Non-contact forming machine and forming process for hot forming of a spiral mesh

Abstract

Non-contact forming machine and forming method for hot forming a spiral mesh, wherein the non-contact forming machine (100) comprises a conveying mechanism (1) that can rotate the spiral mesh, a heating mechanism (2) that can define a heating zone (25) for a passage of the spiral mesh, a first visual collector (51) and a second visual collector (52) located on the inlet and outlet respectively.The output side of the heating mechanism (2) is located, wherein the control device (6) receives the visual information of the spiral mesh, which is detected by the first visual collector (51) and the second visual collector (52), wherein the conveying mechanism (1) and the heating mechanism (2) are each connected to the control device (6) by lines, wherein the control device (6) can control and adjust a rotational speed of the conveying mechanism (1) and / or a mesh surface tension of the spiral mesh and / or a heating temperature of the heating mechanism (2). With the forming machine and the forming process, non-contact hot forming of the upper and lower layers of the spiral mesh can be achieved, and wherein the shrinkage area of ​​the mesh surface of the spiral mesh is controlled and wrinkling is prevented.

Description

Non-contact shaping machine and shaping method for spiral mesh heat shaping Technical Field

[0001] The invention belongs to the technical field of spiral mesh processing and manufacturing, in particular to a non-contact shaping machine and shaping method for heat shaping of spiral mesh. Background Art

[0002] Spiral mesh is manufactured through a multi-step process involving polymer monofilament winding, networking, splicing, core insertion, and shaping. Its products are widely used in industries such as industrial filtration, environmental protection, and food filtration. Heat setting is a crucial step, improving the molecular crystallinity and orientation within the spiral mesh. It also eliminates internal stress generated during processing, significantly improving the mesh's quality. Heat-set spiral mesh exhibits superior performance.

[0003] Due to the inherent shrinkage characteristics of polymer monofilaments during dry heat, spiral meshes composed of several monofilaments will also shrink when heated. However, without external force, the spiral mesh can easily shrink excessively beyond the process requirements, even causing wrinkles on the mesh surface that affect product quality. Heat rollers are typically used as heat sources to heat-set spiral meshes. The tension and friction provided by the roller surface prevent excessive shrinkage at the point of contact with the roller, completing the heat setting process.

[0004] Existing processes use contact heat setting through heated rollers. This results in uneven heating of the spiral web between the contacting and non-contacting sides. This is particularly true for thicker or multi-layered spiral webs, where the heat penetration of the heated rollers is poor. Using a dual-layer heating system (such as infrared plates, electric heating plates, or hot air boxes) combined with a tentering mechanism across the web width can effectively address this issue. However, due to the particularity of the spiral mesh structure, as shown in the schematic diagram of the spiral mesh structure in Figure 1, a connecting core wire 82 arranged along the width direction is connected in series with multiple spiral rings 81 arranged at intervals (actually connecting two rows of spiral rings 81), and the same row of spiral rings 81 arranged in parallel is filled with a core wire 83 arranged along the width direction; therefore, the spiral mesh is difficult to withstand large tension restrictions in the width direction, and therefore it is impossible to use a needle plate stretcher for forced stretching (which will cause irreversible damage to the spiral mesh surface). The spiral mesh is prone to excessive shrinkage or wrinkling in the heated area due to the lack of external force. Therefore, the non-contact method of upper and lower heating cannot be used in the spiral mesh shaping process. Therefore, the development of a shaping machine and shaping method that can perform non-contact heating of the upper and lower layers of the spiral mesh and control thermal shrinkage has become a technical problem that technical personnel in this industry urgently need to solve.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to address the problems existing in the prior art and provide a non-contact setting machine and setting method for spiral mesh heat setting. The setting machine and setting method can enable the spiral mesh to achieve upper and lower double-layer non-contact heat setting without destroying the mesh surface structure, while controlling the shrinkage of the spiral mesh surface within a certain range and preventing the mesh surface from wrinkling due to excessive shrinkage.

[0007] The purpose of the present invention is to be solved by the following technical solutions:

[0008] A non-contact setting machine for heat setting a spiral mesh, characterized in that: the non-contact setting machine includes a conveying mechanism capable of driving the spiral mesh to rotate, a heating mechanism capable of defining a heating area for the spiral mesh to pass through, a first visual collector and a second visual collector located on the inlet and outlet sides of the heating mechanism and used to collect visual information of the spiral mesh at corresponding locations, a control device receives the visual information of the spiral mesh collected by the first visual collector and the second visual collector and identifies the width, longitudinal line shape and transverse line shape of the spiral mesh at corresponding locations, the conveying mechanism and the heating mechanism are respectively connected to the control device via lines, and the control device can control and adjust the rotation speed of the conveying mechanism and / or the mesh surface tension of the spiral mesh and / or the heating temperature of the heating mechanism.

[0009] The inlet and outlet sides of the heating mechanism are respectively provided with a mesh surface regulating mechanism, which includes a first roller assembly located on the inlet side of the heating mechanism and a second roller assembly located on the outlet side of the heating mechanism. The first visual collector is located in the area between the inlet end of the heating mechanism and the first regulating roller in the first roller assembly, and the second visual collector is located in the area between the outlet end of the heating mechanism and the second regulating roller in the second roller assembly.

[0010] The first roller assembly includes a pair of parallel first guide rollers and a first adjusting roller located between the pair of first guide rollers; the spiral net sequentially contacts and passes through the upper edge of one first guide roller, the lower edge of the first adjusting roller, and the upper edge of another first guide roller along the direction of travel before entering the heating area, or the spiral net sequentially contacts and passes through the lower edge of one first guide roller, the upper edge of the first adjusting roller, and the lower edge of another first guide roller along the direction of travel before entering the heating area; the first adjusting roller controlled by the control device can press one side end surface of the spiral net and can move up and down to adjust the mesh tension of the spiral net.

[0011] The second roller assembly includes a pair of parallel second guide rollers and a second adjusting roller located between the pair of second guide rollers; the spiral net leaving the heating area sequentially contacts and passes through the upper edge of a second guide roller, the lower edge of the second adjusting roller, and the upper edge of another second guide roller along the direction of travel, or the spiral net leaving the heating area sequentially contacts and passes through the lower edge of a second guide roller, the upper edge of the second adjusting roller, and the lower edge of another second guide roller along the direction of travel; the second adjusting roller controlled by the control device can press one side end surface of the spiral net and can move up and down to adjust the mesh tension of the spiral net.

[0012] The conveying mechanism includes an active roller capable of driving the spiral net to rotate and a movable tensioning roller. The conveying mechanism 1 can tension the spiral net from the inside of the spiral net; the active roller is rotatably connected to the fixed frame and the tensioning roller is rotatably connected to the tensioning frame. The tensioning frame is set on a guide rail and can move along the setting direction of the guide rail to change the mesh tension of the spiral net; the active roller and the tensioning frame are respectively connected to a control device, which can control the rotation speed of the active roller and the position of the tensioning frame on the guide rail.

[0013] The conveying mechanism also includes a tension monitor arranged on the tensioning frame, which can measure the mesh tension of the spiral mesh and is connected to the control device by signal to transmit the measured tension value; the control device pre-stores a tension threshold and is configured such that: if the tension value monitored by the tension monitor is less than the tension threshold, the control device controls the tensioning frame to move backward.

