CN110548573A

CN110548573A - paper scrap automatic packing paper shredder and paper scrap automatic packing method of paper shredder

Info

Publication number: CN110548573A
Application number: CN201910845036.2A
Authority: CN
Inventors: 熊应杰; 李钦灿; 李勇
Original assignee: Dongguan Bangze Electronics Co Ltd
Current assignee: Dongguan Bangze Electronics Co Ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2019-12-10
Anticipated expiration: 2039-09-07
Also published as: CN110548573B

Abstract

the invention discloses a paper scrap automatic packing paper shredder and a paper scrap automatic packing method of the paper shredder, compared with the prior art, the invention has the advantages that: the automatic bag discharging box is arranged at the upper end of the barrel body and used for storing the paper scrap packaging and collecting bag, the paper scrap packaging and collecting bag is automatically conveyed through the automatic bag conveying device, the paper scrap packaging and collecting bag is sealed and fused through the bag body sealing and fusing device, whether the paper scrap packaging and collecting bag is conveyed in place or not is automatically detected, full-automatic bag conveying is achieved, the automation degree is high, and the use is convenient.

Description

paper scrap automatic packing paper shredder and paper scrap automatic packing method of paper shredder

Technical Field

The invention relates to the technical field of paper shredders, in particular to a paper shredder for automatically packaging paper scraps and a paper shredder paper scrap automatic packaging method.

Background

The paper shredder is used for shredding documents and other articles, and a garbage can is arranged at the lower part of a paper shredder head of the paper shredder and receives dropped paper scraps through the garbage can. However, the paper scraps can fly around due to the static adhesion on the wall of the barrel, which is difficult to clean and inconvenient to use. On the other hand, the upper part or the side surface of the trash can is generally provided with electronic components such as a detector, an inductor or an inductive switch and the like, and the electronic components are used for detecting the height of paper scraps in the trash can or for special purposes, and the paper scraps can adhere to the surface of the detector to cause the detector to fail.

disclosure of Invention

aiming at the defects in the prior art, the invention aims to provide a paper shredder for automatically packing wastepaper and a method for automatically packing the wastepaper of the paper shredder.

In order to achieve the purpose, the invention adopts the technical scheme that: the automatic paper scrap packing method for paper shredder includes the following steps,

mounting an automatic bag outlet box, namely clamping the automatic bag outlet box storing the paper scrap packaging and collecting bag at the upper part of a barrel body or the bottom of a paper shredder head, pulling the paper scrap packaging and collecting bag in the automatic bag outlet box outwards through a bag outlet arranged around the automatic bag outlet box and downwards penetrating through a paper scrap collecting opening arranged in the middle of the automatic bag outlet box, and forming a paper falling opening below a chip removal opening of the paper shredder at the upper part of the paper scrap packaging and collecting bag output from the paper scrap packaging and collecting bag in the automatic bag outlet box;

a hot melting sealing fusing step, namely, hot melting and sealing the bag body of the paper scrap packaging and collecting bag extending to the lower part of the automatic bag outlet box through a bag body sealing fusing device arranged below the automatic bag outlet box, so that the paper scrap packaging and collecting bag forms a first hot melting sealing part and seals the lower part of the first hot melting sealing part;

an automatic bag placing step, namely, a paper scrap packaging and collecting bag is conveyed downwards into the barrel body through an automatic bag conveying device arranged at the paper shredder head or at the lower part of the barrel body;

a bag body detection step, wherein at least one electric induction sheet or dielectric sheet set electrically connected with the electric parameter detection unit is arranged on the side surface and/or the inner bottom surface of the barrel body, the electric parameter of the electric induction sheet or the dielectric sheet set is detected by the electric parameter detection unit,

The electrical parameter detecting unit continuously detects or detects electrical parameters of the electric induction sheet or the dielectric sheet group at intervals for a plurality of times during the automatic bag placing step,

in the process of executing the automatic bag placing step, the electric parameter detection unit continuously or repeatedly transmits a bag body parameter signal at intervals to the control unit in the control circuit, wherein the bag body parameter signal at least comprises a bag falling state representing the paper scrap packaging and collecting bag and/or a bag body shape;

stopping the bag placing step, receiving the bag body parameter signal by the control unit in the process of executing the automatic bag placing step and automatically controlling the working state of the automatic bag feeding device,

When the bag parameter signal received by the control unit is smaller than the set bag parameter threshold value, the control unit controls the automatic bag feeding device to keep electrifying and work and continuously feed the paper scrap packaging and collecting bag downwards into the barrel body,

when the bag body parameter signal received by the control unit is larger than the bag body parameter threshold value, the control unit generates an electric control signal or controls the automatic bag feeding device to disconnect the power supply connection or disconnect the power supply connection in a delayed manner;

a paper shredding step, namely, feeding paper through a paper inlet on the upper part of a paper shredder head, shredding the paper through a shredding knife rod arranged in the paper shredder head, enabling paper scraps formed after shredding through the shredding knife rod to downwards fall into a paper scrap collecting port of an automatic bag outlet box through a scrap discharge port arranged below the shredding knife rod, enabling all the paper scraps to downwards fall into a paper scrap packaging and collecting bag through a paper falling opening, and collecting the paper scraps through a paper scrap packaging and collecting bag with a lower part sealed and an upper part opened;

And a bag sealing and cutting step, namely, a bag body sealing and fusing device is used for hot-melting and sealing the upper bag body of the paper scrap packaging and collecting bag extending to the lower part of the automatic bag outlet box and forming a second hot-melting sealing part, and a cutting mechanism or a fusing mechanism is used for cutting off the second hot-melting sealing part or the bag body above the second hot-melting sealing part.

furthermore, the bag body position and/or the bag body shape of the paper scrap packaging and collecting bag are/is detected and judged in an auxiliary mode through a plurality of groups of opposite type photoelectric sensors which are arranged at different height positions on the side surface of the barrel body and/or different positions on the inner bottom surface of the barrel body;

the control unit receives photoelectric sensing signals of the corresponding reflective photoelectric sensors, and after the control unit receives the photoelectric sensing signals, the control unit sends a bag parameter signal to a bag falling state indicating device arranged on the paper shredder and/or controls the working state of the automatic bag feeding device;

the bag body parameter signals at least comprise position signals of the bottom of the paper scrap packaging and collecting bag and position information of the bag edge of the paper scrap packaging and collecting bag extending to the bottom;

the bag falling state or the bag shape of the wastepaper packaging and collecting bag conveyed into the barrel body is indicated or simulated and displayed by the bag falling state indicating device;

The combined opposite photoelectric sensors are used for detecting the falling state or the bag body shape of the paper scrap packaging and collecting bag in a combined mode, any one of the following three photoelectric sensing detection modes is selected, any two of the three photoelectric sensing detection modes are used in a combined mode or any three of the three photoelectric sensing detection modes are used in a combined mode,

1) sensing the position reached by the bottom of the paper scrap packaging and collecting bag through opposite type photoelectric sensors arranged at different height positions on the side surface of the barrel body, respectively arranging at least one group of opposite type photoelectric sensors at a plurality of different height positions on the side surface of the barrel body, and respectively arranging photoelectric signal transmitting parts and photoelectric signal receiving parts of the opposite type photoelectric sensors in corresponding directional shielding chambers on the side surface of the barrel body;

2) Sensing the position where the bag edge of the paper scrap packaging and collecting bag extends to by a plurality of groups of opposite-type photoelectric sensors which are arranged at the same height position on the side surface of the barrel body at intervals in the front-back direction, arranging a plurality of groups of opposite-type photoelectric sensors at the same height position on the side surface of the barrel body at intervals in the front-back direction, and respectively arranging photoelectric signal transmitting parts and photoelectric signal receiving parts of the opposite-type photoelectric sensors in corresponding directional shielding chambers on the side surface of the barrel body;

3) sensing the position where the bag edge of the paper scrap packaging and collecting bag extends through a plurality of groups of opposite-emitting photoelectric sensors which are arranged at the same height position on the inner bottom surface of the barrel body and are spaced front and back, arranging a plurality of groups of opposite-emitting photoelectric sensors at intervals on a plurality of positions on the inner bottom surface of the barrel body, and respectively arranging photoelectric signal transmitting parts and photoelectric signal receiving parts of the opposite-emitting photoelectric sensors in corresponding directional shielding chambers on the inner bottom surface of the barrel body; wherein, the directional shielding chamber positioned on the side surface of the barrel body adopts a horizontally arranged column hole or a horizontally arranged flat groove; the directional shielding chamber positioned on the inner bottom surface of the barrel body adopts a vertically arranged column hole or a vertically arranged flat groove; the partition board or the wall body in each directional shielding chamber extends outwards and exceeds the photoelectric signal transmitting part and the photoelectric signal receiving part of the corresponding opposite emission type photoelectric sensor installed in the directional shielding chamber, or the photoelectric signal transmitting part and the photoelectric signal receiving part of each opposite emission type photoelectric sensor are respectively retracted in the directional shielding chamber;

the photoelectric signal emission direction and the photoelectric signal coverage shape of the photoelectric signal emission part of each emission type photoelectric sensor are respectively shielded or limited by a partition plate or a wall body arranged in the directional shielding chamber, and the photoelectric signal coverage area of each emission type photoelectric sensor is in a cylindrical shape or a sheet shape;

the signal receiving direction of the photoelectric signal receiving part of each opposite type photoelectric sensor is respectively shielded or limited by a partition plate or a wall body arranged in the directional shielding chamber, so that the mutual interference of photoelectric signals of different groups of opposite type photoelectric sensors is avoided.

further, in the step of installing the automatic bag outlet box, the automatic bag outlet box comprises a frame with a middle part hollowed to form the paper scrap collecting opening, and the frame is in a circular ring body shape or a shape like a Chinese character 'hui', so that the width of the paper scrap collecting opening is not less than the width of the chip removal opening, and the length of the paper scrap collecting opening is not less than the length of the chip removal opening;

the paper scrap packaging and collecting bag is a through bag with a continuous bag body and an opening only at the end part;

The inner cavity of the frame is set into a storage bag inner cavity in a ring body shape or a 'return' shape, a bag body of the wastepaper packaging and collecting bag is folded in a Z shape and is stored in the storage bag inner cavity, and then the wastepaper packaging and collecting bag which is continuous along the length direction, is in a cylinder shape after being unfolded and is used for continuous output is stored in the storage bag inner cavity;

the paper scrap packaging and collecting bag is outwards output through a bag outlet which is arranged on the inner side of the frame and surrounds the frame for one circle, and the bag outlet is designed on the inner side, the bottom or the outer side of the frame, so that the formed paper falling opening is larger than the scrap discharging opening;

arranging an installation position at the bottom of the shredder head or the upper part of the barrel body, clamping the frame in the installation position at the upper part of the barrel body, and enabling the top surface, the side surface or the bottom surface of the frame to be in sealing fit or positioning fit with the corresponding joint surfaces of the installation position;

In the step of automatically placing the bags, the automatic bag feeding device selects any one or two of the following three mounting mechanisms,

1) The automatic bag feeding device adopts a mechanical bag pressing mechanism arranged inside or at the bottom of the paper shredder head,

the mechanical bag pressing mechanism controls at least one bag pushing mechanism capable of extending into or falling into the barrel body or a heavy object to push and press the lower hot-melt sealed wastepaper packaging and collecting bag downwards through the driving of the driving mechanism or the retracting mechanism, and then the wastepaper packaging and collecting bag is sent into the barrel body;

2) the automatic bag feeding device selects a positive pressure bag blowing device arranged at the bottom of the shredder head or at the upper part of the barrel body,

The positive pressure bag blowing device blows air towards the automatic bag discharging box through at least one air blowing fan arranged above the automatic bag discharging box, and then blows the paper scrap packaging and collecting bag with the lower part sealed by hot melting downwards into the barrel body;

3) the automatic bag feeding device selects a negative pressure bag suction device arranged at the lower part or the bottom of the barrel body,

the negative pressure bag suction device sucks air from the relatively sealed barrel body through at least one air suction fan arranged at the lower part of the barrel body, so that a negative pressure is relatively formed in the inner cavity of the barrel body below the automatic bag outlet box, and then the paper scrap packaging and collecting bag with the hot melt sealed lower part is sucked downwards into the barrel body through the action of atmospheric pressure;

in the automatic bag placing step, an automatic bag feeding signal is transmitted to the automatic bag feeding device through a control key arranged on the shredder head and electrically connected with the control unit or the automatic bag feeding device is electrically connected and used for starting the automatic bag feeding device and electrifying the automatic bag feeding device to work;

in the detection step of the bag body, the electrical parameter detection unit selects any one of the following four detection modes or combines any two of the following four detection modes,

1) In the automatic bag placing process, continuously detecting the electrical parameters of each electric induction sheet or each dielectric sheet group through an electrical parameter detection unit which is always electrically connected to each electric induction sheet or each dielectric sheet group, and transmitting bag body parameter signals to a continuous control unit;

2) in the automatic bag placing process, electrical parameters of each electric induction sheet or each dielectric sheet group are continuously detected for multiple times at set time intervals by an electrical parameter detection unit which is always electrically connected to each electric induction sheet or each dielectric sheet group, and the electrical parameter detection unit respectively transmits a bag parameter signal to the control unit after each detection;

3) during the automatic bag-placing process, a detection signal transmitted to the electrical parameter detection unit is generated at set time intervals by the control unit, the electrical parameter detection unit respectively detects the electrical parameters of each electric induction sheet or each dielectric sheet group after the electrical parameter detection unit receives the detection signal each time,

The electrical parameter detecting unit is enabled to continuously detect for at least three times at intervals in a set time period and obtain a corresponding electrical parameter after each detection,

A plurality of electrical parameters detected in the same time period are averaged by a comparison and conversion unit electrically connected with the control unit to obtain an average value of the electrical parameters,

The comparison and conversion unit is used for converting the calculated average value of the electrical parameters to obtain a bag body parameter signal, and the bag body parameter signal is continuously transmitted to the control unit for multiple times at intervals through the comparison and conversion unit so as to realize detection to obtain an accurate electrical parameter and convert to obtain an accurate bag body parameter signal;

