U-shaped nylon backstop pressure welding assembly and upper backstop machine

Abstract

The utility model discloses a U-shaped nylon backstop pressure welding assembly and an upper backstop machine, the pressure welding assembly comprises a first lifting mechanism, an ultrasonic welding assembly driven by the first lifting mechanism to ascend and descend and a forming material pressing assembly, and the ultrasonic welding assembly is provided with a welding head and an ultrasonic generator connected and matched with the welding head; the forming pressing assembly comprises a forming pressing block opposite to the end face of the welding head and a second lifting mechanism driving the forming pressing block to ascend and descend. The welding head and the forming pressing block are matched to form two symmetrical working openings used for forming and assembling the U-shaped nylon backstop. The material clamping position is driven by the first lifting mechanism to ascend and descend, the second lifting mechanism drives the forming pressing block to move relative to the end face of the welding head, and then the size of the working opening is adjusted. According to the material pressing assembly and the backstop machine, the structural design is simplified, the position fixity of the U-shaped nylon backstop is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of zipper production, and in particular to a U-shaped nylon stop press welding assembly and a stopper uppering machine. BACKGROUND

[0002] In the existing processing of nylon stoppers, the fixity of U-shaped nylon stops is a crucial problem. Currently, open jigs or bases with positioning grooves are usually used to transfer and fix the U-shaped nylon stops. However, this design has obvious shortcomings in practical application. After the U-shaped nylon stop is formed, its position is difficult to be reliably guaranteed during the transfer and stopping process. Although this scheme has certain feasibility in function, due to its open design and limited restraining ability for the U-shaped nylon stop, the position and orientation are prone to shift during the stopping process. This not only leads to a decrease in the qualified rate of finished products, increasing the proportion of defective products, but also significantly affects the appearance consistency and aesthetics of the products, which cannot meet the increasingly strict market requirements for high-quality and consistent appearance. With the increasing demand for high-quality products in the market, this problem becomes increasingly prominent in mass production, leading to a large amount of rework, and thus reducing customer satisfaction and production efficiency.

[0003] In addition, the existing nylon stop press welding assembly is too complex in structural design, involving the coordination and cooperation of multiple components, making the overall mechanism extremely cumbersome. Although the application of multiple components enables the function to be realized, it also brings new problems. For example, the cost of component production and assembly increases, and the failure probability rises due to the complexity of the coordination and cooperation between components. The multi-component structure often means higher manufacturing costs and longer assembly time. In the long-term use process, the wear and tear and position error accumulation between components are more likely to cause instability of the overall performance, thereby affecting the reliability and production efficiency of the equipment. In actual industrial production, frequent maintenance and repair reduce production efficiency and increase equipment downtime, thereby affecting the smooth execution of production plans. In order to ensure the normal operation of the equipment, the factory usually needs to stock a large number of spare parts and invest more maintenance manpower, which undoubtedly increases the overall cost of production.

[0004] The root cause of these technical deficiencies lies in the inherent limitations of structural design and the lagging design concept. On the one hand, the U-shaped nylon stop lacks sufficient fixation and guidance during the transfer and stop process, making its position prone to deviation. On the other hand, the complex component design results in high manufacturing and maintenance costs, and increases the risk of failure and error. Therefore, there is a significant room for improvement in performance, cost, and stability in the existing technology, especially in high-precision and high-reliability application scenarios, where these deficiencies are more pronounced. For example, for products that require high precision and consistency, the errors and instability of the existing technology directly affect the quality of the final product, which not only increases the complexity of production, but also can lead to unforeseen quality problems and customer complaints, thereby damaging the reputation and market competitiveness of the enterprise. Utility Model Content

[0005] The purpose of the present application is to at least overcome one deficiency in the prior art, provide a U-shaped nylon stop press welding assembly and an upper stop machine, which simplifies the structural design, improves the position fixation of the U-shaped nylon stop, and reduces the production cost, significantly improves the consistency and aesthetics of the product, and achieves certain improvement in production efficiency and equipment reliability.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application discloses a U-shaped nylon stop press welding assembly, which comprises a first lifting mechanism, an ultrasonic welding assembly driven by the first lifting mechanism, and a forming pressure assembly, wherein the ultrasonic welding assembly has a welding head and an ultrasonic generator matched with the welding connection; the forming pressure assembly comprises a forming pressure block opposite to the end face of the welding head and a second lifting mechanism driving the forming pressure block to lift; the welding head and the forming pressure block cooperate to form two symmetrical working openings used for U-shaped nylon stop forming and stop assembly; the working opening is driven to lift by the first lifting mechanism and the forming pressure block moves relative to the end face of the welding head by the second lifting mechanism, thereby adjusting the height of the working opening.

