Main shaft oil seal disassembling and assembling tool

Abstract

The utility model discloses a main shaft oil seal disassembling and assembling tool which comprises a tool body, the tool body comprises a combination cylinder and a guide cylinder, and the axis of the guide cylinder and the axis of the combination cylinder are collinear. The outer diameter of the combination cylinder is larger than that of the guide cylinder, a first end plate is arranged at the second end of the combination cylinder, the guide cylinder is connected to the first end plate, and a through hole is formed in the first end plate; a second end plate is arranged at the second end of the guide cylinder, and a threaded hole is formed in the middle of the second end plate; an inner cavity of the combination cylinder and an inner cavity of the guide cylinder are communicated to form a containing cavity used for containing a shaft body on the outer side of the oil seal, and the guide cylinder is in clearance fit with the shaft head. The outer diameter of the combination cylinder is not larger than the outer diameter of the oil seal, and the inner diameter of the combination cylinder is not smaller than the inner diameter of the oil seal. The utility model has the advantages that the oil seal is pulled out or pushed into a sealing position in a manner of parallel movement along the axis of the main shaft by attaching the combination cylinder to the oil seal and in clearance fit between the guide cylinder and the shaft head.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tools for cigarette production machinery and equipment, in particular to a main shaft oil seal disassembly and assembly tool. Background Art

[0002] The 725 packaging machine is a small box packaging forming device of the FXS ultra-high-speed packaging unit. The main shaft in the main transmission box of the 725 packaging machine transmits power to the external synchronous pulley, and the synchronous pulley then transmits power to the cigarette pack output device through the synchronous belt. Due to the high tension required by the synchronous belt, the output end of the main shaft is subjected to a large force, which makes the oil seal very easy to be damaged and leak. During the replacement of the oil seal, due to the large size of the oil seal and the structure of the main shaft, there are no effective oil seal disassembly and assembly tools on the market. At present, the oil seal is disassembled by using chisel tools to destroy the oil seal, and the installation process is even more inconvenient. Due to the large size of the oil seal and the high interference with the equipment parts, it is difficult to install the oil seal into the equipment with good fit. Poor installation can easily reduce the life of the oil seal. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the utility model provides a spindle oil seal disassembly and assembly tool, which combines the cylinder to fit the oil seal and the guide cylinder and the shaft head to match the clearance, so that the oil seal can be pulled out or pushed into the sealing position parallel to the spindle axis.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A spindle oil seal disassembly and assembly tool comprises a tool body, the tool body comprises a coupling cylinder and a guide cylinder, the axis of the guide cylinder is colinear with the axis of the coupling cylinder; the outer diameter of the coupling cylinder is larger than the outer diameter of the guide cylinder, the second end of the coupling cylinder has a first end plate, the guide cylinder is connected to the first end plate, the first end plate is provided with a through hole; the second end of the guide cylinder is provided with a second end plate, the middle part of the second end plate is provided with a threaded hole; the inner cavity of the coupling cylinder and the inner cavity of the guide cylinder are connected to form an accommodating cavity for accommodating the shaft body outside the oil seal, and the guide cylinder is clearance-matched with the shaft head; the outer diameter of the coupling cylinder is not larger than the outer diameter of the oil seal, and the inner diameter of the coupling cylinder is not smaller than the inner diameter of the oil seal.

[0006] Furthermore, the tool also includes a driving screw and a self-tapping screw.

[0007] Furthermore, the inner diameter of the guide cylinder is 0.2-4 mm larger than the diameter of the shaft head.

[0008] Furthermore, the inner diameter of the guide cylinder is 1-2 mm larger than the diameter of the shaft head.

[0009] Furthermore, the outer diameter of the combining cylinder is smaller than the outer diameter of the oil seal, and the inner diameter of the combining cylinder is larger than the inner diameter of the oil seal, so that the combining cylinder can be easily fitted to the end face of the oil seal and interference can be prevented when the tool body moves.

[0010] Furthermore, the outer diameter of the coupling cylinder is 1-3 mm smaller than the outer diameter of the oil seal, and the inner diameter of the coupling cylinder is 1-3 mm larger than the inner diameter of the oil seal.

[0011] Furthermore, the outer diameter of the combining cylinder is set to 98-99 mm, and the inner diameter of the combining cylinder is set to 71-72 mm.

[0012] Furthermore, the length L0 of the coupling cylinder is greater than the distance L4 from the oil seal to the first end of the shaft head, so that the coupling cylinder can adapt to various main shaft shapes.

[0013] Furthermore, the through holes include a plurality of through holes evenly distributed around the axis of the coupling cylinder, so that the oil seal is evenly stressed.

