CN113044627A

CN113044627A - Automatic material supplementing device for material roll of printing machine and using method thereof

Info

Publication number: CN113044627A
Application number: CN202110365157.4A
Authority: CN
Inventors: 徐歌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-06-29

Abstract

The invention relates to the field of printing machines, in particular to an automatic material supplementing device for a material roll of a printing machine and a using method thereof. The automatic material supplementing device for the material roll for the printing machine and the use method thereof realize synchronous feeding and discharging of the material roll, do not need to adjust and position the material roll for many times, save time and labor, improve the working efficiency and the service life of a driving mechanism, realize the sharing of the same driving mechanism for feeding and feeding, simplify the equipment structure, reduce the cost and facilitate maintenance.

Description

Automatic material supplementing device for material roll of printing machine and using method thereof

Technical Field

The invention relates to the field of printing machines, in particular to an automatic material supplementing device for a material roll for a printing machine and a using method thereof.

Background

The material roll of printing machine utilizes jacking equipment to roll up the material and promotes to take the place of a height at material loading in-process usually, then the height and the both ends position of rolling up the material through the adjustment make the end shaft of material roll carry the drive unit with the material of printing machine to carry out the transmission and be connected, consequently, the material loading process is comparatively loaded down with trivial details, it is longer to consume time, reduce the work efficiency of printing machine, and intensity of labour is big, require higher to personnel's technical experience, the error appears easily, thereby the end shaft that leads to the material roll does not correspond with drive unit's transmission shaft, lead to drive unit's transmission shaft distortion stress to appear, and then produce the damage to drive unit, therefore this application provides an automatic feed supplement device.

Disclosure of Invention

The invention aims to provide an automatic material supplementing device for a material roll for a printing machine and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the automatic material supplementing device for the material roll for the printing machine comprises a base, wherein a driving mechanism and a feeding mechanism are arranged on the base, the feeding mechanism is used for shifting the material roll to a set position of the printing machine, the driving mechanism can be in transmission connection with the feeding mechanism, the driving mechanism is used for driving the feeding mechanism to lift the material roll and drive the material roll to convey materials, a locking mechanism is arranged on the feeding mechanism, and the locking mechanism can be in lock catch connection with the feeding mechanism and carries out limiting locking on the feeding mechanism.

Preferably, feed mechanism includes support two and support three, support two and three equal perpendicular and fixed connection of support are on the base, dead axle rotates on the support two to be connected with pivot one, pivot one and support two, support three is perpendicular, and pivot one runs through support two, the one end dead axle of the directional support three of pivot rotates to be connected on support three, the one end that support three was kept away from to pivot one is fixed with gear one, be provided with locking mechanism on the support two, locking mechanism can be connected with a pivot hasp to carry out spacing locking to pivot one.

Preferably, the first rotating shaft is fixedly connected with the two feeding frame plates, the first rotating shaft is perpendicular to the middle of the feeding frame plates, the two feeding frame plates are arranged in parallel, projections of the two feeding frame plates can be completely overlapped, the side walls of the two ends of each feeding frame plate are provided with U-shaped grooves by taking the circle center of the cross section of the first rotating shaft as a symmetric center, the centers of the two ends of the material roll are respectively fixed with end shafts, and the end shafts can be inserted into the U-shaped grooves and can slide in the U-shaped grooves and rotate in a fixed axis mode.

Preferably, the inside straight lateral wall that is close to pivot one of U-shaped inslot has seted up the spout, and the trend of spout is mutually perpendicular with the opening direction in U-shaped groove, the inside sliding connection of spout has the stopping pole, the inside one end of the directional spout of stopping pole is connected with the inner wall of spout through spring three, the one end in the directional U-shaped groove of stopping pole is the wedge form, and the wedge face is towards the opening side in U-shaped groove, the logical groove that is linked together with the spout is seted up to the position that corresponds the spout on the material loading frame plate, the trend that leads to the groove parallels with the trend of spout, it has the push rod to peg graft in leading to the inslot, the push rod can.