[0007] As an optional technical solution, the press welding assembly further comprises a pressing assembly above the forming pressure assembly, which, during operation, descends and presses the forming pressure block to provide the pressing force of ultrasonic welding.

[0008] As an optional technical solution, the welding head is located below and the forming pressure block is located above.

[0009] As an optional technical solution, the forming pressure block has a downwardly extending forming protrusion, and the end face of the welding head has a groove matched with the forming protrusion, the forming protrusion and the groove cooperatively form a stable embedded connection structure and symmetrically form working openings on both sides.

[0010] As an optional technical solution, a groove for clamping the U-shaped nylon stop is arranged in the working opening.

[0011] As an optional technical solution, the first lifting mechanism comprises a fixed base with vertical guide rails and / or guide columns, a movable block guided by the guide rails and / or guide columns, a lifting cylinder / motor mounted on the base and used to drive the movable block to move in the vertical direction; the movable block is mounted with an ultrasonic welding assembly, which comprises a housing, an ultrasonic generator arranged in the housing, and a welding head extending out of the housing and connected with the ultrasonic generator.

[0012] Further, the forming pressure assembly further comprises a mounting bracket mounted on the housing, a self-resetting guide rail and / or guide column vertically arranged on the mounting bracket, a second movable block mounted on the guide rail and / or guide column, and a second lifting cylinder / motor arranged on the mounting bracket and used to drive the second movable block to move in the vertical direction, the second movable block being connected with the forming pressure block and driving the forming pressure block to move in the vertical direction.

[0013] As an optional technical solution, a groove for clamping the U-shaped nylon stop is arranged in the working opening.

[0014] To achieve the purpose of the present application, in a second aspect, the present application further discloses an upper stop machine, which comprises a machine table, a belt feeding mechanism mounted on the machine table, a belt pulling mechanism opposite to the belt feeding mechanism, a U-shaped nylon stop welding assembly located between the belt feeding mechanism and the belt pulling mechanism, an opening and closing assembly located between the U-shaped nylon stop welding assembly and the belt pulling mechanism, and nylon strip feeding and cutting assemblies symmetrically mounted on both sides of the U-shaped nylon stop welding assembly, wherein the nylon strip feeding and cutting assemblies cut the nylon strip into predetermined lengths and push the nylon strip into the working opening to form a U-shaped nylon stop; the opening and closing assembly comprises guide plates and two two-axis working arms symmetrically mounted above the guide plates, the working arms can axially extend and retract and horizontally move, and during operation, the belt passes through the guide plates, the two-axis working arms extend and cooperate to pull apart the two cloth belts, the U-shaped nylon stop welding assembly is inserted between the two cloth belts to drive the two cloth belts to reset, and then the two cloth belts enter the working opening and are welded with the U-shaped nylon stop.

[0015] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0016] 1. Improved fixation: The U-shaped nylon stop welding assembly forms a stable embedded structure through the cooperation of the forming pressure block and the welding head, effectively avoiding the positional deviation of the stop during the transfer process and improving the product consistency.

[0017] 2. Simplified structure: Compared with the traditional multi-component design, the assembly simplifies the structure, reduces the assembly complexity, and thus reduces the production and maintenance costs.

[0018] 3. Consistent aesthetics: fixed reliability is improved, and the stop position deviation is reduced to ensure that the product appearance is consistent and meets the market demand for high-quality products.

[0019] The above-listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings, in which the structures of the respective structures shown in the drawings are sometimes not shown to scale, and the dimensions, ranges and the like are sometimes not shown to scale. In the drawings:

[0021] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the overall structure of the upper stop machine.

[0022] Figure 2 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the overall structure of the upper stop machine from another perspective.

