Spline-free collar structure for uncoiling locking device

Abstract

The utility model relates to the field of paper processing, and discloses a spline-free collar structure for an uncoiling locking device, which comprises a base, a rotating shaft is rotatably connected to the front surface of the upper end of the base, a driving arm is meshed with a gear on the outer wall of the rotating shaft, and a pressing arm is arranged on the outer wall of the rotating shaft close to the front surface of the driving arm. An adjusting assembly is arranged between the pressing arm and the rotating shaft and comprises an inner lantern ring, the right side of the pressing arm is fixedly connected with an outer lantern ring, the outer lantern ring is rotationally connected to the rear portion of the outer wall of the inner lantern ring, and a positioning block is fixedly connected to the position, close to the front of the outer lantern ring, of the outer wall of the top end of the inner lantern ring. According to the paper pressing device, the limiting of the adjusting ring is relieved by rotating the positioning ring, at the moment, the material pressing arm can be rotated to enable the clamping block to slide out of the clamping groove, the included angle between the material pressing arm and the driving arm can be adjusted by rotating the material pressing arm, and therefore the paper pressing device can adapt to different paper production requirements by adjusting the material pressing arm, and the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper processing field especially, it is a keyless shaft ring structure for uncoiling locking device. BACKGROUND

[0002] In paper processing, printing and other related industrial fields, the uncoiling device is an important part of the production line, which mainly unwinds the paper roll to provide continuous paper supply for subsequent processing procedures such as printing, slitting, etc. In the uncoiling device, the pressing arm plays a crucial role in stabilizing the unwinding process of the paper roll.

[0003] In the traditional uncoiling device structure design, the pressing arm is usually installed on the rotating shaft, and the end of the pressing arm is in close contact with the surface of the paper shaft to effectively press the paper roll. At the same time, a driving arm is also installed on the rotating shaft, and the included angle between the driving arm and the pressing arm affects the pressing effect of the pressing arm on the paper roll. When the included angle is too large, the pressing arm will over-press the paper roll, causing damage to the paper. When the included angle is too small, the pressing arm cannot fully press the paper roll, causing the paper to slip and loosen during the unwinding process.

[0004] However, the existing pressing arm and rotating shaft are usually connected by a spline, which can ensure the stability of the connection to a certain extent. However, spline connection is a rigid connection method with fixed structure. During production, the type and thickness of paper often change, and the pressing angle of the pressing arm needs to be adjusted in time to meet different production requirements. However, the spline connection makes it difficult to adjust the included angle between the driving arm and the pressing arm, reducing flexibility. Therefore, a keyless shaft ring structure for uncoiling locking device is proposed to solve the above problems. SUMMARY

[0005] To make up for the above shortcomings, the utility model provides a keyless shaft ring structure for uncoiling locking device, which aims to improve the problem of "the existing connection between the pressing arm and the rotating shaft is spline connection, which is not convenient to adjust the included angle between the driving arm and the pressing arm" in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of keyless shaft ring structure for uncoiling lock fastening device, including base, the upper end front surface of the base is rotatably connected with rotating shaft, the outer wall gear of the rotating shaft is engaged with driving arm, the outer wall of the rotating shaft is provided with pressing arm in the front surface close to driving arm, adjusting assembly is arranged between the pressing arm and rotating shaft, the adjusting assembly includes inner sleeve ring, the right side of the pressing arm is fixedly connected with outer sleeve ring, the outer sleeve ring is rotatably connected in the outer wall rear portion of inner sleeve ring, the top outer wall of the inner sleeve ring is fixedly connected with positioning block in the front of outer sleeve ring, the outer wall of the inner sleeve ring is sleeved with adjusting ring, the rear surface of the adjusting ring is fixedly connected with clamping block and is provided with multiple groups.

[0007] As further description of the above technical solution:

[0008] The front surface of the adjusting ring is provided with reset component, and the reset component includes positioning rod, which is connected to the front surface of the positioning ring.

