Clamping device

Abstract

The utility model belongs to the field of modern tobacco agricultural machinery, and particularly relates to a clamping device which comprises a driver, a first connecting rod, a second connecting rod, a fixed claw and a movable claw, a telescopic shaft of the driver is connected to the movable claw, the two ends of the first connecting rod are rotatably connected to the driver and the second connecting rod respectively, and the end of the second connecting rod is fixedly connected to the fixed claw; the movable claw and the fixed claw are rotatably connected through a pin shaft; when the driver extends, the fixed claw deflects inwards and gets close to the movable claw so that the fixed claw can be folded and clamp the tobacco rod. When the driver extends, the fixed claw deflects outwards and is far away from the movable claw, so that the cigarette rod can be opened and released; the fixing claw is of a flexible structure so that the fixing claw can deform when clamping the tobacco rod. Therefore, under the condition that the clamping device can effectively clamp the tobacco stem, damage to the tobacco stem is reduced, and the adaptability to the tobacco stem is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of modern tobacco agricultural machinery, and in particular, to a clamping device. Background Art

[0002] During the process of tobacco leaves being braided into rods, the tobacco leaves need to be circulated through a clamping device to ensure the efficiency of the braiding.

[0003] A Chinese utility model patent with application number CN202410082992.0 discloses an efficient braiding device for tobacco leaves, which clamps tobacco leaves from a conveying device to a clamping piece through a clamping device, and presses the tobacco leaves on the clamping piece to a hanging rod, thereby realizing the loading and unloading of materials. Specifically, the clamping device includes: a cylinder having an air path connected to an air source; a telescopic claw connected to a telescopic rod of the cylinder; and a rotating claw, one end of which is rotatably connected to the telescopic claw through a pin, and the other end is rotatably connected to the housing portion of the cylinder through a connecting rod group to form a connecting rod mechanism. Among them, when the rack moves along the lower stop switch toward the upper stop switch, the cylinder extends to open the telescopic claw relative to the rotating claw, and when the rack moves from the upper stop switch to the lower stop switch, the cylinder retracts to bring the telescopic claw closer to the rotating claw.

[0004] However, in this patent, both the telescopic claw and the fixed claw are fixed structures, so the protection of the cigarette rod is achieved by putting a latex sleeve on the telescopic claw and the fixed claw. However, in actual operation, the latex sleeve is easy to fall off, and after clamping for a long time, the liquid on the cigarette rod will adhere to the latex sleeve, thereby hardening and reducing the clamping effect. In addition, when the diameter of the cigarette rod is large, the clamping effect can only be guaranteed by increasing the clamping force, but the adaptability to the cigarette rod is poor. If the clamping force is large, it is easy to clamp the cigarette rod; if the clamping force is small, it is easy to clamp the cigarette rod unstably.

[0005] Based on this, a more reasonable solution needs to be provided to reduce damage to the cigarette rod while effectively clamping the cigarette rod. Utility Model Content

[0006] The purpose of the present disclosure is to provide a clamping device that can reduce damage to the cigarette rod while effectively clamping the cigarette rod and improve the adaptability to the cigarette rod.

[0007] In order to achieve the above-mentioned purpose, the present disclosure provides a clamping device, comprising a driver, a first connecting rod, a second connecting rod, a fixed claw and a movable claw, wherein the telescopic shaft of the driver is connected to the movable claw, the two ends of the first connecting rod are rotatably connected to the driver and the second connecting rod respectively, and the end of the second connecting rod is fixedly connected to the fixed claw; the movable claw and the fixed claw are rotatably connected via a pin shaft;

[0008] When the actuator is extended, the first link is unfolded relative to the second link, and the fixed claw is deflected inwardly and close to the movable claw, so as to be able to close and clamp the cigarette rod; when the actuator is retracted, the first link is folded relative to the second link, and the fixed claw is deflected outwardly and away from the movable claw, so as to be able to open and release the cigarette rod;

[0009] Wherein, the fixing claw is configured as a flexible structure so as to be able to deform when clamping the cigarette rod.

[0010] In a possible design, the fixing claw includes a base, an inner wing plate, an outer wing plate and an end plate, wherein the inner wing plate and the outer wing plate are respectively arranged on both sides of the base, and ends of the inner wing plate and the outer wing plate are respectively connected to the end plate;

[0011] The inner wing plate and the outer wing plate are arranged at an interval, and the distance between the inner wing plate and the outer wing plate gradually decreases in the direction away from the base.