4) the electric parameter detection unit is always electrically connected to each electric induction sheet or each dielectric sheet group, the electric parameters of each electric induction sheet or each dielectric sheet group are detected only through the electric parameter detection unit, in addition, a low-voltage power supply unit electrically connected to the control unit provides low-voltage direct-current voltage for each electric induction sheet or each dielectric sheet group, and the low-voltage power supply unit is only electrically connected to each electric induction sheet or each dielectric sheet group in the automatic bag placing process or is only electrically connected to each electric induction sheet or each dielectric sheet group for set time before each detection;

in the bag body detection step, a bag body parameter signal is sent to a bag falling state indicating device arranged on a shredder head through a control unit, and the working state of an automatic bag feeding device is controlled;

the indication form of the bag falling state indicating device comprises an indication form of sound alarm through a loudspeaker, a display form of indication through digital percentage, a display form of indication through a progress bar, a display form of indication through a column height bar, a display form of sequential lighting indication or gradual lighting indication through each LED lamp in an LED group, and a display form of indication through simulation of symbols or simulation graphs representing the state of a bag body falling into the barrel body; the indication content of the graphic display unit comprises the automatic bag placing progress of the wastepaper packaging and collecting bag, the bag falling height of the wastepaper packaging and collecting bag or the bag opening shape of the wastepaper packaging and collecting bag;

the indication content of the bag falling state indicating device comprises the automatic bag placing progress of the paper scrap packaging and collecting bag, the bag falling height of the paper scrap packaging and collecting bag or the bag opening shape of the paper scrap packaging and collecting bag.

in the bag body detection step, the electric induction sheets are mounted on the barrel body, the electric parameter detection unit is a charge detection unit or a voltage detection unit, and the electric parameter detection unit is used for respectively detecting the charge quantity, the charge variation quantity, the voltage or the voltage variation quantity of each electric induction sheet;

the electric induction chip is selected from a metal plate fixed on the inner bottom surface of the barrel body, an iron sheet with a conductive surface on the surface, a metal block or a printed conductive layer printed on the inner bottom surface of the barrel body;

in the automatic bag placing process, at least a designated position to be reached by the side surface or the bottom surface of the paper scrap packaging and collecting bag is set as a nearest limit position, at least two nearest limit positions are set on the side surface of the barrel body and/or the inner bottom surface of the barrel body, and at least one electric induction sheet is installed at each nearest limit position;

Before each detection, at least, a low-voltage direct-current voltage is respectively provided for the paper scrap packaging and collecting bag and/or each electric induction sheet through the electric parameter detection unit or the low-voltage power supply unit electrically connected to the control unit, and the paper scrap packaging and collecting bag and/or each electric induction sheet are enabled to respectively bear set electric charges;

when the paper scrap packaging and collecting bag is contacted with the electric sensing pieces, the electric sensing pieces change in charge or voltage, whether the paper scrap packaging and collecting bag reaches the corresponding specified nearest limit position is judged by detecting whether the electric sensing pieces change in charge or voltage through the electric parameter detection unit, induction signals of the electric sensing pieces form a bag body parameter signal, and the bag body parameter signal is received through the control unit;

after the electric parameters of the electric induction sheets at the nearest limit positions are changed, the control unit controls the automatic bag feeding device to disconnect the power supply or disconnect the power supply in a delayed mode or generates an electric control signal for controlling the working state of the automatic bag feeding device.

further, when the control circuit is at least powered on and started, in the automatic bag placing process or after the control circuit receives the electric control signal, sending a power-up execution signal to the low-voltage power supply unit through the control unit and executing at least one initialization power-up action, and electrically conducting the paper scrap packaging and collecting bag and/or each electric induction sheet through the electric parameter detection unit or the low-voltage power supply unit in the initialization power-up action to provide a low-voltage direct-current voltage for the paper scrap packaging and collecting bag or each electric induction sheet;

After the voltage or the charge of the paper scrap packaging and collecting bag or each electric induction sheet reaches a set value, the low-voltage power supply unit electrically disconnects the paper scrap packaging and collecting bag and/or each electric induction sheet, the electric parameter detection unit is always electrically connected with the paper scrap packaging and collecting bag and/or each electric induction sheet, and the electric parameter detection unit detects whether the charge/voltage or the charge/voltage of the paper scrap packaging and collecting bag or each electric induction sheet changes;

Setting a designated area in the middle of the inner bottom surface of the barrel body as a minimum limit contact surface, and setting the projection of the automatic bag outlet box on the inner bottom surface of the barrel body as a box body projection surface, wherein the minimum limit contact surface is larger than the box body projection surface;

setting the boundary line of the front and rear sides of the minimum limit contact surface and the boundary line of the left and right sides of the minimum limit contact surface as the nearest limit position,

the electric induction sheet is installed in any one or two of the following six installation modes,

1) at least one electric induction sheet is fixed between the nearest limit positions of the front side and the rear side of the inner bottom surface of the barrel body and the corresponding side surface of the barrel body at intervals;

2) at least one electric induction sheet is fixed between the nearest limit positions of the left side and the right side of the inner bottom surface of the barrel body and the corresponding side surface of the barrel body at intervals;

3) a plurality of electric induction sheets are fixed in the minimum limit contact surface of the inner bottom surface of the barrel body at intervals, and the electric induction sheets are arranged in a matrix or in a circumference;

4) A plurality of electric induction sheets are fixed on the side surface of the barrel body at intervals, and the electric induction sheets are arranged in a matrix or in a circumference;

5) the left side surface and the right side surface of the barrel body are respectively fixed with at least one electric induction sheet at intervals, and the electric induction sheets fixed on the left side surface and the right side surface of the barrel body respectively extend to the inner bottom surface of the barrel body from the corresponding side surfaces of the barrel body;

6) a plurality of electric induction sheets which are arranged at intervals are distributed on the inner bottom surface of the barrel body, and the electric induction sheets are arranged in a matrix or in a circumference;

at least one capacitor is respectively connected in series in each detection loop formed by the electric parameter detection unit and each electric induction sheet in series, a first electrode of the capacitor is electrically connected to the control unit or the low-voltage power supply unit, a second electrode of the capacitor is electrically connected to the corresponding electric induction sheet, and each electric induction sheet is enabled to keep stable charge or voltage before not contacting the paper scrap packaging and collecting bag through the corresponding capacitor.

Furthermore, in the bag body detection step, the dielectric plate groups are installed on the barrel body, in the bag body detection step, the electric parameter detection unit selects a capacitance medium parameter detection unit, two dielectric plates of the same dielectric plate group are used as capacitance medium plates in the circuit structure and are respectively and electrically connected to the capacitance medium parameter detection unit, and capacitance medium coefficients of the dielectric plate groups are respectively detected through the capacitance medium parameter detection unit;

calculating a capacitance medium coefficient by detecting at least one of the maximum charge quantity, the maximum voltage parameter, the maximum current parameter or the shortest charging time which can be respectively accommodated by the corresponding dielectric sheet group;

Each group of dielectric sheet groups comprises two oppositely-oriented dielectric sheets, the two dielectric sheets of the same dielectric sheet group are respectively arranged on the left side and the right side or the upper side and the lower side of the barrel body and oppositely oriented, and each dielectric sheet at least extends for a set length along the height direction and/or the width direction;

The control circuit is provided with a control unit, a capacitance medium parameter detection unit and a comparison and conversion unit, and the control unit is respectively and electrically connected with the capacitance medium parameter detection unit, the comparison and conversion unit and the automatic bag feeding device;

continuously detecting the capacitance medium parameters of each dielectric sheet group through a capacitance medium parameter detection unit or detecting the capacitance medium parameters of each dielectric sheet group at intervals for multiple times according to a set time interval and continuously or repeatedly transmitting a capacitance medium parameter signal to a control unit;

receiving parameter signals of each capacitor medium through a comparison and conversion unit and transmitting bag body parameter signals which are obtained through conversion and reflect the falling state of the paper scrap packaging and collecting bag to a control unit;

The control unit receives bag parameter signals to a bag falling state indicating device arranged at the shredder head and/or simultaneously controls the working state of the automatic bag feeding device after receiving the bag parameter signals, the control unit controls the automatic bag feeding device to keep powered on when the bag parameter signals are smaller than a set bag parameter threshold value, and the control unit controls the automatic bag feeding device to disconnect the power supply or disconnect the power supply in a delayed manner when the bag parameter signals are larger than the bag parameter threshold value.

furthermore, the control circuit is provided with a low-voltage power supply unit electrically connected to the control unit, and a low-voltage direct-current voltage is respectively provided for each dielectric sheet set through the capacitance medium parameter detection unit and/or the low-voltage power supply unit;

generating a detection signal at a plurality of intervals at set time intervals by a control unit at least in the process of electrifying the automatic bag feeding device, receiving the detection signal by a capacitance medium parameter detection unit and respectively detecting the capacitance medium coefficients of each dielectric medium group;

the dielectric sheet is selected from a metal plate, an iron sheet with an insulating paint layer on the surface or a conductive metal printing layer printed on the side surface of the barrel body;

The capacitance medium parameter detection unit adopts any one detection mode or any two detection modes in combination for detection,

1) The capacitance medium parameter detection unit is always electrically connected to each dielectric sheet set, low-voltage direct-current voltage is provided for each dielectric sheet set only through the capacitance medium parameter detection unit, and capacitance medium coefficients of each dielectric sheet set are detected only through the capacitance medium parameter detection unit;

2) only after the capacitance medium parameter detection unit receives the detection signal, the capacitance medium parameter detection unit keeps electrically connected with each corresponding dielectric plate group, and the capacitance medium coefficients of each corresponding dielectric plate group are respectively detected through the capacitance medium parameter detection unit; before the capacitance medium parameter detection unit receives the detection signal or after the capacitance medium parameter detection unit completes detection, the capacitance medium parameter detection unit is respectively in power-off connection with each corresponding dielectric plate group;

3) before the capacitance medium parameter detection unit detects each dielectric plate group each time or only in the detection process, the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric plate group and is disconnected from each corresponding dielectric plate group at the time of delay setting, the low-voltage power supply unit is used for respectively providing a low-voltage direct-current voltage for each dielectric plate group, and after the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric plate group and is delayed for the time of setting, the capacitance medium parameter detection unit is used for respectively detecting the capacitance medium coefficient of each dielectric plate group;

4) respectively connecting a capacitor in series and/or in parallel in a capacitor medium coefficient detection loop formed by connecting a capacitor medium parameter detection unit and each dielectric plate group in series, enabling the corresponding capacitor medium coefficient detection loop to have a capacitor medium coefficient reference and/or form a capacitor medium coefficient comparison reference through the capacitor, taking the capacitor medium coefficient reference or the capacitor medium coefficient comparison reference as a comparison parameter for detecting the capacitor medium coefficient of each dielectric plate group, and detecting the capacitor medium coefficient of each dielectric plate group through the capacitor medium parameter detection unit;

A plurality of groups of dielectric sheet groups are arranged in the barrel body, the mounting mode of the dielectric sheet groups is selected from any one or the combination of any two of the following three mounting structures,

1) and only one group of dielectric sheet groups are arranged in the barrel body, two dielectric sheets of the dielectric sheet groups are respectively fixed on the left side and the right side of the barrel body, the upper end and the lower end of each dielectric sheet along the height direction respectively extend to the upper side and the lower side of the barrel body or the upper side and the lower side adjacent to the barrel body, and the front end and the rear end of each dielectric sheet along the longitudinal direction respectively extend to the front side and the rear side of the barrel body or the front side and the rear side adjacent to the barrel.

2) the barrel body is internally provided with at least two groups of dielectric medium sheet groups, two dielectric medium sheets of the same dielectric medium sheet group are respectively fixed on the left side surface and the right side surface of the barrel body, 1-5 groups of dielectric medium sheet groups are arranged at intervals along the side surface of the barrel body in the height direction, and 1-5 groups of dielectric medium sheet groups are arranged at intervals along the side surface of the barrel body in the longitudinal direction;

3) and at least one group of dielectric sheet groups are arranged in the left side surface and the right side surface of the barrel body, two dielectric sheets of the same dielectric sheet group are respectively fixed on the left side surface and the right side surface of the barrel body, and the lower parts of the dielectric sheets respectively extend to the inner bottom surface of the barrel body from the corresponding side surfaces of the barrel body.

furthermore, the control circuit is provided with a storage unit which is electrically connected with the control unit, a relation conversion table obtained by testing in advance and a bag body parameter threshold value which correspondingly controls the automatic bag feeding device to disconnect the power supply are stored in the storage unit,

the relation conversion table comprises a plurality of groups of bag body parameters corresponding to the bag body positions and/or shapes of the paper scrap packaging and collecting bag and capacitance medium parameters respectively corresponding to the bag body parameters one by one,

the bag body parameter comprises at least one of a bag body parameter value representing the falling height, the falling length, the arrival interval or the bag body shape of the paper scrap packaging and collecting bag, a bag body parameter interval value or a position code,

the capacitance medium parameters comprise capacitance medium values and/or capacitance medium interval values of capacitance medium coefficients of the dielectric sheet groups corresponding to the corresponding bag body parameters,

after the comparison and conversion unit receives the capacitance medium parameters, the comparison and conversion unit compares and converts the capacitance medium parameters according to the relation conversion table to obtain a corresponding bag body parameter, so that a bag body parameter signal containing the bag body parameter is obtained, and the control unit receives the bag body parameter signal.