[0023] Figure 3 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the U-shaped nylon stop press welding assembly.

[0024] Figure 4 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the U-shaped nylon stop press welding assembly from another perspective.

[0025] Figure 5 is a partial structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the U-shaped nylon stop press welding assembly in the state of cooperation between the welding head and the pressure block.

[0026] Figure 6 is a partial structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the U-shaped nylon stop press welding assembly in the state of cooperation between the welding head and the pressure block from another perspective.

[0027] Figure 7 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the welding head in the U-shaped nylon stop press welding assembly.

[0028] Figure 8 is a structural schematic diagram of an embodiment of the present disclosure, which discloses the structure of the pressure block in the U-shaped nylon stop press welding assembly.

[0029] Figure 9is a structural schematic diagram of an embodiment disclosed in the present application, which discloses a middle process of forming a U-shaped nylon stopper in a U-shaped nylon stopper press-welding assembly from another perspective.

[0030] Figure 10 is a structural schematic diagram of an embodiment disclosed in the present application, which discloses a completed state of forming a U-shaped nylon stopper in a U-shaped nylon stopper press-welding assembly from another perspective.

[0031] Figure 11 is a structural schematic diagram of an embodiment disclosed in the present application, which discloses a state after combining a pull tape and a U-shaped nylon stopper in a U-shaped nylon stopper press-welding assembly from another perspective. DETAILED DESCRIPTION

[0032] The present disclosure will be described with respect to the drawings in which several embodiments of the present disclosure are shown. It is to be understood that the present disclosure can be embodied in many different forms and is not limited to the embodiments described herein; in fact, these embodiments are intended to be illustrative only and to assist in understanding the present disclosure. It will be appreciated that embodiments disclosed herein can be combined in various ways to provide additional embodiments.

[0033] It should be understood that in all of the drawings, like reference numerals refer to like parts throughout the several views. In the drawings, the dimensions of some features can be exaggerated for clarity.

[0034] It should be understood that the language used in the specification is intended to be illustrative only and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification are intended to have the meaning commonly understood by one of ordinary skill in the art. For the purposes of the present disclosure, technical and scientific terms can be used in the present disclosure and can have the meanings commonly understood by one of ordinary skill in the art. In the event of a conflict in the meaning of a term between the specification and a patent or other art, the meaning in the specification shall control.

[0035] As used in the specification, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. As used in the specification, the language "includes" and / or "comprises" is intended to be open-ended language such that the stated features, items, components, and / or elements can be present with others, whether related or unrelated. As used in the specification, the language "and / or" includes all possible combinations of the items it connects. EMBODIMENT

[0036] The present embodiment relates to an exemplary structure of a stopper zipper and its working mode. Before describing the structure in detail, the structure and function of the zipper and the role of the stopper are briefly described to facilitate the understanding of the structure and function of the embodiment.

[0037] Specifically, the structure of the zipper mainly includes two parts: the pull tape and the zipper teeth. The pull tape is composed of two cloth tapes, each of which is provided with a row of zipper teeth, forming a toothed structure. The zipper teeth of the two cloth tapes can engage with each other during operation, forming a stable connection. By sliding the zipper head, the zipper teeth gradually engage or separate along the edge of the cloth tape, realizing the opening and closing function of the zipper. In order to ensure the normal use and durability of the zipper, the stopper plays a key limiting role: it effectively prevents the zipper head from sliding out, ensures that the slider stays at the upper or lower end position when the zipper is fully closed, and avoids falling off. Although the stopper is small, its design is crucial to improving the functionality and durability of the zipper.

[0038] Referring to the accompanying Figure 1 and 2 , in this embodiment, the upper stopper machine includes a machine table 1, a tape feeding assembly 2 mounted on the machine table 1, a pull tape assembly 3 opposite to the tape feeding assembly 2, a U-shaped nylon stopper welding assembly 4 located between the tape feeding assembly 2 and the pull tape assembly 3, an opening and closing assembly 5 located between the U-shaped nylon stopper welding assembly 4 and the pull tape assembly 3, and nylon strip feeding and cutting assemblies 6 symmetrically installed on both sides of the U-shaped nylon stopper welding assembly 4.

