阅读说明：本技术 一种自动换纸机构及材料成型压机 (Automatic paper changing mechanism and material forming press ) 是由 刘杰 于 2021-09-14 设计创作，主要内容包括：本申请涉及材料成型压机的技术领域,尤其是涉及一种自动换纸机构及材料成型压机,其中,自动换纸机构包括放卷组件,所述放卷组件包括第一固定架、设置于所述第一固定架上用于放置滤纸卷的固定杆以及设置于所述第一固定架上用于放出滤纸的第一动力件；以及,收卷组件,所述收卷组件包括第二固定架、设置于所述第二固定架上用于卷绕滤纸的收卷辊以及设置于所述第二固定架上用于驱动所述收卷辊转动的第二动力件,本申请实现了更换滤纸过程的自动化,提高了更换滤纸的便捷性,降低了工作人员的劳动强度,有利于保证工作效率,同时,本申请能够实现滤纸卷的连续使用,大大提高了滤纸的使用率,有利于降低生产成本。(The application relates to the technical field of material forming presses, in particular to an automatic paper changing mechanism and a material forming press, wherein the automatic paper changing mechanism comprises an unreeling assembly, the unreeling assembly comprises a first fixing frame, a fixing rod arranged on the first fixing frame and used for placing a filter paper roll and a first power part arranged on the first fixing frame and used for releasing filter paper; and, the rolling subassembly include the second mount, set up in be used for on the second mount to convolute the wind-up roll of filter paper and set up in be used for the drive on the second mount wind-up roll pivoted second power spare, this application has realized the automation of changing the filter paper process, has improved the convenience of changing filter paper, has reduced staff's intensity of labour, is favorable to guaranteeing work efficiency, and simultaneously, this application can realize the continuous use of filter paper roll, has improved the rate of utilization of filter paper greatly, is favorable to reducing manufacturing cost.)

1. The utility model provides an automatic paper mechanism trades for realize the automation of filter paper change process on the material forming press, its characterized in that, automatic paper mechanism trades includes:

the unwinding assembly comprises a first fixing frame, a fixing rod and a first power part, wherein the fixing rod is arranged on the first fixing frame and used for placing a filter paper roll, and the first power part is arranged on the first fixing frame and used for releasing filter paper;

the winding assembly comprises a second fixing frame, a winding roller and a second power part, the winding assembly is arranged on the second fixing frame and used for winding filter paper, and the second power part is arranged on the second fixing frame and used for driving the winding roller to rotate.

2. The automatic paper changing mechanism according to claim 1, wherein: the first power part comprises a power roller, a compression roller and a first driving motor which are arranged on the first fixed frame, the power roller is rotatably arranged on the first fixing frame and is positioned below the fixing rod, the axial direction of the power roller is consistent with the axial direction of the fixing rod, the axial direction of the compression roller is consistent with the axial direction of the power roller, one end of the power roller is coaxially and fixedly connected with the output shaft of the first driving motor, the compression roller is arranged on one side of the power roller through two swinging blocks which are rotatably arranged on the first fixed frame, the pressure roller and the power roller are arranged at intervals, the swinging block is rotatably arranged on two opposite sides of the first fixing frame along the axial direction of the pressure roller, one end of the swinging block is rotatably arranged at a preset position on the first fixing frame, and the other end of the swinging block is fixed with the end part of the pressing roller.

3. The automatic paper changing mechanism according to claim 2, wherein: the first fixing frame is provided with a first arc-shaped groove used for installing the pressing roller, and the circle center of a whole circle corresponding to the first arc-shaped groove is consistent with the rotation center of the swinging block on the first fixing frame.

4. The automatic paper changing mechanism according to claim 1, wherein: the unreeling component further comprises a first positioning rod used for positioning the filter paper, and the first positioning rod is arranged on the first fixing frame through two connecting strips and located below the fixing rod.

5. The automatic paper changing mechanism according to claim 4, wherein: the connecting strip comprises a first connecting strip and a second connecting strip, one end of the first connecting strip is arranged on the first fixing frame, the second connecting strip is arranged at one end, far away from the first fixing frame, of the first connecting strip, a plurality of connecting holes are formed in the first connecting strip and the second connecting strip, the second connecting strip is fixed to different positions on the first connecting strip through screws, and two ends of the first positioning rod are respectively fixed to correspond to the end portions, far away from the first fixing frame, of the second connecting strip.

