Material belt guiding mechanism for rewinding machine

Abstract

The utility model discloses a material belt guiding mechanism for a rewinding machine, which is characterized in that a mandrel is inserted in a bearing, an outer ring is sleeved on the outer side of the bearing, the mandrel and a supporting unit are fixedly arranged together, more than one mandrel limiting notch is respectively arranged on two sides of the mandrel, mandrel limiting screw holes are arranged at the positions of the mandrel limiting notches, and the mandrel limiting screw holes are matched with the mandrel limiting screw holes. A mandrel limiting screw is installed in the mandrel limiting screw hole, a nut of the mandrel limiting screw is partially exposed out of the outer side of the mandrel limiting notch and presses the bearing, the two sides of the outer ring are each provided with one or more outer ring limiting notches, and the outer ring limiting notches are provided with outer ring limiting screw holes. An outer ring limiting screw is installed in the outer ring limiting screw hole, and a nut of the outer ring limiting screw is partially exposed out of the outer side of the outer ring limiting notch and presses the bearing. According to the utility model, not only can the bearing be ensured to be positioned between the mandrel and the outer ring during installation, but also the bearing can be ensured to be always kept at the middle position between the mandrel and the outer ring during use, and the deviation phenomenon is avoided.

Description

Technical Field

[0001] This utility model discloses a rewinding machine, and more particularly a material guide mechanism for a rewinding machine, belonging to the field of packaging equipment technology. Background Technology

[0002] A rewinder is a device used for rewinding and slitting materials such as paper, mica tape, and film, and is widely used in industrial production. The main working principle of a rewinder is to unwind pre-formed rolls of material, which are often wide and have a large diameter, through the unwinding device. After tension control and deviation correction, the rolls are then rewound by the rewinding device into finished rolls that meet the required specifications. During this process, the material can also be slit as needed to obtain products of different widths.

[0003] Existing rewinding machines typically incorporate a guiding mechanism to guide the strip, resulting in a tighter and more aesthetically pleasing winding. This guiding mechanism usually comprises a mandrel, an outer ring, a bearing, and a support unit. The mandrel is inserted inside the bearing, and the outer ring is fitted onto the outside of the bearing. See the prior Chinese patent, CN 219259007 U, for details. Because the material and width of the strip used for rewinding vary, the required widths of the mandrel and outer ring also differ. Bearings, however, are usually standard parts with specific widths. This poses a challenge for assembly, making it difficult to install the bearing precisely in the center of the mandrel and outer ring. Even if the bearing is initially centered, misalignment is inevitable during use. Misalignment not only affects stability during operation but also shortens the bearing's lifespan and can easily lead to damage. Summary of the Invention

[0004] In view of the aforementioned drawback of the bearing installation in the guide mechanism of the rewinding machine in the prior art, which is prone to misalignment, this utility model provides a material guide mechanism for a rewinding machine, which is provided with bearing limiting screws on the mandrel and the outer ring respectively, to limit the installation of the bearing and keep the bearing in the middle position between the mandrel and the outer ring during use.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a material guide mechanism for a rewinding machine, the guide mechanism including a mandrel, a bearing, an outer ring and a support unit. The mandrel is inserted into the bearing, the outer ring is fitted on the outside of the bearing, the mandrel and the support unit are fixedly installed together, one or more mandrel limiting notches are opened on both sides of the mandrel, and mandrel limiting screw holes are opened at the mandrel limiting notches. A mandrel limiting screw is installed in the mandrel limiting screw hole, and the nut of the mandrel limiting screw is partially exposed outside the mandrel limiting notch and presses against the bearing. One or more outer ring limiting notches are opened on both sides of the outer ring, and outer ring limiting screw holes are opened at the outer ring limiting notches. An outer ring limiting screw is installed in the outer ring limiting screw hole, and the nut of the outer ring limiting screw is partially exposed outside the outer ring limiting notch and presses against the bearing.

[0006] The technical solution adopted by this utility model to solve its technical problem further includes:

[0007] The mandrel has a mandrel screw hole, and a mandrel mounting screw is installed in the mandrel screw hole. The mandrel and the support unit are installed together by the mandrel mounting screw.

[0008] The mandrel screw holes are provided in a ring shape.

[0009] The mandrel limiting notch is provided on two sides of the mandrel. The mandrel limiting notch adopts an arc-shaped structure. The opening depth of the mandrel limiting notch is greater than the nut thickness of the mandrel limiting screw, and less than or equal to 1 / 2 of the mandrel thickness.