Preferably, actuating mechanism includes motor and cylinder, and the motor is fixed in the upper end of support one, and support one is fixed on the base, and support one and support tribit are in the both sides of support two, the output shaft end fixed connection tooth post of motor, and the cylinder is fixed in the upper end of support two, and the piston rod end of cylinder is perpendicular and fixedly connected with driving lever, is fixed with the cantilever on the support two, is fixed with touch switch one and touch switch two on the cantilever, and the driving lever is located between touch switch one and touch switch two, and the driving lever can support the knot contact with touch switch one and touch switch two respectively.

Preferably, the driving mechanism further comprises a second rotating shaft, the second rotating shaft is parallel to the first rotating shaft and penetrates through the second support, the second rotating shaft is fixedly connected to the second support in a rotating mode, a second gear is fixed at one end, pointing to the first support, of the second rotating shaft and meshed with the gear column, and the second gear can be meshed with the first gear.

Preferably, a sleeve is fixed at one end of the third rotating shaft two-directional support, a multi-edge rod is fixed on an end shaft, close to the second support, of the material roll, the sleeve can be sleeved on the multi-edge rod and is in sliding connection with the multi-edge rod, one end of the second rotating shaft, close to the sleeve, is sleeved on the sleeve and is connected with a ring sleeve in a fixed-axis rotating mode, and one end, far away from a piston rod of the air cylinder, of the shifting rod is perpendicular to and fixedly connected with the peripheral wall.

Preferably, the locking mechanism comprises a fluted disc fixed on the first rotating shaft, two convex rods are fixed on the outer peripheral wall of the fluted disc at equal intervals, a first guide frame and a second guide frame are fixed on the second support frame, a push rod is connected on the first guide frame in a sliding manner and is arranged perpendicular to the first rotating shaft, the convex rods can be in abutting-buckling contact with one end of the push rod, which points to the fluted disc, and are hemispherical with one end of the push rod, which points to the fluted disc, connected with the first guide frame through a first spring, a third touch switch is fixed on the second support frame, and one end of the push rod, which points to the fluted disc, can be in abutting-buckling contact with the third touch switch, a sliding rod is connected on the second guide frame in a sliding manner and is arranged perpendicular to the first rotating shaft, a toothed plate is fixed on one end of the sliding rod, which points to the fluted disc, and can be in meshing connection with the, an electromagnetic plate is fixed on the second bracket and can be fixedly connected with the iron plate through electromagnetic attraction.

Preferably, the electromagnetic switch further comprises a controller, a signal input end of the controller can be respectively and electrically connected with the first touch switch, the second touch switch and the third touch switch, and an execution output end of the controller can be respectively and electrically connected with the motor, the cylinder and the electromagnetic plate.

In addition, the use method of the automatic material supplementing device for the material roll for the printing machine is also provided, and the use method comprises the following steps:

the method comprises the following steps: when a material roll needs to be replaced, the locking limiting of the feeding mechanism is released through the locking mechanism, and the feeding mechanism is driven by the driving mechanism to feed the material roll;

step two: after the feeding is finished, the feeding mechanism is locked and limited through the locking mechanism, and the driving mechanism drives the material roll to rotate for feeding;

step two: and (4) as described in the second step and the third step, taking the used material roll off from the feeding mechanism, and installing a new material roll on the feeding mechanism.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, when a material roll needs to be replaced, the locking limit of the feeding mechanism is released through the locking mechanism, the feeding mechanism is driven by the driving mechanism to feed the material roll, and the used material roll is discharged at the same time, and the feeding and discharging are carried out in a fixed-shaft rotating mode, so that the material roll does not need to be adjusted and positioned for many times, time and labor are saved, the working efficiency is improved, errors are avoided, the positioning accuracy is improved, and the torsion stress is not generated on an output shaft of the driving mechanism when the material roll rotates for feeding, so that the service life of the driving mechanism is prolonged, the used material roll is taken down from the feeding mechanism, and a new material roll is installed on the feeding mechanism, and the operation is simple and convenient;

according to the invention, after the feeding is finished, the locking mechanism is used for locking and limiting the feeding mechanism, and the driving mechanism is used for driving the material roll to rotate for feeding, so that the feeding and the feeding share the same driving mechanism, the equipment structure is simplified, the cost is reduced, and the maintenance is convenient.

