to the first slider 3131, and the other end is connected to the transfer track 3120. When the motor is started, the push rod will extend or retract according to the rotation direction of the motor, thereby pushing the transfer track 3120 to rise or fall; the lifting component 3140 can also be a pneumatic push rod.

[0070] As a possible implementation manner, as Figure 5 shown, a plurality of groups of limiting grooves 3121 are formed on the transfer track 3120. The plurality of groups of limiting grooves 3121 are arranged along the axial direction perpendicular to the first tube and the second tube, and the limiting grooves 3121 are used to accommodate and limit the first tube and the second tube.

[0071] A plurality of limiting grooves 3121 are provided on the transmission track 3120, and the arrangement direction of these limiting grooves 3121 is along the direction perpendicular to the axial directions of the first pipe and the second pipe. The limiting grooves 3121 are used to accommodate and limit the first pipe and the second pipe. When the first pipe and the second pipe are placed on the transmission track 3120, they will be embedded in the corresponding limiting grooves 3121, and the limiting grooves 3121 can limit the movement of the first pipe and the second pipe in the direction perpendicular to their axial directions, ensuring that they maintain a stable position during the transmission process and will not shift, shake, etc.

[0072] Further, a plurality of limiting grooves arranged perpendicular to the axial directions of the first pipe and the second pipe are also provided on the support platform 3150, that is, during the entire transmission stage of the first pipe and the second pipe, whether the first pipe and the second pipe waiting for transmission on the support platform 3150 or the first pipe and the second pipe being transported on the transmission track 3120, their positions can be limited by the limiting grooves. When the first pipe and the second pipe are placed on the support platform 3150, they will be placed in the limiting grooves on the support platform 3150, which can ensure that they maintain a stable position during the process of waiting to enter the transmission track 3120 and will not roll or move randomly; and when they are transferred from the support platform 3150 to the transmission track 3120, since there are also limiting grooves 3121 arranged in the same direction on the transmission track 3120, their positions can be kept consistent, ensuring the coherence and stability of the entire process.

[0073] In the subsequent blank assembling process, the precise positions of the first pipe and the second pipe are crucial. The provision of the limiting grooves 3121 ensures that the positions of the first pipe and the second pipe remain consistent when they are transmitted to each processing station. During the blank assembling process, only when the first pipe and the second pipe are accurately in the predetermined positions can it be ensured that they can be nested to form a composite pipe and the quality and precision of the composite pipe can be guaranteed. If the positions of the first pipe or the second pipe shift during the transmission process, it may lead to insufficient concentricity of the composite pipe and the failure of blank assembling, and the existence of the limiting grooves 3121 provides a prerequisite for ensuring the processing precision.

[0074] As a possible implementation manner, as Figure 4 shown, the blank assembling device 4 includes a blank assembling bracket 410 and two second lead screw slider mechanisms 420; wherein, both ends of the blank assembling bracket 410 are respectively located on the opposite sides of the two transmission tracks 3120; the two second lead screw slider mechanisms 420 are arranged in parallel on the blank assembling bracket 410, the two second lead screw slider mechanisms 420 include two second sliders 4210, the moving directions of the two second sliders 4210 are perpendicular to the moving direction of the transmission track 3120, and the second sliders 4210 have a pushing end 4211, and the pushing end 4211 is used to push the first pipe and the second pipe respectively located on the two transmission tracks 3120, so that the first pipe and the second pipe are nested to form a composite pipe.

[0075] The blank forming support 410 is the basic structure of the blank forming device 4. Its two ends are respectively located on the opposite sides of the two conveying tracks 3120. This design enables the blank forming support 410 to span across the two conveying tracks 3120, providing a support platform for subsequent blank forming operations. Two second lead screw slider mechanisms 420 are arranged in parallel on the blank forming support 410. Each second lead screw slider mechanism 420 includes a second slider 4210. The moving directions of these second sliders 4210 are perpendicular to the moving direction of the conveying track 3120. When the second lead screw slider mechanism 420 works, the second slider 4210 moves in a direction perpendicular to the moving direction of the conveying track 3120. And the second slider 4210 has a pushing end 4211, and the function of this pushing end 4211 is to push the first pipe and the second pipe respectively located on the two conveying tracks 3120. Through the action of the pushing end 4211, the first pipe and the second pipe can move towards each other and finally nest together to form a composite pipe.

