CN217857536U - Label film dust collector - Google Patents

Abstract

The utility model relates to a label processing field, concretely relates to label film dust collector, which comprises a frame, wherein a film releasing roller is rotationally connected to the frame, a film dust collecting mechanism is arranged on the frame, the film dust collecting mechanism comprises a conveying roller, a middle roller and an ash sticking roller which can rotate uniformly, the roller shafts of the conveying roller, the middle roller and the ash sticking roller are arranged in parallel, the circumferential surface of the conveying roller, the circumferential surface of the middle roller and the circumferential surface of the ash sticking roller are sequentially abutted, the circumferential surface of the middle roller and the circumferential surface of the ash sticking roller have viscosity, and the viscosity of the middle roller is smaller than that of the ash sticking roller; the film on the film releasing roller passes between the conveying roller and the intermediate roller after being released from the film releasing roller. This scheme realizes clearing up the dust on the label film, can not make the dust of clearance waft in the workshop.

Description

Label film dust collector

Technical Field

The utility model relates to a label processing field, concretely relates to label film dust collector.

Background

A laminating machine is used for covering a layer of film on the surface of the label in the production process of the label so as to improve the strength and the attractiveness of the label, so that the label has a waterproof function and the service life of the label is prolonged.

The film is in production and processing and transportation, some dust in the film can the adhesion air on the surface, the effect of the film attached on the label can be influenced to the existence of these dusts, the existence of dust can make the label have dirty point on the one hand, thereby influence the aesthetic measure of label, the existence of on the other hand dust also can make between film and the label attached inseparable, be kept apart by the dust between film and the label, the firm degree of the attached of film and label has been influenced, so dust on the film must clear away, otherwise can influence the production quality and the sales volume of label.

In order to clean the dust on the film, the inventor thinks of blowing the dust by using a blower, but the dust is removed in a mode that the dust is scattered in the whole workshop to accelerate the diffusion of the dust, so that the production workshop is not in a dust-free environment, and the dust in the air is scattered to other places of the workshop to influence the production processing quality of the label.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is providing label film dust collector to realize clearing up the dust on the label film, can not make the dust after the clearance waft in the workshop.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the label film dust removing device comprises a rack, wherein a film releasing roller is rotationally connected to the rack, a film dust removing mechanism is arranged on the rack and comprises a conveying roller, a middle roller and an ash sticking roller which can rotate uniformly, roller shafts of the conveying roller, the middle roller and the ash sticking roller are arranged in parallel, the circumferential surface of the conveying roller, the circumferential surface of the middle roller and the circumferential surface of the ash sticking roller are abutted in sequence, the circumferential surface of the middle roller and the circumferential surface of the ash sticking roller have viscosity, and the viscosity of the middle roller is smaller than that of the ash sticking roller; the film on the film releasing roller passes between the conveying roller and the intermediate roller after being released from the film releasing roller.

The principle and the advantages of the scheme are as follows: the film releasing roller is wound with a film and used for releasing and providing the film. The released film passes between the intermediate roller and the conveying roller, and the intermediate roller has viscosity, so that when the film passes between the intermediate roller and the conveying roller, the intermediate roller can stick down dust on the film along with the rotation of the intermediate roller and the movement of the film, and the dust on the film is transferred to the intermediate roller. Because middle roller and sticky grey roller offset to sticky grey roller's viscidity is greater than middle roller's viscidity, consequently along with middle roller and sticky grey roller's rotation, sticky grey roller can stick down the dust of the adhesion on the middle roller under great viscous force effect, thereby realized the self-cleaning of middle roller, realized that the dust shifts to sticky grey roller again from the film to middle roller, avoided the gathering to have too much dust in order to guarantee middle roller's cleaning ability on the middle roller.

In addition, in the scheme, the middle roller with the smaller viscous force is used for adhering the dust on the film, the dust on the film is not directly adhered by the dust adhering roller with the larger viscous force, the middle roller has smaller viscosity, the film can be prevented from being broken due to the larger viscous force of the middle roller, and if the dust on the film is directly adhered by the dust adhering roller with the larger viscous force, the film is easy to be broken due to the larger viscous force because the film is thinner.

To sum up, through this scheme, realize clearing up the dust on the label film, compare the mode that uses the hair-dryer to remove dust, can not make the dust fly away and spread in the workshop, do benefit to the dustless environment in the assurance workshop.

