CN117283353A - Cam type feeding mechanism and automatic bar feeder - Google Patents

Abstract

The application relates to a cam type feeding mechanism and an automatic bar feeder, wherein a cam rotating shaft is rotatably arranged on a rack, and a third cam is coaxially and fixedly connected on a second cam; a plurality of material supporting frames for feeding are fixedly connected to the first rotating shaft; the roller on the first connecting rod is elastically pressed against the third cam; the rotatable second pivot that is provided with in the frame and is on a parallel with first pivot is provided with the rocking arm in the second pivot, is provided with the rod conveyer trough along Y axle direction in the frame of automatic rod feeder, is provided with the push rod on the rod conveyer trough, and the push rod is used for pushing away the material along the length direction removal of rod conveyer trough, and the push rod can overturn around Y axle direction and be used for keeping away the position. According to the cam type feeding mechanism, the feeding action of the material supporting frame and the avoiding action of the push rod are synchronously driven by the cam driving mechanism, so that the feeding efficiency is improved; the push rod is arranged to be a flip type avoidance position, so that the overall length of the feeder is reduced, and the applicability of the feeder is improved.

Description

Cam type feeding mechanism and automatic bar feeder

Technical Field

The application belongs to the technical field of bar feeders, and particularly relates to a cam type feeding mechanism and an automatic bar feeder.

Background

The automatic bar feeder is a feeding machine which is matched with equipment capable of continuously and circularly processing bar materials to realize automatic feeding, so that the processing efficiency and the automation degree of the equipment are improved. Most of the existing automatic bar feeders adopt a sliding blanking mode, namely bars enter a feeding station of the feeder in a sliding mode, and the situation of machine clamping caused by stripping is easy to occur; secondly, the push rod of the existing bar feeder often adopts axial movement arrangement, so that the whole length and the size of the bar feeder are large, a large installation environment is needed, and the applicability is poor.

Disclosure of Invention

The invention aims to solve the technical problems that: in order to solve the defects in the prior art, the cam type feeding mechanism and the automatic bar feeder are provided, at least one of the following technical effects is realized, firstly, bar feeding and pushing bar avoiding are synchronously performed by arranging the linkage type cam feeding mechanism and the flip type pushing bar avoiding mechanism, and the feeding efficiency is improved; and secondly, the overall length of the feeder is reduced, and the applicability of the feeder is improved.

The technical scheme adopted for solving the technical problems is as follows:

cam type feed mechanism includes:

the device comprises a rack, wherein a cam rotating shaft is rotatably arranged on the rack, the cam rotating shaft comprises a first rotating shaft, a first cam and a second cam, the first cam and the second cam are arranged at two ends of the rotating shaft, and a third cam is coaxially and fixedly connected to the second cam;

a plurality of material supporting frames for feeding are fixedly connected to the first rotating shaft;

the turnover mechanism comprises a prismatic shaft which is parallel to the first rotating shaft, a first connecting rod is rotatably connected to the prismatic shaft, a roller is rotatably arranged on the first connecting rod, and the roller on the first connecting rod is elastically pressed against the third cam;

the rotary type rocker arm is characterized in that a second rotating shaft parallel to the first rotating shaft is rotatably arranged on the frame, a second connecting rod is hinged to the upper end of the first connecting rod and used for driving the second rotating shaft to rotate, and a rocker arm is arranged on the second rotating shaft.

Preferably, in the cam type feeding mechanism of the present invention, the second connecting rod is provided as an elastic floating member, and the roller for pushing the first connecting rod is elastically abutted against the third cam.

Preferably, in the cam type feeding mechanism, a sleeve is rotatably sleeved on the first rotating shaft, an elastic telescopic rod is fixedly connected to the sleeve in the radial direction, and the lower end portion of the elastic telescopic rod is hinged to the frame.

The automatic bar feeder is provided with a cam type feeding mechanism, a bar conveying groove along the Y-axis direction is formed in the rack, a push rod is arranged on the bar conveying groove, the push rod moves along the length direction of the bar conveying groove and is used for pushing materials, and the push rod can be overturned around the Y-axis direction and is used for avoiding;

the frame is provided with a linear driving mechanism which is used for driving the push rod to move along the length direction of the bar conveying groove and directly pushing the bar to move to the discharge end of the bar conveying groove;

the storage bin, the setting of the adjustable inclination of storage bin is in the frame, hold in the palm the work or material rest setting between storage bin lower extreme discharge gate and rod conveyer trough, hold in the palm the work or material rest and be used for carrying the rod on the storage bin in the rod conveyer trough, be provided with on the bottom plate of storage bin lower extreme discharge gate and rod conveyer trough and be used for holding in the palm the clearance groove that the work or material rest passed through.

