A pre-tensioning device for winding, a belt winding machine and a method of use thereof

Abstract

This invention discloses a winding pre-tensioning device, a belt winding machine, and its usage method, belonging to the technical field of belt winding equipment. It comprises a base, a manual adjustment component, a cantilever mechanism, a pneumatic pressing component, and a pressure roller assembly. The manual adjustment component allows for horizontal position adjustment and, in conjunction with the limiting roller and belt limiting ring, achieves precise axial positioning of the belt roll. The cantilever mechanism can rotate for positioning and magnetic locking. The pneumatic pressing component drives the pressure roller assembly to rise and fall vertically. The V-shaped floating pressure roller structure with a pre-tensioning spring provides a constant pre-tensioning force, adaptively conforming to the surface of the belt roll for pressing. This invention can replace manual pressing operations, achieving automation, constant force pre-tensioning, and precise positioning during belt winding, effectively preventing defects such as belt winding deviation, looseness, and wrinkling deformation, significantly improving the quality of the finished product and production efficiency, and reducing labor costs.

Description

Technical Field

[0001] This invention belongs to the technical field of belt winding machines, and specifically relates to a winding pre-tensioning device, a belt winding machine, and its usage method. Background Technology

[0002] After the belt production and processing are completed, the long strip of belt needs to be neatly wound into rolls by a winding machine for easy subsequent storage, transportation and secondary processing. At present, conventional belt winding equipment on the market generally relies on manual pressing of the belt roll core to achieve initial pre-tightening during the winding process, so as to ensure the tightness and regularity of the belt winding. This operation method has many defects and drawbacks.

[0003] First, the clamping force of manual pressing relies entirely on the operator's experience, making it impossible to maintain a constant and uniform clamping force. This easily leads to problems such as excessive pressure causing belt deformation, wrinkles, and tears, or insufficient pressure causing loose winding, interlayer misalignment, and belt deviation, severely affecting the quality of the finished belt and resulting in a low product yield. Second, the continuous manual pressing operation is extremely labor-intensive, and prolonged operation can easily cause operator fatigue, further exacerbating problems such as uneven pressing force and winding deviation. At the same time, each machine requires a dedicated person to operate, resulting in high labor costs and low production efficiency, making it unsuitable for the needs of large-scale, automated production lines.

[0004] In summary, the existing manual pressing operation mode of belt winding has technical defects such as low precision, poor stability, low efficiency, high labor costs, and insufficient versatility. There is an urgent need for an automated winding pre-tensioning device that can be adaptively adjusted and used in conjunction with the existing belt winding machine to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a winding pre-tensioning device, a belt winding machine, and a method of using the same, to replace the traditional manual pressing operation, realize automated pressing and constant force pre-tensioning in the belt winding process, and solve the problems of uneven pressing force, poor winding regularity, low production efficiency, and high labor intensity caused by manual pressing.

[0006] To solve the above-mentioned technical problems, the present invention provides a winding pre-tensioning device, including a base, a manual adjustment assembly, a cantilever mechanism, a pneumatic pressing assembly, and a pressure roller assembly;

[0007] The manual adjustment component is mounted horizontally on the base to adjust the horizontal position of the limit roller;

[0008] The cantilever mechanism is mounted on the manual adjustment assembly, and the cantilever rotates about the vertical direction while the manual adjustment assembly moves horizontally.

[0009] The pneumatic pressing assembly is mounted on the cantilever, and as the cantilever rotates, the piston rod of the cylinder rises and falls in the vertical direction.

[0010] The pressure roller assembly is installed at the end of the piston rod. As the piston rod rises and falls, two sets of symmetrical, unpowered pressure rollers press against the surface of the belt roll and maintain a stable clamping force.

[0011] Preferably, the manual adjustment assembly further includes a trapezoidal lead screw assembly and a sliding seat. Under the action of the trapezoidal lead screw assembly, the sliding seat is driven to move horizontally. The limiting chuck is detachably installed on the sliding seat to clamp the belt limiting ring and adjust the position of the belt limiting ring on the winding shaft.

[0012] Preferably, there are two limiting rollers that clamp the edge of the belt limiting ring to limit the axial position of the belt limiting ring on the take-up shaft; at the same time, the belt limiting ring rotates synchronously with the take-up shaft.

[0013] Preferably, the cantilever mechanism further includes a cantilever base, which is connected to the trapezoidal screw assembly and, under the action of the trapezoidal screw assembly, drives the cantilever base to move horizontally;

[0014] The cantilever is rotatably connected to the cantilever base via a pin, allowing the cantilever to rotate axially relative to the cantilever base around the pin.

