Rocker arm mounting tool, rocker arm assembly and packaging machine lifter

Abstract

The utility model relates to the technical field of cigarette manufacturing, and discloses a rocker arm installation tool, a rocker arm assembly and a packaging machine lifter, the rocker arm assembly can be rapidly installed in place through the rocker arm installation tool, the technical requirement for assembling of the packaging machine lifter is met, and a conical auxiliary positioning part is arranged at one end of a pin shaft. When the pin shaft is mounted, the pin holes in the large rocker arm and the small rocker arm help one-time alignment and coaxiality through the conical auxiliary positioning part; the other end of the pin shaft is provided with a control groove, the control protrusion of the control piece is selectively arranged in the control groove, the control piece and the pin shaft can rotate coaxially, the pin shaft can still be rotated after the pin shaft is installed in the first pin hole and the second pin hole in the large rocker arm and the small rocker arm, and the conical positioning pit in the pin shaft can be conveniently aligned with the threaded positioning hole in the small rocker arm. And the positioning screw is screwed in the threaded positioning hole and can be inserted into the conical positioning pit, so that the maintenance time is effectively shortened, the effective operation rate is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cigarette manufacturing technology, and in particular to a rocker arm mounting fixture, a rocker arm assembly, and a packaging machine lifter. Background Technology

[0002] In cigarette production, cigarette box packaging is a crucial process that requires the use of packaging machines. The function of the packaging machine's lifter is generally to raise the packaged cigarette packs or cartons along with a single sheet of transparent paper with a pull string. During this lifting process, the transparent paper is wrapped in an inverted "U" shape on the surface of the cigarette box and raised to a position flush with the next packaging channel. Then, the transparent paper folding plate and the cigarette pusher plate push the cigarette packs or cartons with the transparent paper to the right.

[0003] During the production process of packaging machines, unexpected factors often result in cigarette cartons or packs not properly wrapped with their outer label paper. These cigarette cartons or packs can become clogged when pushed to the elevator and lifted. To prevent the elevator from malfunctioning due to blockage and potentially damaging the machine, an overload protection device is added to the elevator. Existing overload protection devices typically consist of an overload elastic plate and an overload ball bearing. The overload elastic plate, through a connector, holds the overload ball bearing in the placement hole of the small rocker arm, which is responsible for the main work. When a blockage occurs at the elevator, causing machine overload, the overload ball bearing disengages from the placement hole of the small rocker arm, overcoming the pressure of the overload elastic plate. This disengages the small and large rocker arms, allowing the elevator to continue its reciprocating motion, with the large rocker arm continuing to swing. However, the small rocker arm will no longer swing with the large rocker arm, and the elevator will cease its effective work. The blocked area will no longer be lifted, thus protecting the machine from overload.

[0004] In existing technology, since any component in the overload protection device needs to be replaced or repaired after damage, the workers must disassemble the hinge structure between the small and large rocker arms and separate the small and large rocker arms before replacement or repair can be performed. After the component is replaced, the small and large rocker arms need to be reinstalled. The original hinge structure is time-consuming and laborious when installing the pin, which wastes a lot of time. The original pin shaft was difficult to align with the two pin holes on the large rocker arm and the small rocker arm during installation. This required repeated attempts to align them. Furthermore, according to the technical requirements for elevator assembly, the tapered locating recess on the pin shaft must be aligned with the threaded locating hole on the small rocker arm after the small and large rocker arms are assembled together to be considered a complete installation. However, once the pin shaft is installed, it is difficult to rotate it, making it hard for workers to align the tapered locating recess on the pin shaft with the threaded locating hole on the small rocker arm. This severely impacted the equipment's effective operating rate and increased the workload for workers during the installation of the small and large rocker arms. Utility Model Content

[0005] The purpose of this utility model is to provide a rocker arm installation fixture, a rocker arm assembly, and a packaging machine lifter, which can quickly meet the technical requirements for packaging machine lifter assembly, enable the rocker arm assembly to be installed in place, effectively shorten the maintenance time, improve the effective operating rate, and reduce the labor intensity of workers.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The rocker arm installation fixture includes:

[0008] A pin has a tapered positioning recess on its outer surface, and a tapered auxiliary positioning part is provided at one end of the pin. The tapered auxiliary positioning part is coaxial with the pin and the tip of the tapered auxiliary positioning part is provided outward along the axis. A control groove is provided at the other end of the pin.

