Unreeling device capable of automatically adjusting tension

Abstract

The utility model relates to the technical field of label unwinding, in particular to an unwinding device capable of automatically adjusting tension. An unwinding mechanism and a guide mechanism are arranged on the upper side of the bottom plate, an adjusting mechanism is arranged on the upper side of the bottom plate and comprises an adjusting roller, a right frame plate and a left frame plate are arranged on the two sides of the adjusting roller respectively, the bottom ends of the right frame plate and the left frame plate are fixedly connected with the top end of the bottom plate, and a screw groove is formed in the side, close to the adjusting roller, of the right frame plate. And a screw is rotationally arranged on the inner side of the screw groove. The second motor is arranged to drive the driving gear to rotate, the driving gear is matched with meshing of the driven gear to enable the connecting shaft to rotate, then the threaded rod is made to rotate, when the threaded rod rotates, the threaded rod sleeve ascends or descends along with the threaded rod, and meanwhile the adjusting roller is kept horizontal when moving up and down through sliding of the sliding rod sleeve on the sliding rod. Therefore, the tension of the device is adjusted, and the problem that self-adhesive labels are damaged due to the fact that the tension of the unwinding device cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of label unwinding, in particular to an unwinding device capable of automatically adjusting tension. Background Art

[0002] Compared with traditional labels, self-adhesive labels have the advantages of no need for glue, paste, water, no pollution, saving labeling time, etc. They have a wide range of applications and are convenient and fast. When producing self-adhesive labels, an unwinding device is usually used to unwind the self-adhesive labels. However, the unwinding device under current technology cannot adjust the tension. When the tension is too large or too small, it will affect the unwinding of the self-adhesive label and even damage the self-adhesive label. In view of this, we propose an unwinding device that automatically adjusts the tension. Utility Model Content

[0003] The utility model aims to provide an unwinding device with automatic tension adjustment to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides an unwinding device with automatic tension adjustment, comprising a base plate, an unwinding mechanism and a guiding mechanism are provided on the upper side of the base plate, an adjusting mechanism is provided on the upper side of the base plate, the adjusting mechanism comprises an adjusting roller, a right frame plate and a left frame plate are provided on both sides of the adjusting roller, the bottom ends of the right frame plate and the left frame plates are fixedly connected to the top end of the base plate, a screw groove is provided on the side of the right frame plate close to the adjusting roller, a screw is rotatably provided on the inner side of the screw groove, a screw sleeve is threadedly provided on the outer side of the screw, a limiting block is fixedly connected to one side of the screw sleeve, and the limiting block is rotatably connected to the adjusting roller.

[0005] As a further improvement of the technical solution, a connecting groove is provided at the lower side of the screw groove, and a connecting shaft is rotatably provided inside the connecting groove.

[0006] As a further improvement of the present technical solution, a fixing plate is fixedly connected to a side of the right frame plate close to the left frame plate, a second motor is fixedly connected to a side of the fixing plate close to the left frame plate, a driving groove is provided at the bottom of the connecting groove, an output shaft of the second motor passes through the fixing plate and one side of the right frame plate and extends into the driving groove, a driving gear is fixedly connected to one end of the second motor, one end of the connecting shaft extends into the driving groove, a driven gear is fixedly connected to one end of the connecting shaft, and the driving gear is meshed with the driven gear.

[0007] As a further improvement of the technical solution, a sliding bar groove is opened on the side of the left frame plate close to the right frame plate, a sliding bar is fixedly arranged on the inner side of the sliding bar groove, a sliding bar sleeve is slidably arranged on the outer side of the sliding bar, and one side of the sliding bar sleeve is fixedly connected to a limiting block.

[0008] As a further improvement of the technical solution, the guide mechanism includes a plurality of guide plates, and a guide roller is rotatably provided between two guide plates at corresponding positions.

[0009] As a further improvement of the technical solution, the unwinding mechanism includes an unwinding roller and limiting plates fixedly arranged on both sides of the unwinding roller, and a support frame is arranged on the side of the limiting plate away from the unwinding roller.

[0010] As a further improvement of the present technical solution, a support block is fixedly connected to the top of the support frame, a connecting block is rotatably provided on the top of the support block, one side of the connecting block is fixedly connected to one side of the limiting plate, one side of one of the support frames is fixedly connected to an L-shaped connecting plate, one side of the L-shaped connecting plate is fixedly connected to a first motor, the output shaft of the first motor passes through the L-shaped connecting plate and is fixedly connected to a protrusion, and the protrusion is movably inserted into the inner side of the connecting block.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the unwinding device with automatic tension adjustment, a second motor is arranged to drive the driving gear to rotate, and the meshing of the driving gear and the driven gear causes the connecting shaft to rotate, thereby causing the screw to rotate. When the screw rotates, the screw sleeve rises or falls accordingly. At the same time, the sliding of the slide rod sleeve on the slide rod allows the adjusting roller to remain horizontal when moving up and down, thereby adjusting the tension of the device, thereby solving the problem of damage to the self-adhesive label due to the inability to adjust the tension of the unwinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the unwinding mechanism of the utility model;

