CN217947249U - Axial-sliding expansion shaft structure - Google Patents

Abstract

The utility model discloses an expansion shaft structure capable of axially sliding, which relates to the technical field of food packaging equipment and comprises an expansion shaft and a bearing seat, wherein the expansion shaft comprises a film expansion cylinder and a mandrel partially sleeved in the film expansion cylinder; an axial movement anti-disengaging structure, an axial movement guiding structure and an axial movement wear-resistant component are arranged between the mandrel and the film rolling and expanding tightening barrel. The utility model divides the expansion shaft into a film expansion tightening barrel and a mandrel, the film expansion tightening barrel is used for coating a film roll, the mandrel is used for being connected with the equipment frame through a bearing seat, and the film expansion tightening barrel can move back and forth along the mandrel, so when the front and back axial positions of the film roll are adjusted, only the film expansion tightening barrel needs to move back and forth along the mandrel; the axial movement anti-disengaging structure can prevent the film expansion tightening barrel from slipping off the mandrel, and the axial movement guide structure can prevent the film expansion tightening barrel from radially shaking when moving back and forth; the axial movement wear-resistant assembly can reduce the abrasion loss of the mandrel and the film expansion tightening barrel during relative axial movement.

Description

Axial-sliding expansion shaft structure

Technical Field

The utility model relates to a food packaging equipment technical field particularly, relates to a but axial slip's axle structure that expands, is applicable to the film unwinding device among the food packaging equipment.

Background

For food packaging equipment, most of the existing film winding and unwinding devices have the advantages that one end is used for unwinding a film, the other end is used for winding the film, the film is placed at the film unwinding end and the film winding end by generally adopting an inflatable shaft or a mechanical inflatable shaft structure, and the tail end of the inflatable shaft is supported by a bearing. The film receiving end is used for rolling and releasing the film released by the film end by a film receiving expansion shaft connected with a motor, the film is generally directly sleeved on the outer surface of the expansion shaft by the film releasing end, and then the film is tensioned by inflating the air expansion shaft or screwing a handle on a mechanical expansion shaft, so that the film and the air expansion shaft are integrated.

In the use process of equipment, the relative position of a film in the axial direction needs to be adjusted sometimes, but at present, no matter the air-expanding shaft or the mechanical expanding shaft is adopted, the connection modes between the tail mounting bearing structure of most expanding shafts and the main film placing structure of the expanding shaft adopt fixed connection modes, such as mutual welding or screw fixed connection and the like, and the purpose is to enable the expanding shaft body and the tail mounting structure to form an integral structure, so that the axial position of the film on the expanding shaft cannot be adjusted conveniently. When the relative position of the film in the axial direction needs to be adjusted, the film is in a loose state after the air inflation shaft is deflated or the mechanical inflation shaft handle is rotated reversely, and the film in the axial position can be adjusted by pushing the film roll. When the adjustment is proper, the inflatable shaft needs to be inflated again or the mechanical shaft handle needs to be rotated again to enable the inflatable shaft and the thin film to be inflated tightly, so that the adjustment method is inconvenient to operate and time-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model provides a but axial slip's bloated axle construction, it can alleviate above-mentioned problem.

In order to alleviate the above-mentioned problem, the utility model discloses the technical scheme who takes as follows:

the utility model provides an axially slidable axle expansion structure, including the axle expansion and install in the bearing frame of axle expansion, the bearing frame suit in the axle expansion, and with be equipped with the bearing between the axle expansion, the axle expansion is provided with film book tensioning structure, the axle expansion includes the tight section of thick bamboo of film book expansion that is used for the overcoat film book, and from back to front, partly overlaps in the dabber in the tight section of thick bamboo of film book expansion, film book tensioning structure install in the tight section of thick bamboo of film book expansion, bearing frame and bearing install in the dabber, the tight section of thick bamboo of film book expansion can be followed the axial of dabber and moved; an axial movement anti-disengaging structure and an axial movement guiding structure are arranged between the mandrel and the film rolling and tensioning cylinder, the axial movement anti-disengaging structure is used for preventing the film rolling and tensioning cylinder from slipping off from the mandrel, and the axial movement guiding structure is used for guiding the film rolling and tensioning cylinder to move back and forth along the mandrel; the axial movement wear-resistant assembly is detachably arranged between the mandrel and the film rolling and expanding tight cylinder and is used for reducing the abrasion loss when the mandrel and the film rolling and expanding tight cylinder move axially relative to each other.

