CN110548573B

CN110548573B - Paper scrap automatic packaging paper shredder and paper scrap automatic packaging method of paper shredder

Info

Publication number: CN110548573B
Application number: CN201910845036.2A
Authority: CN
Inventors: 熊应杰; 李钦灿; 李勇
Original assignee: Guangdong Bangze Chuangke Electric Appliance Co Ltd
Current assignee: Guangdong Bangze Chuangke Electric Appliance Co Ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2023-06-30
Anticipated expiration: 2039-09-07
Also published as: CN110548573A

Abstract

The invention discloses an automatic paper scrap packing shredder and an automatic paper scrap packing method of the shredder, which have the following advantages compared with the prior art: the automatic paper scrap packing and collecting bag is sealed and fused by the automatic bag conveying device, and whether the paper scrap packing and collecting bag is conveyed in place or not is automatically detected, so that the full-automatic bag conveying is realized, the automatic paper scrap packing and collecting bag is high in automation degree and convenient to use.

Description

Paper scrap automatic packaging paper shredder and paper scrap automatic packaging method of paper shredder

Technical Field

The invention relates to the technical field of paper shreds, in particular to an automatic paper shredder for packaging paper shreds and an automatic paper shredder paper shred packaging method.

Background

The shredder is used for shredding articles such as files, and the shredder is provided with a garbage can at the lower part of the shredder head and receives fallen paper scraps through the garbage can. However, the broken paper scraps can fly around due to static electricity sticking on the barrel wall, so that the cleaning is difficult and the use is inconvenient. On the other hand, the upper part or the side surface of the dustbin is generally provided with electronic components such as a detector, an inductor or an induction switch, and the electronic components are used for detecting the height of paper scraps in the dustbin or are used for special purposes, and the paper scraps can adhere to the surface of the detector, so that the detector is disabled.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an automatic paper scrap packaging paper shredder and an automatic paper scrap packaging method for the paper shredder, which are characterized in that the paper scrap packaging and collecting bag is used for automatically collecting the crushed paper scraps, so that the automation degree is high, the pollution caused by the paper scraps is avoided, and the paper scrap packaging and paper scrap packaging method is cleaner.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the automatic paper scrap packing method of paper shredder includes the following steps,

the automatic bag discharging box is mounted, the automatic bag discharging box storing the paper scrap packing and collecting bag is clamped at the upper part of the barrel body or at the bottom of the paper shredder head, the paper scrap packing and collecting bag in the automatic bag discharging box is pulled out outwards through a bag discharging opening arranged around the automatic bag discharging box and downwards passes through the paper scrap collecting opening arranged in the middle of the automatic bag discharging box, and a paper falling opening positioned below the chip discharging opening of the paper shredder is formed at the upper part of the paper scrap packing and collecting bag output by the paper scrap packing and collecting bag in the automatic bag discharging box;

A hot melt sealing fusing step, namely, thermally melt sealing the bag body of the paper scrap packing and collecting bag which extends out of 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 packing and collecting bag forms a first hot melt sealing part and seals the lower part of the first hot melt sealing part;

an automatic bagging step, namely conveying the paper scraps packaging and collecting bag 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 of installing at least one electric induction sheet or dielectric sheet group electrically connected with the electric parameter detection unit on the side surface and/or the inner bottom surface of the barrel body, detecting the electric parameters of the electric induction sheet or dielectric sheet group by detecting 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 in the process of executing the automatic bagging step,

the electrical parameter detection unit continuously or intermittently transmits a bag body parameter signal at least comprising a bag falling state and/or a bag body shape representing a paper dust packing and collecting bag to a control unit in the control circuit for a plurality of times in the process of executing the automatic bag placing step;

stopping the bag placing step, receiving the bag body parameter signals 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 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 to keep the power-on work and continuously conveys 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 or delay to disconnect the power supply;

a paper shredding step, namely throwing paper into a paper inlet at the upper part of a paper shredder head, shredding the paper by a paper shredding knife rod arranged in the paper shredder head, enabling paper scraps formed after shredding by the paper shredding knife rod to drop downwards into a paper scraps collecting opening of an automatic bag discharging box through a chip discharging opening arranged below the paper shredding knife rod, enabling all paper scraps to drop downwards into a paper scraps packing collecting bag through a paper falling opening, and collecting the paper scraps through a paper scraps packing collecting bag with a lower sealing and upper opening;

and a sealing bag cutting step, namely, the upper bag body of the paper scraps packing and collecting bag which extends below the automatic bag discharging box is sealed in a hot melt mode through a bag body sealing fusing device, a second hot melt sealing part is formed, and the second hot melt sealing part is cut off or the bag body above the second hot melt sealing part is cut off through a cutting mechanism or a fusing mechanism.

Further, the bag body position and/or the bag body shape of the paper dust packing and collecting bag are detected and judged in an auxiliary mode through a plurality of groups of correlation type photoelectric sensors which are arranged at different height positions of the side face of the barrel body and/or different positions of the inner bottom face of the barrel body;

receiving photoelectric sensing signals of all correlation photoelectric sensors through a control unit, and after the control unit receives the photoelectric sensing signals, sending a bag body parameter signal and/or controlling the working state of the automatic bag feeding device to a bag falling state indicating device arranged on a paper shredder by the control unit;

the bag body parameter signals at least comprise position signals reached by the bottom of the paper scrap packing and collecting bag and position information reached by the extending edge of the paper scrap packing and collecting bag;

the bag falling state indicating device indicates or simulates and displays the bag falling state or the bag body shape of the paper scraps packing and collecting bag conveyed into the barrel body;

the bag falling state or the bag body form of the paper scraps packing and collecting bag is detected by utilizing a correlation photoelectric sensor combination arranged in a combined way and by adopting a photoelectric sensing detection mode, at least one of the following three photoelectric sensing detection modes is selected,

1) Sensing the position reached by the bottom of the paper dust packing and collecting bag through opposite-type photoelectric sensors arranged at different height positions of 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 of the side surface of the barrel body, and respectively arranging a photoelectric signal emitting part and a photoelectric signal receiving part of each group of opposite-type photoelectric sensors in a corresponding directional shielding chamber of the side surface of the barrel body;

2) The method comprises the steps that a plurality of groups of opposite-type photoelectric sensors are arranged at the front and rear intervals of the same height position of the side face of the barrel body to sense the position where the bag edge of the paper dust packing and collecting bag extends, the plurality of groups of opposite-type photoelectric sensors are arranged at the front and rear intervals of the same height position of the side face of the barrel body, and a photoelectric signal transmitting part and a photoelectric signal receiving part of each group of opposite-type photoelectric sensors are respectively arranged in a corresponding directional shielding chamber of the side face of the barrel body;

3) The method comprises the steps that a plurality of groups of opposite-type photoelectric sensors are arranged on the inner bottom surface of a barrel body at intervals in the front-back direction, the positions where the edges of paper scraps packing and collecting bags extend are sensed, the plurality of groups of opposite-type photoelectric sensors are arranged on the inner bottom surface of the barrel body at intervals in the plurality of positions, and photoelectric signal emitting parts and photoelectric signal receiving parts of the groups of opposite-type photoelectric sensors are respectively arranged in corresponding directional shielding chambers of the inner bottom surface of the barrel body; wherein, the directional shielding chamber positioned on the side surface of the barrel body adopts a column hole which is transversely arranged or a flat groove which is horizontally arranged; the directional shielding chamber positioned on the inner bottom surface of the barrel body is a column hole or a flat groove which is vertically arranged; 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-type photoelectric sensor arranged in the directional shielding chamber, or the photoelectric signal transmitting part and the photoelectric signal receiving part of each opposite-type photoelectric sensor are respectively contracted in the directional shielding chamber;

The photoelectric signal emitting direction and the photoelectric signal covering shape of the photoelectric signal emitting part of each pair of photoelectric sensors are respectively shielded or limited by a partition plate or a wall body arranged in the directional shielding chamber, and the photoelectric signal covering area of each pair of photoelectric sensors is in a column shape or a sheet shape;

the signal receiving directions of the photoelectric signal receiving parts of the opposite-type photoelectric sensors are respectively shielded or limited by the partition plates or the wall bodies arranged in the directional shielding chamber, so that the photoelectric signals of the opposite-type photoelectric sensors of different groups are prevented from being mutually dried.

Further, in the step of installing the automatic bag discharging box, the automatic bag discharging box comprises a frame with a hollow middle part to form the paper dust collecting port, and the frame is in a ring shape or a reverse shape, so that the width of the paper dust collecting port is not smaller than the width of the chip removing port, and the length of the paper dust collecting port is not smaller than the length of the chip removing port;

the paper scraps packing and collecting bag is a through bag with continuous bag bodies and only open ends;

the inner cavity of the frame is set into a storage bag inner cavity which is in a ring shape or a shape like a Chinese character 'Hui', the bag body of the paper scrap packing and collecting bag is folded in a Z shape and is stored in the storage bag inner cavity, and then the paper scrap packing and collecting bag which is continuous along the length direction of the bag body, is in a cylinder shape after being unfolded and is used for continuous output is stored in the storage bag inner cavity;

The paper scraps packing and collecting bag is outwards output through a bag outlet which is arranged on the inner side of the frame and surrounds the periphery of the frame, 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 chip discharging opening;

the method comprises the steps that a mounting position is arranged at the bottom of a paper shredder head or at the upper part of a barrel body, a frame is clamped in the mounting position at the upper part of the barrel body, 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 mounting position;

in the automatic bag placing step, the automatic bag feeding device selects any one of the following three mounting mechanisms or any two of the three mounting mechanisms to be used in combination,

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

the mechanical bag pressing mechanism drives and controls at least one bag pushing mechanism or heavy object which can extend into or fall into the barrel body to push downwards the paper dust packing and collecting bag with the lower part sealed by hot melting through the driving mechanism or the retracting mechanism, so that the paper dust packing and collecting bag is sent into the barrel body;

2) The automatic bag feeding device adopts a positive pressure bag blowing device arranged at the bottom of the paper shredder head or 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 blowing fan arranged above the automatic bag discharging box, so that the paper dust packaging and collecting bag sealed by the lower part in a hot melting mode is blown downwards into the barrel body;

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

the negative pressure bag sucking 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 the inner cavity of the barrel body below the automatic bag discharging box relatively forms negative pressure, and further, the lower part of the hot-melt sealed paper dust packaging and collecting bag is sucked into the barrel body downwards under the action of atmospheric pressure;

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

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

1) In the automatic bag placing process, the electric parameter detection units which are electrically connected to the electric induction plates or the dielectric plate groups are always kept to continuously detect the electric parameters of the electric induction plates or the dielectric plate groups, and the bag body parameter signals are transmitted to the continuous control unit;

2) In the automatic bag placing process, the electric parameter detection units which are electrically connected to the electric induction sheets or the dielectric sheet groups are always kept to continuously detect the electric parameters of the electric induction sheets or the dielectric sheet groups for a plurality of times at set time intervals, and the electric parameter detection units respectively transmit a bag body parameter signal to the control unit after each detection;

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

the electrical parameter detecting unit is made to detect at least three times continuously at intervals within a set time period and obtain a corresponding electrical parameter after each detection,

the comparison conversion unit electrically connected with the control unit is used for carrying out average calculation on a plurality of electrical parameters detected in the same time period and obtaining an electrical parameter average value,

the comparison and conversion unit converts the calculated average value of the electrical parameter to obtain a bag body parameter signal, and continuously transmits the bag body parameter signal to the control unit for a plurality of times at intervals through the comparison and conversion unit so as to realize detection to obtain an accurate electrical parameter and convert the accurate electrical parameter 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 parameter detection unit is used for detecting the electric parameter of each electric induction sheet or each dielectric sheet group, the low-voltage power supply unit electrically connected to the control unit is used for providing low-voltage direct-current voltage for each electric induction sheet or each dielectric sheet group, and the low-voltage power supply unit is electrically connected to each electric induction sheet or each dielectric sheet group or the low-voltage power supply unit is electrically connected to the set time of each electric induction sheet or each dielectric sheet group only 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 the paper shredder head through a control unit, and the working state of the automatic bag feeding device is controlled;

the indication forms of the bag falling state indication device comprise an indication form of sound alarm through a loudspeaker, a display form of digital percentage indication, a display form of progress bar indication, a display form of column height bar indication, a display form of sequential or step-by-step illumination indication through each LED lamp in the LED group, and a display form of symbol or analog graphic indication of the state of the bag falling into the barrel body through analog representation; the indication content of the graphic display unit comprises the automatic bag placing progress of the paper scrap packing and collecting bag, the bag falling height of the paper scrap packing and collecting bag or the bag body opening form of the paper scrap packing and collecting bag;

The indication content of the bag falling state indication device comprises the automatic bag placing progress of the paper scrap packing and collecting bag, the bag falling height of the paper scrap packing and collecting bag or the bag body opening form of the paper scrap packing and collecting bag.

