CN109850252B - Operation method for intermittent paperboard conveying mechanism - Google Patents

Abstract

The invention discloses an operation method for an intermittent paper board conveying mechanism, which comprises the steps of putting stacked paper boards on a paper board conveying unit, and adjusting the height of a baffle plate on a paper board blocking unit according to the thickness of a single paper board; starting a driving motor on the paper board transmission unit, and driving the stacked paper boards to be conveyed forwards one by the annular conveying belt; the paperboard lifting unit lifts the stacked paperboards to move upwards, the stacked paperboards are separated from the annular conveying belt of the paperboard conveying unit, and the time relay starts to time; the baffle plate of the paperboard blocking unit moves downwards to be in contact with the annular conveying belt; after the time relay arrives, the paper board lifting unit lifts the stacked paper boards to move downwards, and the paper board transmission unit forwards conveys the stacked paper boards one by one; the baffle plate of the paperboard blocking unit moves upwards to be separated from the annular conveying belt; the above steps are repeated to intermittently feed the stacked sheets forward one by one. The invention has high automation efficiency and high working efficiency, and can completely meet the requirements of mechanical automatic mass production.

Description

An operating method for intermittently conveying cardboard mechanisms

technical field

The invention relates to the technical field of carton packaging machinery and equipment, in particular to an operation method for an intermittently conveying cardboard mechanism.

Background technique

Packaging cartons are the most widely used packaging products. According to different materials, there are corrugated cardboard boxes, single-layer cardboard boxes, etc., with various specifications and models. As an indispensable part of modern logistics, packaging cartons bear the important responsibility of containing, protecting products and beautiful.

In the past, printing houses basically used manual methods to make packaging cartons or covers. However, with the large increase in the amount of product packaging, especially the quality requirements for product packaging boxes and hardcover book covers, manual production requires a lot of labor, which greatly increases the burden on enterprises. In order to free the packaging carton and cover manufacturing industry from traditional manual labor, the research and development of automatic paper feeders is the focus of current technology research and development. The automatic paper feeder is a device that provides paper feeding for various types of packaging cartons, books, posters, packaging boxes and other paper products or plastic products for cutting, printing, laminating and other processing processes.

As the most important part of the paper laying machine, the automatic paper feeder is directly related to the rhythm and accuracy of the paper laying. At present, the existing automatic paper feeding mechanisms on the market, some use guide rails to feed paper, the structure is complex, and the cost is too high; some are relatively simple in structure, but easy to deviate, and the paper feeding accuracy is poor, which cannot meet the requirements of high-quality customers in the industry. accuracy.

SUMMARY OF THE INVENTION

The present invention solves the technical problems of complex structure of automatic paper feeding mechanism, too high cost and poor paper feeding accuracy in the prior art, which cannot meet the accuracy required by high-quality customers in the industry, and aims to provide a paperboard for intermittent feeding. How the organization operates.

The present invention is achieved through the following technical solutions:

An operating method for an intermittently conveying cardboard mechanism, characterized in that the method comprises the following steps:

Step 1: Put the stacked cardboards on the cardboard transfer unit, and adjust the height of the baffle on the cardboard blocking unit according to the thickness of a single cardboard;

Step 2: Start the drive motor on the cardboard conveying unit, the drive motor drives the endless conveyor belt to rotate, and the endless conveyor belt drives the cardboards under the stacked cardboards to transport forward one by one;

Step 3: After the bottom cardboard is transported from the cardboard transfer unit, the cardboard lifting unit lifts the stacked cardboard and moves upward, the stacked cardboard is separated from the endless conveyor belt of the cardboard transfer unit, and the time relay starts to count;

Step 4: While the cardboard lifting unit lifts the stacked cardboards and moves upward, the baffle of the cardboard blocking unit moves downwards and contacts the endless conveyor belt;

Step 5: After the time relay delays to the set time, the cardboard lifting unit lifts the stacked cardboards and moves downward, the stacked cardboards are frictionally connected with the endless conveyor belt of the cardboard conveying unit, and the cardboard conveying unit moves the lowermost cardboard to the stacking cardboard. forward one by one;

Step 6: While the cardboard lifting unit lifts the stacked cardboards and moves downwards, the baffle plate of the cardboard blocking unit moves upwards and disengages from the endless conveyor belt;

Step 7: Repeat steps 1 to 6 to feed the stacked cardboards forward one by one intermittently.

