Screen door hem folding apparatus

Abstract

The present application belongs to the technical field of edge cloth folding processing of screen door production, and particularly relates to a screen door edge cloth folding equipment. The double-layer edge wrapping can make the edge cloth have a compensation part, and the compensation part can complete the gap sealing after being adsorbed by the two corresponding magnetic strips, thereby achieving the effect of "seamless", and the edge cloth one and the edge cloth two complete the double-layer protection of the screen side. The preliminary folding and final folding are respectively performed by the folding cylinder and the folding frame, the edge cloth two and the edge cloth three after preliminary folding completely enter the inside of the edge cloth one through the linear creases, the two linear creases are aligned up and down and attached to the two sides of the screen through the folding frame, and due to the special design of the tail of the folding frame, the edge cloth two can be wrapped outside the edge cloth three and linearly fixed magnetic strips, so that the edge cloth two will not appear the wrinkle phenomenon in the subsequent edge sealing process.

Description

Technical Field

[0001] This invention relates to the technical field of edge fabric folding processing in screen door production, specifically to a screen door edge fabric folding device. Background Technology

[0002] In existing technologies, when edge-binding mesh, the edge-binding strip is often manually attached to the side of the mesh, and then the long strip is bent into a rectangle to completely wrap the side of the mesh. However, it is difficult to ensure that the side is flush after bending the edge-binding strip, resulting in low efficiency of manual edge-binding.

[0003] Wrinkles and gaps: Due to the use of magnetic materials, which are generally spaced out, the edge fabric will inevitably shift when sealed at this point, causing wrinkles and affecting the appearance quality. In severe cases, gaps may appear. Previously, edge fabrics were single-layered, making these problems particularly pronounced.

[0004] A search revealed that CN110747589A discloses a device for folding edge fabric. This device uses a first guide assembly and a second guide assembly, along with a housing, to fold the edge fabric. However, this folding method is currently only applicable to single-layer edge fabrics. Furthermore, during the folding process, the V-grooves on the folding section and the second guide assembly have obvious inflection points, which easily cause wear, scratches, or even cuts to the edge fabric, resulting in poor edge fabric folding quality and consequently, poor product appearance. Additionally, no prior art discloses a double-layer edge fabric structure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the problem that existing single-layer edge fabric is prone to deviation and leakage, and that existing edge fabric is prone to scratches or even cuts when folded.

[0006] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0007] A screen door edge fabric folding device includes an edge fabric and an edge fabric folding mechanism;

[0008] The edge fabric includes edge fabric one, edge fabric two, and edge fabric three. The connecting section of edge fabric one and edge fabric two is provided with linear creases. Edge fabric three is suitable for holding magnetic strips / blocks and edge fabric three is bonded or connected to the side of edge fabric two that is opposite to edge fabric one by sewing thread.

[0009] The edge fabric folding mechanism includes:

[0010] A folding section 1 is suitable for initially folding edge fabric 1 and edge fabric 2 along linear creases. Folding section 1 includes a folding cylinder. The edge fabric inlet size of the folding cylinder is larger than the edge fabric outlet size. A guide cone is provided at the edge fabric inlet of the folding cylinder, which bulges outward and gradually moves towards the center of the folding cylinder along the edge fabric conveying direction. The guide cone is suitable for pressing edge fabric 3, which holds magnetic strips / blocks, inward along the edge fabric conveying direction to edge fabric 2. The part of the folding cylinder corresponding to edge fabric 2 gradually indents inward along the edge fabric conveying direction to form a folding crease. The folding crease is suitable for matching the linear crease.

[0011] A second folding section is provided for the final folding of the initially folded edge fabric 1 and edge fabric 2 along the outer periphery of the inner magnetic strip / block of edge fabric 3. The second folding section includes a folding frame arranged at the tail of the folding cylinder. An opening is provided on one side of the folding frame. The opening is suitable to be located on the same side as the guide cone and is suitable for the entry of the mesh and magnetic strip / block. A downwardly extending protrusion 1 is provided at the top of the opening and an upwardly extending protrusion 2 is provided at the bottom. The protrusion 1 and the protrusion 2 are respectively suitable for guiding and positioning the two linear creases of edge fabric 1 and edge fabric 2. The protrusion 1 gradually approaches the protrusion 2 along the edge fabric conveying direction until it is located directly above the protrusion 2.

