A tobacco leaf clamping device
By combining the flexible cable and spring in the trough plate structure, the problem of tobacco leaf clamping devices loosening and falling off after moisture loss is solved, achieving tight clamping and convenient operation, reducing tobacco leaf loss and improving tobacco leaf processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN BAOSHAN ORIENTAL TOBACCO
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-31
AI Technical Summary
Existing tobacco leaf clamping devices are prone to loosening and falling off after the tobacco leaves lose moisture, resulting in tobacco leaf loss. Furthermore, the pin-type structure is time-consuming and labor-intensive, and the spring-loaded clamping device cannot adjust the clamping distance.
The structure employs a grooved plate composed of a first clamping member and a second clamping member that are relatively distributed. By cooperating with a flexible cable and a spring, the size of the clamping part is adjusted. The elasticity of the spring and the pulling effect of the flexible cable are used to adapt to changes in the thickness of the tobacco leaves and maintain a tight clamp.
It effectively prevents tobacco leaves from falling off, reduces losses, improves clamping efficiency, avoids tobacco leaf breakage, and ensures the quality and integrity of tobacco leaves during the curing process.
Smart Images
Figure CN224572209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tobacco processing, and in particular to a tobacco leaf clamping device. Background Technology
[0002] During tobacco processing, freshly harvested tobacco leaves generally undergo many steps such as dehydration, color change, and color fixation. In these steps, the freshly harvested tobacco leaves are hung up in rows using tobacco clips for processing.
[0003] In existing tobacco clamping devices, some use pins to insert into the tobacco leaves to prevent them from falling off. However, this method has drawbacks such as causing tobacco leaf breakage and the time and effort required to insert the pins. Other clamping devices use a tension spring to clamp two toothed clamping rods to hold the tobacco leaves. A connecting rod is provided between the upper and lower clamping rods, and the connecting rod is hinged to the upper and lower clamping rods. The other end of the upper or lower clamping rod is equipped with a spring, and the other end of the spring is equipped with a buckle for fitting onto the upper or lower clamping rod. This makes opening and closing convenient and allows the tobacco leaves to be easily laid on the clamping plate. However, as the moisture in the tobacco leaves decreases, the thickness of the tobacco stack gradually decreases. The end of the clamping rod connected by the connecting rod cannot be adjusted in distance. As the thickness of the tobacco stack decreases, the tobacco stack near the connecting rod is prone to falling off, resulting in tobacco leaf loss. Utility Model Content
[0004] The purpose of this utility model is to address the deficiencies of the existing technology by providing a tobacco leaf clamping device, which consists of a first clamping member and a second clamping member that are relatively distributed. Both of them are grooved plates with side openings, forming a clamping part for placing tobacco leaves. The two ends of the second clamping member are respectively connected to the first clamping member by flexible cables and springs. The size of the clamping part is adjusted by utilizing the elasticity of the spring and the pulling action of the flexible cable. The spacing at both ends can be flexibly adjusted.
[0005] To achieve the above objectives, the following technical solution is adopted: A tobacco leaf clamping device includes a first clamping member and a second clamping member distributed opposite to each other. Both are grooved plates with side openings. A clamping part is formed between the first clamping member and the second clamping member. The first clamping member has a wire-passing end plate at both ends. The second clamping member has flexible cables connected to both ends. The end of the flexible cable away from the second clamping member passes through the wire-passing end plate and extends into the first clamping member to connect to one end of a spring. The other end of the spring is connected to the first clamping member by a pin. The first clamping member is subjected to a pulling force at both ends by the flexible cable and the elastic member, so as to adjust the size of the clamping part.
[0006] As a further preferred embodiment, the grooved plate includes side plates located on both sides of the side opening and a bottom plate connecting the two side plates. The cross-section formed by the side plates and the bottom plate is U-shaped, and the side plates have a toothed structure on the side facing the clamping part to contact the tobacco leaves.
[0007] As a further preferred embodiment, the bottom plate of the grooved plate is provided with ventilation holes.
[0008] As a further preferred embodiment, the distance between the two side plates of the grooved plate corresponding to the first clamping member is greater than the distance between the two side plates of the grooved plate corresponding to the second clamping member, and the side openings of the first clamping member and the second clamping member are relatively distributed.
[0009] As a further preferred embodiment, the threading end plate is provided with a threading hole, and the end opening of the threading hole is rounded to contact and guide the flexible cable.
[0010] As a further preferred embodiment, a channel is formed inside the first clamping member, and one end of the flexible cable and the spring connected thereto are installed in the channel.
[0011] As a further preferred embodiment, the first clamping member has a plurality of pin holes, which are spaced apart along the axial direction of the first clamping member, and the pins engage with the pin holes.
[0012] As a further preferred embodiment, the pin is a cotter pin, the pin passes through the first clamping member, and the pin is located in the segment connecting spring within the channel.