Preferably, the automatic bar feeder provided by the invention is characterized in that the linear driving mechanism comprises a guide rail structure and a sliding block assembly, wherein the guide rail structure is arranged along the length direction of the bar conveying groove, the sliding block assembly is arranged on the guide rail structure in a sliding manner, and a synchronous belt driving device for driving the sliding block assembly to slide on the guide rail structure is further arranged between the guide rail structure and the sliding block assembly.

Preferably, the automatic bar feeder is characterized in that the guide rail structure is a U-shaped section, arc grooves are formed in two inner walls of the U-shaped section, guide rods in the length direction are arranged in the arc grooves, and rollers are arranged between the two guide rods in a rolling mode.

Preferably, the automatic bar feeder provided by the invention comprises a sliding plate, wherein the rotating shafts of the two rollers are rotatably connected to the sliding plate, and one end of the sliding plate, which is close to the push rod, is fixedly connected with a first top plate for pushing the push rod or bar stock.

Preferably, the automatic bar feeder comprises a first rocker arm arranged at the discharge end of a bar conveying groove and a second rocker arm far away from the discharge end of the bar conveying groove, wherein a guide block is fixedly arranged on the first rocker arm, a guide hole for guiding a push rod to slide is formed in the guide block, the push rod is slidably inserted in the guide hole, a limiting block is fixedly connected onto the second rocker arm, and a pin hole is formed in the limiting block.

Preferably, one end of the push rod, which is close to the second rocker arm, is provided with a push rod connecting assembly, the push rod connecting assembly comprises a second top plate fixedly connected with the push rod, the side wall of the upper end part of the second top plate is fixedly connected with a connecting block, the bottom surface of the connecting block is provided with a limiting groove perpendicular to the axial direction of the push rod, the upper surface of the sliding plate is fixedly provided with a positioning strip used for being clamped in the limiting groove, and the end surface, far away from the second top plate, of the connecting block is fixedly connected with a limiting pin used for being inserted in a pin hole on a limiting block.

Preferably, in the automatic bar feeder provided by the invention, the end part of the connecting block, which is far away from the second top plate, is further provided with a guide round block, the upper surface of the sliding plate is fixedly provided with a positioning block, and the positioning block is provided with a guide clamping groove for guiding and sleeving the guide round block.

The beneficial effects of the invention are as follows:

(1) According to the cam type feeding mechanism, the feeding action of the material supporting frame and the avoiding action of the push rod are synchronously driven by the cam driving mechanism, so that the action mechanism is simplified, and the feeding efficiency is improved;

(2) Compared with the traditional axial arrangement, the push rod is arranged to be a flip type avoidance position, so that the overall length of the feeder is reduced, and the applicability of the feeder is improved.

Drawings

The technical scheme of the application is further described below with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of the internal structure of a bar feeder according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cam type feeding mechanism in an embodiment of the present application;

FIG. 3 is a schematic diagram of the front view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the structure at A-A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the structure at B-B in FIG. 3;

FIG. 6 is a schematic cross-sectional view of a push rod connection assembly according to an embodiment of the present application;

FIG. 7 is a schematic illustration of a slider assembly configuration according to an embodiment of the present application;

fig. 8 is a schematic view of the external structure of the bar feeder according to the embodiment of the present application.

The reference numerals in the figures are:

the device comprises a frame 10, a cam rotating shaft 11, a turnover mechanism 12, a bar conveying groove 21, a push rod 22, a material supporting frame 23, a linear driving mechanism 24, a guide rail structure 25, a sliding block assembly 26, a synchronous belt driving device 27, a push rod connecting assembly 28 and a storage bin 30;

sleeve 111, elastic telescopic rod 112, first rotation shaft 113, first cam 114, second cam 115, third cam 116, prismatic shaft 121, first link 122, second rotation shaft 123, second link 124, rocker 125, hinge mount 126, slide 261, first top plate 262, positioning bar 263, second top plate 281, connecting block 282, limiting pin 283, positioning block 285;

a first rocker arm 1251; the second rocker arm 1252, the guide block 1253, and the stopper 1254.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments.