[0076] During specific implementation: The first pipe and the second pipe are respectively transported to the lower position of the blank forming device 4 on the two conveying tracks 3120. At this time, due to the limiting structures (such as the limiting groove 3121 mentioned before) existing on the conveying track 3120, their positions are relatively fixed. When the first pipe and the second pipe reach the predetermined positions, the blank forming device 4 starts to work, and the lead screws in the two second lead screw slider mechanisms 420 start to rotate. The rotation of the lead screw drives the second slider 4210 cooperating with it to move on a straight line perpendicular to the moving direction of the conveying track 3120. As the second slider 4210 moves, its pushing end 4211 gradually approaches and contacts the first pipe and the second pipe. Since the two second sliders 4210 are arranged in parallel and move simultaneously, their pushing ends 4211 will respectively push the first pipe and the second pipe to move towards each other along the conveying track 3120. During the pushing process, the first pipe and the second pipe will gradually approach until they nest together to form a composite pipe. Through the precise control of the second lead screw slider mechanism 420 in the whole process, the pushing distance can be accurately adjusted to ensure that the first pipe and the second pipe can be nested tightly and accurately, guaranteeing the quality and precision of the composite pipe. This layout method where the blank forming support 410 spans across the opposite sides of the two conveying tracks 3120 makes the blank forming device 4 more stable in structure. This stable structure can withstand the acting forces generated during the pushing process, is not prone to shaking or deformation, and increases the reliability of the whole device.

[0077] Furthermore, as Figure 4As shown, the connection line of the two pushing ends 4211 is parallel to the axes of the first tube and the second tube. This enables the forces applied to the first tube and the second tube at the pushing ends 4211 to be evenly and symmetrically distributed during the pushing process. With such an arrangement, during the process of the first tube and the second tube approaching and nesting with each other, they will not shift or twist due to uneven force, improving the concentricity of the composite tube, and thus enhancing the billet forming quality and efficiency.

[0078] It should be noted that after the composite tube is formed by nesting, the composite tube is located on any single transfer track 3120 so that the moving transfer track 3120 can transfer the composite tube to the welding station. Specifically, in implementation, a second slider 4210 can be fixed at one end of the billet forming bracket 410, such that one end of the first tube or the second tube abuts against the stationary second slider 4210, and the other second slider 4210 is moved to push the second tube or the first tube so that the two are nested to form a composite tube. In this way, the composite tube after billet forming can be made to be on a certain transfer track 3120, thus facilitating transportation to the welding station.

[0079] As a possible implementation, as Figure 2 shown, the first grinding device 1 includes a first grinding bracket 110, two first support rollers 120, a first drive motor 130, a pressing component 140, a first grinding table 150, a first grinding motor 160, and a first grinding component 170; wherein, one of the first support rollers 120 is rotatably arranged on the first grinding bracket 110, and the other first support roller 120 is fixedly arranged on the first grinding bracket 110. The axis of the rotatably arranged first support roller 120 is inclined relative to the horizontal plane. The upper part of the gap between the two first support rollers 120 is used for placing the first tube and moving the first tube to the adjacent transfer track 3120 of the first support roller 120; the drive end of the first drive motor 130 is connected to the first support roller 120 for driving the first support roller 120 to rotate; the pressing component 140 is fixedly connected to the first grinding bracket 110, and the pressing component 140 has a pressing end located above the first support roller 120 and movable along the direction of the first support roller 120. The pressing end is used for fixing the relative position of the first tube and the first grinding bracket 110; the first grinding table 150 is movably arranged on the first grinding bracket 110 along the direction of approaching or departing from the first support roller 120; the first grinding motor 160 is fixedly arranged on the first grinding table 150; the first grinding component 170 is fixedly arranged on the drive end of the first grinding motor 160 for grinding the inner wall of the first tube.

