CN219337919U - Conveying device for paperboard cutting machine - Google Patents
Conveying device for paperboard cutting machine Download PDFInfo
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- CN219337919U CN219337919U CN202320557807.XU CN202320557807U CN219337919U CN 219337919 U CN219337919 U CN 219337919U CN 202320557807 U CN202320557807 U CN 202320557807U CN 219337919 U CN219337919 U CN 219337919U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to a transport device for a cardboard cutting machine, comprising: the corrugated board comprises a transportation board surface, a rotating mechanism and N transportation rotating rollers, wherein N is an integer greater than or equal to 3, and the transportation board surface is used for placing corrugated boards; the N transport rotating rollers are arranged below the transport plate surface and are tangent to the transport plate surface; the upper part of the transportation board surface is used for arranging a transverse cutting knife and a longitudinal cutting knife, and the two ends of the transportation board surface are respectively used for feeding and discharging; the rotating shaft of the rotating mechanism is in transmission connection with the transport rotating rollers through a transmission belt, the rotating state of the transport rotating rollers is controlled, and N transport rotating rollers are mutually linked. According to the scheme provided by the utility model, the automatic transportation of the paperboard in the paperboard cutting machine is realized, meanwhile, the transportation device can avoid the damage of the cutting mechanism to the paperboard, the automation degree of the paperboard cutting machine is improved, and the maintenance cost of the paperboard cutting machine is reduced.
Description
Technical Field
The utility model relates to the technical field of lithium battery cell preheating and baking equipment, in particular to a conveying device for a paperboard cutting machine.
Background
With the development of science and technology, paper made as a carrier of text content has been derived from paper types such as offset paper, paperboard and kraft paper, wherein paperboard is widely used in packaging, logistics, printing and decoration industries, and in order to meet the size requirement of various industries on the paperboard, the produced paperboard needs to be processed for a second time, and a large piece of paperboard is cut into the required paperboard size.
The processing flow of cardboard in the cardboard cutting machine is material loading, cutting and ejection of compact, in order to realize the automatic cutout of cardboard cutting machine to the cardboard, no matter what processing flow is in to the cardboard, all need take the cardboard to next processing flow department through conveyer, traditional cardboard cutting machine adopts crawler-type conveyer to transport the cardboard more, although the device has realized the transportation to the cardboard, but to a cardboard cutting machine that can carry out vertical and horizontal cutting simultaneously, crawler-type conveyer is damaged by cutting mechanism easily, automatic cutout machine's maintenance cost has been improved, perhaps need regard as the parting line with the cutting knife, set up the conveyer of a plurality of crawler-types, automatic cutout machine's manufacturing cost and maintenance cost have been improved.
For example, chinese patent publication No. CN105881611a, entitled "paper board cutting device", specifically, in order to realize transportation of paper board in the cutting device, a conveyor belt is disposed below the longitudinal cutter and the transverse cutter in the cutting device, the paper board is placed on the conveyor belt after being gripped by a feeding manipulator, the conveyor belt moves the paper board to a press roll for compacting the paper board, then the conveyor belt sends the paper board to the transverse cutter for transverse cutting, the next paper board is sent to the longitudinal cutter for cutting, and finally the paper board is sent to a blanking groove, the conveyor belt completes transportation and conveying of the paper board between different processing flows in the cutting machine, so that the cutting device can realize automatic cutting of the paper board, but in order to avoid the contact of the conveyor belt with the longitudinal cutter in the cutting process, a certain safety distance exists between the longitudinal cutter and the conveyor belt, which can cause problems of partial adhesion or burr occurrence of the paper board after cutting, and the quality of products is reduced.
Therefore, how to automatically transport the paper board in the paper board cutting machine is a technical problem that needs to be solved by the current technicians.
Disclosure of Invention
In order to overcome the problems in the related art, the utility model provides the conveying device for the paperboard cutting machine, which can automatically convey the paperboard in the paperboard cutting machine, improves the automation degree of the paperboard cutting machine and reduces the loss of manpower and time cost.
