Automatic feeding device for pipe cutting machine

Abstract

The present invention discloses an automatic feeding device for a pipe cutting machine, comprising: a feeding unit, used for pushing a whole bundle of steel pipe raw materials in multiple portions; a material dividing unit, used for distributing the pushed steel pipes individually; a discharging unit, used for carrying the steel pipes distributed by the material dividing unit, and discharging the distributed steel pipes in a single layer in parallel; a transfer mechanism, used for transferring the steel pipes discharged in the discharging unit, wherein the number of steel pipes transferred by the transfer mechanism is controllable; a feeding unit, used for conveying the transferred steel pipes to the cutting fixture in a pattern corresponding to the steel pipe arrangement and combination required by the cutting fixture, wherein the feeding unit also aligns the end faces of the steel pipes before conveying the steel pipes, wherein the feeding unit, the material dividing unit, the discharging unit, the transfer mechanism, and the feeding unit cooperate with each other to complete the automatic feeding of the steel pipes. The present invention can reduce the degree of manual participation when feeding the steel pipes, and can also improve the feeding efficiency of the steel pipes.

Description

Technical Field

[0001] The invention belongs to the field of steel pipe cutting, and relates to a feeding technology of a pipe cutting machine, and specifically relates to an automatic feeding device for a pipe cutting machine. Background Art

[0002] Steel pipe is a widely used basic product. It can be used for transporting objects, manufacturing mechanical equipment, and can also be used as various brackets, etc. When the steel pipe is used to make a certain product, it is necessary to cut the steel pipe to a fixed length. Steel pipe cutting is an important process in the production process. Usually, the steel pipe is cut mechanically by a pipe cutting machine.

[0003] In the past, steel pipes for pipe cutting machines were basically fed manually, with the steel pipes manually arranged and placed in the cutting fixture of the pipe cutting machine. Manual loading is labor-intensive, time-consuming, labor-intensive, and inefficient, which affects the processing rhythm.

[0004] With the advancement of technology, some feeding devices have gradually appeared on the market. However, these feeding devices generally have the defects of low feeding efficiency (usually only a few steel pipes can be fed at a time) and high manual participation (the steel pipes need to be arranged manually). In addition, the storage space of some feeding devices is relatively small, and frequent feeding is required, which also affects production efficiency. Summary of the invention

[0005] The object of the present invention is to provide an automatic feeding device for a pipe cutting machine, which can reduce the manual participation when feeding steel pipes, and at the same time can improve the feeding efficiency of steel pipes and thus improve the steel pipe cutting efficiency.

[0006] To this end, the present invention adopts the following technical solutions:

[0007] An automatic loading device for a pipe cutting machine comprises: a feeding unit for pushing a whole bundle of steel pipe raw materials in multiple portions; a dividing unit for dividing a plurality of steel pipes pushed by the feeding unit into single portions; a discharging unit for carrying the steel pipes distributed by the dividing unit and discharging the steel pipes distributed by the dividing unit in a single layer in parallel; a transfer mechanism for transferring the steel pipes arranged in the discharging unit for a corresponding number of times according to the number of steel pipe layers in the steel pipe arrangement and combination pattern required by the cutting fixture, wherein one layer is transferred each time, and the number of steel pipes transferred in each layer is controllable; and a feeding unit for conveying the steel pipes transferred by the transfer mechanism as a whole to the cutting fixture of the pipe cutting machine, wherein the feeding unit conveys the steel pipes along the length direction of the steel pipes, and the feeding unit is also used to align the end faces of the transferred steel pipes before conveying the steel pipes, wherein the feeding unit, the dividing unit, the discharging unit, the transfer mechanism, and the feeding unit cooperate with each other to complete the automatic loading of the steel pipes.

[0008] Furthermore, the feeding unit includes a loading platform and a pushing mechanism for pushing the steel pipe, wherein the bearing surface of the loading platform for bearing the steel pipe raw material is inclined, and the pushing mechanism can move up and down along the bearing surface, and the pushing mechanism pushes the steel pipe raw material multiple times from bottom to top.

[0009] Furthermore, the loading platform is composed of a plurality of loading brackets arranged in parallel and at intervals, the pushing mechanism includes a moving component and a pushing bracket driven by the moving component, the upper surface of the loading bracket is arranged at an angle, and each of the loading brackets is provided with a corresponding pushing mechanism, wherein the plurality of pushing mechanisms operate synchronously.

[0010] Furthermore, the material dividing unit includes a material receiving rack and a material dividing mechanism, the material dividing mechanism includes a chain conveying assembly for conveying the steel pipes on the material receiving rack upward, a group of material dividing plates, and a kicking plate, wherein each of the material dividing plates is provided with the kicking plate, and there is a steel pipe conveying space between the kicking plate on the previous material dividing plate and the rear material dividing plate, and the steel pipe conveying space becomes smaller during the conveying process of the chain conveying assembly so that the kicking plate can kick back excess steel pipes.

[0011] Furthermore, the chain conveyor assembly includes a plurality of chain conveyor sub-units arranged in parallel, each of the chain conveyor sub-units includes two chain transmission mechanisms arranged at intervals, the chain transmission mechanism includes a chain and a pair of sprockets, a group of the dividing plates is arranged between the two chains in each of the chain conveyor sub-units, and all the chain transmission mechanisms in the chain conveyor assembly operate synchronously.

