Covered tube assembly and covering machine

Abstract

This invention discloses an edge-binding tube assembly and an edge-binding machine, relating to the field of edge-binding technology. By setting a reciprocating drive mechanism to drive the edge-binding tube away from the needle plate before the edge-binding operation is completed, a cutting position for cutting the edge-binding strip can be formed at the front end of the edge-binding opening of the edge-binding tube. After the edge-binding strip is cut, there is residual edge-binding strip at the front end of the edge-binding opening of the edge-binding tube. When performing edge-binding operations again, it is not necessary to re-feed the edge-binding strip to the edge-binding tube. This solves the problem in existing edge-binding machines where, because the edge-binding tube is fixed, the edge-binding strip needs to be cut at the rear end of the edge-binding tube, thus requiring repeated edge-binding strip feeding. Furthermore, the edge-binding strip is not easily fed smoothly into the edge-binding tube after cutting due to factors such as the edge-binding strip material, the edge-binding strip cutting method, and the roller friction of the roller feeding structure. At the same time, cutting the edge-binding strip at the front end of the edge-binding opening of the edge-binding tube can be matched with any cutting method, enhancing the flexibility of the edge-binding processing operation. The edge-binding machine includes the above-mentioned edge-binding tube assembly.

Description

Technical Field

[0001] This invention relates to the field of edge banding technology, and in particular to an edge banding tube assembly and an edge banding machine. Background Technology

[0002] In existing binding machines, the binding cylinder is fixedly positioned in front of the needle plate. The binding opening of the cylinder abuts against the product to be processed, serving to guide and convey the binding strip downwards towards the needle. Near the end of the binding process, the binding strip is often cut at the tail end of the binding cylinder. After the remaining binding strip in the cylinder has been conveyed, the binding is complete, and there is no binding strip left in the cylinder.

[0003] Because the binding strip is cut at the tail end of the binding tube, a special roller feeding structure is required to refeed the cut binding strip into the binding tube for the next binding process. However, due to factors such as the binding strip material, the binding strip cutting method, and the roller friction of the roller feeding structure, the binding strip may get stuck inside the binding tube, preventing smooth feeding and reducing binding efficiency. For example, for relatively soft binding strips, the front section may fold and get stuck inside the binding tube after cutting, making it impossible for the roller feeding structure to feed it. Furthermore, existing binding strips are mostly cut using a hot-cutting method, which carbonizes the cut edge of the binding strip, causing it to deform. Since the gap in the binding tube is relatively small, the binding strip is difficult to thread and feed inside the tube.

[0004] Therefore, it is necessary to propose a new design scheme for the edge banding cylinder to solve the problem that the edge banding strip is not easily fed smoothly into the edge banding cylinder after being cut due to factors such as the material of the edge banding strip, the cutting method of the edge banding strip, and the roller friction of the roller feeding structure in the existing edge banding machine. Summary of the Invention

[0005] The purpose of this invention is to provide an edge banding tube assembly and an edge banding machine to solve the problem in the existing edge banding machines that the edge banding strip is not easily fed smoothly into the edge banding tube after being cut due to factors such as the material of the edge banding strip, the cutting method of the edge banding strip, and the friction of the rollers in the roller feeding structure.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides an edge-binding tube assembly for installation on an edge-binding machine, comprising:

[0008] The edge-binding tube is used to feed the edge-binding strip under the presser foot.

[0009] A reciprocating drive mechanism is connected to the binding tube and can drive the binding tube to reciprocate along a linear trajectory, so that the binding tube reciprocates between a first state and a second state. In the first state, the binding opening of the binding tube is close to the needle plate to abut against the product to be processed and to convey the binding strip below the presser foot. In the second state, the binding opening of the binding tube is away from the needle plate, so that the binding opening of the binding tube is separated from the needle plate, and the front end of the binding tube forms a cutting position for cutting the binding strip.

[0010] Preferably, the reciprocating drive mechanism includes:

[0011] A mounting base is used for mounting on the edge banding machine;

[0012] An edge-sealing tube mounting component, on which the edge-sealing tube is mounted;

[0013] A linear drive component is disposed on the fixed base and connected to the edge-binding tube mounting component; the linear drive component is a gear and rack assembly, an electric telescopic rod, an electric slide table or a hydraulic telescopic cylinder, and the linear drive component is used to drive the edge-binding tube mounting component and the edge-binding tube to reciprocate along the linear trajectory relative to the fixed base.

[0014] Preferably, the linear drive component is a gear and rack assembly, which includes:

[0015] A rack is connected to the edge-binding tube mounting component via a rack seat, and at least one of the edge-binding tube mounting component and the rack is slidably engaged with the fixed seat;

[0016] A rotary drive is provided on the fixed base;

[0017] A gear is disposed at the output end of the rotary drive and meshes with the rack. The gear can drive the rack to reciprocate along the linear trajectory under the drive of the rotary drive.

[0018] Preferably, the edging tube mounting component is a linear rail arranged parallel to the rack, the fixing seat has an opening, the linear rail movably passes through the opening and slides with the opening; the front end of the linear rail is connected to the edging tube, and the rear end of the linear rail is connected to the rack through the rack seat.

[0019] Preferably, a slider is further provided between the through-hole and the linear rail; the slider is embedded in the through-hole and slides with the linear rail, or the slider is installed on the linear rail, and the linear rail slides with the through-hole through the slider.

[0020] Preferably, the binding tube assembly further includes a binding tube offset mechanism, which is disposed on the binding machine or the fixed base. The binding tube offset mechanism can drive the binding tube to deviate from the straight trajectory during the process of the binding tube switching from the second state to the first state, and drive the binding tube to return to the straight trajectory before the binding tube switches to the first state.

[0021] Preferably, the tail end of the binding tube is hinged to the binding tube mounting component via a hinge. The binding tube offset mechanism includes a return torsion spring, a roller, and a binding tube trajectory motion seat. The return torsion spring is disposed at the hinge, and the binding tube trajectory motion seat is provided with an arc-shaped protrusion that rolls with the roller. One of the roller and the binding tube trajectory motion seat is disposed on the binding machine or the fixed base, and the other is disposed on the binding tube. During the process of the binding tube switching from the second state to the first state, the roller contacts the arc-shaped protrusion to drive the binding tube to swing around the hinge in a direction deviating from the straight trajectory. Before the binding tube switches to the first state, the return torsion spring drives the binding tube to swing back to the straight trajectory.

