CN219507217U

CN219507217U - Roll paper tray

Info

Publication number: CN219507217U
Application number: CN202320266938.2U
Authority: CN
Inventors: 李江林
Original assignee: Shenzhen Jingwei Line Technology Co ltd
Current assignee: Shenzhen Jingwei Line Technology Co ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-08-11
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to a roll paper tray, which comprises a winding drum, a supporting shell and a roller, wherein film paper is arranged around the winding drum; the support shell is provided with an arc-shaped curved surface, the curvature of the arc-shaped curved surface is smaller than that of the cylindrical surface of the winding drum, and the arc-shaped curved surface is symmetrically provided with at least two notches along the radial direction; the rollers are embedded into each notch and rotate relative to the supporting shell, wherein the tangential planes of the two rollers are tangential to the winding drum, so that the winding drum rotates around the axis of the winding drum relative to the supporting shell to output film paper. According to the roll paper tray, the arc-shaped curved surface is arranged on the supporting shell, at least two notches are symmetrically arranged on the arc-shaped curved surface along the radial direction, and the rollers rotate relative to the supporting shell in the notches, so that when the two rollers which are in tangential contact with the roll drum roll, the roll drum can rotate around the axis of the roll drum, and further, film paper encircling the roll drum can be stably output.

Description

Roll paper tray

Technical Field

The utility model relates to the technical field of plastic film manufacturing, in particular to a roll paper tray.

Background

In the prior art, a plastic film generally uses a winding drum to rotate a roll paper in a supporting manner, but under the condition, uneven stress exists in the roll paper rotating process, so that uneven roll paper rotating speed relative to the winding drum causes uneven roll paper output speed, and uneven speed is easily caused when the plastic film is cut in a control length, so that the technical problem of uneven speed when the plastic film is output to film paper is needed to be solved.

Disclosure of Invention

The utility model aims to provide a roll paper tray and aims to solve the technical problem of uneven speed of plastic film when the plastic film is discharged.

In order to solve the technical problems, the roll paper tray comprises a roll, a supporting shell and rollers, wherein film paper is arranged around the roll; the supporting shell is provided with an arc-shaped curved surface, the curvature of the arc-shaped curved surface is smaller than that of the cylindrical surface of the winding drum, and the arc-shaped curved surface is symmetrically provided with at least two notches along the radial direction; the rollers are embedded into each notch and rotate relative to the supporting shell, wherein the tangential planes of the two rollers are tangential to the winding drum, so that the winding drum rotates around the axis of the winding drum relative to the supporting shell to output film paper.

Further, the support shell comprises a first rotating hole and a first shrinkage hole, the first rotating hole penetrates through one side of the notch, and the first shrinkage hole is communicated with the first rotating hole and extends along the radial direction away from the first rotating hole;

the support shell further comprises a second rotating hole and a second shrinkage hole communicated with the second rotating hole, the second rotating hole is coaxial with the first rotating hole, the second rotating hole penetrates through the other side of the notch, and the roller rotates relative to the first rotating hole and the second rotating hole.

Further, the diameter of the first rotating hole is larger than that of the second rotating hole, so that the roller is preset to be assembled in the first rotating hole and the second rotating hole.

Further, a first rotating shaft and a second rotating shaft are respectively arranged on two sides of the axis of the roller in a protruding mode, the first rotating shaft is adapted to the first rotating hole to be connected in a rotating mode, and the second rotating shaft is adapted to the second rotating hole to be connected in a rotating mode.

Further, the roller at one side of the first rotating shaft is provided with an annular cavity, and reinforcing ribs are arranged in the annular cavity so that the roller is formed by injection molding.

Further, the support case located at one side of the first rotation hole is extended with a groove to injection mold the support case.

Further, at least two notches are formed in the arc-shaped curved surface at intervals along the axial direction, and the rollers are respectively embedded into the notches and used for supporting the winding drum.

Further, the supporting shell comprises a supporting foot part and a supporting part, one side surface of the supporting part is the arc-shaped curved surface, the two supporting foot parts are respectively connected to two ends of the supporting part, and the supporting foot parts outwards extend from one end of the supporting part away from the arc-shaped curved surface and are used for supporting the supporting part.

Further, the leg portion and the receiving portion are in fillet transition connection.

The implementation of the embodiment of the utility model has the following beneficial effects:

the stock form tray in this embodiment is equipped with the arc curved surface on the supporting shell, and the arc curved surface is equipped with two at least notches along radial symmetry, and the gyro wheel rotates relative supporting shell in the notch to when two gyro wheels of tangent butt of reel take place to roll, the reel can rotate around self axle center, and then exports the film paper that encircles on the reel steadily, overcomes among the prior art plastic film output film paper be the inhomogeneous technical problem of speed.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a roll paper tray according to an embodiment of the present utility model;

fig. 2 is an exploded view of a roll paper tray according to an embodiment of the present utility model;

FIG. 3 is a top view of a support shell according to an embodiment of the present utility model;

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

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is a schematic view of a roller according to an embodiment of the present utility model;

FIG. 7 is a front view of a roller in accordance with an embodiment of the present utility model;

fig. 8 is a bottom view of a support housing according to an embodiment of the present utility model.