[0012] Furthermore, the discharging unit and the feeding unit are respectively located on both sides of the discharging unit, and the discharging unit includes a bracket for receiving the steel pipes distributed by the discharging unit and a pressing mechanism for preventing the steel pipes from stacking on the bracket, wherein the bracket is swingable, and the bracket has an inclined discharging state and a horizontal material taking state for the transfer mechanism to take materials, and the pressing mechanism includes a pressing frame, and the pressing frame has a pressing position close to the bracket and a material taking position turned away from the pressing position for convenience of the transfer mechanism to take materials, and when the pressing frame is in the pressing position and the bracket is in the discharging state, the gap between the pressing frame and the bracket only allows the steel pipes to be arranged in a single layer.

[0013] Furthermore, the bracket receives the steel pipes distributed by the distributing unit in a discharging state, and one end of the bracket adjacent to the distributing unit is lower than the discharge port of the distributing unit, so that the steel pipes distributed by the distributing unit fall onto the bracket.

[0014] Furthermore, the transfer mechanism includes a frame, a mobile platform movably arranged on the frame, a servo drive component for driving the mobile platform to move, and a steel pipe grasping component movably arranged on the mobile platform up and down, wherein the steel pipe grasping component is an electromagnet.

[0015] Furthermore, the feeding unit includes a conveying roller, an alignment head baffle for aligning the end faces of both ends of the steel pipe, and a shaping component arranged on both sides of the conveying roller for shaping the steel pipes stacked on the conveying roller. The shaping component includes a plurality of vertical shafts arranged on both sides of the conveying roller and steel pipe shaping sleeves detachably connected to the vertical shafts. The steel pipes stacked on the conveying roller are kept consistent with the steel pipe arrangement and combination style required by the pipe cutting fixture through the steel pipe shaping sleeves. The conveying roller has a conveying station for conveying the steel pipe to the cutting fixture and an alignment station for aligning the end faces of the steel pipe. The conveying roller is driven by a station switching power component to switch between the conveying station and the alignment station. When the conveying roller is in the alignment station, the alignment head baffle is respectively located at both ends of the conveying roller.

[0016] Furthermore, two conveying rollers are arranged in parallel, two pairs of flush baffles are arranged correspondingly, and two groups of shaping components are arranged correspondingly.

[0017] The present invention has the following technical effects:

[0018] (1) The present invention is provided with a feeding unit, a dividing unit, a discharging unit, a transfer mechanism, and a feeding unit. The feeding unit, the dividing unit, the discharging unit, the transfer mechanism, and the feeding unit cooperate with each other to realize the mechanized, orderly and automatic loading of steel pipes. The only manual participation is to loosen the whole bundle of steel pipe raw materials hoisted into the feeding unit, remove the binding ropes, and supervise the equipment during the subsequent automatic loading process. The whole loading process has low labor intensity, low participation, and high automation. In addition, the present invention can load the whole bundle of steel pipe raw materials without frequent feeding, which makes the present invention have the advantage of high steel pipe loading efficiency.

[0019] (2) The present invention can meet the feeding requirements of the steel pipe arrangement and combination pattern required by the cutting fixture in the pipe cutting machine. When the feeding unit conveys the steel pipes to the cutting fixture, the stacking pattern of the steel pipes in the feeding unit corresponds to the arrangement and combination pattern of the steel pipes required by the cutting fixture. In this way, the cutting tool is utilized to the maximum extent, and the maximum number of pipes can be cut, thereby improving the pipe cutting efficiency of the pipe cutting machine.

[0020] (3) The present invention has a wide range of applications and can be applied to round steel pipes and flat oval steel pipes of various specifications, and can also realize automatic loading of extra-long pipes.

[0021] (4) Flat oval steel pipes are difficult to transport (cannot roll naturally) and may be placed in various postures. This problem will cause the cutting fixture that is fed into the pipe cutting machine to not clamp tightly, which can easily cause the cutting tool to break during pipe cutting and cause a safety accident.

[0022] The present invention overcomes this problem: in the present invention, the bracket in the discharge unit is designed to be lower than the discharge port of the distribution unit, so that the steel pipe distributed by the distribution unit falls on the bracket, and the bracket has an inclined discharge state. In this way, when the bracket is in the discharge state, the flat oval steel pipe distributed by the distribution unit will lie flat on the bracket with the flat part under the action of gravity no matter in what posture it falls, thereby completing the posture adjustment of the flat oval steel pipe on the bracket, so that the flat oval steel pipe on the bracket maintains a consistent posture, which provides reliable guarantee for the subsequent quantitative transfer and normal and stable cutting of the flat oval steel pipe.

[0023] (5) The present invention provides two conveyor rollers, which can switch back and forth between the conveying station and the alignment station. This ensures that when one conveyor roller conveys steel pipes to the pipe cutting machine, the other conveyor roller can be used by the transfer mechanism to stack steel pipes, thereby reducing the downtime of the pipe cutting machine waiting for loading, so that the pipe cutting efficiency can be further improved.

[0024] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of an automatic feeding device for a pipe cutting machine according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of an automatic feeding device for a pipe cutting machine according to an embodiment of the present invention in another direction;

[0028] Figure 3 Shows Figure 1 The main structure of the automatic feeding device;

[0029] Figure 4 Shows Figure 1 The top view structure of the automatic feeding device;

[0030] Figure 5 for Figure 3 A partial enlarged view of the middle material distribution unit;

[0031] Figure 6 It is a schematic diagram of the state when the bracket in the discharge unit is in the discharge state and the pressing rack is in the pressing position;

[0032] Figure 7 It is a schematic diagram of the state when the bracket in the discharging unit is in the material taking state and the pressing frame is in the material taking position;

[0033] Figure 8a The figure shows the layout of a flat oval steel pipe of a certain specification;

[0034] Figure 8b The layout of a round steel pipe of a certain specification is shown; and

[0035] Figure 8c Shows the layout of another specification of round steel pipes.

