Reciprocating drive and bag cutter

Abstract

The utility model belongs to tobacco production equipment technical field discloses a kind of reciprocating drive device and bag cutting machine.Reciprocating drive device includes first support, second support and bearing structure, and first support has first arc slot;Second support has second arc slot, and second arc slot and first arc slot form the channel of being provided with for light pole slidably passing through;Bearing structure includes first bearing structure, second bearing structure and third bearing structure, and first support has first inclined structure, and first bearing structure is correspondingly arranged with first inclined structure, and second support has second inclined structure and third inclined structure, and second bearing structure is correspondingly arranged with second inclined structure, and third bearing structure is correspondingly arranged with third inclined structure, when light pole rotates, the rotation surface of first bearing structure, second bearing structure and third bearing structure is not in same plane, and first support and second support are synchronously moved along the axial movement of light pole.Bag cutting machine includes above-mentioned reciprocating drive device.

Description

Technical Field

[0001] This utility model relates to the field of tobacco production equipment technology, and in particular to a reciprocating drive device and a bag cutting machine. Background Technology

[0002] Unpacking and cutting the bags are the first steps in tobacco processing. Their core function is to separate the purchased packaged tobacco leaves (or stems) from the packaging, providing qualified raw materials for subsequent processes such as rehydration, screening, and shredding. This is a key step in ensuring production continuity and the cleanliness of raw materials.

[0003] The unpacking process involves removing the outer packaging (such as rope, plastic film, or cardboard) of the tobacco leaves / stems, typically packaged in standard burlap sacks, cardboard boxes, or plastic film, with each sack weighing approximately 50 kg, using mechanical or manual methods. This exposes the tobacco sacks in preparation for the subsequent bag-cutting process. The bag-cutting process, using specialized cutting equipment, precisely cuts open the inner sealed packaging (such as polyethylene plastic bags or moisture-proof kraft paper) of the unpacked tobacco sacks, fully exposing the compressed tobacco leaves / stems inside. This facilitates the subsequent "loosening and rehydration" process, allowing for even humidification and heating of the raw materials.

[0004] In related technologies, bag cutters typically achieve reciprocating linear motion using rodless cylinders. However, rodless cylinders are expensive, require complex air circuits, and are prone to failure, resulting in a large workload for installation and maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a reciprocating drive device and a bag cutting machine, which aims to solve the problem that the existing bag cutting machine achieves reciprocating linear motion through a rodless cylinder, but the rodless cylinder is expensive and has a complex structure. The reciprocating drive device and bag cutting machine can achieve stable cutting of packaging bags, and has a simple structure and is easy to assemble and disassemble.

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

[0007] A reciprocating drive device, comprising:

[0008] The first support has a first arc-shaped groove;

[0009] The second support has a second arc-shaped groove, and the second arc-shaped groove and the first arc-shaped groove together form a passage through which the light rod can slide. The second support and the first support are detachably connected, and a cutting blade is provided on the side of the second support away from the first support.

[0010] The bearing structure includes a first bearing structure, a second bearing structure, and a third bearing structure. The first bearing structure is detachably installed on the first support, and both the second bearing structure and the third bearing structure are detachably installed on the second support.

[0011] The first support has a first inclined structure, and the first bearing structure is correspondingly arranged with the first inclined structure. The second support has a second inclined structure and a third inclined structure, and the second bearing structure is correspondingly arranged with the second inclined structure. The third bearing structure is correspondingly arranged with the third inclined structure. When the light rod rotates, the rotation surfaces of the first bearing structure, the second bearing structure and the third bearing structure are not in the same plane. The first support and the second support move synchronously along the axial direction of the light rod.

[0012] In some possible implementations, the first inclined structure includes two parallel first abutment surfaces, which are respectively disposed on two end faces of the first support along the axial direction of the guide rod. The second inclined structure includes two parallel second abutment surfaces, which are respectively disposed on two end faces of the second support along the axial direction of the guide rod. The third inclined structure includes two parallel third abutment surfaces, which are respectively disposed on two end faces of the second support along the axial direction of the guide rod. The first abutment surfaces, the second abutment surfaces, and the third abutment surfaces are not in the same plane.

