CN112978350A

CN112978350A - Tobacco leaf grabbing device and method

Info

Publication number: CN112978350A
Application number: CN202110135290.0A
Authority: CN
Inventors: 王文杰; 王延军; 秦少华; 尹志安; 徐敏; 程明远; 何雷; 李秋剑; 李彦周; 张长安; 楚晗
Original assignee: Tianchang International Tobacco Co ltd
Current assignee: Tianchang International Tobacco Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-06-18
Anticipated expiration: 2041-02-01
Also published as: CN112978350B

Abstract

The invention relates to a tobacco leaf grabbing device and a grabbing method, the tobacco leaf grabbing device comprises a mounting plate and a mechanical clamp hinged with the lower end of the mounting plate, a driving element for controlling the mechanical clamp to rotate is hinged on the mounting plate, two rows of symmetrical clamping teeth are arranged on the mechanical clamp, a scraper blade is hinged with the upper end of the mechanical clamp, a strip-shaped hole for the clamping teeth to pass through is arranged on the scraper blade, a limiting element is fixed in the middle of the scraper blade, the other end of the limiting element is fixedly connected with the mechanical clamp, two scraper blades are symmetrically arranged on the existing mechanical clamp, a strip-shaped hole corresponding to the clamping teeth of the mechanical clamp is arranged on the scraper blade, when the mechanical clamp loosens tobacco leaves to be put in, the scraper blade rotates downwards under the combined action of gravity and a tension spring, the strip-shaped hole rotates downwards relative to the clamping teeth, the tobacco leaves stabbed on the clamping teeth are, the working efficiency of the mechanical clamp is improved.

Description

Tobacco leaf grabbing device and method

Technical Field

The invention relates to the technical field of tobacco leaf baking, in particular to a tobacco leaf grabbing device and a tobacco leaf grabbing method.

Background

The production process of the cigarette mainly comprises seven major items of tobacco leaf primary drying, threshing and redrying, tobacco leaf fermentation, cigarette formulation, cigarette shredding, cigarette rolling and cigarette packaging, wherein before the tobacco leaf redrying process, the tobacco leaves in the material frame are required to be placed on a conveying belt of a feeding line, and the conveying and the feeding are carried out through the conveying belt. At present, the feeding mode of most of cigarette factories still adopts the traditional manual grabbing and taking of tobacco leaves to be baked in a material frame and throwing the tobacco leaves onto a feeding line conveyor belt, operators need to continuously and repeatedly grab and place the tobacco leaves for a long time, the labor intensity is high, the labor is consumed, and the efficiency is low; the tobacco leaves are also grabbed by adopting a mechanical clamp, the mechanical clamp is provided with a plurality of clamp teeth, and the grabbing and throwing of the tobacco leaves are realized through the hinged rotation of the clamp teeth.

Disclosure of Invention

Most of clamping teeth of the existing mechanical clamp are made of metal products, as shown in fig. 1, the lower ends of the clamping teeth are generally arranged to be sharp structures, so that the clamping teeth can be conveniently inserted into tobacco leaves to grab the tobacco leaves, however, the lower ends of the clamping teeth are sharp, when the mechanical clamp grabs the tobacco leaves, the clamping teeth can penetrate into the tobacco leaves, part of the tobacco leaves are hung on the clamping teeth, and when the mechanical clamp loosens the tobacco leaves and puts the tobacco leaves on a conveying belt, the tobacco leaves hung on the clamping teeth can not fall off. After the mechanical clamp repeatedly grabs the tobacco leaves for several times, the tobacco leaves stabbed and hung on the clamp teeth are more and are fully covered with the whole clamp teeth, so that when the mechanical clamp grabs the tobacco leaves, the clamp teeth can not be inserted into the tobacco leaves, the grabbing function can not be realized, the grabbing work needs to be suspended, the tobacco leaves stabbed and hung on the clamp teeth are manually removed, and the working efficiency of the mechanical clamp is seriously influenced.

The invention aims to solve the technical problems of the existing mechanical clamp, and provides a tobacco leaf grabbing device and a tobacco leaf grabbing method.

The technical scheme of the invention is as follows:

the utility model provides a tobacco leaf grabbing device, includes the mounting panel and presss from both sides with mounting panel lower extreme articulated machinery, articulated on the mounting panel have control machinery to press from both sides pivoted drive element, machinery is provided with the double-layered tooth of two rows of symmetries on pressing from both sides, machinery presss from both sides the upper end and articulates there is the scraper blade, set up the bar hole that supplies double-layered tooth to pass on the scraper blade, the scraper blade middle part is fixed with spacing part, the spacing part other end is connected with mechanical clamp fixed.

