CN217147222U

CN217147222U - Garbage bag with bottom centralized folding and clamping device

Info

Publication number: CN217147222U
Application number: CN202220770677.3U
Authority: CN
Inventors: 梁崇彦; 谭裕华
Original assignee: Foshan Nuoxing Technology Co ltd
Current assignee: Foshan Yazhi Environmental Protection Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-09
Anticipated expiration: 2032-04-06

Abstract

A garbage bag with a bottom is centralized to draw in and the clamping device, including clamping the actuating mechanism, clamping mechanism, drawing in the mechanism; the clamping driving mechanism is characterized in that a motor drives a clamping screw to rotate through a transmission mechanism; the clamping mechanism comprises a first pressing plate and a second pressing plate which are guided by a guide rod and driven by a clamped screw to move relatively; the two schemes of the furling mechanism are selected from one to another: the first scheme is a full-folding mode, and comprises a first hinge and a second hinge, the first hinge and the second hinge do not need to be driven by a motor, and the first hinge and the second hinge are driven by a first pressing plate and a second pressing plate of a clamping mechanism to operate; the second scheme is a semi-folding mode and comprises a furling screw rod, a furling guide rod, a first furling plate, a second furling plate, a first swing rod unit and a second swing rod unit, wherein the first furling plate, the second furling plate, the first swing rod unit and the second swing rod unit are driven by a motor of the clamping driving mechanism through right-angle transmission meshing. The clamping mechanism is good in driving stability, good in guiding precision, high in repeating precision and durable in use; the gathering mechanism achieves that the plastic films in the sealing area are distributed uniformly relatively, and provides good basic conditions for subsequent procedures.

Description

Garbage bag with bottom centralized folding and clamping device

Technical Field

The application relates to an intelligent garbage can which automatically feeds bags and seals by using annular plastic film tube materials; in particular to a central collecting and clamping device for a garbage bag with a bottom.

Background

Modern people inevitably produce garbage in daily life and social activities. Therefore, articles and appliances such as garbage bags and garbage cans have been widely used in homes, hospitals and various public places. The garbage bag commonly used by the non-intelligent garbage can is made into a mode of opening the upper part and sealing the bottom, and the sealing operation is carried out by hands. To the rubbish that produces peculiar smell easily (for example kitchen garbage) or cause pollution easily (for example medical waste) or have the sealed processing requirement, how to reduce as far as possible and even avoid producing the peculiar smell or causing the pollution or spilling hourglass in processes such as collection, seal, storage, the demand of the intelligent garbage bin that can automatic start-stop, automatic sealing exists. Among them, the automatic opening and closing intelligent trash can has been generally used, and various design schemes for automatically sealing the intelligent trash can have been proposed.

The intelligent garbage can comprises a main body, wherein the main body is a can body, the top of the can body is a garbage inlet position, and the garbage inlet position comprises two forms of an upper opening or an upper turning cover (including manual or pedal or touch electric or induction electric and the like); an automatic garbage bag sealing device is arranged below the inlet position. When the garbage bag needs to be packaged and sealed (intelligent judgment or key operation can be adopted), the garbage bag sealing device draws in the garbage bag and carries out hot melting and laminating to generate at least one seal. After the sealing operation is finished, the used garbage bag can be taken out manually; or the intelligent garbage can is pushed out from one side of the garbage can by the pushing device to transfer the used garbage bags. After the garbage bag is used, manual bagging is needed, and the garbage bag enters the next round of garbage collection and treatment. Obviously, the garbage bag sealing device is a key component of the intelligent garbage can.

In view of the above requirements, there are many designs of garbage bag sealing devices that have been released. For a rectangular intelligent garbage can, a mature scheme is that a pair of transverse moving rods capable of moving relatively is arranged in the furling direction (assumed as the X direction) of a garbage bag, a pair of longitudinal moving rods capable of moving relatively is arranged in the hot melting direction (the Y direction opposite to the X direction), and: one of the longitudinally moving rods is provided with an electric heating wire, and the other longitudinally moving rod is provided with an elastic body corresponding to the installation position of the electric heating wire; when the pair of transverse moving rods are folded to a certain distance along the X direction, the two longitudinal moving rods move along the Y direction and clamp the plastic film of the garbage bag, and the heating wire is electrified to carry out hot melting and sealing on the plastic film of the garbage bag. Due to the differences in the composition and thickness of the plastic film used to make the trash bags, manufacturers of intelligent trash cans may choose different hot-melt sealing techniques and processes, which are well established.

However, the plastic films of the garbage bags are locally stacked and overlapped by the structure and the operation mode in the prior art, and the plastic films at the sealing positions cannot be relatively uniformly distributed, so that the temperature of the garbage bags during hot-melting sealing is difficult to master, local adhesion is not firm, and the phenomena of excessive hot-melting thinning and even perforation of the plastic films are easily caused locally, and the phenomena are unacceptable for occasions with higher sealing requirements (such as packaging of kitchen garbage, medical garbage and some special garbage).

Therefore, no matter which hot-melt sealing technology and process are adopted, the plastic film of the garbage bag can be uniformly folded, uniformly distributed and then clamped before hot-melt sealing, good conditions are provided for the next garbage bag sealing, and the plastic film of the garbage bag becomes one of the key technologies for which the engineering technicians in the field need to research and break through urgently.

Disclosure of Invention

In order to overcome the defects in the prior art, the garbage bag clamping device is simple and reasonable in structure, the plastic film at the sealing position is distributed relatively uniformly, the running speed is high, and the garbage bag with the bottom can be folded in the middle and clamped under a good condition for the post process.

The center closing and clamping device for the garbage bag with the bottom is arranged at the position of a garbage throwing opening of a garbage can with a rectangular outline; the direction of the two side lines which are parallel to each other is called a clamping direction, and the direction of the two outer side lines which are parallel to each other is called a furling direction; the clamping direction is perpendicular to the folding direction;

the basic technical scheme of the device comprises a clamping driving mechanism, a clamping mechanism and a furling mechanism.

The clamping driving mechanism comprises a clamping screw rod, a guide rod, a motor and a transmission mechanism.

The outer contour of the clamping screw is divided into two sections by taking the middle position as a structural boundary, wherein a left-hand thread is processed on one section, a right-hand thread with the same lead as the left-hand thread is processed on the other section, and the clamping screw is rotatably and horizontally arranged at one sideline position outside the device through a bearing seat; the guide rod is horizontally arranged at the other side line position of the outer side of the device, which is opposite to the clamping screw rod, and the center line of the guide rod is parallel to the center line of the clamping screw rod; the motor is tightly arranged, and the clamping screw rod is rotated through the transmission mechanism.

The clamping mechanism comprises a first pressing plate and a second pressing plate which are perpendicular to the clamping screw and the guide rod.

The first pressing plate is arranged on one side of the left-hand thread of the clamping screw, and inner hole structures matched with the left-hand thread of the clamping screw and matched with the guide rod in a sliding mode are respectively machined at two ends of the first pressing plate.

The second pressing plate is arranged on one side of the right-hand thread of the clamping screw, and the two ends of the second pressing plate are respectively provided with the right-hand thread matched with the clamping screw and an inner hole structure matched with the guide rod in a sliding manner.

Obviously, the cross section of the guide rod is preferably circular or rectangular to reduce the manufacturing cost.

And the clamping screw rotates to enable the first pressing plate and the second pressing plate to make relative linear displacement.

