CN218931351U

CN218931351U - Paper uncoiling small tension automatic control device

Info

Publication number: CN218931351U
Application number: CN202223378680.XU
Authority: CN
Inventors: 叶尉东; 张世雄; 李云峰
Original assignee: GUANGDONG TANGO INFORMATION PAPER Ltd
Current assignee: GUANGDONG TANGO INFORMATION PAPER Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-04-28
Anticipated expiration: 2032-12-16

Abstract

The utility model relates to a paper unwinding small tension automatic control device which is characterized by comprising a unwinding shaft, a friction wheel, a damping mechanism, a connecting rod mechanism, a flattening roller, a tension roller, a steering roller, a paper pressing wheel and other structures, wherein a swinging roller of the connecting rod mechanism ascends under the action of paper tension, and a two-stage lever consisting of a swinging rod, a connecting rod, a hook head rod and an upper fulcrum and a lower fulcrum is utilized to drive the damping mechanism to move, so that a damping belt gradually loosens the friction wheel, and the paper unwinding speed is increased; when the uncoiling tension is reduced, the swinging roller descends under the action of the gravity of the balancing weight, the link mechanism drives the damping mechanism to obliquely ascend, so that the damping belt gradually hugs the friction wheel, the paper tension is increased, and the stable uncoiling tension of the paper is achieved; simultaneously, the tension of the paper can be adjusted by adjusting the position of the balancing weight, so that the uncoiling tension is kept relatively constant; the technology solves the technical problems of proper and stable uncoiling tension of the printed collated paper.

Description

Paper uncoiling small tension automatic control device

Technical Field

The utility model relates to paper processing equipment, in particular to an automatic control device for paper uncoiling with small tension.

Background

The paper tension is generally controlled by the roll paper processing equipment by adopting a magnetic powder brake to generate resistance to tension paper, and the magnitude of the paper tension is controlled by adjusting the magnitude of braking force generated by the magnetic powder brake by adjusting current, the larger the paper roll is, the larger the magnetic powder brake which needs to be configured is, the larger the constant tension is needed in the paper processing process, the magnitude of the current which is input into the magnetic powder brake is adjusted by adopting a tension detection device, so that the purpose of constant paper tension is achieved, but the purpose of proper and stable tension is difficult to achieve when the paper is used for uncoiling after printing.

In particular, the term "hinge" is used in this specification as a connection of parts, that is, two parts are connected by a cylindrical pin, the cylindrical pin is fixed on one of the parts, and the other part can rotate around the cylindrical pin.

Disclosure of Invention

The utility model aims to provide a paper uncoiling small-tension automatic control device, which solves the technical problems of proper and stable uncoiling tension of printed collated paper.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the paper uncoiling small tension automatic control device comprises a main device wallboard, wherein a freely rotatable uncoiling shaft is arranged on the wallboard, the uncoiling shaft is used for fixing a paper roll in an air-expanding shaft mode, and a cantilever is arranged; the connecting rod mechanism is hinged on the wallboard through an upper shaft pin and a lower shaft pin; the wallboard is also provided with three rollers which can freely rotate on the left side of the connecting rod mechanism: the paper pressing device comprises an upper flattening roller, a middle tension roller and a lower steering roller, wherein a set of paper pressing wheels are further arranged on the left side of the tension roller.

According to a further technical scheme, the damping mechanism comprises a damping belt which surrounds at least half of the outer surface of the friction wheel and is fixed on a Y-shaped fork handle, the damping belt is hinged with the connecting rod mechanism through a sliding block of the Y-shaped fork handle, and the position of the damping belt can be adjusted through an adjusting screw.

According to a further technical scheme, the connecting rod mechanism is hinged with the upper supporting point and the lower supporting point through the swinging rod, the connecting rod and the hook head rod to form a two-stage lever, the displacement distance is gradually reduced by utilizing the two-stage lever, and meanwhile the application force is increased.

According to the further technical scheme, the balancing weight capable of adjusting the position is arranged on the left side of the swinging rod to adjust the lifting force of the swinging rod, namely the tension of paper, and the right end of the swinging rod is connected with the spring arranged on the wallboard to increase the auxiliary force.

