Method for producing a circular sling and circular sling

Abstract

The present application belongs to the technical field of circular lifting belt, and particularly relates to a production method of circular lifting belt, comprising the following steps: using a first filament to bundle a plurality of parallel arranged filaments into a filament bundle body; winding the filament bundle body into a ring shape after passing through a leather, and the front end of the filament bundle body passes through the leather multiple times; winding a second filament from the front end of the filament bundle body before the front end of the filament bundle body passes into the leather, and the second filament is continuously wound outside the multiple turns of the filament bundle body during the multiple times of the filament bundle body passing into the leather; after the filament bundle body is wound for a specified number of turns, the tail of the filament bundle body is cut off to splice the head and tail of the filament bundle body; and the leather is stretched and sewn to obtain the circular lifting belt. The present application realizes the control of the neatness of the filaments by bundling the plurality of filaments and bundling the multiple turns of the filament bundle body, can make the lifting belt achieve higher filament utilization rate in the stretching use, and improve the breaking load.

Description

Technical Field

[0001] This invention belongs to the field of circular ring sling technology, and particularly relates to a method for producing a circular ring sling and a circular ring sling. Background Technology

[0002] Circular slings are widely used flexible lifting tools in the lifting field. They consist of two parts: a protective sleeve and a load-bearing core. The protective sleeve is a woven tubular sling that is wrapped around the load-bearing core to protect it. The load-bearing core is usually a rope loop made of multiple threads of the same base material wound together and connected at the ends. It is the main load-bearing component of the sling.

[0003] The current manufacturing process for the load-bearing core mostly involves two I-beams rotating and winding it. However, this winding method often results in uneven winding, causing the threads to be unevenly stressed when the sling is under tension, leading to low thread utilization. This is especially true when there are many windings. Furthermore, because the uniformity of each winding cannot be guaranteed, the quality stability of the ring sling is poor, and unqualified products are frequently found during inspection, which greatly affects the product's competitiveness.

[0004] Therefore, there is an urgent need for a production method for circular ring slings and a solution for circular ring slings. Summary of the Invention

[0005] The purpose of this invention is to provide a method for producing a circular ring sling and a circular ring sling to solve the above-mentioned problems.

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

[0007] A method for producing a circular ring sling includes the following steps:

[0008] Use the first fine filament to bundle several parallel threads into a bundle;

[0009] The filament bundle passes through the belt and is wound into a loop, with the front end of the filament bundle passing through the belt multiple times.

[0010] Before the front end of the filament bundle is inserted into the belt, a second filament is wound around the front end of the filament bundle. During the process of the filament bundle being inserted into the belt multiple times, the second filament is continuously wound around the outside of the filament bundle multiple times.

[0011] After the filament bundle is wound a specified number of times, the tail of the filament bundle is cut off, so that the filament bundle is spliced ​​together end to end.

[0012] After stretching the leather strap, it is sewn together to obtain a circular suspender.

[0013] Preferably, in the step of bundling several parallel filaments into a bundle using a first filament, the several filaments are respectively passed through corresponding monofilament controllable dampers, which are used to pass the filaments through and control the speed and tension of the filaments.

[0014] Preferably, in the step of using the first filament to bundle several parallel filaments into a bundle, the first filament is installed on the first binding mechanism, the first binding mechanism is located on one side of the output end of several single-filament controllable dampers, and after several filaments pass through the first binding mechanism, the first binding mechanism wraps the first filament around the several filaments.

[0015] Preferably, in the step of winding the filament bundle into a loop after passing through the belt, the front end of the filament bundle first passes through the filament manipulator and then through the belt. The filament manipulator is located on the outlet end side of the first binding mechanism and is used to adjust the outlet position of the filament bundle.

[0016] Preferably, in the step of winding the second filament starting from the front end of the filament bundle, after the front end of the filament bundle passes through the filament oscillator for the first time, the front end of the filament bundle is manually passed through the second binding mechanism and the belt in sequence and wound onto the winding mechanism; the second binding mechanism is activated, and the second binding mechanism winds the second filament to the outside of the first turn of the filament bundle.

