CN113085405A - Book block back local gluing machine - Google Patents

Abstract

The invention discloses a local gluing machine for the back of a book block, which comprises a book discharging device, a book pushing device, a gluing device and a conveying device which are sequentially arranged from front to back and are mutually connected; the gluing device comprises a side plate, a gluing roller, a carrier roller, a local gluing module, a driving device, a gluing roller, a glue limiting module and a supporting assembly; the glue limiting module comprises a supporting plate, a scraping plate arranged on the supporting plate and a glue limiting adjusting assembly used for adjusting the distance between the scraping plate and the gluing roller; each group of supporting assemblies comprises a supporting block with a mounting opening and an elastic positioning assembly arranged in the mounting opening, and the ends of the scraper and the supporting plate are placed in the mounting opening and positioned with the aid of the elastic positioning assembly. The staff can be under the circumstances of not shutting down, adjust the clearance between scraper blade and the rubberizing roller correspondingly through the limit is glued the adjusting part, for follow-up book block of treating the rubberizing provides better glue rendition effect. In addition, the rubber limiting module can be quickly disassembled and assembled for cleaning.

Description

Book block back local gluing machine

Technical Field

The invention relates to the technical field of book production, in particular to a book block back local gluing machine.

Background

The existing children cardboard books require higher daily level and more vivid and interactive contents, so that special-shaped cardboard books appear, which are defined as different from ordinary cardboard books, and different shapes (such as hole forming and window opening modes) are designed on the front cover or the pages of the text according to the requirements of customers to attract children to read the books. The method comprises the steps that a book block is formed after the paperbook pages are mounted, the book block needs to be sent into a gluing machine according to design requirements, glue is locally transferred on the back face of the book block, then the book block is conveyed to workers through a conveying device, the workers manually sleeve the front cover on the book block, and the front cover is fixedly bonded with the back face of the book block.

In the existing book block back local gluing machine, glue on a gluing roller is mainly homogenized through a scraper, so that the gluing roller can transfer a proper amount of glue to the gluing roller. However, the scraper is fixed in the glue receiving container through a plurality of screws, and the scraper with proper width can be debugged and replaced only by stopping the machine, so that the distance between the scraper and the gluing roller can be adjusted to control the gluing amount, and the production plan is influenced. In addition, when the gluing machine is stopped for a long time, glue on the scraping plate can be solidified into a hard block, the glue scraping effect is affected, so that the scraping plate needs to be taken out for cleaning and then put back for fixing.

It is seen that improvements and enhancements to the prior art are needed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a book block back local gluing machine, aiming at controlling the gluing amount of a gluing roller and facilitating the disassembly and assembly of a glue limiting module for cleaning by adjusting the distance between a scraper and the gluing roller without stopping.

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

a local gluing machine for the back of a book block comprises a book discharging device, a book pushing device, a gluing device and a conveying device which are sequentially arranged from front to back and are mutually connected; the book outlet device is used for transferring the book blocks to the book pushing device one by one; the book pushing device is used for pushing the horizontally placed book block to the gluing device, and the gluing device is used for transferring glue to a local area on the back of the book block; the conveying device is used for conveying the book block and changing the book block from a horizontal swinging state to a vertical swinging state; the gluing device comprises two side plates which are arranged in parallel, a gluing roller and a carrier roller which are rotatably arranged between the two side plates, a local gluing module arranged on the gluing roller, a driving device used for driving the gluing roller and the carrier roller to move synchronously, a gluing roller used for gluing the gluing roller, a glue limiting module arranged behind the gluing roller, and a pair of supporting components used for supporting two sides of the glue limiting module; the glue limiting module comprises a supporting plate, a scraping plate arranged on the supporting plate and a glue limiting adjusting assembly used for adjusting the distance between the scraping plate and the gluing roller; each group of supporting assemblies comprises a supporting block with a mounting opening and an elastic positioning assembly arranged in the mounting opening, and the ends of the scraper and the supporting plate are placed in the mounting opening and positioned with the aid of the elastic positioning assembly.

The supporting block consists of a side coaming, an upper coaming and a lower coaming, and the side coaming, the upper coaming and the lower coaming enclose a C-shaped mounting opening; the elastic positioning assembly comprises a guide top plate arranged between the supporting plate and the lower enclosing plate, and a plurality of pre-tightening springs arranged on the lower enclosing plate, wherein the pre-tightening springs are used for pushing the guide top plate to lift the supporting plate and the scraper upwards, so that the scraper is pressed and attached to the bottom surface of the upper enclosing plate, and the side part of the supporting plate is inserted into the C-shaped mounting hole and fixed through a locking screw.

The lower enclosing plate is provided with counter bores the number of which is the same as that of the pre-tightening springs, each counter bore comprises a counter bore cavity and a through hole cavity, each counter bore cavity is used for fixing the pre-tightening spring, the bottom surface of the guide top plate is provided with a pre-tightening threaded hole corresponding to the through hole cavity, a limit screw is inserted into the through hole cavity of each lower enclosing plate, and the threaded end of each limit screw penetrates through the through hole cavity, the counter bores and the pre-tightening springs in sequence and then is screwed into the pre-tightening threaded hole of the guide top plate.

The glue limiting adjusting assembly comprises a glue limiting screw, a glue limiting spring sleeved on the glue limiting screw and a top block fixed on the supporting plate, wherein a glue limiting through hole in clearance fit with the glue limiting screw is formed in the rear end face of the top block, a glue limiting threaded hole matched with the glue limiting through hole is formed in the rear end face of the scraping plate, the threaded end of the glue limiting screw is screwed into the glue limiting threaded hole, and the head of the glue limiting screw is pressed against the rear end face of the top block; one end of the glue limiting spring is pressed on the ejector block, and the other end of the glue limiting spring is pressed on the scraper.

The glue limiting module further comprises two glue stopping components, each glue stopping component comprises an L-shaped support arm and a glue stop block arranged on the scraper, the L-shaped support arm comprises a first support rod and a second support rod which are connected with each other, a clamping opening is formed in the first support rod, the support plate is clamped into the clamping opening, a glue stopping spring is arranged between the first support rod and the glue stop block, a waist-shaped hole is formed in the second support rod, a glue stopping threaded hole corresponding to the waist-shaped hole is formed in the glue stop block, and the waist-shaped hole of the second support rod is inserted into the glue stopping screw and screwed into the glue stopping threaded hole.

The one end of glue spreader is equipped with the extension axle, drive arrangement is including being used for driving motor, the first synchronous pulley of cover on driving motor main shaft, the epaxial second synchronous pulley of cover bearing roller one end, the phase place fine setting subassembly of setting on the extension axle, first synchronous pulley is connected with the transmission of second synchronous pulley through first hold-in range, the phase place fine setting subassembly is connected with the other end shaft transmission of bearing roller through first drive mechanism, one of them end shaft of bearing roller also is connected with the transmission of book pushing device through second drive mechanism, one of them end shaft of bearing roller also is connected with the conveyor transmission through third drive mechanism.