Compared with the prior art, the utility model has the beneficial effects that: according to the paper uncoiling small tension automatic control device, the uncoiling shaft arranged on the wallboard is fixedly arranged close to the end of the wallboard, the friction wheel, the damping mechanism, the connecting rod mechanism and the connecting rod mechanism are hinged to the wallboard through the upper shaft pin and the lower shaft pin, the uncoiling roller, the tension roller, the steering roller, the paper pressing wheel and the like; when the uncoiling speed of paper is increased and the uncoiling tension is rapidly reduced under the inertia action of the paper, the gravity of the balancing weight is overcome, the swinging roller descends under the gravity action of the balancing weight, the connecting rod mechanism drives the damping mechanism to obliquely ascend, the damping belt gradually holds the friction wheel tightly, the rotation speed of the uncoiling shaft is gradually reduced under the action of friction force, and therefore the uncoiling speed of the paper is reduced, and the paper tension is increased; by adopting the two-stage lever principle control method, a larger friction force between the damping belt and the friction wheel can be obtained by adopting a smaller paper uncoiling tension, so that the paper uncoiling tension is stable; meanwhile, the rising force of the swinging rod can be adjusted by adjusting the position of the balancing weight, the force is the tension of paper, and when the gravity of the balancing weight is insufficient, the auxiliary force can be increased through the spring connected with the right end of the swinging rod, so that the uncoiling tension is kept relatively constant.

In summary, the paper unwinding small tension automatic control device solves the technical problems of proper and stable unwinding tension of the printed collated paper.

Drawings

Fig. 1 is a schematic diagram of the apparatus of the present utility model.

Fig. 2 is a schematic view of the device of the present utility model in operation up to a limit.

Description of the drawings: 1-wallboard; 2-unwinding the reel; 3-damping mechanism, 4-link mechanism, 5-flattening roller, 6-tension roller, 7-steering roller, 8-platen roller, 9-roll paper.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of embodiments of the present utility model will be given by way of example with reference to the accompanying drawings.

The paper unwinding small tension automatic control device in the embodiment shown in the attached figure 1 comprises a main equipment wallboard 1, wherein a freely rotatable unwinding shaft 2 is arranged on a cantilever on the wallboard 1, the unwinding shaft 2 adopts an air expansion shaft mode to fix a paper roll, a friction wheel 21 is fixedly arranged at the end of the unwinding shaft 2 close to the wallboard 1, a set of floating damping mechanism 3 is arranged outside the friction wheel 21, the damping mechanism 3 is obliquely hinged on a set of connecting rod mechanism 4, and two supporting pins 11 are arranged on the wallboard below, and the supporting pins 11 are used for limiting the loosening and full falling positions of the damping mechanism 3; the link mechanism 4 is hinged on the wallboard 1 through an upper shaft pin 12 and a lower shaft pin 13; three rollers capable of freely rotating are further arranged on the left side of the connecting rod mechanism 4 on the wallboard 1: an upper flattening roller 5, a middle tension roller 6 and a lower steering roller 7; a set of paper pressing wheels 8 are also arranged on the left side of the tension roller 6, and the paper pressing wheels 8 are also fixedly arranged on the wallboard 1.

The damping mechanism 3 comprises a damping belt 31 encircling at least half of the circumference of the outer surface of the friction wheel 21, a reinforcing steel belt 32 is wrapped outside the damping belt 31, the damping belt 31 and the reinforcing steel belt 32 are overlapped together and fixed on a Y-shaped fork handle 33 by screws, a long hole is formed in the middle of the Y-shaped fork handle 33, a sliding block 34 fixed on the connecting rod mechanism 4 is arranged in the long hole, the sliding block 34 is connected with an adjusting screw 35, and the adjusting screw 35 is installed on the Y-shaped fork handle 33 by threads and locked by a locking nut 36.

The link mechanism 4 comprises a swinging rod 41, a swinging roller 42 is arranged at the left end head of the swinging rod 41, a link rod 43 is hinged in the middle vertical direction, and a hook rod 44 is hinged at the upper end of the link rod 43; the right end of the swing rod 41 is connected with a spring 45, the upper end head of the spring 45 is fixed with a mounting head 451 with a long hole, and the mounting head 451 is mounted on the wallboard 1 through a mounting screw 452; the left side of the swinging rod 41 is also provided with a balancing weight 46 with an adjustable position, and a limiting nail 14 is fixed on the wallboard 1 above the swinging rod 41 close to the right side; the middle of the swing rod 41 is provided with a hinge hole matched with the lower shaft pin 13 at the right side of the connecting rod 43, the right end of the hook head rod 44 is provided with a hook head 441, and the hook head 441 is provided with a hinge hole matched with the upper shaft pin 12. The slider 34 and the Y-shaped fork 33 of the damper mechanism 3 are mounted on the hook 441 with pins, large washers, and cotter pins, so that the slider can rotate relative to the hook 441 and slide in the Y-shaped fork 33.