The motor rotates to drive the clamping screw to rotate in the positive direction, so that the first pressing plate and the second pressing plate perform relative linear displacement from the side line position to the inner side, and finally a clamping state is formed at the middle position;

the motor rotates to drive the clamping screw to rotate reversely, so that the first pressing plate and the second pressing plate perform relative linear displacement from the middle position to the outer side, and finally, the maximum opening state is formed at the sideline position.

The prior centering furling mechanism mainly adopts a special furling driving motor to drive two furling press plates which run oppositely, and needs to be separately provided with a motor for driving; moreover, the furling pressing plate of the mechanism only has the function of simply pushing the garbage bag to move towards the furling direction, and has the major defect of uneven distribution of the plastic film of the garbage bag after furling.

In order to solve the defects, the folding mechanism is specially designed.

The furling mechanism adopts one of the following schemes:

the first scheme of the furling mechanism is a full folding mode; the furling mechanism comprises a first hinge and a second hinge.

The first hinge is composed of two hinge rod pieces which are horizontally arranged, have the same length and one end parts are mutually hinged, and the hinge point is called as a moving hinge point; one end part of the first hinge is hinged with the first pressure plate at one end part, and the other end part of the first hinge is hinged with the end part of the second pressure plate at the same side; when the first pressing plate and the second pressing plate form the maximum opening state at the sideline position, the two hinge rod pieces of the first hinge take the moving hinge point as the vertex, and the internal included angle towards the center of the garbage can is at the maximum value but less than 180 degrees.

The second hinge and the first hinge are same in structure and are symmetrically arranged; the method comprises the following steps:

the second hinge and the first hinge are symmetrically arranged along the central line of the clamping direction, and are composed of two hinge rod pieces which are horizontally arranged, have the same length and one end parts of the two hinge rod pieces are mutually hinged, and the hinge point is called as a moving hinge point; one end part of the second hinge is hinged with the first pressure plate at one end part, and the other end part of the second hinge is hinged with the end part of the second pressure plate at the same side; when the first pressing plate and the second pressing plate form the maximum opening state at the sideline position, the two hinge rod pieces of the second hinge take the moving hinge point as the vertex, and the internal included angle towards the center of the garbage can is at the maximum value but less than 180 degrees.

When the first pressing plate and the second pressing plate make relative linear displacement from the sideline position to the middle position, the inner included angles of the first hinge and the second hinge are continuously reduced along with the continuous movement of the first pressing plate and the second pressing plate to the middle position of the garbage can; when the first pressure plate and the second pressure plate form a clamping state at the middle position, the inner included angle of the first hinge and the second hinge is at a minimum value but less than 0 degree.

From the above, it is known that: according to the first folding mechanism scheme, the first hinge and the second hinge are enabled to respectively push the plastic film of the garbage bag to move towards the middle from the outside to the inside from the folding direction by taking the moving hinge point as a vertex in a hinge linkage mode, so that the plastic film of the garbage bag is relatively uniformly distributed in the clamping direction. Therefore, the first folding mechanism scheme of the present application is obviously different from the prior art, and can obtain cost saving and better use effect.

The second scheme of the furling mechanism is a semi-folding mode; the furling mechanism comprises a furling screw, a furling guide rod, a first furling plate, a second furling plate, a first swing rod unit and a second swing rod unit.

The furling screw is rotatably arranged on one rectangular side of the outer side of the device, which is vertical to the clamping screw, through a bearing seat, the outer contour is divided into two sections by taking the middle position as a structural boundary, one section is processed with left-handed threads, the other section is processed with right-handed threads with the same lead as the left-handed threads, the horizontal projection is vertically intersected with the clamping screw, and a helical gear pair or a bevel gear pair or a worm and gear transmission pair which are mutually meshed and driven at a right angle are arranged between the furling screw and the clamping screw; wherein, the gear or worm arranged on the clamping screw is a driving wheel, and the gear or worm wheel arranged on the furling screw is a driven wheel; the motor of the clamping driving mechanism rotates to drive the clamping screw to rotate, and the helical gear pair or the bevel gear pair or the worm and gear transmission pair drives the furling screw to rotate.

The furling guide rod is arranged on the other rectangular side of the outer side of the device opposite to the furling screw rod, and the horizontal projection of the central line is parallel to the central line of the furling screw rod.

The arrangement directions of the first furling plate and the second furling plate are perpendicular to the furling screw rod.

The first furling plate is arranged on one side of the left-hand thread of the furling screw, a threaded hole structure matched with the left-hand thread of the furling screw is manufactured at one end of the first furling plate, and an inner hole structure matched with the furling guide rod in a sliding mode is manufactured at the other end of the first furling plate; the second furling plate is arranged on one side of the right-hand thread of the furling screw rod, a threaded hole structure matched with the right-hand thread of the furling screw rod is processed at one end of the second furling plate, and an inner hole structure matched with the furling guide rod in a sliding mode is manufactured at the other end of the second furling plate.

Obviously, the cross section of the gathering guide rod is preferably circular or rectangular, so as to reduce the manufacturing cost.

Because the furling mechanism does not need to bear clamping force relative to the clamping mechanism and does not have the requirement of high-precision operation, the structural form of adopting a furling screw rod and a furling guide rod meets the requirement. Of course, two furling screws or a structure with two sides provided with furling screws and furling guide rods at the same time can be adopted, and the two furling screws and the furling guide rods are all conventional structures and are not described in detail herein.

When the motor rotates, the clamping screw rod is driven to rotate in the positive direction, and the furling screw rod is driven to rotate in the positive direction; the clamping screw rotates in the positive direction to enable the first pressure plate and the second pressure plate to make relative linear displacement from the sideline position to the inner side along the clamping direction, and finally a clamping state is formed at the middle position; the furling screw rotates forward to make the first furling plate and the second furling plate move linearly along the furling direction from the sideline position to the inner side, and finally a furling state with a smaller size is formed at the middle position.

When the motor rotates, the clamping screw rod is driven to rotate reversely, and the furling screw rod is driven to rotate reversely; the clamping screw rotates reversely to enable the first pressing plate and the second pressing plate to make relative linear displacement from the middle position to the outer side along the clamping direction, and finally a maximum opening state is formed at the sideline position; the furling screw rotates reversely to make the first furling plate and the second furling plate move linearly from the furling state of the middle position to the outer side along the furling direction, and finally the maximum opening state is formed at the sideline position.

Obviously, by adjusting the reduction ratio of the gear pair or the worm and gear transmission pair installed between the clamping screw and the furling screw and adjusting the thread lead ratio between the clamping screw and the furling screw, the actually required proper size of the furling state formed by the first furling plate and the second furling plate at the middle position can be obtained. These are conventional designs and will not be described in detail here.

The first swing rod unit is arranged on the first furling plate and comprises a first swing rod and a second swing rod which are horizontally arranged.

One end of the first swing rod is movably hinged with the middle position of the first furling plate, the other end of the first swing rod faces the direction of the first pressing plate, and the first swing rod is limited by a positioning pin or a positioning block arranged on the first furling plate, so that the included angle between the first swing rod and the first furling plate is at least larger than 0 degree, the first swing rod is always positioned in the inner side area by taking the first furling plate as a boundary, and the corresponding position is a first limit position; in addition, a torsion spring for resetting the first swing rod is arranged at the movable hinged position, so that the first swing rod always obtains the acting force swinging towards the direction of the first furling plate; under the action of external force, the first swing rod can horizontally swing back and forth by less than 90 degrees from the first limit position to the direction perpendicular to the second furling plate by taking the movable hinge point as a center, and the maximum swing position is the second limit position.