Drawings

FIG. 1 is a first schematic view of an assembly structure according to the present invention;

FIG. 2 is a second schematic view of the final assembly structure of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2;

FIG. 4 is a schematic view of the unlocked state of the locking mechanism of the present invention;

FIG. 5 is a right side view of a feeding frame plate structure of the present invention;

fig. 6 is a right side view of a feeding frame plate structure in the present invention.

In the figure: 1. a base; 2. a first bracket; 3. a second bracket; 4. a third bracket; 5. a first rotating shaft; 6. a feeding frame plate; 7. a first gear; 8. a motor; 9. a tooth post; 10. a cylinder; 11. a deflector rod; 12. a first touch switch; 13. a cantilever; 14. a second rotating shaft; 15. a second gear; 16. sleeving a ring; 17. a sleeve; 18. material rolls; 19. an end shaft; 20. a polygonal rod; 21. a second touch switch; 22. a locking mechanism; 23. a fluted disc; 24. a nose bar; 25. a first guide frame; 26. a top rod; 27. a first spring; 28. a third touch switch; 29. a second guide frame; 30. a slide bar; 31. a toothed plate; 32. a second spring; 33. an iron plate; 34. an electromagnetic plate; 35. a U-shaped groove; 36. a chute; 37. a third spring; 38. a backstop rod; 39. a push rod; 40. a through groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the automatic material supplementing device for the material roll of the printing machine comprises a base 1, wherein a driving mechanism and a feeding mechanism are arranged on the base 1, the feeding mechanism is used for shifting the material roll 18 to a set position of the printing machine, the driving mechanism can be in transmission connection with the feeding mechanism, the driving mechanism is used for driving the feeding mechanism to lift the material roll 18 and drive the material roll 18 to convey materials, a locking mechanism 22 is arranged on the feeding mechanism, and the locking mechanism 22 can be in lock catch connection with the feeding mechanism and used for limiting and locking the feeding mechanism.

In this embodiment, as shown in fig. 1 and fig. 2, the feeding mechanism includes a second support 3 and a third support 4, the second support 3 and the third support 4 are both perpendicular and fixedly connected to the base 1, a first rotating shaft 5 is rotatably connected to the second support 3, the first rotating shaft 5 is perpendicular to the second support 3 and the third support 4, the first rotating shaft 5 penetrates through the second support 3, one end of the first rotating shaft 5, which points to the third support 4, is rotatably connected to the third support 4, a first gear 7 is fixed to one end of the first rotating shaft 5, which is far away from the third support 4, a locking mechanism is arranged on the second support 3, and the locking mechanism 22 can be connected with a first rotating shaft 5 through a lock catch and can perform limiting locking on the first rotating shaft 5.

In this embodiment, as shown in fig. 1, fig. 2, fig. 5, and fig. 6, two feeding frame plates 6 are fixedly connected to a first rotating shaft 5, the first rotating shaft 5 is perpendicular to the middle of the feeding frame plates 6, the two feeding frame plates 6 are arranged in parallel, and the projections can be completely overlapped, U-shaped grooves 35 are formed in the side walls of the two ends of the feeding frame plates 6, using the circle center of the cross section of the first rotating shaft 5 as the center of symmetry, end shafts 19 are fixed to the centers of the two ends of the material roll 18, and the end shafts 19 can be inserted into the U-shaped grooves 35 and can slide in the U-shaped grooves 35 and can rotate around the fixed.

In this embodiment, as shown in fig. 5 and 6, a sliding groove 36 is formed in the straight side wall of the U-shaped groove 35 close to the first rotating shaft 5, the direction of the sliding groove 36 is perpendicular to the opening direction of the U-shaped groove 35, a stopping rod 38 is slidably connected to the inside of the sliding groove 36, one end of the stopping rod 38, which points to the inside of the sliding groove 36, is connected to the inner wall of the sliding groove 36 through a third spring 37, one end of the stopping rod 38, which points to the U-shaped groove 35, is in a wedge shape, the wedge surface faces the opening side of the U-shaped groove 35, a through groove 40 communicated with the sliding groove 36 is formed in the loading frame plate 6 corresponding to the position of the sliding groove 36, the direction of the through groove 40 is parallel to the direction of the sliding groove 36, a push rod 39 is inserted into.