[0015] Preferably, the cantilever base is provided with two sets of limiting rods, and the two sets of limiting rods are vertically distributed to serve as rotational limiting for the cantilever;

[0016] The contact area between the limiting rod and the cantilever is provided with a magnet, which magnetically attracts and fixes the cantilever.

[0017] Preferably, the pneumatic pressing assembly further includes a cylinder, which is fixedly installed at the end of the cantilever away from the cantilever base, and the piston rod is connected to the pressure roller assembly through a floating joint;

[0018] An upper limit limit switch, a lower limit limit switch, and a winding-up switch are installed on the cylinder; the upper limit limit switch and the lower limit limit switch respectively sense the upper and lower limits of the piston rod; the winding-up switch is used to sense the winding state of the belt roll under the pressure roller assembly.

[0019] Preferably, the pressure roller assembly further includes a pressure roller seat and two sets of pressure roller floating frames. One end of each set of pressure roller floating frames is rotatably connected to the pressure roller seat via the same rotating shaft; the other end is respectively equipped with a set of unpowered pressure rollers; the two sets of unpowered pressure rollers press against the surface of the belt roll under the action of the V-shaped distributed pressure roller floating frames.

[0020] Preferably, the V-shaped distributed floating pressure roller frames are connected by a connecting rod, and a pre-tensioning spring is sleeved on the connecting rod. Under the action of the pre-tensioning spring, a pre-tensioning force is provided for the two sets of unpowered pressure rollers.

[0021] The present invention also provides a belt winding machine, wherein a winding pre-tensioning device is installed on any one or both sides of the belt winding machine, and the upper surface of the belt roll between the two winding shafts is pressed by a pressure roller assembly; and the belt limiting ring abuts against the side of the belt roll.

[0022] The present invention also provides a method for using a belt winding machine, comprising the following steps:

[0023] S1. Equipment assembly: Install and fix the winding pre-tightening device on one or both sides of the belt winding machine, so that the pressure roller assembly corresponds to the top of the belt roll between the two winding shafts. At the same time, assemble the belt limiting ring on the winding shaft and clamp the edge of the belt limiting ring by two sets of limiting chucks that are detachably installed on the sliding seat.

[0024] S2, Horizontal position adjustment: The sliding seat is driven to move horizontally by the trapezoidal screw assembly, which simultaneously drives the cantilever base and the overall cantilever mechanism to move horizontally, thereby adjusting the horizontal position of the limit roller and the belt limit ring, accurately limiting the axial position of the belt limit ring on the winding shaft, realizing the lateral limit of the belt roll on the winding shaft, and the belt limit ring rotates synchronously with the winding shaft.

[0025] S3. Cantilever Angle Positioning: The vertical axial rotation of the cantilever relative to the cantilever base is achieved through the pin shaft. The rotation of the cantilever is limited by two sets of vertically distributed limit rods on the cantilever base. The cantilever is fixed by the magnets on the limit rods, thus completing the angle locking of the cantilever and ensuring the stable working position of the end pneumatic pressing assembly and the pressure roller assembly.

[0026] S4. Pre-tightening pressure adjustment: The pre-tightening springs sleeved on the connecting rods between the floating frames of the pressure rollers provide a constant pressing pre-tightening force for the two sets of symmetrically distributed V-shaped non-powered pressure rollers. The two sets of floating frames of the pressure rollers are rotatably connected to the pressure roller seats through the same rotating shaft, ensuring that the non-powered pressure rollers can adaptively conform to the surface of the belt roll.

[0027] S5. Automated winding operation: After the equipment is started, the cylinder drives the pressure roller assembly to rise and fall vertically through the piston rod. Relying on the lower limit limit switch of the cylinder to sense the descent position of the piston rod, the unpowered pressure rollers of the pressure roller assembly are made to fit against the surface of the belt roll core. During operation, the two sets of unpowered pressure rollers stably press against the upper surface of the belt roll, and cooperate with the belt limit ring to abut against the limit. At the same time, the winding status of the belt roll is sensed in real time through the winding position switch. With the cooperation of constant pretension and precise limit, the belt roll is completed smoothly and neatly.

[0028] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0029] 1. The winding and pre-tightening device of the present invention completely replaces the traditional manual pressing operation, realizes the fully automated operation of belt winding, pressing, pre-tightening and limiting, without the need for continuous manual supervision and pressing, greatly reduces the intensity of manual labor and labor costs, significantly improves the production efficiency of belt winding, and is suitable for large-scale assembly line production.