One end of the second swing rod is movably hinged with the middle position of the first furling plate, the other end of the second swing rod faces the direction of the second pressing plate, and the second swing rod is limited by a positioning pin or a positioning block arranged on the first furling plate, so that the included angle between the second swing rod and the first furling plate is at least larger than 0 degree, the second swing rod is always positioned in the inner side area by taking the first furling plate as a boundary, and the corresponding position is a first limit position; in addition, a torsion spring for resetting the second swing rod is arranged at the movable hinged position, so that the second swing rod always obtains the acting force swinging towards the direction of the first furling plate; under the action of external force, the second swing rod can horizontally swing back and forth by less than 90 degrees from the first limit position to the direction perpendicular to the second furling plate by taking the movable hinge point as a center, and the maximum swing position is the second limit position.

The second swing rod unit is arranged on the second furling plate and comprises a swing rod III and a swing rod IV which are horizontally arranged.

One end of the third swing rod is movably hinged with the middle position of the second furling plate, the other end of the third swing rod faces the direction of the first pressing plate, and the third swing rod is limited by a positioning pin or a positioning block arranged on the second furling plate, so that the included angle between the third swing rod and the second furling plate is at least larger than 0 degree, the third swing rod is always positioned in the inner side area by taking the second furling plate as a boundary, and the corresponding position is a first limit position; in addition, a torsion spring for resetting the third swing rod is arranged at the movable hinged position, so that the third swing rod always obtains an acting force swinging towards the direction of the second furling plate; under the action of external force, the third swing rod can horizontally swing back and forth by less than 90 degrees from the first limit position to the direction perpendicular to the first folding plate by taking the movable hinge point as a center, and the maximum swing position is the second limit position.

One end of the fourth swing rod is movably hinged with the middle position of the second furling plate, the other end of the fourth swing rod faces the direction of the second pressing plate, and the fourth swing rod is limited by a positioning pin or a positioning block arranged on the second furling plate, so that the included angle between the fourth swing rod and the second furling plate is at least larger than 0 degree, the fourth swing rod is always positioned in the inner side area by taking the second furling plate as a boundary, and the corresponding position is a first limit position; in addition, a torsion spring for resetting the swing rod IV is arranged at the movable hinged position, so that the swing rod IV always obtains the acting force swinging towards the direction of the second furling plate; under the action of external force, the swing rod IV can horizontally swing back and forth by less than 90 degrees from the first limit position to the direction perpendicular to the first furling plate by taking the movable hinge point as a center, and the maximum swing position is the second limit position.

When the motor rotates to drive the screw rod and the guide rod to synchronously rotate in the positive direction and simultaneously drive the furling screw rod to rotate in the positive direction, the first pressing plate and the second pressing plate make relative linear displacement from the sideline position to the middle position along the clamping direction, and the first furling plate and the second furling plate make relative linear displacement from the sideline position to the middle position along the furling direction.

During the process, the inner side of the first pressing plate is respectively contacted with the non-hinged end parts of the first swing rod and the third swing rod which are positioned at the first limit position, and the inner side of the second pressing plate is respectively contacted with the non-hinged end parts of the second swing rod and the fourth swing rod which are positioned at the first limit position; and the non-hinged end parts of the first swing rod, the third swing rod and the second swing rod and the fourth swing rod are always in contact with the first pressing plate through the second pressing plate and the inner side of the second pressing plate under the action of respective torsion springs, so that the first swing rod, the third swing rod, the second swing rod and the fourth swing rod continuously swing towards the center direction.

When the first pressing plate and the second pressing plate linearly move to the middle position, the first swing rod, the third swing rod, the second swing rod and the fourth swing rod swing to the second limit position.

According to practical application scenes, when the first oscillating bar, the second oscillating bar, the third oscillating bar and the fourth oscillating bar respectively oscillate from the first limit position to the second limit position, the non-hinged ends of the first oscillating bar, the second oscillating bar, the third oscillating bar and the fourth oscillating bar synchronously oscillate the plastic film stirring the garbage bag, so that the good effect of uniform distribution in the folding direction is achieved.

After the plastic bag is subjected to a hot melting sealing process, the motor rotates to drive the clamping screw to rotate reversely, and simultaneously drives the furling screw to rotate reversely; the first pressing plate and the second pressing plate are enabled to make relative linear displacement from the middle position to the outer side along the clamping direction, and the first furling plate and the second furling plate are made relative linear displacement from the furling state of the middle position to the outer side along the furling direction.

During the process, under the action of respective torsion springs, the non-hinged end parts of the first swing rod, the third swing rod, the second swing rod and the fourth swing rod are always in contact with the inner sides of the first pressing plate and the second pressing plate, so that the first swing rod, the third swing rod, the second swing rod and the fourth swing rod swing towards the outer side direction respectively; when the first swing rod, the third swing rod, the second swing rod and the fourth swing rod respectively reach the first limit position, the swing rods do not swing any more, and the non-hinged end parts of the swing rods are respectively separated from the inner sides of the first pressing plate and the second pressing plate.

From the above, it can be known that the first swing link unit and the second swing link unit in the second folding mechanism scheme of the present application have the functions of enabling the garbage bag to be folded in the middle and simultaneously enabling the plastic films to be distributed relatively uniformly in the clamping direction, which is obviously different and superior to the prior art.

Preferably, based on the basic technical scheme, the guide rod of the clamping driving mechanism of the device is changed into a second screw rod, and the clamping mechanism is modified adaptively;

the method comprises the following steps: the clamping driving mechanism comprises a clamping screw rod, a second screw rod, a motor and a transmission mechanism.

The outer contour of the clamping screw is divided into two sections by taking the middle position as a structural boundary, wherein a left-hand thread is processed on one section, and a right-hand thread with the same lead as the left-hand thread is processed on the other section; the second screw has the same structure and parameters as the screw, and the setting direction is the same; the clamping screw and the second screw are rotatably arranged in parallel through a bearing seat and are respectively positioned on two parallel rectangular edges outside the device; the motor is tightly arranged, and the clamping screw and the second screw synchronously rotate in the same direction through the transmission mechanism.

The transmission mechanism takes one of the following forms:

form one, sprocket and chain drive form: chain wheels with the same parameters are fixedly installed at the end parts of the clamping screw rod and the second screw rod on the same side; the chain is meshed with the chain wheel to run.

And the second mode is a gear and synchronous chain transmission mode: gears with the same parameters are fixedly arranged at the end parts of the clamping screw and the second screw at the same side; the synchronous chain runs in meshing with the gear.

Form three, the gear drive form: gears with the same parameters are fixedly arranged at the end parts of the clamping screw rod and the second screw rod on the same side; the gears run in mesh through an intermediate gear.

Form four, worm gear and worm transmission form: worm gears with the same parameters are fixedly arranged at the end parts of the clamping screw rod and the second screw rod on the same side; the worm comprises two sections of spiral tooth forms which are coaxially arranged and have the same parameters, and the two sections of spiral tooth forms are respectively meshed with the worm wheel to run.

The clamping mechanism comprises a first pressing plate and a second pressing plate which are perpendicular to the clamping screw and the second screw;

the first pressing plate is arranged on one side of the left-hand threads of the clamping screw and the second screw, and threaded holes matched with the left-hand threads of the clamping screw and the second screw are respectively machined at two ends of the first pressing plate;

the second pressing plate is arranged on one side of the right-hand threads of the clamping screw and the second screw, and threaded holes matched with the right-hand threads of the clamping screw and the second screw are respectively machined at two ends of the second pressing plate;

the clamping screw and the second screw rotate synchronously, so that the first pressing plate and the second pressing plate perform relative linear displacement.