[0022] Preferably, the binding cylinder trajectory motion seat is used to be mounted on the binding machine and located on one side of the binding cylinder. The binding cylinder trajectory motion seat is provided with a guide plane facing the binding cylinder. The guide plane extends along the straight trajectory, and the front end of the guide plane is provided with the arc-shaped protrusion. The roller is rotatably mounted on the top or bottom of the binding cylinder. During the reciprocating movement of the binding cylinder along the straight trajectory, the guide plane and the arc-shaped protrusion alternately roll and cooperate with the roller.

[0023] The present invention also proposes an overlock machine, comprising a needle plate, a presser foot, and an overlock tube assembly as described in any one of the above, wherein the overlock tube assembly is mounted on the overlock machine, and the overlock tube is inclinedly disposed above the needle plate.

[0024] Preferably, the binding machine further includes a binding strip correction and positioning device disposed on the needle plate, and the binding strip correction and positioning device is located in front of the presser foot. The binding strip correction and positioning device can form a guide gap with the needle plate. The guide gap can guide the binding strip after the binding strip is cut off at the front end of the binding opening of the binding tube.

[0025] Preferably, the edge banding correction locator is a C-shaped part, an L-shaped part, or a Z-shaped part, and the guide gap is a side-opening notch.

[0026] Preferably, the binding machine further includes a cutting mechanism, which is disposed on the binding machine and located between the needle plate and the binding tube assembly. The cutting mechanism can cut the binding strip from the front end of the binding opening of the binding tube after the binding tube is switched to the second state.

[0027] Preferably, the shearing mechanism is a hot-cutting mechanism.

[0028] Preferably, the shearing mechanism includes:

[0029] A fixed blade is mounted on the overlock machine and located on one side of the needle plate;

[0030] The moving blade assembly includes a moving blade that matches the fixed blade and a lifting drive connected to the moving blade. The moving blade is disposed between the fixed blade and the edge-binding cylinder assembly. The lifting drive is disposed on the edge-binding machine and is used to drive the moving blade to move up and down so that the moving blade cooperates with the fixed blade to cut the edge-binding strip.

[0031] Preferably, the lifting drive component includes:

[0032] Mounting base, provided on the edge banding machine;

[0033] A movable tool holder is disposed on the front side of the mounting base and slides in cooperation with the mounting base, and the top of the movable tool holder is connected to the mounting base through a return lifting spring; the movable tool is mounted on the movable tool holder;

[0034] A lifting motor is located on the back of the mounting base, and the output end of the lifting motor passes through the mounting base and extends to the front of the mounting base;

[0035] A rotating cam is disposed on the front of the mounting base and located above the moving blade holder; the output end of the lifting motor is connected to the rotating cam, and the lifting motor is used to drive the rotating cam to rotate. The rotating cam can press down on the moving blade holder, so that the moving blade and the fixed blade cooperate to cut the edge banding strip; the reset lifting spring can automatically lift the moving blade holder after the rotating cam removes the pressure on the moving blade holder, so that the moving blade and the fixed blade separate.

[0036] The present invention achieves the following technical effects compared to the prior art:

[0037] The binding tube assembly proposed in this invention has a novel and reasonable structure. By setting a reciprocating drive mechanism to drive the binding tube away from the needle plate before the binding operation is completed, a cutting position for cutting the binding strip can be formed at the front end of the binding opening of the binding tube. After the binding strip is cut, the binding strip always runs through the binding tube, and there is always a remaining binding strip at the front end of the binding opening of the binding tube. When performing the binding operation again, there is no need to refeed the binding strip to the binding tube. This solves the problem in existing binding machines where, because the binding tube is fixed, the binding strip needs to be cut at the rear end of the binding tube, which requires repeated feeding of the binding strip. Furthermore, the binding strip is not easily fed smoothly into the binding tube after being cut due to factors such as the material of the binding strip, the cutting method of the binding strip, and the friction of the rollers in the roller feeding structure. Compared with existing technologies, this invention not only improves the efficiency of edge banding operations, but also allows for the cutting of edge banding strips at the front end of the edge banding tube, which can be matched with any form of cutting method, such as hot cutting, moving and fixed blade group cutting, manual hand-held scissors cutting, etc. This breaks the limitations of existing hot cutting methods on the feeding of edge banding strips and enhances the flexibility of edge banding processing operations.

[0038] In some of the technical solutions disclosed in this invention, an edge-binding tube offset mechanism is also configured in the edge-binding tube assembly. Under the combined action of the reciprocating drive mechanism and the edge-binding tube offset mechanism, the edge-binding tube will swing relative to the needle plate once before reaching the position that matches the needle plate each time. This allows the edge-binding strip at the front end of the edge-binding tube to bypass the presser foot and enter between the presser foot and the needle plate in a swinging manner. This is beneficial for the edge-binding strip to directly abut against the product to be processed in one go, without the need for manual straightening or straightening of the edge-binding strip, which helps to improve processing efficiency.

[0039] The present invention also discloses an edge-binding machine having the above-mentioned edge-binding tube assembly, which has all the features of the above-mentioned edge-binding tube assembly, and will not be described in detail here.

[0040] In some of the technical solutions disclosed in this invention, the binding machine is also equipped with a binding strip correction and positioning device on the needle plate. The binding strip correction and positioning device can form a guide gap with the needle plate. This guide gap can replace the limiting function of the binding opening on the binding tube after the binding strip is cut off at the front end of the binding opening of the binding tube and gets away from the guiding function of the binding tube, and continue to guide the binding strip, ensuring that the binding strip on the product to be processed is always restricted, which is conducive to improving the efficiency and quality of the binding strip finishing process. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of the edge-sealing tube assembly disclosed in the embodiments of the present invention;

[0043] Figure 2 This is a schematic diagram of the rear structure of the edge-sealing tube assembly disclosed in the embodiment of the present invention;

[0044] Figure 3 This is an exploded structural diagram of the edge-sealing tube assembly disclosed in the embodiments of the present invention;

[0045] Figure 4 This is a schematic diagram illustrating the installation principle of the rollers in the edge-sealing cylinder assembly disclosed in an embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the installation of the edge-sealing tube assembly disclosed in the embodiments of the present invention;

[0047] Figure 6 This is a schematic diagram of the edge-binding machine disclosed in the embodiments of the present invention;

[0048] Figure 7 This is a schematic diagram of the installation of the edge banding strip correction and positioning device in the edge banding machine disclosed in the embodiments of the present invention;

[0049] Figure 8 This is a schematic diagram of the edge banding strip correction and positioning device in the edge banding machine disclosed in the embodiments of the present invention;

[0050] Figure 9 This is a schematic diagram of the shearing mechanism in the edge-binding machine disclosed in the embodiments of the present invention.

