阅读说明：本技术 转塔式不停机放卷设备 (Turret type non-stop unreeling device ) 是由 孙正成 于 2020-07-07 设计创作，主要内容包括：本发明提出了一种转塔式不停机放卷设备,包括纸卷升降部分、纸卷转动部分、裁切部分和纸路缓冲部分,纸卷升降部分包括支撑架和托盘架,托盘架上设置有由调节机构驱动的V型盘,托盘架的一端设置有保护机构,纸卷转动部分包括两个放卷墙板和转动盘,每一转动盘与放卷墙板之间均设置有支撑定位机构,两个转动盘上共同设置有两个纸卷夹紧机构,每一放卷墙板与纸卷夹紧机构之间均设置有传动机构,裁切部分包括两组裁切装置,每一所裁切装置均包括一压合机构和一裁刀,本发明采用了无轴式两侧同步传动的方式,解决了放卷稳定性和准确性差的问题,且适用于正面和反面两种放卷方式,具有传动稳定性和安全性高、适用于更小卷径纸卷进行裁切的特点。(The invention provides a turret type non-stop unreeling device, which comprises a paper roll lifting part, a paper roll rotating part, a cutting part and a paper path buffering part, wherein the paper roll lifting part comprises a supporting frame and a tray frame, a V-shaped disc driven by an adjusting mechanism is arranged on the tray frame, one end of the tray frame is provided with a protection mechanism, the paper roll rotating part comprises two unreeling wall plates and rotating discs, a supporting and positioning mechanism is arranged between each rotating disc and the unreeling wall plate, two paper roll clamping mechanisms are jointly arranged on the two rotating discs, a transmission mechanism is arranged between each unreeling wall plate and the paper roll clamping mechanisms, the cutting part comprises two groups of cutting devices, each cutting device comprises a pressing mechanism and a cutter, the invention adopts a shaftless two-side synchronous transmission mode, solves the problems of poor unreeling stability and accuracy, and is suitable for a front unreeling mode and a back unreeling mode, the cutting device has the characteristics of high transmission stability and safety and suitability for cutting smaller-diameter paper rolls.)

1. The rotary tower type non-stop unreeling device is characterized by comprising a paper roll lifting part, a paper roll rotating part, a cutting part and a paper path buffering part which are sequentially arranged along the advancing direction of printing paper;

the paper roll lifting part comprises a support frame, a tray frame driven by a first power mechanism to lift is slidably mounted on the support frame, a V-shaped disc driven by an adjusting mechanism is arranged on the tray frame, a buffer spring used for bouncing one side of the V-shaped disc is fixed at the bottom of the V-shaped disc, and a protection mechanism is arranged at one end, close to the support frame, of the tray frame;

the paper roll rotating part comprises two oppositely arranged unreeling wall plates arranged on one side of the support frame, a rotating disc is rotatably mounted on each unreeling wall plate, a supporting and positioning mechanism is arranged between each rotating disc and the corresponding unreeling wall plate, the two rotating discs are driven to rotate by a second power mechanism, two paper roll clamping mechanisms for clamping paper rolls are jointly arranged on the two rotating discs, a transmission mechanism for driving the paper rolls to rotate is arranged between each unreeling wall plate and the paper roll clamping mechanisms, two connecting rods which are parallel to each other and symmetrically arranged are jointly fixed between the two rotating discs, and a first paper guide roller which is parallel to the connecting rods is arranged on the outer side of each connecting rod;

the cutting part comprises two groups of cutting devices which are arranged up and down symmetrically, each cutting device comprises two support plates which are fixed on the inner wall of the corresponding unreeling wall plate respectively and are arranged oppositely, a sliding plate is arranged on each support plate in a sliding mode, all the sliding plates are driven to slide by a third power mechanism, a pressing mechanism is arranged between every two sliding plates which are arranged oppositely, a cutter driven to move by the driving mechanism is arranged on the outer side of each pressing mechanism, and a correlation electric eye used for detecting the position of a prepared paper roll is fixed on one sliding plate;

the paper path buffering part comprises a fixing frame arranged on one side of the unreeling wall plate, the fixing frame is far away from one side of the unreeling wall plate, two oppositely arranged swing rods are rotatably installed on one side of the unreeling wall plate, each swing rod is driven to rotate by a first driving cylinder fixed on the fixing frame, a plurality of second paper guide rollers are sequentially rotatably installed on the fixing frame and the swing rods from top to bottom, and each second paper guide roller is parallel to the first paper guide roller.

2. The turret-type non-stop unwinding device according to claim 1, wherein the adjusting mechanism comprises a sliding seat slidably mounted in the tray frame through a plurality of advancing and retreating rollers, the sliding seat is driven to move by a second driving cylinder fixed on the tray frame, the V-shaped tray is slidably mounted on the sliding seat through a plurality of transverse rollers, two coaxially arranged return springs are further fixed on the top of the V-shaped tray, and a free end of each return spring is fixed on the sliding seat.

3. The turret-type non-stop unwinding device according to claim 1, wherein the protection mechanism comprises a transverse rod hinged to one end of the tray frame and transversely arranged, two ends of the transverse rod are respectively provided with a first guide rod perpendicular to the transverse rod, two limit brackets adapted to the first guide rod are fixed to the ends of the tray frame, each first guide rod is slidably mounted on the corresponding limit bracket, one side of each limit bracket is provided with a first limit switch fixed on the tray frame, and a contact plate adapted to the corresponding first limit switch is fixed to each first guide rod.

4. The turret type non-stop unwinding device according to claim 1, wherein each of the supporting and positioning mechanisms comprises two positioning bearings disposed below the corresponding rotating disc, each of the positioning bearings is rotatably mounted on the inner wall of the corresponding unwinding wall board, each of the positioning bearings abuts against the side wall of the corresponding rotating disc, each of the unwinding wall boards is further provided with a plurality of eccentric bearings in an annular shape on the inner wall thereof, each of the eccentric bearings is rotatably mounted on the unwinding wall board and abuts against the corresponding rotating disc, each of the unwinding wall boards is provided with a plurality of limiting bearings in an annular shape on the outer side wall thereof, and each of the limiting bearings abuts against the end surface of the corresponding rotating disc.

