High strength belt core braider tension control machine

Abstract

The utility model relates to braiding mechanical technical field discloses a kind of high-strength tape core braiding machine tension control mechanism.The mechanism includes gear set, rotating seat, wire roller and central guide column, rotating seat top is equipped with tension adjustable rotary drum base mechanism, its inside is integrated with adjusting locking mechanism.The mechanism includes shell, sliding slot, sliding block and cam, cam abuts sliding block, and sliding block connects wire roller.Adjusting locking mechanism includes connecting column, spring and upper and lower clamping teeth, connecting column is fixed in cam bottom, spring is sleeved on connecting column, upper clamping tooth is located in cam top, and lower clamping tooth is located in shell inner wall top.Spring elastic force makes upper and lower clamping teeth engage locking under normal state;After tooth is separated by pressing to overcome elastic force.The utility model utilizes tooth surface engagement to realize rigid locking, solve the problem of loosening under high-speed rotation, and have the convenience of pressing unlocking, hand locking, guarantee the stability of braiding tension.

Description

Technical Field

[0001] This utility model relates to the field of weaving machinery and equipment technology, and in particular to a tension control mechanism for a high-strength belt core weaving machine. Background Technology

[0002] High-strength core braiding machines are widely used in the manufacturing of reinforcing layers for products such as high-pressure hoses and composite pipes. Their working principle involves winding multiple strands of braided yarn around a central core at a specific braiding angle. During this process, the tension stability of the braided yarn directly determines the final product's pressure resistance, structural uniformity, and appearance quality. Therefore, tension control of the yarn rollers (spools) is one of the most crucial technical aspects of braiding machines.

[0003] In existing technical solutions, to adapt to different weaving processes, it is usually necessary to adjust the radial distance of the yarn rollers relative to the weaving center or change the damping magnitude to set the tension. However, because the turntable of a high-strength weaving machine needs to carry the yarn rollers in high-speed revolution during operation, this generates huge centrifugal force and continuous high-frequency vibration. Currently, common tension adjustment mechanisms mostly use threaded connections of bolts and nuts for position adjustment and locking, or rely on simple friction plates for damping and limiting.

[0004] The main drawback of this existing structure is that relying solely on threaded or planar friction for locking is prone to stress relaxation or fretting wear under prolonged high-speed centrifugal force and severe vibration, leading to gradual loosening of the locking mechanism. Once loosening occurs, the radial position or damping state of the yarn roller will shift unexpectedly, directly causing fluctuations in braiding tension, and in severe cases, resulting in loosening of the braided layer or yarn breakage. Furthermore, to prevent loosening, operators often have to use double nuts for locking or heavy tightening, which makes subsequent adjustments extremely difficult, hindering quick and convenient tension fine-tuning and making it difficult to balance the reliability of locking with the convenience of adjustment.

[0005] Therefore, this utility model proposes a tension control mechanism for a high-strength belt core braiding machine to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a tension control mechanism for a high-strength belt core braiding machine, which aims to improve the technical problems of existing braiding machine yarn roller tension adjustment mechanisms being prone to loosening and tension instability under high-speed rotation and vibration conditions, and the traditional bolt locking method being cumbersome to adjust and difficult to achieve fast and reliable locking.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a tension control mechanism for a high-strength core braiding machine, comprising: a gear set, a rotating base, a yarn roller, braiding yarn, a bundle ring, and a central guide post; and a tension-adjustable rotary drum base mechanism. The gear set is drivenly connected to the bottom of the rotating base, the central guide post is vertically fixed to the rotation center of the rotating base, and the bundle ring is fixedly sleeved on the central guide post; the tension-adjustable rotary drum base mechanism is fixedly mounted on the top of the rotating base, the yarn roller is rotatably mounted on the top of the tension-adjustable rotary drum base mechanism, and the tension-adjustable rotary drum base mechanism is internally provided with an adjustment and locking mechanism.

[0008] The tension-adjustable rotary drum base mechanism has a rotary drum base shell, a groove radially opened inside the rotary drum base shell, a sliding block slidably engaged inside the groove, and a cam rotatably installed in the cavity inside the rotary drum base shell. The outer peripheral sidewall of the cam abuts against the inner end face of the sliding block, and the top of the sliding block protrudes through the rotary drum base shell and is rotatably connected to the wire roller.