[0009] A control component, one end of which is provided with a control protrusion, which is selectively placed within the control groove so that the control component and the pin rotate coaxially about the axis of the pin.

[0010] As an optional technical solution for the rocker arm installation fixture, the rocker arm installation fixture further includes a connector, and the control component and the pin are fixedly connected along the axial direction of the pin through the connector.

[0011] As an optional technical solution for rocker arm installation fixture, the control component has a through hole, and the pin shaft has a threaded hole at one end near the control groove. The through hole and the threaded hole are coaxially arranged. One end of the connector has a limiting part, and the other end of the connector has a threaded section. The threaded section can pass through the through hole until the limiting part abuts against the end of the control component away from the control protrusion, so that the threaded section extends from the end of the through hole near the control protrusion. The threaded section selectively screws into the threaded hole, so that the control component and the pin shaft are detachably connected.

[0012] As an optional technical solution for the rocker arm installation fixture, the control protrusion is configured in a straight line along the radial direction, and the control groove is correspondingly configured in a straight line along the radial direction, wherein the width of the control groove is greater than or equal to the width of the control protrusion.

[0013] As an optional technical solution for rocker arm installation fixtures, the outer surface of the control component is provided with an anti-slip surface.

[0014] As an optional technical solution for rocker arm mounting fixtures, the diameter of the control component is larger than the diameter of the pin.

[0015] As an optional technical solution for rocker arm installation fixtures, the inner wall of the conical positioning recess is coated with a warning color.

[0016] A rocker arm assembly includes a large rocker arm, a small rocker arm, and a positioning screw. The large rocker arm is provided with a placement groove, and the small rocker arm can be placed in the placement groove. Two first pin holes are coaxially formed on both sides of the placement groove. The small rocker arm is provided with a second pin hole and a threaded positioning hole. The second pin hole and the threaded positioning hole are perpendicularly connected. The rocker arm mounting fixture described in any of the above descriptions can be used. The pin can be inserted into the first pin hole and the second pin hole. The positioning screw can be selectively screwed into the threaded positioning hole so that the head of the positioning screw is coaxially inserted into the conical positioning recess.

[0017] As an optional technical solution for the rocker arm assembly, when the small rocker arm is placed in the placement groove, the distance between the outer side of the large rocker arm near the control groove and the threaded positioning hole along the axial direction of the first pin hole is equal to the distance between the end face of the pin near the control groove and the axis of the tapered positioning recess along the axial direction of the first pin hole.

[0018] Packaging machine lifter, including the rocker arm assembly as described in any of the above.

[0019] The beneficial effects of this utility model are:

[0020] The rocker arm mounting fixture provided by this utility model includes a pin and a control component. The outer surface of the pin has a tapered positioning recess, improving upon the original pin structure. A tapered auxiliary positioning part is provided at one end of the pin, coaxial with the pin and with its tip pointing outward along the axis. During pin installation, the pin holes on the large and small rocker arms can be aligned coaxially in one go through the tapered auxiliary positioning part, eliminating the need for multiple alignment attempts during installation. The other end of the pin has a control groove, and one end of the control component has a control protrusion. The control protrusion is selectively placed within the control groove, allowing the control component and the pin to rotate coaxially with the pin's axis. This facilitates the rotation of the pin after it is installed on the small and large rocker arms, making it easy to align the tapered positioning recess on the pin with the threaded positioning hole on the small rocker arm.