5. The turret-type non-stop unwinding device according to claim 1, wherein each paper roll clamping mechanism comprises a first clamping seat and a second clamping seat which are oppositely arranged and fixed on the corresponding rotating disc;

each first clamping seat is rotatably mounted on a first sleeve, a first sliding shaft is slidably mounted in each first sleeve, one end, extending into the space between the two unreeling wall boards, of each first sliding shaft is provided with a first top sleeve, the other end of each first sliding shaft is rotatably mounted with a first sliding plate perpendicular to the first sliding shaft, and each first sliding plate is driven to move by a third driving cylinder fixed on the corresponding first clamping seat;

each second clamping seat is rotatably arranged on a second sleeve, a second sliding shaft which is coaxial with the first sliding shaft is slidably arranged in each second sleeve, a second top sleeve which is opposite to the first top sleeve is arranged at one end of each second sliding shaft, a second sliding plate which is perpendicular to the second sliding shaft is rotatably arranged at the other end of each second sliding shaft, a motor seat for fixing a first speed reducing motor is fixedly arranged on each second clamping seat, a driving belt wheel is fixedly arranged on a motor shaft of each first speed reducing motor, a screw rod and a second guide rod which are parallel to each other are further rotatably arranged on each motor seat, each screw rod and each second guide rod are parallel to the second sliding shaft, a driven belt wheel is fixedly arranged at one end of each screw rod, and a driving belt is jointly wound on each driving belt wheel and the corresponding driven belt wheel, the other end of each screw rod is arranged on the corresponding second sliding plate in a threaded mode, the other end of each second guide rod is arranged on the second sliding plate in a sliding mode, and a second limit switch used for placing the screw rod to reach the maximum stroke is further arranged on each second sliding plate.

6. The turret-type uninterruptible unwinding device as claimed in claim 5, wherein each of the driving mechanisms includes a first power shaft driven by a first driving motor, each of the first power shafts is rotatably mounted at a middle position corresponding to the unwinding wall board, each of the first power shafts passes through a middle position corresponding to the rotating disc, each of the first power shafts is fixedly mounted with a first pulley, each of the first sleeves is fixedly mounted with a second pulley adapted to the first pulley, each of the first pulleys and the corresponding second pulley are together wound with a synchronous belt, a tension wheel is rotatably mounted on an inner wall of each of the unwinding wall boards, and each of the tension wheels abuts against an outer sidewall of the corresponding synchronous belt.

7. The turret-type non-stop unwinding device according to claim 1, wherein each pressing mechanism comprises a rubber roller and a third paper guide roller parallel to each other and the cutter, each third paper guide roller has a rotating base at both ends, each third paper guide roller and the rubber roller are rotatably mounted on the corresponding rotating base, each rotating base is rotatably mounted on the corresponding sliding plate, and each rotating base is driven to rotate by a pressing cylinder fixed on the corresponding sliding plate.

8. The turret-type non-stop unwinding apparatus according to claim 1, wherein each driving mechanism comprises two cutting cylinders respectively disposed at two ends of the corresponding cutting knife, a cylinder body of each cutting cylinder is mounted on the corresponding sliding plate, a piston rod of each cutting cylinder is mounted on the corresponding cutting knife, a third guiding rod fixed to one end of the corresponding cutting knife is slidably mounted on each sliding plate, and each third guiding rod is perpendicular to the cutting knife.

9. The turret-type non-stop unwinding device according to claim 1, wherein the first power mechanism comprises a synchronous transmission shaft rotatably mounted at an upper end of the support frame, the synchronous transmission shaft is parallel to the tray frame and is driven to rotate by a lifting motor fixed on the supporting frame, two ends of the synchronous transmission shaft are respectively and fixedly provided with a first driving chain wheel, the lower end of the supporting frame is rotatably provided with two first driven chain wheels, each first driven chain wheel is matched with the corresponding first driving chain wheel, each first driving chain wheel and the corresponding first driven chain wheel are jointly wound with a first transmission chain, the two ends of the tray frame are respectively fixed with a lifting slide block which is arranged on the supporting frame in a sliding mode, and each lifting slide block is fixed on the corresponding first transmission chain.

10. The turret type non-stop unwinding device according to claim 1, wherein the second power mechanism comprises a second power shaft rotatably mounted on the two unwinding wall plates, the second power shaft is driven by a second speed reduction motor to rotate, a driving gear is fixedly mounted at each of two ends of the second power shaft, each unwinding wall plate is rotatably mounted with an intermediate gear engaged with the corresponding driving gear, and a gear tooth adapted to the intermediate gear is further disposed on a side wall of each rotating disc;

the third power mechanism comprises a driving shaft which is rotatably arranged at one end of the two oppositely arranged supporting plates, the driving shaft is driven to rotate by a second driving motor fixed on one of the supporting plates, one end of the driving shaft is fixedly provided with a second driving chain wheel, one end of the other two opposite supporting plates is jointly and rotatably provided with a driven shaft, a second driven chain wheel matched with the second driving chain wheel is fixedly arranged on the driven shaft, the second driven sprocket and the second drive sprocket go up jointly around being equipped with a second drive chain, do not fixed mounting have a third drive sprocket, each are equallyd divide at the both ends of drive shaft and the both ends of driven shaft the other end of backup pad all rotates and installs a third driven sprocket, each third driven sprocket and corresponding all wind jointly on the third drive sprocket and be equipped with a third drive chain.

Technical Field

The invention relates to the technical field of printing machines, in particular to rotary tower type non-stop unreeling equipment.