The first pressure plate and the second pressure plate have four threaded hole structures in total, wherein at least one of the threaded hole structures can be adjusted in the axial direction; this is an important feature. Because, after the first pressing plate and the second pressing plate are assembled, two planes perpendicular to the clamping direction need to have higher parallelism, so as to obtain better clamping effect. Therefore, at least one of the four threaded hole structures of the first pressure plate and the second pressure plate can be axially adjusted, so that the requirement of high parallelism is easy to realize. The simplest method for adjusting the axial position is to adopt a structure of a mounting type threaded hole (or a nut).

The clamping driving mechanism of the preferred scheme adopts a two-side screw mode, and has the comprehensive performance of good driving stability and high repetition precision.

Preferably, based on the preferable scheme, the clamping driving mechanism of the device is additionally provided with a guide rod, and the clamping mechanism is improved in adaptability; the method comprises the following steps:

and the clamping driving mechanism is provided with a clamping guide rod above or below one side of the clamping screw rod in parallel, and a second guide rod above or below one side of the second screw rod in parallel.

Inner holes which are in sliding fit with the clamping guide rod and the second guide rod are processed in positions, corresponding to the clamping guide rod and the second guide rod, of a first pressing plate and a second pressing plate of the clamping mechanism.

This preferred scheme increases on the basis that aforementioned press from both sides tight actuating mechanism adopted the both sides screw rod mode and sets up the guide bar for screw rod and supporting screw hole only need be responsible for the linear drive, and the guide effect is undertaken by the guide bar, can greatly increase the good and durability of tight actuating mechanism's of clamp drive stability.

Preferably, based on the foregoing basic technical solution, the furling mechanism of the device is arranged in one of six manners:

the folding mechanism is arranged above the first pressing plate and the second pressing plate in a fully folding mode.

The folding mechanism is arranged in a set of mode II, adopts the mode I of the folding mechanism and is in a full folding mode, and the folding mechanism is arranged below the first pressing plate and the second pressing plate.

The number of the furling mechanisms is two, the two furling mechanisms adopt the first scheme of the furling mechanism, and the furling mechanisms are in a fully-folding mode and are respectively arranged at the upper position of the first pressing plate and the lower position of the second pressing plate.

By adopting the three modes of the first setting mode, the second setting mode and the third setting mode, the sealing length of the bottom seal and the sealing length of the upper seal of the garbage bag are consistent and are the same as one side length of the original rectangular garbage bag.

The second technical scheme is a semi-folding mode, and the second technical scheme is arranged above the first pressing plate and the second pressing plate.

And the second scheme of the furling mechanism is a semi-folding mode and is arranged below the first pressing plate and the second pressing plate.

The number of the furling mechanisms is two, the two furling mechanisms adopt the scheme two of the furling mechanisms, and the furling mechanisms are in a half-folding mode and are respectively arranged at the upper position of the first pressing plate and the lower position of the second pressing plate.

By adopting three modes of setting mode four, setting mode five and setting mode six, the sealing length of the bottom seal of the garbage bag is consistent with the sealing length of the upper seal of the garbage bag, and the sealing lengths are all smaller than the side length of the original rectangular garbage bag.

Further, based on the basic technical scheme, a nozzle capable of spraying compressed air is additionally arranged on a moving hinge point of the first scheme of the furling mechanism of the device; when the first pressing plate and the second pressing plate linearly move from the outer side to the middle position, namely the clamping state is to be reached, compressed air is sprayed forwards from the nozzle, so that the plastic film of the garbage bag extends forwards and exceeds the position which is in contact with the movable hinged point before. The technical means aims to ensure that when the first pressing plate and the second pressing plate are in a clamping state, the corresponding moving hinge point is positioned at a position slightly far away from the middle position, so that unnecessary damage to the outer surface of the plastic film of the sealed garbage bag can be avoided when the garbage bag is reset and returned.

And nozzles capable of spraying compressed air are additionally arranged on the end parts of the non-hinged ends of all the swing rods of the second scheme of the furling mechanism of the device. The technical means aims to ensure that when the first pressing plate and the second pressing plate are in a clamping state, the end part of the non-hinged end of the corresponding swing rod is positioned at a position slightly far away from the middle position, so that unnecessary damage to the outer surface of the plastic film of the sealed garbage bag can be avoided when the garbage bag is reset and returned.

Further, a roller with a rotating shaft center line perpendicular to the horizontal plane is additionally arranged on the end part of the non-hinged end of all the swing rods of the second scheme of the furling mechanism of the device based on the basic technical scheme. The purpose of this scheme is to make the gyro wheel of pendulum rod and the plastic film direct contact of disposal bag, avoid causing unnecessary damage to the surface of plastic film.

Further, based on the basic technical scheme, the inner side planes of the first pressing plate and the second pressing plate of the clamping mechanism of the device are additionally provided with negative pressure adsorption devices; when the first pressing plate and the second pressing plate start to move linearly from the outer side to the middle position, the negative pressure adsorption device acts to adsorb and position the plastic film of the garbage bag, so that the plastic film of the garbage bag can be uniformly distributed in the area in contact with the inner side planes of the first pressing plate and the second pressing plate when being furled, and the uniform distribution of other areas is facilitated.

In the second scheme of the furling mechanism of the device, a negative pressure adsorption device is additionally arranged in the middle of the inner side planes of the first furling plate and the second furling plate; when the first furling plate and the second furling plate start to linearly move from the outer side to the middle position, the negative pressure adsorption device acts to adsorb and position the plastic film of the garbage bag, so that the area of the plastic film of the garbage bag, which is contacted with the middle position of the inner side plane of the first furling plate and the second furling plate, can be kept still when furling, and the plastic films in other areas are uniformly distributed.

Further, based on the basic technical scheme, the negative pressure adsorption device is additionally arranged on the bottom plate of the garbage can. The purpose of this scheme is that make intelligent garbage bin after accomplishing the new disposal bag of packing into, the bottom of disposal bag can be adsorbed in the bottom position of garbage bin for the disposal bag is when the rubbish that the quality is light, bulky is packed into, presss from both sides tightly and draws in the device in and can normal operating.

Further, based on the basic technical scheme, the outermost positions of the inner side planes of the first pressing plate and the second pressing plate of the clamping mechanism of the device are additionally provided with hanging rods; the end part area of one end of the garbage bag with the bottom used by the device is provided with a hanging hole corresponding to the position of the hanging rod; when the garbage bag is loaded, the hanging hole is penetrated into the hanging rod, so that the surfaces of the garbage bag corresponding to the inner side planes of the first pressing plate and the second pressing plate are relatively flat; when the first pressing plate and the second pressing plate start to move linearly from the outer side to the middle position, the plastic films of the garbage bags can be uniformly distributed on the inner side planes of the first pressing plate and the second pressing plate due to the fact that the hanging holes penetrate into the hanging rods, and meanwhile, the plastic films are beneficial to uniform distribution of other areas.

In the second scheme of the furling mechanism of the device, a hanging rod is additionally arranged in the middle of the inner side planes of the first furling plate and the second furling plate; the end part area of one end of the garbage bag with the bottom used by the device is provided with a hanging hole corresponding to the position of the hanging rod; when the garbage bag is put into the garbage bag, the hanging hole is penetrated into the hanging rod, when the first furling plate and the second furling plate start to linearly move from the outer side to the middle position, the plastic film of the garbage bag and the middle position of the inner side plane of the first furling plate and the second furling plate can be kept still because the hanging hole is penetrated into the hanging rod, and the plastic films in other areas are uniformly distributed.