The number of the scraping plates is two, the scraping plates are symmetrically arranged on a vertical plane where the mounting plate is located, and the two scraping plates are respectively matched with two rows of symmetrical clamping teeth of the mechanical clamp.

The scraper blade is the board of L type structure, the opening side of scraper blade L type structure is towards the outside that the machinery pressed from both sides, when the scraper blade only receives the elastic element effect, the lower terminal surface of scraper blade L type structure is perpendicular with the lower extreme that presss from both sides the tooth.

The limiting element comprises a tension spring fixing rod fixedly connected with the scraper and a limiting block fixed at the rod part of the tension spring fixing rod and perpendicular to the upper part of the clamping tooth, and the other end of the tension spring fixing rod is connected with the mechanical clamp through a tension spring.

The clamping teeth are of an L-shaped structure, and the opening side of the L-shaped structure of the clamping teeth faces the inner side of the mechanical clamp.

The driving element comprises an air cylinder, one end of the air cylinder is hinged with the mounting plate, and the other end of the air cylinder is hinged with the mechanical clamp through a connecting rod.

The strip-shaped hole enables the clamping tooth to move from the minimum stroke position to the maximum stroke position when passing through the strip-shaped hole.

A method of gripping using a tobacco gripping apparatus according to any preceding claim, comprising: controlling the clamping teeth of the mechanical clamp to rotate upwards around the rotating shaft to be in an opening state, and controlling the scraper to be in an initial position; controlling the mechanical clamp to move downwards, inserting the clamp teeth into the tobacco leaves, enabling the scraper to rotate upwards to the maximum stroke position around the scraper rotating shaft, and enabling the clamp teeth to penetrate through the strip-shaped holes in the scraper; controlling the clamping teeth to rotate and close downwards around the rotating shaft to grab the tobacco leaves; controlling the mechanical clamp to move upwards and move above the transmission belt; the clamping teeth are controlled to rotate upwards around the rotating shaft, tobacco leaves are loosened and thrown onto the transmission belt, the scraping plate rotates downwards under the combined action of gravity and the tension spring, the strip-shaped holes in the scraping plate downwards rotate relative to the clamping teeth, meanwhile, the tobacco leaves stabbed and hung on the clamping teeth are scraped, and the scraping plate stops rotating at the initial position under the action of the limiting block.

Compared with the prior art, the mechanical clamp has the technical effects that the two scraping plates are symmetrically arranged on the existing mechanical clamp, the scraping plates are hinged with the mechanical clamp and can rotate relative to the mechanical clamp, the scraping plates are provided with strip-shaped holes corresponding to the clamping teeth of the mechanical clamp, and the clamping teeth can realize rotary motion in the strip-shaped holes after penetrating through the strip-shaped holes. When the tobacco leaf is grabbed to the mechanical clamp, insert the tobacco leaf when the clamp tooth that the machinery pressed from both sides, because the pressure that the machinery pressed from both sides the production of pushing down, make the scraper blade upwards rotate for the mechanical clamp, the clamp tooth that does not influence the mechanical clamp snatchs the tobacco leaf, when the machinery pressed from both sides unclamp the tobacco leaf and put in, the scraper blade is because the combined action of gravity and extension spring downwards rotates, and then the bar hole rotates downwards for the clamp tooth, strike off the tobacco leaf that the thorn was hung on the clamp tooth, realize snatching at every turn and put in after the tobacco leaf, the tobacco leaf that the thorn was hung on the automatic clear clamp tooth, make the machinery press from both sides normal work in succession, whole device is simple and.

Drawings

Fig. 1 is a schematic view of a conventional mechanical clip structure.

Fig. 2 is a front view of the structure of the present invention.

Figure 3 is a side view of the structure of the present invention.

Figure 4 is a view of the use of the present invention inserted into a tobacco leaf.

Fig. 5 is a view showing a state of use after the tobacco leaves are gripped according to the present invention.

Fig. 6 is a schematic view of a mechanical clip and squeegee configuration.

Fig. 7 is a structural schematic diagram of the initial position states of the clamping teeth and the limiting blocks.

Fig. 8 is a structural schematic diagram of the state of the clamping teeth and the limiting blocks after the tobacco leaves are grabbed.