Background

The automatic unreeling mode without stopping is mainly divided into two categories, one is zero-speed paper receiving and the other is high-speed paper receiving. The zero-speed paper receiving needs a paper storage warehouse, the occupied area is large, the high-speed paper receiving means that paper is lapped in high-speed movement, most of the high-speed paper receiving can only be carried out on the front side without stopping, the special requirements of printing manufacturers on the back side can not be met, the requirements on the stability and the accuracy of a machine in the high-speed paper receiving process are higher, and the requirements on the stability and the accuracy in the high-speed paper receiving process can not be met by the conventional unreeling equipment.

Therefore, a turret-type non-stop unwinding apparatus capable of solving the above problems is required.

Disclosure of Invention

The invention provides a turret type non-stop unreeling device which adopts a shaftless two-side synchronous transmission mode, solves the problem of poor unreeling stability and accuracy, is suitable for a front unreeling mode and a back unreeling mode, and has the characteristics of high transmission stability and safety and suitability for cutting smaller-diameter paper rolls.

The technical scheme of the invention is realized as follows:

the rotary tower type non-stop unreeling device comprises a paper roll lifting part, a paper roll rotating part, a cutting part and a paper path buffering part which are sequentially arranged along the advancing direction of printing paper;

the paper roll lifting part comprises a support frame, a tray frame driven by a first power mechanism to lift is slidably mounted on the support frame, a V-shaped disc driven by an adjusting mechanism is arranged on the tray frame, a buffer spring used for bouncing one side of the V-shaped disc is fixed at the bottom of the V-shaped disc, and a protection mechanism is arranged at one end, close to the support frame, of the tray frame;

the paper roll rotating part comprises two oppositely arranged unreeling wall plates arranged on one side of the support frame, a rotating disc is rotatably mounted on each unreeling wall plate, a supporting and positioning mechanism is arranged between each rotating disc and the corresponding unreeling wall plate, the two rotating discs are driven to rotate by a second power mechanism, two paper roll clamping mechanisms for clamping paper rolls are jointly arranged on the two rotating discs, a transmission mechanism for driving the paper rolls to rotate is arranged between each unreeling wall plate and the paper roll clamping mechanisms, two connecting rods which are parallel to each other and symmetrically arranged are jointly fixed between the two rotating discs, and a first paper guide roller which is parallel to the connecting rods is arranged on the outer side of each connecting rod;

the cutting part comprises two groups of cutting devices which are arranged up and down symmetrically, each cutting device comprises two support plates which are fixed on the inner wall of the corresponding unreeling wall plate respectively and are arranged oppositely, a sliding plate is arranged on each support plate in a sliding mode, all the sliding plates are driven to slide by a third power mechanism, a pressing mechanism is arranged between every two sliding plates which are arranged oppositely, a cutter driven to move by the driving mechanism is arranged on the outer side of each pressing mechanism, and a correlation electric eye used for detecting the position of a prepared paper roll is fixed on one sliding plate;

the paper path buffering part comprises a fixing frame arranged on one side of the unreeling wall plate, the fixing frame is far away from one side of the unreeling wall plate, two oppositely arranged swing rods are rotatably installed on one side of the unreeling wall plate, each swing rod is driven to rotate by a first driving cylinder fixed on the fixing frame, a plurality of second paper guide rollers are sequentially rotatably installed on the fixing frame and the swing rods from top to bottom, and each second paper guide roller is parallel to the first paper guide roller.

As a preferable technical scheme, the adjusting mechanism comprises a sliding seat which is slidably mounted in the tray frame through a plurality of advancing and retreating rollers, the sliding seat is driven by a second driving cylinder which is fixed on the tray frame to move, the V-shaped disc is slidably mounted on the sliding seat through a plurality of transverse rollers, two coaxially arranged return springs are further fixed at the top of the V-shaped disc, and the free end of each return spring is fixed on the sliding seat.

As an optimal technical scheme, protection mechanism include one articulate in tray frame one end and for the horizontal pole that transversely sets up, the both ends of horizontal pole are provided with a perpendicular to respectively the first guide bar of horizontal pole, tray frame's end fixing have two with the spacing support of first guide bar looks adaptation, each first guide bar equal slidable mounting in corresponding on the spacing support, each one side of spacing support all is provided with one and is fixed in first limit switch on the tray frame, each all be fixed with one on the first guide bar with correspond the contact plate of first limit switch looks adaptation.

As an optimal technical scheme, each support positioning mechanism all include two set up in corresponding the positioning bearing of rolling disc below, each positioning bearing all rotates install in corresponding on the inner wall of unreeling the wallboard, each positioning bearing all pushes up to lean on in corresponding on the lateral wall of rolling disc, each it is provided with a plurality of eccentric bearing still to be the annular on the inner wall of unreeling the wallboard, each eccentric bearing all rotates install in just all push up to correspond on unreeling the wallboard the rolling disc, each it all is the annular rotation and installs a plurality of limit bearing on the lateral wall of unreeling the wallboard, each limit bearing all pushes up to lean on in corresponding on the terminal surface of rolling disc.

As a preferred technical scheme, each paper roll clamping mechanism comprises a first clamping seat and a second clamping seat which are oppositely arranged and fixed on the corresponding rotating disc;

each first clamping seat is rotatably mounted on a first sleeve, a first sliding shaft is slidably mounted in each first sleeve, one end, extending into the space between the two unreeling wall boards, of each first sliding shaft is provided with a first top sleeve, the other end of each first sliding shaft is rotatably mounted with a first sliding plate perpendicular to the first sliding shaft, and each first sliding plate is driven to move by a third driving cylinder fixed on the corresponding first clamping seat;

each second clamping seat is rotatably arranged on a second sleeve, a second sliding shaft which is coaxial with the first sliding shaft is slidably arranged in each second sleeve, a second top sleeve which is opposite to the first top sleeve is arranged at one end of each second sliding shaft, a second sliding plate which is perpendicular to the second sliding shaft is rotatably arranged at the other end of each second sliding shaft, a motor seat for fixing a first speed reducing motor is fixedly arranged on each second clamping seat, a driving belt wheel is fixedly arranged on a motor shaft of each first speed reducing motor, a screw rod and a second guide rod which are parallel to each other are further rotatably arranged on each motor seat, each screw rod and each second guide rod are parallel to the second sliding shaft, a driven belt wheel is fixedly arranged at one end of each screw rod, and a driving belt is jointly wound on each driving belt wheel and the corresponding driven belt wheel, the other end of each screw rod is arranged on the corresponding second sliding plate in a threaded mode, the other end of each second guide rod is arranged on the second sliding plate in a sliding mode, and a second limit switch used for placing the screw rod to reach the maximum stroke is further arranged on each second sliding plate.