Further, in the bag body detection step, the barrel body is arranged on the electric induction sheet, 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 change quantity, the voltage or the voltage change quantity of each electric induction sheet;

the electric induction sheet 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;

setting a specified position which is at least to be reached by the side surface or the bottom surface of the paper scrap packing and collecting bag as a nearest limit position in the automatic bag placing process, setting at least two nearest limit positions on the side surface of the barrel body and/or the inner bottom surface of the barrel body, and installing at least one electric induction piece at least at each nearest limit position;

at least before each detection, respectively providing a low-voltage direct-current voltage for the paper dust packing and collecting bag and/or each electric induction sheet through an electric parameter detection unit or a low-voltage power supply unit electrically connected with the control unit, and respectively enabling the paper dust packing and collecting bag and/or each electric induction sheet to bear set charges;

When the paper scrap packing collection bags contact the electric induction plates, the electric charge or voltage of the electric induction plates is changed, whether the paper scrap packing collection bags reach the corresponding designated nearest limit position is judged by detecting whether the electric charge or voltage of the electric induction plates is changed or not through an electric parameter detection unit, induction signals of the electric induction plates form a bag body parameter signal, and the bag body parameter signal is received through a control unit;

after the electrical 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 delay to disconnect the power supply or generate an electric control signal for controlling the working state of the automatic bag feeding device.

Further, at least when the control circuit is powered on, in the automatic bagging process or after the control circuit receives the electric control signal, a power-on execution signal is sent to the low-voltage power supply unit through the control unit, and at least one initialization power-on action is executed, in the initialization power-on action, the paper scrap packaging collection bag and/or each electric induction sheet are electrically conducted through the electrical parameter detection unit or the low-voltage power supply unit, and a low-voltage direct-current voltage is provided for the paper scrap packaging collection bag or each electric induction sheet;

After the voltage or the electric charge of the paper scrap packing collecting bag or each electric induction sheet reaches a set value, the low-voltage power supply unit electrically disconnects the paper scrap packing collecting bag and/or each electric induction sheet, and the electric parameter detection unit is always electrically connected with the paper scrap packing collecting bag and/or each electric induction sheet, and the electric parameter detection unit detects whether the electric charge/voltage or the electric charge/voltage of the paper scrap packing collecting bag or each electric induction sheet changes or not;

setting a designated area in the middle of the inner bottom surface of the barrel body as a minimum limit contact surface, setting the projection of the automatic bag discharging 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;

the boundary line on the front and rear sides of the minimum limit contact surface and the boundary line on the left and right sides of the minimum limit contact surface are set as the nearest limit positions,

the installation mode of the electric induction sheet is any one of the following six installation modes or any two of the six installation modes are used in combination,

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 plates are fixed in the minimum limit contact surface of the inner bottom surface of the barrel body at intervals, and each electric induction plate is 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 each electric induction sheet is arranged in a matrix or in a circumference;

5) At least one electric induction piece is fixed on the left side surface and the right side surface of the barrel body at intervals respectively, and each electric induction piece fixed on the left side surface and the right side surface of the barrel body extends from the corresponding side surface of the barrel body to the inner bottom surface of the barrel body respectively;

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

at least one capacitor is connected in series in each detection loop formed by respectively connecting the electric parameter detection unit and each electric induction sheet in series, a first electrode of the capacitor is electrically connected with the control unit or the low-voltage power supply unit, a second electrode of the capacitor is electrically connected with the corresponding electric induction sheet, and the electric induction sheets keep stable charges or voltages before being in contact with the paper scraps packaging collecting bag through the corresponding capacitors.

Further, in the bag body detection step, the dielectric sheet group is installed in the barrel body, in the bag body detection step, a capacitance dielectric parameter detection unit is selected as an electrical parameter detection unit, two dielectric sheets of the same dielectric sheet group are used as capacitance dielectric sheets in a circuit structure and are respectively and electrically connected with the capacitance dielectric parameter detection unit, and capacitance dielectric coefficients of the dielectric sheet groups are respectively detected through the capacitance dielectric parameter detection unit;

Calculating a capacitance medium coefficient by detecting at least one of the maximum charge amount, the maximum voltage parameter or the maximum current parameter or the minimum charging time which can be accommodated by the corresponding dielectric sheet groups;

each dielectric sheet group comprises two dielectric sheets facing oppositely, the two dielectric sheets of the same dielectric sheet group are respectively arranged at the left side, the right side, the upper side and the lower side of the barrel body and facing oppositely, and each dielectric sheet extends for a set length at least 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 conversion unit, and the control unit is respectively and electrically connected with the capacitance medium parameter detection unit, the comparison conversion unit and the automatic bag feeding device;

the capacitive medium parameters of each dielectric sheet group are continuously detected or detected at intervals for a plurality of times according to a set time interval by a capacitive medium parameter detection unit, and a capacitive medium parameter signal is continuously or intermittently transmitted to the control unit for a plurality of times;

receiving the capacitance medium parameter signals through a comparison conversion unit and transmitting a converted bag body parameter signal of the falling state of the reaction paper scrap packaging collecting bag to a control unit;

After the control unit receives the bag body parameter signal, the control unit sends the bag body parameter signal to a bag falling state indicating device arranged on the paper shredder head and/or simultaneously controls the working state of the automatic bag feeding device, when the bag body parameter signal is smaller than a set bag body parameter threshold value, the control unit controls the automatic bag feeding device to keep electrified to work, and when the bag body parameter signal is larger than the bag body parameter threshold value, the control unit controls the automatic bag feeding device to disconnect the power supply or delay to disconnect the power supply.

Further, the control circuit is provided with a low-voltage power supply unit electrically connected with the control unit, and a low-voltage direct-current voltage is respectively provided for each dielectric sheet group 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 powering on the automatic bag feeding device, receiving the detection signal by a capacitance medium parameter detection unit and respectively detecting capacitance medium coefficients of each dielectric sheet 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 detecting unit selects any one of the following four detecting modes or uses any two detecting modes in combination for detection,

1) The capacitive medium parameter detection units are always kept electrically connected to the dielectric sheet groups respectively, low-voltage direct-current voltage is provided for the dielectric sheet groups only through the capacitive medium parameter detection units, and meanwhile, the capacitive medium coefficients of the dielectric sheet groups are detected only through the capacitive medium parameter detection units;

2) Only after the capacitance medium parameter detection unit receives the detection signal, the capacitance medium parameter detection unit is kept electrically connected with each corresponding dielectric sheet group, and capacitance medium coefficients of each corresponding dielectric sheet group are detected through the capacitance medium parameter detection unit respectively; before the capacitive medium parameter detection unit receives the detection signal or after the capacitive medium parameter detection unit completes detection, the capacitive medium parameter detection unit is respectively connected with the power failure of each corresponding dielectric sheet group;

3) Before each dielectric sheet group is detected by the capacitance medium parameter detection unit or only in the detection process, each corresponding dielectric sheet group is electrically connected by the low-voltage power supply unit and is electrically disconnected by the time delay set, each dielectric sheet group is respectively provided with a low-voltage direct-current voltage by the low-voltage power supply unit, and after each corresponding dielectric sheet group is electrically connected by the low-voltage power supply unit and is time delay set, the capacitance medium coefficients of each dielectric sheet group are respectively detected by the capacitance medium parameter detection unit;

4) Connecting a capacitor in series and/or in parallel in a capacitor medium coefficient detection loop formed by connecting the capacitor medium parameter detection unit and each dielectric sheet 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 sheet group, and detecting the capacitor medium coefficient of each dielectric sheet 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 any one or the combination of any two of the following three mounting structures,

1) Only one dielectric sheet group is arranged in the barrel body, two dielectric sheets of the dielectric sheet group are respectively fixed on the left side and the right side of the barrel body, the upper end and the lower end of the dielectric sheet in 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 of the adjacent barrel body, and the front end and the rear end of the dielectric sheet in 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 of the adjacent barrel body.

2) At least two groups of dielectric sheet groups are arranged in 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, 1-5 groups of dielectric sheet groups are arranged at intervals along the side surface of the barrel body in the height direction, and 1-5 groups of dielectric sheet groups are arranged at intervals along the side surface of the barrel body in the longitudinal direction;

3) At least one dielectric sheet group is 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 part of each dielectric sheet respectively extends from the corresponding side surface of the barrel body to the inner bottom surface of the barrel body.

Further, a storage unit electrically connected with the control unit is arranged in the control circuit, a relation conversion table obtained by pre-testing and a bag parameter threshold value corresponding to the automatic bag feeding device for controlling the disconnection of a 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 position and/or the form of the paper scrap packing and collecting bag and capacitance medium parameters respectively corresponding to the bag body parameters one by one,

the bag body parameters comprise at least one of a bag body parameter value, a bag body parameter interval value or a position code representing the falling height, the falling length, the arrival interval or the bag body shape of the paper dust packing and collecting bag,

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,

and 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 parameters is obtained, and the control unit receives the bag body parameter signal.

The automatic paper scrap packing paper shredder is used for realizing the automatic paper scrap packing method of the paper shredder, and comprises a control circuit, a paper shredder head and a barrel body, wherein the paper shredder head is arranged on the upper part of the barrel body, a paper inlet is formed in the upper part of the paper shredder head, a chip removal port is formed in the lower part of the paper shredder head, a paper shredder core is arranged in an inner cavity of the paper shredder head, a motor, a transmission mechanism and a paper shredding knife rod are arranged on the paper shredder core, the motor is connected with the transmission mechanism in a transmission manner, the transmission mechanism is connected with the paper shredding knife rod in a transmission manner, the paper inlet is positioned above the paper shredding knife rod, and the chip removal port is positioned below the paper shredding knife rod, and the automatic paper scrap packing paper shredder is characterized in that: the control circuit is provided with a control unit and an electrical parameter detection unit,

the paper scrap collecting opening which penetrates through the automatic paper scrap collecting box from top to bottom and is used for collecting paper scraps is formed in the middle of the automatic paper scrap collecting box, and the paper scrap collecting opening is positioned below the chip discharging opening;

The paper shredder head and/or the barrel body 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, 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, and the automatic bag feeding device is used for packaging and collecting paper scraps in an automatic bag discharging box into the barrel body;

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

at least one electric induction sheet or a dielectric sheet group electrically connected with an 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 alternately detects the electric induction sheet or the dielectric sheet group for a plurality of times in the automatic bagging process and respectively obtains an electric parameter, and the electric parameter detection unit continuously or alternately conveys a bag body parameter signal at least comprising a bag falling state and/or a bag body shape representing a paper dust packing and collecting bag to the control unit for a plurality of times according to the received electric parameter in the automatic bagging process;

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 body parameter signal, and is used for controlling the automatic bag feeding device to stop working immediately or to stop working in a delayed mode.

