A CV swing arm steel sleeve disassembly and assembly tool

Abstract

The present invention discloses a CV swing arm steel sleeve disassembly and assembly tool, comprising a positioning sleeve, a main shaft, a bearing assembly, a disassembly nut, a mounting nut and a support flange; the main shaft comprises a rotating handle clamped on the outside of the positioning sleeve, a positioning section connected to the rotating handle and cooperating with the bearing assembly for positioning, and a screw section connected to the positioning section, and the bearing assembly is arranged in the positioning sleeve; the disassembly nut is connected to the screw section, used to clamp the steel sleeve and can pass through the stepped hole of the fixed steel sleeve; the support flange is clamped on the outside of the other end of the positioning sleeve and used to position and press the steel sleeve to be installed; the mounting nut is connected to the screw section, and the periphery of the mounting nut is provided with a first lug clamped in the notch of the connecting rod. The above-mentioned CV swing arm steel sleeve disassembly and assembly tool can complete the disassembly and assembly of the steel sleeve without removing the connecting rod and related parts as a whole, thereby improving the replacement and maintenance efficiency of the steel sleeve.

Description

Technical Field

[0001] The invention relates to the field of special tools, in particular to a CV swing arm steel sleeve disassembly and assembly tool. Background Art

[0002] The YB95 carton transparent paper packaging machine (also called CV) is a packaging unit that performs the last process of cigarette packaging. The purpose of CV is to wrap a layer of transparent paper with a draw string on the cigarette cartons output by the carton packaging machine. Through a series of gears, cams, and rocker mechanisms, transparent paper supply, folding, sealing, and finished product output are achieved. During the operation of the equipment, it is inevitable that the lifting channel will be blocked or other mechanical overloads will occur. Usually, an overload protection device is set on the rocker mechanism.

[0003] Overload protection device such as Figure 1 As shown, the left end of the connecting rod 1414 is hinged to the hinge hole 1402 of the arm 1410 through its hinge hole 1406 and the pin 1401, the connecting rod 1414 is embedded in the groove of the arm 1410, the bushing 1408 is embedded in the mounting hole 1409 of the arm 1410, the steel ball 1407 is installed in the hole of the bushing 1408, and is pressed by the pressure plate 1404, the spring steel sheet 1405 and the screw 1403. The steel sleeve 13 is embedded in the stepped hole 1413 of the connecting rod 1414, and the protruding part of the right side of the steel ball clamps the connecting rod 1414 through the steel sleeve 13 to fix it. Under normal circumstances, the connecting rod 1414 will not fall off from the groove of the arm 1410. When the channel is blocked or the mechanical overload occurs during the lifting process of the lifter, the connecting rod 1414 overcomes the pressure of the steel ball 1407 and disengages from the arm 1410. The falling off of the connecting rod 1414 will trigger the microswitch and the equipment will stop running, thereby playing a protective role without damaging parts.

[0004] During use, after the overload protection device is disengaged and reset many times, the contact position between the steel sleeve 13 and the steel ball 1407 will be worn, and the steel sleeve 13 needs to be replaced regularly. Figure 2-4 As shown, the back of the stepped hole 1413 is provided with an end face 1415, a small hole 1416 formed in the end face 1415, and a notch 1417 connected to the periphery of the small hole 1416. The steel sleeve 13 is embedded in the stepped hole 1413 and has an interference fit with the hole, and is axially positioned by the end face 1415. When disassembling, the right end face of the steel sleeve 13 can only be knocked through the notch 1417 to knock the steel sleeve 13 out to the left. Since the overload protection device is in the machine box, the operating space is limited when disassembling the steel sleeve 13. It is necessary to remove the pin 1401 and the connecting parts on the right side of the connecting rod 1414 (not shown in the figure), take out the assembly of the connecting rod 1414 and the steel sleeve 13 as a whole, and then replace the steel sleeve 13. Due to space limitations, the disassembly and installation process takes a long time. Summary of the invention

[0005] The object of the present invention is to provide a CV swing arm steel sleeve disassembly and assembly tool, which can improve the replacement and maintenance efficiency of the steel sleeve.

