WO2020140346A1

WO2020140346A1 - Upper automatic plate exchanging device of book roll-fed printing press

Info

Publication number: WO2020140346A1
Application number: PCT/CN2019/084321
Authority: WO
Inventors: 刘怡丰; 聂军平; 彭勇; 陆金辉
Original assignee: 高斯图文印刷系统（中国）有限公司
Priority date: 2018-12-31
Filing date: 2019-04-25
Publication date: 2020-07-09
Also published as: CN109591454B; CN109591454A

Abstract

Disclosed is an upper automatic plate exchanging device of a book roll-fed printing press. The device is used for the mounting and dismounting of a printing plate (10) of an upper plate cylinder (100) of the printing press, and comprises a printing plate locking mechanism (1), a cam clutch mechanism (2), a plate pressing roller mechanism (3), a plate box (4) and a plate box pushing mechanism (5). The printing plate locking mechanism (1) locks or releases a tip of the printing plate (10) in/from a printing plate mounting slot. The cam clutch mechanism (2) realizes the pressing or releasing of the printing plate locking mechanism (1). The plate pressing roller mechanism (3) presses the printing plate (10) tightly against a surface of the upper plate cylinder (100). The plate box (4) is arranged obliquely between two side wall panels of the printing press in a manner where same rises from front to back; the plate box (4) is provided with an upper plate guide mechanism, a plate pushing mechanism, a lower plate guide mechanism and a plate dismounting mechanism; the upper plate guide mechanism forms a plate mounting channel; and the lower plate guide mechanism forms a plate dismounting channel. The plate box pushing mechanism (5) can realize the positional shift of the plate box (4) from the outside of one side wall panel to between two side wall panels. The upper automatic plate exchanging device of the present invention can greatly improve the working efficiency of mounting and dismounting the printing plates and the positioning accuracy of the printing plates.

Description

Automatic upper plate changing device of book and web printing machine

Technical field

The invention relates to an upper automatic plate changing device of a book and web printing machine.

Background technique

At present, the printing plate replacement operation of the book and web printing machine is done manually. The plate installation process is as follows: first press the [JOG] button, the plate cylinder is turned to a suitable plate installation position, insert the front end of the plate bite into the plate installation slot of the plate cylinder, and then close the rubber cylinder , Hold the end of the printing plate, and jog the printing machine to make the plate installation slot of the plate cylinder turn to a proper position to stop, insert the end of the plate into the plate installation slot, and then gently use a rubber hammer Knock the edges of the printing plate flat and solid. The unloading process is as follows: the rubber cylinder is depressurized, the printing machine is jogged, the plate cylinder is turned to the appropriate position for unloading the plate, the tail end of the plate is pulled out with a vacuum suction head, and the [reverse point] button is pressed, the plate cylinder Rotate in the reverse direction to turn the plate cylinder to the plate mounting slot and take out the front of the plate.

The above manual loading and unloading of printing plates has many shortcomings: first, due to the different proficiency of each worker, even the most skilled worker takes at least 3 minutes to load and unload a printing plate, and so on, the printing plate loading and unloading process of a printing equipment is It takes about 30 minutes, and the work efficiency is too low; secondly, the technical level of the workers is different, and the positioning accuracy of the printing plate must have different degrees of error during plate installation, which affects the printing quality; in addition, due to the need for vacuum suction when unloading the plate, etc. Tools can easily cause the wear of the printing plate and reduce the service life of the printing plate.

Summary of the invention

The object of the present invention is to provide an upper automatic plate changing device for a book and web printing machine, which can not only greatly improve the working efficiency of loading and unloading printing plates, but also ensure the positioning accuracy of the printing plates.

The technical solution for achieving the above object is: an upper automatic plate-changing device for a book and web printing machine. The book and web printing machine includes an upper plate cylinder, a lower plate cylinder, and two rubber cylinders. The plate cylinder, the two rubber cylinders and the lower plate cylinder are arranged in an inclined order from top to bottom, so that the center line of the upper plate cylinder, the two rubber cylinders and the lower plate cylinder are inclined at an angle of 15 degrees from the vertical The automatic plate changing device is used for loading and unloading the printing plate of the upper plate cylinder and includes a plate locking mechanism, a cam clutch mechanism, a platen roller mechanism, a plate box and a plate box pushing mechanism; wherein,

The plate locking mechanism is installed in the plate installation groove of the upper plate cylinder, and the tip of the plate is locked or released in the plate installation groove of the upper plate cylinder;

There are two sets of the cam clutch mechanism, which are installed on the inner sides of the wall panels on both sides to realize the pressing or releasing of the plate locking mechanism;

The platen roller mechanism is installed between the upper parts of the wall plates on both sides, so that the plate is pressed tightly against the surface of the upper plate cylinder;

The plate box is arranged obliquely between the two side wall panels of the printing machine in a front-bottom-back-up manner. The plate box is divided into an upper plate box and a lower plate box. The plate box is provided with an upper plate guide mechanism and a plate pushing mechanism 、Under the guide and unloading mechanism;

The upper guide plate mechanism is set on the upper plate box to form a plate mounting channel, and drives the printing plate in the upper plate box to approach the upper plate cylinder; the printing plate in the upper plate box is in a graphic-face-down manner place;

The plate pushing mechanism is set on the upper plate box and pushes the printing plate in the plate mounting channel into the plate mounting groove of the upper plate cylinder;

The lower guide plate mechanism is provided on the lower plate box to form a plate discharge channel, and drives the plate removed from the upper plate cylinder into the lower plate box; the plate in the lower plate box is face down Way to enter

The plate unloading mechanism is provided on the lower plate box to remove the plate from the plate mounting groove of the upper plate cylinder and push it into the plate unloading channel;

The plate box pushing mechanism realizes the position conversion of the plate box from the outside of one side wall panel to the side wall panels.

