Feeding mechanism and pipe feeding apparatus

Abstract

A feeding mechanism, comprising: a rack (10), wherein an extension arm (20) for conveying pipes is provided on the rack, and a rotating unit (100) and a material pushing unit (200) are respectively provided in the width direction of the extension arm and are fixedly connected by means of a first through shaft (30); and a motion conversion mechanism (300), oppositely mounted on the extension arm and the rack, and used for coordinating the motion of the rotating unit and the material pushing unit, wherein the motion conversion mechanism has a first state and a second state; when the motion conversion mechanism is in the first state, the extension arm is limited, and the rotating unit drives the material pushing unit to move by means of the first through shaft; and when the motion conversion mechanism is in the second state, the first through shaft is locked, and the rotating unit is not in linkage with the material pushing unit and only drives the extension arm to reciprocatingly move on the rack in the length direction of the extension arm. Also provided is a pipe feeding apparatus. The feeding mechanism uses the motion conversion mechanism to coordinate the motion of the material pushing unit and a feeding unit, and completes adjustment of two degrees of freedom by means of one driving shaft, so that the structure is simplified and distribution is more flexible.

Description

Feeding mechanism and pipe feeding device TECHNICAL FIELD

[0001] The present application relates to the field of pipe cutting and feeding, in particular to a feeding mechanism and a pipe feeding device using the feeding mechanism. BACKGROUND

[0002] With the maturity of laser cutting technology and the popularity of laser cutting equipment, more and more pipes are cut by laser cutting equipment, which brings great convenience to pipe cutting. However, the feeding machine of the pipe cutting equipment with horizontally installed chuck is generally divided into two parts. The first part is a pipe rack, and the second part is a pipe feeding arm. The two parts are driven by two sets of transmission systems respectively. One set of transmission system drives the chain on the feeding rack to drive the pipe to advance and approach the main machine. The second set of transmission system drives the pipe extension arm to extend and retract to control the extension and retraction of the extension arm. The two parts cannot be shared and the mechanical structure is complex. Moreover, due to the different lengths of raw materials, the existing mechanism cannot easily feed by length, which greatly increases the processing cost and labor cost and causes great waste of production cost. TECHNICAL SOLUTION

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a feeding mechanism which uses a motion conversion mechanism to coordinate the motion of the pushing unit and the feeding unit, realizes the adjustment of two degrees of freedom by one driving shaft, simplifies the structure, makes the distribution more flexible, and reduces the manufacturing cost and maintenance cost.

[0004] According to the feeding mechanism of the first aspect of the present application, the feeding mechanism comprises a rack, and further comprises:

[0005] An extension arm is installed on the rack for conveying pipes. The extension arm is provided with a rotating unit and a pushing unit in the width direction respectively, and the two units are fixedly connected through a first through shaft;

[0006] A motion conversion mechanism is installed on the extension arm and the rack for coordinating the motion of the rotating unit and the pushing unit;

[0007] The motion conversion mechanism has a first state and a second state. When the motion conversion mechanism is in the first state, the extension arm is limited, and the rotating unit drives the pushing unit through the first through shaft. When the motion conversion mechanism is in the second state, the first through shaft is clamped, the rotating unit is not linked with the pushing unit, and only drives the extension arm to make reciprocating motion along its length on the rack.

[0008] According to some embodiments of the present application, the motion conversion mechanism comprises a brake clamping assembly and an extension arm limiting assembly; the brake clamping assembly and the extension arm limiting assembly are in interlocking state.

[0009] According to some embodiments of the present application, the brake holding assembly is composed of a first cylinder and a brake lever, the brake lever is located inside the extension arm and below the first through shaft, and the first cylinder is located at the bottom of the extension arm opposite to the brake lever.

[0010] According to some embodiments of the present application, the extension arm limiting assembly is composed of a second cylinder and a clamping piece, the clamping piece is located at one end of the top of the rack, and the second cylinder is located inside the extension arm and opposite to the clamping piece.