[0039] Specifically, in the above structure, the machine table 1 is used to support all the components of the entire device, providing a stable foundation.

[0040] In the above structure, the tape feeding assembly 2 is used to tension and conduct the pull tape, which to some extent determines the accuracy of the subsequent process. In terms of specific function and role, the pull tape assembly 2 is used to unfold the pull tape, ensuring that the U-shaped nylon stopper 8 can be accurately inserted between the cloth tapes as shown in the accompanying Figure 11 .

[0041] In the above structure, the U-shaped nylon stopper welding assembly 4 is responsible for welding the nylon stopper 8 to the cloth tape, achieving a firm connection through the welding process.

[0042] In the above structure, the opening and closing assembly 5 is used to coordinate and control between the pull tape assembly 3 and the U-shaped nylon stopper welding assembly 4, so that the cloth tape can accurately enter the position of the working opening 401 in the U-shaped nylon stopper welding assembly 4.

[0043] In the above structure, the nylon strip feeding and cutting assembly 6 is responsible for cutting the nylon strip into the appropriate length and feeding it into the working opening 401. The forming process is referred to the accompanying Figure 9 and 10 for molding and welding.

[0044] In the above structure, it is understood that the tape feeding assembly 2 and the tape pulling assembly 3 are both mature technologies in the art, and belong to the prior art, so they are not described in detail in the embodiment, which does not affect the full disclosure and understanding of the technical solution, and should be considered as prior art in the art, which does not need to be expanded and described in detail, and does not affect the full disclosure of the embodiment.

[0045] In the above structure, it is also understood that the molding process of the U-shaped nylon stop 8 is a known technology to those skilled in the art, i.e. the nylon cutting and feeding assembly is a known technology, which does not need to be described in detail.

[0046] Based on the above description, referring to Figures 3 to 8 In the embodiment, the U-shaped nylon stop welding assembly 4 includes a first lifting mechanism 402, which drives the ultrasonic welding assembly 403 and the molding pressing block assembly 404 to perform lifting movement, thereby specifically completing the molding of the U-shaped nylon and the action and purpose of the stop.

[0047] In the above structure, the pressing assembly 7 cooperates with the pressure welding process to exert greater pressure on the nylon stop 8 to ensure the welding quality.

[0048] For the above-mentioned assembly, first of all, it is understood that the U-shaped nylon stop welding assembly 4 in the embodiment is different from the prior art.

[0049] Further, in the design of the first lifting mechanism 402, a fixed machine base 4005 with a vertical guide rail 4006 is adopted, the movable block 4007 is guided by the vertical guide column 4006 and driven by the lifting cylinder 4008 to move in the vertical direction, to ensure the precise positioning of the working opening 491 and the full pulling of the tape.

[0050] Further, the ultrasonic welding assembly 403 is composed of a shell 4009, an ultrasonic generator 4002 and a welding head 4001 in the shell 4009, the upper end of the welding head 4001 extends out of the shell 4009, and the lower end is connected with the ultrasonic generator 4002, thereby effectively transmitting ultrasonic energy to the welding site.

[0051] In specific work, the main function of the ultrasonic welding assembly 403 is to transmit energy to the welding site through ultrasonic vibration, so that the material melts and combines quickly. The assembly includes a welding head 4001 and an ultrasonic generator 4002, wherein the welding head 4001 works with the ultrasonic generator 4002.

[0052] It should be understood that the basic principle of ultrasonic welding is to use high-frequency vibration friction to quickly heat and melt the surface of the nylon material, and then combine under pressure to form a firm welding effect.

[0053] In the above structure, referring to the attached Figure 5 and 6 The forming block assembly 404 is a key part for shaping and positioning the nylon stop during welding. The assembly includes a forming block 4003 opposite the end face of the welding head 4001, which is raised and lowered by the second lifting mechanism 4004. The main function of the forming block 4003 is to press the nylon stop material into the desired shape (i.e., a U-shaped nylon stop 8) and cooperate with the welding head 4001 to form two symmetrical working openings 401, ensuring accurate shaping and assembly of the U-shaped nylon stop 8.

[0054] The lifting movement of the forming block 4003 is precisely controlled to ensure that the U-shaped nylon stop 8 can be stably pressed during welding, thereby achieving a consistent shape and deformation-free stop.

