A paperboard positioning and transport apparatus for carton production

Abstract

The application relates to the field of carton production automation equipment, and discloses a paperboard positioning and conveying device for carton production, which comprises a movable rack, a conveying mechanism symmetrically arranged on the top of the movable rack, the conveying mechanism being used for carrying and conveying paperboards, a suction mechanism arranged on the conveying mechanism, the suction mechanism being used for fixing the paperboards through negative pressure suction, and a gas control structure communicated with the bottom of the suction mechanism. The paperboards are fixed through suction by the suction mechanism, and the visual detection mechanism and the differential adjustment mechanism are simultaneously used, the visual detection mechanism captures paperboard position offset information in real time, the differential adjustment mechanism adjusts the speed and direction of the friction belts on the two sides through a servo motor, the speed difference between the two groups of belt bodies drives the paperboards to slightly deflect, accurate positioning and deviation correction are realized, the positioning process does not need the paperboards to collide with hard components, and therefore the problems of edge crushing and fluffing are avoided, and the integrity of the paperboards is effectively protected.

Description

Technical Field

[0001] This invention relates to the field of automated equipment technology for cardboard box production, specifically to a cardboard positioning and transporting device for cardboard box production. Background Technology

[0002] On automated carton production lines, after the cardboard has undergone printing, die-cutting and other preliminary processes, it usually needs to be conveyed to the next stage (such as a gluing machine or a nailing machine). In order to ensure the accuracy of subsequent processing, the cardboard needs to be positioned and corrected before processing.

[0003] Traditional positioning methods often use mechanical pull gauges, side gauges, or baffles for positioning. They utilize the inertia of the cardboard during transport to make its edges collide with the baffles to define the position. However, this hard positioning has obvious defects. When the cardboard impacts the baffles at high speed, the edges are easily squeezed, resulting in crushing, fuzzing, or even deformation of the cardboard, which directly affects the quality of the carton forming.

[0004] Meanwhile, rigid positioning relies on the inertia of the cardboard, which is not adaptable to cardboard of different weights and sizes. Thin cardboard is easily deformed due to excessive impact, while thick cardboard may not be able to fit the stop due to insufficient inertia, making it difficult to guarantee positioning accuracy. In addition, traditional positioning lacks the ability to dynamically correct cardboard offset, and cannot cope with small deviations in the conveying process, which further increases the scrap rate of subsequent processes.

[0005] Therefore, there is an urgent need to propose a cardboard positioning and transportation device that can achieve flexible positioning and has high-precision correction function to solve the problems mentioned above. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a cardboard positioning and transport device for carton production, which solves the problem of cardboard edge fuzzing and deformation caused by hard positioning, thus affecting the quality of the finished product.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cardboard positioning and transporting device for carton production, comprising a mobile frame, a transporting mechanism symmetrically mounted on the top of the mobile frame, the transporting mechanism being used to carry and transport cardboard, an adsorption mechanism being provided on the transporting mechanism, the adsorption mechanism being used to adsorb and fix the cardboard by negative pressure, a gas control structure being connected to the bottom of the adsorption mechanism, a vacuum track being provided below the gas control structure, and the gas control structure being slidably disposed within the vacuum track;

[0008] The vacuum track includes a raised strip that extends along the length of the vacuum track. The gas control structure includes a movable column with a roller at the bottom that can roll into contact with the raised strip. When the adsorption mechanism moves above the raised strip with the transport mechanism, the raised strip drives the movable column to move upward through the lifting roller to change the on / off state of the gas passage inside the adsorption mechanism, thereby adjusting the adsorption intensity on the cardboard.

[0009] The top of the mobile frame is equipped with a vision inspection mechanism and a differential speed adjustment mechanism. The vision inspection mechanism is used to detect the positional offset information of the cardboard, and the differential speed adjustment mechanism corrects and positions the cardboard according to the positional offset information.

[0010] Preferably, the adsorption mechanism includes a base and a panel mounted on top of the base, the panel having an installation hole inside, and a one-way valve being installed in the installation hole;

[0011] The one-way valve includes a telescopic spring, a steel ball, a sealing ring, and a breathable membrane. The telescopic spring is disposed inside the mounting hole, and the top of the telescopic spring abuts against the steel ball. The steel ball is used to seal or open the airflow channel of the mounting hole under negative pressure. The sealing ring is fixedly connected inside the mounting hole for sealing cooperation with the steel ball. The breathable membrane is fixedly connected to the top of the mounting hole for blocking the steel ball. The top of the panel is covered with a sponge layer, and the bottom of the base is connected to a moving part for moving it.