Examples

The embodiment provides a cam type feeding mechanism, referring to fig. 1-5, the structure includes:

the machine frame 10, install the cam pivot 11 rotatably in the frame 10, the cam pivot 11 includes first pivot 113, first cam 114 and second cam 115 rotatable install at the frame 10, the both ends of first pivot 113 are rotatable respectively to install at first cam 114 and second cam 115, fixedly connected with rectangle mounting bracket on the first pivot 113, rectangle mounting bracket parcel is in the first pivot 113 outside, fixedly connected with is used for the support work or material rest 23 of pay-off on rectangle mounting bracket, support work or material rest 23 upper end is provided with the V type groove that is used for the location to load the rod.

Preferably, in the cam feeding mechanism of the present embodiment, a first driving motor and a sprocket chain transmission mechanism are further disposed on the frame 10, a small sprocket of the sprocket chain transmission mechanism is fixedly connected with a power output shaft of the first driving motor, a large sprocket of the sprocket chain transmission mechanism is fixedly connected with the first cam 114 coaxially, and the first driving motor drives the cam rotating shaft 11 to rotate through the transmission of the sprocket chain transmission mechanism.

Preferably, in the cam feeding mechanism of this embodiment, the first rotating shaft 113 is rotatably sleeved with the sleeve 111, the bottom of the rectangular mounting frame is provided with the avoidance groove, the sleeve 111 is radially and fixedly connected with the elastic telescopic rod 112, the lower end part of the elastic telescopic rod 112 penetrates through the avoidance groove to be hinged on the frame 10, and when the first rotating shaft 113 rotates, the V-shaped groove of the material supporting frame 23 is always upward under the limiting action of the elastic telescopic rod 112 and is used for stably conveying bars.

Preferably, the cam type feeding mechanism of the present embodiment further includes a turnover mechanism 12, the turnover mechanism 12 includes a prismatic shaft 121 disposed parallel to the first rotation axis 113, a first link 122 connected in a zigzag manner is rotatably disposed on the prismatic shaft 121, a third cam 116 is fixedly connected coaxially on the second cam 115, a roller is rotatably disposed on the first link 122, the roller on the first link 122 is pressed against the third cam 116, a tension spring is disposed between the lower end portion of the first link 122 and the frame 10, the tension spring is used for pulling the roller of the first link 122 to abut against the third cam 116, a rotation axis mounting frame is disposed on the frame 10, a second rotation axis 123 parallel to the first rotation axis 113 is rotatably disposed on the rotation axis mounting frame, a hinge seat 126 is fixedly connected on the second rotation axis 123, a second link 124 is hinged on an upper end portion of the first link 122, an upper end portion of the second link 124 is hinged on the hinge seat 126, and a rocker 125 is fixedly connected on the second rotation axis 123.

Preferably, in the cam feeding mechanism of the present embodiment, an elastic floating member is disposed on the second connecting rod 124, specifically, the second connecting rod 124 includes a first supporting rod hinged to the hinge seat 126 and a second supporting rod hinged to the upper end portion of the first connecting rod 122, a waist hole is disposed on the first supporting rod, a pin inserted in the waist hole is disposed on the second supporting rod, telescopic connection of the first supporting rod and the second supporting rod is achieved, and a compression spring for pushing the first supporting rod and the second supporting rod to stretch is disposed between the first supporting rod and the second supporting rod.

In actual operation, the second cam 115 drives the third cam 116 to rotate synchronously, when the flange of the third cam 116 presses the roller of the first link 122, the first link 122 rotates around the prismatic shaft 121 to push the second link 124 to rotate upwards, so as to push the second rotating shaft 123 to rotate, the rocker arm 125 descends, and when the circumferential surface of the third cam 116 contacts with the roller of the first link 122, under the action of the tension spring, the first link 122 reversely rotates around the prismatic shaft 121 to pull the second link 124 to descend, so as to pull the second rotating shaft 123 to rotate, and the rocker arm 125 rotates upwards.

The embodiment also discloses an automatic bar feeder with cam type feed mechanism, referring to fig. 1-8, frame 10 includes support frame and workstation, is provided with the bar hole of Z axle direction on the support frame, and on the bar hole on the support frame was locked through the bolt at workstation both ends for adjust the height of workstation, adapt to the pay-off height of processing board.

The top of the workbench is provided with a V-shaped bar conveying groove 21 along the Y-axis direction, the bar conveying groove 21 is provided with a push rod 22, the push rod 22 moves along the length direction of the bar conveying groove 21 for pushing materials, the push rod 22 can overturn around the Y-axis direction for avoiding the situation when the bar is fed into the bar conveying groove 21, and the top of the workbench is also provided with a linear driving mechanism 24 for driving the push rod 22 to move along the length direction of the bar conveying groove 21 and directly pushing the bar to move to the discharge end of the bar conveying groove 21.

