CN120117455A

CN120117455A - Automatic feeding method

Info

Publication number: CN120117455A
Application number: CN202411667777.3A
Authority: CN
Inventors: 李学龙; 沈维丰; 杨仁江
Original assignee: Suzhou Ur Intelligent Technology Co ltd
Current assignee: Suzhou Ur Intelligent Technology Co ltd
Priority date: 2024-11-21
Filing date: 2024-11-21
Publication date: 2025-06-10

Abstract

The present invention discloses an automatic feeding method, and the specific working steps are as follows: step one: the first material shaft is located at the working position, the first gear of the first material shaft is meshed with the second gear, the driving motor drives the first material shaft to rotate to perform the feeding operation, and the second material shaft is located at the feeding port; step two: the material head of the second material shaft is clamped at the head material clamping and translation mechanism; step three: when the tail material detection mechanism detects that the first material shaft is unwound to the tail material, the head material clamping and translation mechanism drives the head material of the second roll material in the second material shaft to move forward, and at the same time, the material pushing roll mechanism pushes the second material shaft to the working position, and the first gear of the second material shaft is meshed with the second gear; step four: the second material shaft pushes the first material shaft out to the tail end of the unwinding frame. The method can realize automatic non-stop feeding by setting the material pushing roll mechanism, the head material clamping and translation mechanism and the limiting mechanism, thereby reducing manual work while also improving the production efficiency of the product.

Description

Automatic feeding method

Technical Field

The invention relates to the field of cutting equipment, in particular to an automatic feeding method.

Background

EVA (polyvinyl acetate copolymer for short) adhesive films are important components of photovoltaic cells, and are used for adhering battery pieces of photovoltaic cell assemblies to a bottom plate and adhering toughened glass to the battery pieces, wherein the EVA adhesive films are often used in a coiled mode, and the coiled EVA adhesive films are cut into thin sheets with the area equivalent to that of the photovoltaic cell assemblies when the EVA adhesive films are used.

The existing EVA adhesive film cutting machine needs to manually take down an air expansion shaft when feeding, installs a new material roll, and manually pulls the stub bar of the new material roll to a designated position, so that the problem of inconvenient feeding exists.

Disclosure of Invention

The invention solves the technical problem of providing an automatic feeding mechanism of a parallel double-shaft hot-melt cutting machine, which can realize automatic feeding of material rolls.

The invention solves the technical problems by adopting the technical proposal that an automatic feeding method,

The specific working steps are as follows:

the first material shaft is positioned at a working position, a first gear of the first material shaft is meshed with a second gear, a driving motor drives the first material shaft to rotate for discharging, and the second material shaft is positioned at a material inlet;

Step two, clamping a stub bar of a second stub bar shaft at a stub bar clamping translation mechanism;

When the tail material detection mechanism detects that the first material shaft is unreeled to the tail material, the head material clamping translation mechanism drives the head material of the second coiled material in the second material shaft to move forwards, and meanwhile, the material pushing mechanism pushes the second material shaft to a working position, and a first gear of the second material shaft is meshed with the second gear;

and step four, the second material shaft ejects the first material shaft to the tail end of the unreeling frame.

The machine comprises a frame, an unreeling frame, a first material shaft and a second material shaft which are arranged on the unreeling frame, wherein a head material clamping translation mechanism is further arranged on the frame;

One end of the first material shaft and one end of the second material shaft are driving ends, the other ends of the first material shaft and the second material shaft are limiting ends, the driving ends of the first material shaft and the second material shaft are respectively provided with a first gear, the rack is further provided with a second gear meshed with the first gear, the rack further comprises a driving motor for driving the second gear to rotate, and the rack is further provided with a limiting mechanism for limiting the limiting ends and a pushing roll mechanism for pushing the second material shaft to a working position;

and a tail detection mechanism for detecting the tail is further arranged on the frame.

The pushing roll mechanism comprises a first mounting plate and a second mounting plate which are mounted on a frame, a first rotating wheel and a second rotating wheel are mounted on the first mounting plate and the second mounting plate, a belt is sleeved on the first rotating wheel and the second rotating wheel, the pushing roll mechanism further comprises a first driving motor for driving the first rotating wheel or the second rotating wheel to rotate, and the pushing roll mechanism is mounted on the belt;

the first driving motor drives the first rotating wheel or the second rotating wheel to rotate, the belt moves around the first rotating wheel and the second rotating wheel, and the pushing and rolling mechanism moves horizontally along with the belt.