Wherein: 100. a roll paper tray; 110. a reel; 120. a support case; 121. an arc-shaped curved surface; 1211. a notch; 122. a first rotating hole; 123. a first shrinkage cavity; 124. a second rotary hole; 125. a second shrinkage cavity; 126. a groove; 127. a leg portion; 128. a receiving part; 130. a roller; 131. a first rotating shaft; 132. a second rotating shaft; 133. an annular cavity; 134. reinforcing ribs.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-8, an embodiment of the present utility model provides a roll paper tray 100, which includes a roll 110, a support housing 120, and a roller 130, and a film paper is disposed around the roll 110; the support shell 120 is provided with an arc-shaped curved surface 121, the curvature of the arc-shaped curved surface 121 is smaller than that of the cylindrical surface of the winding drum 110, and the arc-shaped curved surface 121 is symmetrically provided with at least two notches 1211 along the radial direction; the rollers 130 are inserted into each notch 1211 to rotate relative to the support housing 120, wherein the tangential surfaces of the two rollers 130 are tangential to the roll 110, so that the roll 110 rotates about its own axis to output the film paper relative to the support housing 120. In a specific application, the curvature of the arc-shaped curved surface 121 of the supporting shell 120 needs to be smaller than the cylindrical surface of the winding drum 110, so that the winding drum 110 can be placed on the arc-shaped curved surface 121 of the supporting shell 120, in order to enable the roller 130 to be stably attached to the winding drum 110, the winding drum 110 needs to be tangent to the surface of the roller 130, the roller 130 is tightly attached to the winding drum 110 when rotating, so that the winding drum 110 is driven to rotate under the action of a static friction force, in order to prevent the winding drum 110 from leaving the arc-shaped curved surface 121, the notch 1211 for installing the roller 130 is symmetrically arranged on two sides of the arc-shaped curved surface 121, so that the winding drum 110 rotates around the axis of the winding drum relative to the supporting shell 120, and therefore, when die paper is output, the die paper can be smoothly rolled out.

In one possible embodiment, the support case 120 includes a first rotation hole 122 and a first shrinkage hole 123, the first rotation hole 122 being provided through one side of the slot 1211, the first shrinkage hole 123 being in communication with the first rotation hole 122 and extending in a radial direction away from the first rotation hole 122; the support case 120 further includes a second rotation hole 124 and a second shrinkage hole 125 communicating with the second rotation hole 124, the second rotation hole 124 is coaxial with the first rotation hole 122, and the second rotation hole 124 is disposed through the other side of the slot 1211, and the roller 130 rotates relative to the first rotation hole 122 and the second rotation hole 124. In particular applications, in order to facilitate the roller 130 being mounted in the first rotating hole 122 and the second rotating hole 124 of the supporting shell 120, the first rotating hole 122 is respectively communicated with the first shrinkage hole 123, the second rotating hole 124 is respectively communicated with the second shrinkage hole 125, wherein the first shrinkage hole 123 and the second shrinkage hole 125 are both bar-shaped slotted holes, when the width of the bar-shaped slotted holes becomes larger, the roller 130 is conveniently mounted in the first rotating hole 122 and the second rotating hole 124, and when the width of the bar-shaped slotted holes becomes smaller, the roller 130 can be accidentally separated from the first rotating hole 122 and the second rotating hole 124, so that the reliability of the roller 130 rotating relative to the first rotating hole 122 and the second rotating hole 124 is improved.

In one possible embodiment, the first pivot hole 122 has a larger diameter than the second pivot hole 124 such that the roller 130 is pre-assembled to the first pivot hole 122 and the second pivot hole 124. In a specific application, in order to prevent the roller 130 from being reversely mounted in the first rotating hole 122 and the second rotating hole 124 to affect the smoothness of the rotation of the roller 130 relative to the support shell 120, the diameter of the first rotating hole 122 is larger than that of the second rotating hole 124, so as to ensure that the roller 130 is preset to be assembled in the first rotating hole 122 and the second rotating hole 124, and thus the assembly of the roller 130 relative to the first rotating hole 122 and the second rotating hole 124 plays a role in fool-proofing and error correction.

In one possible embodiment, two sides of the axle center of the roller 130 are respectively provided with a first rotating shaft 131 and a second rotating shaft 132 in a protruding mode, the first rotating shaft 131 is adapted to be in rotational connection with the first rotating hole 122, and the second rotating shaft 132 is adapted to be in rotational connection with the second rotating hole 124. In a specific application, the roller 130 and the first rotating hole 122 and the second rotating hole 124 are designed to form a foolproof effect, so the first rotating shafts 131 on two sides of the axle center of the roller 130 need to be adapted to be rotatably connected with the first rotating hole 122, and the second rotating shafts 132 need to be adapted to be rotatably connected with the second rotating hole 124, so as to prevent the roller 130 from being installed incorrectly.