To achieve the above object, the present utility model provides a transport device for a paperboard cutting machine, comprising:
the corrugated board comprises a transportation board surface, a rotating mechanism and N transportation rotating rollers, wherein N is an integer greater than or equal to 3, and the transportation board surface is used for placing corrugated boards; the N transport rotating rollers are arranged below the transport plate surface and are tangent to the transport plate surface; the upper part of the transportation board surface is used for arranging a transverse cutting knife and a longitudinal cutting knife, and the two ends of the transportation board surface are respectively used for feeding and discharging; the rotating shaft of the rotating mechanism is in transmission connection with the transport rotating rollers through a transmission belt, the rotating state of the transport rotating rollers is controlled, and N transport rotating rollers are mutually linked.
Preferably, the transporting roller comprises a rotating roller core and a contact roller, the contact roller is sleeved on the rotating roller core, the length of the rotating roller core is larger than that of the contact roller, the contact roller is made of polyurethane material, and the surface of the contact roller is provided with patterns.
Preferably, the conveyor belt further comprises a roller supporting structure, wherein the roller supporting structure is respectively fixed under the N conveying rollers, and is positioned in the middle of the conveying rollers, and the roller supporting structure is in sliding connection with the conveying rollers.
Preferably, the roller supporting structure comprises a fixed supporting plate and a plurality of supporting pulleys, wherein the fixed supporting plate is perpendicular to the transportation plate surface, and the supporting pulleys are respectively arranged on two plate surfaces of the fixed supporting plate; the supporting pulleys are hinged with the fixed support plate, and a plurality of the supporting pulleys are tangential with the conveying rotating roller.
Preferably, the rotating mechanism comprises a driving motor and a belt pulley, the belt pulleys are respectively fixed at the same tail ends of the N conveying rotating rollers, the driving motor and the belt pulley are arranged on the same surface, and a rotating shaft of the driving motor is connected with the belt pulley through a transmission belt.
Preferably, the rotating mechanism further comprises a plurality of tensioning wheels, the plurality of tensioning wheels are arranged between the driving motor and the belt pulley, and the plurality of tensioning wheels are respectively used for adjusting the tightness degree of the driving belt.
The technical scheme provided by the utility model can comprise the following beneficial effects:
in the technical scheme, the corrugated board is placed on the transportation board by arranging the transportation board surface, the rotating mechanism and 4 transportation rotating rollers, so that the 4 transportation rotating rollers are arranged below the transportation board surface, and the 4 transportation rotating rollers are tangent to the transportation board surface; meanwhile, a transverse cutting knife and a longitudinal cutting knife are arranged above the conveying plate surface, two ends of the conveying plate surface are respectively used for feeding and discharging, a transmission belt is controlled to drive through a rotating shaft of a rotating mechanism, then 4 conveying rotating rollers are driven to rotate through the transmission belt, the rotating state of the conveying rotating rollers is controlled through the rotating mechanism, and the connection and the transmission of the mutual linkage of the 4 conveying rotating rollers are realized; for example, when the paperboard cutting machine starts to operate, the rotating mechanism synchronously controls the 4 transport rotating rollers to rotate in the same direction and at the same speed, the paperboard moves from the corresponding transport roller in the feeding mechanism to the corresponding transport roller of the transverse cutting mechanism, and when the paperboard just moves to the corresponding transport roller of the longitudinal cutting mechanism, the transverse cutting knife completes cutting of the paperboard, so that the paperboard after being transversely cut can be driven to move by the transport roller corresponding to the longitudinal cutting knife to perform longitudinal cutting, the paperboard after being longitudinally cut reaches one end of a transport plate surface, the transport plate surface is driven to move by the transport roller, and then the cut paperboard is driven to leave the transport plate surface, and automatic transport of the paperboard is realized; according to the scheme, the plurality of conveying rollers are respectively arranged at different flow mechanisms of the paperboard cutting machine, and simultaneously, all the conveying rollers are synchronously controlled to rotate by the rotating mechanism, so that all flow mechanisms in the paperboard cutting machine are connected, automatic conveying of the paperboard in the paperboard cutting machine is realized, the automation degree of the paperboard cutting machine is improved, and the waste of manpower and time cost is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 is a schematic structural view of a transportation device according to an embodiment of the present utility model.
