Winding drum tensioning device and packaging machine

Abstract

The utility model belongs to the technical field of cigarette devices, and discloses a winding drum tensioning device and a packaging machine, the winding drum tensioning device comprises a drum body, a sliding assembly, a tensioning block, a bottom cover and a connector piece, the peripheral surface of the drum body is provided with a plurality of notches, the first end of the sliding assembly is in sliding sealing connection with the drum body, and a sealing cavity is formed by the first end of the sliding assembly and a drum bottom plate of the drum body; a plurality of slope grooves are formed in the peripheral side of the sliding assembly, inclined guide strips are arranged on the two side walls of the slope grooves in a protruding mode, and the sliding assembly is further provided with an air channel; the tensioning block is arranged in the slope groove in a sliding mode, sliding grooves matched with the inclined guide strips are formed in the two outer side walls of the tensioning block, and the tensioning block is inserted into the groove opening in a sliding mode; the bottom cover is hermetically mounted at a barrel opening of the barrel, and an elastic piece is arranged between the bottom cover and the second end of the sliding assembly; the connector piece penetrates through the bottom cover and is communicated with the air channel through a pipeline. The packaging machine comprises the winding drum tensioning device. When the winding drum tensioning device locks or loosens the winding drum, the operation is simple and convenient, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette rolling devices, in particular to a roll tensioning device and a packaging machine. Background Art

[0002] GD units are widely used in domestic cigarette factories. As the market continues to expand, the demand for GD machines in China continues to increase. When the wire drawing material of the GD machine is exhausted, the wire drawing reel needs to be replaced. The wire drawing reel tensioning device in the prior art includes a wire drawing reel support and a clamping cover. When replacing the wire drawing reel, one end of the wire drawing reel is installed on the support, and the wire drawing reel is clamped by manually cranking the center thread of the clamping cover. Manual operation is time-consuming and labor-intensive. When the equipment is running, the clamping cover needs to be manually shaken down and then manually cranked up when in use. Due to the long thread, the whole process takes about 5 minutes, and the operation is relatively time-consuming. The clamping cover will also become loose due to vibration, causing the wire drawing reel to fall off, resulting in wire misalignment and breakage, affecting the quality of the cigarette pack and the efficiency of the equipment.

[0003] Therefore, there is an urgent need for a roll tensioning device and a packaging machine to solve the above technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a roll tensioning device and a packaging machine, aiming to solve the problem that the existing tensioning device requires manual tensioning operation, which is labor-intensive, and the tensioning device is unreliable to use, which easily affects the quality of cigarette packs. The roll tensioning device and packaging machine can effectively reduce labor intensity, be reliable to use, and thus ensure the quality of cigarette packs and equipment efficiency.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A reel tensioning device, comprising:

[0007] A cylinder, wherein the outer peripheral surface of the cylinder is provided with a plurality of notches extending along the length direction of the cylinder and evenly distributed;

[0008] A sliding assembly is slidably disposed within the cylinder, a first end of the sliding assembly being slidably and sealingly connected to the cylinder and forming a sealed cavity with the cylinder bottom plate of the cylinder, a plurality of slope grooves corresponding one to one to the notches are provided on the outer circumference of the sliding assembly, oblique guide strips are protruding from both side walls of the slope grooves, and the sliding assembly is also provided with an air passage;

[0009] A plurality of tensioning blocks are provided, and the plurality of tensioning blocks correspond to the plurality of ramp grooves one by one. The tensioning blocks are slidably arranged in the ramp grooves, and both outer side walls of the tensioning blocks are provided with sliding grooves matching the inclined guide bars, and the tensioning blocks are slidably inserted in the slots and can move along the radial direction of the cylinder;

[0010] a bottom cover, sealingly mounted on the cylinder opening of the cylinder, wherein an elastic member is provided between the bottom cover and the second end of the sliding assembly;

[0011] A connector is provided through the bottom cover and communicated with the air passage through a pipeline.

[0012] Preferably, the sliding assembly includes a slider and a sealing end cover, the sealing end cover is detachably mounted on one end of the slider and is sealingly slidably connected to the cylinder, the ramp groove is arranged on the slider, a first air vent is provided at the center of the sealing end cover, and a second air vent is provided at the center of the slider, the first air vent and the second air vent are arranged opposite each other, and the first air vent and the second air vent form the air duct.

[0013] Preferably, the elastic member is a spring, and the spring is sleeved on the outside of the pipe.

[0014] Preferably, the slider is provided with a receiving groove for limiting the elastic member.

[0015] Preferably, the longitudinal section of the tensioning block is a right-angled trapezoid, the inclined groove passes through two opposite side surfaces of the slider, and the thickness of the slider is smaller than the height of the right-angled trapezoid.