[0017] Preferably, during the process of the filament bundle being inserted into the belt multiple times, the front end of the filament bundle passes through the second binding mechanism multiple times, and the second binding mechanism continuously wraps the second filament around the outside of the filament bundle multiple times.

[0018] Preferably, the winding mechanism includes a driving wheel and a driven wheel, the driving wheel and the driven wheel are located on one side of the wire outlet end of the oscillating wire device, the second binding mechanism and the belt are located between the driving wheel and the driven wheel, and the wire bundle is wound on the driving wheel and the driven wheel.

[0019] A circular sling produced by the above-described method for producing a circular sling.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] Using this method to manufacture circular slings, the neatness of the threads is controlled by binding multiple threads and multiple loops of thread bundles. This promotes pulley-like movement, hinders the relaxation diffusion after a single thread breaks, and limits the random movement of the thread bundle. This allows the sling to achieve a more efficient thread utilization rate during tensile use and improves the breaking load. The neatness of different rope loops produced using this method is more similar, with less variation, improving quality stability and ensuring a high pass rate. Attached Figure Description

[0022] 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 described 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.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the circular sling of the present invention;

[0025] Among them, 1. silk thread; 2. monofilament controllable damper; 3. first binding mechanism; 4. first filament; 5. silk bundle; 6. filament swing device; 7. second binding mechanism; 8. second filament; 9. leather belt; 10. driving wheel; 11. driven wheel; 12. rope loop. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] Reference Figures 1 to 2 This invention discloses a method for producing a circular ring sling, comprising the following steps:

[0029] Use the first fine filament 4 to bundle several parallel silk threads 1 into a silk bundle 5;

[0030] After passing through the skin 9, the filament bundle 5 is wound into a loop, and the front end of the filament bundle 5 passes through the skin 9 multiple times.

[0031] Before the front end of the filament bundle 5 is inserted into the belt 9, a second fine filament 8 is wound around the front end of the filament bundle 5. During the process of the filament bundle 5 being inserted into the belt 9 multiple times, the second fine filament 8 is continuously wound around the outside of the filament bundle 5 in multiple turns.

[0032] After the filament bundle 5 is wound a specified number of times, the tail of the filament bundle 5 is cut off so that the ends of the filament bundle 5 are spliced ​​together.

[0033] After stretching the leather strap 9, sew it together to obtain a circular suspender.

[0034] Using this method to manufacture circular slings, the neatness of the threads is controlled by binding multiple threads 1 and multiple loops of thread bundle 5, which promotes pulley-like movement, hinders the relaxation diffusion after a single thread breaks, and limits the random movement of the thread bundle. This enables the sling to achieve a more efficient thread utilization rate during tensile use and improves the breaking load. The neatness of different rope loops 12 produced using this method is more similar, with less difference, which improves the stability of quality and ensures the pass rate.

[0035] In a further optimized scheme, in the step of bundling several parallel filaments 1 into a bundle 5 using the first fine filament 4, several filaments 1 are passed through corresponding monofilament controllable dampers 2. The monofilament controllable dampers 2 are used to pass through the filaments 1 and control the entry speed and tension of the filaments 1.

[0036] In a further optimized scheme, in the step of using the first fine filament 4 to bundle several parallel filaments 1 into a bundle 5, the first fine filament 4 is installed on the first binding mechanism 3, and the first binding mechanism 3 is set on one side of the output end of several single-filament controllable dampers 2. After several filaments 1 pass through the first binding mechanism 3, the first binding mechanism 3 wraps the first fine filament 4 around the several filaments 1.

[0037] In a further optimized scheme, in the step of winding the filament bundle 5 into a loop after passing through the sheath 9, the front end of the filament bundle 5 first passes through the filament oscillator 6 and then through the sheath 9. The filament oscillator 6 is located on the side of the wire exit end of the first binding mechanism 3 and is used to adjust the wire exit position of the filament bundle 5.