[0055] More specifically, the forming block 4003 extends downward with a forming protrusion that is designed to precisely match the groove on the end face of the welding head 4001 in terms of shape, size, and position, thereby achieving a stable embedded connection structure. More specifically, the forming protrusion extends downward from the bottom surface of the forming block 4003 with a certain height and profile, typically rectangular or other specific shape, to ensure consistency with the geometric structure of the groove on the end face of the welding head 4001. This design allows the forming protrusion to stably insert into the groove on the end face of the welding head 4001. This matching structure provides sufficient fixing force during the mutual embedding of the two, ensuring stability during welding or shaping and reducing the likelihood of displacement. The protrusion of the forming block 4003 cooperates with the groove of the welding head 4001, allowing the U-shaped nylon stop 8 to be stably supported and pressed during welding, avoiding material displacement or deformation, thereby achieving accurate shaping and providing sufficient support for the U-shaped nylon stop during welding, resulting in a more stable and secure welding process.

[0056] In the above structure, the size of the working opening 401 is adjusted by the cooperation of the second lifting mechanism 4004 and the forming block 4003, thereby achieving different needs of shaping, pressing the material upwards for assembly, and releasing the material after assembly.

[0057] To achieve the adjustment of the working opening 501, the forming block assembly 404 further comprises a mounting bracket 4010 mounted on the shell 4009, a self-resetting guide rail 4011 vertically erected on the mounting bracket 4010, and a second movable block 4012 mounted on the self-resetting guide rail 4011, which is driven to realize the vertical movement of the forming block 4003 by a second lifting cylinder 4013, so as to ensure that the working opening 401 forms a forming position and exerts a certain pressure on the U-shaped nylon stopper 8 during welding, so that the upper stopper process is accurate and reliable.

[0058] During the above-mentioned action process, the movement of the forming block 404 is guided by the self-resetting guide rail 4011, so that it can quickly reset after the pressure is released, preparing for the next operation.

[0059] In addition, in the specific structure, the working opening 401 is provided with a slot 4014 for clamping the U-shaped nylon stopper 8, which is matched with the rack part of the zipper tape, so that the zipper tape can be closely matched with the U-shaped nylon stopper 8 after entering the working opening, and the assembly action is quickly and accurately completed. In addition, the recess 4015 provided in the working opening 401 also matches the zipper teeth on the tape, ensuring the stable position of the zipper during processing.

[0060] As a matching implementation of sending the tape into the opening and closing assembly 5 of the U-shaped nylon stopper press welding assembly 4, in structure, it is composed of a guide plate and two double-shaft working arms symmetrically installed above the guide plate, which can be extended and retracted along the shaft and horizontally moved. When the tape passes through the guide plate, the double-shaft working arm extends and cooperates to pull the two tapes of the tape apart, and after the U-shaped nylon stopper press welding assembly 4 is inserted between the two tapes provided with zipper teeth, the double-shaft working arm is loosened to reset the tape to form a close combination. At this time, the tape is sent into the working opening 401 of the U-shaped nylon stopper 8 and combined with the U-shaped nylon stopper 8 assembly.

[0061] It should be understood that in the present embodiment, the opening and closing assembly 5 belongs to the prior art field, and its specific structure and action principle are well known to those skilled in the art, so it will not be described in detail. However, the application of the opening and closing assembly 5 in the present technical solution has been explicitly disclosed and has a proper degree of disclosure, meeting the sufficient disclosure requirement of the embodiment. Those skilled in the art can understand and implement the function of the opening and closing assembly involved in the present technical solution based on existing knowledge, without affecting the understanding and implementation of the overall technical solution.

[0062] In actual use, when the opening and closing assembly 5 cooperates with the tape feeding assembly to complete the unzipping action of the zipper tape, the U-shaped nylon stopper press welding assembly inserts the U-shaped nylon stopper 8 between the zipper tape, and through the welding head 4001 assembly, ultrasonic welding is performed to fix the U-shaped nylon stopper 8, the shaped pressing block 4003 and the lower pressing assembly 7 apply pressure to the welded part to ensure the welding strength, and finally a firm stop structure is formed.