The phase fine adjustment assembly comprises a screw rod, a gear sleeve, a worm wheel and a first gear, the gear sleeve is sleeved on an extension shaft, an input wheel is fixed on the gear sleeve, the gear sleeve can rotate relative to the extension shaft, the first gear is fixedly arranged on the extension shaft, a transmission shaft parallel to the extension shaft penetrates through the side face of the worm wheel, a second gear meshed with the first gear is fixedly arranged on an end shaft of the transmission shaft, a third gear meshed with a gear part on the gear sleeve is fixedly arranged on the other end shaft of the transmission shaft, and the worm wheel is driven by a worm and can rotate relative to the extension shaft.

The conveying device comprises a support frame, two conveying belts symmetrically arranged on the support frame, a conveying belt traction mechanism used for driving the two conveying belts to move synchronously, a cylinder support arranged between the two conveying belts, a cylinder vertically arranged on the cylinder support, and a book ejecting head arranged at the end part of a piston rod of the cylinder.

The book outlet device comprises a belt conveying mechanism arranged between two side plates and a book limiting device arranged above the belt conveying mechanism, wherein the belt conveying mechanism comprises a plurality of belts arranged at intervals, each belt passes through the belt limiting device and moves left and right at present, and the belt limiting device comprises a support arm, a guide seat arranged on the support arm, a guide wheel rotatably arranged on the guide seat and at least one limiting wheel assembly arranged on the guide seat.

The book pushing device comprises an input shaft and a driven shaft which are rotatably arranged between the two side plates, two chain transmission mechanisms symmetrically arranged on the input shaft and the driven shaft, and a plurality of groups of pushing flags arranged on the two chain transmission mechanisms.

Has the advantages that:

compared with the prior art, the staff can be under the condition of not shutting down, adjust the clearance between scraper blade and the rubberizing roller correspondingly through the limit gluey adjusting part to the rubberizing volume of control rubberizing roller provides better glue rendition effect for the book block of follow-up treating the rubberizing. In addition, the glue limiting module can be quickly disassembled and assembled for cleaning, and the phenomenon that the glue forms lumps on the scraping plate and the supporting plate to influence the glue homogenizing effect is avoided. When the glue limiting module is detached, all the locking screws are loosened, the glue limiting module can be pulled out from between the two supporting assemblies, and the glue limiting module is convenient and fast to use. After the glue limiting module is cleaned, the glue limiting module needs to be installed between the two supporting assemblies in a reinstalling mode, the elastic positioning assembly jacks the supporting plate and the scraper upwards, the scraper is made to be attached to the inner wall of the supporting blocks in a pressing mode, pre-positioning of the supporting plate and the scraper is achieved rapidly, finally, the locking screws arranged on the supporting blocks are screwed down, the upper surface and the bottom surface of the supporting plate are fixed through extrusion of the locking screws, and therefore the glue limiting module is firmly installed on the supporting assemblies, and the whole reinstalling process is efficient and convenient.

Drawings

Fig. 1 is a first perspective view of a book block back partial gluing machine provided by the invention.

Fig. 2 is a second perspective view of the book block back partial gluing machine provided by the invention.

Fig. 3 is a schematic structural view of the glue limiting module and the support assembly.

Fig. 4 is a partial enlarged view of the region L1 in fig. 3.

Fig. 5 is a partial enlarged view of the region L2 in fig. 3.

Fig. 6 is a schematic view of the support assembly holding the blade and flight.

Fig. 7 is a schematic structural view of the support block.

Fig. 8 is a schematic view of the structure of the squeegee.

Fig. 9 is a schematic diagram of the connection between the first transmission mechanism and the fine phase adjustment assembly.

Fig. 10 is a schematic structural diagram of a phase tuning element.

Fig. 11 is an exploded view of a phase tuning assembly.

Fig. 12 is a schematic structural view of the worm locking worm wheel.

Figure 13 is a schematic illustration of the application of glue to a glue roll.

Fig. 14 is a schematic structural view of the conveying device.

Fig. 15 is a schematic view showing the mounting position of the air cylinder in the transport apparatus.

Fig. 16 is a schematic structural view of the top book head.

FIG. 17 is a schematic view of a book block after being fed from the laminator to the conveyor.

Figure 18 is a schematic view of a book block being placed vertically on a conveyor after being lifted by a top head.

Fig. 19 is a perspective view of a strap retainer.

Fig. 20 is a schematic view of the belt stop mounted on the book output device.

Fig. 21 is a partial enlarged view of the region L3 in fig. 20.

Description of the main element symbols: a-book discharging device, b-book pushing device, C-gluing device, d-conveying device, C1 side plate, C2-gluing roller, C3-supporting roller, C4-gluing roller, C21-local gluing module, C5-glue limiting module, C51-supporting plate, C52-scraping plate, C6-supporting component, C61-supporting block, C62-supporting plate, C611-side enclosing plate, C612-upper enclosing plate, C613-lower enclosing plate, C614-C mounting port, C615-locking threaded hole, C616-limiting bulge, C617-countersunk hole, C6171-through hole, C6172-countersunk cavity, C618-spring mounting hole, C63-locking screw, C64-guide top plate, C65-pre-tightening spring, C66-limiting screw, C7-glue receiving plate, C8-glue stopper, c 9-glue limiting adjusting assembly, c 91-glue limiting screw, c 92-glue limiting spring, c 93-jacking block, c 94-glue limiting threaded hole, c 95-L-shaped support arm, c 951-first support rod, c 952-second support rod, c 953-clamping opening, c 96-glue blocking spring, g 1-extension shaft, g 2-phase fine adjustment assembly, g 20-worm, g 21-gear sleeve, g 22-worm wheel, g 23-first gear, g 24-input wheel, g 25-second gear, g 26-third gear, g 27-transmission shaft, g 31-bracket, g 32-upper bearing seat, g 33-lower bearing seat, g 4-hand wheel, g 5-worm locking mechanism, g 51-locking, g 52-locking rod, g 53-locking block, g 54-clamping opening, g 1-driving motor, g 5-worm locking mechanism, e 2-first transmission mechanism, e 3-second transmission mechanism, e 4-third transmission mechanism, e 21-first synchronous pulley, e 22-second synchronous pulley, e 23-first synchronous belt, e 241-first support, e 242-first fulcrum, e 243-third synchronous pulley, e 244-fourth synchronous pulley, e 251-second support, e 252-second fulcrum, e 253-fourth gear, e 254-fifth gear, e 26-second synchronous belt, e 27-third synchronous belt, a 1-belt, a 2-book limiter, a 3-belt limiter, a 31-support arm, a 32-guide seat, a 33-guide wheel, a 34-limit wheel component, a 341-limit wheel, a 321-321, a 322-positioning ear, a 11-supporting segment, a 12-returning segment, a 51-driving roller, a 52-driven roller, a 6-beam fulcrum, b 1-input shaft, b 2-driven shaft, b 3-chain transmission mechanism, b 4-flag pushing, b 5-limit plate, b 6-screw lifter, d 1-support frame, d 2-conveyor belt traction mechanism, d 3-cylinder support frame, d 4-cylinder, d 5-book head, d 51-truncated cone segment, d 52-cylinder segment, d 53-threaded hole, d 54-groove, d 21-first book feeding shaft, d 22-second book feeding shaft, d 23-first book feeding roller, d 24-second book feeding roller, d 25-belt seat bearing, d 26-positioning ring and d 6-conveyor belt.