[0038] To further optimize the scheme, in the step of winding the second filament 8 from the front end of the filament bundle 5, after the front end of the filament bundle 5 passes through the filament oscillator 6 for the first time, the front end of the filament bundle 5 is manually passed through the second binding mechanism 7 and the skin 9 in sequence and wound around the winding mechanism; the second binding mechanism 7 is activated, and the second binding mechanism 7 winds the second filament 8 to the outside of the first loop of the filament bundle 5.

[0039] In a further optimized scheme, during the process of the filament bundle 5 being inserted into the skin 9 multiple times, the front end of the filament bundle 5 passes through the second binding mechanism 7 multiple times, and the second binding mechanism 7 continuously wraps the second filament 8 around the outside of the filament bundle 5 in multiple turns.

[0040] The scheme is further optimized. The winding mechanism includes a driving wheel 10 and a driven wheel 11. The driving wheel 10 and the driven wheel 11 are located on one side of the wire outlet end of the swivel wire device 6. The second binding mechanism 7 and the belt 9 are located between the driving wheel 10 and the driven wheel 11. The wire bundle 5 is wound on the driving wheel 10 and the driven wheel 11.

[0041] refer to Figure 1The leftmost position is the entry point of wire 1. At least one wire 1 is provided. Wire 1 first enters the monofilament controllable damper 2. The monofilament controllable damper 2 realizes constant damping control of wire 1, ensuring that the tension of the subsequent wire 1 is uniform, and preparing for the stability of the winding quality.

[0042] Multiple strands 1 pass through the first binding mechanism 3 and are bound together in the weft direction (perpendicular to the direction of movement of the strands 1) of the first binding mechanism 3, turning the multiple strands 1 into a whole, that is, a tightly bound bundle 5. Becoming a bundle 5 has the following advantages: a. During the winding and use of the sling, if the core strands 1 are not bound, they are prone to tangling, mutual compression, interlocking, and sinking, resulting in uneven stress on the strands 1 and greatly reducing the overall stress on the sling. As a bundle 5, it can effectively prevent such situations. b. In the tensile breaking test, the strands 1 break individually, and the resulting slack is transmitted to various parts of the rope loop before failure. The bundle 5, as a whole, hinders the spread of slack after a single strand breaks, thus helping to increase the maximum breaking force of the sling. c. During the stress process, the silk bundles 5 of each loop of the entire rope loop 12 will undergo small warp (along the direction of rope loop winding) movement. This movement is similar to a rope passing over a fixed pulley (hereinafter referred to as "pulley-like motion"). The silk bundles 5 as a whole facilitate the occurrence of pulley-like motion. d. The weft binding silk threads 1 are subjected to very little force during the stretching of the sling. Therefore, the weft binding rope used can be made of thin silk threads, which can effectively reduce the cost of winding.

[0043] The filament bundle 5 then enters the filament guide 6, which guides the filaments, ensuring that the filament bundle 5 is arranged in a regular pattern during winding. This improves the neatness of the winding of the filament bundle 5 and the uniformity of the stress in the later stages.

[0044] The filament bundle then enters the position of the drive wheel 10, which drives the filament bundle 5 to wind. (The first turn of winding and joining of the filament bundle 5 should be completed manually or by auxiliary equipment.)

[0045] After the filament bundle 5 is wound by the drive wheel 10, it immediately enters the area of ​​the second binding mechanism 7. This mechanism binds the entire rope loop 12 in the weft direction, immediately fixing the relative position of the filament bundle 5 in the rope loop 12 (see cross-sectional view of rope loop 12). Figure 2 As shown, this prevents the yarn bundle 5 from shifting significantly during the later winding process due to trembling, falling, or swinging. However, it should not be tied too tightly to avoid obstructing the movement of the pulley. Tying and securing it immediately after winding also allows the limiting holes of the yarn swayer 6 set at the front to function better.