[0006] To achieve the above-mentioned object, the present invention provides a CV swing arm steel sleeve disassembly and assembly tool, comprising a positioning sleeve, a main shaft, a bearing assembly, a disassembly nut, a mounting nut and a support flange;

[0007] The main shaft includes a rotating handle locked on the outside of the positioning sleeve, a positioning section connected to the rotating handle and cooperating with the bearing assembly for positioning, and a screw section connected to the positioning section, and the bearing assembly is arranged in the positioning sleeve;

[0008] The disassembly nut is connected to the screw section, used to clamp the steel sleeve and can pass through the stepped hole of the fixed steel sleeve; the support flange is clamped to the outer side of the other end of the positioning sleeve and is used to position and press the steel sleeve to be installed; the installation nut is connected to the screw section, and the periphery of the installation nut is provided with a first lug that is embedded in the groove of the connecting rod.

[0009] Optionally, a second lug is provided on the periphery of the disassembly nut, and the second lug is used to abut against the thickness surface of the steel sleeve.

[0010] Optionally, a spacer ring is provided in the middle of the positioning sleeve, and the spacer ring divides the sleeve into a first cavity and a second cavity which are interconnected. The bearing assembly includes a first ball bearing and a thrust bearing arranged in the first cavity, and a second ball bearing arranged in the second cavity.

[0011] Optionally, a positioning groove for positioning the thrust bearing is provided on a side of the spacer ring close to the first cavity, and a positioning boss coaxially arranged with the positioning section is provided on a side of the rotary handle close to the first cavity.

[0012] Optionally, a fixing groove is provided on the periphery of the positioning section near one end of the screw section, and an elastic retaining ring for stopping the second ball bearing is provided in the fixing groove.

[0013] Optionally, a spacer sleeve is provided between the first ball bearing and the thrust bearing.

[0014] Optionally, the supporting flange includes a boss, a first boss provided on a first side of the boss and cooperating with the positioning sleeve, and a second boss provided on a second side of the boss and used to fit a positioning steel sleeve. The first boss, the boss and the second boss are coaxially provided with a flange through hole for the screw segment to pass through.

[0015] Optionally, the rotary handle has a force hole opened in a radial direction of the main shaft.

[0016] Optionally, it further includes a storage cover that cooperates with the positioning sleeve, and the storage cover is provided with a threaded hole connected to the screw segment.

[0017] Optionally, the diameter of the boss is smaller than the inner diameter of the storage cover.

[0018] Compared with the above background technology, the present invention aims at the problem of inconvenient assembly and disassembly of the steel sleeve on the CV swing arm mechanism, and designs a special CV swing arm steel sleeve disassembly and assembly tool, which can use the positioning sleeve to abut against the connecting rod fixed with the steel sleeve, and use the bearing assembly and the positioning sleeve to position the main shaft. After the screw section of the main shaft passes through the steel sleeve and the stepped hole of the fixed steel sleeve, the disassembly nut is fixed and screwed with the screw section, and the rotating handle is turned, and the screw section and the disassembly nut are gradually screwed together. Due to the limitation of the positioning sleeve, the disassembly nut moves toward one end of the rotating handle to pull out the steel sleeve;

[0019] The installation process of the steel sleeve is the opposite. First, the supporting flange is installed on the main shaft and matched with the positioning sleeve. Then the steel sleeve is inserted into the screw segment and supported and positioned with the help of the supporting flange. The screw segment is passed through the stepped hole of the connecting rod. The mounting nut is installed on the small hole side of the stepped hole. The first lug is stuck in the groove to prevent the mounting nut from rotating. Then the rotating handle is turned, and the rotating handle moves toward the mounting nut, acting on the positioning sleeve and the supporting flange in turn. The supporting flange presses the steel sleeve into the stepped hole.

[0020] The above-mentioned CV swing arm steel sleeve disassembly and assembly tool is light in size and can quickly disassemble and assemble the steel sleeve with the help of a main shaft, a positioning sleeve, a disassembly nut, a support flange and a mounting nut without disassembling the connecting rod, thereby improving the maintenance efficiency of the steel sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of an overload protection device in a CV rocker mechanism;

[0023] Figure 2 It is a schematic diagram of the assembly of the connecting rod and the steel sleeve;

[0024] Figure 3 This is a front view of the step hole of the connecting rod;

[0025] Figure 4 This is a schematic diagram of the back side of the step hole of the connecting rod;

[0026] Figure 5An exploded view of a CV swing arm steel sleeve disassembly and assembly tool provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the product form of the CV swing arm steel sleeve disassembly and assembly tool;

[0028] Figure 7 Schematic diagram of CV sway bar steel sleeve removal tool for steel sleeve removal;

[0029] Figure 8 Schematic diagram of installing the steel sleeve for the CV sway bar steel sleeve removal and assembly tool;

[0030] Fig. 9 for Figure 5 The structural diagram of the central spindle;

[0031] Fig.10 for Figure 5 The structural diagram of the middle positioning sleeve;

[0032] Fig.11 for Figure 5 Structural diagram of the middle support flange;

[0033] Fig.12 for Figure 5 Structural diagram of the middle storage cover;

[0034] Fig.13 for Figure 5 Structural diagram of disassembling the nut;

[0035] Fig.14 for Figure 5 Structural diagram of the installation nut.