[0036] Description of Reference Numerals

[0037] 1. Feeding unit; 11. Loading platform;

[0038] 111. bearing surface; 112. material loading support;

[0039] 12. Pushing mechanism; 121. Moving assembly;

[0040] 1211. Mobile trolley; 1212. Rotating wheel;

[0041] 1213, auxiliary roller; 122, push material support;

[0042] 123. Pushing motor; 2. Material dividing unit;

[0043] 21. Material receiving rack; 22. Material dividing mechanism;

[0044] 221, chain conveyor assembly; 2211, chain;

[0045] 2212, sprocket; 222, dividing plate;

[0046] 223. Kick-off plate; 3. Discharging unit;

[0047] 31. Bracket; 32. Pressing mechanism;

[0048] 321, press frame; 3211, press plate;

[0049] 3212, connecting beam; 322, pressing cylinder;

[0050] 4. Transfer mechanism; 41. Frame;

[0051] 42. Mobile platform; 43. Servo drive components;

[0052] 44. Steel pipe grabbing components; 45. Steel pipe grabbing cylinder;

[0053] 46. ​​Beam; 5. Feeding unit;

[0054] 51. Conveyor roller; 52. End baffle;

[0055] 53. Molding components; 531. Vertical axis;

[0056] 532. Steel pipe shaping sleeve; 54. Station switching power component;

[0057] 55. Base. DETAILED DESCRIPTION

[0058] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0059] Combination Figures 1 to 7As shown, the automatic feeding device for the pipe cutting machine of the present invention comprises a feeding unit 1 for pushing a whole bundle of steel pipe raw materials in multiple portions, a dividing unit 2 for dividing a plurality of steel pipes pushed by the feeding unit 1 into single pieces, a discharging unit 3, a transfer mechanism 4 for transferring the steel pipes discharged in the discharging unit 3, and a feeding unit 5 for conveying the steel pipes to the cutting fixture of the pipe cutting machine. The discharging unit 3 is used to carry the steel pipes distributed by the dividing unit 2, and to discharge the steel pipes distributed by the dividing unit 2 in a single layer and in parallel.

[0060] The number of steel pipes transferred by the transfer mechanism 4 is controllable, so that the transfer mechanism 4 can perform corresponding quantitative steel pipe transfers at each steel pipe transfer according to the steel pipe arrangement and combination pattern required by the cutting fixture in the pipe cutting machine, and the transfer mechanism 4 performs a corresponding number of steel pipe transfers according to the number of steel pipe layers in the steel pipe arrangement and combination pattern required by the cutting fixture, so that the transfer mechanism 4 can transfer the steel pipes completely according to the number of steel pipe layers and the number of steel pipes in the steel pipe arrangement and combination pattern required by the cutting fixture before the feeding unit 5 feeds once.

[0061] The feeding unit 5 conveys the steel pipes transferred by the transfer mechanism 4 to the cutting fixture of the pipe cutting machine in a pattern corresponding to the steel pipe arrangement and combination required by the cutting fixture, wherein the feeding unit 5 conveys the steel pipes along the length direction of the steel pipes, and the feeding unit 5 also aligns the end faces of the transferred steel pipes before conveying the steel pipes.

[0062] The automatic loading device for the pipe cutting machine of the present invention also includes a control unit, which controls and coordinates the feeding unit 1, the dividing unit 2, the discharging unit 3, the transfer mechanism 4, and the feeding unit 5 to cooperate with each other to realize automatic loading of the steel pipe.

[0063] When the pipe cutting machine cuts steel pipes, steel pipes of different specifications have different placement patterns in the cutting fixture to maximize the effective use of the cutting tool and achieve the maximum number of pipes. The placement pattern of the steel pipes in the cutting fixture is the steel pipe arrangement and combination pattern required by the cutting fixture.

[0064] Combination Figures 1 to 7 As shown, the feeding unit 1 includes a loading platform 11 and a pushing mechanism 12 for pushing the steel pipe. The loading platform 11 has a bearing surface 111 for supporting the steel pipe raw material, which is tilted, and the pushing mechanism 12 can move up and down along the bearing surface 111. The pushing mechanism 12 includes a moving component 121 and a pushing bracket 122 driven by the moving component 121.

[0065] After the whole bundle of steel pipe raw materials is lifted into the feeding unit 1 by the lifting device, these steel pipe raw materials are stacked above the pushing bracket 122. The pushing bracket 122 stops these steel pipe raw materials and prevents them from sliding along the bearing surface 111. The pushing mechanism 12 pushes the steel pipe raw materials multiple times from bottom to top.

[0066] Combination Figures 1 to 7 As shown, the loading platform 11 is composed of a plurality of loading brackets 112 arranged in parallel and at intervals, the upper surfaces of the loading brackets 112 are arranged inclined, and each of the loading brackets 112 is provided with a corresponding pushing mechanism 12. The steel pipe raw materials are piled on the upper surfaces of the plurality of loading brackets 112 and are stopped by the pushing brackets 122, and the upper surfaces of the plurality of loading brackets 112 constitute the bearing surface 111.

[0067] The moving assembly 121 includes a moving trolley 1211 that can move up and down along the upper surface of the loading bracket 112, a rotating wheel 1212 rotatably connected to the loading bracket 112, a nylon rope wound around the rotating wheel 1212 and fixedly connected to the moving trolley 1211 for towing the moving trolley 1211, and an auxiliary roller 1213 rotatably arranged on the top of the loading bracket 112.