In this embodiment, the linear driving mechanism 24 includes a guide rail structure 25 disposed along the length direction of the bar conveying groove 21 and a slider assembly 26 slidably disposed on the guide rail structure 25, and a synchronous belt driving device 27 for driving the slider assembly 26 to slide on the guide rail structure 25 is further disposed between the guide rail structure 25 and the slider assembly 26, where the synchronous belt driving device 27 includes a servo motor and a synchronous belt transmission mechanism that acts parallel to the length direction of the bar conveying groove 21, and an active synchronous wheel of the synchronous belt transmission mechanism is fixedly connected with a power output shaft of the servo motor.

Preferably, in the automatic bar feeder of this embodiment, the guide rail structure 25 is set as a U-shaped section, two inner walls of the U-shaped section are provided with arc grooves, guide rods in the length direction are arranged in the arc grooves, two rollers are arranged between the two guide rods in parallel in a rolling manner, the sliding block assembly 26 comprises a sliding plate 261, rotating shafts of the two rollers are rotatably connected to the sliding plate 261, one point of a synchronous belt of the synchronous belt transmission mechanism is fixedly connected with the sliding plate 261, the sliding plate 261 is driven to slide on the guide rail structure 25, and one end, close to the push rod 22, of the sliding plate 261 is fixedly connected with a first top plate 262 for pushing the push rod or the bar.

Preferably, the rocker arm 125 of the automatic rod feeder of this embodiment includes a first rocker arm 1251 disposed at the discharge end of the rod conveying groove 21 and a second rocker arm 1252 far away from the discharge end of the rod conveying groove 21, a guide block 1253 is fixedly mounted on the first rocker arm 1251, a guide hole for guiding the push rod 22 to slide is formed in the guide block, the push rod 22 is slidably inserted into the guide hole, a limiting block 1254 is fixedly connected to the second rocker arm 1252, and a pin hole parallel to the push rod 22 in the length direction is formed in the limiting block 1254.

Preferably, in the automatic bar feeder of the present embodiment, a buffer spring is further disposed at one end of the U-shaped section near the second rocker 1252, and plays a role in limiting and buffering when the slide 261 moves to the end.

Preferably, one end of the push rod 22, which is close to the second rocker 1252, of the automatic rod feeder of the embodiment is provided with a push rod connecting assembly 28, the push rod connecting assembly 28 comprises a second top plate 281 fixedly connected with the push rod 22, a connecting block 282 is fixedly connected with the upper end portion side wall of the second top plate 281, a limiting groove perpendicular to the axial direction of the push rod 22 is formed in the bottom surface of the connecting block 282, a positioning strip 263 used for being clamped in the limiting groove is fixedly arranged on the upper surface of the sliding plate 261, and a limiting pin 283 used for being inserted in a pin hole on the limiting block is fixedly connected with the end surface, which is far away from the second top plate 281, of the connecting block 282.

Preferably, in the automatic bar feeder of this embodiment, a radial ball locking pin is disposed in a pin hole of the limiting block 1254, an annular groove is disposed on a cylindrical surface of the limiting pin 283, and when the limiting pin 283 is inserted into the pin hole of the limiting block 1254, the ball locking pin is clamped in the annular groove and locked and positioned.

Preferably, in the automatic bar feeder of this embodiment, a groove is further formed at an end portion of the connecting block 282 away from the second top plate 281, a guide round block is disposed in the groove, a positioning block 285 is fixedly disposed on the upper surface of the sliding plate 261, and a guide clamping groove for clamping the guide round block is disposed on the positioning block 285.

When the slider assembly 26 moves to the right end (one end close to the buffer spring), the end of the limiting pin 283 does not exceed the pin hole end face of the limiting block 1254, the second rocker arm 1252 rotates to be in contact with the connecting block 282, the slider assembly 26 continues to move to the right end, the guide round block is inserted into the guide clamping groove for guiding, the limiting pin 283 is inserted into the pin hole of the limiting block 1254, connection between the rod connecting assembly 28 and the second rocker arm 1252 is completed, at the moment, the second rocker arm 1252 is turned upwards, the push rod 22 can be driven to be turned upwards, and bar feeding position avoiding action is achieved.