[0036] in:

[0037] 1-spindle, 2-washer, 3-circlip, 4-mounting nut, 5-removal nut, 6-storage cover, 7-support flange, 8-second ball bearing, 9-positioning sleeve, 10-thrust bearing, 11-spacer, 12-first ball bearing;

[0038] 101-rotating handle, 102-force application hole, 103-positioning boss, 104-positioning section, 105-fixing groove, 106-screw section;

[0039] 401-first lug;

[0040] 501 - second lug;

[0041] 601-threaded hole, 602-storage cavity;

[0042] 701-flange through hole, 702-first boss, 703-shoulder, 704-second boss;

[0043] 901-positioning groove, 902-spacer ring, 903-process notch. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] It should be noted that the “first end” mentioned in the present application specifically refers to the end of the rotating handle 101 , and the “second end” refers to the end close to the screw segment 106 .

[0047] Please refer to Figure 5 , Figure 6 and Fig. 9 The CV rocker arm steel sleeve disassembly and assembly tool provided in one embodiment of the present invention comprises a positioning sleeve 9, a main shaft 1, a bearing assembly, a disassembly nut 5, a mounting nut 4 and a support flange 7. The main shaft 1 comprises a rotating handle 101, a positioning section 104 and a screw section 106 which are coaxially arranged in sequence. The bearing assembly is arranged in the positioning sleeve 9 to cooperate with the positioning section 104 to radially position the main shaft 1 relative to the positioning sleeve 9. By rotating the rotating handle 101, the main shaft 1 is radially immobile, and the disassembly nut 5 moves toward one end of the rotating handle 101, driving the steel sleeve 13 from Figure 3 The mounting nut 4 is disengaged from the stepped hole 1413 shown in the figure; or the mounting nut 4 is fixed by the notch 1417 of the stepped hole 1413, and the mounting nut 4 is kept stationary by rotating the handle 101, and the spindle 1, the positioning sleeve 9 and the supporting flange 7 move toward the mounting nut 4, and the steel sleeve 13 is pressed into the stepped hole 1413 with the help of the supporting flange 7.

[0048] In the above embodiment, the bearing assembly includes a first ball bearing 12, a second ball bearing 8 and a thrust bearing 10. The first ball bearing 12 is arranged in close contact with the rotating handle 101, and the thrust bearing 10 is arranged between the first ball bearing 12 and the second ball bearing 8. The thrust bearing 10 is used to transmit the axial thrust of the rotating handle 101 acting on the bearing assembly to the positioning sleeve 9. The first ball bearing 12 and the second ball bearing 8 can well realize the radial positioning of the main shaft 1 relative to the positioning sleeve 9, and avoid the main shaft 1 from being offset relative to the positioning sleeve 9. In addition, the rotating handle 101 also opens a force hole 102 along the radial direction of the main shaft, so as to drive the rotating handle 101 to rotate with the help of a wrench or a rod.

[0049] In order to realize that the thrust bearing 10 transmits the axial thrust to the positioning sleeve 9, the positioning sleeve 9 provided in the present application has the following structure: Fig.10 As shown, a spacer ring 902 is provided in the middle of the positioning sleeve 9, and the spacer ring 902 divides the positioning sleeve 9 into a first cavity and a second cavity. The first cavity is adjacent to the rotating handle 101, and the positioning section 104 of the main shaft 1 can pass through the center of the spacer ring 902. The first ball bearing 12 and the thrust bearing 10 are arranged in the first cavity, and the second ball bearing 8 is arranged in the second cavity. An annular positioning groove 901 is provided between the spacer ring 902 located on one side of the first cavity and the inner wall of the positioning sleeve 9, and the thrust bearing 10 is fixed in the annular positioning groove 901, and the axial thrust is transmitted to the positioning sleeve 9 by means of the spacer ring 902. The spacer ring 902 is provided with a process notch 903 to facilitate the disassembly and replacement of the thrust bearing 10.