Preferably, as an improvement, the film dust removal mechanism further comprises a support frame fixed on the frame, and the conveying roller, the middle roller and the dust adhering roller can be detachably mounted on the support frame. The support frame is used for supporting conveying roller, middle roller and adhesive dust roller, and the support frame is as the carrier of conveying roller, middle roller and adhesive dust roller setting. Because transfer roller, middle roller and the equal demountable installation of ash roller that glues are on the support frame, consequently transfer roller, middle roller and ash roller that glues can be dismantled, change according to actual use condition.

Preferably, as an improvement, the circumferential surface of the dust-sticking roller is wrapped with a plurality of adhesive layers which can be torn off from the dust-sticking roller; the position of the ash sticking roller is adjustable, and the distance between the two roller shafts of the ash sticking roller and the middle roller is adjusted. When the dust adhering roller is used for a period of time, more dust can be adhered to the dust adhering roller, so that the adhesion force of the dust adhering roller is influenced. And through this scheme, glue after being stained with more dust on the ash roller, will glue the glue film that ash roller outer was stained with the dust and tear down, glue the ash roller and can expose new glue film on the surface to can continue to carry out the adhesion to the dust.

Along with tearing off of the glue film on the sticky roller, the diameter of the sticky roller can become little, and at the moment, a gap can appear between the sticky roller and the middle roller, so that the effect of adhering dust on the sticky roller is influenced. Therefore, the distance between the ash sticking roller and the intermediate roller is adjusted by adjusting the position of the ash sticking roller, so that the surface of the ash sticking roller can still abut against the surface of the intermediate roller even if the diameter of the ash sticking roller is reduced, and dust on the intermediate roller can be adhered.

Preferably, as an improvement, the both ends of gluing grey roller all are equipped with the slider, and the tip of gluing grey roller rotates to be connected on the slider, and slider sliding connection is connected on the support frame, is connected with between slider and the support frame to make and glue grey roller and support the elastic component tight on the middle roller. Therefore, the sliding block is connected to the support frame in a sliding mode, the position of the ash sticking roller on the support frame is not locked, and therefore the ash sticking roller can move towards the direction close to the middle roller under the action of the elastic piece and is in a state of abutting against the middle roller all the time after the adhesive layer on the ash sticking roller is torn off and the diameter of the ash sticking roller is reduced.

Preferably, as an improvement, one end of the elastic element on the sliding block is detachably connected with the sliding block;

or one end of the elastic piece on the support frame is detachably connected with the support frame.

Therefore, the end part of the elastic piece can be detached from the sliding block or the supporting frame, and the elastic piece does not obstruct the ash sticking roller from being detached from the supporting frame by detaching the elastic piece.

Preferably, as an improvement, a first connecting position used for being connected with one end of the elastic piece is fixedly connected to the sliding block, and a second connecting position used for being connected with the other end of the elastic piece is fixedly connected to the supporting frame; at least one end part of the elastic part is fixedly connected with a hook; when the hook is positioned at one end of the elastic piece close to the first connecting position, the hook is hooked on the first connecting position; when the hook is positioned at one end of the elastic part close to the second connecting position, the hook is hooked on the second connecting position.

From this, the couple hook through the elastic component tip is hung on first hookup location or second hookup location to realized that the tip of elastic component can dismantle to connect on slider or support frame, the connection can be dismantled to the mode that adopts the couple hook, compares other connected modes (if adopt bolt, screw connection mode), and the connected mode is more simple and convenient, easily the operation.

Preferably, as an improvement, be equipped with first breach on the support frame, be equipped with the spout on the inner wall of first breach, the slider is located first breach, fixedly connected with slip fixture block on the slider, and the slip fixture block slides and sets up in the spout. From this, the slider can slide in first breach, through the slip fixture block card in the spout, has played direction, spacing effect for the slip of slider like this, and the slider only can slide along the length direction of spout, and the slider can not drop from first breach.

