Multi-station automatic assembling equipment for connecting pipes

The multi-station automatic assembly equipment has achieved fully automated assembly of connecting pipes, solving the problems of low efficiency and safety hazards of manual operation, improving production efficiency and reducing equipment space occupation.

CN223889398UActive Publication Date: 2026-02-10FOSHAN SHUNDE DISTRICT JIEYONG ELECTRIC IND
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202520425398.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-02-10
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

In the existing technology, the assembly process of the connecting pipe relies on manual operation, which leads to low production efficiency, high cost and safety hazards.

Method used

Design a multi-station automatic assembly equipment, including a fixed table, an assembly turntable, a pipe feeding device, a welding ring feeding device, a clamping device, and a semi-finished product unloading device, to realize automatic feeding, clamping, and unloading of inner pipes, welding rings, and outer pipes, without the need for manual intervention throughout the entire process.

Benefits of technology

The fully automated assembly of connecting pipes has been achieved, reducing labor costs, avoiding fatigue and injury, improving production efficiency, and reducing the space occupied by the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223889398U_ABST
    Figure CN223889398U_ABST
Patent Text Reader

Abstract

The utility model discloses multi-station automatic assembling equipment for connecting pipes, which belongs to the technical field of automatic production equipment and comprises a fixed table, an assembling turntable is positioned on the fixed table in a rotating manner; an inner pipe feeding station, an inner pipe pressing station, a welding ring feeding station, a welding ring pressing station, an outer pipe feeding station, an outer pipe pressing station and a semi-finished product discharging station are annularly arrayed at the positions, corresponding to the positioning and rotating positions of the assembling rotary disc, of the fixing table, and pipe feeding devices are arranged on the inner pipe feeding station and the outer pipe feeding station correspondingly. A welding ring feeding device is arranged on the welding ring feeding station, pressing devices are arranged on the inner pipe pressing station, the welding ring pressing station and the outer pipe pressing station respectively, and a semi-finished product discharging device is arranged on the semi-finished product discharging station. The equipment can realize whole-course automatic assembly of the connecting pipe, and is low in labor cost, high in production efficiency and small in overall size.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of automated production equipment technology, specifically a multi-station automatic assembly equipment for connecting pipes. Background Technology

[0002] Chinese utility model patent with patent number CN202022265661.0 discloses a seamless copper-iron suction tube, which includes an outer tube made of metal, an inner tube made of metal, and an annular solder.

[0003] During assembly, the aforementioned suction pipe requires manual placement of the solder inside the outer guide tube, followed by placing the inner guide tube on the outer guide tube, and then pressing the inner guide tube into the outer guide tube under the cylinder to complete the semi-finished suction pipe. Finally, the semi-finished suction pipes are collected and placed in a fixture to await welding.

[0004] The entire process, from placing and pressing the parts to unloading and collecting them, is done manually. This not only results in low production efficiency and high costs, but also easily leads to fatigue and injury due to manual operation. Therefore, further improvements are necessary. Utility Model Content

[0005] The present invention aims to provide a multi-station automatic assembly equipment for connecting pipes to overcome the shortcomings of the prior art.

[0006] A multi-station automatic assembly equipment for connecting pipes, designed for this purpose, includes a fixed platform with an assembly turntable positioned and rotatable on the platform. The fixed platform, corresponding to the positioning and rotation positions of the assembly turntable, has a circular array of stations: an inner pipe feeding station, an inner pipe clamping station, a welding ring feeding station, a welding ring clamping station, an outer pipe feeding station, an outer pipe clamping station, and a semi-finished product unloading station. The inner pipe feeding station and the outer pipe feeding station are each equipped with a pipe feeding device; the welding ring feeding station is equipped with a welding ring feeding device; the inner pipe clamping station, the welding ring clamping station, and the outer pipe clamping station are each equipped with a clamping device; and the semi-finished product unloading station is equipped with a semi-finished product unloading device.