[0012] Specifically, the edge fabric is divided into four parts: edge fabric one, edge fabric two, edge fabric three, and linear folds. Edge fabric two is easily folded inwards along the linear folds towards edge fabric one, completely wrapping edge fabric one around the outside of edge fabric two. Edge fabric two then wraps around the outside of edge fabric three, completing the magnetic strip and edge sealing process in one step through double-layer wrapping. This double-layer wrapping allows edge fabric one to have a compensating portion, which, when the two corresponding magnetic strips are attracted, seals the gap, achieving a "seamless" effect. Edge fabric one and edge fabric two provide double-layer protection for the side of the mesh. Simultaneously, the linear folds give the double-layer edge fabric a certain degree of rigidity after folding, reducing its toughness to some extent. This avoids the problem of deviation that often occurs with single-layer edge fabrics due to their poor rigidity and good toughness, even with added limiting structures. Therefore, this invention ensures linear conveying during the edge sealing process. The initial folding and final folding are performed using a folding tube and a folding frame, respectively. After the initial folding, the second and third edge fabrics are completely inserted into the inside of the first edge fabric through the linear creases. The folding frame aligns the two linear creases vertically and attaches them to both sides of the mesh. Due to the special design of the tail of the folding frame, the second edge fabric can be wrapped around the outside of the third edge fabric to linearly fix the magnetic strip, so that the second edge fabric will not wrinkle during the subsequent edge sealing process.

[0013] In a preferred embodiment, the top of the folding frame gradually approaches the bottom of the folding frame along the side fabric conveying direction, near the first protrusion. The top of the tail of the folding frame is adapted to press the first and second side fabrics together until the second side fabric is wrapped around the outside of the magnetic strip / block.

[0014] In a preferred embodiment, the inner center of the folding frame is equipped with a guide conveying structure suitable for conveying and positioning the inner top edge fabric and the internal magnetic strip / block. The guide conveying structure includes a raised section facing the opening and a guide wheel facing the opening.

[0015] In a preferred embodiment, the spacing between the two fold lines gradually decreases along the edge fabric conveying direction, and a limiting groove is provided between the two fold lines. The limiting groove is suitable for conveying the edge fabric containing the magnetic strip / block along the edge fabric conveying direction.

[0016] In a preferred embodiment, the two fold lines located at the tail of the folding cylinder are adapted to the top and bottom of the folding frame edge fabric inlet through a transition structure. The inlet of the transition structure is adapted to the tail of the folding cylinder, and the outlet of the transition structure is adapted to the inlet of the folding frame. The two protrusions at the tail of the two fold lines and the edge fabric inlet of the folding frame are adapted to the unobstructed transport of the initially folded edge fabric through the transition structure.

[0017] In a preferred embodiment, an adsorption structure is installed on the outer side of the folded cylinder near the inlet end of the edge fabric. The adsorption structure includes an annular cavity, on which an air pipe connector is installed, and the overlapping area of ​​the annular cavity and the folded cylinder is evenly distributed with micropores for adsorbing the edge fabric.

[0018] In a preferred embodiment, a plurality of the micropores are arranged at the position of the edge fabric conveyed inside the corresponding folding cylinder.

[0019] In a preferred embodiment, the bulge located at the edge fabric inlet of the folding frame gradually increases in width along the edge fabric conveying direction.

[0020] A method for folding the edge fabric of a screen door edge fabric folding device, the steps of which are as follows:

[0021] Step 1: Insert edge cloth 1, edge cloth 2, and edge cloth 3 (containing magnetic strips / blocks) into the edge cloth inlet of the folding cylinder. Edge cloth 3 (containing magnetic strips / blocks) and guide cone are adapted to each other. An external negative pressure generator can be added to the adsorption structure to adsorb edge cloth 1.

[0022] Step Two: Side Fabric 1 and Side Fabric 2 are conveyed along the conveying direction. Side Fabric 3, which holds the magnetic strip / block, is pushed inward by the guide cone that gradually moves towards the center of the folding cylinder, forcing Side Fabric 2 to fold inward towards the inside of Side Fabric 1. The two fold lines will limit the position of the linear fold and guide it during the conveying process. At the same time, Side Fabric 3, which holds the magnetic strip / block, will enter the limiting slot between the two fold lines for guidance during the conveying process. Side Fabric 3 and Side Fabric 2 will continue to move inward towards the inside of Side Fabric 1 along the conveying direction of the fold lines. Meanwhile, the linear fold between Side Fabric 1 and Side Fabric 2 will gradually approach each other along the conveying direction through the fold lines until it comes out from the tail of the folding cylinder and enters the side fabric inlet of the folding frame without obstruction through the transition structure, completing the initial folding of the side fabric.