Preferably, as an improvement, two ends of the conveying roller are respectively provided with a first mounting block, the end part of the conveying roller is rotatably connected to the first mounting block, the supporting frame is provided with a second notch, and the first mounting block is mounted in the second notch; the both ends of middle roller are equipped with second installation piece respectively, and the tip of middle roller rotates to be connected on second installation piece, is equipped with the third breach on the support frame, and second installation piece is installed in the third breach. From this, through installing first installation piece in the second breach, realized that the transfer roller is installed on the support frame, through taking off first installation piece from the second breach, realized pulling down from the support frame on the transfer roller, from this, realized the connection dismantled of transfer roller and support frame. In a similar way, the second mounting block is mounted in the third notch or taken out of the third notch, so that the detachable connection between the middle roller and the support frame is realized.

Preferably, as a modification, cover plates for fixing the first mounting block and the second mounting block are fixed to the outer sides of the second notch and the third notch, respectively. From this, through setting up the apron, can avoid first installation piece and second installation piece to come out from second breach and third breach respectively, first installation piece and second installation piece can be stable be arranged in second breach and third breach respectively.

Preferably, as a modification, the elastic member is a tension spring. Therefore, the tension spring pulls the ash sticking roller to be tightly pressed against the middle roller under the action of the tension force of the tension spring. The elastic part applies force to the ash sticking roller in a tension spring mode, and compared with the mode of applying force to the ash sticking roller in a compression spring mode, the tension spring cannot be bent, and the compression spring can be bent under the extrusion effect when being pressed.

Drawings

Fig. 1 is a perspective view of a label film dust removing device.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is an enlarged view of B in fig. 1.

Fig. 4 is a front view of the pasting roller.

FIG. 5 is a schematic view of the side of the slider near the ash roller.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a frame 1, a film releasing roller 2, a conveying roller 3, a middle roller 4, a dust adhering roller 5, a supporting frame 6, a first mounting block 7, a second mounting block 8, a sliding block 9, a guide roller 10, a second connecting column 11, a first connecting column 12, a hook 13, an elastic piece 14, a cover plate 15, a second screw 16, a first screw 17, a sliding groove 18, a tearing seam 19, a tearing part 20, a clamping groove 21, an inner ring 22 and a sliding clamping block 23.

Example 1

Substantially as shown in figure 1: the label film dust removal device comprises a rack 1, wherein a film release roller 2 and a guide roller 10 positioned below the film release roller 2 are rotatably connected to the rack 1 through a bearing, and the guide roller 10 and the film release roller 2 can be driven to rotate actively through a servo motor (the guide roller 10 or the film release roller 2 can be driven coaxially by a rotating shaft of the servo motor); of course, the guide roller 10 and the film releasing roller 2 can be pulled to rotate passively by the transmission of the film during the transmission of the film between different processing production devices in a workshop.

Be equipped with film dust removal mechanism in frame 1, film dust removal mechanism includes support frame 6 and homoenergetic pivoted transfer roller 3, middle roller 4 and glues grey roller 5, and support frame 6 is two, and two support frames 6 are transversely fixed in frame 1 through first screw 17, and support frame 6 also can be fixed in frame 1 through the welded mode, and the former fixed mode is selected to this embodiment. Conveying roller 3, middle roller 4 and glue grey roller 5 and all install on support frame 6, and conveying roller 3, middle roller 4 and the roller shaft parallel arrangement who glues 5 three of grey roller, the circumferential surface of conveying roller 3, the circumferential surface of middle roller 4 and the circumferential surface who glues grey roller 5 offset in proper order. The circumferential surface of the intermediate roller 4 and the circumferential surface of the ash sticking roller 5 both have viscosity, the viscosity of the intermediate roller 4 is smaller than that of the ash sticking roller 5, and the specific implementation mode is as follows: the outer surface of the plastering roller 5 is coated with an adhesive (e.g., a polyurethane adhesive) to have tackiness, and the surface of the intermediate roller 4 itself has no tackiness, but since the intermediate roller 4 and the plastering roller 5 are abutted against each other, a very small amount of the adhesive on the surface of the plastering roller 5 is adhesively transferred to the intermediate roller 4 during rotation of the intermediate roller 4 and the plastering roller 5, so that the surface of the intermediate roller 4 has less tackiness, and needless to say, the tackiness obtained on the surface of the intermediate roller 4 by abutment against the surface of the plastering roller 5 is smaller than the tackiness of the plastering roller 5 itself. The film on the film releasing roller 2 passes through between the conveying roller 3 and the intermediate roller 4 after being released from the film releasing roller 2, and the film passing through between the conveying roller 3 and the intermediate roller 4 is conveyed to other processing equipment or other stations of a workshop through the guide roller 10.

