Feeding device, cutting machine and feeding method

Abstract

The invention discloses a feeding device, a cutting machine and a feeding method.The feeding device comprises a feeding frame and a push-back device, a feeding face is arranged on the upper side of the feeding frame, and the push-back device comprises a first push-back driving assembly, a first movable base, a lifting driving assembly, a lifting material blocking push-back base, an upper push-back driving mechanism and an upper push-back piece. The first displacement controller can control the first displacement control driving motor according to the section size parameter of the pipe so as to change the second width interval W2, that is, the in-place pushing position when the pipe is pushed back is changed; the lifting displacement controller can control the lifting displacement control driving motor according to the section size parameter of the pipe so as to change the height interval H, that is, the lifting in-place positions of the lifting material blocking push-back seat and the upper push-back piece during lifting are changed; therefore, when the specifications of the pipes are switched, the action positions of the lifting material blocking push-back seat and the upper push-back piece can be automatically and adaptively adjusted only by inputting the section size parameters of the pipes, operation is easy and convenient, and the switching efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and particularly to a feeding device, a cutting machine and a feeding method. Background Art

[0002] Cutting equipment such as a laser pipe cutting machine can realize automatic feeding of pipes through a feeding device. Currently, there is a feeding device. Referring to the patent with the publication number CN218618991U, it has a first pushing member and a second pushing member. The second pushing member first pushes all the pipes backward, and then the first pushing member pushes the pipes stacked on the upper layer down, realizing the feeding of single pipes.

[0003] Since pipes with different specifications and shapes have different cross-sectional dimensions, the matching degree between the action position of the pushing member and the cross-sectional dimension of the pipe has a great influence on the success rate and stability of feeding. However, in the current feeding device, the action position of the pushing member needs to be adjusted manually according to the dimensions of different pipes, which is inconvenient to adjust when switching the specifications of the pipes, and the switching efficiency is relatively low. Summary of the Invention

[0004] The main object of the present invention is to propose a feeding device, a cutting machine and a feeding method, aiming to solve the technical problem that when switching pipes of different specifications in the prior art, it is not convenient enough to adjust the position of the pushing member, and the switching efficiency is relatively low.

[0005] To achieve the above object, in the first aspect of the present invention, a feeding device is proposed, including a feeding rack and a pushing device. A feeding surface with a conveying direction from back to front is provided on the upper side of the feeding rack. The pushing device includes a first pushing drive assembly, a first movable seat, a lifting drive assembly, a lifting and blocking pushing seat, an upper pushing drive mechanism and an upper pushing member;

[0006] The first pushing drive assembly includes a first motor assembly and a first transmission mechanism. The first motor assembly includes a first displacement control drive motor and a first displacement controller. The first displacement control drive motor is relatively fixed to the feeding rack. The first displacement controller is electrically connected to the first displacement control drive motor. The first displacement control drive motor is in transmission connection with the first transmission mechanism. The first movable seat is slidably connected to the feeding rack in the front-rear direction. The first transmission mechanism is in transmission connection with the first movable seat. The first displacement control drive motor and the first transmission mechanism can drive the first movable seat to move in the front-rear direction;

[0007] The lifting drive assembly includes a lifting motor assembly and a lifting transmission mechanism. The lifting motor assembly includes a lifting displacement control drive motor and a lifting displacement controller. The lifting displacement control drive motor is fixedly connected to the first movable seat. The lifting displacement controller is electrically connected to the lifting displacement control drive motor. The lifting displacement control drive motor is in transmission connection with the lifting transmission mechanism. The lifting material blocking and pushing-back seat is slidably connected to the first movable seat in the up-and-down direction. The lifting transmission mechanism is in transmission connection with the lifting material blocking and pushing-back seat. The lifting displacement control drive motor and the lifting transmission mechanism can drive the lifting material blocking and pushing-back seat and the upper pushing-back member to move upward above the feeding surface or downward below the feeding surface. A material blocking and pushing surface is provided at the rear side of the lifting material blocking and pushing-back seat;

[0008] The upper pushing-back drive mechanism is arranged on the lifting material blocking and pushing-back seat. The upper pushing-back member is in transmission connection with the upper pushing-back drive mechanism. A upper pushing surface is provided at the rear side of the upper pushing-back member. The upper pushing-back drive mechanism can drive the upper pushing-back member to move in the front-back direction so that the upper pushing surface extends to the rear side of the material blocking and pushing surface or retracts in front of the material blocking and pushing surface. At least part of the material blocking and pushing surface is arranged below the upper pushing surface;

[0009] The lifting material blocking and pushing-back seat has a material blocking position and a pushing-in place position located at the rear side of the material blocking position when moving in the front-back direction. In the material blocking position, there is a first width spacing W1 between the material blocking and pushing surface and the rear side of the feeding surface. In the pushing-in place position, there is a second width spacing W2 that can only allow a single pipe to stay between the material blocking and pushing surface and the rear side of the feeding surface. The position where the upper pushing-back member moves upward to the upper side of the feeding surface is the rising-in place position. In the rising-in place position, there is a height spacing H that can only allow a single pipe to pass between the lower side of the upper pushing-back member and the feeding surface. The first displacement controller can control the first displacement control drive motor according to the cross-sectional dimension parameters of the pipe to change the second width spacing W2. The lifting displacement controller can control the lifting displacement control drive motor according to the cross-sectional dimension parameters of the pipe to change the height spacing H;

[0010] When the upper pushing-back member moves upward to the rising-in place position, the lifting material blocking and pushing-back seat moves to the pushing-in place position, and the upper pushing surface extends to the rear side of the material blocking and pushing surface, a pipe-retaining space that can only hold a single pipe is formed between the lower side of the upper pushing-back member, the rear side of the material blocking and pushing surface, and the upper side of the feeding surface.