[0012] In a possible design, the distance between the inner wing panel and the outer wing panel is formed as a buffer zone;

[0013] The fixing claw further includes a buffer plate, which is provided in a plurality of pieces and arranged in the buffer zone, and two ends of the buffer plate are respectively connected to the inner wing plate and the outer wing plate, and adjacent buffer plates are arranged at intervals.

[0014] In a possible design, the buffer plate includes a thickened section and a connecting section, and the connecting section is configured into two sections and respectively disposed at both ends of the thickened section; wherein the thickness of the thickened section is greater than the thickness of the connecting section, and the thickened section and the connecting section are integrally formed.

[0015] In a possible design, the base, inner wing panels, outer wing panels and end panels are integrally formed.

[0016] In a possible design, the contact surface of the inner wing plate is provided with a plurality of protrusions arranged in an array.

[0017] In a possible design, the movable claw is S-shaped, so that after the fixed claw and the movable claw are closed, a gap area is formed in the inner area between the two.

[0018] In a possible design, the movable claw is made of a hard material, and a flexible sleeve is provided on the movable claw.

[0019] The movable claw is directly connected to the telescopic shaft of the driver to ensure precise control of the movement of the movable claw. The rotatable connection between the first connecting rod and the second connecting rod forms a linkage structure similar to the connecting rod assembly, so that the movable claw and the fixed claw can work together. Among them, the flexible structural design based on the fixed claw can allow moderate deformation when clamping cigarette rods of different diameters or shapes, thereby reducing damage to the cigarette rod. In addition, this allows the fixed claw and the movable claw to better adapt to cigarette rods of different sizes when clamping materials, increasing the flexibility of their application. In this way, the opening and closing action of the movable claw can be controlled by the driver to realize automatic clamping and release of the cigarette rod, which is beneficial to ensure stable and reliable turnover of the cigarette rod, that is, the cigarette rod is turned around to the braiding position, and the braiding is carried out under the joint action of components such as the hook needle and the braiding needle, and the cigarette rod is turned around to the unloading device after the braiding is completed, thereby improving the overall braiding efficiency.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of a clamping device provided by the present disclosure in one embodiment;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure of part A in the middle;

[0024] Figure 3 is a schematic side view of the structure of a clamping device provided by the present disclosure in one embodiment;

[0025] Figure 4 is a schematic side view of the structure of the clamping device provided by the present disclosure in one embodiment, wherein the fixing claw is deformed under pressure;

[0026] Figure 5 It is a schematic side view of the structure of the clamping device provided by the present invention in one embodiment.

[0027] Description of Reference Numerals

[0028] 1-driver, 2-first connecting rod, 3-second connecting rod, 4-fixed claw, 41-base, 42-inner wing plate, 43-outer wing plate, 44-end plate, 45-buffer plate, 5-movable claw. DETAILED DESCRIPTION

[0029] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0030] According to a specific embodiment of the present disclosure, a clamping device is provided, which can also be applied to the Chinese utility model patent with application number CN202410082992.0 and the name of a high-efficiency braiding device for tobacco leaves. Figures 1 to 5 One specific embodiment is shown.

[0031] See also Figures 1 to 5 As shown, the clamping device includes a driver 1, a first connecting rod 2, a second connecting rod 3, a fixed claw 4 and a movable claw 5, the telescopic shaft of the driver 1 is connected to the movable claw 5, the two ends of the first connecting rod 2 are rotatably connected to the driver 1 and the second connecting rod 3 respectively, and the end of the second connecting rod 3 is fixedly connected to the fixed claw 4; the movable claw 5 and the fixed claw 4 are rotatably connected through a pin shaft; when the driver 1 is extended, the first connecting rod is unfolded relative to the second connecting rod, and the fixed claw 4 is deflected inwardly and approaches the movable claw 5 so as to be able to close and clamp the cigarette rod; when the driver 1 is retracted, the first connecting rod is folded relative to the second connecting rod, and the fixed claw 4 is deflected outwardly and away from the movable claw 5 so as to be able to open and release the cigarette rod; wherein, the fixed claw 4 is configured as a flexible structure so as to be able to deform when clamping the cigarette rod.