Fig. 2 is a schematic view of a transport roller according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a roller support structure according to an embodiment of the present utility model.
In the figure: the conveying board surface 1, the rotating mechanism 2, the driving motor 20, the belt pulley 21, the tensioning wheel 22, the conveying rotating roller 3, the rotating roller core 30, the contact rotating roller 31, the rotating roller supporting structure 4, the fixed support plate 40 and the supporting pulley 41.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model. Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It will be understood that when an element is referred to as being "mounted" 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.
In the description of the present utility model, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the prior art, the processing flow of cardboard in the cardboard cutting machine is material loading, cutting and ejection of compact, in order to realize the automatic cutout of cardboard cutting machine to the cardboard, no matter the cardboard is in which processing flow, all need take the cardboard to next processing flow department through conveyer, traditional cardboard cutting machine adopts crawler-type conveyer to transport the cardboard more, although the device has realized the transportation to the cardboard, but to a cardboard cutting machine that can carry out vertical and horizontal cutting simultaneously, crawler-type conveyer is damaged by cutting mechanism easily, the maintenance cost of automatic cutout machine has been improved, perhaps need regard the cutting knife as the parting line, set up a plurality of crawler-type conveyer, the manufacturing cost and the maintenance cost of automatic cutout machine have been improved.
In view of the above problems, an embodiment of the present utility model provides a transporting device for a cardboard cutting machine, where when the transporting device is operated, a rotating mechanism can synchronously control rotation of all transporting rollers, so as to connect each flow mechanism in the cardboard cutting machine, and enable cardboard to be transported automatically in the cardboard cutting machine.
The following describes the technical scheme of the embodiment of the present utility model in detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, the transport device includes:
the corrugated board comprises a transportation board surface 1, a rotating mechanism 2 and N transportation rotating rollers 3, wherein N is an integer greater than or equal to 3, and the transportation board surface 1 is used for placing corrugated boards; the N transport rotating rollers 3 are arranged below the transport plate surface 1, and the N transport rotating rollers 3 are tangent to the transport plate surface 1; the upper part of the transportation board surface 1 is used for arranging a transverse cutting knife and a longitudinal cutting knife, and the two ends of the transportation board surface 1 are respectively used for feeding and discharging; the rotation shaft of the rotation mechanism 2 is in transmission connection with the transport rotation rollers 3 through a transmission belt, the rotation state of the transport rotation rollers 3 is controlled, and N transport rotation rollers 3 are in linkage with each other.
Specifically, the transporting roller 3 comprises a rotating roller core 30 and a contact roller 31, the contact roller 31 is sleeved on the rotating roller core 30, the length of the rotating roller core 30 is larger than that of the contact roller 31, the contact roller 31 is made of polyurethane material, and the surface of the contact roller 31 is provided with patterns.
Specifically, still include the roller bearing structure 4, roller bearing structure 4 is fixed respectively N transport roller 3 under, just roller bearing structure 4 is located transport roller 3's middle part, roller bearing structure 4 with transport roller 3 sliding connection.
Specifically, the roller supporting structure 4 includes a fixed supporting plate 40 and a plurality of supporting pulleys 41, the fixed supporting plate 40 is perpendicular to the transportation plate surface 1, and the plurality of supporting pulleys 41 are respectively disposed on two plate surfaces of the fixed supporting plate 40; the supporting pulley 41 is hinged with the fixed support plate 40, and the supporting pulley 41 is tangential with the conveying roller 3.
Specifically, the rotating mechanism 2 includes a driving motor 20 and a belt pulley 21, the belt pulleys 21 are respectively fixed at the same ends of the N transport rotating rollers 3, the driving motor 20 and the belt pulley 21 are disposed at the same surface, and a rotating shaft of the driving motor 20 is connected with the belt pulley 21 through transmission by the transmission belt.
Specifically, the rotating mechanism 2 further includes a plurality of tensioning wheels 22, the plurality of tensioning wheels 22 are all disposed between the driving motor 20 and the belt pulley 21, and the plurality of tensioning wheels 22 are respectively used for adjusting tightness degree of the driving belt.