The utility model discloses an in a preferred embodiment, axial displacement anti-disengaging structure is including seting up in the spacing hole of the tight section of thick bamboo wall of film book inflation, can dismantle fixed connection in the dabber extends the locating part in spacing hole works as the locating part is located during the central point in spacing hole, the locating part with between the preceding back wall in spacing hole, all leave the confession the clearance of locating part back-and-forth movement.

In a preferred embodiment of the present invention, the core shaft has a fastening hole, and the lower end of the locating part is sunk into the fastening hole and is fixed by screws.

In a preferred embodiment of the present invention, the axial movement guiding structure includes an axial movement guiding rod fixed to the central position of the film rolling and expanding tightening barrel, an axial movement guiding hole provided at the front end of the mandrel, and the axial movement guiding rod is axially slidably assembled to the axial movement guiding hole.

In a preferred embodiment of the present invention, the front end of the film expansion cylinder is detachably fixed with a handle.

The utility model discloses a in a preferred embodiment, the wear-resisting subassembly of axial displacement includes that two are located respectively the wear-resisting cover of axial displacement anti-disengaging structure front and back side, the inner wall sliding fit of wear-resisting cover in the outer wall of dabber, the outer wall interference fit of wear-resisting cover in the inner wall of the tight section of thick bamboo of film book inflation.

The utility model discloses an in a preferred embodiment, the dabber includes big footpath section, well footpath section and path section that distribute in proper order after to by preceding, bearing frame and bearing install in well footpath section, the tight section of thick bamboo that expands is rolled up to the film slide cup joint in big footpath section.

Compared with the prior art, the beneficial effects of the utility model are that:

1) The expansion shaft is divided into a film rolling expansion cylinder and a mandrel, the film rolling expansion cylinder is used for externally coating a film roll, the mandrel is used for being connected with the equipment frame through a bearing seat, and the film rolling expansion cylinder can move back and forth along the mandrel, so that when the front axial position and the rear axial position of the film roll are adjusted, the film roll does not need to be pushed, and only the film rolling expansion cylinder needs to move back and forth along the mandrel, the link of adjusting the front position and the rear position of the film roll is greatly simplified, the labor intensity is low, the operation is very convenient, the time is saved, the efficiency is improved, and the operation is more humanized;

2) The axial movement anti-disengaging structure can prevent the film expansion tightening barrel from slipping off the mandrel, the axial movement guide structure can guide the film expansion tightening barrel to move back and forth along the mandrel, radial shaking is avoided, and the relative radial stability of the film expansion tightening barrel and the mandrel is ensured;

3) The axial moving wear-resistant component can reduce the abrasion loss of the mandrel and the film expansion tightening barrel during relative axial movement, prolong the service life, and can be detached and replaced by a new axial moving wear-resistant component when the axial moving wear-resistant component is excessively abraded.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an expansion shaft structure according to an embodiment of the present invention;

fig. 2 is a partial sectional view of the expansion shaft structure according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural view of the mandrel according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of the film roll-up drum according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the position limiting member according to the embodiment of the present invention;

fig. 7 is a schematic structural view of the wear-resistant sleeve in the embodiment of the present invention;

in the figure: the method comprises the following steps of 1-a film roll expansion tightening barrel, 2-a bearing seat, 3-a mandrel, 31-a large-diameter section, 32-a middle-diameter section, 33-a small-diameter section, 4-a handle, 5-an axial movement anti-falling structure, 51-a limiting hole, 52-a limiting part, 53-a screw, 54-a clamping hole, 6-a bearing, 7-a wear-resistant sleeve, 8-an axial movement guide hole, 9-an axial movement guide rod and 10-a film roll tensioning structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Examples