[0014] The heating mechanism comprises an upper heater and a lower heater which are arranged opposite to each other in the vertical direction. A heating area for the spiral net to pass through is defined between the upper heater and the lower heater which extend along the width direction of the spiral net.

[0015] The outlet side of the heating area is provided with an upper temperature monitor and a lower temperature monitor corresponding to the upper heater and the lower heater respectively. The upper temperature monitor and the lower temperature monitor, both of which are connected to the control device signal, can respectively monitor the upper and lower surface temperatures of the spiral net when it passes through the heating area and transmit the measured surface temperature values ​​to the control device.

[0016] The upper heater and the lower heater are paired infrared heating devices or hot air boxes.

[0017] The control device is provided with a wrinkle judgment module and a shrinkage judgment module. The wrinkle judgment module can judge whether the spiral mesh surface is wrinkled based on the visual information collected by the first visual collector and the second visual collector respectively. Specifically, the control device receives the visual information of the spiral mesh collected by the first visual collector and the second visual collector and transmits the transverse line shape and the longitudinal line shape in the visual information to the wrinkle judgment module. The wrinkle judgment module judges whether the spiral mesh surface is wrinkled based on the transverse line shape and the longitudinal line shape; the shrinkage judgment module can judge whether the spiral mesh surface is excessively shrunk based on the visual information collected by the first visual collector and the second visual collector respectively. Specifically, the control device receives the visual information of the spiral mesh collected by the first visual collector and the second visual collector and transmits the width information in the visual information to the wrinkle judgment module. The shrinkage judgment module judges whether the spiral mesh surface is excessively shrunk based on the comparison between the rear side mesh width of the spiral mesh at the inlet side of the heating mechanism and the front side mesh width of the spiral mesh at the outlet side of the heating mechanism and the initial mesh width of the spiral mesh before heating.

[0018] The control device is connected to the production management system through an intelligent port, and the intelligent port can transmit the operating parameters of the non-contact setting machine to the corresponding production management system.

[0019] A shaping method of a non-contact shaping machine for heat shaping of a spiral mesh, characterized in that: the non-contact shaping machine used in the shaping method includes an active roller capable of driving the spiral mesh to rotate, a heating mechanism capable of non-contact heating of the spiral mesh, a pair of adjusting rollers located at the inlet and outlet sides of the heating mechanism, a first visual collector located between an adjusting roller located at the inlet side of the heating mechanism and the inlet end of the heating mechanism, and a second visual collector located between another adjusting roller located at the outlet side of the heating mechanism and the outlet end of the heating mechanism, and a control device, wherein the pair of adjusting rollers are in contact with the mesh surface of the spiral mesh and can increase or decrease the mesh surface tension of the spiral mesh by moving up and down, the spiral mesh passes through the heating mechanism from back to front, the pair of visual collectors can respectively collect visual information of the spiral mesh at corresponding positions, the control device can identify the width, longitudinal line shape and transverse line shape of the spiral mesh based on the visual information of the spiral mesh collected by the visual collectors, and the control device can control the rotation speed of the active roller, the temperature of the heating mechanism and the position of the adjusting roller;

[0020] The specific steps of this modeling method are:

[0021] S1. Provide the target width shrinkage rate S of the spiral mesh, the total number of heating times N and set the setting temperature range T n, where: the target width shrinkage rate S is the width ratio of the spiral mesh before and after the spiral mesh completes the entire heat setting process; the total heating times N is the total number of heating times of the spiral mesh in the entire heat setting process, and one heating time refers to the number of times the spiral mesh is heated in T n The heating process is completed within the temperature range, n is the number of heating times, 1≤n≤N; the setting temperature range is T n The heating temperature range corresponding to the nth heat setting of the spiral mesh;

[0022] S2, set the initial heating number n=1, and record the initial mesh width W1 of the spiral mesh before heating;

[0023] S3, heating the spiral mesh through the heating mechanism and gradually increasing the surface temperature of the spiral mesh to the setting temperature range T of the spiral mesh n Inside;

[0024] S4, the control device determines whether the mesh surface of the spiral mesh is wrinkled, if wrinkled, it goes to step S8, if not, it goes to step S6;

[0025] S6, the control device records the width W2 of the rear side of the spiral mesh at the inlet side of the heating mechanism and determines whether (W1-W2) / W1 is within the range of n*S / N±B. If not, the control device proceeds to step S4; if so, the control device proceeds to step S7;

[0026] S7, judging whether the heating times n reaches the set total heating times N, if not, proceeding to step S3; if so, ending the entire heat setting process;

[0027] S8, control a pair of adjusting rollers to increase the tension of the spiral mesh and / or the setting temperature range T n The temperature of the heating mechanism is lowered within the temperature range and / or the rotation speed of the active roller is lowered, and then the process proceeds to step S4.

[0028] The process of the control device in step S4 determining whether wrinkles occur on the mesh surface of the spiral mesh is as follows: the control device receives visual information of the spiral mesh collected by the second visual collector and transmits the transverse line shape and the longitudinal line shape in the visual information to the wrinkle determination module of the control device. The wrinkle determination module has the following two determination methods:

[0029] S41, the wrinkle detection module identifies whether the transverse line shape of the spiral mesh surface has wavy lines. If so, it is determined that the mesh surface is wrinkled and the process proceeds to step S8; otherwise, it proceeds to step S42;

[0030] S42, the wrinkle detection module identifies whether the longitudinal line shape of the spiral mesh surface has wavy lines. If so, it is determined that the mesh surface is wrinkled and the process proceeds to step S8; otherwise, it proceeds to step S6;

[0031] or,

[0032] S41, the wrinkle detection module identifies whether the longitudinal line shape of the spiral mesh surface has wavy lines. If so, it is determined that the mesh surface is wrinkled and the process proceeds to step S8; otherwise, it proceeds to step S42;

[0033] S42, the wrinkle judging module identifies whether there are wavy lines on the transverse line shape of the spiral mesh surface. If so, it is judged that the mesh surface is wrinkled and the process goes to step S8; otherwise, it goes to step S6.

[0034] The step S1 further includes: providing a single shrinkage rate range A, which is an allowable range of the ratio of the difference between the rear side mesh width W2 of the spiral mesh at the inlet side of the heating mechanism and the front side mesh width W3 of the spiral mesh at the outlet side of the heating mechanism during the heat setting process, to the rear side mesh width W2. The smaller the single shrinkage rate range A is, the smaller the degree of width shrinkage of the spiral mesh after passing through the heating mechanism. The setting method further includes a step S5 located between step S4 and step S6, and step S5 is used to determine whether the mesh shrinkage of the spiral mesh on the front and rear sides of the heating mechanism during the heat setting process meets the requirements. The detailed steps of step S5 are as follows:

[0035] S51: The control device receives visual information of the spiral web collected by the first visual collector and the second visual collector, and transmits the rear side web width W2 of the spiral web at the inlet side of the heating mechanism and the front side web width W3 of the spiral web at the outlet side of the heating mechanism in the visual information to the shrinkage judgment module of the control device;

[0036] S52. The shrinkage judgment module judges whether (W1-W3) / W1 of the nth heat setting process is within the shrinkage rate range n*A of the nth heat setting. If it is within the range, it is determined that the shrinkage of the spiral mesh meets expectations; if it is not within the range, it does not meet expectations and needs to be adjusted.