Compared with the prior art, the garbage bag with the bottom has the advantages that:

firstly, the furling mechanism and the clamping mechanism only need to be driven by one motor, so that the cost is saved, and the structure is simplified.

And secondly, the clamping mechanism has good driving stability, good guiding precision, high repetition precision and durability.

The plastic films in the sealing area are distributed uniformly relatively by the furling mechanism, so that good basic conditions are provided for the subsequent hot-melting sealing process, and the defects that the partial sealing is not tight, the thickness of the film material at the partial sealing position is thinned and even the garbage bag is perforated easily in the garbage bag sealing process in the prior art are effectively avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings according to the provided drawings without creative efforts.

Fig. 1 to 4 are schematic structural diagrams and operation diagrams of one embodiment of the present application. In the figure: 01 clamping screw; 01a right-hand thread; 01b left-hand thread; 02 a second pressing plate; 03 a guide rod; 04a hinge rod piece I; 04b hinge rod piece II; 05 a first press plate; 06a hinge rod member III; 06b hinge rod member four; a1 open position; a3 clamp position; b1 open position; b3 clamping position; and A, clamping direction.

Fig. 5 to 9 are schematic structural and operational views of another embodiment of the present application. In the figure: 01 clamping screw; 01a right-hand thread; 01b left-hand thread; 02 a second pressing plate; 03 a guide rod; 05 a first press plate; 07 a second furling plate; 08 a first furling plate; 09 drawing the guide rod in; 10, folding the screw rod; 11a, swinging a first rod; 11b, a second swing rod; 11c, oscillating bar III; 11d, oscillating the fourth rod; a1 open position; a2 neutral position; a3 clamping position; b1 open position; b2 neutral position; b3 clamping position; c1 start position; c2 neutral position; c3 closed position; d1 start position; d2 neutral position; d3 closed position; a, clamping direction; b, folding direction.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the prior art and the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The embodiment shown in fig. 1 to 4 adopts a first scheme corresponding to the furling mechanism, and is a fully folding mode.

For the sake of clarity, the clamping drive mechanism only shows the clamping screw 01 and the guide rod 03; the motor and the transmission mechanism are not shown. It should be noted that the relative structures and relative installation positions of the motor and the transmission mechanism have been described in clear text, and the components are not shown in the drawings and do not affect the operational description of the present embodiment.

Looking at FIG. 1, it can be seen that: the clamping screw rod 01 is arranged on the left side of the figure, the middle position serves as a structural boundary, a right-handed thread 01a is arranged on the upper portion of the figure, a left-handed thread 01b is arranged on the lower portion of the figure, and a thick solid line represents a main shaft portion of the clamping screw rod 01; the guide rod 03 is disposed on the right side of the drawing. As can be seen from the foregoing, the clamping screw 01 is horizontally rotatably provided through a bearing block, and the guide rod 03 is provided in parallel with the clamping screw 01.

The first platen 05 (below) and the second platen 02 (above) of the clamping mechanism are shown. As can be seen from the above, the first pressing plate 05 and the second pressing plate 02 are respectively provided with a threaded hole structure which is slidably matched with the left-hand thread 01b in the left side of the figure, and are respectively provided with an inner hole structure which is slidably matched with the guide rod 03 in the right side; the first pressure plate 05 and the second pressure plate 02 are currently in the open position b1 and the open position a1, respectively; the illustrated vertical travel direction is the clamping direction a.

The first and second hinges of the gathering mechanism are shown. The first hinge is shown on the right side of the figure and consists of two hinge rod pieces (a hinge rod piece 04 a; a hinge rod piece 04 b) which are horizontally arranged and have the same length, and one end of each hinge rod piece is hinged with each other, and the hinge point is called a moving hinge point; one end of the first hinge is hinged to the right end of the first pressing plate 05, and the other end is hinged to the right end of the second pressing plate 02 on the same side.

The second hinge is located on the left side of the figure and is composed of two hinge rods (three hinge rods 06 a; four hinge rods 06 b) which are horizontally arranged and have the same length and one of the ends of which is hinged to each other, and the hinge point is called a moving hinge point, one end of the first hinge is hinged to the first pressure plate 05 at the left end, and the other end is hinged to the left end of the second pressure plate 02 on the same side.

It can be seen that when the first and second

pressing plates

05 and 02 are in the maximum opening state, the first and second hinges respectively have the moving hinge point as the vertex and the inner included angle towards the center of the trash can is at the maximum but less than 180 °.

The first hinge and the second hinge respectively use the moving hinge point as a vertex, face the center of the garbage can and have the maximum internal included angle less than 180 degrees, which are necessary conditions for the normal operation of the furling mechanism.

Fig. 2 shows a horizontal cross-sectional profile of the trash bag in the state of fig. 1 at the level of the first and

second press plates

05, 02; the outline of the thick solid line is a plastic film entity enclosed by the inner sides of the first pressing plate 05, the second pressing plate 02, the first hinge and the second hinge, and the reticular area is the inner volume area of the garbage bag.

Fig. 3 shows that the state shown in fig. 1 is taken as a starting point, the clamping screw 01 and the guide rod 03 synchronously rotate clockwise, so that the first pressing plate 05 linearly displaces from bottom to top, and the second pressing plate 02 linearly displaces from top to bottom; finally, the first pressure plate 05 reaches the clamping position b3 from the open position b1, and the second pressure plate 02 reaches the clamping position a3 from the open position a1, so that the first pressure plate 05 and the second pressure plate 02 are in a clamped state. At the moment, the first hinge takes the moving hinge point as a vertex, and an inner included angle facing the center of the garbage can is at a minimum value but is larger than 0 degree; the second hinge has an inner angle toward the center of the trash can at a minimum value but greater than 0 ° with the moving hinge point as a vertex.

Fig. 4 shows a horizontal cross-sectional profile of the trash bag in the state of fig. 3 at the level of the first and

second press plates

05, 02; the outline of the thick solid line is a plastic film entity of the garbage bag enclosed by the inner sides of the first pressing plate 05, the second pressing plate 02, the first hinge and the second hinge, the thickest position of the plastic film of the garbage bag is four layers, the thinnest position of the plastic film of the garbage bag is two layers, the key point is that the garbage bag is not folded randomly, and the distribution is relatively uniform.

It can be inferred that the negative pressure adsorption structure is arranged in the area of the first pressing plate 05 and the second pressing plate 02 facing the solid side of the garbage bag, so that the solid side of the garbage bag can be ensured not to generate wrinkles at least at the position close to the first pressing plate 05 and the second pressing plate 02; and the moving hinge points of the first hinge and the second hinge continuously push the middle point of the plastic film of the garbage bag, so that the situation that the moving hinge points of the first hinge and the second hinge correspond to the plastic film of the garbage bag and can be uniformly distributed when moving outwards and inwards is ensured.

The second embodiment of the folding mechanism shown in fig. 5 to 9 is a half-folding mode.

Similar to the previous embodiments, the clamping drive mechanism is shown with only the clamping screw 01, the guide rod 03; the motor and the transmission mechanism are not shown. It should be noted that the relative structures and relative installation positions of the motor and the transmission mechanism have been described in clear text, and the components are not shown in the drawings and do not affect the operational description of the present embodiment.