[0068] Among them, the auxiliary roller 1213 has a guide groove for guiding the movement of the nylon rope. The nylon rope passes through the auxiliary roller 1213 and is located in the guide groove. The moving cart 1211 moves up and down by changing the direction of the rotating wheel 1212. When the rotating wheel 1212 winds up the nylon rope, the moving cart 1211 moves upward and drives the pushing bracket 122 to move upward and then push the steel pipe.

[0069] All the wheels 1212 in the above-mentioned multiple pushing mechanisms 12 share a driving shaft, and the driving shaft is driven by a pushing motor 123, and the pushing motor 123 is a reduction motor. The coaxial design of all the wheels 1212 in the above-mentioned multiple pushing mechanisms 12 enables the multiple pushing mechanisms 12 to move synchronously, thereby providing a reliable guarantee for all the pushing brackets 122 to push the steel pipes in a consistent manner.

[0070] The pushing mechanism 12 also includes a travel switch for controlling the up and down movement of the moving cart 1211. When the moving cart 1211 moves up to trigger the upper travel switch, the pushing motor 123 changes direction, and the moving cart 1211 moves down under the action of gravity. When the moving cart 1211 moves down to trigger the lower travel switch, the pushing motor 123 changes direction again, causing the rotating wheel 1212 to reel in the nylon rope, thereby driving the moving cart 1211 to move up.

[0071] The upward movement process of the above-mentioned mobile trolley 1211 corresponds to the pushing process of the steel pipe. The mobile trolley immediately moves down when the upper travel switch is triggered, so that only a small part of the steel pipe will be pushed into the material distribution unit 2 during one upward movement process of the above-mentioned mobile trolley 1211.

[0072] The setting of the travel switch enables the pushing mechanism 12 to push only a small portion of the steel pipe into the material distribution unit 2 each time, and the steel pipe raw material can be pushed multiple times. The feeding unit 1 can load a whole bundle of materials (about several hundred pieces) at a time, and the multiple pushing method can avoid the situation where the whole bundle of materials is directly pushed into the material distribution unit 2 due to the stacking or crossing of the pipe materials, which causes low material distribution efficiency or even safety accidents.

[0073] The upper part of the loading bracket 112 is provided with a photoelectric detection switch for detecting whether there is still steel pipe raw material on the loading bracket 112 .

[0074] Combination Figures 1 to 7 As shown, the material distribution unit 2 includes an inclined receiving rack 21 connected to the discharge side of the feeding unit 1 and a material distribution mechanism 22 for distributing the steel pipes pushed by the feeding unit 1 on the receiving rack 21 individually.

[0075] The receiving rack 21 is composed of a plurality of sub-racks arranged at intervals, and a supporting plate is provided at the bottom of each sub-rack to prevent the steel pipe from falling.

[0076] Combination Figures 1 to 7 As shown, the material distribution mechanism 22 includes a chain conveying assembly 221 for conveying the steel pipes on the receiving rack 21 upward, a material distribution plate 222 for holding the steel pipes to achieve steel pipe distribution, and a kicking plate 223 welded to the middle of the material distribution plate 222 for kicking back excess steel pipes on the material distribution plate 222.

[0077] The chain conveyor assembly 221 includes a plurality of chain conveyor subunits arranged in parallel, each of which includes two chain transmission mechanisms arranged at intervals, the chain transmission mechanism including a chain 2211 and a pair of sprockets 2212, and a set of the material dividing plates 222 is straddled between the two chains 2211 in each of the chain conveyor subunits. In order to prevent the steel pipe from falling off the material dividing plates 222 during the upward conveying process, the chain transmission mechanism is arranged to be tilted upward.

[0078] The pair of sprockets 2212 is composed of a driving sprocket and a driven sprocket, wherein the driving sprocket is located obliquely above the driven sprocket, and all the driving sprockets in the chain conveyor assembly 221 share a sprocket drive shaft, which is driven by a sprocket motor, and the sprocket motor is a reduction motor. The coaxial design of the driving sprocket enables all the chain transmission mechanisms in the chain conveyor assembly 221 to move synchronously, providing a reliable guarantee for the stable delivery of steel pipes.

[0079] The group of dividing plates 222 are dispersedly arranged on the chain bodies of the corresponding two chains 2211, and the length direction of the dividing plates 222 is consistent with the length direction of the steel pipes to be distributed. The kicking plate 223 is welded on each of the dividing plates 222, and the kicking plate 223 is located between two adjacent dividing plates 222.

[0080] Each of the chain conveying sub-units is located between two adjacent sub-frames, and the chain body section of the chain 2211 adjacent to the material receiving frame 21 extends into the material receiving area of ​​the material receiving frame 21, which further prevents the steel pipes on the material receiving frame 21 from falling and can directly distribute the steel pipes on the material receiving frame 21.

[0081] like Figures 3 to 7 As shown, the end of the kick plate 223 away from the dividing plate 222 is inclined toward the inner side of the chain 2211 relative to the end connected to the dividing plate 222, and the end of the kick plate 223 away from the dividing plate 222 has a bevel and is in a sharp angle. There is a steel pipe conveying space (steel pipe storage space) between the kick plate 223 on the previous dividing plate 222 and the next dividing plate 222.

