CN219133640U - Anti-collision limiting gravity tensioning roller device - Google Patents

Abstract

The utility model provides a spacing gravity tensioning roller device of anticollision, the dancer roll both ends of the device pass through gyro wheel slidable mounting in the vertical spout of both ends sliding support to be equipped with the rack meshing of gear and one side in the inboard of gyro wheel, consequently the dancer roll can slide from top to bottom along the vertical spout at uniform velocity, provide the tensioning force for printing medium through the gravity of dancer roll self, when printing medium's tensioning force changes, the dancer roll can slide from top to bottom along with it, remain printing medium all the time and be in the tensioning state, the problem that the elasticity attenuation of spring influences the tensioning effect has been solved to gravity tensioning's mode, and the reciprocates stroke of dancer roll is great, can adapt to the great tensioning range of printing medium and change, overall structure is simple stable, guaranteed printing medium's in-process tensioning effect, do benefit to improvement product quality.

Description

Anti-collision limiting gravity tensioning roller device

Technical Field

The utility model relates to the field of printers, in particular to an anti-collision limiting gravity tensioning roller device.

Background

The printer in the industrial field generally firstly installs the unprinted coiled printer on the unreeling roller shaft, the middle passes through the printing platform, the other end is installed on the reeling roller shaft, the unreeling roller shaft and the reeling roller shaft synchronously act, the printing medium is driven to transversely move on the printing platform, and the printing mechanism is printed by the printing trolley above in the process. However, the printing medium has a certain ductility, so that elastic deformation can be generated in the process of moving under tension, the tension is insufficient, printing or rolling cannot be performed smoothly, and the product quality is affected; the tensioning amplitude of the patent is the elastic deformation amplitude of the spring, so the tensioning amplitude is limited, the elastic attenuation of the spring can also influence the tensioning effect after long-term work, the tensioning effect and the product quality are not beneficial to guarantee, and the tensioning effect and the product quality are required to be improved.

Disclosure of Invention

In order to solve the problems, the utility model provides an anti-collision limiting gravity tensioning roller device.

The technical scheme of the utility model is as follows: the utility model provides a spacing gravity tensioning roller device of anticollision, including installing the sliding support in both sides frame, sliding connection's between two sliding support regulating roll, the regulating roll includes middle main shaft and rotates the epaxial roll body of suit in the main shaft, sliding support's medial surface middle is equipped with the vertical spout that both ends are sealed, this vertical spout is established to the square groove, the upper end and the lower extreme of vertical spout are all fixed mounting has the crashproof piece, the crashproof piece is established to the circular piece, rack parallel mount in an border department of vertical spout, the coaxial fixed suit of roller bearing tip of regulating roll is equipped with gear and gyro wheel, gyro wheel rolling sleeve is in vertical spout, the diameter of gyro wheel matches with the width of vertical spout, the tooth meshing of gear and rack inboard;

the lower end of one side sliding support is provided with a support, the support is an L-shaped support, and a distance sensor corresponding to the regulating roller is arranged on the support.

Preferably, the width of the roller is the same as the depth of the vertical chute, and the roller is used for matching to form a sliding pair.

Preferably, the inner side of the rack protrudes out of the vertical chute, and the size of the gear is smaller than that of the roller, so that a structure for limiting the roller is formed.

Preferably, the anti-collision block is made of rubber.

Preferably, the upper end of the sliding support is provided with an opening structure for sleeving the roller, the opening is provided with a connecting plate, and the anti-collision block at the upper end of the vertical sliding chute is arranged in the middle of the bottom surface of the connecting plate.

Preferably, the inner side surface of the vertical chute is provided with a groove along the length direction of the vertical chute.

The beneficial technical effects of the utility model are as follows:

(1) The utility model provides a device's dancer roll both ends pass through gyro wheel slidable mounting in the vertical spout of both ends sliding support to be equipped with the rack meshing of gear and one side in the inboard of gyro wheel, consequently the dancer roll can slide from top to bottom along the vertical spout at uniform velocity, provide the tensioning force for print media through the gravity of dancer roll self, when print media's tensioning force changes, the dancer roll can slide from top to bottom along with it, remain print media throughout and be in tensioning state, the problem of the elasticity decay influence tensioning effect of spring has been solved to the mode of gravity tensioning, and the reciprocates stroke of dancer roll is great, can adapt to the great tensioning range of print media and change, and overall structure is simple and stable, guaranteed print media's tensioning effect in the printing process, do benefit to improvement product quality.

(2) The device is middle, and sliding support's vertical spout both ends all are equipped with the anticollision piece, and the gyro wheel at dancer roll both ends can be with the anticollision piece contact when the extreme position at both ends is moved to vertical spout in, buffers most collision force, can not destroy the stability of being connected between gear, rack and the dancer roll because of the vibration force that the collision produced, and the fault rate is low, does benefit to the steady operation of guaranteeing the device.

(3) The sliding support lower extreme of the device is equipped with distance sensor, and this sensor can the real-time supervision regulating roller reciprocates the range, consequently can master the tensioning force condition of print medium in real time, is convenient for in time adjust the tensioning force according to the production situation.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a partial view of FIG. 1;

FIG. 3 is a schematic diagram of the front view of the present utility model;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

fig. 5 is a B-B cross-sectional view of fig. 3.