An automatic paper scrap packaging shredder for realizing the automatic paper scrap packaging method of the shredder according to any one of claims 1 to 8, which comprises a control circuit, a shredder head and a barrel body, wherein the shredder head is arranged on the upper part of the barrel body, the upper part of the shredder head is provided with a paper inlet, the lower part of the shredder head is provided with a scrap discharging port, the inner cavity of the shredder head is provided with a shredder core, the shredder core is provided with a motor, a transmission mechanism and a shredder knife bar, the motor is in transmission connection with the transmission mechanism, the transmission mechanism is in transmission connection with the shredder knife bar, the paper inlet is positioned above the shredder knife bar, and the scrap discharging port is positioned below the shredder knife bar, and the automatic paper scrap packaging shredder is characterized in: the control circuit is provided with a control unit and an electrical parameter detection unit,

an automatic bag outlet box with an inner cavity pre-stored with a paper scrap packaging and collecting bag or capable of storing and reloading the paper scrap packaging and collecting bag is fixedly or movably clamped at the bottom of the shredder head or the upper part of the barrel body, a paper scrap collecting port which is used for collecting paper scraps and vertically penetrates through the automatic bag outlet box is formed in the middle of the automatic bag outlet box, and the paper scrap collecting port is positioned below the scrap discharging port;

The paper shredder head and/or the barrel body are/is provided with an automatic bag feeding device, the control unit is electrically connected with the automatic bag feeding device, the paper shredder is provided with a control key electrically connected with the control unit, and after the control unit receives a key signal of the control key, the control unit transmits a starting signal to the automatic bag feeding device or directly electrically conducts the automatic bag feeding device to output a paper scrap packaging and collecting bag in the automatic bag discharging box to the barrel body;

a bag body sealing and fusing device is arranged below the automatic bag outlet box and is electrically connected with the control unit;

The electric sensing sheet or the dielectric sheet set which is electrically connected with the electric parameter detection unit is arranged on the side surface and/or the inner bottom surface of the barrel body, the electric parameter detection unit continuously detects or repeatedly detects the electric sensing sheet or the dielectric sheet set at intervals in the automatic bag placing process to respectively obtain an electric parameter, and the electric parameter detection unit continuously or repeatedly transmits a bag body parameter signal at least comprising a bag falling state representing the paper scrap packaging and collecting bag and/or a bag body shape to the control unit at intervals in the automatic bag placing process according to the received electric parameter;

The control unit generates a power-off control signal acting on the automatic bag feeding device or automatically controls the working state of the automatic bag feeding device according to the received bag parameter signal, and is used for controlling the automatic bag feeding device to stop working immediately or stop working in a delayed manner.

furthermore, the automatic bag discharging box comprises a frame with a hollow middle part to form the paper scrap collecting opening, the frame is in a circular ring body shape or a shape like a Chinese character 'hui', the width of the paper scrap collecting opening is not smaller than the width of the chip removal opening, and the length of the paper scrap collecting opening is not smaller than the length of the chip removal opening;

the inner cavity of the frame is arranged into a storage bag inner cavity in a ring body shape or a 'return' shape, the wastepaper packaging and collecting bag is a through bag with continuous bag bodies and only an opening end part, the wastepaper packaging and collecting bag which is continuous along the length direction, is in a cylinder shape after being unfolded and is used for continuous output is stored in the storage bag inner cavity, and the bag body of the wastepaper packaging and collecting bag is folded in a Z shape and is stored in the storage bag inner cavity;

an outlet opening which surrounds the frame for a circle and is used for outputting the scraps packaging and collecting bag outwards is arranged on the inner side, the bottom surface or the outer side of the frame, and an upper opening of the scraps packaging and collecting bag extending to the automatic bag outlet box forms a paper falling opening which is larger than the scrap discharging opening;

the bottom of the shredder head or the upper part of the barrel body is provided with an installation position, the frame is clamped in the installation position, and the top surface, the side surface or the bottom surface of the frame is in sealing fit or positioning fit with the corresponding joint surface of the installation position;

The automatic bag feeding device adopts any one or the combination of any two of the following three structures,

1) the automatic bag feeding device selects a mechanical bag pressing mechanism arranged inside or at the bottom of the shredder head, the mechanical bag pressing mechanism comprises a bag feeding driving mechanism and a bag pushing mechanism, the bag feeding driving mechanism is in transmission connection with the bag pushing mechanism, and the bag pushing mechanism selects a bag pushing rod, a bag pushing plate and a bag pushing connecting rod which can extend into the barrel body or a weight which can fall into the barrel body through self weight to realize that a paper scrap packaging and collecting bag with the lower part sealed by hot melting is fed into the barrel body;

2) the automatic bag feeding device selects a positive pressure bag blowing device arranged at the bottom of the shredder head or at the upper part of the barrel body, the positive pressure bag blowing device is arranged above the automatic bag discharging box,

the positive pressure bag blowing device comprises a blowing fan electrically connected with the control unit, the blowing fan is fixedly arranged above the automatic bag outlet box, the blowing fan is provided with an air inlet surface and an air outlet surface, and the air outlet surface of the blowing fan faces to or is communicated with the paper scrap collecting port;

The negative pressure bag pulling device comprises an air exhaust fan electrically connected to the control unit and an air exhaust opening formed in a bottom plate or a side plate of the barrel body, the air exhaust fan is fixedly arranged at the air exhaust opening and is provided with an air inlet surface and an air outlet surface, the air inlet surface of the air exhaust fan faces or is communicated with the barrel body, and the air inlet surface of the air exhaust fan is in sealing fit with the edge of the air exhaust opening;

the electrical parameter detecting unit selects any one of the following four detecting modes or any two of the following four detecting modes in combination,

1) the electrical parameter detection unit is always electrically connected to each electric induction sheet or each dielectric sheet group, continuously detects the electrical parameters of each electric induction sheet or each dielectric sheet group, and transmits the bag body parameter signals to the continuous control unit;

2) the electrical parameter detection unit is always electrically connected with each electric induction sheet or each dielectric sheet group, the electrical parameter detection unit continuously detects the electrical parameters of each electric induction sheet or each dielectric sheet group for multiple times at set time intervals, and the electrical parameter detection unit respectively transmits a bag body parameter signal to the control unit after each detection;

3) the control unit generates a detection signal transmitted to the electrical parameter detection unit at set time intervals, after the electrical parameter detection unit receives the corresponding detection signal every time, the electrical parameter detection unit continuously detects for at least three times at intervals in a set time period and obtains a corresponding electrical parameter after each detection, the control circuit is provided with a comparison and conversion unit which is electrically connected with the control unit, the comparison and conversion unit is used for carrying out average calculation on a plurality of electrical parameters detected in the same time period to obtain an electrical parameter average value, the comparison and conversion unit is used for carrying out conversion on the electrical parameter average value obtained by calculation to obtain a bag body parameter signal, the comparison and conversion unit is used for continuously transmitting the bag body parameter signal to the control unit for a plurality of times at intervals, so as to realize detection to obtain an accurate electrical parameter and convert to obtain an accurate bag parameter signal;

4) The electric parameter detection unit is electrically connected with each electric induction sheet or each dielectric medium group all the time, the electric parameter detection unit only detects the electric parameters of each electric induction sheet or each dielectric medium group, the control circuit is provided with a low-voltage power supply unit electrically connected with the control unit, and the paper scrap packaging and collecting bag and/or the electric induction sheet are electrically connected with the electric parameter detection unit, or the paper scrap packaging and collecting bag and/or the electric induction sheet are electrically connected with the electric parameter detection unit and the low-voltage power supply unit respectively;

the control unit generates a detection signal transmitted to the electrical parameter detection unit at set time intervals; the low-voltage power supply unit is always electrically connected to each electric induction sheet or each dielectric sheet group respectively, or is only electrically connected to each electric induction sheet or each dielectric sheet group after the low-voltage power supply unit receives the low-voltage power supply unit each time and is disconnected in electrical connection in a delayed manner, so that a low-voltage direct-current voltage is provided for each electric induction sheet or each dielectric sheet group;

Each group of dielectric medium sheet groups comprises two dielectric medium sheets facing oppositely, and the two dielectric medium sheets of the same dielectric medium sheet group are used as capacitance dielectric sheets in the circuit structure and are respectively and electrically connected with the capacitance dielectric parameter detection unit;

the paper shredder is provided with a bag falling state indicating device electrically connected with the control unit, and the control unit sends a bag parameter signal to the bag falling state indicating device and controls the working state of the automatic bag feeding device;

the bag falling state indicating device selects a loudspeaker sound alarm, an indicating lamp, an LED indicating lamp group with multi-level indication, an indicating symbol with a graphic display area or a graphic display unit, and indicates or simulates the bag falling state or the bag body shape of the wastepaper packaging and collecting bag conveyed into the barrel body;

The indication content of the bag falling state indicating device comprises the automatic bag placing progress of the paper scrap packaging and collecting bag, the bag falling height of the paper scrap packaging and collecting bag or the bag opening shape of the paper scrap packaging and collecting bag;

the side surface or the bottom surface of the paper scrap packaging and collecting bag at least reaches a designated position set as a nearest limit position in the automatic bag placing process, at least one nearest limit position is set on the side surface of the barrel body and/or the inner bottom surface of the barrel body, and at least one electric induction sheet or dielectric sheet group is installed at each nearest limit position;

the designated area of the middle part of the inner bottom surface of the barrel body is set as a minimum limit contact surface, the projection of the automatic bag outlet box on the inner bottom surface of the barrel body is set as a box body projection surface, the minimum limit contact surface is larger than the box body projection surface, and the boundary line of the front side and the rear side of the minimum limit contact surface and the boundary line of the left side and the right side of the minimum limit contact surface are respectively set as a nearest limit position;

The electrical parameter detection unit sends an electrical control signal to the control unit when either of the following two conditions occurs,

1) when the paper scrap packaging and collecting bag contacts with the corresponding electric induction sheet at the nearest limit position, charge transfer or voltage change is generated between the paper scrap packaging and collecting bag and the electric induction sheet, the electric parameter detection unit sends an electric control signal to the control unit, and the stop control signal or the power-off control signal is transmitted to the automatic bag feeding device after the control unit receives the electric control signal;

2) when the paper scrap packing and collecting bag enters a space between two dielectric sheets of the same dielectric sheet group, the capacitance medium coefficient of the corresponding dielectric sheet group changes, when the capacitance medium coefficient of the corresponding dielectric sheet group reaches a set parameter value or falls into a set parameter interval, or when the capacitance medium coefficient of the dielectric sheet group at a specified position or at the nearest limit position changes, the electrical parameter detection unit sends an electrical control signal to the control unit, and the control unit transmits a stop control signal or a power-off control signal to the automatic bag feeding device after receiving the electrical control signal.

furthermore, at least one electric sensing piece is installed in the barrel body, each electric sensing piece electrically connected to the electric parameter detection unit forms a detection loop respectively, the installation structure of the electric sensing piece selects any one of the following six installation structures or uses any two of the six installation structures in combination,

1) at least one electric induction sheet is fixed between the nearest limit positions on the front side and the rear side of the inner bottom surface of the barrel body and the corresponding side surface of the barrel body at intervals;

At least one group of dielectric slice groups are arranged in the barrel body, each dielectric slice group electrically connected with the electrical parameter detection unit respectively forms a detection loop, the mounting mode of the dielectric slice groups selects any one or combination of any two of the following three mounting structures,

3) the left side surface and the right side surface of the barrel body are provided with at least one group of dielectric sheet groups, two dielectric sheets of the same dielectric sheet group are respectively fixed on the left side surface and the right side surface of the barrel body, and the lower parts of the dielectric sheets respectively extend to the inner bottom surface of the barrel body from the corresponding side surfaces of the barrel body;

at least one capacitor is connected in series to each detection loop, a first electrode of each capacitor is electrically connected to the control unit or the low-voltage power supply unit, and a second electrode of each capacitor is electrically connected to the corresponding electric induction sheet or the corresponding dielectric sheet group.

compared with the prior art, the invention has the advantages that: according to the automatic paper scrap discharging and collecting device, the automatic bag discharging box storing the paper scrap packaging and collecting bag is arranged at the upper end of the barrel body, the paper scrap packaging and collecting bag is automatically conveyed through the automatic bag conveying device, the paper scrap packaging and collecting bag is sealed and fused through the bag body sealing and fusing device, whether the paper scrap packaging and collecting bag is smashed and conveyed in place or not is automatically detected, full-automatic bag conveying is achieved, the automation degree is high, and the use is convenient.

the invention automatically drops all shredded paper dropped from the scrap discharge port into the paper scrap packaging and collecting bag, prevents the shredded paper from flying around, automatically seals and packages, prevents the shredded paper from polluting the paper shredder and various electronic components including a detector, an inductor or an inductive switch, keeps the barrel clean, and is energy-saving and environment-friendly.

drawings

the invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the shredder of the present invention.

fig. 2 is a schematic structural diagram of the present invention, in which two oppositely facing dielectric sheets are fixed on the left and right sides of the barrel body to form a dielectric sheet group.

fig. 3 is a schematic structural diagram of three oppositely facing dielectric sheets respectively fixed side by side on the left and right sides of the barrel body to form three dielectric sheet groups respectively.

FIG. 4 is a schematic view of a configuration in which the dielectric sheet extends from the side of the barrel to the inner bottom surface of the barrel.

FIG. 5 is a schematic structural view of the pneumatic bag-laying device installed at the bottom of the barrel body.

fig. 6 is a schematic structural view of the automatic bag outlet box of the present invention.

FIG. 7 is a schematic view of a graphic display unit mounted on the top surface of the shredder head for showing the falling state of the paper scrap packing and collecting bag in a simulated manner.

FIG. 8 is a schematic structural diagram of the bag falling state indicating device showing the connection state of the bottom of the wastepaper packaging and collecting bag and the inner bottom surface of the barrel body.

Fig. 9 is a schematic structural view of an electric sensing piece mounted on each of the left and right sides of the inner bottom surface of the tub bottom.

fig. 10 is a schematic structural view of an electric sensing piece mounted on each of the front and rear sides of the inner bottom surface of the tub bottom.

fig. 11 is a schematic structural view of an electric sensing piece mounted on each of left and right sides and left and right sides of an inner bottom surface of a tub bottom.

fig. 12 is a schematic structural view of a plurality of electric induction pieces mounted on the inner bottom surface of the tub bottom at intervals in the vertical and horizontal directions.

FIG. 13 is a schematic structural diagram of a plurality of electric sensing pieces arranged in a matrix at intervals on the inner bottom surface of the barrel bottom.

the labels in the figure are:

1. The paper shredder comprises a shredder head 11, a scrap discharge port 12, a paper inlet 13, a scrap paper packaging and collecting bag 14, an air suction port 15 and a bag falling state indicating device.

2. barrel 20, door panel 21, observation window.

3. an automatic bag outlet box 31, a wastepaper collection opening 32, a bag outlet opening 33, a bag storage cavity 34 and a cover body.

5. Automatic bag feeding device.

6. a dielectric sheet.

7. an electrically inductive sheet.

8. a correlation type photoelectric sensor.

Detailed Description

the following are merely preferred embodiments of the present invention, and do not limit the scope of the present invention.