[0080] During specific implementation: First, place the first pipe on two first support rollers 120. Since the axis of the first support roller 120 rotatably arranged on the first grinding bracket 110 is inclined relative to the horizontal plane, and the first support roller 120 is driven to rotate by the first drive motor 130. When the first drive motor 130 is started, it drives the connected first support roller 120 to rotate, and the first pipe placed on the first support roller 120 will roll along the inclined surface of the first support roller 120, so as to move from the placement position to the transfer track 3120 adjacent to the first support roller 120. After the first pipe moves to a suitable position, the pressing component 140 comes into play. The pressing component 140 is fixed on the first grinding bracket 110, and its pressing end is located above the first support roller 120 and can move along the direction of the first support roller 120. By adjusting the position of the pressing end, it contacts the first pipe and applies a certain pressure, so as to fix the position of the first pipe on the first support roller 120, ensuring that the first pipe will not be displaced during the grinding process and guaranteeing the stability of grinding. Then, perform the grinding operation on the first pipe. The first grinding table 150 moves on the first grinding bracket 110 in a direction close to or away from the first support roller 120 until the first grinding part 170 can accurately contact the inner wall of the first pipe. The first grinding motor 160 is fixed on the first grinding table 150. When the first grinding motor 160 is started, its drive end drives the first grinding part 170 to rotate at a high speed. The rotating first grinding part 170 grinds the inner wall of the first pipe. After grinding is completed, first loosen the pressing component 140 to release the fixed state of the first pipe. Then the first support roller 120 rotates, and the ground first pipe rolls along the inclined surface of the first support roller 120 to the transfer track 3120, and is conveyed to the next process by the transfer track 3120. With such a setting, the first pipe is placed on the inclined first support roller 120, and by driving the rotation of the first support roller 120, the rotation of the first pipe can be driven, so that the first pipe naturally moves along the inclined direction. Only a relatively small driving force is required to achieve the efficient transportation of the first pipe, reducing the energy consumption of the equipment and improving the energy utilization efficiency. At the same time, this simple mechanical transmission method makes the overhaul and maintenance of the device simple and ensures the production efficiency. In addition, a pressing component 140 is arranged above the first support roller 120. When the first pipe moves to a specific position, pressing down or lifting the pressing component 140 can selectively fix the relative position of the first pipe and the first support roller 120, so that the position of the first grinding table 150 can be further adjusted to accurately grind the axial direction of the inner wall of the first pipe. The pressing component 140 can ensure that the first pipe always maintains a stable position during the grinding process, avoiding grinding errors caused by the displacement of the first pipe, and improving the uniformity and precision of grinding.

[0081] Further, as Figure 2As shown, the pressing assembly 140 includes a pressing table 141, a pressing-down motor 142, and a pulley 143. Among them, the pressing table 141 is fixedly provided on one side of the grinding bracket; the pressing-down motor 142 is fixedly arranged on the pressing table 141; the pulley 143 is fixedly provided on the driving end of the pressing-down motor 142, and the pressing-down motor 142 is used to press the pulley 143 down until it contacts the first pipe.

[0082] The pressing assembly 140 is mainly composed of three parts: a pressing table 141, a pressing-down motor 142, and a pulley 143. The pressing table 141 plays a role in basic support and installation. The pressing table 141 is fixedly installed on one side of the first grinding bracket 110, providing an installation carrier for the pressing-down motor 142 and the pulley 143. The pressing-down motor 142 is fixed on the pressing table 141 and can press the pulley 143 down to contact the first pipe. After the pulley 143 contacts the first pipe, a downward pressure will be generated on the first pipe, and this pressure can tightly press the first pipe against the first support roller 120, thereby fixing the relative positions of the first pipe and the first support roller 120 and meeting the stability requirements for subsequent grinding of the inner wall of the first pipe.

[0083] During specific implementation: Before the first pipe is placed on the first support roller 120 and moved to a specific position, the pulley 143 of the pressing component 140 is in a higher position and will not interfere with the first pipe, ensuring that the first pipe can move smoothly on the first support roller 120. When the first pipe moves to the predetermined grinding position, the lowering motor 142 is started, and its driving end drives the pulley 143 to move downward. As the pulley 143 descends, the pulley 143 gradually comes into contact with the surface of the first pipe. Due to the frictional force between the pulley 143 and the first pipe, when the pulley 143 continues to press down, a downward pressure will be generated on the first pipe, and this pressure is transmitted to the first support roller 120 through the first pipe, thereby fixing the first pipe tightly on the first support roller 120 and restricting the displacement and shaking of the first pipe during the grinding process. After the first pipe is fixed, the first grinding table 150 can be adjusted in position as needed, and then the first grinding motor 160 drives the first grinding component 170 to grind the inner wall of the first pipe. During the entire grinding process, the lowering motor 142 keeps working to maintain the pressure of the pulley 143 on the first pipe, ensuring that the first pipe is always in a stable fixed state. When the inner wall of the first pipe is ground, the lowering motor 142 rotates in reverse, and its driving end drives the pulley 143 to move upward, separating the pulley 143 from the first pipe and releasing the fixation of the first pipe so that the first pipe can be conveyed to the next process. With such a setting, by operating the lowering motor 142, the downward pressing stroke and speed of the pulley 143 can be precisely controlled, and at the same time, the magnitude of the pressure exerted by the pulley 143 on the first pipe can be accurately controlled. Different pressures can be used for pipes of different materials. A smaller pressure can avoid damage to the pipe, and a larger pressing force can ensure the stability of the pipe during the grinding process, guaranteeing the grinding quality. At the same time, the design method of the pulley 143 in contact with the first pipe can effectively reduce the wear on the surface of the first pipe compared with some rigid pressing structures. The pulley 143 has rolling friction with the first pipe during rotation, compared with the sliding friction of some rigid pressing structures. This not only reduces the degree of wear on the surface of the first pipe but also reduces the energy consumption when the pressing component 140 works. At the same time, due to the rolling characteristics of the pulley 143, the impact force on the first pipe during the pressing and releasing processes is small, further protecting the surface quality and structural integrity of the first pipe.

