An automatic wire mesh coiling machine
By designing a hook net automatic winding machine including a bracket body, a mesh conveyor table, a shaft device and a drive device, the adjustable friction force of the winding space and the saw-tooth disk is used to solve the problem of large and loose net rolling in the prior art, and the effect of tight winding and volume optimization is achieved.
Patent Information
- Application Number
- CN202010837800.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-19
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2040-08-19
AI Technical Summary
The existing hook flower net rolling method makes the net rolls large and loose, making it difficult to effectively tighten.
An automatic web coiling machine for hooking flowers is designed, including a bracket body, a mesh conveyor table, a shaft device and a driving device. By providing the first active rotation shaft, the second active rotation shaft and the driven rotation shaft to form an adjustable winding space, and using the friction and pressure of the saw-tooth disc and the limit disc, the tight winding of the net coil is achieved.
It effectively solves the problem of large volume of the net roll, realizes tight coiling of the net roll, and makes the outer surface more compact.
Smart Images

Figure CN111847038B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of chain link fence equipment, and particularly to an automatic chain link fence coiling machine. Background Art
[0002] A chain link fence is a kind of metal net formed by multiple oval spiral steel wires interlacing with each other. Its forming principle is as Figure 2 shown: The straight steel wire advances and rotates simultaneously under the drive of a forming die. While forming a wavy spiral line, it also just hooks into the arm bend of the previous wavy spiral steel wire. In this way, it circulates and weaves into a complete chain link fence. After the chain link fence is woven, it needs to be coiled into a cylindrical shape for convenient transportation and storage. Currently, there are two coiling methods: One is manual coiling, where the chain link fence is coiled into a cylindrical shape from one end, but the coiled net roll is relatively loose; the other is machine coiling, such as the technical solution with the patent number CN110104476A, where the chain link fence is sent into a coiling table through a flat belt and coiled without a core under the drive of a motor. However, the volume of the coiled net roll after using this machine coiling is not significantly different from that of manual coiling; that is, the existing common coiling methods all have the problems that the coiled net roll is loose and has a large volume after coiling. Summary of the Invention
[0003] In view of this, the purpose of the present application is to provide an automatic chain link fence coiling machine, which can solve the problem of the large volume of the coiled net roll under the existing coiling methods.
[0004] To achieve the above technical purpose, the present application provides an automatic chain link fence coiling machine, including a support main body, a mesh sheet conveying table, a rotating shaft device, and a driving device;
[0005] The mesh sheet conveying table is installed on the support main body and is used for laying the chain link fence to be coiled;
[0006] The rotating shaft device is installed on the support main body and includes a first driving rotating shaft, a second driving rotating shaft, and a driven rotating shaft that are arranged in parallel;
[0007] Both the first driving rotating shaft and the driven rotating shaft are arranged above the mesh sheet conveying table;
[0008] The second driving rotating shaft is arranged below the mesh sheet conveying table and forms an adjustable coiling space with the first driving rotating shaft and the driven rotating shaft;
[0009] A longitudinal guide rail is provided on the support main body, and both ends of the driven rotating shaft are rotatably installed on the longitudinal guide rail;
[0010] The driving device is installed on the support main body and is used for driving the rotating shaft device to rotate;
[0011] The first active rotating shaft, the second active rotating shaft and the driven rotating shaft are all movably sleeved with a sawtooth disk that contacts the net roll in the adjustable winding space.
[0012] Preferably, it also includes two limit plates;
[0013] The two limiting plates are respectively installed on the two side surfaces of the sawtooth plate by tightening bolts, and the axial cross section of the limiting plate is an isosceles trapezoid;
[0014] The sum of the isosceles trapezoidal bottom angles of the two limiting plates is equal to the arm angle of the chain link fence, and the length of the bottom side is equal to the diameter of the sawtooth plate.
