A constant speed pulling mechanism

Abstract

The utility model discloses a constant uniform speed's material pulling mechanism relates to silk screen printing device technical field, including the organism, the inside installation of organism rotatable tension roller and feed roller, be provided with tension adjusting mechanism between tension roller and feed roller, tension adjusting mechanism includes fixed on the installation track of organism, the inside sliding joint of installation track has the slide rod. The utility model discloses through setting up the pressure sensor and external drum of setting up the pressure sensor of drum outside can detect the pressure state when current printed matter is conveyed, when the pressure is little, indicate that current printed matter is more loose, and the tension is not enough to influence tension roller uniform speed material pulling, at this moment, will pass through motorized telescopic link to adjust the position of drum, when the pressure is in the set range, then, indicate that tension adjustment is appropriate at this moment, and further guarantee that tension roller can uniform speed material pulling, the setting of the device can automatically adjust the tension, make the tension keep constant, and further make tension roller can uniform speed material pulling.

Description

Technical Field

[0001] This utility model relates to the field of screen printing device technology, specifically a constant speed material pulling mechanism. Background Technology

[0002] In screen printing and other related manufacturing processes, the feeding mechanism plays an indispensable role as a key component ensuring the material is conveyed at a constant speed and tension. An ideal feeding system should maintain stable material tension throughout the entire operation, thereby guaranteeing consistent and reliable print quality. However, traditional feeding mechanisms often face significant technical challenges in practical applications.

[0003] Many existing material pulling mechanisms lack effective tension adjustment mechanisms, making it difficult to maintain constant tension during long-term operation or when handling materials of different materials and thicknesses. This not only affects the quality of printed materials but may also lead to material breakage or loosening, resulting in production interruptions and material waste. Furthermore, due to changes in the operating environment, differences in material properties, and equipment aging, the difficulty of manually adjusting tension further increases, making it particularly challenging to maintain stable print quality. Therefore, this invention proposes a constant-speed, uniform material pulling mechanism. Utility Model Content

[0004] Technical problems to be solved The purpose of this invention is to overcome the shortcomings of the existing technology and provide a constant and uniform material pulling mechanism.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a constant-speed material pulling mechanism, comprising a machine body, inside which a rotatable tension roller and a feed roller are installed. A tension adjusting mechanism is provided between the tension roller and the feed roller. The tension adjusting mechanism includes a mounting rail fixed to the machine body, a sliding rod slidably connected inside the mounting rail, a rotating cylinder rotatably connected to one end of the sliding rod, a pressure sensor disposed outside the rotating cylinder, an outer rotating cylinder sleeved around the pressure sensor, and an electric telescopic rod installed at one end of the mounting rail. The output end of the electric telescopic rod is fixedly connected to the slide rod. By setting a pressure sensor on the outside of the rotating drum and the external rotating drum, the pressure state of the printed material during the current conveying can be detected. When the pressure is low, it means that the printed material is relatively loose and the tension is insufficient, which affects the uniform speed of the tension roller. At this time, the position of the rotating drum will be adjusted by the electric telescopic rod. When the pressure is within the set range, it means that the tension is properly adjusted, thereby ensuring that the tension roller can pull the material at a uniform speed. The device can automatically adjust the tension to keep the tension constant, thereby enabling the tension roller to pull the material at a uniform speed. The tension adjustment mechanism also includes a controller for controlling the electric telescopic rod, the controller being electrically connected to the pressure sensor.

[0007] Preferably, the slide bar has a rotating hole for mounting a rotating cylinder inside, and the rotating cylinder has rotating shafts at both ends, which are rotatably mounted inside the rotating hole.

[0008] Preferably, a bearing is mounted on the outside of the rotating shaft.

[0009] Preferably, one end of the rotating shaft is also connected to an electric slip ring, the pressure sensor is connected to the electric slip ring via a wire, and the electric slip ring is connected to the controller via a second wire.

[0010] Preferably, a rotatable tension roller is also installed inside the machine body.

[0011] Preferably, one end of the tension roller is provided with a drive motor and a reducer, and the drive motor drives the reducer to rotate the tension roller.

[0012] Preferably, there are two feed rollers, and there is a gap between the two feed rollers for material to pass through.

[0013] Beneficial effects:

[0014] Compared with existing technologies, this constant-speed material pulling mechanism has the following advantages: This invention uses an external pressure sensor on the rotating drum to detect the pressure state of the printed material during transport. When the pressure is low, it indicates that the printed material is loose and the tension is insufficient, affecting the uniform speed of the tension roller. At this time, the position of the rotating drum is adjusted by an electric telescopic rod. When the pressure is within the set range, it indicates that the tension is properly adjusted, thus ensuring that the tension roller can pull the material at a uniform speed. This device can automatically adjust the tension to keep it constant, thereby enabling the tension roller to pull the material at a uniform speed. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 For the present utility model Figure 2Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a side sectional view of the present invention.