Preferably, the cardboard lifting unit of the method is located in the inlet direction of the cardboard conveying unit, and the cardboard blocking unit is located in the exit direction of the cardboard conveying unit;

The cardboard conveying unit includes left and right side plates parallel to each other and spaced apart from each other, a driving roller and a driven roller are arranged between the left and right side plates, and the ends of the driving roller and the driven roller are It is respectively connected with the left side plate and the right side plate in rotation, and a plurality of annular conveying belts arranged at intervals are connected to the driving roller and the driven roller, and the annular conveying belt is used to drive the cardboard to move toward the outlet direction;

The cardboard lifting unit includes a first beam and a second beam that are parallel to each other and spaced apart. A plurality of connecting plates are respectively rotatably connected to the second beam, and a top plate is provided between the two opposite connecting plates on the first beam and the second beam, and the end of the top plate is connected with the top of the connecting plate. The bottom of the connecting plate is connected with a driving mechanism for driving a plurality of connecting plates to rotate, and the driving mechanism is used to drive a plurality of top plates to move up and down;

The cardboard blocking unit includes a limit plate and a baffle, the two ends of the limit plate are respectively fixedly connected to the left side plate and the right side plate, and a circle connected to the bottoms of the plurality of connecting plates is opened on the limit plate. Arc notch, the bottoms of a plurality of the connecting plates are movably connected with the circular arc notch through cylindrical pins, the baffle is located above the endless conveyor belt, the two ends of the baffle are provided with vertical plates, at the bottom of the vertical plate There is a shaft hinged with the bottom of the connecting plate, and the connecting plate drives the baffle to move up and down.

In a preferred solution, the left side plate or the right side plate is provided with a driving motor for driving the driving roller to rotate, a driving gear is connected to the rotor output shaft of the driving motor, and a driving gear is provided on the driving roller in meshing connection with the driving gear. The reduction gear, the driving motor drives the driving roller to rotate.

Preferably, the endless conveyor belt includes a bearing surface and an idle surface, the first beam and the second beam are located between the bearing surface and the idle surface of the endless conveyor belt, and the cross-sections of the first beam and the second beam are rectangular In the structure, a plurality of hinge shafts are arranged on the side walls of the first beam and the second beam, and the plurality of hinge shafts are arranged at intervals along the axial direction of the first beam and the second beam, and the connecting plate is a rectangular structure. The top and bottom of the plate are respectively provided with mounting holes, the middle of the connecting plate is provided with a hinge hole, and the hinge hole of the connecting plate is used to connect the hinge shafts on the side walls of the first beam and the second beam.

In a preferred solution, the drive mechanism includes a drive plate, a push plate and an air cylinder, the air cylinder is fixed on the left plate or the right plate through a mounting seat, the drive plate is provided with two, and the two drive plates are respectively connected with the first plate. The axes of the beam and the second beam are parallel, the two driving plates are respectively connected in rotation with the bottoms of the connecting plates on the first beam and the second beam, and the push plates are fixedly connected with the ends of the two driving plates. The middle part is provided with an elongated hole connected with the telescopic arm of the cylinder, and the cylinder pushes the connecting plate to rotate back and forth on the first beam and the second beam.

The preferred solution further includes a detection unit and an alarm, the detection unit includes a through-beam photoelectric sensor, and the transmitter and receiver of the through-beam photoelectric sensor are respectively fixed on the left side panel and the right side panel. The beam-type photoelectric sensor is electrically connected with the alarm through a detection circuit, and the alarm is an acousto-optic alarm, and the through-beam photoelectric sensor is used for detecting the layer height of the cardboard stack.

The preferred solution further includes a cardboard width adjustment unit, the cardboard width adjustment unit includes a linear module and a dial, two ends of the linear module are fixed between the left and right panels, and the dial is provided with Two, two dials are slidably connected with the linear module, and the linear module drives the two dials to move linearly in the directions of approaching and moving away from each other.

Preferably, the baffle is fixedly connected with a plurality of elastic pressure strips at intervals, the plurality of elastic pressure strips extend toward the outlet of the cardboard conveying unit, and the plurality of elastic pressure strips are arc-shaped spring steel plates.