Referring to fig. 1 to 7, the embodiment provides an axially slidable expansion shaft structure, which includes an expansion shaft and a bearing seat 2 mounted on the expansion shaft, the bearing seat 2 is sleeved on the expansion shaft, and a bearing 6 is mounted between the expansion shaft and the bearing seat, the expansion shaft is provided with a film roll tensioning structure, and the film roll tensioning structure is a structure mounted on the expansion shaft in the prior art, and therefore is not labeled in the drawings.

The axle that expands is including the tight section of thick bamboo 1 of film book expansion that is used for the overcoat film to and by back to preceding, the partial dabber 3 of overlapping in the tight section of thick bamboo 1 of film book expansion, and the tight structure of film book installs in the tight section of thick bamboo 1 of film book expansion, and tight section of thick bamboo and dabber 3 adopt sliding fit's mode to assemble, rather than prior art's rigid fixation mode. The bearing seat 2 and the bearing are arranged on the mandrel 3, and the film expansion tightening barrel 1 can move axially along the mandrel 3; an axial movement anti-disengaging structure 5 and an axial movement guiding structure are arranged between the mandrel 3 and the film rolling and expanding tube 1, the axial movement anti-disengaging structure 5 is used for preventing the film rolling and expanding tube 1 from slipping off the mandrel 3, and the axial movement guiding structure is used for guiding the film rolling and expanding tube 1 to move back and forth along the mandrel 3; an axial movement wear-resistant component is detachably arranged between the mandrel 3 and the film expansion tightening barrel 1 and is used for reducing the abrasion loss when the mandrel 3 and the film expansion tightening barrel 1 move axially relatively.

In this embodiment, the mandrel 3 comprises a large diameter section 31, a middle diameter section 32 and a small diameter section 33 which are sequentially distributed from front to back, in order to mount the expansion shaft on the frame of the packaging equipment, the bearing seat 2 and the bearing are mounted on the middle diameter section 32, and the film expansion tightening barrel 1 is slidably sleeved on the large diameter section 31, as shown in fig. 2 and 4. The bearing seat 2 is provided with a flange so as to fix the bearing seat 2 and a frame of the packaging equipment through screws, namely, the installation of the whole expanding shaft structure is realized.

In this embodiment, the axial movement anti-disengaging structure 5 includes a limiting hole 51 opened in the wall of the film rolling tightening cylinder 1, and a limiting member 52 detachably and fixedly connected to the mandrel 3 and extending to the limiting hole 51, and when the limiting member 52 is located at the center of the limiting hole 51, a moving gap for the limiting member 52 to move back and forth is left between the limiting member 52 and the front and rear walls of the limiting hole 51. The mandrel 3 is provided with a clamping hole 54, in the embodiment, the clamping hole 54 is located on the large-diameter section 31 of the mandrel 3, and the lower end of the limiting member 52 sinks into the clamping hole 54 and is fixed by the screw 53.

In this embodiment, the axial movement guiding structure includes an axial movement guiding rod 9 fixed at the central position of the film expansion tightening barrel 1, and an axial movement guiding hole 8 opened at the front end of the mandrel 3, and the axial movement guiding rod 9 is axially slidably assembled in the axial movement guiding hole 8.

In this embodiment, a handle 4 is detachably fixed to the front end of the film expansion cylinder 1.

In this embodiment, the axially movable wear-resistant assembly comprises two wear-resistant sleeves 7 respectively located at the front and rear sides of the axially movable anti-disengaging structure 5, the inner walls of the wear-resistant sleeves 7 are in sliding fit with the outer wall of the mandrel 3, and the outer walls of the wear-resistant sleeves 7 are in interference fit with the inner wall of the film rolling and expanding cylinder 1.

