Industrial felt needling feed mechanism

Abstract

The utility model discloses an industrial felt needling feeding mechanism, it includes feeding roller group, feeding power source, transmission spare and tension adjusting spare, transmission spare is chain, and feeding roller group and feeding power source all form transmission through the cooperation of sprocket and chain, and tension adjusting spare includes tension sprocket, lever and balance power ware, wherein lever rotates freely around horizontal direction, and tension sprocket and balance power ware are respectively arranged at both ends of lever, and balance power ware pulls down lever and forms power moment, and tension sprocket is lifted by chain reversely and forms resistance moment, and the sum of power moment and resistance moment is zero. The utility model provides the tension degree of force that can change in real time on the one hand based on lever dynamic balance principle, to match the smooth output of different thickness net layer, overcome the deficiency of needle quality or broken needle rate caused by net layer feeding to improve practicality, on the other hand based on the transmission of sprocket and chain, not only reduce the probability of skidding, but also keep the synchronism of movement, thereby improve the stability of net layer feeding.

Description

Technical Field

[0001] This utility model belongs to the field of new fiber and composite material preparation technology, specifically relating to an industrial felt needle-punching feeding mechanism. Background Technology

[0002] Currently, industrial felt is made by combing fibers into a web, then stacking multiple webs and feeding them into a needle punching machine for needle punching on both sides, followed by heat setting and cutting to complete the entire processing procedure.

[0003] However, the feeding mechanism used in the wire mesh feeding process includes a feeding roller group, a feeding power source, a transmission component, and a tension adjustment component. The tension adjustment component adjusts the transmission component to maintain the required roller pressure output from the feeding roller group, thereby meeting the force requirements of the needle-punched wire mesh. Therefore, tension adjustment is crucial. However, in actual use, floating tensioning is more common; that is, the tension depends entirely on its own internal pressure or external support force, without considering other factors. Therefore, the following technical defects exist: 1) Poor practicality, mainly because once the thickness of the feed mesh layer changes, the resulting tension cannot be adjusted accordingly. Therefore, the output of the feed mesh layer fluctuates greatly, which not only affects the quality of needle punching, but also increases the needle breakage rate. 2) If the transmission component used is a pulley, there is a probability of transmission slippage. Once slippage occurs, it will affect the output power of the layer network and make it unstable. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an improved industrial felt needle-punching feeding mechanism.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An industrial felt needle-punching feeding mechanism includes a feeding roller assembly, a feeding power source, a transmission component, and a tension adjustment component. The transmission component is a chain. Both the feeding roller assembly and the feeding power source are driven by the cooperation of a sprocket and a chain. The tension adjustment component includes a tension sprocket, a lever, and a balancing power device. The lever rotates freely in the horizontal direction. The tension sprocket and the balancing power device are respectively located at both ends of the lever. The balancing power device pulls down the lever to generate a driving torque, and the tension sprocket is pulled up in the opposite direction by the chain to generate a resistance torque. The sum of the driving torque and the resistance torque is zero.

[0006] Preferably, the fulcrum of the lever is located at its center. This facilitates rotational balance control.

[0007] Furthermore, the points of action formed by the tensioning sprocket and the balancing power unit are symmetrically arranged about the pivot point. Based on the equality of lever arms, the sum of the driving torque and the resisting torque can be made zero (i.e., dynamic balance) by controlling the equality of the forces.

[0008] According to a specific embodiment and preferred aspect of this utility model, the balancing power device includes a hook member, a fixed post located at the bottom, and a tension spring installed between the hook member and the fixed post, wherein the downward force is formed based on the tension spring and the hook member. The tension spring not only generates the required pulling force but also fully utilizes its floating motion to maintain dynamic balance, thereby achieving the required stable output of the mesh layer.

[0009] Preferably, the tension forces generated by the hook and the tension spring are on the same straight line. This avoids the interference of forces affecting the formation of dynamic balance.