[0010] The nut of the aforementioned mandrel limiting screw has a cylindrical structure.

[0011] The thickness of the outer ring is less than or equal to the thickness of the mandrel.

[0012] The outer ring limiting notch has three notches on each side of the outer ring. The outer ring limiting notch adopts an arc-shaped structure. The opening depth of the outer ring limiting notch is greater than the nut thickness of the outer ring limiting screw, and less than or equal to 1 / 2 of the outer ring thickness.

[0013] The nut of the outer ring limiting screw has a cylindrical structure.

[0014] The support unit includes an adapter plate and a support arm. There are two adapter plates, which are symmetrically arranged and installed on both sides of the mandrel. The adapter plates have mandrel mounting holes at the positions corresponding to the mandrel screw holes on the mandrel. The mandrel mounting screws pass through the mandrel mounting holes and are inserted into the mandrel screw holes. The support arm is installed between the two adapter plates. The adapter plates have support arm mounting holes. One end of the support arm has a fixing screw hole at the corresponding position. The support arm mounting screw passes through the support arm mounting hole and is installed into the fixing screw hole. The other end of the support arm has an oblong hole.

[0015] The mandrel mounting holes are provided at the locations of all mandrel screw holes on the mandrel.

[0016] The beneficial effects of this utility model are: bearing limiting screws are respectively provided on the mandrel and the outer ring to limit the installation of the bearing. This not only ensures that the bearing is located in the middle position between the mandrel and the outer ring during installation, but also ensures that the bearing is always in the middle position between the mandrel and the outer ring during use, without any deviation, thus maintaining operational stability and ensuring service life.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the exploded state structure of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the rotation guide unit in this utility model.

[0021] Figure 4 This is a schematic diagram of the exploded state structure of the rotation guide unit in this utility model.

[0022] In the diagram, 1-mandrel, 11-mandrel screw hole, 12-mandrel limiting notch, 13-mandrel mounting screw, 14-mandrel limiting screw, 15-mandrel limiting screw hole, 2-bearing, 3-outer ring, 31-outer ring limiting notch, 32-outer ring limiting screw, 33-outer ring limiting screw hole, 4-adapter plate, 41-mandrel mounting hole, 42-support arm mounting hole, 43-support arm mounting screw, 5-support arm, 51-fixing screw hole, 52-slender hole. Detailed Implementation

[0023] This embodiment is a preferred embodiment of the present invention. All other embodiments that are the same as or similar to this embodiment in principle and basic structure are within the protection scope of the present invention.

[0024] Please refer to the appendix for details. Figure 1 To be continued Figure 4This utility model mainly protects a material belt guiding mechanism for a rewinding machine, which is installed on the rewinding machine to guide the material belt. This utility model mainly includes a mandrel 1, a bearing 2, an outer ring 3, and a support unit. The mandrel 1 is inserted into the bearing 2, and the outer ring 3 is fitted onto the outside of the bearing 2. The mandrel 1 and the support unit are fixedly installed together. One or more mandrel limiting notches 12 are opened on both sides of the mandrel 1. A mandrel limiting screw hole 15 is opened at the position of the mandrel limiting notch 12. A mandrel limiting screw 14 is installed in the mandrel limiting screw hole 15. The nut of the mandrel limiting screw 14 is partially exposed outside the mandrel limiting notch 12 and presses against the bearing 2 to limit its movement. One or more outer ring limiting notches 31 are opened on both sides of the outer ring 3. An outer ring limiting screw hole 33 is opened at the position of the outer ring limiting notch 31. An outer ring limiting screw 32 is installed in the outer ring limiting screw hole 33. The nut of the outer ring limiting screw 32 is partially exposed outside the outer ring limiting notch 31 and presses against the bearing 2 to limit its movement.

[0025] In this embodiment, the mandrel 1 is provided with mandrel screw holes 11, and mandrel mounting screws 13 are installed in the mandrel screw holes 11. The mandrel 1 is installed together with the support unit by the mandrel mounting screws 13. There are four mandrel screw holes 11, which are arranged in a ring. In specific implementation, the number of mandrel screw holes 11 can also be opened according to actual needs. Preferably, the number of mandrel screw holes 11 is an even number.