[0023] Step 3: When the initially folded edge fabric enters the folding frame, edge fabric one and edge fabric two continue to be conveyed along the conveying direction under the action of protrusion one and protrusion two, respectively. At the same time, the protrusion will press edge fabric one towards edge fabric two, causing edge fabric one and edge fabric two to contact and be guided along the conveying direction. The top linear creases of edge fabric one and edge fabric two gradually approach protrusion two along the length of protrusion one until the projections of the top linear creases and bottom linear creases of edge fabric one and edge fabric two on the horizontal plane coincide. At the opening of the edge fabric inlet of the folding frame, the mesh is inserted inward until the side of the mesh is attached to edge fabric three holding the magnetic strip / block, completing the final folding of the edge fabric.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] By setting the edge fabric into four parts—edge fabric one, edge fabric two, edge fabric three, and linear creases—edge fabric two is easily folded inwards along the linear creases towards edge fabric one, completely wrapping edge fabric one around the outside of edge fabric two. Edge fabric two then wraps around the outside of edge fabric three, completing the magnetic strip and edge sealing process in one step through double-layer wrapping. This double-layer edge wrapping allows edge fabric one to have a compensating portion, which, when the two corresponding magnetic strips are attracted, seals the gap, achieving a "seamless" effect. Edge fabric one and edge fabric two provide double-layer protection for the side of the mesh. Simultaneously, the linear creases give the double-layer edge fabric a certain degree of rigidity after folding, reducing its toughness to some extent. This avoids the problem of deviation that often occurs with single-layer edge fabrics due to their poor rigidity and good toughness, even with added limiting structures. Therefore, this invention ensures linear conveying during the edge sealing process. The initial and final folds are performed using a folding tube and a folding frame, respectively. After the initial fold, edge fabric two and edge fabric three are completely inserted into the inside of edge fabric one through linear creases. The folding frame aligns the two linear creases vertically and adheres them to both sides of the mesh. Due to the special design of the tail of the folding frame, edge fabric two can be wrapped around the outside of edge fabric three, thus linearly fixing the magnetic strip and preventing wrinkles from appearing in edge fabric two during subsequent edge sealing. This application eliminates the possibility of edge fabric scratches by eliminating obvious inflection points during the folding process.

[0026] The innovations of this invention are: 1) the structural design of the double-layer side fabric; 2) how to ensure that the second and third side fabrics in the double-layer side fabric are folded inward along the linear creases towards the first side fabric; 3) the vertical alignment of the linear creases after folding and the tight wrapping of the inner magnetic strip by the second side fabric at the same time; 4) how to ensure that the first side fabric has a compensation function and that the compensation amount is consistent along the edge sealing length direction, so as to eliminate the phenomenon of gaps in the magnetic screen door during use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the edge fabric folding mechanism of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of the folding cylinder of the edge fabric folding mechanism of the present invention;

[0029] Figure 3 This is a left view of the folding cylinder of the edge fabric folding mechanism of the present invention;

[0030] Figure 4 This is a schematic diagram of the overall structure of the folding frame in the edge fabric folding mechanism of the present invention;

[0031] Figure 5 This is a diagram showing the working condition of the folding frame folding the edge fabric in the edge fabric folding mechanism of the present invention.

[0032] Figure 6 This is a top view of the folding frame along the opening in the edge fabric folding mechanism of the present invention;

[0033] Figure 7 This is a bottom view of the folding frame along the opening in the edge fabric folding mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the double-layered edge fabric before folding, according to the present invention.

[0035] Figure 9 This is a schematic diagram of the overall structure of the cutting device of the present invention;

[0036] Figure 10 This is a schematic diagram of the cutting device of the present invention during clamping and conveying.

[0037] Figure 11 This is a schematic diagram of the cutting device of the present invention during clamping, conveying, and cutting.

[0038] Figure 12 This is a partial enlarged view of the clamping, conveying, and cutting section of the cutting device of the present invention;

[0039] Figure 13 This is a cross-sectional view of the unidirectional rotation structure at the flexible clamping member of the present invention;

[0040] Figure 14 This is a schematic diagram of the internal structure of the cutting component of the present invention;

[0041] Figure 15 This is a schematic diagram of the internal structure of the compensation component of the present invention;

[0042] Figure 16 This is a top view of the cutting device of the present invention during clamping and conveying;

[0043] Figure 17 This is a schematic diagram of the overall structure of the folding cylinder with an adsorption structure of the edge fabric folding mechanism of the present invention.

[0044] Figure 18This is a three-dimensional structural diagram of the edge fabric three in the edge fabric of the present invention (the direction of the arrow indicates the direction of magnetic strip insertion);

[0045] Figure 19 This is a schematic diagram of the opening (top) and closing (bottom) structure of the screen door after edge sealing according to the present invention. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Example 1: A screen door edge fabric folding device, such as... Figure 1 and Figure 2 As shown, it includes edge fabric 500 and edge fabric folding mechanism.