[0007] The assembly turntable has a ring array of multiple assembly seats, which correspond to the inner tube loading station, the inner tube pressing station, the welding ring loading station, the welding ring pressing station, the outer tube loading station, the outer tube pressing station, and the semi-finished product unloading station when the assembly turntable is positioned and rotated.

[0008] The mounting base is provided with positioning mounting columns for positioning the inner tube, the welding ring, and the outer tube.

[0009] The assembly base extends outward toward the assembly turntable, and the inner tube pressing station, the welding ring pressing station, and the outer tube pressing station are respectively provided with support plates corresponding to the assembly base.

[0010] A support frame is provided at the center of the bottom of the assembly turntable. A rotary reducer is provided on the support frame, and a rotary driver is connected to the rotary reducer. The assembly turntable is supported on the fixed platform by the support frame and is positioned and rotated on the fixed platform by the cooperation of the rotary driver and the rotary reducer.

[0011] The pipe feeding device includes a pipe feeding bracket, a pipe feeding guide rail, a pipe feeding slider, a feeding driver, and a pipe clamp. The pipe feeding bracket is located outside the assembly turntable and is fixedly mounted on the fixed platform. The pipe feeding guide rail is laterally fixed on the pipe feeding bracket toward the assembly turntable. The feeding driver is drivenly connected to the pipe feeding slider, and the pipe clamp is mounted on the pipe feeding slider.

[0012] The welding ring feeding device includes a welding ring feeding bracket, a welding ring feeding guide rail, a welding ring feeding slider, a welding ring feeding driver, and a welding ring pushing rod. The welding ring feeding bracket is located outside the assembly turntable and is fixedly mounted on the fixed platform. The welding ring feeding guide rail is laterally fixed on the welding ring feeding bracket in the direction of the assembly turntable. The welding ring feeding driver is drivenly connected to the welding ring feeding slider. The welding ring pushing rod is mounted on the welding ring feeding slider.

[0013] The clamping device includes a clamping bracket and a clamping cylinder. The clamping bracket is located outside the assembly turntable and is fixedly mounted on the fixed platform. The clamping cylinder is longitudinally mounted on the clamping bracket, and its clamping end faces the bottom of the clamping bracket.

[0014] The semi-finished product unloading device includes a semi-finished product unloading bracket, a semi-finished product unloading guide rail, a semi-finished product unloading slider, an unloading driver, and a semi-finished product clamp. The semi-finished product unloading bracket is located outside the assembly turntable and is fixedly mounted on the fixed platform. The semi-finished product unloading guide rail is laterally fixed on the semi-finished product unloading bracket in the direction of the assembly turntable. The unloading driver is drivenly connected to the semi-finished product unloading slider, and the semi-finished product clamp is mounted on the semi-finished product unloading slider.

[0015] The inner tube feeding station is equipped with an inner tube vibratory feeder for automatic feeding of the inner tube, and the tube feeding device on the inner tube feeding station is connected to the discharge end of the inner tube vibratory feeder.

[0016] The welding ring feeding station is equipped with a welding ring vibratory feeder for automatic feeding of the welding ring, and the welding ring feeding device is connected to the discharge end of the welding ring vibratory feeder.

[0017] The outer tube feeding station is equipped with an outer tube vibratory feeder for automatic feeding of the outer tube, and the tube feeding device on the outer tube feeding station is connected to the discharge end of the outer tube vibratory feeder.

[0018] This utility model, through the improvement of the above structure, utilizes the pipe feeding device at the inner pipe feeding station to realize the automatic feeding of the inner pipe, the clamping device at the inner pipe clamping station to clamp the inner pipe after feeding, the welding ring feeding device at the welding ring feeding station to automatically feed the welding ring onto the inner pipe, the clamping device at the welding ring clamping station to clamp the welding ring after feeding, the outer pipe feeding station to automatically feed the outer pipe onto the inner pipe and the welding ring, the clamping device at the outer pipe clamping station to clamp the outer pipe after feeding, and finally the semi-finished product unloading station to automatically unload the semi-finished product after the inner pipe, welding ring and outer pipe are assembled.