Wherein 1 is a mechanical clamp; 2 is a clip tooth; 3 is a cross frame; 4 is a squeegee; 5 is a strip-shaped hole; 6 is a mounting plate; 7 is a cylinder; 8 is a connecting rod; 9 is a connecting rod rotating shaft; 10 is a rotating shaft; 11 is a rotating member; 12 is a scraper rotating shaft; 13 is a tension spring; 14 is a tension spring fixing rod; and 15 is a limiting block.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

As shown in fig. 1 to 8, the invention provides a tobacco leaf gripping device, which comprises a mounting plate 6, wherein a rotating shaft 10 is fixed at the lower end of the mounting plate 6, two rotating members 11 are hinged to the rotating shaft 10 in a matching manner, the two rotating shafts 10 and the two rotating members 11 are respectively positioned at two sides of the lower end of the mounting plate 6, the rotating members 11 can rotate up and down around the rotating shafts 10, and the other end of each rotating member 11 is fixedly connected with a mechanical clamp 1 and can be welded. The mechanical clamp 1 is positioned below the mounting plate 6 and is hinged with the mounting plate 6 through a rotating shaft 10 and a rotating member 11. The mechanical clamp 1 comprises two rows of clamping teeth 2, the two rows of clamping teeth 2 are respectively located on two sides of the mechanical clamp 1, the two rows of clamping teeth 2 are symmetrically arranged relative to a vertical plane where the mounting plate 6 is located, during operation, the two rows of clamping teeth 2 move in opposite directions to grab and loosen tobacco leaves, when the two rows of clamping teeth 2 rotate towards the inner side of the mechanical clamp 1 at the same time, the tobacco leaves are grabbed, and when the two rows of clamping teeth 2 rotate towards the outer side of the mechanical clamp 1 at the same time, the tobacco leaves are loosened to be released. And each row all contains a plurality of double-layered teeth 2, and the structure of pressing from both sides tooth 2 is the L type, and the opening side of the L type of pressing from both sides tooth 2 is towards the inboard that machinery pressed from both sides 1, and two rows of L type opening sides of pressing from both sides tooth 2 set up relatively promptly, and the corner welding of the L type structure of pressing from both sides tooth 2 has crossbearer 3, and crossbearer 3 welds with a plurality of corners of pressing from both sides tooth 2 that arrange one row respectively, presss from both sides tooth 2 fixed connection with one row, has increased the intensity that machinery pressed from both sides 1. Articulated on the mounting panel 6 have the actuating element that drives mechanical clamp 1 and rotate from top to bottom, the actuating element has two, the symmetry is articulated to be connected in the both sides of mounting panel 6, be used for driving two rows of clamp teeth 2 of mechanical clamp 1 respectively, the actuating element includes cylinder 7, the cylinder body end of cylinder 7 is articulated with mounting panel 6 and is connected, the piston end of cylinder 7 and the one end fixed connection of connecting rod 8, the other end of connecting rod 8 passes through connecting rod pivot 9 and is articulated with mechanical clamp 1 and is connected, cylinder 7 can set up on the axis of mounting panel 6, make the mounting panel 6 of cylinder 7 both sides symmetrical, it is corresponding, connecting rod pivot 9 sets up on the axis of mechanical clamp 1 one side, make the clamp tooth 2 symmetry of connecting rod pivot 9 left and right sides, mechanical clamp operation's stability has.