[0037] The specific method steps for the shrinkage judgment module in step S52 to judge whether (W1-W3) / W1 of the nth heat setting process is within the shrinkage rate range n*A of the nth heat setting are as follows:

[0038] S521: The shrinkage determination module determines whether (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S8; otherwise, the process proceeds to step S522.

[0039] S522: The shrinkage determination module determines whether (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S9; otherwise, the process proceeds to step S6.

[0040] or,

[0041] S521, the shrinkage determination module determines whether (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S9; otherwise, the process proceeds to step S522;

[0042] S522: The shrinkage determination module determines whether (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S8; otherwise, the process proceeds to step S6.

[0043] S9, control a pair of adjusting rollers to reduce the mesh tension of the spiral mesh and / or in the setting temperature range T n The temperature of the heating mechanism is increased within the temperature range and / or the rotation speed of the active roller is increased, and then the process proceeds to step S4.

[0044] When wrinkles occur on the spiral mesh surface and / or the shrinkage determination module determines that (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process, step S8 is entered and the detailed steps of selecting the three adjustment methods in sequence in step S8 are as follows:

[0045] S81, controlling the adjusting roller to increase the mesh tension of the spiral mesh;

[0046] S82, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines appear, proceeding to step S83, otherwise proceeding to step S5;

[0047] S83, in the setting temperature range T n Lower the heating temperature of the heating mechanism within the temperature range;

[0048] S84, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S85, otherwise proceeding to step S5;

[0049] S85, reducing the rotation speed of the active roller;

[0050] S86. Determine whether the longitudinal line shape of the spiral mesh surface has wavy lines. If wavy lines appear, return to step S81; otherwise, go to step S5.

[0051] When the shrinkage determination module determines that (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process, the process proceeds to step S9. At this time, the detailed steps of step S9 for selecting the three adjustment methods in sequence are as follows:

[0052] S91, increasing the rotation speed of the active roller;

[0053] S92, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S93, otherwise proceeding to step S5;

[0054] S93, controlling the adjusting roller to reduce the mesh tension of the spiral mesh;

[0055] S94, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S95, otherwise proceeding to step S5;

[0056] S95, in the setting temperature range T n Lower the heating temperature of the heating mechanism within the temperature range;

[0057] S96: Determine whether the longitudinal line shape of the spiral mesh surface has wavy lines. If wavy lines appear, return to step S91; otherwise, go to step S5.

[0058] The present invention has the following advantages over the prior art:

[0059] The non-contact heat setting machine of the present invention determines whether the shrinkage of the spiral mesh is within a reasonable range by real-time monitoring of the width of the spiral mesh surface at the rear and front sides of the heating mechanism, and determines whether the spiral mesh surface is wrinkled through a visual collector, and is configured with a subsequent adjustment method to control the mesh surface condition during the entire heating process; and in the heat setting method, whether the heating process and the entire heat setting process are completed is determined by judging the shrinkage degree of the spiral mesh, further ensuring the heat setting effect of the spiral mesh and the quality of the spiral mesh after heat setting; compared with a contact heat setting machine, the heat penetration efficiency and the setting quality of the product can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 is a schematic structural diagram of a spiral mesh;

[0061] Figure 2 is a schematic diagram of the spiral mesh in normal state;

[0062] Figure 3 is a schematic diagram of the situation when the spiral mesh undergoes excessive lateral contraction;

[0063] Figure 4 is a schematic diagram of the spiral mesh when it undergoes excessive longitudinal contraction;

[0064] Figure 5 is a schematic diagram of the spiral mesh when longitudinal wrinkling occurs;

[0065] Figure 6 is a schematic diagram of the spiral mesh when the horizontal mesh surface is wrinkled;

[0066] FIG7 is a side structural diagram of an embodiment of a non-contact setting machine for spiral web heat setting provided by the present invention;

[0067] Figure 8 is a top view of the non-contact setting machine for spiral web heat setting shown in Figure 7;

[0068] FIG9 is a control principle diagram of a non-contact setting machine for spiral web heat setting provided by the present invention;

[0069] FIG10 is a flow chart of a shaping method of a non-contact shaping machine for heat-setting a spiral mesh provided by the present invention;

[0070] Figure 11 is a flow chart of sub-step S8 in the shaping method shown in Figure 10;

[0071] Figure 12 is a flow chart of sub-step S9 in the shaping method shown in Figure 10;

[0072] Figure 13 is a flow chart of sub-step S4 in the shaping method shown in Figure 10;

[0073] FIG14 is a schematic diagram of the heat setting times and the corresponding setting temperature range of the non-contact setting machine for heat setting of spiral mesh provided by the present invention.

[0074] Among them: 100—non-contact setting machine; 1—conveyance mechanism; 11—fixed frame; 12—active roller; 13—tensioning frame; 14—tensioning roller; 15—guide rail; 16—tension monitor; 2—heating mechanism; 21—upper heater; 22—lower heater; 23—upper temperature monitor; 24—lower temperature monitor; 25—heating area; 3—first roller assembly; 31—first guide roller; 32—first adjusting roller; 4—second roller assembly; 41—second guide roller; 42—second adjusting roller; 51—first visual collector; 52—second visual collector; 6—control device; 61—wrinkle judgment module; 62—shrinkage judgment module; 7—intelligent port; 81—spiral ring; 82—connecting core wire; 83—filling core wire. DETAILED DESCRIPTION

[0075] In order to describe the technical content, structural features, achieved purposes and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the presence of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0076] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0077] Furthermore, in this application, spatially relative terms such as "under," "beneath," "under," "down," "above," "upper," "above," "higher," "side" (e.g., as in "sidewall"), etc., are used to describe the relationship of one element to another (other) element as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, an element described as "under" or "beneath" other elements or features would subsequently be positioned "above" the other elements or features. Thus, the exemplary term "under" can include both above and below orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0078] In this application, the term "width" refers to the width of the spiral mesh in the left-right direction. The term "line shape" refers to the two-dimensional curved image of the spiral mesh on a vertical plane extending in the front-to-back direction or a vertical plane extending in the left-to-right direction.

[0079] As shown in Figures 2-6, the normal state of the spiral mesh during the heat setting process is shown in Figure 2, but excessive shrinkage (see Figures 3 and 4) and mesh wrinkling (see Figures 5 and 6) may occur. Excessive shrinkage will cause the width of the spiral mesh to fail to meet the process requirements and the quality of the spiral mesh to decline, while mesh wrinkling will directly cause the spiral mesh to be unusable. Excessive shrinkage can be judged by monitoring the width ratio of the spiral mesh before and after passing through the heating mechanism 2 (the smaller the ratio, the higher the degree of shrinkage, and when it exceeds a certain threshold, it is excessive shrinkage). Mesh wrinkling can be judged by the transverse line shape and the longitudinal line shape of the spiral mesh surface. If at least one line shape is a wavy line, it can be determined that mesh shrinkage has occurred.