[0011] The lifting and lowering material blocking and pushing-back seat and the upper pushing-back member are respectively used to push back the pipe and push down the pipes stacked on the upper side. In this feeding device, a first motor assembly and a lifting motor assembly are provided to adjust the action positions of the lifting and lowering material blocking and pushing-back seat and the upper pushing-back member. The first displacement controller can control the first displacement control driving motor according to the cross-sectional dimension parameters of the pipe to change the second width spacing W2, that is, to change the material pushing-in place position when pushing back the pipe. The lifting displacement controller can control the lifting displacement control driving motor according to the cross-sectional dimension parameters of the pipe to change the height spacing H, that is, to change the rising in-place position when the lifting and lowering material blocking and pushing-back seat and the upper pushing-back member rise. This enables the automatic adjustment of the action positions of the lifting and lowering material blocking and pushing-back seat and the upper pushing-back member by simply inputting the cross-sectional dimension parameters of the pipe when switching the pipe specifications, with simple and convenient operation and high switching efficiency.

[0012] Preferably, the first transmission mechanism includes a first gear and a first rack. The first gear is in transmission connection with the first displacement control driving motor. The first rack extends in the front-back direction and is fixedly connected to the first movable seat. The first gear is meshed with the first rack. The lifting transmission mechanism includes a lifting gear and a lifting rack. The lifting gear is in transmission connection with the lifting displacement control driving motor. The lifting rack extends in the up-down direction and is fixedly connected to the lifting and lowering material blocking and pushing-back seat. The lifting gear is meshed with the lifting rack.

[0013] Preferably, the first displacement control driving motor and the lifting displacement control driving motor are respectively servo motors, and the first displacement controller and the lifting displacement controller are respectively servo drivers.

[0014] In the second aspect of the present invention, a cutting machine with the above feeding device is further proposed. The cutting machine further includes a pipe size acquisition module for acquiring the cross-sectional dimension parameters of the pipe to be fed. Both the first displacement controller and the lifting displacement controller are in signal connection with the pipe size acquisition module, and the pipe size acquisition module can transmit the acquired cross-sectional dimension parameters to the first displacement controller and the lifting displacement controller.

[0015] When switching the pipe specifications, the cross-sectional dimension parameters of the pipe to be fed can be acquired through the pipe size acquisition module, and then the action positions of the lifting and lowering material blocking and pushing-back seat and the upper pushing-back member can be automatically adjusted, with simple and convenient operation and high switching efficiency.

[0016] Preferably, the number of the feeding devices is plural, the plural feeding devices are arranged at intervals in the left - right direction, the number of the first displacement control driving motors is one, the cutting machine further includes a transmission shaft, the transmission shaft is in transmission connection with the first displacement control driving motor, the transmission shaft passes through the plural feeding devices, and the first transmission mechanisms of the plural feeding devices are all connected to the transmission shaft.

[0017] Preferably, the feeding device further includes a second material blocking assembly. In the front - rear direction, the second material blocking assembly is arranged at the middle of the feeding surface. The second material blocking assembly includes a second material blocking driving mechanism and a second material blocking member. The second material blocking driving mechanism is arranged on the feeding rack, the second material blocking member is in transmission connection with the second material blocking driving mechanism, and the second material blocking driving mechanism can drive the second material blocking member to protrude upward or retract downward below the feeding surface.

[0018] The cutting machine further includes a machine frame, on which a pipe pushing limiting assembly and a pipe pushing baffle are arranged. The pipe pushing limiting assembly and the pipe pushing baffle are respectively located on the left and right sides of the feeding device. The pipe pushing limiting assembly includes a pipe pushing limiting driving mechanism and a pipe pushing limiting member. The pipe pushing limiting driving mechanism is arranged on the machine frame, the pipe pushing limiting driving mechanism is in transmission connection with the pipe pushing limiting member, the pipe pushing limiting member is arranged in a position - matching manner with the second material blocking member, the pipe pushing limiting driving mechanism can drive the pipe pushing limiting member to approach or move away from the pipe pushing baffle, and the pipe pushing limiting member can push the pipe blocked by the second material blocking member towards the pipe pushing baffle.