[0030] 2. The winding pre-tightening device of the present invention provides a constant pressing pre-tightening force through a pre-tightening spring. Combined with the V-shaped floating pressure roller structure, it can adaptively conform to the surface of the belt roll, and the pressing force is uniform and stable. It completely solves the problems of belt wrinkles, tearing, loose winding and deviation caused by uneven pressing force in manual operation, and greatly improves the quality and yield of belt winding products.

[0031] 3. The winding pre-tensioning device of the present invention can accurately limit the axial position of the belt roll by setting a manually adjustable limit roller and belt limit ring structure, so as to avoid the belt axial deviation during the winding process, ensure that the end face of the belt roll is flat and the roll body is regular after winding, and can be adapted to the winding operation of belts of different widths and specifications, and the equipment has strong versatility. Attached Figure Description

[0032] Figure 1 A first-view structural schematic diagram of the winding pre-tightening device provided by the present invention;

[0033] Figure 2 A second-view structural schematic diagram of the winding pre-tightening device provided by the present invention;

[0034] Figure 3 A front view of the winding pre-tensioning device provided by the present invention;

[0035] Figure 4 A schematic diagram of the structure of the manual adjustment component provided by the present invention;

[0036] Figure 5 This is a schematic diagram of the cantilever mechanism provided by the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the pneumatic down-pressing assembly provided by the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the pressure roller assembly provided by the present invention;

[0039] Figure 8 This is a structural schematic diagram of the belt winding machine provided by the present invention from a first-view perspective.

[0040] Figure 9 This is a structural schematic diagram of the belt winding machine provided by the present invention from a second perspective.

[0041] The meanings of the markings in the attached diagram are as follows:

[0042] In the diagram: 1-Base, 2-Manual adjustment assembly, 201-Limiting chuck, 202-Trapezoidal screw assembly, 203-Sliding seat, 3-Cantilever mechanism, 301-Cantilever, 302-Cantilever base, 303-Pin, 304-Limiting rod, 4-Pneumatic pressing assembly, 401-Piston rod, 402-Cylinder, 403-Floating joint, 404-Upper limit limit switch, 405-Lower limit limit switch, 406-Rewinding position switch, 5-Pressure roller assembly, 501-Non-powered pressure roller, 502-Pressure roller seat, 503-Pressure roller floating frame, 504-Rotating shaft, 505-Connecting rod, 506-Pre-tension spring, 6-Belt limit ring, 100-Rewinding shaft, 200-Belt roll. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0044] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "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. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Example

[0047] This invention provides a winding pre-tensioning device; please refer to [link / reference]. Figure 1-3 This device can be added to existing belt winding machines. Its core purpose is to replace the traditional manual pressing and winding method and realize automated constant force pre-tension winding operation.

[0048] like Figure 4-5 As shown, in the actual assembly process, the overall assembly of the winding pre-tightening device is first completed. The manual adjustment component 2 is horizontally fixed on the base 1 to ensure that the trapezoidal screw component 202 runs smoothly and the sliding seat 203 slides smoothly. The cantilever base 302 of the cantilever mechanism 3 is docked and fixed with the trapezoidal screw component 202. The cantilever 301 is flexibly rotated through the pin 303, and the rotation is limited by the two sets of vertically distributed limit rods 304 on the cantilever base 302. At the same time, the cantilever 301 is magnetically fixed by the magnet on the limit rod 304 to avoid the cantilever swaying and deviating during operation.

[0049] Please also refer to Figure 6 and Figure 7 Subsequently, the pneumatic pressing assembly 4 and the pressure roller assembly 5 are assembled. The cylinder 402 is fixed to the end of the cantilever 301, and the piston rod 401 is connected to the pressure roller seat 502 through the floating joint 403 to ensure floating pressing and avoid rigid tension affecting the pressing accuracy. Two sets of V-shaped distributed pressure roller floating frames 503 are rotatably connected to the pressure roller seat 502 through the rotating shaft 504. They are connected in series through the connecting rod 505 and equipped with a pre-tensioning spring 506 to provide uniform and constant pre-tensioning pressure to the two sets of unpowered pressure rollers 501, so that the pressure rollers can adaptively conform to the arc-shaped upper surface of the belt roll 200. At the same time, a magnetic induction upper limit limit switch 404, a lower limit limit switch 405, and a winding position switch 406 are installed on the cylinder 402 to realize stroke limit and automatic detection of working status. In this embodiment, the three switches use magnetic induction position sensors.