As a preferred technical solution, each of the transmission mechanisms includes a first power shaft driven by a first driving motor, each of the first power shafts is rotatably mounted at a middle position corresponding to the unreeling wall plate, each of the first power shafts penetrates through a middle position corresponding to the rotating disc, each of the first power shafts is fixedly mounted with a first pulley, each of the first sleeves is fixedly mounted with a second pulley adapted to the first pulley, each of the first pulleys and the corresponding second pulley are wound with a synchronous belt, an inner wall of each of the unreeling wall plates is rotatably mounted with a tensioning wheel, and each of the tensioning wheels abuts against an outer side wall of the corresponding synchronous belt.

As a preferred technical scheme, each pressing mechanism comprises a rubber roller and a third paper guide roller which are parallel to each other and parallel to the cutting knife, two ends of each third paper guide roller are respectively provided with a rotating seat, each third paper guide roller and the rubber roller are rotatably arranged on the corresponding rotating seat, each rotating seat is rotatably arranged on the corresponding sliding plate, and each rotating seat is driven to rotate by a pressing air cylinder fixed on the corresponding sliding plate.

As a preferred technical scheme, each driving mechanism includes two cutting cylinders respectively disposed at two ends of the corresponding cutting knife, a cylinder body of each cutting cylinder is mounted on the corresponding sliding plate, a piston rod of each cutting cylinder is mounted on the corresponding cutting knife, a third guide rod fixed at one end of the corresponding cutting knife is slidably mounted on each sliding plate, and each third guide rod is perpendicular to the cutting knife.

As a preferred technical scheme, first power unit including rotate install in the synchro-drive shaft of the upper end of support frame, synchro-drive shaft is on a parallel with the tray frame, synchro-drive shaft is by being fixed in promotion motor drive on the support frame rotates, synchro-drive shaft's both ends respectively fixed mounting have a drive sprocket, the lower extreme of support frame is rotated and is installed two first driven sprocket, each first driven sprocket all with correspond drive sprocket looks adaptation, each drive sprocket with correspond around being equipped with first drive chain jointly on the first driven sprocket, the both ends of tray frame are fixed with a slidable mounting respectively in promote the slider on the support frame, each promote the slider all be fixed in and correspond on the first drive chain.

As an optimal technical scheme, the second power mechanism comprises a second power shaft which is rotatably installed at two unwinding wallboards, the second power shaft is driven to rotate by a second speed reducing motor, two ends of the second power shaft are respectively and fixedly provided with a driving gear, each unwinding wallboard is rotatably provided with a corresponding intermediate gear meshed with the driving gear, and each side wall of the rotating disc is further provided with gear teeth matched with the intermediate gear.

As a preferable technical solution, the third power mechanism includes a driving shaft rotatably installed at one end of the two supporting plates arranged oppositely, the driving shaft is driven to rotate by a second driving motor fixed on one of the supporting plates, one end of the driving shaft is fixedly provided with a second driving chain wheel, one end of the other two opposite supporting plates is jointly and rotatably provided with a driven shaft, a second driven chain wheel matched with the second driving chain wheel is fixedly arranged on the driven shaft, the second driven sprocket and the second drive sprocket go up jointly around being equipped with a second drive chain, do not fixed mounting have a third drive sprocket, each are equallyd divide at the both ends of drive shaft and the both ends of driven shaft the other end of backup pad all rotates and installs a third driven sprocket, each third driven sprocket and corresponding all wind jointly on the third drive sprocket and be equipped with a third drive chain.

By adopting the technical scheme, the invention has the beneficial effects that:

the rotary tower type non-stop unreeling device comprises a paper roll lifting part, a paper roll rotating part, a cutting part and a paper path buffering part which are sequentially arranged along the advancing direction of printing paper, wherein the paper roll lifting part comprises a support frame, a tray frame and a V-shaped tray; when the tray frame is installed, the ground needs to be hollowed to form a foundation, the height of the tray frame is enabled to be parallel and level with the height of the ground, a paper roll can be conveniently rolled to the tray frame or rolled from the tray frame, the paper roll can be conveniently taken out and put into the paper roll, the paper roll is very convenient to operate, and the labor required when the paper roll is taken out and put is saved.

Because the tray frame is provided with the V-shaped tray through the adjusting mechanism, the sliding seat moves on the tray frame to be pushed and pulled through the second driving air cylinder, and the advancing and retreating rollers on the sliding seat can roll on the tray frame, so that the paper roll on the V-shaped tray can be extended and retracted; simultaneously in order to make the scroll can align with the printing plate, need carry out the fine setting on the position about pressing from both sides tightly, the bottom of V type dish is provided with horizontal gyro wheel, makes V type dish remove about can moving on the sliding seat as required, has guaranteed that the scroll can align with the printing plate of printing plate cylinder, has improved the quality of printing.

Because one end of the tray frame is provided with the protection mechanism, the cross rod can move up and down, when the cross rod touches a barrier below the cross rod, the first guide rod moves upwards and drives the contact plate to move upwards to be contacted with the first limit switch, and the first limit switch receives a signal to control the lifting motor to stop running, so that the tray frame stops descending, the condition that the feet of an operator are crushed by the tray frame is avoided, and the use safety of the invention is effectively improved.