[0019] When the lifting material - blocking and pushing - back seat and the upper pushing - back member descend below the feeding surface, the pipe is conveyed forward along the feeding surface to the position of the second material blocking assembly, the second material blocking member blocks the pipe, and the pipe can wait for feeding at this position; then, the pipe pushing limiting driving mechanism of the pipe pushing limiting assembly drives the pipe pushing limiting member to push one end of the pipe, so that the pipe approaches the pipe pushing baffle, and the pipe pushing baffle blocks the other end of the pipe, realizing the limitation of the pipe in the left - right direction, that is, the length direction; then, the pipe pushing limiting member moves away from the end of the pipe, and the second material blocking member protrudes upward or retracts below the feeding surface, and the pipe continues to be conveyed forward. By limiting the pipe through the pipe pushing limiting assembly and the pipe pushing baffle, when the pipe is fed to the front side, its position in the left - right direction is basically the same, so as to avoid excessive left - right position deviation of the pipe, reduce the distance that the chuck of the cutting machine gives way to the end of the pipe before feeding, and improve the efficiency of clamping the pipe.

[0020] In the third aspect of the present invention, a feeding method using the above - mentioned feeding device is further proposed. The feeding method includes the following steps:

[0021] S1: Obtain the cross - sectional dimension parameters of the pipe;

[0022] S2: Calculate the values of the second width spacing W2 and the height spacing H according to the cross-sectional dimension parameters;

[0023] S3: The first displacement controller drives the first displacement control drive motor to drive the lifting material retaining and pushing-back seat to move to the material retaining position, and the lifting displacement controller drives the lifting displacement control drive motor to drive the lifting material retaining and pushing-back seat and the upper pushing-back member to rise to the rising-in-place position according to the height spacing H;

[0024] S4: Multiple pipes are loaded onto the feeding surface from the rear side of the feeding surface, and the pipes are transported forward until they are blocked by the material retaining and pushing surface;

[0025] S5: The first displacement controller drives the first displacement control drive motor to drive the lifting material retaining and pushing-back seat to move to the pushing-in-place position according to the second width spacing W2. During the movement of the lifting material retaining and pushing-back seat, the pipes on the feeding surface are pushed backward, and only a single pipe can pass through the second width spacing W2;

[0026] S6: The upper pushing-back drive mechanism drives the upper pushing-back member to move backward, the upper pushing surface extends backward to the rear side of the material retaining and pushing surface, the upper pushing surface pushes the pipes stacked on the upper side to fall, and only a single pipe remains in the pipe-retaining space;

[0027] S7: The upper pushing-back drive mechanism drives the upper pushing-back member to move forward, the upper pushing surface retracts forward to before the material retaining and pushing surface, and then the lifting displacement control drive motor drives the lifting material retaining and pushing-back seat and the upper pushing-back member to lower below the feeding surface, so that the single pipe remaining on the feeding surface is transported forward and loaded onto the machine.

[0028] When switching the pipe specifications, only the cross-sectional dimension parameters of the pipes need to be input, and the action positions of the lifting material retaining and pushing-back seat and the upper pushing-back member can be automatically adjusted adaptively. The operation is simple and convenient, and the switching efficiency is relatively high.

[0029] Preferably, step S2 further includes calculating the first width spacing W1 according to the cross-sectional dimension parameters; in step S3, the first displacement controller drives the first displacement control drive motor to drive the lifting material retaining and pushing-back seat to move to the material retaining position according to the first width spacing W1. The material retaining position is also controlled and changed according to the cross-sectional dimension parameters, which can further increase the feeding adaptability to different specifications of pipes. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0031] Figure 1 Structural schematic diagram of the feeding device of the present invention;

[0032] Figure 2 Structural schematic diagram of the feeding device of the present invention from another angle;

[0033] Figure 3 Partial structural schematic diagram of the feeding device of the present invention when the lifting material blocking and pushing-back seat is in the material blocking position;

[0034] Figure 4 Partial structural schematic diagram of the feeding device of the present invention when the lifting material blocking and pushing-back seat is in the material pushing-in place position, the upper pushing-back member is in the rising-in place position and extends;

[0035] Figure 5 Structural schematic diagram of the cutting machine of the present invention.

[0036] In the drawings: 1 - feeding frame, 11 - feeding surface, 12 - pipe retaining space, 21 - first displacement control driving motor, 22 - first gear, 23 - first rack, 24 - transmission shaft, 27 - first movable seat, 31 - lifting displacement control driving motor, 32 - lifting gear, 33 - lifting rack, 37 - lifting material blocking and pushing-back seat, 371 - material blocking and pushing surface, 41 - upper pushing-back driving mechanism, 42 - upper pushing-back member, 421 - upper material pushing surface, 5 - frame, 61 - second material blocking driving mechanism, 62 - second material blocking member, 711 - pipe pushing limit driving mechanism, 712 - pipe pushing limit member, 72 - pipe pushing baffle.