Detailed Description

The invention provides a book block back local gluing machine, which is used for further describing the invention in detail by referring to the attached drawings and embodiments in order to make the purpose, the technical scheme and the effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.

Referring to fig. 1-21, the present invention provides a book block back local gluing machine, which comprises a book output device a, a book pushing device b, a gluing device c and a conveying device d, which are sequentially arranged from front to back and connected with each other; the book outlet device a is used for transferring the book blocks f to the book pushing device b one by one; the book pushing device b is used for pushing the horizontally placed book block f to the gluing device c, and the gluing device c is used for transferring glue to a local area on the back of the book block f; the conveying device d is used for conveying the book block and changing the book block from a horizontal swinging state to a vertical swinging state; the gluing device c comprises two side plates c1 arranged in parallel, a gluing roller c2 and a carrier roller c3 which are rotatably arranged between the two side plates c1, a local gluing module c21 arranged on the gluing roller c2, a driving device for driving the gluing roller c2 and the carrier roller c3 to synchronously move, a gluing roller c4 for gluing the gluing roller c2, a glue limiting module c5 arranged behind the gluing roller c4, and a pair of supporting components c6 for supporting two sides of the glue limiting module c 5; the glue limiting module c5 comprises a supporting plate c51, a scraping plate c52 arranged on the supporting plate c51 and a glue limiting and adjusting component c9 for adjusting the distance between the scraping plate c52 and the glue roller c 4; each set of the supporting assembly c6 comprises a supporting block c61 with a mounting opening, and an elastic positioning assembly arranged in the mounting opening, wherein the ends of the scraper c52 and the supporting plate c51 are placed in the mounting opening and positioned with the aid of the elastic positioning assembly.

In practical application, a glue supply mechanism is arranged above the scraper c52 or the gluing roller c4, the glue supply mechanism discharges glue, the glue converges to a gap between the scraper c52 and the gluing roller c4, glue stoppers c8 arranged at two ends of the gluing roller c4 prevent the glue from overflowing from the end part of the gluing roller c4, and the scraper c52 scrapes off the excess glue on the gluing roller c4 along with the rotation of the gluing roller c4 relative to the scraper c52, so that the glue spreading effect on the gluing roller c4 is achieved.

When the book pushing device is in work, book blocks f are conveyed to the book pushing device b one by the book discharging device a, at the moment, two back surfaces of the book blocks f are horizontally unfolded, then the book blocks are pushed into a position between the glue coating roller c2 and the carrier roller c3 by the aid of the pushing flag b4 on the book pushing device b, glue is locally transferred to the back surfaces of the book blocks by the aid of the local glue coating module c21 on the glue coating roller c2, the glued book blocks are transferred to the conveying belt d6 of the conveying device d, finally the book blocks are conveyed to the manual operation station in a vertical placing posture, a worker can very smoothly sleeve covers on the back surfaces of the book blocks, the inner pages of the two book blocks are combined to form books, the glue is fully adhered to the covers through pressing, and the sleeving efficiency of the book covers is.

When the staff can be according to the glue rendition effect of current book block, under the circumstances of not shutting down, adjust the clearance between scraper blade c52 and rubberizing roller c4 through limit gluey regulating assembly c9 immediately corresponding to control the rubberizing volume of rubberizing roller c4, provide better glue rendition effect for the book block that subsequently waits to glue. In addition, in order to avoid the glue from forming lumps on the scraper c52 and the supporting plate c51 to affect the glue leveling effect, the glue limiting module c5 needs to be detached periodically for cleaning. When the glue limiting module c5 is disassembled, all the locking screws c63 are loosened, and the glue limiting module c5 can be drawn out from between the two supporting assemblies c6, so that the glue limiting module c5 is convenient and quick to disassemble. After the glue limiting module C5 is cleaned, the glue limiting module C5 needs to be installed between two supporting assemblies C6 in a reinstalling manner, namely, the side portions of the supporting plate C51 and the scraper C52 are inserted into the C-shaped installation opening C614, the elastic positioning assembly lifts the supporting plate C51 and the scraper C52 upwards, the scraper C52 is pressed against the inner wall of the supporting block C61, the pre-positioning of the supporting plate C51 and the scraper C52 is quickly achieved, finally, the locking screw C63 arranged on the supporting block C61 is screwed, the upper surface and the bottom surface of the supporting plate C51 are pressed and fixed by the locking screw C63, and therefore the glue limiting module C5 is firmly installed on the supporting assembly C6, and the reinstalling process is efficient and convenient.

Besides, a glue receiving disc c7 is arranged below the supporting plate c51, and the glue receiving disc c7 can receive glue dripping from the gluing roller c4 or the scraping plate c52, so that the glue is prevented from polluting other parts. The blade c51 and the doctor blade c52 are arranged obliquely downwards, which assists the better confluence of the glue at the gap between the doctor blade c52 and the glue roller c4 under the action of gravity.

Specifically, referring to fig. 3 to 7, the support assembly C6 further includes a support plate C62 connected to a support block C61, the support plate C62 is connected to a side plate C1 by a screw, the support block C61 is composed of a side wall plate C611, an upper wall plate C612 and a lower wall plate C613, and the side wall plate C611, the upper wall plate C612 and the lower wall plate C613 enclose a C-shaped mounting opening C614; the elastic positioning assembly comprises a guide top plate C64 arranged between a supporting plate C51 and a lower enclosing plate C613, a plurality of pre-tightening springs C65 arranged on the lower enclosing plate C613, and the pre-tightening springs C65 are used for pushing the guide top plate C64 to lift the supporting plate C51 and a scraper C52 upwards, so that the scraper C52 is pressed against the bottom surface of the upper enclosing plate C612, and the side part of the supporting plate C51 is inserted into a C-shaped mounting hole C614 and is fixed through a locking screw C63.

In fact, referring to fig. 6 and 7, the upper and lower enclosing plates c612 and c613 are provided with locking screw holes c615 for the insertion of locking screws c63, each locking screw hole c615 is inserted with a locking screw c63, and the upper and bottom surfaces of the supporting plate c51 are pressed and fixed by the locking screw c63, so that the supporting plate c51 is firmly mounted on the supporting assembly c 6. The guide top plate c64 includes a top plate body c641, and guide inclined pieces c642 provided at both ends of the top plate body; correspondingly, the corner of the lower enclosing plate c613 is also provided with a chamfer for avoiding the guide oblique sheet. With this arrangement, when the glue limiting module C5 is being reinstalled, the C51 can slide into the C-shaped mounting opening C614 more smoothly by the guidance of the guiding inclined piece and contact with the top plate main body.

