Tensioner convenient to adjust

Abstract

The utility model relates to the technical field of tensioners, in particular to a tensioner convenient to adjust, which comprises an outer frame, damping wheels are rotatably connected to two sides of the outer frame through rotating shafts, two groups of adjusting mechanisms are arranged on the inner side of the outer frame, and two groups of oiling mechanisms are arranged on the inner side of the outer frame at the front ends of the adjusting mechanisms. The front end of the outer frame is rotationally connected with two sets of synchronous wheels, the outer sides of the two sets of synchronous wheels are jointly rotationally connected with a synchronous belt, a motor is installed at the front end of the outer frame through an installation plate, an output shaft of the motor is fixedly connected with one set of synchronous wheels, and the positions of guide wheels are independently adjusted through two sets of electric telescopic rods to form an S-shaped path. Certain mechanical vibration can be absorbed through a spring on a sliding rod, the shaking error during cable transmission is reduced, reverse rotation of a storage box and an outer tooth rotating shaft is achieved through a planetary gear set, and uniform coverage of lubricating oil is achieved by combining reciprocating motion of a ball and a sliding groove.

Description

Technical Field

[0001] This utility model relates to the field of tensioner technology, and in particular to a tensioner that is easy to adjust. Background Technology

[0002] A tensioner is a device used to precisely control the tension of materials (such as cables, films, strips, fabrics, etc.) during processing or transmission. It is widely used in industries such as textiles, printing, packaging, wire and cable, metal processing, and plastic film production. Its core function is to maintain the stability of material tension to ensure the continuity of the production process and the consistency of product quality.

[0003] Existing tensioners cannot precisely adjust the capacity during cable transmission. After prolonged use, the lubricating grease on the guide wheel dries out, exacerbating friction loss and accelerating component damage. Worn guide wheels increase running resistance, leading to increased motor load and energy consumption. Therefore, we propose a tensioner that is easy to adjust. Utility Model Content

[0004] The purpose of this invention is to provide a tensioner that is easy to adjust, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an outer frame, with damping wheels rotatably connected to both sides of the outer frame via rotating shafts. Two sets of adjustment mechanisms are provided on the inner side of the outer frame, and two sets of oiling mechanisms are provided on the inner side of the outer frame at the front end of the adjustment mechanisms. Two sets of synchronous pulleys are rotatably connected to the front end of the outer frame, and a synchronous belt is rotatably connected to the outer sides of the two sets of synchronous pulleys. A motor is mounted on the front end of the outer frame via a mounting plate, and the output shaft of the motor is fixedly connected to one set of synchronous pulleys.

[0006] Preferably, the adjustment mechanism includes a fixed block fixedly connected to the outer frame, a slide rod fixedly connected to the inner side of the fixed block, a first slider slidably connected to the outer side of the slide rod, two sets of electric telescopic rods installed on the inner side of the fixed block, and the output shaft of the electric telescopic rods fixedly connected to the first slider.

[0007] Preferably, a spring is provided at the lower end of the first slider on the outer side of the slide rod, one end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the first slider.

[0008] Preferably, the front end of the first slider is fixedly connected to the second slider, and the front end of the second slider is rotatably connected to the guide wheel.

[0009] Preferably, the oiling mechanism includes a chuck rotatably connected to the outer frame, three sets of planetary gears are meshed on the inner side of the chuck, and an external gear shaft is meshed on the outer side of the three sets of planetary gears. One end of the external gear shaft is fixedly connected to a synchronous pulley.

[0010] Preferably, a groove is provided on the outer side of the external gear shaft, a ball is slidably connected to the inner side of the groove, a drive shaft is fixedly connected to the outer side of the ball, and a storage box is fixedly connected to one end of the drive shaft.

[0011] Preferably, the inner side of the storage box has multiple sets of drainage grooves, the inner side of the storage box is fixedly connected to a brush strip, the outer side of the storage box is slidably connected to a hollow plate, and one end of the hollow plate is fixedly connected to a chuck.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] Two sets of electric telescopic rods independently adjust the position of the guide wheels to form an "S" shaped path, precisely control the cable tension, and adapt to the tension requirements of different materials. The spring on the slide rod can absorb a certain amount of mechanical vibration, reducing the jitter error during cable transmission. The planetary gear set enables the storage box and the external gear shaft to rotate in opposite directions. Combined with the reciprocating motion of the ball and the slide groove, the lubricating oil is evenly covered on the surface of the guide wheel, extending the lubrication cycle. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a tensioner that is easy to adjust according to the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the overall structure of a tensioner that is easy to adjust according to this utility model;

[0017] Figure 3 This is a cross-sectional view of a tensioner component of the present invention that is easy to adjust. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of a tensioner component of the present invention that is easy to adjust;

[0019] Figure 5 This is a cross-sectional view of a tensioner component of the present invention that is easy to adjust. Figure 2 .

