Feeding device suitable for pipes of multiple specifications

Abstract

The utility model discloses a feeding device suitable for multi-specification pipe materials, which comprises a fixing frame, a material blocking induction assembly, a diameter detection assembly, a first conveying chain assembly and a second conveying chain assembly, and the material blocking induction assembly and the diameter detection assembly are both installed at a feeding starting end in a lifting mode. The material blocking induction assembly and the diameter detection assembly are correspondingly arranged up and down in the Z-axis direction, the conveying top face of the first conveying chain assembly and the conveying top face of the second conveying chain assembly have height difference in the Z-axis direction, check blocks are arranged on the second output assembly, and a clamping groove is formed between every two adjacent check blocks. The material blocking induction assembly is arranged to conduct material blocking induction on incoming materials and trigger the diameter detection assembly to press downwards to measure the material diameter, the first conveying chain assembly and the second conveying chain assembly are selected for conveying according to the material diameter, the clamping grooves between the check blocks can bear and limit the materials with small pipe diameters, and the situation that the materials with the small pipe diameters are prone to slipping and distortion when conveyed on the chains is avoided; the technical problem that the quality is unstable when pipes of different specifications are conveyed through chains is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying equipment, in particular to a feeding device suitable for pipe materials of multiple specifications. Background Art

[0002] The feeding process of pipe materials requires a specific feeding device. For example, Chinese patent number CN217050435U discloses a feeding device that can achieve a horizontal feeding effect. However, when used to transport pipe materials of different specifications, it has the following limitations:

[0003] When conveying small-diameter pipes, due to their poor rigidity and light weight, they are prone to slipping and twisting when transported on a chain. Large-diameter pipes, on the other hand, are rigid and heavy, making them less susceptible to slipping and twisting, and direct chain conveying has little impact on quality. This results in a lower yield rate for small-diameter pipes after conveying them through a feeding device, and the quality of pipes of varying specifications cannot be maintained consistently, which can adversely affect product quality. Therefore, there is an urgent need in the art for a feeding device suitable for pipes of multiple specifications. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a feeding device suitable for pipes of multiple specifications, aiming to solve the technical problem of unstable quality caused by chain conveying pipes of different specifications in the existing technology.

[0006] (2) Technical solution

[0007] The utility model provides a feeding device suitable for pipe materials of multiple specifications, including a fixed frame, a material stopping sensing component, a diameter detection component, a first conveying chain component for conveying large-diameter steel pipes, and a second conveying chain component for conveying small-diameter steel pipes. The material stopping sensing component and the diameter detection component are both feed starting ends that can be lifted and lowered on the fixed frame. The material stopping sensing component and the diameter detection component are correspondingly arranged up and down in the Z-axis direction. The relative height between the first conveying chain component and the second conveying chain component is adjustable, and there is always a height difference in the Z-axis direction between the conveying top surface of the first conveying chain component and the conveying top surface of the second conveying chain component. A block is provided on the output top surface of the second conveying chain component, and a slot is formed between adjacent blocks for clamping and limiting the movement of small-diameter materials.

[0008] Preferably, the material blocking sensing assembly includes a first telescopic cylinder, a material blocking base, a U-shaped baffle, a material blocking sensor and a sensing trigger plate. The first telescopic cylinder outputs along the Z-axis direction, the material blocking base and the output end of the first telescopic cylinder are fixedly connected, the U-shaped baffle is fixed on the material blocking base, the opening ends of the U-shaped baffle are connected to a rotating shaft, a torsion spring is sleeved on the rotating shaft, the sensing trigger plate is mounted on the rotating shaft in a tilting manner by the torsion spring, and the material blocking sensor is fixedly mounted in the middle of the U-shaped baffle and protrudes toward the direction of the sensing trigger plate.

[0009] Preferably, one end of the fixed frame is provided with a vertical plate for installing a diameter detection component, and the diameter detection component includes an inverted L-shaped plate fixedly installed on the outward side of the vertical plate, and a second telescopic cylinder is fixedly installed on the top of the inverted L-shaped plate, and the output end of the second telescopic cylinder passes through the top of the L-shaped plate and is downwardly connected to a measuring mounting plate for installing a measuring device, a Z-axis slide rail is provided on the side wall of the L-shaped plate, and a Z-axis slider used in conjunction with the Z-axis slide rail is provided on the side of the measuring mounting plate close to the L-shaped plate.

