CN218428710U - Automatic dust removal mechanism for film trimming and film trimming device - Google Patents
Automatic dust removal mechanism for film trimming and film trimming device Download PDFInfo
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- CN218428710U CN218428710U CN202222344585.1U CN202222344585U CN218428710U CN 218428710 U CN218428710 U CN 218428710U CN 202222344585 U CN202222344585 U CN 202222344585U CN 218428710 U CN218428710 U CN 218428710U
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Abstract
The utility model provides an automatic dust removal mechanism of membrane material side cut and membrane material side cut device, including the negative pressure source and with the absorption tool of negative pressure source intercommunication, it is used for setting up to adsorb the tool the side cut department of membrane material, adsorb the tool have be used for towards the positive first adsorption plane of membrane material and be used for towards the second adsorption plane of membrane material reverse side, first adsorption plane with the negative pressure hole has all been seted up on the second adsorption plane, adsorb the tool still seted up with the absorption hole of negative pressure source intercommunication, each the negative pressure hole all communicates to the absorption hole. The utility model provides a membrane material side cut automatic dust removal mechanism and membrane material side cut device adopts absorption tool and negative pressure source complex mode to remove dust, need not to cut edge with the membrane material and contact, consequently can not damage, fish tail membrane material surface, when using for a long time, also can not appear the not good scheduling problem of dust removal effect.
Description
Technical Field
The utility model belongs to the technical field of the film production, more specifically say, relate to an automatic dust removal mechanism of membrane material side cut and membrane material side cut device.
Background
In the normal process of producing the film materials such as the polaroid and the like, because the width of each layer of raw materials is inconsistent, part of the film materials need to be subjected to width trimming to be produced within a uniform specification range; the width of the laminated multilayer film is consistent. When the film material is trimmed, cutting jigs capable of adjusting the width are fixed on two sides of the film material, when the film material runs in the production direction, the cutting jigs automatically cut the film material, waste films are connected to the air expansion shaft, and meanwhile, waste film fixing clamping plates are arranged on two sides of the air expansion shaft, so that the waste films fall into the middle of the clamping plates all the time in the rotating process; and the waste film is coiled orderly by rotating the coiling motor. The film material with good edge cutting moves forwards through the pair of dust-binding rollers, the dust-binding rollers are in contact with the surface of the film (the upper roller is in contact with the upper surface of the film material, and the lower roller is in contact with the lower surface of the film material), foreign matters and scraps on the surface of the film are transferred away, and the dust removal effect is achieved.
The dust removal scheme adopted at present is to remove dust by contacting, adhering and transferring the surface of a dust adhering roller. The film material passes through the middle of the upper dust-binding roller and the lower dust-binding roller, the film material is conveyed forwards, the upper dust-binding roller and the lower dust-binding roller roll on the upper surface and the lower surface of the film material, and foreign matters and dust are stuck and transferred by utilizing the self viscosity of the dust-binding rollers, so that the aim of cleaning is fulfilled.
The technical scheme has the following defects:
because the dust-binding rollers are in direct contact with the upper surface and the lower surface of the film material, when the foreign matters and dust particles are large (the thickness of the film material plus the size of the attached foreign matters exceeds the gap between the upper dust-binding roller and the lower dust-binding roller), the film material can be crushed or damaged by the rolling of the dust-binding rollers; if the film material and the dust-binding roller generate sliding friction, the product is also scratched and other defects are caused. The dust-sticking roller is contacted with the film material, and foreign matters and scraps attached to the surface can be accumulated along with the increase of the service time; the viscosity is lost, the dust removing effect cannot be achieved, and the bad production is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic dust removal mechanism of membrane material side cut and membrane material side cut device to the membrane material who exists among the solution prior art is damaged, fish tail easily, uses for a long time moreover can lead to viscidity to lose, the not good technical problem of dust removal effect.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an automatic dust removal mechanism of membrane material side cut for the side cut of membrane material removes dust, membrane material side cut automatic dust removal mechanism include the negative pressure source and with the absorption tool of negative pressure source intercommunication, it is used for setting up to adsorb the tool the side cut department of membrane material, adsorb the tool have be used for towards the positive first adsorption plane of membrane material and be used for towards the second adsorption plane of membrane material reverse side, first adsorption plane with all seted up the negative pressure hole on the second adsorption plane, adsorb the tool still seted up with the adsorption hole of negative pressure source intercommunication, each the negative pressure hole all communicate to the adsorption hole.