Preferably, the baffle is provided with an adjustment screw, the adjustment screw is threadedly connected with the baffle, and the adjustment screw is used to adjust the distance between the baffle and the endless conveyor belt.

Compared with the prior art, the present invention has the following advantages and beneficial effects: an operation method of the present invention for intermittently conveying a cardboard mechanism, the cardboard conveying mechanism mainly adopts a cardboard conveying unit, a cardboard lifting unit and a cardboard blocking unit Automatic sheet-fed feeding of stacked cardboards in synergy.

1) The cardboard conveying unit of this cardboard conveying mechanism adopts driving rollers and driven rollers to drive multiple endless conveyor belts to rotate along the set direction on the left and right side panels. The stacked cardboards are located above the endless conveyor belts. The endless conveyor belt drives the last layer of the stacked cardboards to be transported out from the outlet direction of the cardboard conveying unit through friction to complete the one-time cardboard conveying.

2) The cardboard lifting unit of the cardboard conveying mechanism adopts a plurality of connecting plates rotatably connected to the first beam and the second beam respectively, and a top plate is arranged between the two opposite connecting plates on the first beam and the second beam. The bottom of the plurality of connecting plates is connected with a driving mechanism that drives the rotating motion of the plurality of connecting plates. The driving mechanism is used to drive the plurality of top plates to move up and down, and the driving mechanism drives the plurality of top plates to move up and down, so that the position of the top plate is higher or lower than the annular conveying. Belt, so as to realize automatic topping of paper and separate the paper and convey one sheet of paper at a time.

3) The baffle of the cardboard blocking unit of the cardboard conveying mechanism moves up and down synchronously with the top plate of the cardboard lifting unit. The baffle of the cardboard blocking unit is located above the endless conveyor belt, and the connecting plate drives the top plate to move up and down at the same time. Realize the automatic opening and closing of the shutter. When the top plate is higher than the endless conveyor belt, the baffle is in contact with the endless conveyor belt, preventing the output of the cardboard. On the contrary, when the top plate is lower than the endless conveyor belt, the baffle is higher than the endless conveyor belt, and the distance between the baffle and the endless conveyor belt is The thickness of a piece of cardboard realizes the automatic conveying and stopping of the cardboard.

4) The cardboard conveying mechanism is also equipped with a detection unit and an alarm. The detection unit uses a through-beam photoelectric sensor to detect the height of the stacked cardboard. When the stacking height is lower than the set value, the through-beam photoelectric sensor passes through the detection circuit. Electrically connected with the alarm, the alarm can realize the alarm of material shortage, automatically remind the workers, and reduce the manual labor.

5) The cardboard conveying mechanism is also provided with a cardboard width adjustment unit. The cardboard width adjustment unit adopts two dials to slide and connect with the linear module, and the linear module drives the two dials to move linearly in the directions of approaching and moving away from each other to achieve Limit the cardboard of different widths. The cardboard conveying mechanism of the invention has high automation efficiency, high work efficiency, compact structure, flexible and precise control, and can fully meet the requirements of mechanical automation scale production, thereby reducing labor waste and production cost.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present invention. In the attached image:

Fig. 1 is the structure top view of the present invention;

Fig. 2 is the structural front view of the present invention;

Fig. 3 is the right side view of the structure of the present invention;

FIG. 4 is a schematic structural diagram of a first viewing angle of the structure of the present invention;

FIG. 5 is a schematic structural diagram of the structure of the present invention from a second viewing angle.

The marks in the attached drawings and the corresponding parts names:

101-left side plate, 2-right side plate, 103-drive roller, 104-driven roller, 105-endless conveyor belt, 106-reduction gear, 107-drive motor, 201-first beam, 202-top plate, 203 -Connecting plate, 204-Push plate, 205-Cylinder, 206-Drive plate, 207-Second beam, 301-Baffle plate, 302-Limit plate, 303-Elastic bead, 401-Linear module, 402-Dial plate , 501 - transmitter, 502 - receiver.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present invention.

