CN211195295U

CN211195295U - Die cutting device of offset press

Info

Publication number: CN211195295U
Application number: CN201921949564.4U
Authority: CN
Inventors: 荣沉毅
Original assignee: Wuxi Hanmoyuan Printing Co ltd
Current assignee: Wuxi Hanmoyuan Printing Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-07
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a cutting device of offset press, its technical scheme main points are, set up the last mould pressing on the base including base and rotation, set up the intercommunication groove that communicates in the spout in the drum, it is provided with butt roller and lower mould compression roller to slide in the intercommunication groove, it passes through gear engagement to go up mould compression roller and lower mould compression roller and connects, it locates the drum that bears the weight of the axle including bearing axle and cover to go up the mould compression roller, the lateral surface cladding of drum has the die cutting blade, evenly be equipped with the baffle on the lateral surface of drum, be equipped with a plurality of permanent magnets in the space that two adjacent baffles and drum enclose, the spout has been seted up to the lateral wall of drum, the spout slides and is provided with the ejector pin pole, the butt pole is used for sliding to stretch out the spout to the tip of conflict ejector. The technology has the advantages that the die cutting blade is convenient to disassemble and replace, other auxiliary tools do not need to be contacted in the disassembling process, and time and labor are saved.

Description

Die cutting device of offset press

Technical Field

The utility model relates to a production technical field of label paper, more specifically say, it relates to a cutting device of offset press.

Background

When the offset press prints label products, an adhesive tape mechanism and a die cutting mechanism are required to be configured, a layer of adhesive tape composite layer is pasted on the surface of the paper tape after printing is completed through the adhesive tape mechanism, the paper tape after the completion of compounding is die-cut through the die cutting mechanism, and cutting lines are formed on the paper tape so as to facilitate the subsequent separation of the printed labels.

The die cutting roller has two structural forms, namely an integral type and a combined type. The integral die-cutting roller directly processes the cutting edges on the surface of the roller through special cutting edge grinding equipment, the cutting edges can be in a complex shape, a plurality of groups of cutting edges are uniformly distributed along the surface of the roller, but the thin and sharp cutting edges are extremely easy to wear, a die-cutting rule on the roller needs to be ground and maintained after the roller is used for a period of time, the downtime is long, and the production efficiency is influenced. The single blade of the combined die-cutting rule is fixed on the surface of the roller in modes of inlaying, inserting and the like.

The utility model patent with the publication number of CN204472080U discloses a die cutting device for rotary press, the disclosed information is:

the printed paper tape is attached to the gummed paper conveyed by the gummed paper feeding mechanism, and the attached coiled material is subjected to die cutting by the die device, detection by the detection mechanism, detection and winding;

the function of die cutting is to form cutting lines on the coiled material, so that the printed product can be conveniently separated from the composite paper tape to become the required products such as trademarks, labels and the like;

the die cutting device comprises a base, an upper die pressing roller and a lower die pressing roller which are arranged on the base, wherein the lower die pressing roller is driven by an external driving mechanism, and the lower die pressing roller drives the upper die pressing roller to synchronously move in opposite directions;

an electromagnet is arranged in the upper die pressing roller, a silicon steel sheet and a magnetic core which are used as the electromagnet are uniformly distributed in the upper die pressing roller, and after the magnetic core is electrified, electromagnetic force is generated through the silicon steel sheet;

the die-cutting rule piece is made of flexible metal material which can be adsorbed by magnetic force, is in a flat plate shape in an unfolded state, and is uniformly formed with bulges or grooves for die cutting;

when the magnetic core in the upper die pressing roller is electrified, the silicon steel sheet generates electromagnetic force to tightly adsorb the die-cutting blade on the surface of the upper die pressing roller;

in order to ensure that the relative deflection between the die cutting blade and the upper die pressing roller cannot be generated in the die cutting process, a pressing wheel mechanism is added.

Above-mentioned the utility model discloses in, because last compression roller constantly rotates, the electric wire for last compression roller interior electro-magnet power supply can receive the rotatory influence of last compression roller, consequently adopts the permanent magnet to replace the electro-magnet among the prior art more. When the permanent magnet is arranged in the upper die pressing roller, the suction force between the die cutting blade and the upper die pressing roller is too large, and other auxiliary tools are needed by workers when the workers are detached, so that time and labor are wasted.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a cutting device of offset press, it has the advantage that convenient to detach changed die cutting blade, and the process of dismantling need not contact other appurtenance, labour saving and time saving.