Further, the automatic bag discharging box comprises a frame with a hollow middle part to form the paper dust collecting port, the frame is in a ring shape or a shape like a Chinese character 'hui', the width of the paper dust collecting port is not smaller than the width of the chip removing port, and the length of the paper dust collecting port is not smaller than the length of the chip removing port;

the inner cavity of the frame is provided with a storage bag inner cavity which is in a ring shape or a shape like a Chinese character 'Hui', the paper scraps packing and collecting bag is a through bag with continuous bag bodies and only open end parts, the paper scraps packing and collecting bag which is continuous along the length direction of the bag bodies and is in a cylinder shape after being unfolded is stored in the storage bag inner cavity for continuous output, and the bag bodies of the paper scraps packing and collecting bag are folded in a Z shape and are stored in the storage bag inner cavity;

the inner side, the bottom surface or the outer side of the frame is provided with a bag outlet which surrounds the frame and is used for outputting paper scraps packing and collecting bags outwards, and the upper opening of the paper scraps packing and collecting bag which extends out of the automatic bag outlet box forms a paper falling opening which is larger than the chip discharging opening;

the bottom of the paper shredder head or the upper part of the barrel body is provided with a mounting position, the frame is clamped in the mounting 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 connecting surface of the mounting position;

The automatic bag feeding device is selected from 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 in the paper shredder head or at the bottom, 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 falls into the barrel body by self weight so as to realize that the lower part of the paper dust hot-melt sealed packing and collecting bag is fed into the barrel body;

2) The automatic bag feeding device is a positive pressure bag blowing device arranged at the bottom of the paper shredder head or 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 or is communicated with the paper dust collecting port;

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

The electrical parameter detection unit selects any one of the following four detection modes or any two of the four detection modes,

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

3) The control unit generates a detection signal which is transmitted to the electric parameter detection unit at set time intervals continuously, the electric parameter detection unit continuously detects the electric parameter detection unit at least three times in a set time period after receiving the corresponding detection signal each time and respectively obtains a corresponding electric parameter after each detection, the control circuit is electrically connected with the comparison conversion unit of the control unit, the comparison conversion unit is used for carrying out average calculation on a plurality of electric parameters detected in the same time period and obtaining an electric parameter average value, the comparison conversion unit is used for carrying out conversion on the calculated electric parameter average value and obtaining a bag body parameter signal, and the comparison 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 and obtain an accurate electric parameter and conversion and 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 parameter detection unit only detects the electric parameters of each electric induction sheet or each dielectric sheet group, the control circuit is provided with a low-voltage power supply unit electrically connected to the control unit, and the paper scrap packing collection bag and/or the electric induction sheet are electrically connected to the electric parameter detection unit, or the paper scrap packing collection bag and/or the electric induction sheet are respectively electrically connected to the electric parameter detection unit and the low-voltage power supply unit;

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

each dielectric sheet group comprises two dielectric sheets facing oppositely, and the two dielectric sheets of the same dielectric 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 body 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 is used for indicating or simulating the bag falling state or the bag body form of the paper dust packing and collecting bag conveyed into the barrel body by using a loudspeaker sound alarm, an indicating lamp, an LED indicating lamp group with multi-stage indication and an indicating symbol or a graphic display unit with a graphic display area;

The indication content of the bag falling state indication device comprises the automatic bag placing progress of the paper scrap packing and collecting bag, the bag falling height of the paper scrap packing and collecting bag or the bag body opening form of the paper scrap packing and collecting bag;

setting a specified position which is at least to be reached by the side surface or the bottom surface of the paper scraps packing and collecting bag as a nearest limit position in the automatic bag placing process, setting at least one nearest limit position on the side surface of the barrel body and/or the inner bottom surface of the barrel body, and installing at least one electric induction sheet or dielectric sheet group at least at each nearest limit position;

the appointed area in the middle of the inner bottom surface of the barrel body is set as a minimum limit contact surface, the projection of the automatic bag discharging 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 detecting unit sends an electrical control signal to the control unit when either of the following two conditions occur,

1) When the paper scrap packing 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 packing collecting bag and the electric induction sheet, the electric parameter detection unit sends an electric control signal to the control unit, and after the control unit receives the electric control signal, the control unit sends a stop control signal or a power-off control signal to the automatic bag feeding device;

2) When the paper scraps packing and collecting bag enters the 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 after the capacitance medium coefficient of the dielectric sheet group positioned at a specified position or at the nearest limit position changes, the electrical parameter detecting unit sends an electric control signal to the control unit, and after the control unit receives the electric control signal, the control unit sends a stop control signal or a power-off control signal to the automatic bagging device.

Further, at least one electric induction sheet is arranged in the barrel body, each electric induction sheet electrically connected with the electric parameter detection unit respectively forms a detection loop, the installation structure of the electric induction sheet is any one or any two of the following six installation structures are selected and used 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 sheet groups are arranged in the barrel body, each dielectric sheet group electrically connected with the electrical parameter detection unit respectively forms a detection loop, the mounting mode of the dielectric sheet group is selected from any one or any two of the following three mounting structures,

3) At least one dielectric sheet group is 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 part of each dielectric sheet respectively extends from the corresponding side surface of the barrel body to the inner bottom surface of the barrel body;

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

Compared with the prior art, the invention has the advantages that: the automatic bag discharging box for storing the paper scrap packing and collecting bags is arranged at the upper end part of the barrel body, the paper scrap packing and collecting bags are automatically conveyed through the automatic bag conveying device, the paper scrap packing and collecting bags are sealed and fused through the bag body sealing and fusing device, whether the paper scrap packing and collecting bags are 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 the crushed paper scraps falling from the scrap discharge port into the paper scraps packing and collecting bag, avoids flying around the crushed paper scraps, automatically seals and packs the crushed paper scraps, avoids the pollution of paper scraps to a paper shredder and various electronic components including a detector, an inductor or an inductive switch, and keeps the barrel clean, thereby saving energy and protecting environment.

Drawings

The invention will be further described with reference to the drawings and examples.

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

Fig. 2 is a schematic structural view of the present invention, in which dielectric sheets are respectively fixed on the left and right sides of a tub body in opposite directions to form a dielectric sheet set.

Fig. 3 is a schematic structural view of the present invention, in which three dielectric sheets facing each other are fixed side by side on the left and right sides of a tub to form three dielectric sheet sets, respectively.

Fig. 4 is a schematic structural view of a dielectric sheet extending from a side surface of a tub to an inner bottom surface of the tub.

Fig. 5 is a schematic structural view of an air pressure bag laying device installed at the bottom of a barrel body.

Fig. 6 is a schematic view of the structure of the automatic bag discharging box of the present invention.

Fig. 7 is a schematic diagram showing the structure of a graphic display unit installed on the top surface of the shredder head to simulate the state of falling the shredded paper packing collection bag.

Fig. 8 is a schematic structural view showing a state where the bottom of the paper dust packing and collecting bag is connected to the inner bottom surface of the tub body by the bag falling state indicating device.

Fig. 9 is a schematic view of a structure in which one electric induction piece is respectively installed at the left and right sides of the inner bottom surface of the tub bottom.

Fig. 10 is a schematic view of a structure in which one induction piece is respectively installed at the front and rear sides of the inner bottom surface of the tub bottom.

Fig. 11 is a schematic view of a structure in which one induction piece is respectively installed at the left and right sides of the inner bottom surface of the tub bottom and at the left and right sides thereof.

Fig. 12 is a schematic view of a structure in which a plurality of inductive pieces are installed at intervals in the longitudinal and transverse directions on the inner bottom surface of the tub bottom.

Fig. 13 is a schematic view showing a structure in which a plurality of electric induction pieces are arranged in a matrix at intervals on the inner bottom surface of the tub bottom.

The marks in the figure:

1. the paper shredder head 11, the chip removal port 12, the paper inlet 13, the paper scrap packing and collecting bag 14, the air extraction port 15 and the bag falling state indicating device.

2. Barrel 20, door plant 21, observation window.

3. The automatic bag discharging box 31, the paper scraps collecting port 32, the bag discharging port 33, the inner cavity 34 of the storage bag and the cover body.

5. Automatic bag feeding device.

6. A dielectric sheet.

7. An electric induction sheet.

8. Correlation type photoelectric sensor.

Detailed Description

The following are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention.

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

the step of installing the automatic bag discharging box 3, namely clamping the automatic bag discharging box 3 storing the paper scraps packing and collecting bag 13 on the upper part of the barrel body 2 or the bottom of the paper shredder head 1, and outwards pulling out the paper scraps packing and collecting bag 13 in the automatic bag discharging box 3 through a bag discharging opening 32 arranged around the automatic bag discharging box 3 and downwards passing through a paper scraps collecting opening 31 formed in the middle of the automatic bag discharging box 3, wherein a paper falling opening positioned below a chip discharging opening 11 of a paper shredder is formed in the upper part of the paper scraps packing and collecting bag 13 output by the paper scraps packing and collecting bag 13 in the automatic bag discharging box 3.

Specifically, the automatic bag discharging box 3 comprises a frame with a hollow middle part to form a paper scrap collecting port 31, wherein the frame is in a ring shape or a reverse shape, so that the width of the paper scrap collecting port 31 is not smaller than the width of the chip removing port 11, and the length of the paper scrap collecting port 31 is not smaller than the length of the chip removing port 11; the paper scraps packing and collecting bag 13 is a through bag with continuous bag bodies and only open end parts; the inner cavity of the frame is provided with a storage bag inner cavity 33 which is in a ring shape or a shape like a Chinese character 'hui', the bag body of the paper dust packing and collecting bag 13 is folded and stored in the storage bag inner cavity 33 in a Z shape, and further the paper dust packing and collecting bag 13 which is continuous along the length direction of the bag body, 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 scraps packing and collecting bag 13 is output outwards through a bag outlet 32 which is arranged on the inner side of the frame and surrounds the periphery of the frame, 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 scraps discharging port 11; the method comprises the steps that a mounting position is arranged at the bottom of a paper shredder head 1 or the upper part of a barrel body 2, a frame is clamped in the mounting position at the upper part of the barrel body 2, 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 mounting position; by automatically and continuously discharging the paper dust packing and collecting bag 13 from the bag discharging box 3, the user does not need to manually put the bag in each time or put the bag in 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 capable of being detached and re-installed into the paper scrap packing and collecting bag 13, or the automatic bag discharging box 3 is a disposable component pre-stored with the paper scrap packing and collecting bag 13, and after the paper scrap packing and collecting bag 13 in the automatic bag discharging box 3 is used up, a new automatic bag discharging box 3 can be replaced.