The automatic paper scrap packing method of the paper shredder, shown in figures 1 to 13, comprises the following steps,

installing the automatic bag outlet box 3, clamping the automatic bag outlet box 3 stored with the paper scrap packing and collecting bag 13 at the upper part of the barrel body 2 or the bottom of the shredder head 1, pulling out the paper scrap packing and collecting bag 13 in the automatic bag outlet box 3 outwards through a bag outlet 32 arranged around the automatic bag outlet box 3 and downwards passing through a paper scrap collecting port 31 arranged at the middle part of the automatic bag outlet box 3, and forming a paper falling opening below the scrap discharging port 11 of the shredder at the upper part of the paper scrap packing and collecting bag 13 output from the paper scrap packing and collecting bag 13 in the automatic bag outlet box 3.

specifically, the automatic bag discharging box 3 comprises a frame with a hollow middle part for forming the paper scrap collecting opening 31, wherein the frame is in a circular ring body shape or a shape like a Chinese character 'hui', so that the width of the paper scrap collecting opening 31 is not less than the width of the scrap discharging opening 11, and the length of the paper scrap collecting opening 31 is not less than the length of the scrap discharging opening 11; the paper scrap packaging and collecting bag 13 is a through bag with a continuous bag body and an opening only at the end part; the inner cavity of the frame is set into a storage bag inner cavity 33 which is in a ring body shape or a shape like the Chinese character 'hui', the bag body of the wastepaper packaging and collecting bag 13 is folded and stored in the storage bag inner cavity 33 in a Z shape, and then the wastepaper packaging and collecting bag 13 which is continuous along the length direction, is in a cylinder shape after being unfolded and is used for continuous output is stored in the storage bag inner cavity 33; the paper scrap packaging and collecting bag 13 is outwards output through a bag outlet 32 which is arranged on the inner side of the frame and surrounds the frame for one circle, and the bag outlet 32 is designed on the inner side, the bottom or the outer side of the frame, so that a formed paper falling opening is larger than the scrap discharging opening 11; arranging an installation position at the bottom of the shredder head 1 or the upper part of the barrel body 2, clamping the frame in the installation position at the upper part of the barrel body 2, and enabling the top surface, the side surface or the bottom surface of the frame to be in sealing fit or positioning fit with the corresponding connection surface of the installation position; by automatically and continuously outputting the paper scrap packaging and collecting bags 13 through the automatic bag outlet box 3, a user does not need to manually sleeve or put the paper scrap into the bags each time.

preferably, the automatic bag discharging box 3 is in sealing fit with the upper part of the barrel body 2, the automatic bag discharging box 3 is a box body which can be detached and reloaded with the paper scrap packaging and collecting bag 13, or the automatic bag discharging box 3 is a disposable component which is pre-stored with the paper scrap packaging and collecting bag 13, and after the paper scrap packaging and collecting bag 13 in the automatic bag discharging box 3 is used up, a new automatic bag discharging box 3 is replaced.

and a hot melting sealing fusing step of sealing the bag body of the paper scrap packaging and collecting bag 13 extending to the lower part of the automatic bag outlet box 3 by hot melting through a bag body sealing fusing device arranged below the automatic bag outlet box 3, so that the paper scrap packaging and collecting bag 13 forms a first hot melting sealing part and seals the lower part of the first hot melting sealing part. Preferably, be provided with the sealed fusing device of bag body in the below of the automatic bag box 3 that goes out, the sealed fusing device of bag body includes the pedestal, draw in mechanism and hot melt mechanism in, draw in the mechanism and install in the pedestal, draw in the mechanism and be used for drawing in or compressing tightly wastepaper packing collection bag 13, hot melt mechanism installs in the pedestal, hot melt mechanism is used for forming a hot melt sealing with the bag body hot melt sealing of wastepaper packing collection bag 13, can install fusing mechanism or install shutdown mechanism in the pedestal at hot melt mechanism, cut off the middle part of hot melt sealing through fusing mechanism or shutdown mechanism, the upper portion that makes the wastepaper packing collection bag 13 that the collection that has wastepaper that cuts off out has the hot melt sealing, the lower part that remains wastepaper packing collection bag 13 in the below of the automatic bag box 3 that goes out that cuts off simultaneously has the hot melt sealing.

an automatic bag placing step, namely, conveying an automatic bag feeding signal to the automatic bag feeding device 5 through a control key of an electric connection control unit arranged on the shredder head 1 or electrically connecting the automatic bag feeding device 5, and starting the automatic bag feeding device 5 to enable the automatic bag feeding device 5 to be electrified for work; the paper scrap packing and collecting bag 13 is conveyed downwards into the barrel body 2 through an automatic bag feeding device 5 arranged at the paper shredder head 1 or at the lower part of the barrel body 2.

In a specific embodiment, any one or two of the following three mounting mechanisms can be selected for the automatic bag feeding device 5 to realize full-automatic bag feeding.

1) The automatic bag feeding device 5 selects a mechanical bag pressing mechanism arranged inside or at the bottom of the shredder head 1, the mechanical bag pressing mechanism is driven by a driving mechanism or a retraction mechanism to control at least one bag pushing mechanism or weight which can stretch into or fall into the barrel body 2 to push and press the lower hot-melt sealed wastepaper packaging and collecting bag 13 downwards, and then the wastepaper packaging and collecting bag 13 is fed into the barrel body 2.

2) the automatic bag feeding device 5 selects a positive pressure bag blowing device which is arranged at the bottom of the shredder head 1 or at the upper part of the barrel body 2, the positive pressure bag blowing device blows air towards the automatic bag discharging box 3 through at least one air blowing fan which is arranged above the automatic bag discharging box 3, and then the lower hot-melt sealed paper scrap packaging and collecting bag 13 is blown downwards and fed into the barrel body 2;

Wherein, for the paper scrap packing and collecting bag 13 which is blown downwards by the blowing fan, the sealing design is not needed on the barrel body 2, therefore, the barrel body 2 can be designed into a bracket structure and the like, for example, various brackets, frames, platforms and the like are used to replace the barrel body 2.

3) The automatic bag feeding device 5 selects the negative pressure bag sucking device installed on the lower portion or the bottom of the barrel body 2, the negative pressure bag sucking device sucks air from the barrel body 2 sealed relatively through at least one air exhaust fan installed on the lower portion of the barrel body 2, so that the negative pressure is formed relatively in the inner cavity of the barrel body 2 below the automatic bag discharging box 3, and then the paper scrap packaging and collecting bag 13 sealed by hot melting on the lower portion is sucked into the barrel body 2 downwards through the action of atmospheric pressure.

and a bag body detection step, wherein at least one electric induction sheet 7 electrically connected with the electric parameter detection unit is arranged on the side surface or the inner bottom surface of the barrel body 2, or at least one dielectric sheet group electrically connected with the electric parameter detection unit is arranged on the side surface or the inner bottom surface of the barrel body 2, or the electric induction sheet 7 and the dielectric sheet group are arranged on the side surface or the inner bottom surface of the barrel body 2. The electric parameter detection unit detects the electric parameters of the electric induction sheet 7 or the dielectric sheet set through the detection electric parameter detection unit, the electric parameter detection unit continuously detects the electric parameters of the electric induction sheet 7 or the dielectric sheet set at intervals for multiple times in the process of executing the automatic bag placing step, and the electric parameter detection unit continuously or intermittently transmits a bag body parameter signal at least including a bag falling state representing the paper scrap packaging and collecting bag 13 and a bag body shape to the control unit in the control circuit for multiple times in the process of executing the automatic bag placing step.

in the specific embodiment, the electrical parameter detecting unit selects any one of the following four detecting methods or uses any two of them in combination,

1) in the automatic bag placing process, continuously detecting the electrical parameters of each electric induction sheet 7 or each dielectric sheet group through an electrical parameter detection unit which is always electrically connected to each electric induction sheet 7 or each dielectric sheet group, and transmitting bag body parameter signals to a continuous control unit;

2) in the automatic bag placing process, the electrical parameter detection unit which is always electrically connected with each electric induction sheet 7 or each dielectric sheet group is used for continuously detecting the electrical parameters of each electric induction sheet 7 or each dielectric sheet group for multiple times at set time intervals, and the electrical parameter detection unit respectively transmits a bag parameter signal to the control unit after each detection;

3) during the automatic bag-placing process, the control unit generates a detection signal at set time intervals continuously, the detection signal is transmitted to the electrical parameter detection unit, the electrical parameter detection unit detects the electrical parameters of each electric induction sheet 7 or each dielectric sheet group after the electrical parameter detection unit receives the detection signal each time,

4) the electric parameter detection unit is always electrically connected to each electric induction sheet 7 or each dielectric sheet group, the electric parameters of each electric induction sheet 7 or each dielectric sheet group are detected only through the electric parameter detection unit, in addition, a low-voltage power supply unit electrically connected to the control unit is used for providing 3-12V low-voltage direct-current voltage for each electric induction sheet 7 or each dielectric sheet group, and the low-voltage power supply unit is electrically connected to each electric induction sheet 7 or each dielectric sheet group only in the automatic bag discharge process or is electrically connected to each electric induction sheet 7 or each dielectric sheet group for set time only before each detection.

The designated position of the barrel body 2, at least the side surface or the bottom surface of the paper scrap packaging and collecting bag 13 of which the side surface or the bottom surface is to reach, is set as a nearest limit position, the position which the paper scrap packaging and collecting bag 13 must reach when the paper scrap packaging and collecting bag 13 is conveyed to the barrel body 2 is determined through the designated nearest limit position, whether the spreading state of the paper scrap packaging and collecting bag 13 conveyed into the barrel body 2 is in place or not and whether the bottom of the paper scrap packaging and collecting bag 13 is in place or not are also determined, the position of the paper scrap packaging and collecting bag 13 is detected in the process of conveying the paper scrap packaging and collecting bag 13, and the conveying of the paper scrap packaging and collecting bag 13 is stopped at least after the paper scrap packaging and collecting bag.

in a preferred embodiment, a bag body parameter signal is sent to a bag falling state indicating device 15 arranged on the shredder head 1 through a control unit, and the working state of the automatic bag feeding device 5 is controlled; the bag body parameter signals at least comprise position signals of the bottom arrival of the paper scrap packaging and collecting bag 13 and position information of the bag edge extension arrival of the paper scrap packaging and collecting bag 13; the bag falling state or the bag shape of the wastepaper packaging and collecting bag 13 conveyed into the barrel body 2 is indicated or simulated and displayed by the bag falling state indicating device 15;

The indication form of the bag falling state indicating device 15 includes an indication form of sound alarm through a speaker, a display form of indication through a digital percentage, a display form of indication through a progress bar, a display form of indication through a column height bar, a display form of indication by sequential lighting or stepwise lighting of each LED lamp in the LED group, a display form of indication by a symbol or a simulated graphic indicating a state of a bag body falling into the tub 2 through simulation; the indication content of the graphic display unit comprises the automatic bag placing progress of the paper scrap packaging and collecting bag 13, the bag falling height of the paper scrap packaging and collecting bag 13 or the bag body opening form of the paper scrap packaging and collecting bag 13; the indication content of the bag falling state indicating device 15 includes the automatic bag placing progress of the wastepaper packaging and collecting bag 13, the bag falling height of the wastepaper packaging and collecting bag 13 or the bag body opening form of the wastepaper packaging and collecting bag 13, and more vividly and more directly indicates or displays the conveying condition of the wastepaper packaging and collecting bag 13.

Stopping the bag placing step, receiving the bag body parameter signal by the control unit in the process of executing the automatic bag placing step and automatically controlling the working state of the automatic bag feeding device 5,

when the bag body parameter signal received by the control unit is smaller than the set bag body parameter threshold value, the control unit controls the automatic bag feeding device 5 to keep the power-on work and continuously feed the paper scrap packaging and collecting bag 13 downwards into the barrel body 2,

When the bag parameter signal received by the control unit is larger than the bag parameter threshold value, the control unit generates an electric control signal or controls the automatic bag feeding device 5 to disconnect the power supply, and of course, the control unit can also control the automatic bag feeding device 5 to disconnect the power supply in a delayed way; the condition that the downward position or the opening degree of the paper scrap packing and collecting bag 13 is not in place is avoided.

A paper shredding step, wherein paper is fed through a paper inlet 12 on the upper part of the paper shredder head 1, the paper is shredded through a paper shredding knife bar arranged inside the paper shredder head 1, paper scraps formed after being shredded by the paper shredding knife bar fall downwards into a paper scrap collecting opening 31 of the automatic bag outlet box 3 through a scrap discharging opening 11 arranged below the paper shredding knife bar, all the paper scraps fall downwards into a paper scrap packaging and collecting bag 13 through a paper falling opening, and the paper scraps are collected through the paper scrap packaging and collecting bag 13 with a sealed lower part and an open upper part;

and a bag sealing and cutting step, namely, a bag body sealing and fusing device is used for carrying out hot melting and sealing on an upper bag body of the paper scrap packaging and collecting bag 13 extending to the lower part of the automatic bag outlet box 3 to form a second hot melting sealing part, and a cutting mechanism or a fusing mechanism is used for cutting off the second hot melting sealing part or the bag body above the second hot melting sealing part. The steps are circulated after the automatic bag discharging box 3 is installed and during normal use, the hot-melt sealing and fusing step is manually executed or automatically executed after the wastepaper packaging and collecting bag 13 is filled with wastepaper, the upper bag body of the wastepaper packaging and collecting bag 13 is hot-melt sealed and cut off, the wastepaper packaging and collecting bag 13 filled with the wastepaper is taken out from the barrel body 2, the automatic bag placing step is manually executed or automatically executed in sequence, the bag body detecting step and the bag placing stopping step are automatically fed into the barrel body 2, the wastepaper is automatically collected in the paper shredding process, the hot-melt sealing and fusing step is manually executed or automatically executed again after the wastepaper packaging and collecting bag 13 is filled with the wastepaper again, and the circulation is carried out.

in a preferred embodiment, a plurality of groups of opposite-type photoelectric sensors 8 arranged at different height positions on the side surface of the barrel body 2 are used for assisting in detecting and judging the bag body position and/or the bag body shape of the wastepaper packaging and collecting bag 13; the bag body position and the bag body shape of the wastepaper packaging and collecting bag 13 are detected and judged in an auxiliary way by a plurality of groups of opposite type photoelectric sensors 8 arranged at different positions of the inner bottom surface of the barrel body 2, and the two modes can be implemented independently or in a combined way.