The wear-resistant sleeve 7 can be a metal bushing or a high-strength wear-resistant engineering plastic sleeve, and the sliding matching surface of the mandrel 3 corresponding to the wear-resistant sleeve 7 needs to adopt heat treatment and other processes, so that the hardness is increased, and the wear resistance is improved.

But axial sliding's axle structure of expanding described in this embodiment can be applicable to multiple axle forms of expanding such as mechanical axle expanding and physiosis axle, consequently no longer distinguishes whether mechanical axle expanding or physiosis axle. The working principle of the expansion shaft structure is as follows:

1) Placing the film roll on the expansion cylinder;

2) Tensioning the film roll tensioning structure to enable the paper tube on the inner side of the film roll to be tightly pushed and integrated with the expansion tube;

3) If the front and rear axial positions of the film roll need to be adjusted, the handle 4 is directly pulled forwards or pushed backwards, so that the expansion cylinder moves forwards or backwards in the axial direction until the expansion cylinder is adjusted to a proper position. The adjustment is an axial movement of the expansion cylinder rather than the film roll, so that no operation for releasing the film roll tensioning arrangement is required. Generally speaking, in order to accurately position the relative position of the film roll on the expansion shaft, the method can be realized by matching with other auxiliary structures, and as the invention is mainly directed to the expansion shaft sliding structure per se, other auxiliary structures are not discussed.

The process of adjusting the relative position of the film on the expansion shaft is completed once.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. An axially slidable expansion shaft structure comprises an expansion shaft and a bearing seat arranged on the expansion shaft, wherein the bearing seat is sleeved on the expansion shaft, a bearing is assembled between the bearing seat and the expansion shaft, and the expansion shaft is provided with a film roll tensioning structure; an axial movement anti-disengaging structure and an axial movement guiding structure are arranged between the mandrel and the film rolling and tensioning cylinder, the axial movement anti-disengaging structure is used for preventing the film rolling and tensioning cylinder from slipping off from the mandrel, and the axial movement guiding structure is used for guiding the film rolling and tensioning cylinder to move back and forth along the mandrel; the axial movement wear-resistant assembly is detachably arranged between the mandrel and the film rolling and expanding tight cylinder and is used for reducing the abrasion loss when the mandrel and the film rolling and expanding tight cylinder move axially relative to each other.

2. The axial sliding expansion shaft structure of claim 1, wherein the axial movement anti-separation structure comprises a limiting hole opened in the wall of the film rolling and tightening cylinder, and a limiting member detachably and fixedly connected to the mandrel and extending to the limiting hole, and when the limiting member is located at the center of the limiting hole, a movable gap for the limiting member to move back and forth is left between the limiting member and the front and rear walls of the limiting hole.

3. The axially slidable expansion shaft structure according to claim 2, wherein the mandrel is provided with a locking hole, and a lower end of the limiting member is sunk into the locking hole and fixed by a screw.

4. The axially slidable shaft expansion structure of claim 3, wherein said axial movement guide structure comprises an axial movement guide rod fixed to a central position of said film expansion mandrel, and an axial movement guide hole opened at a front end of said mandrel, said axial movement guide rod being axially slidably fitted in said axial movement guide hole.

5. The axially slidable axle expansion structure of claim 4, wherein a handle is detachably fixed to the front end of said film expansion sleeve.

6. The axially slidable axle expanding structure of claim 5, wherein said axially movable wear assembly comprises two wear sleeves respectively located at the front and rear sides of said axially movable anti-slip structure, the inner wall of said wear sleeve is slidably fitted to the outer wall of said mandrel, and the outer wall of said wear sleeve is interference fitted to the inner wall of said film roll-up drum.

7. The axially slidable expansion shaft structure according to claim 6, wherein the mandrel comprises a large-diameter section, a medium-diameter section and a small-diameter section which are sequentially distributed from front to back, the bearing seat and the bearing are mounted on the medium-diameter section, and the film roll expansion cylinder is slidably sleeved on the large-diameter section.

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