CORE head assembly capable of preventing bolt from falling off

Abstract

The utility model relates to the technical field of CORE head assemblies, in particular to a CORE head assembly capable of preventing bolts from falling off, which comprises a central shaft, internal threaded holes are formed in the front end and the rear end of the right side of the central shaft, connecting bolts are in threaded connection with the inner sides of the internal threaded holes, and a fixed stop block is fixedly mounted on the right side of the central shaft through the connecting bolts. A CORE head body is arranged at the right end of the outer surface of the center shaft, a key groove is formed in the top of the right end of the center shaft, and a fixing key is arranged between the inner side of the key groove and the inner wall of the CORE head body. Through the arrangement of the sponge block and the PS plate, the CORE head assembly has the advantages that the falling of the bolt and the falling of the fixed stop block are improved, the loss of the fixed stop block and the fixed pin and the damage of the central shaft are thoroughly avoided, and the problems that the bolt is loosened and falls due to the rotation of the CORE head, the fixed stop block falls after the bolt falls, and the service life of the CORE head assembly is prolonged are solved. And then the problem that the center shaft is damaged due to slow loosening of the fixing pin is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of CORE head components, and specifically relates to a CORE head component for preventing bolt from falling off. Background Technique

[0002] At present, during the use of the winding core on the plywood CORE head, the CORE head rotates. However, the fixed design of the CORE head is unreasonable. Due to the rotation, the CORE head vibrates, and during the use, the fixing bolts become loose and fall off, and the fixing block falls off. Replacing various tightening bolts and spring washers has no effect. After the fixing block falls off, the fixing pin will become loose and fall off externally. Finally, during the process of external loosening, due to the change of force, the central shaft of the CORE head will be damaged. At the same time, after the fixing pin falls off, it is difficult to find that the CORE head and the central shaft rotate by friction, which will damage the CORE head and the shaft core. Moreover, when the winding core on the CORE head rotates, after the fixing block and the fixing pin fall off, they will move and be lost with the winding core, and seriously damage the central shaft of the CORE head. And when the central shaft is damaged, it needs to be shut down for replacement, and the central shaft needs to be replaced, resulting in the equipment being unable to produce. For this reason, we propose a CORE head component for preventing bolt from falling off. Content of the Utility Model

[0003] The purpose of the utility model is to provide a CORE head component for preventing bolt from falling off, which has the advantages of improving the falling of bolts and fixing blocks, and completely avoiding the loss of fixing blocks and fixing pins and the damage of the central shaft. It solves the problems that the rotation of the CORE head will cause the bolts to become loose and fall off, the fixing block will fall off after the bolts fall off, and then the fixing pin will slowly become loose and damage the central shaft.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A CORE head component for preventing bolt from falling off, including a central shaft. Inner threaded holes are opened at both the front and rear ends on the right side of the central shaft. Connecting bolts are threadedly connected inside the inner threaded holes. A fixing block is fixedly installed on the right side of the central shaft through the connecting bolts. A CORE head body is arranged on the outer surface of the right end of the central shaft. A keyway is opened at the top of the right end of the central shaft. A fixing key is arranged between the inner side of the keyway and the inner wall of the CORE head body. A PS board adapted to the inner cavity of the CORE head body is arranged on the right side of the fixing block. A sponge block with a diameter larger than the aperture of the CORE head body is bonded on the right side of the PS board.

[0005] Preferably, the sponge block is a high-density rigid sponge.

[0006] Preferably, the PS board is circular, and the PS board slides in the inner cavity of the CORE head body.

[0007] Preferably, a guiding groove corresponding to the keyway is arranged on the inner wall of the CORE head body.

[0008] Preferably, a first shock isolation rubber pad and a second shock isolation rubber pad that fit the central axis are embedded at the left end of the inner cavity of the CORE head body.

[0009] Preferably, a first protective layer is coated on the outer side of the CORE head body, and a second protective layer is coated on the outer side of the first protective layer.