The automatic bar feeder of this embodiment, still include the feed bin 30 that is used for loading many bars, the setting of feed bin 30 adjustable inclination is in frame 10, specifically, feed bin 30 articulates on the workstation, it has two bracing pieces to articulate in the bottom of feed bin 30, two bracing pieces lower extreme passes through the round bar to be connected, be provided with the cockscomb structure draw-in groove of direction of height on the lateral wall of workstation, place in the cockscomb structure draw-in groove of different co-altitude through adjusting the round bar, realize the inclination adjustment of feed bin 30, roll the discharge gate of lower extreme through the gravity of bar self.

The material supporting frame 23 is arranged between a discharge hole at the lower end of the storage bin 30 and the bar conveying groove 21, the material supporting frame 23 is used for conveying bars on the storage bin 30 into the bar conveying groove 21, and a clearance groove for the material supporting frame 23 to pass through is formed in a bottom plate of the bar conveying groove 21 and a discharge hole at the lower end of the storage bin 30.

The automatic bar feeder of the embodiment further comprises a flip cover arranged at the top of the frame 10 and used for safety protection and dust prevention.

It should be noted that the angle of the flange of the third cam 116 and the second cam 115 should be maintained as: when the material supporting frame 23 is positioned below the discharge hole of the storage bin 30, the circumferential surface of the third cam 116 is in contact with the roller of the first connecting rod 122, the rocker arm 125 is positioned below, deflection action does not occur, and when the material supporting frame 23 lifts a bar to move from the discharge hole of the storage bin 30 to the bar conveying groove 21, the flange of the third cam 116 is in contact with the roller of the first connecting rod 122, and the rocker arm 125 drives the push rod 22 to overturn upwards, so that bar feeding avoidance is realized.

The working process of the invention is as follows:

step one: a plurality of bars are placed in a storage bin 30 in a single layer, a first driving motor rotates to drive a cam rotating shaft 11 to rotate, a material supporting frame 23 is lifted upwards from the lower part of a discharge hole of the storage bin 30 to lift the bars from the storage bin 30 to move towards a bar conveying groove 21, meanwhile, a flange of a third cam 116 is contacted with a roller of a first connecting rod 122, a rocker 125 drives a push rod 22 to turn upwards to realize bar feeding avoidance, when the bars are placed in the bar conveying groove 21, the material supporting frame 23 deflects downwards to move to the lower part of the bar conveying groove 21, a servo motor is started, a first top plate 262 of a driving sliding block assembly 26 pushes the bars to move to the discharge end of the bar conveying groove 21 rapidly, and then the sliding block assembly 26 returns to the original position;

step two: the cam rotating shaft 11 continues to rotate until the flange of the third cam 116 contacts with the roller of the first link 122, the cam rotating shaft 11 stops rotating, the circumferential surface of the third cam 116 contacts with the roller of the first link 122, the rocker arm 125 is positioned below, and the push rod contacts with the bar conveying groove 21;

step three: the servo motor is started again, the sliding block assembly 26 is driven to move close to one end of the first rocker arm 1251, the push rod connecting assembly 28 is separated from the second rocker arm 1252, and the push rod 22 continuously pushes the bar forwards to realize feeding action;

step four: when feeding is completed, the slider assembly 26 moves to the right end (one end close to the buffer spring), the end of the limiting pin 283 does not exceed the pin hole end surface of the limiting block 1254, the guide round block is inserted into the guide clamping groove for guiding, the limiting pin 283 is inserted into the pin hole of the limiting block 1254, and connection of the rod connecting assembly 28 and the second rocker arm 1252 is completed;

repeating the steps one to four to realize the cyclic feeding action.

With the above-described preferred embodiments according to the present application as a teaching, the related workers can make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.

Claims (10)

1. Cam-type feed mechanism, its characterized in that includes:

the device comprises a rack (10), wherein a cam rotating shaft (11) is rotatably arranged on the rack (10), the cam rotating shaft (11) comprises a first rotating shaft (113), and a first cam (114) and a second cam (115) which are arranged at two ends of the rotating shaft, and a third cam (116) is coaxially and fixedly connected to the second cam (115);

a plurality of material supporting frames (23) for feeding are fixedly connected to the first rotating shaft (113);

the turnover mechanism (12) comprises a prismatic shaft (121) which is parallel to the first rotating shaft (113), a first connecting rod (122) is rotatably connected to the prismatic shaft (121), a roller is rotatably arranged on the first connecting rod (122), and the roller on the first connecting rod (122) is elastically pressed against a third cam (116);

the rotary machine is characterized in that a second rotating shaft (123) parallel to the first rotating shaft (113) is rotatably arranged on the frame (10), a second connecting rod (124) is hinged to the upper end of the first connecting rod (122), the second connecting rod (124) is used for driving the second rotating shaft (123) to rotate, and a rocker arm (125) is arranged on the second rotating shaft (123).