[0009] Furthermore, the adjustment and locking mechanism includes a connecting column coaxially fixed to the bottom of the cam, a spring sleeved on the outer periphery of the connecting column, an upper locking tooth fixedly connected to the top of the cam, and a lower locking tooth fixedly connected to the top of the inner wall of the rotary drum base housing. The connecting column is slidably inserted into the inner bottom wall of the rotary drum base housing in the vertical direction. The two ends of the spring respectively abut against the bottom of the connecting column and the inner bottom surface of the rotary drum base housing. The upper locking tooth is engaged with the lower locking tooth under the axial elastic force of the spring.

[0010] Preferably, the side wall of the rotary drum base housing is provided with an adjustment port, the adjustment port is connected to the internal cavity of the rotary drum base housing, and the outer side of the cam is provided with an adjustment hole for the insertion of an adjustment tool, the horizontal height of the adjustment hole is flush with the horizontal height of the adjustment port.

[0011] Preferably, the groove extends radially away from the central guide post, the sliding block moves linearly along the groove under the push of the cam's protrusion, and the yarn roller synchronously generates radial displacement with the sliding block to change the path length between the braided yarn and the bundle ring.

[0012] Preferably, the upper locking teeth are arranged in a ring array along the top end face of the cam, and the lower locking teeth are arranged in a ring array corresponding to the upper locking teeth along the top of the inner wall of the rotary drum base housing. The meshing surfaces of the upper locking teeth and the lower locking teeth are inclined guide surfaces or right-angle stop surfaces.

[0013] Preferably, the bottom end of the connecting column is integrally formed with a limiting flange, the spring is located between the limiting flange and the inner bottom wall of the rotary drum base shell, and the assembly formed by the cam and the connecting column can overcome the elastic force of the spring and move axially downwards until the upper locking tooth and the lower locking tooth separate under external pressure.

[0014] Preferably, the braided yarn is wound in multiple strands on the yarn roller, and the exit end of the braided yarn is led out by the yarn roller and converges through the central through hole of the bundle ring. The bundle ring is coaxially fixed to the top of the central guide post by a bracket.

[0015] Preferably, a driven gear ring is fixedly sleeved on the outer periphery of the rotating seat, and the gear set includes a drive motor and a driving gear mounted on the output shaft of the drive motor, wherein the driving gear meshes with the driven gear ring for transmission.

[0016] Preferably, the outer shell of the rotating drum base is fixedly connected to the upper surface of the rotating seat by bolts, the wire roller is vertically mounted on the top surface of the sliding block via a rotating shaft, and the wire roller is capable of rotating around the rotating shaft.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem that existing braiding machine yarn roller tension adjustment mechanisms are prone to loosening and displacement due to friction failure under high-speed rotation and severe vibration conditions by setting an upper and lower locking structure driven by a spring between the cam and the outer shell of the rotary drum base. It achieves mechanical rigid locking by using tooth surface meshing and has the convenient operation characteristics of "press to unlock and adjust, release to automatically reset and lock", which significantly improves the stability of tension parameters and the quality of braided products during equipment operation.

[0019] 2. This utility model, by adopting a transmission design in which the cam rotation drives the sliding block to make radial linear motion along the slide groove, solves the problem that traditional tension adjustment methods often require disassembling parts or have cumbersome adjustment steps and are difficult to control in terms of precision. It achieves the technical effect of converting a simple rotation operation into a precise radial displacement of the yarn roller position, thereby flexibly and accurately controlling the weaving tension by changing the yarn roller's rotation radius and the length of the weaving yarn path. Attached Figure Description

[0020] Figure 1 A perspective view of a tension control mechanism for a high-strength belt core braiding machine proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the rotating drum base shell of a tension control mechanism for a high-strength belt core braiding machine proposed in this utility model;

[0022] Figure 3A cross-sectional schematic diagram of the rotating drum base shell of a tension control mechanism for a high-strength belt core braiding machine proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the lower clamping teeth of a tension control mechanism for a high-strength belt core braiding machine proposed in this utility model;

[0024] Figure 5 This is an exploded schematic diagram of the spring in the tension control mechanism of a high-strength belt core braiding machine proposed in this utility model.