In this embodiment, as shown in fig. 1 and 2, the driving mechanism includes a motor 8 and a cylinder 10, the motor 8 is fixed at the upper end of a first support 2, the first support 2 is fixed on the base 1, and the first support 2 and a third support 4 are located at two sides of a second support 3, an output shaft end of the motor 8 is fixedly connected with the tooth post 9, the cylinder 10 is fixed at the upper end of the second support 3, a piston rod end of the cylinder 10 is vertical and fixedly connected with a shift lever 11, a cantilever 13 is fixed on the second support 3, a first touch switch 12 and a second touch switch 21 are fixed on the cantilever 13, the shift lever 11 is located between the first touch switch 12 and the second touch switch 21, and the shift lever 11 can be respectively in abutting contact with the first touch switch 12 and the second touch.

In this embodiment, as shown in fig. 1 and fig. 2, the driving mechanism further includes a second rotating shaft 14, the second rotating shaft 14 is parallel to the first rotating shaft 5 and penetrates through the second bracket 3, the second rotating shaft 14 is fixed to the second bracket 3 in a fixed-axis rotating manner, a second gear 15 is fixed to one end of the second rotating shaft 14, which points to the first bracket 2, the second gear 15 is engaged with the toothed column 9, and the second gear 15 is engaged with the first gear 7.

In this embodiment, as shown in fig. 1 and fig. 2, a sleeve 17 is fixed at an end of the second rotating shaft 14 facing the third support 4, a polygonal rod 20 is fixed on an end shaft 19 of the material roll 18 close to the second support 3, the sleeve 17 can be sleeved and slidably connected to the polygonal rod 20, an end of the second rotating shaft 14 close to the sleeve 17 is sleeved and fixedly axially and rotatably connected with a ring sleeve 16, and an end of the rod of the shift lever 11 far away from the cylinder 10 is perpendicular to and fixedly connected with an outer peripheral wall of the ring sleeve 16.

In this embodiment, as shown in fig. 3 and 4, the locking mechanism includes a toothed disc 23 fixed on a first rotating shaft 5, two protruding rods 24 are fixed on an outer peripheral wall of the toothed disc 23 at equal intervals, a first guide frame 25 and a second guide frame 29 are fixed on a second support frame 3, a top rod 26 is slidably connected on the first guide frame 25, the top rod 26 is disposed perpendicular to the first rotating shaft 5, the protruding rods 24 can be in abutting contact with one end of the top rod 26 pointing to the toothed disc 23, ends of the protruding rods 24 and the top rod 26 pointing to the toothed disc 23 are hemispherical, one end of the top rod 26 far away from the toothed disc 23 is connected with the first guide frame 25 through a first spring 27, a third touch switch 28 is fixed on the second support frame 3, one end of the top rod 26 far away from the toothed disc 23 can be in abutting contact with the third touch switch 28, a sliding rod 30 is slidably connected on the second guide frame 29, the sliding rod 30 is disposed perpendicular to the first, and the toothed plate 31 can be meshed with the toothed plate 23, the toothed plate 31 is connected with the second guide frame 29 through the second spring 32, an iron plate 33 is fixed at one end, away from the toothed plate 23, of the sliding rod 30, an electromagnetic plate 34 is fixed on the second support frame 3, and the electromagnetic plate 34 can be fixedly connected with the iron plate 33 through electromagnetic suction.

In this embodiment, the controller is further included, signal input ends of the controller may be electrically connected to the first touch switch 12, the second touch switch 21, and the third touch switch 28, respectively, and an execution output end of the controller may be electrically connected to the motor 8, the cylinder 10, and the electromagnetic plate 34, respectively.