Because the scroll rotating part comprises an unreeling wall plate and a rotating disc rotatably arranged on the unreeling wall plate, when the rotating disc is arranged on the unreeling wall plate, an operator needs to install a positioning bearing and a limiting bearing on corresponding positions for positioning the position of the rotating disc, then the rotating disc is arranged on the inner wall of the unreeling wall plate, and finally the limiting bearing is arranged on the outer wall of the unreeling wall plate to fix the rotating disc, and because a central rotating shaft is arranged between the two rotating discs and is driven by the roller surface of the rotating disc, the two positioning bearings and a plurality of eccentric bearings are annularly surrounded on the outer side of the rotating disc, wherein the two positioning bearings are arranged below the rotating disc to position the installation position of the rotating disc, the eccentric bearings are abutted against the side wall of the rotating disc to support the rotating disc, so that the rotating disc is prevented from moving in the radial direction in the rotating process, meanwhile, the installation of the rotating disc can be facilitated, the assembling speed of the rotating disc is greatly improved, and the limiting bearing is pressed on the end face of the rotating disc, so that the rotating disc is prevented from being deviated in the axial direction.

Because the two rotating discs are driven by a second power mechanism to rotate, the rotating discs adopt a shaftless two-side transmission structure, the two rotating discs are driven by the same second power shaft to transmit power, and simultaneously, the driving gear, the intermediate gear and the rotating discs are adopted to transmit power in sequence, so that the transmission stability and accuracy of the unwinding equipment are improved, the problem that the stress generated by the traditional unwinding equipment adopting a single-side transmission mode is concentrated and the machine shakes seriously is solved, and the safety and stability of the unwinding equipment during high-speed operation are improved; meanwhile, the rotating disc with a large modulus and a large number of teeth can reduce the torque pressure of the second speed reducing motor, and the service life of the second speed reducing motor is prolonged.

According to the invention, when the paper roll is unreeled, two-stage power transmission is realized through the first power shaft, the first-stage transmission is that the first power shaft is driven to rotate through power transmission of the synchronous belt and is positioned on the outer side of the unreeling wall plate by first driving, the second-stage transmission is that the first power shaft drives the second belt wheel to rotate through the synchronous belt and the first belt wheel, the second belt wheel drives the paper roll to rotate, the synchronous belt is adopted for power transmission, the generated noise is low, lubrication is not needed, and oil stains on a machine are reduced; meanwhile, two-stage transmission is respectively arranged on the inner side and the outer side of the unreeling wall plate, so that the overall structure of the unreeling device is more compact.

Because the cutting part comprises two groups of cutting devices which are symmetrically arranged up and down, when the paper path unwinding device is used, the cutting devices adopt a two-way cutter arrangement structure and are not limited to cutting the paper path with the front surface facing upwards, so that the paper path unwinding device can cut the paper path with the front surface facing upwards and the paper path with the back surface facing upwards, the printing cutting requirements of a printing factory are met, and the applicability of the unwinding device is improved; and no matter the paper roll with the large roll diameter or the small roll diameter is cut, the relative cutting positions of the upper cutter and the lower cutter are not changed, so that the original paper roll can be placed in the small roll diameter to be cut, and the automatic cutting of the paper roll with the smaller roll diameter is realized.

Because the pressing mechanism is arranged between every two sliding plates which are oppositely arranged, when the rubber roller is abutted against the side wall of the prepared paper roll, the third paper guide roll is driven to tension the printing paper, so that the fluctuation of the printing paper during cutting is reduced as much as possible, the tension change of the printing paper during cutting is reduced, and the stability and the accuracy of the cutting device during cutting are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing the construction of the lifting and lowering part of the roll of paper according to the present invention;

FIG. 3 is a schematic structural view of the tray frame of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

FIG. 5 is a bottom view of FIG. 3;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

FIG. 7 is a schematic view of the structure of the rotating portion of the roll of paper of the present invention;

FIG. 8 is an enlarged view of the structure at C in FIG. 7;

FIG. 9 is a side view of FIG. 7;

FIG. 10 is a schematic view of the installation of the cutting device of the present invention on an unreeled wall panel;

FIG. 11 is a schematic view of the cut-out portion of the present invention;

FIG. 12 is a schematic cut-out view of the invention with the paper path facing up;

FIG. 13 is a schematic cut-out view of the invention with the paper path facing upside down;

FIG. 14 is a schematic view of the construction of the paper roll clamping mechanism of the present invention;

figure 15 is a cross-sectional view of the paper roll clamping mechanism of the present invention.

Wherein: 1. printing paper; 2. a raw paper roll; 3. preparing a paper roll;

100. a paper roll lifting part; 1001. a support frame; 1002. a tray rack; 1003. a V-shaped disc; 1004. a buffer spring; 1005. advancing and retreating rollers; 1006. a sliding seat; 1007. a second driving cylinder; 1008. a transverse roller; 1009. a return spring; 1010. a cross bar; 1011. a first guide bar; 1012. a limiting bracket; 1013. a first limit switch; 1014. a contact plate; 1015. a hoisting motor; 1016. a first drive sprocket; 1017. a first driven sprocket; 1018. a first drive chain; 1019. lifting the slide block; 1020. a synchronous drive shaft;

200. a paper roll rotating section; 2001. unreeling a wallboard; 2002. rotating the disc; 2003. a connecting rod; 2004. a first paper guide roller; 2005. positioning the bearing; 2006. an eccentric bearing; 2007. a limit bearing; 2008. a first clamping seat; 2009. a second clamping seat; 2010. a first sleeve; 2011. a first slide shaft; 2012. a first top sleeve; 2013. a first slide plate; 2014. a third driving cylinder; 2015. a second sleeve; 2016. a second slide shaft; 2017. a second top sleeve; 2018. a second slide plate; 2019. a first reduction motor; 2020. a motor base; 2021. a drive pulley; 2022. a screw rod; 2023. a second guide bar; 2024. a driven pulley; 2025. a transmission belt; 2026. a second limit switch; 2027. a first drive motor; 2028. a first power shaft; 2029. a first pulley; 2030. a second pulley; 2031. a synchronous belt; 2032. a tension wheel; 2033. a second power shaft; 2034. a second reduction motor; 2035. a drive gear; 2036. an intermediate gear; 2037. gear teeth;

300. cutting off the part; 3001. a support plate; 3002. a sliding plate; 3003. a cutter; 3004. a correlation electric eye; 3005. a rubber roller; 3006. a third paper guide roller; 3007. a rotating seat; 3008. pressing a cylinder; 3009. a cutting cylinder; 3010. a third guide bar; 3011. a drive shaft; 3012. a second drive motor; 3013. a second drive sprocket; 3014. a driven shaft; 3015. a second driven sprocket; 3016. a second drive chain; 3017. a third drive sprocket; 3018. a third driven sprocket; 3019. and a third transmission chain.

