Pipe feeding device

Abstract

The utility model discloses a pipe feeding device which comprises a feeding frame, the feeding frame is provided with a feeding assembly, a material distributing mechanism is further arranged on the front portion of the feeding frame in the feeding direction, the material distributing mechanism comprises a material distributing plate, a mechanical arm, a swing blocking piece, a clamping piece and a bearing piece, and the clamping piece and the bearing piece are connected with the mechanical arm. Through the arrangement of the material distributing mechanism, the problem that feeding is difficult due to the fact that non-standard pipes and special-shaped pipes are overlapped and are not prone to separation in the feeding process can be solved, the feeding and distributing requirements of various types of pipes can be met through adaptive adjustment of the feeding assembly and the material distributing mechanism, and the equipment universality is high. In addition, the feeding frame comprises the power feeding frame and the non-power feeding frames, the conveying driving assembly on one power feeding frame can drive the feeding assemblies of the power feeding frame and the multiple non-power feeding frames to execute the feeding action at the same time, the energy utilization rate can be effectively increased, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe feeding, in particular to a pipe feeding device. Background Art

[0002] Laser pipe cutting machines are more and more widely used in the enterprise production process, and the corresponding automatic pipe feeding devices for laser cutting machines are also more and more applied. For some non-standard pipes and special-shaped pipes, there are difficulties in the process of automatic feeding, and it is not easy to separate the pipes when the pipes overlap and squeeze each other.

[0003] Therefore, it is urgent to design a pipe feeding device to solve the problem of difficult feeding of non-standard pipes and special-shaped pipes. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pipe feeding device to solve the problem of difficult automatic feeding of existing non-standard pipes and special-shaped pipes, and the device is simple to operate, reliable in performance, and suitable for the feeding requirements of various pipes.

[0005] To achieve the above purpose, the utility model provides a pipe feeding device, including a feeding frame, a feeding component is arranged on the upper part of the feeding frame, and a material distributing mechanism is also arranged at the front part of the feeding frame along the feeding direction;

[0006] The feeding component includes a conveying chain, a plurality of stoppers are arranged on the conveying chain, a working station for placing pipes is surrounded between two adjacent stoppers and the conveying chain, and the size of the working station is adapted to the external size of the pipes;

[0007] The material distributing mechanism includes material distributing plates and robotic arms arranged on both sides of the feeding frame along the direction perpendicular to the feeding direction; along the feeding direction, a pipe receiving mechanism is arranged at the front end of the robotic arm, and the pipe receiving mechanism can receive the pipes on the working station; along the vertical direction, the lowest point of the contact between the pipe receiving mechanism and the pipe is higher than the highest point of the working station;

[0008] The material distributing plate can move relative to the feeding frame in the vertical direction to jack up the pipes in the working station; the pipe receiving mechanism can receive the pipes jacked up by the material distributing plate; the robotic arm can drive the pipe receiving mechanism and the pipes carried by the pipe receiving mechanism to move relative to the feeding frame along the feeding direction.

[0009] As a preferred embodiment of the present application, the pipe receiving mechanism includes a clamping member, a supporting member and a swinging stopper, along the feeding direction, the swinging stopper is arranged at the front end of the supporting member, and the clamping member is arranged behind the supporting member and can move relative to the supporting member along the feeding direction;

[0010] The swing stopper has a horizontal state and a vertical state, and the swing stopper can swing relative to the robotic arm to switch between the horizontal state and the vertical state;

[0011] Preferably, in the horizontal state, the height of the lowest point of the contact between the supporting member and the pipe is not lower than the height of the highest point of the swing stopper. In the vertical state, the height of the highest point of the swing stopper is higher than the height of the contact surface between the supporting member and the pipe; the height of the highest point of the clamping member is higher than the height of the lowest point of the contact between the supporting member and the pipe.

[0012] After the material distribution plate rises, the height of the lowest point of the contact between the material distribution plate and the pipe is higher than the height of the highest points of the clamping member and the swing stopper. After the material distribution plate descends, the highest point of the material distribution plate is lower than the height of the working station.

[0013] As a preferred embodiment of the present application, the loading rack includes a first mounting beam; a linear guide parallel to the loading direction is provided on one side of the first mounting beam, and the robotic arm is cooperatively connected with the linear guide and can move along the linear guide; the material distribution plate is provided at the front part of the other side of the first mounting beam, and the material distribution plate can move relative to the first mounting beam in the vertical direction.