Further, the front end of the side enclosing plate C611 is provided with a limiting protrusion C616, and when the side part of the supporting plate C51 is inserted into the C-shaped mounting opening C614, the front end surface of the supporting plate C51 is pressed against the limiting protrusion C616 under the action of gravity. By this arrangement, on the one hand, the limiting protrusion C616 positions the supporting plate C51 to prevent the front end of the supporting plate C51 from moving out of the C-shaped mounting opening C614, and on the other hand, the position of the scraper C52 is also influenced by the position of the supporting plate C51.

After the glue limiting module C5 is cleaned, the glue limiting module C5 needs to be reinstalled between two support assemblies C6, namely the side portions of the supporting plate C51 and the scraper C52 are inserted into the C-shaped mounting opening C614, at this time, the front end surface of the supporting plate C51 presses against the limiting protrusion C616, the supporting plate C51 presses the guide top plate C64, the guide top plate C64 descends to compress the pre-tightening spring C65, the pre-tightening spring C65 pushes the guide top plate C64 to lift up the supporting plate C51 and the scraper C52, the scraper C52 presses against the bottom surface of the upper enclosing plate C612, pre-positioning of the supporting plate C51 and the scraper C52 is quickly achieved, finally, the locking screws C63 arranged on the upper enclosing plate C612 and the lower enclosing plate C613 are tightened, and the upper surface and the bottom surface of the supporting plate C51 are both pressed and fixed by the locking screws C63, so that the glue limiting module C5 is installed on the support assembly C6 more firmly, and the reinsta. Conversely, when the glue limiting module c5 is disassembled, all the locking screws c63 are loosened, and the glue limiting module c5 can be drawn out from between the two supporting assemblies c6, so that the glue limiting module is convenient and quick to disassemble.

Referring to fig. 6 and 7, countersunk holes c617 the number of which is the same as that of the pre-tightening springs c65 are formed in the lower enclosing plate c613, each countersunk hole c617 includes a countersunk cavity c6172 and a through hole cavity c6171, the countersunk cavity c6172 is used for fixing the pre-tightening spring c65, a pre-tightening threaded hole d53 corresponding to the through hole cavity c6171 is formed in the bottom surface of the guide top plate c64, a limit screw c66 is inserted into the through hole cavity c6171 of each lower enclosing plate c613, and a threaded end of the limit screw c66 sequentially penetrates through the through hole cavity c6171, the countersunk cavity c6172 and the pre-tightening spring c65 and then is screwed into the pre-tightening threaded hole d53 of the guide top plate c 64. The pre-tightening spring C65 is limited by the position of the countersunk cavity C6172 and the limit screw C66, so that the problem of separation from the C-shaped mounting opening C614 is avoided. In addition, the limiting screw C66 positions the guide top plate C64, so that the guide top plate C64 is limited to move close to or away from the lower enclosing plate C613 only under the action of the pre-tightening spring C65, the guide top plate C64 is ensured not to be separated from the C-shaped mounting opening C614, and the guide top plate C64 is in a floating state under the action of the spring. When the glue limiting module c5 is taken out from between the two supporting assemblies c6 for cleaning, the pressure of the supporting plate c51 is removed, so that the pre-tightening spring c65 is in an expanded state, the pre-tightening spring c65 drives the guide top plate c64 to naturally ascend, but the head of the limiting screw c66 limits the maximum upward moving stroke of the guide top plate c 64.

In this embodiment, the number of the counter bores c617 is two, so that two pre-tightening springs c65 and two limit screws c66 are provided, and it is ensured that all the pre-tightening springs c65 have enough elastic thrust to push the guide top plate c64 to lift the supporting plate c51 and the scraper c52 upwards.

Because the pre-tightening spring c65 is long in the uncompressed state, in order to facilitate the installation of the pre-tightening spring c65 in the counter bore c617, the upper surrounding plate c612 is provided with a spring installation hole c618 corresponding to the counter bore c617, and when the pre-tightening spring c65 is installed, the pre-tightening spring c65 firstly passes through the spring installation hole c618 and then is installed in the counter bore c 617.

Specifically, the glue limiting and adjusting assembly c9 comprises a glue limiting screw c91, a glue limiting spring c92 sleeved on the glue limiting screw c91, and a top block c93 fixed on the supporting plate c51, wherein a glue limiting through hole in clearance fit with the glue limiting screw c91 is formed in the rear end face of the top block c93, a glue limiting threaded hole c94 matched with the glue limiting through hole is formed in the rear end face of the scraping plate c52, the threaded end of the glue limiting screw c91 is screwed into the glue limiting threaded hole c94, and the head of the glue limiting screw c91 abuts against the rear end face of the top block c 93; one end of the glue limiting spring c92 is pressed against the top block c93, and the other end is pressed against the scraper c 52. Namely, the elastic force of the glue limiting spring c92 pushes the scraper c52 to move forwards to the maximum extent, but the head of the glue limiting screw c91 limits the movement of the scraper c52, and the head of the glue limiting screw c91 is pressed against the rear end face of the pushing block c 93. When the worker screws the head of the glue limiting screw c91 forward, the threaded end of the glue limiting screw c91 is screwed into the glue limiting threaded hole c94 on the scraper c52, the glue limiting spring c92 is further compressed, the distance between the scraper c52 and the top block c93 is shortened, the gap between the scraper c52 and the glue applying roller c4 is enlarged, and the glue applying amount of the glue applying roller c4 is controlled to be increased. On the contrary, when the worker reversely screws the head of the glue limiting screw c91, the threaded end of the glue limiting screw c91 gradually retreats from the glue limiting threaded hole c94 on the scraper c52, and under the continuous action of the elasticity of the glue limiting spring c92, the distance between the scraper c52 and the top block c93 is lengthened, so that the gap between the scraper c52 and the glue applying roller c4 is shortened, and the glue applying amount of the glue applying roller c4 is further controlled to be reduced.

In this embodiment, 3 groups of glue limiting adjusting assemblies c9 are provided, and 3 groups of glue limiting adjusting assemblies c9 are respectively located at two ends and the middle part of the scraper c52, so that the scraper c52 is stressed uniformly and does not tilt, and the distances between the front end surface of the scraper c52 and the roller surface of the glue applying roller c4 are equal everywhere, thereby ensuring that the glue applying thickness of the book block is consistent.

It will be appreciated that when blade c52 is pressed against applicator roll c4, i.e., blade c52 is in close contact with applicator roll c4, blade c52 completely scrapes off the glue on applicator roll c4 and no glue is transferred to applicator roll c 2.

Preferably, the glue limiting screw c91 is a hand screw. The distance between the scraper c52 and the gluing roller c4 can be adjusted by screwing the hand-screwing part of the hand-screwing screw, so that the gluing amount of the gluing roller c4 is effectively controlled, and the auxiliary operation of tools is not needed.