The upper end of the mechanical clamp 1 is hinged with a scraper 4 through a scraper rotating shaft 12, the scraper 4 is a metal plate with an L-shaped structure, the number of the scraper 4 is two, the two scraper 4 correspond to the two rows of clamping teeth 2 of the mechanical clamp 1 respectively, the opening sides of the L-shaped structures of the scraper 4 face the outer side of the mechanical clamp 1, and the lower end face of the L-shaped structure of the preferred scraper 4 is perpendicular to the lower ends of the clamping teeth 2. Seted up bar hole 5 on the scraper blade 4, the quantity of bar hole 5 is the same with the quantity that presss from both sides tooth 2, and the position that bar hole 5 is located on the scraper blade 4 corresponds with the position that presss from both sides tooth 2, makes to press from both sides tooth 2 and can pass bar hole 5. During operation, the scraper 4 rotates to the maximum stroke position of top from the minimum stroke position of below around the scraper pivot 12, and at this moment, the clip tooth 2 rotates to the maximum stroke position of below from the minimum stroke position of top, and the position that the clip tooth 2 is arranged in the bar-shaped hole 5 reaches the tip of the upper end of the bar-shaped hole 5 from the tip of the lower end of the bar-shaped hole 5, and the length that the clip tooth 2 passes through the bar-shaped hole 5 reaches the longest. The length of the strip-shaped hole 5 is required to be enough to ensure that the clamping teeth 2 do not interfere with and can freely move from the minimum stroke position to the maximum stroke position. The scraper 4 is welded at the center position and is provided with a tension spring fixing rod 14, the other end of the tension spring fixing rod 14 is connected with a tension spring 13, the other end of the tension spring 13 is fixedly connected with the cross frame 3, a rod part of the tension spring fixing rod 14 is fixed with a limiting block 15 in the direction perpendicular to the tension spring fixing rod 14, and the limiting block 15 is perpendicular to the upper part of the clamping tooth 2. When the scraper 4 is in the initial position state, the limiting block 15 contacts with the upper part of the clamping tooth 2, the limiting block 15 is prevented from moving downwards by the clamping tooth 2, the tension spring fixing rod 14 fixedly connected with the limiting block 15 and the scraper 4 are further prevented from moving downwards, and the upper end face of the L-shaped structure of the scraper 4 can be inclined by a certain angle instead of returning to the vertical direction position due to the action of gravity and the tension of the tension spring and even rotating to exceed the vertical direction position. When machinery presss from both sides 1 and inserts and snatch the tobacco leaf in the tobacco leaf, machinery 1 presss from both sides the tobacco leaf of impressing downwards, a decurrent pressure has been exerted, at this moment, because scraper blade 4 inclines certain angle, under the effect of pressure, scraper blade 4 upwards rotates around scraper blade pivot 12, do not disturb machinery and press from both sides 1 and snatch the tobacco leaf, stopper 15 this moment keeps away from double-layered tooth 2, extension spring 13 is stretched, only when scraper blade 4 upwards rotates simultaneously, be located the tobacco leaf top of snatching, when machinery presss from both sides 1 and loosens the tobacco leaf and puts in, scraper blade 4 just can scrape off the tobacco leaf of stinging on pressing from both sides tooth 2 through bar hole 5. If the position of the upper end surface of the scraper 4 is in the vertical position or rotates beyond the vertical position, when the mechanical clamp 1 is pressed down to apply pressure, the scraper 4 cannot automatically rotate upwards, therefore, the limiting block 15 is needed to be arranged to limit the position of the scraper 4, when the scraper 4 rotates downwards, the stretched length of the tension spring 13 is gradually reduced, the tension of the tension spring 13 on the scraper 4 is gradually reduced, the limiting block 15 rotates downwards to be gradually close to the clamping teeth 2, after the limiting block 15 contacts the clamping teeth 2, because the limiting block 15 is located above the clamping teeth 2 and is perpendicular to the clamping teeth 2, the clamping teeth 2 prevent the limiting block 15 from moving, the limiting block 15 stops moving, the tension spring fixing rod 14 fixedly connected with the limiting block 15 and the scraper 4 also stop moving at the moment, the upper end face of the scraper 4 stops rotating before reaching the vertical position, and the scraper 4 can automatically rotate upwards under the action of pressure when the tobacco leaves are grabbed next time.

A method of gripping using a tobacco gripping apparatus as described above, comprising: controlling the clamp teeth 2 to rotate upwards around the rotating shaft 10, enabling the clamp teeth 2 to be in an opening state, enabling the scraper 4 to be at an initial position, enabling the limiting block 15 to be located above the clamp teeth 2 and to be in contact with the clamp teeth 2, controlling the mechanical clamp 1 to move downwards to the upper side of tobacco leaves, enabling the mechanical clamp 1 to continue to move downwards when the clamp teeth 2 of the mechanical clamp 1 are in contact with the tobacco leaves, inserting the clamp teeth 2 into the tobacco leaves so as to be capable of grabbing more tobacco leaves, enabling the scraper 4 below the mechanical clamp 1 and the tobacco leaves below the mechanical clamp 1 to generate pressure action due to the fact that the mechanical clamp 1 presses downwards, enabling the scraper 4 to rotate upwards around the scraper rotating shaft 12 under the pressure action, enabling the scraper 4 not to rotate again until the scraper 4 rotates to a maximum stroke position, enabling the clamp teeth 2 to penetrate through the strip-shaped holes 5 of the scraper 4 at the moment, enabling the limiting block 15. Then the clamping teeth 2 of the mechanical clamp 1 are controlled to rotate downwards to clamp the tobacco leaves, the mechanical clamp 1 is lifted upwards, when the mechanical clamp 1 moves above the transmission belt, the clamping teeth 2 are loosened to throw in the tobacco leaves, at the moment, the scraper 4 rotates downwards under the action of gravity and the tension of the tension spring 13, the strip-shaped hole 5 rotates downwards relative to the clamping teeth 2 along with the rotation of the scraper 4, the tobacco leaves stabbed and hung on the clamping teeth 2 are scraped while rotating, because the lower end surface of the L-shaped structure of the scraper 4 is vertical to the lower ends of the clamping teeth 2, when the scraping plate 4 rotates downwards relative to the clamping teeth 2, the tobacco leaves stabbed and hung on the clamping teeth 2 can be better scraped clean, when the limiting block 15 contacts the clamping teeth 2, the clamping teeth 2 prevent the limiting block 15 from continuing to move downwards, the scraper 4 stops rotating, the rotation of the scraping blade 4 is stopped before the upper end surface of the scraping blade 4 reaches the vertical position, so that the scraping blade 4 can be automatically rotated upward under pressure when the machine grips the tobacco next time.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a tobacco leaf grabbing device, includes mounting panel (6) and presss from both sides (1) with mounting panel (6) lower extreme articulated machinery, articulated on mounting panel (6) have the drive element that control machinery pressed from both sides (1) pivoted, its characterized in that: the mechanical clamp is characterized in that two rows of symmetrical clamping teeth (2) are arranged on the mechanical clamp (1), the upper end of the mechanical clamp (1) is hinged with a scraper (4), a strip-shaped hole (5) for the clamping teeth (2) to penetrate is formed in the scraper (4), a limiting element is fixed in the middle of the scraper (4), and the other end of the limiting element is fixedly connected with the mechanical clamp (1).