The utility model discloses a technical scheme realize like this: a die cutting device of an offset press comprises a base, an upper die pressing roller and a lower die pressing roller which are rotatably arranged on the base, the same ends of the upper die pressing roller and the lower die pressing roller are connected through gear engagement, the upper die pressing roller comprises a bearing shaft and a cylinder sleeved on the bearing shaft, the outer side surface of the cylinder is coated with rectangular die-cutting blades, a plurality of partition plates are uniformly arranged on the outer side surface of the cylinder, the clapboards are parallel to the central axis of the bearing shaft, a plurality of permanent magnets are arranged in the space enclosed by two adjacent clapboards and the cylinder, the side wall of the cylinder is provided with a sliding chute which is provided with a mandril in a sliding way, a communicating groove communicated with the sliding chute is arranged in the cylinder, the connecting device is characterized in that a butt connecting rod is arranged in the communicating groove in a sliding mode, the butt connecting rod is used for sliding to the end portion of the butt ejector rod to enable one end of the ejector rod to extend out of the sliding groove, and a driving assembly used for driving the butt connecting rod to slide is arranged on the side wall of the cylinder.

Through adopting foretell technical scheme, cutting device moves, and label paper passes from last compression roller and lower compression roller, and the die cutting blade cuts label paper, and when needs change die cutting blade, can the shut down and move cutting device, then promote the butt joint pole and slide to the conflict ejector pin to the one end that makes the ejector pin stretches out the spout and with die cutting piece jack-up, makes die cutting piece smoothly with drum and permanent magnet separation, thereby change die cutting piece that can be simple convenient, labour saving and time saving.

As a further improvement of the utility model, the butt pole is close to the one end of ejector pin is provided with first inclined plane, first inclined plane with the mutual butt of ejector pin just slides each other.

Through adopting foretell technical scheme, slide the in-process of the tip of contradicting the ejector pin to first inclined plane when the butt pole, can make the ejector pin slide along the first inclined plane of slope to the one end that makes the ejector pin stretches out the spout gradually outside and with die-cutting blade jack-up, so that die-cutting blade and drum and permanent magnet separation, thereby can dismantle the die-cutting blade simply conveniently.

As a further improvement, the drive assembly is including seting up in the slot of the lateral wall of drum and grafting cooperate in the inserted bar of slot, the slot communicate in the intercommunication groove, the butt rod is kept away from the one end of ejector pin is provided with the second inclined plane, the inserted bar is used for contradicting the second inclined plane is so that the butt rod slides to first inclined plane and contradicts the ejector pin.

Through adopting foretell technical scheme, when dismantling the die-cutting blade, can press the inserted bar so that the inserted bar contradicts the second inclined plane to make the butt pole slide to first inclined plane conflict ejector pin, the gliding in-process of butt pole, the tip of first inclined plane conflict ejector pin can make the ejector pin slide along first inclined plane and outwards ejecting to the spout, and then makes die-cutting blade and drum and permanent magnet separation.

As a further improvement, the limiting groove is formed in the groove wall of the sliding groove along the length direction of the sliding groove, and the side wall of the ejector rod is provided with a sliding fit with the limiting block of the limiting groove.

Through adopting foretell technical scheme, the cooperation of stopper and spacing groove makes the ejector pin can keep sliding with the spout and be connected for the ejector pin in-process that slides is more stable, avoids the ejector pin to withdraw from the spout.

As a further improvement, the storage tank has been seted up along the length direction of butt pole to the cell wall in intercommunication groove, the lateral wall of butt pole be provided with slide cooperate in the butt piece of storage tank, be provided with the spring in the storage tank, the one end of spring connect in the cell wall of storage tank, the other end connect in the lateral wall of butt piece, when the spring is in natural state, the butt pole with the ejector pin separation.

Through adopting foretell technical scheme, when dismantling the die-cutting blade, the staff presses down the inserted bar so that the butt pole slides to first inclined plane conflict ejector pin, the gliding in-process of butt pole, the tip of first inclined plane conflict ejector pin can make the ejector pin slide along first inclined plane and outwards ejecting to the spout, the spring is in compression state this moment, when loosening the inserted bar, the spring drives the butt pole under the effect of restoring force and resets, so that butt pole and ejector pin separation, and then make the ejector pin return in the spout, so that after the die-cutting blade installed the drum, the lateral wall of die-cutting blade laminated with the lateral surface of drum mutually.

As a further improvement of the present invention, the one end of the insertion rod away from the butt rod extends out of the slot, and the insertion rod extends out of the one end of the slot and is provided with the pressing head.

Through adopting foretell technical scheme, add the press head so that the staff presses the inserted bar through the hand, improved the comfort level of operation.