The upper automatic plate changing device of the above-mentioned book and web printing machine, wherein the plate locking mechanism includes a plate clamp rotating shaft, a plurality of spring plates, a pair of plate-retaining pins, a pair of rocker arms, a pair of support rollers and A pair of return springs; wherein, the plate clamp rotating shaft is embedded in the plate mounting groove of the upper plate cylinder; a plurality of spring plates are evenly installed on the outer surface of the plate clamp rotating shaft along the length direction of the plate clamping rotating shaft; The opposite plate pins are respectively fixed on the two end surfaces of the upper plate cylinder; a pair of rocker arms are respectively fixed on the shaft ends of the plate clamp rotating shaft, and the other ends of the pair of rocker arms are respectively located on a pair of plate plate pins The inner side of the pair; a pair of support rollers are respectively installed in the middle of a pair of rocker arms; a pair of return springs are butterfly springs and are respectively installed on both end surfaces of the upper plate cylinder through fixing pins. Correspondingly against the shaft ends of the upper plate cylinder at both ends and the inner surface of the other end of the pair of rocker arms;

The rotation of the rotation axis of the plate holder drives the spring plate to swing, so that the tip of the printing plate is locked or released from the front end of the printing plate in the printing plate installation groove of the upper printing plate cylinder.

The above automatic plate changing device of the book and web printing machine, wherein the cam clutch mechanism includes a bracket, a cam cylinder, a cam seat and a cam; the bracket is installed on the inner side of the wallboard; The cam cylinder is mounted on the bracket through a cylinder seat, the cam seat is hinged on the bracket, one end of the cam seat is connected to the end of the telescopic rod of the cam cylinder; the cam is connected to the cam seat The other end of the connection;

The expansion and contraction of the telescopic rod of the cam cylinder causes the cam seat to rotate, thereby driving the cam to press or release the support roller of the plate locking mechanism.

The upper automatic plate changing device of the above-mentioned book and web printing machine, wherein the platen roller mechanism includes two platen roller drive cylinders, two pairs of pillars, two push plates and platen rollers; two platen rollers The cylinders are installed on the inner surface of the wall plates on both sides through a pile head; the two pairs of pillars are installed on the inner surfaces of the wall plates on both sides; one end of the two push plates and the piston rods of the two platen roller cylinders Connected to the ends of the two push plates, each forming a waist-shaped hole on each of the two push plates and installed on the two pairs of pillars in correspondence with each other through two hinged hole bolts; the two ends of the platen roller are respectively connected to the two push plates The other end of the connection;

The platen roller presses the plate tightly against the surface of the upper plate cylinder through two platen roller cylinders.

The upper automatic plate changing device of the above-mentioned book and web printing machine, wherein,

The upper plate guide mechanism includes an upper cover plate, a pair of front sliders, a pair of rear slide plates, an upper connecting shaft and an upper pallet; the upper cover plate is fixed on the top surface of the plate box; a pair of front The sliders are respectively located on the inner sides of the side plates on both sides of the plate box and are embedded in the front waist grooves formed on the front upper portions of the side plates on both sides of the plate box; a pair of rear sliders are located on both sides of the plate box The inner side of the plate is embedded in the rear waist groove formed on the rear upper part of the side plates on both sides of the plate box; the upper connecting shaft is inserted through a hole formed in a pair of rear sliders; the upper support plate Installed on the top surfaces of a pair of front sliders and a pair of rear sliders to form a plate mounting channel between the upper pallet and the upper cover plate;

The plate pushing mechanism includes a plate pushing cylinder, a pair of upper racks, a pair of upper gears, a pair of plate baffles, a pressing rod, a pressing plate brush, and a pressing rod cylinder; one end of the plate pushing cylinder is fixed at On a side plate of the plate box, the piston rod of the plate pushing cylinder is connected to the front end of a rear slider on the same side of the plate pushing cylinder through a connecting pin; a pair of upper racks are fixed on both sides of the plate box The outer surface of the side plate; a pair of upper gears each mesh with a pair of upper racks and are installed at both ends of the upper connecting shaft; a pair of plate baffles are installed in front of the upper pallet through baffle cylinders The middle of the part; the two ends of the pressing rod correspond to the two ends of the platen brush through a connecting rod; one end of the pressing rod cylinder is installed on a side plate of the plate box, and the other end is A connecting rod located on the same side of the pressure cylinder;