2. The cam type feeding mechanism according to claim 1, wherein the second connecting rod (124) is provided as an elastic floating member for pushing the roller of the first connecting rod (122) to elastically abut against the third cam (116).

3. The cam type feeding mechanism according to claim 2, wherein a sleeve (111) is rotatably sleeved on the first rotating shaft (113), an elastic telescopic rod (112) is fixedly connected to the sleeve (111) in the radial direction, and the lower end portion of the elastic telescopic rod (112) is hinged to the frame (10).

4. An automatic bar feeder with a cam type feeding mechanism according to any one of claims 1-3, characterized in that the frame (10) is provided with a bar conveying groove (21) along the Y-axis direction, the bar conveying groove (21) is provided with a push rod (22), the push rod (22) moves along the length direction of the bar conveying groove (21) for pushing, and the push rod (22) can turn around the Y-axis direction for avoiding;

the machine frame (10) is provided with a linear driving mechanism (24), and the linear driving mechanism (24) is used for driving the push rod (22) to move along the length direction of the bar conveying groove (21) and directly pushing the bar to move to the discharge end of the bar conveying groove (21);

the automatic feeding device comprises a storage bin (30), wherein the storage bin (30) is arranged on a frame (10) in an adjustable inclination mode, a material supporting frame (23) is arranged between a discharge hole at the lower end of the storage bin (30) and a bar conveying groove (21), the material supporting frame (23) is used for conveying bars on the storage bin (30) into the bar conveying groove (21), and a position avoiding groove used for the material supporting frame (23) to pass through is formed in a bottom plate of the discharge hole at the lower end of the storage bin (30) and the bar conveying groove (21).

5. An automatic bar feeder according to claim 4, characterized in that the linear driving mechanism (24) comprises a guide rail structure (25) along the length direction of the bar conveying trough (21) and a slide block assembly (26) slidably arranged on the guide rail structure (25), and a synchronous belt driving device (27) for driving the slide block assembly (26) to slide on the guide rail structure (25) is further arranged between the guide rail structure (25) and the slide block assembly (26).

6. An automatic bar feeder according to claim 5, characterized in that the guide rail structure (25) is provided as a U-shaped profile, arc-shaped grooves are provided on both inner walls of the U-shaped profile, guide rods in the length direction are provided in the arc-shaped grooves, and rollers are provided between the two guide rods in a rolling manner.

7. The automatic bar feeder according to claim 6, wherein the slide block assembly (26) comprises a slide plate (261), the rotating shafts of the two rollers are rotatably connected to the slide plate (261), and a first top plate (262) for pushing the ejector rod or bar is fixedly connected to one end of the slide plate (261) close to the push rod (22).

8. The automatic bar feeder according to claim 7, wherein the rocker arm (125) comprises a first rocker arm (1251) arranged at the discharge end of the bar conveying groove (21) and a second rocker arm (1252) far away from the discharge end of the bar conveying groove (21), a guide block is fixedly installed on the first rocker arm (1251), a guide hole for guiding the push rod (22) to slide is formed in the guide hole, a limiting block is fixedly connected to the second rocker arm (1252), and a pin hole is formed in the limiting block.

9. The automatic bar feeder according to any one of claims 5-8, wherein a push rod connecting assembly (28) is arranged at one end of the push rod (22) close to the second rocker arm (1252), the push rod connecting assembly (28) comprises a second top plate (281) fixedly connected with the push rod (22), a connecting block (282) is fixedly connected to the side wall of the upper end part of the second top plate (281), a limiting groove perpendicular to the axial direction of the push rod (22) is arranged on the bottom surface of the connecting block (282), a positioning strip (263) used for being clamped in the limiting groove is fixedly arranged on the upper surface of the sliding plate (261), and a limiting pin (283) used for being inserted in a pin hole on the limiting block is fixedly connected to the end surface of the connecting block (282) far away from the second top plate (281).

10. The automatic bar feeder according to claim 9, wherein a guide round block is further arranged at the end part of the connecting block (282) far away from the second top plate (281), a positioning block (285) is fixedly arranged on the upper surface of the sliding plate (261), and a guide clamping groove for guiding the sleeved guide round block is formed in the positioning block (285).