[0014] Furthermore, the number of the through holes includes two, three and four.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) By combining the cylinder with the oil seal and matching the clearance between the guide cylinder and the shaft head, the oil seal can enter the sealing position in parallel motion along the main shaft axis during installation, which facilitates the installation of the oil seal, effectively avoids damage to the oil seal, and improves the installation accuracy of the oil seal.

[0017] (2) The tool body is connected to the oil seal by a self-tapping screw, and then force is applied by a driving screw. The structure is compact and force application is convenient, which improves the convenience of oil seal disassembly and avoids damage to the spindle during disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0019] Figure 1 The exploded view is a schematic diagram of the structure of the spindle oil seal disassembly and assembly tool of the utility model.

[0020] Figure 2 The utility model is a cross-sectional view of the structure schematic diagram of the main shaft oil seal disassembly and assembly tool when disassembling the oil seal.

[0021] In the figure: 100-tool body; 101-combination cylinder; 102-first end plate; 103-through hole; 104-guide cylinder; 105-second end plate; 106-threaded hole; 200-drive screw; 300-self-tapping screw; 400-oil seal; 500-shaft body; 501-spindle; 502-shaft head. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0023] In the description of the present invention, it should be noted that the term "including" and its variations represent open inclusion, that is, "including but not limited to". The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] The utility model provides a spindle oil seal disassembly and assembly tool, such as Figure 1 As shown, it includes a tool body 100, the tool body 100 includes a coupling cylinder 101 and a guide cylinder 104, the axis of the guide cylinder 104 is colinear with the axis of the coupling cylinder 101; the outer diameter of the coupling cylinder 101 is larger than the outer diameter of the guide cylinder 104, the second end of the coupling cylinder 101 has a first end plate 102, the guide cylinder 104 is connected to the first end plate 102, the first end plate 102 is provided with a through hole 103; the second end of the guide cylinder 104 is provided with a second end plate 105, the middle part of the second end plate 105 is provided with a threaded hole 106. The inner cavity of the coupling cylinder 101 and the inner cavity of the guide cylinder 104 are connected to form a receiving cavity, which is used to receive the shaft body 500 outside the oil seal 400, and the guide cylinder 104 is clearance-matched with the shaft head 502. The outer diameter of the coupling cylinder 101 is not greater than the outer diameter of the oil seal 400 , and the inner diameter of the coupling cylinder 101 is not less than the inner diameter of the oil seal 400 .

[0025] The outer diameter of the coupling cylinder 101 is greater than the outer diameter of the guide cylinder 104 , and the coupling cylinder 101 and the guide cylinder 104 form a stepped shape. The accommodating cavity of the tool body 100 is used to accommodate the shaft body 500 outside the oil seal 400 (including the main shaft 501 and the shaft head 502 outside the oil seal 400). Specifically, the outer diameter of the coupling cylinder 101 (the diameter of the outer cylindrical surface of the coupling cylinder 101) is not larger than the outer diameter of the oil seal 400 (the diameter of the bearing chamber), the inner diameter of the coupling cylinder 101 (the diameter of the inner cylindrical surface of the coupling cylinder 101) is not smaller than the inner diameter of the oil seal 400 (the diameter of the main shaft 501), the inner diameter of the coupling cylinder 101 and the inner diameter of the guide cylinder 104 are larger than the diameter of the shaft head 502, and the tool body 100 can be inserted from the shaft head 502 end; when the oil seal 400 is in the sealing position, the length L0 of the coupling cylinder 101 is not smaller than the distance L1 from the oil seal 400 to the shaft shoulder of the main shaft 501, and the distance L2 from the first end of the coupling cylinder 101 to the second end plate 105 is not smaller than the distance L3 from the oil seal 400 to the second end of the shaft head 502. In this way, when the shaft head 502 is inserted into the tool body 100 , the shaft body 500 outside the oil seal 400 can be accommodated in the accommodating cavity, and the end surface of the first end of the coupling cylinder 101 can fit the end surface of the oil seal 400 .

[0026] The tool also includes a driving screw 200 and a self-tapping screw 300. A suitable driving screw 200 can be selected as needed, so that when the driving screw 200 rotates, the driving tool body 100 moves to a length that can pull out the oil seal 400. The driving screw 200 can directly use a bolt, and use a wrench to rotate the bolt, or a handle is provided at the free end of the driving screw 200 to facilitate the rotation of the driving screw 200. A suitable self-tapping screw 300 can be selected as needed, so that the self-tapping screw 300 can pass through the through hole 103 and be screwed into the oil seal 400.