The lower guide plate mechanism includes a lower cover plate, a lower support plate, a pair of lower sliders, a lower connecting shaft, and a front guide plate; the lower cover plate is fixed in the middle of the plate box and located below the upper support plate The lower pallet is fixed to the lower part of the plate box, so that a plate discharge channel is formed between the lower pallet and the lower cover plate; a pair of lower sliders are located on the inner sides of the side plates on both sides of the plate box and each Embedded in the lower waist-shaped groove opened on the front lower part of the side plates on both sides of the plate box; the lower connecting shaft is inserted through a hole formed in a pair of lower sliders; the front guide plate is installed on a pair of lower sliders On the top of

The plate unloading mechanism includes a plate unloading cylinder, a pair of lower racks, a pair of lower gears, and a rear guide plate; one end of the plate unloading cylinder is installed on a side plate of the plate box, and the piston of the plate unloading cylinder The rod is connected to the rear end of a lower slider located on the same side of the plate discharge cylinder through a connecting pin; a pair of lower racks are fixed on the outer sides of the side plates on both sides of the plate box; The lower rack meshes and is respectively installed at both ends of the lower connecting shaft; the rear guide plate is installed above the front guide plate through the rear guide plate cylinder.

The upper automatic plate changing device of the above-mentioned book and web printing machine, wherein the plate box pushing mechanism includes an upper guide rail, a lower guide rail, a left side plate, a right side plate, a rotating shaft and a pair of plate box pushing cylinders; The upper guide rail is installed between the back of the top surface of the side wall panels on both sides through the support plate and extends to the outside of one side wall panel, and the lower guide rail is installed between the middle of the rear side walls of the two side wall panels and extends to a The outside of the side wall panel; the outer ends of the upper rail and the lower rail are connected by a connecting plate; the spacing between the left side panel and the right side panel is greater than the spacing between the side panels on both sides of the plate box, so that the plate The box is arranged between the left side plate and the right side plate, and the left side plate and the right side plate are respectively installed between the upper guide rail and the lower guide rail through a ball slider; the rotating shaft is inserted through the side plates on both sides of the plate box In the middle of the, the two ends of the rotating shaft are fixed on the left side plate and the right side plate respectively; a pair of plate pushing cylinders are respectively fixed on the inner side of the left side plate and the inner side of the right side plate, the The ends of the piston rods of the pair of plate boxes pushing the cylinder are hinged to the rear outer sides of the side plates on both sides of the plate box.

In the upper automatic plate changing device of the above-mentioned book and web printing machine, a top plate is further provided between the lower guide rail and one side wall plate.

The above automatic plate-changing device for a book and web roll printing machine, wherein the automatic plate-changing device further includes two sets of plate box angle adjusting mechanisms that are respectively installed on the inner sides of the side wall panels.

The upper automatic plate changing device of the book and web printing machine of the invention has the following advantages:

1. Greatly improve the working efficiency of loading and unloading printing plates. For a printing unit, it only takes 25 seconds to realize the loading and unloading of all printing plates;

2. Avoid the accuracy error of plate installation. Due to the positioning device that controls the printing plate, the positioning accuracy of the printing plate can be guaranteed during the installation of the printing plate and the printing quality can be improved;

3. Reduce the wear of the printing plate, do not use other tools, avoid the wear of the printing plate due to the tool, make the printing plate reusable, and increase the service life of the printing plate;

4. Save manpower cost and make it easier for workers to operate.

BRIEF DESCRIPTION

1 is a schematic structural view of an upper automatic plate changing device of a book and web printing machine of the present invention;

2a is a schematic structural view of the plate locking mechanism in the upper automatic plate changing device of the book and web printing machine of the present invention;

Figure 2b is a side view of Figure 2a;

3a is a schematic structural diagram of a cam clutch mechanism in an upper automatic plate changing device of a book and web printing machine of the present invention;

Figure 3b is a top view of Figure 3a;

4a is a schematic structural view of a plate box in an upper automatic plate changing device of a book web printing machine of the present invention;

Figure 4b is a top view of Figure 4a (planned development);

5a is a schematic structural view of the plate box pushing mechanism in the upper automatic plate changing device of the book and web printing machine of the present invention;

Figure 5b is a right side view of Figure 5a;

6a is a schematic structural diagram of a plate angle adjusting mechanism in an upper automatic plate changing device of a book and web printing machine of the present invention;

Fig. 6b is a side view of Fig. 6a.

detailed description

The present invention will be further described below with reference to the drawings.

The book web printing machine according to the present invention includes an upper plate cylinder, a lower plate cylinder and two rubber cylinders. The upper plate cylinder 100, two

rubber cylinders

200, 300 and the lower plate cylinder 400 are sequentially from top to bottom Arranged vertically, the center line of the upper plate cylinder 100, the two

rubber cylinders

200, 300 and the lower plate cylinder 400 is inclined at an angle of 15 degrees to the vertical direction.

Referring to FIG. 1, the upper automatic plate changing device of the book and web printing machine of the present invention is used for loading and unloading the printing plates of the upper plate cylinder 100 and includes a plate locking mechanism 1, a cam clutch mechanism 2, Platen roller mechanism 3, plate box 4 and plate box pushing mechanism 5.