[0084] As a possible implementation, such as Figure 3As shown in the figure, the second grinding device 2 includes a second grinding bracket 210, two second support rollers 220, a second drive motor 230, a second grinding table 240, a second grinding motor 250, and a second grinding component 260. One of the second support rollers 220 is rotatably arranged on the second grinding bracket 210, and the other second support roller 220 is fixedly arranged on the second grinding bracket 210. The axis of the second support roller 220 rotatably arranged on the second grinding bracket 210 is inclined relative to the horizontal plane. The upper parts of the two second support rollers 220 are used to place the second pipe and move the second pipe to the adjacent transfer track 3120 of the second support roller 220. The second grinding table 240 is movably arranged on the second grinding bracket 210 in a direction close to or away from the second support roller 220. The second grinding motor 250 is fixedly arranged on the second grinding table 240. The second grinding component 260 is fixedly connected to the driving end of the second grinding motor 250 and is used to grind the outer wall of the second pipe.

[0085] The second grinding bracket 210 is the basic framework of the second grinding device 2, which plays a role in supporting and fixing other components, providing a stable platform for the entire grinding process. Other components such as the second support rollers 220, the second grinding table 240, and the second grinding motor 250 are all installed on it. Two second support rollers 220 are provided on the second grinding device 2. One is rotatably installed on the second grinding bracket 210, and the other is fixed on the bracket. The axes of the two second support rollers 220 are inclined relative to the horizontal plane. The upper part of the gap between them is used as the placement position of the second pipe. Driven by the rotating second support roller 220, the second pipe can move along the inclined surface of the support roller and is finally transported to the adjacent transfer track 3120 of the second support roller 220, realizing the transfer function of the second pipe. The second grinding table 240 can move on the second grinding bracket 210 in a direction close to or away from the second support roller 220. This movable design enables it to flexibly adjust the distance from the second pipe to meet the requirements for grinding the outer wall of the second pipe. The second grinding motor 250 is fixedly installed on the second grinding table 240, providing rotational power for the second grinding component 260. The second grinding component 260 is connected to the driving end of the second grinding motor 250 and rotates under the drive of the second grinding motor 250, directly contacting the outer wall of the second pipe to grind it.

[0086] During specific implementation: First, place the second pipe on the upper part of the gap between the two second support rollers 220. Since one of the second support rollers 220 is driven by the second drive motor 230 to rotate, the second pipe will roll along the inclined surface of the support roller by using the frictional force, so as to move from the placement position to the transfer track 3120 adjacent to the second support roller 220. After the second pipe is transferred to the appropriate position, adjust the position of the second grinding table 240. By moving the second grinding table 240, a suitable distance is achieved between the second grinding motor 250 and the second grinding component 260 mounted thereon and the outer wall of the second pipe. When the second grinding table 240 is adjusted in place, start the second grinding motor 250. The driving end of the second grinding motor 250 drives the second grinding component 260 to rotate at a high speed. The rotating second grinding component 260 grinds the outer wall of the second pipe. During the grinding process, as the second pipe moves on the second support roller 220, the entire outer wall of the second pipe is comprehensively ground. After grinding, the second pipe continues to roll along the inclined second support roller 220 onto the transfer track 3120, and is conveyed to the next process by the transfer track 3120.