Looking at FIG. 5, it can be seen that: the clamping screw rod 01 is arranged on the left side of the figure, the middle position serves as a structural boundary, a right-handed thread 01a is arranged on the upper portion of the figure, a left-handed thread 01b is arranged on the lower portion of the figure, and a thick solid line represents a main shaft portion of the clamping screw rod 01; as is apparent from the above description, the guide rod 03 is provided on the right side of the drawing, the clamp screw 01 is rotatably provided horizontally via a bearing block, and the guide rod 03 is provided parallel to the clamp screw 01.

The first platen 05 (below) and the second platen 02 (above) of the clamping mechanism are shown. As can be seen from the above, the first pressing plate 05 and the second pressing plate 02 are respectively provided with a threaded hole structure which is slidably matched with the left-hand thread 01b in the left side of the figure, and are respectively provided with an inner hole structure which is slidably matched with the guide rod 03 in the right side; the first pressure plate 05 and the second pressure plate 02 are currently in the open position b1 and the open position a1, respectively; the drawing shows that the up-down running direction is the clamping direction a and the left-right running direction is the closing direction B.

The drawing shows a drawing screw 10, a drawing guide rod 09, a first drawing plate 08, a second drawing plate 07, a first swing link unit and a second swing link unit of the drawing mechanism; the intermeshing, right-angle-driven helical gear pair or bevel gear pair or worm gear pair arranged between the closing screw 10 and the clamping screw 01 or the guide rod 03 is not shown. It should be noted that the helical gear pair or the bevel gear pair or the worm gear and worm gear pair is a common transmission component, and the related structure and the relative installation position have been described in clear text in the foregoing, and these components are not shown in the drawings and do not affect the operational description of the embodiment.

Looking at FIG. 5, it can be seen that: the furling screw 10 is arranged below the drawing, the horizontal projection is vertically crossed with the clamping screw 01 and the guide rod 03 of the clamping driving mechanism, the clamped screw 01 is driven to rotate, the middle position is used as a structural boundary, the left side of the drawing is a right-handed thread, the right side of the drawing is a left-handed thread, and the thick solid line represents the main shaft part of the furling screw 10.

It can be seen that the gathering guide bar 09 is arranged above the figure, the horizontal projection of the centre line being parallel to the centre line of the gathering screw 10.

The first furling plate 08 is arranged on the right side of the figure, the lower end of the first furling plate is provided with a threaded hole structure matched with left-handed threads of the furling screw 10, the upper end of the first furling plate is provided with an inner hole structure matched with the furling guide rod 09 in a sliding manner, and the arrangement direction of the first furling plate is vertical to the furling direction B; the second furling plate 07 is arranged on the left side of the figure, a threaded hole structure matched with the right-handed thread of the furling screw 10 is manufactured at the lower end of the second furling plate, an inner hole structure matched with the furling guide rod 09 in a sliding mode is processed at the upper end of the second furling plate, and the arrangement direction of the second furling plate is perpendicular to the furling direction B.

It can be seen in the figure that: the first swing rod unit is positioned on the right side, is arranged on the first furling plate 08 and comprises a first swing rod 11a and a second swing rod 11b which are horizontally arranged;

one end of the first oscillating bar 11a is movably hinged with the middle position of the first furling plate 08, and the other end of the first oscillating bar 11a faces the direction of the first pressing plate 05 and is limited by a positioning pin or a positioning block (not shown) arranged on the first furling plate 08, so that the included angle between the first oscillating bar 11a and the first furling plate 08 is at least larger than 0 degrees, the first oscillating bar 11a is always positioned in the inner side area by taking the first furling plate 08 as a boundary, and the corresponding position is a first limit position (namely the position shown in fig. 5 with the end facing downwards); in addition, a torsion spring (not shown in the figure) for resetting the first swing rod 11a is arranged at the movable hinged position, so that the first swing rod 11a always obtains acting force swinging towards the first closing plate 08; under the action of external force, the first swing link 11a can swing horizontally by less than 90 ° around the movable hinge point in a direction perpendicular to the second closing plate 07, and the maximum swing position is the second limit position (i.e., the end portion is toward the left side as shown in fig. 8).

One end of the second swing link 11b is movably hinged with the middle position of the first furling plate 08, and the other end of the second swing link faces the direction of the second pressing plate 02, and is limited by a positioning pin or a positioning block (not shown in the figure) arranged on the first furling plate 08, so that the included angle between the second swing link 11b and the first furling plate 08 is at least larger than 0 degrees, the second swing link 11b is always positioned in the inner side area by taking the first furling plate 08 as a boundary, and the corresponding position is a first limit position (namely the position shown in fig. 5 with the end facing upwards); in addition, a torsion spring (not shown in the figure) for resetting the second swing rod 11b is arranged at the movable hinged position, so that the second swing rod 11b always obtains the acting force swinging towards the direction of the first furling plate 08; under the action of external force, the second swing link 11b can swing horizontally by less than 90 ° around the movable hinge point in a direction perpendicular to the second closing plate 07, and the maximum swing position is the second limit position (i.e., the end portion is toward the left side as shown in fig. 8).

It can be seen in the figure that: the second swing link unit is positioned on the left side, is arranged on the second furling plate 07 and comprises a swing link three 11c and a swing link four 11d which are horizontally arranged;

one end of the swing link third 11c is movably hinged with the middle position of the second furling plate 07, and the other end faces the direction of the first pressing plate 05, and is limited by a positioning pin or a positioning block (not shown in the figure) arranged on the second furling plate 07, so that the included angle between the swing link third 11c and the second furling plate 07 is at least larger than 0 degrees, the swing link third 11c is always positioned in the inner side area by taking the second furling plate 07 as a boundary, and the corresponding position is a first limit position (namely the position shown in fig. 5 with the end facing downwards); in addition, a torsion spring (not shown in the figure) for resetting the swing link three 11c is arranged at the movable hinge position, so that the swing link three 11c always obtains an acting force swinging towards the direction of the second furling plate 07; under the action of external force, the third swing link 11c can swing horizontally by less than 90 ° around the movable hinge point in a direction perpendicular to the first closing plate 08, and the maximum swing position is the second limit position (i.e., the end portion is toward the right side as shown in fig. 8).

One end of the swing link four 11d is movably hinged with the middle position of the second furling plate 07, and the other end faces the direction of the second pressing plate 02, and is limited by a positioning pin or a positioning block (not shown in the figure) arranged on the second furling plate 07, so that the included angle between the swing link four 11d and the second furling plate 07 is at least larger than 0 degrees, the swing link four 11d is always positioned in the inner side area by taking the second furling plate 07 as a boundary, and the corresponding position is a first limit position (namely the position shown in fig. 5 with the end facing upwards); in addition, a torsion spring (not shown in the figure) for resetting the swing rod four 11d is arranged at the movable hinged position, so that the swing rod four 11d always obtains an acting force swinging towards the direction of the second furling plate 07; under the action of external force, the fourth swing link 11d can swing horizontally by less than 90 ° around the movable hinge point in a direction perpendicular to the first closing plate 08, and the maximum swing position is the second limit position (i.e., the end portion is toward the right side as shown in fig. 8).