[0050] On the basis of the above embodiment, a positioning boss 103 coaxially arranged with the positioning section 104 is provided on the side of the rotating handle 101 of the main shaft 1 that is in contact with the first ball bearing 12, and the diameter of the positioning boss 103 is larger than the inner ring diameter of the first ball bearing 12 and smaller than the outer ring diameter of the first ball bearing 12, thereby avoiding interference between the outer ring of the first ball bearing 12 and the rotating handle 101. A spacer sleeve 11 is further provided between the thrust bearing 10 and the first ball bearing 12, and the outer diameter of the spacer sleeve 11 meets the use requirements of the first ball bearing 12 and the thrust bearing 10.

[0051] Furthermore, an annular fixing groove 105 is provided on the outer periphery of the positioning section 104 near the end of the screw section 106, an elastic retaining ring 3 is arranged in the fixing groove 105, and the second ball bearing 8 is arranged between the spacer ring 902 and the elastic retaining ring 3, that is, the second ball bearing 8 is axially limited by the elastic retaining ring 3. A washer 2 is arranged between the elastic retaining ring 3 and the second ball bearing 8 as needed, and the washer 2 plays a role in adjusting the axial clearance.

[0052] The structure of disassembling nut 5 and installing nut 4 can be referred to Fig.13 and Fig.14 , both of which use special-shaped nuts. Among them, the disassembly nut 5 can axially clamp the steel sleeve 13. Specifically, the disassembly nut 5 is provided with two sets of second lugs 501 protruding radially toward the outer circumference, and the second lugs 501 are fitted and clamped on the thickness surface of the steel sleeve 13. Please combine Figure 3 and Figure 4 The disassembly nut 5 can pass through the stepped hole 1413 as a whole, and the main part of the disassembly nut 5 can be removed from Figure 4The small hole 1416 shown passes through, and the second lug 501 cooperates with the notch 1417 to prevent the nut 5 from rotating circumferentially when being disassembled. When the second lug 501 enters the stepped hole 1413 from the notch 1417, the steel sleeve 13 is pulled out of the stepped hole 1413, as shown in FIG. 7 . The mounting nut 4 is provided with two groups of first lugs 401 radially protruding toward the outer circumference, and the size of the first lug 401 is larger than the second lug 501, so that when the first lug 401 is placed in the notch 1417, the mounting nut 4 as a whole cannot move axially along the stepped hole 1413, and the mounting nut 4 is limited by the first lug 401 and the notch 1417 along the circumferential direction, and the mounting nut 4 cannot rotate. When the rotating handle 101 is rotated, the rotating handle 101 acts on the first ball bearing 12, the thrust bearing 10, the positioning sleeve 9 and the supporting flange 7 in sequence, and the supporting flange 7 presses the steel sleeve 13 into the stepped hole 1413 to complete the installation of the steel sleeve 13. Figure 8 shown.

[0053] In the above embodiment, the structure of the supporting flange 7 is as follows: Fig.11 As shown, the support flange 7 includes a convex shoulder 703 in the middle, a first boss 702 connected to the first side of the convex shoulder 703, the diameter of the first boss 702 matches the inner diameter of the positioning sleeve 9, and is clamped on the outer side of the positioning sleeve 9 by means of the convex shoulder 703; a second boss 704 is provided on the second side of the convex shoulder 703, the diameter of the second boss 704 matches the inner diameter of the steel sleeve 13, and the steel sleeve 13 is sleeved on the outer periphery of the second boss 704 to achieve support and positioning. The first boss 702, the convex shoulder 703 and the second boss 704 are coaxially provided with a flange through hole 701, and the screw section 106 passes through the flange through hole 701 and extends into the stepped hole 1413, and alternately cooperates with the disassembly nut 5 and the installation nut 4 to achieve the disassembly and installation of the steel sleeve 13. In the process of disassembling the steel sleeve 13, it is possible to directly press the positioning sleeve 9 against the periphery of the stepped hole 1413 of the connecting rod 1414 without installing the support flange 7.

[0054] It can be understood that the first end of the support flange 7 connected to the positioning sleeve 9 can not only adopt the above-mentioned boss shape, but also be set as a sleeve structure, the sleeve structure has an internal thread, and the outer periphery of the second end of the positioning sleeve 9 has an external thread, and the connection between the support flange 7 and the positioning sleeve 9 is achieved by screwing the internal thread and the external thread together.