[0087] With such a setting, the movable design of the second grinding table 240 enables the second grinding component 260 to accurately adjust the contact position and grinding force with the outer wall of the second pipe. By adjusting the relative position between the second grinding table 240 and the second pipe, it is ensured that the second grinding component 260 can evenly grind the entire outer wall, improving the evenness and precision of grinding. At the same time, place the second pipe on the inclined second support roller 220, and the rotation of the second support roller 220 can drive the rotation of the second pipe, so that the second pipe naturally moves along the inclined direction. Only a small driving force is required to achieve the efficient transportation of the second pipe, reducing the energy consumption of the equipment and improving the energy utilization efficiency. At the same time, this simple mechanical transmission method makes the maintenance and repair of the device simple and ensures the production efficiency.

[0088] As a possible implementation method, as Figure 7 and Figure 8 shown, the composite pipe blanking equipment further includes a welding device 5. The two ends of the welding device 5 are respectively located on the opposite sides of the transfer device 3. The welding device 5 includes a welding bracket 510 and two relatively arranged welding components 520. The welding components 520 are movably arranged on the welding bracket 510 along the direction perpendicular to the transfer track 3120. The welding component 520 has a welding part 521 that can move in the horizontal and vertical directions, and the welding part 521 is used to weld the two ends of the composite pipe respectively.

[0089] Specifically, the welding device 5 straddles both ends of the transfer track 3120. It includes two welding assemblies 520 that are movably arranged on the welding device 5 in a direction perpendicular to the transfer track 3120. The welding assembly 520 specifically includes a welding slide 5210, a first welding lead screw slider mechanism 5211, a second welding lead screw slider mechanism 5212, a welding gun, a shielding gas delivery pipe, and an electrode; the welding part includes the welding gun, the shielding gas delivery pipe, and the electrode; among them, the welding slide 5210 is in direct contact with the welding bracket 510 and is slidably arranged on the welding bracket 510. Components such as the first welding lead screw slider mechanism 5211 are fixedly connected to the welding slide 5210 and move with the movement of the welding slide 5210. The first welding lead screw slider mechanism 5211 is vertically connected below the welding slide 5210, and the second welding lead screw slider mechanism 5212 is fixedly connected to the slider of the first welding lead screw slider mechanism 5211. The first welding lead screw slider mechanism 5211 is used to adjust the vertical coordinates of the second welding lead screw slider mechanism 5212, the welding gun, the shielding gas delivery pipe, and the electrode. The welding gun, the shielding gas delivery pipe, and the electrode are all fixedly connected to the slider of the second welding lead screw slider mechanism 5212, and the second welding lead screw slider mechanism 5212 is used to adjust the horizontal coordinates of the welding gun, the shielding gas delivery pipe, and the electrode.

[0090] During specific implementation: First, according to the position and welding requirements of the bimetallic composite pipe, adjust the position of the welding slide 5210 on the welding bracket 510, and then precisely adjust the position of the welding gun in the vertical and horizontal directions through the first welding lead screw slider mechanism 5211 and the second welding lead screw slider mechanism 5212, so that the welding gun accurately aligns with the welding area at the end of the bimetallic composite pipe. At the same time, the protective gas delivery pipeline starts to deliver the protective gas to form a protective gas in the welding area. Then, start the welding gun, and the welding gun generates a high-temperature arc to melt the end of the bimetallic composite pipe and the welding rod. The melted metal fuses together under the action of the arc to form a weld seam. During the welding process, the welding guns in the welding assemblies 520 located at both ends of the composite pipe move along a circular trajectory at the end of the bimetallic composite pipe according to the control of the operator, so as to achieve continuous welding of the entire end. The protective gas continues to be delivered to protect the welding area from external air interference. When the welding gun completes the circular welding of the end of the bimetallic composite pipe, stop the welding operation. At this time, the welded bimetallic composite pipe can be subjected to subsequent heat rolling processes and other treatments. The welding slide 5210 realizes precise movement on the welding bracket 510 through the lead screw device, can accurately position the welding assembly 520, and through the cooperation of the first welding lead screw slider mechanism 5211 and the second welding lead screw slider mechanism 5212, ensures that the welding point can accurately fall on the predetermined position at the end of the bimetallic composite pipe. The high precision of the lead screw drive enables the welding gun to ensure a stable trajectory and speed during circular welding, thereby forming a uniform and high-quality weld seam and improving the welding precision and product quality.