[0049] like Figure 8 As shown, the edge fabric 500 includes edge fabric one 501, edge fabric two 502, and edge fabric three 503. The connecting section of edge fabric one 501 and edge fabric two 502 is provided with a linear crease 504. Edge fabric three 503 is suitable for holding magnetic strips / blocks and is bonded or sewn to the side of edge fabric two 502 opposite to edge fabric one 501. The linear crease 504 is a non-epoxy layer area, and the rest of the edge fabric is an epoxy layer area.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the edge fabric folding mechanism includes:

[0051] A folding section one is suitable for initially folding selvage 1 501 and selvage 2 502 along linear creases 504. The folding section one includes a folding tube 605, such as... Figure 2 and Figure 3As shown, the inlet size of the folding cylinder 605 is larger than the outlet size of the folding cylinder 605. The inlet of the folding cylinder 605 is provided with a guide cone 606 that bulges outward and gradually moves towards the middle of the folding cylinder 605 along the folding cylinder conveying direction. The guide cone 606 is suitable for squeezing the folding cylinder 605 containing the magnetic strip / block 503 inward along the folding cylinder conveying direction to squeeze the folding cylinder 605 containing the magnetic strip / block 502 inward. The part of the folding cylinder 605 corresponding to the folding cylinder 605 gradually indents inward along the folding cylinder conveying direction to form a fold line 607. The fold line 607 is suitable for matching the linear fold line 504.

[0052] Folding section two is suitable for the final folding of the initially folded edge fabric 1 501 and edge fabric 2 502 along the outer periphery of the inner magnetic strip / block of edge fabric 3 503. Folding section two includes a folding frame 608 arranged at the tail of the folding tube 605, such as... Figure 4 and Figure 5 As shown, an opening is provided on one side of the folding frame 608. The opening is adapted to be located on the same side as the guide cone 606 and is adapted to allow the mesh and magnetic strip / block to enter. A downwardly extending protrusion 609 is provided at the top of the opening and an upwardly extending protrusion 610 is provided at the bottom. The protrusion 609 and the protrusion 610 are adapted to guide and position the two linear creases 504 of the edge fabric 501 and the edge fabric 502, respectively. The protrusion 609 gradually approaches the protrusion 610 along the edge fabric conveying direction until it is located directly above the protrusion 610.

[0053] The folding frame 608 is equipped with a guide plate on the side near the outlet end of the folding cylinder 605 to position and transport the edge cloth 3 503 containing the magnetic strip / block. The guide plate and the subsequent guide wheel together accurately transport the magnetic strip.

[0054] The folding cylinder 605 folds edge fabric 2 502 and edge fabric 3 503 inwards along the linear crease 504 towards edge fabric 1 501. During folding, the guide cone 606 first presses edge fabric 3 503, which holds the magnetic strip / block, inwards along the edge fabric conveying direction to edge fabric 2 502. As the pressing depth of edge fabric 3 503 into edge fabric 2 502 continues to be input, edge fabric 2 502 and edge fabric 1 501 are folded along the linear crease 504. The resulting linear crease... 504 is linearly conveyed along the fold line 607, so that the two linear fold lines 504 gradually move closer to each other in the direction of the folding frame 608. Before the two linear fold lines 504 overlap in the horizontal plane projection, the mesh is fed in so that its side abuts the bottom side of the side of the edge fabric 3 503. The linear fold lines 504 are used to convey forward along the protrusion 1 609 and protrusion 2 610. The two linear fold lines 504 will be gradually brought closer and eventually enter the tail, and then the subsequent sealing is performed.

[0055] Example 2, based on the above examples, makes the following improvements, such as... Figure 5As shown, the top of the folding frame 608, near the protrusion 609, gradually approaches the bottom of the folding frame 608 along the side fabric conveying direction. The top of the tail of the folding frame 608 is adapted to press side fabric 501 and side fabric 502 together until side fabric 502 wraps around the outside of the magnetic strip / block. By pressing and wrapping the magnetic strip on the open side with side fabric 502, the magnetic strip will not deflect or move after subsequent sealing.

[0056] Example 3, based on the above examples, makes the following improvements: A guiding conveying structure suitable for the inner top edge fabric 501 and for positioning the internal magnetic strip / block is installed on the inner center of the folding frame 608 along the edge fabric conveying direction. The guiding conveying structure includes a raised section facing the opening and guide wheels directly opposite the opening. The width of the raised section at the edge fabric inlet of the folding frame 608 gradually increases along the edge fabric conveying direction. The raised section, guide wheels, and front-mounted guide plate ensure stable, linear conveying of the magnetic strip.

[0057] Example 4, based on the above examples, makes the following improvements, such as... Figure 2 and Figure 3 As shown, the distance between the two fold lines 607 gradually decreases along the side fabric conveying direction, and a limiting groove 611 is provided between the two fold lines 607. The limiting groove 611 is suitable for conveying the side fabric 3 503 containing the magnetic strip / block along the side fabric conveying direction.