The belt conveyor comprises a belt, a driving frame, a pushing block and a limiting part, wherein the driving frame is arranged on the belt, the pushing block comprises a pushing part positioned at the upper part and a limiting part positioned at the lower part, the middle part of the pushing block is rotationally connected with the driving frame, the limiting part comprises a concave groove which is concave inwards, a protruding part which is used for extending into the concave groove is arranged on the driving frame, and the weight of the limiting part is larger than that of the pushing part;

In the pushing process, the pushing block rotates anticlockwise along the rotary mounting part, the second material shaft can enter the unreeling frame through the pushing block, the pushing block rotates clockwise to return to the vertical state because the weight of the limiting part is larger than that of the pushing part, and the pushing block cannot continue to rotate because the protruding part is positioned in the groove, so that the vertical state is maintained, and the pushing block pushes the second material shaft to move forwards to the working position under the action of the first driving motor.

The limiting mechanism comprises a supporting block and a limiting arc block which are correspondingly arranged at a working position, and further comprises a first driving cylinder for driving the limiting arc block to move downwards and a second driving cylinder for driving the supporting block to move upwards;

When the first material shaft or the second material shaft moves to the working position, the limiting end of the first material shaft or the second material shaft is limited between the arc-shaped block and the supporting block.

The head material clamping and translating mechanism comprises a first clamping block and a second clamping block which are connected through a push-pull clamp, wherein a first limiting block and a second limiting block which can slide on the first clamping block are sleeved on the first clamping block;

The machine frame is also provided with a horizontal driving cylinder for driving the first clamping block to horizontally move;

a graduated scale is arranged on the surface of the first clamping block;

When the material head is clamped, the positions of the first limiting block and the second limiting block are adjusted, the push-pull clamp is loosened, the material head of the second material shaft passes through a gap between the first clamping block and the second clamping block, then the push-pull clamp is pulled to be locked, and when the material is fed, the horizontal driving cylinder drives the first clamping block to drive the head material of the second coiled material to move forwards.

The bottom of the discharging end of the frame is provided with a containing frame, the containing frame is provided with a roller with a moving direction perpendicular to the moving direction from the feeding port to the discharging port, and one surface of the containing frame facing the frame is provided with a buffer block;

When the second material shaft is automatically fed, the first material shaft is ejected to the accommodating frame by the second material shaft, and the first material shaft can be held to be taken out along the rolling direction of the roller when the first material shaft is manually received.

The machine frame is provided with a lifting plate at the feed inlet, a supporting seat is arranged on the lifting plate, a positioning groove is arranged on the supporting seat, a blocking protrusion is arranged on one side of the supporting seat away from the machine frame, and the machine frame further comprises a third driving cylinder for driving the third lifting plate to do lifting motion;

When new feeding is performed, the lifting plate is driven to descend by the third driving air cylinder, new coil stock is placed on the supporting block by the external forklift, the lifting plate is driven to ascend by the third driving air cylinder, and the new coil stock is manually pushed onto the unreeling frame.

The automatic feeding device has the beneficial effects that the automatic feeding without stopping can be realized through the arrangement of the pushing and rolling mechanism, the head and material clamping and translating mechanism and the limiting mechanism, so that the production efficiency of products is improved while the manual work is reduced.

Drawings

Fig. 1 is a flowchart of an automatic feeding method according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an automatic feeding mechanism according to an embodiment of the present application.

Fig. 3 is a schematic diagram of an unreeling mechanism of the automatic feeding mechanism in an embodiment of the present application.

Fig. 4 is a schematic structural view of a housing rack of an automatic feeding mechanism according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a lifting support mechanism of an automatic feeding mechanism according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a head-material clamping and translating mechanism of an automatic feeding mechanism according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a pushing roll mechanism of an automatic feeding mechanism according to an embodiment of the present application.

Marked in the figure as:

The device comprises a frame 1, a first material shaft 2, a second material shaft 3, a first gear 4, a driving motor 5, a second gear 6, a supporting block 7, a limiting arc block 8, a first driving cylinder 9, a second driving cylinder 10, an unreeling frame 11, a containing frame 12, a roller 13, a buffer block 14, a lifting plate 15, a supporting seat 16, a positioning groove 17, a blocking protrusion 18, a third driving cylinder 19, a head material clamping translation mechanism 20, a first clamping block 21, a second clamping block 22, a push-pull clamp 23, a first limiting block 24, a second limiting block 25, a horizontal driving cylinder 26, a graduated scale 27, a pushing material reeling mechanism 28, a second mounting plate 29, a first rotating wheel 30, a second rotating wheel 31, a first driving motor 32, a belt 33, a driving frame 34, a protruding part 35, a pushing block 36, a pushing part 37, a limiting part 38 and a first mounting plate 39.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings.