Fig. 5 shows that the first pressing plate 05 and the second pressing plate 02 are in the maximum opening state, and the first closing plate 08 and the second closing plate 07 are in the maximum opening state;

fig. 6 shows a horizontal cross-sectional profile of the trash bag in the state of fig. 5 at the level of the first and

second platens

05, 02; the outline of the thick solid line is a plastic film entity of the garbage bag enclosed by the inner sides of the first pressing plate 05, the second pressing plate 02, the first furling plate 08, the second furling plate 07, the first swing rod 11a, the second swing rod 11b, the third swing rod 11c and the fourth swing rod 11d, and the net-shaped area is an internal volume area of the garbage bag.

From the foregoing, it can be seen that:

when the motor rotates, the clamping screw rod 01 is driven to rotate in the positive direction, and the furling screw rod 10 is driven to rotate in the positive direction; the clamping screw 01 rotates forward to enable the first pressing plate 05 and the second pressing plate 02 to make relative linear displacement from the sideline position to the inner side along the clamping direction A (shown in the figure that the first pressing plate 05 is from bottom to top and the second pressing plate 02 is from top to bottom), and finally a clamping state is formed at the middle position; the retracting screw 10 rotates forward to make the first retracting plate 08 and the second retracting plate 07 move linearly from the sideline position to the inner side along the retracting direction B (the drawing shows that the first retracting plate 08 moves from right to left and the second retracting plate 07 moves from left to right), and finally, a retracted state with a smaller size is formed at the middle position.

Fig. 7 shows that, starting from the state shown in fig. 5, the clamping screw 01 rotates clockwise, and at the same time drives the furling screw 10 to rotate forward; the first pressing plate 05 is linearly displaced from bottom to top, the second pressing plate 02 is linearly displaced from top to bottom, and the first furling plate 08 is linearly displaced from right to left and the second furling plate 07 is linearly displaced from left to right; the state shown in fig. 7 is: the first pressure plate 05 reaches the intermediate position b2 from the open position b1, and the second pressure plate 02 reaches the intermediate position a2 from the open position a 1; the first closing plate 08 reaches the intermediate position d2 from the starting position d1, and the second closing plate 07 reaches the intermediate position c2 from the open position c 1; the end parts of the first oscillating bar 11a and the third oscillating bar 11c are about to contact with the inner side surface of the first pressing plate 05; the ends of the second swing link 11b and the fourth swing link 11d are about to contact the inner side surface of the second pressing plate 02.

FIG. 8 shows the state of FIG. 7, in which the first presser plate 05 is linearly displaced from the bottom to the top from the intermediate position b2 to the clamping position b 3; the second pressing plate 02 is linearly displaced from the top to the bottom from the intermediate position a2 to the clamping position a 3; the first furling plate 08 linearly displaces from right to left and the second furling plate 07 from left to right, and respectively reaches a furling position d3 and a furling position c3 from a middle position d2 and a middle position c 2; correspondingly, the first swing link 11a, the second swing link 11b and the third swing link 11c and the fourth swing link 11d reach the second limit position from the first limit position.

Fig. 9 shows a horizontal cross-sectional profile of the trash bag in the state of fig. 8 at the level of the first and

second pressboards

05, 02; the outline of the thick solid line is a plastic film entity of the garbage bag enclosed by the inner sides of the first pressing plate 05, the second pressing plate 02, the first furling plate 08, the second furling plate 07, the first swing rod 11a, the second swing rod 11b, the third swing rod 11c and the fourth swing rod 11d, the thickest position of the plastic film of the garbage bag is six layers, the thinnest position is two layers, the key point is that the garbage bag is not folded randomly, and the garbage bag is distributed relatively uniformly.

It can be inferred that the negative pressure adsorption structure is arranged in the area of the first pressing plate 05 and the second pressing plate 02 facing the solid edges of the garbage bags, and the negative pressure adsorption structure is arranged in the middle of the first folding plate 08 and the second folding plate 07, so that the solid edges of the garbage bags can be ensured not to generate wrinkles at least at the positions close to the first pressing plate 05 and the second pressing plate 02, and the positions where the plastic films of the garbage bags are folded inside can be uniformly distributed.

As known from the basic common knowledge of the industry, the inner sides of the first pressing plate and the second pressing plate of the technical scheme of the application are respectively provided with parts required by hot melting sealing, so that the function of automatic hot melting sealing can be achieved. The parts and production process required for hot-melt sealing of the plastic film belong to the conventional technology in the industry, and are not described herein.

Those skilled in the art can readily appreciate from the foregoing description, by referring to the accompanying drawings and the associated written description, that matters not referred to in the drawings and the associated written description are not included. And will not be described in detail herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a garbage bag with a bottom draws in and clamping device placed in middle which characterized in that: comprises a clamping driving mechanism, a clamping mechanism and a furling mechanism;

the clamping driving mechanism comprises a clamping screw rod, a guide rod, a motor and a transmission mechanism;

the outer contour of the clamping screw is divided into two sections by taking the middle position as a structural boundary, wherein a left-hand thread is processed on one section, a right-hand thread with the same lead as the left-hand thread is processed on the other section, and the clamping screw is rotatably and horizontally arranged at one sideline position outside the device through a bearing seat; the guide rod is horizontally arranged at the other side line position of the outer side of the device, which is opposite to the clamping screw rod, and the central line of the guide rod is parallel to the central line of the clamping screw rod; the motor is fixedly arranged, and the clamping screw rod is rotated through the transmission mechanism;

the clamping mechanism comprises a first pressing plate and a second pressing plate which are perpendicular to the clamping screw and the guide rod;

the first pressing plate is arranged on one side of the left-hand thread of the clamping screw, and the two ends of the first pressing plate are respectively provided with the left-hand thread matched with the clamping screw and an inner hole structure matched with the guide rod in a sliding manner;

the second pressing plate is arranged on one side of the right-handed thread of the clamping screw, and the two ends of the second pressing plate are respectively provided with the right-handed thread matched with the clamping screw and an inner hole structure matched with the guide rod in a sliding manner;

the clamping screw rotates to enable the first pressing plate and the second pressing plate to make relative linear displacement;

the furling mechanism adopts one of the following schemes:

scheme one, a full folding mode; the furling mechanism comprises a first hinge and a second hinge;

the first hinge is composed of two hinge rod pieces which are horizontally arranged, have the same length and one end parts are mutually hinged, and the hinge point is called as a moving hinge point; one end part of the first hinge is hinged with the first pressure plate at one end part, and the other end part of the first hinge is hinged with the end part of the second pressure plate at the same side;

the second hinge and the first hinge are same in structure and are symmetrically arranged;

scheme two, a half-folding mode; the folding mechanism comprises a folding screw, a folding guide rod, a first folding plate, a second folding plate, a first swing rod unit and a second swing rod unit;

the furling screw is rotatably arranged on one of rectangular edges perpendicular to the screw outside the device through a bearing seat, the outer contour is divided into two sections by taking the middle position as a structural boundary, one section is processed with left-handed threads, the other section is processed with right-handed threads with the same lead as the left-handed threads, the horizontal projection is vertically intersected with the clamping screw, a helical gear pair or a bevel gear pair or a worm and gear transmission pair which are mutually meshed and driven at right angle are arranged between the furling screw and the clamping screw, and the furling screw is driven to rotate by the clamping screw;

the furling guide rod is arranged on the other rectangular side of the outer side of the device opposite to the furling screw rod, and the horizontal projection of the central line is parallel to the central line of the furling screw rod;

the arrangement directions of the first furling plate and the second furling plate are vertical to the furling screw rod;