[0009] As further description of the above technical solution:

[0010] The front surface of the outer sleeve ring is provided with clamping groove and multiple groups, and the clamping block and the clamping groove are respectively arranged in the form of annular array with the center point of the adjusting ring and the outer sleeve ring as the symmetry axis, and the inner wall top of the adjusting ring is provided with positioning groove.

[0011] As further description of the above technical solution:

[0012] The front surface of the rotating shaft is threadedly connected with a second threaded rod in the middle, and the front surface of the second threaded rod is fixedly connected with a mounting sleeve.

[0013] As further description of the above technical solution:

[0014] The inner wall of the inner sleeve ring is provided with gear groove and is engaged with the outer wall gear of the rotating shaft, the outer wall of the mounting sleeve is rotatably connected with the positioning ring, and the upper part of the positioning ring is penetrated and threadedly connected with a first threaded rod.

[0015] As further description of the above technical solution:

[0016] The adjusting ring and the positioning ring are elastically connected by spring, the spring is sleeved on the outer wall of the positioning rod, one end of the spring is fixedly connected to the front surface of the adjusting ring, and the other end of the spring is fixedly connected to the rear surface of the positioning ring.

[0017] As further description of the above technical solution:

[0018] The clamping block is clamped in the inner wall of the clamping groove, the positioning groove slides on the top outer wall of the positioning block, and the rear part of the outer wall of the rotating shaft is provided with gear shape.

[0019] As a further description of the above technical solution:

[0020] The threaded rod abuts against the front surface of the adjusting ring, and the mounting sleeve is fitted onto the front of the rotating shaft near the gear-shaped front.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the limiting position of the adjusting ring is released by rotating the positioning ring. At this time, the pressing arm can be rotated to make the card block slide out of the card slot. Then, the angle between the pressing arm and the driving arm can be adjusted by rotating the pressing arm. Thus, the pressing arm can be adjusted to meet the needs of different paper production, thereby improving production efficiency and product quality.

[0023] 2. In this utility model, by setting a positioning rod and a spring, when adjusting the pressure arm to adapt to different paper production needs, rotating the pressure arm squeezes the locking block and then squeezes the spring. After adjustment, the spring, in conjunction with the positioning rod, allows the adjusting ring and the locking block to quickly reset and lock into the slot. This, in conjunction with rotating the threaded rod, quickly limits the adjusting ring, allowing the locking block to quickly lock into the slot, thereby quickly limiting the pressure arm. This improves the convenience and efficiency of adjustment, reduces the time spent on adjustment, and thus improves production efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a three-dimensional cross-sectional view of the adjusting ring, positioning ring, mounting sleeve, and threaded rod II in this utility model.

[0026] Figure 3 This is a three-dimensional structural breakdown diagram of the mounting sleeve, positioning ring, adjusting ring, inner ring, and rotating shaft in this utility model.

[0027] Figure 4 This is a three-dimensional structural disassembly diagram of the adjusting ring and inner ring in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the adjusting ring and the locking block in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Drive arm; 3. Pressure arm; 4. Rotary shaft; 5. Positioning rod; 31. Outer ring; 32. Positioning ring; 33. Threaded rod one; 34. Mounting sleeve; 35. Adjusting ring; 36. Positioning block; 37. Inner ring; 38. Threaded rod two; 39. Locking block; 310. Positioning groove; 311. Locking groove; 51. Spring. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a spline-free collar structure for an unwinding locking device, comprising a base 1 supporting a rotating shaft 4, a rotating shaft 4 rotatably connected to the upper front surface of the base 1 to support a pressure arm 3 and a drive arm 2, a drive arm 2 meshing with a gear on the outer wall of the rotating shaft 4, which is connected to a hydraulic rod to drive the rotating shaft 4 to rotate, the drive arm 2 serving as an intermediate link for power transmission, one end of which is connected to an external power source, such as a motor, which drives the drive arm 2 to rotate via the hydraulic rod, the outer wall of the rotating shaft 4 near the front surface of the drive arm 2 is provided with a pressure arm 3, the end of which is pressed against the surface of the paper shaft, mainly used to apply pressure to the paper roll to prevent the paper from becoming loose or shifting during the unwinding process, an adjustment component is provided between the pressure arm 3 and the rotating shaft 4 to adjust the angle between the pressure arm 3 and the drive arm 2.