[0021] The rocker arm assembly provided by this utility model includes a large rocker arm, a small rocker arm, and a positioning screw. The large rocker arm is provided with a placement groove, and the small rocker arm can be placed in the placement groove. Two first pin holes are coaxially formed on both sides of the placement groove. The small rocker arm is provided with a second pin hole and a threaded positioning hole, and the second pin hole and the threaded positioning hole are vertically connected. This rocker arm assembly can use the aforementioned rocker arm mounting fixture. The pin can be inserted into the first pin hole and the second pin hole, and the positioning screw can be selectively screwed into the threaded positioning hole so that the head of the positioning screw is coaxially inserted into the conical positioning recess. This can quickly meet the technical requirements of packaging machine lifter assembly, allowing the rocker arm assembly to be installed in place.

[0022] The packaging machine lift provided by this utility model includes the aforementioned rocker arm assembly, which can effectively shorten the maintenance time, improve the effective operating rate, and also reduce the labor intensity of the workers. Attached Figure Description

[0023] Figure 1 This is an exploded view of the rocker arm mounting fixture and rocker arm assembly provided in a specific embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the control component of the rocker arm mounting fixture provided in a specific embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the pin structure of the rocker arm mounting fixture provided in a specific embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the working process of the rocker arm mounting fixture and rocker arm assembly provided in a specific embodiment of this utility model;

[0027] Figure 5 yes Figure 4 A sectional view.

[0028] In the picture:

[0029] 100. Large rocker arm; 101. Placement slot; 102. First pin hole;

[0030] 200. Small rocker arm; 201. Threaded positioning hole; 202. Second pin hole;

[0031] 300. Pin; 301. Tapered positioning recess; 302. Tapered auxiliary positioning part; 303. Control groove; 304. Threaded hole;

[0032] 400. Control component; 401. Control protrusion; 402. Through hole; 403. Anti-slip surface;

[0033] 500. Connector; 501. Limiting part; 502. Threaded section;

[0034] 600. Positioning screws. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] like Figures 1 to 5 As shown, this utility model discloses a rocker arm mounting fixture, a rocker arm assembly, and a packaging machine lifter. The packaging machine lifter includes a rocker arm assembly, and this rocker arm assembly can utilize this rocker arm mounting fixture to optimize the installation of the pin 300. The rocker arm assembly includes a large rocker arm 100, a small rocker arm 200, and a positioning screw 600. The large rocker arm 100 is provided with a placement groove 101, and the small rocker arm 200 can be placed in the placement groove 101. Two first pin holes 102 are coaxially formed on both sides of the placement groove 101, and the small rocker arm 200 is provided with a second pin hole 202. When assembling the large rocker arm 100 and the small rocker arm 200, the first pin holes 102 and the second pin holes 202 need to be coaxially aligned. The small rocker arm 200 is also provided with a threaded positioning hole 201, and the second pin hole 202 and the threaded positioning hole 201 are vertically connected. The pin 300 can be inserted into the first pin hole 102 and the second pin hole 202. Then, the positioning screw 600 can be selectively screwed into the threaded positioning hole 201 so that the head of the positioning screw 600 is coaxially inserted into the tapered positioning recess 301 on the outer side of the pin 300. This is to meet the assembly requirements of the packaging machine lifter on the rocker arm assembly.

[0040] Therefore, the rocker arm mounting fixture includes a pin 300 and a control component 400. First, the structure of the pin 300 is improved by providing a tapered auxiliary positioning part 302 at one end of the pin 300. The tapered auxiliary positioning part 302 is coaxial with the pin 300 and the tip of the tapered auxiliary positioning part 302 is set outward along the axis. When installing the pin 300, the first pin hole 102 and the second pin hole 202 on the large rocker arm 100 and the small rocker arm 200 can be aligned and coaxial at one time with the help of the tapered auxiliary positioning part 302, which can eliminate the need to try to align multiple times during installation. The other end of the pin 300 is provided with a control groove 303, and one end of the control component 400 is provided with a control protrusion 401. The control protrusion 401 is selectively placed in the control groove 303 so that the control component 400 and the pin 300 can rotate coaxially. This allows the pin 300 to be easily rotated after it is installed on the small rocker arm 200 and the large rocker arm 100. It also makes it easy to align the tapered positioning recess 301 on the pin 300 with the threaded positioning hole 201 on the small rocker arm 200. This can quickly meet the technical requirements for the assembly of the packaging machine lifter, so that the rocker arm assembly can be installed in place. This can effectively shorten the maintenance time, improve the effective operating rate, and reduce the labor intensity of the workers.