[0011] According to some embodiments of the present application, the rotating unit includes a T-shaped transmission belt and a driving shaft, and the T-shaped transmission belt is connected with the driving shaft through a gear.

[0012] According to some embodiments of the present application, the pushing unit includes a dragging chain, and a pushing block is arranged on the dragging chain for dragging the pipe; and a mounting hole is arranged on the pushing block for mounting a screw for sensing the position of the pipe.

[0013] According to some embodiments of the present application, the other end of the extension arm is provided with a feeding area, and a pipe in-place sensor is arranged in the feeding area.

[0014] According to some embodiments of the present application, the bottom of the extension arm is slidingly connected to the top of the rack.

[0015] According to the pipe feeding device of the second aspect of the embodiments of the present application, the feeding mechanism is installed on the rack, and the rack is provided with multiple groups in parallel, the spacing between the groups is adjustable, and the feeding mechanism is driven to move in two degrees of freedom by a transmission system.

[0016] Further, in the first state, the transmission system drives the rotating unit through the driving shaft to drive the pushing unit in linkage, and in the second state, the transmission system drives the extension arm to move back and forth along the length of the extension arm on the rack in the direction. Advantages

[0017] Compared with the prior art, the present application has the following advantages and positive effects:

[0018] 1. The rotating unit and the pushing unit of the feeding mechanism of the present application are distributed on both sides of the extension arm in the width direction of the extension arm, connected through the first through shaft, the movement conversion mechanism, and relatively installed on the extension arm and the rack, for coordinating the movement of the rotating unit and the pushing unit, realizing the adjustment of two degrees of freedom through one driving shaft, simplifying the structure, making the distribution more flexible, and reducing the manufacturing cost and maintenance cost.

[0019] 2. The pipe feeding device of the present application drives a power chain by a motor, the system can control each extension arm to extend separately, and each brake holding assembly and extension arm limiting assembly is controlled by an electric valve separately, so that the feeding by length is realized without adding cost and structure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a schematic view of the feeding mechanism of the first aspect of the present application;

[0021] Fig. 2 is a schematic view of the motion conversion mechanism of the feeding mechanism of the first aspect of the present application;

[0022] Fig. 3 is a schematic view of the rotating unit of the feeding mechanism of the first aspect of the present application;

[0023] Fig. 4 is a schematic view of the pushing unit of the feeding mechanism of the first aspect of the present application;

[0024] Fig. 5 is a schematic view of the sensing area of the feeding mechanism of the first aspect of the present application;

[0025] Fig. 6 is a schematic view of the motion trajectory of the extension arm driven by the T-shaped transmission belt of the feeding mechanism of the first aspect of the present application;

[0026] Fig. 7 is a schematic view of the pipe feeding device of the second aspect of the present application.

[0027] LEGEND:

[0028] 1, first group of signals; 2, second group of signals; 3, third group of signals;

[0029] 10, rack; 20, extension arm; 30, first through shaft; 40, drive shaft; 50, gear; 60, feeding area; 61, pipe in-place sensor; 62, pipe contact arm; 70, second through shaft; 100, rotating unit; 110, T-shaped transmission belt; 120, first positioning wheel; 130, second positioning wheel; 200, pushing unit; 210, dragging chain; 211, pushing block; 212, mounting hole; 213, feeding block sensor; 300, motion conversion mechanism; 311, first air cylinder; 312, brake lever; 321, second air cylinder; 322, clamping part; 323, limiting shaft. BEST MODE FOR CARRYING OUT THE INVENTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the present application, one or more is meant to be one or more, more than two is meant to be two or more, greater than, less than, more than and the like are understood to exclude the number itself, above, below, within and the like are understood to include the number itself. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0033] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0034] The feeding mechanism and the pipe feeding device according to the embodiments of the present application will be described below with reference to FIGS. 1-7.