[0013] As a further preferred embodiment, one end of the first flexible cable is connected to one side of the side opening of the second clamping member, and the flexible cables connected to both ends of the second clamping member correspond one-to-one with the threading end plates at both ends of the first clamping member.
[0014] As a further preferred embodiment, the first flexible cable is detachably connected to the second clamping member.
[0015] Compared with the prior art, the beneficial effects of this utility model are: To address the problem of loosening and detachment of tobacco leaves after moisture loss in current tobacco leaf holding devices, this invention consists of a first and a second clamping component, both of which are slotted plates with side openings. These components form a clamping section for holding the tobacco leaves. The two ends of the second clamping component are connected to the first clamping component via flexible cables and springs. The size of the clamping section is adjusted using the elasticity of the springs and the tension of the flexible cables. Both ends can flexibly adjust the spacing. When moisture loss occurs and the tobacco thickness decreases, the springs contract due to their elasticity, pulling the second clamping component closer to the first clamping component via the flexible cables. This reduces the size of the clamping section, ensuring a tight grip on the tobacco leaves and preventing them from falling off. When placing tobacco leaves, the first and second clamping components can be manually pulled apart, stretching the springs and expanding the clamping section for easier insertion. Releasing the springs tightens the grip, allowing the device to adapt to changes in tobacco thickness during moisture loss, maintaining a tight grip on the tobacco leaves and effectively preventing them from falling off, thus reducing tobacco leaf loss. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the tobacco leaf clamping device in an embodiment of the present invention.
[0017] Figure 2 for Figure 1 A schematic diagram of the cross-section at point AA.
[0018] Figure 3 This is a top view of the tobacco leaf clamping device in an embodiment of the present invention.
[0019] Figure 4 This is a schematic diagram of the end of the tobacco leaf clamping device in an embodiment of the present invention.
[0020] Labeling descriptions (in order of first appearance): 1. Pin; 2. First clamping element; 3. Clamping part; 4. Second clamping element; 5. Flexible cable; 6. Threading end plate; 7. Threading hole; 8. Groove plate; 9. Tobacco leaf; 10. Pin hole; 11. Spring; 12. Toothed structure; 13. Hook; 14. Vent hole. Detailed Implementation
[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.
[0022] When the existing tobacco leaf 9 clamping device adopts a pin-type structure, it will cause the tobacco leaf 9 to break, and the pin-insertion operation is time-consuming and laborious. Although the clamping device using spring 11 to clamp the toothed clamping rod is convenient to open and close, when the tobacco leaf 9 loses moisture and the thickness of the tobacco column decreases, the distance of the end of the clamping rod connected by the connecting rod cannot be adjusted, which makes the tobacco column near the connecting rod end easy to fall off, resulting in tobacco leaf 9 loss.
[0023] To address this, this embodiment provides a tobacco leaf clamping device, such as... Figures 1-4 As shown, it consists of a first clamping member 2 and a second clamping member 4 that are relatively distributed. Both are grooved plates 8 with side openings, forming a clamping part 3 for placing tobacco leaves 9. The two ends of the second clamping member 4 are connected to the first clamping member 2 by flexible cables 5 and springs 11 respectively. The size of the clamping part 3 is adjusted by the elasticity of the spring 11 and the pulling action of the flexible cable 5. The spacing at both ends can be flexibly adjusted to adapt to the thickness changes of the tobacco leaves 9 after dehydration and maintain stable clamping.
[0024] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the tobacco leaf clamping device consists of a first clamping member 2 and a second clamping member 4, which are distributed opposite to each other. Both are groove-shaped plates 8 with side openings. A clamping part 3 is formed between the first clamping member 2 and the second clamping member 4 for placing tobacco leaves 9. When placing tobacco leaves 9, multiple tobacco leaves 9 are stacked sequentially to form a tobacco stack. The end of the tobacco leaf 9 near the leaf stalk is clamped by the first clamping member 2 and the second clamping member 4.
[0025] The first clamping member 2 has wire-threading end plates 6 at both ends, and the second clamping member 4 has flexible cables 5 connected to both ends. After passing through the wire-threading end plates 6, the flexible cables 5 are connected to one end of the spring 11 inside the first clamping member 2. The other end of the spring 11 is fixed to the first clamping member 2 by a pin 1, so that the clamping device can adjust the size of the clamping part 3 through the cooperation of the flexible cables 5 and the spring 11.
[0026] The second clamping member 4 has flexible cables 5 connected to both ends. One end of the flexible cable 5 passes through the wire end plate 6 at one end of the first clamping member 2 and is connected to its corresponding spring 11. The other end of the flexible cable 5 passes through the wire end plate 6 at the other end of the first clamping member 2 and is connected to its corresponding spring 11.