[0032] The movable claw 5 is directly connected to the telescopic shaft of the driver 1, ensuring precise control of the movement of the movable claw 5. The rotatable connection between the first connecting rod 2 and the second connecting rod 3 forms a linkage structure similar to a connecting rod assembly, so that the movable claw 5 and the fixed claw 4 can work together. Among them, based on the flexible structural design of the fixed claw 4, moderate deformation can be allowed when clamping cigarette rods of different diameters or shapes, thereby reducing damage to the cigarette rod. In addition, this allows the fixed claw 4 and the movable claw 5 to better adapt to cigarette rods of different sizes when clamping materials, increasing the flexibility of their application. In this way, the opening and closing action of the movable claw 5 can be controlled by the driver 1 to realize automatic clamping and release of the cigarette rod, which is beneficial to ensure stable and reliable turnover of the cigarette rod, that is, the cigarette rod is turned around to the braiding position, and the braiding is carried out under the joint action of components such as the hook needle and the braiding needle, and the cigarette rod is turned around to the unloading device after the braiding is completed, thereby improving the overall braiding efficiency.

[0033] Among them, it should be explained that the "first link unfolds relative to the second link" and "the first link folds relative to the second link" in the text is based on the case where the first link is rotatably connected to the second link. When the second link is subjected to external force, it can move with its rotation center with the first link as a fulcrum, thereby changing the folding angle between the first link and the second link, resulting in the effects of "unfolding" and "folding".

[0034] In an embodiment provided by the present disclosure, the fixing claw 4 includes a base 41, an inner wing plate 42, an outer wing plate 43 and an end plate 44, wherein the inner wing plate 42 and the outer wing plate 43 are respectively arranged on both sides of the base 41, and the ends of the inner wing plate 42 and the outer wing plate 43 are respectively connected to the end plate 44; wherein the inner wing plate 42 and the outer wing plate 43 are arranged at intervals, and the interval between the two gradually decreases in the direction away from the base 41. Based on the structural design of the fixing claw 4, the base 41, the inner wing plate 42, the outer wing plate 43 and the end plate 44 can jointly form a stable structure, which can gradually deform the inner wing plate 42 and the outer wing plate 43 when compressed, thereby providing a progressive clamping force, which helps to evenly distribute the force when clamping the cigarette rod, thereby avoiding sharp clamping of the cigarette rod and reducing the damage to the cigarette rod during the clamping process. At the same time, it can also increase the contact area between the inner wing plate 42 and the cigarette rod, thereby stably clamping the cigarette rod.

[0035] In an embodiment provided by the present disclosure, the spacing between the inner wing plate 42 and the outer wing plate 43 forms a buffer zone; the fixed claw 4 further includes a buffer plate 45, which is provided in multiple pieces and arranged in the buffer zone, and the two ends of the buffer plate 45 are respectively connected to the inner wing plate 42 and the outer wing plate 43, and adjacent buffer plates 45 are arranged at intervals. The arrangement of the buffer plate 45 can strengthen the connection between the inner wing plate 42 and the outer wing plate 43, and provide additional support, which is beneficial to strengthening the clamping force, so that the fixed claw 4 is more stable when clamping the cigarette rod.

[0036] The interval arrangement of the buffer plates 45 makes the clamping force more evenly distributed, improves the stability of the clamped cigarette rod and reduces the pressure on the cigarette rod; and can absorb the impact force during the clamping process, which helps to protect the cigarette rod from hard damage and reduce damage to the cigarette rod and the clamping device itself, and is particularly suitable for clamping fragile or irregularly shaped cigarette rods. The design of multiple buffer plates 45 allows the fixed claws 4 to gradually deform during the clamping process, thereby better adapting to cigarette rods of different sizes and shapes, and increasing the versatility and flexibility of the clamping device.

[0037] In an embodiment provided by the present disclosure, the buffer plate 45 includes a thickened section and a connecting section, and the connecting section is configured as two sections and respectively arranged at both ends of the thickened section; wherein the thickness of the thickened section is greater than the thickness of the connecting section, and the thickened section and the connecting section are integrally formed. This design not only enables the buffer plate 45 to have a certain deformation ability, but also has a certain bending strength, thereby providing a stable supporting force in the process of clamping the cigarette rod, and reducing the pressure and damage to the cigarette rod through its deformation.

[0038] In one embodiment provided by the present disclosure, the base 41, the inner wing plate 42, the outer wing plate 43 and the end plate 44 are integrally formed. The integrally formed design provides higher structural strength and stability, reduces connection points and potential weaknesses. At the same time, it also makes the integrally formed fixed claw 4 more durable and able to withstand long-term repeated use and high-load operation. In addition, it can also reduce shape and position errors, ensure that it can accurately match the movable claw 5, and improve the accuracy and consistency of the clamping action.