[0035] As shown in FIGS. 1-7, the feeding mechanism according to the first aspect embodiment of the present application comprises a rack 10, further comprises an extension arm 20 installed on the rack 10 for conveying pipe materials; a rotating unit 100 and a pushing unit 200 are respectively arranged along the width direction of the extension arm 20, and the two are fixedly connected through a first through shaft 30;

[0036] A motion conversion mechanism 300 is relatively installed on the extension arm 20 and the rack 10, for coordinating the motion of the rotating unit 100 and the pushing unit 200; wherein the motion conversion mechanism 300 has a first state and a second state, when the motion conversion mechanism 300 is in the first state, the extension arm 20 is limited, the rotating unit 100 drives the pushing unit 200 linkage through the first through shaft 30; when the motion conversion mechanism 300 is in the second state, the first through shaft 30 is clamped, the rotating unit 100 is not linked with the pushing unit 200, and only drives the extension arm 20 to make reciprocating motion along its length on the rack 10 in the direction.

[0037] The rotating unit 100 and the pushing unit 200 of the feeding mechanism are distributed on both sides of the width direction of the extension arm 20 and are connected through the first through shaft 30. The rotating unit 100 comprises a driving shaft 40, a first positioning wheel 120, a second positioning wheel 130, the first through shaft 30, the second through shaft 70 and a T-shaped transmission belt 110. The vertical end of the T-shaped transmission belt 110 is provided with the driving shaft 40. The other end of the T-shaped transmission belt 110 in the horizontal direction is provided with the first positioning wheel 120 and the second positioning wheel 130. The two ends of the T-shaped transmission belt 110 in the horizontal direction are respectively provided with the first through shaft 30 and the second through shaft 70. The driving shaft 40 drives the T-shaped transmission belt 110 to rotate. The T-shaped transmission belt 110 drives the first through shaft 30 and the second through shaft 70 through the gear, and simultaneously drives the dragging chain 210 on the opposite side.

[0038] Specifically, the driving shaft 40 is driven by a motor. The driving shaft 40 is connected with the T-shaped transmission belt 110 through the gear 50. The T-shaped transmission belt 110 drives the first positioning wheel 120, the second positioning wheel 130, the first through shaft 30 and the second through shaft 70 to rotate. The first through shaft 30 and the second through shaft 70 drive the dragging chain 210 on the opposite side to rotate. The dragging chain 210 is provided with the pushing block 211 at intervals. The pipe is placed on the dragging chain 210 between the pushing blocks 211. The pipe is pushed to the feeding area 60 along with the dragging chain 210 and the pushing block 211. The two degrees of freedom are adjusted through one driving shaft 40, so that the structure is simplified, the distribution is more flexible, the manufacturing cost and the maintenance cost are reduced, the T-shaped transmission belt 110 can be a chain or a synchronous belt, and the above-mentioned transmission means can also be realized in the case of light load. The technical personnel in the technical field can reasonably select the technical means according to the specific content of the technical scheme.

[0039] The pushing unit 200 further comprises a material returning block sensor 213. The material returning block sensor 213 is arranged on the extension arm 20 and is located in the dragging chain 210 and on one side of the horizontal direction of the second through shaft 70. The pushing block 211 is provided with a mounting hole 212. The mounting hole 212 can be used for mounting a long screw, so as to be inducted by the travel switch on the material returning block sensor 213, so that the dragging chain 210 stops rotating, the pipe enters the feeding area 60, and one side of the feeding area 60 is provided with a pipe in-place inductor 61. The pipe in-place inductor 61 is arranged on the extension arm 20 and is located outside the T-shaped transmission belt 110 and on one side of the horizontal direction of the second through shaft 70. The pipe in-place inductor 61 is provided with an elastic device. The elastic device is provided with a pipe contact arm 62. The pipe contact arm 62 is arranged at a certain slope and is partially higher than the feeding area 60. After the pipe enters the feeding area 60, the pipe contact arm 62 is pressed, and the pressure is inducted by the pipe in-place inductor 61 through the elastic device to induct that the pipe is in place. The system controls the dragging chain 210 to retreat by 80mm safe distance.