400. A paper path buffer portion; 4001. a fixed mount; 4002. a swing rod; 4003. a first driving cylinder; 4004. and a second paper guide roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the turret type non-stop unwinding apparatus includes a roll lifting part 100, a roll rotating part 200, a cutting part 300, and a paper path buffering part 400 sequentially arranged along an advancing direction of printing paper 1.

As shown in fig. 2, 5 and 6, the paper roll lifting part 100 includes a supporting frame 1001, a tray frame 1002 driven by a first power mechanism to lift is slidably mounted on the supporting frame 1001, a V-shaped tray 1003 driven by an adjusting mechanism is disposed on the tray frame 1002, a buffer spring 1004 for bouncing up one side of the V-shaped tray 1003 is fixed at the bottom of the V-shaped tray 1003, a protection mechanism is disposed at one end of the tray frame 1002 close to the supporting frame 1001, in this embodiment, the buffer spring 1004 is a thick compression spring, and the V-shaped tray 1003 is composed of two plates hinged together, and the buffer spring 1004 is disposed at a hinged position in the middle of the V-shaped tray 1003.

As shown in fig. 7, the paper roll rotating portion 200 includes two opposite unwinding wall boards 2001 disposed on one side of the supporting frame 1001, each unwinding wall board 2001 is rotatably installed with a rotating disc 2002, a supporting and positioning mechanism is disposed between each rotating disc 2002 and the corresponding unwinding wall board 2001, the two rotating discs 2002 are driven to rotate by a second power mechanism, two paper roll clamping mechanisms for clamping a paper roll are disposed on the two rotating discs 2002, a transmission mechanism for driving the paper roll to rotate is disposed between each unwinding wall board 2001 and the paper roll clamping mechanism, two parallel and symmetrical connecting rods 2003 are fixed on the two rotating discs 2002, and a first paper guiding roller 2004 parallel to the connecting rod 2003 is disposed on an outer side of each connecting rod 2003.

As shown in fig. 10 and 11, the cutting portion 300 includes two sets of cutting devices disposed in a vertically symmetrical manner, each cutting device includes two support plates 3001 fixed on the inner wall of the corresponding unreeling wall 2001 and disposed oppositely, a sliding plate 3002 is slidably mounted on each support plate 3001, all the sliding plates 3002 are driven to slide by a third power mechanism, a pressing mechanism is disposed between each two sliding plates 3002 disposed oppositely, a cutting knife 3003 driven to move by the driving mechanism is disposed on the outer side of each pressing mechanism, and a correlation electric eye 3004 for detecting the position of the preparation paper roll 3 is fixed on a first sliding plate.

As shown in fig. 11 and 12, the paper path buffering portion 400 includes a fixing frame 4001 disposed on one side of the unreeling wall plate 2001, two oppositely disposed swing rods 4002 are rotatably mounted on one side of the fixing frame 4001 away from the unreeling wall plate 2001, each swing rod 4002 is driven to rotate by a first driving cylinder 4003 fixed on the fixing frame 4001, a plurality of second paper guiding rollers 4004 are rotatably mounted on the fixing frame 4001 and the swing rods 4002 from top to bottom in sequence, and each second paper guiding roller is parallel to the first paper guiding roller 2004.

As shown in fig. 3, 5 and 6, the adjusting mechanism includes a sliding seat 1006 slidably mounted in the tray frame 1002 through a plurality of advance and retreat rollers 1005, the sliding seat 1006 is driven by a second driving cylinder 1007 fixed on the tray frame 1002 to move, the V-shaped tray 1003 is slidably mounted in the sliding seat 1006 through a plurality of transverse rollers 1008, two coaxially disposed return springs 1009 are further fixed on the top of the V-shaped tray 1003, a free end of each return spring 1009 is fixed on the sliding seat 1006, in this embodiment, the return springs 1009 are fine extension springs.

As shown in fig. 3 and 4, the protection mechanism includes a cross bar 1010 hinged to one end of the tray frame 1002 and disposed transversely, two ends of the cross bar 1010 are respectively provided with a first guide rod 1011 perpendicular to the cross bar 1010, two limit brackets 1012 fixed to the ends of the tray frame 1002 and adapted to the first guide rod 1011, each first guide rod 1011 is slidably mounted on the corresponding limit bracket 1012, one side of each limit bracket 1012 is provided with a first limit switch 1013, each first limit switch 1013 is fixed to two ends of the tray frame 1002, each first guide rod 1011 is fixed with a contact plate 1014, and each contact plate 1014 is adapted to the corresponding first limit switch 1013.

As shown in fig. 7, 9 and 10, each supporting and positioning mechanism includes two positioning bearings 2005 disposed below the corresponding rotating disc 2002, each positioning bearing 2005 is rotatably mounted on an inner wall of the corresponding unwinding wall plate 2001, each positioning bearing 2005 abuts against a side wall of the corresponding rotating disc 2002, a plurality of eccentric bearings 2006 are further annularly disposed on the inner wall of each unwinding wall plate 2001, each eccentric bearing 2006 is rotatably mounted on the unwinding wall plate 2001 and abuts against the corresponding rotating disc 2002, a plurality of limit bearings 2007 are rotatably mounted on an outer side wall of each unwinding wall plate 2001 in an annular manner, each limit bearing 2007 abuts against an end face of the corresponding rotating disc 2002, in the present embodiment, each positioning bearing 2005 is a CF30-2B roller bearing, each eccentric bearing 2006 is a CFE30-2B eccentric roller bearing, and each limit bearing 2007 is a CF24 roller bearing.