In the figure, 11, a sliding support, 111, a vertical sliding chute, 112, a groove, 113 connecting plates, 12, an adjusting roller, 121, gears, 122, rollers, 13, an anti-collision block, 14, a rack and 15, and a distance sensor.

Description of the embodiments

Referring to fig. 1-5 of the specification, an anti-collision limiting gravity tensioning roller device comprises a sliding support 11 installed on two side frames, and a regulating roller 12 connected between the two sliding supports 11 in a sliding manner, wherein the regulating roller 12 comprises an inner rolling shaft and a roller body connected to the rolling shaft in a rotating manner through a bearing, a vertical sliding groove 111 with two closed ends is formed in the middle of the inner side surface of the sliding support 11, an anti-collision block 13 made of rubber is fixedly installed at the upper end and the lower end of the vertical sliding groove 111, racks 14 are parallelly installed at one edge of the vertical sliding groove, a gear 121 and a roller 122 are coaxially and fixedly sleeved at the end part of the rolling shaft of the regulating roller 12, the roller 122 is sleeved in the vertical sliding groove 111 in a rolling manner, the diameter of the roller is matched with the width of the vertical sliding groove, teeth on the inner side of the gear 121 are meshed with teeth on the inner side of the racks 14, and when the roller 122 slides up and down in the vertical sliding manner in the vertical sliding groove 111 and contacts with the anti-collision block 13, the anti-collision block 13 can buffer most collision force, and vibration force generated by collision force cannot damage stability of connection among the gears 121, the racks and the regulating roller 12.

The lower end of the one-side sliding support 11 is provided with a bracket, and a distance sensor 15 corresponding to the regulating roller 12 is arranged on the bracket and used for monitoring the up-and-down movement amplitude of the regulating roller 12 in real time.

The width of the roller 122 is the same as the depth of the vertical chute, the inner side of the rack 14 protrudes out of the vertical chute 111, the size of the gear is smaller than that of the roller, a structure for limiting the roller 122 is formed, the arrangement is blocked at the notch of the vertical chute 111 by means of the rack 14, and limiting is provided for the up-and-down rolling of the roller 122.

The upper end of the sliding support is provided with an opening structure and is used for sleeving the roller into the vertical sliding groove from the opening, the opening is provided with a connecting plate 113, and an anti-collision block at the upper end of the vertical sliding groove is arranged in the middle of the bottom surface of the connecting plate 113; the inner side surface of the vertical chute is provided with a groove 112 along the length direction, and the groove 112 is used for reducing the contact area between the vertical chute and the side surface of the roller, so as to reduce the friction force between the vertical chute and the roller.

The working process of the utility model is as follows: the both ends of dancer roll 12 slide from top to bottom in the vertical spout 111 of sliding support 11 to provide the tensioning force for the scroll, provide the tensioning force for printing medium through dancer roll self gravity, when printing medium's tensioning force changes, the dancer roll can slide from top to bottom along with it, keep printing medium in tensioning state all the time, the gyro wheel 122 at dancer roll 12 both ends can be in contact with crashproof piece 13 when the extreme position at both ends is moved to in vertical spout 111, crashproof piece 13 can cushion out most collision force, this in-process, the distance sensor 15 that sliding support 11 lower extreme set up can the real-time supervision dancer roll 12 reciprocates the range, consequently can grasp the tensioning force condition of scroll in real time.

Claims (6)

1. The utility model provides a spacing gravity tensioning roller device of anticollision, includes the regulating roll of sliding connection between sliding support, two sliding support who installs in both sides frame, characterized by:

the middle of the inner side surface of the sliding support is provided with a vertical sliding groove with two closed ends, the upper end and the lower end of the vertical sliding groove are fixedly provided with anti-collision blocks, one edge of the vertical sliding groove is provided with racks in parallel, the end part of a roller shaft of the regulating roller is coaxially and fixedly sleeved with a gear and a roller, the roller is sleeved in the vertical sliding groove in a rolling way, the diameter of the roller is matched with the width of the vertical sliding groove, and teeth on the inner side of the gear and the racks are meshed;

the lower end of one side sliding support is provided with a bracket, and a distance sensor corresponding to the regulating roller is arranged on the bracket.

2. The bump stop gravity tensioner of claim 1, wherein: the width of the roller is the same as the depth of the vertical chute.

3. The bump stop gravity tensioner of claim 2, wherein: the inner side of the rack protrudes out of the vertical chute, and the size of the gear is smaller than that of the roller, so that a structure for limiting the roller is formed.

4. The bump stop gravity tensioner of claim 1, wherein: the anti-collision block is made of rubber.

5. The bump stop gravity tensioner of claim 1, wherein: the upper end of the sliding support is provided with an opening structure, a connecting plate is arranged at the opening, and an anti-collision block at the upper end of the vertical sliding chute is arranged in the middle of the bottom surface of the connecting plate.

6. The bump stop gravity tensioner of claim 1, wherein: the inner side surface of the vertical chute is provided with a groove along the length direction of the vertical chute.

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