[0013] In some possible implementations, the first bearing structure includes a first locking rod, two first bearings, and a first locking member. The first locking rod includes a first rod portion and a first cap portion disposed at one end of the first rod portion. The first locking member is screwed onto the other end of the first rod portion. The first rod portion passes through the first support. The two first bearings are respectively sleeved on both ends of the first rod portion and are respectively located on both sides of the first support. One first bearing is disposed between the first cap portion and the first support, and the other first bearing is disposed between the first locking member and the first support.

[0014] In some possible implementations, both the second bearing structure and the third bearing structure include a second locking rod, two second bearings, and a second locking member. The second locking rod includes a second rod portion and a second cap portion disposed at one end of the second rod portion. The second locking member is screwed onto the other end of the second rod portion. The second rod portion passes through the second support. The two second bearings are respectively sleeved on both ends of the second rod portion and are respectively located on both sides of the second support. One second bearing is disposed between the second cap portion and the second support, and the other second bearing is disposed between the second locking member and the second support.

[0015] In some possible implementations, the reciprocating drive device further includes an anti-rotation frame, which is detachably connected to the first support and is slidably sleeved on the guide rod.

[0016] In some possible implementations, the anti-rotation frame includes a connecting plate and two end plates. The two end plates are respectively disposed at both ends of the connecting plate and perpendicular to the connecting plate. The end of the end plate away from the connecting plate has a sleeve ring, which is slidably sleeved on the smooth rod. The connecting plate is detachably connected to the first support.

[0017] In some possible implementations, the cutting blade is detachably connected to the second support via a mounting base.

[0018] In some possible implementations, the mounting base includes a base plate and a guide ring, the base plate being detachably connected to the second support via a threaded connection, and the guide ring being disposed on the side of the base plate away from the second support for fixing the cutting blade.

[0019] In some possible implementations, the cutting blade includes a cylindrical portion and a cutting edge portion, the cylindrical portion being screwed into the guide ring, and the cutting edge portion being mounted on the side of the cylindrical portion away from the base plate.

[0020] A bag-cutting machine includes a drive unit, a guide rod, and a reciprocating drive device as described in any of the above embodiments, wherein the guide rod is pulsably connected to the drive unit and can slide through the insertion channel.

[0021] The beneficial effects of this utility model are:

[0022] The reciprocating drive device provided by this utility model, by setting a first inclined structure, a second inclined structure and a third inclined structure, a first bearing structure corresponding to the first inclined structure, a second bearing structure corresponding to the second inclined structure and a third bearing structure corresponding to the third inclined structure, when the guide rod rotates, the rotation surfaces of the first bearing structure, the second bearing structure and the third bearing structure are not in the same plane, forming a spiral-like structure. When the guide rod rotates, the friction force on the three bearing structures is converted into a thrust along the axis of the guide rod. The first support and the second support move synchronously along the axis of the guide rod. When the second support moves, it drives the cutting blade to move. The cutting blade cuts the outer packaging bag of the cigarette pack. The cutting blade moves stably, and the overall structure is simple and easy to assemble and disassemble.

[0023] The bag cutting machine provided by this utility model includes the above-mentioned reciprocating drive device. By using the above-mentioned reciprocating drive device, stable cutting of packaging bags can be achieved, and the structure is simple and easy to assemble and disassemble. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of the bag-cutting machine provided in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the first support and the anti-rotation frame provided in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the second support provided in this embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the anti-rotation frame provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the first bearing structure provided in this embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the second bearing structure provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the mounting base provided in an embodiment of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the cutting blade provided in this embodiment of the utility model.

[0032] In the picture:

[0033] 100, First support; 110, First arc groove; 200, Second support; 210, Second arc groove; 310, First bearing structure; 311, First locking rod; 312, First bearing; 313, First locking element; 320, Second bearing structure; 321, Second locking rod; 322, Second bearing; 323, Second locking element; 400, Anti-rotation frame; 410, Connecting plate; 420, End plate; 430, Sleeve ring; 500, Cutting blade; 510, Cylindrical part; 520, Blade part; 600, Mounting base; 610, Base plate; 620, Guide ring; 700, Threaded part; 800, Driving part; 900, Smooth rod. Detailed Implementation

[0034] 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, not the entire structure.

[0035] 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.

[0036] 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.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," 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.