Optionally, the adsorption jig further has a third adsorption surface facing the section of the film material, the third adsorption surface is provided with the negative pressure hole, and the first adsorption surface, the third adsorption surface and the second adsorption surface are sequentially connected.
Optionally, the adsorption jig is U-shaped, the adsorption jig has a U-shaped cavity into which the cut edge of the film material is inserted, and the first adsorption surface, the second adsorption surface and the third adsorption surface are cavity walls of the U-shaped cavity.
Optionally, the automatic dust removal mechanism of membrane material side cut still includes the filter, the filter set up in adsorb the tool with between the negative pressure source.
Optionally, the adsorption jig, the filter and the negative pressure source are sequentially connected through a flexible pipeline, and the flexible pipeline connected with the negative pressure source is provided with an adjusting valve for adjusting air pressure and a negative pressure meter for displaying air pressure.
Optionally, the automatic dust removal mechanism for the film material edge cutting further comprises an ultrasonic cleaning machine for cleaning the film material edge cutting.
Optionally, the automatic dust removal mechanism for the film material edge cutting further comprises an anti-static ion fan for cleaning the film material edge cutting.
Optionally, the first adsorption surface has a section of arc-shaped surface near the middle of the membrane material, or/and the second adsorption surface has a section of arc-shaped surface near the middle of the membrane material.
The utility model also provides a membrane material side cut device, including foretell membrane material side cut automatic dust removal mechanism.
Optionally, the film material edge cutting device further comprises a conveying mechanism for conveying the film material, an edge cutting mechanism for cutting the edge of the film material, and a winding mechanism for winding the cut waste film.
The utility model provides an automatic dust removal mechanism of membrane material side cut and membrane material side cut device's beneficial effect lies in: compared with the prior art, the utility model discloses membrane material is cut edge and is removed dust mechanism automatically includes negative pressure source and absorption tool, and the absorption tool has respectively towards first adsorption plane and the second adsorption plane of membrane material positive and negative, and has all seted up the negative pressure hole on first adsorption plane and the second adsorption plane for smear metal, dust etc. on the membrane material was cut edge get into the absorption hole that adsorbs the tool through the negative pressure hole, thereby under the negative pressure effect, get rid of smear metal, dust etc.. The adsorption jig and the negative pressure source are adopted for dust removal, and the adsorption jig and the negative pressure source are not required to be in side cutting contact with the membrane material, so that the surface of the membrane material cannot be damaged or scratched, and the problem of poor dust removal effect and the like cannot occur when the adsorption jig is used for a long time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a three-dimensional structure diagram of an automatic dust removing mechanism for trimming a film material provided by the embodiment of the utility model;
fig. 2 is a three-dimensional structure diagram of an adsorption jig of the automatic film trimming dust removing mechanism provided by the embodiment of the utility model;
fig. 3 is a three-dimensional structure diagram of the film material edge cutting device provided by the embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100-film material; 200-a winding mechanism;
1-adsorbing a jig; 11-a first adsorption surface; 12-a second adsorption surface; 13-a third adsorption surface; 14-negative pressure holes; 15-adsorption holes; 2-a filter; 3-a negative pressure source; 4-flexible pipe.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
It is right now that the embodiment of the utility model provides an automatic dust removal mechanism of membrane material side cut explains. In the normal process of producing the film materials 100 such as the polarizer, because the width of each layer of raw material is inconsistent, a part of the film materials 100 need to be cut to a uniform specification range for production. The automatic membrane material trimming dust removal mechanism is used for removing dust from the trimmed edges of the membrane material 100. The film material 100 may be a polarizer or other material, and the polarizer is a product formed by combining multiple layers of optical film materials 100, and may be composed of an RF release film, PSA pressure sensitive adhesive, TAC film, PVA film, functional film, PET protective film, and the like.