[0015] Preferably, at least one end of the first active rotating shaft is provided with a first sprocket;
[0016] A second sprocket is provided at one end of the second driving shaft corresponding to the first sprocket;
[0017] The first sprocket is connected to the second sprocket through a first chain transmission, and the outer diameter of the first sprocket is smaller than the outer diameter of the second sprocket.
[0018] Preferably, the mesh conveying platform comprises a plurality of parallel and spaced-apart dividing strips;
[0019] The tops of the plurality of sawtooth disks on the second active rotating shaft pass through the gaps between the dividing bars.
[0020] Preferably, the mesh conveying platform comprises a front conveying section, a middle conveying section and a rear conveying section, which are connected in sequence;
[0021] The middle conveying section and the front conveying section are arranged to be inclined toward each other and distributed in a triangular shape;
[0022] The first driving rotating shaft and the driven rotating shaft are both arranged above the rear end conveying section;
[0023] The second active rotating shaft is arranged below the rear end conveying section.
[0024] Preferably, the middle conveying section is connected to the front conveying section via a third active rotating shaft;
[0025] The third active rotating shaft is rotatably mounted on the bracket body, and is used to transmit the chain link fence to be rolled up from the front conveying section to the rear conveying section.
[0026] Preferably, it also includes a flip drive;
[0027] One end of the rear conveying section away from the middle conveying section is hinged to the bracket body;
[0028] The flipping driver is installed on the bracket main body, and its driving end is connected to the rear-end conveying section, and can be used to drive the rear-end conveying section to rotate around the hinge point between itself and the bracket main body.
[0029] Preferably, the flipping driver is specifically a cylinder support shaft;
[0030] The driving device is a rotating motor, and a third sprocket is sleeved on the output shaft, and it is arranged below the wire mesh conveying table;
[0031] A fourth sprocket is also sleeved on the second driving rotating shaft;
[0032] The fourth sprocket is in transmission connection with the third sprocket through a second chain.
[0033] Preferably, limit screws are arranged on the first driving rotating shaft, the second driving rotating shaft and the driven rotating shaft.
[0034] Preferably, the longitudinal guide rail is an arc-shaped guide rail.
[0035] It can be seen from the above technical solutions that in this application, a winding space is formed by arranging a first driving rotating shaft, a second driving rotating shaft and a driven rotating shaft arranged on the guide rail, so that the wire mesh roll can be wound in the winding space. During the process of the continuously increasing diameter, the driven rotating shaft continuously applies pressure to the wire mesh roll, and at the same time, the size of the winding space can be adjusted by moving outward along the longitudinal guide rail, ensuring that the outer surface of the wire mesh roll is more compact after the entire wire mesh winding is completed, thereby solving the problem of the large volume of the wire mesh roll in the existing wire mesh winding method. Description of the Drawings
[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0037] Figure 1 It is a schematic diagram of the overall structure of a chain-link fence automatic wire mesh winding machine in the embodiments provided in the present application;
[0038] Figure 2 It is a schematic diagram of the formation principle of the chain-link fence in the embodiments provided in the present application;
[0039] Figure 3 It is a schematic diagram of the internal structure of a chain-link fence automatic wire mesh winding machine in the embodiments provided in the present application;
[0040] Figure 4 It is an isometric view of a chain-link fence automatic wire mesh winding machine in the embodiments provided in the present application;
[0041] Figure 5 This is an enlarged view of the sawtooth disk of an automatic wire mesh coiling machine for chain link fence provided in the embodiments of the present application;
[0042] Figure 6 This is an enlarged view of the driven rotating shaft of an automatic wire mesh coiling machine for chain link fence provided in the embodiments of the present application;
[0043] Figure 7 This is a schematic diagram of the wire mesh coiling process of an automatic wire mesh coiling machine for chain link fence provided in the embodiments of the present application;
[0044] Figure 8 This is an enlarged view of the bearing block of an automatic wire mesh coiling machine for chain link fence provided in the embodiments of the present application;
[0045] In the figure: front conveying section 11; middle conveying section 12; rear conveying section 13; rotating shaft device 2; driven rotating shaft 21; first driving rotating shaft 22; second driving rotating shaft 23; sawtooth disk 24; limit screw 25; bearing block 26; driving device 3; first chain 31; rotating motor 32; second chain 33; limit disk 241; sawteeth 242; tightening bolt 243; bracket main body 4; flipping driver 5. Detailed implementation manners
[0046] Next, the technical solutions of the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the embodiments of the present application.
