Material belt disc tensioning mechanism

Abstract

The utility model relates to a material belt disc tensioning mechanism which comprises a material belt disc, a driving unit, a rotating disc, a tensioning pressing disc and at least two tensioning pressing rods. Mounting holes are formed in the rotating disc in the axial direction and comprise a screw mounting hole and a pressing disc mounting hole which are communicated with each other, a first step is arranged between the screw mounting hole and the pressing disc mounting hole, and at least two through holes are formed in the hole wall, corresponding to the pressing disc mounting hole, of the rotating disc in the radial direction. The tensioning pressing disc comprises a pressing disc neck and a pressing disc tail, the outer diameter of the pressing disc neck is gradually increased in the direction away from the pressing disc tail, the tensioning pressing disc is arranged in the pressing disc installation hole in a penetrating mode, a pressing disc spring is clamped between the end face of the pressing disc tail and the first step, an operation screw is arranged in the tensioning pressing disc in a penetrating mode, and the tail of the operation screw is connected with the screw installation hole in a threaded fit mode. The pressure plate spring is sleeved on the periphery of the operation screw. Each tensioning pressing rod is arranged in a corresponding through hole in the rotating disc in a penetrating mode, and the two ends of each tensioning pressing rod abut against the inner ring of the material belt disc and the neck of the pressing disc respectively. The material belt disc tensioning mechanism can prevent the material belt from deviating.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet material transmission, in particular to a material belt reel tensioning mechanism. Background Art

[0002] Thin sheet materials such as adhesive tape and printed materials are typically wound onto reels for delivery, which then rotate to unwind. Existing reels are bulky, restricting layout space. During unwinding, the reels are unstable, which can easily cause the tape to deviate and become unstable during delivery, impacting product quality and production efficiency. Utility Model Content

[0003] In view of this, the technical problem to be solved by the present invention is to provide a material tape reel tensioning mechanism that can prevent the material tape from deviating.

[0004] In order to solve the above technical problems, the embodiment of the present invention provides a tape reel tensioning mechanism, comprising a tape reel and a drive unit, wherein the drive unit has a power output shaft; the tape reel tensioning mechanism further comprises:

[0005] A turntable is fixedly mounted on the power output shaft, the material belt disk is sleeved on the turntable, a mounting hole is axially opened in the turntable, the mounting hole includes a screw mounting hole and a pressure plate mounting hole that are interconnected, the hole diameter of the screw mounting hole is smaller than the pressure plate mounting hole, a first step is provided between the screw mounting hole and the pressure plate mounting hole, at least two through holes are radially opened on the hole wall of the turntable corresponding to the pressure plate mounting hole, the through holes are evenly distributed along the circumference of the turntable, and are connected to the pressure plate mounting hole;

[0006] The tensioning pressure plate comprises a thicker pressure plate neck and a thinner pressure plate tail, the pressure plate neck is connected to the pressure plate tail and is coaxial, the outer diameter of the pressure plate neck gradually increases in the direction away from the pressure plate tail, the tensioning pressure plate is coaxially passed through the pressure plate mounting hole of the rotating disk, a pressure plate spring is sandwiched between the end surface of the pressure plate tail and the first step, a screw hole is axially opened in the tensioning pressure plate, an operating screw is passed through the screw hole, the operating screw tail is threadedly connected to the screw mounting hole, and the pressure plate spring is sleeved on the periphery of the operating screw; and

[0007] At least two tensioning rods, each tensioning rod is passed through a corresponding through hole on the turntable, and two ends thereof are respectively in contact with the inner ring of the material belt disk and the neck of the pressure plate.

[0008] Furthermore, the pressure plate mounting hole includes a first hole section, a second hole section and a third hole section that are connected in sequence, the first hole section is connected to one side of the screw mounting hole, the hole diameter of the first hole section is smaller than that of the second hole section, and there is a second step between the first and second hole sections, the hole diameter of the second hole section is smaller than that of the third hole section, and there is a third step between the second and third hole sections, the tensioning pressure plate also includes a pressure plate head, the pressure plate neck is connected between the pressure plate head and the pressure plate tail, the pressure plate head is located in the third hole section and is stopped at the third step, the pressure plate neck is located in the second hole section, the pressure plate tail is located in the first hole section, and the through hole is connected to the second hole section.

[0009] Furthermore, the turntable is T-shaped, including a thicker turntable head and a thinner turntable tail, the screw mounting hole and the first hole section are located in the turntable tail, the second and third hole sections are located in the turntable head, the through hole is located in the turntable head, and the material tape reel is mounted on the turntable head.