[0058] Example 5, based on the above examples, makes the following improvements, such as... Figure 1 and Figure 4 As shown, the two fold lines 607 located at the tail of the folding cylinder 605 are respectively adapted to the top and bottom of the edge fabric inlet of the folding frame 608 through a transition structure. The inlet of the transition structure is adapted to the tail of the folding cylinder 605, and the outlet of the transition structure is adapted to the inlet of the folding frame 608. The protrusions 609 and 610 at the tail of the two fold lines 607 and the edge fabric inlet of the folding frame 608 are adapted to facilitate unobstructed transport of the initially folded edge fabric 500 through the transition structure.

[0059] Example 6, based on the above examples, makes the following improvements, such as... Figure 17 As shown, an adsorption structure 612 is installed on the outer side of the folded cylinder 605 near the edge cloth inlet end. The adsorption structure 612 includes an annular cavity, on which an air pipe connector is installed. The overlapping area of ​​the annular cavity and the folded cylinder 605 is evenly distributed with micropores for adsorbing the edge cloth 500. Several of the micropores are arranged at the positions corresponding to the edge cloth 501 conveyed inside the folded cylinder 605.

[0060] After the edge fabric enters the folding cylinder 605 through the air pipe connector, it is subjected to negative pressure adsorption through the micropores. The negative pressure adsorption can be used to deform the edge fabric 501 in a regular manner along the conveying direction.

[0061] A method for folding the edge fabric of a screen door edge fabric folding device, the steps of which are as follows:

[0062] Step 1: Insert edge cloth 1 501, edge cloth 2 502 and edge cloth 3 503 holding magnetic strips / blocks into the edge cloth inlet of the folding cylinder 605. Edge cloth 3 503 holding magnetic strips / blocks is adapted to the guide cone 606. An external negative pressure generator connected to the adsorption structure 612 can be added to adsorb edge cloth 1 501.

[0063] Step Two: Side fabric 1 501 and side fabric 2 502 are conveyed along the conveying direction. Side fabric 3 503, which holds the magnetic strip / block, is pressed inward by the guide cone 606, which gradually moves towards the center of the folding cylinder 605. This forces side fabric 2 502 to fold inward towards the inside of side fabric 1 501. The two fold lines 607 define the position of the linear fold line 504 and guide it during the conveying process. At the same time, side fabric 3 503, which holds the magnetic strip / block, will enter between the two fold lines 607. The limiting slot 611 guides the conveying process. Along the conveying direction of the fold line 607, the edge fabric 3 503 and edge fabric 2 502 will continue to move into the interior of edge fabric 1 501. At the same time, the linear fold line 504 between edge fabric 1 501 and edge fabric 2 502 will gradually approach along the conveying direction through the fold line 607 until it comes out from the tail of the folding cylinder 605 and enters the edge fabric inlet of the folding frame 608 without obstruction through the transition structure, thus completing the initial folding of the edge fabric 500.

[0064] Step 3: When the initially folded edge fabric 500 enters the folding frame 608, edge fabric 1 501 and edge fabric 2 502 continue to be conveyed along the conveying direction under the action of protrusion 1 609 and protrusion 2 610 respectively. At the same time, the protrusion will press edge fabric 1 501 towards edge fabric 2 502, causing edge fabric 1 501 and edge fabric 2 502 to contact and be guided along the conveying direction. The top linear crease 504 of edge fabric 1 501 and edge fabric 2 502 gradually approaches protrusion 2 610 along the length direction of protrusion 1 609 until the projections of the top linear crease 504 and bottom linear crease 504 of edge fabric 1 501 and edge fabric 2 502 on the horizontal plane coincide. At the opening of the edge fabric inlet of the folding frame 608, the mesh is inserted inward until the side of the mesh is attached to edge fabric 3 503 holding the magnetic strip / block, completing the final folding of edge fabric 500.

[0065] Example 7, based on the above examples, makes the following improvements: Figures 10 to 16As shown, before step one, the process also includes online continuous conveying of the mesh and edge fabric and cutting them to a fixed length. The cutting process is completed by a cutting device. By cutting the mesh and edge fabric to a fixed length, the lengths of the two are consistent, eliminating the waste of edge fabric in the previous continuous edge sealing process of mesh. This saves the company nearly 100,000 meters of edge fabric every year, equivalent to nearly RMB 75,000.

[0066] The cutting device includes a clamping and cutting assembly 10 and a clamping and cutting assembly 20 that move synchronously and continuously convey the mesh and selvage online;

[0067] Both clamping and cutting assembly 10 and clamping and cutting assembly 20 include a conveying section 30 and a clamping section 40 mounted on the conveying section 30. Two flexible clamping members 41 are mounted on the clamping section 40, which are suitable for flexibly clamping the mesh and selvage. A compensating member 11 is mounted on clamping and cutting assembly 10, and a cutting member 21 corresponding to the position of the compensating member 11 is mounted on clamping and cutting assembly 20. The compensating member 11 is suitable for externally tensioning the mesh and selvage clamped by the two flexible clamping members 41. The cutting member 21 is suitable for online cutting of the externally tensioned mesh and selvage at the compensating member 11.