[0020] In the diagram: 1. Outer frame; 2. Damping wheel; 3. Adjustment mechanism; 31. Fixing block; 32. Slide rod; 33. First slider; 34. Electric telescopic rod; 35. Spring; 36. Second slider; 37. Guide wheel; 4. Oiling mechanism; 41. Chuck; 42. Planetary gear; 43. External gear shaft; 44. Slide groove; 45. Ball bearing; 46. Drive shaft; 47. Storage box; 48. Slot; 49. Brush strip; 410. Hollow plate; 5. Synchronous pulley; 6. Synchronous belt; 7. Motor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] This utility model provides, for example Figures 1-5 The tensioner shown includes an outer frame 1. Damping wheels 2 are rotatably connected to both sides of the outer frame 1 via rotating shafts. Two sets of adjustment mechanisms 3 are provided on the inner side of the outer frame 1. Two sets of oiling mechanisms 4 are provided on the inner side of the outer frame 1 at the front end of the adjustment mechanism 3. Two sets of synchronous pulleys 5 are rotatably connected to the front end of the outer frame 1. A synchronous belt 6 is rotatably connected to the outer sides of the two sets of synchronous pulleys 5. A motor 7 is mounted on the front end of the outer frame 1 via a mounting plate. The output shaft of the motor 7 is fixedly connected to one set of synchronous pulleys 5.

[0023] In this embodiment, the adjustment mechanism 3 includes a fixed block 31 fixedly connected to the outer frame 1, a slide rod 32 fixedly connected to the inner side of the fixed block 31, a first slider 33 slidably connected to the outer side of the slide rod 32, and two sets of electric telescopic rods 34 installed on the inner side of the fixed block 31. The output shaft of the electric telescopic rod 34 is fixedly connected to the first slider 33.

[0024] Specifically, the output shafts of the two sets of electric telescopic rods 34 fixedly installed on the fixed block 31 extend simultaneously, and the electric telescopic rods 34 drive the first slider 33 to move outside the slider 32.

[0025] In this embodiment, a spring 35 is provided at the lower end of the first slider 33 on the outer side of the slide bar 32. One end of the spring 35 is fixedly connected to the fixing block 31, and the other end of the spring 35 is fixedly connected to the first slider 33.

[0026] Specifically, the spring 35 on the outside of the slide bar 32 can absorb mechanical impact energy and slow down vibration transmission.

[0027] In this embodiment, the front end of the first slider 33 is fixedly connected to the second slider 36, and the front end of the second slider 36 is rotatably connected to the guide wheel 37.

[0028] Specifically, the first slider 33 drives the guide wheel 37 to move downward through the second slider 36, so that the cable is embedded in the recess.

[0029] In this embodiment, the oiling mechanism 4 includes a chuck 41 rotatably connected to the outer frame 1. Three sets of planetary gears 42 are meshed on the inner side of the chuck 41, and an external gear shaft 43 is meshed on the outer side of the three sets of planetary gears 42. One end of the external gear shaft 43 is fixedly connected to the synchronous pulley 5.

[0030] Specifically, the synchronizing wheel 5 drives the external gear shaft 43 in the oiling mechanism 4 to rotate, and the external gear shaft 43 drives the chuck 41 to rotate in the opposite direction through three sets of planetary gears 42.

[0031] In this embodiment, a groove 44 is provided on the outer side of the external gear shaft 43, a ball bearing 45 is slidably connected to the inner side of the groove 44, a drive shaft 46 is fixedly connected to the outer side of the ball bearing 45, and a storage box 47 is fixedly connected to one end of the drive shaft 46.

[0032] Specifically, when the external gear shaft 43 rotates in the opposite direction to the storage box 47, it can drive the ball bearing 45 to slide in the groove 44, and the ball bearing 45 drives the transmission shaft 46 to move accordingly.

[0033] In this embodiment, multiple sets of troughs 48 are provided on the inner side of the storage box 47, a brush strip 49 is fixedly connected to the inner side of the storage box 47, and a hollow plate 410 is slidably connected to the outer side of the storage box 47. One end of the hollow plate 410 is fixedly connected to the chuck 41.

[0034] Specifically, the drive shaft 46 drives the storage box 47 to rotate and slide repeatedly inside the hollow plate 410. The lubricating oil in the storage box 47 flows out through the trough 48 and is absorbed by the brush strip 49. The brush strip 49 applies the lubricating oil to the outside of the guide wheel 37.