[0010] Furthermore, a limiting flange protrudes outward from the outer side wall of the turntable, a fixing ring is provided on the outer periphery of the turntable, and the material reel is clamped between the limiting flange and the fixing ring.

[0011] Furthermore, the fixing ring is fixed to the turntable by screws.

[0012] Furthermore, the operating screw is a butterfly screw.

[0013] Furthermore, a pressure rod spring is provided on the outer sleeve of each tensioning pressure rod, a pressure rod spring piece is fixed on the tensioning pressure rod, and the pressure rod spring is clamped between the pressure rod spring piece and the inner side wall of the pressure plate mounting hole.

[0014] Furthermore, each tensioning pressure rod is in a "T" shape, including a thicker pressure rod head and a thinner pressure rod tail, the pressure rod spring is fixed on the pressure rod tail, and the pressure rod spring is sleeved on the outer periphery of the pressure rod tail.

[0015] Furthermore, a cotter pin is fixedly provided on the tail of each pressure rod, and the cotter pin is stopped at a side of the pressure rod spring away from the pressure rod spring.

[0016] Furthermore, a nut is sleeved on one end of the turntable close to the power output shaft, a shaft sleeve is sleeved on the outer periphery of the turntable, and a bearing is sandwiched between the turntable and the shaft sleeve.

[0017] Compared with the existing technology, the material tape reel tensioning mechanism of the utility model squeezes the tensioning pressure rod by moving the tensioning pressure plate, causing the tensioning pressure rod to move outward, thereby fixing the material tape reel, and driving the turntable to rotate through the driving unit, thereby driving the material tape reel to rotate, which can prevent the material tape from deviating. Its mechanism design is miniaturized and can save layout space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model.

[0020] Figure 2 yes Figure 1 A schematic front view of the illustrated embodiment.

[0021] Figure 3 It is along Figure 2 Schematic cross-sectional view of the FF line.

[0022] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part A.

[0023] Figure 5 yes Figure 1 Schematic diagram of the structure of the tensioning pressure plate, tensioning pressure rod and operating screw. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the embodiments of the present invention, all other embodiments obtained by those skilled in the art should fall within the scope of protection of the embodiments of the present invention.

[0025] See also Figures 1 to 5 , is a preferred embodiment of the present invention, the material tape reel tensioning mechanism includes a material tape reel 1, a drive unit 2, a turntable 3, a tensioning pressure plate 4 and at least two tensioning pressure rods 5.

[0026] The drive unit 2 is used to rotate the material reel 1 and has a power output shaft (not shown). In this embodiment, the drive unit 2 includes a servo motor 21 and a reducer 22. The shaft of the servo motor 21 is connected to the reducer 22, and the shaft of the reducer 22 serves as the power output shaft of the drive unit 2.

[0027] The turntable 3 is fixed to the power output shaft and can rotate with the power output shaft. The material belt disk 1 is mounted on the turntable 3 and can rotate with the turntable 3. The turntable 3 has an axially defined mounting hole, which includes a screw mounting hole 31 and a pressure plate mounting hole 32 that are interconnected. The diameter of the screw mounting hole 31 is smaller than the pressure plate mounting hole 32, and a first step 33 is defined between the screw mounting hole 31 and the pressure plate mounting hole 32. At least two through holes 34 are radially defined on the wall of the turntable 3 corresponding to the pressure plate mounting hole 32. The through holes 34 are evenly distributed along the circumference of the turntable 3 and are connected to the pressure plate mounting hole 32.

[0028] The tensioning plate 4 includes a relatively thick platen neck portion 41 and a relatively thin platen tail portion 42. The platen neck portion 41 and the platen tail portion 42 are coaxially connected, with the outer diameter of the platen neck portion 41 gradually increasing in the direction away from the platen tail portion 42. The tensioning plate 4 is coaxially inserted into the platen mounting hole 32 of the turntable 3. A platen spring 43 is sandwiched between the end surface of the platen tail portion 42 and the first step 33 to reset the tensioning plate 4 (details will be described later). A screw hole (not shown) is axially defined within the tensioning plate 4. An operating screw 44 is inserted into the screw hole. The tail of the operating screw 44 is threadedly connected to the screw mounting hole 31, and the platen spring 43 is sleeved around the outer periphery of the operating screw 44.

[0029] Each tensioning and pressing rod 5 is passed through a corresponding through hole 34 on the turntable 3 , and its two ends respectively abut against the inner ring of the material tape reel 1 and the neck 41 of the pressure plate.