The control unit receives photoelectric sensing signals of each reflection type photoelectric sensor 8, and after the control unit receives the photoelectric sensing signals, the control unit sends a bag parameter signal to a bag falling state indicating device 15 arranged on the paper shredder and simultaneously controls the working state of the automatic bag feeding device 5; the bag body parameter signals at least comprise position signals of the bottom arrival of the paper scrap packaging and collecting bag 13 and position information of the bag edge extension arrival of the paper scrap packaging and collecting bag 13; the bag falling state or the bag shape of the wastepaper packaging and collecting bag 13 conveyed into the barrel body 2 is indicated or simulated and displayed by the bag falling state indicating device 15;

the combined opposite type photoelectric sensors 8 are used for combined detection, and the bag falling state or the bag body shape of the paper scrap packaging and collecting bag 13 is detected in a photoelectric sensing detection mode, any one of the following three photoelectric sensing detection modes is selected, any two of the three photoelectric sensing detection modes are used together or any three of the three photoelectric sensing detection modes are used together,

1) Sensing the position reached by the bottom of the paper scrap packaging and collecting bag 13 through the opposite type photoelectric sensors 8 arranged at different height positions on the side surface of the barrel body 2, respectively arranging at least one group of opposite type photoelectric sensors 8 at a plurality of different height positions on the side surface of the barrel body 2, and respectively arranging the photoelectric signal transmitting part and the photoelectric signal receiving part of each group of opposite type photoelectric sensors 8 in corresponding directional shielding chambers on the side surface of the barrel body 2;

2) Sensing the position of the paper scrap packaging and collecting bag 13, which is extended by the bag edge, by a plurality of groups of opposite-type photoelectric sensors 8 which are arranged at the same height position on the side surface of the barrel body 2 and are spaced from each other in the front-back direction, arranging a plurality of groups of opposite-type photoelectric sensors 8 at the same height position on the side surface of the barrel body 2 in the front-back direction at intervals, and respectively arranging photoelectric signal transmitting parts and photoelectric signal receiving parts of the groups of opposite-type photoelectric sensors 8 in corresponding directional shielding chambers on the side surface of the barrel body 2;

3) sensing the position where the bag edge of the paper scrap packaging and collecting bag 13 extends through a plurality of groups of opposite-emitting photoelectric sensors 8 which are arranged at the same height position on the inner bottom surface of the barrel body 2 and are spaced from the front to the back, arranging a plurality of groups of opposite-emitting photoelectric sensors 8 at intervals on the inner bottom surface of the barrel body 2, and respectively arranging photoelectric signal transmitting parts and photoelectric signal receiving parts of the opposite-emitting photoelectric sensors 8 in corresponding directional shielding chambers on the inner bottom surface of the barrel body 2;

wherein, the directional shielding chamber positioned on the side surface of the barrel body 2 adopts a horizontally arranged column hole or a horizontally arranged flat groove; the directional shielding chamber positioned on the inner bottom surface of the barrel body 2 is a vertically arranged column hole or a vertically arranged flat groove; the partition board or the wall body in each directional shielding chamber extends outwards and exceeds the photoelectric signal transmitting part and the photoelectric signal receiving part of the corresponding opposite emission type photoelectric sensor 8 installed in the directional shielding chamber, or the photoelectric signal transmitting part and the photoelectric signal receiving part of each opposite emission type photoelectric sensor 8 are respectively retracted in the directional shielding chamber; the photoelectric signal emission direction and the photoelectric signal coverage shape of the photoelectric signal emission part of each pair of the emission type photoelectric sensors 8 are respectively shielded or limited by a partition or a wall body arranged in the directional shielding chamber, and the photoelectric signal coverage area of each pair of the emission type photoelectric sensors 8 is in a cylindrical shape or a sheet shape; the signal receiving direction of the photoelectric signal receiving part of each pair of opposite emission type photoelectric sensors 8 is respectively shielded or limited by a partition or a wall body arranged in the directional shielding chamber, so that the photoelectric signal coverage areas of each pair of opposite emission type photoelectric sensors 8 are in a beam shape or a sheet shape which does not cross or overlap with each other, and the mutual interference of the photoelectric signals of different groups of opposite emission type photoelectric sensors 8 is avoided.

on the basis of installing the opposite-type photoelectric sensor 8 in the barrel body 2, an electric induction sheet 7 can be installed in the barrel body 2, of course, the electric induction sheet 7 can also be installed only in the barrel body 2, the electric induction sheet 7 is fixedly installed on the inner side surface or the inner bottom surface of the barrel body 2, and the electric induction sheet 7 is selected from a metal plate fixed on the inner bottom surface of the barrel body 2, an iron sheet with a conductive surface on the surface, a metal block or a printed conductive layer printed on the inner bottom surface of the barrel body 2, so that the electric induction sheet 7 generates electrostatic induction or charge transfer when contacting the paper scrap packaging and collecting bag 13.

in a specific embodiment, in the bag body detection step, the electric sensing pieces 7 are mounted on the barrel body 2, the electric parameter detection unit is a charge detection unit or a voltage detection unit, and the electric parameter detection unit is used for respectively detecting the charge quantity, the charge variation, the voltage or the voltage variation of each electric sensing piece 7;

The designated position at least to be reached by the side surface or the bottom surface of the paper scrap packaging and collecting bag 13 in the automatic bag placing process is set as a nearest limit position, at least two nearest limit positions are set on the side surface of the barrel body 2 or the inner bottom surface of the barrel body 2, and at least one electric induction sheet 7 is installed at each nearest limit position;

before each detection, at least, a low-voltage direct-current voltage is respectively provided for the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 through the electric parameter detection unit or the low-voltage power supply unit electrically connected to the control unit, and the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 is enabled to respectively bear set electric charges;

When the paper scrap packaging and collecting bag 13 contacts the electric sensing piece 7, the electric charge or voltage of the electric sensing piece 7 changes, whether the paper scrap packaging and collecting bag 13 reaches the corresponding appointed nearest limit position is judged by detecting whether the electric charge or the voltage of the electric sensing piece 7 changes or not through the electric parameter detection unit, the sensing signals of the electric sensing pieces 7 form a bag parameter signal, and the bag parameter signal is received through the control unit; after the electrical parameters of the electric sensing sheets 7 at the nearest limit positions are changed, the control unit controls the automatic bag feeding device 5 to disconnect the power supply or disconnect the power supply in a delayed mode or generates an electric control signal for controlling the working state of the automatic bag feeding device 5.

in a preferred embodiment, at least when the control circuit is powered on and started, in the automatic bag placing process or after the control circuit receives an electric control signal, the control unit sends a power-up execution signal to the low-voltage power supply unit and executes at least one initialization power-up action, and the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 is electrically conducted through the electric parameter detection unit or the low-voltage power supply unit in the initialization power-up action, so that a low-voltage direct-current voltage is provided for the paper scrap packaging and collecting bag 13 or each electric induction sheet 7; after the voltage or the electric charge of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 reaches a set value, the low-voltage power supply unit electrically disconnects the paper scrap packaging and collecting bag 13 or each electric induction sheet 7, the electric parameter detection unit is always electrically connected with the paper scrap packaging and collecting bag 13 or each electric induction sheet 7, the electric parameter detection unit detects the electric charge or the voltage of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7, or the electric parameter detection unit detects whether the electric charge or the voltage of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 changes or not, so that the position of the paper scrap packaging and collecting bag 13 and the bag body shape of the paper scrap packaging and collecting bag 13 sent into the barrel body 2 are accurately sensed and judged.

Setting a designated area in the middle of the inner bottom surface of the barrel body 2 as a minimum limit contact surface, setting the projection of the automatic bag outlet box 3 on the inner bottom surface of the barrel body 2 as a box body projection surface, wherein the minimum limit contact surface is larger than the box body projection surface; the boundary lines of the front side and the rear side of the minimum limit contact surface and the boundary lines of the left side and the right side of the minimum limit contact surface are respectively set as a nearest limit position, and through the setting of the nearest limit position, the automatic detection and the automatic bag feeding are guaranteed, and whether the paper scrap packaging and collecting bag 13 descends in place and is unfolded in place is guaranteed.

in a preferred embodiment, the electric induction sheet 7 is mounted by any one of the following six mounting methods or any two of the following six mounting methods in combination,

1) at least one electric sensing piece 7 is fixed between the nearest limit positions of the front and rear sides of the inner bottom surface of the barrel body 2 and the corresponding side surface of the barrel body 2 at intervals, for example, a transversely extending electric sensing piece 7 is fixed on the front and rear sides of the inner bottom surface of the barrel body 2 only at the corresponding nearest limit position respectively, and as shown in fig. 10, the distance between the electric sensing pieces 7 on the front and rear sides, namely the limited width of the paper scrap packing and collecting bag 13 at least extending on the bottom surface of the barrel body 2.

2) at least one electric induction sheet 7 is fixed between the nearest limit positions of the left side and the right side of the inner bottom surface of the barrel body 2 and the corresponding side surface of the barrel body 2 at intervals;

3) A plurality of electric induction sheets 7 are fixed in the minimum limit contact surface of the inner bottom surface of the barrel body 2 at intervals, and the electric induction sheets 7 are arranged in a matrix or in a circumference;

for example, an electric sensing piece 7 is fixed to both the left and right sides and the front and rear sides of the inner bottom surface of the tub 2 to simultaneously define the length and width of the lint packaging and collecting bag 13 to be extended at minimum on the bottom surface of the tub 2, as shown in fig. 11.

4) a plurality of electric induction sheets 7 are fixed on the side surface of the barrel body 2 at intervals, and the electric induction sheets 7 are arranged in a matrix or in a circumference;

5) At least one electric induction sheet 7 is fixed on the left side surface and the right side surface of the barrel body 2 at intervals, and the electric induction sheets 7 fixed on the left side surface and the right side surface of the barrel body 2 extend to the inner bottom surface of the barrel body 2 from the corresponding side surfaces of the barrel body 2;

6) the inner bottom surface of the barrel body 2 is fully distributed with a plurality of electric induction sheets 7 which are arranged at intervals, and the electric induction sheets 7 are arranged in a matrix or in a circumference.

For example, a plurality of electric sensing pieces 7 are fixed between the nearest limit positions of the front and rear sides of the inner bottom surface of the tub 2 and the corresponding side surfaces of the tub 2 at intervals to sense specific positions reached by the bottom of the paper dust packing and collecting bag 13 at different times.

for example, a longitudinally extending electric sensing piece 7 is fixed to each of the left and right sides of the inner bottom surface of the tub 2 only at the corresponding nearest limit position, and as shown in fig. 9, the distance between the electric sensing pieces 7 on the left and right sides, i.e., the limited length of the paper dust packing and collecting bag 13, at the bottom surface of the tub 2, is at least extended, and preferably, the two electric sensing pieces 7 are adjacent to the side plates on the left and right sides of the tub 2, respectively.

for example, a plurality of electric sensing strips 7 arranged at intervals in the transverse direction and a plurality of electric sensing strips 7 arranged at intervals in the longitudinal direction are fixed on the inner bottom surface of the tub 2, as shown in fig. 11 to 13.

At least one capacitor is respectively connected in series in each detection loop formed by the electrical parameter detection unit and each electric induction sheet 7 in series, a first electrode of the capacitor is electrically connected to the control unit or the low-voltage power supply unit, a second electrode of the capacitor is electrically connected to the corresponding electric induction sheet 7, and each electric induction sheet 7 keeps stable charge or voltage before not contacting the paper scrap packaging and collecting bag 13 through the corresponding capacitor.

At least one nearest limit position is set on the inner bottom surface of the barrel body 2, an electric sensing piece 7 is respectively installed at each nearest limit position, when the paper scrap packaging and collecting bag 13 contacts the electric sensing piece 7, the electric parameter of the electric sensing piece 7 changes, and after the electric parameter changes, the electric signal detection unit sends an electric control signal to the control unit. Of course, a nearest limit position can be arranged at a designated position on at least one side surface of the barrel body 2, and a corresponding electric sensing sheet 7 is installed to sense whether the wastepaper packing and collecting bag 13 is attached to the wall body of the barrel body 2. The nearest limit position is adjacent to the corresponding side surface of the tub 2, and preferably, the distance between the nearest limit position and the corresponding side surface of the tub 2 is controlled to be 5-cm.

the designated area of the middle part of the inner bottom surface of the barrel body 2 is set as a minimum limit contact surface, the minimum limit contact surface is not less than half of the inner bottom surface of the barrel body 2, and preferably, the minimum limit contact surface is greater than 2/3 of the inner bottom surface of the barrel body 2, so that the wastepaper packing and collecting bag 13 is ensured to fall in place. The projection of the automatic bag outlet box 3 on the inner bottom surface of the barrel body 2 is set as a projection surface, a dotted line frame shows a minimum limit contact surface, the minimum limit contact surface is larger than the projection surface, and the boundary line of the front side and the rear side of the minimum limit contact surface and the boundary line of the left side and the right side of the minimum limit contact surface respectively form a closest limit position.

at least one electric induction sheet 7 is fixed between the nearest limit positions on the front side and the back side and the corresponding side surface of the barrel body 2 or between the nearest limit positions on the left side and the right side and the corresponding side surface of the barrel body 2, or at least one electric induction sheet 7 is respectively fixed between the nearest limit positions on the front side and the back side and the corresponding side surface of the barrel body 2 and between the nearest limit positions on the left side and the right side and the corresponding side surface of the barrel body 2, and after the charge parameters or the voltage parameters of each electric induction sheet 7 are changed, the control unit generates a stop control signal or a power-off control signal which acts on the pneumatic bag laying device.

in a preferred embodiment, a plurality of sensors including a correlation type photo sensor 8 and an electric sensing piece 7 are installed on a side plate of the barrel 2 to sense the falling height of the paper scrap collecting and packaging bag 13, each dotted line in fig. 6 represents the paper scrap collecting and packaging bag 13 falling to a different position, and each dotted line in fig. 7 represents the corresponding contact surface and size of the bottom of the paper scrap collecting and packaging bag 13 and the barrel 2. A plurality of electric induction sheets 7 are fixed on the inner bottom surface of the barrel body 2 at intervals along the transverse direction or the longitudinal direction, a plurality of electric induction sheets 7 are fixed on the inner bottom surface of the barrel body 2 at intervals along the transverse direction and the longitudinal direction, as shown in fig. 11 to 13, each electric induction sheet 7 can be in a point shape, a block shape or a strip shape, the electric induction sheets 7 are not contacted with each other, and a control unit generates a stop control signal or a power-off control signal after the corresponding electric induction sheets 7 at the nearest limit positions on the left side, the right side, the front side and the rear side are contacted with the paper scrap packaging and collecting bag 13; after the electric induction sheets 7 which are relatively positioned within the nearest limit positions on the left side, the right side and/or the front side and the rear side are contacted with the paper scrap packaging and collecting bag 13, the electric signal detection unit respectively sends a corresponding position signal to the control unit, and the bag falling state indicating device 15 receives the position signal sent by the control unit and displays corresponding indicating graphs or symbols for displaying the real-time position or state of the paper scrap packaging and collecting bag 13 in real time. Of course, the alarm indication may be provided by a speaker.

a voltage adding and holding rod is fixed on the upper portion of the barrel body 2, the outer end of the voltage adding and holding rod extends into the paper scrap collecting port 31, the voltage adding and holding rod is electrically connected to the control unit, the paper scrap packaging and collecting bag 13 moves downwards into the barrel body 2 in the bagging process, and weak voltage is loaded on the paper scrap packaging and collecting bag 13 through the voltage adding and holding rod in the bagging process, so that the paper scrap packaging and collecting bag 13 bears electric charges.

In the process that the paper scrap packaging and collecting bag 13 is gradually unreeled to the barrel body 2 through the air pressure bag paving device, the paper scrap packaging and collecting bag 13 and the automatic bag discharging box 3 rub against each other, a certain amount of charges are carried on the paper scrap packaging and collecting bag 13, when the paper scrap packaging and collecting bag 13 covers a bag falling area, the paper scrap packaging and collecting bag 13 and the electric induction sheet 7 are in electrostatic induction matching, the charges or the voltages of the electric induction sheet 7 are increased, or the charges or the voltages of the electric induction sheet 7 are reduced, and preferably, 3-12V of voltage is loaded to the paper scrap packaging and collecting bag 13 or the electric induction sheet 7.

the control circuit is provided with an electric loading unit, the control unit is electrically connected with the electric loading unit, the electric loading unit is electrically connected with the electric sensing piece 7, and voltage or electric charge is provided for the electric sensing piece 7 through the electric loading unit. Of course, the electrical loading unit may also be electrically connected to the paper scrap packing and collecting bag 13, or the electrical loading unit may be electrically connected to both the paper scrap packing and collecting bag 13 and the electric sensing piece 7. When the paper scrap packaging and collecting bag 13 contacts the corresponding electric induction sheet 7, charge transfer or voltage change is generated between the paper scrap packaging and collecting bag 13 and the electric induction sheet 7, the electric signal detection unit detects the charge change or voltage change of the electric induction sheet 7, the electric signal detection unit sends an electric control signal to the control unit after the charge change or voltage change of the electric induction sheet 7 indicates that the paper scrap packaging and collecting bag 13 is laid in place, and a stop control signal or a power-off control signal is transmitted to the air pressure bag laying device after the control unit receives the electric control signal to control the air pressure bag laying device to stop working and stop continuously outputting the paper scrap packaging and collecting bag 13.

in a preferred embodiment, after the electric signal detection unit sends an electric control signal to the control unit, the control unit controls the air pressure bag laying device to continue to work for a set time and then stop working, that is, controls the air pressure bag laying device to delay and stop working, so as to prevent the opening state from reaching the set state due to the retraction of the paper scrap packaging and collecting bag 13.