[0040] As shown in Figure 2, the motion conversion mechanism 300 includes a brake clamping assembly and an extension arm limiting assembly; the brake clamping assembly and the extension arm limiting assembly are in interlocking state; the brake clamping assembly is composed of a first cylinder 311 and a brake lever 312, the brake lever 312 is located in the extension arm 20, one end is rotatably connected with the inner wall of the extension arm through a roller, the other end is located above the first cylinder 311, the middle top of the brake lever 312 is provided with a groove, and rubber can be arranged in the groove to increase the friction with the first through shaft 30, the brake clamping assembly includes but is not limited to the above structure, the first cylinder 311 is located on the bottom plate of the extension arm 20 and is oppositely arranged with the brake lever 312; the extension arm limiting assembly is composed of a second cylinder 321 and a clamping piece 322, the clamping piece 322 is located at one end of the top of the rack 10, and the second cylinder 321 is located in the extension arm 20 and is oppositely arranged with the clamping piece 322.

[0041] The first function of the present application drags the raw material to a specific position: the first cylinder 311 is retracted, the first through shaft 30 is separated from the brake lever 312, the brake function of the brake clamping assembly is cancelled, the second cylinder 321 extends the limiting shaft 323 into the clamping piece 322 and is clamped, the extension arm cannot move, and the position is determined. The other end of the extension arm 20 opposite to the motion conversion mechanism 300 is provided with a feeding area 60, one side of the feeding area 60 is provided with a pipe material in place sensor 61; the pushing unit 200 rotates, and the pipe material is pushed to the feeding area 60 by the pushing block 211, so that the pipe material is pressed to the pipe material in place sensor 61, that is, the system is informed that the pipe material is in place.

[0042] As shown in Figure 6, the second function of the extension arm feeding principle is explained: the first cylinder 311 extends, the first through shaft 30 is braked with the brake lever 312, the second cylinder 321 retracts the limiting shaft 323, the extension arm 20 can move, the driving shaft 40 drives the T-shaped transmission belt 110, the bottom of the extension arm 20 is slidably connected along the top of the rack 10, drives the extension arm 20 to extend, and the chain changes form when the extension arm 20 moves, the upper part of the chain remains indefinite, the lower part becomes longer in the movement direction and becomes shorter in the direction away from the movement direction, thereby driving the extension arm to move. Embodiment of the present application

[0043] As shown in Figure 7, the pipe material feeding device according to the second aspect of the present application comprises a feeding mechanism, the feeding mechanism is installed on the rack 10, the rack 10 is provided with multiple groups in parallel, the distance between the multiple groups is adjustable, and the feeding mechanism is driven to move in two degrees of freedom through a set of transmission system.

[0044] According to the pipe feeding device of the second aspect of the present application, in the first state, the transmission system drives the rotating unit 100 through the driving shaft 40 to drive the pushing unit 200 to move in linkage, and in the second state, the transmission system drives the extension arm 20 to move back and forth along the length of the extension arm 20 in the direction of the frame 10 through the driving shaft 40.

[0045] Since the pipe must have two supporting points, that is, two sets of conveying devices are needed to complete, the current pipe conveying device needs two mechanisms to drag and convey the pipe, so at least four mechanisms are needed to convey one pipe, therefore, the current technology has certain requirements on the length of the pipe to meet the requirement of two supporting points, while the feeding mechanism of the present application integrally completes the requirements of dragging and conveying the pipe, the two feeding mechanisms are combined together with small width, and the distance between the two feeding mechanisms determines the minimum length of the pipe that can be cut. Therefore, compared with the current device, the pipe feeding device of the present application drives one power chain through one motor, the system can control each extension arm to extend separately, at the same time, each brake holding assembly and extension arm limiting assembly are controlled by an electric valve separately, through the motion conversion mechanism 300, the extension and retraction of any extension arm 20 can be realized, and any combination of several extension arms can also be realized, without adding cost and structure, not only the minimum requirement of feeding can be met, but also length feeding can be realized.