Example

As shown in Fig. 1 to Fig. 5, an operation method for intermittently conveying cardboard mechanism of the present invention includes the following steps:

Step 1: Put the stacked cardboards on the cardboard transfer unit, and adjust the height of the baffle 301 on the cardboard blocking unit according to the thickness of a single cardboard;

Step 2: Start the drive motor 107 on the cardboard conveying unit, the drive motor 107 drives the endless conveyor belt 105 to rotate, and the endless conveyor belt 105 drives the cardboards under the stacked cardboards to be transported forward one by one;

Step 3: After the bottom cardboard is transported from the cardboard transfer unit, the cardboard lifting unit lifts the stacked cardboard and moves upward, the stacked cardboard is separated from the endless conveyor belt of the cardboard transfer unit, and the time relay starts to count;

Step 4: While the cardboard lifting unit lifts the stacked cardboards and moves upwards, the baffle plate 301 of the cardboard blocking unit moves downwards and contacts the endless conveyor belt 105;

Step 5: After the time relay delays to the set time, the cardboard lifting unit lifts the stacked cardboards and moves downward, and the stacked cardboards are frictionally connected with the endless conveyor belt 105 of the cardboard transfer unit. The cardboard is transported forward one by one;

Step 6: While the cardboard lifting unit lifts the stacked cardboards and moves downwards, the baffle plate 301 of the cardboard blocking unit moves upwards and disengages from the endless conveyor belt 105;

Step 7: Repeat steps 1 to 6 to feed the stacked cardboards forward one by one intermittently.

The method includes a cardboard conveying unit, a cardboard lifting unit and a cardboard blocking unit, wherein the cardboard lifting unit is located at the entrance direction of the cardboard conveying unit, and the cardboard blocking unit is located at the exit direction of the cardboard conveying unit. The cardboard conveying mechanism mainly adopts the cooperation of a cardboard conveying unit, a cardboard lifting unit and a cardboard blocking unit to automatically transport the stacked cardboards individually.

Specifically, the cardboard conveying unit includes a left side plate 101 and a right side plate 102 which are arranged parallel to each other and spaced apart. The left side plate 101 and the right side plate 102 are made of 10mm thick steel plate material. A driving roller 103 and a driven roller 104 are arranged therebetween, and the ends of the driving roller 103 and the driven roller 104 are rotatably connected to the left side plate 101 and the right side plate 102 respectively. The connection between the left side plate 101 and the right side plate 102 and the driven roller 104 is provided with an elongated mounting hole, the mounting hole is used to adjust the distance between the driving roller 103 and the driven roller 104 . The driving roller 103 and the driven roller 104 are connected with two endless conveyor belts 105 arranged at intervals. The number of endless conveyor belts 105 is not limited to two, and can be appropriately set according to the width of the cardboard. The endless conveyor belt 105 is used to drive the cardboard. Move towards the exit. The left side plate 101 is provided with a drive motor 107 for driving the driving roller 103 to rotate, the rotor output shaft of the driving motor 107 is connected with a driving gear, and the driving roller 103 is provided with a reduction gear 106 meshed with the driving gear. 107 drives the driving roller 103 to rotate.

The cardboard lifting unit includes a first cross beam 201 and a second cross beam 207 which are parallel to each other and spaced apart from each other. The endless conveyor belt 105 includes a bearing surface and an idle surface. The bearing surface is located at the top of the endless conveyor belt 105, and the idle surface is located at the bottom of the endless conveyor belt 105. The bearing surface and the idle surface are not fixed. The rotation of the belt 105 is converted, and the first beam 201 and the second beam 207 are located between the bearing surface and the idle surface of the endless conveyor belt 105 . The structures of the first beam 201 and the second beam 207 are the same, the cross-sections of the first beam 201 and the second beam 207 are rectangular structures, and three hinge shafts are arranged on the side walls of the first beam 201 and the second beam 207. The number is not limited to three, and can be appropriately set according to the width of the cardboard. The three hinge shafts are arranged at intervals along the axial direction of the first beam 201 and the second beam 207 . The hinge shafts on the first beam 201 and the second beam 207 are respectively rotatably connected with connecting plates 203. The connecting plates 203 have a rectangular structure. The top and bottom of the connecting plates 203 are respectively provided with mounting holes, and the middle of the connecting plates 203 is provided with hinges. Holes, the hinge holes of the connecting plate 203 are used to connect the hinge shafts on the side walls of the first beam 201 and the second beam 207 .