[0012] Preferably, the air control structure further includes an installation bend, a fixing pipe, an air hole, and a tension spring. The installation bend is threaded inside the base, and the fixing pipe is fixed to the bottom end of the installation bend.

[0013] The fixed tube is equipped with a limiting plate inside, the movable column is slidably disposed inside the limiting plate, a sealing ball is fixedly connected to the top of the movable column, and a sealing gasket is fixedly connected to the inner wall of the top of the fixed tube for sealing cooperation with the sealing ball to close the airflow channel. One end of the tension spring is connected to the sealing ball, and the other end is connected to the limiting plate.

[0014] Preferably, the vacuum track further includes an annular channel steel and a pressure bar. The top of the annular channel steel is symmetrically provided with sealing parts, and sliding parts are slidably provided between the sealing parts. The pressure bar is filled and provided inside the sealing parts to increase the sealing performance between the sealing parts and the sliding parts.

[0015] The fixed tube is fixedly connected to the outside of the sliding part, and the sliding part has a through hole at the position corresponding to the fixed tube. The roller is rotatably installed at the bottom of the moving column and is rolled inside the annular channel steel.

[0016] The protruding strip is fixed to the inner bottom wall of the annular channel steel. The two sides of the protruding strip are set as a gentle slope structure. When the roller rolls along the gentle slope to the top of the protruding strip, it drives the moving column to move upward, so that the sealing ball approaches or seals the air hole, thereby weakening the adsorption intensity of the adsorption mechanism.

[0017] Preferably, the transport mechanism includes a drive motor, a spline shaft, a spline bushing, a gear, a chain, and a guide rail frame. The drive motor is fixedly installed on one side of the movable frame. The spline shaft is connected to the drive motor through a coupling. The spline bushing is sleeved on the outside of the spline shaft. The gear is fixed to the outer wall of the spline bushing.

[0018] The chain meshes with the gears on both sides, and the guide rail frame is mounted on the outer wall of the spline bushing and fixed to one side of the vacuum track via bearings;

[0019] The moving parts of the adsorption mechanism include a moving plate, a pulley, and a mounting plate. The pulley is rotatably mounted on one side of the moving plate, and the moving plate is fixed to the chain by the mounting plate. The pulley slides along the guide rail.

[0020] Preferably, the differential adjustment mechanism includes a servo motor, a roller, a first friction belt, a fixed plate, and a second friction belt. The servo motor drives the roller to rotate. The first friction belt and the second friction belt are respectively sleeved on the corresponding roller. The roller is rotatably mounted on one side of the fixed plate, and the fixed plate is fixedly mounted on one side of the vacuum track.

[0021] The friction belt one and friction belt two are arranged vertically and vertically, and a correction channel for the paperboard to pass through is formed between them. Multiple rollers, a single friction belt one and a single friction belt two constitute a set of belts, and the two sets of belts are respectively installed on both sides of the two vacuum tracks.

[0022] The servo motor can adjust the moving speed and direction of the friction belt to drive the cardboard to deflect through the speed difference or direction difference between the two sets of belts.

[0023] Preferably, a feeding mechanism is also installed on one side of the mobile frame. The feeding mechanism includes a synchronous push rod, a telescopic sleeve, a support plate, and a baffle. The synchronous push rod is fixedly installed on the top of the mobile frame, and the telescopic sleeve is telescopically installed between the mobile frame and the support plate.

[0024] The baffle is mounted on the top of the movable frame. The support plate has a T-shaped structure. A sensor for detecting the presence or absence of cardboard is installed on one side of the bottom of the support plate. When the synchronous push rod moves the support plate down to the bottom, a thickness gap of a single cardboard is reserved between the baffle and the support plate to cooperate with the adsorption mechanism to separate and adsorb a single cardboard.

[0025] Preferably, a width adjustment mechanism is installed on the inner bottom side of the mobile frame. The width adjustment mechanism includes a bidirectional lead screw and a limiting rod. The transport mechanism, adsorption mechanism, gas control structure, vacuum track and differential speed adjustment mechanism are all installed on the bidirectional lead screw through a movable frame plate. The movable frame plate is also slidably disposed outside the limiting rod.