[0014] As a preferred embodiment of the present application, the material distribution mechanism further includes a material distribution driving assembly, and the material distribution driving assembly includes a first driving device cooperatively connected with the material distribution plate, a second driving device cooperatively connected with the robotic arm, a third driving device cooperatively connected with the swing stopper, and a fourth driving device cooperatively connected with the clamping member.

[0015] As a preferred embodiment of the present application, the feeding assembly further includes a chain tensioning shaft and a conveying driving shaft; along the loading direction, the chain tensioning shaft and the conveying driving shaft are respectively arranged at both ends of the first mounting beam, the conveying chain is sleeved on the chain tensioning shaft and the conveying driving shaft and passes through the upper and lower sides of the first mounting beam, and the first mounting beam can support the conveying chain.

[0016] As a preferred embodiment of the present application, a stopper is provided on the side of the conveying chain away from the first mounting beam; the stopper is detachably connected to the conveying chain.

[0017] As a preferred embodiment of the present application, the material distribution plate has a U-shaped structure with an upward opening in the vertical direction, and the bottom of the U-shaped structure is a flat bottom. The opening width of the U-shaped structure in the feeding direction is adapted to the width of the working station.

[0018] As a preferred embodiment of the present application, the loading rack includes a powered loading rack and a non-powered loading rack; the powered loading rack is further provided with a conveying drive assembly, and the conveying drive assembly includes a conveying servo motor and a conveying speed reducer, and the conveying servo motor is in transmission cooperation with the conveying drive shaft on the powered loading rack through the conveying speed reducer.

[0019] As a preferred embodiment of the present application, at least one powered loading rack and at least one non-powered loading rack are provided; the powered loading rack and the non-powered loading rack are arranged in a direction perpendicular to the loading direction;

[0020] It further includes a transmission shaft, and the transmission shafts between two adjacent non-powered loading racks and between the transmission shaft of an adjacent non-powered loading rack and the transmission shaft of the powered loading rack are in transmission cooperation through the transmission shaft.

[0021] As a preferred embodiment of the present application, the feeding assembly further includes a material detection switch, and the material detection switch can detect whether there is a pipe in the station.

[0022] As a preferred embodiment of the present application, it further includes a positioning plate; in a direction perpendicular to the feeding direction, the positioning plate is arranged on the side of the powered loading rack or the non-powered loading rack closest to the cutting device and facing the cutting device.

[0023] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present application are as follows:

[0024] 1. In the above solution, by arranging stoppers on the conveying chain to separate the stations, it is possible to avoid the stacking of pipes on the conveying chain, which makes it difficult to separate the materials, and it is more convenient to perform the material separation action of the subsequent material separation mechanism; and with the setting method of the stoppers, the specifications and sizes of the material separation plate, the supporting members, etc. can be adjusted adaptively according to the specifications, shapes of the pipes, which greatly improves the adaptability of the feeding assembly to different specifications of pipes, non-standard pipes, and special-shaped pipes;

[0025] 2. In the above solution, the structures of the material separation plate, the robotic arm, and the swing stopper in the material separation mechanism are simple, and the cooperation actions between the structures / devices of the material separation mechanism are simple and efficient, with low usage cost and maintenance cost;

[0026] 3. In the above solution, it is possible to make the conveying drive assembly on a powered loading rack drive the feeding assemblies of the powered loading rack and multiple non-powered loading racks to perform the feeding action simultaneously, which can effectively improve the energy utilization rate and reduce the energy consumption;

[0027] 4. In the above solution, the positioning plate can achieve the end positioning of the pipe before feeding, which is more convenient for the positioning between the pipe to be cut and the cutting equipment during the feeding process, and is beneficial to improving the subsequent cutting processing efficiency;

[0028] 5. To sum up, through the settings of the above feeding assembly, material distribution mechanism, etc., the pipe feeding device in this application can solve the problem that it is difficult to separate the overlapping non-standard pipes and special-shaped pipes during the feeding process, and can adapt to the feeding and material distribution requirements of various types of pipes through the adaptive adjustment of the feeding assembly and the material distribution mechanism, with strong equipment versatility; at the same time, the pipe feeding equipment in this application is easy to operate, reliable in performance, low in use cost and maintenance cost, and can bring better economic benefits. Description of the Drawings

[0029] The 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:

[0030] Figure 1 is a schematic structural diagram of a pipe feeding device in an example;

[0031] Figure 2 is a schematic structural diagram of a power feeding rack in an example;

[0032] Figure 3 is a schematic structural diagram of a conveying drive assembly in an example.