[0016] Preferably, the bottom cover comprises a cylindrical base and a round plugging protrusion protruding from the cylindrical base, and the round plugging protrusion is sealingly installed on the barrel mouth.

[0017] Preferably, four notches are provided, and the four notches are evenly distributed along the circumference of the cylinder.

[0018] Preferably, the cylinder body includes a cylinder side plate and the cylinder bottom plate that are detachably connected, and a sealing ring is provided at the connection between the cylinder side plate and the cylinder bottom plate.

[0019] Preferably, the cylinder side plate and the cylinder bottom plate are connected by screws.

[0020] The present invention also provides a packaging machine, comprising a roll tensioning device, a pneumatic component and a mounting seat as described in any of the above schemes, wherein the pneumatic component and the roll tensioning device are both mounted on the mounting seat, and the pneumatic component is connected to the connector.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a reel tensioning device, wherein a sliding assembly and a tensioning block are disposed within a cylinder. During use, the external pneumatic component is opened, and gas is introduced into the airway through the joint component. The gas enters the sealed chamber through the airway. Under the action of the gas pressure, the sliding assembly overcomes the supporting force of the elastic component and moves along the axial direction of the cylinder toward the bottom cover. The tensioning block slides relatively within the inclined groove and moves radially within the notch of the cylinder. The multiple tensioning blocks approach each other, and the reel tensioning device is in a relaxed state. After the pneumatic component is closed, the sliding assembly moves toward the cylinder bottom plate under the action of the elastic component. The tensioning block slides relatively within the inclined groove and moves radially within the notch of the cylinder. The multiple tensioning blocks move away from each other, and the reel tensioning device is in a locked state. The reel tensioning device is easy to operate when locking or releasing the reel, reducing the labor intensity of the worker.

[0023] The present utility model also provides a packaging machine, including the above-mentioned roll tensioning device, pneumatic parts and mounting seat, the pneumatic parts and roll tensioning device are both installed on the mounting seat, the pneumatic parts are connected to the joint parts, the packaging machine can realize automatic locking and loosening of the roll, and the roll will not fall off due to vibration, effectively ensuring the quality of the cigarette pack and the efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the reel tensioning device provided by an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the assembly of the sliding assembly, the tensioning block and the bottom cover provided in an embodiment of the present utility model;

[0026] Figure 3 This is a structural diagram of a slider provided by an embodiment of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of a cylinder provided by an embodiment of the present utility model;

[0028] Figure 5 It is a structural schematic diagram of the tensioning block provided in an embodiment of the utility model.

[0029] In the picture:

[0030] 100, cylinder body; 110, cylinder bottom plate; 120, cylinder side plate; 121, notch;

[0031] 200, sliding assembly; 210, slider; 211, ramp groove; 2111, oblique guide bar; 212, receiving groove; 220, sealing end cap; 221, first vent hole; 222, air guide hole;

[0032] 300, tensioning block; 310, chute;

[0033] 400, bottom cover; 410, cylindrical base; 420, round plug boss;

[0034] 500, elastic parts;

[0035] 600. Connectors. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0037] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0040] This embodiment provides a roll tensioning device, which aims to solve the problem that the existing tensioning device requires manual operation to lock or loosen the roll, which is labor-intensive, and the tensioning device is unreliable to use, which easily affects the quality of the cigarette pack. The roll tensioning device and packaging machine can effectively reduce labor intensity and are reliable to use, thereby ensuring the quality of the cigarette pack and equipment efficiency.

[0041] See also Figure 1-Figure 5 The reel tensioning device includes a cylinder 100, a sliding assembly 200, a tensioning block 300, a bottom cover 400 and a joint member 600. The outer circumferential surface of the cylinder 100 is provided with a plurality of notches 121 extending along the length direction of the cylinder 100 and evenly distributed. The sliding assembly 200 is slidably arranged in the cylinder 100. The first end of the sliding assembly 200 is slidably and sealedly connected to the cylinder 100 and forms a sealed cavity with the cylinder bottom plate 110 of the cylinder 100. The outer circumferential side of the sliding assembly 200 is provided with a plurality of slope grooves 211 corresponding to the notches 121 one by one. The two side walls of the slope groove 211 are both protruding with inclined guide strips 2111. The sliding assembly 200 is also provided with an air duct; there are multiple tensioning blocks 300, and the multiple tensioning blocks 300 correspond one to one to the multiple ramp grooves 211. The tensioning block 300 is slidably arranged in the ramp groove 211, and the two outer side walls of the tensioning block 300 are provided with sliding grooves 310 matching the inclined guide bar 2111, and the tensioning block 300 is slidably inserted in the slot 121 and can move radially along the cylinder 100; the bottom cover 400 is sealed and installed on the cylinder mouth of the cylinder 100, and an elastic member 500 is provided between the bottom cover 400 and the second end of the sliding assembly 200; the connecting member 600 is passed through the bottom cover 400 and is connected to the air duct through a pipeline.