The plate locking mechanism 1 is installed on the upper plate cylinder 100. The plate locking mechanism 1 includes a plate holder rotating shaft 11, a plurality of spring plates 12, a pair of plate pins 13, a pair of rocker arms 14, and a pair of support rollers 15 and a pair of return springs 16; among them: the plate holder rotating shaft 11 is embedded in the plate mounting groove of the upper plate cylinder 100; a plurality of spring pieces 12 are evenly distributed on the plate holder rotating shaft 11 along the length of the plate holder rotating shaft 11 On the outer surface of the pair; a pair of plate pins 13 are fixed on both end surfaces of the upper plate cylinder 100; one end of a pair of rocker arms 14 is fixed on both end shaft ends of the plate clamp rotating shaft 11, the pair of rocker arms The other ends of 14 are located inside the pair of plate pins 13 respectively; a pair of support rollers 15 are each installed in the middle of the pair of rocker arms 13; a pair of return springs 16 are butterfly springs and are each mounted on the upper plate through fixing pins On both end surfaces of the cylinder 100, the two ends of the pair of return springs 16 abut each other on the shaft ends of the upper plate cylinder 100 at both ends and the inner surface of the other end of the rocker arm 14 (see FIGS. 2a and 2b) ).

Both ends of the upper plate cylinder 100 can respectively control the rotation of the plate clamp rotating shaft 11 to drive the swinging of the spring plate 12 to lock the tip of the plate 10 in the plate mounting groove of the upper plate cylinder 100 to the front end of the plate or open.

There are two sets of cam clutch mechanism 2 and they are installed on the inner sides of the wall panels 500 and 500' on each side; each set of cam clutch mechanism 2 includes a bracket 21, a cam cylinder 22, a cam seat 24 and a cam 25 (25'), in which: The bracket 21 is mounted on the wall panel 500; the cam cylinder 22 is mounted on the bracket 21 through the cylinder seat 23; the cam seat 24 is hinged on the bracket 21, and one end of the cam seat 24 is connected to the end of the telescopic rod of the cam cylinder 22 Connection; cam 25 (25') is connected to the other end of the cam base 24 (see Figures 3a and 3b); the arc length of the cam 25 is greater than that of the cam 25'.

The expansion and contraction of the cam cylinder 22 causes the cam base 24 to rotate, thereby driving the cam 25 (25') to press or release the support roller 15 in the plate locking mechanism 1. The cam 25 is used when installing the plate, and the cam 25' is used when removing the plate.

The platen roller mechanism 3 is installed between the upper parts of the wall plates 500, 500' on both sides. The platen roller mechanism 3 includes two platen roller drive cylinders 31, two pairs of pillars 32, two push plates 33, and platen roller 30 ; The two platen roller cylinders 31 are each installed on the inner surface of the side wall panels 500, 500' through a pile head 34; the two pairs of pillars 32 are respectively installed on the inner surface of the side wall panels 500, 500'; One end of the two push plates 33 is connected to the ends of the piston rods of the two platen roller cylinders 31 respectively. The two push plates 33 are each provided with a waist-shaped hole and correspond to each other through two hinge hole bolts 35. Installed on two pairs of pillars 32; the two ends of the platen roller 30 are respectively connected to the other ends of the two push plates 33;

The platen roller 30 presses the plate 10 tightly against the surface of the upper plate cylinder 100 by the two platen roller cylinders 31.

The plate box 4 is arranged obliquely between the wall plates 500, 500' on both sides of the printing press in a front-to-bottom and back-up manner. The plate box 4 is divided into an upper plate box and a lower plate box, and the plate box 4 is provided with an upper guide plate Institutions, push plate mechanism, lower guide plate mechanism and unloading plate mechanism.

The upper guide plate mechanism is set on the upper plate box, and drives the printing plate located in the upper plate box to approach the upper plate cylinder 100; the upper guide plate mechanism includes an upper cover 411, a pair of front sliders 412, and a pair of rear sliders 413 , The upper connecting shaft 414 and the upper support plate 415; wherein, the upper cover plate 411 is fixed on the top surface of the plate box 4; a pair of front sliders 412 are located inside the side plates 40 on both sides of the plate box 4 and embedded in each The front waist-shaped grooves opened on the front upper part of the side plates 40 on both sides of the plate box 4; a pair of rear sliders 413 are located inside the side plates 40 on both sides of the plate box 4 and are respectively embedded on both sides of the plate box 4 The rear waist-shaped groove opened in the upper rear part of the plate 40; the upper connecting shaft 414 is inserted into the perforations opened in the pair of rear sliders 413; the upper supporting plate 415 is installed in the pair of front sliders 412 and the pair of rear sliders 413 On the top surface of the top, a plate mounting channel is formed between the upper pallet 415 and the upper cover plate 411; the printing plates in the upper plate box are placed with the graphic face down.