As shown in fig. 1 and fig. 2, the embodiment of the application discloses an automatic feeding method, which comprises a frame 1, an unreeling frame 11, a first material shaft 2 and a second material shaft 3 which are arranged on the unreeling frame 11, wherein a head material clamping and translating mechanism 20 is further arranged on the frame 1;

One end of the first material shaft 2 and one end of the second material shaft 3 are driving ends, the other end of the first material shaft 2 and the other end of the second material shaft 3 are limiting ends, the driving ends of the first material shaft 2 and the second material shaft 3 are respectively provided with a first gear 4, the frame 1 is also provided with a second gear 6 which is meshed with the first gear 4, the frame also comprises a driving motor 5 which drives the second gear 6 to rotate, and the frame 1 is also provided with a limiting mechanism which is used for limiting the limiting ends and a pushing roll mechanism 28 which is used for pushing the second material shaft 3 to a working position;

The machine frame 1 is also provided with a tailing detection mechanism for detecting tailings;

the specific working steps are as follows:

The first material shaft 2 is positioned at a working position, a first gear 4 of the first material shaft 2 is meshed with a second gear 6, a driving motor 5 drives the first material shaft 2 to rotate for discharging, and a second material shaft 3 is positioned at a material inlet;

step two, clamping the stub bar of the second stub bar 3 at the stub bar clamping translation mechanism 20;

When the tailing detection mechanism detects that the first material shaft 2 is unreeled to the tailings, the head material clamping translation mechanism 20 drives the head material of the second coiled material in the second material shaft 3 to move forwards, and meanwhile, the material pushing mechanism 28 pushes the second material shaft 3 to a working position, and the first gear 4 of the second material shaft 3 is meshed with the second gear 6;

And step four, the second material shaft 3 ejects the first material shaft 2 to the tail end of the unreeling frame 11.

It should be explained that the tailing detecting mechanism may be an infrared sensor, an ultrasonic sensor, a visual probe, etc., the driving motor 5 is mounted on the frame 1, and the second gear 6 is mounted on an output shaft of the driving motor 5.

This structure is through pushing away the setting of material book mechanism 28, can realize promoting the second material axle 3 to working position voluntarily, make the first gear 4 on the second material axle 3 mesh with the first gear 4 on driving motor 5, thereby make the second material axle 3 can do the rotatory blowing operation of initiative, through the setting of the tight translation mechanism 20 of head material clamp, can realize pulling forward the head material on the second material axle 3 to the assigned position, the manual work only need in advance do a stub bar press from both sides tight action can, through stop gear's setting, can realize the location to first material axle 2 and second material axle 3, prevent that it breaks away from working position, thereby this mechanism can realize automatic non-stop material loading, thereby when reducing manual work, also improved the production efficiency of product.

In this embodiment, as shown in fig. 7, the pushing roll mechanism 28 includes a first mounting plate 39 and a second mounting plate 29 mounted on the frame 1, a first rotating wheel 30 and a second rotating wheel 31 are mounted on the first mounting plate 39 and the second mounting plate 29, a belt 33 is sleeved on the first rotating wheel 30 and the second rotating wheel 31, and a first driving motor 32 for driving the first rotating wheel 30 or the second rotating wheel 31 to rotate is further included, and the pushing roll mechanism 28 is mounted on the belt 33;

Specifically, the output shaft of the first driving motor 32 may be connected to the first rotating wheel 30, and the output shaft of the first driving motor 32 may be connected to the second rotating wheel 31.

In operation, the first driving motor 32 drives the first rotating wheel 30 or the second rotating wheel 31 to rotate, and the belt 33 moves around the first rotating wheel 30 and the second rotating wheel 31, so that the pushing roll mechanism 28 moves horizontally along with the belt 33.

The arrangement of the structure can drive the pushing roll mechanism 28 to move forwards through the driving of the motor of the first driving motor 32, so that the pushing action on the second roll can be realized.