In this embodiment, referring to fig. 8, the scraping plate c52 includes a plate body c521 and a scraping strip c522, the front end of the plate body is opened with a transversely extending assembling groove d54, and the scraping strip is fittingly installed in the assembling groove d 54. The glue on the gluing roller c4 is scraped off by a scraping bar, so that the gluing amount of the gluing roller c4 is controlled. The scraping strip is detachably arranged on the plate body through a screw, so that the plate body and the scraping strip can be conveniently and independently cleaned after being detached; in addition, even if the scraping strip is aged and damaged, the scraping strip can be conveniently and independently replaced, and the maintenance cost is low.

Furthermore, the glue limiting module c5 further comprises two glue blocking assemblies, each glue blocking assembly comprises an L-shaped support arm c95 and a glue stop c8 arranged on the scraper c52, the L-shaped support arm c95 comprises a first support rod c951 and a second support rod c952 which are connected with each other, the first support rod c951 is provided with a clamping port c953, the support plate c51 is clamped into the clamping port c953, a glue blocking spring c96 is arranged between the first support rod c951 and the glue stop c8, the second support rod c952 is provided with a waist-shaped hole, the glue stop c8 is provided with a glue blocking threaded hole corresponding to the waist-shaped hole, before the glue stop c8 and the second support rod c952 are assembled and connected, the glue blocking spring c96 applies a forward pushing force to the glue c8, so that the front end of the glue stop c8 is screwed into the glue roller c4 to prevent the glue from overflowing from the end of the glue roller c4, and then the waist-shaped glue stop hole 952 is inserted into the glue threaded hole, the second support bar c952 can be fixedly connected with the glue blocking screw.

Referring to fig. 1, 2 and 9, an extension shaft g1 is arranged at one end of the glue spreader c2, the driving device includes a driving motor e1, a first synchronous pulley e21 sleeved on a main shaft of the driving motor e1, a second synchronous pulley e22 sleeved on one end shaft of the carrier roller c3, and a phase fine adjustment assembly g2 arranged on the extension shaft g1, the first synchronous pulley e21 is in transmission connection with the second synchronous pulley e22 through the first synchronous pulley e23, the phase fine adjustment assembly g2 is in transmission connection with the other end shaft of the carrier roller c3 through a first transmission mechanism e2, one end shaft of the carrier roller c3 is also in transmission connection with the book pushing device b through the second transmission mechanism e3, and one end shaft of the carrier roller c3 is also in transmission connection with the conveying device d through the third transmission mechanism e 4. Through the arrangement, the whole structure is compact, under the driving of a driving motor e1, a carrier roller c3 is driven to rotate through the transmission of a first synchronous pulley e21, a second synchronous pulley e22 and a first synchronous belt e23, and power is transmitted to a phase fine adjustment assembly g2 through a first transmission mechanism e2, so that synchronous movement of a glue spreader c2 and the carrier roller c3 is realized, and the glue spreader c2 and the carrier roller c3 can rotate stably due to the high stability and accurate transmission ratio of synchronous belt transmission. In addition, the power of the driving motor e1 is also distributed to drive the book pushing device b and the conveying device d to move, the book pushing device b is driven to move through the second transmission mechanism e3, and the conveying device d is driven to move through the third transmission mechanism e4, so that the synchronous consistency of the movement of the mechanisms is achieved.

Specifically, referring to fig. 10-12, the phase fine adjustment assembly g2 includes a screw, a gear sleeve g21 sleeved on the extension shaft g1, a worm wheel g22, and a first gear g23, an input wheel g24 is fixed on the gear sleeve g21, the gear sleeve g21 is rotatable relative to the extension shaft g1, a first gear g23 is fixed on the extension shaft g1, a transmission shaft g27 parallel to the extension shaft g1 is penetrated through a side surface of the worm wheel g22, a second gear g25 engaged with the first gear g23 is fixed on an end shaft of the transmission shaft g27, a third gear g26 engaged with a gear portion on the gear sleeve g21 is fixed on the other end shaft of the transmission shaft g27, and the worm wheel g22 is driven by the worm g20 and rotatable relative to the extension shaft g 1.

Before the book blocks are subjected to batch transfer printing and gluing, the phase position of the local gluing module c21 during gluing needs to be adjusted correspondingly according to the positions of the book blocks to be glued (namely, the gluing circumferential deviation of the local gluing module c21 is eliminated), so that the local gluing module c21 corresponds to the areas to be glued on the back of the book blocks one by one (shown in figure 13), the situation that glue exists at the position where the cover is opened due to the fact that the gluing position is too front or too back to affect the quality of books is prevented, and the position where the cover is glued is easy to cause the cover to fall off easily when the books are used; different from the prior art, the book block local gluing device provided by the invention can adjust the phase of the local gluing module c21 on the gluing roller c2 through the phase fine adjustment component g2 under the condition of complete halt or no halt, particularly, the worm g20 drives the worm wheel g22 to rotate, the relative rotation quantity of the third gear g26 and the gear sleeve g21 is changed, the extension shaft and the gluing roller c2 are driven to rotate under the transmission of the second gear g25 and the first gear g23, and then the gluing phase of the gluing module is indirectly finely adjusted in a mode of controlling the rotation quantity of the gluing roller c 2. In addition, because the phase adjustment mode does not enable the local gluing module c21 and the gluing roller c2 to move relatively, the danger and the operation difficulty caused by the fact that a worker enters the gluing device to change the position of the local gluing module c21 on the gluing roller c2 are eliminated, and the operation safety is improved.

It should be understood that, when the local gluing device of the book block is in a shutdown state, the input wheel g24 and the gear sleeve g21 which are in transmission connection with the driving device are stationary, and when the worm wheel g22 driven by the worm g20 rotates, the third gear g26 rotates around the gear part of the stationary gear sleeve g21 under the driving of the worm wheel g22, so that the transmission shaft g27 and the second gear g25 rotate synchronously, and the second gear g25 sequentially drives the first gear g23 and the extension shaft g1 to rotate, thereby achieving the purpose of fine tuning the gluing module.

When the automatic transmission device works, firstly, the driving device drives the input wheel g24 and the gear sleeve g21 to rotate at a constant speed, then the gear part of the gear sleeve g21 drives the second gear g25 and the third gear g26 to rotate at a constant speed, then the third gear g26 sequentially drives the first gear g23 and the extension shaft g1 to rotate at a constant speed, and finally the extension shaft g1 rotates with the glue spreader c 2; meanwhile, the paper feeding mechanism conveys the book block to a position between the glue coating roller c2 and the carrier roller c3, the local glue coating module c21 on the glue coating roller c2 aligns to the area to be glued on the back of the book block, glue is accurately coated on the book block, and the problem of glue coating deviation cannot occur.