[0051] In the figure, the attached figures are labeled as follows:

[0052] 1000, Overlock machine; 100, Overlock cylinder assembly; 200, Needle plate; 300, Presser foot; 400, Needle bar assembly; 500, Rotary hook housing assembly; 600, Feed dog; 700, Machine head; 800, Center seat; 900, Oil pan;

[0053] 1. Binding tube; 1-1. Binding opening; 2. Cutting position; 3. Fixing seat; 3-1. Through opening; 3-2. Mounting inclined plate; 4. Rack; 5. Rack seat; 6. Rotary drive; 7. Gear; 8. Linear guide; 9. Slider; 10. Hinge; 10-1. Pin; 11. Return torsion spring; 12. Roller; 13. Binding tube trajectory motion seat; 13-1. Arc-shaped protrusion; 13-2. Guide plane; 14. Roller seat; 15. Roller fixing screw; 16. Roller fixing nut; 17. Washer; 18. Nut; 19. Fastening screw; 20. Binding strip correction positioner; 21. Guide clearance; 22. Fixed blade; 23. Moving blade; 24. Mounting seat; 25. Moving blade seat; 26. Return lifting spring; 27. Lifting motor; 28. Rotary cam. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] One of the objectives of this invention is to provide an edge-binding tube assembly to solve the problem in existing edge-binding machines where the edge-binding strip is not easily fed smoothly into the edge-binding tube after being cut, due to factors such as the material of the edge-binding strip, the cutting method of the edge-binding strip, and the friction of the rollers in the roller feeding structure.

[0056] Another object of the present invention is to provide an edge-binding machine comprising the above-described edge-binding tube assembly.

[0057] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1

[0059] This embodiment provides a binding tube assembly 100, which is installed on a binding machine 1000 and mainly used in conjunction with a presser foot 300 and a needle plate 200. Figures 1-5 As shown, the binding tube assembly 100 mainly includes a binding tube 1 and a reciprocating drive mechanism. The binding tube 1 has a conventional binding tube structure and is used to convey the binding strip below the presser foot 300, while also guiding the binding strip. The reciprocating drive mechanism is connected to the binding tube 1 and can drive the binding tube 1 to reciprocate along a linear trajectory, so that the binding tube 1 switches back and forth between a first state and a second state. In the first state, the binding opening 1-1 of the binding tube 1 is close to the needle plate 200 to abut against the product to be processed on the needle plate 200, conveying the binding strip below the presser foot 300 for binding operations. In the second state, the binding tube 1... 1 is driven away from the needle plate 200 by the reciprocating drive mechanism, and at the same time, the binding opening 1-1 of the binding tube 1 moves away from the needle plate 200, so that the binding opening 1-1 of the binding tube 1 separates from the needle plate 200. Since the binding tube 1 has the function of threading the binding strip, during the process of the binding tube 1 switching from the first state to the second state, the binding tube 1 and the binding strip inside it move relative to each other. When the binding operation is about to be completed, it is necessary to drive the binding tube 1 away from the needle plate 200 to ensure that there is a sufficient gap between the two so that a sufficiently long binding strip is reserved at the front end of the binding opening 1-1 of the binding tube 1. In this way, the binding strip can be cut at the front end of the binding opening 1-1 of the binding tube 1. Figure 5As shown, the binding tube 1 is in the aforementioned second state, and the cutting position 2 of the binding strip is located at the front end of the binding opening 1-1 of the binding tube 1. The cutting position 2 can be flexibly adjusted according to the binding operation, so that after the binding strip is cut, the remaining binding strip on the needle plate 200 can complete the current binding operation. As described above, this solution uses a reciprocating drive mechanism to drive the binding cylinder 1 away from the needle plate 200 before the binding operation is completed. This creates a cutting position 2 at the front end of the binding opening 1-1 of the binding cylinder 1 for cutting the binding strip. After the binding strip is cut, the binding strip always runs through the binding cylinder 1, and there is also an extended binding strip at the front end of the binding opening 1-1 of the binding cylinder 1. When performing the binding operation again, the reciprocating drive mechanism only needs to restore the binding cylinder 1 to the aforementioned first state, eliminating the need for the binding strip to be re-fed to the binding cylinder 1. This solves the problem in existing binding machines where, due to the fixed binding cylinder, the binding strip needs to be cut at the rear end of the binding cylinder, requiring repeated feeding of the binding strip. Furthermore, the binding strip is not easily fed smoothly into the binding cylinder after being cut due to factors such as the binding strip material, the binding strip cutting method, and the roller friction of the roller feeding structure. Compared with existing technologies, this solution not only improves the efficiency of edge banding operations, but also allows for the cutting of the edge banding strip at the edge banding opening 1-1 of the edge banding cylinder 1. This can be matched with any form of cutting method, such as hot cutting, moving and fixed blade group cutting, and manual hand-held scissors cutting. This breaks the limitations of existing hot cutting methods on the feeding of edge banding strips and enhances the flexibility of edge banding processing operations.

[0060] In this embodiment, the aforementioned reciprocating drive mechanism specifically includes a fixed base 3, an edge-binding tube mounting component, and a linear drive component. The fixed base 3 is used to be mounted on the edge-binding machine 1000, and is generally mounted on the operating table of the edge-binding machine 1000, near the presser foot 300. The edge-binding tube 1 is mounted on the edge-binding tube mounting component. The linear drive component is disposed on the fixed base 3 and connected to the edge-binding tube mounting component. The linear drive component is used to drive the edge-binding tube mounting component and the edge-binding tube 1 to reciprocate along a linear trajectory relative to the fixed base 3, thereby achieving the purpose of driving the edge-binding tube 1 to switch between the first state and the second state.

[0061] In this embodiment, the linear drive component can be, but is not limited to, a rack and pinion assembly, an electric telescopic rod, an electric slide, or a hydraulic telescopic cylinder. The following description uses a rack and pinion assembly as an example of a linear drive component. Figures 1-3As shown, when the linear drive is a rack and pinion assembly, it specifically includes a rack 4, a rotary drive 6, and a gear 7. The rack 4 is a straight rack, connected to the aforementioned hemming tube mounting component via a rack seat 5. At least one of the hemming tube mounting component and the rack 4 is slidably engaged with the fixed base 3. Thus, the fixed base 3 can support and mount the hemming tube mounting component and / or the rack 4, and the sliding engagement between the hemming tube mounting component and / or the rack 4 and the fixed base 3 can guide the movement direction of the hemming tube mounting component and / or the rack 4, ensuring the linear reciprocating motion of the hemming tube 1. The rotary drive 6 is mounted on the fixed base 3, and the gear 7 is located at the output end of the rotary drive 6 and meshes with the rack 4. The gear 7 can drive the rack 4 to reciprocate along a linear trajectory under the drive of the rotary drive 6. The rotary drive 6 can be, but is not limited to, a stepper motor or a rotary handwheel.