[0080] 7-8 show an embodiment of the present invention - a non-contact setting machine 100. The non-contact setting machine 100 can heat-set the spiral mesh and control the shrinkage of the spiral mesh within a certain range during the heat-setting process and prevent the mesh from wrinkling (see FIG. 5 and FIG. 6). The non-contact setting machine 100 includes a conveying mechanism 1 supported on the ground, a heating mechanism 2 for heating a spiral web, a web surface control mechanism for adjusting the width of the spiral web, a visual collector for collecting visual information of the spiral web at the inlet and outlet sides of the heating mechanism 2, and a control device 6 for controlling the operation of the non-contact setting machine 100. As shown in FIG9 , the control device 6 is simultaneously connected to a first visual collector 51, a second visual collector 52, an upper temperature monitor 23, a lower temperature monitor 24, a tension monitor 16, a driving roller 12, a tensioning frame 13, an upper heater 21, a lower heater 22, a first adjusting roller 32, and a second adjusting roller 42. The control device 6 is capable of receiving the visual information of the spiral web collected by the visual collector and controlling and adjusting the rotation speed of the conveying mechanism 1 and / or the web surface tension of the spiral web and / or the heating temperature of the heating mechanism 2. The control device 6 is connected to an intelligent port 7, which is configured to transmit the operating parameters of the non-contact setting machine 100 to a corresponding production management system to achieve intelligent management of spiral web production. In actual application, the control device 6 may be a single chip microcomputer or a microprocessor pre-installed with a program.

[0081] As shown in Figures 7-8, the conveying mechanism 1 with a tensioning function includes a fixed frame 11 supported on the ground, a driving roller 12 rotatably connected to the fixed frame 11, a tensioning frame 13 movable in the front-to-back direction, and a tensioning roller 14 rotatably connected to the tensioning frame 13. The tensioning frame 13 is located at the rear of the fixed frame 11 and is movably connected to a guide rail 15 extending in the front-to-back direction. When the non-contact setting machine 100 is in operation, the driving roller 12 and the tensioning roller 14 are both located inside the spiral mesh and tension the spiral mesh. The driving roller 12 drives the spiral mesh to rotate, and the tensioning frame 13 changes the mesh tension by driving the tensioning roller 14 to move back and forth.

[0082] 7 and 9 , the conveying mechanism 1 further includes a tension monitor 16 mounted on the tensioning frame 13. The tension monitor 16 is capable of measuring the surface tension of the spiral mesh. The tension monitor 16 is signal-connected to the control device 6 and can transmit the measured tension value to the control device 6. The control device 6 is preset with a tension threshold and can control the tensioning frame 13 to move forward and backward along the guide rail 15. The control device 6 is configured to control the tensioning frame 14 to move backward when the received tension value is less than the tension threshold, thereby tensioning the spiral mesh.

[0083] As shown in Figures 7-8, the heating mechanism 2 includes an upper heater 21, a lower heater 22 arranged opposite the upper heater 21, and an upper temperature monitor 23 and a lower temperature monitor 24 located in front of the upper heater 21 and the lower heater 22, respectively. The upper heater 21 and the lower heater 22 extend in the left-right direction and define a heating region 25 between the upper heater 21 and the lower heater 22. The heating region 25 is configured such that the horizontal center axis of the heating region 25 is aligned with the highest point of the active roller 12 and is capable of allowing the spiral web to pass through. The upper temperature monitor 23 and the lower temperature monitor 24 are respectively capable of monitoring the upper and lower surface temperatures of the spiral web as it passes through the heating region 25 and transmitting the measured surface temperature values ​​to the control device 6. The control device 6 is configured to adjust the output power of the upper heater 21 or the lower heater 22 based on the measured surface temperatures of the spiral web. In this embodiment, both the upper heater 21 and the lower heater 22 are infrared heating devices, and the upper heater 21 is configured to move up and down under the control of the control device 6. In other embodiments, the heating mechanism 2 may also be configured as a pair of hot air boxes facing each other up and down.

[0084] As shown in Figures 7-8, the mesh surface adjustment mechanism includes a first roller assembly 3 adjacent to the rear side of the heating mechanism 2 and a second roller assembly 4 adjacent to the front side of the heating mechanism 2. The first roller assembly 3 includes a pair of first guide rollers 31 arranged in a front-to-rear manner and a first adjustment roller 32 located between the pair of first guide rollers 31. The first adjustment roller 32 and the pair of first guide rollers 31 are both configured to extend in the left-right direction. The first roller assembly 3 is configured to allow the spiral mesh to pass through in a V-shape. The highest point of the pair of first guide rollers 31 is flush with the highest point of the active roller 12. The first adjustment roller 32 can move up and down relative to the pair of first guide rollers 31 and press the upper end surface of the spiral mesh downward. The structure and function of the second roller assembly 4 are the same as those of the first roller assembly 3: the second roller assembly 4 includes a pair of second guide rollers 41 arranged relative to each other in the front and back directions and a second adjusting roller 42 located between the pair of second guide rollers 41, and the second adjusting roller 42 and the pair of second guide rollers 41 are both configured to extend along the left and right directions; wherein, the second roller assembly 4 is configured to allow the spiral net to pass through in a V shape, the highest point of the pair of second guide rollers 41 is flush with the highest point of the active roller 12, and the second adjusting roller 42 can move up and down relative to the pair of second guide rollers 41 and press the upper end surface of the spiral net downward.

[0085] As shown in FIG7 , the first visual collector 51 and the second visual collector 52 are respectively capable of monitoring and transmitting visual information of the spiral web on the rear and front sides of the heating mechanism 2. The first visual collector 51 is located on the upper front side of the first roller assembly 3, and the second visual collector 52 is located on the upper rear side of the second roller assembly 4. The control device 6 is configured to identify the rear web width W2, rear longitudinal line shape, and rear transverse line shape of the spiral web on the rear side of the heating mechanism 2 based on the visual information transmitted by the first visual collector 51, and to identify the front web width W3, front longitudinal line shape, and front transverse line shape of the spiral web on the front side of the heating mechanism 2 based on the visual information transmitted by the second visual collector 52.

[0086] As shown in FIG9 , the control device 6 pre-stores a wrinkle determination module 61 and a shrinkage determination module 62. The wrinkle determination module 61 can identify whether there are wavy lines in the rear longitudinal line shape, the rear transverse line shape, the front longitudinal line shape, and the front transverse line shape, and determine whether the spiral mesh has wrinkles (the presence of wavy lines indicates wrinkles). The shrinkage determination module 62 pre-stores a shrinkage range and is configured to determine whether the spiral mesh has excessive shrinkage based on a comparison between the rear mesh width of the spiral mesh at the inlet side of the heating mechanism 2 and the front mesh width of the spiral mesh at the outlet side of the heating mechanism 2 and the initial mesh width of the spiral mesh before heating.

[0087] As shown in Figures 7-9, since the first adjusting roller 32 and the second adjusting roller 42 are both pressed against the upper end surface of the spiral mesh, the nth shrinkage rate range value is pre-stored in the control device 6 and is configured as follows: if the wrinkling judgment module 61 determines that the spiral mesh has wrinkles on the mesh surface, the first adjusting roller 32 and the second adjusting roller 42 are controlled to move downward; if (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting, the first adjusting roller 32 and the second adjusting roller 42 are controlled to move downward; if (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting, the first adjusting roller 32 and the second adjusting roller 42 are controlled to move upward.