[0010] Preferably, the material of the first protective layer is a fiberglass resin coating, and the second protective layer is an alumina ceramic coating.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, by the size of the circular hole in the inner cavity of the CORE head body, a circular PS board is made with a thickness of about mm. Then, a high-density rigid sponge block slightly larger than the diameter of the circular hole is bonded to one side of the PS board, and the length of the sponge block exactly enters the circular hole in the inner cavity of the CORE head body completely. Then, the PS board is turned inward, and the sponge block is driven to be inserted into the circular hole in the inner cavity of the CORE head body. Because the diameter of the sponge block is slightly larger, when it enters the circular hole in the inner cavity of the CORE head body, it can firmly hold the PS board and prevent it from moving. Because of the size and hardness of the PS board, it can ensure that the connecting bolt cannot move outward in the loose state, and thus it can ensure that the connecting bolt is always in the internal thread hole, so as to ensure that the fixed block will not fall off. Therefore, the possibility of the fixed block falling off is completely improved, the fixed key will not become loose, and the problem of damage to the central axis is solved.

[0013] 2. Through the arrangement of the first shock isolation rubber pad and the second shock isolation rubber pad, the present utility model can play the role of shock isolation between the central axis and the CORE head body when the CORE head body rotates, thereby reducing the adverse effects brought by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the cooperation between the central axis and the fixed block of the present utility model;

[0016] Figure 3 is a schematic cross-sectional structural diagram of the second perspective of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the second protective layer of the present utility model.

[0018] In the figure: 1, central axis; 2, CORE head body; 3, sponge block; 4, fixed key; 5, fixed block; 6, connecting bolt; 7, keyway; 8, first shock isolation rubber pad; 9, second shock isolation rubber pad; 10, PS board; 11, internal thread hole; 12, first protective layer; 13, second protective layer. Detailed implementation manners

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] The central axis 1, CORE head body 2, sponge block 3, fixing key 4, fixing stop block 5, connecting bolt 6, key groove 7, first shock isolation rubber pad 8, second shock isolation rubber pad 9, PS board 10, internal thread hole 11, first protective layer 12, and second protective layer 13 components of the present application are all common standard components or components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0023] Embodiment 1: Please refer to Figures 1 - 3As shown in the figure, the present utility model provides a technical solution: a CORE head assembly for preventing bolt from falling off, which includes a central shaft 1. Inner threaded holes 11 are respectively formed at the front and rear ends on the right side of the central shaft 1. Connecting bolts 6 are threadedly connected to the inner sides of the inner threaded holes 11. A fixed block 5 is fixedly installed on the right side of the central shaft 1 through the connecting bolts 6. A CORE head body 2 is arranged at the right end of the outer surface of the central shaft 1. A keyway 7 is formed at the top of the right end of the central shaft 1. A guiding groove corresponding to the keyway 7 is arranged on the inner wall of the CORE head body 2. A fixing key 4 is arranged between the inner side of the keyway 7 and the inner wall of the CORE head body 2. A PS board 10 adapted to the inner cavity of the CORE head body 2 is arranged on the right side of the fixed block 5. The PS board 10 is circular, and the PS board 10 slides in the inner cavity of the CORE head body 2. A sponge block 3 with a diameter larger than the aperture of the CORE head body 2 is adhered to the right side of the PS board 10. The sponge block 3 is high-density rigid sponge.

[0024] This technical solution: According to the size of the circular hole in the inner cavity of the CORE head body 2, a circular PS board 10 is made with a thickness of about 1 mm. Then, a high-density rigid sponge block 3 slightly larger than the diameter of the circular hole is adhered to one side of the PS board 10. The length of the sponge block 3 just completely enters the circular hole in the inner cavity of the CORE head body 2. Then, the PS board 10 is pushed inward to drive the sponge block 3 into the circular hole in the inner cavity of the CORE head body 2. Because the diameter of the sponge block 3 is slightly larger, it can firmly hold the PS board 10 and prevent it from moving when entering the circular hole in the inner cavity of the CORE head body 2. Since the size and hardness of the PS board 10 can ensure that the connecting bolt 6 cannot move outward in the loosened state, it can ensure that the connecting bolt 6 is always in the inner threaded hole 11, thus ensuring that the fixed block 5 will not fall off. Therefore, the possibility of the fixed block 5 falling off is completely improved, and the fixing key 4 will not become loose, and the problem of damage to the central shaft 1 is solved.