[0030] When the above-described reel tensioning mechanism operates, the servo motor 21 drives the reducer 22, which in turn rotates the turntable 3, causing the reel 1 to rotate. When the operating screw 44 is tightened toward the power output shaft, the tensioning plate 4 moves toward the power output shaft. During this movement, the pressure plate spring 43 compresses and deforms, gradually increasing the outer diameter of the pressure plate neck 41. This causes the tensioning rod 5 to move outward (away from the axis), pressing against the inner ring of the reel 1. This tensioning action secures the reel 1 and prevents it from deviating during rotation. When the operating screw 44 is turned in the opposite direction, the tensioning plate 4, under the elastic restoring force of the pressure plate spring 43, moves away from the power output shaft, resetting it. To facilitate manual installation and removal, the operating screw 44 is preferably a butterfly screw.

[0031] To limit the axial position of the tape reel 1, a limiting flange 35 protrudes outward from the outer wall of the turntable 3. A fixing ring 6 is provided around the outer periphery of the turntable 3, with the tape reel 1 sandwiched between the limiting flange 35 and the fixing ring 6. The fixing ring 6 can be fastened to the turntable 3 with screws 61 to limit the outer position of the tape reel 1.

[0032] In this embodiment, the pressure plate mounting hole 32 includes a first hole section 321, a second hole section 322, and a third hole section 323 that are connected in sequence. The first hole section 321 is connected to one side of the screw mounting hole 31, and its aperture is smaller than that of the second hole section 322. A second step 36 is provided between the first and second hole sections 321 and 322. The aperture of the second hole section 322 is smaller than that of the third hole section 323, and a third step 37 is provided between the second and third hole sections 322 and 323. The tensioning pressure plate 4 also includes a pressure plate head 45, and a pressure plate neck 41 is connected between the pressure plate head 45 and the pressure plate tail 42. The pressure plate head 45 is located in the third hole section 323 and is blocked by the third step 37. The pressure plate neck 41 is located in the second hole section 322, and its outer diameter is larger than the inner diameter of the first hole section 321. The pressure plate tail 42 is located in the first hole section 321, and the through hole 34 is connected to the second hole section 322. The operating screw 44 is sequentially inserted into the pressure plate head 45 , the pressure plate neck 41 and the pressure plate tail 42 .

[0033] The turntable 3 is T-shaped, including a thicker turntable head 38 and a thinner turntable tail 39. The screw mounting hole 31 and the first hole section 321 are located in the turntable tail 39, the second and third hole sections 322 and 323 are located in the turntable head 38, the through hole 34 is located in the turntable head 38, and the material tape reel 1 is mounted on the turntable head 38.

[0034] In order to ensure that the material reel 1 has sufficient tension, in this embodiment, four tensioning rods 5 are provided on the turntable 3 , and the four tensioning rods 5 are evenly distributed along the circumference of the turntable 3 .

[0035] To ensure automatic reset of the tensioning rods 5, in this embodiment, each tensioning rod 5 is sheathed with a rod spring 51. A rod spring 52 is fixed to the tensioning rod 5. The rod spring 51 is sandwiched between the rod spring 52 and the inner wall of the platen mounting hole 32 on the turntable 3. When the tensioning plate 4 moves toward the power output shaft, the rod spring 52 moves outward along with the tensioning rod 5, compressing and deforming the rod spring 51. When the tensioning plate 4 moves away from the power output shaft, the tensioning rod 5 moves inward under the elastic restoring force of the rod spring 51, achieving reset.

[0036] In this embodiment, each tensioning rod 5 is T-shaped, comprising a thicker rod head 53 and a thinner rod tail 54. The rod head 53 abuts the inner ring of the material reel 1, while the rod tail 54 abuts the pressure plate neck 41. A rod spring 52 is fixed to the rod tail 54 near the end, and a rod spring 51 is sleeved around the rod tail 54. A cotter pin 55 is fixed to each rod tail 54. The cotter pin 55 stops on the side of the rod spring 52 away from the rod spring 51, thereby locking the rod spring 52.

[0037] In addition, a nut 7 is sleeved on one end of the turntable 3, near the power output shaft. A sleeve 8 is sleeved around the outer periphery of the turntable 3. Sleeve 8 is sandwiched between the nut 7 and the turntable head 38. A bearing 9 is sandwiched between the turntable 3 and sleeve 8. The combination of bearing 9 and sleeve 8 improves efficiency and reduces friction.