The plate pushing mechanism is set on the upper plate box and pushes the plate in the plate mounting channel into the installation groove of the upper plate cylinder 100; the plate pushing mechanism includes a plate pushing cylinder 421, a pair of upper racks 422, and a pair of upper gears 423, the printing plate baffle 424, the pressing rod 426, the pressing brush 427 and the pressing rod cylinder 428; wherein, one end of the plate pushing cylinder 421 is fixed on a side plate 40 of the plate box 4, the piston of the plate pushing cylinder 421 The end of the rod is connected to the front end of a rear slider 413 on the same side of the push cylinder 421 through a connecting pin; a pair of upper racks 422 are fixed on the outer sides of the side plates 40 on both sides of the plate box 4; The upper gears 423 each mesh with a pair of upper racks 422 and are installed at both ends of an upper connecting shaft 414; the plate baffle 424 is installed at the front middle position of the upper bracket 414 through the baffle cylinder 425; The two ends are in one-to-one correspondence with the two ends of the platen brush 427 through a connecting rod; the pressure rod cylinder 428 is installed on a side plate 40 of the plate box 4, the end of the piston rod of the pressure rod cylinder 428 is A connecting rod on the same side as the pressure cylinder 428 is connected.

The lower guide plate mechanism is provided on the lower plate box, and drives the printing plate removed from the upper plate cylinder 100 into the lower plate box; the lower guide plate mechanism includes the lower guide plate mechanism including a lower cover plate 431, a lower support plate 432, A pair of lower sliders 433, a lower connecting shaft and a front guide plate 434; wherein, the lower cover plate 431 is fixed in the middle of the plate box 4 and below the upper plate 414; the lower plate 432 is fixed in the lower part of the plate box 4, so that A plate discharge channel is formed between the lower pallet 432 and the lower cover plate 431; a pair of lower sliders 433 are each located inside the side plates 40 on both sides of the plate box 4 and are respectively embedded in front of the side plates 40 on both sides of the plate box 4 The lower waist-shaped groove opened at the lower part; the lower connecting shaft is inserted through the perforations opened in the pair of lower sliders 433; the front guide plate 434 is installed on the top surface of the pair of lower sliders 433; the printing plate in the lower plate box is Graphically face down to enter;

The plate unloading mechanism is set on the lower plate box to remove the printing plate 10 from the installation groove of the upper plate cylinder 100 and push it into the plate unloading channel; the plate unloading mechanism includes a plate unloading cylinder 441, a pair of lower racks 442, A pair of lower gears 443 and a rear guide plate 444; wherein, one end of the unloading cylinder 441 is installed on a side plate 40 of the plate box 4, the piston rod of the unloading cylinder 441 is connected with a cylinder located on the same side of the unloading cylinder 441 through a connecting pin The rear end of the lower slider 433 is connected; a pair of lower racks 442 are fixed on the outer sides of the side plates 40 on both sides of the plate box 4; a pair of lower gears 443 each mesh with a pair of lower racks 442 and are respectively mounted on the lower connection At both ends of the shaft 434, the rear guide plate 444 is installed above the front guide plate 434 through the rear guide plate cylinder 445 (see FIGS. 4a and 4b).

The plate box pushing mechanism 5 realizes the position conversion of the plate box 4 from the outside of one side wall plate 500' to the side wall plates 500, 500'; the plate box pushing mechanism includes an upper rail 501, a lower rail 502, and a left side plate 503 , The right side plate 504, a rotary shaft 505 and a pair of plate boxes to push the cylinder 506; wherein, the upper rail 501 is installed between the rear of the top surfaces of the side wall panels 500, 500' through the support plate 507 and extends to a Outside the side wall panel 500', the lower rail 502 is installed between the middle of the rear sides of the side wall panels 500, 500' and extends to the outside of the side wall panel 500', and the outer ends of the upper rail 501 and the lower rail 502 It is connected by a connecting plate 508, and a top plate 509 is provided between the lower rail 502 and the wall plate 500' for supporting the upper rail 501 and the lower rail 502, and an adjusting screw 510 is also provided between the top plate 509 and the wall plate; left The distance between the side plate 503 and the right side plate 504 is greater than the distance between the side plates 40 on both sides of the plate box 4, so that the plate box 4 is provided between the left side plate 503 and the right side plate 504, and the left side plate 503 and the right side plate 504 Each is installed between the upper rail 501 and the lower rail 502 through a ball slider; a rotating shaft 505 is inserted in the middle of the side plates 40 on both sides of the plate box 4, and both ends of the rotating shaft 505 are fixed to the left side plate 503 and the right On the side plate 504; a pair of plate box pushing cylinders 506 are fixed on the inner side of the left side plate 503 and the inner side surface of the right side plate 504 respectively, and the ends of the piston rods of the pair of plate box pushing cylinders 506 are hinged on the plates The rear outer side surfaces of the side plates 40 on both sides of the box 4 (see FIGS. 5a and 5b).

The upper automatic plate changing device of the book and web printing machine of the present invention, when the plate changing is needed, the plate box 4 with the front end facing down and the back end facing up vertically together with the left side plate 503 and right The side plates 504 are pushed from the outside of one side wall plate 500' along the upper rail 501 and the lower rail 502 between the side wall plates 500, 500', and then a pair of plate boxes are driven to push the piston rod of the cylinder 506 to extend, so that The plate box 4 rotates at an angle around the rotating shaft 505 to reach the working state, and then performs automatic plate unloading and automatic plate loading in sequence.