[0010] Preferably, a plurality of groups of limit assemblies are arranged in an array at the feeding end of the fixed frame, and the limit assembly includes a limit plate movable along the X-axis direction, a support platform with an X-axis slide rail on the top, a connecting member and a limit drive assembly, a first fixed plate is provided at one end of the connecting member, and the upper and lower surfaces of the first fixed plate are respectively connected to the fixed limit plate and the X-axis slider, a second fixed plate is provided at the other end of the connecting member, and the lower surface of the second fixed plate is provided with teeth, and the limit drive member includes a limit transmission gear engaged with the teeth, a limit transmission rod passing through the center of the limit transmission gear, and a limit motor for driving the limit transmission rod to rotate.

[0011] Preferably, the first conveyor chain assembly is provided with several groups on the fixed frame along the Y-axis direction, and the second conveyor chain assembly is provided with several groups on the fixed frame in a liftable manner along the Y-axis direction. The first conveyor chain assembly and the second conveyor chain assembly are arranged in an array at adjacent intervals.

[0012] Preferably, a first transmission rod is provided at one end of the first conveyor chain assembly, the first transmission rod being provided with a first transmission gear for driving the rotation of the first conveyor chain assembly. The fixed frame is provided with a first drive motor for driving the first conveyor chain assembly, the output end of the first drive motor being provided with a first toothed chain assembly connected to the first transmission rod. The fixed frame is provided with a floating frame for mounting the second conveyor chain assembly and a third telescopic cylinder for controlling the raising and lowering of the floating frame. The third telescopic cylinder is fixedly mounted on the fixed frame, and the output end of the third telescopic cylinder is connected to the bottom of the floating frame.

[0013] Preferably, the floating frame is provided with a second driving motor for driving the second conveying chain assembly to operate, a second transmission rod is provided at one end of the second conveying chain assembly, the second transmission rod is provided with a second transmission tooth chain group for driving the second conveying chain assembly to rotate, and a second tooth chain group connected to the second transmission rod is provided at the output end of the second driving motor.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a material-stopping sensing component to sense incoming materials and trigger the diameter detection component to press down to measure the material diameter. According to the material diameter, the first conveyor chain component or the second conveyor chain component is selected for transportation. For materials with small diameters, the slots between the blocks on the second conveyor chain component can limit their load, thereby preventing small diameter materials from slipping and twisting and deformation during transmission on the chain, thereby solving the technical problem of unstable quality caused by chain conveying pipes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3 This is a three-dimensional structural diagram of the middle material stopper sensing component of the present utility model.

[0020] Figure 4 This is a left view of the middle material stopper sensing assembly of the present invention.

[0021] Figure 5 It is the main view of the present utility model.

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0023] Figure 7 for Figure 5 Cross-sectional view at CC.

[0024] Figure 8 for Figure 5 Cross-sectional view at DD in the middle.

[0025] The markings of the components in the accompanying drawings are as follows:

[0026] 1. Fixed frame; 11. Vertical plate; 12. Floating frame; 13. Third telescopic cylinder; 2. Material stop sensor assembly; 21. First telescopic cylinder; 22. Material stop base; 23. U-shaped baffle; 24. Material stop sensor; 25. Sensor trigger plate; 26. Rotating shaft; 3. Diameter detection assembly; 31. Inverted L-shaped plate; 32. Second telescopic cylinder; 33. Measuring mounting plate; 34. Z-axis slide rail; 35. Z-axis slider; 4. First conveyor chain assembly; 41. First transmission rod; 42. First transmission gear; 4 3. First drive motor; 44. First tooth chain group; 5. Second conveyor chain assembly; 51. Second drive motor; 52. Second transmission rod; 53. Second transmission tooth chain group; 6. Stop block; 61. Slot; 7. Limit assembly; 71. Limit plate; 72. Support table; 73. X-axis slide rail; 74. X-axis slider; 75. Connector; 751. First fixed plate; 752. Second fixed plate; 753. Gear; 761. Limit transmission gear; 762. Limit transmission rod; 763. Limit motor. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. For the sake of clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. In other words, in some embodiments of the present application, these practical details are not essential. In addition, to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0028] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, in this application, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or ranking, nor are they used to limit this application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0031] See also Figure 1-8 , wherein the X-axis direction is the feeding direction, the utility model provides a feeding device suitable for pipe materials of multiple specifications, including a fixed frame 1, a material stopping sensing component 2, a diameter detection component 3, a first conveying chain component 4 for conveying large-diameter steel pipes, and a second conveying chain component 5 for conveying small-diameter steel pipes. The material stopping sensing component 2 and the diameter detection component 3 are both feed starting ends that can be lifted and mounted on the fixed frame 1, and the material stopping sensing component 2 and the diameter detection component 3 are correspondingly arranged up and down in the Z-axis direction. The relative height between the first conveying chain component 4 and the second conveying chain component 5 is adjustable, and there is always a height difference between the conveying top surface of the first conveying chain component 4 and the conveying top surface of the second conveying chain component 5 in the Z-axis direction. A stopper 6 is provided on the output top surface of the second conveying chain component, and a card groove 61 for clamping and limiting the movement of small-diameter materials is formed between adjacent stoppers 6.

[0032] In the non-working state, the material stop sensor component 2 and the diameter detection component 3 are kept in the raised state (please refer to Figure 2 ), at this time, the material-blocking sensing component 2 can limit the steel pipe on the first conveying chain component 4 or the second conveying chain component 5 from continuing to move along the feeding direction. When the steel pipe enters the conveying range of the feeding device from the feeding starting end of the fixed frame 1, the material-blocking sensing component 2 senses the incoming material and limits the movement of the steel pipe. Then the diameter detection component 3 presses down to detect the material diameter, and judges whether the incoming material is large-diameter material or small-diameter material according to the detected material diameter. For example, when the detected pipe diameter is less than or equal to 20mm, it is judged to be small-diameter material. When the detected pipe diameter is greater than 20mm, it is judged to be large-diameter material, and the first conveying chain component 4 or the second conveying chain component 5 is selected according to the detection result. The conveying chain assembly 5 is conveyed, and at the same time, the material stop sensing assembly 2 is lowered and the diameter detection assembly 3 is raised to avoid the movement of the incoming material. If the incoming material is a large-diameter material, the conveying top surface height of the first conveying chain assembly 4 is higher than the conveying top surface height of the second conveying chain assembly 5, so that the relatively raised conveying top surface of the first conveying chain assembly 4 contacts with the large-diameter material and transmits it normally; if the incoming material is a small-diameter material, the conveying top surface height of the second conveying chain assembly 5 is higher than the conveying top surface height of the first conveying chain assembly 4, so that the stopper 6 on the second conveying chain assembly 5 contacts with the small-diameter material, and the small-diameter material is carried in the card slot 61 during the movement to maintain stable transmission;

[0033] The utility model sets a material-stopping sensing component 2 to sense the incoming material and triggers the diameter detection component 3 to press down to measure the material diameter. The first conveying chain component 4 or the second conveying chain component 5 is selected for transportation according to the material diameter. For materials with small pipe diameters, the slots 61 between the blocks 6 on the second conveying chain component 5 can be used to limit the load, thereby preventing the small pipe diameter materials from slipping and twisting and deforming during transmission on the chain, thereby solving the technical problem of unstable quality caused by chain conveying pipes of different specifications.