It will be appreciated that in normal operation, because the input wheel g24 and the gear sleeve g21 are rotatable relative to the extension shaft g1, the extension shaft g1 only bears against the input wheel g24 and the gear sleeve g21 and does not interfere with their rotation; similarly, the worm wheel g22 is stationary, and the transmission shaft g27 can rotate relative to the worm wheel g22, that is, in a normal working state, the transmission shaft g27 plays a role of bearing the second gear g25 and the third gear g 26.

Even if the book block local gluing device is in a starting motion state, module phase adjustment can be performed on the local gluing module c21, at the moment, the driving device drives the input wheel g24 and the gear sleeve g21 to normally rotate, if the worm wheel g22 driven by the worm g20 rotates at the moment, under the driving of the worm wheel g22, the third gear g26 can also rotate relative to the gear part of the moving gear sleeve g21, the motion synchronism of the third gear g26 and the gear sleeve g21 is broken, and it can be understood that if the screw rotates in the forward direction, the worm wheel g22 can cause fine adjustment rotation quantity of the third gear g26, so that the rated rotation quantity of part of the gear sleeve g21 on the third gear g26 can be offset, the rotation angle of the glue roller c2 at this time is smaller than the original rotation angle, and the purpose of fine adjustment of the gluing module is achieved. If the screw rod rotates reversely, the worm wheel g22 superposes the fine adjustment rotation amount of the third gear g26 on the rated rotation amount of the gear sleeve g21 on the third gear g26, so that the rotation angle of the glue spreader c2 at this time is larger than the original rotation angle, and the purpose of fine adjustment of the glue spreading module is achieved.

In this embodiment, referring to fig. 11, for convenience of installation, the phase fine adjustment assembly g2 is assembled in such a manner that the worm wheel g22 is mounted on the extension shaft g1 through a bearing set g15, the input wheel g24 is mounted on the gear sleeve g21 in a key connection manner, the gear sleeve g21 is mounted on the extension shaft g1 through a bearing g17, the first gear g23 is mounted on the extension shaft g1 in a key connection manner, the transmission shaft g27 is mounted on the worm wheel g22 through the bearing set g16, and the second gear g25 and the third gear g26 are mounted on the transmission shaft g27 in a key connection manner. Each set of bearing set comprises two bearings which are separated by a C-shaped retaining ring, and by means of the arrangement, the stability of the high-speed rotation of the extension shaft g1 and the transmission shaft g27 relative to the worm wheel g22 can be improved.

Further, a worm support assembly for supporting the worm g20 is arranged on the side plate c1, and the worm support assembly comprises a bracket g31, an upper bearing seat g32 and a lower bearing seat g33, wherein the upper bearing seat g32 and the lower bearing seat g31 are arranged on the bracket g 31; the worm g20 is vertically arranged, the top of the worm g20 is rotatably connected with a bearing arranged in the upper bearing seat g32, the bottom of the worm g20 is rotatably connected with a bearing arranged in the lower bearing seat g33, and a fine adjustment driving assembly for driving the worm g20 to rotate is arranged at any end of the worm g 20. The worm g20 has good smoothness in transmission and self-locking performance, and can drive the worm wheel g22 only through the worm g20 for transmission, so that the worm wheel g22 is prevented from rotating automatically.

Preferably, the fine adjustment driving assembly comprises a fine adjustment hand wheel g4 arranged at the top end of the worm g20, the fine adjustment hand wheel g4 is driven in a manual mode, the worm g20 drives the worm wheel g22 to rotate, and the phase adjustment of the glue spreader c2 is accurate due to the high transmission precision of thread transmission.

Preferably, a worm locking mechanism is arranged on the bracket g31, and the worm locking mechanism comprises a locking hand wheel g51, a locking rod g52 and a locking block g53 fixed on the bracket g 31; the locking block g53 is provided with a clamping opening g54 through which the worm g20 penetrates, and the locking hand wheel g51 is used for driving the locking rod g52 to narrow the clamping opening g54, so that the locking block g53 tightly holds the worm g 20. In fact, the locking block g53 includes a first clamping portion and a second clamping portion, threaded holes are formed in the side faces of the first clamping portion and the second clamping portion, the locking rod g52 includes a rod body connected with the locking hand wheel g51 and a threaded section with a diameter smaller than that of the rod body, after the phase adjustment is completed, the locking hand wheel g51 is screwed into the locking rod g52 in the two threaded holes of the first clamping portion and the second clamping portion, the rod body pushes the first clamping portion and the second clamping portion to approach each other, so that the clamping opening g54 is narrowed, the locking block g53 holds the worm g20 tightly, the worm wheel g22 is ensured to be stationary, and the gluing position of the local gluing module c21 is ensured to be accurate and unchanged. Before the gluing phase is adjusted, the locking block g53 can be unlocked by reversely rotating the locking hand wheel g 51.

Specifically, referring to fig. 19-21, the book discharging device a includes a belt a1 transmission mechanism disposed between two side plates c1, and a book stopper a2 disposed above the belt a1 transmission mechanism, the belt a1 transmission mechanism includes a plurality of belts a1 disposed at intervals and a belt driving device, each belt a1 moves left and right through a belt stopper a3, the belt stopper a3 includes a support arm a31, a guide seat a32 disposed on the support arm a31, a guide wheel a33 rotatably disposed on the guide seat a32, and at least one set of limiting wheel assemblies a34 disposed on the guide seat a 32. The arm a31 is fixed on the cross beam fulcrum a6 between the two side plates c 1.

In operation, a stack of book blocks is stacked on the belt a1, the belt a1 pulls the book block positioned at the bottom, the belt driving device drives the belt a1 to move at a certain production rhythm, the book block f is pulled by the friction force of the belt a1 to be conveyed forwards, so that the book blocks smoothly enter the book pushing device b, the book blocks positioned above the book blocks are limited by the book limiter a2 and cannot be conveyed forwards, and the stack of book blocks is conveyed forwards one by one in the paper discharging mode; in the production process, the number of the book blocks can be supplemented by workers at any time, so that the book discharging device a can continuously operate without stopping, and the efficient productivity is maintained.

In practical application, as shown in fig. 20, the belt a1 is elongated and wound around the driving roller a51 and the driven roller a52, the belt a1 is composed of a bearing section a11 and a back-feeding section a12, the bearing section a11 is located below the back-feeding section a12, and each belt stopper a3 performs a stopper corresponding to the back-feeding section a12 of one belt a 1. Each belt stopper a3 is clamped on a beam fulcrum shaft a6 of the book block conveying device, the guide wheel a33 supports the back-returning section a12 of the belt a1, so that the back-returning section a12 of the belt a1 is close to the guide seat a32 but is not contacted with the guide seat a32, when the left-right movement amplitude of the belt a1 is overlarge, the stopping wheel a341 on the stopping wheel a341 assembly a34 prevents the belt a1 from continuously deviating, and therefore reasonable gaps are always kept between the plurality of belts a1 on the driving roller a51 and the driven roller a52, and the smoothness and the reliability of book block conveying are guaranteed.