[0019] The entire assembly process, including fitting, pressing, and unloading of connecting pipe components, is fully automated and requires no manual intervention. This not only effectively reduces labor costs and avoids fatigue and injury during manual operation, but also ensures high production efficiency due to the continuous assembly process with short intervals. Furthermore, the circular array of inner tube loading, inner tube pressing, welding ring loading, welding ring pressing, outer tube loading, outer tube pressing, and semi-finished product unloading stations around the assembly turntable effectively reduces the overall volume of the equipment, thereby minimizing space occupancy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0022] Figure 3 This is an exploded structural diagram of an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the assembly structure of the pipe feeding device.

[0024] Figure 5 This is a schematic diagram of the assembly structure of the welding ring feeding device.

[0025] Figure 6 This is a schematic diagram of the assembly structure of the clamping device.

[0026] Figure 7 This is a schematic diagram of the assembly structure of the semi-finished product feeding device. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See Figures 1-7 This multi-station automatic assembly equipment for connecting pipes includes a fixed platform 1, on which an assembly turntable 2 is positioned and rotated. The fixed platform 1 has a circular array of inner pipe feeding station, inner pipe clamping station, welding ring feeding station, welding ring clamping station, outer pipe feeding station, outer pipe clamping station, and semi-finished product unloading station corresponding to the positioning and rotation positions of the assembly turntable 2. Among them, the inner pipe feeding station and the outer pipe feeding station are respectively equipped with pipe feeding device A, the welding ring feeding station is equipped with welding ring feeding device B, the inner pipe clamping station, the welding ring clamping station, and the outer pipe clamping station are respectively equipped with clamping device C, and the semi-finished product unloading station is equipped with semi-finished product unloading device D.

[0030] In this embodiment, the pipe feeding device A at the inner pipe feeding station realizes the automatic feeding of the inner pipe, the clamping device C at the inner pipe clamping station clamps the inner pipe after feeding, the welding ring feeding device B at the welding ring feeding station automatically feeds the welding ring onto the inner pipe, the clamping device C at the welding ring clamping station clamps the welding ring after feeding, the outer pipe feeding station automatically feeds the outer pipe onto the inner pipe and the welding ring, the clamping device C at the outer pipe clamping station clamps the outer pipe after feeding, and finally the semi-finished product unloading station automatically unloads the semi-finished product after the inner pipe, welding ring and outer pipe are assembled.

[0031] In other words, the entire assembly process, including the placement, pressing, and unloading of connecting pipe fittings, is fully automated and requires no manual intervention. This effectively reduces labor costs and avoids issues such as fatigue and injury during manual operation. Furthermore, the entire assembly process is carried out in quick succession with short intervals, resulting in high production efficiency. Additionally, since the inner tube loading station, inner tube pressing station, welding ring loading station, welding ring pressing station, outer tube loading station, outer tube pressing station, and semi-finished product unloading station are arranged in a ring around the assembly turntable 2, the overall longitudinal and transverse volume of the equipment can be effectively reduced, thereby minimizing space occupancy.

[0032] The assembly turntable 2 has a ring array of multiple assembly seats 3. When the assembly turntable 2 is positioned and rotated, the multiple assembly seats 3 correspond to the inner tube loading station, the inner tube clamping station, the welding ring loading station, the welding ring clamping station, the outer tube loading station, the outer tube clamping station, and the semi-finished product unloading station.

[0033] The mounting base 3 is equipped with positioning mounting columns 4 for positioning the inner tube, welding ring, and outer tube.

[0034] In this embodiment, the inner tube, welding ring, and outer tube can be automatically fed onto the positioning assembly column 4. At the same time, the positioning function of the positioning assembly column 4 can effectively position the inner tube, welding ring, and outer tube, thereby avoiding displacement problems of the accessories during assembly and improving the assembly accuracy of the connecting pipe.