[0010] In some specific embodiments, the hook is a double-headed hook, wherein the double-headed hook includes a first hook body connected to the end of the lever, a second hook body connected to the end of the tension spring, and a third hook body respectively connected to the first hook body and the second hook body, wherein the first hook body and the second hook body move toward each other based on the rotation of the third hook body to adjust the pulling force.

[0011] Preferably, the tension spring remains elastically pulled down and expands and contracts synchronously with changes in resistance to keep the sum of the driving torque and the resistance torque zero.

[0012] According to another specific embodiment and preferred aspect of this utility model, the chain of the power sprocket from the feed power source passes upward around the tension sprocket, then passes the guide sprocket, and finally around the feed roller assembly. The cores of the guide sprocket, power sprocket, and tension sprocket are arranged in a triangular configuration. This triangular configuration ensures relatively stable resistance and is more conducive to maintaining the dynamic balance of the lever.

[0013] Preferably, in the axial projection of the sprocket, the core of the tension sprocket is located between the cores of the guide sprocket and the drive sprocket, and is located above and to the side of the line connecting the cores of the guide sprocket and the drive sprocket.

[0014] Furthermore, the feed roller assembly includes an upper feed roller and a lower feed roller that move in opposite directions, wherein the upper feed roller can be adjusted up and down to adjust the output thickness of the web layer. Here, there are two scenarios: in one scenario, the web layer is fed directly between the upper and lower feed rollers; in the other scenario, the output is formed based on the formed annular conveyor belt.

[0015] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art: In existing wire mesh feeding processes, changes in the thickness of the fed wire mesh cannot be adaptively adjusted to match the resulting tension, leading to significant fluctuations in the output of the fed wire mesh. This not only affects the quality of needle punching but also increases the needle breakage rate. Furthermore, if a pulley is used as the transmission component, there is a probability of transmission slippage, which in turn affects the unstable output power of the wire mesh. This invention addresses these shortcomings by comprehensively designing the industrial felt needle punching feeding mechanism, cleverly resolving the deficiencies and defects of existing technologies. With this new industrial felt needle punching feeding mechanism, the wire mesh fed from the self-feeding roller group is controlled by the sprocket and chain... The transmission is achieved through the cooperation of the chain and the lever is pulled down by the balancing power unit to generate a driving torque. The tension sprocket is lifted upward by the chain to generate a resistance torque. Stable output of the mesh layer is achieved under the tension force where the sum of the driving torque and the resistance torque is zero. Therefore, this utility model provides a real-time adjustable tension force based on the lever dynamic balance principle to match the stable output of mesh layers of different thicknesses, overcoming the deficiencies in needle punching quality or needle breakage rate caused by mesh layer feeding, and greatly improving the practicality of mesh layer feeding. On the other hand, based on the transmission of the sprocket and chain, it not only reduces the probability of slippage, but also maintains the synchronicity of movement, thereby further improving the stability of mesh layer feeding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the industrial felt needle-punching feeding mechanism in this embodiment; Figure 2 for Figure 1 Schematic diagrams of the structure under different conditions; The components include: 1. Feed roller assembly; 10. Upper feed roller; 11. Lower feed roller; 12. Feed sprocket; 2. Feed power source; 20. Power sprocket; 3. Transmission component (chain); 4. Tension adjustment component; 40. Tension sprocket; 41. Lever; 42. Balancing power unit; 420. Hook component; a. First hook body; b. Second hook body; c. Third hook body; 421. Fixing post; 422. Tension spring. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0022] like Figure 1 and Figure 2 As shown, the industrial felt needle-punching feeding mechanism of this embodiment includes a feeding roller group 1, a feeding power source 2, a transmission component 3, and a tension adjustment component 4. The feeding roller group 1 includes an upper feeding roller 10 and a lower feeding roller 11 that move in opposite directions. The feeding power source 2 is a conventional motor or electric motor. The transmission component 3 is a chain. The tension adjustment component 4 is a lever balance assembly.