And a hot-melt sealing fusing step, namely, the bag body sealing fusing device arranged below the automatic bag discharging box 3 is used for hot-melt sealing the bag body of the paper dust packing and collecting bag 13 which extends below the automatic bag discharging box 3, so that the paper dust packing and collecting bag 13 forms a first hot-melt sealing part and seals the lower part of the first hot-melt sealing part. Preferably, a bag body sealing fusing device is arranged below the automatic bag discharging box 3, the bag body sealing fusing device comprises a base body, a folding mechanism and a hot melting mechanism, the folding mechanism is arranged on the base body and used for folding or compacting the paper scraps packing and collecting bag 13, the hot melting mechanism is arranged on the base body and used for hot melting and sealing the bag body of the paper scraps packing and collecting bag 13 to form a hot melting sealing part, the fusing mechanism can be arranged on the hot melting mechanism or a cutting mechanism is arranged on the base body and used for cutting off the middle part of the hot melting sealing part through the fusing mechanism or the cutting mechanism, so that the upper part of the cut paper scraps packing and collecting bag 13 which is used for collecting paper scraps is provided with the hot melting sealing part, and meanwhile, the lower part of the cut paper scraps packing and collecting bag 13 which is reserved below the automatic bag discharging box 3 is provided with the hot melting sealing part.

An automatic bag placing step, namely conveying an automatic bag conveying signal to the automatic bag conveying device 5 through a control key of an electric connection control unit arranged on the paper shredder head 1 or electrically conducting the automatic bag conveying device 5, and starting the automatic bag conveying device 5 and enabling the automatic bag conveying device 5 to work in an electrified mode; the paper dust packing and collecting bag 13 is downwardly transferred into the tub 2 by an automatic bag feeding device 5 installed at the shredder head 1 or at the lower portion of the tub 2.

In a specific embodiment, the automatic bag feeding device 5 selects any one of the following three mounting mechanisms or any two of the three mounting mechanisms to be used in combination so as to realize full-automatic bag feeding.

1) The automatic bag feeding device 5 selects a mechanical bag pressing mechanism arranged in the paper shredder head 1 or at the bottom, and the mechanical bag pressing mechanism drives and controls at least one bag pushing mechanism or heavy object which can extend into or fall into the barrel body 2 through a driving mechanism or a retracting mechanism to push downwards the paper scrap packing and collecting bag 13 which is sealed by hot melting at the lower part, so that the paper scrap packing and collecting bag 13 is fed into the barrel body 2.

2) The automatic bag feeding device 5 is a positive pressure bag blowing device arranged at the bottom of the paper shredder head 1 or at the upper part of the barrel body 2, and the positive pressure bag blowing device blows air towards the automatic bag discharging box 3 through at least one blowing fan arranged above the automatic bag discharging box 3 so as to further blow the paper scrap packaging and collecting bag 13 which is sealed by the lower part in a hot melting way downwards into the barrel body 2;

In which, for blowing the paper dust packing and collecting bag 13 downward using the blowing fan, there is no need for a sealing design at the tub 2, and thus, a bracket structure or the like may be designed at the tub 2, for example, various brackets, frames, tables, or the like may be used instead of the tub 2.

3) The automatic bag feeding device 5 is a negative pressure bag sucking device arranged at the lower part or the bottom of the barrel body 2, and the negative pressure bag sucking device sucks air from the barrel body 2 which is sealed relatively through at least one air suction fan arranged at the lower part of the barrel body 2, so that the inner cavity of the barrel body 2 below the automatic bag discharging box 3 forms negative pressure relatively, and further, the paper dust packaging and collecting bag 13 which is sealed by the lower part in a hot melting mode is sucked into the barrel body 2 downwards under the action of atmospheric pressure.

And in the bag body detection step, 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 electrical parameter detection unit detects the electrical parameter of the electric induction sheet 7 or the dielectric sheet group, and continuously detects or alternately detects the electrical parameter of the electric induction sheet 7 or the dielectric sheet group for a plurality of times in the process of executing the automatic bagging step, and continuously or alternately conveys a bag body parameter signal at least comprising a bag falling state and a bag body shape representing the paper dust packing and collecting bag 13 to a control unit in the control circuit for a plurality of times in the process of executing the automatic bagging step.

In a specific embodiment, the electrical parameter detecting unit selects any one of the following four detecting modes or any two of the following four detecting modes,

1) In the automatic bag placing process, the electric parameters of each electric induction sheet 7 or each dielectric sheet group are continuously detected through the electric parameter detection unit which is always electrically connected with each electric induction sheet 7 or each dielectric sheet group, and bag body parameter signals are transmitted to the continuous control unit;

2) In the automatic bag placing process, the electric parameter detection units which are electrically connected to the electric induction plates 7 or the dielectric plate groups are always kept to continuously detect the electric parameters of the electric induction plates 7 or the dielectric plate groups for a plurality of times at set time intervals, and the electric parameter detection units respectively transmit a bag body parameter signal to the control unit after each detection;

3) In the automatic bag placing process, a detection signal transmitted to the electric parameter detection unit is generated by the control unit at set time intervals continuously, the electric parameter detection unit respectively detects the electric parameters of each electric induction sheet 7 or each dielectric sheet group after the electric parameter detection unit receives the detection signal every time,

4) The electric parameter detection unit is always electrically connected to each electric induction sheet 7 or each dielectric sheet group, the electric parameter detection unit is used for detecting the electric parameter of each electric induction sheet 7 or each dielectric sheet group, the 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 or the low-voltage power supply unit is electrically connected to the set time of each electric induction sheet 7 or each dielectric sheet group only before each detection.

The specified position of the tub 2 to which at least the side or bottom of the chip-packing collecting bag 13 is to be reached is set as the nearest limit position, and the position that the chip-packing collecting bag 13 must reach when the chip-packing collecting bag 13 is conveyed to the tub 2 is determined by the specified nearest limit position, which also determines whether the state of opening of the chip-packing collecting bag 13 conveyed into the tub 2 is in place, whether the bottom of the chip-packing collecting bag 13 is in place, the position of the chip-packing collecting bag 13 is detected during the conveyance of the chip-packing collecting bag 13, and the conveyance of the chip-packing collecting bag 13 is stopped at least after the chip-packing collecting bag 13 reaches the specified position.

In the preferred embodiment, a bag body parameter signal is sent to a bag falling state indicating device 15 arranged on the paper 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 reached by the bottom of the paper scrap packing and collecting bag 13 and position information reached by the extending bag edge of the paper scrap packing and collecting bag 13; the bag falling state or the bag body form of the paper dust packing and collecting bag 13 conveyed into the barrel body 2 is indicated or simulated by the bag falling state indicating device 15;

the indication forms of the bag falling state indication means 15 include 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 sequential lighting indication or stepwise lighting indication through each LED lamp in the LED group, a display form of symbol or analog graphic indication showing the state of the bag falling into the tub 2 through analog; the indication content of the graphic display unit comprises the automatic bag placing progress of the paper scrap packing and collecting bag 13, the bag falling height of the paper scrap packing and collecting bag 13 or the bag body opening form of the paper scrap packing and collecting bag 13; the indication content of the bag falling state indication device 15 comprises the automatic bag placing progress of the paper dust packing and collecting bag 13, the bag falling height of the paper dust packing and collecting bag 13 or the bag body opening state of the paper dust packing and collecting bag 13, so that the conveying condition of the paper dust packing and collecting bag 13 can be indicated or displayed more vividly and more directly.

Stopping the bag placing step, receiving the bag body parameter signals 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 on working and continuously conveys the paper scrap packaging and collecting bag 13 downwards into the barrel body 2,

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 5 to disconnect the power supply, and of course, the automatic bag feeding device 5 can be controlled to disconnect the power supply in a delayed manner; the condition that the descending position or the opening degree of the paper scrap packing and collecting bag 13 is not in place is avoided.

A paper shredding step, namely throwing paper into a paper inlet 12 at the upper part of the paper shredder head 1, shredding the paper by a paper shredding knife bar arranged in the paper shredder head 1, and enabling paper scraps formed after the paper shredding knife bar is crushed to drop downwards into a paper scraps collecting opening 31 of the automatic bag discharging box 3 through a chip discharging opening 11 arranged below the paper shredding knife bar, and enabling all the paper scraps to drop downwards into a paper scraps packing collecting bag 13 through a paper falling opening, and collecting the paper scraps through the paper scraps packing collecting bag 13 with a lower seal and an upper opening;

And a sealing bag cutting step, namely, the upper bag body of the paper dust packing and collecting bag 13 extending below the automatic bag discharging box 3 is sealed in a hot melt mode through a bag body sealing fusing device, a second hot melt sealing part is formed, and the second hot melt sealing part is cut off or a bag body above the second hot melt sealing part is cut off through a cutting mechanism or a fusing mechanism. The steps are circulated after the automatic discharging bag box 3 is installed and used normally, the hot-melt sealing and fusing step is manually or automatically performed after the paper scrap packing and collecting bag 13 is filled with paper scraps, the upper bag body of the paper scrap packing and collecting bag 13 is hot-melt sealed and cut off, the automatic bag discharging step, the bag body detecting step and the bag discharging stopping step are manually or automatically sequentially performed after the paper scrap packing and collecting bag 13 filled with paper scraps is taken out from the barrel body 2, new paper scrap packing and collecting bags 13 are automatically fed into the barrel body 2, the paper scraps are automatically collected in the paper shredding process, and the hot-melt sealing and fusing step is manually or automatically performed again after the paper scrap packing and collecting bags 13 are filled with paper scraps again, so that the circulation is performed.

In the preferred embodiment, the bag body position and/or the bag body shape of the paper dust packing and collecting bag 13 are detected and judged in an auxiliary way through a plurality of groups of opposite-incidence photoelectric sensors 8 arranged at different height positions on the side surface of the barrel body 2; the two modes can be independently implemented or combined to be implemented through the auxiliary detection and judgment of the bag body position and the bag body shape of the paper dust packing and collecting bag 13 by the aid of the multiple groups of correlation type photoelectric sensors 8 arranged at different positions of the inner bottom surface of the barrel body 2.

The photoelectric sensing signals of the correlation photoelectric sensors 8 are received by the control unit, and after the control unit receives the photoelectric sensing signals, the control unit sends a bag body parameter signal to the 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 reached by the bottom of the paper scrap packing and collecting bag 13 and position information reached by the extending bag edge of the paper scrap packing and collecting bag 13; the bag falling state or the bag body form of the paper dust packing and collecting bag 13 conveyed into the barrel body 2 is indicated or simulated by the bag falling state indicating device 15;

the correlation photoelectric sensors 8 arranged in a combined way are utilized to detect the falling state or the bag body shape of the paper scraps packing and collecting bag 13 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 combined or three of the three photoelectric sensing detection modes are combined,

1) Sensing the position reached by the bottom of the paper dust packing 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 emitting part and the photoelectric signal receiving part of each group of opposite-type photoelectric sensors 8 in a corresponding directional shielding chamber on the side surface of the barrel body 2;

2) The position where the bag edge of the paper dust packing and collecting bag 13 extends is sensed by a plurality of groups of opposite-type photoelectric sensors 8 which are arranged at the front and back intervals of the same height position of the side face of the barrel body 2, a plurality of groups of opposite-type photoelectric sensors 8 are arranged at the front and back intervals of the same height position of the side face of the barrel body 2, and photoelectric signal emitting parts and photoelectric signal receiving parts of the groups of opposite-type photoelectric sensors 8 are respectively arranged in corresponding directional shielding chambers of the side face of the barrel body 2;

3) Sensing the position reached by the extension of the bag edge of the paper dust packing and collecting bag 13 by a plurality of groups of opposite-type photoelectric sensors 8 arranged at intervals in front and back of a plurality of same height positions on the inner bottom surface of the barrel body 2, arranging a plurality of groups of opposite-type photoelectric sensors 8 at intervals on the plurality of positions on the inner bottom surface of the barrel body 2, and respectively arranging photoelectric signal emitting parts and photoelectric signal receiving parts of the groups of opposite-type 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 is selected from a column hole which is transversely arranged or a flat groove which is horizontally arranged; the directional shielding chamber positioned on the inner bottom surface of the barrel body 2 is selected from a column hole or a flat groove which are vertically arranged; 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-type photoelectric sensor 8 arranged in the directional shielding chamber, or the photoelectric signal transmitting part and the photoelectric signal receiving part of each opposite-type photoelectric sensor 8 are respectively retracted in the directional shielding chamber; the photoelectric signal emitting direction and the photoelectric signal covering shape of the photoelectric signal emitting part of each pair of photoelectric sensors 8 are respectively shielded or limited by a partition plate or a wall body arranged in the directional shielding chamber, and the photoelectric signal covering area of each pair of photoelectric sensors 8 is in a column shape or a sheet shape; the signal receiving directions of the photoelectric signal receiving parts of the opposite-type photoelectric sensors 8 are respectively shielded or limited by the partition plates or the wall bodies arranged in the directional shielding chamber, so that the photoelectric signal coverage areas of the opposite-type photoelectric sensors 8 are in beam shapes or sheet shapes which are not intersected or overlapped with each other, and the situation that the photoelectric signals of the opposite-type photoelectric sensors 8 of different groups are mutually dried is avoided.