The use principle of the link mechanism 4 is that a two-stage lever mechanism is utilized to reduce the displacement distance and increase the applied force, in particular, a one-stage lever is a swinging rod 41, and the lower shaft pin 13 is utilized as a fulcrum to drive the proximal link 43 to reduce the displacement (increase the force) and drive the hook rod 44 to ascend or descend through the ascending or descending of the swinging roller 42 (and the balancing weight 46) at the distal end; the second lever is a hook rod 44, and by using the upper shaft pin 12 as a fulcrum and by ascending or descending the connecting rod 43 at the far end, the hook 441 at the near end is driven to shrink displacement (and increase force) to ascend or descend in a rotating way, and the hook 441 drives the damping mechanism 3 to control the tightness degree of the damping belt 31 encircling the friction wheel 21 through the displacement and the obtained force; the principle of the two-stage lever mechanism ensures that a larger friction force can be obtained between the damping belt 31 and the friction wheel 21 by adopting smaller paper unwinding tension, thereby achieving the purpose of controlling the paper unwinding tension.

The method for using the paper uncoiling small tension automatic control device of the embodiment comprises the following steps:

device initial adjustment: as shown in fig. 1, the position of the balancing weight 46 of the link mechanism 4 is adjusted to enable the swinging roller 42 to descend to the lowest position by gravity, namely the swinging rod 41 rotates around the lower shaft pin 13 to the right to prop against the limit nail 14; the relative positions of the sliding block 34 and the Y-shaped fork handle 33 are adjusted through the adjusting screw 35 and the locking nut 36, so that the damping belt 31 completely hugs the friction wheel 21; the tightness of the mounting screw 452 is adjusted so that the mounting head 451 can slide freely.

Initial adjustment of paper uncoiling: the paper roll 9 is arranged on the unwinding shaft 2 and fixed in an air-expanding mode, the head of the paper is unwound anticlockwise above, the paper sequentially bypasses the flattening roller 5, the swinging roller 42 and the tension roller 6, the paper pressing wheel 8 presses the paper after bypassing the tension roller 6, bypasses the steering roller 7, passes through other devices of the main equipment, and forms the tension of the paper by tensioning the paper of the main equipment, and the paper roll 9 is passively unwound under the driving of the main equipment.

Because the main equipment of gathering normally adopts the mode of conveying hole or pinch roller to draw the paper, the tension that produces is comparatively little, and the stock form 9 can cause the uncoiling speed to be greater than paper conveying speed relatively under the effect of inertia when opening a book to cause the excessive uncoiling of paper and reduce tension, owing to there is the pressure effect of pinch roller 8, this tension reduces the tension of only opening a reel 2 to the tension roller 6 this uncoiling section that does not influence the paper transport of other parts of main equipment, and the tension of opening a reel 2 to the tension roller 6 this uncoiling section tension is called as uncoiling tension, and the tension of paper transport of other parts of main equipment can be called as transport tension, and transport tension transfer to the uncoiling section becomes uncoiling tension.

Uncoiling tension automatic adjustment: under the action of conveying tension, the paper pulls the swinging roller 42 to rise against the gravity of the balancing weight 46, drives the swinging rod 41 to rotate around the lower shaft pin 13, drives the connecting rod 43 to rise again, and drives the hook rod 44 to rotate around the upper shaft pin 12, so that the hook 441 drives the damping mechanism 3 to move obliquely leftwards and downwards, and the damping belt 31 gradually loosens the friction wheel 21, so that the unwinding shaft 2 rotates to be the winding paper 9 to be unwound under the traction action of the paper conveying tension; the higher the swing roller 42 rises, the more the damping belt 31 releases the friction wheel 21, so that the paper is unwound faster; when the swinging roller 42 rises to the damping belt 31 to completely loosen the friction wheel 21, the paper uncoiling speed is increased, the uncoiling tension is rapidly reduced under the inertia action of the paper roll, the swinging roller 42 falls under the gravity action of the balancing weight 46 to overcome the gravity of the balancing weight 46, the link mechanism 4 drives the damping mechanism 3 to obliquely rise, the damping belt 31 gradually hugs the friction wheel 21, the uncoiling shaft 2 gradually reduces the rotating speed under the friction force, so that the paper roll uncoils slowly, the paper returns to the uncoiling tension, and the uncoiling tension is kept relatively constant. As shown in fig. 2.