6. The automatic paper changing mechanism according to claim 5, wherein: one end of the first connecting strip is mounted on the first fixing frame through a screw, and a second arc-shaped groove used for being matched with the screw to limit the first connecting strip is formed in the first fixing frame.

7. The automatic paper changing mechanism according to claim 1, wherein: the winding assembly further comprises a second positioning rod used for positioning the filter paper, and the second positioning rod is arranged on the second fixing frame and located below the winding roller.

8. The automatic paper changing mechanism according to claim 7, wherein: be provided with the determine module on the second mount, the determine module includes registration roller, swing strip, swing roller and position sensor, the registration roller set up in on the second mount, the registration roller is located second locating lever top just is located wind-up roll below, swing strip rotate set up in the both ends of registration roller, the both ends of swing roller are fixed in respectively and correspond on the swing strip, the axial direction of swing roller with the axial direction of registration roller is unanimous mutually, position sensor is used for detecting swing strip position, position sensor respectively with first power spare, second power spare electric connection.

9. The automatic paper changing mechanism according to claim 1, wherein: the fixing device is characterized in that a limiting assembly is arranged on the first fixing frame and comprises a supporting rod and two limiting strips, the supporting rod is arranged along the extending direction of the fixing rod, the height of the axis of the supporting rod is lower than that of the axis of the fixing rod, the two limiting strips are arranged on the supporting rod along the axial direction of the supporting rod at intervals, and the extending direction of the limiting strips is perpendicular to the axial direction of the supporting rod.

10. A material forming press, characterized in that the material forming press is provided with an automatic paper change mechanism according to any one of claims 1-9.

Technical Field

The application relates to the technical field of material forming presses, in particular to an automatic paper changing mechanism and a material forming press.

Background

The magnetic material compression molding process is generally classified into a wet-pressing method and a dry-pressing method, wherein the process of compression molding by the wet-pressing method generally comprises the following steps: filling the raw material into a mold on a wet press, pressing an upper mold and a lower mold, pressing the raw material, then opening the mold, and taking out the molded blank.

In the process of pressing the liquid raw material by pressing the upper mold and the lower mold, liquid such as water in the slurry overflows from the mold, and in order to prevent the liquid from remaining on the mold and causing secondary pollution to the blank in the mold, the liquid is usually required to be treated. The existing treatment mode is that water-absorbing filter paper is usually laid between an upper die and a lower die manually, when the upper die and the lower die are closed, overflowed liquid is absorbed through the water-absorbing filter paper, and the water-absorbing filter paper needs to be replaced after an embryo is taken out after the die is opened.

Among the above-mentioned relevant technical scheme, need the staff to pay close attention to the behavior of press often, and change to the absorbent filter paper, greatly increased staff's working strength, be unfavorable for guaranteeing production efficiency, and simultaneously, in order to guarantee the effect of absorbing water, the width and the length that need guarantee the sola filter paper all are greater than the mould surface area, but still mainly only have used the mid portion of filter paper, the marginal portion that is greater than the mould is not used and has just been changed, be unfavorable for guaranteeing the rate of utilization of filter paper. For this, further improvements are awaited.

Disclosure of Invention

In order to improve the change convenience of absorbent filter paper in order to reduce staff's intensity of labour, improve the rate of utilization of filter paper simultaneously, this application provides an automatic paper mechanism and material forming press trade.

In a first aspect, the application provides an automatic paper changing mechanism, which adopts the following technical scheme:

an automatic paper changing mechanism for realizing the automation of a filter paper changing process on a material forming press, the automatic paper changing mechanism comprises: the unwinding assembly comprises a first fixing frame, a fixing rod and a first power part, wherein the fixing rod is arranged on the first fixing frame and used for placing a filter paper roll, and the first power part is arranged on the first fixing frame and used for releasing filter paper; and the winding assembly comprises a second fixing frame, a winding roller and a second power part, the winding roller is arranged on the second fixing frame and used for winding filter paper, and the second power part is arranged on the second fixing frame and used for driving the winding roller to rotate.