[0035] The assembly base 3 extends outward toward the assembly turntable 2, and the inner tube clamping station, the welding ring clamping station, and the outer tube clamping station are respectively provided with support plates 5 corresponding to the assembly base 3.

[0036] In this embodiment, the bottom of the assembly seat 3, which is rotated to the inner tube pressing station, the welding ring pressing station, and the outer tube pressing station, is supported by the support plate 5, thereby avoiding damage to the assembly seat 3 when the pressing device C is pressing down. In addition, since the assembly seat 3 extends to the outside of the assembly turntable 2, it can effectively utilize the space and reduce the interference problems between the stations during operation.

[0037] A support frame is provided at the bottom center of the assembly turntable 2. A rotary reducer is provided on the support frame, and a rotary driver 6 is connected to the rotary reducer. The assembly turntable 2 is supported on the fixed platform 1 by the support frame, and is positioned and rotated on the fixed platform 1 by the cooperation of the rotary driver 6 and the rotary reducer.

[0038] In this embodiment, the rotary driver 6 drives the assembly turntable 2 to rotate on the fixed platform 1 through a rotary reducer during operation. In addition, the rotary driver 6 is a servo motor, which can drive the assembly turntable 2 to rotate while also positioning it at a specified position. This allows multiple assembly seats 3 to correspond to the inner tube loading station, inner tube clamping station, welding ring loading station, welding ring clamping station, outer tube loading station, outer tube clamping station, and semi-finished product unloading station, and to perform the corresponding work.

[0039] The pipe feeding device A includes a pipe feeding bracket A1, a pipe feeding guide rail A2, a pipe feeding slider A3, a feeding driver, and a pipe clamp. The pipe feeding bracket A1 is located outside the assembly turntable 2 and is fixedly mounted on the fixed platform 1. The pipe feeding guide rail A2 is horizontally fixed on the pipe feeding bracket A1 in the direction of the assembly turntable 2. The feeding driver is drivenly connected to the pipe feeding slider A3, and the pipe clamp is mounted on the pipe feeding slider A3.

[0040] In this embodiment, the feeding driver is a driving cylinder, which drives the pipe feeding slider A3 to reciprocate on the pipe feeding guide rail A2 when it is working, so that the pipe clamps on the inner pipe feeding station and the outer pipe feeding station automatically feed the inner pipe and the outer pipe to the positioning assembly column 4 of the assembly base 3 respectively.

[0041] The welding ring feeding device B includes a welding ring feeding bracket B1, a welding ring feeding guide rail B2, a welding ring feeding slider B3, a welding ring feeding driver, and a welding ring pushing rod B4. The welding ring feeding bracket B1 is located outside the assembly turntable 2 and is fixedly mounted on the fixed platform 1. The welding ring feeding guide rail B2 is horizontally fixed on the welding ring feeding bracket B1 in the direction of the assembly turntable 2. The welding ring feeding driver is driven to connect with the welding ring feeding slider B3. The welding ring pushing rod B4 is mounted on the welding ring feeding slider B3.

[0042] In this embodiment, the welding ring feeding driver is a driving cylinder, which drives the welding ring feeding slider B3 to reciprocate on the welding ring feeding guide rail B2 during operation, so that the welding ring pushing rod B4 at the welding ring feeding station automatically feeds the welding ring onto the positioning assembly column 4 of the assembly seat 3.

[0043] The clamping device C includes a clamping bracket C1 and a clamping cylinder C2. The clamping bracket C1 is located outside the assembly turntable 2 and is fixedly mounted on the fixed platform 1. The clamping cylinder C2 is longitudinally mounted on the clamping bracket C1, and its clamping end faces the bottom of the clamping bracket C1.

[0044] In this embodiment, when the pressing cylinder C2 is working, its pressing end reciprocates on the pressing bracket C1, so that the inner tube pressing station, the welding ring pressing station, and the outer tube pressing station respectively press the inner tube onto the positioning assembly column 4, the welding ring onto the inner tube and the positioning assembly column 4, and the outer tube presses the inner tube, the welding ring, and the positioning assembly column 4, so as to complete the assembly of the semi-finished connecting pipe.

