CN213649079U

CN213649079U - Scraper device capable of quickly changing knife

Info

Publication number: CN213649079U
Application number: CN202021869228.1U
Authority: CN
Inventors: 何文涛
Original assignee: Jiaxing Ruima Packaging Technology Co ltd
Current assignee: Jiaxing Ruima Packaging Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-07-09
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a scraper device capable of changing knives rapidly, which comprises a frame and a knife shaft; at least two scrapers are detachably arranged on the surface of the cutter shaft, rotating shafts are arranged at two ends of the cutter shaft, friction rings are annularly arranged on the surfaces of the rotating shafts, a telescopic cylinder is arranged above the rotating shafts, the lower end of the telescopic cylinder is fixedly connected with a top pressing block, and the top pressing block is in a triangular shape gradually increasing from bottom to top; a U-shaped groove is horizontally formed in the rack, the rotating shaft is rotatably arranged in the U-shaped groove, a limiting block is further arranged in the U-shaped groove, the limiting block is in sliding fit and abuts against the surface of the rotating shaft, and the limiting block is horizontally connected with a hydraulic buffer; the rack is also provided with a locking bolt and a clamping pin respectively, the end part of the locking bolt is abutted against the surface of the rotating shaft, and the clamping pin is clamped on the side surface of one side of the limiting block back to the rotating shaft after being inserted into the U-shaped groove. Through the structure, the scraper of the working personnel is switched by only sequentially disassembling the locking bolt and the clamping pin → driving the telescopic cylinder to ascend and descend → installing the locking bolt and the clamping pin. The tool changing efficiency of the scraper is greatly improved.

Description

Scraper device capable of quickly changing knife

Technical Field

The utility model relates to a lithography apparatus, especially a but scraper device of quick tool changing.

Background

The doctor blade is a thin sheet on a printing machine for scraping off redundant ink on the surface of a roller and is divided into a metal part and a nonmetal part, the ink in a non-pattern area is removed in each printing process, the ink doctor blade needs to have wear resistance and high efficiency so as to ensure the high-quality of printing, and the ink doctor blade needs to be suitable for the lasting and high-speed requirements of modern gravure printing.

With the continuous increase of printing speed, the abrasion speed of the scraper is faster and faster. The frequency of the replacement of the scraper is higher and higher, and the normal operation of enterprise production is seriously influenced. Meanwhile, the existing knife rest has a complex structure and low scraper replacement efficiency, so that films in a printing machine can be completely scrapped as waste products when the knives are replaced.

SUMMERY OF THE UTILITY MODEL

In view of the above insufficiency, the present invention provides a scraper device capable of fast changing the blade, so as to solve the above insufficiency.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a scraper device capable of quickly changing a cutter comprises a frame and a cutter shaft; the surface of the cutter shaft is detachably provided with at least two scrapers, two ends of the cutter shaft are coaxially provided with a rotating shaft, the surface of the rotating shaft, which is close to one end of the cutter shaft, is annularly provided with a friction ring, a telescopic cylinder is longitudinally arranged above the rotating shaft, the lower end of the telescopic cylinder is fixedly connected with a top pressing block, and the top pressing block is in a triangular shape which is gradually increased from bottom to top; a U-shaped groove is horizontally formed in the upper part of the rack, the rotating shaft is rotatably arranged in the U-shaped groove, a limiting block is further arranged in the U-shaped groove, the limiting block is in sliding fit with the surface of the rotating shaft in a propping manner, and a hydraulic buffer is horizontally connected to the side surface of the limiting block, which is back to the rotating shaft; still be provided with the locking bolt respectively in the frame and sell with the screens, the tip butt of locking bolt is in the pivot surface, screens round pin inserts the joint in the side of stopper pivot one side dorsad behind the U type groove on.

Furthermore, polygonal insertion holes are formed in the end face of the rotating shaft, the scraper device further comprises an adjusting crank, and the end portion of the adjusting crank can be inserted into the insertion holes in an adaptive mode.

The working principle is as follows: when a tool change is required, the operator pauses the operation of the printing press. Then the locking bolt and the clamping pin are detached, and then the telescopic rod of the telescopic cylinder is driven to extend downwards. The pressing block arranged at the lower end of the telescopic cylinder is immediately pressed on the friction ring, the pressing block gradually sinks, the cutter shaft is horizontally ejected by the horizontal separation of the pressing block, and the scraper is separated from the contact with the plate printing roller. Meanwhile, in the process of horizontally jacking the cutter shaft, the hydraulic buffer exerts stable and large resistance on the rotary shaft through the limiting block, and the resistance causes that a large friction action can be generated between the jacking block and the friction ring, so that the jacking block can drive the rotary shaft to rotate in the descending process. The rotation of the rotating shaft can be converted into the rotation of the cutter shaft, and then the scraper can be switched. And when the telescopic cylinder descends to the right position, the telescopic cylinder is quickly recovered, and in the recovery process, the hydraulic buffer is slower in recovery, namely the friction force between the top pressing block and the friction ring is smaller, so that the rotating shaft cannot rotate. When the rotating shaft loses the action of the top pressing block, the hydraulic buffer drives the limiting block to gradually return to the initial state. And finally, the worker installs the locking bolt and the clamping pin in place again to finish the tool changing work of the scraper.