[0039] Specifically, the fixing claw 4 is made of plastic material and is integrally molded and cast, so that the fixing claw 4 obtained in this way has a relatively stable connection relationship and can also ensure the connection strength between different components.

[0040] In one embodiment provided by the present disclosure, a plurality of protrusions arranged in an array are provided on the contact surface of the inner wing plate 42. Based on the design of the protrusions, the friction between the inner wing plate 42 and the cigarette rod can be increased to prevent the cigarette rod from slipping during the rotation process, thereby achieving a continuous and reliable rotation of the cigarette rod.

[0041] In an embodiment provided by the present disclosure, the movable claw 5 is S-shaped, so that after the fixed claw 4 and the movable claw 5 are closed, a gap area is formed in the inner area between the two, which can avoid interference and facilitate the smooth opening and closing of the movable claw 5 and the fixed claw 4, thereby achieving effective clamping and release of the cigarette rod. In addition, the shear force acting on the cigarette rod can be reduced to a certain extent, reducing damage to the cigarette rod.

[0042] In an embodiment provided by the present disclosure, the movable claw 5 is made of a hard material, which can ensure the strength of the movable claw 5 and is beneficial for firmly clamping the material. A flexible sleeve is provided on the movable claw 5 to provide additional protection for the movable claw 5 and reduce damage to the cigarette rod through its flexible deformation.

[0043] It should be noted that in the present disclosure, the movable claw 5 is made of metal material, specifically stainless steel, so that its strength can be guaranteed. The flexible sleeve is provided as a rubber sleeve, and the rubber sleeve is provided on the movable claw 5, so that the movable claw 5 can be protected while ensuring the clamping effect, and the damage to the cigarette rod can be reduced.

[0044] In the present disclosure, the driver 1 can be configured as any suitable linear drive mechanism such as a pneumatic cylinder, a hydraulic cylinder, a linear module, etc.

[0045] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

Claims

1. A clamping device, characterized in that: The clamping device comprises a driver, a first connecting rod, a second connecting rod, a fixed claw and a movable claw, wherein the telescopic shaft of the driver is connected to the movable claw, the two ends of the first connecting rod are rotatably connected to the driver and the second connecting rod respectively, and the end of the second connecting rod is fixedly connected to the fixed claw; the movable claw and the fixed claw are rotatably connected via a pin shaft; When the driver is extended, the first connecting rod is expanded relative to the second connecting rod, and the fixed claw is deflected inward and close to the movable claw, so as to be able to close and clamp the cigarette rod; When the driver retracts, the first link is folded relative to the second link, and the fixed claw is deflected outward and away from the movable claw, so as to be able to open and release the cigarette rod; Wherein, the fixing claw is configured as a flexible structure so as to be able to deform when clamping the cigarette rod.

2. The clamping device according to claim 1, characterized in that: The fixing claw comprises a base, an inner wing plate, an outer wing plate and an end plate, wherein the inner wing plate and the outer wing plate are respectively arranged on both sides of the base, and the ends of the inner wing plate and the outer wing plate are respectively connected to the end plates; The inner wing plate and the outer wing plate are arranged at an interval, and the distance between the inner wing plate and the outer wing plate gradually decreases in the direction away from the base.

3. The clamping device according to claim 2, characterized in that: The spacing between the inner wing plate and the outer wing plate forms a buffer zone; The fixing claw further includes a buffer plate, which is provided in a plurality of pieces and arranged in the buffer zone, and two ends of the buffer plate are respectively connected to the inner wing plate and the outer wing plate, and adjacent buffer plates are arranged at intervals.

4. The clamping device according to claim 3, characterized in that: The buffer plate includes a thickening section and a connecting section, wherein the connecting section is configured into two sections and respectively arranged at two ends of the thickening section; wherein the thickness of the thickening section is greater than the thickness of the connecting section, and the thickening section and the connecting section are integrally formed.

5. The clamping device according to claim 2, characterized in that: The base, inner wing plate, outer wing plate and end plate are integrally formed.

6. The clamping device according to claim 2, characterized in that: The contact surface of the inner wing plate is provided with a plurality of protrusions arranged in an array.

7. The clamping device according to any one of claims 1 to 6, characterized in that: The movable claw is in an S shape, so that after the fixed claw and the movable claw are closed, a gap area is formed in the inner area between the two.

8. The clamping device according to any one of claims 1 to 6, characterized in that: The movable claw is made of hard material, and a flexible sleeve is sleeved on the movable claw.

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