[0047] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0048] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0049] An embodiment of the present application discloses an automatic mesh rolling machine for chain-link fence.
[0050] Please refer to Figures 1 to 3 , an embodiment provided in the embodiments of the present application includes: a mesh conveying table, a rotating shaft device 2, a driving device 3, and a support main body 4; the mesh conveying table is installed on the support main body 4 and is used for laying the chain-link fence to be wound; the rotating shaft device 2 is installed on the support main body 4 and includes a first driving rotating shaft 22, a second driving rotating shaft 23, and a driven rotating shaft 21 that are arranged in parallel; both the first driving rotating shaft 22 and the driven rotating shaft 21 are arranged above the mesh conveying table; the second driving rotating shaft 23 is arranged below the mesh conveying table and forms an adjustable winding space with the first driving rotating shaft 22 and the driven rotating shaft 21; a longitudinal guide rail is arranged on the support main body 4, and both ends of the driven rotating shaft 21 are rotatably installed on the longitudinal guide rail; the driving device 3 is installed on the support main body 4 and is used for driving the rotating shaft device 2 to rotate; serrated disks 24 that are in contact with the mesh roll in the adjustable winding space are movably sleeved on the first driving rotating shaft 22, the second driving rotating shaft 23, and the driven rotating shaft 21.
[0051] In this embodiment, the first driving rotating shaft 22, the second driving rotating shaft 23, and the driven rotating shaft 21 form an adjustable winding space. Technicians put the chain-link fence that has completed the initial edge curling into the winding space, and drive the winding of the chain-link fence through the frictional force of the rotation of the serrated disks 24. During the winding process, the driven rotating shaft 21 installed on the longitudinal guide rail continuously moves outward along the guide rail as the diameter of the mesh roll increases, and the mesh roll needs to bear the pressure of the driven rotating shaft 21 to expand it, so that the wound mesh roll is tighter.
[0052] Specifically, the support main body 4 is provided with two support plates. The mesh conveying table and the rotating shaft device 2 are both installed between the two support plates, and the longitudinal guide rail is arranged between the two support plates and above the mesh conveying table; the longitudinal guide rail can be set as an arc guide rail or a vertical guide rail, so that the driven rotating shaft 21 can move up and down on the guide rail and press on the winding chain-link fence.
[0053] The above is Embodiment 1 provided by the embodiments of the present application. The following is Embodiment 2 provided by the embodiments of the present application. For details, please refer to Figures 1 to 3 .
[0054] A chain link fence automatic winding machine, comprising a mesh conveying platform, a rotating shaft device 2, a driving device 3 and a bracket body 4; the mesh conveying platform is installed on the bracket body 4, and is used to lay the chain link fence to be wound up; the rotating shaft device 2 is installed on the bracket body 4, and comprises a first active rotating shaft 22, a second active rotating shaft 23 and a driven rotating shaft 21 which are arranged parallel to each other; the first active rotating shaft 22 and the driven rotating shaft 21 are both arranged above the mesh conveying platform; the second active rotating shaft 23 is arranged below the mesh conveying platform, and forms an adjustable winding space with the first active rotating shaft 22 and the driven rotating shaft 21; a longitudinal guide rail is provided on the bracket body 4, and both ends of the driven rotating shaft 21 are rotatably installed on the longitudinal guide rail; the driving device 3 is installed on the bracket body 4, and is used to drive the rotating shaft device 2 to rotate; the first active rotating shaft 22, the second active rotating shaft 23 and the driven rotating shaft 21 are all movably sleeved with a serrated disk 24 that contacts the mesh roll in the adjustable winding space.