Has the advantages that: through the structure, the worker only needs to sequentially detach the locking bolt and the clamping pin → drive the telescopic cylinder to ascend and descend → install the locking bolt and the clamping pin for switching the scraper. The tool changing efficiency of the scraper is greatly improved. The production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a left side view of the present invention.

Reference numerals: 1. the hydraulic machine comprises a machine frame 2, a cutter shaft 3, a scraper 4, a rotating shaft 5, a friction ring 6, a telescopic cylinder 7, a top pressing block 8, a U-shaped groove 9, a limiting block 10, a hydraulic buffer 11, a locking bolt 12, a clamping pin 13, a jack 14 and an adjusting crank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The scraper device capable of rapidly changing the cutter as shown in fig. 1 to 3 comprises a frame 1 and a cutter shaft 2, wherein at least two scrapers 3 are detachably arranged on the surface of the cutter shaft. And two ends of the cutter shaft are respectively and coaxially provided with a rotating shaft 4. One end of the rotating shaft close to the cutter shaft is provided with a circle of friction ring 5. Meanwhile, a telescopic cylinder 6 is longitudinally arranged above the rotating shaft, the telescopic rod of the telescopic cylinder faces downwards, and a top pressing block 7 is fixedly connected to the end part of the telescopic cylinder and is in a triangular shape gradually increasing from bottom to top. When the pressing block descends, the surface of the pressing block can abut against the friction ring. In addition, as shown in fig. 2, a U-shaped groove 8 is horizontally formed at the upper portion of the housing. The rotating shaft is rotatably inserted in the U-shaped groove. It should be noted that a limiting block 9 for limiting the position of the rotating shaft is further disposed in the U-shaped groove. Specifically, the side face of the limiting block facing the rotating shaft is arc-shaped and is in sliding fit with the rotating shaft. And the side surface of the limiting block, which is back to the rotating shaft, is horizontally connected with a hydraulic buffer 10, and the hydraulic buffer has a damping and buffering effect. The hydraulic buffer can be ensured to slowly shrink after being pressed. When the external force disappears, the hydraulic buffer will return to the original state under the action of the internal energy-storing spring (not shown in the figure). Finally, to prevent the knife shaft from rotating and changing its position during the printing process. The frame is also provided with a locking bolt 11 and a clamping pin 12. The locking bolt is in threaded connection with the rack, and the end of the locking bolt abuts against the surface of the rotating shaft after being screwed into the rack so as to prevent the rotating shaft from rotating. And the clamping pin penetrates into the U-shaped groove and then is clamped on the side surface of the limiting block, which is back to one side of the rotating shaft, so as to play a role in blocking.

As a further improvement of the above embodiment, a polygonal insertion hole 13 is provided in the end surface of the rotating shaft in order to facilitate fine adjustment of the blade angle by a worker. Meanwhile, the utility model also comprises an adjusting crank 14. The adjusting crank is Z-shaped, and one end of the crank can be inserted into the insertion hole in a matching mode.

Claims

1. The utility model provides a but scraper device of quick tool changing which characterized in that: comprises a frame and a cutter shaft; the surface of the cutter shaft is detachably provided with at least two scrapers, two ends of the cutter shaft are coaxially provided with a rotating shaft, the surface of the rotating shaft, which is close to one end of the cutter shaft, is annularly provided with a friction ring, a telescopic cylinder is longitudinally arranged above the rotating shaft, the lower end of the telescopic cylinder is fixedly connected with a top pressing block, and the top pressing block is in a triangular shape which is gradually increased from bottom to top; a U-shaped groove is horizontally formed in the upper part of the rack, the rotating shaft is rotatably arranged in the U-shaped groove, a limiting block is further arranged in the U-shaped groove, the limiting block is in sliding fit with the surface of the rotating shaft in a propping manner, and a hydraulic buffer is horizontally connected to the side surface of the limiting block, which is back to the rotating shaft; still be provided with the locking bolt respectively in the frame and sell with the screens, the tip butt of locking bolt is in the pivot surface, screens round pin inserts the joint in the side of stopper pivot one side dorsad behind the U type groove on.

2. A quick tool change doctor apparatus as claimed in claim 1, wherein: the end face of the rotating shaft is provided with a polygonal jack, the scraper device further comprises an adjusting crank, and the end part of the adjusting crank can be adaptively inserted into the jack.