Conveyor belt unloading buffer device

Abstract

The utility model belongs to the field of tobacco leaf processing equipment in the cigarette industry, and particularly relates to a conveying belt discharging buffering device. The device comprises a side mounting plate, a buffer springback assembly, a switching mechanism, a rotating shaft and rotating rod assembly, a buffer supporting plate and a bearing seat assembly. A spring in the buffer springback assembly serves as a core buffer element, the initial compression amount is adjusted through an adjusting nut, and control over the buffer strength is achieved. When cut tobacco blocks fall off from the belt conveyor, the buffering supporting plate receives the tobacco blocks and rotates around the rotating shaft, impact force is transmitted to the spring through the switching mechanism and the rotating shaft and rotating rod assembly, the spring is compressed and absorbs the impact force, and the tobacco blocks are prevented from directly impacting the vibrating conveyor to cause tobacco leaf breakage. And after the tobacco blocks fall into the vibrating conveyor, the spring rebounds, and the buffer supporting plate resets, so that the next tobacco block can be buffered. According to the utility model, the tobacco leaf breakage rate is effectively reduced, the cigarette quality is improved, the waste of raw materials is reduced, the service life of conveying equipment is prolonged, and remarkable economic and social benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco leaf processing equipment in the cigarette industry, and specifically relates to a conveyor belt unloading buffer device. Background Technology

[0002] In the cigarette production process, the raw material for tobacco shreds is large tobacco blocks packaged in cardboard boxes after being pressed from re-dried tobacco leaves. When processing the tobacco shreds, the cardboard packaging needs to be removed and the large tobacco blocks need to be cut into smaller tobacco blocks. These smaller tobacco blocks are then transported by belt conveyor to a vibrating conveyor, where they are broken down into loose tobacco leaves before entering the subsequent processing steps.

[0003] Firstly, during the transport of tobacco blocks, the significant height difference between the belt conveyor and the vibrating conveyor, coupled with the vibrating conveyor's angled orientation relative to the horizontal plane, leads to a substantial increase in tobacco leaf breakage. This is particularly noticeable when the chopped tobacco blocks fall onto the vibrating conveyor without proper cushioning, resulting in strong impacts and vibrations. Compared to the gentler dispersing action of the vibrating conveyor, this significantly increases the amount of broken tobacco leaves. Excessive breakage significantly impacts the shredding process, reducing the whole-shred rate and affecting the filling properties and combustibility of the cigarettes, thus impacting cigarette quality. Furthermore, the tobacco fragments may contain numerous impurities and stems, which are difficult to remove during shredding, further reducing the purity of the shredded tobacco and compromising cigarette quality. Consequently, some raw tobacco material cannot be effectively utilized, resulting in significant waste and increased costs.

[0004] Secondly, the impact of the smoke blocks also puts enormous stress on the vibrating conveyor itself. The abnormal wear and deformation caused by these impacts during long-term operation not only shortens the equipment's service life but also increases maintenance and upkeep costs.

[0005] Therefore, there is an urgent need for a conveyor belt unloading buffer device that can effectively reduce the falling and breaking of shredded tobacco blocks, reduce tobacco leaf loss, reduce raw material costs, and extend the service life of the conveying equipment. Utility Model Content

[0006] In response to the work requirements and existing problems in the aforementioned background technology, the inventors have considered and innovated in order to provide a conveyor belt unloading buffer device that buffers the process of slit tobacco blocks being transported from the belt conveyor to the vibrating conveyor, thereby reducing the large amount of breakage caused by the impact of the slit tobacco blocks on the vibrating conveyor.

[0007] To solve the above problems and achieve the above objectives, the present invention adopts the following technical solution:

[0008] A conveyor belt unloading buffer device, comprising:

[0009] Side mounting plate (1), there are two side mounting plates (1), each fixedly connected to both sides of the output end of the belt conveyor (8). The side mounting plate (1) has several screw holes and shaft holes.

[0010] The buffer rebound assembly (2) consists of two sets, each detachably connected to the side mounting plate (1) by bolts and nuts;

[0011] There are two conversion mechanisms (3), each of which is detachably connected to the bottom of the buffer rebound assembly (2);

[0012] A rotating shaft and rotating rod assembly (4) is detachably connected to two conversion mechanisms (3);

[0013] The buffer plate (5) is fixedly connected to the center of the rotating shaft (41) of the rotating shaft and rotating rod assembly (4);

[0014] The bearing housing assembly (6) consists of two sets, which are detachably connected to the side mounting plate (1) and connected to the rotating shaft and rod assembly (4) by bolts and nuts.

[0015] As a preferred embodiment of this utility model, the buffer rebound assembly (2) includes:

[0016] The first connector (21) is detachably connected to the side mounting plate (1) by bolts and nuts. The first connector (21) is L-shaped in general and has at least two screw holes and one screw hole.