[0025] Legend:

[0026] 1. Gear set; 2. Rotating seat; 3. Wire roller; 4. Braided wire; 5. Bundling ring; 6. Central guide column; 7. Tension adjustable rotary drum base mechanism; 701. Rotary drum base shell; 702. Adjustment port; 703. Cam; 704. Sliding block; 705. Slide groove; 8. Adjustment locking mechanism; 801. Upper locking tooth; 802. Connecting column; 803. Lower locking tooth; 804. Spring. Detailed Implementation

[0027] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0028] Reference Figures 1-5 The present invention provides an embodiment of a tension control mechanism for a high-strength core braiding machine, comprising a gear set 1, a rotating seat 2, a yarn roller 3, braiding yarn 4, a bundling ring 5, and a central guide post 6. The gear set 1 is driven and connected to the bottom of the rotating seat 2 to provide rotational power. The central guide post 6 is vertically fixed on the rotational central axis of the rotating seat 2. The bundling ring 5 is coaxially fixed to the top of the central guide post 6 through a bracket and is used to guide the convergence and formation of the braiding yarn 4.

[0029] The tension-adjustable rotary drum base mechanism 7 serves as the mounting carrier for the wire roller 3 and the execution component for tension adjustment. The wire roller 3 is rotatably mounted on the top of the tension-adjustable rotary drum base mechanism 7, and the tension-adjustable rotary drum base mechanism 7 integrates an adjustment and locking mechanism 8. Through the cooperation between the tension-adjustable rotary drum base mechanism 7 and the adjustment and locking mechanism 8, the radial position adjustment of the wire roller 3 relative to the central guide column 6 and the anti-loosening locking after adjustment are realized.

[0030] Specifically, the rotating base 2 is rotatably supported on the frame via a bearing assembly. A driven gear ring is fixedly sleeved on the outer periphery of the rotating base 2. The gear set 1 includes a drive motor and a driving gear mounted on the output shaft of the drive motor. The driving gear meshes with the driven gear ring, thereby driving the rotating base 2 and the tension-adjustable rotary drum base mechanism 7 above it to rotate at high speed around the central guide post 6. The braided yarn 4 is wound in multiple strands on the yarn roller 3. The exit end of the braided yarn 4 is led out from the yarn roller 3 and converges through the central through hole of the bundle ring 5. When the tension-adjustable rotary drum base mechanism 7 drives the yarn roller 3 to change its radial distance relative to the central guide post 6, the path length of the braided yarn 4 from the yarn roller 3 to the bundle ring 5 changes, thereby achieving precise control of the braiding tension.

[0031] The tension-adjustable rotary drum base mechanism 7 includes a rotary drum base housing 701, which is fixedly connected to the upper surface of the rotating seat 2 by bolts and rotates synchronously with the rotating seat 2. The inner bottom surface of the rotary drum base housing 701 is provided with a groove 705 extending radially away from the central guide post 6. The groove wall of the groove 705 is flat and smooth to provide a guiding reference. A sliding block 704 is slidably installed inside the groove 705. The width of the sliding block 704 is adapted to the width of the groove 705 to limit the lateral sway of the sliding block 704. The top of the sliding block 704 extends out of the top surface of the rotary drum base housing 701 and is provided with a rotating shaft for mounting the wire roller 3. The wire roller 3 is rotatably connected to the sliding block 704 through the rotating shaft, so that the wire roller 3 can perform radial linear reciprocating motion along the length direction of the groove 705 with the sliding block 704. A cam 703 is rotatably mounted in the internal cavity of the rotary drum base housing 701. The cam 703 is located inside the sliding block 704. The outer peripheral sidewall of the cam 703 has a raised curved surface with varying radius. This raised curved surface directly abuts against the inner end face of the sliding block 704 facing the central guide post 6. The sidewall of the rotary drum base housing 701 has a through adjustment port 702 corresponding to the position of the cam 703. The adjustment port 702 connects to the internal cavity of the rotary drum base housing 701. The outer side of the cam 703 has an adjustment hole for the insertion of an adjustment tool. The horizontal height of the adjustment hole is flush with the horizontal height of the adjustment port 702. When an external tool passes through the adjustment port 702 and is inserted into the adjustment hole and the cam 703 is rotated, the radius change generated by the rotation of the cam 703 pushes the sliding block 704 to overcome the tension of the braided yarn 4 on the yarn roller 3 and slide outward along the slide groove 705, thereby changing the relative distance between the yarn roller 3 and the bundle ring 5 to adjust the braiding tension.