[0025] Embodiment 2: On the basis of Embodiment 1, as shown in the present utility model Figure 3 A first shock isolation rubber pad 8 and a second shock isolation rubber pad 9 that fit the central shaft 1 are embedded at the left end of the inner cavity of the CORE head body 2.

[0026] This technical solution: Through the arrangement of the first shock isolation rubber pad 8 and the second shock isolation rubber pad 9, it can play the role of shock isolation between the central shaft 1 and the CORE head body 2 when the CORE head body 2 rotates, thereby reducing the adverse effects brought by vibration.

[0027] Embodiment 3: On the basis of Embodiment 1, as shown in the present utility model Figure 4 A first protective layer 12 is coated on the outer side of the CORE head body 2, and a second protective layer 13 is coated on the outer side of the first protective layer 12. The material of the first protective layer 12 is a fiberglass resin coating, and the second protective layer 13 is an alumina ceramic coating.

[0028] This technical solution: Through the settings of the first protective layer 12 and the second protective layer 13, and with the assistance of the inherent characteristics of the selected materials, it can effectively improve the corrosion resistance, wear resistance and hardness of the surface of the CORE body 2, reduce the occurrence of abrasion and wear during use, and extend its service life.

[0029] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0030] In addition, to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently contemplated best mode of implementing the present utility model, or those features that are not relevant to the implementation of the present utility model).

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A CORE head assembly for preventing bolts from falling off, comprising a central shaft (1), characterized in that: Internal threaded holes (11) are provided at both the front and rear ends of the right side of the central shaft (1), and the inner side of the internal threaded hole (11) is threadedly connected with a connecting bolt (6). A fixed stopper (5) is fixedly installed on the right side of the central shaft (1) via the connecting bolt (6). A core head body (2) is provided at the right end of the outer surface of the central shaft (1), and a key groove (7) is provided at the top of the right end of the central shaft (1). A fixed key (4) is provided between the inner side of the key groove (7) and the inner wall of the core head body (2). A PS plate (10) adapted to the inner cavity of the core head body (2) is provided on the right side of the fixed stopper (5), and a sponge block (3) having a diameter larger than the hole diameter of the core head body (2) is bonded to the right side of the PS plate (10).

2. A CORE head assembly for preventing bolts from falling off according to claim 1, characterized in that: The sponge block (3) is a high-density hard sponge.

3. A CORE head assembly for preventing bolts from falling off according to claim 1, characterized in that: The PS plate (10) is circular, and the PS plate (10) slides in the inner cavity of the CORE head body (2).

4. A CORE head assembly for preventing bolts from falling off according to claim 1, characterized in that: The inner wall of the CORE head body (2) is provided with a guide groove corresponding to the key groove (7).

5. A CORE head assembly for preventing bolts from falling off according to claim 1, characterized in that: A first shock-isolating rubber pad (8) and a second shock-isolating rubber pad (9) which are in contact with the central axis (1) are embedded at the left end of the inner cavity of the CORE head body (2).

6. A CORE head assembly for preventing bolts from falling off according to claim 1, characterized in that: The outer side of the CORE head body (2) is coated with a first protective layer (12), and the outer side of the first protective layer (12) is coated with a second protective layer (13).

7. A CORE head assembly for preventing bolts from falling off according to claim 6, characterized in that: The material of the first protective layer (12) is a glass fiber reinforced plastic resin coating, and the second protective layer (13) is an alumina ceramic coating.

Images