[0055] Furthermore, a first sprocket is disposed at at least one end of the first driving shaft 22; a second sprocket is disposed at at least one end of the second driving shaft 23 corresponding to the first sprocket; the first sprocket is connected to the second sprocket via a first chain 31, and the outer diameter of the first sprocket is smaller than the outer diameter of the second sprocket.
[0056] Specifically, the first active rotating shaft 22 and the second active rotating shaft 23 are driven by chains and sprockets in the present embodiment, and the two can also be directly driven by pulleys or by gears arranged at the ends of the rotating shafts, etc., so that the first active rotating shaft 22 and the second active rotating shaft 23 can be synchronized and differentially driven; wherein, the setting that the speed of the first active rotating shaft 22 is greater than that of the second active rotating shaft 23 makes there be a speed difference between the front and rear chain link fences, which helps to roll the net more compactly.
[0057] Furthermore, the mesh conveying platform includes a plurality of parallel and spaced-apart dividing strips; the tops of the plurality of sawtooth disks 24 on the second active rotating shaft 23 pass through the gaps between the dividing strips.
[0058] Furthermore, the mesh conveyor platform includes a front conveying section 11, an intermediate conveying section 12 and a rear conveying section 13, which are connected in sequence, specifically rotatably connected; the chain link fence laid on the mesh conveyor platform is conveyed along the front conveying section 11 toward the rear conveying section 13; the intermediate conveying section 12 and the front conveying section 11 are inclined toward each other and are distributed in a triangular shape; in this embodiment, the triangular distribution refers to an equilateral triangle, that is, a state of convexity upward; the first active rotating shaft 22 and the driven rotating shaft 21 are both arranged above the rear conveying section 13; the second active rotating shaft 23 is arranged below the rear conveying section 13.
[0059] Furthermore, the middle conveying section 12 is connected to the front conveying section 11 via a third active rotating shaft; the third active rotating shaft is rotatably mounted on the bracket body to transmit the chain link fence to be rolled up from the front conveying section 11 to the rear conveying section 13.
[0060] The third active rotating shaft is provided with convex teeth for friction transmission with the chain link fence; specifically, the third active rotating shaft can also be set at other positions, such as below the connection between the middle conveying section 12 and the front conveying section 11, and contact the chain link fence by passing through the spacer bars on the mesh conveying platform through the gear plate.
[0061] Furthermore, it also includes a flip driver 5; the end of the rear end conveying section 13 away from the middle conveying section 12 is hinged to the bracket body 4; the flip driver 5 is installed on the bracket body 4, and the driving end is connected to the rear end conveying section 13, which can be used to drive the rear end conveying section 13 to rotate around the hinge between itself and the bracket body 4; specifically, the flip effect is best when the driving end of the flip driver 5 is connected to the end of the rear end conveying section 13 close to the middle conveying section 12.
[0062] When the net roll is rolled up, the rear conveying section 13 can be controlled to tilt downward by the flip driver 5, and the rolled-up chain link net roll leaves the rolling space, so that it is convenient to be taken out for the next rolling up.
[0063] Furthermore, the flip actuator 5 is specifically a cylinder support shaft, which is powered by an air pump (not shown).
[0064] Specifically, the flip driver 5 can also be a hydraulic cylinder, an electric telescopic rod, etc., which can be telescopically connected to the rear conveying section 13 so that the rear conveying section 13 can be driven to rotate by the flip driver 5;
[0065] The driving device 3 is a rotating motor 32 , which is arranged below the mesh conveying platform and has a third sprocket on the output shaft sleeve; a fourth sprocket is also sleeved on the second active rotating shaft 23 ; the fourth sprocket is connected to the third sprocket through a second chain 33 .
[0066] Similarly, the driving device 3 can also be connected to the second active rotating shaft 23 through other transmission methods such as a rotating shaft directly connected to the second active rotating shaft 23 or gear transmission, so that the driving device 3 can drive the second active rotating shaft 23 to rotate.