[0050] Before operation, the operator manually adjusts the horizontal position of the sliding seat 203 using the trapezoidal screw assembly 202 according to the width specifications of the belt roll 200. This causes the limiting rollers 201 and the cantilever mechanism 3 to move horizontally as a whole, allowing the two sets of limiting rollers 201 to precisely clamp the belt limiting ring 6, limiting the axial position of the belt limiting ring 6 on the winding shaft 100. This achieves lateral limiting of the belt roll 200, preventing winding deviation and uneven end faces. Simultaneously, the cantilever 301 is rotated to adjust the working angle of the pressure roller assembly 5. After adjustment, the position of the cantilever 301 is locked by a magnetic structure to ensure operational stability.

[0051] During the formal winding operation, the winding machine is started, and the winding shaft 100 drives the belt limit ring 6 to rotate synchronously with the belt roll 200. The cylinder 402 drives the piston rod 401 to move downward, and the lower limit travel switch 405 precisely controls the downward stroke, so that the unpowered pressure roller 501 stably presses against the upper surface of the belt roll 200. Under the action of the pre-tension spring 506, the unpowered pressure roller 501 always maintains a constant pressing force. As the diameter of the belt roll 200 gradually increases, the pressure roller floating frame 503 adaptively fine-tunes its angle to continuously conform to the surface of the roll, ensuring uniform pressing throughout the process. At the same time, the winding completion switch 406 monitors the winding progress in real time. After winding is completed, it can work with the control system to automatically stop the machine and reset the pressure roller, without the need for manual intervention throughout the process.

[0052] In this embodiment, as Figure 8 and 9 As shown, the winding pre-tensioning device can be installed on one or both sides of the winding machine according to the operation requirements, so as to meet the requirements of winding multiple belt rolls at the same time or pressing and pre-tensioning both ends of the same belt roll at the same time.

[0053] This winding pre-tensioning device replaces manual pressing with a mechanized and automated structure, fundamentally solving problems such as uneven force, low efficiency, and unstable product quality caused by manual operation. It significantly improves the automation level and product qualification rate of belt winding operations, reduces production and operating costs, and has extremely high practical value and promotion prospects.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winding pre-tensioning device, characterized in that, It includes a base (1), a manual adjustment assembly (2), a cantilever mechanism (3), a pneumatic pressing assembly (4), and a pressure roller assembly (5); The manual adjustment component (2) is installed on the base (1) in the horizontal direction to adjust the horizontal position of the limiting roller (201); The cantilever mechanism (3) is mounted on the manual adjustment assembly (2). As the manual adjustment assembly (2) moves horizontally, the cantilever (301) rotates around the vertical direction. The pneumatic pressing assembly (4) is mounted on the cantilever (301). As the cantilever (301) rotates, the piston rod (401) of the cylinder rises and falls in the vertical direction. The pressure roller assembly (5) is installed at the end of the piston rod (401). As the piston rod (401) rises and falls, two sets of symmetrical non-powered pressure rollers (501) press against the surface of the belt roll and maintain a stable clamping force.

2. The winding pre-tensioning device according to claim 1, characterized in that, The manual adjustment assembly (2) also includes a trapezoidal lead screw assembly (202) and a sliding seat (203). Under the action of the trapezoidal lead screw assembly (202), the sliding seat (203) is driven to move horizontally. The limiting roller (201) is detachably installed on the sliding seat (203) to clamp the belt limiting ring (6) and adjust the position of the belt limiting ring (6) on the winding shaft (100).

3. A winding pre-tensioning device according to claim 2, characterized in that, Two limiting rollers (201) are provided, which clamp the edge of the belt limiting ring (6) to limit the axial position of the belt limiting ring (6) on the winding shaft (100); at the same time, the belt limiting ring (6) rotates synchronously with the winding shaft (100).

4. A winding pre-tensioning device according to claim 2, characterized in that, The cantilever mechanism (3) further includes a cantilever base (302), which is connected to the trapezoidal screw assembly (202) and, under the action of the trapezoidal screw assembly (202), drives the cantilever base (302) to move horizontally; The cantilever (301) is rotatably connected to the cantilever base (302) via a pin (303), so that the cantilever (301) rotates axially relative to the cantilever base (302) around the pin (303).

5. A winding pre-tensioning device according to claim 4, characterized in that, The cantilever base (302) is provided with two sets of limiting rods (304), and the two sets of limiting rods (304) are vertically distributed to serve as rotational limits for the cantilever (301); The contact portion between the limiting rod (304) and the cantilever (301) is provided with a magnet (304), and the cantilever (301) is magnetically fixed by the magnet (304).