[0034] like Figure 2-4 As shown, the material-blocking sensing assembly 2 in the embodiment of the present invention includes a first telescopic cylinder 21, a material-blocking base 22, a U-shaped baffle 23, a material-blocking sensor 24 and an induction trigger plate 25. The first telescopic cylinder 21 outputs along the Z-axis direction, the material-blocking base 22 and the output end of the first telescopic cylinder 21 are fixedly connected, the U-shaped baffle 23 is fixed on the material-blocking base 22, and the opening ends of the U-shaped baffle 23 are connected to a rotating shaft 26, and a torsion spring (not shown in the figure) is sleeved on the rotating shaft 26. The induction trigger plate 25 is mounted on the rotating shaft 26 in a tilting manner through the torsion spring, and the material-blocking sensor 24 is fixedly mounted in the middle of the U-shaped baffle 23 and protrudes toward the direction of the induction trigger plate 25. When the incoming material is conveyed along the X-axis direction, the first thing it contacts is the tilted induction trigger plate 25. As the incoming material continues to move, Continue to move forward, push the induction trigger plate 25 to swing along the rotating shaft 26 until it contacts the protruding material stopping sensor 24. At this time, the incoming material is blocked by the U-shaped baffle 23 and remains stationary. The material stopping sensor 24 transmits a signal to the diameter detection component 3. Since the diameter detection component 3 and the material stopping sensing component 2 are arranged correspondingly up and down, the diameter stopping component can be pressed down to perform diameter detection on the incoming material in front of the U-shaped baffle 23. After determining that the corresponding conveying chain component for transmitting the incoming material is completed, the first telescopic cylinder 21 drives the material stopping base 22 to move downward along the Z-axis direction, and then drives the U-shaped baffle 23 to move downward to avoid the position, so that the incoming material continues to move along the X-axis direction. As the contact area of ​​the induction trigger plate 25 with the incoming material gradually decreases, the induction trigger plate 25 can be automatically reset to its original tilted state under the drive of the torsion spring.

[0035] like Figure 2The second telescopic cylinder 32 is fixedly mounted on the top of the inverted L-shaped plate 31, and the output end of the second telescopic cylinder 32 passes through the top of the L-shaped plate and is downwardly connected to a measuring mounting plate 33 for mounting a measuring device (not shown in the figure). A Z-axis slide rail 34 is provided on the side wall of the L-shaped plate, and a Z-axis slider 35 is provided on the side of the measuring mounting plate 33 close to the L-shaped plate for cooperating with the Z-axis slide rail 34. When the material stopping sensor 24 in the material stopping sensing assembly 2 transmits a signal to the diameter detection assembly 3, the second telescopic cylinder 32 drives the measuring mounting plate 33 to move downward, and then drives the measuring device to move downward to a position convenient for measuring the diameter of the incoming material in front of the U-shaped baffle 23. By setting the Z-axis slide rail 34 and the Z-axis slider 35, the measuring mounting plate 33 is accurately guided when it moves downward, thereby avoiding inaccurate alignment affecting the accuracy of the measurement results.

[0036] like Figure 6-8 As shown, a plurality of groups of limit assemblies 7 are arranged in an array at the feeding end of the fixed frame 1 in the embodiment of the present invention. The limit assembly 7 includes a limit plate 71 movable along the X-axis direction, a support table 72 with an X-axis slide rail 73 on the top, a connecting member 75 and a limit drive assembly. One end of the connecting member 75 is provided with a first fixed plate 751, and the upper and lower surfaces of the first fixed plate 751 are respectively connected to the fixed limit plate 71 and the X-axis slide 74. The other end of the connecting member 75 is provided with a second fixed plate 752. A tooth 753 is provided on the lower surface of 752, and the limit drive component includes a limit transmission gear 761 meshing with the tooth 753, a limit transmission rod 762 passing through the center of the limit transmission gear 761, and a limit motor 763 for driving the limit transmission rod 762 to rotate. When the incoming material is transmitted to the feeding end through the conveyor chain assembly, it is blocked by the limit plate 71 to prevent it from falling. By setting the limit plate 71 to move along the X-axis direction, it can be used to control the overlapping length with the front material rack, thereby controlling the amount of material loaded and avoiding piling.

[0037] In the embodiment of the present invention, the first conveyor chain assembly 4 is provided with several groups on the fixed frame 1 along the Y-axis direction, and the second conveyor chain assembly 5 is provided with several groups on the fixed frame 1 in a liftable manner along the Y-axis direction. The first conveyor chain assembly 4 and the second conveyor chain assembly 5 are arranged in an array at adjacent intervals. By setting the first conveyor chain assembly 4 to be installed on the fixed frame 1 at a fixed height, the second conveyor chain assembly 5 can be adjusted in height. Under normal conditions, the top surface height of the second conveyor chain assembly 5 is lower than the top surface height of the first conveyor chain assembly 4. That is to say, when the incoming material enters the conveying range of the feeding device, the first thing it contacts is the first conveyor chain assembly. The conveying top surface of the chain assembly 4 is arranged so that when the diameter detection assembly 3 detects that the incoming material is large-diameter material, the second conveying chain assembly 5 remains stationary and the first conveying chain assembly 4 maintains normal conveying. When the incoming material is small-diameter material, the second conveying chain assembly 5 rises to lift the material on the first conveying chain assembly 4 upward and then transfer it for conveyance. Of course, in other embodiments, the first conveying chain assembly 4 can be installed in a liftable manner and the second conveying chain assembly 5 can be installed in a fixed manner. It can be configured according to the ratio of large and small materials in actual production conditions, thereby using fewer conveying chain assemblies to reduce the number of lifts and lowering times, saving transmission power consumption, and thus reducing transportation costs.