[0067] For further information, please refer to Figure 4 , limiting plates 241 with isosceles trapezoidal axial cross sections can be installed at both ends of the sawtooth plate 24; the sum of the isosceles trapezoidal bottom angles of the two limiting plates 241 is equal to the arm angle of the chain link fence.
[0068] Please refer to Figure 4 and Figure 5, the serrated disc 24 is further provided with serrations 242 for frictionally driving the chain-link fence; and the two limit discs 241 are fixed to the serrated disc 24 by tightening bolts 243; whether to provide the limit discs 241 for the serrated discs 24 provided on different rotating shafts can be considered according to actual needs. For example, in this embodiment, the limit discs 241 are installed on the serrated discs 24 on the first driving rotating shaft 22 and the second driving rotating shaft 23, while the limit discs 241 are not installed on the serrated disc 24 on the driven rotating shaft 21.
[0069] The chain-link fence is a kind of metal mesh formed by multiple steel wires interlocking with each other. Its forming principle is as Figure 2 shown, which is: the straight steel wire rotates while advancing under the drive of the forming die, forming a wavy spiral line, and at the same time, it just hooks into the arm bend of the previous wavy spiral line. By continuously circulating like this, a complete chain-link fence is woven. The arm bend angle of the chain-link fence described in this application refers to the angle of each chain-link fence mesh facing the direction of the serrated disc 24;
[0070] Please refer to Figure 6 , by setting the arm bend angle of the chain-link fence to be equal to the base angle of the isosceles trapezoid of the two limit discs 241, when preparing for the winding work at the beginning, the arm bends of the chain-link fence are clamped at the positions of the two limit discs 241 at both ends of the serrated disc 24, so that the serrations 242 are not easily slipped with the chain-link fence and the web roll is further tightened during the winding process.
[0071] Further, limit screws 25 are provided on the first driving rotating shaft 22, the second driving rotating shaft 23, and the driven rotating shaft 21. The serrated disc 24 is sleeved on the rotating shaft, and the limit screws 25 are used to limit the movement space of the serrated disc 24 to prevent the serrated disc 24 from shifting.
[0072] Further, the longitudinal guide rail is an arc-shaped guide rail, so that during the process of the driven rotating shaft 21 moving along the guide rail, it fits better with the web roll with an increasing outer diameter.
[0073] Further, please refer to Figure 7 , the first driving rotating shaft 22 and the second driving rotating shaft 23 are both installed on the bracket main body 4 through bearing blocks 26.
[0074] Through the above embodiments, the staff only need to lay the chain-link fence that has completed the initial hemming on the mesh conveyor table, and start the rotating motor 32 after clamping the arm bends of the chain-link fence on the limiting disc 241; the rotating motor 32 drives the second driving rotating shaft 23 to rotate through the chain 31, and then the second sprocket on the second driving rotating shaft 23 drives the first driving rotating shaft 22 to rotate. The chain-link fence is wound under the rotation of the rotating shaft in the winding space. When the diameter of the mesh roll is large enough to contact the driven rotating shaft 21, the driven rotating shaft 21 rotates and moves outwards along the longitudinal track because of the continuous increase in the diameter of the mesh roll. Since the rotation speeds of the first driving rotating shaft 22 and the second driving rotating shaft 23 are different and the resultant force at the acting point is different, the outer surface of the mesh is further tightened, thus effectively solving the problem that the mesh roll is large in volume and loose during manual operation.
