CN220684219U - Tension adjusting device for transmission of woven bag printer - Google Patents

Abstract

The application relates to a tension adjusting device for transmission of a woven bag printer, and relates to the field of woven bag printing and processing equipment. The unreeling device comprises a base, wherein an empty shaft is rotationally connected to the base and is used for being sleeved at the end part of an unreeling roller, and a plurality of locking screws which are propped against the unreeling roller are connected to the empty shaft through threads; the hollow shaft is provided with an arc-shaped friction pad, the base is provided with two elastic telescopic components symmetrically distributed about the axis of the hollow shaft, the two elastic telescopic components are respectively connected with two ends of the friction pad, and the friction pad applies pressure to the hollow shaft under the driving of the two elastic telescopic components. The utility model has the effect that the woven bag keeps tensioning and straightness in the transmission process.

Description

Tension adjusting device for transmission of woven bag printer

Technical Field

The application relates to the field of woven bag printing and processing equipment, in particular to a tension adjusting device for transmission of a woven bag printer.

Background

The woven bag is one kind of plastic bag, and is obtained by weaving various chemical plastic raw materials such as polyethylene, polypropylene and the like, and is mainly used for packaging and packaging various articles, and has wide industrial application. The enterprises can print corresponding patterns or characters on the surface of the woven bags by adopting a printer so as to represent the products in the bags or carry out corresponding propaganda.

When the existing printing machine works, the woven bag roll is sleeved on the unreeling roller, the traction roller clamps the woven bag to be conveyed forwards, the woven bag roll rotates under the action of tensile force to continuously release the woven bag, but due to the difference of printing speeds, the tension of the woven bag is different, the condition that the unreeling roller rotates under the action of inertia to release the speed to exceed the traction speed easily occurs at the moment, the woven bag is loosened between the unreeling roller and the traction roller, and further the woven bag is offset or wrinkled in the conveying process.

Disclosure of Invention

In order to solve the problem that the woven bag is loosened between the unreeling roller and the traction roller and is offset or wrinkled in the conveying process, the application provides a tension adjusting device for conveying of a woven bag printing machine.

The application provides a braided bag printing machine transmission is with tension adjusting device adopts following technical scheme:

the tension adjusting device for the transmission of the woven bag printer comprises a base, wherein an empty shaft is rotationally connected to the base, the empty shaft is used for being sleeved at the end part of an unreeling roller, and a plurality of locking screws propped against the unreeling roller are connected to the empty shaft in a threaded manner;

the novel air shaft is characterized in that an arc-shaped friction pad is arranged on the air shaft, two elastic telescopic assemblies symmetrically distributed on the axis of the air shaft are arranged on the base, the two elastic telescopic assemblies are respectively connected with two ends of the friction pad, and the friction pad applies pressure to the air shaft under the driving of the two elastic telescopic assemblies.

Optionally, the elastic expansion assembly includes sleeve and loop bar, the sleeve articulates on the base, the loop bar part slides and pegs graft in the sleeve, and the loop bar is located the one end in the sleeve and link to each other with the sleeve bottom through the spring, the loop bar is located the one end outside the sleeve and is connected with the drag hook, friction pad tip is equipped with the pull ring with drag hook looks lock.

Optionally, both ends of spring all are connected with the cushion, one of them the cushion corresponds with the sleeve in the bottom, another the cushion corresponds with the loop bar, bottom and loop bar tip all have seted up the slot that supplies cushion male in the sleeve, and sleeve and loop bar all are connected with the cushion that corresponds respectively through countersunk head screw.

Optionally, a screw hole extending along the length direction of the loop bar is formed in the loop bar, an adjusting column is connected in the screw hole in a threaded manner, and the draw hook is rotationally connected with the adjusting column.

Optionally, the hollow shaft is provided with two coaxially distributed limiting rings, and the friction pad is positioned between the two limiting rings.