[0062] Furthermore, in this embodiment, the edge-binding tube mounting component is preferably a linear guide 8 arranged parallel to the rack 4. The fixing base 3 has a through-hole 3-1, through which the linear guide 8 movably passes and slides. The front end of the linear guide 8 passes through the through-hole 3-1 and connects to the edge-binding tube 1, while the rear end of the linear guide 8 is connected to the rack 4 via the rack seat 5. The linear guide 8 and the rack seat 5, as well as the rack 4 and the rack seat 5, are fixedly connected using fastening screws 19. The rack 4 and the linear guide 8 can be arranged at the same height or staggered, depending on the specific structural form of the fixing base 3.

[0063] In this embodiment, to further improve the smoothness of the fit between the linear guide 8 and the through-hole 3-1, a slider 9 is also provided between the through-hole 3-1 and the linear guide 8. The slider 9 can be fixedly embedded in the through-hole 3-1 and slide in fit with the linear guide 8, or the slider 9 can be fixedly installed on the outside of the linear guide 8. The slider 9 extends along the length direction of the linear guide 8 and is long enough. The linear guide 8 slides in fit with the through-hole 3-1 through the slider 9, which can reduce the wear of the linear guide 8. Specifically, in this embodiment, the slider 9 is preferably fixedly embedded in the through-hole 3-1. The slider 9 has a U-shaped structure, and the upper and lower sides of the inner wall of its U-shaped recess are provided with protrusions. The linear guide 8 and the U-shaped recess of the slider 9 are in concave-convex fit. The upper and lower sides of the linear guide 8 are provided with sliding grooves along the length direction of the linear guide 8. The sliding grooves are in concave-convex fit with the protrusions on the inner wall of the U-shaped recess. This structure can effectively guide the movement of the linear guide 8 and prevent the linear guide 8 from deviating from its movement path.

[0064] The following example, using the edge-binding tube assembly 100 installed on the edge-binding machine 1000, will be used to explain the working process and working principle of the edge-binding tube assembly 100.

[0065] Lift the presser foot 300, place the product to be processed on the presser foot 300, and the presser foot 300 falls back. The rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position of the needle plate 200. The binding opening 1-1 abuts against the product to be processed. At this time, the binding tube 1 is in the first state.

[0066] The overlock machine 1000 performs sewing motion. When the overlocking operation is about to end, the overlock machine 1000 pauses the sewing motion, and the rotary drive 6 (stepper motor) drives the guide rail 8 to move the overlocking tube 1 in the opposite direction to switch the overlocking tube 1 to the second state. Then, the shearing mechanism is used to cut the overlocking strip at the front end of the overlocking opening 1-1.

[0067] The binding machine 1000 continues its sewing motion to complete the processing of the remaining binding strip on the needle plate 200.

[0068] After completing the binding and sewing, the presser foot 300 is lifted, and the next product to be processed is placed on the presser foot 300. The presser foot 300 is then lowered, and the rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position on the needle plate 200. The binding edge 1-1 abuts against the product to be processed, and the binding tube 1 returns to the first state. This process is repeated to complete the binding of multiple products.

[0069] The binding tube assembly 100 proposed in this embodiment uses a reciprocating drive mechanism to drive the binding tube away from the needle plate before the binding operation is completed. This creates a cutting position at the front end of the binding tube for cutting the binding strip. After the binding strip is cut, it always passes through the binding tube, and there is always a remaining binding strip at the front end of the binding tube. When performing the binding operation again, there is no need to refeed the binding strip to the binding tube, thus avoiding the binding strip getting stuck inside the binding tube after cutting. Compared with the prior art, this invention not only improves the efficiency of the binding operation, but also allows for cutting the binding strip at the front end of the binding tube, which can be matched with any form of cutting method, such as hot cutting, moving and fixed blade group cutting, and manual hand-held scissors cutting. This breaks the limitations of existing hot cutting methods on the feeding of the binding strip and enhances the flexibility of the binding processing operation.

[0070] Example 2

[0071] In Embodiment 1, by setting a reciprocating drive mechanism to drive the binding tube 1 away from the needle plate 200 before the binding operation is completed, the binding strip can be cut at the front end of the binding opening 1-1 of the binding tube 1, and there will always be binding strip remaining at the front end of the binding opening 1-1 of the binding tube 1. Considering that when performing the binding operation again, if the reciprocating drive mechanism directly drives the binding tube 1 to move straight, when the binding tube 1 reaches the needle plate 200, the binding strip at the front end of the binding tube 1 is likely to hit the presser foot 300 or the needle plate 200, and cannot directly abut against the product to be processed. It is necessary to manually straighten and adjust the binding strip, thereby reducing the binding efficiency. To address this issue, this embodiment, based on the solution in Embodiment 1, further includes an edge-binding tube offset mechanism in the edge-binding tube assembly 100. This offset mechanism is mounted on the edge-binding machine 1000 or the fixed base 3. During the transition from the second state to the first state, the edge-binding tube 1 is first driven to deviate from its straight trajectory (the straight trajectory being the driving trajectory of the reciprocating drive mechanism on the edge-binding tube 1), and before switching back to the first state, it returns the edge-binding tube 1 to its original straight trajectory. Based on this, the edge-binding tube 1 can complete one offset relative to the needle plate 200 before reaching the position compatible with the needle plate 200. This allows the edge-binding strip at the front end of the edge-binding tube 1 to bypass the presser foot 300 and enter between the presser foot 300 and the needle plate 200 in a swinging motion. This facilitates the edge-binding strip directly contacting the product to be processed in one go, eliminating the need for manual straightening and adjustment, thus improving processing efficiency. The aforementioned edge-binding tube offset mechanism can specifically achieve the trajectory deviation and trajectory recovery movements of the edge-binding tube 1 through methods such as swing drive and linear telescopic drive. For example, the edge-binding tube offset mechanism uses a telescopic cylinder, and the entire edge-binding tube assembly 100 is connected to the edge-binding machine 1000 through this telescopic cylinder. At this time, the reciprocating drive mechanism of the edge-binding tube assembly 100 and the telescopic cylinder cooperate to form a two-dimensional adjustment table. During the reciprocating linear motion of the edge-binding tube 1 driven by the reciprocating drive mechanism, the piston rod of the telescopic cylinder extends, thereby causing the edge-binding tube 1 to deviate from the linear trajectory. Then, the piston rod of the telescopic cylinder retracts, thereby causing the edge-binding tube 1 to return to its original linear trajectory. Considering that this telescopic cylinder configuration occupies a large space, this embodiment preferably uses a swing drive to achieve the trajectory deviation and trajectory recovery movements of the edge-binding tube 1, as detailed below:

[0072] like Figures 1-5As shown, the tail end of the binding tube 1 is hinged to the front end of the wire gauge 8 via hinge 10. The binding tube offset mechanism includes a return torsion spring 11, a roller 12, and a binding tube trajectory motion seat 13. The return torsion spring 11 is sleeved on the pin 10-1 of the hinge 10. The binding tube trajectory motion seat 13 is provided with an arc-shaped protrusion 13-1 that rolls with the roller 12. One of the roller 12 and the binding tube trajectory motion seat 13 is mounted on the binding machine 1000 or the fixed base 3, and the other is mounted on... On the binding tube 1, during the process of switching from the second state to the first state, the roller 12 contacts and rolls with the arc-shaped protrusion 13-1. This allows the binding tube 1 to swing around the hinge 10 in a direction deviating from the straight trajectory, thanks to the curvature of the arc-shaped protrusion 13-1. Before the binding tube 1 switches to the first state, the pushing force of the arc-shaped protrusion 13-1 on the roller 12 disappears. At this time, the return torsion spring 11 can be used to drive the binding tube 1 back to the straight trajectory. As described above, the binding tube 1 is connected to the front end of the linear guide 8 via the hinge 10 and the return torsion spring 11, enabling the binding tube 1 to swing around the hinge 10.

[0073] The aforementioned arc-shaped protrusion 13-1 can be a single-sided protrusion, meaning it only has an outward convex trend and no downward trend. After the roller 12 reaches the apex of the protrusion, it will disengage from the arc-shaped protrusion 13-1. At this time, the restoring force of the return torsion spring 11 can be used to drive the edge-sealing cylinder 1 back to the straight trajectory. Alternatively, the arc-shaped protrusion 13-1 can also be a double-sided protrusion, meaning it is wave-shaped with symmetrical outward convex trends on both sides, such as... Figure 4 The arc-shaped protrusion 13-1 shown is a wave-shaped protrusion. After the roller 12 reaches the outer apex of the protrusion, the restoring force of the return torsion spring 11 still drives the binding cylinder 1 to swing back to a straight trajectory. At the same time, under the action of the return torsion spring 11, the roller 12 will still roll and contact the other side of the arc-shaped protrusion 13-1. Compared with a protrusion with a single side protrusion, this contact form can make the swing of the binding cylinder 1 smoother and more reliable. Therefore, in this embodiment, the arc-shaped protrusion 13-1 is preferably set as Figure 4 The wave-shaped bumps shown.

[0074] In the above scheme, when the roller 12 is installed on the binding cylinder 1, the fixed base 3, or the corresponding structure of the binding machine 1000, it is in a state of free rotation. Taking the roller 12 installed on the binding cylinder 1 as an example, as follows... Figure 4As shown, the roller 12 is mounted on the binding cylinder 1 via a roller seat 14, which is fixed to the binding cylinder 1 by a fastening screw 19. A roller fixing screw 15 is provided on the roller seat 14. The outer wall of the roller fixing screw 15 located above the roller seat 14 is a smooth rod, and the roller 12 is movably fitted onto the outside of the smooth rod, allowing it to rotate relative to the smooth rod. The end of the smooth rod is also provided with an internal threaded hole for connecting a roller fixing nut 16, which can limit the axial end of the roller 12. The outer wall of the roller fixing screw 15 located below the roller seat 14 is a threaded rod, which can be threadedly connected to a nut 18, thereby mounting the roller fixing screw 15, roller 12, and roller fixing nut 16 onto the roller seat 14. A washer 17 can also be provided between the nut 18 and the roller seat 14.

[0075] In this embodiment, the binding cylinder trajectory motion seat 13 is preferably disposed on the main beam of the binding machine 1000 and located on one side of the binding cylinder 1. The binding cylinder trajectory motion seat 13 is also provided with a guide plane 13-2 facing the binding cylinder 1. The guide plane 13-2 extends along the aforementioned straight trajectory, and an arc-shaped protrusion 13-1 is provided at the front end of the guide plane 13-2, and the arc-shaped protrusion 13-1 is smoothly connected to the guide plane 13-2. The roller 12 is preferably disposed on the top of the binding cylinder 1. During the reciprocating movement of the binding cylinder 1 along the straight trajectory, the guide plane 13-2 and the arc-shaped protrusion 13-1 alternately roll and contact the roller 12. This structure can effectively guide the movement of the binding cylinder 1, so that the binding cylinder 1 can smoothly swing and return.

[0076] The following example, using the edge-binding tube assembly 100 installed on the edge-binding machine 1000, will be used to explain the working process and working principle of the edge-binding tube assembly 100.

[0077] Lift the presser foot 300, place the product to be processed on the presser foot 300, and the presser foot 300 falls back. The rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position of the needle plate 200. The binding opening 1-1 abuts against the product to be processed. At this time, the binding tube 1 is in the first state.

[0078] The overlock machine 1000 performs sewing motion. When the overlocking operation is about to end, the overlock machine 1000 pauses the sewing motion, and the rotary drive 6 (stepper motor) drives the guide rail 8 to move the overlocking tube 1 in the opposite direction to switch the overlocking tube 1 to the second state. Then, the shearing mechanism is used to cut the overlocking strip at the front end of the overlocking opening 1-1.

[0079] The binding machine 1000 continues its sewing motion to complete the processing of the remaining binding strip on the needle plate 200.

[0080] After completing the binding and sewing, the presser foot 300 is lifted, and the next product to be processed is placed on the presser foot 300. The presser foot 300 is then lowered, and the rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position on the needle plate 200. The binding edge 1-1 abuts against the product to be processed, and the binding tube 1 returns to the first state. This process is repeated to complete the binding of multiple products.

[0081] Each time the binding tube 1 switches to the first state, under the combined action of the reciprocating drive mechanism and the binding tube offset mechanism, the binding tube 1 will swing relative to the needle plate 200 once before reaching the position that matches the needle plate 200. This causes the binding strip at the front end of the binding tube 1 to bypass the presser foot 300 and enter between the presser foot 300 and the needle plate 200 in a swinging manner. This allows the binding strip to directly abut against the product to be processed in one go, without the need for manual straightening or straightening of the binding strip, which helps to improve processing efficiency.