In some cases, a larger conveying tension and unwinding tension are needed, for example, when the paper is thicker and the paper is wider, the weight of the balancing weight 46 at the unwinding section is insufficient, and an auxiliary force needs to be added, and then the spring 45 can be used to apply the auxiliary force, and the adjustment method is that: in the initial adjustment stage of paper unwinding, the tightness of the mounting screw 452 is adjusted, and the mounting screw 452 is locked to prevent the mounting head 451 from sliding, so that the spring 45 acts; the magnitude of the assist force can be adjusted according to the height of the mounting head 451, and the higher the position, the larger the assist force is, and the position can be adjusted according to the magnitude of the assist force required; in the automatic uncoiling tension adjusting stage in the embodiment, under the action of the conveying tension, the paper pulls the swinging roller 42 to rise against the gravity of the balancing weight 46 and the spring force of the spring 45, the swinging rod 41 is driven to rotate around the lower shaft pin 13, the swinging rod 41 drives the connecting rod 43 to rise again, the hook head rod 44 is driven to rotate around the upper shaft pin 12, the hook head 441 drives the damping mechanism 3 to move obliquely leftwards and downwards, the damping belt 31 gradually loosens the friction wheel 21, and the uncoiling shaft 2 rotates to form the coiled paper 9 to be uncoiled under the traction action of the paper conveying tension; the higher the swing roller 42 rises, the more the damping belt 31 releases the friction wheel 21, so that the paper is unwound faster; when the swinging roller 42 rises to the position that the damping belt 31 completely loosens the friction wheel 21, the paper uncoiling speed is increased, and when the uncoiling tension is rapidly reduced under the inertia action of the roll paper, and is insufficient to overcome the gravity of the balancing weight 46 and the spring force of the spring 45, the swinging roller 42 descends under the simultaneous action of the gravity of the balancing weight 46 and the spring force of the spring 45, the link mechanism 4 drives the damping mechanism 3 to obliquely ascend, so that the damping belt 31 gradually holds the friction wheel 21, the uncoiling shaft 2 gradually reduces the rotation speed under the action of the friction force, the roll paper uncoils slowly, and the paper recovers the uncoiling tension, so that the uncoiling tension is kept relatively constant. It is evident that the result of this is an increase in the amount of unwinding tension due to the spring force of the spring 45.

The technical scheme of the utility model uses common materials, is suitable for industrial production, and has realizability and practicability.

Claims

1. The utility model provides a little tension automatic control device is opened a book to paper, includes main equipment wallboard (1), but cantilever mounting has a free rotation's uncoiling shaft (2) on wallboard (1), and uncoiling shaft (2) adopt the fixed scroll of physiosis axle mode, its characterized in that: the uncoiling shaft (2) is fixedly provided with a friction wheel (21) near the end of the wallboard (1), a set of floating damping mechanism (3) is arranged outside the friction wheel (21), the damping mechanism (3) is obliquely hinged on a set of connecting rod mechanism (4), and two supporting pins (11) arranged on the wallboard are arranged below the damping mechanism; the connecting rod mechanism (4) is hinged on the wallboard (1) through an upper shaft pin (12) and a lower shaft pin (13); three rollers capable of freely rotating are further arranged on the left side of the connecting rod mechanism (4) on the wallboard (1): an upper flattening roller (5), a middle tension roller (6) and a lower steering roller (7); a paper pressing wheel (8) is also arranged on the left side of the tension roller (6), and the paper pressing wheel (8) is also fixedly arranged on the wallboard (1).

2. The paper unwinding small tension automatic control device according to claim 1, wherein: the damping mechanism (3) comprises a damping belt (31) encircling at least half circumference of the outer surface of the friction wheel (21), a reinforcing steel belt (32) is wrapped outside the damping belt (31), the damping belt (31) and the reinforcing steel belt (32) are overlapped together and fixed on a Y-shaped fork handle (33) through screws, a long hole is formed in the middle of the Y-shaped fork handle (33), a sliding block (34) fixed on the connecting rod mechanism (4) is arranged in the long hole, the sliding block (34) is connected with an adjusting screw (35), and the adjusting screw (35) is installed on the Y-shaped fork handle (33) through threads and locked through a locking nut (36).

3. The paper unwinding small tension automatic control device according to claim 2, wherein: the connecting rod mechanism (4) comprises a swinging rod (41), a swinging roller (42) is arranged at the left end head of the swinging rod (41), a connecting rod (43) is hinged in the middle vertical direction, and a hook rod (44) is hinged at the upper end of the connecting rod (43); the right end of the swing rod (41) is connected with a spring (45), the upper end head of the spring (45) is fixed with a mounting head (451) with a long hole, and the mounting head (451) is mounted on the wallboard (1) through a mounting screw (452); the left side of the swinging rod (41) is also provided with a balancing weight (46) with an adjustable position, and a limit nail (14) is fixed on the right side Fang Qiangban (1) of the swinging rod (41); the middle of the swinging rod (41) is provided with a hinge hole matched with the lower shaft pin (13) at the right side of the connecting rod (43), the right end of the hook head rod (44) is provided with a hook head (441), and the hook head (441) is provided with a hinge hole matched with the upper shaft pin (12).