[0038] like Figures 1 to 8As shown, this embodiment provides a reciprocating drive device, including a first support 100, a second support 200, and a bearing structure. The first support 100 has a first arc-shaped groove 110; the second support 200 has a second arc-shaped groove 210, the second arc-shaped groove 210 and the first arc-shaped groove 110 together form a passage through which a light rod 900 can slide. The second support 200 and the first support 100 are detachably connected, and a cutting blade 500 is provided on the side of the second support 200 away from the first support 100. The bearing structure includes a first bearing structure 310, a second bearing structure 320, and a third bearing structure. The first bearing structure 310 is detachably installed on the first support 100, and the second bearing structure 320 and the third bearing structure are both detachably installed on the second support. 200; wherein, the first support 100 has a first inclined structure (not shown in the figure), the first bearing structure 310 is correspondingly arranged with the first inclined structure, the second support 200 has a second inclined structure (not shown in the figure) and a third inclined structure (not shown in the figure), the second bearing structure 320 is correspondingly arranged with the second inclined structure, the third bearing structure is correspondingly arranged with the third inclined structure, when the smooth rod 900 rotates, the rotation surfaces of the first bearing structure 310, the second bearing structure 320 and the third bearing structure are not in the same plane, and the first support 100 and the second support 200 move synchronously along the axial direction of the smooth rod 900.

[0039] The reciprocating drive device provided in this embodiment, by setting a first inclined structure, a second inclined structure and a third inclined structure, with the first bearing structure 310 corresponding to the first inclined structure, the second bearing structure 320 corresponding to the second inclined structure and the third bearing structure corresponding to the third inclined structure, and the rotation surfaces of the first bearing structure 310, the second bearing structure 320 and the third bearing structure are not in the same plane, forming a spiral-like structure, when the guide rod 900 rotates, the frictional force on the three bearing structures is converted into a thrust along the axial direction of the guide rod 900, the first support 100 and the second support 200 move synchronously along the axial direction of the guide rod 900, and when the second support 200 moves, it drives the cutting blade 500 to move, and the cutting blade 500 cuts the outer packaging bag of the cigarette pack. The cutting blade 500 moves stably, and the overall structure is simple and easy to assemble and disassemble.

[0040] Optionally, the first inclined structure includes two parallel first abutment surfaces, which are respectively disposed on the two end faces of the first support 100 along the axial direction of the guide rod 900. The second inclined structure includes two parallel second abutment surfaces, which are respectively disposed on the two end faces of the second support 200 along the axial direction of the guide rod 900. The third inclined structure includes two parallel third abutment surfaces, which are respectively disposed on the two end faces of the second support 200 along the axial direction of the guide rod 900. The first, second, and third abutment surfaces are not in the same plane. When the guide rod 900 rotates, the surface of the first bearing structure 310 that contacts the first abutment surface is the rotating surface of the first bearing structure 310, the surface of the second bearing structure 320 that contacts the second abutment surface is the rotating surface of the second bearing structure 320, and the surface of the third bearing structure that contacts the third abutment surface is the rotating surface of the third bearing structure. The three rotating surfaces have different inclination directions, forming an approximate threaded structure.

[0041] In this embodiment, the first bearing structure 310 includes a first locking rod 311, two first bearings 312, and a first locking member 313. The first locking rod 311 includes a first rod portion and a first cap portion disposed at one end of the first rod portion. The first locking member 313 is screwed onto the other end of the first rod portion. The first rod portion passes through the first support 100. The two first bearings 312 are respectively sleeved on both ends of the first rod portion and are respectively located on both sides of the first support 100. One first bearing 312 is disposed between the first cap portion and the first support 100, and the other first bearing 312 is disposed between the first locking member 313 and the first support 100. During assembly, the two first bearings 312 respectively correspond to and fit with two mutually parallel first abutment surfaces, so that the surfaces of the first bearings 312 and the first abutment surfaces in contact form a rotational surface. The structure is simple and the assembly is convenient.