[0017] The second connector (22) is detachably connected to the side mounting plate (1) by bolts and nuts. The second connector (22) is L-shaped in general and has at least two screw holes and one screw hole.

[0018] A semi-threaded rod (23) passes through the screw holes of the second connector (22) and the first connector (21) and is locked and fixed by the first locking nut (25);

[0019] Spring (24), which is nested on the semi-threaded rod (23), can adjust the initial compression amount by adjusting nut (26) and adjusting nut washer (27) installed below the first connector (21) and above the spring (24).

[0020] As a preferred embodiment of this utility model, the conversion mechanism (3) includes:

[0021] The slide groove component (31) is detachably connected to the bottom of the semi-threaded rod (23) via a second locking nut (32) and a second locking nut washer (33). The slide groove component (31) consists of a rectangular connecting plate and a slide groove plate, with a slide groove in the center of the slide groove plate.

[0022] The slide rod (34) has one end embedded in the groove of the slide groove component (31) and can slide in the groove. It is detachably connected to the rotating rod (43) of the rotating shaft and rotating rod assembly (4) by the third locking nut (35) and the fourth locking nut (36).

[0023] As a preferred embodiment of this utility model, the rotating shaft and rotating rod assembly (4) includes:

[0024] A rotating shaft (41) is connected at one end to a bearing housing assembly (6) and at the other end to another bearing housing assembly (6). Each end of the rotating shaft (41) has a keyway.

[0025] There are two bushings (42), each connected to both ends of the rotating shaft (41) by a key (44) and a set screw (45);

[0026] There are two rotating rods (43), each fixedly connected to the bushing (42). There is a circular hole on the rotating rod (43) for the sliding rod (34) to pass through.

[0027] The working principle of this utility model is as follows:

[0028] The side mounting plate (1) serves as the basic frame of the entire device and is fixedly connected to both sides of the output end of the belt conveyor (8) to ensure the stability of the device. The buffer rebound assembly (2) is detachably connected to the side mounting plate (1) by bolts and nuts, which facilitates later maintenance and replacement. The spring (24) serves as the main component of the buffer. Its initial compression is adjusted by adjusting the nut (26) and adjusting the nut washer (27), thereby controlling the strength and effect of the buffer and ensuring that the slit tobacco block (7) can fall smoothly into the vibrating conveyor (9). The design of the chute component (31), slide bar (34) and rotating bar (43) extends the lever arm when the device rotates and increases the torque, enabling the device to achieve stronger buffer strength.

[0029] When the slit tobacco block (7) falls from the belt conveyor (8), it first contacts the buffer plate (5). The buffer plate (5) rotates downward around the shaft (41) under the influence of the weight of the tobacco block through the rotating shaft and rotating rod assembly (4) and the bearing seat assembly (6). Then, through the transmission of the chute component (31), the slide rod (34) and the rotating rod (43), the semi-threaded rod (23) is pulled down and the spring (24) is compressed downward to absorb the impact force when the tobacco block falls. The slit tobacco block (7) falls smoothly into the vibrating conveyor (9) to avoid the tobacco block directly hitting the vibrating conveyor (9) and causing it to break. When the buffer plate (5) loses its weight, the spring (24) rebounds stably and the buffer plate (5) returns to its original position, which can then buffer the next slit tobacco block (7).

[0030] The beneficial effects of this utility model are:

[0031] 1. This utility model significantly reduces the breakage rate of tobacco leaves, reduces raw material waste, and lowers costs: This device can effectively absorb the impact force when the slit tobacco blocks fall, avoiding direct collision between the slit tobacco blocks and the vibrating conveyor, thereby significantly reducing the breakage rate of tobacco leaves.

[0032] The reduced breakage rate of tobacco leaves allows for more effective utilization of raw materials, reducing waste. Simultaneously, the improved whole-shred rate of shredded tobacco and the enhanced quality of cigarettes also reduce the need for re-investment in raw materials and increased production costs due to substandard quality.