A top plate 202 is provided between the two opposite connecting plates 203 on the first cross beam 201 and the second cross beam 207 . The ends of the top plate 202 are connected with the mounting holes on the top of the connecting The bottom is connected with a driving mechanism that drives the three connecting plates 203 to rotate. The drive mechanism includes a drive plate 206 , a push plate 204 and an air cylinder 205 , and the air cylinder 205 is fixed on the left side plate 101 through a mounting seat. There are two driving plates 206, the two driving plates 206 are respectively parallel to the axes of the first beam 201 and the second beam 207, and the two driving plates 206 are respectively arranged below the first beam 201 and the second beam 207. The root drive plate 206 is rotatably connected with the bottom mounting holes of the connecting plate 203 on the first beam 201 and the second beam 207 through cylindrical pins. The push plate 204 is fixedly connected with the ends of the two drive plates 206, and an elongated hole connected to the telescopic arm of the cylinder 205 is provided in the middle of the push plate 204. The cylinder 205 pushes the connecting plate 203 between the first beam 201 and the second beam 207 rotates up and down, and the connecting plate 203 drives the top plate 202 to move up and down. The air cylinder 205 is controlled by a time relay, and the time relay controls the air cylinder 205 to push the connecting plate 203 to rotate back and forth on the first beam 201 and the second beam 207 within a set time period.

The blocking unit includes a limit plate 302 and a baffle plate 301. Both ends of the limit plate 302 are fixedly connected to the left side plate 101 and the right side plate 102 respectively. The arc slot connected by the mounting hole, the bottoms of the three connecting plates 203 are movably connected with the arc slot through the cylindrical pin, and the bottom of the connecting plate 203 drives the cylindrical pin to rotate in the arc slot, and the arc slot The rotation angle of the connecting plate 203 is limited, and the arc length of the arc-shaped notch is specifically set according to the thickness of a single cardboard. The longer the arc length of the arc-shaped notch, the greater the rotation angle of the connecting plate 203. The greater the range of up and down movement of the baffle 301 and the top plate 202 is. The baffle 301 is located above the endless conveyor belt 105, and the distance between the baffle 301 and the endless conveyor belt 105 is the thickness of a piece of cardboard passing through. Two ends of the baffle 301 are provided with vertical plates, and the bottom of the vertical plate is provided with a shaft hinged with the bottom mounting holes of the connecting plates 203 on both sides of the displacement. The connecting plates 203 drive the baffle 301 to move up and down when rotating. When the connecting plate 203 moves up and down, it realizes the automatic conveying and stopping of the cardboard.

The baffle 301 is fixedly connected with three elastic pressure strips 303 at intervals. The three elastic pressure strips 303 extend toward the outlet of the cardboard conveying unit. The three elastic pressure strips 303 are arc-shaped spring steel plates, and the arc-shaped spring steel plates hold the output cardboard forward. sports. An adjusting screw is provided on the baffle 301, and the adjusting screw is connected with the baffle 301 in a threaded connection. The adjusting screw is used to adjust the distance between the baffle 301 and the endless conveyor belt 105, and is suitable for cardboards with different thicknesses.

working principle:

The present invention provides an operation method for an intermittently conveying cardboard mechanism. The cardboard conveying mechanism mainly adopts the cooperative cooperation of a cardboard conveying unit, a cardboard lifting unit and a cardboard blocking unit to automatically convey single sheets of stacked cardboards.

The cardboard conveying unit of the cardboard conveying mechanism adopts the driving roller 101 and the driven roller 102 to drive the two endless conveyor belts 105 to rotate along the set direction on the left side plate 101 and the right side plate 102, and the stacked cardboards are located at the end of the endless conveyor belt 105. Above, the two endless conveyor belts 105 drive the last-to-last layer of cardboards in the stacked cardboards to be transported out from the outlet direction of the cardboard conveying unit through friction, so as to complete one cardboard conveyance.

The cardboard lifting unit of the cardboard conveying mechanism adopts three connecting plates 203 rotatably connected on the first beam 201 and the second beam 207 respectively, and between the two connecting plates 203 on the first beam 201 and the second beam 207 opposite to each other. There is a top plate 202, and the bottom of the three connecting plates 203 is connected with a driving mechanism for driving the three connecting plates 203 to rotate. The position of 202 is higher or lower than the endless conveyor belt 105, so as to realize the automatic topping of the paper to separate the paper and convey one sheet of paper at a time. The machine's packaging box paper feeds.