[0042] The above-mentioned reel tensioning device is provided with a sliding assembly 200 and a tensioning block 300 in the cylinder 100. When in use, the external pneumatic part is opened, and the pneumatic part introduces gas into the airway through the connector 600. The gas enters the sealed cavity through the airway. Under the action of the gas pressure, the sliding assembly 200 overcomes the supporting force of the elastic member 500 and moves along the axial direction of the cylinder 100 toward the bottom cover 400. The tensioning block 300 slides relatively in the ramp groove 211 and is locked in the notch 12. 1 along the radial direction of the cylinder 100, the multiple tensioning blocks 300 approach each other, and the reel tensioning device is in a relaxed state. After the pneumatic component is closed, the sliding assembly 200, under the action of the elastic member 500, moves toward the cylinder bottom plate 110 of the cylinder 100. The tensioning blocks 300 slide relatively within the inclined groove 211 and move radially within the notch 121 of the cylinder 100. The multiple tensioning blocks 300 move away from each other, and the reel tensioning device is in a locked state. This reel tensioning device is easy to operate when locking or loosening the reel, reducing the labor intensity of workers.

[0043] Optionally, the sliding assembly 200 includes a slider 210 and a sealing end cap 220. The sealing end cap 220 is removably mounted on one end of the slider 210 and is in sealed sliding connection with the cylinder 100. The ramp groove 211 is provided on the slider 210. A first vent 221 is provided at the center of the sealing end cap 220. The center of the slider 210 is provided with a second vent. The first vent 221 and the second vent are arranged opposite each other, and the first vent 221 and the second vent form an airway. The sealing end cap 220 is removably mounted on the slider 210 for easy assembly and disassembly. For example, an elastic buckle can be provided on the sealing end cap 220, and a slot matching the elastic buckle can be provided on the slider 210. The sealing end cap 220 and the slider 210 are connected by the elastic buckle and the slot. In this embodiment, the sealing end cap 220 includes a cover body and a sealing member. The cover body and the slider 210 are removably connected. The sealing member is provided on the outer peripheral side of the cover body and is in sliding and sealing connection with the cylinder 100.

[0044] Preferably, the slider 210 is provided with a receiving groove 212 for the position-limiting elastic member 500. One end of the elastic member 500 is positioned within the receiving groove 212, while the other end is connected to the bottom cover 400. The receiving groove 212 serves as a guide and limiter, preventing the elastic member 500 from shifting and improving operational reliability. In this embodiment, the elastic member 500 is configured as a spring, which is sleeved around the outside of the pipe. The spring is easy to manufacture, reducing processing costs.

[0045] See also Figure 1 and Figure 2 The bottom cover 400 includes a cylindrical base 410 and a round plug 420 protruding from the cylindrical base 410. The round plug 420 is sealed and installed at the barrel mouth. The bottom cover 400 is set as a stepped structure, which is convenient for sealing the barrel mouth and also easy to remove from the barrel mouth, thereby improving the efficiency of disassembly and assembly.

[0046] See also Figure 1 and Figure 4 The cylinder body 100 includes a detachably connected cylinder side plate 120 and a cylinder bottom plate 110. A sealing ring is provided at the connection between the cylinder side plate 120 and the cylinder bottom plate 110. For example, the cylinder side plate 120 and the cylinder bottom plate 110 are connected by screws. This arrangement is convenient to operate and the cylinder side plate 120 and the cylinder bottom plate 110 are reliably connected.

[0047] Optionally, the longitudinal cross-section of the tension block 300 is a right-angled trapezoid, with the ramp groove 211 extending through two opposing sides of the slider 210. The thickness of the slider 210 is less than the height of the right-angled trapezoid, ensuring sufficient contact and sliding distance for the tension block 300 within the ramp groove 211. In actual manufacturing, the thickness of the slider 210 can be adjusted as needed.

[0048] In this embodiment, four notches 121 are provided, and the four notches 121 are evenly distributed along the circumference of the cylinder 100. In other embodiments, the number of notches 121 can be set to other numbers, such as three or five, etc., as needed.