Example 1
In this embodiment, in order to realize automatic transportation of the cardboard in the cardboard cutting machine, the present embodiment provides a transportation device, specifically, by setting a transportation board surface, a rotation mechanism and 4 transportation rollers on the transportation device, and placing the corrugated cardboard on the transportation board surface, the 4 transportation rollers are all set below the transportation board surface, and the 4 transportation rollers are all tangent to the transportation board surface; simultaneously set up horizontal cutting knife and vertical cutting knife in the top of transportation face, the both ends of transportation face are used for material loading and unloading respectively, and the axis of rotation control drive belt through utilizing slewing mechanism is transmitted, then drives 4 transportation roller through the drive belt and rotates, and the rethread slewing mechanism control transportation roller's rotation state realizes carrying out the connection and the transmission of mutual linkage to 4 transportation roller.
For example, when the paperboard cutting machine starts to operate, the rotating mechanism synchronously controls the 4 transport rotating rollers to rotate in the same direction and at the same speed, the paperboard moves from the corresponding transport roller in the feeding mechanism to the corresponding transport roller of the transverse cutting mechanism, and when the paperboard just moves to the corresponding transport roller of the longitudinal cutting mechanism, the transverse cutting knife completes cutting of the paperboard, so that the paperboard after being transversely cut can be driven to move by the transport roller corresponding to the longitudinal cutting knife to perform longitudinal cutting, the paperboard after being longitudinally cut reaches one end of a transport plate surface, the transport plate surface is driven to move by the transport roller, and then the cut paperboard is driven to leave the transport plate surface, and the automatic transport of the paperboard is realized; according to the scheme, the plurality of conveying rollers are respectively arranged at different flow mechanisms of the paperboard cutting machine, and simultaneously, all the conveying rollers are synchronously controlled to rotate by the rotating mechanism, so that all flow mechanisms in the paperboard cutting machine are connected, automatic conveying of the paperboard in the paperboard cutting machine is realized, the automation degree of the paperboard cutting machine is improved, and the waste of manpower and time cost is reduced.
Example two
In the embodiment, in order to realize synchronous control of all the transport rollers, specifically, a driving motor and a belt pulley are arranged on a rotating mechanism, wherein the belt pulleys are respectively fixed at the same tail ends of the 4 transport rollers, the driving motor and the belt pulley are arranged on the same surface, and finally, the driving motor is in meshed connection with the belt pulley through a belt; when the transport mechanism operates, the driving end of the driving motor rotates, and the belt is utilized to drive all the belt pulleys to rotate in the same direction and at the same speed, so that the paper board placed on the transport board surface can be transported stably, and meanwhile, the single driving motor serves as a power output end, so that the production cost of the paper board cutting machine is reduced, and the energy consumption in the operation process of the transport device is reduced.
It should be noted that, in order to further explain how the conveyer steadily transports the cardboard, specifically, still be provided with 3 take-up pulleys on the slewing mechanism, all set up 3 take-up pulleys between driving motor and belt pulley, utilize the take-up pulley to adjust the elasticity degree of the belt of connecting driving motor and belt pulley to can avoid the belt to drop or smooth tooth because of not hard up reason when removing, cause 4 transport roller to appear stalling or partial inconsistent problem of rotation rate.
Example III
In this embodiment, in order to avoid slipping between the cardboard and the transporting roller, specifically, the transporting roller is composed of a rotating roller core and a contacting roller, the contacting roller is sleeved on the rotating roller core, and the length of the rotating roller core is made longer than that of the contacting roller, wherein the contacting roller is composed of polyurethane material, and the surface of the contacting roller is provided with patterns; the rotating roller core can provide support, and inputs rotating power for the transporting roller, and the contact roller is made of polyurethane materials, and simultaneously, patterns are added on the surface, so that the friction force on the surface of the transporting roller can be increased, and slipping between the paperboard and the transporting roller is avoided.