[0033] List of Components and Reference Numerals:

[0034] 1 Non-power feeding rack;

[0035] 2 Power feeding rack, 201 Power support, 202 Photoelectric switch, 203 Chain tensioning shaft, 204 Sprocket guard, 205 Conveyor chain, 206 Robot arm, 207 Material distribution cylinder, 208 Material distribution plate, 209 Clamping cylinder, 210 Clamping piece, 211 Supporting piece, 212 Swing blocking piece, 213 Pneumatic actuator, 214 Robot arm drive reducer, 215 Robot arm drive shaft, 216 Robot arm drive servo motor, 217 Robot arm drive chain, 218 Drag chain, 219 Drag chain support, 220 Conveying servo motor, 221 Conveying reducer, 222 Conveying drive shaft, 223 Material presence detection switch;

[0036] 3 Transmission shaft;

[0037] 4 Positioning plate;

[0038] 5 Foot switch. Detailed Embodiments

[0039] To more clearly illustrate the overall concept of the present utility model, the following will be described in detail by way of examples in combination with the accompanying drawings of the specification.

[0040] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0041] In one example, referring to Figures 1-3 As shown, the pipe loading device in this example includes a power loading rack 2 and two non-power loading racks 1. The power loading rack 2 is disposed between the two non-power loading racks 1 perpendicular to the loading direction. The conveying drive shaft 222 of the non-power loading rack 1 is in transmission cooperation with the conveying drive shaft 222 of the power loading rack 2 through a transmission shaft 3. This setting method can effectively improve the energy utilization rate and reduce energy consumption. Along the direction perpendicular to the feeding direction, the positioning plate 4 is disposed on the side of the power loading rack 2 or the non-power loading rack 1 closest to the cutting device facing the cutting device, so as to realize the end positioning of the pipe before loading, which is more convenient for positioning between the pipe to be cut and the cutting device during the loading process, and is beneficial to improving the subsequent cutting processing efficiency.

[0042] Continuing to refer to Figure 2 As shown, the power loading rack 2 includes a power support 201. The bottom of the power support 201 is two front and rear bottom plates. Above the bottom plates are the first column and the second column perpendicular to the bottom plates. Above the first column and the second column is the aforementioned first mounting beam. Below the first mounting beam is a second mounting beam disposed parallel thereto. The two ends of the second mounting beam are respectively fixedly connected to the first column and the second column. Between the first mounting beam and the second mounting beam is a third column perpendicular thereto. Continuing to refer to Figure 2 And Figure 3 As shown, the front and rear ends of the first mounting beam are respectively the conveying drive shaft 222 and the chain tensioning shaft 203. The conveying chain 205 is engaged with the conveying drive shaft 222 and the chain tensioning shaft 203. The conveying chain 205 passes above and below the first mounting beam of the power support 201, and the first mounting beam of the power support 201 plays a supporting role for the conveying chain 205. The conveying drive shaft 222 is connected to the output end of the conveying speed reducer 221, the input end of the conveying speed reducer 221 is connected to the conveying servo motor 220, and the conveying speed reducer 221 is fixed on the side of the front end of the first mounting beam of the power support 201.

[0043] Continuing to refer to Figure 2As shown, as a preferred embodiment of this example, the stoppers on the conveying chain 205 are arranged at the same intervals, so that the conveying chain 205 is divided into many workstations with the same intervals, and the pipes are placed in the workstations of the conveying chain 205 during feeding. This setting method is suitable for large-scale cutting processing of pipes of the same specification. Of course, the stoppers can also be arranged in a non-uniform interval manner, and / or the setting method of the stoppers can be adjusted in real time according to actual needs to meet more different feeding requirements, and this application does not make specific limitations on this.

[0044] Continue to refer to Figure 2 As shown, behind the first mounting beam is the photoelectric switch 202, and the photoelectric switch 202 can detect the stoppers on the conveying chain 205. The sprocket guard 204 is fixed behind the first mounting beam of the power support 201. A linear guide rail is installed on the side of the first mounting beam. The linear guide rail is parallel to the first mounting beam. The robotic arm 206 is fixed on the linear guide rail, and the robotic arm 206 can move linearly in a direction parallel to the first mounting beam of the power support 201.