Through adopting above-mentioned technical scheme, under the combined action of unreeling subassembly and rolling-up component, realized the automation of changing the filter paper process, improved the convenience of changing filter paper, greatly reduced staff's intensity of labour, be favorable to guaranteeing work efficiency, simultaneously, through the mating reaction of unreeling subassembly and rolling-up component, realize the incessant use in succession of filter paper roll, be favorable to guaranteeing the rate of utilization of filter paper, be favorable to reduceing manufacturing cost.

Optionally, the first power component includes a power roller, a pressure roller and a first driving motor, the power roller is rotatably mounted on the first fixing frame and located below the fixing rod, an axial direction of the power roller is consistent with an axial direction of the fixing rod, an axial direction of the pressure roller is consistent with an axial direction of the power roller, one end of the power roller is coaxially and fixedly connected with an output shaft of the first driving motor, the pressure roller is disposed on one side of the power roller through two swinging blocks rotatably mounted on the first fixing frame, the pressure roller and the power roller are spaced, the swinging blocks are rotatably mounted on two opposite sides of the first fixing frame along the axial direction of the pressure roller, one end of the swinging block is rotatably mounted at a predetermined position on the first fixing frame, the other end of the swinging block is fixed with the end part of the press roller.

Optionally, a first arc-shaped groove for mounting the pressing roller is formed in the first fixing frame, and a circle center of a full circle corresponding to the first arc-shaped groove is consistent with a rotation center of the swinging block on the first fixing frame.

Optionally, the unreeling assembly further comprises a first positioning rod for positioning the filter paper, and the first positioning rod is arranged on the first fixing frame through two connecting strips and is located below the fixing rod.

Optionally, the connecting strip includes first connecting strip and second connecting strip, the one end of first connecting strip set up in on the first mount, the second connecting strip sets up in first connecting strip and keeps away from the one end of first mount, a plurality of connecting holes have all been seted up on first connecting strip and the second connecting strip, the second connecting strip passes through the screw fixation in different positions on the first connecting strip, the both ends of first locating lever are fixed respectively corresponding to the tip that first mount was kept away from to the second connecting strip.

Optionally, one end of the first connecting bar is mounted on the first fixing frame through a screw, and a second arc-shaped groove used for being matched with the screw to limit the first connecting bar is formed in the first fixing frame.

Optionally, the winding assembly further comprises a second positioning rod for positioning the filter paper, and the second positioning rod is arranged on the second fixing frame and located below the winding roller.

Optionally, be provided with the determine module on the second mount, the determine module includes registration roller, swing strip, swing roller and position sensor, the registration roller set up in on the second mount, the registration roller is located second locating lever top just is located the wind-up roll below, swing strip rotate set up in the both ends of registration roller, the both ends of swing roller are fixed in respectively and correspond on the swing strip, the axial direction of swing roller with the axial direction of registration roller is unanimous mutually, position sensor is used for detecting swing strip position, position sensor respectively with first power spare, second power spare electric connection.

Optionally, a limiting assembly is arranged on the first fixing frame and comprises a supporting rod and two limiting strips, the supporting rod is arranged along the extending direction of the fixing rod, the height of the axis of the supporting rod is lower than the height of the axis of the fixing rod, the two limiting strips are arranged on the supporting rod along the axial direction of the supporting rod at intervals, and the extending direction of the limiting strips is perpendicular to the axial direction of the supporting rod.

In a second aspect, an embodiment of the present application provides a material forming press, which employs the above automatic paper changing mechanism.

As can be seen from the above, the present application has the following beneficial technical effects: realized the automation of changing the filter paper process, the convenience of changing filter paper has been improved, staff's intensity of labour has been reduced, be favorable to guaranteeing work efficiency, and simultaneously, through setting up spacing subassembly and determine module, the operational reliability who trades paper mechanism automatically has been improved, through setting up first connecting strip and second connecting strip, the use flexibility that trades paper mechanism automatically has been improved, in addition, the continuous use of filter paper roll can be realized to this application, the rate of utilization of filter paper has been improved greatly, be favorable to reducing manufacturing cost.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

Fig. 1 is a schematic structural diagram of a material forming press according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of an automatic paper changing mechanism provided in the embodiment of the present application.

Fig. 3 is a schematic structural view of the automatic paper changing mechanism in fig. 2 from another view angle.