[0037] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0039] It should be noted that if there are directional indications involved in the embodiments of the present invention, such as up, down, left, right, front, back, etc., these directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions such as "first" and "upper" in the embodiments of the present invention, these descriptions such as "first" and "upper" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "upper" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0041] As Figures 1 to 4 shown, a feeding device includes a feeding rack 1 and a pushing-back device. A feeding surface 11 with a conveying direction from back to front is provided on the upper side of the feeding rack 1. The storage area for multiple pipes is behind the feeding surface 11. Multiple pipes can be fed upward to the feeding surface 11 through a belt feeding mechanism. When the pipes on the feeding surface 11 are pushed back and dropped, they fall back to the storage area. Preferably, the feeding surface 11 is inclined downward from back to front, and the pipes automatically slide downward under the action of gravity when on the feeding surface 11.

[0042] The pushing-back device includes a first pushing-back driving assembly, a first movable seat 27, a lifting driving assembly, a lifting and blocking pushing-back seat 37, an upper pushing-back driving mechanism 41, and an upper pushing-back member 42;

[0043] The first pushing-back driving assembly includes a first motor assembly and a first transmission mechanism. The first motor assembly includes a first displacement control driving motor 21 and a first displacement controller. The first displacement control driving motor 21 is relatively fixed to the feeding rack 1. The first displacement controller is electrically connected to the first displacement control driving motor 21. The first displacement control driving motor 21 is in transmission connection with the first transmission mechanism. The first movable seat 27 is slidably connected to the feeding rack 1 in the front-back direction. The first transmission mechanism is in transmission connection with the first movable seat 27. The first displacement control driving motor 21 and the first transmission mechanism can drive the first movable seat 27 to move in the front-back direction;

[0044] The lifting drive assembly includes a lifting motor assembly and a lifting transmission mechanism. The lifting motor assembly includes a lifting displacement control drive motor 31 and a lifting displacement controller. The lifting displacement control drive motor 31 is fixedly connected to the first movable seat 27. The lifting displacement controller is electrically connected to the lifting displacement control drive motor 31. The lifting displacement control drive motor 31 is in transmission connection with the lifting transmission mechanism. The lifting material blocking and pushing seat 37 is slidably connected to the first movable seat 27 in the up and down direction. The lifting transmission mechanism is in transmission connection with the lifting material blocking and pushing seat 37. The lifting displacement control drive motor 31 and the lifting transmission mechanism can drive the lifting material blocking and pushing seat 37 and the upper pushing member 42 to move upward above the feeding surface 11 or downward below the feeding surface 11. A material blocking and pushing surface 371 is provided at the rear side of the lifting material blocking and pushing seat 37;

[0045] The upper pushing drive mechanism 41 is arranged on the lifting material blocking and pushing seat 37. The upper pushing member 42 is in transmission connection with the upper pushing drive mechanism 41. A upper pushing surface 421 is provided at the rear side of the upper pushing member 42. The upper pushing drive mechanism 41 can drive the upper pushing member 42 to move in the front and rear direction so that the upper pushing surface 421 extends to the rear side of the material blocking and pushing surface 371 or retracts in front of the material blocking and pushing surface 371. At least part of the material blocking and pushing surface 371 is arranged below the upper pushing surface 421;

[0046] The lifting material blocking and pushing seat 37 moves in the front and rear direction with a material blocking position and a pushing-in-place position located at the rear side of the material blocking position. In the material blocking position, there is a first width spacing W1 between the material blocking and pushing surface 371 and the rear side of the feeding surface 11. Refer to Figure 3 , in the pushing-in-place position, there is a second width spacing W2 that can only allow a single pipe to stay between the material blocking and pushing surface 371 and the rear side of the feeding surface 11. Refer to Figure 4 The position where the upper pushing member 42 moves upward to the upper side of the feeding surface 11 is the rising-in-place position. In the rising-in-place position, there is a height spacing H that can only allow a single pipe to pass between the lower side of the upper pushing member 42 and the feeding surface 11. The first displacement controller can control the first displacement control drive motor 21 according to the cross-sectional dimension parameters of the pipe to change the second width spacing W2. The lifting displacement controller can control the lifting displacement control drive motor 31 according to the cross-sectional dimension parameters of the pipe to change the height spacing H;

[0047] When the upper pushing member 42 moves upward to the rising-in-place position, the lifting material blocking and pushing seat 37 moves to the pushing-in-place position, and the upper pushing surface 421 extends to the rear side of the material blocking and pushing surface 371, a pipe-retaining space 12 that can only hold a single pipe is formed between the lower side of the upper pushing member 42, the rear side of the material blocking and pushing surface 371, and the upper side of the feeding surface 11. Refer to Figure 4 .

[0048] The lifting and feeding back-pushing seat 37 and the upper back-pushing member 42 are respectively used for pushing the pipe back and pushing the pipes stacked on the upper side down. In this feeding device, a first motor assembly and a lifting motor assembly are provided to adjust the action positions of the lifting and feeding back-pushing seat 37 and the upper back-pushing member 42. The first displacement controller can control the first displacement control driving motor 21 according to the cross-sectional dimension parameters of the pipe to change the second width spacing W2, that is, to change the feeding-in-place position when pushing the pipe back. The lifting displacement controller can control the lifting displacement control driving motor 31 according to the cross-sectional dimension parameters of the pipe to change the height spacing H, that is, to change the rising-in-place position when the lifting and feeding back-pushing seat 37 and the upper back-pushing member 42 rise. This enables the automatic adjustment of the action positions of the lifting and feeding back-pushing seat 37 and the upper back-pushing member 42 by simply inputting the cross-sectional dimension parameters of the pipe when switching the pipe specifications, making the operation simple and convenient and the switching efficiency relatively high.