[0017] In the picture: 1. Machine body; 2. Tension roller; 3. Tension adjustment mechanism; 4. Electric slip ring; 5. Wire; 6. Wire 2; 7. Tension roller; 8. Drive motor; 9. Reducer; 10. Feed roller; 301. Mounting track; 302. Slide bar; 303. Rotary drum; 304. Pressure sensor; 305. External rotary drum; 306. Electric telescopic rod; 307. Controller; 3021. Rotary hole; 3031. Rotary shaft. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 As shown, this utility model provides a technical solution: a constant speed material pulling mechanism, including a machine body 1. A rotatable tension roller 2 and a feed roller 10 are installed inside the machine body 1. A tension adjusting mechanism 3 is provided between the tension roller 2 and the feed roller 10. The tension adjusting mechanism 3 includes a mounting rail 301 fixed to the machine body 1. A slide rod 302 is slidably connected inside the mounting rail 301. A rotating cylinder 303 is rotatably connected to one end of the slide rod 302. A pressure sensor 304 is installed outside the rotating cylinder 303. An external rotating cylinder 305 is sleeved around the pressure sensor 304. An electric telescopic rod 306 is installed at one end of the mounting rail 301. The output end of the electric telescopic rod 306 is fixedly connected to the slide rod 302. The pressure sensor 304 and the external rotating drum 305 set on the outside of the rotating drum 303 can detect the pressure state of the printed material during the conveying process. When the pressure is low, it means that the printed material is relatively loose and the tension is insufficient, which affects the uniform speed of the tension roller 2. At this time, the electric telescopic rod 306 will adjust the position of the rotating drum 303. When the pressure is within the set range, it means that the tension is properly adjusted, thus ensuring that the tension roller 2 can pull the material at a uniform speed. The device can automatically adjust the tension to keep the tension constant, thereby enabling the tension roller 2 to pull the material at a uniform speed. In this utility model, the tension adjustment mechanism 3 also includes a controller 307 for controlling the electric telescopic rod 306, and the controller 307 is electrically connected to the pressure sensor 304.

[0020] Please refer to the following carefully. Figure 2 and Figure 3 The slide bar 302 has a rotating hole 3021 inside for mounting the rotating cylinder 303. The rotating cylinder 303 has a rotating shaft 3031 at both ends. The rotating shaft 3031 is rotatably mounted inside the rotating hole 3021. The rotating shaft 3031 is equipped with a bearing on its outside.

[0021] Please refer to the following carefully. Figure 3 One end of the rotating shaft 3031 is also connected to an electric slip ring 4. The pressure sensor 304 is connected to the electric slip ring 4 through a wire 5, and the electric slip ring 4 is connected to the controller 307 through a second wire 6.

[0022] Please refer to the following carefully. Figure 1 and Figure 4 The machine body 1 is also equipped with a rotatable tension roller 7. One end of the tension roller 2 is equipped with a drive motor 8 and a reducer 9. The drive motor 8 drives the reducer 9 to rotate the tension roller 2. There are two feed rollers 10, and there is a gap between the two feed rollers 10 for the material to pass through.

[0023] Working principle: The pressure sensor 304 detects the pressure state of the printed material during transport. When the pressure is low, it indicates that the printed material is loose and the tension is insufficient, affecting the uniform speed of the tension roller 2. At this time, the position of the rotating drum 303 is adjusted by the electric telescopic rod 306. When the pressure is within the set range, it indicates that the tension is properly adjusted, thus ensuring that the tension roller 2 can pull the material at a uniform speed. The device can automatically adjust the tension to keep it constant, thereby enabling the tension roller 2 to pull the material at a uniform speed.

[0024] In summary, this invention achieves real-time monitoring and automatic adjustment of tension during material transport by introducing a tension adjustment mechanism that includes a pressure sensor and an electric telescopic rod. When the system detects insufficient tension in the current material, the position of the rotating drum can be adjusted via the electric telescopic rod to restore the tension to the set range. This design not only improves the accuracy and response speed of tension control but also reduces the need for manual intervention, greatly enhancing the continuity and stability of production. In conclusion, this invention provides a more intelligent and efficient material handling solution, opening up new avenues for solving problems existing in the prior art.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A constant-speed material pulling mechanism, comprising a body (1), characterized in that: The machine body (1) is equipped with a rotatable tension roller (2) and a feed roller (10). A tension adjustment mechanism (3) is provided between the tension roller (2) and the feed roller (10). The tension adjustment mechanism (3) includes a mounting rail (301) fixed on the machine body (1). A slide rod (302) is slidably connected inside the mounting rail (301). A rotating cylinder (303) is rotatably connected to one end of the slide rod (302). A pressure sensor (304) is provided outside the rotating cylinder (303). An external rotating cylinder (305) is sleeved outside the pressure sensor (304). An electric telescopic rod (306) is installed at one end of the mounting rail (301). The output end of the electric telescopic rod (306) is fixedly connected to the slide rod (302). The tension adjustment mechanism (3) further includes a controller (307) for controlling the electric telescopic rod (306), the controller (307) being electrically connected to the pressure sensor (304).

2. The constant-speed material pulling mechanism according to claim 1, characterized in that: The slide bar (302) has a rotating hole (3021) for mounting the rotating cylinder (303) inside. The rotating cylinder (303) has a rotating shaft (3031) at both ends. The rotating shaft (3031) is rotatably mounted inside the rotating hole (3021).

3. The constant-speed material pulling mechanism according to claim 2, characterized in that: The rotating shaft (3031) is externally mounted with a bearing.

4. The constant-speed material pulling mechanism according to claim 2, characterized in that: One end of the rotating shaft (3031) is also connected to an electric slip ring (4), the pressure sensor (304) is connected to the electric slip ring (4) through a wire (5), and the electric slip ring (4) is connected to the controller (307) through a second wire (6).

5. The constant-speed material pulling mechanism according to claim 1, characterized in that: The machine body (1) is also equipped with a rotatable tension roller (7).

6. The constant-speed material pulling mechanism according to claim 1, characterized in that: One end of the tension roller (2) is provided with a drive motor (8) and a reducer (9), and the drive motor (8) drives the reducer (9) to rotate the tension roller (2).

7. The constant-speed material pulling mechanism according to claim 1, characterized in that: There are two feed rollers (10), and there is a gap between the two feed rollers (10) for material to pass through.

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