The paper shredder is provided with a control key, the control key is electrically connected with the control unit, and the control unit transmits a starting signal to the bag laying control circuit after receiving a key signal of the control key for starting the air pressure bag laying device; at least when the control circuit is powered on and started, in the bag laying process or after the control circuit receives an electric control signal, the control unit sends a power-on execution signal to the electric loading unit and executes at least one initialization power-on action, preferably, the control unit executes the initialization power-on action once after receiving the start signal every time so as to improve the detection accuracy. In the initialization power-up action, the electric loading unit electrically conducts each electric induction sheet 7 and provides a low-voltage direct-current voltage; similarly, the electrical loading unit may also electrically conduct the paper scrap bagging and collecting bag 13, the paper scrap bagging and collecting bag 13 is used to carry a certain amount of electric charges, the opposite side of the paper scrap bagging and collecting bag 13 is opened due to the repulsion of like charges, which may cause the downward paper scrap bagging and collecting bag 13 to maintain a good cylindrical shape under the action of the electric charges, and the paper scrap bagging and collecting bag 13 loaded with the electric charges may also cause the electric charge parameter or the voltage parameter of the electric sensing piece 7 to change when contacting the electric sensing piece 7. Of course, the electrical loading unit can also electrically connect the paper scrap collecting and packaging bag 13 and each electrical sensing piece 7. After the voltage or the charge of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 reaches a set value, the electric loading unit electrically disconnects the paper scrap packaging and collecting bag 13 and each electric induction sheet 7; the electric signal detection unit is always electrically connected with the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 and is used for detecting whether the charge quantity or the charge quantity of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 changes or detecting whether the voltage value or the voltage value of the paper scrap packaging and collecting bag 13 or each electric induction sheet 7 changes or not.

the control circuit is provided with an electric loading unit and a capacitor which are electrically connected with the control unit, a first electrode of the capacitor is electrically connected with the control unit or the electric loading unit, a second electrode of the capacitor is electrically connected with the electric sensing piece 7, the capacitor enables the electric sensing piece 7 to keep a basically stable voltage value after the initialization power-up action is completed, the electric signal detection unit is enabled to have a reference voltage, the charge change or the voltage change of the electric sensing piece 7 is more obvious when the paper scrap packaging and collecting bag 13 contacts the electric sensing piece 7, and the detection accuracy of the electric signal detection unit is improved.

in a preferred embodiment, the opposed photoelectric sensor 8 or the electric sensing strip 7 is mounted in the barrel 2, and the dielectric sheet group may be mounted in the barrel 2, or only the dielectric sheet group may be directly mounted in the barrel 2, and the two dielectric sheets 6 of the dielectric sheet group may be fixed on the inner surfaces of the left and right barrel walls of the barrel 2, respectively.

In a specific embodiment, in the bag body detection step, a dielectric sheet group is installed on the barrel body 2, and the dielectric sheet 6 in the dielectric sheet group is a metal plate, an iron sheet with an insulating paint layer on the surface, or a conductive metal printing layer printed on the side surface of the barrel body 2. Preferably, the dielectric sheet 6 has an insulating layer adhered to the surface thereof, and an insulating paint layer is generally sprayed on the surface of the dielectric sheet 6, for example, an iron sheet with an insulating paint layer sprayed on the surface thereof is selected as the dielectric sheet 6, so that the dielectric sheet 6 is easily obtained, for example, the dielectric sheet 6 can be obtained by a simple iron sheet cutting process and a spraying process, and the cost of the dielectric sheet 6 is extremely low. The voltage loaded on the dielectric sheet set is generally controlled to be 3-12V, the dielectric sheet set can relatively contain a certain amount of charges or keep a certain voltage after being electrified, and the dielectric parameter detection unit can detect the amount of charges or the voltage loaded on the dielectric sheet set.

In the bag body detection step, the electric parameter detection unit selects a capacitance medium parameter detection unit, takes two dielectric sheets 6 of the same dielectric sheet group as capacitance medium sheets in the circuit structure and is respectively and electrically connected with the capacitance medium parameter detection unit, and respectively detects capacitance medium coefficients of the dielectric sheet groups through the capacitance medium parameter detection unit;

each group of dielectric slabs comprises two oppositely-oriented dielectric slabs 6, the two dielectric slabs 6 of the same dielectric slab group are respectively arranged on the left side and the right side or the upper side and the lower side of the barrel body 2 and oppositely oriented, and each dielectric slab 6 extends for a set length at least along the height direction and the width direction;

the control circuit is provided with a control unit, a capacitance medium parameter detection unit and a comparison and conversion unit, and the control unit is respectively and electrically connected with the capacitance medium parameter detection unit, the comparison and conversion unit and the automatic bag feeding device 5;

Receiving each capacitance medium parameter signal through a comparison and conversion unit and transmitting a bag body parameter signal which is obtained through conversion and reflects the falling state of the paper scrap packaging and collecting bag 13 to a control unit;

The control unit receives bag parameter signals to a bag falling state indicating device 15 arranged on the shredder head 1 after receiving the bag parameter signals and simultaneously controls the working state of the automatic bag feeding device 5, the control unit controls the automatic bag feeding device 5 to keep powered on when the bag parameter signals are smaller than a set bag parameter threshold, the control unit controls the automatic bag feeding device 5 to disconnect the power supply when the bag parameter signals are larger than the bag parameter threshold, of course, the control unit can also control the automatic bag feeding device 5 to disconnect the power supply in a delayed mode so as to avoid the situation that the paper scrap packaging and collecting bag 13 retracts after the automatic bag feeding device 5 stops, and the situation that the downward position or the opening degree of the paper scrap packaging and collecting bag 13 is not in place is avoided.

In both the technologies using the electric sensing strip 7 as the sensing element and the technologies using the dielectric strip 6 as the sensing element, a low-voltage dc voltage may be separately provided by the control unit to fill a certain amount of electric charge or maintain a certain voltage before the detection, so as to provide the detection accuracy.

specifically, the control circuit is provided with a low-voltage power supply unit electrically connected to the control unit, and a low-voltage direct-current voltage is respectively provided for each dielectric plate group through the capacitance dielectric parameter detection unit or the low-voltage power supply unit; and at least in the process of electrifying the automatic bag feeding device 5, generating a detection signal at a plurality of intervals at set time intervals by the control unit, receiving the detection signal by the capacitance medium parameter detection unit and respectively detecting the capacitance medium coefficients of the dielectric medium groups.

in a preferred embodiment, the capacitance medium parameter detecting unit selects any one of the following four detection methods or uses any two detection methods in combination for detection,

specifically, the low-voltage power supply unit respectively loads charge or voltage to each corresponding dielectric sheet set continuously or discontinuously; before the dielectric parameter detection unit detects the dielectric parameters of each corresponding dielectric sheet group each time or only in the detection process, the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric sheet group and is disconnected from each corresponding dielectric sheet group within the set time delay; the dielectric parameter detection unit is always electrically connected with each corresponding dielectric sheet group or at least detects that each corresponding dielectric sheet group is electrically conducted after the dielectric parameter detection unit receives the detection signal; the dielectric parameter detection unit detects the maximum charge capacity or the maximum voltage of each corresponding dielectric sheet 6, so as to detect and obtain the dielectric parameters at least including the capacitance dielectric coefficient of each corresponding dielectric sheet group. In the detection process, the dielectric parameter detection unit detects that 3-12V low-voltage direct current voltage is provided for the dielectric sheet set, and the dielectric parameter detection unit detects the capacitance dielectric coefficient of the dielectric sheet set.

in a preferred embodiment, the control circuit is provided with a low-voltage power supply unit which is electrically connected to the control unit; in the detection process, the low-voltage power supply unit provides 3-12V low-voltage direct-current voltage for the dielectric sheet set, and the dielectric parameter detection unit detects the capacitance dielectric coefficient of the dielectric sheet set. Specifically, the control unit generates a detection signal at a set time interval continuously at least in the process of electrifying the automatic bag feeding device 5; the low-voltage power supply unit is always and respectively electrically connected with each corresponding dielectric plate group or is respectively and electrically connected with each corresponding dielectric plate group after the low-voltage power supply unit receives the detection signal and is used for respectively and continuously loading or discontinuously loading charges or voltages to each corresponding dielectric plate group; before the dielectric parameter detection unit detects the dielectric parameters of each corresponding dielectric sheet group each time or only in the detection process, the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric sheet group and is disconnected from each corresponding dielectric sheet group within the set time delay; the dielectric parameter detection unit is always electrically connected with each corresponding dielectric sheet group, or at least detects that each corresponding dielectric sheet group is electrically conducted after the dielectric parameter detection unit receives the detection signal; the dielectric parameter detection unit detects the maximum charge capacity or the maximum voltage of each corresponding dielectric sheet 6, so as to detect and obtain the dielectric parameters at least including the capacitance dielectric coefficient of each corresponding dielectric sheet group.

4) and a capacitor is respectively connected in series or in parallel in a capacitor medium coefficient detection loop formed by connecting the capacitor medium parameter detection unit and each dielectric plate group in series, the corresponding capacitor medium coefficient detection loop is provided with a capacitor medium coefficient reference or forms a capacitor medium coefficient comparison reference through the capacitor, the capacitor medium coefficient reference or the capacitor medium coefficient comparison reference is used as a comparison parameter for detecting the capacitor medium coefficient of each dielectric plate group, and the capacitor medium coefficient of each dielectric plate group is detected through the capacitor medium parameter detection unit.

a plurality of groups of dielectric sheets are arranged in the barrel body 2, the mounting mode of the dielectric sheets is selected from any one or the combination of any two of the following three mounting structures,

1) In a preferred embodiment, only one dielectric sheet group is installed on the barrel 2, as shown in fig. 2, two dielectric sheets 6 of the dielectric sheet group are respectively fixed on the left and right sides of the barrel 2, and the upper and lower ends of the dielectric sheet 6 extend to the upper and lower sides of the barrel 2 along the height direction, or the upper and lower ends of the dielectric sheet 6 are respectively adjacent to the upper and lower sides of the barrel 2, the front and rear ends of the dielectric sheet 6 extend to the front and rear sides of the barrel 2 along the longitudinal direction, or the front and rear ends of the dielectric sheet 6 are respectively adjacent to the front and rear sides of the barrel 2, so that the left and right inner side surfaces of the barrel 2 are respectively covered with one dielectric sheet 6 to form one dielectric sheet group. Wherein the area of one dielectric sheet 6 is 0.2-0.5 square meter, and the area of the dielectric sheet 6 is determined by the barrels 2 with different sizes and specifications. The dielectric sheets 6 with the ultra-large area can contain larger electric charge or electric quantity when a low-voltage direct-current voltage of 3-24V is loaded, or can bear higher voltage, and the influence on the capacitance medium coefficient of the dielectric sheet group is more obvious when the state of the paper scrap packaging and collecting bag 13 descending between the two dielectric sheets 6 changes. Specifically, when the lengths of the paper scrap packaging and collecting bags 13 which go down between the two dielectric sheets 6 are different, or the overlapping areas of the paper scrap packaging and collecting bags 13 which go down between the two dielectric sheets 6 and the dielectric sheets 6 are different, the difference of the charge amount which can be accommodated by the dielectric sheet group is larger after a low-voltage direct-current voltage is provided for the dielectric sheet group, that is, the variation range of the capacitance medium coefficient of the dielectric sheet group is larger, which means that the sensitivity and accuracy in the detection of the capacitance medium coefficient are higher.

2) the barrel body 2 is internally provided with at least two groups of dielectric medium sheet groups, two dielectric medium sheets 6 of the same dielectric medium sheet group are respectively fixed on the left side surface and the right side surface of the barrel body 2, 1-5 groups of dielectric medium sheet groups are arranged at intervals along the side surface of the barrel body 2 in the height direction, and 1-5 groups of dielectric medium sheet groups are arranged at intervals along the side surface of the barrel body 2 in the longitudinal direction;

for example, 3 sets of dielectric sheets are arranged side by side along the longitudinal direction at intervals along the side surface of the barrel body 2 in the height direction, two dielectric sheets 6 of each set of dielectric sheets are respectively fixed on the left and right side surfaces of the barrel body 2 and face oppositely, the upper and lower sides of each dielectric sheet 6 respectively extend to the upper and lower sides of the barrel body 2, and as shown in fig. 3, the dielectric sheets 6 of two sets of dielectric sheets adjacent to each other in the front and back are in clearance fit at intervals.

for example, 3 sets of dielectric sheets are arranged side by side along the height direction at intervals along the height direction on the side surface of the barrel body 2, two dielectric sheets 6 of each set of dielectric sheets are respectively fixed on the left and right side surfaces of the barrel body 2 and face oppositely, the front and rear sides of each dielectric sheet 6 respectively extend to the front and rear sides of the barrel body 2, and the dielectric sheets 6 of two sets of dielectric sheets adjacent to each other up and down are in clearance fit at intervals, as shown in fig. 4.

for example, 3 sets of dielectric sheet groups are arranged at intervals along the side surface of the barrel body 2 in the height direction, 3 sets of dielectric sheet groups are arranged at intervals along the side surface of the barrel body 2 in the longitudinal direction, 9 dielectric sheet groups arranged in a matrix are mounted on side plates of the barrel body 2, the paper scrap packaging and collecting bag 13 can be detected in three sections in the transverse direction and the longitudinal direction, the position state of the three-dimensional paper scrap packaging and collecting bag 13 can be obtained, the three-dimensional state of the paper scrap packaging and collecting bag 13 is simulated and displayed through a graphic display unit, the falling state of the paper scrap packaging and collecting bag 13 is observed more directly and clearly when the paper scrap packaging and collecting bag 13 is automatically conveyed to the barrel body 2, and the position of the bottom of the paper scrap packaging and collecting bag 13 and the state of the bag body can also be observed more.