[0027] like Figure 4 As shown, hooks 13 are installed at both ends of the second clamping member 4. One end of the flexible cable 5 is looped and sleeved on the end of the second clamping member 4 and hooked by the hooks 13, thereby constraining the position of the flexible cable 5 and preventing the flexible cable 5 from falling off the end of the second clamping member 4.
[0028] The size of the clamping part 3 is adjusted by utilizing the elasticity of the spring 11 and the pulling action of the flexible cable 5. When the tobacco leaf 9 loses moisture and the thickness of the tobacco stack decreases, the spring 11 will contract due to its elasticity, pulling the second clamping member 4 closer to the first clamping member 2 via the flexible cable 5, thereby reducing the size of the clamping part 3. This ensures that the clamping device can always tightly clamp the tobacco leaf 9 and prevent it from falling off. Conversely, when placing the tobacco leaf 9, the first clamping member 2 and the second clamping member 4 can be manually pulled apart, stretching the spring 11 and expanding the size of the clamping part 3 to facilitate the placement of the tobacco leaf 9. After releasing the spring 11, it contracts, thus clamping the tobacco leaf 9 tightly.
[0029] The adjustable clamping part 3 adapts to changes in tobacco leaf thickness during moisture loss, maintaining a tight grip on the tobacco leaves and effectively preventing them from falling off, thus reducing leaf loss. Compared to pin-type clamping devices, this eliminates the need for pin insertion, saving time and manpower, improving leaf clamping efficiency, and making the laying and clamping process more convenient and faster. It also avoids leaf breakage caused by pin insertion, helping to maintain leaf integrity and ensuring quality in subsequent dehydration, color changing, and color fixing processes, thereby increasing the yield of high-quality tobacco leaves.
[0030] like Figure 2 , Figure 3 As shown, the trough plate 8 includes side plates located on both sides of the side opening and a bottom plate connecting the two side plates. The cross-section formed by the side plates and the bottom plate is U-shaped. The side plate has a toothed structure 12 on the side facing the clamping part 3 to contact the tobacco leaf 9.
[0031] The side plate of the grooved plate 8 has a toothed structure 12 on the side facing the clamping part 3, which can increase the contact friction with the tobacco leaf 9. When the tobacco leaf 9 shrinks due to moisture loss, the toothed structure 12 can be embedded into the surface of the tobacco leaf 9 (non-destructive embedding). With the size adjustment of the clamping part 3, it can prevent the tobacco leaf 9 from sliding relative to each other during the clamping process. In particular, it can prevent the tobacco leaf 9 near the edge from falling off due to uneven distribution of clamping force, thus enhancing the anti-falling effect.
[0032] In this embodiment, the toothed structure 12 is a serrated structure with a V-shaped tip. In other optional embodiments, a semi-circular toothed structure 12 may also be used.
[0033] Ventilation holes 14 are provided on the bottom plate of the trough plate 8, providing a gas flow channel for the dehydration and discoloration stages of the tobacco leaf 9 during the curing process. In traditional clamping devices, the area where the tobacco leaf 9 contacts the bottom plate is prone to moisture residue due to poor ventilation, affecting the uniformity of curing. The ventilation holes 14 can accelerate the air circulation inside the clamping part 3, ensuring that all parts of the tobacco leaf 9 are heated and dehydrated evenly, improving the curing quality, and avoiding the risk of mold growth in the tobacco leaf 9 caused by localized dampness.
[0034] The distance between the two side plates of the first clamping member 2 corresponding to the grooved plate 8 is greater than the distance between the two side plates of the second clamping member 4 corresponding to the grooved plate 8. The side openings of the first clamping member 2 and the second clamping member 4 are distributed opposite to each other. The distance between the side plates of the first clamping member 2 is greater than that of the second clamping member 4, and the side openings are distributed opposite to each other, forming a "nested" clamping structure. This allows the second clamping member 4 to penetrate deeper into the grooved space of the first clamping member 2. When the size of the clamping part 3 is reduced, the overlap area between the two is larger, and the clamping force distribution is more uniform. This avoids the drawback of "one end tight, one end loose" in the traditional clamping rod structure, ensuring the overall stability of the smoke exhaust.
[0035] The end plate 6 has a threading hole 7, the end of which is rounded to contact and guide the flexible cable 5. This rounded end not only reduces frictional loss between the flexible cable 5 and the end plate 6, extending the service life of the flexible cable 5, but also ensures stable force direction of the flexible cable 5 during tensioning through smooth guidance. This allows the elastic potential energy of the spring 11 to be converted into clamping force more efficiently, avoiding fluctuations in clamping force caused by jamming of the flexible cable 5 and ensuring smooth adjustment.