[0026] In this embodiment, two mandrel limiting notches 12 are provided on each side of the mandrel 1, respectively limiting the bearing 2 on both sides. In specific implementation, the number of mandrel limiting notches 12 on each side of the mandrel 1 can be set according to actual needs. In this embodiment, the mandrel limiting notches 12 preferably adopt an arc-shaped structure. The opening depth (or length) of the mandrel limiting notch 12 is preferably greater than the nut thickness of the mandrel limiting screw 14, so that the nut of the mandrel limiting screw 14 is completely located within the mandrel limiting notch 12 during use. In specific implementation, it can also be less than the nut thickness of the mandrel limiting screw 14. During use, the support unit may directly contact the nut of the mandrel limiting screw 14, which can also achieve fixed installation, but the stability is slightly worse. The opening depth (or length) of the mandrel limiting notch 12 is also preferably less than or equal to 1 / 2 of the thickness of the mandrel 1. If the opening depth of the mandrel limiting notch 12 is greater than 1 / 2 of the thickness of the mandrel 1, the excess part does not have much practical significance.

[0027] The nut of the spindle limiting screw 14 is preferably cylindrical to facilitate the limiting operation. In practice, a hexagonal or quadrilateral nut can also be used.

[0028] In this embodiment, the thickness of the outer ring 3 is preferably less than or equal to the thickness of the mandrel 1. When the mandrel 1 and the support unit are fixedly installed together, the support unit will not interfere with the movement of the outer ring 3. In specific implementation, the thickness of the outer ring 3 can also be designed to be greater than the thickness of the mandrel 1. During installation, a raised structure needs to be designed between the mandrel 1 and the support unit to prevent the support unit from interfering with the movement of the outer ring 3.

[0029] In this embodiment, three outer ring limiting notches 31 are provided on each side of the outer ring 3, respectively limiting the bearing 2 on both sides. In specific implementation, the number of outer ring limiting notches 31 on each side of the outer ring 3 can be set according to actual needs. In this embodiment, the outer ring limiting notches 31 preferably adopt an arc-shaped structure. The opening depth (or length) of the outer ring limiting notches 31 is preferably greater than the nut thickness of the outer ring limiting screw 32, so that the nut of the outer ring limiting screw is completely located within the outer ring limiting notch 31 during use. In specific implementation, it can also be less than the nut thickness of the outer ring limiting screw 32, but it must be ensured that the exposed part of the outer ring limiting screw 32 will not interfere with the movement of the support unit. The opening depth (or length) of the outer ring limiting notches 31 is also preferably less than or equal to 1 / 2 of the thickness of the outer ring 3. If the opening depth of the outer ring limiting notches 31 is greater than 1 / 2 of the thickness of the outer ring 3, the excess part does not have much practical significance.

[0030] The nut of the outer ring limiting screw 32 is preferably cylindrical to facilitate the limiting operation. In specific implementation, a hexagonal or quadrilateral nut can also be used.

[0031] In this embodiment, the support unit includes an adapter plate 4 and a support arm 5. Two adapter plates 4 are provided, symmetrically arranged and respectively installed on both sides of the mandrel 1. Mandrel mounting holes 41 are provided on the adapter plate 4 at positions corresponding to the mandrel screw holes 11 on the mandrel 1. Mandrel mounting screws 13 pass through the mandrel mounting holes 41 and are inserted into the mandrel screw holes 11, thus fixing the adapter plate 4 to the mandrel 1. In this embodiment, the mandrel mounting holes 41 are provided at all positions corresponding to the mandrel screw holes 11 on the mandrel 1. Only half of the mandrel mounting holes 41 are used on each side. This design allows the adapter plates 4 on both sides to be universal, eliminating the need for differentiation during assembly and increasing ease of use and production efficiency. A support arm 5 is installed between the two adapter plates 4. The present invention can be installed on the rewinding machine through the support arm 5. The adapter plate 4 has a support arm mounting hole 42. A fixing screw hole 51 is opened at the corresponding position of one end of the support arm 5. The support arm mounting screw 43 passes through the support arm mounting hole 42 and is installed in the fixing screw hole 51. The adapter plate 4 and the support arm 5 are fixedly installed together by the support arm mounting screw 43. The other end of the support arm 5 has a waist-shaped hole 52. In this embodiment, there are two waist-shaped holes 52. In specific implementation, the number of waist-shaped holes 52 can also be selected as other numbers.