Specifically, the guide seat a32 includes a support plate a321, two positioning lugs a322 symmetrically disposed on the front end of the support plate a321, the guide wheel a33 is rotatably disposed between the two positioning lugs a322, the wheel surface of the guide wheel a33 faces the bottom surface of the belt a1, and the two positioning lugs a322 are fixedly connected with the support through bolts and nuts. When the belt limiter a3 is installed in a matching manner with the belt a1, the nut is firstly loosened, then the guide seat a32 can rotate around the bolt, the guide wheel a33 upwards supports the back-returning section a12 of the belt a1, on one hand, the belt a1 is tensioned, and the wheel surface of the guide wheel a33 and the belt a1 are in rolling friction, so that the normal operation of the belt a1 is not influenced; on the other hand, the guide wheel can change the moving path of the back feeding section a12 of the belt a1, so that the back feeding section a12 of the belt a1 is basically parallel to the support plate a321, and the back feeding section a12 of the belt a1 is ensured to fall into the deviation rectifying interval of the limiting wheel component a 34.

The guide seat a32 is formed by a metal plate through sheet metal processing in an integrated manner during actual processing, and has compact structure and easy manufacture.

Preferably, the guide wheel a33 can be deep groove ball bearing, can be directly purchased in the market, and has low price, durability and reliability.

Specifically, each group of the limiting wheel assemblies a34 comprises two limiting wheels a341 rotatably connected with the support plate a321, the two limiting wheels a341 are respectively arranged on the left and right sides of the belt a1, the wheel surface of each limiting wheel a341 faces the side surface of the belt a1, a deviation rectifying interval is formed between the two limiting wheels a341, and the normal operation of the belt a1 cannot be influenced because the wheel surface of the limiting wheel a341 and the side surface of the belt a1 are in rolling friction.

Further, in order to provide the minimum number of the limiting wheel assemblies a34 under the condition of ensuring the deviation rectifying effect, in the embodiment, the limiting wheel assemblies a34 are provided in a group, the support plate a321 comprises a connecting part and a rectangular part, and in horizontal projection, two limiting wheels a341 are arranged on the rectangular part of the support plate a321 and are arranged diagonally on the rectangular part, so that the movement path of the belt a1 is well adapted.

Similarly, the limiting wheel a341 can be a deep groove ball bearing, can be directly purchased in the market, and has low price, durability and reliability.

Specifically, referring to fig. 1 and 2, the book pushing device b includes an input shaft b1 and a driven shaft b2 rotatably disposed between two side plates c1, two chain transmission mechanisms b3 symmetrically disposed on the input shaft b1 and the driven shaft b2, and a plurality of sets of pushing flags b4 disposed on two chain transmission mechanisms b 3. The input shaft b1 is in transmission connection with a second transmission mechanism e3, a driving motor e1 drives the input shaft b1 to rotate through the matching of a carrier roller c3 and a second transmission structure, and when the book blocks are transmitted to the chain transmission mechanism b3 from the water outlet device, the flag pushing b4 on the chain transmission mechanism b3 pushes the book blocks to move forwards according to a set rhythm until the book blocks are transmitted between the glue spreader c2 and the carrier roller c 3.

In order to horizontally position the book blocks on the chain conveying mechanism b3, the chain conveying mechanism b3 is provided with two mutually symmetrical limiting plates b5, and the relative distance between the two limiting plates b5 can be adjusted through the screw rod lifter b 6.

It should be noted that a sensor for detecting whether the book block is in place is arranged at an inlet of the pushing device, and the sensor feeds back a signal to the electric cabinet, so that the electric cabinet controls the driving motor e1 to drive the book pushing device b, the gluing device c and the conveying device d to move synchronously.

Specifically, the conveying device d comprises a supporting frame d1, two conveyor belts d6 symmetrically arranged on the supporting frame d1, a conveyor belt traction mechanism d2 for driving the two conveyor belts d6 to move synchronously, a cylinder bracket d3 arranged between the two conveyor belts d6, a cylinder d4 vertically arranged on the cylinder bracket d3, and a book-jacking head d5 arranged at the end of a piston rod of the cylinder d 4. The support bracket d1 is fixed on a cross beam pivot a6 between two side plates c 1.

In practice, with reference to figures 17 and 18, the glued book block is transferred again onto the conveyor d6 of the conveyor d, with the two back sides of the book block likewise lying horizontally open, and the book block f is divided into two large inner page portions, each of which is carried by a conveyor d6, the spine of the book block being located centrally between the two conveyors d 6; then the conveying belt d6 driving mechanism drives the conveying belt d6 to convey forwards, when the middle of the book block is conveyed to the position right above the book-ejecting head d5, the air cylinder d4 drives the book-ejecting head d5 to eject the ridge of the book block vertically upwards, the inner pages of the two parts of the book block are also gathered and pressed under the action of gravity to clamp the book-ejecting head d5, the side edges of the book block are pressed against the conveying belt d6, so that the book block is in a "" shape, the book block is in a vertical placing posture on the conveying belt d6, the air cylinder d4 drives the book-ejecting head d5 to reset, finally the book block is conveyed to a cover sleeving station in a vertical placing state, a worker can very smoothly sleeve a cover on the back of the book block, the inner pages of the two parts of the book block are combined to form a book, and the glue is sufficiently adhered to the cover through pressing, so that the sleeving efficiency of the.

Specifically, referring to fig. 16, the book end d5 includes a truncated cone section d51 and a cylindrical section d52 connected to each other, a threaded hole d53 is formed in a bottom surface of the cylindrical section d52, and an output end of the linear driving mechanism is in threaded connection with the threaded hole d 53. The top of the top book head d5 is flat, on one hand, the truncated cone section d51 is in flexible contact with the spine of the book block, and the truncated cone section d51 is prevented from damaging the book block; on the other hand, the inner page of the book block is pressed against the conical surface of the book block, so that the inner page of the book block is in an inclined state when being erected.

Furthermore, two symmetrically arranged grooves d54 are formed in the outer surface of the cylindrical section d52, so that an assembler can install the book-ejecting head d5 on the linear driving mechanism or detach the book-ejecting head d5 in a hand screwing mode.

Specifically, referring to fig. 14 and 15, the conveyor driving mechanism includes a first book feeding shaft d21 rotatably disposed on a supporting frame d1, a second book feeding shaft d22 fixed on a supporting frame d1, a first book feeding roller d23 sleeved on the first book feeding shaft d21, a second book feeding roller d24 sleeved on the second book feeding shaft d22, and a driving motor e1 for driving the first book feeding shaft d21 to rotate; the first book feeding roller d23 is fixed on the first book feeding shaft d21, and the second book feeding roller d24 can rotate relative to the second book feeding shaft d 22; the two conveyor belts d6 are respectively wound on the first book feeding roller d23 and the second book feeding roller d 24. In operation, the driving motor e1 drives the first book feeding shaft d21 and the first book feeding roller d23 fixed on the first book feeding shaft d21 to rotate, thereby drawing the conveyor belt d6 and the second book feeding roller d24 to rotate.