2. The tobacco-leaf grasping device according to claim 1, wherein: the number of the scraping plates (4) is two, the scraping plates are symmetrically arranged about a vertical plane where the mounting plate (6) is located, and the two scraping plates (4) are matched with two rows of symmetrical clamping teeth (2) of the mechanical clamp (1) respectively.

3. The tobacco-leaf grasping device according to claim 2, wherein: the scraper blade (4) is a plate with an L-shaped structure, the opening side of the L-shaped structure of the scraper blade (4) faces the outer side of the mechanical clamp (1), and when the scraper blade (4) is only acted by an elastic element, the lower end face of the L-shaped structure of the scraper blade (4) is perpendicular to the lower end of the clamp tooth (2).

4. The tobacco-leaf grasping device according to claim 1, wherein: the limiting element comprises a tension spring fixing rod (14) fixedly connected with the scraper (4) and a limiting block (15) fixed on the rod part of the tension spring fixing rod (14) and perpendicular to the upper part of the clamping teeth (2), and the other end of the tension spring fixing rod (14) is connected with the mechanical clamp (1) through a tension spring (13).

5. The tobacco-leaf grasping device according to claim 1, wherein: the clamping teeth (2) are of L-shaped structures, and the opening sides of the L-shaped structures of the clamping teeth (2) face towards the inner side of the mechanical clamp (1).

6. The tobacco-leaf grasping device according to claim 1, wherein: the driving element comprises a cylinder (7), one end of the cylinder (7) is hinged to the mounting plate (6), and the other end of the cylinder (7) is hinged to the mechanical clamp (1) through a connecting rod (8).

7. The tobacco-leaf grasping device according to claim 1, wherein: the strip-shaped hole (5) enables the clamping tooth (2) to move from the minimum stroke position to the maximum stroke position when passing through the strip-shaped hole (5).

8. A method of gripping using a tobacco-gripping device according to any one of claims 1 to 7, comprising: the clamping teeth (2) of the mechanical clamp (1) are controlled to rotate upwards around the rotating shaft to be in an open state, and the scraper (4) is in an initial position; controlling the mechanical clamp (1) to move downwards, inserting the clamp teeth (2) into the tobacco leaves, enabling the scraper (4) to rotate upwards to the maximum stroke position around the scraper rotating shaft, and enabling the clamp teeth (2) to penetrate through the strip-shaped holes (5) in the scraper (4); controlling the clamping teeth (2) to rotate and close downwards around the rotating shaft to grab the tobacco leaves; controlling the mechanical clamp (1) to move upwards and move above the transmission belt; the clamp teeth (2) are controlled to rotate upwards around the rotating shaft, tobacco leaves are loosened and thrown onto the transmission belt, the scraper (4) rotates downwards under the combined action of gravity and the tension spring (13), the strip-shaped holes (5) in the scraper (4) scrape the tobacco leaves stabbed and hung on the clamp teeth (2) while rotating downwards relative to the clamp teeth (2), and the scraper (4) stops rotating at the initial position under the action of the limiting block (15).