[0063] It should also be understood that based on the structural difference, the protrusion of the shaped pressing block 4003 and the groove of the welding head 4001 cooperate with each other during the welding process, so as to ensure that the U-shaped nylon stopper 8 is stably pressed and formed in a high-temperature molten state.

[0064] In the use scenario of the present embodiment, it is especially suitable for the zipper manufacturing process which requires high strength and high efficiency. The automation design reduces manual intervention, improves production efficiency, and ensures the positioning and welding effect of each U-shaped nylon stopper 8 through precise matching structure. In the use process, the device is simple to operate and can automatically complete a series of operations such as tape feeding, tape pulling, and press welding, thereby reducing the errors caused by manual operation.

[0065] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A U-shaped nylon stop press weld assembly, characterized by, The ultrasonic welding assembly comprises a first lifting mechanism, an ultrasonic welding assembly driven by the first lifting mechanism, and a forming pressure assembly, wherein the ultrasonic welding assembly has a welding head and an ultrasonic generator matched with the welding connection; the forming pressure assembly comprises a forming pressure block opposite to the end face of the welding head and a second lifting mechanism driving the forming pressure block to lift; the welding head and the forming pressure block form two symmetrical working openings used for U-shaped nylon stopper forming and stopper assembly; the working openings are driven by the first lifting mechanism to lift and the second lifting mechanism drives the forming pressure block to make relative movement with respect to the end face of the welding head, thereby adjusting the height of the working openings.

2. A U-shaped nylon stop press weld assembly as defined in claim 1, wherein: The ultrasonic welding assembly further comprises a pressing assembly above the forming pressure assembly, which, in operation, descends and presses the forming pressure block to provide the ultrasonic welding with pressing force.

3. A U-shaped nylon stop press weld assembly as defined in claim 1, wherein: The welding head is located below and the forming pressure block is located above.

4. A U-shaped nylon stop press weld assembly as defined in claim 1, wherein: The forming pressure block has a downwardly extending forming protrusion, and the end face of the welding head has a groove matched with the forming protrusion, and the forming protrusion and the groove form a stable embedded connection structure and symmetrically form the working openings on both sides.

5. A U-shaped nylon stop press weld assembly as claimed in claim 1 or 4, wherein: The working openings are provided with groove positions for clamping the U-shaped nylon stopper.

6. A U-shaped nylon stop press weld assembly as claimed in claim 1 or 4, characterized in that: The working openings are provided with recess positions matched with zipper teeth.

7. A U-shaped nylon stop press weld assembly as defined in claim 1 wherein: The first lifting mechanism comprises a fixed base with vertical guide rails and / or guide columns, a movable block guided by the guide rails and / or guide columns, a lifting cylinder / motor installed on the base and used for driving the movable block to move in the vertical direction; the movable block is provided with the ultrasonic welding assembly, which comprises a shell, an ultrasonic generator located in the shell, and a welding head extending out of the shell and connected with the ultrasonic generator; the forming pressure assembly further comprises a mounting bracket installed on the shell, a self-resetting guide rail and / or guide column vertically erected on the mounting bracket, a second movable block installed on the guide rail and / or guide column, and a second lifting cylinder / motor provided on the mounting bracket and used for driving the second movable block to move in the vertical direction, the second movable block being connected with the forming pressure block and driving the forming pressure block to move in the vertical direction.

8. A stopper, characterized by: The machine table, the belt feeding mechanism, the belt pulling mechanism, the U-shaped nylon stopper ultrasonic welding assembly, the opening and closing assembly, and the nylon strip feeding and cutting assembly are symmetrically installed on both sides of the U-shaped nylon stopper ultrasonic welding assembly, wherein the nylon strip feeding and cutting assembly cuts the nylon strip into a predetermined length and pushes it into the working opening to form the U-shaped nylon stopper; the opening and closing assembly comprises guide plates and two two-axis working arms symmetrically installed above the guide plates, the working arms can axially extend and horizontally move, and in operation, the belt passes through the guide plates, the two-axis working arms extend and cooperate to pull apart the two cloth belts, the U-shaped nylon stopper ultrasonic welding assembly is inserted between the two cloth belts to drive the two cloth belts to reset, and then the two cloth belts enter the working opening and are welded with the U-shaped nylon stopper.

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