[0038] The tensioning mechanism of the material tape reel 1 of the present invention squeezes the tensioning pressure rod 5 by moving the tensioning pressure plate 4, causing the tensioning pressure rod 5 to move outward, thereby fixing the material tape reel 1, and driving the turntable 3 to rotate through the driving unit 2, thereby driving the material tape reel 1 to rotate, which can prevent the material tape from deviating. The mechanism design is miniaturized and can save layout space.

[0039] The above embodiments are only preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be regarded as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A tape reel tensioning mechanism, comprising a tape reel and a drive unit, wherein the drive unit has a power output shaft; characterized in that: The material tape reel tensioning mechanism further includes: A turntable is fixedly mounted on the power output shaft, the material belt disk is sleeved on the turntable, a mounting hole is axially opened in the turntable, the mounting hole includes a screw mounting hole and a pressure plate mounting hole that are interconnected, the hole diameter of the screw mounting hole is smaller than the pressure plate mounting hole, a first step is provided between the screw mounting hole and the pressure plate mounting hole, at least two through holes are radially opened on the hole wall of the turntable corresponding to the pressure plate mounting hole, the through holes are evenly distributed along the circumference of the turntable, and are connected to the pressure plate mounting hole; The tensioning pressure plate comprises a thicker pressure plate neck and a thinner pressure plate tail, the pressure plate neck is connected to the pressure plate tail and is coaxial, the outer diameter of the pressure plate neck gradually increases in the direction away from the pressure plate tail, the tensioning pressure plate is coaxially passed through the pressure plate mounting hole of the rotating disk, a pressure plate spring is sandwiched between the end surface of the pressure plate tail and the first step, a screw hole is axially opened in the tensioning pressure plate, an operating screw is passed through the screw hole, the operating screw tail is threadedly connected to the screw mounting hole, and the pressure plate spring is sleeved on the periphery of the operating screw; and At least two tensioning rods, each tensioning rod is passed through a corresponding through hole on the turntable, and two ends thereof are respectively in contact with the inner ring of the material belt disk and the neck of the pressure plate.

2. The tape reel tensioning mechanism according to claim 1, wherein: The pressure plate mounting hole includes a first hole section, a second hole section and a third hole section that are connected in sequence. The first hole section is connected to one side of the screw mounting hole, and its hole diameter is smaller than that of the second hole section. There is a second step between the first and second hole sections. The hole diameter of the second hole section is smaller than that of the third hole section. There is a third step between the second and third hole sections. The tensioning pressure plate also includes a pressure plate head. The pressure plate neck is connected between the pressure plate head and the pressure plate tail. The pressure plate head is located in the third hole section and is stopped at the third step. The pressure plate neck is located in the second hole section. The pressure plate tail is located in the first hole section. The through hole is connected to the second hole section.

3. The material tape reel tensioning mechanism as described in claim 2 is characterized in that the turntable is "T"-shaped, including a thicker turntable head and a thinner turntable tail, the screw mounting hole and the first hole section are located in the turntable tail, the second and third hole sections are located in the turntable head, the through hole is located in the turntable head, and the material tape reel is mounted on the turntable head.

4. The tape reel tensioning mechanism according to claim 1, wherein: The outer side wall of the turntable protrudes outward to form a limiting flange, a fixing ring is provided on the outer periphery of the turntable, and the material reel is clamped between the limiting flange and the fixing ring.

5. The tape reel tensioning mechanism according to claim 4, wherein: The fixing ring is fixed on the turntable by screws.

6. The tape reel tensioning mechanism according to claim 1, wherein: The operating screw is a butterfly screw.

7. The tape reel tensioning mechanism according to claim 1, wherein: A pressure rod spring is provided on the outer sleeve of each tensioning pressure rod. A pressure rod spring piece is fixed on the tensioning pressure rod. The pressure rod spring is clamped between the pressure rod spring piece and the inner side wall of the pressure plate mounting hole.

8. The tape reel tensioning mechanism according to claim 7, wherein: Each tensioning pressure rod is in a "T" shape, including a thicker pressure rod head and a thinner pressure rod tail. The pressure rod spring is fixed on the pressure rod tail, and the pressure rod spring is sleeved on the outer periphery of the pressure rod tail.

9. The tape reel tensioning mechanism according to claim 8, wherein: A split pin is fixed on the tail of each pressure rod, and the split pin is stopped at a side of the pressure rod spring away from the pressure rod spring.

10. The tape reel tensioning mechanism according to claim 1, wherein: A nut is sleeved on one end of the turntable close to the power output shaft, a shaft sleeve is sleeved on the outer periphery of the turntable, and a bearing is sandwiched between the turntable and the shaft sleeve.

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