[0045] The semi-finished product unloading device D includes a semi-finished product unloading bracket D1, a semi-finished product unloading guide rail D2, a semi-finished product unloading slider D3, an unloading driver, and a semi-finished product clamp. The semi-finished product unloading bracket D1 is located outside the assembly turntable 2 and is fixedly mounted on the fixed platform 1. The semi-finished product unloading guide rail D2 is horizontally fixed on the semi-finished product unloading bracket D1 in the direction of the assembly turntable 2. The unloading driver is driven and connected to the semi-finished product unloading slider D3. The semi-finished product clamp is mounted on the semi-finished product unloading slider D3.

[0046] In this embodiment, the unloading driver is a drive cylinder, which drives the semi-finished product unloading slider D3 to reciprocate on the semi-finished product unloading guide rail D2 during operation, so that the semi-finished product fixture can automatically unload the semi-finished products after the inner tube, welding ring and outer tube are assembled.

[0047] An inner tube vibratory feeder for automatic inner tube feeding is installed at the inner tube feeding station. The tube feeding device A at the inner tube feeding station is connected to the discharge end of the inner tube vibratory feeder.

[0048] The welding ring feeding station is equipped with a welding ring vibratory feeder for automatic feeding of welding rings, and the welding ring feeding device B is connected to the discharge end of the welding ring vibratory feeder.

[0049] The outer tube feeding station is equipped with an outer tube vibratory feeder for automatic outer tube feeding. The tube feeding device A on the outer tube feeding station is connected to the discharge end of the outer tube vibratory feeder.

[0050] In this embodiment, the inner tube feeding station is provided with an inner tube conveyor belt receiving seat 7 corresponding to the inner tube vibratory feeder's conveyor belt. The inner tube vibratory feeder's conveyor belt is supported on the inner tube conveyor belt receiving seat 7 so that the inner tube can be conveyed to the pipe clamp at the inner tube feeding station and clamped by the pipe clamp.

[0051] The welding ring loading station is equipped with a welding ring conveyor belt support 8 for the conveyor belt of the welding ring vibratory feeder. The conveyor belt of the welding ring vibratory feeder is supported on the welding ring conveyor belt support 8 so that the welding ring can be conveyed to the welding ring push rod B4 at the welding ring loading station and pushed by the welding ring push rod B4.

[0052] The outer tube feeding station is equipped with an outer tube conveyor belt receiving seat 9 corresponding to the outer tube vibratory feeder's conveyor belt. The outer tube vibratory feeder's conveyor belt is supported on the outer tube conveyor belt receiving seat 9 so that the outer tube can be conveyed to the pipe clamp at the outer tube feeding station and clamped by the pipe clamp.

[0053] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A multi-station automatic assembly equipment for connecting pipes, comprising a fixed table (1), characterized in that: The fixed platform (1) is positioned and rotated on an assembly turntable (2). The fixed platform (1) is arranged in a ring with an inner tube feeding station, an inner tube pressing station, a welding ring feeding station, a welding ring pressing station, an outer tube feeding station, an outer tube pressing station, and a semi-finished product unloading station corresponding to the positioning and rotation position of the assembly turntable (2). The inner tube feeding station and the outer tube feeding station are respectively equipped with a tube feeding device (A), the welding ring feeding station is equipped with a welding ring feeding device (B), the inner tube pressing station, the welding ring pressing station, and the outer tube pressing station are respectively equipped with a pressing device (C), and the semi-finished product unloading station is equipped with a semi-finished product unloading device (D).

2. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The assembly turntable (2) has a ring array of multiple assembly seats (3). When the assembly turntable (2) is positioned and rotated, the multiple assembly seats (3) correspond to the inner tube loading station, the inner tube pressing station, the welding ring loading station, the welding ring pressing station, the outer tube loading station, the outer tube pressing station, and the semi-finished product unloading station.