[0049] This embodiment further provides a packaging machine comprising the aforementioned roll tensioning device, a pneumatic component, and a mounting base. The pneumatic component and the roll tensioning device are both mounted on the mounting base, and the pneumatic component is in communication with a connector 600. In one possible implementation, the pneumatic component has both air supply and air extraction functions. After the pneumatic component supplies air into the airway, the roll tensioning device is relaxed, allowing the roll to be removed from the roll tensioning device. To tighten the roll, the roll is first placed on the roll tensioning device, and the pneumatic component extracts air from the airway and the sealing chamber, causing the multiple tensioning blocks 300 to move away from each other, thereby tightening the roll. Alternatively, the pneumatic element may only have an air supply function. The first end of the sliding assembly 200 is provided with a plurality of air guide holes 222, which correspond one-to-one with the plurality of ramp grooves 211. The diameter of the air guide holes 222 is smaller than the minimum diameter of the airway. When the air supply element is turned on, the air guide holes 222 can release some gas, but the gas remaining in the sealed cavity can still enable the sliding assembly 200 to overcome the supporting force of the elastic element 500. When the air supply element is closed, the remaining gas can escape through the notch 121. After escaping, the sliding assembly 200, under the action of the elastic element 500, moves toward the bottom plate 110 of the cylinder body 100, and the plurality of tensioning blocks 300 move away from each other. This packaging machine can automatically lock and release the roll, preventing the roll from falling due to vibration, effectively ensuring cigarette pack quality and equipment efficiency.

[0050] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The reel tensioning device is characterized by: include: A cylinder (100), wherein the outer peripheral surface of the cylinder (100) is provided with a plurality of notches (121) extending along the length direction of the cylinder (100) and evenly distributed; A sliding assembly (200) is slidably disposed in the cylinder (100), a first end of the sliding assembly (200) is slidably sealed with the cylinder (100), and forms a sealed cavity with the cylinder bottom plate (110) of the cylinder (100), a plurality of slope grooves (211) corresponding one-to-one to the notches (121) are provided on the outer peripheral side of the sliding assembly (200), and oblique guide strips (2111) are protruded from both side walls of the slope grooves (211), and the sliding assembly (200) is also provided with an air passage; A plurality of tensioning blocks (300) are provided, and the plurality of tensioning blocks (300) correspond to the plurality of ramp grooves (211) in a one-to-one manner. The tensioning blocks (300) are slidably arranged in the ramp grooves (211), and both outer side walls of the tensioning blocks (300) are provided with sliding grooves (310) matching the inclined guide strips (2111), and the tensioning blocks (300) are slidably inserted in the notches (121) and can move along the radial direction of the cylinder (100); A bottom cover (400) is sealingly mounted on the barrel opening of the barrel (100), and an elastic member (500) is provided between the bottom cover (400) and the second end of the sliding assembly (200); A connector (600) is provided through the bottom cover (400) and is connected to the air passage through a pipe.

2. The reel tensioning device according to claim 1, characterized in that: The sliding assembly (200) comprises a slider (210) and a sealing end cover (220). The sealing end cover (220) is detachably mounted on one end of the slider (210) and is sealingly and slidingly connected to the cylinder (100). The ramp groove (211) is provided on the slider (210). A first vent hole (221) is provided at the center of the sealing end cover (220). A second vent hole is provided at the center of the slider (210). The first vent hole (221) and the second vent hole are arranged opposite to each other. The first vent hole (221) and the second vent hole form the air passage.

3. The reel tensioning device according to claim 1, characterized in that: The elastic member (500) is a spring, and the spring is sleeved on the outside of the pipe.

4. The reel tensioning device according to claim 2, characterized in that: The slider (210) is provided with a receiving groove (212) for limiting the elastic member (500).

5. The reel tensioning device according to claim 2, characterized in that: The longitudinal section of the tensioning block (300) is a right-angled trapezoid, the slope groove (211) passes through two opposite side surfaces of the slider (210), and the thickness of the slider (210) is smaller than the height of the right-angled trapezoid.

6. The reel tensioning device according to claim 1, characterized in that: The bottom cover (400) comprises a cylindrical base (410) and a round blocking boss (420) protruding from the cylindrical base (410), wherein the round blocking boss (420) is sealingly mounted on the barrel opening.

7. The reel tensioning device according to claim 1, characterized in that: Four notches (121) are provided, and the four notches (121) are evenly distributed along the circumference of the cylinder (100).

8. The reel tensioning device according to claim 1, characterized in that: The cylinder body (100) comprises a cylinder side plate (120) and a cylinder bottom plate (110) which are detachably connected, and a sealing ring is provided at the connection between the cylinder side plate (120) and the cylinder bottom plate (110).

9. The reel tensioning device according to claim 8, characterized in that: The cylinder side plate (120) and the cylinder bottom plate (110) are connected via screws.

10. Packaging machine, characterized in that, It comprises the reel tensioning device according to any one of claims 1 to 9, a pneumatic component and a mounting seat, wherein the pneumatic component and the reel tensioning device are both mounted on the mounting seat, and the pneumatic component is connected to the connector (600).

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