In the embodiment, the rotation of the conveying roller 3, the middle roller 4 and the dust adhering roller 5 can be active rotation, and the active rotation refers to that the corresponding rollers are driven to rotate by a servo motor; the rotation of transfer roller 3, intermediate roll 4 and gluing grey roller 5 also can be for passive rotation, and passive rotation means through the conveying of film and pulling transfer roller 3 and intermediate roll 4 emergence rotation in the film transfer process, and when intermediate roll 4 rotated, intermediate roll 4 drove gluing grey roller 5 and rotates under the effect of frictional force.

The film in this scheme is released from film release roller 2, and the film that releases passes between intermediate roll 4 and transfer roller 3, because intermediate roll 4 has viscidity, so when the film passes between intermediate roll 4 and transfer roller 3, along with the rotation of intermediate roll 4 and the downward removal of film, intermediate roll 4 can glue down the dust on the film to make the dust on the film transfer to intermediate roll 4.

Because middle roller 4 offsets with gluing grey roller 5 to the viscidity of gluing grey roller 5 is greater than middle roller 4's viscidity, consequently along with middle roller 4 and the rotation of gluing grey roller 5, glue grey roller 5 can glue down the dust of the adhesion on middle roller 4 under great viscous force effect, dust can shift to gluing grey roller 5 on the middle roller 4, thereby realized the self-cleaning of middle roller 4, avoid on the middle roller 4 gathering have too much dust in order to guarantee that middle roller 4 adheres the ability that the dust got down on the film.

Example 2

The ash sticking roller 5 in the embodiment is detachably mounted on the support frame 6, so that the ash sticking roller 5 can be taken down from the support frame 6 after being mounted on the support frame 6, the position of the ash sticking roller 5 is adjustable, the distance between the two roller shafts of the ash sticking roller 5 and the intermediate roller 4 is adjusted, and the concrete connection mode of the ash sticking roller 5 and the support frame 6 is as follows: as shown in fig. 1-2, the two ends of the ash-adhering roller 5 are both provided with a slider 9, the roller shafts at the ends of the ash-adhering roller 5 are rotatably connected to the slider 9 through bearings, the two support frames 6 are both provided with first transversely-arranged notches, the openings of the first notches are located at the right end parts of the support frames 6, the slider 9 is located in the first notches, the upper and lower inner walls of the first notches are provided with chutes 18, as shown in fig. 5, the top and the bottom of the slider 9 are provided with sliding fixture blocks 23, and the sliding fixture blocks 23 are slidably located in the chutes 18.

As shown in fig. 2, an elastic member 14 for tightly abutting the ash adhering roller 5 on the intermediate roller 4 is connected between the sliding block 9 and the supporting frame 6, a first connecting position for connecting with one end of the elastic member 14 is welded on the sliding block 9, the first connecting position is a first connecting column 12, a second connecting position for connecting with the other end of the elastic member 14 is welded on the supporting frame 6, the second connecting position is a second connecting column 11, and the first connecting column 12 is located on the right side of the second connecting column 11. The both ends of elastic component 14 are connected respectively on first spliced pole 12 and second spliced pole 11, and the connected mode is: two ends of the elastic piece 14 are respectively detachably connected to the first connecting column 12 and the second connecting column 11; or one end of the elastic piece 14 is welded on the first connecting column 12, and the other end of the elastic piece 14 is detachably connected on the second connecting column 11; alternatively, one end of the elastic member 14 is welded to the second connecting post 11, and the other end of the elastic member 14 is detachably connected to the first connecting post 12. In this embodiment, preferably, one end of the elastic member 14 is welded on the first connecting post 12, the other end of the elastic member 14 is detachably connected to the second connecting post 11, for the specific detachable connection manner, the left end of the elastic member 14 is fixed on the second connecting post 11 by a screw, or the left end of the elastic member 14 is welded with the hook 13, and is hooked on the second connecting post 11 by the hook 13, and the detachable connection manner of the latter is preferred in this embodiment. The elastic member 14 in this embodiment is a tension spring.