The baffle plate 301 of the cardboard blocking unit of the cardboard conveying mechanism moves up and down synchronously with the top plate 202 of the cardboard lifting unit. The baffle plate 301 of the cardboard blocking unit is located above the endless conveyor belt 105, and the connecting plate 203 drives the top plate 202 to move up and down while driving the baffle plate 202. The plate 301 moves up and down to realize the automatic opening and closing of the baffle 301 . When the top plate 202 is higher than the bearing surface of the endless conveyor belt 105, the baffle 301 contacts with the endless conveyor belt 105, preventing the output of the cardboard. On the contrary, when the top plate 202 is lower than the bearing surface of the endless conveyor belt 105, the baffle 301 is higher than the bearing surface of the endless conveyor belt 105, and the distance between the baffle 301 and the endless conveyor belt 105 is the thickness of a piece of cardboard. automatic delivery and stop.

In a preferred embodiment, the cardboard conveying mechanism further includes a detection unit and an alarm, the detection unit includes a through-beam photoelectric sensor, and the transmitter 501 and receiver 502 of the through-beam photoelectric sensor are respectively fixed on the left side panel 101 and the right side on board 102 . The through-beam photoelectric sensor is electrically connected to the alarm through a detection circuit, and the alarm is an acousto-optic alarm. The through-beam photoelectric sensor is used to detect the layer height of the cardboard stack. The detection unit uses a through-beam photoelectric sensor to detect the height of the stacked cardboard. When the stacking height is lower than the set value, the through-beam photoelectric sensor is electrically connected to the alarm through the detection circuit. Carry out automatic reminders to reduce manual labor.