Referring to fig. 1 and 2, the automatic dust removing mechanism for trimming film material includes a negative pressure source 3 and an adsorption jig 1 connected to the negative pressure source 3. The negative pressure source 3 is used for providing negative pressure for the adsorption jig 1, and the negative pressure source 3 can be selected to be a vacuum pump and the like. The adsorption jig 1 is used for being arranged at the edge cutting position of the film material 100 and adsorbing cutting scraps, dust, foreign matters and the like at the edge cutting position of the film material 100.
The adsorption jig 1 has a first adsorption surface 11 and a second adsorption surface 12, the first adsorption surface 11 is used for facing the front surface of the film material 100, and the second adsorption surface 12 is used for facing the back surface of the film material 100. The first adsorption surface 11 and the second adsorption surface 12 are arranged oppositely, and the first adsorption surface 11 and the second adsorption surface 12 are both provided with negative pressure holes 14. The adsorption jig 1 is further provided with adsorption holes 15, each negative pressure hole 14 is communicated to the adsorption holes 15, the adsorption holes 15 are total air outlet holes of the adsorption jig 1, and the negative pressure source 3 is communicated with the adsorption jig 1 through the adsorption holes 15. Specifically, a negative pressure hole 14 formed in the first adsorption surface 11 has one end communicated to the first adsorption surface 11 and the other end communicated to an adsorption hole 15; the negative pressure hole 14 formed in the second adsorption surface 12 has one end connected to the second adsorption surface 12 and the other end connected to the adsorption hole 15.
When the film cutting is performed, the negative pressure source 3 is started, the adsorption jig 1 forms negative pressure at least at the first adsorption surface 11 and the second adsorption surface 12, the first adsorption surface 11 is used for adsorbing dust, chips and the like on the front surface of the film material 100 and the tangent plane of the film material 100, and the second adsorption surface 12 is used for adsorbing dust, chips and the like on the back surface of the film material 100 and the tangent plane of the film material 100, so that foreign matters near the tangent plane of the film material 100 are removed.
The automatic dust removing mechanism for the film material trimming in the above embodiment comprises a negative pressure source 3 and an adsorption jig 1, wherein the adsorption jig 1 is provided with a first adsorption surface 11 and a second adsorption surface 12 which respectively face the front side and the back side of the film material 100, and the first adsorption surface 11 and the second adsorption surface 12 are respectively provided with a negative pressure hole 14, so that the cutting scraps, dust and the like on the trimming edge of the film material 100 enter an adsorption hole 15 of the adsorption jig 1 through the negative pressure hole 14, and the cutting scraps, dust and the like are removed under the action of negative pressure. The adsorption jig 1 and the negative pressure source 3 are adopted for dust removal in a matched mode, and the adsorption jig does not need to be in edge cutting contact with the membrane material 100, so that the surface of the membrane material 100 cannot be damaged or scratched, and the problem of poor dust removal effect and the like cannot occur when the adsorption jig is used for a long time.
In one embodiment of the present invention, referring to fig. 2, the adsorption jig 1 further has a third adsorption surface 13, the third adsorption surface 13 is used for facing the section of the film material 100, the third adsorption surface 13 is also provided with a negative pressure hole 14, and the other end of the negative pressure hole 14 extends to communicate with the adsorption hole 15. When the negative pressure source 3 works, negative pressure is generated at the third adsorption surface 13, and the foreign matter on the section of the membrane material 100 can be removed well.