[0088] The following describes the operating principle of the non-contact shaping machine 100 provided in this embodiment: Before the non-contact shaping machine 100 is activated, the first adjusting roller 32, the second adjusting roller 42, and the upper heater 21 are all in an elevated position. The spiral web is sequentially passed through the tensioning roller 14, the first roller assembly 3, the heating mechanism 2, the second roller assembly 4, and the driving roller 12, connecting them end to end. Subsequently, the control device 6 controls the first adjusting roller 32, the second adjusting roller 42, and the upper heater 21 to set positions, forcing the spiral web to pass through the first roller assembly 3 and the second roller assembly 4 in a V-shape. Thereafter, the tensioning frame 13 is controlled to move rearward until the web tension reaches a predetermined threshold value set by the control device 6. The driving roller 12 then rotates the spiral web, while the upper heater 21 and the lower heater 22 heat and shape the spiral web. During the heating and shaping of the spiral mesh, the control device 6 controls the output power of the upper heater 21 and the lower heater 22 based on the temperatures measured by the upper temperature monitor 23 and the lower temperature monitor 24, respectively, to ensure that the upper and lower surfaces of the spiral mesh are evenly heated; if the wrinkling module 61 determines that the spiral mesh has wrinkles on the mesh surface, the control device 6 controls the heating temperature of the heating mechanism 2 to reduce the mesh surface temperature of the spiral mesh, and / or controls the active roller 12 to reduce the rotation speed, and / or controls the first adjusting roller 32 and the second adjusting roller 42 to move downward to increase the mesh surface tension of the spiral mesh; if the shrinkage judgment module 62 determines that the width ratio is higher than the nth shrinkage ratio ... The maximum value of the shrinkage rate range is reached by the control device 6, the control device 6 controls to reduce the heating temperature of the heating mechanism 2 to reduce the temperature of the spiral mesh surface, and / or controls the active roller 12 to reduce the rotation speed, and / or controls the first adjusting roller 32 and the second adjusting roller 42 to move downward to increase the tension of the spiral mesh surface; if the shrinkage judgment module 62 determines that the width ratio is lower than the minimum value of the nth shrinkage rate range, the control device 6 controls to increase the heating temperature of the heating mechanism 2 to increase the temperature of the spiral mesh surface, and / or controls the active roller 12 to increase the rotation speed, and / or controls the first adjusting roller 32 and the second adjusting roller 42 to move upward to reduce the tension of the spiral mesh surface.

[0089] It should be noted that the temperature of the spiral mesh is gradually increased during the heating and shaping period. The specific heating steps are shown in Figure 14: 1) After the spiral mesh is heated from room temperature to temperature T1 and maintained at temperature T1, the first heating and shaping and pulling process is completed, so that the mesh surface reaches the first shrinkage rate; 2) After the spiral mesh is shaped at temperature T1, it is continuously heated to temperature T2 and maintained at temperature T2, and the second heating and shaping and pulling process is completed, so that the mesh surface reaches the second shrinkage rate; 3) After the spiral mesh is shaped at temperature T2, it is continuously heated to temperature T3. n (1≤n≤N) and keep T n Temperature, complete the nth heating shaping and pulling process, so that the mesh surface reaches the nth shrinkage rate; 4) the spiral mesh is at T n After the temperature is set, continue to heat up to T N (N is the set value) and keep TN Temperature, complete the Nth heating shaping and pulling process, so that the mesh surface reaches the Nth shrinkage rate, completing all shaping processes.

[0090] FIG10 shows another embodiment of the present invention - a spiral mesh shaping method, which can control a non-contact shaping machine to automatically heat and shape the spiral mesh, maintain the shrinkage of the spiral mesh within a certain range, and prevent the mesh from wrinkling. A shaping method for a non-contact shaping machine for heat shaping a spiral mesh, characterized in that: the non-contact shaping machine 100 used in the shaping method includes an active roller 12 capable of driving the spiral mesh to rotate, a heating mechanism 2 capable of non-contact heating the spiral mesh, a pair of adjusting rollers located on the inlet and outlet sides of the heating mechanism 2, a first visual collector 51 located between an adjusting roller on the inlet side of the heating mechanism 2 and the inlet end of the heating mechanism 2, and a second visual collector 52 located between another adjusting roller on the outlet side of the heating mechanism 2 and the outlet end of the heating mechanism 2, and a control device 6, wherein the pair of adjusting rollers are in contact with the mesh surface of the spiral mesh and can increase or decrease the mesh surface tension of the spiral mesh by moving up and down, the spiral mesh passes through the heating mechanism 2 from back to front, the pair of visual collectors can respectively collect visual information of the spiral mesh on the front and rear sides of the heating mechanism 2, the control device 6 can identify the width, longitudinal line shape and transverse line shape of the spiral mesh based on the visual information of the spiral mesh collected by the visual collectors, and the control device 6 can control the rotation speed of the active roller 12, the temperature of the heating mechanism 2 and the position of the adjusting roller; the specific steps of the shaping method are:

[0091] S1. Provide the target width shrinkage rate S of the spiral mesh, the total number of heating times N, the single shrinkage rate range A and set the shaping temperature range T. n , where: the target width shrinkage rate S is the width ratio of the spiral mesh before and after the spiral mesh completes the entire heat setting process; the total heating times N is the total number of heating times of the spiral mesh in the entire heat setting process, and one heating time refers to the number of times the spiral mesh is heated in T n The heating process is completed within the temperature range, n is the number of heating times, 1≤n≤N; the single shrinkage rate range A is the allowable range of the difference ratio of the width of the spiral mesh on both sides of the heating mechanism 2 during the heat setting process ((W2-W3) / W2). The smaller the single shrinkage rate range A is, the smaller the width shrinkage of the spiral mesh after passing through the heating mechanism 2 is; the setting temperature range T n The heating temperature range corresponding to the nth heat setting of the spiral mesh; the target width shrinkage rate S, the total number of heating times N, the single shrinkage rate range A and the nth setting temperature range T n All of them are determined by the staff according to the specific specifications, models, materials, etc. of the spiral mesh;

[0092] S2, set the initial heating number n=1, and record the initial mesh width W1 of the spiral mesh before heating;

[0093] S3, heating the spiral mesh through the heating mechanism and gradually increasing the surface temperature of the spiral mesh to the setting temperature range T of the spiral mesh n Inside;

[0094] S4, the control device 6 determines whether the mesh surface of the spiral mesh is wrinkled. If wrinkled, the process proceeds to step S8; otherwise, the process proceeds to step S5 (if the process does not compare the shrinkage rate with the n-th shrinkage rate range in real time, the process may proceed directly to step S6);

[0095] In step S4, the control device 6 receives the visual information of the spiral web collected by the second visual collector 52 and transmits the transverse line shape and the longitudinal line shape in the visual information to the wrinkle determination module 61 of the control device 6. The wrinkle determination module 61 determines whether the surface of the spiral web is wrinkled, and further comprises the following steps as shown in FIG13:

[0096] S41, the wrinkle determination module 61 identifies whether a wavy line appears on the transverse line of the spiral mesh surface. If a wavy line appears, the spiral mesh surface is wrinkled.