Preferably, the outer edges of the outer set of dielectric sheets are adjacent to the edges of the corresponding sides of the barrel 2. The whole side surface of the barrel body 2 is basically covered with the dielectric sheets 6, so that the problem of insensitive induction caused by relatively large relative distance between two dielectric sheets 6 of the same dielectric sheet group is solved.

3) the left side surface and the right side surface of the barrel body 2 are provided with at least one group of dielectric sheet groups, the two dielectric sheets 6 of the same dielectric sheet group are respectively fixed on the left side surface and the right side surface of the barrel body 2, the front side and the rear side of the dielectric sheet 6 are respectively adjacent to the edges of the front side and the rear side of the corresponding side surface of the barrel body 2, the lower parts of the two dielectric sheets 6 of the same dielectric sheet group respectively extend to the inner bottom surface of the barrel body 2 from the corresponding side surface of the barrel body 2, and the edges of the two dielectric sheets 6 which extend to the inner bottom surface of the barrel body 2 and belong to the same dielectric sheet group.

preferably, the lower parts of the two dielectric sheets 6 of the same dielectric sheet group respectively extend from the corresponding side surfaces of the barrel body 2 to the inner bottom surface of the barrel body 2, and the upper parts respectively extend to the side of the automatic bag outlet box 3 or extend to the bottom surface of the shredder head 1. Of course, an iron piece electrically connected to the corresponding dielectric piece 6 may be fixed to both sides of the exhaust port 11 on the bottom surface of the shredder head 1, respectively, to form a C-shaped dielectric piece group.

the capacitance medium coefficient can be detected by various technologies, and is calculated by detecting at least one of the maximum charge quantity, the maximum voltage parameter, the maximum current parameter or the shortest charging time which can be accommodated by the corresponding dielectric sheet group; for example, the maximum charge amount carried by the dielectric sheet group is directly detected and the capacitance medium coefficient is calculated, for example, the capacitance medium coefficient is calculated by detecting the time required for loading the low-voltage direct-current voltage and enabling the voltage of the dielectric sheet group to reach a set value, for example, the capacitance medium coefficient is calculated by detecting the maximum current value of the loaded low-voltage direct-current voltage, and therefore, the used technical parameter for detecting the capacitance medium coefficient can be the current, the voltage, the charge or the time.

In a preferred embodiment, the control circuit is provided with a storage unit electrically connected to the control unit, the storage unit stores a relationship conversion table obtained by a pre-test and a corresponding bag parameter threshold for controlling the automatic bag feeding device 5 to disconnect the power supply, the relationship conversion table comprises a plurality of sets of bag parameters corresponding to the bag position and shape of the paper scrap packaging and collecting bag 13 and capacitor medium parameters corresponding to the bag parameters one by one, the bag parameters comprise at least one of bag parameter values, bag parameter interval values or position codes representing the falling height, falling length, reaching interval or bag shape of the paper scrap packaging and collecting bag 13, the capacitor medium parameters comprise capacitor medium values or capacitor medium interval values of capacitor medium coefficients of the dielectric sheet sets corresponding to the corresponding bag parameters, and after the comparison conversion unit receives the capacitor medium parameters, the comparison conversion unit compares and converts the comparison conversion unit according to the relationship conversion table to obtain a corresponding bag parameter value So as to obtain a bag parameter signal containing the bag parameter, and the control unit receives the bag parameter signal.

The invention also discloses a paper shredder, which is used for realizing the automatic paper scrap packaging method of the paper shredder, and the working process of the automatic paper scrap packaging method of the paper shredder is explained in the above description, and is not repeated. A paper scrap automatic packaging paper shredder is shown in figures 1 to 13 and comprises a control circuit, a paper shredder head 1 and a barrel body 2, wherein the paper shredder head 1 is arranged at the upper part of the barrel body 2, the upper part of the paper shredder head 1 is provided with a paper inlet 12, the lower part of the paper shredder head 1 is provided with a scrap discharge port 11, an inner cavity of the paper shredder head 1 is provided with a paper shredder core, the paper shredder core is fixed with a motor and a paper shredding transmission mechanism, a paper shredding knife bar comprises a knife shaft and a plurality of paper shredding knife blades which are alternately arranged in series and fixed on the knife shaft, two corresponding adjacent paper shredding knife blades of the two paper shredding knife bars are in shearing fit, the outer edge of each knife blade is provided with a knife tip, the control circuit is electrically connected with the motor, the motor is in transmission connection with the paper shredding transmission mechanism, the paper shredding knife bar is in transmission connection with the paper shredder bar, articles such as paper or documents are thrown in through the paper inlet 12, and discharges paper dust downward through a dust discharge port 11 provided below the paper shredder bar. The control circuit is provided with a control unit and an electrical parameter detection unit.

The barrel body 2 is provided with a safety switch or a starting switch which is electrically connected with the control unit and is in contact press fit with the inner barrel or the door plate 20 for conducting power.

Specifically, the width of the paper scrap collecting port 31 is not less than the width of the scrap discharging port 11, and the length of the paper scrap collecting port 31 is not less than the length of the scrap discharging port 11; the front surface of the barrel body 2 is provided with a door panel 20 which is opened in a rotating way or an external pulling type inner barrel is movably arranged in the barrel body 2, the front surface of the inner barrel is fixed with the door panel 20, the door panel 20 is in sealing fit with the barrel body 2, and the middle part of the door panel 20 is provided with a transparent observation window 21. When the door panel 20 is closed in front of the barrel body 2, the lower part of the paper scrap packaging and collecting bag 13 sealed by hot melting seals the paper scrap collecting opening 31, the automatic bag outlet box 3 is sealed at the upper part of the barrel body 2, so that a relatively sealed space is formed in the inner cavity of the barrel body 2, and after the air exhaust fan arranged at the lower part of the barrel body 2 starts to exhaust air, negative pressure is formed in the inner cavity of the barrel body 2, so that the paper scrap packaging and collecting bag 13 can be smoothly conveyed downwards, which is shown in fig. 2 to 5.

An automatic bag outlet box 3 with an inner cavity pre-stored with a paper scrap packaging and collecting bag 13 or capable of storing and reloading the paper scrap packaging and collecting bag 13 is fixedly or movably clamped at the bottom of the shredder head 1 or the upper part of the barrel body 2.

an automatic bag outlet box 3 is arranged at the bottom of the shredder head 1, as shown in fig. 5 and 6, or the upper part of the barrel body 2 is provided with the automatic bag outlet box 3, an inner cavity of the automatic bag outlet box 3 stores a paper scrap packaging and collecting bag 13, or the automatic bag outlet box 3 is arranged into a bag storage inner cavity 33 capable of storing the paper scrap packaging and collecting bag 13, the middle part of the automatic bag outlet box 3 is provided with a paper scrap collecting opening 31 which is used for collecting paper scraps and vertically penetrates through the automatic bag outlet box 3, and the paper scrap collecting opening 31 is positioned below the scrap discharging opening 11; specifically, the automatic bag outlet box 3 comprises a frame with a hollow middle part for forming a paper scrap collecting port 31, the frame is in a circular ring shape or a shape like a Chinese character 'hui', an installation position is arranged at the bottom of the shredder head 1 or the upper part of the barrel body 2, the frame is positioned and clamped in the installation position, a sealing gasket is fixed at the installation position or at the bottom surface or the side surface of the frame, and the top surface, the side surface or the bottom surface of the frame is in sealing fit or positioning fit with a corresponding connection surface of the installation position so as to realize that the paper scrap packaging and collecting bag 13 is sent into the barrel body 2 in a blowing or air suction mode.

the frame is provided with a storage bag inner cavity 33, the storage bag inner cavity 33 is in a circular ring body shape or a shape like a Chinese character 'hui', as shown in fig. 6, the storage bag inner cavity 33 stores the wastepaper packaging and collecting bag 13 which is continuous along the length direction and is in a cylinder shape after being unfolded, the wastepaper packaging and collecting bag 13 is a through bag which is continuous and only has an opening at the end part, the wastepaper packaging and collecting bag 13 is generally in a cylinder shape, the opening at the upper part of the storage bag inner cavity 33 forms an outlet opening 32, the frame is fixed or clamped with a cover body 34, and the cover body 34 can be opened to store the wastepaper packaging and collecting bag 13 in the storage bag inner; the automatic bag outlet box 3 is provided with a bag outlet 32 at the inner side, and the bag outlet 32 surrounds the wastepaper collecting port 31 for a circle. The wastepaper that will save in the inner chamber through going out sack 32 packs and collects bag 13 and exports outward, make the wastepaper packing collect bag 13 downwardly extending to the bottom of staving 2, the upper portion opening that stretches out the wastepaper packing of automatic play bag box 3 and collect bag 13 forms the paper opening that falls that is greater than chip removal mouth 11, collect the wastepaper that drops through the paper opening that falls, collect the wastepaper through the wastepaper packing to realize collecting bag 13 through the wastepaper packing, make the clearance of wastepaper simpler and convenient, avoid the wastepaper to fly upward all around or pollute the subassembly of reducing mill. The shredded paper scraps which drop downwards are smashed by the shredded paper knife rod and drop downwards into the shredded paper packaging bag from the scrap discharge port 11 under the action of self weight, the problem that the shredded paper scraps are easily adhered to the wall of the barrel when only the barrel body 2 is adopted to directly collect the shredded paper scraps in the prior art is solved, flying of the shredded paper scraps can be avoided, and the energy-saving and environment-friendly effects are achieved.

The barrel body 2 is a paper scrap collecting barrel for collecting paper scraps of the conventional paper shredder, but the barrel body 2 is not used for directly collecting the paper scraps, the paper scraps generated in the paper shredding process are all collected in the paper scrap packing and collecting bag 13, and the barrel body 2 is only used for accommodating the paper scrap packing and collecting bag 13.

In order to realize automatic conveying of the paper scrap packaging and collecting bag 13 into the barrel body 2, the paper shredder head 1 or the barrel body 2 is provided with an automatic bag feeding device 5, of course, the paper shredder head 1 and the barrel body 2 can also be respectively provided with the automatic bag feeding device 5, the automatic bag feeding device 5 comprises an air pressure bag laying device and a mechanical bag pressing mechanism, and the automatic bag feeding device 5 is positioned above or below the automatic bag outlet box 3. Wherein, the air pressure bag laying device adopts a positive pressure bag blowing device or a negative pressure bag sucking device.

The control unit is electrically connected with the automatic bag feeding device 5, the paper shredder is provided with a control key electrically connected with the control unit, and after the control unit receives a key signal of the control key, the control unit transmits a starting signal to the automatic bag feeding device 5 or directly electrically conducts the automatic bag feeding device 5, so that the paper scrap packaging and collecting bag 13 in the automatic bag discharging box 3 is output to the barrel body 2;

A bag body sealing and fusing device is arranged below the automatic bag outlet box 3 and is electrically connected with the control unit; the side surface or the inner bottom surface of the barrel body 2 is provided with at least one electric induction sheet 7 or a dielectric sheet set which is electrically connected with the electric parameter detection unit, the electric parameter detection unit continuously detects or repeatedly detects the electric induction sheet 7 or the dielectric sheet set at intervals in the automatic bag placing process to respectively obtain an electric parameter, and the electric parameter detection unit continuously or repeatedly transmits a bag body parameter signal at least comprising a bag falling state representing the wastepaper packaging and collecting bag 13 and a bag body shape to the control unit according to the received electric parameter in the automatic bag placing process; the control unit generates a power-off control signal acting on the automatic bag feeding device 5 or automatically controls the working state of the automatic bag feeding device 5 according to the received bag parameter signal, and is used for controlling the automatic bag feeding device 5 to stop working immediately or stop working in a delayed manner, the control unit controls the automatic bag feeding device 5 to keep powered-on working when the bag parameter signal received by the control unit is smaller than a set bag parameter threshold value, and the control unit generates an electric control signal or controls the automatic bag feeding device 5 to disconnect the power supply or disconnect the power supply in a delayed manner when the bag parameter signal received by the control unit is larger than the bag parameter threshold value.

The automatic bag feeding device 5 in the paper shredder selects any one or any two combinations of the following three structures,

1) the automatic bag feeding device 5 selects a mechanical bag pressing mechanism arranged inside or at the bottom of the shredder head 1, the mechanical bag pressing mechanism comprises a bag feeding driving mechanism and a bag pushing mechanism, the bag feeding driving mechanism is in transmission connection with the bag pushing mechanism, and the bag pushing mechanism selects a bag pushing rod, a bag pushing plate and a bag pushing connecting rod which can extend into the barrel body 2 or a heavy object which can fall into the barrel body 2 through self weight to realize that the lower hot-melt sealed wastepaper packaging and collecting bag 13 is fed into the barrel body 2;

2) the automatic bag feeding device 5 adopts a positive pressure bag blowing device arranged at the bottom of the shredder head 1 or at the upper part of the barrel body 2, the positive pressure bag blowing device is arranged above the automatic bag discharging box 3,

The positive pressure bag blowing device comprises a blowing fan which is electrically connected with the control unit, the blowing fan is fixedly arranged above the automatic bag outlet box 3, the blowing fan is provided with an air inlet surface and an air outlet surface, and the air outlet surface of the blowing fan faces to or is communicated with the paper scrap collecting opening 31;

3) the automatic bag feeding device 5 adopts a negative pressure bag suction device arranged at the lower part or the bottom of the barrel body 2,

the negative pressure bag pulling device comprises an air exhaust fan electrically connected to the control unit and an air exhaust opening 14 formed in a bottom plate or a side plate of the barrel body 2, the air exhaust fan is fixedly arranged at the air exhaust opening 14 and is provided with an air inlet surface and an air outlet surface, the air inlet surface of the air exhaust fan faces or is communicated with the barrel body 2, and the air inlet surface of the air exhaust fan is in sealing fit with the edge of the air exhaust opening 14;

1) the electrical parameter detection unit is always electrically connected to each electric induction sheet 7 or each dielectric sheet group, continuously detects the electrical parameters of each electric induction sheet 7 or each dielectric sheet group, and transmits bag body parameter signals to the continuous control unit;

2) the electrical parameter detection unit is always electrically connected with each electric induction sheet 7 or each dielectric sheet group, the electrical parameter detection unit continuously detects the electrical parameters of each electric induction sheet 7 or each dielectric sheet group for multiple times at set time intervals, and the electrical parameter detection unit respectively transmits a bag body parameter signal to the control unit after each detection;