In this embodiment, two ends of the first book feeding shaft d21 are fixed on the side plate c1 through a bearing d25 with a seat, and a plurality of positioning rings d26 for limiting the axial movement of the first book feeding roller d23 are disposed on the first book feeding shaft d21, so as to axially position the first book feeding roller d23 on the first book feeding shaft d 21.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.

Claims (10)

1. A local gluing machine for the back of a book block is characterized by comprising a book discharging device, a book pushing device, a gluing device and a conveying device which are sequentially arranged from front to back and are mutually connected; the book outlet device is used for transferring the book blocks to the book pushing device one by one; the book pushing device is used for pushing the horizontally placed book block to the gluing device, and the gluing device is used for transferring glue to a local area on the back of the book block; the conveying device is used for conveying the book block and changing the book block from a horizontal swinging state to a vertical swinging state; the gluing device comprises two side plates which are arranged in parallel, a gluing roller and a carrier roller which are rotatably arranged between the two side plates, a local gluing module arranged on the gluing roller, a driving device used for driving the gluing roller and the carrier roller to move synchronously, a gluing roller used for gluing the gluing roller, a glue limiting module arranged behind the gluing roller, and a pair of supporting components used for supporting two sides of the glue limiting module; the glue limiting module comprises a supporting plate, a scraping plate arranged on the supporting plate and a glue limiting adjusting assembly used for adjusting the distance between the scraping plate and the gluing roller; each group of supporting assemblies comprises a supporting block with a mounting opening and an elastic positioning assembly arranged in the mounting opening, and the ends of the scraper and the supporting plate are placed in the mounting opening and positioned with the aid of the elastic positioning assembly.

2. The book block back local gluing machine according to claim 1, wherein the support block is composed of a side coaming, an upper coaming and a lower coaming, and the side coaming, the upper coaming and the lower coaming enclose a C-shaped mounting opening; the elastic positioning assembly comprises a guide top plate arranged between the supporting plate and the lower enclosing plate, and a plurality of pre-tightening springs arranged on the lower enclosing plate, wherein the pre-tightening springs are used for pushing the guide top plate to lift the supporting plate and the scraper upwards, so that the scraper is pressed and attached to the bottom surface of the upper enclosing plate, and the side part of the supporting plate is inserted into the C-shaped mounting hole and fixed through a locking screw.

3. The local gluing machine for the back of the book block according to claim 2, wherein the lower enclosing plate is provided with counter bores with the same number as that of the pre-tightening springs, each counter bore comprises a counter bore cavity and a through hole cavity, the counter bore cavity is used for fixing the pre-tightening springs, the bottom surface of the guide top plate is provided with pre-tightening threaded holes corresponding to the through hole cavities, a limit screw is inserted into the through hole cavity of each lower enclosing plate, and the threaded end of the limit screw is screwed into the pre-tightening threaded hole of the guide top plate after sequentially passing through the through hole cavity, the counter bore cavity and the pre-tightening springs.

4. The book block back local gluing machine according to claim 1, wherein the glue limiting adjusting assembly comprises a glue limiting screw, a glue limiting spring sleeved on the glue limiting screw, and a top block fixed on the supporting plate, wherein a glue limiting through hole in clearance fit with the glue limiting screw is formed in the rear end surface of the top block, a glue limiting threaded hole matched with the glue limiting through hole is formed in the rear end surface of the scraping plate, the threaded end of the glue limiting screw is screwed into the glue limiting threaded hole, and the head of the glue limiting screw abuts against the rear end surface of the top block; one end of the glue limiting spring is pressed on the ejector block, and the other end of the glue limiting spring is pressed on the scraper.

5. The local gluing machine of book block back according to claim 1, characterized in that the glue limiting module further comprises two glue blocking components, each glue blocking component comprises an L-shaped support arm and a glue stop arranged on the scraper, the L-shaped support arm comprises a first support rod and a second support rod which are connected with each other, the first support rod is provided with a clamping opening, the support plate is clamped into the clamping opening, a glue blocking spring is arranged between the first support rod and the glue stop, the second support rod is provided with a waist-shaped hole, the glue stop is provided with a glue blocking threaded hole corresponding to the waist-shaped hole, and the waist-shaped hole of the second support rod is inserted into the glue blocking screw and screwed into the glue blocking threaded hole.

6. The local gluing machine for the back of the book block according to claim 1, wherein an extension shaft is arranged at one end of the glue spreading roller, the driving device comprises a driving motor, a first synchronous pulley sleeved on a main shaft of the driving motor, a second synchronous pulley sleeved on an end shaft of the carrier roller, and a phase fine adjustment assembly arranged on the extension shaft, the first synchronous pulley is in transmission connection with the second synchronous pulley through a first synchronous belt, the phase fine adjustment assembly is in transmission connection with the other end shaft of the carrier roller through a first transmission mechanism, one end shaft of the carrier roller is also in transmission connection with the book pushing device through a second transmission mechanism, and one end shaft of the carrier roller is also in transmission connection with the conveying device through a third transmission mechanism.

7. The local gluing machine for the back of the book block of claim 6, wherein the phase fine adjustment assembly comprises a screw rod, a gear sleeve sleeved on the extension shaft, a worm wheel and a first gear, the gear sleeve is fixed with an input wheel, the gear sleeve can rotate relative to the extension shaft, the first gear is fixed on the extension shaft, a transmission shaft parallel to the extension shaft penetrates through the side surface of the worm wheel, a second gear meshed with the first gear is fixed on one end shaft of the transmission shaft, a third gear meshed with the gear part on the gear sleeve is fixed on the other end shaft of the transmission shaft, and the worm wheel is driven by a worm and can rotate relative to the extension shaft.

8. The book block back local gluing machine according to claim 6, wherein the conveying device comprises a support frame, two conveyor belts symmetrically arranged on the support frame, a conveyor belt traction mechanism for driving the two conveyor belts to move synchronously, a cylinder support arranged between the two conveyor belts, a cylinder vertically installed on the cylinder support, and a book ejecting head arranged on the end of a piston rod of the cylinder.

9. The book block back local gluing machine according to claim 1, wherein the book output device comprises a belt conveying mechanism arranged between two side plates, and a book limiter arranged above the belt conveying mechanism, the belt conveying mechanism comprises a plurality of belts arranged at intervals, each belt passes through the belt limiter and moves left and right at present, and the belt limiter comprises a support arm, a guide seat arranged on the support arm, a guide wheel rotatably arranged on the guide seat, and at least one group of limiting wheel assemblies arranged on the guide seat.

10. The book block back local gluing machine according to claim 1, wherein the book pushing device comprises an input shaft and a driven shaft which are rotatably arranged between the two side plates, two chain transmission mechanisms symmetrically arranged on the input shaft and the driven shaft, and a plurality of groups of pushing flags arranged on the two chain transmission mechanisms.

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