[0049] Taking the height of the currently fed pipe as h, then h < H < 2h. To adapt to the current pipe, H can be made as close to h as possible according to the actual situation; there is a width spacing W2 between the material-blocking and pushing surface 371 and the rear side of the feeding surface 11 that can only hold and pass a single pipe. Taking the width of the currently fed pipe as w, then w < W2 < 2w. To adapt to the current pipe, W2 can be made as close to w as possible according to the actual situation. A pipe-holding space 12 that can only hold a single pipe is formed between the lower side of the first back-pushing part, the rear side of the second pushing surface, and the upper side of the conveying surface. In addition, when the upper pushing surface 421 extends to the rear side of the material-blocking and pushing surface 371, the front-to-back distance between the upper pushing surface 421 and the material-blocking and pushing surface 371 should be such that the stacked pipes can be pushed down. This feeding device can feed pipes with different cross-sectional shapes. For example, when the pipe is a round pipe, the cross-sectional dimension parameter is the outer diameter of the pipe; when the pipe is a square pipe, the cross-sectional dimension parameter is the side length of the pipe; when the pipe is a rectangular pipe, the cross-sectional dimension parameter can be the length of the long side of the rectangle, with the aim of enabling only a single pipe to be fed.

[0050] In some specific embodiments, the first transmission mechanism includes a first gear 22 and a first rack 23. The first gear 22 is in transmission connection with the first displacement control driving motor 21. The first rack 23 extends in the front-rear direction and is fixedly connected to the first movable seat 27. The first gear 22 is in meshing connection with the first rack 23. The lifting transmission mechanism includes a lifting gear 32 and a lifting rack 33. The lifting gear 32 is in transmission connection with the lifting displacement control driving motor 31. The lifting rack 33 extends in the up-down direction and is fixedly connected to the lifting material blocking and pushing-back seat 37. The lifting gear 32 is in meshing connection with the lifting rack 33. Taking the lifting driving assembly as an example, the lifting displacement controller can control the rotation angle of the rotating shaft of the lifting displacement control driving motor 31 according to the distance from the descending position to the ascending-in-place position, in combination with the pitch modulus of the lifting gear 32 and the lifting rack 33, etc., so as to control and adjust the lifting distance position of the lifting material blocking and pushing-back seat 37 and the upper pushing member 42. In other embodiments, the first transmission mechanism and the lifting transmission mechanism can also be motion modules such as lead screws or synchronous belt and synchronous pulley. The upper pushing driving mechanism 41 can adopt a cylinder.

[0051] In some specific embodiments, the first displacement control driving motor 21 and the lifting displacement control driving motor 31 are respectively servo motors, and the first displacement controller and the lifting displacement controller are respectively servo drivers. The servo motor and the servo driver can accurately control the moving distance position. In other embodiments, the first displacement control driving motor 21 and the lifting displacement control driving motor 31 can also be stepper motors, and the first displacement controller and the lifting displacement controller can be stepper drivers.

[0052] In the second aspect of the present invention, a cutting machine with the above-mentioned feeding device is further proposed. Referring to Figure 5 , the cutting machine further includes a pipe size acquisition module for acquiring the cross-sectional dimension parameters of the pipe to be fed. Both the first displacement controller and the lifting displacement controller are in signal connection with the pipe size acquisition module, and the pipe size acquisition module can transmit the acquired cross-sectional dimension parameters to the first displacement controller and the lifting displacement controller.

[0053] The pipe size acquisition module can be a control panel, and the user can input the cross-sectional dimension parameters of the pipe on the control interface. When switching the pipe specifications, the cross-sectional dimension parameters of the pipe to be fed can be acquired through the pipe size acquisition module, and then the action positions of the lifting material blocking and pushing-back seat 37 and the upper pushing member 42 can be automatically adjusted adaptively. The operation is simple and convenient, and the switching efficiency is relatively high. The cutting machine further includes a controller, which can calculate the operation data of the first displacement control driving motor 21 and the lifting displacement control driving motor 31 according to the cross-sectional dimension parameters and transmit them to the first displacement controller and the lifting displacement controller for driving.

[0054] In some specific embodiments, the number of loading devices is multiple, and the multiple loading devices are arranged at intervals in the left-right direction. The number of the first displacement control driving motors 21 is one. The cutting machine further includes a transmission shaft 24, and the transmission shaft 24 is in transmission connection with the first displacement control driving motor 21. The transmission shaft 24 passes through the multiple loading devices, and the first transmission mechanisms of the multiple loading devices are all connected to the transmission shaft 24, which can reduce the number of the first displacement control driving motors 21 and lower the equipment cost. In this embodiment, the multiple first gears 22 are all fixedly connected to the transmission shaft 24.