[0091] It should be noted that the structure for realizing the horizontal and vertical movement of the welding part 521 can be the cooperative structure of the above-mentioned first welding lead screw slider mechanism 5211 and the second welding lead screw slider mechanism 5212, or a driving mechanism composed of two sets of servo motors, reducers, ball screws and guide rails that respectively control the horizontal and vertical movement of the welding part 521. Specifically, the servo motor drives the ball screw to rotate through the reducer, thereby driving the welding part 521 installed on the slider to move horizontally along the linear guide rail; similar to the horizontal movement structure, the second set of driving mechanisms is installed on the slider of the horizontal movement shaft, and by controlling the forward and reverse rotation of the servo motor, the lifting movement of the welding part 521 in the vertical direction is realized.

[0092] As a possible implementation method, such as Figure 1 and Figure 9As shown in the figure, the composite pipe blanking device further includes two conveying devices 6, which are respectively located between the first grinding device 1 and the transmission track 3120, and between the second grinding device 2 and the transmission track 3120. The conveying device 6 includes a conveying frame 610, a plurality of V-shaped pulleys 620, and a conveying motor 630. Among them, the plurality of V-shaped pulleys 620 are arranged at intervals on the conveying frame 610, and the V-shaped pulleys 620 are used to convey the first pipe or the second pipe. The conveying motor 630 is fixedly arranged on the conveying frame 610, and the driving end of the conveying motor 630 is in transmission connection with the plurality of V-shaped pulleys 620 for driving the V-shaped pulleys 620 to rotate.

[0093] During specific implementation, the first pipe and the second pipe that have been ground on the first grinding device 1 and the second grinding device 2 are transported onto the plurality of V-shaped pulleys 620 of the conveying frame 610. The V-shaped pulleys 620 can stably fit the circular outer contours of the first pipe and the second pipe, and due to the spaced arrangement of the plurality of V-shaped pulleys 620, uniform and stable support can be provided for the first pipe and the second pipe. After the first pipe and the second pipe are placed, the conveying motor 630 fixedly arranged on the conveying frame 610 is started. The driving end of the conveying motor 630 transmits power to the plurality of V-shaped pulleys 620, causing them to start rotating. As the V-shaped pulleys 620 rotate, the pipes start to move along the direction of the conveying frame 610. The continuous rotation of the plurality of V-shaped pulleys 620 ensures the continuous transportation of the first pipe and the second pipe, and transports the first pipe or the second pipe from one end close to the first grinding device 1 or the second grinding device 2 to the transmission track 3120. The rolling transportation of the V-shaped pulleys 620 enables the first pipe and the second pipe to move uniformly and smoothly.

[0094] In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0095] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A composite tube assembly equipment, characterized in that: include: a first polishing device, the first polishing device being used to polish the inner wall of the first tube and transport the first tube; a second polishing device, the second polishing device being used to polish the outer wall of the second tube and transport the second tube; A transmission device, the transmission device is located between the first grinding device and the second grinding device, the transmission device comprises a transmission frame and two transmission tracks parallel to each other, the transmission tracks are movably arranged on the transmission frame, the two transmission tracks are used to respectively carry the first tube and the second tube and drive the first tube and the second tube to move, and the moving directions of the two transmission tracks are perpendicular to the axial directions of the first tube and the second tube; A blank assembling device, the blank assembling device having two ends respectively located on opposite sides of the two transmission tracks, the blank assembling device being provided with a pushing component, the pushing component being used to push the first tube and the second tube respectively located on the two transmission tracks along the axial direction of the first tube and the second tube, so that the first tube and the second tube are nested to form a composite tube blank; The first grinding device comprises: First, polish the bracket; Two first support rollers arranged side by side, one of the first support rollers is rotatably disposed on the first grinding bracket, and the other first support roller is fixedly disposed on the first grinding bracket, the axis of the rotatably disposed first support roller is inclined relative to a horizontal plane, and the two first support rollers are used to place the first tube and move the first tube to the transmission track adjacent to the first support rollers; a first driving motor, wherein a driving end of the first driving motor is connected to the first supporting roller and is used for driving the first supporting roller to rotate; A clamping assembly, the clamping assembly is fixedly connected to the first grinding bracket, the clamping assembly has a clamping end located above the first supporting roller and movable along the direction of the first supporting roller, and the clamping end is used to fix the relative position of the first tube and the first grinding bracket; A first grinding table, wherein the first grinding table is movably disposed on the first grinding bracket in a direction close to or away from the first supporting roller; A first grinding motor, wherein the first grinding motor is fixedly mounted on the first grinding table; A first grinding component is fixedly arranged at a driving end of the first grinding motor and is used for grinding the inner wall of the first tube.