The electric induction sheet 7 can be installed in the barrel body 2 on the basis of installing the correlation photoelectric sensor 8 in the barrel body 2, and of course, the electric induction sheet 7 can be installed in the barrel body 2 only, 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 packing and collecting bag 13.

In a specific embodiment, in the bag body detection step, the barrel body 2 is mounted on the electric induction sheet 7, the electric parameter detection unit is selected from 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 induction sheet 7;

the appointed position which is at least reached by the side surface or the bottom surface of the paper scraps packing and collecting bag 13 in the automatic bag placing process is set as the 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 arranged at least at each nearest limit position;

at least before each detection, the low-voltage power supply unit electrically connected with the control unit or the electrical parameter detection unit respectively provides a low-voltage direct-current voltage for the paper dust packing and collecting bag 13 or each electric induction sheet 7, and the paper dust packing and collecting bag 13 or each electric induction sheet 7 respectively bears set charges;

When the paper dust packing and collecting bag 13 contacts the electric induction sheet 7, the electric induction sheet 7 changes in electric charge or voltage, whether the paper dust packing and collecting bag 13 reaches the corresponding designated nearest limit position is judged by detecting whether the electric induction sheet 7 changes in electric charge or voltage through the electric parameter detection unit, the induction signals of the electric induction sheets 7 form a bag body parameter signal, and the bag body parameter signal is received through the control unit; after the electrical parameters of the electric induction 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 delay to disconnect the power supply or generate 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 started up, during automatic bagging or after the control circuit receives an electric control signal, a power-on execution signal is sent to the low-voltage power supply unit through the control unit, and at least one initialization power-on action is executed, in the initialization power-on action, the paper scrap packaging collection bag 13 or each electric induction sheet 7 is electrically conducted through the electric parameter detection unit or the low-voltage power supply unit, and a low-voltage direct-current voltage is provided for the paper scrap packaging collection bag 13 or each electric induction sheet 7; after the voltage or the electric charge of the paper scrap packing and collecting bag 13 or each electric induction piece 7 reaches a set value, the low-voltage power supply unit electrically disconnects the paper scrap packing and collecting bag 13 or each electric induction piece 7, and the electric parameter detection unit is always electrically connected with the paper scrap packing and collecting bag 13 or each electric induction piece 7, and the electric parameter detection unit detects the electric charge or the voltage of the paper scrap packing and collecting bag 13 or each electric induction piece 7 or detects whether the electric charge or the voltage of the paper scrap packing and collecting bag 13 or each electric induction piece 7 changes or not, so that the position of the paper scrap packing and collecting bag 13 and the bag body shape of the paper scrap packing and collecting bag 13 fed 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 discharging 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 on the front side and the rear side of the minimum limit contact surface and the boundary lines on the left side and the right side of the minimum limit contact surface are respectively set to be the nearest limit positions, and the automatic detection and automatic bag feeding are ensured by the setting of the nearest limit positions, and whether the paper scrap packing and collecting bag 13 descends in place or not and is unfolded in place is ensured.

In the preferred embodiment, the mounting mode of the electric induction sheet 7 is any one of the following six mounting modes or any two of the following six mounting modes are used in combination,

1) At least one electric induction sheet 7 is fixed between the nearest limiting position of the front and rear sides of the inner bottom surface of the tub 2 and the corresponding side surface of the tub 2 at intervals, for example, a transversely extending electric induction sheet 7 is fixed at the corresponding nearest limiting position on the front and rear sides of the inner bottom surface of the tub 2, and as shown in fig. 10, the distance between the electric induction sheets 7 on the front and rear sides, that is, the width of the limited paper dust packing and collecting bag 13 which is least extended on the bottom surface of the tub 2.

2) At least one electric induction piece 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 plates 7 are fixed in the minimum limit contact surface of the inner bottom surface of the barrel body 2 at intervals, and each electric induction plate 7 is arranged in a matrix or in a circumference;

for example, an electric induction sheet 7 is simultaneously fixed to both left and right sides and front and rear sides of the inner bottom surface of the tub 2, respectively, to simultaneously define the length and width of the paper dust packing and collecting bag 13 to be least extended at the bottom surface of the tub 2, as shown in fig. 11.

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

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

6) A plurality of electric induction plates 7 are distributed on the inner bottom surface of the barrel body 2 at intervals, and the electric induction plates 7 are arranged in a matrix or in a circumference.

For example, a plurality of electric sensing pieces 7 are fixed at intervals between the nearest extreme 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 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 induction sheet 7 is fixed only at the corresponding nearest limit position on the left and right sides of the inner bottom surface of the tub 2, and as shown in fig. 9, the distance between the electric induction sheets 7 on the left and right sides, that is, the length of the limited paper dust packing collection bag 13 which is least extended on the bottom surface of the tub 2, preferably, the two electric induction sheets 7 are adjacent to the side plates on the left and right sides of the tub 2, respectively.

For example, a plurality of transversely spaced apart induction plates 7 and a plurality of longitudinally spaced apart induction plates 7 are fixed to the inner bottom surface of the tub 2, as shown in fig. 11 to 13.

At least one capacitor is connected in series in each detection loop formed by respectively connecting the electric parameter detection unit and each electric induction sheet 7 in series, a first electrode of the capacitor is electrically connected with the control unit or the low-voltage power supply unit, a second electrode of the capacitor is electrically connected with the corresponding electric induction sheet 7, and the electric induction sheets 7 can keep stable charges or voltages before being in contact with the paper dust packaging collection bag 13 through the corresponding capacitor.

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

The designated area in the middle of the inner bottom surface of the tub 2 is set as a minimum limit contact surface, which is not less than half of the inner bottom surface of the tub 2, preferably, the minimum limit contact surface is greater than 2/3 of the inner bottom surface of the tub 2, ensuring that the paper dust packing and collecting bag 13 falls in place. The projection of the automatic bag discharging box 3 on the inner bottom surface of the barrel body 2 is set to be a projection surface, a minimum limit contact surface is shown by a dotted line frame, the minimum limit contact surface is larger than the projection surface, and a boundary line on the front side and the rear side of the minimum limit contact surface and a boundary line on the left side and the right side of the minimum limit contact surface respectively form a nearest limit position.

At least one electric induction sheet 7 is fixed between the nearest limit position on the front and rear sides and the corresponding side surface of the tub 2 or between the nearest limit position on the left and right sides and the corresponding side surface of the tub 2, or at least one electric induction sheet 7 is fixed between the nearest limit position on the front and rear sides and the corresponding side surface of the tub 2 and between the nearest limit position on the left and right sides and the corresponding side surface of the tub 2, respectively, 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 acting on the air-pressure bag laying device.

In a preferred embodiment, a plurality of sensors including an opposite-type photoelectric sensor 8 and an electric sensor 7 are mounted on a side plate of the tub 2 to sense a falling height of the paper dust packing and collecting bag 13, broken lines in fig. 6 respectively indicate the paper dust packing and collecting bags 13 falling to different positions, and broken lines in fig. 7 respectively indicate a corresponding contact surface and a corresponding size of the bottom of the paper dust packing and collecting bag 13 and the tub 2. A plurality of electric induction pieces 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 pieces 7 are fixed on the inner bottom surface of the barrel body 2 at intervals along the transverse direction and the longitudinal direction respectively, each electric induction piece 7 can be in a point shape, a block shape or a strip shape, each electric induction piece 7 is 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 pieces 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 dust packing collection bag 13; after each of the electric sensing pieces 7 located within the nearest limit position on the left side, the right side and/or the front side and the rear side contacts the paper dust packing and collecting bag 13, the electric signal detection units respectively send a corresponding position signal to the control unit, and the bag falling state indicating device 15 receives the position signal to the control unit and displays a corresponding indication graph or symbol for displaying the real-time position or state of the paper dust packing and collecting bag 13 in real time. Of course, the indication may also be by a speaker alarm.

The upper portion of staving 2 is fixed with a voltage and adds the pole of holding, and the outer end that the voltage added the pole of holding extends to in the paper bits collection mouth 31, and the voltage adds the pole of holding electricity and is connected in the control unit, and in bagging process paper bits packing collection bag 13 moves down to staving 2, in this process through the voltage with the pole of holding to the weak voltage of paper bits packing collection bag 13 loading, makes paper bits packing collection bag 13 bear the electric charge.

Along with the process that the air pressure bag paving device gradually unreels the paper dust packing and collecting bag 13 to the barrel body 2, the paper dust packing and collecting bag 13 and the automatic bag discharging box 3 are rubbed relatively, so that the paper dust packing and collecting bag 13 is charged with a certain amount of electric charges, when the paper dust packing and collecting bag 13 covers a bag falling area, the paper dust packing and collecting bag 13 is matched with the electric induction sheet 7 in an electrostatic induction manner, so that the electric charge or voltage of the electric induction sheet 7 is increased, or the electric charge or voltage of the electric induction sheet 7 is reduced, and preferably, the paper dust packing and collecting bag 13 or the electric induction sheet 7 is loaded with 3-12V voltage.

The control circuit is provided with an electric loading unit, and the control unit is electrically connected with the electric loading unit, and the electric loading unit is electrically connected with the electric induction sheet 7, and voltage or electric charge is provided for the electric induction sheet 7 through the electric loading unit. Of course, the electric loading unit may be electrically connected to the paper dust packing and collecting bag 13, or the electric loading unit may be electrically connected to both the paper dust packing and collecting bag 13 and the electric induction sheet 7. When the paper dust packing collecting bag 13 contacts the corresponding electric induction sheet 7, electric charge transfer or voltage change is generated between the paper dust packing collecting bag 13 and the electric induction sheet 7, the electric signal detecting unit detects the electric charge change or voltage change of the electric induction sheet 7, and after the electric charge change or voltage change of the electric induction sheet 7, the electric signal detecting unit sends an electric control signal to the control unit, which indicates that the paper dust packing collecting bag 13 is paved in place, after the control unit receives the electric control signal, a stop control signal or a power-off control signal is sent to the air pressure bag paving device, the air pressure bag paving device is controlled to stop working, and the paper dust packing collecting bag 13 is stopped to be continuously output.

In the 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 continuously work for a set time to stop working, namely controls the air pressure bag laying device to stop working in a delayed manner, so that the situation that the expanding state cannot reach the set state due to the fact that the paper dust packaging collecting bag 13 is retracted is avoided.