[0075] It should be noted that the above are only the preferred embodiments of the present application and are not used to limit the present invention. Although the present application has been described in detail with reference to the examples, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing examples, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An automatic wire mesh coiling machine for chain-link fence, characterized in that, It includes a support body, a mesh conveying platform, a rotating shaft device, a driving device and a flip driver; The mesh conveying platform is installed in the support body and is used for laying the chain link fence to be rolled up; The rotating shaft device is installed in the bracket body, and includes a first active rotating shaft, a second active rotating shaft and a driven rotating shaft which are arranged parallel to each other; The first active rotating shaft and the driven rotating shaft are both arranged above the mesh conveying platform; The second active rotating shaft is arranged below the mesh conveying platform, and together with the first active rotating shaft and the driven rotating shaft, forms an adjustable winding space; The bracket body is provided with a longitudinal guide rail, and both ends of the driven shaft are rotatably mounted on the longitudinal guide rail; The driving device is installed in the bracket body and is used to drive the rotating shaft device to rotate; The first active rotating shaft, the second active rotating shaft and the driven rotating shaft are all movably sleeved with sawtooth disks, and each of the sawtooth disks is in contact with the net roll in the adjustable winding space; The mesh conveying platform includes a front conveying section, a middle conveying section and a rear conveying section, which are connected in sequence; The middle conveying section and the front conveying section are arranged to be inclined toward each other and distributed in a triangular shape; The first driving rotating shaft and the driven rotating shaft are both arranged above the rear end conveying section; The second active rotating shaft is arranged below the rear end conveying section; The middle conveying section is connected to the front conveying section via a third active rotating shaft; The third active rotating shaft is rotatably mounted on the bracket body, and is used to transmit the chain link fence to be rolled up from the front conveying section to the rear conveying section; One end of the rear conveying section away from the middle conveying section is hinged to the bracket body; The flip driver is installed in the support body, and the driving end is connected to the rear conveying section, and can be used to drive the rear conveying section to rotate around the hinge between the rear conveying section and the support body; The adjustable winding space is used for technicians to place the chain link fence that has completed the initial edge curling into the winding space, and then the friction force of the rotating serrated disk drives the chain link fence to be rolled up. During the winding process, the driven shaft continuously moves outward along the guide rail as the diameter of the mesh roll increases, and the mesh roll needs to withstand the pressure of the driven shaft to be stretched open.
2. The chain-link fence automatic net winding machine according to claim 1, characterized in that, Also included are two limiter plates; The two limiting plates are respectively installed on the two side surfaces of the sawtooth plate by tightening bolts, and the axial cross section of the limiting plate is an isosceles trapezoid; The sum of the isosceles trapezoidal bottom angles of the two limiting plates is equal to the arm angle of the chain link fence, and the length of the bottom side is equal to the diameter of the sawtooth plate.
3. The chain link fence automatic net rolling machine according to claim 1, characterized in that, At least one end of the first active rotating shaft is provided with a first sprocket; A second sprocket is provided at one end of the second driving shaft corresponding to the first sprocket; The first sprocket is connected to the second sprocket through a first chain transmission, and the outer diameter of the first sprocket is smaller than the outer diameter of the second sprocket.
4. The chain link fence automatic net rolling machine according to claim 1, characterized in that, The mesh conveying platform includes a plurality of parallel and spaced-apart dividing strips; The tops of the plurality of sawtooth disks on the second active rotating shaft pass through the gaps between the dividing bars.
5. The chain link fence automatic net winding machine according to claim 1, characterized in that The tilting drive is specifically a cylinder support shaft; The driving device is a rotary motor, the output shaft sleeve is provided with a third sprocket, and is arranged below the mesh conveying platform; A fourth sprocket is also sleeved on the second driving rotating shaft; The fourth sprocket is in transmission connection with the third sprocket through a second chain.
6. The chain link net automatic net rolling machine according to claim 1, wherein, Limit screws are arranged on the first driving rotating shaft, the second driving rotating shaft and the driven rotating shaft.
7. The chain link fence automatic net rolling machine according to claim 1, characterized in that, The longitudinal guide rail is an arc-shaped guide rail.
Citation Information
Patent Citations
Chain link fence rolling machine
CN110104476A
Automatic mesh rolling equipment of steel bar welding mesh pieces
CN102161142A
Rolling -up machine
CN207434662U
Automatic net coiling machine for crocheted net
CN212475456U