[0082] Example 3

[0083] like Figure 6 As shown, this embodiment proposes an overlock machine 1000, including a needle plate 200, a presser foot 300, and an overlock tube assembly 100 as disclosed in Embodiment 1 or 2. The overlock tube assembly 100 is mounted on the overlock machine 1000, and the overlock tube 1 is inclinedly positioned above the needle plate 200. The overlock tube 1 is mainly used to feed the overlock strip between the needle plate 200 and the presser foot 300. The overlock tube 1 is inclined relative to the needle plate 200, which ensures that the overlock opening 1-1 of the overlock tube 1 can be inclinedly inserted into the front recess of the needle plate 200, so that the lower edge of the overlock opening 1-1 of the overlock tube 1 is flush with the needle plate 200, facilitating the feeding of the fabric into the needle plate 200 at the overlock opening 1-1 of the overlock tube 1. Figure 5 and Figure 6 As shown, the edge-binding tube 1 and the linear guide 8 are coaxially installed. The edge-binding tube 1, the linear guide 8 and the rack 4 are all installed in an inclined state, and the inclination of the three is the same. Accordingly, when the edge-binding tube 1 switches between the first state and the second state, the edge-binding tube 1 is inclined upward and downward in a straight line.

[0084] Considering that both the linear guide 8 and the rack 4 are installed at an angle, in this embodiment, a mounting slant plate 3-1 is provided on the fixed base 3. When the rotary drive 6 uses a stepper motor, its end face is in contact with the mounting slant plate 3-1. The output end of the stepper motor moves through the mounting slant plate 3-1 and is coaxially connected with the gear 7. The gear 7 is a spur gear that is adapted to mesh with the rack 4 (straight rack). The mounting slant plate 3-1 is set at an angle to ensure that the gear 7 can be in an inclined state and mesh with the inclined rack 4.

[0085] The edge-binding machine 1000 is an existing edge-binding device, such as... Figures 5-7As shown, it is equipped with a conventional needle plate 200, presser foot 300, needle bar assembly 400, rotary hook housing assembly 500, feed dog 600, machine head 700, center seat 800, and oil pan 900, etc. The specific structure, layout, and working principle will not be described in detail here. In this embodiment, the binding tube assembly 100 disclosed in Embodiment 1 or 2 is preferably installed on the table of the binding machine 1000 and located on one side of the needle plate 200.

[0086] The edge-binding process of the above-mentioned edge-binding machine 1000 is as follows:

[0087] Lift the presser foot 300, place the product to be processed on the presser foot 300, and the presser foot 300 falls back. The rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position of the needle plate 200. The binding opening 1-1 abuts against the product to be processed. At this time, the binding tube 1 is in the first state.

[0088] The overlock machine 1000 performs sewing motion. When the overlocking operation is about to end, the overlock machine 1000 pauses the sewing motion, and the rotary drive 6 (stepper motor) drives the guide rail 8 to move the overlocking tube 1 in the opposite direction to switch the overlocking tube 1 to the second state. Then, the shearing mechanism is used to cut the overlocking strip at the front end of the overlocking opening 1-1.

[0089] The binding machine 1000 continues its sewing motion to complete the processing of the remaining binding strip on the needle plate 200.

[0090] After completing the binding and sewing, the presser foot 300 is lifted, and the next product to be processed is placed on the presser foot 300. The presser foot 300 is then lowered, and the rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position on the needle plate 200. The binding edge 1-1 abuts against the product to be processed, and the binding tube 1 returns to the first state. This process is repeated to complete the binding of multiple products.

[0091] Example 4

[0092] Based on Embodiment 3, this embodiment also includes a binding strip correction and positioning device 20 on the needle plate 200, and the binding strip correction and positioning device 20 is located in front of the presser foot 300. The binding strip correction and positioning device 20 can form a guide gap 21 with the needle plate 200. This guide gap 21 corresponds to the position of the binding opening 1-1 when the binding tube 1 is in the first state. After the binding strip is cut off at the front end of the binding opening 1-1 of the binding tube 1 and is separated from the guiding function of the binding tube 1, it can replace the limiting function of the binding opening 1-1 on the binding tube 1 and continue to guide the binding strip, which is beneficial to improving the finishing processing efficiency and processing quality of the binding strip.

[0093] In this embodiment, the edge banding correction and positioning device 20 can adopt various shapes and structures, including but not limited to C-shaped, L-shaped, or Z-shaped parts. For example... Figure 7 and Figure 8 As shown, the binding strip correction locator 20 is a Z-shaped rod, one end of which is fixed to the needle plate 200 by a fastening screw 19, and the guide gap 21 formed between the other end and the needle plate 200 is a side-opening notch.

[0094] The edge-binding process of the above-mentioned edge-binding machine 1000 is as follows:

[0095] Lift the presser foot 300, place the product to be processed on the presser foot 300, and the presser foot 300 falls back. The rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position of the needle plate 200. The binding opening 1-1 abuts against the product to be processed. At this time, the binding tube 1 is in the first state.

[0096] The overlock machine 1000 performs sewing motion. When the overlocking operation is about to end, the overlock machine 1000 pauses the sewing motion, and the rotary drive 6 (stepper motor) drives the guide rail 8 to move the overlocking tube 1 in the opposite direction to switch the overlocking tube 1 to the second state. Then, the shearing mechanism is used to cut the overlocking strip at the front end of the overlocking opening 1-1.

[0097] The binding machine 1000 continues its sewing motion. At this time, the binding strip correction and positioning device 20 is set on the needle plate 200. The front end of the binding strip correction and positioning device 20 is a horizontal strip, which can form a guide gap 21 with the needle plate 51. This guide gap 21 can replace the limiting function of the binding opening 1-1 on the binding tube 1 and continue to guide the binding strip, so that all the remaining binding strips are sewn onto the product to be processed, thus completing the sewing.

[0098] After completing the binding and sewing, the presser foot 300 is lifted, and the next product to be processed is placed on the presser foot 300. The presser foot 300 is then lowered, and the rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position on the needle plate 200. The binding edge 1-1 abuts against the product to be processed, and the binding tube 1 returns to the first state. This process is repeated to complete the binding of multiple products.

[0099] It should be noted that when the binding tube 1 is in the first state, the binding strip correction and positioning device 20 and the binding opening 1-1 together serve to guide and limit the binding strip. Moreover, as the binding tube 1 moves away from the needle plate 200, the binding strip correction and positioning device 20 can also provide limiting support for the binding strip. This is because the binding operation on the needle plate 200 is not completed before and during the cutting of the binding strip. Without the supporting and limiting effect of the binding strip correction and positioning device 20, the binding strip would easily be torn from the already sewn part of the binding strip due to the pulling action of the binding tube 1 on the binding strip as the binding tube 1 moves away from the needle plate 200, or the binding strip on the needle plate 200 would deviate from the position of the product to be processed. The binding strip correction and positioning device 20 is located in front of the presser foot 300 and the needle bar assembly 400, which can prevent the binding strip on the needle plate 200 from deviating from the position of the product to be processed or the already sewn part of the binding strip from the product from being to be torn when the binding tube 1 retracts and pulls the binding strip.