[0082] When the dividing plate 222 moves upward to the vicinity of the active sprocket on the upper side, due to the change in the motion trajectory of the chain 2211 (linear motion becomes circular motion), the steel pipe conveying space becomes smaller as the chain 2211 moves upward to the curved section (corresponding to the active sprocket) and is only enough to store one steel pipe. The kicking plate 223 installed on the previous dividing plate 222 will kick back the excess steel pipes on the subsequent dividing plate 222, thereby ensuring that at most one steel pipe is delivered each time (if multiple steel pipes are delivered at a time, these steel pipes may cross or stack, causing the transfer mechanism 4 to be unable to accurately take materials according to the set quantity), thereby facilitating subsequent material discharge and counting.

[0083] The pointed corner design of the kick plate 223 at one end away from the distribution plate 222 enables the kick plate 223 to adapt to the distribution of steel pipes of various specifications without the need for changing the shape, thus saving auxiliary man-hours for production changeover.

[0084] It should be noted that the attached Figure 5 Only a part of the dividing plates 222 is shown in the figure, but in fact the entire chain 2211 is covered with dividing plates 222.

[0085] Combination Figures 1 to 7 As shown, the discharging unit 3 and the feeding unit 1 are respectively located on both sides of the distributing unit 2 , and the discharging unit 3 includes a bracket 31 for receiving the steel pipes distributed by the distributing unit 2 and a pressing mechanism 32 for preventing the steel pipes from stacking on the bracket 31 .

[0086] The bracket 31 is driven by a bracket swing cylinder to swing, and the bracket 31 is composed of a plurality of sub-brackets, which share a swing shaft, and the swing shaft is rotatably arranged on the bracket seat. A stop plate is arranged at one end of each sub-bracket away from the material distribution unit 2.

[0087] like Figures 1 to 3 as well as Figure 6 , Figure 7 As shown, the bracket 31 has an inclined discharging state and a horizontal material taking state for the transfer mechanism 4 to take the material. When the bracket 31 is in the discharging state, the end of the bracket 31 adjacent to the material distributing unit 2 is higher than the end away from the material distributing unit 2. When the bracket 31 receives the steel pipes delivered by the material distributing unit 2, the bracket 31 is in the discharging state. The tilting of the bracket 31 can automatically arrange the delivered steel pipes closely on the bracket 31 by gravity.

[0088] The pressing mechanism 32 includes a pressing frame 321 and a pressing cylinder 322 for driving the pressing frame 321 to move, wherein the pressing frame 321 includes a plurality of spaced pressing plates 3211 and a connecting beam 3212 for connecting the plurality of pressing plates 3211 together, one end of the pressing plate 3211 is fixed in a hinged manner, and the front end of the piston rod of the pressing cylinder 322 is movably connected to the connecting beam 3212. Specifically, a connecting seat can be welded on the connecting beam 3212, and the front end of the piston rod of the pressing cylinder 322 is hingedly connected to the connecting seat.

[0089] Combination Figures 1 to 3 as well as Figure 6 , Figure 7 As shown, when the piston rod in the above-mentioned pressing cylinder 322 is extended and retracted, the pressing plate 3211 is driven to rotate through the connecting beam 3212, so that the pressing frame 321 has a pressing position close to the bracket 31 and a material taking position away from the pressing position to facilitate the transfer mechanism 4 to take the material. Figure 6 As shown, the pressing frame 321 is in the material taking position. Figure 3 and Figure 7 shown.

[0090] When the bracket 31 receives the steel pipe delivered by the material distribution unit 2, the material pressing frame 321 is pressed down to be in the material pressing position.

[0091] When the pressing rack 321 is in the pressing position and the bracket 31 is in the discharging state, the gap between the pressing plate 3211 in the pressing rack 321 and the bracket 31 is only enough for a single steel pipe to pass through in sequence, thereby allowing the steel pipes to be arranged in a single layer.

[0092] The arrangement of the pressing mechanism 32 ensures that the steel pipes are discharged in a single layer on the bracket 31, thereby providing a reliable guarantee for the accurate counting of the steel pipes and the subsequent quantitative transfer of the steel pipes.

[0093] The bracket 31 is provided with a counting detection switch for counting the steel pipes.

[0094] Combination Figures 1 to 7 As shown, one end of the bracket 31 adjacent to the material distribution unit 2 is lower than the discharge port of the material distribution unit 2 (specifically, the end of the bracket 31 adjacent to the material distribution unit 2 can be designed to be lower than the rotation center of the driving sprocket). This design allows the steel pipes distributed by the material distribution unit 2 to have a falling process and fall onto the bracket 31 in a falling manner.

[0095] Flat oval steel pipes are difficult to transport (cannot roll naturally) and may be placed in various postures. This problem will cause the cutting fixture that is fed into the pipe cutting machine to not clamp tightly, which can easily cause the cutting tool to break during pipe cutting and cause a safety accident.

[0096] To this end, in the present invention, the bracket 31 is designed to be lower than the discharge port of the distributing unit 2, so that the steel pipes distributed by the distributing unit 2 fall onto the bracket 31 in a falling manner. In addition, the bracket 31 has an inclined discharging state. In this way, when the bracket 31 is in the discharging state, the flat oval steel pipes distributed by the distributing unit 2 will lie flat on the bracket 31 with their flat parts under the action of gravity no matter how they fall, thereby completing the posture adjustment of the flat oval steel pipes on the bracket 31, so that the flat oval steel pipes on the bracket 31 maintain a consistent posture, which provides reliable guarantee for the subsequent quantitative transfer and normal and stable cutting of the flat oval steel pipes.

[0097] In case a flat oval steel pipe falls onto the bracket 31 not with the flat part lying flat but with the arc section in contact with the bracket 31, the flat oval steel pipe in this posture will be transformed into a posture with the flat part lying flat due to the collision of the pressing plate 3211 during the sliding process.