[0046] In specific embodiments, the first group of signals can control up to 6 meters of material, the first group of signals and the second group of signals can control up to 9 meters of material simultaneously, the first group of signals, the second group of signals and the third group of signals can control up to 12 meters of material simultaneously, and any combination of several extension arms can also be realized.

[0047] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above is only the preferred embodiment of the present application, and is not intended to limit the other forms of the present application, and any skilled person in the art can use the disclosed technical content to make changes or modifications to equivalent embodiments with equivalent changes applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical essence of the present application still falls within the protection scope of the technical solution of the present application. Industrial applicability

[0049] The rotating unit and the pushing unit of the feeding mechanism of the present application are distributed on both sides of the width direction of the extension arm, connected through the first through shaft, the motion conversion mechanism, and are relatively installed on the extension arm and the rack, used for coordinating the motion of the rotating unit and the pushing unit, realizing the adjustment of two degrees of freedom through one driving shaft, simplifying the structure, making the distribution more flexible, and reducing the manufacturing cost and the maintenance cost.

Claims

1. A loading mechanism comprising a frame (10), characterized in that, Also include: The extension arm (20) is installed on the rack (10) for conveying pipe; The width direction of the extension arm (20) is respectively provided with a rotating unit (100) and a pushing unit (200), and the two are fixedly connected through a first through shaft (30); The motion conversion mechanism (300) is relatively installed on the extension arm (20) and the rack (10), for coordinating the motion of the rotating unit (100) and the pushing unit (200); The motion conversion mechanism (300) includes a brake clamping assembly and an extension arm limiting assembly; The brake clamping assembly and the extension arm limiting assembly are in interlocking state; The brake clamping assembly is composed of a first cylinder (311) and a brake lever (312), the brake lever is located in the extension arm (20) and below the first through shaft (30), and the first cylinder (311) is located at the bottom of the extension arm (20) and opposite to the brake lever (312); The extension arm limiting assembly is composed of a second cylinder (321), a clamping piece (322) and a limiting shaft (323), the clamping piece (322) is located at one end of the top of the rack (10), and the second cylinder (321) is located in the extension arm (20) and opposite to the clamping piece (322); Wherein, the motion conversion mechanism (300) has a first state and a second state, when the motion conversion mechanism (300) is in the first state, the extension arm (20) is limited, and the rotating unit (100) drives the pushing unit (200) linkage through the first through shaft (30); When the motion conversion mechanism (300) is in the second state, the first through shaft (30) is clamped, the rotating unit (100) is not linked with the pushing unit (200), and only drives the extension arm (20) to make reciprocating motion along its length on the rack (10) The rotating unit (100) includes a T-shaped transmission belt (110) and a driving shaft (40), and the T-shaped transmission belt (110) is connected with the driving shaft (40) through a gear (50).

2. The feeding mechanism according to claim 1, wherein: The pushing unit (200) includes a dragging chain (210), and the pushing unit (200) is provided with a pushing block (211) on the dragging chain (210) for pipe dragging; The pushing block (211) is provided with a mounting hole (212) for installing screws and sensing pipe position.

3. The feeding mechanism according to claim 1, wherein: The other end of the extension arm (20) is provided with a feeding area (60), and one side of the feeding area (60) is provided with a pipe in place sensor (61).

4. The feeding mechanism according to claim 1, wherein: The bottom of the extension arm (20) is slidably connected along the top of the rack (10).

5. The feeding mechanism of claim 1, wherein: Include:

6. A pipe feeding device characterized by comprising: The feeding mechanism is the feeding mechanism of any one of claims 1 to 5; The feeding mechanism is installed on the rack (10), and the rack (10) is provided with multiple groups in parallel, the distance between which is adjustable, and the feeding mechanism is driven to move in two degrees of freedom through a set of transmission system. ​ 7. The pipe loading apparatus of claim 6, wherein: In the first state, the transmission system drives the rotating unit (100) through the drive shaft (40) to drive the pushing unit (200) linkage, and in the second state, the transmission system drives the extending arm (20) to make reciprocating motion along the length thereof in the direction of the rack (10) through the drive shaft (40).

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