[0026] The bidirectional lead screw is rotatably connected to the bottom of the movable frame and is used to drive the movable frame plates on both sides to move towards or away from each other, so as to adjust the distance between the two sets of adsorption mechanisms according to the width of the cardboard.

[0027] Preferably, a pressure stabilizing tank is connected to one side of the vacuum track via a pipe, and a fan is installed at the outlet of the pressure stabilizing tank. The outlet of the pressure stabilizing tank is connected to the air inlet of the fan via a pipe, and the air inlet of the pressure stabilizing tank is connected to the interior of the vacuum track via a pipe. Both the pressure stabilizing tank and the fan are fixedly installed on one side of the mobile frame. A vacuum switch is provided at the outlet of the pressure stabilizing tank to control the start and stop of the fan according to the internal air pressure of the pressure stabilizing tank.

[0028] The convex strips are arranged in multiple segments along the length of the vacuum track to form a strong adsorption moving zone, a weak adsorption adjusting zone, a strong adsorption fixing zone, and a weak adsorption unloading zone.

[0029] Preferably, when no cardboard is placed on top of the sponge layer, the inside of the base is evacuated, causing the steel ball to move downwards under suction and cooperate with the sealing ring to seal and block the airflow channel of the mounting hole;

[0030] When the cardboard is placed on top of the sponge layer, the cardboard blocks the airflow channel at the top of the mounting hole, causing the air pressure at the bottom and top of the steel ball to be the same. The telescopic spring elastically resets and pushes the steel ball upward to open the mounting hole, so that the cardboard is adsorbed on top of the sponge layer.

[0031] Working principle: When the equipment is running, the cardboard is conveyed to the conveying mechanism through the feeding mechanism. The vision detection mechanism captures the position of the cardboard in real time and feeds back the signal. The differential speed adjustment mechanism on both sides of the conveying mechanism adjusts the speed difference of the friction belts on both sides independently through the servo motor according to the feedback signal, causing the cardboard to deflect slightly to complete the precise correction. At the same time, the adsorption mechanism adsorbs the cardboard through the negative pressure provided by the vacuum track. The cooperation of the convex strip and the air control structure realizes the zone adsorption force control, ensuring that the cardboard can be flexibly adjusted while being conveyed stably. Finally, the positioned cardboard is conveyed to the next process.

[0032] This invention provides a cardboard positioning and conveying device for cardboard box production. It has the following advantages:

[0033] 1. This invention uses an adsorption mechanism to fix the cardboard, and works in conjunction with a vision inspection mechanism and a differential speed adjustment mechanism. The vision inspection mechanism captures the cardboard's positional offset information in real time, while the differential speed adjustment mechanism adjusts the speed and direction of the friction belts on both sides via a servo motor. The speed difference between the two sets of belts causes the cardboard to deflect slightly, achieving precise positioning and correction. This eliminates the need for the cardboard to collide with hard parts during the positioning process, thus avoiding problems such as edge crushing and fuzzing, effectively protecting the integrity of the cardboard, ensuring the pass rate of the finished carton, and increasing the usability of the cardboard positioning and transportation equipment.

[0034] 2. This invention replaces the traditional flexible air pipe connection by setting a vacuum track structure in which an annular channel steel cooperates with the sliding part. This vacuum track serves as both a guide track for the conveying mechanism and a negative pressure air passage, thereby saving internal space of the equipment and making the structure more compact. In addition, the setting of pressure strips increases the sealing effect between the sliding part and the annular channel steel. At the same time, the use of a pressure stabilizing tank ensures the stability of air pressure during long-distance movement of the adsorption mechanism, ensuring the stability of the adsorption structure and ensuring the positioning and transportation efficiency of the cardboard.

[0035] 3. This invention achieves zoned automatic control of adsorption intensity by cooperating with the convex strips in the vacuum track and the gas control structure. In the conveying section, the adsorption mechanism provides a stable negative pressure to ensure that the cardboard is conveyed at high speed without deviation. In the correction section, the convex strips lift the moving column of the gas control structure, weakening the adsorption force and making the cardboard movable, which facilitates the differential speed adjustment mechanism to accurately correct the deviation. This dynamic adsorption control not only ensures the stability of the conveying process but also provides operating space for flexible positioning, significantly improving the positioning accuracy of the cardboard positioning and transportation equipment.