[0098] When the pressing rack 321 is in the pressing position and the bracket 31 is in the discharging state, the gap between the pressing plate 3211 and the bracket 31 satisfies the single-layer discharge of Φ13, Φ16, Φ18, Φ19, Φ22 round tubes and 22×16, 22×11 flat oval steel tubes.

[0099] Combination Figures 1 to 7 As shown, the transfer mechanism 4 includes a frame 41, a mobile platform 42 movably disposed on the frame 41, a servo drive component 43 for driving the mobile platform 42 to move, and a steel pipe grabbing component 44 movably disposed on the mobile platform 42. The steel pipe grabbing component 44 is an electromagnet for facilitating the picking and placing of steel pipes, and a plurality of the steel pipe grabbing components 44 are provided and dispersedly arranged.

[0100] Among them, the mobile platform 42 can slide on the top of the frame 41 through the slider guide assembly, the servo drive component 43 is a servo motor (the servo motor has the characteristics of high control accuracy), the servo drive component 43 is controlled by a control unit, the motor shaft of the servo motor is provided with a gear, the frame 41 is provided with a horizontally arranged rack, the servo drive component 43 is installed on the mobile platform 42, and the servo motor drives the gear to rotate when working, and the gear is engaged with the rack. The gear will move on the rack and then drive the mobile platform 42 to move on the frame 41.

[0101] Combination Figures 1 to 7 As shown, a group of vertically arranged steel pipe grabbing cylinders 45 (only one is shown in the figure) are also installed on the mobile platform 42, and the front end of the piston rod of the steel pipe grabbing cylinder 45 is fixedly connected to a crossbeam 46 arranged along the length direction of the steel pipe, and a plurality of the steel pipe grabbing components 44 are installed on the crossbeam 46. The steel pipe grabbing cylinder 45 is a cylinder with adjustable stroke.

[0102] In the present invention, the servo drive component 43 is used to accurately control the horizontal displacement of the electromagnet to achieve quantitative grasping and transfer of the steel pipe. Steel pipes of different specifications are pre-programmed in the control unit.

[0103] The pressing cylinder 322 is installed on the frame 41, and one end of the pressing plate 3211 is connected to the frame 41 in a hinged manner.

[0104] Combination Figures 1 to 7 As shown, the feeding unit 5 is located in the empty area below the frame 41, and the feeding unit 5 includes a conveying roller 51, a pair of alignment head baffles 52 for aligning the end faces of the steel pipes, and a shaping component 53 arranged on both sides of the conveying roller 51 for shaping the steel pipes stacked on the conveying roller 51.

[0105] Among them, the conveying roller 51 is installed on a base 55, and the base 55 is movably arranged through a slider guide assembly arranged at the bottom thereof. The feeding unit 5 also includes a station switching power component 54, and the station switching power component 54 is a horizontally arranged cylinder. The station switching power component 54 is fixedly connected to the base 55, and the base 55 is driven to move by the station switching power component 54. The moving direction of the base 55 is consistent with the moving direction of the above-mentioned mobile platform 42.

[0106] The conveying roller 51 has a conveying station for conveying the steel pipe to the cutting fixture and an alignment station for aligning the end faces of the steel pipe. The conveying station and the alignment station are both located on the moving route of the base 55. The conveying roller 51 is driven by the station switching power component 54 to switch between the conveying station and the alignment station. When the conveying roller 51 is in the alignment station, the alignment head baffle 52 is respectively located at both ends of the conveying roller 51.

[0107] Combination Figures 1 to 3 as well as Figure 6 , Figure 7 As shown, the shaping assembly 53 includes a plurality of vertical shafts 531 disposed on both sides of the conveying roller 51 and a plurality of steel pipe shaping sleeves 532 detachably connected to the corresponding vertical shafts 531. Specifically, the vertical shafts 531 are provided with limiting steps, and the steel pipe shaping sleeves 532 are movably sleeved on the vertical shafts 531, so that they can be rotated during the conveying of the steel pipes to reduce the obstruction to the steel pipes. The movably sleeved manner also facilitates the disassembly and replacement of the steel pipe shaping sleeves 532.

[0108] The multiple steel pipe shaping sleeves 532 located on both sides of the conveying roller 51 limit the side of the steel pipe, so that the steel pipes stacked on the conveying roller 51 can maintain the same arrangement and placement pattern as the steel pipe arrangement and combination pattern required by the pipe cutting fixture. Steel pipes of different specifications have different steel pipe arrangement and combination patterns, so the steel pipe shaping sleeves 532 used for steel pipes of different specifications are also different. Each specification of steel pipe corresponds to a steel pipe shaping sleeve 532. Each specification of steel pipe can be replaced with the corresponding steel pipe shaping sleeve 532 before loading and cutting.

[0109] like Figures 8a to 8c As shown, the layout styles of two specifications of round steel pipes and one layout style of flat oval steel pipes are respectively shown.

[0110] The conveyor roller 51 receives the steel pipe transferred by the transfer mechanism 4 at the alignment station. After the steel pipe is placed on the conveyor roller 51 as required, the conveyor roller 51 starts to drive the steel pipe to hit the end baffles 52 at both ends, and the steel pipes to be transported at the same time are aligned end by end through a combination of high-speed and low-speed impacts. In actual production, after the steel pipes are aligned in this way, the error in the length direction of the steel pipe end will be less than 1mm, which fully meets the processing requirements.