[0023] Specifically, the feed roller group 1 and the feed power source 2 are both driven by the cooperation of sprockets and chains. The tension adjustment component 4 includes a tension sprocket 40, a lever 41 and a balancing power device 42. The lever 41 rotates freely in the horizontal direction. The tension sprocket 40 and the balancing power device 42 are respectively arranged at both ends of the lever 41. The balancing power device pulls down the lever to form a driving torque, and the tension sprocket is lifted upward by the chain to form a resistance torque. The sum of the driving torque and the resistance torque is zero.

[0024] In this example, the pivot point of lever 41 is located at its center. This facilitates rotational balance control. The points of action formed by the tension sprocket 40 and the balancing power unit 42 are symmetrically arranged about the pivot point. Based on the equality of lever arms, the sum of the driving torque and the resisting torque can be made zero (i.e., dynamic balance) by controlling the equality of the forces applied.

[0025] In some specific embodiments, the balancing power unit 42 includes a hook 420, a fixed post 421 at the bottom, and a tension spring 422 installed between the hook 420 and the fixed post 421, wherein a downward pulling force is formed based on the tension spring 422 and the hook 420. The tension spring not only generates the required pulling force but also fully utilizes its floating motion to maintain dynamic balance, thereby achieving the required stable output of the mesh layer. The pulling forces generated by the hook 420 and the tension spring 422 are located on the same straight line. This avoids mutual interference of forces affecting the formation of dynamic balance.

[0026] In this example, the hook component 420 is a double-ended hook, which includes a first hook body a connected to the end of the lever, a second hook body b connected to the end of the tension spring, and a third hook body c connected opposite to the first hook body a and the second hook body b respectively. The rotation of the third hook body c causes the first hook body a and the second hook body b to move towards each other to adjust the downward pulling force. The tension spring 422 maintains elastic downward pull and synchronously expands and contracts with changes in resistance to keep the sum of the driving torque and the resistance torque zero.

[0027] In some specific embodiments, the chain of the power sprocket 20 from the feed power source 2 passes upward around the tension sprocket 40, then through the guide sprocket 21, and finally around the feed sprocket 12 of the feed roller group 1. The cores of the guide sprocket 21, the power sprocket 20, and the tension sprocket 40 are arranged in a triangular configuration. This triangular configuration ensures relatively stable resistance and is more conducive to maintaining the dynamic balance of the lever. In the axial projection of the sprockets, the core of the tension sprocket 40 is located between the cores of the guide sprocket 21 and the power sprocket 20, and is positioned slightly above and to the side of the line connecting the cores of the guide sprocket 21 and the power sprocket 20.

[0028] Furthermore, the upper feed roller 10 can be adjusted up and down to adjust the output thickness of the wire mesh. Here, there are two cases: one is that the wire mesh is fed directly between the upper feed roller and the lower feed roller, and the other is that the output is formed based on the formed annular conveyor belt. In this example, the former is used.