Fig. 4 is a schematic structural diagram of an unwinding assembly in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a rolling assembly in the embodiment of the present application.

Description of reference numerals: 100. a material forming press body; 200. an unwinding assembly; 210. a first fixing frame; 211. a first arc-shaped slot; 212. a second arc-shaped slot; 220. fixing the rod; 230. a power roller; 240. a compression roller; 241. a swing block; 250. a first positioning rod; 251. a connecting strip; 2511. a first connecting bar; 2512. a second connecting strip; 260. a first drive motor; 300. a winding component; 310. a second fixing frame; 320. a wind-up roll; 330. a second positioning rod; 340. a second drive motor; 4. filtering paper; 500. a detection component; 510. a positioning roller; 520. a swing bar; 530. a swing roll; 600. a limiting component; 610. a limiting strip; 620. a support rod.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a material forming press disclosed in an embodiment of the present application includes a material forming press body 100 and an automatic paper changing mechanism disposed on the material forming press body 100.

Referring to fig. 1 and 2, the automatic paper changing mechanism provided in the embodiment of the present application includes an unwinding assembly 200 and a winding assembly 300 respectively disposed on two opposite outer sides of the material forming press body 100, wherein the unwinding assembly 200 is used for placing a filter paper roll, and the winding assembly 300 is used for winding the filter paper 4. When the filter paper winder is used, one end of the filter paper 4 is firstly released by the unreeling component 200, then the filter paper 4 penetrates between the upper die and the lower die and extends to the reeling component 300, and finally the filter paper 4 is reeled by the reeling component 300.

Specifically, in the material forming press working process, can extrude filter paper 4 when going up mould and lower mould compound die, adsorb through liquid such as moisture that filter paper 4 produced when the compound die, after the die sinking, rolling subassembly 300 will adsorb old filter paper 4 that have moisture and carry out the rolling, unreel subassembly 200 release new filter paper 4 simultaneously, so, unreel under the combined action of subassembly 200 and rolling subassembly 300, reach the purpose of automatic change filter paper 4.

It should be noted that the automatic paper changing mechanism provided by the present application may be provided with only one layer of filter paper 4 or two, three, or even more layers of filter paper 4, and in the embodiment of the present application, only two layers of filter paper 4 are provided, and when one layer or two layers are provided, the structure of providing two layers of filter paper 4 is referred to below for adaptive modification.

Referring to fig. 2 to 4, the unwinding assembly 200 in the embodiment of the present application includes a first fixing frame 210, a fixing rod 220, a first power component and a first positioning rod 250, wherein the first fixing frame 210 is installed on an upper portion of one side of the material forming press 100, the fixing rod 220 is horizontally installed on the first fixing frame 210, the first power component includes a power roller 230, a pressure roller 240 and a first driving motor 260, the power roller 230 is rotatably installed on the first fixing frame 210, the power roller 230 is located below the fixing rod 220, an axial direction of the power roller 230 is consistent with an axial direction of the fixing rod 220, the power roller 230 can rotate around an axis of the power roller 230, the first driving motor 260 is disposed on the first fixing frame 210, and one end of the power roller 230 is coaxially and fixedly connected with an output shaft of the first driving motor 260.

The pressing roller 240 is rotatably disposed at one side of the power roller 230 by two swing blocks 241, an axial direction of the pressing roller 240 is identical to an axial direction of the power roller 230, a gap through which the filter paper 4 passes is formed between the pressing roller 240 and the power roller 230, and the size of the gap can be adjusted to pass the filter paper 4 having different thicknesses when the pressing roller 240 is swung.

Specifically, referring to fig. 3 and 4, the swing block 241 in this embodiment of the present application is a rectangular block, one end of the swing block 241 is rotatably disposed at a predetermined position on the first fixing frame 210, a first arc-shaped groove 211 for the installation of the pressure roller 240 is disposed on the first fixing frame 210, a circle center of a full circle corresponding to the first arc-shaped groove 211 is consistent with a rotation center of the swing block 241 on the first fixing frame 210, two ends of the pressure roller 240 penetrate through the corresponding first arc-shaped grooves 211, and an end of the pressure roller 240 penetrating out of the first arc-shaped groove 211 is fixedly connected to the corresponding swing block 241.