[0036] The first clamping member 2 has a groove inside. One end of the flexible cable 5 and the spring 11 connected to it are installed in the groove. The groove inside the first clamping member 2 provides a closed installation space for the flexible cable 5 and the spring 11, preventing the flexible cable 5 and the spring 11 from being exposed and interfering with the tobacco leaf 9. It can prevent tobacco leaf 9 debris, moisture during the curing process, etc. from corroding the elastic components, and at the same time avoid local pressure damage caused by direct contact between the spring 11 and the tobacco leaf 9, thereby improving the durability of the device and the safety of clamping the tobacco leaf 9.
[0037] The first clamping member 2 has multiple pin holes 10, which are spaced upwards along the axial direction of the first clamping member 2. A pin 1 engages with each pin hole 10. The pin 1 is a cotter pin, penetrating the first clamping member 2. The segment of the pin 1 located within a groove connects to the spring 11. The multiple axially distributed pin holes 10 allow adjustment of the preload of the spring 11 according to the initial thickness of the tobacco leaf 9, adapting to the clamping requirements of different varieties and moisture contents of tobacco leaves 9. The through-type connection of the cotter pin ensures the firmness of the spring 11 while facilitating disassembly and adjustment, solving the problem that traditional fixed supports cannot adapt to diverse clamping scenarios.
[0038] One end of the first flexible cable 5 is connected to the side opening of the second clamping member 4. The flexible cables 5 connected to both ends of the second clamping member 4 correspond one-to-one with the wire-passing end plates 6 at both ends of the first clamping member 2. The first flexible cable 5 and the second clamping member 4 are detachably connected. Figure 4 As shown, the connection is made by hooking with hook 13, which facilitates the individual replacement of worn flexible cable 5 or second clamping part 4, reducing maintenance costs. At the same time, during the laying of tobacco leaves 9, one side of the flexible cable 5 can be temporarily removed to adjust the position of the tobacco exhaust more flexibly and improve the convenience of operation.
[0039] The toothed structure 12, in conjunction with the adjustable clamping part 3, provides dual protection through dynamic clamping and anti-slip fixation. The vent 14, combined with the U-shaped channel plate 8, creates an efficient ventilation path within the enclosed clamping space. The nested clamping components, working in tandem with the guiding wire hole 7, ensure uniform and stable force transmission. Elastic adjustment accommodates variations in the smoke exhaust thickness, while also compensating for any shortcomings in the basic structure's detailed functions.
[0040] The multi-hole adjustment and detachable connection allow the device to adapt to tobacco ducts with a thickness of 3-10cm, meeting the processing needs of tobacco leaves from different production areas.
[0041] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.
Claims
1. A tobacco leaf clamping device, characterized by, The device includes a first clamping member and a second clamping member that are relatively distributed. Both are slotted plates with side openings. A clamping part is formed between the first clamping member and the second clamping member. The first clamping member has a wire-passing end plate at both ends. The second clamping member has a flexible cable connected to both ends. The end of the flexible cable away from the second clamping member passes through the wire-passing end plate and extends into the first clamping member to connect to one end of a spring. The other end of the spring is connected to the first clamping member by a pin. This allows the two ends of the first clamping member to be pulled by the flexible cable and the elastic member to adjust the size of the clamping part.
2. The tobacco leaf clamp of claim 1, wherein, The grooved plate includes side plates located on both sides of the side opening and a bottom plate connecting the two side plates. The cross-section formed by the side plates and the bottom plate is U-shaped. The side plate has a toothed structure on the side facing the clamping part to contact the tobacco leaf.
3. The tobacco leaf clamping device as described in claim 2, characterized in that, The bottom plate of the grooved plate has ventilation holes.
4. The tobacco leaf clamp of claim 2 or 3, wherein, The distance between the two side plates of the first clamping member corresponding to the groove plate is greater than the distance between the two side plates of the second clamping member corresponding to the groove plate, and the side openings of the first clamping member and the second clamping member are relatively distributed.
5. The tobacco leaf clamp of claim 1, wherein, The end plate has a threading hole with a rounded end to contact and guide the flexible cable.
6. The tobacco leaf clamp of claim 1, wherein, The first clamping member has a groove inside, and one end of the flexible cable and the spring connected to it are installed in the groove.
7. The tobacco leaf clamp of claim 6, wherein, The first clamping member has multiple pin holes, which are spaced upward along the axial direction of the first clamping member, and the pins engage with the pin holes.
8. The tobacco leaf clamp of claim 6 or 7, wherein, The pin is a cotter pin, which passes through the first clamping member, and the segment of the pin located in the channel is connected to the spring.
9. The tobacco leaf clamp of claim 1, wherein, One end of the flexible cable is connected to the side opening of the second clamping member, and the flexible cables connected to both ends of the second clamping member correspond one-to-one with the wire-passing end plates at both ends of the first clamping member.
10. The tobacco leaf clamp of claim 9, wherein, The flexible cable is detachably connected to the second clamping member.