[0046] Next, we enter the belt-wearing area 9, whose main function is to add belt 9 to the wound rope loop 12.

[0047] Then proceed to the driven wheel 11 position for winding.

[0048] After winding a sufficient number of turns, connect the filament bundle 5 joints.

[0049] After unloading the leather strap 9, the joint of the silk bundle 5 is then sewn together.

[0050] Complete the process of making the suspenders.

[0051] A circular sling produced by the above-described method for producing a circular sling.

[0052] Based on the traditional winding of the driving wheel 10 and the driven wheel 11, only the first binding mechanism 3 and the second binding mechanism 7 are added, which will not cause high modification costs for the improvement of the existing production line.

[0053] The second binding mechanism 7 is positioned at the point where the winding area begins, which can maximize the prevention of the winding filament bundle 5 from erratic movement and also provides a basis for the filament oscillator 6 to function.

[0054] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for producing a circular ring sling, characterized in that, Includes the following steps: The first filament (4) is used to bind several parallel filaments (1) into a bundle (5); The filament bundle (5) passes through the belt (9) and is wound into a loop. The front end of the filament bundle (5) passes through the belt (9) multiple times. Before the front end of the filament bundle (5) is inserted into the belt (9), a second filament (8) is wound around the front end of the filament bundle (5). During the process of the filament bundle (5) being inserted into the belt (9) multiple times, the second filament (8) is continuously wound around the outside of the filament bundle (5) multiple times. After the filament bundle (5) is wound a specified number of times, the tail of the filament bundle (5) is cut off so that the ends of the filament bundle (5) are spliced ​​together. After stretching the leather strap (9), sew it together to obtain a circular suspender strap; In the step of using the first filament (4) to bundle several parallel filaments (1) into a bundle (5), several of the filaments (1) are passed through the corresponding monofilament controllable damper (2), which is used to pass through the filaments (1) and control the speed and tension of the filaments (1). In the step of using the first filament (4) to bundle several parallel wires (1) into a bundle (5), the first filament (4) is installed on the first binding mechanism (3), the first binding mechanism (3) is set on one side of the output end of several single-wire controllable dampers (2), after several wires (1) pass through the first binding mechanism (3), the first binding mechanism (3) wraps the first filament (4) around the several wires (1); In the step of the filament bundle (5) passing through the belt (9) and then being wound into a loop, the front end of the filament bundle (5) first passes through the filament manipulator (6) and then through the belt (9). The filament manipulator (6) is located on the side of the wire exit end of the first binding mechanism (3). The filament manipulator (6) is used to adjust the wire exit position of the filament bundle (5).

2. The method for producing a circular ring sling according to claim 1, characterized in that: In the step of winding the second filament (8) from the front end of the filament bundle (5), after the front end of the filament bundle (5) passes through the filament oscillator (6) for the first time, the front end of the filament bundle (5) is manually passed through the second binding mechanism (7) and the belt (9) in sequence and wound onto the winding mechanism; the second binding mechanism (7) is activated, and the second binding mechanism (7) winds the second filament (8) to the outside of the first turn of the filament bundle (5).

3. The method for producing a circular ring sling according to claim 2, characterized in that: During the process of the filament bundle (5) being inserted into the skin (9) multiple times, the front end of the filament bundle (5) passes through the second binding mechanism (7) multiple times, and the second binding mechanism (7) continuously wraps the second filament (8) around the outside of the filament bundle (5) multiple times.

4. The method for producing a circular ring sling according to claim 3, characterized in that: The winding mechanism includes a driving wheel (10) and a driven wheel (11), the driving wheel (10) and the driven wheel (11) are located on one side of the wire outlet end of the swivel wire device (6), the second binding mechanism (7) and the belt (9) are located between the driving wheel (10) and the driven wheel (11), and the wire bundle (5) is wound on the driving wheel (10) and the driven wheel (11).

5. A circular sling produced by the method for producing a circular sling according to any one of claims 1-4.

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