As a further improvement of the present invention, the side wall of the cylinder is provided with a bayonet communicated with the slot, and the pressing head is clamped and fitted to the bayonet.

Through adopting foretell technical scheme, the staff of being convenient for of setting of press head rotates the inserted bar so that.

As a further improvement, evenly distributed has a plurality of gag lever posts on the drum, a plurality of spacing holes have been seted up on the die-cutting rule piece, the gag lever post cooperatees with spacing hole looks joint, the gag lever post all sets up the edge at die-cutting rule piece length direction with spacing hole.

Through adopting foretell technical scheme, can be with the spacing hole on the die-cutting piece and gag lever post looks joint cooperation when installing the die-cutting piece to can accurate location when installing the die-cutting piece, the phenomenon of skew can not take place for the die-cutting piece, makes installation swift more convenient.

To sum up, the utility model discloses following beneficial effect has:

1. when the die-cutting blade is replaced, the abutting rod can be pushed to slide to the abutting ejector rod, so that one end of the ejector rod extends out of the sliding groove and jacks up the die-cutting blade, the die-cutting blade is smoothly separated from the cylinder and the permanent magnet, and the die-cutting blade can be simply and conveniently replaced;

2. pressing the inserted bar can make the inserted bar conflict second inclined plane to make the butt pole slide to first inclined plane conflict ejector pin, the gliding in-process of butt pole, the tip that the ejector pin was contradicted to first inclined plane can make the ejector pin slide along first inclined plane and outwards ejecting to the spout, and then makes die cutting blade and drum and permanent magnet separation.

Drawings

Fig. 1 is a schematic view of the overall structure of the die cutting apparatus in this embodiment;

FIG. 2 is a schematic view of the die cutting blade of FIG. 1 with the die cutting blade removed;

FIG. 3 is a partial sectional view of the cylinder of this embodiment;

fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: 1. a base; 2. pressing the die into a compression roller; 201. a load bearing shaft; 202. a cylinder; 203. die cutting a blade; 3. pressing rollers of the lower die; 4. a gear; 5. a drive motor; 6. a reduction motor; 7. a partition plate; 8. a permanent magnet; 9. a limiting rod; 10. a limiting hole; 11. a chute; 12. a top rod; 121. a third inclined surface; 13. a communicating groove; 14. a butting rod; 141. a first inclined surface; 142. a second inclined surface; 15. a limiting groove; 16. a limiting block; 17. a containing groove; 18. a butting block; 19. a spring; 20. inserting a rod; 21. a slot; 22. a pressing head; 23. and (5) buckling.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a cross cutting device of offset press, as shown in figure 1, install last compression roller 2 and lower compression roller 3 on base 1 including base 1 and rotation, it is parallel to each other with lower compression roller 3 to go up compression roller 2, go up the equal cover in one end of compression roller 2 and lower compression roller 3 and be equipped with gear 4, two gears 4 mesh are connected, install on the base 1 and be used for driving lower compression roller 3 pivoted driving motor 5, still install gear motor 6 on the base 1, driving motor 5's output shaft is in gear motor 6, gear motor 6's output shaft and lower compression roller 3 coaxial coupling.

Specifically, as shown in fig. 1 and 2, the upper die pressing roller 2 includes a bearing shaft 201 and a cylinder 202 sleeved on the bearing shaft 201, the outer side surface of the cylinder 202 is smooth, the outer side surface of the cylinder 202 is coated with a rectangular die-cutting blade 203, when the label paper is processed, the label paper passes through the upper die pressing roller 2 and the lower die pressing roller 3, and the upper die pressing roller 2 and the lower die pressing roller 3 are driven to rotate by a driving motor 5, so that the die-cutting blade 203 cuts the label paper.

The outer side surface of the cylinder 202 is uniformly provided with a plurality of partition plates 7, the partition plates 7 are arranged along the length direction of the cylinder 202, the partition plates 7 are parallel to the central axis of the bearing shaft 201, and a plurality of permanent magnets 8 are arranged in a space enclosed by two adjacent partition plates 7 and the cylinder 202. When the die-cutting blade 203 is mounted, the permanent magnet 8 attracts the die-cutting blade 203 so that the die-cutting blade 203 is firmly fixed to the cylinder 202. Meanwhile, a plurality of limiting rods 9 are circumferentially fixed at two ends of the cylinder 202 along the outer side surface of the cylinder 202, a plurality of limiting holes 10 are formed in the die-cutting tool, and the limiting rods 9 are in clamping fit with the limiting holes 10, so that the die-cutting blade 203 is prevented from deviating in the cutting process.