Optionally, the friction pad is equipped with the guide pillar in the both sides that are perpendicular to axis, two the spacing ring is all offered in opposite one side and is supplied the guide pillar to insert and remove the annular, two the spacing ring is all offered in opposite one side and is radially extended to the spout of outer periphery, spout and annular intercommunication.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the elastic tension applied to the friction pad by the elastic telescopic component enables the friction pad to partially cover the hollow shaft, the hollow shaft is driven to rotate when the unreeling roller rotates, the rotating speed of the unreeling roller is limited by the friction force between the friction pad and the hollow shaft, and the unreeling roller keeps following rotation under the traction force of the woven bag, so that the woven bag keeps tensioned and straight, and the possibility of deflection and wrinkling of the woven bag is reduced;

2. the operator can choose the spring with different elastic coefficients to assemble according to the traction speed, or adjust the distance between the drag hook and the pull ring by rotating the adjusting column, and change the stretched length of the spring, thereby controlling the friction force between the friction pad and the hollow shaft.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

FIG. 2 is a schematic diagram of an embodiment of the present application for embodying a friction pad.

Fig. 3 is a schematic diagram of an embodiment of the present application for embodying a stop collar.

Fig. 4 is an enlarged view at a in fig. 2.

Fig. 5 is a schematic diagram of an embodiment of the present application for embodying an elastically stretchable component.

Reference numerals illustrate: 1. a base; 11. an empty shaft; 12. locking the screw rod; 13. a friction pad; 2. an elastic expansion assembly; 21. a sleeve; 22. a loop bar; 23. a spring; 24. a drag hook; 25. a pull ring; 26. a cushion block; 27. a slot; 28. countersunk head screws; 3. a screw hole; 31. an adjusting column; 4. a limiting ring; 41. a guide post; 42. a ring groove; 421. and a sliding groove.

Detailed Description

The utility model will be described in further detail with reference to fig. 1-5 and the detailed description of the preferred embodiments.

In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present utility model. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.

The embodiment of the application discloses a tension adjusting device for transmission of a woven bag printing machine. As shown in fig. 1, the tension adjusting device comprises a base 1, an empty shaft 11 is rotatably connected to the base 1, the empty shaft 11 is used for being sleeved at the end part of the unreeling roller and is coaxially distributed with the unreeling roller, a plurality of locking screws 12 propped against the unreeling roller are connected to the empty shaft 11 in a threaded manner, the locking screws 12 are circumferentially and equidistantly arranged around the axis of the empty shaft 11, and the empty shaft 11 is driven to rotate when the unreeling roller rotates.

As shown in fig. 2, an arc-shaped friction pad 13 is arranged on the hollow shaft 11, two elastic telescopic components 2 symmetrically distributed about the axis of the hollow shaft 11 are arranged on the base 1, the two elastic telescopic components 2 are respectively connected with two ends of the friction pad 13, and the friction pad 13 applies pressure to the hollow shaft 11 under the driving of the two elastic telescopic components 2.

As shown in fig. 3, the hollow shaft 11 is provided with two coaxially distributed limiting rings 4, the friction pad 13 is located between the two limiting rings 4, the two sides of the friction pad 13 perpendicular to the axis are provided with guide posts 41, the two limiting rings 4 are provided with annular grooves 42 for the guide posts 41 to insert and move on opposite sides, the two limiting rings 4 are provided with sliding grooves 421 extending to the outer circumferential surface along the radial direction on opposite sides, and the sliding grooves 421 are communicated with the annular grooves 42.

In the rotation process of the hollow shaft 11, the two limiting rings 4 limit the axial displacement of the friction pad 13, meanwhile, the guide posts 41 move relatively along the annular grooves 42, the radial displacement of the friction pad 13 is limited, the relative position of the friction pad 13 is stabilized, and in addition, when the friction pad 13 needs to be disassembled, an operator can remove the friction pad 13 by moving the guide posts 41 into the sliding grooves 421, so that the device is convenient and quick.

As shown in fig. 4 and 5, the elastic telescopic assembly 2 comprises a sleeve 21, a sleeve rod 22 and a spring 23, wherein the sleeve 21 is hinged on the base 1, the sleeve rod 22 is partially and slidably inserted into the sleeve 21, the spring 23 is arranged in the sleeve 21, two ends of the spring 23 are respectively connected with cushion blocks 26, one cushion block 26 corresponds to the inner bottom of the sleeve 21, the other cushion block 26 corresponds to the sleeve rod 22, slots 27 for inserting the cushion blocks 26 are respectively formed in the inner bottom of the sleeve 21 and the end part of the sleeve rod 22, the sleeve 21 and the sleeve rod 22 are respectively connected with the corresponding cushion blocks 26 through countersunk screws 28, and an operator can realize the assembly and disassembly of the spring 23 through the countersunk screws 28.