[0036] 4. This invention uses a bidirectional lead screw to synchronously adjust the spacing between the two-sided transport mechanism, adsorption mechanism, and differential speed adjustment mechanism, which can adapt to cardboard of different widths. During the adjustment process, the splined bushing inside the transport mechanism and vacuum track moves on the splined shaft, thereby driving all structures to move simultaneously. There is no need to readjust the adsorption parameters. It can be used immediately after adjustment, shortening the changeover time and improving the versatility and production efficiency of the cardboard positioning and transport equipment. Attached Figure Description

[0037] Figure 1 This is a perspective view of the present invention;

[0038] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the transportation mechanism of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of the gas control structure of the present invention;

[0041] Figure 5 This is a side view of the present invention;

[0042] Figure 6 This is a schematic diagram of the feeding mechanism of the present invention;

[0043] Figure 7 This is a side view of the transportation mechanism of the present invention;

[0044] Figure 8 This is a side view of the vacuum track of the present invention;

[0045] Figure 9 This is a schematic diagram of the internal structure of the adsorption mechanism of the present invention;

[0046] Figure 10 For the present invention Figure 1 Enlarged view of point A;

[0047] Figure 11 For the present invention Figure 2 Enlarged view of point A;

[0048] Figure 12 For the present invention Figure 2 Enlarged view of point B;

[0049] Figure 13 For the present invention Figure 4 Enlarged view of point A;

[0050] Figure 14 For the present invention Figure 8 Enlarged view of point A;

[0051] Figure 15 For the present invention Figure 8 Enlarged view of point B;

[0052] Figure 16 For the present invention Figure 9 Enlarged view of point A;

[0053] Figure 17 For the present invention Figure 15 Enlarged diagram of point C.

[0054] Among them, 1. Mobile frame; 2. Transport mechanism; 21. Drive motor; 22. Splined shaft; 23. Splined bushing; 24. Gear; 25. Chain; 26. Guide rail frame; 3. Adsorption mechanism; 31. Base; 32. Panel; 33. Mounting hole; 34. One-way valve; 341. Telescopic spring; 342. Steel ball; 343. Sealing ring; 344. Breathable membrane; 35. Sponge layer; 36. Moving parts; 361. Moving plate; 362. Pulley; 363. Mounting plate; 4. Air control structure; 41. Mounting bend; 42. Fixed pipe; 43. Air hole; 4 4. Sealing gasket; 45. Limiting plate; 46. Moving column; 47. Roller; 48. Sealing ball; 49. Tension spring; 5. Vacuum track; 51. Annular channel steel; 52. Sealing part; 53. Sliding part; 54. Pressure strip; 55. Raised strip; 6. Differential speed adjustment mechanism; 61. Servo motor; 62. Roller; 63. Friction belt one; 64. Fixing plate; 65. Friction belt two; 7. Vision inspection mechanism; 8. Feeding mechanism; 81. Synchronous push rod; 82. Telescopic sleeve; 83. Support plate; 84. Baffle; 9. Width adjustment mechanism; 10. Pressure stabilizing tank; 11. Fan. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Please see the appendix Figure 1-17 This invention provides a cardboard positioning and transport device for carton production, including a movable frame 1. A transport mechanism 2 is symmetrically mounted on the top of the movable frame 1. The transport mechanism 2 carries and transports cardboard. An adsorption mechanism 3 is provided on the transport mechanism 2. The adsorption mechanism 3 is used to adsorb and fix the cardboard through negative pressure. A gas control structure 4 is connected to the bottom of the adsorption mechanism 3. A vacuum track 5 is provided below the gas control structure 4. The gas control structure 4 is slidably disposed within the vacuum track 5. The vacuum track 5 includes ribs 55 that extend along the length of the vacuum track 5. The structure 4 includes a movable column 46, the bottom of which is provided with a roller 47 that can roll into contact with the protrusion 55. When the adsorption mechanism 3 moves above the protrusion 55 with the transport mechanism 2, the protrusion 55 drives the movable column 46 to move upward through the lifting roller 47, thereby changing the air passage opening and closing state inside the adsorption mechanism 3 and adjusting the adsorption intensity on the cardboard. The top of the movable frame 1 is equipped with a vision detection mechanism 7 and a differential speed adjustment mechanism 6. The vision detection mechanism 7 is used to detect the position offset information of the cardboard, and the differential speed adjustment mechanism 6 corrects and positions the cardboard according to the position offset information.