[0068] The mesh is clamped and fixed by two flexible clamping members 41 on the corresponding clamping parts 40 of the clamping and cutting assembly 10 and the clamping and cutting assembly 20. While bringing the clamped mesh closer to each other, it can also tighten and flatten the mesh clamped by the two adjacent clamping parts 40 on the clamping and cutting assembly. When the clamped mesh comes close to each other, wrinkles will appear. At this time, the compensating member 11 between the two flexible clamping members 41 will stretch the mesh outward at this point. Finally, the cutting member will accurately cut the mesh that is tightened during the conveying process at the compensating member 11. The conveying part 30 will use it as the power source for the clamping and conveying assembly to convey the mesh.

[0069] The following improvements are made to the above-mentioned cutting device scheme: two flexible clamping members 41 are symmetrically arranged. Each flexible clamping member 41 includes a rotating rod 411 fixedly installed on the clamping part 40. A torsion spring 412 is installed at the rotation node of the rotating rod 411 and the clamping part 40. A clamping body 413 is rotatably installed at the free end of the rotating rod 411. Both clamping bodies 413 are clamping rollers. Both clamping bodies 413 and the corresponding rotating rod 411 are connected by a one-way rotation structure 415.

[0070] The rotating rod 411 and the clamping part 40 use a torsion spring 412 to ensure that after the clamping bodies 413 on the two rotating rods 411 on the clamping cutting assembly 10 and the clamping cutting assembly 20 clamp the mesh, they will gradually move closer to the center of the clamping part 40 to gather the mesh, thereby gradually tensioning and flattening the mesh jointly clamped by the clamping part 40 and the previous clamping part 40. The one-way rotation structure 415 adopts a ratchet and pawl one-way transmission structure, so that when the compensating member 11 pushes the mesh parts that have contracted and moved closer together after clamping, it can only gather in one direction to the center of the clamping part 40, and it will not loosen even after cutting.

[0071] The compensation component 11 adopts the following scheme: The compensation component 11 includes a vertical guide groove 111 arranged on the clamping part 40 of the clamping and cutting assembly 10 and a wedge block 112 arranged on the frame of the conveying part 30. A guide rod 113 is installed inside the vertical guide groove 111, and one end of the guide rod 113 is exposed outside the clamping part 40. A connecting rod 114 is fixed on the guide rod 113 and is vertically slidably inserted into the inner side of the clamping part 40. A return spring 115 is fitted on the outer side of the connecting rod 114. The bottom of the return spring 115 abuts against the inner side of the clamping part 40. The bottom end of the connecting rod 114 is exposed outside the clamping part 40 and is located between two flexible clamping components 41. A pressure rod 116 is fixedly installed at the bottom of the connecting rod 114 (elastic telescopic rod), and a cutting slit 117 is installed on the pressure rod 116. After cutting, since the connecting rod 114 is an elastic telescopic rod, it will inevitably lose the reaction force it experienced when the mesh was taut. Consequently, while resetting, the connecting rod 414 will also tend to move the pressure rod 116 closer to the cutting piece 21 under the action of its own elastic element. When one end of the guide rod 113 contacts the wedge block 112, it will gradually compress the return spring 115 along the vertical guide groove 111 towards the side closer to the cutting piece 21. The connecting rod 114 will gradually push the mesh outward, making the mesh taut. At this time, the cutting quality is the best. After cutting, the guide rod 113 will disengage from the wedge block 112 and will quickly reset under the action of the return spring 115.

[0072] The cutting component 21 includes a vertical guide groove 211 disposed on the clamping portion 40 of the clamping cutting assembly 20 and a wedge block 212 disposed on the frame of the conveying portion 30. A guide rod 213 is installed inside the vertical guide groove 211, and one end of the guide rod 213 is exposed outside the clamping portion 40. A connecting rod 214 is fixed on the guide rod 213 and slides vertically inside the clamping portion 40. A return spring 215 is fitted on the outside of the connecting rod 214. The bottom of the return spring 215 abuts against the inside of the clamping portion 40. The top end of the connecting rod 214 is exposed outside the clamping portion 40 and is located between two flexible clamping components 41. A cutter 216 is fixedly installed on the top of the connecting rod 214. Under the action of the conveying section 30, the guide rod 213 contacts the wedge block 212 and gradually compresses the return spring 215 along the vertical guide groove 211, forcing the cutter 216 to move towards the cutting seam 117 to cut the tensioned mesh. After cutting, the guide rod 213 disengages from the wedge block 212 and quickly returns to its original position under the action of the return spring 215. The cutter 216 can be replaced by an electric heating wire. Since the electric heating wire will quickly return to its original position under the action of the return spring 215, it is possible to avoid the electric heating wire from re-contacting the cut wire, thus eliminating the impact on the cutting quality of the cutting seam. Before the cutter 216 moves after the guide rod 213 and the wedge block 212 come into contact, the pressure rod 116 reaches its maximum stroke after the guide rod 113 and the wedge block 112 come into contact. The cutter 216 will reset 0.1 to 0.5 seconds before the pressure rod 116 resets. The side wall of the wedge block 112 and the wedge block 212 away from the net end is offset 0.1 to 0.3 mm in the vertical direction.