[0033] Furthermore, the adjustment assembly includes an inner ring 37 that can cooperate with the adjustment ring 35, the locking block 39, and the locking groove 311 to drive the pressure arm 3 to rotate. An outer ring 31 that drives the pressure arm 3 to rotate is fixedly connected to the right side of the pressure arm 3. The outer ring 31 is rotatably connected to the rear part of the outer wall of the inner ring 37. A positioning block 36 is fixedly connected to the top outer wall of the inner ring 37 near the front of the outer ring 31. The positioning block 36 drives the adjustment ring 35 to rotate synchronously to provide support. The outer wall of the inner ring 37 is fitted with an adjustment ring 35 that supports multiple sets of locking blocks 39. The rear surface of the adjustment ring 35 is fixedly connected with locking blocks 39, and multiple sets are provided. The locking blocks 39 are triangular in shape and cooperate with the locking groove 311, which is also triangular in shape, to adjust the angle between the pressure arm 3 and the drive arm 2.

[0034] Reference Figure 2 , Figure 3 and Figure 4 The front surface of the adjusting ring 35 is provided with a reset assembly, which includes a positioning rod 5 that provides support and improves the stability of the movement of the adjusting ring 35. The positioning rod 5 passes through and is slidably connected to the front surface of the positioning ring 32.

[0035] Reference Figure 3 , Figure 4 and Figure 5The front surface of the outer sleeve ring 31 is provided with a plurality of clamping grooves 311 matched with clamping blocks 39 to drive the outer sleeve ring 31 to rotate synchronously, and is provided with a plurality of groups of clamping blocks 39 and clamping grooves 311 arranged in an annular array with the center point of the adjusting ring 35 and the outer sleeve ring 31 as the symmetrical axis, and the plurality of groups of clamping blocks 39 and clamping grooves 311 correspond to each other. The inner wall top end of the adjusting ring 35 is provided with a positioning groove 310 to provide a space for the movement of the positioning block 36 and drive the adjusting ring 35 to rotate.

[0036] Further, the front surface of the rotating shaft 4 is threadedly connected with a second threaded rod 38 for mounting the mounting sleeve 34 on the front surface of the rotating shaft 4 to cooperate with the first threaded rod 33 to limit the adjusting ring 35 and the inner sleeve ring 37. The front surface of the second threaded rod 38 is fixedly connected with the mounting sleeve 34 for limiting the inner sleeve ring 37 at the gear-shaped position of the outer wall of the rotating shaft 4. The inner wall of the inner sleeve ring 37 is arranged in a gear groove shape to mesh with the gear-shaped position of the outer wall of the rotating shaft 4, so that the rotating shaft 4 can drive the inner sleeve ring 37 to rotate synchronously. The outer wall of the mounting sleeve 34 is rotatably connected with a positioning ring 32 matched with the first threaded rod 33 to limit the adjusting ring 35. The upper part of the positioning ring 32 penetrates and is threadedly connected with the first threaded rod 33 to limit the adjusting ring 35 and prevent it from moving in the forward surface direction.