In one possible embodiment, the roller 130 located at one side of the first rotation shaft 131 is formed with an annular cavity 133, and a reinforcing rib 134 is provided in the annular cavity 133 to injection-mold the roller 130. In particular, since the solid roller 130 is used for shrinking during injection molding, the shape and size of the shrunk roller 130 cannot meet the practical requirements, particularly, when the shrinkage deformation error of the two rollers 130 is large, the rotation of the spool 110 relative to the roller 130 is unstable, so that the roller 130 on the first rotating shaft 131 side preferably forms the annular cavity 133 to offset the shrinkage of the annular cavity 133, so as to meet the injection molding requirements of the roller 130.

In one possible embodiment, the support housing 120 on one side of the first rotation hole 122 is extended with a groove 126 to injection mold the support housing 120. In a specific application, due to the complex structure of the support shell 120, a certain space needs to be preset, so that the flow performance of the injection molding sol is good, in particular, better molding quality is required at the first rotating hole 122, and therefore, the support shell 120 on the side close to the first rotating hole 122 extends to form the groove 126, so that the injection molding requirement of the support shell 120 is met.

In one possible embodiment, the curved surface 121 is provided with at least two notches 1211 axially spaced, and the rollers 130 are respectively inserted into the notches 1211 for supporting the reel 110. In particular, in order to improve the rotation stability of the roller 130 and the drum 110, the roller 130 may be respectively embedded into the notches 1211 arranged at intervals, and four supporting rollers 130 are formed on the curved surface 121 to improve the rolling stability, and it is noted that the rollers 130 arranged at intervals along the axial direction of the curved surface 121 roll in a slightly inclined alignment with each other to prevent the drum 110 from being separated from the supporting shell 120 along the axial direction of the curved surface 121.

In one possible embodiment, the support shell 120 includes a supporting portion 127 and a receiving portion 128, one side surface of the receiving portion 128 is an arc-shaped curved surface 121, two supporting portions 127 are respectively connected to two ends of the receiving portion 128, and the supporting portions 127 extend outwards from one end of the receiving portion 128 away from the arc-shaped curved surface 121 for supporting the receiving portion 128. In a specific application, the bearing portion is used for contacting the roll 110 and the film paper surrounding the roll, and the leg portion 127 is splayed to be supported on an external plane for supporting the weight of the bearing portion, so that the risk of rollover of the supporting shell 120 can be avoided.

In one possible embodiment, a rounded transition is provided between the leg 127 and the receptacle 128. In particular applications, in order to prevent the connection between the leg portion 127 and the receiving portion 128 from being broken due to stress concentration, the connection between the leg portion 127 and the receiving portion 128 is connected by a fillet, which is worth to be explained, and the design of the fillet can also prevent the support shell 120 from scratching the operator and increase the aesthetic property of the product.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A roll paper tray, comprising:

a roll around which a film is provided;

the support shell is provided with an arc-shaped curved surface, the curvature of the arc-shaped curved surface is smaller than that of the cylindrical surface of the winding drum, and at least two notches are symmetrically arranged on the arc-shaped curved surface along the radial direction;

the rollers are embedded into each notch and rotate relative to the supporting shell, wherein the tangential planes of the two rollers are tangential to the winding drum, so that the winding drum rotates around the axis of the winding drum relative to the supporting shell to output film paper.

2. The roll paper tray according to claim 1, wherein the support case includes a first rotation hole penetrating one side of the notch and a first shrinkage hole communicating with the first rotation hole and extending in a radial direction away from the first rotation hole;

3. The roll paper tray according to claim 2, wherein the first pivot hole has a larger diameter than the second pivot hole so that the roller is preset to be fitted to the first pivot hole and the second pivot hole.

4. A roll paper tray according to claim 3, wherein a first rotating shaft and a second rotating shaft are respectively provided on two sides of the axis of the roller in a protruding manner, the first rotating shaft is adapted to the first rotating hole to be connected in a rotating manner, and the second rotating shaft is adapted to the second rotating hole to be connected in a rotating manner.

5. The roll paper tray according to claim 4, wherein the roller on the first rotation shaft side is formed with an annular cavity in which a reinforcing rib is provided to injection mold the roller.

6. The roll paper tray according to claim 5, wherein the support case on the side of the first rotation hole is extended with a groove to injection-mold the support case.

7. A roll paper pallet according to any one of claims 1 to 6, wherein the curved surface is provided with at least two notches at intervals in the axial direction, and the rollers are respectively inserted into the notches for supporting the roll.

8. The roll paper tray according to claim 7, wherein the supporting case includes a leg portion and a receiving portion, a side surface of the receiving portion is the curved surface, two leg portions are respectively connected to two ends of the receiving portion, and the leg portion extends outward from one end of the receiving portion away from the curved surface for supporting the receiving portion.

9. The roll paper tray according to claim 8, wherein the leg portion and the receiving portion are connected by a rounded transition.