The first adsorption surface 11, the third adsorption surface 13 and the second adsorption surface 12 are sequentially connected, so that the area near the edge cutting of the membrane material 100 is surrounded by the adsorption jig 1, no cleaning dead angle exists, and most of dust, cutting scraps and the like are removed.
Alternatively, the number of the negative pressure holes 14 on the first adsorption surface 11 is plural, and the negative pressure holes may be distributed on the first adsorption surface 11 in a rectangular array or may be distributed on the first adsorption surface 11 in an annular array. The number of the negative pressure holes 14 on the second adsorption surface 12 and the third adsorption surface 13 can be multiple, and the negative pressure holes are distributed in a rectangular array or a circular array.
Optionally, referring to fig. 2, the first adsorption surface 11 has a section of arc-shaped surface near the middle of the film material 100, and the distance between the arc-shaped surface and the film material 100 gradually increases from the tangent plane of the film material 100 to the middle of the film material 100, so that the adsorption force exerted on the middle of the film material 100 is small, the middle of the film material 100 is prevented from being deformed due to an excessive force, and the normal operation of the film cutting process is ensured. Correspondingly, the middle part of the second adsorption surface 12 near the membrane material 100 also has an arc surface.
In one embodiment of the present invention, referring to fig. 2, the adsorption jig 1 is U-shaped, the adsorption jig 1 has a U-shaped cavity therein, and the first adsorption surface 11, the second adsorption surface 12 and the third adsorption surface 13 are cavity walls of the U-shaped cavity. The third adsorption surface 13 may be a bottom wall of a U-shaped cavity, the first adsorption surface 11 and the second adsorption surface 12 may be side walls of the U-shaped cavity, and the adsorption holes 15 may be disposed at opposite side walls of the third adsorption surface 13 to facilitate connection with the flexible pipe 4. The first suction surface 11 and the third suction surface 13 can be smoothly connected to each other, and the second suction surface 12 and the third suction surface 13 can be smoothly connected to each other.
In one embodiment of the present invention, please refer to fig. 1, the automatic dust removing mechanism for trimming film material further includes a filter 2, the filter 2 is disposed between the adsorption jig 1 and the negative pressure source 3, the filter 2 is used for filtering the foreign matters adsorbed from the trimming position of the film material 100, and preventing the foreign matters from entering into the negative pressure source 3. The type of the filter 2 is not limited herein, and the filter 2 can be replaced after long-term use to ensure the adsorption capacity of the automatic dust removing mechanism.
Optionally, referring to fig. 1, the adsorption jig 1, the filter 2 and the negative pressure source 3 are sequentially connected through a flexible pipe 4. So, can set up negative pressure source 3, filter 2 in comparatively reasonable place, particularly, be provided with flexible pipeline 4 between absorption tool 1 and the filter 2, also be provided with flexible pipeline 4 between filter 2 and the negative pressure source 3.
In other embodiments, the suction jig 1 and the filter 2 may be directly connected, and the filter 2 and the negative pressure source 3 may be directly connected.
Wherein, a regulating valve and a negative pressure meter are arranged on a flexible pipeline 4 connecting the negative pressure source 3 and the filter 2. The regulating valve is used for regulating the air pressure, and the generated air pressure can be regulated according to the distance between the cut edge of the membrane material 100 and the first adsorption surface 11 and the second adsorption surface 12, the cleanliness requirement of the membrane material 100 and the like. The negative pressure gauge is used for displaying the air pressure, so that an operator can clearly know the air pressure value in the existing automatic dust removal mechanism.