[0015] Figure 3 It is a cross-sectional structural schematic diagram of the utility model adjustment mechanism;

[0016] Figure 4 It is a structural schematic diagram of the utility model guide mechanism;

[0017] Figure 5 Utility Model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] The meaning of each number in the figure is:

[0019] 1. Unwinding mechanism; 11. Unwinding roller; 13. Limiting plate; 14. Support frame; 15. L-shaped connecting plate; 16. First motor; 17. Support block; 18. Connecting block; 19. Bump; 2. Guide mechanism; 21. Guide plate; 22. Guide roller; 3. Adjusting mechanism; 31. Adjusting roller; 32. Right frame plate; 33. Left frame plate; 34. Screw groove; 35. Screw; 36. Screw sleeve; 37. Fixed plate; 38. Second motor; 39. Driving groove; 311. Driving gear; 312. Driven gear; 313. Connecting shaft; 314. Slide rod groove; 315. Slide rod; 316. Slide rod sleeve; 317. Limiting block; 4. Bottom plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] Example 1

[0023] See also Figure 1-Figure 5As shown, the present embodiment provides an unwinding device for automatically adjusting the tension, including a bottom plate 4, a unwinding mechanism 1 and a guide mechanism 2 are arranged on the upper side of the bottom plate 4, an adjusting mechanism 3 is arranged on the upper side of the bottom plate 4, the adjusting mechanism 3 includes an adjusting roller 31, and right frame plates 32 and left frame plates 33 are arranged on both sides of the adjusting roller 31 respectively, the bottom ends of the right frame plates 32 and the left frame plates 33 are fixedly connected to the top end of the bottom plate 4, a screw groove 34 is opened on the side of the right frame plate 32 close to the adjusting roller 31, a screw 35 is rotatably arranged on the inner side of the screw groove 34, and a screw sleeve 36 is threadedly arranged on the outer side of the screw 35, when the screw 35 rotates, the screw sleeve 36 is moved up and down through the threaded connection between the screw 35 and the screw sleeve 36, one side of the screw sleeve 36 is fixedly connected to a limit block 317, the limit block 317 is rotatably connected to the adjusting roller 31, when the screw sleeve 36 moves up and down, it drives the limit block 317 to move, so as to adjust the height of the adjusting roller 31, and adjust the tension of the device when unwinding.

[0024] A fixing plate 37 is fixedly connected to one side of the right frame plate 32 close to the left frame plate 33, and a second motor 38 is fixedly connected to one side of the fixing plate 37 close to the left frame plate 33. By fixing the second motor 38 on the fixing plate 37, it is avoided that the side wall of the right frame plate 32 becomes thinner due to the opening of a driving groove 39 at the bottom of the right frame plate 32, and when the second motor 38 runs for a long time, vibration is generated to cause damage to the right frame plate 32. A driving groove 39 is opened at the bottom of the connection groove, and the output shaft of the second motor 38 passes through one side of the fixing plate 37 and the right frame plate 32. The second motor 38 is fixedly connected to the driving gear 311 at one end, and a connecting groove is provided at the lower side of the screw groove 34. A connecting shaft 313 is rotatably provided inside the connecting groove. One end of the connecting shaft 313 extends into the driving groove 39, and one end of the connecting shaft 313 is fixedly connected to a driven gear 312. The driving gear 311 is meshed with the driven gear 312 to enable the second motor 38 to drive the connecting shaft 313 to rotate, thereby causing the screw 35 to rotate, so as to adjust the tension of the device.

[0025] A slide bar groove 314 is provided on one side of the left frame plate 33 close to the right frame plate 32, a slide bar 315 is fixedly provided on the inner side of the slide bar groove 314, a slide bar sleeve 316 is slidably provided on the outer side of the slide bar 315, and a limiting block 317 is fixedly connected to one side of the slide bar sleeve 316. When the screw rod 35 rotates to drive the adjusting roller 31 to move, the movement of the adjusting roller 31 is guided by the sliding of the slide bar sleeve 316 on the slide bar 315, so as to prevent the adjusting roller 31 from slipping when moving and keep the adjusting roller 31 level.

[0026] The guide mechanism 2 includes a plurality of guide plates 21, and a guide roller 22 is rotatably arranged between two guide plates 21 at corresponding positions. When the device is unwinding, the arrangement of the plurality of guide rollers 22 makes the unwinding of the material more stable.