As shown in fig. 14 and 15 together, each paper roll clamping mechanism includes a first clamping seat 2008 and a second clamping seat 2009 which are oppositely disposed and fixed to the corresponding rotary plate 2002.

All rotate on each first clamp seat 2008 and install on a first sleeve 2010, all slidable mounting has a first slide axle 2011 in each first sleeve 2010, and each first slide axle 2011 stretches into two one end of unreeling between the wallboard 2001 and all installs a first cover 2012, and the other end of each first slide axle 2011 all rotates and installs a first slide 2013 of the first slide axle 2011 of a perpendicular to, and each first slide 2013 drives the air cylinder 2014 drive removal by a third that is fixed in on corresponding first clamp seat 2008.

Each second clamping seat 2009 is rotatably mounted on a second sleeve 2015, a second sliding shaft 2016 coaxially arranged with the first sliding shaft 2011 is slidably mounted in each second sleeve 2015, a second top sleeve 2017 arranged opposite to the first top sleeve 2012 is mounted at one end of each second sliding shaft 2016, a second sliding plate 2018 perpendicular to the second sliding shaft 2016 is rotatably mounted at the other end of each second sliding shaft 2016, a motor seat 2020 for fixing a first speed reducing motor 2019 is fixed on each second clamping seat 2009, a driving pulley 2021 is fixedly mounted on a motor shaft of each first speed reducing motor 2019, a screw rod 2022 and a second guide rod 2023 which are parallel to each other are further rotatably mounted on each motor seat 2020, each screw rod 2022 and the second guide rod 2023 are parallel to the second sliding shaft 2016, a driven pulley 2024 is fixed at one end of each screw rod 2022, and a corresponding driven pulley 2021 and a corresponding driven pulley 2024 are provided with a driving belt 2025 by winding, the other end of each screw 2022 is threadedly mounted on the corresponding second slide 2018, the other end of each second guide bar 2023 is slidably mounted on the second slide 2018, and each second slide 2018 is further provided with a second limit switch 2026 for placing the screw 2022 to reach the maximum stroke.

The paper roll clamping mechanism adopts a non-inflatable shaft type clamping mode, effectively solves the problem of inconvenience in installation when an inflatable shaft is used, improves the efficiency of taking out and putting down a paper roll, improves the working efficiency of winding and unwinding equipment, can clamp a paper core without great manpower, and saves labor force; and when the width of printing paper 1 is narrower, can lengthen the extension length of first smooth axle 2011 and second smooth axle 2016 to first top cover 2012 and second top cover 2017 of extension, just so can make wide equipment also can print narrow paper, and first top cover 2012 and second top cover 2017 can be changed according to three cun and six cun refill simultaneously, can realize reliable clamp to the refill with guaranteeing that first top cover 2012 and second top cover 2017 can.

Each transmission mechanism comprises a first power shaft 2028 driven by a first driving motor 2027, each first power shaft 2028 is rotatably mounted at the middle position of the corresponding unreeling wallboard 2001, each first power shaft 2028 penetrates through the middle position of the corresponding rotating disc 2002, a first belt pulley 2029 is fixedly mounted on each first power shaft 2028, a second belt pulley 2030 matched with the first belt pulley 2029 is fixedly mounted on each first sleeve 2010, a synchronous belt 2031 is wound on each first belt pulley 2029 and the corresponding second belt pulley 2030 together, a tensioning wheel 2032 is rotatably mounted on the inner wall of each unreeling wallboard 2001, and each tensioning wheel 2032 abuts against the outer side wall of the corresponding synchronous belt 2031.

As shown in fig. 8 and 9, each pressing mechanism includes a rubber roller 3005 and a third paper guide 3006 parallel to each other and parallel to the cutting blade 3003, each end of each third paper guide 3006 is provided with a rotating base 3007, each third paper guide 3006 and the rubber roller 3005 are rotatably mounted on the corresponding rotating base 3007, each rotating base 3007 is rotatably mounted on the corresponding sliding plate 3002, and each rotating base 3007 is driven to rotate by a pressing cylinder 3008 fixed on the corresponding sliding plate 3002.

Moreover, each driving mechanism includes two cutting cylinders 3009 respectively disposed at two ends of the corresponding cutting knife 3003, a cylinder body of each cutting cylinder 3009 is mounted on the corresponding sliding plate 3002, a piston rod of each cutting cylinder 3009 is mounted on the corresponding cutting knife 3003, a third guiding rod 3010 fixed at one end of the corresponding cutting knife 3003 is further slidably mounted on each sliding plate 3002, and each third guiding rod 3010 is perpendicular to the cutting knife 3003.

In addition, the first power mechanism comprises a synchronous transmission shaft 1020 rotatably mounted at the upper end of the support frame 1001, the synchronous transmission shaft 1020 is parallel to the tray frame 1002, the synchronous transmission shaft 1020 is driven to rotate by a lifting motor 1015 fixed on the support frame 1001, a first driving chain wheel 1016 is fixedly mounted at each end of the synchronous transmission shaft 1020, two first driven chain wheels 1017 are rotatably mounted at the lower end of the support frame 1001, each first driven chain wheel 1017 is matched with the corresponding first driving chain wheel 1016, a first transmission chain 1018 is wound on each first driving chain wheel 1016 and the corresponding first driven chain wheel 1017 together, a lifting slide block 1019 slidably mounted on the support frame 1001 is fixed at each end of the tray frame 1002, each lifting slide block 1019 is fixed on the corresponding first transmission chain 1018, in the invention, six sliding wheels are rotatably mounted on each lifting slide block 1019, three sliding wheels are mounted on the upper and lower sides respectively, the intensity of movable pulley is good and structural stability is good, promotes slider 1019 and passes through these six movable pulleys slidable mounting on support frame 1001, has improved the stationarity and the smoothness nature of tray frame 1002 when sliding from top to bottom.