In this embodiment, the belt driving device further comprises a driving frame 34 mounted on the belt 33, and further comprises a pushing block 36, wherein the pushing block 36 comprises a pushing part 37 positioned at the upper part and a limiting part 38 positioned at the lower part, the middle part of the pushing block 36 is rotationally connected with the driving frame 34, the limiting part 38 comprises an inward concave groove, the driving frame 34 is provided with a protruding part 35 used for extending into the groove, and the weight of the limiting part 38 is greater than that of the pushing part 37;

In the pushing process, the pushing block 36 rotates anticlockwise along the rotation mounting part, the second material shaft 3 can enter the unreeling frame 11 through the pushing block 36, the pushing block 36 rotates clockwise to return to the vertical state because the weight of the limiting part 38 is larger than that of the pushing part 37, and the pushing block 36 cannot rotate continuously because the protruding part 35 is positioned in the groove, so that the vertical state is maintained, and the pushing block 36 pushes the second material shaft 3 to move forwards to the working position under the action of the first driving motor 32.

Specifically, the driving frame 34 includes a driving plate, a first adjusting plate is installed on the driving plate, and further includes a second adjusting plate installed on the first adjusting plate, an arc structure is disposed at an end of the first adjusting plate, a protruding portion 35 is disposed at an end of the arc structure, and a middle portion of the pushing block 36 is rotatably connected to the arc structure.

Specifically, the driving plate and the first adjusting plate are both provided with waist-shaped grooves, so that the positions of the first adjusting plate and the second adjusting plate can be adjusted through the matching of the positions of the bolts and the waist-shaped grooves, the pushing block 36 can better push the second material shaft 3 to move, meanwhile, the pushing block 36 is designed into a form that the weight of the limiting part 38 is larger than that of the pushing part 37 and the pushing block 36 is rotatable, and therefore, on one hand, the pushing block 36 can not block the second material shaft 3 entering the frame 1, and meanwhile, the automatic resetting of the pushing block 36 can be realized, so that the effect of pushing the second material shaft 3 to move can be realized.

In this embodiment, as shown in fig. 3, the limiting mechanism includes a supporting block and a limiting arc block 8 correspondingly disposed at a working position, and further includes a first driving cylinder 9 for driving the limiting arc block 8 to move downward and a second driving cylinder 10 for driving the supporting block to move upward;

when the first material shaft 2 or the second material shaft 3 moves to the working position, the limiting end of the first material shaft 2 or the second material shaft 3 is limited between the arc-shaped block and the supporting block.

That is, after the first material shaft 2 or the second material shaft 3 is pushed to the working position, the second driving cylinder 10 drives the supporting block to move upwards, and the first driving cylinder 9 drives the limiting arc block 8 to move downwards, so that the limiting end of the first material shaft 2 or the second material shaft 3 is limited between the arc block and the supporting block, and the first material shaft 2 or the second material shaft 3 cannot deviate in position in the working process.

The supporting block and the limiting arc block 8 in the structure can limit the first material shaft 2 or the second material shaft 3, so that the first material shaft 2 or the second material shaft 3 is prevented from being misplaced in the working process.

In this embodiment, as shown in fig. 6, the head material clamping and translating mechanism 20 includes a first clamping block 21 and a second clamping block 22 connected by a push-pull clamp 23, and a first limiting block 24 and a second limiting block 25 that can slide on the first clamping block 21 are sleeved on the first clamping block 21;

The frame 1 is also provided with a horizontal driving cylinder 26 for driving the first clamping block 21 to horizontally move;

the surface of the first clamping block 21 is provided with a graduated scale 27;

When the material head is clamped, the positions of the first limiting block 24 and the second limiting block 25 are adjusted, the push-pull clamp 23 is loosened, the material head of the second material shaft 3 passes through a gap between the first clamping block 21 and the second clamping block 22, then the push-pull clamp 23 is pulled to be locked, and when the material is fed, the horizontal driving cylinder 26 drives the first clamping block 21 to drive the head material of the second coiled material to move forwards.

Specifically, the first limiting block 24 and the second limiting block 25 are fixed on the first clamping block 21 through the first locking knob and the second locking knob, namely, when the positions of the first limiting block 24 and the second limiting block 25 are adjusted, the first locking knob and the second locking knob are unscrewed, then according to the width of a coil stock, the positions of the first limiting block 24 and the second limiting block 25 are adjusted by matching with the graduated scale 27, and then the first locking knob and the second locking knob are screwed.