[0027] When removing oil seal 400, refer to Figure 2 As shown, the tool body 100 is inserted from the shaft head 502, so that the shaft body 500 outside the oil seal 400 is accommodated in the accommodating cavity until the end surface of the first end of the cylinder 101 is attached to the oil seal 400, and the self-tapping screw 300 is placed in the through hole 103, and the self-tapping screw 300 is screwed into the oil seal 400 with a hand drill or other tools to connect the oil seal 400 to the tool body 100. Then, the driving screw 200 is screwed into the threaded hole 106 until the driving screw 200 supports the shaft head 502, and the driving screw 200 is continuously rotated. Since the driving screw 200 is supported by the shaft head 502, an outward driving force is generated on the tool body 100, so that the tool body 100 moves outward along the axis direction of the main shaft 501, thereby pulling out the oil seal 400, and completing the disassembly process of the oil seal 400. The tool body 100 is connected to the oil seal 400 by the self-tapping screw 300, and then the force is applied by the driving screw 200. The structure is compact and the force application is convenient, which improves the convenience of disassembly of the oil seal 400 and can avoid damage to the main shaft 501 during disassembly.

[0028] When installing the oil seal 400, remove the driving screw 200 and the self-tapping screw 300, sleeve the oil seal 400 on the main shaft 501, insert the tool body 100 from the shaft head 502 until the end surface of the first end of the coupling cylinder 101 fits the oil seal 400, push the tool body 100 inward, thereby pushing the oil seal 400 to move along the axis of the main shaft 501, until the oil seal 400 moves to the sealing position, thereby completing the installation of the oil seal 400. If resistance is encountered, a hammer can be used to knock the first end plate 102 or the second end plate 105 of the tool body 100 to knock the oil seal 400 into the sealing position. By fitting the oil seal 400 with the coupling cylinder 101 and the clearance between the guide cylinder 104 and the shaft head 502, the oil seal 400 can enter the sealing position in a parallel motion along the axis of the main shaft 501 during installation, which facilitates the installation of the oil seal 400, effectively avoids damage to the oil seal 400, and improves the installation accuracy of the oil seal 400.

[0029] In order to guide and position the movement of the tool body 100, the guide cylinder 104 is clearance-matched with the shaft head 502. Preferably, the inner diameter of the guide cylinder 104 is 0.2-4 mm larger than the diameter of the shaft head 502. More preferably, the inner diameter of the guide cylinder 104 is 1-2 mm larger than the diameter of the shaft head 502. For example, the inner diameter of the guide cylinder 104 is 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm larger than the diameter of the shaft head 502, so that the clearance between the two is 0.1-2 mm. The inner diameter of the guide cylinder 104 is slightly larger than the diameter of the shaft head 502, and there is a slight gap between the two, which makes it convenient to insert the tool body 100 from the shaft head 502. When inserting the tool body 100, the tool body 100 can be guided and positioned so that the combining cylinder 101 fits roughly and evenly in the middle of the oil seal 400; at the same time, when the tool body 100 moves, its moving direction can also be guided and positioned so that the tool body 100 and the oil seal 400 move along the axis of the main shaft 501, preventing the tool body 100 and the oil seal 400 from being skewed, and allowing the oil seal 400 to be pulled out or pushed into the sealing position in a parallel motion.

[0030] In some embodiments, the outer diameter of the coupling cylinder 101 is smaller than the outer diameter of the oil seal 400, and the inner diameter of the coupling cylinder 101 is larger than the inner diameter of the oil seal 400. Preferably, the outer diameter of the coupling cylinder 101 is 1-3 mm smaller than the outer diameter of the oil seal 400, and the inner diameter of the coupling cylinder 101 is 1-3 mm larger than the inner diameter of the oil seal 400. For example, the outer diameter of the coupling cylinder 101 is 1 mm, 2 mm, 3 mm smaller than the outer diameter of the oil seal 400, and the inner diameter of the coupling cylinder 101 is 1 mm, 2 mm, 3 mm larger than the inner diameter of the oil seal 400. The end surface of the first end of the coupling cylinder 101 is slightly smaller than the oil seal 400, so that when the tool is inserted from the shaft head 502, when the end surface of the first end of the coupling cylinder 101 fits the oil seal 400, the fitting area with the oil seal 400 can be increased, so that the oil seal 400 is evenly stressed. At the same time, a gap is provided between the outer cylindrical surface of the coupling cylinder 101 and the bearing chamber, and a gap is provided between the inner cylindrical surface of the coupling cylinder 101 and the spindle 501, so that interference can be prevented when the tool body 100 moves, and the tool body 100 can move smoothly along the axis direction of the spindle 501. For example, the bearing chamber diameter (outer diameter of the oil seal 400) of the 725 packaging machine is 100 mm, and the diameter (inner diameter of the oil seal 400) of the spindle 501 is 70 mm. The outer diameter of the coupling cylinder 101 is set to 98-99 mm, so that the outer cylindrical surface of the coupling cylinder 101 can be prevented from interfering with the equipment bearing chamber, and the inner diameter of the coupling cylinder 101 is set to 71-72 mm, so that the inner cylindrical surface of the coupling cylinder 101 can be prevented from interfering with the spindle 501.