Specifically, referring to fig. 3 and 4, the first positioning rod 250 is disposed on the first fixing frame 210 through two connecting strips 251, the two connecting strips 251 and the first positioning rod 250 are substantially arranged in a U shape, one end of the connecting strip 251 is disposed on the first fixing frame 210, two ends of the first positioning rod 250 are respectively fixed at an end of the connecting strip 251 away from the first fixing frame 210, the first positioning rod 250 is disposed below the power roller 230, and an extending direction of the first positioning rod 250 is consistent with an axial direction of the power roller 230.

Referring to fig. 2, 3 and 5, the winding assembly 300 in the embodiment of the present application includes a second fixing frame 310, a winding roller 320, a second power member and a second positioning rod 330, wherein the second fixing frame 310 is installed on an upper portion of one side of the material forming press 100, and the first fixing frame 210 and the second fixing frame 310 are respectively located on two sides of the material forming press 100 that are away from each other. The wind-up roll 320 is horizontally and rotatably disposed on the second fixing frame 310, the second positioning rod 330 is disposed on the second fixing frame 310 and below the wind-up roll 320, and the extending direction of the second positioning rod 330 is consistent with the axial direction of the wind-up roll 320. The wind-up roll 320 can rotate around its own axis, and the second driving piece in this embodiment of the application includes second driving motor 340, and second driving motor 340 sets up on second mount 310, and the one end of wind-up roll 320 links firmly with the output shaft of second driving motor 340 is coaxial.

Referring to fig. 2 and 3, when the automatic paper changing mechanism is used, a filter paper roll is first placed on the fixing rod 220 in the unwinding assembly 200, and the filter paper roll can rotate around the fixing rod 220. Of course, the fixing rod 220 may be rotated relative to the first fixing frame 210, and the filter paper roll may be coaxially fixed on the fixing rod 220. Then, one end of the filter paper 4 is pulled out and passes through the gap between the power roller 230 and the pressing roller 240 from top to bottom, and the position of the pressing roller 240 is adjusted to enable the pressing roller 240 to tightly press the filter paper 4. Next, the filter paper 4 is extended below the first positioning rod 250 and contacts the outside of the first positioning rod 250, the filter paper 4 is extended below the second positioning rod 330 and contacts the outside of the second positioning rod 330, and finally the filter paper 4 is extended upward and wound around the winding roller 320 in the winding assembly 300.

During operation, the power supplies of the first driving motor 260 and the second driving motor 340 are switched on, the first driving motor 260 and the second driving motor 340 intermittently rotate for a preset time period at the same time, the power roller 230 is driven to rotate when the first driving motor 260 rotates, the filter paper 4 is tightly abutted to the outer side of the power roller 230 by the pressing roller 240, the power roller 230 drives the filter paper 4 to move to release new filter paper 4 under the action of friction force, meanwhile, when the second driving motor 340 rotates, the winding roller 320 is driven to rotate to wind the old filter paper 4 attached with moisture, and therefore automation of the filter paper 4 replacing process is achieved.

In some embodiments, in order to improve the operational reliability of the automatic paper changing mechanism, the detecting assembly 500 is disposed on the second fixing frame 310 of the winding assembly 300. Specifically, referring to fig. 5, the detecting assembly 500 includes a positioning roller 510, a swing bar 520, and a swing roller 530, wherein the positioning roller 510 is disposed at a position above the second positioning rod 330 of the second fixing frame 310, the positioning roller 510 is located below the wind-up roller 320, and an axial direction of the positioning roller 510 is consistent with an axial direction of the wind-up roller 320. The swing rollers 530 are rotatably arranged on the positioning rollers 510 through the two swing strips 520, the swing rollers 530 and the two swing strips 520 are arranged in a U shape, one ends of the swing strips 520 are rotatably arranged on the positioning rollers 510, two ends of the swing rollers 530 are respectively fixed at the ends, far away from the positioning rollers 510, of the corresponding swing strips 520, the axial direction of the swing rollers 530 is consistent with the axial direction of the positioning rollers 510, when no external force acts, the swing rollers 530 are in a sagging state under the action of self gravity, the height of the axes of the swing rollers 530 is lower than that of the axes of the positioning rollers 510, and when the external force acts, the swing rollers 530 can drive the swing strips 520 to rotate around the axes of the positioning rollers 510 within a preset angle range. The second fixing frame 310 is provided with a position sensor (not shown) for detecting the position of the swing strip 520, the position sensor is electrically connected to the first driving motor 260 and the second driving motor 340, and when the position sensor detects that the swing strip 520 rotates by a predetermined angle, the position sensor sends corresponding electrical signals to the first driving motor 260 and the second driving motor 340, respectively.