[0100] When the binding tube 1 reaches the second state, the binding strip correction positioner 20 can also cooperate with the binding opening 1-1 of the binding tube 1 to limit and support both sides of the cutting position 2 of the binding strip, so that the binding strip at the cutting position 2 is in a relatively straight state, which is conducive to the shearing mechanism to cut quickly and neatly.

[0101] Example 5

[0102] Based on embodiment four or three, this embodiment also includes a cutting mechanism. The cutting mechanism is installed on the binding machine 1000 and located between the needle plate 200 and the binding tube assembly 100. The cutting mechanism can cut the binding strip from the front end of the binding opening 1-1 of the binding tube 1 after the binding tube 1 switches to the second state.

[0103] In this embodiment, the shearing mechanism can be a heat-cutting mechanism based on the burning of a resistance wire, or it can be a mechanical cutting mechanism. The following description uses a mechanical cutting mechanism as an example. Figure 5 and Figure 9 As shown, the cutting mechanism includes a fixed blade 22 and a moving blade assembly. The fixed blade 22 is mounted on the binding machine 1000 and located on one side of the needle plate 200. The moving blade assembly includes a moving blade 23 that matches the fixed blade 22 and a lifting drive connected to the moving blade 23. The moving blade 23 is positioned between the fixed blade 22 and the binding tube assembly 100. The lifting drive is mounted on the binding machine 1000 and is used to drive the moving blade 23 to rise and fall, so that the moving blade 23 cooperates with the fixed blade 22 to cut the binding strip.

[0104] In this embodiment, the lifting drive component can be a linear telescopic component such as a cylinder or hydraulic cylinder. Taking one of these as an example... Figure 9As shown, the lifting drive includes a mounting base 24, a movable blade holder 25, a lifting motor 27, and a rotary cam 28. The mounting base 24 is mounted on the hemming machine 1000. The movable blade holder 25 is located on the front of the mounting base 24 and slides in cooperation with it. The top of the movable blade holder 25 is connected to the mounting base 24 via a return lifting spring 26. The movable blade 23 is mounted on the movable blade holder 25. The lifting motor 27 is located on the back of the mounting base 24, and its output end passes through the mounting base 24 and extends to the front of the mounting base 24. The rotating cam 28 is located on the front of the mounting base 24 and above the moving blade holder 25. The output end of the lifting motor 27 is connected to the rotating cam 28. The lifting motor 27 drives the rotating cam 28 to rotate. When the rotating cam 28 rotates, it can use the cam structure to press the moving blade holder 25 downward, so that the moving blade 23 and the fixed blade 22 cooperate to cut the edge banding strip. The reset lifting spring 26 can automatically lift the moving blade holder 25 after the rotating cam 28 removes the pressure on the moving blade holder 25, so that the moving blade 23 and the fixed blade 22 are separated.

[0105] The edge-binding process of the above-mentioned edge-binding machine 1000 is as follows:

[0106] Lift the presser foot 300, place the product to be processed on the presser foot 300, and the presser foot 300 falls back. The rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position of the needle plate 200. The binding opening 1-1 abuts against the product to be processed. At this time, the binding tube 1 is in the first state.

[0107] The overlock machine 1000 performs sewing motion. When the overlocking operation is about to end, the overlock machine 1000 pauses the sewing motion, and the rotary drive 6 (stepper motor) drives the guide rail 8 to move the overlocking tube 1 in the opposite direction to switch the overlocking tube 1 to the second state. Then, the lifting motor 27 is started to drive the rotary cam 28 to rotate. When the rotary cam 28 rotates, it can use the cam structure to press the moving knife seat 25 downward, so that the moving knife 23 cooperates with the fixed knife 22 to cut the overlock strip at the front end of the overlock opening 1-1. Then, the lifting motor 27 drives the rotary cam 28 to continue rotating. After the rotary cam 28 removes the pressure on the moving knife seat 25, the moving knife seat 25 can be automatically lifted and reset under the action of the reset lifting spring 26, so that the moving knife 23 and the fixed knife 22 are separated.

[0108] After the binding strip is cut, the binding machine 1000 continues its sewing motion. At this time, a binding strip correction and positioning device 20 is installed on the needle plate 200. The front end of the binding strip correction and positioning device 20 is a horizontal strip, which can form a guide gap 21 with the needle plate 51. This guide gap 21 can replace the limiting function of the binding opening 1-1 on the binding tube 1, and continue to guide the binding strip, so that all the remaining binding strip is sewn onto the product to be processed, completing the sewing. It should be noted that when the binding tube 1 is in the first state, the binding strip correction and positioning device 20 and the binding opening 1-1 together play the role of guiding and limiting the binding strip.

[0109] After completing the binding and sewing, the presser foot 300 is lifted, and the next product to be processed is placed on the presser foot 300. The presser foot 300 is then lowered, and the rotary drive 6 (stepper motor) drives the linear guide 8 to move the binding tube 1 to the corresponding position on the needle plate 200. The binding edge 1-1 abuts against the product to be processed, and the binding tube 1 returns to the first state. This process is repeated to complete the binding of multiple products.

[0110] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A cuff assembly for installation on a cuffing machine (1000), characterized in that, include: The edge-sealing tube (1) is used to convey the edge-sealing strip to the area below the presser foot (300); A reciprocating drive mechanism includes a binding tube mounting component and a linear drive component. The binding tube (1) is mounted on the binding tube mounting component. The linear drive component is connected to the binding tube mounting component and can drive the binding tube (1) to reciprocate along a linear trajectory, so that the binding tube (1) switches back and forth between a first state and a second state. In the first state, the binding opening (1-1) of the binding tube (1) is close to the needle plate (200) to abut against the product to be processed and to convey the binding strip below the presser foot (300). In the second state, the edge-sealing opening (1-1) of the edge-sealing tube (1) is away from the needle plate (200) so that the edge-sealing opening (1-1) of the edge-sealing tube (1) is separated from the needle plate (200), and the front end of the edge-sealing tube (1) forms a cutting position (2) for cutting the edge-sealing strip; The edge-binding tube offset mechanism is capable of causing the edge-binding tube (1) to deviate from the straight trajectory during the process of switching the edge-binding tube (1) from the second state to the first state, and causing the edge-binding tube (1) to return to the straight trajectory before switching to the first state; the tail end of the edge-binding tube (1) is hinged to the edge-binding tube mounting component through a hinge (10), and the edge-binding tube offset mechanism includes a reset torsion spring (11), a roller (12) and an edge-binding tube trajectory motion seat (13), the edge-binding tube trajectory motion seat (13) is provided with an arc-shaped protrusion (13-1) and a guide plane (13-2) that roll with the roller (12); the roller One of the column (12) and the binding cylinder trajectory motion seat (13) is set on the binding machine (1000), and the other is set on the binding cylinder (1). The guide plane (13-2) and the arc-shaped protrusion (13-1) alternately roll with the roller (12). During the process of the binding cylinder (1) switching from the second state to the first state, the roller (12) contacts the arc-shaped protrusion (13-1) to drive the binding cylinder (1) to swing around the hinge (10) in a direction deviating from the straight trajectory. Before the binding cylinder (1) switches to the first state, the reset torsion spring (11) drives the binding cylinder (1) to swing back to the straight trajectory.