Considering that the extension of the piston rod of a pair of plate boxes pushing the cylinder 506 will affect the inclination angle of the plate box 4, a set of plate box angle adjustment mechanisms 6 are installed on the inner sides of the wall plates 500 and 500' on each side. The box angle adjusting mechanism 6 includes a mounting seat 60, a swing rod 62, a swing shaft 63 and an adjusting screw 64, wherein: the mounting seat 60 is fixed on the inner surface of the wall panel 500, and a circular arc groove is formed on the top surface of the mounting seat 60 , A front pin 65 is installed in the circular arc groove through the pressure plate 66; one end of the swing rod 62 is installed on the inner side of the wall panel 500 through a hinge hole bolt 61 and is located on the rear side of the mounting seat 60, the swing rod 62 A groove is formed on the other end surface of the shaft, and a rear pin shaft 68 is installed in the groove through a jack screw; one end of the adjusting screw 64 is provided with a handle, and the other end of the adjusting screw 64 is threadedly connected with the front pin shaft 65 It passes through the rear pin 68 and is fixed with a stopper 69; the two ends of the swing shaft 63 respectively pass through the side plates 40 on both sides of the upper plate box 4 and lean against the inner arc surface of the swing lever 62. Since the extension of the piston rod of the cylinder driven by the plate box 506 has always been surplus, so that when the plate box 4 is in the working state, the swing shaft 63 has always been closely abutted on the inner arc surface of the swing rod 62, when the adjustment screw is rotated At 64, the swing lever 62 rotates with the hinge hole bolt 61 as a rotation axis, and at the same time, the swing shaft 63 on the inner arc surface of the swing lever 62 also rotates around the rotation axis 505, so that the plate box 4 and the upper plate roller can be adjusted The angle of the mounting slot of the printing plate of 100 is adjusted. After the adjustment is completed, the adjusting screw 64 is locked with a lock nut 67 (see FIGS. 6a and 6b).

During automatic plate unloading, the upper plate cylinder 100 rotates counterclockwise during plate unloading. When it is turned to a certain position, a set of cam clutch mechanism 2 is closed, and the rocker arm 14 rotates through the rotation of the plate clamp rotating shaft 11, when the rocker arm The support roller 15 on 14 turns to below the cam 25', the cam 25' presses the support roller 15, so that the spring leaf 12 is in a tightened state (contracted state), and the tip of the printing plate leaves the mounting groove of the printing plate under the effect of tension, As the upper plate cylinder 100 rotates, the plate slowly exits the upper plate cylinder 100, and at the same time, the rear guide plate 444 in the plate discharge mechanism lifts the surface of the cylinder close to the plate cylinder 100, and the upper plate cylinder 100 continues to rotate. The tip of the printing plate that has left the upper plate cylinder 100 is slowly guided into the plate discharge channel under the guidance of the rear guide plate 444. After the upper plate cylinder 100 rotates once, the rear guide plate 444 bounces back under the action of the rear guide plate cylinder 445. Bounce on the back of the printing plate and completely eject the bite end of the printing plate out of the plate mounting groove of the upper plate cylinder 100. The entire printing plate completely enters the plate discharge channel. At this time, the front guide plate 434 is in the plate discharge cylinder 441. Retract under the action and move the unloaded printing plate back a distance to facilitate manual removal of the printing plate. At this time, there is no plate on the upper plate cylinder 100, and the automatic plate mounting operation can be performed.

When installing the plate automatically, place the printing plate 10 (graphics face down) on the upper pallet 414 in the plate box 4. The front plate of the printing plate 10 is blocked by the plate baffle 424 and will not slide down; Back, driving the upper pallet 415 close to the upper plate cylinder 100, the front end of the bite of the printing plate 10 leans against the surface of the upper plate cylinder 100, at this time the plate baffle 424 rotates downward through the baffle cylinder 425, and no longer blocks At the front end of the printing plate 10, due to the connecting rod controlled by the platen cylinder 425, the platen brush 427 presses the plate 10 from bottom to top, and the pressure rod 426 approaches the plate from top to bottom, so that when the platen brush 427 is pushed up When the printing plate 10, the printing plate 10 will not float upward, at the same time the upper plate cylinder 100 rotates clockwise, when the plate mounting groove of the upper plate cylinder 100 turns to the bite position of the printing plate 10, due to the platen The pressure of the brush 427 on the printing plate 10, the printing plate 10 will enter the plate mounting groove of the upper plate cylinder 100, and after the upper plate cylinder 100 rotates by a certain angle, the platen roller 30 drives the cylinders in the two platen rollers Under the action of 31, the upper plate cylinder 100 is pressed, and the plate 100 is tightly attached to the surface of the upper plate cylinder 100. At the same time, the platen brush 427 is lifted, and no pressure is applied to the plate 10. 426 is also lifted at the same time, so that the tip of the printing plate 10 also passes through the plate mounting channel. After the upper plate cylinder 100 rotates clockwise one turn, the tip of the plate 10 also reaches the position of the plate mounting groove of the upper plate cylinder 100 At this time, the spring plate 12 that has been controlled by another set of cam clutch mechanism 2 swings, hooking and locking the tip of the printing plate 10 in the printing plate mounting groove of the upper printing plate cylinder 100. At the same time, the piston rod of the pushing cylinder 421 is extended to return the upper supporting plate 415 to the initial position, and the printing plate stopper 424 is raised again.