[0097] S42, the wrinkle determination module 61 identifies whether a wavy line appears on the longitudinal line shape of the spiral mesh surface. If a wavy line appears, the spiral mesh surface is wrinkled.

[0098] S5 is used to determine whether the shrinkage of the spiral mesh on the front and rear sides of the heating mechanism 2 during the heat setting process meets the requirements. The detailed steps of step S5 are as follows: S51, the control device 6 receives the visual information of the spiral mesh collected by the first visual collector 51 and the second visual collector 52 and transmits the rear side mesh width W2 of the spiral mesh on the inlet side of the heating mechanism 2 and the front side mesh width W3 of the spiral mesh on the outlet side of the heating mechanism 2 in the visual information to the shrinkage judgment module 62 of the control device 6; S521, the shrinkage judgment module 62 determines whether (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S8; otherwise, the process proceeds to step S522; S522, the shrinkage judgment module 62 determines whether (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S9; otherwise, the process proceeds to step S6;

[0099] S6. The control device 6 receives the visual information of the spiral web collected by the first visual collector 51 and the second visual collector 52 and transmits the rear side web width W2 of the spiral web on the inlet side in the visual information to the shrinkage judgment module 62 of the control device 6. The shrinkage judgment module 62 judges whether (W1-W2) / W1 is within the range of n*S / N±B (B is an error, which is a fixed value, such as 0.02%). If not, the process proceeds to step S4; if so, the process proceeds to step S7.

[0100] S7, judging whether the heating times n reaches the set total heating times N, if not, proceeding to step S3; if so, ending the entire heat setting process;

[0101] S8, control a pair of adjusting rollers to increase the tension of the spiral mesh and / or the setting temperature range T n Lower the heating temperature of the heating mechanism 2 and / or reduce the rotation speed of the active roller 12 within the temperature range, and then enter step S4;

[0102] This step is an adjustment step for when the spiral mesh is over-contracted or wrinkled. The mesh tension of the spiral mesh is increased by controlling the movement of the adjusting roller, thereby utilizing external force to open the spiral mesh. The surface temperature of the spiral mesh can be reduced by controlling the heating mechanism 2 to reduce the heating temperature, thereby reducing the shrinkage or wrinkling of the spiral mesh caused by heat. The contact time between the spiral mesh and the active roller 12 is increased by reducing the rotation speed of the active roller 12, thereby increasing the mesh tension of the spiral mesh at the active roller 12. In actual application, all three adjustment methods can be used, and one can be selected according to the actual situation (such as whether the heating temperature has reached the lowest value of the setting temperature range, whether the adjusting roller has reached the limit of movement, etc.), or the three adjustment methods can be selected in sequence according to the actual situation.

[0103] As shown in FIG11 , when the spiral mesh surface wrinkles and / or the shrinkage determination module 62 determines that (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process, the process proceeds to step S8 . At this time, step S8 selects the three adjustment methods in sequence. The detailed steps are as follows:

[0104] S81, controlling the adjusting roller to increase the mesh tension of the spiral mesh;

[0105] S82, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines appear, proceeding to step S83, otherwise proceeding to step S5;

[0106] S83, in the setting temperature range T n Lower the heating temperature of the heating mechanism 2 within the temperature range;

[0107] S84, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S85, otherwise proceeding to step S5;

[0108] S85, reducing the rotation speed of the active roller 12;

[0109] S86, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, returning to step S81, otherwise proceeding to step S5;

[0110] S9, control a pair of adjusting rollers to reduce the mesh tension of the spiral mesh and / or in the setting temperature range T n Increase the heating temperature of the heating mechanism 2 and / or increase the rotation speed of the active roller 12 within the temperature range, and then enter step S4;

[0111] This step is an adjustment step when the natural shrinkage of the spiral mesh is suppressed by external force. The movement of the adjusting roller is controlled to reduce the mesh surface tension of the spiral mesh, thereby allowing the spiral mesh to shrink naturally. By controlling the heating mechanism 2 to increase the heating temperature, the surface temperature of the spiral mesh can be increased, thereby increasing the shrinkage of the spiral mesh caused by heat. By increasing the rotation speed of the active roller 12, the contact time between the spiral mesh and the active roller 12 is reduced, thereby reducing the mesh surface tension of the spiral mesh at the active roller 12. In actual application, all three adjustment methods can be used, and one can be selected according to the actual situation (such as whether the heating temperature has reached the highest value of the setting temperature range, whether the adjusting roller has reached the limit of movement, etc.), or the three adjustment methods can be selected in sequence according to the actual situation.

[0112] As shown in FIG12 , when the shrinkage determination module 62 determines that (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process, the process proceeds to step S9 . At this time, the detailed steps of selecting the three adjustment methods in sequence in step S9 are as follows:

[0113] S91, increasing the rotation speed of the active roller 12;

[0114] S92, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S93, otherwise proceeding to step S5;

[0115] S93, controlling the adjusting roller to reduce the mesh tension of the spiral mesh;

[0116] S94, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S95, otherwise proceeding to step S5;

[0117] S95, in the setting temperature range T n Lower the heating temperature of the heating mechanism 2 within the temperature range;

[0118] S96: Determine whether the longitudinal line shape of the spiral mesh surface has wavy lines. If wavy lines appear, return to step S91; otherwise, go to step S5.

[0119] The non-contact setting machine of the present invention determines whether the shrinkage of the spiral mesh is within a reasonable range by real-time monitoring of the width of the spiral mesh surface at the rear and front sides of the heating mechanism, and determines whether the spiral mesh surface is wrinkled through a visual collector, and is equipped with a subsequent adjustment method to control the mesh surface condition during the entire heating process; and in the setting method, whether the heating process and the entire heat setting process are completed is determined by judging the shrinkage degree of the spiral mesh, thereby further ensuring the heat setting effect of the spiral mesh and the quality of the spiral mesh after heat setting.

[0120] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements. The scope of protection required by the present invention is defined by the attached claims, description and their equivalents. Any changes made on the basis of the technical solution in accordance with the technical ideas proposed by the present invention fall within the scope of protection of the present invention. Technologies not covered by the present invention can be implemented by existing technologies.

Claims

1. A non-contact setting machine for spiral mesh heat setting, characterized by: The non-contact setting machine (100) comprises a conveying mechanism (1) capable of driving a spiral net to rotate, a heating mechanism (2) capable of defining a heating area (25) for the spiral net to pass through, a first visual collector (51) and a second visual collector (52) located at the inlet and outlet sides of the heating mechanism (2) and used to collect visual information of the spiral net at corresponding locations, a control device (6) receiving the visual information of the spiral net collected by the first visual collector (51) and the second visual collector (52) and identifying the width, longitudinal line shape and transverse line shape of the spiral net at corresponding locations, the conveying mechanism (1) and the heating mechanism (2) being connected to the control device (6) via circuits respectively, and the control device (6) being capable of controlling and adjusting the rotation speed of the conveying mechanism (1) and / or the mesh tension of the spiral net and / or the heating temperature of the heating mechanism (2).