The use method and the advantages of the invention are as follows: when the automatic material supplementing device for the material roll for the printing machine is used for supplementing material of the material roll, the working process is as follows:

the method comprises the following steps: as shown in fig. 1 and 4, at this time, the cylinder 10 is in a state of contracting the piston rod, the second gear 15 is engaged with the tooth post 9 and the first gear 7, and the sleeve 17 is separated from the corresponding polygonal rod 20, when the material roll 18 needs to be replaced, the controller controls the electromagnetic plate 34 to be electrified, so that the electromagnetic plate 34 is attracted and fixed to the iron plate 33 by using electromagnetic attraction after being electrified, and the iron plate 33 drives the tooth plate 31 to be away from the tooth plate 23 through the slide rod 30 and compresses the second spring 32, so that the second spring 32 obtains a restoring force, and the controller controls the motor 8 to rotate, so that the motor 8 drives the first gear 7 to rotate through the tooth post 9 and the second gear 15, so that the first gear 7 drives the first rotating shaft 5 to rotate, the rotating toothed plate 23 and the upper material frame plate 6 rotate through the first rotating shaft 5, the toothed plate 23 drives the protruding rod 24 to rotate when rotating, and the protruding rod 24 does not contact with the toothed plate, avoid influencing the rotation of fluted disc 23, the rotation of the feeding frame plate 6 lifts the new material roll 18 at the lower end upwards, and simultaneously falls the material roll 18 with the upper end used down, thereby realizing simultaneous blanking and feeding, and the structure is simple, the maintenance is convenient, when the fluted disc 23 rotates 180 degrees, namely, the rotating shaft one 5 also drives the feeding frame plate 6 to rotate 180 degrees, at this time, the new material roll 18 is just at the working position of the material roll 18 of the printing machine, and the convex rod 24 is contacted with the top rod 26 in a buckling way and pushes the top rod 26 to stretch the spring one 27 so as to lead the spring one 27 to obtain a restoring force, and simultaneously, the top rod 26 is contacted with the touch switch three 28 in a buckling way, the touch switch three 28 transmits the touch signal of the convex rod 24 to the controller, the controller controls the electromagnetic plate 34 to be powered off, thereby not generating electromagnetic suction force on the iron plate 33, and leads the toothed plate 31 to approach to the fluted disc 23, the material loading frame plate 6 adopts a fixed shaft rotating mode to load materials, so that the material roll 18 does not need to be adjusted and positioned for many times, time and labor are saved, the working efficiency is improved, errors are avoided, the positioning accuracy is improved, torsional stress cannot be generated on an output shaft of the driving mechanism when the material roll 18 rotates to feed materials, and the service life of the driving mechanism is prolonged;

step two: when the ejector rod 26 is in abutting contact with the third touch switch 28, the controller controls the cylinder 10 to work and extend out of a piston rod of the cylinder, so that the shift lever 11 and the ring sleeve 16 drive the second rotating shaft 14 to move towards the upper material frame plate 6, the sleeve 17 is sleeved on the corresponding multi-edge rod 20, the second gear 15 is separated from the first gear 7, when the shift lever 11 is in abutting contact with the second touch switch 21, the second touch switch 21 transmits a touch signal of the shift lever 11 to the controller, the controller controls the cylinder 10 to keep and controls the motor 8 to work, after the motor 8 works, the motor 8 drives the second rotating shaft 14 to rotate through the tooth post 9 and the second gear 15, so that the second rotating shaft 14 drives the end shaft 19 to rotate through the sleeve 17 and the multi-edge rod 20, the end shaft 19 drives the material coil 18 to rotate, the material is fed to the printing machine, the same driving mechanism for feeding and feeding is realized, and the equipment structure is, the cost is reduced, and the maintenance and the repair are convenient;

when the material roll 18 needs to be replaced again, the controller controls the motor 8 to stop working, the air cylinder 10 is controlled to contract a piston rod of the air cylinder, the piston rod drives the rotating shaft II 14 to approach the support I2 through the deflector rod 11 and the ring sleeve 16, the sleeve 17 is separated from the multi-edge rod 20, the gear II 15 is meshed with the tooth column 9 and the gear I7 at the same time, when the deflector rod 11 is in abutting and buckling contact with the touch switch I12, the touch switch I12 transmits a touch signal of the deflector rod 11 to the controller, the controller controls the electromagnetic plate 34 to be electrified, the locking mechanism releases the locking limit of the rotating shaft I5, and the motor 8 is started to drive the rotating shaft I5 to rotate, so that the material roll 18 is fed and discharged at the same time;