[0042] Optionally, both the second bearing structure 320 and the third bearing structure include a second locking rod 321, two second bearings 322, and a second locking member 323. The second locking rod 321 includes a second rod portion and a second cap portion disposed at one end of the second rod portion. The second locking member 323 is screwed onto the other end of the second rod portion. The second rod portion passes through the second support 200. The two second bearings 322 are respectively sleeved on both ends of the second rod portion and are respectively located on both sides of the second support 200. One second bearing 322 is disposed between the second cap portion and the second support 200, and the other second bearing 322 is disposed between the second locking member 323 and the second support 200. The two second bearings 322 of the second bearing structure 320 are respectively fitted with two parallel second abutment surfaces, so that the surfaces of the second bearings 322 and the second abutment surfaces of the second bearing structure 320 form a rotating surface, which is easy to assemble; the two second bearings 322 of the third bearing structure are respectively fitted with two parallel third abutment surfaces, so that the surfaces of the second bearings 322 and the third abutment surfaces of the third bearing structure form a rotating surface, which is easy to assemble.

[0043] In this embodiment, the reciprocating drive device further includes an anti-rotation frame 400, which is detachably connected to the first support 100 and slidably sleeved on the guide rod 900. By providing the anti-rotation frame 400, the first support 100 and the second support 200 are effectively prevented from rotating along the guide rod 900 when the guide rod 900 rotates, thereby improving the reliability of use.

[0044] Optionally, the anti-rotation frame 400 includes a connecting plate 410 and an end plate 420. Two end plates 420 are provided, each located at one end of the connecting plate 410 and perpendicular to it. The end of each end plate 420 away from the connecting plate 410 has a sleeve ring 430, which is slidably fitted onto the smooth rod 900. The connecting plate 410 is detachably connected to the first support 100. The slidable sleeve ring 430 onto the smooth rod 900 improves the coaxiality between the sleeve ring 430 and the smooth rod 900 and simplifies assembly.

[0045] In this embodiment, the cutting blade 500 is detachably connected to the second support 200 via the mounting base 600. This arrangement improves the ease of assembly and disassembly.

[0046] Furthermore, the mounting base 600 includes a base plate 610 and a guide ring 620. The base plate 610 is detachably connected to the second support 200 via a threaded component 700. The guide ring 620 is located on the side of the base plate 610 away from the second support 200 and is used to fix the cutting blade 500. The base plate 610 provides a stable foundation support for the guide ring 620, which can effectively disperse the vibration and stress generated by the cutting blade 500 during operation. The guide ring 620 specifically fixes the cutting blade 500, ensuring that the cutting blade 500 always maintains the preset position during the force-bearing cutting process, reducing cutting deviation caused by the loosening of the cutting blade 500.

[0047] Optionally, the cutting blade 500 includes a cylindrical portion 510 and a cutting edge portion 520. The cylindrical portion 510 is screwed into the guide ring 620, and the cutting edge portion 520 is mounted on the side of the cylindrical portion 510 away from the base plate 610. The cylindrical portion 510 can serve as a stable carrier for the cutting edge portion 520, evenly distributing the cutting force transmitted by the cutting edge portion 520 during operation and avoiding local stress concentration that could lead to carrier deformation or breakage. Furthermore, the cylindrical portion 510 is screwed into the guide ring 620, facilitating easy assembly and disassembly. The regular shape of the cylindrical portion 510 allows for precise matching with the guide ring 620 of the mounting base 600, ensuring high coaxiality of the cutting blade 500 after installation.

[0048] This embodiment also provides a bag cutting machine, including a drive component 800, a guide rod 900, and the aforementioned reciprocating drive device. The guide rod 900 is connected to the drive component 800 and can slide through the insertion channel. By using the aforementioned reciprocating drive device, stable cutting of packaging bags can be achieved, and the structure is simple and easy to assemble and disassemble.

[0049] For example, the drive unit 800, the guide rod 900 and the reciprocating drive device form a cutting unit. In use, four cutting units can be set around the cigarette pack to cut the four sides of the outer packaging bag of the cigarette pack, thereby improving the cutting efficiency.