2. The non-contact setting machine for spiral mesh heat setting according to claim 1, characterized in that: The inlet and outlet sides of the heating mechanism (2) are respectively provided with a mesh surface regulating mechanism, the mesh surface regulating mechanism comprising a first roller assembly (3) located at the inlet side of the heating mechanism (2) and a second roller assembly (4) located at the outlet side of the heating mechanism (2); the first visual collector (51) is located in the area between the inlet end of the heating mechanism (2) and the first regulating roller (32) in the first roller assembly (3); and the second visual collector (52) is located in the area between the outlet end of the heating mechanism (2) and the second regulating roller (42) in the second roller assembly (4).

3. The non-contact setting machine for spiral mesh heat setting according to claim 2, characterized in that: The first roller assembly (3) comprises a pair of first guide rollers (31) arranged in parallel and a first adjusting roller (32) located between the pair of first guide rollers (31); the spiral net sequentially contacts and passes through the upper edge of one first guide roller (31), the lower edge of the first adjusting roller (32), and the upper edge of another first guide roller (31) along the direction of travel, and then enters the heating area (25); or the spiral net sequentially contacts and passes through the lower edge of one first guide roller (31), the upper edge of the first adjusting roller (32), and the lower edge of another first guide roller (31) along the direction of travel, and then enters the heating area (25); the first adjusting roller (32) controlled by the control device (6) can press one end face of the spiral net and can move up and down to adjust the net surface tension of the spiral net.

4. The non-contact setting machine for spiral mesh heat setting according to claim 2, characterized in that: The second roller assembly (4) includes a pair of second guide rollers (41) arranged in parallel and a second adjusting roller (42) located between the pair of second guide rollers (41); the spiral web leaving the heating area (25) sequentially contacts and passes through the upper edge of one second guide roller (41), the lower edge of the second adjusting roller (42), and the upper edge of another second guide roller (41) along the direction of travel, or the spiral web leaving the heating area (25) sequentially contacts and passes through the lower edge of one second guide roller (41), the upper edge of the second adjusting roller (42), and the lower edge of another second guide roller (41) along the direction of travel; the second adjusting roller (42) controlled by the control device (6) can press one end face of the spiral web and can move up and down to adjust the web tension of the spiral web.

5. The non-contact setting machine for spiral mesh heat setting according to any one of claims 1 to 4, characterized in that: The conveying mechanism (1) includes an active roller (12) capable of driving the spiral net to rotate and a movable tensioning roller (14), the active roller (12) is rotatably connected to a fixed frame (11) and the tensioning roller (14) is rotatably connected to a tensioning frame (13), the tensioning frame (13) is arranged on a guide rail (15) and the tensioning frame (13) can move along the setting direction of the guide rail (15) to change the net surface tension of the spiral net; the active roller (12) and the tensioning frame (13) are respectively connected to a control device (6), the control device (6) can control the rotation speed of the active roller (12) and the control device (6) can control the position of the tensioning frame (13) on the guide rail (15).

6. The non-contact setting machine for spiral mesh heat setting according to claim 5, characterized in that: The conveying mechanism (1) further comprises a tension monitor (16) arranged on the tensioning frame (13), wherein the tension monitor (16) is capable of measuring the surface tension of the spiral mesh and the tension monitor (16) is connected to the control device (6) by signal so as to transmit the measured tension value; the control device (6) pre-stores a tension threshold value and is configured such that: if the tension value monitored by the tension monitor (16) is less than the tension threshold value, the control device (6) controls the tensioning frame (13) to move backward.

7. The non-contact setting machine for spiral mesh heat setting according to any one of claims 1 to 4, characterized in that: The heating mechanism (2) comprises an upper heater (21) and a lower heater (22) arranged opposite to each other in the upper and lower directions. A heating area (25) for the spiral net to pass through is defined between the upper heater (21) and the lower heater (22) extending in the width direction of the spiral net. An upper temperature monitor (23) and a lower temperature monitor (24) corresponding to the upper heater (21) and the lower heater (22) are respectively provided on the outlet side of the heating area (25). The upper temperature monitor (23) and the lower temperature monitor (24) are both connected to the control device (6) for signal transmission and can respectively monitor the upper and lower surface temperatures of the spiral net when it passes through the heating area (25) and transmit the measured surface temperature values ​​to the control device (6).

8. The non-contact setting machine for spiral mesh heat setting according to any one of claims 1 to 4, characterized in that: The control device (6) is provided with a wrinkle judging module (61) and a shrinkage judging module (62). The wrinkle judging module (61) can judge whether the spiral mesh surface is wrinkled based on the visual information collected by the first visual collector (51) and the second visual collector (52). Specifically, the control device (6) receives the visual information of the spiral mesh collected by the first visual collector (51) and the second visual collector (52) and transmits the transverse line shape and the longitudinal line shape in the visual information to the wrinkle judging module (61). The wrinkle judging module (61) judges whether the spiral mesh surface is wrinkled based on the transverse line shape and the longitudinal line shape; the shrinkage judging module The block (62) can judge whether the surface of the spiral mesh is excessively shrunk based on the visual information collected by the first visual collector (51) and the second visual collector (52); specifically, the control device (6) receives the visual information of the spiral mesh collected by the first visual collector (51) and the second visual collector (52) and transmits the width information in the visual information to the wrinkle judgment module (61), and the shrinkage judgment module (62) judges whether the surface of the spiral mesh is excessively shrunk based on the width of the rear side surface of the spiral mesh at the inlet side of the heating mechanism (2) and the comparison between the width of the front side surface of the spiral mesh at the outlet side of the heating mechanism (2) and the initial surface width of the spiral mesh before heating.

9. The non-contact setting machine for spiral mesh heat setting according to any one of claims 1 to 4, characterized in that: The control device (6) is connected to the production management system via a smart port (7) for signal transmission. The smart port (7) can transmit the operating parameters of the non-contact shaping machine (100) to the corresponding production management system.

10. A shaping method for a non-contact shaping machine for heat-setting a spiral mesh, characterized by: The non-contact shaping machine (100) used in the shaping method includes an active roller (12) capable of driving the spiral net to rotate, a heating mechanism (2) capable of non-contact heating the spiral net, a pair of adjusting rollers located at the inlet and outlet sides of the heating mechanism (2), a first visual collector (51) located between an adjusting roller on the inlet side of the heating mechanism (2) and the inlet end of the heating mechanism (2), and a second visual collector (52) located between another adjusting roller on the outlet side of the heating mechanism (2) and the outlet end of the heating mechanism (2), and a control device (6). The pair of adjusting rollers are in contact with the mesh surface of the spiral net and can increase or decrease the mesh surface tension of the spiral net by moving up and down. The spiral net passes through the heating mechanism (2) from back to front. The pair of visual collectors can respectively collect visual information of the corresponding spiral nets. The control device (6) can identify the width, longitudinal line shape and transverse line shape of the spiral net based on the visual information of the spiral net collected by the visual collectors. The control device (6) can control the rotation speed of the active roller (12), the temperature of the heating mechanism (2) and the position of the adjusting rollers. The specific steps of this modeling method are: S1. Provide the target width shrinkage rate S of the spiral mesh, the total number of heating times N and set the setting temperature range T n , where: the target width shrinkage rate S is the width ratio of the spiral mesh before and after the spiral mesh completes the entire heat setting process; the total heating times N is the total number of heating times of the spiral mesh in the entire heat setting process, and one heating time refers to the number of times the spiral mesh is heated in T n The heating process is completed within the temperature range, n is the number of heating times, 1≤n≤N; the setting temperature range is T n The heating temperature range corresponding to the nth heat setting of the spiral mesh; S2, set the initial heating number n=1, and record the initial mesh width W1 of the spiral mesh before heating; S3, heating the spiral mesh through the heating mechanism (2) and gradually increasing the surface temperature of the spiral mesh to the setting temperature range T of the spiral mesh n Inside; S4, the control device (6) determines whether the mesh surface of the spiral mesh is wrinkled, if wrinkled, it proceeds to step S8, if not, it proceeds to step S6; S6, the control device (6) records the width W2 of the rear side of the spiral mesh at the inlet side of the heating mechanism (2) and determines whether (W1-W2) / W1 is within the range of n*S / N±B. If not, the process proceeds to step S4; if so, the process proceeds to step S7; S7, judging whether the heating times n reaches the set total heating times N, if not, proceeding to step S3; if so, ending the entire heat setting process; S8, control a pair of adjusting rollers to increase the tension of the spiral mesh and / or the setting temperature range T n The heating temperature of the heating mechanism (2) is lowered within the temperature range and / or the rotation speed of the active roller (12) is lowered, and then step S4 is entered.