[0055] In some specific embodiments, the loading device further includes a second material blocking assembly. In the front-rear direction, the second material blocking assembly is arranged in the middle of the feeding surface 11. The second material blocking assembly includes a second material blocking driving mechanism 61 and a second material blocking member 62. The second material blocking driving mechanism 61 is arranged on the loading rack 1. The second material blocking driving mechanism 61 can adopt a cylinder. The second material blocking member 62 is in transmission connection with the second material blocking driving mechanism 61. The second material blocking driving mechanism 61 can drive the second material blocking member 62 to protrude upward or retract downward below the feeding surface 11.

[0056] The cutting machine further includes a machine frame 5. A pipe pushing limiting assembly and a pipe pushing baffle 72 are arranged on the machine frame 5. The pipe pushing limiting assembly and the pipe pushing baffle 72 are respectively located on the left and right sides of the loading device. The pipe pushing limiting assembly includes a pipe pushing limiting driving mechanism 711 and a pipe pushing limiting member 712. The pipe pushing limiting driving mechanism 711 is arranged on the machine frame 5. The pipe pushing limiting driving mechanism 711 can adopt a cylinder. The pipe pushing limiting driving mechanism 711 is in transmission connection with the pipe pushing limiting member 712. The pipe pushing limiting member 712 is arranged in a position matching with the second material blocking member 62. The pipe pushing limiting driving mechanism 711 can drive the pipe pushing limiting member 712 to approach or move away from the pipe pushing baffle 72. The pipe pushing limiting member 712 can push the pipe blocked by the second material blocking member 62 towards the pipe pushing baffle 72.

[0057] When the lifting and lowering material blocking push-back seat 37 and the upper push-back member 42 descend below the feeding surface 11, the pipe is conveyed forward along the feeding surface 11 to the position of the second material blocking assembly, and the second material blocking member 62 blocks the pipe, and the pipe can wait for loading at this position; then the pipe pushing limit driving mechanism 711 of the pipe pushing limit assembly drives the pipe pushing limit member 712 to push one end of the pipe, so that the pipe approaches the pipe pushing baffle 72, and the pipe pushing baffle 72 blocks the other end of the pipe, thereby limiting the pipe in the left and right directions, that is, the length direction; then, the pipe pushing limit member 712 moves away from the end of the pipe, the second material blocking member 62 protrudes upward or shrinks below the feeding surface 11, and the pipe continues to be conveyed forward. The pipe is limited by the pipe push limit assembly and the pipe push baffle 72, so that the pipe is basically at the same position in the left and right directions when it is fed to the front side, so as to avoid excessive deviation of the left and right positions of the pipe. Since a chuck (not shown in the drawings) is arranged at the front end of the feeding device to clamp the pipe at both ends of the pipe, the distance that the chuck of the cutting machine clears the end of the pipe before feeding can be reduced, thereby improving the efficiency of clamping the pipe. Furthermore, a pipe push drive mechanism is also provided on the frame 5, and the pipe push drive mechanism is in transmission connection with the pipe push limit assembly. The pipe push drive mechanism can drive the pipe push limit assembly to move in the left and right directions, so that the pipe push limit assembly can adapt to pushing pipes of different lengths.

[0058] In a third aspect, the present invention further provides a feeding method using the above-mentioned feeding device, the feeding method comprising the following steps:

[0059] S1: Get the cross-sectional dimension parameters of the pipe;

[0060] S2: Calculate the values ​​of the second width spacing W2 and the height spacing H according to the cross-sectional dimension parameters;

[0061] S3: The first displacement controller drives the first displacement control driving motor 21 to drive the lifting material blocking push-back seat 37 to move to the material blocking position, and the lifting displacement controller drives the lifting displacement control driving motor 31 to drive the lifting material blocking push-back seat 37 and the upper push-back member 42 to rise to the raised position according to the height spacing H;

[0062] S4: Multiple pipes are loaded onto the feeding surface 11 from the rear side of the feeding surface 11, and the pipes are transported forward until they are blocked by the blocking and pushing surface 371;

[0063] S5: The first displacement controller drives the first displacement control driving motor 21 according to the second width interval W2 to drive the lifting material blocking and pushing back seat 37 to move to the pushing position. The lifting material blocking and pushing back seat 37 pushes the pipe on the feeding surface 11 backwards during the movement, and only a single pipe stays and passes through the second width interval W2;

[0064] S6: The previous backward pushing drive mechanism 41 drives the previous backward pushing member 42 to move backward, and the upper pushing surface 421 extends backward to the rear side of the material blocking and pushing surface 371. The upper pushing surface 421 pushes down the pipes stacked on the upper side, and only a single pipe remains in the pipe retaining space 12.

[0065] S7: The previous backward pushing drive mechanism 41 drives the previous backward pushing member 42 to move forward. The upper pushing surface 421 retracts forward to before the material blocking and pushing surface 371. Then, the lifting and displacement control drive motor 31 drives the lifting material blocking and backward pushing seat 37 and the previous backward pushing member 42 to lower below the feeding surface 11, so that the single pipe staying on the feeding surface 11 is conveyed forward for feeding along the feeding surface 11.