As the printing plate is loaded and unloaded, the plate box 4 is located between the side wall panels 500, 500'. In the actual work process, due to considerations such as wiping the rubber cloth, cleaning the rubber roller, etc., the plate box 4 needs to be moved out of the wallboard. First control a pair of plate boxes to push the piston rod of the cylinder 506 to retract, the plate box 4 turns from the oblique state to the vertical state around the rotation axis 505, and then push the plate box 4 together with the left side plate 503 and the right side plate 504 by hand By moving along the upper rail 501 and the lower rail 502, the entire plate box 4 can be moved to the outside of the starting side wall panel 500'.

The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the technical field can make various changes or modifications without departing from the spirit and scope of the present invention, so all are equivalent The technical solution should also belong to the scope of the present invention and should be defined by the claims.

Claims

An upper automatic plate changing device for a book and web printing machine, the book and web printing machine includes an upper plate cylinder, a lower plate cylinder and two rubber cylinders, the upper plate cylinder and two rubber cylinders And the lower plate cylinder are arranged in a vertical tilt from top to bottom in order, so that the center connection of the upper plate cylinder, the two rubber cylinders and the lower plate cylinder is inclined at an angle of 15 degrees to the vertical direction; the automatic plate changer is used It is used for loading and unloading the printing plate of the upper plate cylinder and includes a plate locking mechanism, a cam clutch mechanism, a platen roller mechanism, a plate box and a plate box pushing mechanism;

The plate locking mechanism is installed in the plate installation groove of the upper plate cylinder, and the tip of the plate is locked or released in the plate installation groove of the upper plate cylinder;

There are two sets of the cam clutch mechanism, which are installed on the inner sides of the wall panels on both sides to realize the pressing or releasing of the plate locking mechanism;

The platen roller mechanism is installed between the upper parts of the wall plates on both sides, so that the plate is pressed tightly against the surface of the upper plate cylinder;

The plate box is arranged obliquely between the two side wall panels of the printing machine in a front-bottom-back-up manner. The plate box is divided into an upper plate box and a lower plate box. The plate box is provided with an upper plate guide mechanism and a plate pushing mechanism 、Under the guide and unloading mechanism;

The upper guide plate mechanism is set on the upper plate box to form a plate mounting channel, and drives the printing plate in the upper plate box to approach the upper plate cylinder; the printing plate in the upper plate box is in a graphic-face-down manner place;

The plate pushing mechanism is set on the upper plate box and pushes the printing plate in the plate mounting channel into the plate mounting groove of the upper plate cylinder;

The lower guide plate mechanism is provided on the lower plate box to form a plate discharge channel, and drives the plate removed from the upper plate cylinder into the lower plate box; the plate in the lower plate box is face down Way to enter

The plate unloading mechanism is provided on the lower plate box to remove the plate from the plate mounting groove of the upper plate cylinder and push it into the plate unloading channel;

The plate box pushing mechanism realizes the position conversion of the plate box from the outside of one side wall panel to the side wall panels.
The upper automatic plate changing device of a book web printing machine according to claim 1, characterized in that the plate locking mechanism includes a plate clamp rotating shaft, a plurality of spring plates, a pair of plate-retaining pins, and a pair of rockers An arm, a pair of support rollers, and a pair of return springs; wherein, the plate clamp rotating shaft is embedded in the plate mounting groove of the upper plate cylinder; a plurality of spring plates are evenly installed on the plate clamp along the length of the plate clamping shaft On the outer surface of the rotating shaft; a pair of plate-retaining pins are respectively fixed on both end surfaces of the upper plate cylinder; a pair of rocker arms are respectively fixed on the shaft ends of the plate clamp rotating shaft, and the other ends of the pair of rocker arms Each is located on the inside of a pair of plate pins; a pair of support rollers are respectively installed in the middle of a pair of rocker arms; a pair of return springs are butterfly springs and are respectively mounted on both end surfaces of the upper plate cylinder through fixing pins. The two ends of the return spring abut one by one on the shaft ends of the two ends of the upper plate cylinder and the inner surface of the other ends of the pair of rocker arms;

The rotation of the rotation axis of the plate holder drives the spring plate to swing, so that the tip of the printing plate is locked or released from the front end of the printing plate in the printing plate installation groove of the upper printing plate cylinder.
The upper automatic plate changing device of a book and web printing machine according to claim 1, characterized in that the cam clutch mechanism includes a bracket, a cam cylinder, a cam seat and a cam; the bracket is mounted on the On the inner side of the wallboard; the cam cylinder is mounted on the bracket through a cylinder seat, the cam seat is hinged on the bracket, one end of the cam seat is connected to the end of the telescopic rod of the cam cylinder; The cam is connected to the other end of the cam base;