[0111] The present invention can meet the feeding requirements of the steel pipe arrangement and combination pattern required by the cutting fixture in the pipe cutting machine. When the feeding unit 5 conveys the steel pipes to the cutting fixture, the stacking pattern of the steel pipes in the feeding unit 5 corresponds to the steel pipe arrangement and combination pattern required by the cutting fixture. In this way, the cutting tool is utilized to the maximum extent, and the maximum number of pipes can be achieved, thereby improving the pipe cutting efficiency of the pipe cutting machine.

[0112] Furthermore, if Figures 1 to 7 As shown, two conveying rollers 51 are arranged in parallel, two pairs of end-aligning baffles 52 are arranged correspondingly, and two groups of shaping components 53 are arranged correspondingly. The two conveying rollers 51 are installed on a base 55, and the two conveying rollers 51 share a conveying station. The two conveying rollers 51 respectively have an alignment station, and the two alignment stations are located on both sides of the conveying station.

[0113] The arrangement of the two conveyor rollers 51 can ensure that when one conveyor roller 51 conveys steel pipes to the pipe cutting machine, the other conveyor roller 51 can be used for the transfer mechanism 4 to stack steel pipes, thereby reducing the downtime of the pipe cutting machine waiting for loading, so that the pipe cutting efficiency can be further improved.

[0114] The invention has a wide range of applications, and can be specifically applicable to round steel pipes of Φ13, Φ16, Φ18, Φ19, and Φ22 specifications, and can also be applicable to flat oval steel pipes of 22×16 and 22×11 specifications. It is also applicable to extra-long pipes (up to 6 meters, with a maximum aspect ratio of more than 400, and a wall thickness of about 1 mm).

[0115] The working process of the present invention can be simply summarized as follows:

[0116] First, the feeding unit 1 pushes the steel pipe raw material into the distributing unit 2 (the whole bundle of steel pipe raw material is pushed in multiple portions by the feeding unit 1);

[0117] Afterwards, the material distribution unit 2 distributes the pushed steel pipes one by one;

[0118] Next, the discharging unit 3 discharges the steel pipes delivered by the discharging unit 2 in a single layer (the bracket 31 in the discharging unit 3 is horizontal when the transfer mechanism 4 takes the material, and is inclined when receiving the steel pipes delivered by the discharging unit 2 and when the steel pipes need to be re-discharged after the transfer mechanism 4 transfers away some of the steel pipes);

[0119] Next, the transfer mechanism 4 quantitatively transfers the discharged steel pipes to the conveyor roller 51 (the number and frequency of steel pipe transfers by the transfer mechanism 4 are based on the steel pipe arrangement and combination pattern required by the cutting fixture, and the conveyor roller 51 is located at the alignment station at this time);

[0120] Then, the conveyor roller 51 aligns the end faces of the transferred and placed steel pipes. After alignment, the conveyor roller 51 is switched to the conveying station, and finally the steel pipes are conveyed to the cutting fixture (two conveyor rollers 51 can be used, one for conveying steel pipes and the other for placing steel pipes).

[0121] The feeding unit, dividing unit, discharging unit, transfer mechanism, and delivery unit in the present invention coordinate and cooperate with each other through the control unit to realize mechanized, orderly and automatic loading of steel pipes. The only manual participation is to loosen the whole bundle of steel pipe raw materials hoisted into the feeding unit, remove the binding ropes, and supervise the equipment during the subsequent automatic loading process. The entire loading process has low labor intensity, low participation, and high automation. In addition, the present invention can load whole bundles of steel pipe raw materials without frequent feeding, which makes the present invention have the advantage of high steel pipe loading efficiency.

[0122] The present invention liberates manpower, requires very little manpower, and enables one person to supervise multiple devices.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic feeding device for a pipe cutting machine, characterized in that: include: A feeding unit (1) is used to push the whole bundle of steel pipe raw materials in multiple portions; The loading platform (11) is composed of a plurality of loading brackets (112) arranged in parallel and at intervals; the feeding unit (1) comprises the loading platform (11) and a pushing mechanism (12) for pushing the steel pipe; the pushing mechanism (12) comprises a moving component (121) and a pushing bracket (122) driven by the moving component (121); the moving component (121) comprises a moving trolley (1211) that can move up and down along the upper surface of the loading bracket (112), a rotating wheel (1212) rotatably connected to the loading bracket (112), and a rotating wheel (1212) that is wound around the rotating wheel (1212) and is connected to the moving trolley (112). 211) is fixedly connected to a nylon rope for pulling the moving trolley (1211), and an auxiliary roller (1213) rotatably arranged on the top of the material loading bracket (112); wherein the auxiliary roller (1213) has a guide groove for guiding the movement of the nylon rope, the nylon rope passes through the auxiliary roller (1213) and is located in the guide groove, and the moving trolley (1211) is moved up and down by changing the direction of the rotating wheel (1212), and when the rotating wheel (1212) winds up the nylon rope, the moving trolley (1211) moves upward and drives the pushing bracket (122) to move upward, thereby pushing the steel pipe; A material distribution unit (2) is used to distribute the multiple steel pipes pushed by the feeding unit (1) individually; A material discharging unit (3) is used to carry the steel pipes distributed by the material distributing unit (2) and to discharge the steel pipes distributed by the material distributing unit (2) in a single layer and in parallel; A transfer mechanism (4) is used to transfer the steel pipes discharged in the discharge unit (3) a number of times according to the number of steel pipe layers in the steel pipe arrangement and combination pattern required by the cutting fixture, wherein one layer is transferred each time, and the number of steel pipes transferred in each layer is controllable; and A feeding unit (5) is used to transport the steel pipe transferred by the transfer mechanism (4) as a whole to the cutting fixture of the pipe cutting machine, wherein the feeding unit (5) transports the steel pipe along the length direction of the steel pipe, and the feeding unit (5) is also used to align the end faces of the transferred steel pipe before transporting the steel pipe. The feeding unit (1), the material distribution unit (2), the material discharge unit (3), the transfer mechanism (4), and the feeding unit (5) cooperate with each other to complete the automatic feeding of the steel pipe.