[0041] To further reduce the production and modification costs of the pin 300, an angled section can be cut directly at the original insertion front end of the pin 300 to form a tapered auxiliary positioning part 302. The specific shape of the tapered auxiliary positioning part 302 can be a frustum shape. This makes the structure of the pin 300 more stable. While ensuring that the installation of the pin 300 facilitates the coaxiality of the large rocker arm 100 and the small rocker arm 200, it is also safer to use and less likely to injure other parts or personnel.

[0042] Specifically, the control protrusion 401 is radially arranged in a straight line, and the control groove 303 is correspondingly radially arranged in a straight line. The width of the control groove 303 is greater than or equal to the width of the control protrusion 401. A simple mating structure is sufficient to connect the control component 400 and the pin 300 for synchronous rotation. Alternatively, a radially symmetrical control protrusion, such as a straight line, allows the control component 400 to rotate 180° and still engage with the pin 300. Or, multiple radially radiating control grooves 303 can be provided on the end face of the pin 300 to further facilitate rapid engagement of the control component 400 with the pin 300, improving the practicality of the rocker arm mounting fixture.

[0043] In this embodiment, the rocker arm mounting fixture also includes a connector 500. The control component 400 and the pin 300 can be fixedly connected along the axial direction of the pin 300 through the connector 500, thereby improving the structural stability of the rocker arm mounting fixture.

[0044] For example, the control member 400 has a through hole 402, and the pin 300 has a threaded hole 304 at one end near the control groove 303. The through hole 402 and the threaded hole 304 are coaxially arranged. One end of the connector 500 is provided with a limiting part 501, and the other end of the connector 500 is provided with a threaded section 502. The threaded section 502 can pass through the through hole 402 until the limiting part 501 abuts against the end of the control member 400 away from the control protrusion 401, so that the threaded section 502 extends out from the end of the through hole 402 near the control protrusion 401. The threaded section 502 can be selectively screwed into the threaded hole 304, so that the control member 400 and the pin 300 can be detachably connected. The connector 500 tightens the control member 400 to the pin 300. The limiting part 501 and the end face of the pin 300 clamp the control member 400, ensuring the stability of the plug-in structure, which in turn ensures the stability of the coaxial rotation with the pin 300.

[0045] Optionally, the operator can pre-install and fix the connector 500 and the control component 400, so that the rocker arm installation fixture can be inserted and removed together after the work is completed. When disassembling, the operator holds the control component 400 to limit the pin 300 from being twisted by force when the rocker arm installation fixture is disassembled.

[0046] In this embodiment, the outer side of the control component 400 is provided with an anti-slip surface 403. Specifically, anti-slip textures can be engraved on the outer side of the control component 400 to prevent the operator from slipping when rotating the control component 400.

[0047] Furthermore, when the small rocker arm 200 is placed in the placement groove 101, the distance between the outer side of the large rocker arm 100 near the control groove 303 and the threaded positioning hole 201 along the axial direction of the first pin hole 102 is equal to the distance between the end face of the pin 300 near the control groove 303 and the axis of the conical positioning recess 301 along the axial direction of the first pin hole 102. Therefore, when the pin 300 is aligned with the outer side of the large rocker arm 100, the position of the conical positioning recess 301 will be exactly on the axial direction of the threaded positioning hole 201. For this setting, the diameter of the control component 400 is limited to be larger than the diameter of the pin 300. During the process of the pin 300 pushing into the first pin hole 102 and the second pin hole 202, when the end face of the control component 400 abuts against the outer side of the large rocker arm 100, it can be proven that the end face of the pin 300 is flush with the outer wall of the large rocker arm 100. This setting further ensures the alignment constraint between the two, provides workers with a standardized operating procedure, and optimizes assembly efficiency and effectiveness.