The expansion and contraction of the telescopic rod of the cam cylinder causes the cam seat to rotate, thereby driving the cam to press or release the support roller of the plate locking mechanism.
The upper automatic plate changing device of a book web printing machine according to claim 1, characterized in that the platen roller mechanism includes two platen roller drive cylinders, two pairs of pillars, two push plates and platen Roller; the two platen roller cylinders are installed on the inner surface of the wall panels on both sides through a pile head; the two pairs of pillars are installed on the inner surfaces of the wall panels on both sides; The ends of the piston rods of the cylinder of the platen roller are connected. Each of the two push plates is provided with a waist-shaped hole and is installed on the two pairs of pillars in correspondence with each other through two hinged hole bolts; the two of the platen roller Each end is connected to the other end of the two push plates;

The platen roller presses the plate tightly against the surface of the upper plate cylinder through two platen roller cylinders.
The upper automatic plate changing device of a book web printing machine according to claim 1, characterized in that:

The upper plate guide mechanism includes an upper cover plate, a pair of front sliders, a pair of rear slide plates, an upper connecting shaft and an upper pallet; the upper cover plate is fixed on the top surface of the plate box; a pair of front The sliders are respectively located on the inner sides of the side plates on both sides of the plate box and are embedded in the front waist grooves formed on the front upper portions of the side plates on both sides of the plate box; a pair of rear sliders are located on both sides of the plate box The inner side of the plate is embedded in the rear waist groove formed on the rear upper part of the side plates on both sides of the plate box; the upper connecting shaft is inserted through a hole formed in a pair of rear sliders; the upper support plate Installed on the top surfaces of a pair of front sliders and a pair of rear sliders to form a plate mounting channel between the upper pallet and the upper cover plate;

The plate pushing mechanism includes a plate pushing cylinder, a pair of upper racks, a pair of upper gears, a pair of plate baffles, a pressing rod, a pressing plate brush, and a pressing rod cylinder; one end of the plate pushing cylinder is fixed at On a side plate of the plate box, the piston rod of the plate pushing cylinder is connected to the front end of a rear slider on the same side of the plate pushing cylinder through a connecting pin; a pair of upper racks are fixed on both sides of the plate box The outer surface of the side plate; a pair of upper gears each mesh with a pair of upper racks and are installed at both ends of the upper connecting shaft; a pair of plate baffles are installed in front of the upper pallet through baffle cylinders The middle of the part; the two ends of the pressing rod correspond to the two ends of the platen brush through a connecting rod; one end of the pressing rod cylinder is installed on a side plate of the plate box, and the other end is A connecting rod located on the same side of the pressure cylinder;

The lower guide plate mechanism includes a lower cover plate, a lower support plate, a pair of lower sliders, a lower connecting shaft, and a front guide plate; the lower cover plate is fixed in the middle of the plate box and located below the upper support plate The lower pallet is fixed to the lower part of the plate box, so that a plate discharge channel is formed between the lower pallet and the lower cover plate; a pair of lower sliders are located on the inner sides of the side plates on both sides of the plate box and each Embedded in the lower waist-shaped groove opened on the front lower part of the side plates on both sides of the plate box; the lower connecting shaft is inserted through a hole formed in a pair of lower sliders; the front guide plate is installed on a pair of lower sliders On the top of

The plate unloading mechanism includes a plate unloading cylinder, a pair of lower racks, a pair of lower gears, and a rear guide plate; one end of the plate unloading cylinder is installed on a side plate of the plate box, and the piston of the plate unloading cylinder The rod is connected to the rear end of a lower slider located on the same side of the plate discharge cylinder through a connecting pin; a pair of lower racks are fixed on the outer sides of the side plates on both sides of the plate box; The lower racks are meshed and installed at both ends of the lower connecting shaft; the rear guide plate is installed above the front guide plate through the rear guide plate cylinder.
The upper automatic plate changing device of the book web printing machine according to claim 1, wherein the plate box pushing mechanism includes an upper rail, a lower rail, a left side plate, a right side plate, a rotating shaft and A pair of plate boxes push the cylinder; the upper guide rail is installed between the backs of the top surfaces of the two side wall panels through the support plate and extends to the outside of one side wall panel, and the lower guide rail is installed on the rear side of the two side wall panels Between the middle and extending to the outside of one side wall panel; the outer ends of the upper rail and the lower rail are connected by a connecting plate; the distance between the left side panel and the right side panel is greater than the two side panels of the plate box The spacing between the plates is set between the left and right plates, the left and right plates are each installed between the upper rail and the lower rail through the ball slider; the rotating shaft is inserted through the In the middle of the side plates on both sides of the plate box, the two ends of the rotating shaft are fixed on the left and right plates respectively; a pair of plate boxes push the cylinders to be fixed on the inner side and right side of the left plate respectively On the inner side of the plate, the ends of the piston rods of the pair of plate boxes pushing the cylinder are hinged to the rear outer sides of the side plates on both sides of the plate box.
The upper automatic plate changing device of the book and web printing machine according to claim 6, characterized in that a top plate is further provided between the lower guide rail and one side wall plate.
The upper automatic plate changing device of a book and web printing machine according to claim 1, characterized in that the automatic plate changing device further comprises two sets of plate box angle adjusting mechanisms which are respectively installed on the inner sides of the side wall panels.