[0027] The unwinding mechanism 1 includes an unwinding roller 11 and limit plates 13 fixedly arranged on both sides of the unwinding roller 11. When the device is unwinding, the limit plates 13 are set to prevent the material from sliding sideways. A support frame 14 is set on the side of the limit plate 13 away from the unwinding roller 11. The top of the support frame 14 is fixedly connected to a support block 17. A connecting block 18 is rotatably set on the top of the support block 17. One side of the connecting block 18 is fixedly connected to one side of the limit plate 13. One side of one of the support frames 14 is fixedly connected to an L-shaped connecting plate 15. One side of the L-shaped connecting plate 15 is fixedly connected to a first motor 16. The output shaft of the first motor 16 passes through the L-shaped connecting plate 15 and is fixedly connected to a protrusion 19. The setting that the protrusion 19 is movably inserted into the inner side of the connecting block 18 facilitates the replacement and installation of the unwinding roller 11, and the protrusion 19 is set as a rectangular parallelepiped, so that when the first motor 16 is running, it drives the connecting block 18 to rotate, so that the device unwinds the material.

[0028] When the unwinding device of the present embodiment that automatically adjusts the tension is used, the user places the unwinding roller 11 on the upper side of the two support frames 14, and inserts the protrusion 19 of the first motor 16 into the connecting block 18, passes the material through the guide roller 22 and the surface of the adjusting roller 31 in turn, and then turns on the first motor 16 to rotate the unwinding roller 11 to unwind the material. When it is necessary to adjust the tension of the device, the second motor 38 is turned on to rotate the driving gear 311, and the connecting shaft 313 is rotated through the engagement of the driving gear 311 and the driven gear 312, thereby rotating the screw rod 35 to adjust the height of the screw rod sleeve 36, so as to adjust the height of the adjusting roller 31. At the same time, the sliding of the sliding rod sleeve 316 on the sliding rod 315 keeps the adjusting roller 31 balanced, so as to prevent the adjusting roller 31 from sliding sideways during the movement and affecting the unwinding of the material.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An unwinding device with automatic tension adjustment, comprising a bottom plate (4), an unwinding mechanism (1) and a guiding mechanism (2) being arranged on the upper side of the bottom plate (4), characterized in that: An adjusting mechanism (3) is provided on the upper side of the bottom plate (4), and the adjusting mechanism (3) comprises an adjusting roller (31). A right frame plate (32) and a left frame plate (33) are provided on both sides of the adjusting roller (31), respectively. The bottom ends of the right frame plate (32) and the left frame plate (33) are fixedly connected to the top end of the bottom plate (4). A screw groove (34) is provided on the side of the right frame plate (32) close to the adjusting roller (31). A screw (35) is rotatably provided on the inner side of the screw groove (34). A screw sleeve (36) is threadedly provided on the outer side of the screw (35). A limit block (317) is fixedly connected to one side of the screw sleeve (36), and the limit block (317) is rotatably connected to the adjusting roller (31).

2. The unwinding device with automatic tension adjustment according to claim 1 is characterized in that: A connecting groove is provided at the lower side of the screw groove (34), and a connecting shaft (313) is rotatably arranged inside the connecting groove.

3. The unwinding device with automatic tension adjustment according to claim 2 is characterized in that: A fixing plate (37) is fixedly connected to one side of the right frame plate (32) close to the left frame plate (33); a second motor (38) is fixedly connected to one side of the fixing plate (37) close to the left frame plate (33); a driving groove (39) is provided at the bottom of the connecting groove; an output shaft of the second motor (38) passes through the fixing plate (37) and one side of the right frame plate (32) and extends into the driving groove (39); one end of the second motor (38) is fixedly connected to a driving gear (311); one end of the connecting shaft (313) extends into the driving groove (39); one end of the connecting shaft (313) is fixedly connected to a driven gear (312); the driving gear (311) is meshed with the driven gear (312).

4. The unwinding device with automatic tension adjustment according to claim 1, characterized in that: A slide bar groove (314) is provided on one side of the left frame plate (33) close to the right frame plate (32), a slide bar (315) is fixedly arranged inside the slide bar groove (314), a slide bar sleeve (316) is slidably arranged outside the slide bar (315), and one side of the slide bar sleeve (316) is fixedly connected to a limiting block (317).

5. The unwinding device with automatic tension adjustment according to claim 1, characterized in that: The guide mechanism (2) comprises a plurality of guide plates (21), and a guide roller (22) is rotatably arranged between two guide plates (21) at corresponding positions.

6. The unwinding device with automatic tension adjustment according to claim 1, characterized in that: The unwinding mechanism (1) comprises an unwinding roller (11) and limiting plates (13) fixedly arranged on both sides of the unwinding roller (11); a support frame (14) is arranged on the side of the limiting plate (13) away from the unwinding roller (11).

7. The unwinding device with automatic tension adjustment according to claim 6, characterized in that: The top of the support frame (14) is fixedly connected to a support block (17), the top of the support block (17) is rotatably provided with a connection block (18), one side of the connection block (18) is fixedly connected to one side of the limit plate (13), one side of one of the support frames (14) is fixedly connected to an L-shaped connection plate (15), one side of the L-shaped connection plate (15) is fixedly connected to a first motor (16), an output shaft of the first motor (16) passes through the L-shaped connection plate (15) and is fixedly connected to a protrusion (19), and the protrusion (19) is movably plugged into the inner side of the connection block (18).

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