As shown in fig. 2 and 3, a chute 11 is formed in an outer surface of the cylinder 202, the chute 11 extends from the outer surface of the cylinder 202 toward a center line of the cylinder 202, and a jack 12 for jacking up the die-cutting blade 203 is slidably provided in the chute 11. The cylinder 202 is provided with a communicating groove 13 communicating with the sliding groove 11 along the axial length direction of the bearing shaft 201, and the communicating groove 13 is provided with a butt rod 14 slidably, in this embodiment, the butt rod 14 is disposed in a strip shape, and the butt rod 14 is used for sliding to the end of the butt rod 12 so as to make one end of the butt rod 12 extend out of the sliding groove 11. In order to make the sliding process of the ejector rod 12 more stable, a limiting groove 15 is formed in the groove wall of the sliding groove 11 along the length direction of the sliding groove 11, a limiting block 16 is integrally formed on the side wall of the ejector rod 12, and meanwhile, the limiting groove 15 and the limiting block 16 limit the ejector rod 12 to prevent the ejector rod 12 from exiting the sliding groove 11.

Specifically, as shown in fig. 3 and 4, a first inclined surface 141 is provided at one end of the abutting rod 14 close to the ejector rod 12, the first inclined surface 141 is used for abutting against an end of the ejector rod 12, so that in the sliding process of the abutting rod 14, the first ejector rod 12 moves along the first inclined surface 141, that is, when the abutting rod 14 is pushed to slide along the communication groove 13 toward the direction close to the ejector rod 12, the first inclined surface 141 abuts against the bottom surface of the ejector rod 12 so that one end of the ejector rod 12 extends out of the sliding groove 11, and then the die cutting blade 203 is jacked up, so that the die cutting blade 203 is separated from the permanent magnet 8. In order to make the relative sliding between the top rod 12 and the first inclined surface 141 smoother and more stable, the third inclined surface 121 matching with the first inclined surface 141 is added at the end of the top rod 12.

In addition, as shown in fig. 3 and 4, a receiving groove 17 is formed in a groove wall of the communication groove 13 along a length direction of the abutting rod 14, an abutting block 18 slidably engaged with the receiving groove 17 is disposed on a side wall of the abutting rod 14, and a spring 19 is disposed in the receiving groove 17 along an axial length direction of the bearing shaft 201, in this embodiment, there are two springs 19, and the springs 19 are used for returning the abutting rod 14. One end of the spring 19 is connected to a side wall of the accommodating groove 17 close to the top rod 12, and the other end is connected to a side wall of the abutting block 18, and when the spring 19 is in a natural state, the abutting rod 14 is separated from the top rod 12.

In addition, as shown in fig. 2 and 3, the side wall of the cylinder 202 is provided with a driving assembly for driving the abutting rod 14 to slide. Specifically, the driving assembly includes a slot 21 formed in the side wall of the cylinder 202 and an insertion rod 20 inserted into the slot 21, wherein the slot 21 is located at an end of the cylinder 202, and the slot 21 is communicated with the communicating groove 13; one end of the insert rod 20 extends out of the insertion groove 21. The end of the abutting rod 14 away from the insert rod 20 is provided with a second inclined surface 142, and the insert rod 20 is used for abutting against the second inclined surface 142 so that the abutting rod 14 slides until the first inclined surface 141 abuts against the top rod 12. In this embodiment, the second inclined surface 142 and the first inclined surface 141 are symmetrically disposed at two ends of the abutting rod 14, and the end of the insert rod 20 close to the abutting rod 14 is in arc transition, so that when the insert rod 20 is pressed, the insert rod 20 and the abutting rod 14 slide relatively more smoothly.

As shown in fig. 2 and 3, in order to facilitate the worker to press the insertion rod 20 so that the abutting rod 14 slides to abut against the top rod 12, a pressing head 22 is additionally disposed at one end of the insertion rod 20 extending out of the slot 21, thereby improving the comfort of operation. In addition, the bayonet socket that communicates in slot 21 is seted up to the lateral wall of drum 202, and press head 22 and bayonet socket joint cooperation, when pressing, cooperate through press head 22 and bayonet socket joint, so that inserted bar 20 can keep the conflict connecting rod, and then make the connecting rod can keep conflict ejector pin 12, ejector pin 12 is with die-cutting blade 203 jack-up, and then the staff of being convenient for carries out dismantlement work, in other embodiments, the external screw thread can be add to the lateral wall of inserted bar 20, the cell wall of slot 21 add with external screw thread screw-thread fit's internal thread, cooperate so that inserted bar 20 keeps fixed through external screw thread and internal screw thread, and then the staff of being convenient for carries out dismantlement work.