[0029] In summary, by employing this industrial felt needle-punching feeding mechanism, the feed layer of the felt is transmitted through the cooperation of the sprocket and chain, while a driving torque is generated by the downward pull of the lever via the balancing power unit. The tension sprocket is pulled upward by the chain in the opposite direction, generating a resistance torque. Stable output of the felt layer is achieved under a tension force where the sum of the driving torque and the resistance torque is zero. Therefore, this invention provides, on the one hand, a real-time variable tension force based on the lever dynamic balance principle to match the stable output of felt layers of different thicknesses, overcoming the deficiencies in needle-punching quality or needle breakage rate caused by felt layer feeding, and significantly improving the practicality of felt layer feeding; on the other hand, the transmission of the sprocket and chain not only reduces the probability of slippage but also maintains the synchronicity of movement, thereby further improving the stability of felt layer feeding; thirdly, the fulcrum of the lever's rotation is located in its center, which is conducive to implementing rotational balance control, and the point of action formed by the tension sprocket... The points of action formed by the balancing power unit are symmetrically set about the fulcrum of rotation. That is, based on the equality of lever arms, the sum of the driving torque and the resistance torque can be made zero (i.e., dynamic balance) by controlling the equality of the forces. Fourthly, the use of a tension spring not only generates the required tension force, but also makes full use of the spring's floating to maintain dynamic balance, so as to achieve the required stable output of the mesh layer. At the same time, the tension force formed by the hook and the tension spring is on the same straight line, avoiding mutual interference of the forces and affecting the formation of dynamic balance. In addition, the tension spring maintains elastic downward pull and expands and contracts synchronously with the change of resistance to keep the sum of the driving torque and the resistance torque zero. Fifthly, based on the rotation of the third hook body, the first hook body and the second hook body move towards each other to adjust the downward force to meet the actual adjustment needs. Sixthly, a triangular layout is adopted to make the provided resistance relatively stable, which is more conducive to maintaining the dynamic balance of the lever.

[0030] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An industrial felt needle-punching feeding mechanism, comprising a feeding roller assembly, a feeding power source, a transmission component, and a tension adjustment component, characterized in that: The transmission component is a chain. The feed roller assembly and the feed power source are both driven by the cooperation of sprockets and chains. The tension adjustment component includes a tension sprocket, a lever, and a balancing power device. The lever rotates freely in the horizontal direction. The tension sprocket and the balancing power device are respectively located at both ends of the lever. The balancing power device pulls down the lever to generate a driving torque, and the tension sprocket is lifted upward by the chain to generate a resistance torque. The sum of the driving torque and the resistance torque is zero.

2. The industrial felt needle-punching feeding mechanism according to claim 1, characterized in that: The fulcrum of the lever is located in its middle.

3. The industrial felt needle-punching feeding mechanism according to claim 2, characterized in that: The point of action formed by the tension sprocket and the point of action formed by the balancing power unit are symmetrically arranged about the pivot point.

4. The industrial felt needle-punching feeding mechanism according to claim 1, characterized in that: The balancing power unit includes a hook, a fixed post at the bottom, and a tension spring installed between the hook and the fixed post, wherein a downward force is generated based on the tension spring and the hook.

5. The industrial felt needle-punching feeding mechanism according to claim 4, characterized in that: The tension generated by the hook and the tension spring is on the same straight line.

6. The industrial felt needle-punching feeding mechanism according to claim 5, characterized in that: The hook assembly is a double-headed hook, which includes a first hook body connected to the end of the lever, a second hook body connected to the end of the tension spring, and a third hook body that is respectively connected to the first hook body and the second hook body. The first hook body and the second hook body move towards each other based on the rotation of the third hook body to adjust the pulling force.

7. The industrial felt needle-punching feeding mechanism according to claim 5, characterized in that: The tension spring remains elastically pulled down and expands and contracts synchronously with the change in resistance to keep the sum of the driving torque and the resistance torque zero.

8. The industrial felt needle-punching feeding mechanism according to claim 1, characterized in that: The chain of the power sprocket from the self-feeding power source goes up around the tension sprocket, passes the guide sprocket, and then goes around the feed roller assembly. The wheel cores of the guide sprocket, power sprocket, and tension sprocket are arranged in a triangular pattern.

9. The industrial felt needle-punching feeding mechanism according to claim 8, characterized in that: In the axial projection of the sprocket, the core of the tension sprocket is located between the cores of the guide sprocket and the drive sprocket, and is located above and to the side of the line connecting the cores of the guide sprocket and the drive sprocket.

10. The industrial felt needle-punching feeding mechanism according to claim 1, characterized in that: The feed roller assembly includes an upper feed roller and a lower feed roller that move in opposite directions, wherein the upper feed roller can be adjusted up and down to adjust the output thickness of the mesh layer.

Images