[0038] In the embodiment of the utility model, a first transmission rod 41 is provided at one end of the first conveying chain assembly 4, and a first transmission gear 42 is provided on the first transmission rod 41 for driving the chain of the first conveying chain assembly 4 to rotate. The fixed frame 1 is provided with a first driving motor 43 for driving the first conveying chain assembly 4 to operate, and the output end of the first driving motor 43 is provided with a first tooth chain group 44 connected to the first transmission rod 41. When the first driving motor 43 is working, the first tooth chain group 44 on its output end transmits the rotation of the motor to the first transmission rod 41. The rotation of the first transmission rod 41 drives the first transmission gear 42 to rotate, and then the chain of the first conveying chain assembly 4 rotates. In this embodiment, the first conveying chain assembly 4 is provided with multiple groups, and the first transmission teeth corresponding to each group of the first conveying chain assemblies 4 are connected in series through the first transmission rod 41, so that one first driving motor 43 can drive all the first conveying chain assemblies 4 to rotate synchronously, which is conducive to reducing the conveying cost.

[0039] The fixed frame 1 in the embodiment of the present utility model is provided with a floating frame 12 for installing the second conveyor chain assembly 5 and a third telescopic cylinder 13 for controlling the lifting and lowering of the floating frame 12. The third telescopic cylinder 13 is fixedly installed on the fixed frame 1, and the output end of the third telescopic cylinder 13 is connected to the bottom of the floating frame 12. The floating frame 12 is driven by the third telescopic cylinder 13 to move up and down along the Z-axis direction, thereby driving the second output chain assembly to move up and down, so that the output top surface height of the second output chain assembly changes accordingly.

[0040] The floating frame 12 in the embodiment of the present utility model is provided with a second driving motor 51 for driving the second conveying chain assembly 5 to operate, and a second transmission rod 52 is provided at one end of the second conveying chain assembly 5, and the second transmission rod 52 is provided with a second transmission tooth chain group 53 for driving the second conveying chain assembly 5 to rotate. The output end of the second driving motor 51 is provided with a second transmission gear (not shown in the figure) connected to the second transmission rod 52, and its working principle is similar to that of the above-mentioned first driving motor 43, and will not be repeated here.

[0041] The above description is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application fall within the scope of the technical solution of the present application.

Claims

1. A feeding device suitable for pipes of various specifications, characterized by: The invention comprises a fixed frame (1), a material-blocking sensing component (2), a diameter detection component (3), a first conveying chain component (4) for conveying large-diameter steel pipes, and a second conveying chain component (5) for conveying small-diameter steel pipes. The material-blocking sensing component (2) and the diameter detection component (3) are both liftably mounted on the fixed frame (1) at the starting end of the material feed. The material-blocking sensing component (2) and the diameter detection component (3) are arranged correspondingly up and down in the Z-axis direction. The relative height between the first conveying chain component (4) and the second conveying chain component (5) is adjustable, and there is always a height difference between the conveying top surface of the first conveying chain component (4) and the conveying top surface of the second conveying chain component (5) in the Z-axis direction. A stopper (6) is provided on the output top surface of the second conveying chain component (5), and a card slot (61) for clamping and limiting the movement of small-diameter materials is formed between adjacent stoppers (6).