The overall working process is as follows: when the die-cutting blade 203 is detached, the insert rod 20 can be kept in contact with the abutting rod 14 by pressing the insert rod 20 to the pressing head 22 to be in clamping fit with the bayonet, so that the abutting rod 14 is kept in contact with the ejector rod 12, the ejector rod 12 jacks up the die-cutting blade 203, the die-cutting blade 203 is separated from the cylinder 202 and the permanent magnet 8, and a worker can detach the die-cutting blade 203 conveniently; after the disassembly is completed, the inserting rod 20 can be pulled to make the pressing head 22 exit from the bayonet, at this time, the spring 19 drives the abutting rod 14 to reset under the action of the restoring force, so that the abutting rod 14 is separated from the end of the ejector rod 12, at this time, the ejector rod 12 can return to the chute 11, and the die-cutting blade 203 is further conveniently installed and fixed on the cylinder 202.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a cross cutting device of offset press, include base (1) and rotate set up in last mould compression roller (2) and lower mould compression roller (3) on base (1), go up mould compression roller (2) and lower mould compression roller (3) with the one end pass through gear (4) meshing and connect, it locates to go up mould compression roller (2) including bearing axle (201) and cover bear drum (202) of axle (201), the lateral surface cladding of drum (202) has rectangular die cutting blade (203), evenly be equipped with a plurality of baffles (7) on the lateral surface of drum (202), baffle (7) are parallel with the axis that bears axle (201), adjacent two be equipped with a plurality of permanent magnet (8), its characterized in that in the space that baffle (7) and drum (202) enclose: the side wall of drum (202) has seted up spout (11), spout (11) slide and be provided with ejector pin (12), seted up in drum (202) communicate in communicating groove (13) of spout (11), it is provided with in communicating groove (13) butt joint pole (14) to slide, butt joint pole (14) are used for sliding to the tip of butt joint ejector pin (12) so that the one end of ejector pin (12) stretches out spout (11), the side wall of drum (202) is provided with and is used for the drive the gliding drive assembly of butt joint pole (14).

2. The die cutting device of an offset printing press according to claim 1, wherein: one end, close to the ejector rod (12), of the abutting rod (14) is provided with a first inclined surface (141), and the first inclined surface (141) and the ejector rod (12) are abutted to each other and slide to each other.

3. The die cutting device of an offset printing press according to claim 2, wherein: the driving assembly comprises a slot (21) formed in the side wall of the cylinder (202) and an inserting rod (20) in inserting fit with the slot (21), the slot (21) is communicated with the communicating groove (13), one end, away from the ejector rod (12), of the abutting rod (14) is provided with a second inclined surface (142), and the inserting rod (20) is used for abutting against the second inclined surface (142) so that the abutting rod (14) can slide to the first inclined surface (141) to abut against the ejector rod (12).

4. The die cutting device of an offset printing press according to claim 1, wherein: the wall of the sliding groove (11) is provided with a limiting groove (15) along the length direction of the sliding groove (11), and the side wall of the ejector rod (12) is provided with a limiting block (16) which is in sliding fit with the limiting groove (15).

5. The die cutting device of an offset printing press according to claim 1, wherein: a containing groove (17) is formed in the groove wall of the communicating groove (13) along the length direction of the abutting rod (14), an abutting block (18) in sliding fit with the containing groove (17) is arranged on the side wall of the abutting rod (14), a spring (19) is arranged in the containing groove (17), one end of the spring (19) is connected to the groove wall of the containing groove (17), the other end of the spring is connected to the side wall of the abutting block (18), and when the spring (19) is in a natural state, the abutting rod (14) is separated from the ejector rod (12).

6. The die cutting device of an offset printing press according to claim 3, wherein: one end, far away from the abutting rod (14), of the inserted rod (20) extends out of the insertion groove (21), and one end, extending out of the insertion groove (21), of the inserted rod (20) is provided with a pressing head (22).

7. The die cutting device of an offset printing press according to claim 6, wherein: the side wall of the cylinder (202) is provided with a bayonet communicated with the slot (21), and the pressing head (22) is in snap fit with the bayonet.

8. The die cutting device of an offset printing press according to claim 1, wherein: a plurality of limiting rods (9) are uniformly distributed on the cylinder (202), a plurality of limiting holes (10) are formed in the die cutting blade (203), the limiting rods (9) are matched with the limiting holes (10) in a clamping mode, and the limiting rods (9) and the limiting holes (10) are arranged at the edges of the die cutting blade (203) in the length direction.