[0073] The conveying section 30 includes two parallel conveyor belts, and the clamping section 40 includes a connecting plate mounted longitudinally across the two conveyor belts. The assembly structure of the conveyor belts and the connecting plate ensures the synchronous movement of the clamping and cutting assembly 10 and the clamping and cutting assembly 20. The clamping section 40 is a plate mounted longitudinally across the two conveyor belts.

[0074] The process of the cutting device cutting the mesh and selvage is as follows:

[0075] S100: One end of the mesh and edge fabric is cut and trimmed according to the design dimensions and fed into the cutting equipment. Rollers are installed at the feeding end of the cutting equipment to maintain a certain resistance at the feeding end, ensuring that the mesh and edge fabric do not curl or bend significantly during the feeding process. Clamping and cutting component 10 and clamping and cutting component 20 clamp the mesh and edge fabric through two conveying sections 30 and convey them towards the cutting station. The flexible clamping component 41 near the cutting station first clamps the mesh and edge fabric and moves it away from the cutting station. In the lateral movement, the mesh and selvage held by the flexible clamping member 41 on the side away from the cutting station of the previous clamping part 40 and the flexible clamping member 41 on the side near the cutting station of the current clamping part 40 are stretched and flattened in the opposite direction online. Then, the flexible clamping member 41 on the side away from the cutting station will clamp the mesh and selvage again, separating them from the mesh and selvage held by the flexible clamping member 41 on the side near the cutting station. At the same time, the flexible clamping member 41 on the side away from the cutting station will push the mesh and selvage forward and supply them.

[0076] S200: After the mesh and edge fabric are clamped and conveyed to the cutting station, the positions of wedge block 112 and wedge block 212 correspond, and they will simultaneously act to guide rod 113 to slide vertically along vertical guide groove 111, compressing spring 115 and connecting rod 114 to push pressure rod 116 outward to push the mesh and edge fabric, and guide rod 213 to slide vertically along vertical guide groove 211, compressing spring 215 and connecting rod 214 to push cutter 216 outward to precisely cut the mesh and edge fabric at the cutting seam 117. The mesh and edge fabric at this point are the mesh and edge fabric clamped between the flexible clamping part 41 on the side closer to the cutting station and the flexible clamping part 41 on the side farther from the cutting station in the two clamping parts 40 corresponding to the current position.

[0077] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A screen door edge fabric folding device, characterized in that, Includes edge fabric (500) and edge fabric folding mechanism; The edge fabric (500) includes edge fabric one (501), edge fabric two (502), and edge fabric three (503). The connecting section of edge fabric one (501) and edge fabric two (502) is provided with linear creases (504). Edge fabric three (503) is suitable for holding magnetic strips / blocks and edge fabric three (503) is bonded or connected by sewing thread to the side of edge fabric two (502) that is away from edge fabric one (501). The edge fabric folding mechanism includes: A folding section one is suitable for initially folding edge fabric one (501) and edge fabric two (502) along the linear crease (504). The folding section one includes a folding cylinder (605). The edge fabric inlet size of the folding cylinder (605) is larger than the edge fabric outlet size. A guide cone (606) is provided at the edge fabric inlet of the folding cylinder (605) that bulges outward and gradually moves towards the middle of the folding cylinder (605) along the edge fabric conveying direction. The guide cone (606) is suitable for pressing edge fabric three (503) containing magnetic strips / blocks inward along the edge fabric conveying direction to edge fabric two (502). The part of the folding cylinder (605) corresponding to edge fabric two (502) gradually indents inward along the edge fabric conveying direction to form a folding crease (607). The folding crease (607) is suitable for matching the linear crease (504). A second folding section is provided for the final folding of the initially folded edge fabric 1 (501) and edge fabric 2 (502) along the periphery of the magnetic strip / block inside edge fabric 3 (503). The second folding section includes a folding frame (608) arranged at the tail of the folding cylinder (605). An opening is provided on one side of the folding frame (608). The opening is suitable for being located on the same side as the guide cone (606) and is suitable for the entry of the mesh and magnetic strip / block. A downwardly extending protrusion 1 (609) is provided at the top of the opening, and an upwardly extending protrusion 2 (610) is provided at the bottom. The protrusion 1 (609) and the protrusion 2 (610) are respectively suitable for guiding and positioning the two linear creases (504) of edge fabric 1 (501) and edge fabric 2 (502). The protrusion 1 (609) gradually approaches the protrusion 2 (610) along the edge fabric conveying direction until it is located directly above the protrusion 2 (610). An adsorption structure (612) is installed on the outer side of the folded cylinder (605) near the inlet end of the edge cloth. The adsorption structure (612) includes an annular cavity, on which a tracheal connector is installed. The overlapping area of ​​the annular cavity and the folded cylinder (605) is evenly distributed with micropores of the adsorption edge cloth (500).