[0031] In some embodiments, the length L0 of the coupling cylinder 101 is greater than the distance L4 from the oil seal 400 to the first end of the shaft head 502, so that the coupling cylinder 101 can adapt to various shapes of the main shaft 501. The inner diameter of the coupling cylinder 101 is relatively large, and the length L0 of the coupling cylinder 101 is increased to adapt to various shapes of the main shaft 501. For example, when the main shaft 501 is a step-type, the coupling cylinder 101 can be sleeved on the step-type main shaft 501 outside the oil seal 400, and the guide cylinder 104 is sleeved on the shaft head 502.

[0032] In some embodiments, the through holes 103 include a plurality of through holes 103 evenly distributed around the axis of the coupling cylinder 101, so that the oil seal 400 is evenly stressed. Preferably, the number of through holes 103 includes two, three and four. For example, the through holes 103 can be set to two symmetrically arranged around the axis of the coupling cylinder 101. When the self-tapping screws 300 are screwed into the oil seal 400 and the oil seal 400 is pulled out, the oil seal 400 can be evenly stressed, preventing the oil seal 400 from tilting, and pulling out the oil seal 400 along the axis direction of the main shaft 501. The through holes 103 can also be set to three, four, etc. evenly distributed around the axis of the coupling cylinder 101, so that the oil seal 400 is more firmly connected to the coupling cylinder 101. If three or four self-tapping screws 300 are screwed in when the oil seal 400 is tightly sealed, it is more convenient to pull out the oil seal 400.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle oil seal disassembly and assembly tool, characterized in that: It includes a tool body, which includes a combining cylinder and a guide cylinder, the axis of the guide cylinder is colinear with the axis of the combining cylinder; the outer diameter of the combining cylinder is larger than the outer diameter of the guide cylinder, the second end of the combining cylinder has a first end plate, the guide cylinder is connected to the first end plate, the first end plate is provided with a through hole; the second end of the guide cylinder is provided with a second end plate, the middle part of the second end plate is provided with a threaded hole; the inner cavity of the combining cylinder and the inner cavity of the guide cylinder are connected to form an accommodating cavity for accommodating the shaft body outside the oil seal, and the guide cylinder is clearance-matched with the shaft head; the outer diameter of the combining cylinder is not larger than the outer diameter of the oil seal, and the inner diameter of the combining cylinder is not smaller than the inner diameter of the oil seal.

2. The spindle oil seal disassembly and assembly tool according to claim 1, characterized in that: The tool also includes a drive screw and a self-tapping screw.

3. The spindle oil seal disassembly and assembly tool according to claim 1, characterized in that: The inner diameter of the guide cylinder is 0.2-4 mm larger than the diameter of the shaft head.

4. The spindle oil seal disassembly and assembly tool according to claim 3, characterized in that: The inner diameter of the guide cylinder is 1-2 mm larger than the diameter of the shaft head.

5. The spindle oil seal disassembly and assembly tool according to claim 1, characterized in that: The outer diameter of the combining cylinder is smaller than the outer diameter of the oil seal, and the inner diameter of the combining cylinder is larger than the inner diameter of the oil seal.

6. The spindle oil seal disassembly and assembly tool according to claim 5, characterized in that: The outer diameter of the coupling cylinder is 1-3 mm smaller than the outer diameter of the oil seal, and the inner diameter of the coupling cylinder is 1-3 mm larger than the inner diameter of the oil seal.

7. The spindle oil seal disassembly and assembly tool according to claim 5 or 6, characterized in that: The outer diameter of the combining cylinder is set to 98-99 mm, and the inner diameter of the combining cylinder is set to 71-72 mm.

8. The spindle oil seal disassembly and assembly tool according to claim 1, characterized in that: The length L0 of the coupling cylinder is greater than the distance L4 from the oil seal to the first end of the shaft head.

9. The spindle oil seal disassembly and assembly tool according to claim 1, characterized in that: The through holes include a plurality of through holes evenly distributed around the axis of the combining cylinder.

10. The spindle oil seal disassembly and assembly tool according to claim 9, characterized in that: The number of the through holes includes two, three and four.

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