6. A winding pre-tensioning device according to claim 4, characterized in that, The pneumatic pressing assembly (4) also includes a cylinder (402), which is fixedly installed at the end of the cantilever (301) away from the cantilever base (302), and the piston rod (401) is connected to the pressure roller assembly (5) through a floating joint (403); An upper limit limit switch (404), a lower limit limit switch (405), and a winding-up switch (406) are installed on the cylinder (402); the upper limit limit switch (404) and the lower limit limit switch (405) respectively sense the upper limit and lower limit of the piston rod (401); the winding-up switch (406) is used to sense the winding state of the belt roll under the pressure roller assembly (5).

7. A winding pre-tensioning device according to claim 1, characterized in that, The pressure roller assembly (5) also includes a pressure roller seat (502) and two sets of pressure roller floating frames (503). One end of each set of pressure roller floating frames (503) is rotatably connected to the pressure roller seat (502) via the same rotating shaft (504); the other end is respectively equipped with a set of unpowered pressure rollers (501); the two sets of unpowered pressure rollers (501) are pressed onto the surface of the belt roll under the action of the V-shaped distributed pressure roller floating frames (503).

8. A winding pre-tensioning device according to claim 7, characterized in that, The V-shaped distributed pressure roller floating frames (503) are connected by connecting rods (505), and a pre-tensioning spring (506) is sleeved on the connecting rod (505). Under the action of the pre-tensioning spring (506), a pre-tensioning force is provided to the two sets of unpowered pressure rollers (501).

9. A belt rewinder, characterized in that, The winding pre-tensioning device according to any one of claims 1-8 is installed on any one or both sides of the belt winding machine, and the upper surface of the belt roll (200) between the two winding shafts (100) is pressed by the pressure roller assembly (5); and the belt limiting ring (6) abuts against the side of the belt roll (200).

10. A method of using a belt winding machine, characterized in that, Includes the following steps: S1. Equipment assembly: Install and fix the winding pre-tightening device on one or both sides of the belt winding machine, so that the pressure roller assembly (5) corresponds to the belt roll (200) between the two winding shafts (100), and at the same time assemble the belt limiting ring (6) on the winding shaft (100), and clamp the edge of the belt limiting ring (6) by two sets of limiting chucks (201) that are detachably installed on the sliding seat (203); S2, Horizontal position adjustment: The sliding seat (203) is driven to move horizontally by the trapezoidal screw assembly (202), which simultaneously drives the cantilever base (302) and the overall cantilever mechanism (3) to move horizontally, thereby adjusting the horizontal position of the limiting chuck (201) and the belt limiting ring (6), accurately limiting the axial position of the belt limiting ring (6) on the winding shaft (100), realizing the lateral limiting of the belt roll (200) on the winding shaft (100), and the belt limiting ring (6) rotates synchronously with the winding shaft (100); S3, Cantilever Angle Positioning: The vertical axial rotation of the cantilever (301) relative to the cantilever base (302) is achieved by the pin (303). The rotation limit of the cantilever (301) is achieved by the two sets of vertically distributed limit rods (304) on the cantilever base (302). The cantilever (301) is magnetically fixed by the magnet (304) on the limit rod (304), thus completing the angle locking of the cantilever (301) and ensuring the stable working position of the end pneumatic pressing assembly (4) and the pressure roller assembly (5). S4. Pre-tightening pressure adjustment: The pre-tightening spring (506) sleeved on the connecting rod (505) between the pressure roller floating frame (503) provides a constant pressing pre-tightening force for the two sets of symmetrically distributed V-shaped non-powered pressure rollers (501). The two sets of pressure roller floating frames (503) are rotatably connected to the pressure roller seat (502) through the same rotating shaft (504), ensuring that the non-powered pressure roller (501) can adaptively conform to the surface of the belt roll (200). S5. Automated winding operation: After the equipment is started, the cylinder (402) drives the pressure roller assembly (5) to rise and fall vertically through the piston rod (401). Relying on the lower limit limit switch (405) of the cylinder (402) to sense the lowering position of the piston rod (401), the unpowered pressure roller (501) of the pressure roller assembly (5) is pressed against the core surface of the belt roll (200). During operation, the two sets of unpowered pressure rollers (501) are stably pressed against the upper surface of the belt roll (200), and the belt limit ring (6) is used to abut against the limit from the side. At the same time, the winding status of the belt roll (200) is sensed in real time through the winding position switch (406). With the cooperation of constant pretension and precise limit, the belt roll (200) is completed smoothly and neatly winding.

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