2. The screen door edge fabric folding device according to claim 1, characterized in that, The top of the folding frame (608) is close to the side of the protrusion (609) and gradually moves towards the bottom of the folding frame (608) along the side fabric conveying direction. The top of the tail of the folding frame (608) is suitable for pressing the side fabric (501) and the side fabric (502) to the outside of the magnetic strip / block.

3. The screen door edge fabric folding device according to claim 2, characterized in that, The folding frame (608) has a guide conveying structure installed on the inner middle side along the side fabric conveying direction. This structure is suitable for conveying and positioning the inner top side fabric (501) and the internal magnetic strip / block. The guide conveying structure includes a raised section facing the opening and a guide wheel facing the opening.

4. The screen door edge fabric folding device according to claim 3, characterized in that, The distance between the two fold lines (607) gradually decreases along the side fabric conveying direction. A limiting groove (611) is provided between the two fold lines (607). The limiting groove (611) is suitable for conveying the side fabric three (503) containing the magnetic strip / block along the side fabric conveying direction.

5. A screen door edge fabric folding device according to claim 4, characterized in that, The two fold lines (607) located at the tail of the folding cylinder (605) are adapted to the top and bottom of the edge cloth inlet of the folding frame (608) through a transition structure. The inlet of the transition structure is adapted to the tail of the folding cylinder (605), and the outlet of the transition structure is adapted to the inlet of the folding frame (608). The protrusions one (609) and two (610) at the tail of the two fold lines (607) and the edge cloth inlet of the folding frame (608) are adapted to the unobstructed transport of the edge cloth (500) after initial folding through the transition structure.

6. The screen door edge fabric folding device according to claim 1, characterized in that, Several of the micropores are arranged at the position of the side fabric (501) conveyed inside the corresponding folding cylinder (605).

7. A screen door edge fabric folding device according to claim 3, characterized in that, The bulge located at the edge fabric inlet of the folding frame (608) gradually increases in width along the edge fabric conveying direction.

8. A method for folding the edge fabric of a screen door edge fabric folding device, characterized in that, Using the selvage folding device as described in claim 5, the selvage folding method comprises the following steps: Step 1: Insert side cloth 1 (501) and side cloth 2 (502) and side cloth 3 (503) holding the magnetic strip / block into the side cloth inlet of the folding tube (605), and fit the side cloth 3 (503) holding the magnetic strip / block with the guide cone (606); Step 2: Side fabric 1 (501) and side fabric 2 (502) are conveyed along the conveying direction. Side fabric 3 (503) holding the magnetic strip / block is pressed inward by the guide cone (606) that gradually moves towards the center of the folding cylinder (605), forcing side fabric 2 (502) to fold inward towards the inside of side fabric 1 (501). The two fold lines (607) will limit the position of the linear fold line (504) and guide it during the conveying process. At the same time, side fabric 3 (503) holding the magnetic strip / block will enter between the two fold lines (607). The limiting slot (611) guides the conveying process. Along the conveying direction of the fold line (607), the side fabric three (503) and side fabric two (502) will continue to move into the inside of the side fabric one (501). At the same time, the linear fold line (504) between the side fabric one (501) and side fabric two (502) will gradually approach along the conveying direction through the fold line (607) until it comes out from the tail of the folding cylinder (605) and enters the side fabric inlet of the folding frame (608) without obstruction through the transition structure, thus completing the initial folding of the side fabric (500). Step 3: When the initially folded edge fabric (500) enters the folding frame (608), edge fabric one (501) and edge fabric two (502) continue to be conveyed along the conveying direction under the action of protrusion one (609) and protrusion two (610), respectively. At the same time, the protrusion will press edge fabric one (501) towards edge fabric two (502), causing edge fabric one (501) and edge fabric two (502) to contact and be guided along the conveying direction. The top linear crease (504) gradually approaches the second protrusion (610) along the length direction of the first protrusion (609) until the projections of the top linear crease (504) and the bottom linear crease (504) of the first and second side fabrics (502) on the horizontal plane coincide. The mesh is inserted inward at the opening of the side fabric inlet of the folding frame (608) until the side of the mesh is attached to the third side fabric (503) that holds the magnetic strip / block, thus completing the final folding of the side fabric (500).

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