[0045] As a preferred embodiment of this example, the material distribution driving assembly includes a first driving device connected to the material distribution plate 208 in a cooperative manner, a second driving device connected to the robotic arm 206 in a cooperative manner, a third driving device connected to the swing stopper 212 in a cooperative manner, and a fourth driving device connected to the clamping member 210 in a cooperative manner. Refer to Figure 2 As shown, the first driving device is preferably a material distribution cylinder 207, the second driving device preferably includes a robotic arm driving reducer 214, a robotic arm driving shaft 215, a robotic arm driving servo motor 216, and a robotic arm driving chain 217. The third driving member is preferably a pneumatic actuator 213, and the fourth driving device is preferably a clamping cylinder 209.

[0046] Continue to refer to Figure 2As shown in the figure, the clamping cylinder 209 is installed on the front side of the front end of the robotic arm 206. At the top end of the cylinder rod of the clamping cylinder 209, a clamping member 210 is installed. The telescopic direction of the cylinder rod of the clamping cylinder 209 is parallel to the moving direction of the robotic arm 206. On the front end face of the robotic arm 206, a swing stop 212 and a pneumatic actuator 213 are installed. The rotating shaft of the pneumatic actuator 213 is parallel to the robotic arm 206, and the pneumatic actuator 213 rotates the swing stop 212. The rotation angle of the swing stop 212 is 90 degrees, and it can be switched between the horizontal state and the vertical state. Above the front end of the robotic arm 206, a supporting member 211 is installed. The upper surface of the supporting member 211 is higher than the upper surface of the block of the conveying chain 205. Preferably, the above-mentioned clamping member 210 uses a clamping plate, the swing stop 212 uses a swing baffle, and the supporting member 211 uses a nylon backing plate. The clamping plate and the swing baffle have simple structures, low processing costs, and low usage costs. Using a nylon backing plate can prevent the surface of the pipe from being damaged due to collision when the pipe contacts the supporting member 211. Of course, the clamping member 210, the swing stop 212, and the supporting member 211 can also be made of other materials and / or structures, and the present application does not make specific limitations in this regard. In the above solution, the structures of the clamping cylinder 209 and the pneumatic actuator 213 are simple, easy to set up, can make full use of the installation space on the robotic arm 206, and the actions are reliable.

[0047] Continue to refer to Figure 2 As shown in the figure, the bottom of the robotic arm 206 is connected to the robotic arm drive chain 217. The robotic arm drive chain 217 is connected to the robotic arm drive shaft 215. The robotic arm drive shaft 215 is connected to the output end of the robotic arm drive reduction gear 214. The robotic arm drive servo motor 216 is connected to the input end of the robotic arm drive reduction gear 214. The robotic arm drive reduction gear 214 is fixed on the first column of the power support 201. The drag chain support 219 is fixed on the second column and the third column of the power support 201; one end of the drag chain 218 is fixed on the drag chain support 219 and the other end is fixed on the bottom of the robotic arm 206. In the above solution, using a combination of a chain and a motor to drive the robotic arm 206 is beneficial to extending the moving stroke of the robotic arm 206, so that the robotic arm 206 can conveniently perform the conveying actions of different specifications / non-standard / special-shaped pipes.

[0048] Continue to refer to Figure 3As shown in the figure, the material distributing cylinder 207 is fixed to the first column of the power support 201, on the same side as the conveying speed reducer 221. The cylinder rod of the material distributing cylinder 207 moves telescopically in the vertical direction, and the material distributing plate 208 is fixed to the top end of the cylinder rod of the cylinder. The material distributing plate 208 is U-shaped. When the material distributing plate 208 rises to the topmost position, the contact surface between the bottom of the U-shaped structure and the pipe is higher than the uppermost end of the clamping member 210 / swing blocking member 212, so that the pipe can be lifted to a height higher than the entire pipe receiving mechanism, avoiding interference of the material distributing plate 208 with the action of the entire pipe receiving mechanism to receive the pipe along the feeding direction. When the material distributing plate 208 descends to the lowermost position, the highest point of the material distributing plate 208 is lower than the lowest point of the conveying chain 205. The material presence detection switch 223 is located between the material distributing plate 208 and the power support 201 and is fixed to the first mounting beam.

[0049] It should be noted here that the above is only the preferred embodiment of the present application. The first driving device, the second driving device, the third driving device, and the fourth driving device in the present application can also adopt other more different setting methods, and the present application does not make specific limitations on this.