[0057] Please see the appendix Figure 1-7 and attached Figure 11 The vacuum track 5 also includes an annular channel steel 51 and a pressure bar 54. The top of the annular channel steel 51 is symmetrically provided with sealing parts 52, and sliding parts 53 are slidably provided between the sealing parts 52. The pressure bar 54 is filled and provided inside the sealing parts 52 to increase the sealing between the sealing parts 52 and the sliding parts 53. The fixed tube 42 is fixedly connected to the outside of the sliding parts 53, and the sliding parts 53 are provided with through holes corresponding to the position of the fixed tube 42. The roller 47 is rotatably installed at the bottom of the moving column 46 and is rolled inside the annular channel steel 51. Since the air pressure inside the vacuum track 5 is constant, the adsorption force is weakened by the throttling effect of the gas control structure 4.

[0058] The protruding strip 55 is fixed to the inner bottom wall of the annular channel steel 51. The two sides of the protruding strip 55 are set as a gentle slope structure. When the roller 47 rolls along the gentle slope to the top of the protruding strip 55, the driving moving column 46 moves upward, so that the sealing ball 48 approaches or seals the air hole 43, thereby weakening the adsorption intensity of the adsorption mechanism 3. The transport mechanism 2 includes a drive motor 21, a spline shaft 22, a spline bushing 23, a gear 24, a chain 25 and a guide rail frame 26. The drive motor 21 is fixedly installed on one side of the movable frame 1. The spline shaft 22 is connected to the drive motor 21 through a coupling. The spline bushing 23 is sleeved on the outside of the spline shaft 22. The gear 24 is fixed on the outer wall of the spline bushing 23. The chain 25 meshes and connects the two sides. The gear 24 and guide rail frame 26 are mounted on the outer wall of spline bushing 23 and fixed on one side of vacuum track 5 via bearings. The moving part 36 of adsorption mechanism 3 includes moving plate 361, pulley 362 and mounting plate 363. The pulley 362 is rotatably mounted on one side of moving plate 361. Moving plate 361 is fixed on chain 25 via mounting plate 363. The pulley 362 slides along guide rail frame 26. A feeding mechanism 8 is also installed on one side of the mobile frame 1. The feeding mechanism 8 includes synchronous push rod 81, telescopic sleeve 82, support plate 83 and baffle 84. Synchronous push rod 81 is fixedly mounted on the top of mobile frame 1. Telescopic sleeve 82 is telescopically mounted between mobile frame 1 and support plate 83.

[0059] A baffle 84 is mounted on top of the movable frame 1. The support plate 83 has a T-shaped structure. A sensor for detecting the presence or absence of cardboard is installed on one side of the bottom of the support plate 83. When the synchronous push rod 81 moves the support plate 83 to the bottom, a gap equal to the thickness of a single cardboard is reserved between the baffle 84 and the support plate 83 to cooperate with the adsorption mechanism 3 to separate and adsorb a single cardboard. A pressure stabilizing tank 10 is connected to one side of the vacuum track 5 through a pipe, and a fan 11 is installed at the outlet of the pressure stabilizing tank 10. The pressure tank 10 is connected to the air inlet of the blower 11 through a pipe, and the air inlet of the pressure tank 10 is connected to the interior of the vacuum track 5 through a pipe. The pressure tank 10 and the blower 11 are both fixedly installed on one side of the mobile frame 1. The air outlet of the pressure tank 10 is equipped with a vacuum switch, which is used to control the start and stop of the blower 11 according to the air pressure inside the pressure tank 10. The convex strip 55 is arranged in multiple segments along the length of the vacuum track 5 to form a strong adsorption moving zone, a weak adsorption adjustment zone, a strong adsorption fixed zone and a weak adsorption unloading zone.