[0032] As a preferred embodiment, to prevent the cam 703 from unexpectedly rotating due to inertia or centrifugal force during high-speed operation or strong vibration of the equipment, leading to tension loss of control, the tension-adjustable rotary drum base mechanism 7 further integrates an adjustment and locking mechanism 8. The adjustment and locking mechanism 8 includes a connecting column 802 coaxially fixedly connected to the bottom of the cam 703 and an upper locking tooth 801 coaxially fixedly connected to the top of the cam 703. The connecting column 802 is slidably inserted into the mounting hole provided in the inner bottom wall of the rotary drum base housing 701 in the vertical direction. The bottom end of the connecting column 802 is integrally formed with a limiting flange. The spring 804 is sleeved on the outer periphery of the connecting column 802 and located on the upper surface of the limiting flange and below the inner bottom wall of the rotary drum base housing 701. Between the surfaces, a lower locking tooth 803 is fixedly provided at the top of the inner wall of the rotary drum base shell 701 corresponding to the position of the upper locking tooth 801. The upper locking teeth 801 are arranged in a ring array along the top end face of the cam 703, and the lower locking teeth 803 are arranged in a ring array corresponding to the upper locking teeth 801 along the top of the inner wall of the rotary drum base shell 701. The meshing surfaces of the upper locking teeth 801 and the lower locking teeth 803 are designed as right-angle stop surfaces or inclined guide surfaces with self-locking angles. Under normal conditions, the spring 804 applies an upward axial elastic force to push the limiting flange, causing the connecting column 802 and the cam 703 to move upward as a whole, so that the upper locking teeth 801 and the lower locking teeth 803 maintain a tight meshing state, thereby locking the angular position of the cam 703 through tooth surface meshing.

[0033] As another preferred embodiment, in order to facilitate tension adjustment by the operator without disassembling the equipment housing, the adjustment port 702 is opened on the side of the rotating drum base housing 701 corresponding to the cam 703. The adjustment hole on the side of the cam 703 is designed as a hexagonal hole or cross groove structure to accommodate a common hex wrench or screwdriver. The axis of the adjustment hole coincides with the center line of the adjustment port 702 on the horizontal plane to ensure that the adjustment tool can be smoothly inserted and torque applied.

[0034] As a further preferred embodiment, in order to ensure the smoothness of adjustment and the linearity of the movement of the yarn roller 3, the slide groove 705 extends in a radial straight direction away from the central guide post 6, and the two side walls of the slide groove 705 and the two side surfaces of the sliding block 704 are fitted with clearance, and the mating surfaces are coated with grease. The sliding block 704 moves outward along the slide groove 705 under the unidirectional push of the protrusion of the cam 703. When reverse adjustment is required, the yarn roller 3 and the sliding block 704 can be pushed inward to reset by manual or by the tension of the braided yarn 4 itself.

[0035] Working Principle: When the braiding machine enters normal working condition, the drive motor starts and drives the gear set 1 to rotate. The drive gear drives the driven gear ring on the outer periphery of the rotating seat 2 to rotate. The rotating seat 2 then drives the tension-adjustable rotary drum base mechanism 7 fixed on it and the top yarn roller 3 to revolve at high speed around the central guide column 6. During this process, the braiding thread 4 is released from the yarn roller 3 and converges at the bundling ring 5 under the combined action of centrifugal force and traction force for braiding. At this time, due to the continuous upward elastic force applied by the spring 804, the cam 703 is lifted, so that the upper locking tooth 801 on its top is tightly engaged with the lower locking tooth 803 fixed on the top of the inner wall of the rotary drum base housing 701, maintaining a locked state. No matter how high the speed of the equipment or how violent the vibration, the cam 703 is mechanically locked and cannot rotate, thus ensuring that the position of the sliding block 704 is constant and maintaining the stability of the tension of the braiding thread 4.