[0050] In the actual application process, the pipe loading device in the present application can realize that before the automatic feeding action, pipes need to be placed on the conveying chain 205. Place a pipe on the last station of the conveying chain 205, step on the foot switch 5 with your foot, and the conveying servo motor 220 will drive the conveying chain 205 to move forward by the distance of one station. Then, a pipe can be placed on the last station of the conveying chain 205 again, and then step on the foot switch 5 with your foot, and the conveying servo motor 220 will drive the conveying chain 205 to move forward by the distance of one station; repeat the above steps in sequence until the conveying chain 205 is full of pipes. The standard for the conveying chain 205 to be full is that the first pipe placed on the conveying chain 205 moves forward to the rear of the material distributing plate 208 and cannot be sent directly above the material distributing plate 208. The state of the material distributing mechanism before automatic operation is: the material distributing cylinder 207 is in a contracted state, the material distributing plate 208 is in the lowermost position, the clamping cylinder 209 is in a contracted state, the clamping member 210 is located in front of the material distributing plate 208 and is not within the material pushing range of the material distributing plate 208, and the swing blocking member 212 is in a vertical state.

[0051] When loading starts, the conveying servo motor 220 will drive the conveying chain 205 to move forward a distance of one station. During this process, the material detection switch 223 detects whether there are pipes in the station of the conveying chain 205. If there are no pipes, the conveying chain 205 continues to move forward one station until it detects that there are pipes in the chain station. If the conveying chain 205 moves continuously for N (N here = the total number of stations on the chain, of course, the N value can also be adjusted according to actual needs) stations, and the material detection switch 223 has not detected the pipe, the system will issue a material shortage alarm prompt; when the material detection switch 223 detects the pipe, the system will issue a material shortage alarm prompt. After the switch 223 detects the pipe, the cylinder rod of the dividing cylinder 207 extends, driving the dividing plate 208 to move upward, and the dividing plate 208 lifts the pipe in the work station of the conveyor chain 205, so that the pipe is separated from the work station of the conveyor chain 205, and the bottom side busbar of the pipe is higher than the top end of the clamping part 210; the robot arm drives the servo motor 216 to drive the robot arm 206 to move backward, so that the nylon pad is located directly below the lifted pipe; then the cylinder rod of the dividing cylinder 207 is completely retracted, driving the dividing plate 208 to move downward, so that the previously lifted pipe falls onto the nylon pad. Then, the cylinder rod of the clamping cylinder 209 extends to drive the clamping piece 210 to move forward, so that the pipe is clamped by the clamping piece 210 and the swing stopper 212; then, the mechanical arm drives the servo motor 216 to drive the mechanical arm 206 to move forward, and the pipe is sent to the top of the roller of the laser pipe cutting machine, and the clamping cylinder 209 is deflated, and the clamping piece 210 no longer has a clamping force on the pipe; then, the roller of the laser pipe cutting machine rises to lift the pipe, so that the pipe is separated from the upper surface of the nylon pad; then, the air cylinder 209 is deflated to lift the pipe, so that the pipe is separated from the upper surface of the nylon pad; then, the air cylinder 209 is deflated to lift the pipe, and the pipe is lifted by the swing stopper 212; then, the air cylinder 209 is deflated to lift the pipe, and ... The pneumatic actuator 213 rotates the swing block 212 to make it horizontal, and the cylinder rod of the clamping cylinder 209 retracts to drive the clamping member 210 to move backward; then, the mechanical arm drives the servo motor 216 to drive the mechanical arm 206 to move backward until the clamping member 210 is in front of the material dividing plate 208 and is not within the material-lifting range of the material dividing plate 208, and then the pneumatic actuator 213 rotates the swing block 212 to make it vertical. At this point, a whole feeding cycle is completed.

[0052] Of course, the pipe feeding device in the present application can also cooperate with automatic material swinging equipment, etc. When there is a shortage of material on the conveying chain 205, the pipe to be cut can be placed on the conveying chain 205 through the automatic material swinging equipment.

[0053] In summary, through the settings of the above-mentioned feeding components, material distribution mechanisms, etc., the pipe loading device in the present application can solve the problem that it is difficult to load materials due to the overlap of non-standard pipes and special-shaped pipes during the loading process, and it is not easy to separate them. Moreover, through the adaptive adjustment of the feeding components and the material distribution mechanism, it can meet the feeding and material distribution requirements of various types of pipes, and the equipment has strong versatility. At the same time, the pipe loading equipment in the present application is easy to operate, reliable in performance, low in use cost and maintenance cost, and can bring better economic benefits.

[0054] The technical solution protected by the present utility model is not limited to the above embodiments. It should be noted that the combination of the technical solution of any one embodiment with the technical solutions of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail with general descriptions and specific embodiments above, based on the present utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all belong to the scope of protection required by the present utility model.