As shown in fig. 5, one end of the sleeve rod 22, which is located outside the sleeve 21, is provided with a screw hole 3 extending along the length direction of the sleeve rod, an adjusting column 31 is connected in the screw hole 3 in a threaded manner, the adjusting column 31 extends out of the sleeve rod 22 and is rotatably connected with a draw hook 24, the rotation axis of the draw hook 24 is coaxial with the adjusting column 31, and the end part of the friction pad 13 is provided with a pull ring 25 buckled with the draw hook 24.

The spring 23 is stretched and generates elastic deformation, the loop bar 22 drives the draw hook 24 to draw the pull ring 25 under the action of elastic tension of the spring 23, so that the friction pad 13 is tightly pressed on the hollow shaft 11, when the woven bag roll is driven to rotate by traction, the hollow shaft 11 is driven to rotate by the unwinding roller, and due to friction between the friction pad 13 and the hollow shaft 11, the autonomous rotation of the unwinding roller under the action of inertia is limited, so that the unwinding speed and the traction speed of the unwinding roller are kept all the time, the woven bag is kept to be tensioned and straight, and the possibility of deviation and wrinkling of the woven bag is reduced.

The operator can change the elastic tension of the stretched spring 23 by changing the spring 23 or rotating the adjusting column 31 to adjust the relative distance between the drag hook 24 and the pull ring 25, so as to adjust the friction force between the friction pad 13 and the hollow shaft 11, and the unreeling roller can smoothly rotate.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as referred to in this application means that each exists alone or both.

As used herein, "connected" means either a direct connection between elements or an indirect connection between elements via other elements.

Claims (6)

1. The utility model provides a braided bag printing machine transmission is with tension adjusting device which characterized in that: the automatic unreeling device comprises a base (1), wherein an empty shaft (11) is rotatably connected to the base (1), the empty shaft (11) is used for being sleeved at the end part of an unreeling roller, and a plurality of locking screws (12) propped against the unreeling roller are connected to the empty shaft (11) in a threaded manner;

be equipped with curved friction pad (13) on hollow (11), base (1) are equipped with two and regard to hollow (11) axis symmetric distribution's elastic expansion subassembly (2), two elastic expansion subassembly (2) are connected with the both ends of friction pad (13) respectively, friction pad (13) are exerted pressure effect to hollow (11) under the drive of two elastic expansion subassemblies (2).

2. The tension adjusting device for transmission of a woven bag printer according to claim 1, wherein: the elastic telescopic component (2) comprises a sleeve (21) and a loop bar (22), the sleeve (21) is hinged to the base (1), the loop bar (22) is partially slidably inserted into the sleeve (21), one end of the loop bar (22) located in the sleeve (21) is connected with the inner bottom of the sleeve (21) through a spring (23), one end of the loop bar (22) located outside the sleeve (21) is connected with a draw hook (24), and the end part of the friction pad (13) is provided with a pull ring (25) buckled with the draw hook (24).

3. The tension adjusting device for transmission of a woven bag printer according to claim 2, wherein: two ends of the spring (23) are connected with cushion blocks (26), one cushion block (26) corresponds to the inner bottom of the sleeve (21), the other cushion block (26) corresponds to the loop bar (22), slots (27) for inserting the cushion blocks (26) are formed in the inner bottom of the sleeve (21) and the end parts of the loop bar (22), and the sleeve (21) and the loop bar (22) are connected with the corresponding cushion blocks (26) through countersunk head screws (28).

4. A woven bag printer transmission tension adjusting apparatus as defined in claim 3, wherein: the sleeve rod (22) is provided with a screw hole (3) extending along the length direction of the sleeve rod, an adjusting column (31) is connected with the screw hole (3) in a threaded mode, and the draw hook (24) is connected with the adjusting column (31) in a rotating mode.

5. The tension adjusting device for transmission of a woven bag printer according to claim 1, wherein: the hollow shaft (11) is provided with two coaxially distributed limiting rings (4), and the friction pad (13) is positioned between the two limiting rings (4).

6. The tension adjusting device for transmission of a woven bag printer according to claim 5, wherein: the friction pad (13) is provided with guide posts (41) on two sides perpendicular to the axis, two limiting rings (4) are provided with annular grooves (42) for the guide posts (41) to insert and move on the opposite sides, two limiting rings (4) are provided with sliding grooves (421) extending to the outer circumferential surface along the radial direction on the opposite sides, and the sliding grooves (421) are communicated with the annular grooves (42).