The way of adhesion on the ash sticking roller 5 in this embodiment is different from that in embodiment 1, specifically: the parcel has the multilayer glue film (from the inside of gluing grey roller 5 to the outer fringe, the diameter grow gradually of glue film) on gluing grey roller 5's the circumferential surface, and the lateral surface of glue film has viscidity, and it has the multilayer sticky tape to be similar to the winding on gluing grey roller 5, but the sticky tape is reverse winding on the roller, and on the sticky one side of sticky tape did not also face the roller, the sticky one side of sticky tape had deviated from in the roller. The glue film can be followed and glued grey roller 5 and torn down, and it is shown with fig. 4 to combine, all is equipped with tear seam 19 on every layer of glue film (tear seam 19 can be a gap, also can be the connection site of the intermittent and continuous connection of similar to dotted line), and homogeneous body shaping has the portion of tearing 20 that is located 5 tip of gluing grey roller on every layer of glue film, and the setting of portion of tearing 20 is convenient for pull the glue film, and when pulling the glue film, the glue film is torn down from tear seam 19.

After the ash sticking roller 5 is used for a period of time, more dust can be stuck on the ash sticking roller 5, so that the sticking force of the ash sticking roller 5 is influenced. At this time, the hook 13 is taken down from the second connecting column 11, then the slide block 9 is slid towards the right side of the support frame 6, the slide block 9 and the dust adhering roller 5 are taken down from the support frame 6, after the dust adhering roller 5 is taken down, the adhesive layer with dust adhered on the outer layer of the dust adhering roller 5 is torn down from the tearing seam 19 by pulling the tearing part 20, and a new adhesive layer is exposed on the surface of the dust adhering roller 5.

Then the dust-sticking roller 5 and the slide block 9 are reassembled on the supporting frame 6, the hook 13 is re-hooked on the second connecting column 11, the slide block 9 moves leftwards (in the direction close to the intermediate roller 4) under the action of the pulling force of the elastic piece 14, and the dust-sticking roller 5 is abutted against the surface of the intermediate roller 4 under the action of the pulling force of the elastic piece 14, so that dust on the intermediate roller 4 can be adhered.

Example 3

As shown in fig. 1 and 3, the conveying roller 3 and the guide roller 10 in this embodiment are both detachably mounted on the supporting frame 6, and the specific mounting manner is as follows: the two ends of the conveying roller 3 are respectively provided with a first mounting block 7, a roller shaft at the end part of the conveying roller 3 is rotatably connected to the first mounting block 7 through a bearing, a second notch is arranged on the supporting frame 6, the opening of the second notch faces upwards, and the first mounting block 7 is mounted in the second notch; the both ends of middle roller 4 are equipped with second installation piece 8 respectively, and the roller of the tip of middle roller 4 passes through the bearing and rotates the connection on second installation piece 8, is equipped with the third breach on the support frame 6, and the opening of third breach is up, and second installation piece 8 is installed in the third breach. A cover plate 15 for fixing the first mounting block 7 and the second mounting block 8 is fixed to the outer side of the second notch (above the first mounting block 7) and the outer side of the third notch (above the second mounting block 8) on the top of the support frame 6 by second screws 16. The first mounting block 7 and the second mounting block 8 are fixed by the cover plate 15, so that the first mounting block 7 and the second mounting block 8 do not move upwards and come out of the second notch and the third notch, respectively.

Because the conveying roller 3 and the guide roller 10 can be detachably arranged on the supporting frame 6, the conveying roller 3 and the guide roller 10 can be replaced conveniently.