[0033] 2. This invention extends the service life of conveying equipment: By buffering and rebounding the slit tobacco blocks during the conveying process from the belt conveyor to the vibrating conveyor, this device effectively reduces the impact pressure of the slit tobacco blocks on the vibrating conveyor, thereby reducing abnormal wear and deformation of the equipment and extending its service life. This not only reduces equipment maintenance costs but also improves the stability and reliability of the equipment. Attached Figure Description

[0034] Figure 1 This is one of the schematic diagrams of the working state of a conveyor belt unloading buffer device according to this utility model;

[0035] Figure 2 This is the second schematic diagram of the working state of a conveyor belt unloading buffer device according to this utility model;

[0036] Figure 3 This is a schematic diagram of the downward rotational movement of a conveyor belt unloading buffer device according to this utility model;

[0037] Figure 4 This is a schematic diagram of the overall three-dimensional structure of a conveyor belt unloading buffer device according to the present invention;

[0038] Figure 5This is one of the partial structural schematic diagrams of a conveyor belt unloading buffer device according to this utility model;

[0039] Figure 6 This is the second partial structural schematic diagram of a conveyor belt unloading buffer device according to this utility model;

[0040] Figure 7 This is one of the three-dimensional assembly drawings of a conveyor belt unloading buffer device according to this utility model;

[0041] Figure 8 This is the second three-dimensional assembly drawing of a conveyor belt unloading buffer device according to this utility model;

[0042] Figure 9 This is the third three-dimensional assembly drawing of a conveyor belt unloading buffer device according to this utility model;

[0043] The figures are labeled as follows: 1—side mounting plate; 2—buffer rebound assembly; 21—first connecting piece; 22—second connecting piece; 23—semi-threaded rod; 24—spring; 25—first locking nut; 26—adjusting nut; 27—adjusting nut washer; 3—conversion mechanism; 31—slide groove component; 32—second locking nut; 33—second locking nut washer; 34—slide rod; 35—third locking nut; 36—fourth locking nut; 4—rotating shaft and rotating rod assembly; 41—rotating shaft; 42—shaft sleeve; 43—rotating rod; 44—key; 45—set screw; 5—buffer support plate; 6—bearing seat assembly; 7—slit tobacco blocks; 7A—loose tobacco leaves; 8—belt conveyor; 9—vibrating conveyor. Detailed Implementation

[0044] To make the purpose, technical solution and advantages of this utility model patent clearer, the present utility model patent will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model patent. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concept of this utility model patent.

[0045] Example 1

[0046] like Figure 1 — Figure 9 The conveyor belt unloading buffer device shown includes:

[0047] Side mounting plate 1, there are two side mounting plates 1, each fixedly connected to both sides of the output end of belt conveyor 8, and the side mounting plate 1 has several screw holes and shaft holes;

[0048] Buffer rebound assembly 2, there are two sets of buffer rebound assembly 2, each detachably connected to the side mounting plate 1 by bolts and nuts;

[0049] There are two conversion mechanisms 3, each detachably connected to the bottom of the buffer rebound assembly 2.

[0050] A rotating shaft and rotating rod assembly 4 is detachably connected to two conversion mechanisms 3.

[0051] The buffer plate 5 is fixedly connected to the center of the rotating shaft 41 of the rotating shaft and rotating rod assembly 4;

[0052] The bearing housing assembly 6 consists of two sets, which are detachably connected to the side mounting plate 1 and connected to the rotating shaft and rod assembly 4 by bolts and nuts.

[0053] Furthermore, such as Figure 8 As shown, the buffer rebound assembly 2 includes:

[0054] The first connector 21 is detachably connected to the side mounting plate 1 via bolts and nuts. The first connector 21 is generally "L" shaped and has at least two screw holes and one screw rod hole.

[0055] The second connector 22 is detachably connected to the side mounting plate 1 via bolts and nuts. The second connector 22 is generally L-shaped and has at least two screw holes and one screw hole.

[0056] The semi-threaded rod 23 passes through the screw holes of the second connector 22 and the first connector 21 and is locked and fixed by the first locking nut 25;

[0057] Spring 24 is nested on the semi-threaded rod 23. The initial compression of spring 24 can be adjusted by adjusting nut 26 and adjusting nut washer 27 installed below the first connector 21 and above spring 24.

[0058] Furthermore, such as Figure 3 — Figure 9 As shown, the conversion mechanism 3 includes:

[0059] The sliding groove component 31 is detachably connected to the bottom of the semi-threaded rod 23 via a second locking nut 32 and a second locking nut washer 33. The sliding groove component 31 consists of a rectangular connecting plate and a sliding groove plate, with a sliding groove in the center of the sliding groove plate.

[0060] The slide rod 34 has one end embedded in the groove of the slide groove component 31 and can slide in the groove. It is detachably connected to the rotating rod 43 of the rotating shaft and rotating rod assembly 4 by the third locking nut 35 and the fourth locking nut 36.

[0061] Furthermore, such as Figure 3 — Figure 9 As shown, the rotating shaft and rotating rod assembly 4 includes:

[0062] A rotating shaft 41 is connected at one end to a bearing housing assembly 6 and at the other end to another bearing housing assembly 6. Each end of the rotating shaft 41 has a keyway.

[0063] Two bushings 42 are provided, each connected to both ends of the rotating shaft 41 by a key 44 and a set screw 45.