step three: as shown in fig. 5 and 6, after the used material roll 18 is blanked off from the material loading frame plate 6, as for the blanked material roll 18, the push rod 39 is held by hand and the push rod 39 pushes the retaining rod 38 to move into the sliding groove 36, so that the retaining rod 38 compresses the spring three 37 and contacts with the block of the end shaft 19, thereby facilitating the removal of the used material roll 18 from the material loading frame plate 6, then a new material roll 18 is replaced, the end shaft on the new material roll 18 is positioned in the U-shaped groove 35, the push rod 39 is released, the retaining rod 38 moves into the U-shaped groove 35 under the action of the spring three 37, the end shaft 19 is limited, the material roll 18 is prevented from sliding off from the material loading frame plate 6 during the material loading, the safety is ensured, the rotational stability of the material roll 18 is maintained during the rotational material loading, thereby facilitating the replacement of the material roll 18, the operation is simple, convenient and time-saving and labor-saving, the working efficiency of the printing machine is improved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automatic feed supplement device of material book for printing machine, includes base (1), its characterized in that: be provided with actuating mechanism and feed mechanism on base (1), feed mechanism is used for rolling up material (18) and shift to the settlement position of printing machine, actuating mechanism can be connected with the feed mechanism transmission, actuating mechanism is used for driving feed mechanism to promote to roll up material (18) and drive material and roll up (18) and carry out transported substance material, be provided with locking mechanism (22) on the feed mechanism, locking mechanism (22) can be connected with feed mechanism hasp to carry out spacing locking to feed mechanism.

2. A roll automatic feeding device for printing machine roll according to claim 1, characterized in that: feed mechanism includes two (3) of supports and three (4) of supports, two (3) of supports and three (4) equal perpendicular and fixed connection are on base (1), dead axle rotation is connected with pivot (5) on two (3) of supports, pivot (5) are perpendicular with two (3) of supports, three (4) of supports, and pivot (5) run through support (3), the one end dead axle of directional three (4) of support of pivot (5) rotates and connects on three (4) of supports, the one end that three (4) of support were kept away from in pivot (5) is fixed with gear (7), be provided with locking mechanism on two (3) of supports, locking mechanism (22) can be connected with pivot (5) hasp to carry out spacing locking to pivot (5).

3. The automatic feeding device for a roll of printing machine material as claimed in claim 2, wherein: two feeding frame plates (6) are fixedly connected to the first rotating shaft (5), the first rotating shaft (5) is perpendicular to the middle of the feeding frame plates (6), the two feeding frame plates (6) are arranged in parallel, projections of the two feeding frame plates can be completely overlapped, U-shaped grooves (35) are formed in the side walls of the two ends of each feeding frame plate (6) by taking the circle center of the cross section of the first rotating shaft (5) as the symmetric center, end shafts (19) are fixed to the centers of the two ends of each material coil (18), and the end shafts (19) can be inserted into the U-shaped grooves (35) and can slide in the U-shaped grooves (35) and rotate in a fixed axis mode.

4. A roll automatic feeding device for printing machine as claimed in claim 3, characterized in that: the inner portion of the U-shaped groove (35) close to the straight side wall of the first rotating shaft (5) is provided with a sliding groove (36), the trend of the sliding groove (36) is perpendicular to the opening direction of the U-shaped groove (35), the sliding connection inside the sliding groove (36) is provided with a stopping rod (38), one end of the stopping rod (38) pointing to the inner portion of the sliding groove (36) is connected with the inner wall of the sliding groove (36) through a spring III (37), one end of the stopping rod (38) pointing to the U-shaped groove (35) is in a wedge shape, the wedge surface faces to the opening side of the U-shaped groove (35), a through groove (40) communicated with the sliding groove (36) is formed in the position, corresponding to the sliding groove (36), of the through groove (40) is parallel to the trend of the sliding groove (36), a push rod (39) is inserted into the through groove (40), and the push rod (39) can slide in the through, and the push rod (39) is fixedly connected with the retaining rod (38).