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, so as to start the air pressure bag laying device; at least when the control circuit is powered on, in the bag laying process or after the control circuit receives the electric control signal, the control unit sends a power-on execution signal to the electric loading unit and at least executes an initialization power-on action, preferably, the control unit executes the initialization power-on action once after receiving the starting signal every time so as to improve the detection accuracy. The electric loading unit electrically conducts each electric induction piece 7 and provides a low-voltage direct-current voltage in the initialization and power-on operation; meanwhile, the electric loading unit can also electrically conduct the paper scrap packing and collecting bag 13, a certain amount of charges are borne by the paper scrap packing and collecting bag 13, opposite sides of the paper scrap packing and collecting bag 13 are spread due to repulsion of like charges, the paper scrap packing and collecting bag 13 conveyed downwards can keep a good cylinder shape under the action of the charges, and the paper scrap packing and collecting bag 13 loaded with the charges can also change charge parameters or voltage parameters of the electric induction sheet 7 when contacting the electric induction sheet 7. Of course, the electric loading unit can be electrically connected with the paper scrap packing and collecting bag 13 and each electric sensing piece 7. After the voltage or the charge of the paper scrap packing and collecting bag 13 or each electric induction piece 7 reaches a set value, the electric loading unit electrically disconnects the paper scrap packing and collecting bag 13 and each electric induction piece 7; the electric signal detection unit is always electrically connected with the paper dust packing and collecting bag 13 or each electric induction piece 7 and is used for detecting whether the electric charge quantity or the electric charge quantity of the paper dust packing and collecting bag 13 or each electric induction piece 7 changes or whether the voltage value or the voltage value of the paper dust packing and collecting bag 13 or each electric induction piece 7 changes.

The control circuit is provided with an electric loading unit and a capacitor, wherein the electric loading unit is 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 induction sheet 7, the capacitor enables the electric induction sheet 7 to keep a basically stable voltage value after initialization and power-on operation are completed, the electric signal detection unit has a reference voltage, and when the paper dust packing collection bag 13 contacts the electric induction sheet 7, the change of the electric charge or the change of the voltage of the electric induction sheet 7 is more obvious, so that the detection accuracy of the electric signal detection unit is improved.

In the preferred embodiment, a dielectric sheet set may be mounted in the tub 2 in addition to the correlation type photoelectric sensor 8 or the electric induction sheet 7 mounted in the tub 2, and of course, only the dielectric sheet set may be directly mounted in the tub 2, and two dielectric sheets 6 of the dielectric sheet set may be fixed to inner surfaces of left and right tub walls of the tub 2, respectively.

In a specific embodiment, in the bag body detection step, a dielectric sheet set is mounted on the barrel body 2, and the dielectric sheet 6 in the dielectric sheet set 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 2. Preferably, the surface of the dielectric sheet 6 is attached with an insulating layer, and an insulating paint layer is generally sprayed on the surface of the dielectric sheet 6, for example, an iron sheet with the surface sprayed with the insulating paint layer is selected as the dielectric sheet 6, so that the dielectric sheet 6 is easy to process, for example, the dielectric sheet 6 can be obtained by simple iron sheet cutting and spraying, and the cost of the dielectric sheet 6 is extremely low. The voltage applied to the dielectric sheet set is generally controlled to be 3-12V, the dielectric sheet set can relatively hold a certain amount of charge or maintain a certain voltage after being electrified, and the dielectric parameter detection unit can detect the amount of charge or voltage applied to the dielectric sheet set.

In the bag body detection step, the electrical parameter detection unit selects a capacitance medium parameter detection unit, two dielectric plates 6 of the same dielectric plate group are used as capacitance medium plates in a circuit structure and are respectively and electrically connected with 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;

each dielectric sheet group comprises two dielectric sheets 6 facing oppositely, the two dielectric sheets 6 of the same dielectric sheet group are respectively arranged at the left side and the right side or the upper side and the lower side of the barrel body 2 and facing oppositely, and each dielectric sheet 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 conversion unit, and the control unit is respectively and electrically connected with the capacitance medium parameter detection unit, the comparison conversion unit and the automatic bag feeding device 5;

Receiving the capacitance medium parameter signals through a comparison conversion unit and transmitting a converted bag body parameter signal of the falling state of the reaction paper scrap packaging collecting bag 13 to a control unit;

after the control unit receives the bag body parameter signals, the control unit receives the bag body parameter signals of the bag falling state indicating device 15 arranged on the paper shredder head 1 and simultaneously controls the working state of the automatic bag feeding device 5, when the bag body parameter signals are smaller than the set bag body parameter threshold, the control unit controls the automatic bag feeding device 5 to keep electrified to work, when the bag body parameter signals are larger than the bag body parameter threshold, the control unit controls the automatic bag feeding device 5 to disconnect the power supply, and of course, the control unit also controls the automatic bag feeding device 5 to disconnect the power supply in a delayed manner, so that the condition that the paper scrap packing collecting bag 13 is retracted after the automatic bag feeding device 5 stops is avoided, and the condition that the descending position or the opening degree of the paper scrap packing collecting bag 13 is not in place is avoided.

For the technology using the electric induction sheet 7 as the induction element and the dielectric sheet 6 as the induction element, a low voltage direct current voltage can be provided to the electric induction sheet by the control unit, so that a certain amount of charge is pre-filled or a certain voltage is maintained before the detection is performed, and the detection accuracy is provided.

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 sheet group through the capacitance medium parameter detection unit or the low-voltage power supply unit; at least in the process of powering on the automatic bag feeding device 5, a detection signal is generated at a plurality of intervals at set time intervals by the control unit, and the detection signal is received by the capacitance medium parameter detection unit and the capacitance medium coefficients of the dielectric sheet groups are respectively detected.

In the preferred embodiment, the capacitive medium parameter detecting unit detects by using any one of the following four detecting modes or using any two detecting modes in combination,

specifically, charges or voltages are continuously or intermittently loaded to each corresponding dielectric sheet group through the low-voltage power supply unit respectively; before each time the dielectric parameter detection unit detects the dielectric parameters of each corresponding dielectric sheet group, or only in the detection process, the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric sheet group and is electrically disconnected with each corresponding dielectric sheet group by delaying a set time; the dielectric parameter detection unit is always electrically connected with each corresponding dielectric sheet group or at least detects to electrically conduct each corresponding dielectric sheet group after receiving the detection signal; the dielectric parameter detection unit detects the maximum charge capacity or maximum voltage that each respective dielectric sheet 6 is capable of to achieve detection of a dielectric parameter that includes at least the capacitance medium coefficient of each respective dielectric sheet group. The low-voltage direct-current voltage of 3-12V is supplied to the dielectric sheet group by the dielectric parameter detection unit in the detection process, and the capacitance medium coefficient of the dielectric sheet group is detected by the dielectric parameter detection unit.

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, a low-voltage power supply unit supplies a low-voltage direct-current voltage of 3-12V to the dielectric sheet group, and a dielectric parameter detection unit detects the capacitance medium coefficient of the dielectric sheet group. Specifically, at least in the process of powering on the automatic bag feeding device 5, the control unit continuously generates a detection signal at intervals for a set time; the low-voltage power supply unit is always and respectively electrically connected with each corresponding dielectric sheet group or is used for continuously or intermittently loading charges or voltages to each corresponding dielectric sheet group after receiving detection signals; before each time the dielectric parameter detection unit detects the dielectric parameters of each corresponding dielectric sheet group, or only in the detection process, the low-voltage power supply unit is respectively electrically connected with each corresponding dielectric sheet group and is electrically disconnected with each corresponding dielectric sheet group by delaying a set time; the dielectric parameter detection unit is always electrically connected with each corresponding dielectric sheet group, or at least detects to electrically conduct each corresponding dielectric sheet group after receiving the detection signal; the dielectric parameter detection unit detects the maximum charge capacity or maximum voltage that each respective dielectric sheet 6 is capable of to achieve detection of a dielectric parameter that includes at least the capacitance medium coefficient of each respective dielectric sheet group.

4) And connecting a capacitor in series or in parallel in a capacitor medium coefficient detection loop formed by connecting the capacitor medium parameter detection unit and each dielectric sheet group in series, enabling the corresponding capacitor medium coefficient detection loop to have a capacitor medium coefficient reference 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 coefficients of each dielectric sheet group, and detecting the capacitor medium coefficients of each dielectric sheet group through the capacitor medium parameter detection unit.

A plurality of groups of dielectric sheet groups are arranged in the barrel body 2, 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) In the preferred embodiment, the tub 2 is only provided with a dielectric sheet set, and two dielectric sheets 6 of the dielectric sheet set are respectively fixed at left and right sides of the tub 2 as shown in fig. 2, and upper and lower ends of the dielectric sheet 6 extend to upper and lower sides of the tub 2 respectively in a height direction, or upper and lower ends of the dielectric sheet 6 are adjacent to upper and lower sides of the tub 2 respectively in a longitudinal direction, and front and rear ends of the dielectric sheet 6 extend to front and rear sides of the tub 2 respectively in a longitudinal direction, or front and rear ends of the dielectric sheet 6 are adjacent to front and rear sides of the tub 2 respectively, so that left and right inner sides of the tub 2 are respectively covered with a dielectric sheet 6 to form a dielectric sheet set as shown in fig. 2. 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. The dielectric sheet 6 with the ultra-large area can hold larger charge or electric quantity when loading low-voltage direct-current voltage of 3-24V, 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 dust packing and collecting bag 13 descending between the two dielectric sheets 6 changes. In particular, when the lengths of the paper dust packing and collecting bags 13 between the two dielectric sheets 6 are different, or the overlapping areas of the paper dust packing and collecting bags 13 between the two dielectric sheets 6 and the dielectric sheets 6 are different, the difference of the electric charge amounts which can be contained by the dielectric sheet sets after the low-voltage direct-current voltage is supplied to the dielectric sheet sets is larger, namely the change amplitude of the capacitance medium coefficients of the dielectric sheet sets is larger, which means that the detection of the capacitance medium coefficients is more sensitive and accurate.

2) At least two groups of dielectric sheet groups are arranged in the barrel body 2, 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, 1-5 groups of dielectric 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 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 sheet groups are arranged side by side in the longitudinal direction at intervals along the side surface of the tub 2 in the height direction, two dielectric sheets 6 of each set of dielectric sheet groups are respectively fixed to the left and right side surfaces of the tub 2 and face opposite directions, the upper and lower sides of each dielectric sheet 6 extend to the upper and lower sides of the tub 2 respectively, and dielectric sheets 6 of two sets of dielectric sheet groups adjacent to each other in front and rear are in clearance fit as shown in fig. 3.

For example, 3 sets of dielectric sheet groups are arranged side by side in the height direction along the side surface of the barrel body 2 at intervals in the height direction, two dielectric sheets 6 of each set of dielectric sheet groups 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 dielectric sheets 6 of two sets of dielectric sheet groups adjacent to each other vertically are in clearance fit, 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 which are arranged in a matrix are arranged on the side plate of the barrel body 2, the paper dust packing 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 dust packing and collecting bag 13 can be obtained, the three-dimensional state of the paper dust packing and collecting bag 13 is simulated and displayed through the graphic display unit, the falling state of the paper dust packing and collecting bag 13 can be observed more directly and clearly when the paper dust packing and collecting bag 13 is automatically conveyed to the barrel body 2, and the position of the bottom of the paper dust packing and collecting bag 13 and the state of the bag body can also be observed more directly and clearly.