In the preferred embodiment, the cardboard conveying mechanism further includes a cardboard width adjustment unit, the cardboard width adjustment unit includes a linear module 401 and a dial plate 402, and both ends of the linear module 401 are fixed between the left side plate 101 and the right side plate 102 . There are two dials 402, and the two dials 402 are slidably connected with the linear module 401. The linear module 401 drives the two dials 402 to move linearly in the directions of approaching and moving away from each other, so as to realize the restriction of cardboards of different widths. bit.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. An operating method for an intermittent conveying cardboard mechanism, characterized in that the method comprises the following steps: Step 1: Put the stacked cardboards on the cardboard transfer unit, and adjust the height of the baffle on the cardboard blocking unit according to the thickness of a single cardboard; Step 2: Start the drive motor on the cardboard conveying unit, the drive motor drives the endless conveyor belt to rotate, and the endless conveyor belt drives the cardboards under the stacked cardboards to transport forward one by one; Step 3: After the bottom cardboard is transported from the cardboard transfer unit, the cardboard lifting unit lifts the stacked cardboard and moves upward, the stacked cardboard is separated from the endless conveyor belt of the cardboard transfer unit, and the time relay starts to count; Step 4: While the cardboard lifting unit lifts the stacked cardboards and moves upward, the baffle of the cardboard blocking unit moves downwards and contacts the endless conveyor belt; Step 5: After the time relay delays to the set time, the cardboard lifting unit lifts the stacked cardboards and moves downward, the stacked cardboards are frictionally connected with the endless conveyor belt of the cardboard conveying unit, and the cardboard conveying unit moves the lowermost cardboard to the stacking cardboard. forward one by one; Step 6: While the cardboard lifting unit lifts the stacked cardboards and moves downwards, the baffle plate of the cardboard blocking unit moves upwards and disengages from the endless conveyor belt; Step 7: Repeat steps 1 to 6 to intermittently convey the stacked cardboards forward one by one; The cardboard lifting unit of the method is located in the inlet direction of the cardboard conveying unit, and the cardboard blocking unit is located in the exit direction of the cardboard conveying unit; The cardboard conveying unit includes left and right side plates parallel to each other and spaced apart from each other, a driving roller and a driven roller are arranged between the left and right side plates, and the ends of the driving roller and the driven roller are It is respectively connected with the left side plate and the right side plate in rotation, and a plurality of annular conveying belts arranged at intervals are connected to the driving roller and the driven roller, and the annular conveying belt is used to drive the cardboard to move toward the outlet direction; The cardboard lifting unit includes a first beam and a second beam that are parallel to each other and spaced apart. A plurality of connecting plates are respectively rotatably connected to the second beam, and a top plate is provided between the two opposite connecting plates on the first beam and the second beam, and the end of the top plate is connected with the top of the connecting plate. The bottom of the connecting plate is connected with a driving mechanism for driving a plurality of connecting plates to rotate, and the driving mechanism is used to drive a plurality of top plates to move up and down; The cardboard blocking unit includes a limit plate and a baffle, the two ends of the limit plate are respectively fixedly connected to the left side plate and the right side plate, and a circle connected to the bottoms of the plurality of connecting plates is opened on the limit plate. Arc notch, the bottoms of a plurality of the connecting plates are movably connected with the circular arc notch through cylindrical pins, the baffle is located above the endless conveyor belt, the two ends of the baffle are provided with vertical plates, at the bottom of the vertical plate There is a shaft hinged with the bottom of the connecting plate, and the connecting plate drives the baffle to move up and down. 2 . The operation method for intermittently conveying cardboard mechanism according to claim 1 , wherein the left side plate or the right side plate is provided with a driving motor for driving the driving roller to rotate, and the driving motor is 2. 3 . The output shaft of the rotor is connected with a drive gear, the drive roller is provided with a reduction gear meshed with the drive gear, and the drive motor drives the drive roller to rotate. 3. An operation method for an intermittently conveying cardboard mechanism according to claim 1, wherein the endless conveyor belt comprises a bearing surface and an idle surface, and the first beam and the second beam are located in the endless conveying belt. Between the bearing surface and the idle surface of the belt, the cross-sections of the first beam and the second beam are rectangular structures, and a plurality of hinge shafts are arranged on the side walls of the first beam and the second beam, and the plurality of hinge shafts are arranged along the first and second beams. A beam and a second beam are arranged at intervals in the axial direction, the connecting plate is a rectangular structure, and mounting holes are respectively provided at the top and bottom of the connecting plate, and the middle of the connecting plate is provided with a hinge hole, and the hinge hole of the connecting plate is A hinge shaft on the side wall for connecting the first beam and the second beam. 4. An operation method for an intermittently conveying cardboard mechanism according to claim 1, wherein the driving mechanism comprises a driving plate, a pushing plate and an air cylinder, and the air cylinder is fixed on the left side plate through a mounting seat Or on the right side plate, the drive plate is provided with two, the two drive plates are respectively parallel to the axes of the first beam and the second beam, and the two drive plates are respectively connected with the connecting plates on the first beam and the second beam. The bottom is rotatably connected, the push plate is fixedly connected with the ends of the two drive plates, and the middle of the push plate is provided with an elongated hole connected with the telescopic arm of the cylinder, the cylinder pushes the connecting plate between the first beam and the second Rotation movement back and forth on the beam. 5. An operation method for an intermittently conveying cardboard mechanism according to claim 1, further comprising a detection unit and an alarm, the detection unit comprising a through-beam photoelectric sensor, the through-beam type The transmitter and receiver of the photoelectric sensor are respectively fixed on the left side plate and the right side plate, the through-beam photoelectric sensor is electrically connected with the alarm through a detection circuit, and the alarm is an acousto-optic alarm, through-beam photoelectric The sensor is used to detect the layer height of the cardboard stack. 6. An operation method for an intermittently conveying cardboard mechanism according to claim 1, further comprising a cardboard width adjustment unit, the cardboard width adjustment unit comprising a linear module and a dial, the linear The two ends of the module are fixed between the left side plate and the right side plate. There are two dial plates. The two dial plates are slidably connected with the linear module, and the linear module drives the two dial plates to approach each other. and moving in a straight line away from each other. 7 . The operation method for an intermittently conveying cardboard mechanism according to claim 1 , wherein a plurality of elastic pressure strips are fixedly connected at intervals on the baffle plate, and the plurality of elastic pressure strips are directed to the outlet of the cardboard conveying unit. 8 . extending in the direction, the plurality of elastic pressing strips are arc-shaped spring steel plates. 8. The operation method for an intermittently conveying cardboard mechanism according to claim 1, wherein an adjustment screw is provided on the baffle, the adjustment screw is threadedly connected with the baffle, and the adjustment screw is used for Adjust the distance between the baffle and the endless conveyor belt.

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