5. A roll automatic feeding device for printing machine as claimed in claim 3, characterized in that: the driving mechanism comprises a motor (8) and a cylinder (10), the motor (8) is fixed at the upper end of a first support (2), the first support (2) is fixed on the base (1), and the first bracket (2) and the third bracket (4) are positioned at the two sides of the second bracket (3), an output shaft end of the motor (8) is fixedly connected with a tooth column (9), the cylinder (10) is fixed at the upper end of the second bracket (3), the piston rod end of the cylinder (10) is vertically and fixedly connected with a deflector rod (11), a cantilever (13) is fixed on the second bracket (3), a first touch switch (12) and a second touch switch (21) are fixed on the cantilever (13), the shifting lever (11) is positioned between the first touch switch (12) and the second touch switch (21), the shift lever (11) can be respectively buckled and contacted with the first touch switch (12) and the second touch switch (21); the locking mechanism comprises a fluted disc (23) fixed on the first rotating shaft (5), two convex rods (24) are fixed on the outer peripheral wall of the fluted disc (23) at equal intervals, a first guide frame (25) and a second guide frame (29) are fixed on the second bracket (3), a top rod (26) is connected on the first guide frame (25) in a sliding manner, the top rod (26) is vertical to the first rotating shaft (5), the convex rod (24) can be in abutting contact with one end of the top rod (26) pointing to the fluted disc (23), and one ends of the convex rod (24) and the ejector rod (26) pointing to the fluted disc (23) are hemispherical, one end of the ejector rod (26) far away from the fluted disc (23) is connected with the first guide frame (25) through a first spring (27), a third touch switch (28) is fixed on the second support (3), one end of the ejector rod (26) far away from the fluted disc (23) can be in abutting contact with the touch switch III (28);

sliding connection has slide bar (30) on leading truck two (29), slide bar (30) set up with pivot one (5) mutually perpendicularly, the one end of the directional fluted disc (23) of slide bar (30) is fixed with pinion rack (31), and pinion rack (31) can be connected with fluted disc (23) meshing, pinion rack (31) are connected with leading truck two (29) through spring two (32).

6. A roll automatic feeding device for printing machine material roll according to claim 5, characterized in that: the driving mechanism further comprises a second rotating shaft (14), the second rotating shaft (14) is parallel to the first rotating shaft (5) and penetrates through the second support (3), the second rotating shaft (14) is fixedly connected onto the second support (3) in a shaft rotating mode, a second gear (15) is fixed at one end of the second rotating shaft (14) pointing to the first support (2), the second gear (15) is meshed with the tooth column (9), and the second gear (15) can be meshed with the first gear (7).

7. A roll automatic feeding device for printing machine material roll according to claim 6, characterized in that: one end of the directional support three (4) of second (14) of pivot is fixed with sleeve (17), be fixed with many arriss pole (20) on material book (18) the end axle (19) that is close to second (3) of support, sleeve (17) can overlap and establish and sliding connection be in on many arriss pole (20), the one pot head that second (14) of pivot is close to sleeve (17) is established and is fixed an axle and rotate and be connected with ring cover (16), the one end of the piston rod of cylinder (10) is kept away from in driving lever (11) is perpendicular and fixed connection with the periphery wall of ring cover (16).

8. A roll automatic feeding device for printing machine material roll according to claim 5, characterized in that: an iron plate (33) is fixed to one end, far away from the fluted disc (23), of the sliding rod (30), an electromagnetic plate (34) is fixed to the second support (3), and the electromagnetic plate (34) can be fixedly connected with the iron plate (33) through electromagnetic suction.

9. The automatic feeding device for a roll of printing machine material as claimed in claim 8, wherein: the electromagnetic switch is characterized by further comprising a controller, wherein a signal input end of the controller can be respectively and electrically connected with the first touch switch (12), the second touch switch (21) and the third touch switch (28), and an execution output end of the controller can be respectively and electrically connected with the motor (8), the cylinder (10) and the electromagnetic plate (34).

10. The use method of the automatic feeding device for the printing machine roll according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:

the method comprises the following steps: when the material roll (18) needs to be replaced, the locking limiting of the feeding mechanism is released through the locking mechanism, and the feeding mechanism is driven by the driving mechanism to feed the material roll (18);

step two: after the feeding is finished, the feeding mechanism is locked and limited through the locking mechanism, and a material roll (18) is driven by the driving mechanism to rotate for feeding;

step two: and (4) removing the used material roll (18) from the feeding mechanism and installing a new material roll (18) on the feeding mechanism as described in the second step and the third step.