[0032] During assembly, the mandrel 1 is inserted into the bearing 2, and the mandrel limiting screw 14 is installed in the mandrel limiting screw hole 15 to limit the position of the bearing 2, ensuring that the bearing 2 is located in the middle position of the mandrel 1. The outer ring 3 is fitted onto the outside of the bearing 2, and the outer ring limiting screw 32 is installed in the outer ring limiting screw hole 33 to limit the position of the bearing 2, ensuring that the bearing 2 is located in the middle position of the outer ring 3. The adapter plates 4 on both sides are fixedly installed on the mandrel 1 by the mandrel mounting screw 13, and the adapter plate 4 and the support arm 5 are fixedly installed together by the support arm mounting screw 43.

[0033] This invention features bearing limiting screws on both the mandrel and the outer ring to limit the bearing installation. This not only ensures that the bearing is positioned in the middle between the mandrel and the outer ring during installation, but also ensures that the bearing remains in the middle position during use, preventing misalignment, maintaining operational stability, and guaranteeing service life.

Claims

1. A material guide mechanism for a rewinding machine, characterized in that: The guiding mechanism includes a spindle (1), a bearing (2), an outer ring (3), and a support unit. The spindle (1) is inserted into the bearing (2), and the outer ring (3) is fitted onto the outside of the bearing (2). The spindle (1) and the support unit are fixedly installed together. One or more spindle limiting notches (12) are opened on each side of the spindle (1). A spindle limiting screw hole (15) is opened at the position of the spindle limiting notch (12), and a spindle limiting screw (14) is installed in the spindle limiting screw hole (15). The nut of the spindle limiting screw (14) is partially exposed outside the spindle limiting notch (12) and presses against the bearing (2). There is one or more outer ring limiting notches (31) on both sides of the outer ring (3). An outer ring limiting screw hole (33) is provided at the position of the outer ring limiting notch (31). An outer ring limiting screw (32) is installed in the outer ring limiting screw hole (33). The nut of the outer ring limiting screw (32) is partially exposed outside the outer ring limiting notch (31) and presses against the bearing (2).

2. The material guide mechanism for the rewinder according to claim 1, characterized in that: The spindle (1) is provided with a spindle screw hole (11), and a spindle mounting screw (13) is installed in the spindle screw hole (11). The spindle (1) is installed together with the support unit by the spindle mounting screw (13).

3. The material guide mechanism for the rewinder according to claim 2, characterized in that: The mandrel screw holes (11) are provided in four places, and the four mandrel screw holes (11) are arranged in a ring.

4. The material guide mechanism for the rewinder according to claim 1, characterized in that: The mandrel limiting notch (12) is provided on two sides of the mandrel (1). The mandrel limiting notch (12) adopts an arc-shaped structure. The opening depth of the mandrel limiting notch (12) is greater than the nut thickness of the mandrel limiting screw (14) and less than or equal to 1 / 2 of the thickness of the mandrel (1).

5. The material guide mechanism for a rewinder according to claim 1, characterized in that: The nut of the spindle limiting screw (14) has a cylindrical structure.

6. The material guide mechanism for a rewinder according to claim 1, characterized in that: The thickness of the outer ring (3) is less than or equal to the thickness of the mandrel (1).

7. The material guide mechanism for a rewinder according to claim 1, characterized in that: The outer ring limiting notch (31) has three openings on each side of the outer ring (3). The outer ring limiting notch (31) adopts an arc-shaped structure. The opening depth of the outer ring limiting notch (31) is greater than the nut thickness of the outer ring limiting screw (32), and less than or equal to 1 / 2 of the thickness of the outer ring (3).

8. The material guide mechanism for a rewinder according to claim 1, characterized in that: The nut of the outer ring limiting screw (32) has a cylindrical structure.

9. The material guide mechanism for a rewinder according to claim 1, characterized in that: The support unit includes a transition plate (4) and a support arm (5). There are two transition plates (4), which are symmetrically arranged and installed on both sides of the spindle (1). The transition plate (4) has a spindle mounting hole (41) at the position corresponding to the spindle screw hole (11) on the spindle (1). The spindle mounting screw (13) passes through the spindle mounting hole (41) and is inserted into the spindle screw hole (11). The support arm (5) is installed between the two transition plates (4). The transition plate (4) has a support arm mounting hole (42). The support arm (5) has a fixing screw hole (51) at the corresponding position at one end. The support arm mounting screw (43) passes through the support arm mounting hole (42) and is installed in the fixing screw hole (51). The other end of the support arm (5) has a waist-shaped hole (52).

10. The rewinder tape guiding mechanism according to claim 9, characterized in that: The mandrel mounting hole (41) is provided at the positions of all mandrel screw holes (11) on the mandrel (1).

Images