[0037] Referring to Figure 2 , Figure 3 and Figure 4 , the adjusting ring 35 and the positioning ring 32 are elastically connected by a spring 51. The spring 51 is sleeved on the outer wall of the positioning rod 5, one end of the spring 51 is fixedly connected to the front surface of the adjusting ring 35, and the other end of the spring 51 is fixedly connected to the rear surface of the positioning ring 32. By rotating the first threaded rod 33 to release the limitation of the adjusting ring 35, at this time, rotating the pressing arm 3 can drive the clamping groove 311 to rotate and extrude the clamping block 39, so that the clamping block 39 slides out of the clamping groove 311, and at the same time, the adjusting ring 35 moves in the forward surface direction, driving the positioning rod 5 to penetrate and slide on the front surface of the positioning ring 32 to extrude the spring 51. By rotating the pressing arm 3, the included angle between the pressing arm 3 and the driving arm 2 can be adjusted, so that the pressing angle of the pressing arm 3 can be adjusted in time according to the parameters such as the type and thickness of the paper to adapt to different production requirements. After the adjustment is completed, the spring 51 can be quickly reset by the reverse force of being extruded to drive the clamping block 39 to slide into the corresponding clamping groove 311. At this time, the first threaded rod 33 can be directly rotated to contact the adjusting ring 35 to limit it. The operation is convenient, and the quick reset reduces downtime and improves production efficiency.

[0038] Referring to Figure 2 , Figure 3 and Figure 4, the inner wall of the clamping groove 311 is clamped in the card block 39, the positioning groove 310 slides on the top outer wall of the positioning block 36, the outer wall of the rear part of the rotating shaft 4 is provided as a gear, and the gear is engaged with the driving arm 2 and the inner sleeve ring 37, so that the rotating shaft 4 can be driven to rotate by the driving arm 2 to drive the inner sleeve ring 37 and the pressing arm 3 to rotate. The threaded rod one 33 abuts against the front surface of the adjusting ring 35, and the threaded rod one 33 abuts against the front surface of the adjusting ring 35, so that the adjusting ring 35 can be pressed and limited, and the mounting sleeve 34 is sleeved on the front part of the rotating shaft 4 close to the front of the gear.

[0039] Working principle: in use, when the unwinding device is running, the driving arm 2 is driven to rotate by an external power source. Since the driving arm 2 is engaged with the gear at the outer wall of the rotating shaft 4, the power is transmitted to make the rotating shaft 4 rotate around its axis. At the same time, the gear-shaped structure at the outer wall of the rear part of the rotating shaft 4 is engaged with the gear groove in the inner wall of the inner sleeve ring 37, thereby driving the inner sleeve ring 37 to rotate synchronously. The inner sleeve ring 37 guides the adjusting ring 35 and the clamping block 39 to rotate through the cooperation of the positioning block 36 at the top end of the outer wall of the inner sleeve ring 37 and the positioning groove 310 on the front surface of the adjusting ring 35. The clamping block 39 is clamped in the clamping groove 311 and is limited to drive the outer sleeve ring 31 and the pressing arm 3 fixedly connected thereto to rotate. The end of the pressing arm 3 applies pressure to the surface of the paper shaft to prevent the paper from loosening and shifting, ensuring that the unwinding process is stable.

[0040] When it is necessary to adjust the included angle between the pressing arm 3 and the driving arm 2 to adapt to different paper parameters, first rotate the threaded rod one 33 connected with the positioning ring 32 in screw connection, so that it moves outward to remove the restriction on the forward movement of the adjusting ring 35. Then rotate the pressing arm 3, which drives the outer sleeve ring 31 to rotate. The clamping groove 311 on the front surface of the outer sleeve ring 31 extrudes the clamping block 39. The clamping block 39 is triangular and tightly cooperates with the also triangular clamping groove 311, forcing the clamping block 39 to slide out of the clamping groove 311. In this process, the adjusting ring 35 moves in the forward surface direction with the clamping block 39 under stress, and at the same time drives the positioning rod 5 to penetrate and slide on the front surface of the positioning ring 32 and extrudes the spring 51. At this time, the pressing arm 3 is no longer angle-limited and can rotate freely, thereby realizing the adjustment of the included angle with the driving arm 2.