The second power mechanism includes a second power shaft 2033 rotatably mounted on the two unreeling wall boards 2001, the second power shaft 2033 is driven by a second speed reduction motor 2034 to rotate, two ends of the second power shaft 2033 are respectively and fixedly mounted with a driving gear 2035, each unreeling wall board 2001 is rotatably mounted with a middle gear 2036 engaged with the corresponding driving gear 2035, and the side wall of each rotating disc 2002 is further provided with gear teeth 2037 adapted to the middle gear 2036.

The third power mechanism comprises a driving shaft 3011 rotatably mounted at one end of two opposite supporting plates 3001, the driving shaft 3011 is driven to rotate by a second driving motor 3012 fixed on one supporting plate 3001, a second driving sprocket 3013 is fixedly mounted at one end of the driving shaft 3011, in addition, a driven shaft 3014 is installed to the common rotation of the one end of two backup pads 3001 that set up relatively, the fixed mounting of driven shaft 3014 has the second driven sprocket 3015 with second drive sprocket 3013 looks adaptation, on second driven sprocket 3015 and the second drive sprocket 3013 jointly around being equipped with a second drive chain 3016, respectively fixed mounting is equallyd divide at the both ends of drive shaft 3011 and the both ends of driven shaft 3014 has a third drive sprocket 3017, the other end of each backup pad 3001 all rotates and installs a third driven sprocket 3018, all around being equipped with a third drive chain 3019 on each third driven sprocket 3018 and the corresponding third drive sprocket 3017 jointly.

The method of the invention is used as follows:

firstly, after an operator places a prepared paper roll 3 on a V-shaped disc 1003 on a tray frame 1002, a lifting motor 1015 is started, the lifting motor 1015 drives a sliding seat 1006 and the tray frame 1002 to move upwards through power transmission, so that the tray frame 1002 moves to a height parallel to a paper roll clamping mechanism, a second driving air cylinder 1007 is started, a piston rod of the second driving air cylinder 1007 stretches out to drive the sliding seat 1006 and the V-shaped disc 1003 to stretch out of the tray frame 1002, and a paper core of the prepared paper roll 3 on the V-shaped disc 1003 is aligned to a first top sleeve 2012 and a second top sleeve 2017 in the paper roll clamping mechanism.

Secondly, the first reducing motor 2019 and the third driving cylinder 2014 are started, the piston rod of the third driving cylinder 2014 retracts to drive the first sliding plate 2013 and the first sliding shaft 2011 to move, so that the first top sleeve 2012 moves towards the direction of the prepared paper roll 3 and is finally inserted into one end of the paper core on the prepared paper roll 3 to fix one end of the paper core, the first reducing motor 2019 drives the screw rod 2022 to rotate through power transmission, the screw rod 2022 rotates to drive the first sliding plate 2013 and the first sliding shaft 2011 to move, the second top sleeve 2017 moves towards the direction of the prepared paper roll 3 and is finally inserted into the other end of the paper core on the prepared paper roll 3, and clamping and fixing of the prepared paper roll 3 are achieved.

Thirdly, when the roll diameter of the original paper roll 2 reaches the minimum value, the original paper roll 2 needs to be changed, at this time, the second speed reducing motor 2034 is started and drives the rotating disc 2002 to rotate through power transmission, the original paper roll 2 rotates to the side far away from the cutting part 300, the prepared paper roll 3 rotates to the side close to the cutting part 300, the first speed reducing motor 2019 drives the sliding plate 3002 to slide on the corresponding supporting plate 3001 and enable the two cutting knives 3003 to gradually approach, when the position of the prepared paper roll 3 is detected by the radio eye 3004, the first speed reducing motor 2019 stops running, then the first driving motor 2027 drives the first power shaft 2028 to rotate through power transmission and drives the prepared paper roll 3 to start rotating through power transmission, and when the linear speed of the prepared paper roll 3 is the same as that of the original paper roll 2, the cutting action is started;

fourthly, as shown in fig. 12 and 13, if the front side of the printing paper 1 is upward, the cutter 3003 device located above is started to cut, and if the reverse side of the printing paper 1 is upward, the cutter 3003 device located below is started to cut, the piston rod of the pressing cylinder 3008 corresponding to the started cutter 3003 device is retracted to drive the rotating seat to rotate, so that the corresponding rubber roller 3005 is pressed on the preparation paper roll 3, the printing paper 1 and the double-sided adhesive pasted on the preparation paper roll 3 before being lifted are adhered together, the piston rod of the cutting cylinder 3009 extends out to drive the cutter 3003 to be close to the printing paper 1 and cut the printing paper 1, and the roll change of the paper roll is completed; after cutting, the piston rod of the cutting cylinder 3009 is retracted to drive the cutter 3003 to be far away from the printing paper 1, meanwhile, the piston rod of the pressing cylinder 3008 extends out to enable the rubber roll 3005 to be separated from the prepared paper roll 3, and the first driving motor 2027 rotates reversely to drive the two cutting devices to gradually form base paper, and the cutting devices are retracted to the far ends;

in the fifth step, the printing paper 1 passes by the second paper guide roller 4004 in the paper path buffer portion 400 from top to bottom in order to guide and buffer the printing paper 1.

In summary, the turret type non-stop unreeling device provided by the invention adopts a shaftless two-side synchronous transmission mode, solves the problem of poor unreeling stability and accuracy, is suitable for a front unreeling mode and a back unreeling mode, and has the characteristics of high transmission stability and safety and suitability for cutting paper rolls with smaller winding diameters.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.