Claims

1. A pipe feeding device, comprising a feeding rack, characterized in that: A feeding assembly is arranged on the upper part of the loading rack, and a material dividing mechanism is arranged on the front part of the loading rack along the loading direction; The feeding assembly includes a conveying chain, the conveying chain is provided with a plurality of blocks, a station for placing pipes is surrounded between two adjacent blocks and the conveying chain, and the size of the station is adapted to the external size of the pipe; The material distribution mechanism includes a material distribution plate and a mechanical arm arranged on both sides of the material loading rack in a direction perpendicular to the material loading direction; along the material loading direction, a pipe receiving mechanism is arranged at the front end of the mechanical arm, and the pipe receiving mechanism can receive the pipe on the workstation; along the vertical direction, the lowest point where the pipe receiving mechanism contacts the pipe is higher than the highest point of the workstation; The dividing plate can move relative to the loading rack in the vertical direction to lift the pipes in the workstation; the pipe receiving mechanism can receive the pipes lifted by the dividing plate; the robotic arm can drive the pipe receiving mechanism and the pipes carried by the pipe receiving mechanism to move relative to the loading rack in the loading direction.

2. The pipe feeding device according to claim 1, characterized in that: The pipe receiving mechanism comprises a clamping member, a supporting member and a swinging stopper. Along the feeding direction, the swinging stopper is arranged at the front end of the supporting member, and the clamping member is arranged at the rear of the supporting member and can move relative to the supporting member along the feeding direction; The swing block has a horizontal state and a vertical state, and the swing block can swing relative to the mechanical arm to achieve switching between the horizontal state and the vertical state; After the dividing plate is raised, the lowest point of the dividing plate in contact with the pipe is higher than the highest point of the clamping member and the swing stopper. After the dividing plate is lowered, the highest point of the dividing plate is lower than the height of the work station.

3. The pipe feeding device according to claim 2, characterized in that: The loading rack includes a first mounting beam; a linear guide rail parallel to the loading direction is provided on one side of the first mounting beam, and the robotic arm is connected with the linear guide rail and can move along the linear guide rail; the front part of the other side of the first mounting beam is provided with the material dividing plate, and the material dividing plate can move relative to the first mounting beam in the vertical direction; The material dividing mechanism also includes a material dividing drive assembly, which includes a first drive device connected to the material dividing plate, a second drive device connected to the mechanical arm, a third drive device connected to the swing stopper, and a fourth drive device connected to the clamping member.

4. The pipe feeding device according to claim 3, characterized in that: The feeding assembly also includes a chain tensioning shaft and a conveying drive shaft; the chain tensioning shaft and the conveying drive shaft are respectively arranged at both ends of the first mounting beam along the feeding direction, and the conveying chain is sleeved on the chain tensioning shaft and the conveying drive shaft and passes through the upper and lower sides of the first mounting beam, and the first mounting beam can support the conveying chain.

5. The pipe feeding device according to claim 1, characterized in that: The stopper is detachably connected to the conveying chain, and / or the stopper can move relative to the conveying chain along the feeding direction.

6. The pipe feeding device according to claim 1, characterized in that: The dividing plate has a U-shaped structure opening upward in the vertical direction, and the bottom of the U-shaped structure is a flat bottom. The opening width of the U-shaped structure along the feeding direction is adapted to the width of the workstation.

7. The pipe feeding device according to claim 4, characterized in that: The loading rack includes a powered loading rack and a non-powered loading rack; the powered loading rack is provided with a conveying drive assembly, the conveying drive assembly includes a conveying servo motor and a conveying reducer, and the conveying servo motor is driven and matched with the conveying drive shaft on the powered loading rack through the conveying reducer.

8. The pipe feeding device according to claim 7, characterized in that: At least one of the power loading rack and the non-power loading rack is provided; the power loading rack and the non-power loading rack are arranged in a direction perpendicular to the loading direction; It also includes a transmission shaft, through which the conveying drive shafts of two adjacent non-powered loading racks and the conveying drive shafts of adjacent non-powered loading racks and the conveying drive shaft of the powered loading rack are driven and matched.

9. The pipe feeding device according to claim 8, characterized in that: The feeding assembly also includes a material presence monitoring switch, which can detect whether there is a pipe in the work station.

10. The pipe feeding device according to claim 9, characterized in that: It also includes a positioning plate; along a direction perpendicular to the feeding direction, the positioning plate is arranged on the side of the power loading rack closest to the cutting device or the non-power loading rack facing the cutting device.

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