The utility model discloses an in one of them embodiment, membrane material side cut automatic dust removal mechanism still includes ultrasonic cleaner, and ultrasonic cleaner is used for clearing up burr, dust, greasy dirt etc. on the membrane material 100 side cut. The ultrasonic cleaning machine comprises a cleaning tank, a transducer and an ultrasonic generator, wherein liquid is arranged in the cleaning tank, the ultrasonic generator sends out a high-frequency oscillation signal, the high-frequency oscillation signal is converted into high-frequency mechanical vibration through the transducer and is transmitted to the liquid in the cleaning tank, and when the cut edge of the membrane material 100 is positioned in the liquid, the cut edge of the membrane material 100 can be cleaned; non-contact ultrasonic waves and cleaning devices without cleaning fluids may also be employed. Specifically, after the edge of the film material 100 is cleaned by the ultrasonic cleaner, the edge of the film material 100 is cleaned again by the adsorption jig 1 and the negative pressure source 3; or the adsorption jig 1 and the negative pressure source 3 can be adopted to clean the edge of the membrane material 100, and then the ultrasonic cleaner is adopted to clean the edge of the membrane material 100 again.
The utility model discloses an in one of them embodiment, membrane material side cut automatic dust removal mechanism still includes prevents static ion fan, prevents that static ion fan has outstanding static performance, can prevent electrostatic pollution and destruction, itself also has the function of preventing static, and it has characteristics such as small, light in weight, simple to operate, and it is obvious to add to prevent static and dust removal effect, and suitable place is extensive. The air outlet direction of the anti-static ion fan can be a fixed direction, and foreign matters can be blown to a position far away from the film material 100. Specifically, the method can be implemented by cleaning the cut edge of the membrane material 100 by adopting an anti-static ion blower, and then cleaning the cut edge of the membrane material 100 again by using the adsorption jig 1 and the negative pressure source 3; or the adsorption jig 1 and the negative pressure source 3 can be adopted to clean the cut edge of the membrane material 100, and then the anti-static ion blower is adopted to clean the cut edge of the membrane material 100 again.
Referring to fig. 3, the present invention further provides a film trimming apparatus, which includes the automatic film trimming dust removing mechanism in any of the above embodiments.
The utility model provides a membrane material side cut device has adopted foretell membrane material side cut automatic dust removal mechanism, including negative pressure source 3 and absorption tool 1, it has respectively towards first adsorption plane 11 and the second adsorption plane 12 of membrane material 100 positive and negative to adsorb tool 1, and has all seted up negative pressure hole 14 on first adsorption plane 11 and the second adsorption plane 12 for smear metal on the membrane material 100 was cut edge, dust etc. get into the absorption hole 15 that adsorbs tool 1 through negative pressure hole 14, thereby under the negative pressure effect, get rid of smear metal, dust etc. The adsorption jig 1 and the negative pressure source 3 are adopted for dust removal in a matched mode, and the adsorption jig does not need to be in edge cutting contact with the membrane material 100, so that the surface of the membrane material 100 cannot be damaged or scratched, and the problem of poor dust removal effect and the like cannot occur when the adsorption jig is used for a long time.
In one embodiment of the present invention, referring to fig. 3, the film material edge cutting device further includes a conveying mechanism, an edge cutting mechanism, and a winding mechanism 200. The conveying mechanism is used for conveying the film material 100, the film material 100 is enabled to stably translate, the edge cutting structure is used for cutting the edge of the film material 100, the width of the film material 100 is enabled to be uniform, and after the edge of the film material 100 is cut, the cut waste film is rolled by the rolling mechanism 200, so that the waste film is prevented from influencing the normal conveying of the film material 100. Specifically, in the process of transporting the film material 100 by the transporting mechanism, the edge cutting mechanism synchronously cuts the film material 100, the winding mechanism 200 synchronously winds the waste film, and the automatic film material edge cutting dust removing mechanism synchronously removes the edge of the film material 100. The positions of the edge cutting mechanism, the coiling mechanism 200 and the automatic film material edge cutting and dust removing mechanism are kept still, and the edges of the film materials 100 can be cut off and subjected to dust removal through continuous translation of the film materials 100. The conveying mechanism can be composed of a motor, a synchronizing wheel, a conveyor belt and the like, the edge cutting mechanism can be composed of a cylinder, a cutter and the like, and the coiling mechanism can be composed of a motor, a roll shaft and the like.