It is worth to say that, in order to lighten the burden of the rotating roller core support, the conveying device is also provided with rotating roller supporting structures, the rotating roller supporting structures are respectively fixed below 4 conveying rotating rollers, the rotating roller supporting structures are positioned in the middle of the conveying rotating rollers, the rotating roller supporting structures are composed of fixed supporting plates and 4 supporting pulleys, the 4 supporting pulleys are respectively arranged on two plate surfaces of the fixed supporting plates, meanwhile, the supporting pulleys are hinged with the fixed supporting plates, and finally the supporting pulleys are tangent with the conveying rotating rollers; because the length of transportation commentaries on classics roller is longer, the burden that the both ends of rotor core supported is very big, after long-term operation, can be very big to the both ends wearing and tearing of rotor core, transportation commentaries on classics roller also is difficult to keep straightly simultaneously, the roller bearing structure who sets up in the centre of transportation commentaries on classics roller can alleviate the burden at rotor core both ends, the supporting pulley is tangent with the transportation commentaries on classics roller simultaneously to sliding connection can avoid the roller bearing structure to exert an influence to the rotation of transportation commentaries on classics roller, has promoted the life of transportation commentaries on classics roller, has reduced conveyer's maintenance cost.
The aspects of the present utility model have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the present utility model may be sequentially adjusted, combined and pruned according to actual needs, and the structure in the apparatus of the embodiment of the present utility model may be combined, divided and pruned according to actual needs.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (6)
1. A transport device for a paperboard cutting machine, comprising:
the corrugated board comprises a transportation board surface, a rotating mechanism and N transportation rotating rollers, wherein N is an integer greater than or equal to 3, and the transportation board surface is used for placing corrugated boards;
the N transport rotating rollers are arranged below the transport plate surface and are tangent to the transport plate surface; the transverse cutting knife and the longitudinal cutting knife are arranged above the conveying plate surface, and the two ends of the conveying plate surface are respectively used for feeding and discharging; the rotating shaft of the rotating mechanism is in transmission connection with the transport rotating rollers through a transmission belt, the rotating states of the transport rotating rollers are controlled, and N transport rotating rollers are in linkage with each other.
2. A transport device for a board cutter according to claim 1, wherein the transport roller comprises a rotating roller core and a contact roller, the contact roller is sleeved on the rotating roller core, the length of the rotating roller core is longer than that of the contact roller, the contact roller is made of polyurethane material, and the surface of the contact roller is provided with a pattern.
3. The transport device for a paperboard cutting machine according to claim 1, further comprising a roller support structure, wherein the roller support structures are respectively fixed under N transport rollers, and the roller support structures are located at the middle of the transport rollers, and the roller support structures are slidably connected with the transport rollers.
4. A transport device for a board cutter according to claim 3, wherein the roller support structure comprises a fixed support plate and a plurality of support pulleys, the fixed support plate is perpendicular to the transport plate surface, and the plurality of support pulleys are respectively arranged on two plate surfaces of the fixed support plate; the supporting pulleys are hinged with the fixed support plates, and the supporting pulleys are tangential to the conveying rotating rollers.
5. A transporting device for a paper board cutting machine according to claim 1, wherein the rotating mechanism comprises a driving motor and a belt pulley, the belt pulleys are respectively fixed at the same ends of the N transporting rollers, the driving motor and the belt pulley are arranged on the same surface, and a rotating shaft of the driving motor is connected with the belt pulley through a transmission belt.
6. The transport device for a paperboard cutting machine according to claim 5, wherein the rotating mechanism further comprises a plurality of tensioning wheels, the plurality of tensioning wheels are arranged between the driving motor and the belt pulley, and the plurality of tensioning wheels are respectively used for adjusting tightness of the transmission belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557807.XU CN219337919U (en) | 2023-03-21 | 2023-03-21 | Conveying device for paperboard cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557807.XU CN219337919U (en) | 2023-03-21 | 2023-03-21 | Conveying device for paperboard cutting machine |
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| Publication Number | Publication Date |
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| CN219337919U true CN219337919U (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320557807.XU Active CN219337919U (en) | 2023-03-21 | 2023-03-21 | Conveying device for paperboard cutting machine |
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| Country | Link |
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| CN (1) | CN219337919U (en) |
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- 2023-03-21 CN CN202320557807.XU patent/CN219337919U/en active Active
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