3) the control unit generates a detection signal transmitted to the electrical parameter detection unit at set time intervals, after the electrical parameter detection unit receives the corresponding detection signal every time, the electrical parameter detection unit continuously detects for at least three times at intervals in a set time period and obtains a corresponding electrical parameter after each detection, the control circuit is provided with a comparison conversion unit which is electrically connected with the control unit, the comparison and conversion unit is used for carrying out average calculation on a plurality of electrical parameters detected in the same time period to obtain an electrical parameter average value, the comparison and conversion unit is used for carrying out conversion on the electrical parameter average value obtained by calculation to obtain a bag body parameter signal, the comparison and conversion unit is used for continuously transmitting the bag body parameter signal to the control unit for a plurality of times at intervals, so as to realize detection to obtain an accurate electrical parameter and convert to obtain an accurate bag parameter signal;

4) the electric parameter detection unit is always electrically connected with each electric induction sheet 7 or each dielectric sheet group, the electric parameter detection unit only detects the electric parameters of each electric induction sheet 7 or each dielectric sheet group, the control circuit is provided with a low-voltage power supply unit electrically connected with the control unit, the paper scrap packaging and collecting bag 13 and/or the electric induction sheet 7 are electrically connected with the electric parameter detection unit, or the paper scrap packaging and collecting bag 13 or the electric induction sheet 7 are electrically connected with the electric parameter detection unit and the low-voltage power supply unit respectively;

The control unit generates a detection signal transmitted to the electrical parameter detection unit at set time intervals; the low-voltage power supply unit is always electrically connected to each electric induction sheet 7 or each dielectric sheet group respectively, or is only electrically connected to each electric induction sheet 7 or each dielectric sheet group after the low-voltage power supply unit receives the low-voltage power supply unit each time and is disconnected in time to electrically connect the low-voltage power supply unit and the dielectric sheets, and the low-voltage power supply unit is used for providing a low-voltage direct-current voltage for each electric induction sheet 7 or;

each group of dielectric sheet sets comprises two oppositely-oriented dielectric sheets 6, and the two dielectric sheets 6 of the same dielectric sheet set are used as capacitance dielectric sheets in the circuit structure and are respectively and electrically connected with the capacitance dielectric parameter detection unit;

the shredder is provided with a bag falling state indicating device 15 electrically connected with the control unit, and the control unit sends a bag parameter signal to the bag falling state indicating device 15 and controls the working state of the automatic bag feeding device 5;

the bag body parameter signals at least comprise position signals of the bottom arrival of the paper scrap packaging and collecting bag 13 and position information of the bag edge extension arrival of the paper scrap packaging and collecting bag 13;

the designated position at least to be reached by the side surface or the bottom surface of the paper scrap packaging and collecting bag 13 in the automatic bag placing process is set as a nearest limit position, at least one nearest limit position is set on the side surface of the barrel body 2 or the inner bottom surface of the barrel body 2, and at least one electric induction sheet 7 or dielectric sheet group is installed at each nearest limit position;

the designated area of the middle part of the inner bottom surface of the barrel body 2 is set as a minimum limit contact surface, the projection of the automatic bag outlet box 3 on the inner bottom surface of the barrel body 2 is set as a box body projection surface, the minimum limit contact surface is larger than the box body projection surface, and the boundary line of the front side and the rear side of the minimum limit contact surface and the boundary line of the left side and the right side of the minimum limit contact surface are respectively set as a nearest limit position;

The electric induction sheet 7 is a metal plate fixed on the inner bottom surface of the barrel body 2, an iron sheet with a conductive surface on the surface, a metal block or a printed conductive layer printed on the inner bottom surface of the barrel body 2;

the electric induction sheet 7 is made of a metal plate fixed on the inner bottom surface of the barrel body 2, an iron sheet with a conductive surface on the surface, a metal block or a printed conductive layer printed on the inner bottom surface of the barrel body 2, and preferably, an iron sheet with a conductive surface on the surface, a capacitor or a capacitor dielectric sheet is selected as the electric induction sheet 7. The printed conductive layer printed on the inner bottom surface of the barrel body 2 is used as the electric induction sheet 7, and the printed conductive layer can be printed into any shape and any number according to design requirements.

1) when the paper scrap packaging and collecting bag 13 contacts the corresponding electric induction sheet 7 at the nearest limit position, charge transfer or voltage change is generated between the paper scrap packaging and collecting bag 13 and the electric induction sheet 7, the electric parameter detection unit sends an electric control signal to the control unit, and the control unit receives the electric control signal and then sends a stop control signal or a power-off control signal to the automatic bag feeding device 5;

2) when the paper scrap packing and collecting bag 13 enters a space between two dielectric sheets 6 of the same dielectric sheet group, the capacitance medium coefficient of the corresponding dielectric sheet group changes, and when the capacitance medium coefficient of the corresponding dielectric sheet group reaches a set parameter value or falls into a set parameter interval, or after the capacitance medium coefficient of the dielectric sheet group at a specified position or at the nearest limit position changes, the electrical parameter detection unit sends an electrical control signal to the control unit, and the control unit receives the electrical control signal and then sends a stop control signal or a power-off control signal to the automatic bag feeding device 5.

at least one electric sensing piece 7 is arranged in the barrel body 2, each electric sensing piece 7 electrically connected with the electric parameter detection unit respectively forms a detection loop, the installation structure of the electric sensing piece 7 selects any one of the following six installation structures or any two of the six installation structures in combination,

1) At least one electric induction sheet 7 is fixed between the nearest limit positions of the front side and the rear side of the inner bottom surface of the barrel body 2 and the corresponding side surface of the barrel body 2 at intervals;

6) a plurality of electric induction sheets 7 which are arranged at intervals are fully distributed on the inner bottom surface of the barrel body 2, and the electric induction sheets 7 are arranged in a matrix or in a circumference;

at least one group of dielectric slice groups are arranged in the barrel body 2, each dielectric slice group electrically connected with the electrical parameter detection unit respectively forms a detection loop, the mounting mode of the dielectric slice groups selects any one or the combination of any two of the following three mounting structures,

1) Only one group of dielectric sheets is installed in the barrel body 2, two dielectric sheets 6 of the dielectric sheets are respectively fixed on the left side and the right side of the barrel body 2, the upper end and the lower end of each dielectric sheet 6 in the height direction respectively extend to the upper side and the lower side of the barrel body 2 or the upper side and the lower side adjacent to the barrel body 2, and the front end and the rear end of each dielectric sheet 6 in the longitudinal direction respectively extend to the front side and the rear side of the barrel body 2 or the front side and the rear side adjacent to the barrel body.

3) At least one group of dielectric slabs are arranged in the left side surface and the right side surface of the barrel body 2, two dielectric slabs 6 of the same dielectric slab group are respectively fixed on the left side surface and the right side surface of the barrel body 2, and the lower parts of the dielectric slabs 6 respectively extend to the inner bottom surface of the barrel body 2 from the corresponding side surfaces of the barrel body 2;

at least one capacitor is connected in series in each detection loop, a first electrode of each capacitor is respectively and electrically connected to the control unit or the low-voltage power supply unit, and a second electrode of each capacitor is respectively and electrically connected to the corresponding electric induction sheet 7 or the corresponding dielectric sheet group.

specifically, the bag falling state indicating device 15 of the present invention selects a speaker sound alarm, an indicator light, an LED indicator light group with multi-level indication, an indicator symbol with a graphic display area or a graphic display unit, and is used for indicating the bag falling condition of the wastepaper packaging and collecting bag 13, and indicating or simulating the bag falling state or bag shape of the wastepaper packaging and collecting bag 13 conveyed into the barrel 2 by the bag falling state indicating device 15.

for example, the shredder head 1 of the shredder is mounted with a bag-falling state indicating device 15 electrically connected to the control unit, the bag-falling state indicating device 15 is an electronic display screen or an indicator light, and the bag-falling state indicating device 15 has a figure or symbol which is similar to and indicates the position or state of the paper scrap packing collection bag 13 fed into the tub 2, as shown in fig. 8 and 9.

the indication form of the bag falling state indicating device 15 includes an indication form of an audible alarm through a speaker, a display form of an indication through a digital percentage, a display form of an indication through a progress bar, a display form of an indication through a column height bar, a display form of a sequential lighting indication or a stepwise lighting indication through each LED lamp in the LED group, a display form of a symbol or a simulation graphic indication representing the state of the bag body falling into the tub 2 by simulation.

The indication content of the graphic display unit comprises the automatic bag placing progress of the paper scrap packaging and collecting bag 13, the bag falling height of the paper scrap packaging and collecting bag 13 or the bag body opening form of the paper scrap packaging and collecting bag 13; as shown in fig. 7, the bag falling state indicating device 15 indicates the position of the bottom of the paper scrap collecting bag 13 or the bag falling condition of the paper scrap collecting bag 13 respectively through a plurality of indicator lights, or the bag falling state indicating device 15 indicates the position of the bottom of the paper scrap collecting bag 13 or the bag falling condition of the paper scrap collecting bag 13 through a speaker voice broadcast by the speaker.

according to the number and the installation positions of the dielectric sheets 6, the positions of the bottoms of the paper scrap packaging and collecting bags 13 can be displayed in a grading mode by combining the detection mode of the dielectric parameter detection unit, and meanwhile, the expansion conditions of the paper scrap packaging and collecting bags 13 in the length direction or the width direction can be displayed in a grading mode, namely the positions of the paper scrap packaging and collecting bags 13 reached at the outer edges in the length direction or the width direction; the real-time position of the bottom of the paper scrap packaging and collecting bag 13 can be synchronously and continuously simulated and displayed in real time through the graphic display unit, the expansion condition of the paper scrap packaging and collecting bag 13 in the length direction or the width direction can be synchronously and continuously simulated and displayed in real time through the graphic display unit, and a user can more directly and clearly know the state of the paper scrap packaging and collecting bag 13. If the spreading state of the paper scrap packaging and collecting bag 13 does not meet the requirement of the user after the air pressure bag laying device stops working, the user can touch and press the control key again to control the air pressure bag laying device to carry out bag laying work again, so that the spreading state of the paper scrap packaging and collecting bag 13 meets the requirement of the user.

the above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. the automatic paper scrap packing method for the paper shredder is characterized in that: comprises the following steps of (a) carrying out,

2. the automatic paper scrap packing method for the paper shredder according to claim 1, characterized in that: the bag body position and/or the bag body shape of the wastepaper packaging and collecting bag are/is detected and judged in an auxiliary way through a plurality of groups of opposite type photoelectric sensors which are arranged at different height positions on the side surface of the barrel body and/or different positions on the inner bottom surface of the barrel body;

3. the automatic paper scrap packing method for the paper shredder according to claim 1, characterized in that: in the step of installing the automatic bag outlet box, the automatic bag outlet box comprises a frame with a middle part hollowed to form the paper scrap collecting opening, and the frame is in a circular ring body shape or a shape like a Chinese character 'hui', so that the width of the paper scrap collecting opening is not smaller than the width of the chip removal opening, and the length of the paper scrap collecting opening is not smaller than the length of the chip removal opening;

4. the shredder for automatically detecting bags according to any one of claims 1 to 3, wherein: in the bag body detection step, the electric induction sheets are arranged on the barrel body, the electric parameter detection unit is a charge detection unit or a voltage detection unit, and the electric quantity, the charge variation, the voltage or the voltage variation of each electric induction sheet are respectively detected by the electric parameter detection unit;

5. the automatic paper scrap packing method for the paper shredder according to claim 4, characterized in that: at least when the control circuit is powered on and started, in the automatic bag placing process or after the control circuit receives the electric control signal, sending a power-up execution signal to the low-voltage power supply unit through the control unit and executing at least one initial power-up action, and electrically conducting the paper scrap packaging and collecting bag and/or each electric induction sheet through the electric parameter detection unit or the low-voltage power supply unit in the initial power-up action to provide a low-voltage direct-current voltage for the paper scrap packaging and collecting bag or each electric induction sheet;

6. the automatic paper scrap packing method of a paper shredder according to any one of claims 1 to 3, characterized in that: in the bag body detection step, the dielectric sheet groups are installed on the barrel body, in the bag body detection step, the electric parameter detection unit selects a capacitance medium parameter detection unit, two dielectric sheets of the same dielectric sheet group are used as capacitance medium sheets in the circuit structure and are respectively and electrically connected to the capacitance medium parameter detection unit, and capacitance medium coefficients of the dielectric sheet groups are respectively detected through the capacitance medium parameter detection unit;

7. The automatic paper scrap packing method for the paper shredder according to claim 6, wherein: the control circuit is provided with a low-voltage power supply unit which is electrically connected with the control unit, and a low-voltage direct-current voltage is respectively provided for each dielectric sheet set through the capacitance medium parameter detection unit and/or the low-voltage power supply unit;

1) only one group of dielectric sheet groups are arranged in the barrel body, two dielectric sheets of the dielectric sheet groups are respectively fixed on the left side and the right side of the barrel body, the upper end and the lower end of each dielectric sheet along the height direction respectively extend to the upper side and the lower side of the barrel body or the upper side and the lower side adjacent to the barrel body, and the front end and the rear end of each dielectric sheet along the longitudinal direction respectively extend to the front side and the rear side of the barrel body or the front side and the rear side adjacent to the barrel body;

8. the automatic paper scrap packing method for the paper shredder according to claim 6, wherein: the control circuit is provided with a storage unit which is electrically connected with the control unit, a relation conversion table obtained by a pre-test and a bag body parameter threshold value which correspondingly controls the automatic bag feeding device to disconnect the power supply are stored in the storage unit,

9. an automatic paper scrap packaging shredder for realizing the automatic paper scrap packaging method of the shredder according to any one of claims 1 to 8, which comprises a control circuit, a shredder head and a barrel body, wherein the shredder head is arranged on the upper part of the barrel body, the upper part of the shredder head is provided with a paper inlet, the lower part of the shredder head is provided with a scrap discharging port, the inner cavity of the shredder head is provided with a shredder core, the shredder core is provided with a motor, a transmission mechanism and a shredder knife bar, the motor is in transmission connection with the transmission mechanism, the transmission mechanism is in transmission connection with the shredder knife bar, the paper inlet is positioned above the shredder knife bar, and the scrap discharging port is positioned below the shredder knife bar, and the automatic paper scrap packaging shredder is characterized in: the control circuit is provided with a control unit and an electrical parameter detection unit,

10. the automatic wastepaper packaging shredder according to claim 9, characterized in that: the automatic bag outlet box comprises a frame with a hollow middle part to form the paper scrap collecting opening, the frame is in a circular ring body shape or a shape like a Chinese character 'hui', the width of the paper scrap collecting opening is not smaller than the width of the scrap discharging opening, and the length of the paper scrap collecting opening is not smaller than the length of the scrap discharging opening;

11. the automatic wastepaper packaging shredder according to claim 10, wherein:

at least one electric sensing piece is arranged in the barrel body, each electric sensing piece electrically connected with the electric parameter detection unit forms a detection loop respectively, the installation structure of the electric sensing piece selects any one of the following six installation structures or combines any two of the six installation structures,