3. The multi-station automatic assembly equipment for connecting pipes according to claim 2, characterized in that: The mounting base (3) is provided with a positioning mounting column (4) for positioning the inner tube, the welding ring and the outer tube.

4. The multi-station automatic assembly equipment for connecting pipes according to claim 2, characterized in that: The assembly base (3) extends outward toward the assembly turntable (2), and the inner tube pressing station, the welding ring pressing station, and the outer tube pressing station are respectively provided with a support plate (5) corresponding to the assembly base (3).

5. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The assembly turntable (2) is provided with a support frame at the bottom center. A rotary reducer is provided on the support frame, and a rotary driver (6) is connected through the rotary reducer. The assembly turntable (2) is supported on the fixed platform (1) by the support frame, and is positioned and rotated on the fixed platform (1) by the cooperation of the rotary driver (6) and the rotary reducer.

6. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The pipe feeding device (A) includes a pipe feeding bracket (A1), a pipe feeding guide rail (A2), a pipe feeding slider (A3), a feeding driver, and a pipe clamp. The pipe feeding bracket (A1) is located outside the assembly turntable (2) and is fixedly mounted on the fixed platform (1). The pipe feeding guide rail (A2) is horizontally fixed on the pipe feeding bracket (A1) in the direction of the assembly turntable (2). The feeding driver is drivenly connected to the pipe feeding slider (A3). The pipe clamp is mounted on the pipe feeding slider (A3).

7. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The welding ring feeding device (B) includes a welding ring feeding bracket (B1), a welding ring feeding guide rail (B2), a welding ring feeding slider (B3), a welding ring feeding driver, and a welding ring pushing rod (B4). The welding ring feeding bracket (B1) is located outside the assembly turntable (2) and is fixedly mounted on the fixed platform (1). The welding ring feeding guide rail (B2) is horizontally fixed on the welding ring feeding bracket (B1) in the direction of the assembly turntable (2). The welding ring feeding driver is drivenly connected to the welding ring feeding slider (B3). The welding ring pushing rod (B4) is mounted on the welding ring feeding slider (B3).

8. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The clamping device (C) includes a clamping bracket (C1) and a clamping cylinder (C2). The clamping bracket (C1) is located outside the assembly turntable (2) and is fixedly mounted on the fixed platform (1). The clamping cylinder (C2) is longitudinally mounted on the clamping bracket (C1) and its clamping end faces the bottom of the clamping bracket (C1).

9. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The semi-finished product unloading device (D) includes a semi-finished product unloading bracket (D1), a semi-finished product unloading guide rail (D2), a semi-finished product unloading slider (D3), an unloading driver, and a semi-finished product clamp. The semi-finished product unloading bracket (D1) is located outside the assembly turntable (2) and is fixedly mounted on the fixed platform (1). The semi-finished product unloading guide rail (D2) is horizontally fixed on the semi-finished product unloading bracket (D1) in the direction of the assembly turntable (2). The unloading driver is drivenly connected to the semi-finished product unloading slider (D3). The semi-finished product clamp is mounted on the semi-finished product unloading slider (D3).

10. The multi-station automatic assembly equipment for connecting pipes according to claim 1, characterized in that: The inner tube feeding station is equipped with an inner tube vibratory feeder for automatic feeding of the inner tube, and the tube feeding device (A) on the inner tube feeding station is connected to the discharge end of the inner tube vibratory feeder. The welding ring feeding station is equipped with a welding ring vibratory feeder for automatic feeding of the welding ring, and the welding ring feeding device (B) is connected to the discharge end of the welding ring vibratory feeder. The outer tube feeding station is equipped with an outer tube vibratory feeder for automatic feeding of the outer tube, and the tube feeding device (A) on the outer tube feeding station is connected to the discharge end of the outer tube vibratory feeder.

Citation Information

Patent Citations

  • Copper-iron combined seamless air suction pipe

    CN213560661U