[0055] To further optimize the above embodiment, the CV swing arm steel sleeve disassembly and assembly tool provided in the present application also includes a storage cover 6 that abuts against the positioning sleeve 9, such as Figure 6 and Fig.12As shown, the storage cover 6 is provided with a storage cavity 602, and a threaded hole 601 is provided in the center of the storage cover 6 to match the screw segment 106 of the main shaft 1. When the CV rocker arm steel sleeve disassembly tool is in the storage state, the installation nut 4 and the removal nut 5 are connected to the screw segment 106, and the storage cover 6 is connected to the screw segment 106 to protect the installation nut 4 and the removal nut 5 in the storage cavity 602 to prevent the installation nut 4 and the removal nut 5 from being lost or damaged. The boss 703 of the support flange 7 is set to be smaller than the inner diameter of the storage cover 6, so that the storage cover 6 covers and protects the support flange 7.

[0056] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0057] The above is a detailed introduction to the CV swing arm steel sleeve disassembly and assembly tool provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A CV rocker arm steel sleeve disassembly and assembly tool, characterized in that: It includes a positioning sleeve, a main shaft, a bearing assembly, a disassembly nut, a mounting nut and a support flange; The main shaft includes a rotating handle locked on the outside of the positioning sleeve, a positioning section connected to the rotating handle and cooperating with the bearing assembly for positioning, and a screw section connected to the positioning section, and the bearing assembly is arranged in the positioning sleeve; A connecting rod is pressed against the positioning sleeve, a side of the connecting rod is provided with a stepped hole, a back side of the stepped hole is provided with an end face, a small hole is provided on the end face and a notch connected to the periphery of the small hole; The disassembly nut is connected to the screw section, used to clamp the steel sleeve and can pass through the stepped hole of the fixed steel sleeve; the support flange is clamped to the outer side of the other end of the positioning sleeve and is used to position and press the steel sleeve to be installed; the installation nut is connected to the screw section, and the periphery of the installation nut is provided with a first lug that is embedded in the groove of the connecting rod.

2. The CV swing arm steel sleeve disassembly and assembly tool according to claim 1, characterized in that: A second lug is provided on the periphery of the disassembly nut, and the second lug is used to abut against the thickness surface of the steel sleeve.

3. The CV swing arm steel sleeve disassembly and assembly tool according to claim 1, characterized in that: A spacer ring is provided in the middle of the positioning sleeve, and the spacer ring divides the sleeve into a first cavity and a second cavity which are interconnected. The bearing assembly includes a first ball bearing and a thrust bearing arranged in the first cavity, and a second ball bearing arranged in the second cavity.

4. The CV swing arm steel sleeve disassembly and assembly tool according to claim 3, characterized in that: A positioning groove for positioning the thrust bearing is provided on one side of the spacer ring close to the first cavity, and a positioning boss coaxially arranged with the positioning section is provided on one side of the rotary handle close to the first cavity.

5. The CV swing arm steel sleeve disassembly and assembly tool according to claim 3, characterized in that: A fixing groove is provided on the periphery of one end of the positioning section close to the screw section, and an elastic retaining ring for stopping the second ball bearing is provided in the fixing groove.

6. The CV swing arm steel sleeve disassembly and assembly tool according to claim 3 or 4, characterized in that: A spacer sleeve is provided between the first ball bearing and the thrust bearing.

7. The CV swing arm steel sleeve disassembly and assembly tool according to any one of claims 1 to 5, characterized in that: The supporting flange includes a boss, a first boss provided on a first side of the boss and cooperating with the positioning sleeve, and a second boss provided on a second side of the boss and used to fit a positioning steel sleeve. The first boss, the boss and the second boss are coaxially provided with a flange through hole for the screw segment to pass through.

8. The CV swing arm steel sleeve disassembly and assembly tool according to claim 1, characterized in that: The rotating handle is provided with a force-providing hole along the radial direction of the main shaft.

9. The CV swing arm steel sleeve disassembly and assembly tool according to claim 7, characterized in that: It also includes a storage cover that cooperates with the positioning sleeve, and the storage cover is provided with a threaded hole connected to the screw segment.

10. The CV swing arm steel sleeve disassembly and assembly tool according to claim 9, characterized in that: The diameter of the boss is smaller than the inner diameter of the storage cover.

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