2. The composite tube assembly equipment according to claim 1, characterized in that: The transmission device includes two transmission units, each of which includes a transmission frame and a transmission track, and the two transmission units are arranged relatively parallel and located between the first grinding device and the second grinding device.

3. The composite tube assembly equipment according to claim 2, characterized in that: The transmission unit also includes: a first screw slider mechanism, the first screw slider mechanism being fixedly disposed on the transmission frame, the first screw slider mechanism comprising a screw and a first slider movable along the screw, the moving direction of the first slider being perpendicular to the axial direction of the first tube and the second tube; A lifting component, one end of which is fixedly disposed on the first sliding block, and the other end of which is fixedly connected to the transmission track; A support platform, wherein the support platform is fixedly disposed on the transmission frame, and the support platform is located above the transmission track, and is used to receive the first tube and the second tube respectively from the first grinding device and the second grinding device.

4. The composite tube assembly equipment according to claim 1, characterized in that: The transmission track is provided with a plurality of groups of limiting grooves, which are arranged along an axial direction perpendicular to the first tube and the second tube, and the limiting grooves are used to accommodate and limit the first tube and the second tube.

5. The composite tube assembly equipment according to claim 1, characterized in that: The blank assembly device comprises: An assembly support, the two ends of which are respectively located on opposite sides of the two transmission tracks; Two second screw slider mechanisms, the two second screw slider mechanisms are arranged in parallel on the blank assembly support, the two second screw slider mechanisms include two second sliders, the moving direction of the two second sliders is perpendicular to the moving direction of the transmission track, the second slider has a pushing end, and the pushing end is used to push the first tube and the second tube respectively located on the two transmission tracks, so that the first tube and the second tube are nested to form the composite tube blank.

6. The composite tube assembly equipment according to claim 1, characterized in that: The clamping assembly comprises: A pressing platform, the pressing platform is fixedly arranged on one side of the first polishing bracket; A pressing motor, the pressing motor is fixedly arranged on the pressing platform; A pulley is fixed on the driving end of the pressing motor, and the pressing motor is used to press the pulley down until it contacts the first tube.

7. The composite tube assembly equipment according to claim 1, characterized in that: The second grinding device comprises: Second grinding bracket; Two second support rollers, one of which is rotatably disposed on the second polishing bracket, and the other of which is fixedly disposed on the second polishing bracket, the axis of the rotatably disposed second support roller being inclined relative to a horizontal plane, and the two second support rollers are used to place the second tube and move the second tube to the transmission track adjacent to the second support rollers; a second driving motor, wherein a driving end of the second driving motor is connected to the second supporting roller and is used for driving the second supporting roller to rotate; a second grinding table, the second grinding table being movably disposed on the second grinding bracket in a direction approaching or moving away from the second supporting roller; A second grinding motor, wherein the second grinding motor is fixedly mounted on the second grinding table; A second grinding component, wherein the second grinding component is fixedly connected to the driving end of the second grinding motor and is used for grinding the outer wall of the second tube.

8. The composite tube assembly equipment according to claim 1, characterized in that: The composite tube assembly equipment also includes a welding device, the two ends of which are respectively located on opposite sides of the transmission device, the welding device includes a welding bracket and two oppositely arranged welding components, the welding components are movably arranged on the welding bracket in a direction perpendicular to the transmission track, the welding components have a welding portion that can be moved in the horizontal and vertical directions, and the welding portion is used to weld the two ends of the composite tube blank respectively.

9. The composite tube assembly equipment according to claim 1, characterized in that: The composite tube assembly equipment further includes two conveying devices, which are respectively located between the first grinding device and an adjacent one of the transmission tracks and between the second grinding device and another adjacent one of the transmission tracks, and the conveying devices include: Conveyor rack; A plurality of V-shaped pulleys, the plurality of V-shaped pulleys are arranged at intervals on the conveying frame, and the V-shaped pulleys are used to transport the first tube or the second tube; A conveying motor is fixedly mounted on the conveying frame, and a driving end of the conveying motor is drivingly connected to the V-type pulley for driving the V-type pulley to rotate.

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