[0035] Working principle: In use, one end of the cable is placed on the upper end of a set of damping wheels 2 and passed through a groove on one side of the outer frame 1. Then, it passes sequentially through the upper end of the guide wheel 37 in one set of adjustment mechanisms 3 and the lower end of another set of guide wheels 37, and passes through a groove on the other side of the outer frame 1. This drives the output shafts of the two sets of electric telescopic rods 34 fixed by the fixing block 31 in one set of adjustment mechanisms 3 to extend simultaneously. The electric telescopic rods 34 drive the first slider 33 to move outside the slide rod 32. The first slider 33 drives the guide wheel 37 to move downward through the second slider 36, so that the cable is embedded in the recess. Then, the output shaft of the electric telescopic rod 34 in the other set of adjustment mechanisms 3 is extended, driving the guide wheel 37 to move upward, so that the cable is embedded in the recess. Under the tension of the two sets of guide wheels 37, the cable presents an "S" shape. The output shaft of the electric telescopic rod 34 is adjusted according to the needs to control the tension. After completion, the cable can be driven for transmission. The cable will vibrate during transmission. The spring 35 on the outside of the slide rod 32 can absorb the mechanical impact energy and reduce the vibration. Vibration is transmitted, and after prolonged use, the lubricating grease on the guide wheel 37 dries out. When the electric telescopic rod 34 is not driven, the guide wheel 37 is concentric with the storage box 47. The drive motor 7 rotates, driving a set of synchronous pulleys 5 to rotate. One set of synchronous pulleys 5 drives another set of synchronous pulleys 5 to rotate via the synchronous belt 6. The synchronous pulleys 5 drive the external gear shaft 43 in the oiling mechanism 4 to rotate. The external gear shaft 43 drives the chuck 41 to rotate in the opposite direction via three sets of planetary gears 42. The chuck 41 drives the storage box 47 to rotate via the hollow plate 410. When the external gear shaft 43 and the storage box 47 rotate in opposite directions, the ball bearing 45 can slide in the groove 44. The ball bearing 45 drives the transmission shaft 46 to move accordingly. The transmission shaft 46 drives the storage box 47 to rotate and slide repeatedly inside the hollow plate 410. The lubricating oil in the storage box 47 flows out through the trough 48 and is absorbed by the brush strip 49. The brush strip 49 applies the lubricating oil to the outside of the guide wheel 37. The lubricating oil flows into the pit through the inclined surface of the guide wheel 37, reducing friction loss and preventing damage to the parts.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An easily adjustable tensioner, comprising an outer frame (1), characterized in that: Both sides of the outer frame (1) are rotatably connected to damping wheels (2) via rotating shafts. Two sets of adjustment mechanisms (3) are provided on the inner side of the outer frame (1). Two sets of oiling mechanisms (4) are provided on the inner side of the outer frame (1) at the front end of the adjustment mechanism (3). Two sets of synchronous pulleys (5) are rotatably connected to the front end of the outer frame (1). A synchronous belt (6) is rotatably connected to the outer sides of the two sets of synchronous pulleys (5). A motor (7) is mounted on the front end of the outer frame (1) via a mounting plate. The output shaft of the motor (7) is fixedly connected to a set of synchronous pulleys (5).

2. The tensioner for easy adjustment according to claim 1, characterized in that: The adjustment mechanism (3) includes a fixed block (31) fixedly connected to the outer frame (1), a slide rod (32) fixedly connected to the inner side of the fixed block (31), a first slider (33) slidably connected to the outer side of the slide rod (32), and two sets of electric telescopic rods (34) installed on the inner side of the fixed block (31). The output shaft of the electric telescopic rod (34) is fixedly connected to the first slider (33).

3. The tensioner for easy adjustment according to claim 2, characterized in that: A spring (35) is provided at the lower end of the first slider (33) on the outer side of the slide bar (32). One end of the spring (35) is fixedly connected to the fixing block (31), and the other end of the spring (35) is fixedly connected to the first slider (33).

4. The tensioner for easy adjustment according to claim 2, characterized in that: The front end of the first slider (33) is fixedly connected to the second slider (36), and the front end of the second slider (36) is rotatably connected to the guide wheel (37).

5. The adjustable tensioner according to claim 1, characterized in that: The oiling mechanism (4) includes a chuck (41) rotatably connected to the outer frame (1). The inner side of the chuck (41) is meshed with three sets of planetary gears (42), and the outer sides of the three sets of planetary gears (42) are meshed with an external gear shaft (43). One end of the external gear shaft (43) is fixedly connected to the synchronous pulley (5).

6. The tensioner for easy adjustment according to claim 5, characterized in that: The outer side of the external gear shaft (43) is provided with a sliding groove (44), and a ball (45) is slidably connected to the inner side of the sliding groove (44). A drive shaft (46) is fixedly connected to the outer side of the ball (45), and a storage box (47) is fixedly connected to one end of the drive shaft (46).

7. The tensioner for easy adjustment according to claim 6, characterized in that: The storage box (47) has multiple sets of sluices (48) on its inner side. A brush strip (49) is fixedly connected to the inner side of the storage box (47). A hollow plate (410) is slidably connected to the outer side of the storage box (47). One end of the hollow plate (410) is fixedly connected to the chuck (41).

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