In one embodiment of the present invention, please refer to fig. 3, the number of the automatic dust removing mechanism for film edge cutting is two, and the two automatic dust removing mechanisms are respectively disposed at the two edge cutting positions of the film 100, so as to respectively remove dust from the two edge cutting positions of the film 100. Two automatic dust removal mechanisms of membrane material side cut can share same negative pressure source 3, promptly, two adsorb tool 1 and same negative pressure source 3 intercommunication.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a membrane material side cut automatic dust removal mechanism for remove dust to the side cut of membrane material, its characterized in that: including the negative pressure source and with the absorption tool of negative pressure source intercommunication, it is used for setting up to adsorb the tool the side cut department of membrane material, it has and is used for towards to adsorb the tool the positive first adsorption plane of membrane material and be used for towards the second adsorption plane of membrane material reverse side, negative pressure hole has all been seted up on first adsorption plane with the second adsorption plane, adsorb the tool still seted up with the adsorption hole of negative pressure source intercommunication, each negative pressure hole all communicate to the adsorption hole.
2. The automatic dust removal mechanism for film trimming of claim 1, characterized in that: the adsorption jig is also provided with a third adsorption surface facing the section of the membrane material, the third adsorption surface is provided with the negative pressure hole, and the first adsorption surface, the third adsorption surface and the second adsorption surface are sequentially connected.
3. The automatic dust removal mechanism for film trimming of claim 2, characterized in that: the adsorption jig is U-shaped, the adsorption jig is provided with a U-shaped cavity for inserting the trimming edge of the membrane material, and the first adsorption surface, the second adsorption surface and the third adsorption surface are cavity walls of the U-shaped cavity.
4. The automatic dust removal mechanism for film trimming of claim 1, characterized in that: the automatic dust removal mechanism of membrane material side cut still includes the filter, the filter set up in adsorb the tool with between the negative pressure source.
5. The automatic dust removal mechanism for film trimming of claim 4, wherein: adsorb the tool the filter with the negative pressure source connects gradually through flexible line, with the negative pressure source is connected be provided with the governing valve that is used for adjusting atmospheric pressure and be used for showing the negative pressure table of atmospheric pressure on the flexible line.
6. The automatic dust removing mechanism for the film material trimming of any one of claims 1 to 5, wherein: the automatic membrane material edge cutting dust removal mechanism further comprises an ultrasonic cleaning machine used for cleaning the membrane material edge cutting.
7. The automatic dust removing mechanism for the film material trimming of any one of claims 1 to 5, wherein: the automatic film material edge cutting dedusting mechanism further comprises an anti-static ion fan used for cleaning the film material edge cutting.
8. The automatic dust removing mechanism for the film material trimming of any one of claims 1 to 5, wherein: the first adsorption surface is provided with a section of arc-shaped surface close to the middle part of the membrane material, or/and the second adsorption surface is provided with a section of arc-shaped surface close to the middle part of the membrane material.
9. Membrane material side cut device, its characterized in that: the automatic dust removal mechanism for the film material trimming comprises the automatic dust removal mechanism for the film material trimming of any one of claims 1 to 8.
10. The film trimming apparatus of claim 9, wherein: the film material edge cutting device further comprises a conveying mechanism for conveying the film material, an edge cutting mechanism for cutting the edge of the film material and a coiling mechanism for coiling the cut waste film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344585.1U CN218428710U (en) | 2022-09-02 | 2022-09-02 | Automatic dust removal mechanism for film trimming and film trimming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344585.1U CN218428710U (en) | 2022-09-02 | 2022-09-02 | Automatic dust removal mechanism for film trimming and film trimming device |
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| Publication Number | Publication Date |
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| CN218428710U true CN218428710U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222344585.1U Active CN218428710U (en) | 2022-09-02 | 2022-09-02 | Automatic dust removal mechanism for film trimming and film trimming device |
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| CN (1) | CN218428710U (en) |
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2022
- 2022-09-02 CN CN202222344585.1U patent/CN218428710U/en active Active
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