Example 4

For can dismantling the connection between first installation piece 7 and the transfer roller 3 in this embodiment, the connection can be dismantled between second installation piece 8 and the middle roller 4, and for dismantling the connection between slider 9 and the ash roller 5, the three can dismantle the connected mode the same to ash roller 5 is the example, and concrete detachable connected mode is: as shown in fig. 5, the bearing is mounted on the slider 9, the inner wall of the inner ring 22 of the bearing is provided with the clamping grooves 21, the number of the clamping grooves 21 is four, the clamping grooves are uniformly distributed around the center of the bearing, four clamping blocks are integrally formed on the outer wall of the roller shaft of the dust adhering roller 5, the four clamping blocks are uniformly distributed around the roller shaft of the dust adhering roller 5, the roller shaft of the dust adhering roller 5 is inserted into the inner ring 22, and the clamping blocks are inserted into the clamping grooves 21 and clamped in the clamping grooves 21. The connection of gluing grey roller 5 and slider 9 has been realized to the accessible through inserting the roller of gluing grey roller 5 in inner circle 22 like this, through extracting the roller of gluing grey roller 5 from inner circle 22, has realized gluing grey roller 5 and slider 9's separation to can make different gluing grey roller 5 and slider 9 connect. When the roller shaft of the ash sticking roller 5 rotates, the roller shaft drives the inner ring 22 to rotate through the matching of the clamping block and the clamping groove 21. As the detachable connection mode of the first mounting block 7 and the transmission roller 3 is the same, the detachable connection mode of the second mounting block 8 and the middle roller 4 is not described in detail.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. Label film dust collector, including the frame, rotate in the frame and be connected with film release roller, its characterized in that: the film dust removing device comprises a frame, a conveying roller, an intermediate roller and an ash sticking roller, wherein the frame is provided with a film dust removing mechanism, the film dust removing mechanism comprises the conveying roller, the intermediate roller and the ash sticking roller which can rotate, roller shafts of the conveying roller, the intermediate roller and the ash sticking roller are arranged in parallel, the circumferential surface of the conveying roller, the circumferential surface of the intermediate roller and the circumferential surface of the ash sticking roller are sequentially abutted, the circumferential surface of the intermediate roller and the circumferential surface of the ash sticking roller are respectively provided with viscosity, and the viscosity of the intermediate roller is smaller than that of the ash sticking roller; the film on the film releasing roller passes through between the conveying roller and the intermediate roller after being released from the film releasing roller.

2. The label film dust removing device according to claim 1, wherein: the film dust removal mechanism further comprises a support frame fixed on the rack, and the conveying roller, the middle roller and the dust adhering roller can be detachably mounted on the support frame.

3. The label film dust removing device according to claim 2, wherein: the circumferential surface of the ash sticking roller is wrapped with a plurality of adhesive layers which can be torn off from the ash sticking roller; the position of the ash sticking roller is adjustable, and the distance between the two roller shafts of the ash sticking roller and the middle roller is adjusted.

4. The label film dust removing device according to claim 3, wherein: both ends of the ash adhering roller are provided with sliding blocks, the end part of the ash adhering roller is rotatably connected onto the sliding blocks, the sliding blocks are connected onto the supporting frame in a sliding manner, and an elastic part which enables the ash adhering roller to be tightly abutted to the middle roller is connected between the sliding blocks and the supporting frame.

5. The label film dust removing device according to claim 4, wherein: one end of the elastic piece, which is positioned on the sliding block, is detachably connected with the sliding block;

or one end of the elastic piece on the support frame is detachably connected with the support frame.

6. The label film dust removing device according to claim 5, wherein: the sliding block is fixedly connected with a first connecting position used for being connected with one end of the elastic piece, and the supporting frame is fixedly connected with a second connecting position used for being connected with the other end of the elastic piece; at least one end part of the elastic part is fixedly connected with a hook; when the hook is positioned at one end of the elastic piece close to the first connecting position, the hook is hooked on the first connecting position; when the hook is positioned at one end of the elastic piece close to the second connecting position, the hook is hooked on the second connecting position.

7. The label film dust removing device according to claim 4, wherein: the supporting frame is provided with a first notch, the inner wall of the first notch is provided with a sliding groove, the sliding block is located in the first notch, the sliding block is fixedly connected with a sliding clamping block, and the sliding clamping block is arranged in the sliding groove in a sliding mode.

8. The label film dust removing device according to claim 2, wherein: the two ends of the conveying roller are respectively provided with a first mounting block, the end part of the conveying roller is rotatably connected to the first mounting block, the supporting frame is provided with a second notch, and the first mounting block is mounted in the second notch; the both ends of middle roller are equipped with second installation piece respectively, the tip of middle roller rotates to be connected on the second installation piece, be equipped with the third breach on the support frame, the second installation piece is installed in the third breach.

9. The label film dust removing device according to claim 8, wherein: and cover plates for fixing the first mounting block and the second mounting block are respectively fixed on the outer side of the second notch and the outer side of the third notch.

10. The label film dust removing device according to claim 4, wherein: the elastic piece is a tension spring.

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