[0036] When it is necessary to adjust the weaving tension, the operator uses a special tool (such as a hex wrench) to insert it through the adjustment port 702 on the side wall of the rotary drum base housing 701 into the adjustment hole on the side of the cam 703 while the machine is stopped. The adjustment process consists of three steps: First, the operator applies downward pressure using a tool to overcome the elasticity of the spring 804 and push the cam 703 and connecting column 802 assembly downward axially until the upper locking tooth 801 is completely disengaged from the lower locking tooth 803, thus releasing the locked state. Second, while maintaining the downward pressure, the operator rotates the tool to rotate the cam 703. When the cam 703 rotates, its variable-diameter convex surface pushes against the sliding block 704, forcing the sliding block 704 to drive the yarn roller 3 to move radially outward along the slide groove 705, thereby increasing the rotation radius of the yarn roller 3 and tightening the braided yarn 4 to increase tension. Finally, after adjusting to the predetermined tension position, the operator releases the tool and withdraws the downward pressure. Under the restoring elasticity of the spring 804, the connecting column 802 drives the cam 703 to quickly rebound and move upward. The upper locking tooth 801 re-engages in the lower locking tooth 803 to complete the engagement, and the cam 703 is locked again at the new angle position, achieving convenient and reliable tension adjustment.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A tension control mechanism for a high-strength belt core braiding machine, comprising: The gear set (1), rotating seat (2), wire roller (3), braided wire (4), bundle ring (5) and central guide post (6) are connected to the bottom of the rotating seat (2), the central guide post (6) is vertically fixed to the rotation center of the rotating seat (2), and the bundle ring (5) is fixedly sleeved on the central guide post (6). Its features are, The top of the rotating seat (2) is fixedly installed with a tension adjustable rotary drum base mechanism (7), the top of the tension adjustable rotary drum base mechanism (7) is rotatably installed with the wire roller (3), and the tension adjustable rotary drum base mechanism (7) is provided with an adjustment locking mechanism (8). The tension-adjustable rotary drum base mechanism (7) includes a rotary drum base housing (701), a groove (705) radially opened inside the rotary drum base housing (701), a sliding block (704) slidably fitted inside the groove (705), and a cam (703) rotatably installed in the internal cavity of the rotary drum base housing (701). The outer peripheral sidewall of the cam (703) abuts against the inner end face of the sliding block (704), and the top of the sliding block (704) protrudes through the rotary drum base housing (701) and is rotatably connected to the wire roller (3). The adjustment and locking mechanism (8) includes a connecting post (802) coaxially fixedly connected to the bottom of the cam (703), a spring (804) sleeved on the outer periphery of the connecting post (802), an upper locking tooth (801) fixedly connected to the top of the cam (703), and a lower locking tooth (803) fixedly connected to the top of the inner wall of the rotary drum base shell (701). The connecting post (802) is slidably inserted into the inner bottom wall of the rotary drum base shell (701) in the vertical direction. The two ends of the spring (804) respectively abut against the bottom of the connecting post (802) and the inner bottom surface of the rotary drum base shell (701). The upper locking tooth (801) is engaged with the lower locking tooth (803) under the axial elastic force of the spring (804).

2. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The side wall of the rotary drum base housing (701) is provided with an adjustment port (702), which is connected to the internal cavity of the rotary drum base housing (701). The outer side of the cam (703) is provided with an adjustment hole for the insertion of an adjustment tool. The horizontal height of the adjustment hole is flush with the horizontal height of the adjustment port (702).

3. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The groove (705) extends in a radial direction away from the central guide post (6). The sliding block (704) moves linearly along the groove (705) under the push of the protrusion of the cam (703). The yarn roller (3) generates radial displacement synchronously with the sliding block (704) to change the path length between the braided yarn (4) and the bundle ring (5).

4. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The upper locking teeth (801) are arranged in a ring array along the top end face of the cam (703), and the lower locking teeth (803) are arranged in a ring array corresponding to the upper locking teeth (801) along the top of the inner wall of the rotary drum base housing (701). The meshing surfaces of the upper locking teeth (801) and the lower locking teeth (803) are inclined guide surfaces or right-angle braking surfaces.

5. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The bottom end of the connecting column (802) is integrally formed with a limiting flange. The spring (804) is located between the limiting flange and the inner bottom wall of the rotary drum base shell (701). The assembly formed by the cam (703) and the connecting column (802) can overcome the elastic force of the spring (804) and move axially downward under external pressure until the upper locking tooth (801) and the lower locking tooth (803) separate.

6. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The braided yarn (4) is wound in multiple strands on the yarn roller (3). The exit end of the braided yarn (4) is led out by the yarn roller (3) and converges through the central through hole of the bundle ring (5). The bundle ring (5) is coaxially fixed to the top of the central guide post (6) by a bracket.

7. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The outer periphery of the rotating seat (2) is fixedly sleeved with a driven gear ring. The gear set (1) includes a drive motor and a driving gear mounted on the output shaft of the drive motor. The driving gear meshes with the driven gear ring for transmission.

8. The tension control mechanism for a high-strength belt core braiding machine according to claim 1, characterized in that, The outer shell (701) of the rotating drum base is fixedly connected to the upper surface of the rotating seat (2) by bolts. The roller (3) is vertically installed on the top surface of the sliding block (704) through the rotating shaft. The roller (3) can rotate around the rotating shaft.

Images