[0066] When switching the pipe specifications, only the cross-sectional dimension parameters of the pipes need to be input, and the action positions of the lifting material blocking and backward pushing seat 37 and the previous backward pushing member 42 can be automatically adjusted adaptively. The operation is simple and convenient, and the switching efficiency is relatively high.

[0067] In some specific embodiments, step S2 further includes calculating a first width spacing W1 according to the cross-sectional dimension parameters; in step S3, the first displacement controller drives the first displacement control drive motor 21 to drive the lifting material blocking and backward pushing seat 37 to move to the material blocking position according to the first width spacing W1.

[0068] The material blocking position is also controlled and changed according to the cross-sectional dimension parameters, which can further increase the feeding of pipes with different specifications.

[0069] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A feeding device, characterized in that: The invention comprises a loading rack (1) and a push-back device, wherein the upper side of the loading rack (1) is provided with a feeding surface (11) with a conveying direction from back to front, and the push-back device comprises a first push-back drive assembly, a first movable seat (27), a lifting drive assembly, a lifting material blocking push-back seat (37), an upper push-back drive mechanism (41) and an upper push-back member (42); The first push-back drive assembly comprises a first motor assembly and a first transmission mechanism, the first motor assembly comprises a first displacement control drive motor (21) and a first displacement controller, the first displacement control drive motor (21) is relatively fixed to the loading rack (1), the first displacement controller is electrically connected to the first displacement control drive motor (21), the first displacement control drive motor (21) is transmission-connected to the first transmission mechanism, the first movable seat (27) is slidingly connected to the loading rack (1) along the front-rear direction, the first transmission mechanism is transmission-connected to the first movable seat (27), and the first displacement control drive motor (21) and the first transmission mechanism can drive the first movable seat (27) to move along the front-rear direction; The lifting drive assembly comprises a lifting motor assembly and a lifting transmission mechanism, wherein the lifting motor assembly comprises a lifting displacement control driving motor (31) and a lifting displacement controller, wherein the lifting displacement control driving motor (31) is fixedly connected to the first movable seat (27), the lifting displacement controller is electrically connected to the lifting displacement control driving motor (31), the lifting displacement control driving motor (31) is transmission-connected to the lifting transmission mechanism, the lifting material blocking push-back seat (37) is slidingly connected to the first movable seat (27) along the up-down direction, the lifting transmission mechanism is transmission-connected to the lifting material blocking push-back seat (37), the lifting displacement control driving motor (31) and the lifting transmission mechanism can drive the lifting material blocking push-back seat (37) and the upper push-back member (42) to move upwards to be higher than the feeding surface (11) or to shrink downwards to be below the feeding surface (11), and a material blocking push-back surface (371) is provided on the rear side of the lifting material blocking push-back seat (37); The upper push-back driving mechanism (41) is arranged on the lifting material-blocking push-back seat (37), the upper push-back member (42) is transmission-connected with the upper push-back driving mechanism (41), the rear side of the upper push-back member (42) is provided with an upper push-up surface (421), the upper push-back driving mechanism (41) can drive the upper push-back member (42) to move in the front-rear direction so that the upper push-up surface (421) extends to the rear side of the material-blocking push-up surface (371) or retracts to the front of the material-blocking push-up surface (371), and at least part of the material-blocking push-up surface (371) is arranged on the lower side of the upper push-up surface (421); The lifting material blocking and pushing back seat (37) moves in the front-to-back direction to have a blocking position and a pushing position located at the rear side of the blocking position. In the blocking position, a first width spacing W1 is provided between the blocking pushing surface (371) and the rear side of the feeding surface (11). In the pushing position, a second width spacing W2 is provided between the blocking pushing surface (371) and the rear side of the feeding surface (11) so that only a single pipe can pass through. The upper push-back member (42) moves upward to the upper side of the feeding surface (11) to be the lifting position. In the lifting position, a height spacing H is provided between the lower side of the upper push-back member (42) and the feeding surface (11) so that only a single pipe can pass through. The first displacement controller can control the first displacement control driving motor (21) according to the cross-sectional size parameters of the pipe to change the second width spacing W2. The lifting displacement controller can control the lifting displacement control driving motor (31) according to the cross-sectional size parameters of the pipe to change the height spacing H. When the upper push-back member (42) moves upward to the raised position, the lifting and lowering material blocking push-back seat (37) moves to the material pushing position, and the upper pushing surface (421) extends to the rear side of the material blocking and pushing surface (371), a pipe retention space (12) that can only hold a single pipe is formed between the lower side of the upper push-back member (42), the rear side of the material blocking and pushing surface (371) and the upper side of the feeding surface (11).