[0064] There are two rotating rods 43, each fixedly connected to the bushing 42. Each rotating rod 43 has a circular hole through which the sliding rod 34 passes.

[0065] The specific usage process of this utility model is as follows:

[0066] All components required for the device are prefabricated in the factory, according to... Figure 1 , Figure 4 , Figure 7 — Figure 9 The assembly shown is completed and welded to the output end of the belt conveyor 8. Then, the initial compression is adjusted by turning the adjusting nut 26 and adjusting nut washer 27 to control the buffer strength and a trial run is conducted to complete the debugging of this device.

[0067] like Figure 1 , Figure 2 As shown, after the device is debugged, the equipment is started. The slit tobacco block 7 is conveyed from the belt conveyor 8 to the vibrating conveyor 9. When the slit tobacco block 7 falls down from the output end of the belt conveyor 8, it first contacts the buffer plate 5. The buffer plate 5 rotates downward around the shaft 41 under the influence of the weight of the tobacco block through the rotating shaft and rotating rod assembly 4 and the bearing seat assembly 6. Then, through the transmission of the sliding groove component 31, the sliding rod 34 and the rotating rod 43, the semi-threaded rod 23 is pulled down and the spring 24 is compressed downward to absorb the impact force when the tobacco block falls. The slit tobacco block 7 falls smoothly into the vibrating conveyor 9, avoiding the tobacco block from directly hitting the vibrating conveyor 9 and causing it to break. When the buffer plate 5 loses its weight, the spring 24 rebounds stably and the buffer plate 5 returns to its original position, which can then buffer the next slit tobacco block 7.

[0068] As time goes by, such Figure 1 , Figure 2 As shown, the slit tobacco blocks 7 are gently conveyed to the vibrating conveyor 9 one by one, and are gently vibrated and broken into loose tobacco leaves 7A by the vibrating conveyor 9 and then conveyed to the subsequent shredding process. The amount of broken tobacco is greatly reduced compared to the slit tobacco blocks 7 directly impacting the vibrating conveyor 9.

[0069] Finally, it should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A conveyor belt unloading buffer device, characterized in that, It includes: Side mounting plate (1), there are two side mounting plates (1), each fixedly connected to both sides of the output end of the belt conveyor (8). The side mounting plate (1) has several screw holes and shaft holes. The buffer rebound assembly (2) consists of two sets, each detachably connected to the side mounting plate (1) by bolts and nuts; There are two conversion mechanisms (3), each detachably connected to the bottom of the buffer rebound assembly (2); A rotating shaft and rotating rod assembly (4) is detachably connected to two conversion mechanisms (3); The buffer plate (5) is fixedly connected to the center of the rotating shaft (41) of the rotating shaft and rotating rod assembly (4); The bearing housing assembly (6) consists of two sets, which are detachably connected to the side mounting plate (1) and connected to the rotating shaft and rod assembly (4) by bolts and nuts.

2. The conveyor belt unloading buffer device according to claim 1, characterized in that, The buffer rebound assembly (2) includes: The first connector (21) is detachably connected to the side mounting plate (1) by bolts and nuts. The first connector (21) is L-shaped in general and has at least two screw holes and one screw hole. The second connector (22) is detachably connected to the side mounting plate (1) by bolts and nuts. The second connector (22) is L-shaped in general and has at least two screw holes and one screw hole. A semi-threaded rod (23) passes through the screw holes of the second connector (22) and the first connector (21) and is locked and fixed by the first locking nut (25); Spring (24) is nested on the semi-threaded rod (23). The initial compression of spring (24) can be adjusted by adjusting nut (26) and adjusting nut washer (27) installed below the first connector (21) and above spring (24).

3. The conveyor belt unloading buffer device according to claim 1, characterized in that, The conversion mechanism (3) includes: The slide groove component (31) is detachably connected to the bottom of the semi-threaded rod (23) via a second locking nut (32) and a second locking nut washer (33). The slide groove component (31) consists of a rectangular connecting plate and a slide groove plate, with a slide groove in the center of the slide groove plate. The slide rod (34) has one end embedded in the groove of the slide groove component (31) and can slide in the groove. It is detachably connected to the rotating rod (43) of the rotating shaft and rotating rod assembly (4) by the third locking nut (35) and the fourth locking nut (36).

4. The conveyor belt unloading buffer device according to claim 1, characterized in that, The rotating shaft and rotating rod assembly (4) includes: A rotating shaft (41) is connected at one end to a bearing housing assembly (6) and at the other end to another bearing housing assembly (6). Each end of the rotating shaft (41) has a keyway. There are two bushings (42), each connected to both ends of the rotating shaft (41) by a key (44) and a set screw (45); There are two rotating rods (43), each fixedly connected to the bushing (42). The rotating rod (43) has a circular hole through which the sliding rod (34) passes.

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