[0050] 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 reciprocating drive device, characterized in that, include: The first support (100) has a first arc-shaped groove (110); The second support (200) has a second arc-shaped groove (210), the second arc-shaped groove (210) and the first arc-shaped groove (110) together form a passage through which the light supply rod (900) can slide. The second support (200) and the first support (100) are detachably connected. A cutting blade (500) is provided on the side of the second support (200) away from the first support (100). The bearing structure includes a first bearing structure (310), a second bearing structure (320) and a third bearing structure. The first bearing structure (310) is detachably installed on the first support (100), and the second bearing structure (320) and the third bearing structure are both detachably installed on the second support (200). The first support (100) has a first inclined structure, the first bearing structure (310) is correspondingly arranged with the first inclined structure, the second support (200) has a second inclined structure and a third inclined structure, the second bearing structure (320) is correspondingly arranged with the second inclined structure, and the third bearing structure is correspondingly arranged with the third inclined structure. When the light rod (900) rotates, the rotation surfaces of the first bearing structure (310), the second bearing structure (320) and the third bearing structure are not in the same plane, and the first support (100) and the second support (200) move synchronously along the axial direction of the light rod (900).

2. The reciprocating drive device according to claim 1, characterized in that, The first inclined structure includes two parallel first abutment surfaces, which are respectively disposed on the two end faces of the first support (100) along the axial direction of the guide rod (900). The second inclined structure includes two parallel second abutment surfaces, which are respectively disposed on the two end faces of the second support (200) along the axial direction of the guide rod (900). The third inclined structure includes two parallel third abutment surfaces, which are respectively disposed on the two end faces of the second support (200) along the axial direction of the guide rod (900). The first abutment surfaces, the second abutment surfaces, and the third abutment surfaces are not in the same plane.

3. The reciprocating drive device according to claim 2, characterized in that, The first bearing structure (310) includes a first locking rod (311), two first bearings (312) and a first locking member (313). The first locking rod (311) includes a first rod portion and a first cap portion disposed at one end of the first rod portion. The first locking member (313) is screwed onto the other end of the first rod portion. The first rod portion passes through the first support (100). The two first bearings (312) are respectively sleeved on both ends of the first rod portion and are respectively located on both sides of the first support (100). One first bearing (312) is disposed between the first cap portion and the first support (100), and the other first bearing (312) is disposed between the first locking member (313) and the first support (100).

4. The reciprocating drive device according to claim 2, characterized in that, Both the second bearing structure (320) and the third bearing structure include a second locking rod (321), two second bearings (322), and a second locking member (323). The second locking rod (321) includes a second rod portion and a second cap portion disposed at one end of the second rod portion. The second locking member (323) is screwed onto the other end of the second rod portion. The second rod portion passes through the second support (200). The two second bearings (322) are respectively sleeved on both ends of the second rod portion and are respectively located on both sides of the second support (200). One second bearing (322) is disposed between the second cap portion and the second support (200), and the other second bearing (322) is disposed between the second locking member (323) and the second support (200).

5. The reciprocating drive device according to claim 1, characterized in that, The reciprocating drive device further includes an anti-rotation frame (400), which is detachably connected to the first support (100) and is slidably sleeved on the guide rod (900).

6. The reciprocating drive device according to claim 5, characterized in that, The anti-rotation frame (400) includes a connecting plate (410) and an end plate (420). There are two end plates (420), which are respectively located at both ends of the connecting plate (410) and perpendicular to the connecting plate (410). The end of the end plate (420) away from the connecting plate (410) has a sleeve ring (430). The sleeve ring (430) is slidably sleeved on the smooth rod (900). The connecting plate (410) is detachably connected to the first support (100).

7. The reciprocating drive device according to claim 1, characterized in that, The cutting blade (500) is detachably connected to the second support (200) via a mounting base (600).

8. The reciprocating drive device according to claim 7, characterized in that, The mounting base (600) includes a base plate (610) and a guide ring (620). The base plate (610) is detachably connected to the second support (200) via a threaded component (700). The guide ring (620) is located on the side of the base plate (610) away from the second support (200) and is used to fix the cutting blade (500).

9. The reciprocating drive device according to claim 8, characterized in that, The cutting blade (500) includes a cylindrical portion (510) and a cutting edge portion (520). The cylindrical portion (510) is screwed into the guide ring (620), and the cutting edge portion (520) is mounted on the side of the cylindrical portion (510) away from the base plate (610).

10. A bag-cutting machine, characterized in that, It includes a drive member (800), a light rod (900), and a reciprocating drive device as described in any one of claims 1-9, wherein the light rod (900) is tractively connected to the drive member (800), and the light rod (900) is slidably passed through the through-channel.

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