During the specific use, extend filter paper 4 to the below of second locating lever 330 and make filter paper 4 and the outside looks butt of second locating lever 330 after, make filter paper 4 from top to bottom from the top of registration roller 510 round and from bottom to top round swing roller 530 and wind on wind-up roll 320 finally. When the second driving motor 340 winds the filter paper 4, an upward acting force is generated on the filter paper 4, so that an upward acting force is generated on the swinging roller 530, the swinging roller 530 drives the swinging strip 520 to rotate around the axis of the positioning roller 510, when the position sensor detects that the swinging strip 520 rotates by a preset angle, an electric signal is sent to the second driving motor 340, the second driving motor 340 stops winding, and meanwhile, the electric signal is sent to the first driving motor 260, so that the two driving motors start to release new filter paper 4.

Under the cooperation of the detection assembly 500, the first driving motor 260 and the second driving motor 340 can cooperate to work within a correct and flexible time period, so as to reduce the occurrence of the situation that the rolling assembly 300 is not rolled on the unreeling assembly 200 by force to tear the roll of filter paper 4.

In other embodiments, in order to adjust the height of the filter paper 4, the connection bar 251 of the unwinding assembly 200 may be provided in a length-adjustable structure, and an included angle between the connection bar 251 and the horizontal line may be adjusted within a predetermined angle range.

Specifically, referring to fig. 3 and 4, the connecting bar 251 is configured to include a first connecting bar 2511 and a second connecting bar 2512, wherein one end of the first connecting bar 2511 is mounted on the first fixing frame 210 through a screw, and the first fixing frame 210 is provided with a second arc-shaped groove 212 for matching with the screw to limit the first connecting bar 2511. Second connecting strip 2512 sets up in the one end that first mount 210 was kept away from to first connecting strip 2511, a plurality of connecting holes have all been seted up on first connecting strip 2511 and the second connecting strip 2512, and the position of a plurality of connecting holes on first connecting strip 2511 is corresponding with the position of connecting hole on the second connecting strip 2512, second connecting strip 2512 is fixed in different positions on first connecting strip 2511 through fasteners such as different connecting holes and screws, the both ends of first locating lever 250 are fixed in respectively that the second connecting strip is far away 2512 from the tip of first mount 210, through adjusting the position of second connecting strip 2512 for first connecting strip, can adjust the position of first locating lever 250, thereby adjust the height of filter paper 4.

In some other embodiments, in order to prevent the filter paper roll from axially shifting on the fixing rod 220 or the winding roller 320, a limiting component 600 is respectively arranged on the first fixing frame 210 and the second fixing frame 310. Specifically, referring to fig. 4 and 5, the limiting assembly 600 in the embodiment of the present application includes a supporting rod 620 and two limiting strips 610, the supporting rod 620 is disposed on the first fixing frame 210 or the second fixing frame 310, an extending direction of the supporting rod 620 is consistent with an extending direction of the fixing rod 220 or an axial direction of the winding roller 320, and a height of an axis of the supporting rod 620 is lower than a height of an axis of the fixing rod 220 or a height of an axis of the winding roller 320. One end of the two limiting strips 610 is rotatably arranged on the supporting rod 620, the extending direction of the limiting strips 610 is perpendicular to the extending direction of the supporting rod 620, the two limiting strips 610 are arranged at a preset distance along the axial direction of the supporting rod 620, specifically, the distance between the two limiting strips 610 is consistent with the width of the filter paper 4, the two limiting strips 610 abut against the top of the fixed rod 220 or the winding roller 320 under the action of self gravity, and therefore the position of the filter paper roll is limited through the two limiting strips 610, and the situation that the filter paper roll axially moves on the fixed rod 220 or the winding roller 320 is prevented.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

What has been described above are but some of the embodiments of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.