Preferably, the outer edges of the dielectric sheet groups located on the outer sides are adjacent to the edges of the corresponding sides of the tub 2. The entire side of the tub 2 is substantially entirely covered with the dielectric sheets 6 to solve the problem of insensitive induction caused by the relatively large relative distance of the two dielectric sheets 6 of the same dielectric sheet group.

3) At least one dielectric sheet group is arranged in the left side surface and the right side surface of the barrel body 2, 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 each 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 from the corresponding side surface of the barrel body 2 to the inner bottom surface of the barrel body 2, and the edges of the two dielectric sheets 6 belonging to the same dielectric sheet group which extend to the inner bottom surface of the barrel body 2 are arranged in parallel and are in clearance fit, so that the induction area is improved and the induction precision is improved.

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 discharging box 3 or extend to the bottom surface of the paper shredder head 1. Of course, an iron sheet electrically connected to the corresponding dielectric sheet 6 may be fixed to both sides of the chip discharge port 11 of the bottom surface of the shredder head 1, respectively, to form a C-shaped dielectric sheet set.

There are various techniques for detecting the capacitance medium coefficient, and calculating a capacitance medium coefficient by detecting at least one of the maximum charge amount, maximum voltage parameter or maximum current parameter or minimum charging time that can be accommodated by the respective dielectric sheet groups; for example, the maximum charge carried by the dielectric stack is directly detected and the capacitance medium coefficient is calculated, for example, by detecting the time required for loading the low-voltage direct-current voltage and bringing the voltage of the dielectric stack to the set value and calculating the capacitance medium coefficient, for example, by detecting the maximum current value for loading the low-voltage direct-current voltage and calculating the capacitance medium coefficient, so that the technical parameter used for detecting the capacitance medium coefficient may be current, voltage, charge or time.

In a preferred embodiment, the control circuit is provided with a storage unit electrically connected to the control unit, a relation conversion table obtained by pre-testing and a bag body parameter threshold value corresponding to the control of the automatic bag feeding device 5 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 forms of the paper dust packing and collecting bags 13 and capacitance medium parameters corresponding to the bag body parameters one by one respectively, the bag body parameters comprise at least one of a bag body parameter value representing the falling height, falling length, reaching area or bag body form of the paper dust packing and collecting bags 13, a bag body parameter interval value or a position code, the capacitance medium parameter comprises a capacitance medium value or a capacitance medium interval value of a capacitance medium coefficient of a dielectric sheet group corresponding to the corresponding bag body parameter, and after the comparison conversion unit receives the capacitance medium parameter, the conversion table is compared by the comparison conversion unit to obtain a corresponding bag body parameter, and a bag body parameter signal containing the bag body parameter is obtained, and the control unit receives the bag body parameter signal.

The invention also discloses a paper shredder for realizing the paper shredder paper scrap automatic packaging method, and the working process of the paper shredder paper scrap automatic packaging method is described above and will not be repeated. The paper scrap automatic packaging paper shredder is shown in fig. 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, a paper inlet 12 is formed in the upper part of the paper shredder head 1, a chip discharging port 11 is formed in the lower part of the paper shredder head, a paper shredder core is arranged in an inner cavity of the paper shredder head 1, a motor and a paper shredding transmission mechanism are fixedly arranged on the paper shredder core, the paper shredding cutter rod comprises a cutter shaft and a plurality of paper shredding blades which are serially arranged at intervals and are fixedly arranged on the cutter shaft, the corresponding adjacent two paper shredding blades of the two paper shredding cutter rods are in shearing fit, a cutter tip is arranged at the outer edge of each blade, the control circuit is electrically connected with the motor, the motor is in transmission connection with the paper shredding transmission mechanism, the paper shredding transmission mechanism is in transmission connection with the paper shredding cutter rod, paper or files and other objects are thrown into the paper shredding cutter rod through the paper shredding cutter rod, the paper shredding cutter rod is driven to rotate through the motor, and the paper shredding cutter blades are crushed into paper scraps through the objects and the paper shredding cutter and other objects are discharged downwards through the chip discharging port 11 which are arranged below the paper shredding port 11. 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 matched with the inner barrel or the door panel 20 in a touch and press mode and is used for conducting a power supply.

Specifically, the width of the paper dust collecting port 31 is not smaller than the width of the chip removing port 11, and the length of the paper dust collecting port 31 is not smaller than the length of the chip removing port 11; a door plate 20 which is opened by rotation is arranged in front of the barrel body 2 or an inner barrel which is pulled outwards is movably arranged in the barrel body 2, the door plate 20 is fixed in front of the inner barrel, the door plate 20 is matched with the barrel body 2 in a sealing way, and a transparent observation window 21 is arranged in the middle of the door plate 20. When the door panel 20 is closed on the front surface of the barrel body 2, the paper scrap packing and collecting bag 13 with the lower part sealed by hot melting seals the paper scrap collecting port 31, and the automatic bag discharging box 3 is sealed on 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 suction fan arranged on the lower part of the barrel body 2 starts to suck air, negative pressure is formed in the inner cavity of the barrel body 2, so that the paper scrap packing and collecting bag 13 can be smoothly conveyed downwards, and the paper scrap packing and collecting bag is shown in figures 2 to 5.

The bottom of the paper shredder head 1 or the upper part of the barrel body 2 is fixedly or movably clamped with an inner cavity for pre-storing the paper scraps packing and collecting bag 13 or an automatic bag discharging box 3 capable of storing and reloading the paper scraps packing and collecting bag 13.

An automatic paper discharging box 3 is arranged at the bottom of the paper shredder head 1, as shown in fig. 5 and 6, or an automatic paper discharging box 3 is arranged at the upper part of the barrel body 2, an inner cavity of the automatic paper discharging box 3 stores paper scraps packing and collecting bags 13, or the automatic paper discharging box 3 is arranged into a bag storing inner cavity 33 capable of storing the paper scraps packing and collecting bags 13, a paper scraps collecting opening 31 which is used for collecting paper scraps and penetrates through the automatic paper discharging box 3 from top to bottom is formed in the middle part of the automatic paper discharging box 3, and the paper scraps collecting opening 31 is positioned below the chip discharging opening 11; specifically, the automatic bag discharging box 3 comprises a frame with a paper dust collecting opening 31 formed by hollowing in the middle, the frame is in a ring shape or a shape like a Chinese character 'hui', an installation position is arranged at the bottom of the paper 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 the bottom surface or the side surface of the frame, and the top surface, the side surface or the bottom surface of the frame are in sealing fit or positioning fit with the corresponding connecting surface of the installation position so as to realize that the paper dust packing collecting bag 13 is sent into the barrel body 2 in a blowing or pumping mode.

The frame is provided with a storage bag inner cavity 33, the storage bag inner cavity 33 is in a ring shape or a shape like a Chinese character 'hui', as shown in fig. 6, the storage bag inner cavity 33 stores paper dust packing and collecting bags 13 which are continuous along the length direction of the bag body and are in a cylinder shape after being unfolded, the paper dust packing and collecting bags 13 are continuous, only open-ended through bags are selected as the bag bodies, the paper dust packing and collecting bags 13 are generally in a cylinder shape, an outlet 32 is formed at the upper opening of the storage bag inner cavity 33, a cover 34 is fixed or clamped on the frame, and the cover 34 can be opened to store the paper dust packing and collecting bags 13 into the storage bag inner cavity 33; the inner side of the automatic bag discharging box 3 is provided with a bag discharging opening 32, and the bag discharging opening 32 surrounds the paper dust collecting opening 31 for a circle. The paper scraps stored in the inner cavity are packed and collected by the bag outlet 32 and are output outwards, so that the paper scraps packed and collected bag 13 downwards extends to the bottom of the barrel body 2, the upper opening of the paper scraps packed and collected bag 13 which extends to the automatic bag outlet box 3 forms a paper falling opening larger than the chip discharging opening 11, and the fallen paper scraps are collected through the paper falling opening, so that the paper scraps are collected through the paper scraps packed and collected bag 13, the cleaning of the paper scraps is simpler and more convenient, and the paper scraps are prevented from flying around or polluting components of the pulverizer. The paper shredding knife rod is used for smashing the paper shredding scraps falling downwards, the paper shredding knife rod downwards falls into the paper shredding packing bag from the chip removal port 11 under the action of dead weight, the problem that the paper shredding knife rod is easy to adhere to the barrel wall when only adopting the barrel body 2 to directly collect the paper shredding in the prior art is solved, the paper shredding knife rod can prevent the paper shredding scraps from flying everywhere, and the paper shredding knife is energy-saving and environment-friendly.

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

In order to automatically convey the paper scraps packing and collecting bag 13 into the barrel body 2, an automatic bag conveying device 5 is arranged on the paper shredder head 1 or the barrel body 2, and of course, the paper shredder head 1 and the barrel body 2 can be respectively provided with the automatic bag conveying device 5, the automatic bag conveying device 5 comprises an air pressure bag paving device and a mechanical bag pressing mechanism, and the automatic bag conveying device 5 is positioned above or below the automatic bag discharging 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 and is used for outputting paper scraps in the automatic bag discharging box 3 to the barrel body 2 in a packing and collecting mode;

a bag body sealing and fusing device is arranged below the automatic bag discharging box 3 and is electrically connected with the control unit; at least one electric induction sheet 7 or a dielectric sheet group electrically connected with an electric parameter detection unit is arranged on the side surface or the inner bottom surface of the barrel body 2, the electric parameter detection unit continuously detects or alternately detects the electric induction sheet 7 or the dielectric sheet group for a plurality of times in the automatic bagging process and respectively obtains an electric parameter, and the electric parameter detection unit continuously or alternately conveys a bag body parameter signal at least comprising a bag falling state representing the paper dust packing and collecting bag 13 and a bag body shape to the control unit for a plurality of times according to the received electric parameter in the automatic bagging 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 body parameter signal, and is used for controlling the automatic bag feeding device 5 to stop working immediately or to stop working in a delayed mode, when the bag body parameter signal received by the control unit is smaller than a set bag body parameter threshold value, the control unit controls the automatic bag feeding device 5 to keep power-on working, and 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 5 to disconnect the power supply or disconnect the power supply in a delayed mode.