the first furling plate is arranged on one side of the left-hand thread of the furling screw, a threaded hole structure matched with the left-hand thread of the furling screw is manufactured at one end of the first furling plate, and an inner hole structure matched with the furling guide rod in a sliding mode is manufactured at the other end of the first furling plate; the second furling plate is arranged on one side of the right-hand thread of the furling screw rod, a threaded hole structure matched with the right-hand thread of the furling screw rod is processed at one end of the second furling plate, and an inner hole structure matched with the furling guide rod in a sliding mode is manufactured at the other end of the second furling plate;

the first swing rod unit is arranged on the first furling plate and comprises a first swing rod and a second swing rod which are horizontally arranged;

one end of the first swing rod is movably hinged with the middle position of the first furling plate, the other end of the first swing rod faces the direction of the first pressing plate and is limited by a positioning pin or a positioning block arranged on the first furling plate, and the corresponding position of the first swing rod is a first limit position; a torsion spring for resetting the first swing rod is arranged at the movable hinged position, so that the first swing rod always obtains an acting force swinging towards the first furling plate, and the maximum swinging position is a second limit position;

one end of the second swing rod is movably hinged with the middle position of the first furling plate, the other end of the second swing rod faces the direction of the second pressing plate and is limited by a positioning pin or a positioning block arranged on the first furling plate, and the corresponding position of the second swing rod is a first limit position; a torsion spring for resetting the second swing rod is arranged at the movable hinged position, so that the second swing rod always obtains an acting force swinging towards the direction of the second furling plate, and the maximum swinging position is a second limit position;

the second swing rod unit is arranged on the second furling plate and comprises a swing rod III and a swing rod IV which are horizontally arranged;

one end of the third swing rod is movably hinged with the middle position of the second furling plate, the other end of the third swing rod faces the direction of the first pressing plate, the third swing rod is limited by a positioning pin or a positioning block arranged on the second furling plate, and the corresponding position of the third swing rod is a first limit position; in addition, a torsion spring for resetting the third swing rod is arranged at the movable hinged position, so that the third swing rod always obtains an acting force swinging towards the direction of the second furling plate, and the maximum swinging position is a second limit position;

one end of the fourth swing rod is movably hinged with the middle position of the second furling plate, the other end of the fourth swing rod faces the direction of the second pressing plate and is limited by a positioning pin or a positioning block arranged on the second furling plate, and the corresponding position of the fourth swing rod is a first limit position; in addition, a torsion spring for resetting the swing rod four is arranged at the movable hinge joint position, so that the swing rod four always obtains an acting force swinging towards the direction of the second furling plate, and the maximum swinging position is a second limit position.

2. A closed-end garbage bag centered collecting and clamping device as defined in claim 1, wherein the guiding rod of the clamping driving mechanism of said device is changed into a second screw rod, and the clamping mechanism is modified adaptively; the method comprises the following steps:

the clamping driving mechanism comprises a clamping screw, a second screw, a motor and a transmission mechanism;

the outer contour of the clamping screw is divided into two sections by taking the middle position as a structural boundary, wherein a left-hand thread is processed on one section, and a right-hand thread with the same lead as the left-hand thread is processed on the other section; the second screw has the same structure and parameters as the screw, and the setting direction is the same; the clamping screw and the second screw are rotatably arranged in parallel through a bearing seat and are respectively positioned on two parallel rectangular edges outside the device; the motor is fixedly arranged, and the clamping screw and the second screw synchronously rotate in the same direction through the transmission mechanism;

the transmission mechanism takes one of the following forms:

form one, sprocket and chain drive form: chain wheels with the same parameters are fixedly installed at the end parts of the clamping screw rod and the second screw rod on the same side; the chain is meshed with the chain wheel to run;

and the second mode is a gear and synchronous chain transmission mode: gears with the same parameters are fixedly arranged at the end parts of the clamping screw rod and the second screw rod on the same side; the synchronous chain is meshed with the gear to run;

form three, the gear drive form: gears with the same parameters are fixedly arranged at the end parts of the clamping screw rod and the second screw rod on the same side; the gears run in a meshing manner through intermediate gears;

form four, worm gear and worm transmission form: worm gears with the same parameters are fixedly arranged at the end parts of the clamping screw rod and the second screw rod on the same side; the worm comprises two sections of spiral tooth forms which are coaxially arranged and have the same parameters, and the two sections of spiral tooth forms are respectively meshed with the worm wheel to run;

3. The centered folding and clamping device for the garbage bags with bottoms as claimed in claim 2, wherein a guide rod is additionally arranged on a clamping driving mechanism of the device, and the clamping mechanism is improved in adaptability; the method comprises the following steps:

the clamping driving mechanism is provided with a clamping guide rod above or below one side of the clamping screw rod in parallel, and a second guide rod above or below one side of the second screw rod in parallel;

4. A centered collapsing and clamping device for garbage bags with bottoms as claimed in claim 1, wherein the collapsing mechanism of said device is disposed in one of six ways:

the first setting mode is that the number of the furling mechanisms is one, and the first setting mode adopts the first scheme of the furling mechanisms and is arranged above the first pressing plate and the second pressing plate;

the first folding mechanism is adopted and is arranged below the first pressing plate and the second pressing plate;

the number of the furling mechanisms is two, and the two furling mechanisms adopt the first scheme of the furling mechanism and are respectively arranged at the upper position of the first pressure plate and the lower position of the second pressure plate;

the setting mode is four, the number of the furling mechanisms is one, the scheme II of the furling mechanisms is adopted and is in a half-folding mode, and the furling mechanisms are arranged above the first pressing plate and the second pressing plate;

the second scheme of the furling mechanism is adopted, and the second scheme is arranged below the first pressing plate and the second pressing plate;

the number of the furling mechanisms is two, and the two furling mechanisms are respectively adopted in the scheme two of the furling mechanisms and are respectively arranged at the upper position of the first pressing plate and the lower position of the second pressing plate.

5. A closed-end garbage bag centering and closing and clamping device as defined in claim 1, wherein a nozzle capable of spraying compressed air is additionally installed above a moving hinge point of a first solution of the closing mechanism of the device;

and nozzles capable of spraying compressed air are additionally arranged on the end parts of the non-hinged ends of all the swing rods of the second scheme of the furling mechanism of the device.

6. A bottomed garbage bag centrally drawing and clamping device as defined in claim 1, wherein a roller having a rotation shaft with a center line perpendicular to the horizontal plane is additionally installed on the end of the non-hinged end of all the swing links of the second embodiment of the drawing mechanism of the device.

7. A central closing and clamping device for garbage bags with bottoms as claimed in claim 1, wherein the inner side planes of the first pressing plate and the second pressing plate of the clamping mechanism of the device are additionally provided with negative pressure adsorption devices; and in the second scheme of the furling mechanism, a negative pressure adsorption device is additionally arranged in the middle of the inner side planes of the first furling plate and the second furling plate.

8. A centered closing and clamping device for garbage bags with bottoms as defined in claim 1, wherein a negative pressure suction device is additionally installed on the bottom plate of the garbage can.

9. A centered collecting and clamping device for garbage bags with bottoms as claimed in claim 1, wherein the outermost positions of the inner side planes of the first and second pressing plates of the clamping mechanism of the device are additionally provided with hanging rods; the end part area of one end of the garbage bag with the bottom used by the device is provided with a hanging hole corresponding to the position of the hanging rod;

in the second scheme of the furling mechanism of the device, a hanging rod is additionally arranged in the middle of the inner side planes of the first furling plate and the second furling plate; the end part area of one end of the garbage bag with the bottom used by the device is provided with a hanging hole corresponding to the position of the hanging rod.