[0041] After the angle adjustment is completed, since the spring 51 is in a compressed state, the reverse force generated thereby promotes the quick return of the adjusting ring 35 to the rear, drives the clamping block 39 to slide into the corresponding clamping groove 311, re-locks the pressing arm 3, and finally rotates the threaded rod one 33 again to make it abut against the front surface of the adjusting ring 35, firmly limits the adjusting ring 35, and ensures that the angle of the pressing arm 3 is stable and unchangeable in the subsequent unwinding process. The whole process is convenient to operate, the downtime is effectively reduced by the quick return function of the spring 51, the production efficiency is greatly improved, different requirements of the pressing angle of the pressing arm 3 caused by the changes of the paper type, thickness and other parameters can be flexibly coped with, and the high-efficiency and stable operation of the unwinding device is ensured.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A spline-free collar structure for an unwinding locking device, comprising a base (1), characterized in that: A rotating shaft (4) is rotatably connected to the upper front surface of the base (1). A drive arm (2) is meshed with a gear on the outer wall of the rotating shaft (4). A pressing arm (3) is provided on the outer wall of the rotating shaft (4) near the front surface of the drive arm (2). An adjustment component is provided between the pressing arm (3) and the rotating shaft (4). The adjustment component includes an inner ring (37). An outer ring (31) is fixedly connected to the right side of the pressing arm (3). The outer ring (31) is rotatably connected to the rear part of the outer wall of the inner ring (37). A positioning block (36) is fixedly connected to the top outer wall of the inner ring (37) near the front of the outer ring (31). An adjustment ring (35) is sleeved on the outer wall of the inner ring (37). A locking block (39) is fixedly connected to the rear surface of the adjustment ring (35), and multiple sets of them are provided.

2. The spline-free collar structure for an unwinding locking device according to claim 1, characterized in that: The front surface of the adjusting ring (35) is provided with a reset component, which includes a positioning rod (5) that passes through and is slidably connected to the front surface of the positioning ring (32).

3. A spline-free collar structure for an unwinding locking device according to claim 1, characterized in that: The front surface of the outer ring (31) is provided with a slot (311) and multiple sets of slots are provided. The multiple sets of slots (39) and slots (311) are arranged in a circular array with the center point of the adjusting ring (35) and the outer ring (31) as the axis of symmetry. The top of the inner wall of the adjusting ring (35) is provided with a positioning groove (310).

4. A spline-free collar structure for an unwinding locking device according to claim 3, characterized in that: The front surface of the rotating shaft (4) is threaded with a threaded rod (38) in the middle, and the front surface of the threaded rod (38) is fixedly connected with an installation sleeve (34).

5. A spline-free collar structure for an unwinding locking device according to claim 4, characterized in that: The inner wall of the inner sleeve (37) is configured to be gear groove shaped and meshes with the gear on the outer wall of the rotating shaft (4). The outer wall of the mounting sleeve (34) is rotatably connected to a positioning ring (32). The upper part of the positioning ring (32) is threadedly connected to a threaded rod (33).

6. A spline-free collar structure for an unwinding locking device according to claim 5, characterized in that: The adjusting ring (35) and the positioning ring (32) are elastically connected by a spring (51). The spring (51) is sleeved on the outer wall of the positioning rod (5). One end of the spring (51) is fixedly connected to the front surface of the adjusting ring (35), and the other end of the spring (51) is fixedly connected to the rear surface of the positioning ring (32).

7. A spline-free collar structure for an unwinding locking device according to claim 5, characterized in that: The card block (39) is engaged with the inner wall of the card slot (311), the positioning groove (310) slides on the top outer wall of the positioning block (36), and the rear part of the outer wall of the rotating shaft (4) is gear-shaped.

8. A spline-free collar structure for an unwinding locking device according to claim 7, characterized in that: The threaded rod (33) abuts against the front surface of the adjusting ring (35), and the mounting sleeve (34) is fitted onto the front of the rotating shaft (4) near the gear-shaped front.

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