The automatic bag feeding device 5 in the shredder is any one or the combination of any two of the following three structures,

1) The automatic bag feeding device 5 selects a mechanical bag pressing mechanism arranged in the paper shredder head 1 or at the bottom, 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 weight which falls into the barrel body 2 by self weight so as to realize that the paper scrap packaging and collecting bag 13 which is sealed by the lower part in a hot melting way is fed into the barrel body 2;

2) The automatic bag feeding device 5 is a positive pressure bag blowing device arranged at the bottom of the paper shredder head 1 or 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 electrically connected with the control unit, the blowing fan is fixedly arranged above the automatic bag outlet box 3 and is provided with an air inlet surface and an air outlet surface, and the air outlet surface of the blowing fan faces or is communicated with the paper dust collecting opening 31;

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

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

1) The electric parameter detection unit is always electrically connected to each electric induction sheet 7 or each dielectric sheet group, continuously detects the electric 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 to each electric induction sheet 7 or each dielectric sheet group, and continuously detects the electrical parameters of each electric induction sheet 7 or each dielectric sheet group for a plurality of 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 which is transmitted to the electrical parameter detection unit at set time intervals continuously, the electrical parameter detection unit continuously detects the electrical parameter detection unit at least three times in a set time period after receiving the corresponding detection signal each time and respectively obtains a corresponding electrical parameter after each detection, the control circuit is electrically connected with the comparison conversion unit of the control unit, the comparison conversion unit is used for carrying out average calculation on a plurality of electrical parameters detected in the same time period and obtaining an electrical parameter average value, the comparison conversion unit is used for carrying out conversion on the calculated electrical parameter average value and obtaining a bag parameter signal, and the comparison conversion unit is used for continuously transmitting the bag parameter signal to the control unit for a plurality of times at intervals so as to realize detection and obtain an accurate electrical parameter and conversion to obtain an accurate bag parameter signal;

4) The electric parameter detection unit is always electrically connected to 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 to the control unit, and the paper scrap packing collection bag 13 and/or the electric induction sheet 7 are electrically connected to the electric parameter detection unit, or the paper scrap packing collection bag 13 or the electric induction sheet 7 are respectively electrically connected to the electric parameter detection unit and the low-voltage power supply unit;

the control unit generates a detection signal which is transmitted to the electrical parameter detection unit at set time intervals continuously; the low-voltage power supply unit is always kept electrically connected to each electric induction sheet 7 or each dielectric sheet group respectively, or is electrically connected to each electric induction sheet 7 or each dielectric sheet group respectively only after the low-voltage power supply unit receives the low-voltage power supply unit each time, or is electrically connected to each electric induction sheet 7 or each dielectric sheet group respectively after the low-voltage power supply unit receives the low-voltage power supply unit each time and is electrically disconnected in a delayed manner, so as to provide a low-voltage direct-current voltage for each electric induction sheet 7 or each dielectric sheet group;

each dielectric sheet group comprises two dielectric sheets 6 facing oppositely, and the two dielectric sheets 6 of the same dielectric 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 15 electrically connected with the control unit, and the control unit sends a bag body 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 reached by the bottom of the paper scrap packing and collecting bag 13 and position information reached by the extending bag edge of the paper scrap packing and collecting bag 13;

the appointed position which is at least reached by the side surface or the bottom surface of the paper scraps packing and collecting bag 13 in the automatic bag placing process is set as the 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 a dielectric sheet group is arranged at least at each nearest limit position;

the appointed area in the middle of the inner bottom surface of the barrel body 2 is set as a minimum limit contact surface, the projection of the automatic bag discharging 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 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;

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, and preferably, an iron sheet with a conductive surface on the surface, a capacitor or a capacitor medium sheet is selected as the electric induction sheet 7. The printed conductive layer printed on the inner bottom surface of the tub 2 is used as the electric induction sheet 7, and can be printed in any shape and any number according to design requirements.

1) When the paper scrap packing collection 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 packing collection bag 13 and the electric induction sheet 7, the electric parameter detection unit sends an electric control signal to the control unit, and after the control unit receives the electric control signal, the control unit sends a stop control signal or a power-off control signal to the automatic bag feeding device 5;

2) When the paper dust packing and collecting bag 13 enters the space between the two dielectric sheets 6 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 after the capacitance medium coefficient of the dielectric sheet group positioned at a specified position or at the nearest limit position changes, the electrical parameter detecting unit sends an electric control signal to the control unit, and after the control unit receives the electric control signal, the control unit sends a stop control signal or a power-off control signal to the automatic bag feeding device 5.

At least one electric induction sheet 7 is arranged in the barrel body 2, each electric induction sheet 7 electrically connected with the electric parameter detection unit respectively forms a detection loop, the installation structure of the electric induction sheet 7 is selected from any one of the following six installation structures or any two of the following six installation structures are used 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 plates 7 which are arranged at intervals are distributed on the inner bottom surface of the barrel body 2, and each electric induction plate 7 is arranged in a matrix or in a circumference;

At least one group of dielectric sheet groups is arranged in the barrel body 2, each dielectric sheet group electrically connected with the electrical parameter detection unit respectively forms a detection loop, the installation mode of the dielectric sheet group is selected from any one or the combination of any two of the following three installation structures,

1) Only one dielectric sheet set is installed in the tub 2, and two dielectric sheets 6 of the dielectric sheet set are respectively fixed at left and right sides of the tub 2, and upper and lower ends of the dielectric sheet 6 in the height direction are respectively extended to upper and lower sides of the tub 2 or upper and lower sides adjacent to the tub 2, and front and rear ends of the dielectric sheet 6 in the longitudinal direction are respectively extended to front and rear sides of the tub 2 or front and rear sides adjacent to the tub 2.

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

At least one capacitor is connected in series in each detection loop, the first electrode of each capacitor is respectively and electrically connected with the control unit or the low-voltage power supply unit, and the second electrode of each capacitor is respectively and electrically connected with the corresponding electric induction sheet 7 or the 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 set with multi-level indication, and an indicator symbol or a graphic display unit with a graphic display area, which are used for indicating the bag falling condition of the paper dust packing and collecting bag 13, and indicates or simulates the bag falling state or the bag body form of the paper dust packing and collecting bag 13 conveyed into the barrel body 2 through the bag falling state indicating device 15.

For example, the shredder head 1 of the shredder is provided 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 lamp, 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 dust packing and collecting bag 13 conveyed into the tub 2, as shown in fig. 8 and 9.

The indication form of the bag falling state indication means 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 sequential lighting indication or stepwise lighting indication through each LED lamp in the LED group, a display form of symbol or analog graphic indication through analog representation of the state of the bag falling into the tub 2.

The indication content of the graphic display unit comprises the automatic bag placing progress of the paper scrap packing and collecting bag 13, the bag falling height of the paper scrap packing and collecting bag 13 or the bag body opening form of the paper scrap packing and collecting bag 13; as shown in fig. 7, the bag falling state indicating device 15 indicates by a plurality of indicator lamps, or the bag falling state indicating device 15 indicates by a plurality of LED indicator lamp groups the position of the bottom of the paper dust packing and collecting bag 13 or the bag falling condition of the paper dust packing and collecting bag 13, or the bag falling state indicating device 15 broadcasts by a speaker voice the position of the bottom of the paper dust packing and collecting bag 13 or the bag falling condition of the paper dust packing and collecting bag 13.

According to the number and the installation positions of the dielectric sheets 6, the positions of the bottoms of the paper dust packing and collecting bags 13 can be displayed in a grading manner by combining the detection mode of the dielectric parameter detection unit, and meanwhile, the expansion condition of the paper dust packing and collecting bags 13 in the length direction or the width direction, namely, the positions of the outer edges of the paper dust packing and collecting bags 13 in the length direction or the width direction can be displayed in a grading manner; the real-time position of the bottom of the paper scrap packing and collecting bag 13 can be synchronously and continuously simulated and displayed in real time through the graphic display unit, and meanwhile, the expansion condition of the paper scrap packing and collecting bag 13 in the length direction or the width direction can be synchronously and continuously simulated and displayed through the graphic display unit, so that the state of the paper scrap packing and collecting bag 13 is more directly and clearly understood by a user. If the spreading state of the paper scrap packing and collecting bag 13 does not meet the requirement of the user after the pneumatic bag spreading device stops working, the user can touch the control key again to control the pneumatic bag spreading device to perform the bag spreading operation again, so that the spreading state of the paper scrap packing and collecting bag 13 meets the requirement of the user.

The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.

Claims

1. The automatic paper scrap packing method for the paper shredder is characterized by comprising the following steps of: comprises the steps of,

2. The method for automatically packaging paper shreds of paper shredder according to claim 1, wherein: the bag body position and/or the bag body shape of the paper dust packing and collecting bag are detected and judged in an auxiliary mode through a plurality of groups of correlation type photoelectric sensors arranged at different height positions of the side face of the barrel body and/or different positions of the inner bottom face of the barrel body;

3. The method for automatically packaging paper shreds of paper shredder according to claim 1, wherein: in the step of installing the automatic bag discharging box, the automatic bag discharging box comprises a frame with a hollow middle part to form the paper scrap collecting opening, wherein the frame is in a ring shape or a reverse shape, so that the width of the paper scrap collecting opening is not smaller than the width of the chip removing opening, and the length of the paper scrap collecting opening is not smaller than the length of the chip removing opening;

4. A method for automatically packing paper shreds of a shredder according to any one of claims 1 to 3, characterized in that: in the bag body detection step, the barrel body is arranged on the electric induction sheet, 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 induction sheet;

5. The method for automatically packing paper shreds of paper shredder according to claim 4, wherein: at least when the control circuit is electrified and started, in the automatic bagging process or after the control circuit receives the electric control signal, sending an electrifying execution signal to the low-voltage power supply unit through the control unit and executing an initializing electrifying action at least once, and electrically conducting the paper scrap packaging collecting bag and/or each electric induction sheet through the electric parameter detection unit or the low-voltage power supply unit in the initializing electrifying action to provide a low-voltage direct-current voltage for the paper scrap packaging collecting bag or each electric induction sheet;

6. A method for automatically packing paper shreds of a shredder according to any one of claims 1 to 3, characterized in that: in the bag body detection step, the dielectric sheet group is installed on the barrel body, in the bag body detection step, a capacitance dielectric parameter detection unit is selected as an electrical parameter detection unit, two dielectric sheets of the same dielectric sheet group are used as capacitance dielectric sheets in a circuit structure and are respectively and electrically connected with the capacitance dielectric parameter detection unit, and capacitance dielectric coefficients of the dielectric sheet groups are respectively detected through the capacitance dielectric parameter detection unit;

7. The method for automatically packaging paper shreds of paper shredder according to claim 6, wherein: the control circuit is provided with a low-voltage power supply unit electrically connected with the control unit, and a low-voltage direct-current voltage is respectively provided for each dielectric sheet group through the capacitance medium parameter detection unit and/or the low-voltage power supply 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 combination of any two of the following three mounting structures,

1) Only one dielectric sheet group is arranged in the barrel body, two dielectric sheets of the dielectric sheet group are respectively fixed on the left side and the right side of the barrel body, the upper end and the lower end of the dielectric sheet in 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 of the adjacent barrel body, and the front end and the rear end of the dielectric sheet in 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 of the adjacent barrel body;

8. The method for automatically packaging paper shreds of paper shredder according to claim 6, wherein: the control circuit is provided with a storage unit electrically connected with the control unit, a relation conversion table obtained by pre-testing and a bag parameter threshold value corresponding to the control of the automatic bag feeding device to disconnect the power supply are stored in the storage unit,

9. The automatic paper scrap packing paper shredder for realizing the automatic paper scrap packing method of the paper shredder in any one of claims 1 to 8 comprises a control circuit, a paper shredder head and a barrel body, wherein the paper shredder head is arranged on the upper part of the barrel body, a paper inlet is formed in the upper part of the paper shredder head, a chip removal port is formed in the lower part of the paper shredder head, a paper shredder core is arranged in an inner cavity of the paper shredder head, a motor, a transmission mechanism and a paper shredding knife bar are arranged on the paper shredder core, the motor is connected with the transmission mechanism in a transmission manner, the transmission mechanism is connected with the paper shredding knife bar, the paper inlet is positioned above the paper shredding knife bar, and the chip removal port is positioned below the paper shredding knife bar, and the automatic paper scrap packing method is characterized in that: the control circuit is provided with a control unit and an electrical parameter detection unit,

10. The automatic paper scrap packing shredder according to claim 9, wherein: the automatic bag discharging box comprises a frame with a hollow middle part to form the paper scrap collecting port, the frame is in a ring shape or a reverse shape, the width of the paper scrap collecting port is not smaller than the width of the chip removing port, and the length of the paper scrap collecting port is not smaller than the length of the chip removing port;

11. The automatic paper scrap packing shredder according to claim 10, wherein:

At least one electric induction sheet is arranged in the barrel body, each electric induction sheet electrically connected with the electric parameter detection unit respectively forms a detection loop, the installation structure of the electric induction sheet is any one of the following six installation structures or any two of the following six installation structures are used in combination,

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