2. A feeding device suitable for pipes of various specifications according to claim 1, characterized in that: The material-blocking induction assembly (2) comprises a first telescopic cylinder (21), a material-blocking base (22), a U-shaped baffle (23), a material-blocking sensor (24) and an induction trigger plate (25); the first telescopic cylinder (21) outputs along the Z-axis direction; the material-blocking base (22) and the output end of the first telescopic cylinder (21) are fixedly connected; the U-shaped baffle (23) is fixed on the material-blocking base (22); both opening ends of the U-shaped baffle (23) are connected to a rotating shaft (26); a torsion spring is sleeved on the rotating shaft (26); the induction trigger plate (25) is mounted on the rotating shaft (26) in a tilting manner through the torsion spring; the material-blocking sensor (24) is fixedly mounted in the middle of the U-shaped baffle (23) and protrudes toward the induction trigger plate (25).

3. A feeding device suitable for pipes of various specifications according to claim 1, characterized in that: One end of the fixed frame (1) is provided with a vertical plate (11) for mounting a diameter detection assembly (3), and the diameter detection assembly (3) comprises an inverted L-shaped plate (31) fixedly mounted on the outward side of the vertical plate (11), a second telescopic cylinder (32) fixedly mounted on the top of the inverted L-shaped plate (31), an output end of the second telescopic cylinder (32) passing through the top of the L-shaped plate and downwardly connected to a measuring installation plate (33) for mounting a measuring device, a Z-axis slide rail (34) is provided on the side wall of the L-shaped plate, and a Z-axis slider (35) used in conjunction with the Z-axis slide rail (34) is provided on the side of the measuring installation plate (33) close to the L-shaped plate.

4. A feeding device suitable for pipes of various specifications according to claim 1, characterized in that: A plurality of groups of limiting assemblies (7) are arranged in an array at the feeding end of the fixed frame (1), and the limiting assembly (7) includes a limiting plate (71) movable along the X-axis direction, a support platform (72) with an X-axis slide rail (73) on the top, a connecting member (75) and a limiting driving assembly, wherein one end of the connecting member (75) is provided with a first fixing plate (751), the upper and lower surfaces of the first fixing plate (751) are respectively connected to the fixed limiting plate (71) and the X-axis slide (74), the other end of the connecting member (75) is provided with a second fixing plate (752), the lower surface of the second fixing plate (752) is provided with teeth (753), and the limiting driving member includes a limiting transmission gear (761) meshed with the teeth (753), a limiting transmission rod (762) passing through the center of the limiting transmission gear (761), and a limiting motor (763) for driving the limiting transmission rod (762) to rotate.

5. The feeding device for pipes of various specifications according to claim 1, characterized in that: The first conveyor chain assembly (4) is provided with a plurality of groups on the fixed frame (1) along the Y-axis direction, and the second conveyor chain assembly (5) is provided with a plurality of groups on the fixed frame (1) in a liftable manner along the Y-axis direction. The first conveyor chain assembly (4) and the second conveyor chain assembly (5) are arranged in an array at adjacent intervals.

6. A feeding device suitable for pipes of various specifications according to claim 5, characterized in that: A first transmission rod (41) is provided at one end of the first conveying chain assembly (4), and a first transmission gear (42) is provided on the first transmission rod (41) for driving the first conveying chain assembly (4) to rotate. A first driving motor (43) is provided on the fixed frame (1) for driving the first conveying chain assembly (4) to operate, and a first tooth chain group (44) connected to the first transmission rod (41) is provided on the output end of the first driving motor (43).

7. The feeding device for pipes of various specifications according to claim 5, characterized in that: The fixed frame (1) is provided with a floating frame (12) for installing a second conveying chain assembly (5) and a third telescopic cylinder (13) for controlling the lifting of the floating frame (12); the third telescopic cylinder (13) is fixedly installed on the fixed frame (1), and the output end of the third telescopic cylinder (13) is connected to the bottom of the floating frame (12).

8. The feeding device for pipes of various specifications according to claim 7, characterized in that: The floating frame (12) is provided with a second driving motor (51) for driving the second conveying chain assembly (5) to operate; a second transmission rod (52) is provided at one end of the second conveying chain assembly (5); a second transmission tooth chain group (53) is provided on the second transmission rod (52) for driving the second conveying chain assembly (5) to rotate; and a second tooth chain group connected to the second transmission rod (52) is provided on the output end of the second driving motor (51).

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