The setting of this structure can realize automatic feeding operation, and the setting of first stopper 24 and second stopper 25 can realize the spacing to the stub bar clamping position of second stub bar 3 simultaneously for the clamping position of stub bar is more accurate, simultaneously, and first stopper 24 and second stopper 25 are adjustable structure, thereby can adjust according to the width of stub bar, thereby makes this device can adapt to the material of various different widths and rolls up the use.

In this embodiment, as shown in fig. 4, a containing frame 12 is disposed at the bottom of the discharge end of the frame 1, a roller 13 having a movement direction perpendicular to the movement direction from the feed inlet to the discharge outlet is disposed on the containing frame 12, and a buffer block 14 is disposed on a surface of the containing frame 12 facing the frame 1;

When the second material shaft 3 is automatically fed, the first material shaft 2 is ejected to the accommodating frame 12 by the second material shaft 3, and the first material shaft 2 can be taken out along the rolling direction of the roller 13 by taking the first material shaft 2 manually.

Specifically, the end of the accommodating frame 12 far away from the frame 1 is provided with a baffle structure, and the buffer block 14 is mounted on the baffle structure.

In this structure, the setting of acceping the frame 12 can realize empty unreeling shaft and receive the material effect, and wherein, buffer block 14's setting can play the cushioning effect, prevents that empty unreeling shaft from directly colliding with acceping the frame 12, simultaneously, through setting up gyro wheel 13, can make things convenient for empty unreeling shaft's taking out, reduces the empty unreeling shaft and acceping the direct friction of frame 12.

In this embodiment, as shown in fig. 5, a lifting plate 15 is disposed at the position of the feeding port of the frame 1, a supporting seat 16 is disposed on the lifting plate 15, a positioning groove 17 is disposed on the supporting seat 16, a blocking protrusion 18 is disposed on a side of the supporting seat 16 away from the frame 1, and a third driving cylinder 19 for driving the third lifting plate 15 to perform lifting movement is further included;

When the novel coil stock feeding device works, during feeding of a novel coil stock shaft, the lifting plate 15 is driven to descend by the third driving air cylinder 19, the novel coil stock is placed on the supporting block by the external forklift, the lifting plate 15 is driven to ascend by the third driving air cylinder 19, and the novel coil stock is manually pushed onto the unreeling frame 11.

In this structure, through the setting of lifter plate 15, can make things convenient for outside to connect equipment to send into frame 1 with new coil stock, positioning groove 17 and stop protruding 18's setting can prevent to put into the coil stock on the supporting seat 16 and drop.

While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.

Claims

1. An automatic feeding method is characterized in that:

the specific working steps are as follows:

the first material shaft (2) is positioned at a working position, a first gear (4) of the first material shaft (2) is meshed with a second gear (6), a driving motor (5) drives the first material shaft (2) to rotate for discharging, and the second material shaft (3) is positioned at a material inlet;

step two, clamping the stub bar of the second stub bar (3) at the stub bar clamping translation mechanism (20);

When the tailing detection mechanism detects that the first material shaft (2) is unreeled to the tailings, the head material clamps the translation mechanism (20) to drive the head material of the second coiled material in the second material shaft (3) to move forwards, meanwhile, the pushing material coiling mechanism (28) pushes the second material shaft (3) to a working position, and the first gear (4) of the second material shaft (3) is meshed with the second gear (6);

And fourthly, ejecting the first material shaft (2) to the tail end of the unreeling frame (11) by the second material shaft (3).

2. An automatic feeding method as claimed in claim 1, characterized by comprising a frame (1), an unreeling frame (11), a first material shaft (2) and a second material shaft (3) arranged on the unreeling frame (11), wherein a head material clamping and translating mechanism (20) is further arranged on the frame (1);

One end of the first material shaft (2) and one end of the second material shaft (3) are driving ends, the other ends of the first material shaft (2) and the second material shaft (3) are limiting ends, the driving ends of the first material shaft (2) and the second material shaft (3) are both provided with a first gear (4), a second gear (6) meshed with the first gear (4) is further arranged on the frame (1), the driving motor (5) for driving the second gear (6) to rotate is further arranged on the frame (1), and a limiting mechanism for limiting the limiting ends and a pushing and rolling mechanism (28) for pushing the second material shaft (3) to a working position are further arranged on the frame (1);

and a tail detection mechanism for detecting the tail is further arranged on the frame (1).