11. The shaping method of the non-contact shaping machine for spiral mesh heat setting according to claim 10, characterized in that: The process of the control device (6) in step S4 determining whether wrinkles occur on the mesh surface of the spiral mesh is as follows: the control device (6) receives visual information of the spiral mesh collected by the second visual collector (52) and transmits the transverse line shape and the longitudinal line shape in the visual information to the wrinkle determination module (61) of the control device (6). The wrinkle determination module (61) has the following two determination methods: S41, wrinkle judging module (61) identifies whether the horizontal line shape of the spiral mesh surface has wavy lines, and if so, it is judged that a wrinkle has occurred. If the mesh surface is wrinkled, the process goes to step S8; otherwise, the process goes to step S42; S42, the wrinkle judging module (61) identifies whether the longitudinal line shape of the spiral mesh surface has wavy lines, if so, it is judged that the mesh surface is wrinkled and the process goes to step S8, otherwise, it goes to step S6; or, S41, the wrinkle judging module (61) identifies whether the longitudinal line shape of the spiral mesh surface has wavy lines, if yes, it is judged that the mesh surface is wrinkled and the process goes to step S8, otherwise, it goes to step S42; S42, the wrinkle judging module (61) identifies whether the transverse line shape of the spiral mesh surface has wavy lines. If so, it is judged that the mesh surface is wrinkled and the process goes to step S8; otherwise, it goes to step S6.

12. The shaping method of the non-contact shaping machine for spiral mesh heat setting according to claim 10 or 11, characterized in that: The step S1 further comprises: providing a single shrinkage rate range A, wherein the single shrinkage rate range A is an allowable range of the ratio of the difference between the rear side mesh width W2 of the spiral mesh at the inlet side of the heating mechanism (2) and the front side mesh width W3 of the spiral mesh at the outlet side of the heating mechanism (2) during the heat setting process and the rear side mesh width W2. The smaller the single shrinkage rate range A is, the smaller the width shrinkage degree of the spiral mesh after passing through the heating mechanism (2) is. The setting method further comprises a step S5 located between step S4 and step S6, wherein step S5 is used to judge whether the mesh shrinkage of the spiral mesh at the front and rear sides of the heating mechanism (2) during the heat setting process meets the requirements. The detailed steps of step S5 are as follows: S51, the control device (6) receives the visual information of the spiral web collected by the first visual collector (51) and the second visual collector (52), and transmits the rear side web width W2 of the spiral web on the inlet side of the heating mechanism (2) and the front side web width W3 of the spiral web on the outlet side of the heating mechanism (2) in the visual information to the contraction judgment module (62) of the control device (6); S52, the shrinkage judgment module (62) judges whether (W1-W3) / W1 of the nth heat setting process is within the shrinkage rate range n*A of the nth heat setting. If it is within the range, it is determined that the shrinkage of the spiral mesh is in accordance with expectations; if it is not within the range, it is not in accordance with expectations and needs to be adjusted.

13. The shaping method of the non-contact shaping machine for spiral mesh heat setting according to claim 12, characterized in that: The specific method steps for the shrinkage judgment module (62) in step S52 to judge whether (W1-W3) / W1 of the nth heat setting process is within the shrinkage rate range n*A of the nth heat setting are as follows: S521, the shrinkage judgment module (62) judges whether (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process, if yes, then proceed to step S8, otherwise, then proceed to step S522; S522, the shrinkage judgment module (62) judges whether (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S9; if not, the process proceeds to step S6; or, S521, the shrinkage judgment module (62) judges whether (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S9; if not, the process proceeds to step S522; S522, the shrinkage judgment module (62) judges whether (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting process. If yes, the process proceeds to step S8; otherwise, the process proceeds to step S6; S9, control a pair of adjusting rollers to reduce the mesh tension of the spiral mesh and / or in the setting temperature range T n The heating temperature of the heating mechanism (2) is increased within the temperature range and / or the rotation speed of the active roller (12) is increased, and then step S4 is entered.

14. The shaping method of the non-contact shaping machine for spiral mesh heat setting according to claim 12, characterized in that: When the spiral mesh surface wrinkles and / or the shrinkage judgment module (62) judges that (W1-W3) / W1 of the nth heat setting process is less than the lower limit of the shrinkage rate range n*A of the nth heat setting, step S8 is entered and the detailed steps of selecting the three adjustment methods in sequence in step S8 are as follows: S81, controlling the adjusting roller to increase the mesh tension of the spiral mesh; S82, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines appear, proceeding to step S83, otherwise proceeding to step S5; S83, in the setting temperature range T n lowering the heating temperature of the heating mechanism (2) within a temperature range; S84, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S85, otherwise proceeding to step S5; S85, reducing the rotation speed of the active roller (12); S86. Determine whether the longitudinal line shape of the spiral mesh surface has wavy lines. If wavy lines appear, return to step S81; otherwise, go to step S5.

15. The shaping method of the non-contact shaping machine for spiral mesh heat setting according to claim 14, characterized in that: When the shrinkage judgment module (62) judges that (W1-W3) / W1 of the nth heat setting process is greater than the upper limit of the shrinkage rate range n*A of the nth heat setting, the process proceeds to step S9 and the detailed steps of selecting the three adjustment methods in sequence in step S9 are as follows: S91, increasing the rotation speed of the active roller (12); S92, determining whether the horizontal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S93, otherwise proceeding to step S5; S93, controlling the adjusting roller to reduce the mesh tension of the spiral mesh; S94, determining whether the longitudinal line shape of the spiral mesh surface has wavy lines, if wavy lines are present, proceeding to step S95, otherwise proceeding to step S5; S95, in the setting temperature range T n lowering the heating temperature of the heating mechanism (2) within a temperature range; S96: Determine whether the longitudinal line shape of the spiral mesh surface has wavy lines. If wavy lines appear, return to step S91; otherwise, go to step S5.

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