2. The cuffed assembly of claim 1, wherein, The reciprocating drive mechanism further includes a fixed seat (3) for mounting on the hemming machine (1000); the linear drive component is disposed on the fixed seat (3); the linear drive component is a gear and rack assembly, an electric telescopic rod, an electric slide or a hydraulic telescopic cylinder, and the linear drive component is used to drive the hemming tube mounting component and the hemming tube (1) to reciprocate relative to the fixed seat (3) along the linear trajectory.

3. The cuffed assembly of claim 2, wherein, The linear drive component is a gear and rack assembly, which includes: A rack (4) is connected to the edge-binding tube mounting component via a rack seat (5), and at least one of the edge-binding tube mounting component and the rack (4) is slidably engaged with the fixed seat (3); A rotary drive (6) is mounted on the fixed base (3); A gear (7) is disposed at the output end of the rotary drive (6) and meshes with the rack (4). The gear (7) can drive the rack (4) to reciprocate along the linear trajectory under the drive of the rotary drive (6).

4. The cuffed assembly of claim 3, wherein, The edging tube mounting component is a linear rail (8) arranged parallel to the rack (4). The fixing seat (3) has an opening (3-1). The linear rail (8) moves through the opening (3-1) and slides with the opening (3-1). The front end of the linear rail (8) is connected to the edging tube (1), and the tail end of the linear rail (8) is connected to the rack (4) through the rack seat (5).

5. The cuffed assembly of claim 4, wherein, A slider (9) is also provided between the opening (3-1) and the rail (8); the slider (9) is embedded in the opening (3-1) and slides with the rail (8), or the slider (9) is installed on the rail (8) and the rail (8) slides with the opening (3-1) through the slider (9).

6. The bound tub assembly of any one of claims 2-5, wherein, The edge-binding tube offset mechanism is mounted on the edge-binding machine (1000).

7. The cuffed assembly of claim 6, wherein, The reset torsion spring (11) is located at the hinge (10).

8. The cuffed assembly of claim 7, wherein, The binding cylinder trajectory motion seat (13) is used to be mounted on the binding machine (1000) and located on one side of the binding cylinder (1). The binding cylinder trajectory motion seat (13) is provided with a guide plane (13-2) facing the binding cylinder (1). The guide plane (13-2) extends along the straight trajectory. The front end of the guide plane (13-2) is provided with the arc-shaped protrusion (13-1). The roller (12) is rotatably mounted on the top or bottom of the binding cylinder (1). During the reciprocating movement of the binding cylinder (1) along the straight trajectory, the guide plane (13-2) and the arc-shaped protrusion (13-1) alternately roll and cooperate with the roller (12).

9. A hemming machine characterized by, It includes a needle plate (200), a presser foot (300), and an edge-binding tube assembly (100) as described in any one of claims 1 to 8, wherein the edge-binding tube assembly (100) is mounted on the edge-binding machine (1000), and the edge-binding tube (1) is inclinedly disposed above the needle plate (200).

10. The tumbler of claim 9, wherein, It also includes a binding strip correction locator (20) disposed on the needle plate (200), and the binding strip correction locator (20) is located in front of the presser foot (300). The binding strip correction locator (20) can form a guide gap (21) with the needle plate (200). The guide gap (21) can guide the binding strip after the binding strip is cut off at the front end of the binding opening (1-1) of the binding tube (1).

11. The tumbler of claim 10, wherein, The edge trim correction locator (20) is a C-shaped part, an L-shaped part or a Z-shaped part, and the guide gap (21) is a side-opening notch.

12. The edger of any one of claims 9 to 11, wherein, It also includes a cutting mechanism, which is disposed on the binding machine (1000) and located between the needle plate (200) and the binding tube assembly (100). The cutting mechanism is capable of cutting the binding strip from the front end of the binding opening (1-1) of the binding tube (1) after the binding tube (1) is switched to the second state.

13. The tumbler of claim 12, wherein, The shearing mechanism includes: A fixed blade (22) is disposed on the overlock machine (1000) and located on one side of the needle plate (200); The moving blade assembly includes a moving blade (23) that matches the fixed blade (22) and a lifting drive connected to the moving blade (23). The moving blade (23) is disposed between the fixed blade (22) and the edge-binding tube assembly (100). The lifting drive is disposed on the edge-binding machine (1000) and is used to drive the moving blade (23) to rise and fall so that the moving blade (23) cooperates with the fixed blade (22) to cut the edge-binding strip.

14. The tumbler of claim 13, wherein, The lifting drive component includes: Mounting base (24) is provided on the edge banding machine (1000); A movable blade holder (25) is disposed on the front side of the mounting base (24) and slides in cooperation with the mounting base (24). The top of the movable blade holder (25) is connected to the mounting base (24) through a reset lifting spring (26). The movable blade (23) is mounted on the movable blade holder (25). A lifting motor (27) is disposed on the back of the mounting base (24), and the output end of the lifting motor (27) passes through the mounting base (24) and extends to the front of the mounting base (24); A rotating cam (28) is disposed on the front of the mounting base (24) and located above the moving blade holder (25); the output end of the lifting motor (27) is connected to the rotating cam (28), and the lifting motor (27) is used to drive the rotating cam (28) to rotate. The rotating cam (28) can press the moving blade holder (25) downward, so that the moving blade (23) and the fixed blade (22) cooperate to cut the edge strip; the reset lifting spring (26) can automatically lift the moving blade holder (25) after the rotating cam (28) removes the pressure on the moving blade holder (25), so that the moving blade (23) and the fixed blade (22) separate.

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