3. An automatic feeding method as claimed in claim 2, wherein the pushing and rolling mechanism (28) comprises a first mounting plate (39) and a second mounting plate (29) which are mounted on the frame (1), a first rotating wheel (30) and a second rotating wheel (31) are mounted on the first mounting plate (39) and the second mounting plate (29), a belt (33) is sleeved on the first rotating wheel (30) and the second rotating wheel (31), and the automatic feeding method further comprises a first driving motor (32) for driving the first rotating wheel (30) or the second rotating wheel (31) to rotate, and the pushing and rolling mechanism (28) is mounted on the belt (33);

The first driving motor (32) drives the first rotating wheel (30) or the second rotating wheel (31) to rotate, the belt (33) moves around the first rotating wheel (30) and the second rotating wheel (31), and the pushing roll mechanism (28) moves horizontally along with the belt (33).

4. An automatic feeding method according to claim 3, further comprising a driving frame (34) mounted on the belt (33), and further comprising a pushing block (36), wherein the pushing block (36) comprises a pushing part (37) positioned at the upper part and a limiting part (38) positioned at the lower part, the middle part of the pushing block (36) is rotatably connected with the driving frame (34), the limiting part (38) comprises an inwards concave groove, the driving frame (34) is provided with a protruding part (35) for extending into the groove, and the weight of the limiting part (38) is larger than that of the pushing part (37);

In the pushing process, the pushing block (36) rotates anticlockwise along the rotary mounting part, the second material shaft (3) can enter the unreeling frame (11) through the pushing block (36), the pushing block (36) rotates clockwise to return to the vertical state because the weight of the limiting part (38) is larger than that of the pushing part (37), the pushing block (36) cannot rotate continuously because the protruding part (35) is positioned in the groove, so that the vertical state is maintained, and under the action of the first driving motor (32), the pushing block (36) pushes the second material shaft (3) to move forwards to the working position.

5. An automatic feeding method as claimed in claim 2, wherein the limiting mechanism comprises a supporting block (7) and a limiting arc block (8) which are correspondingly arranged at the working position, and further comprises a first driving cylinder (9) for driving the limiting arc block (8) to move downwards and a second driving cylinder (10) for driving the supporting block (7) to move upwards;

When the first material shaft (2) or the second material shaft (3) moves to the working position, the limiting end of the first material shaft (2) or the second material shaft (3) is limited between the arc-shaped block and the supporting block (7).

6. An automatic feeding method as claimed in claim 2, wherein the head material clamping and translating mechanism (20) comprises a first clamping block (21) and a second clamping block (22) which are connected through a push-pull clamp (23), and a first limiting block (24) and a second limiting block (25) which can slide on the first clamping block (21) are sleeved on the first clamping block (21);

The frame (1) is also provided with a horizontal driving cylinder (26) for driving the first clamping block (21) to horizontally move;

A graduated scale (27) is arranged on the surface of the first clamping block (21);

When the material head is clamped, the positions of the first limiting block (24) and the second limiting block (25) are adjusted, the push-pull clamp (23) is loosened, the material head of the second material shaft (3) passes through a gap between the first clamping block (21) and the second clamping block (22), then the push-pull clamp (23) is pulled to be locked, and when feeding is carried out, the horizontal driving cylinder (26) drives the first clamping block (21) to drive the head material of the second coiled material to move forwards.

7. The automatic feeding method of claim 2, wherein a containing frame (12) is arranged at the bottom of the discharging end of the frame (1), a roller (13) with the moving direction perpendicular to the moving direction from the feeding port to the discharging port is arranged on the containing frame (12), and a buffer block (14) is arranged on one surface of the containing frame (12) facing the frame (1);

When the second material shaft (3) automatically feeds, the first material shaft (2) is ejected to the accommodating frame (12) by the second material shaft (3), and the first material shaft (2) can be taken out along the rolling direction of the roller (13) by manual work when the first material shaft (2) is received.

8. An automatic feeding method as claimed in claim 2, wherein the frame (1) is provided with a lifting plate (15) at the feed inlet, a supporting seat (16) is arranged on the lifting plate (15), a positioning groove (17) is arranged on the supporting seat (16), a blocking protrusion (18) is arranged on one side of the supporting seat (16) far away from the frame (1), and a third driving cylinder (19) for driving the third lifting plate (15) to do lifting movement is further included;

When new feeding is carried out, the third driving air cylinder (19) drives the lifting plate (15) to descend, the external forklift is used for placing new coiled materials on the supporting blocks (7), the third driving air cylinder (19) drives the lifting plate (15) to ascend, and the new coiled materials are manually pushed onto the unreeling frame (11).