[0048] For example, the inner wall of the conical positioning recess 301 is coated with a warning color, specifically red, so that the staff can observe whether the pin 300 is close to being installed in place through the threaded positioning hole 201 while the pin 300 is being twisted, thereby further improving assembly efficiency.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rocker arm mounting tool characterized by, include: A pin (300) has a tapered positioning recess (301) on its outer surface. One end of the pin (300) is provided with a tapered auxiliary positioning part (302), which is coaxial with the pin (300) and the tip of the tapered auxiliary positioning part (302) is provided outward along the axis. The other end of the pin (300) is provided with a control groove (303). A control element (400) is provided at one end with a control protrusion (401), which is selectively placed in the control groove (303) so that the control element (400) and the pin (300) rotate coaxially about the axis of the pin (300).

2. The rocker arm mounting tool of claim 1, wherein, The rocker arm mounting fixture also includes a connector (500), and the control component (400) and the pin (300) are fixedly connected along the axial direction of the pin (300) through the connector (500).

3. The rocker arm mounting tool of claim 2, wherein, The control component (400) has a through hole (402), and the pin (300) has a threaded hole (304) at one end near the control groove (303). The through hole (402) and the threaded hole (304) are coaxially arranged. One end of the connector (500) is provided with a limiting part (501), and the other end of the connector (500) is provided with a threaded section (502). The threaded section (502) can pass through the through hole (402) until the limiting part (501) abuts against the end of the control component (400) away from the control protrusion (401), so that the threaded section (502) extends out from the end of the through hole (402) near the control protrusion (401). The threaded section (502) can be selectively screwed into the threaded hole (304) so ​​that the control component (400) and the pin (300) can be detachably connected.

4. The rocker arm mounting tool of claim 1, wherein, The control protrusion (401) is radially arranged in a straight line, and the control groove (303) is correspondingly radially arranged in a straight line. The width of the control groove (303) is greater than or equal to the width of the control protrusion (401).

5. The rocker arm mounting tool of claim 1, wherein, The outer surface of the control component (400) is provided with an anti-slip surface (403).

6. The rocker arm mounting tool of claim 1, wherein, The diameter of the control element (400) is larger than the diameter of the pin (300).

7. The rocker arm mounting tool of any one of claims 1-6, wherein, The inner wall of the conical positioning recess (301) is coated with a warning color.

8. A rocker arm assembly, comprising a large rocker arm (100), a small rocker arm (200), and a positioning screw (600), wherein the large rocker arm (100) is provided with a placement groove (101), the small rocker arm (200) can be placed in the placement groove (101), two first pin holes (102) are coaxially formed on both sides of the placement groove (101), and the small rocker arm (200) is provided with a second pin hole (202) and a threaded positioning hole (201), wherein the second pin hole (202) and the threaded positioning hole (201) are vertically connected, characterized in that, The rocker arm mounting fixture as described in any one of claims 1-7 can be used, wherein the pin (300) can be inserted into the first pin hole (102) and the second pin hole (202), and the positioning screw (600) can be selectively screwed into the threaded positioning hole (201) so that the head of the positioning screw (600) is coaxially inserted into the tapered positioning recess (301).

9. The rocker arm assembly of claim 8, wherein, When the small rocker arm (200) is placed in the placement groove (101), the distance between the outer side of the large rocker arm (100) near the control groove (303) and the threaded positioning hole (201) along the axial direction of the first pin hole (102) is equal to the distance between the end face of the pin (300) near the control groove (303) and the axis of the tapered positioning recess (301) along the axial direction of the first pin hole (102).

10. A packaging machine lifter characterized by, Includes the rocker arm assembly as described in any one of claims 8 and 9.

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