2. The feeding device according to claim 1, characterized in that: The first transmission mechanism comprises a first gear (22) and a first rack (23); the first gear (22) is transmission-connected to the first displacement control drive motor (21); the first rack (23) extends in a front-to-rear direction; the first rack (23) is fixedly connected to the first movable seat (27); the first gear (22) is meshingly connected to the first rack (23); The lifting transmission mechanism comprises a lifting gear (32) and a lifting rack (33); the lifting gear (32) is drivingly connected to the lifting displacement control drive motor (31); the lifting rack (33) extends in the up-down direction; the lifting rack (33) is fixedly connected to the lifting material blocking push-back seat (37); and the lifting gear (32) is meshingly connected to the lifting rack (33).

3. The feeding device according to claim 1, characterized in that: The first displacement control drive motor (21) and the lifting displacement control drive motor (31) are servo motors respectively, and the first displacement controller and the lifting displacement controller are servo drivers respectively.

4. A cutting machine, characterized in that: The cutting machine comprises a feeding device as described in any one of claims 1 to 3, wherein the cutting machine further comprises a tube size acquisition module, wherein the tube size acquisition module is used to acquire cross-sectional size parameters of the tube to be fed, wherein the first displacement controller and the lifting displacement controller are both connected to the tube size acquisition module by signal, and the tube size acquisition module can transmit the acquired cross-sectional size parameters to the first displacement controller and the lifting displacement controller.

5. The cutting machine according to claim 4, characterized in that The number of the feeding devices is multiple, and the multiple feeding devices are arranged at intervals in the left-right direction. The number of the first displacement control drive motor (21) is one. The cutting machine also includes a transmission shaft (24), and the transmission shaft (24) is transmission-connected to the first displacement control drive motor (21). The transmission shaft (24) passes through the multiple feeding devices, and the first transmission mechanisms of the multiple feeding devices are all connected to the transmission shaft (24).

6. The cutting machine according to claim 4, characterized in that: The feeding device further comprises a second material blocking assembly, the second material blocking assembly being arranged at the middle of the feeding surface (11) in the front-rear direction, the second material blocking assembly comprising a second material blocking driving mechanism (61) and a second material blocking member (62), the second material blocking driving mechanism (61) being arranged on the feeding frame (1), the second material blocking member (62) being in transmission connection with the second material blocking driving mechanism (61), and the second material blocking driving mechanism (61) being capable of driving the second material blocking member (62) to protrude upward or retract downward below the feeding surface (11); The cutting machine also includes a frame (5), on which a tube push limit assembly and a tube push baffle (72) are provided. The tube push limit assembly and the tube push baffle (72) are respectively located on the left and right sides of the feeding device. The tube push limit assembly includes a tube push limit driving mechanism (711) and a tube push limit piece (712). The tube push limit driving mechanism (711) is arranged on the frame (5). The tube push limit driving mechanism (711) is transmission-connected with the tube push limit piece (712). The tube push limit piece (712) is arranged to match the position of the second material stopper (62). The tube push limit driving mechanism (711) can drive the tube push limit piece (712) to approach or move away from the tube push baffle (72). The tube push limit piece (712) can push the tube blocked by the second material stopper (62) toward the tube push baffle (72).

7. A feeding method, characterized in that: Using the feeding device according to any one of claims 1 to 3, the feeding method comprises the following steps: S1: Get the cross-sectional dimension parameters of the pipe; S2: Calculating the values ​​of the second width interval W2 and the height interval H according to the cross-sectional dimension parameters; S3: the first displacement controller drives the first displacement control drive motor (21) to drive the lifting material blocking push-back seat (37) to move to the material blocking position, and the lifting displacement controller drives the lifting displacement control drive motor (31) according to the height spacing H to drive the lifting material blocking push-back seat (37) and the upper push-back member (42) to rise to the raised position; S4: A plurality of pipes are loaded onto the feeding surface (11) from the rear side of the feeding surface (11), and the pipes are transported forward until they are blocked by the blocking and pushing surface (371); S5: the first displacement controller drives the first displacement control driving motor (21) according to the second width interval W2 to drive the lifting material blocking and pushing back seat (37) to move to the material pushing position, and the lifting material blocking and pushing back seat (37) pushes the pipe on the feeding surface (11) backwards during the movement, and only a single pipe stays and passes through the second width interval W2; S6: The upper push-back driving mechanism (41) drives the upper push-back member (42) to move backward, and the upper push-back surface (421) extends backward to the rear side of the blocking push-back surface (371), and the upper push-back surface (421) pushes down the pipe stacked on the upper side, and only a single pipe remains in the pipe retention space (12); S7: The upper push-back driving mechanism (41) drives the upper push-back member (42) to move forward, and the upper push surface (421) retracts forward to the front of the material blocking push surface (371), and then the lifting displacement control driving motor (31) drives the lifting material blocking push-back seat (37) and the upper push-back member (42) to descend below the feeding surface (11), so that the single pipe resting on the feeding surface (11) is transported forward along the feeding surface (11).

8. The feeding method according to claim 7, characterized in that: The step S2 further includes calculating the first width spacing W1 according to the cross-sectional dimension parameters; In the step S3, the first displacement controller drives the first displacement control drive motor (21) according to the first width interval W1 to drive the lifting material blocking push-back seat (37) to move to the material blocking position.

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