2. The automatic feeding device for a pipe cutting machine according to claim 1, characterized in that: The feeding unit (1) comprises a loading platform (11) and a pushing mechanism (12) for pushing the steel pipe, wherein a bearing surface (111) of the loading platform (11) for bearing the steel pipe raw material is arranged obliquely, and the pushing mechanism (12) can move up and down along the bearing surface (111), and the pushing mechanism (12) pushes the steel pipe raw material in multiple portions from bottom to top.

3. The automatic feeding device for a pipe cutting machine according to claim 2, characterized in that: The pushing mechanism (12) comprises a moving component (121) and a pushing bracket (122) driven by the moving component (121); the upper surface of the loading bracket (112) is arranged to be inclined; each loading bracket (112) is provided with a corresponding pushing mechanism (12); wherein the plurality of pushing mechanisms (12) operate synchronously.

4. The automatic feeding device for a pipe cutting machine according to claim 1, characterized in that: The material distribution unit (2) comprises a material receiving rack (21) and a material distribution mechanism (22), wherein the material distribution mechanism (22) comprises a chain conveying assembly (221) for conveying the steel pipes on the material receiving rack (21) upward, a group of material distribution plates (222), and a kicking plate (223), wherein each of the material distribution plates (222) is provided with the kicking plate (223), and a steel pipe conveying space is provided between the kicking plate (223) on the previous material distribution plate (222) and the next material distribution plate (222), and the steel pipe conveying space becomes smaller during the conveying process of the chain conveying assembly (221) so that the kicking plate (223) can kick back the excess steel pipes.

5. The automatic feeding device for a pipe cutting machine according to claim 4, characterized in that: The chain conveyor assembly (221) comprises a plurality of chain conveyor subunits arranged in parallel, each of the chain conveyor subunits comprises two chain transmission mechanisms arranged at intervals, the chain transmission mechanisms comprising a chain (2211) and a pair of sprockets (2212), a group of material dividing plates (222) is arranged between the two chains (2211) in each of the chain conveyor subunits, and all the chain transmission mechanisms in the chain conveyor assembly (221) operate synchronously.

6. The automatic feeding device for a pipe cutting machine according to claim 1, characterized in that: The discharging unit (3) and the feeding unit (1) are respectively located on both sides of the distributing unit (2); the discharging unit (3) comprises a bracket (31) for receiving the steel pipes distributed by the distributing unit (2) and a pressing mechanism (32) for preventing the steel pipes from being stacked on the bracket (31); wherein the bracket (31) is swingable; the bracket (31) has an inclined discharging state and a horizontal material taking state for the transfer mechanism (4) to take the material; the pressing mechanism (32) comprises a pressing frame (321); the pressing frame (321) has a pressing position close to the bracket (31) and a material taking position turned away from the pressing position for facilitating the transfer mechanism (4) to take the material; when the pressing frame (321) is in the pressing position and the bracket (31) is in the discharging state, the gap between the pressing frame (321) and the bracket (31) only allows the steel pipes to be arranged in a single layer.

7. The automatic feeding device for a pipe cutting machine according to claim 6, characterized in that: The bracket (31) receives the steel pipe distributed by the distribution unit (2) in a discharging state, and an end of the bracket (31) adjacent to the distribution unit (2) is lower than a discharge port of the distribution unit (2), so that the steel pipe distributed by the distribution unit (2) falls onto the bracket (31).

8. The automatic feeding device for a pipe cutting machine according to claim 1, characterized in that: The transfer mechanism (4) comprises a frame (41), a mobile platform (42) movably arranged on the frame (41), a servo drive component (43) for driving the mobile platform (42) to move, and a steel pipe grasping component (44) movably arranged on the mobile platform (42) up and down, wherein the steel pipe grasping component (44) is an electromagnet.

9. The automatic feeding device for a pipe cutting machine according to claim 1, characterized in that: The feeding unit (5) comprises a conveying roller (51), a pair of alignment head baffles (52) for aligning the end surfaces of the two ends of the steel pipe, and shaping components (53) arranged on both sides of the conveying roller (51) for shaping the steel pipes stacked on the conveying roller (51). The shaping assembly (53) comprises a plurality of vertical shafts (531) arranged on both sides of the conveying roller (51) and steel pipe shaping sleeves (532) detachably connected to the vertical shafts (531). The steel pipes stacked on the conveying roller (51) are aligned with the steel pipe arrangement and combination pattern required by the cutting fixture through the steel pipe shaping sleeves (532). The conveying roller (51) has a conveying station for conveying the steel pipe to the cutting fixture and an alignment station for aligning the end faces of the steel pipe. The conveying roller (51) is driven by a station switching power component (54) to switch between the conveying station and the alignment station. When the conveying roller (51) is in the alignment station, the alignment head baffle (52) is respectively located at both ends of the conveying roller (51).

10. The automatic feeding device for a pipe cutting machine according to claim 9, characterized in that: The conveying rollers (51) are arranged in parallel in two pairs, the end baffles (52) are arranged in two pairs, and the shaping components (53) are arranged in two groups.

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