[0060] Move this equipment to the side of the processing equipment requiring cardboard positioning, such as a bonding machine. Then, place the cardboard processed in the previous stage (such as in die-cutting or printing) on ​​top of the support plate 83. Start the equipment. In the initial state, the blower 11 evacuates the inside of the pressure tank 10 and continues to work to maintain negative pressure inside. Since the pressure tank 10 is connected to the annular channel steel 51 through a pipe, and the annular channel steel 51 is connected to the base 31 through the fixed pipe 42 and the mounting bend 41, the adsorption mechanism 3 generates adsorption strength. At the same time, the synchronous push rod 81 drives the support plate 83 to move the cardboard upward. The infrared sensor of the vision inspection mechanism 7 detects that there is no cardboard being adjusted inside the differential speed adjustment mechanism 6. At the same time, the sensor detects that there is no cardboard being bent at the bottom of the support plate 83. When mechanism 3 is activated, the synchronous push rod 81 moves the support plate 83 down to the bottom. At this time, the vertical distance between the baffle 84 and the support plate 83 is only one cardboard. Then, as the drive motor 21 drives the spline shaft 22, the spline bushing 23 drives the gear 24 to rotate, which in turn drives the adsorption mechanism 3 on one side to move through the chain 25. At this time, the adsorption mechanism 3 is at the notch of the T-shaped plate of the support plate 83, and the cardboard is pressed on the top of the sponge layer 35. After the synchronous push rod 81 moves down, the support plate 83 is pushed up immediately after the adsorption mechanism 3 takes out a cardboard, thereby separating the cardboard inside the support plate 83 from the adsorption mechanism 3. This prevents the adsorption mechanism 3 from continuously adsorbing and moving the cardboard, thus ensuring that no new cardboard will be moved into the differential speed adjustment mechanism 6 when there is cardboard inside.

[0061] Please see the appendix Figure 9 and attached Figure 16The adsorption mechanism 3 includes a base 31 and a panel 32 mounted on the top of the base 31. The panel 32 has an installation hole 33 inside, and a one-way valve 34 is installed inside the installation hole 33. The one-way valve 34 includes a telescopic spring 341, a steel ball 342, a sealing ring 343, and a breathable membrane 344. The telescopic spring 341 is located inside the installation hole 33, and the top of the telescopic spring 341 abuts against the steel ball 342. The steel ball 342 is used to seal or open the airflow channel of the installation hole 33 under negative pressure. The sealing ring 343 is fixedly connected inside the installation hole 33 for sealing with the steel ball 342. The breathable membrane 344 is fixedly connected to the top of the installation hole 33 for blocking the steel ball 342. A sponge layer 35 is laid on the top of the panel 32, and a moving part 36 for moving the base 31 is connected to the bottom of the base 31.

[0062] When the top of the mounting hole 33 is blocked by cardboard, the negative pressure at the bottom of the steel ball 342 disappears. Under the elastic force of the telescopic spring 341, the steel ball 342 bounces upward, opening the air passage. A negative pressure is formed inside the mounting hole 33 to adsorb the cardboard at the top. At the same time, as the chain 25 moves, the moving plate 361 drives the pulley 362 to slide on one side of the guide rail frame 26, which helps to drive the adsorption mechanism 3 to move the cardboard to the differential adjustment mechanism 6. When there is no cardboard at the top of the adsorption mechanism 3, the vacuum track 5 connected inside the base 31 generates negative pressure, adsorbing and moving the steel ball 342 downward, and then squeezing and sealing the steel ball 342 on the top of the sealing ring 343, thereby closing the valve of the mounting hole 33 and ensuring the negative pressure state inside the vacuum track 5.

[0063] Please see the appendix Figure 1 , 2 5, 10 and appendix Figure 12 The differential speed adjustment mechanism 6 includes a servo motor 61, a roller 62, a friction belt 63, a fixing plate 64, and a friction belt 65. The servo motor 61 drives the roller 62 to rotate. The friction belt 63 and the friction belt 65 are respectively fitted onto the corresponding roller 62. The roller 62 is rotatably mounted on one side of the fixing plate 64, and the fixing plate 64 is fixedly mounted on one side of the vacuum track 5. The friction belt 63 and the friction belt 65 are arranged vertically and vertically, and a correction channel for the paperboard to pass through is formed between them. Multiple rollers 62, a single friction belt 63, and a single friction belt 65 form a set of belts. The two sets of belts are respectively installed on both sides of the two vacuum tracks 5. The servo motor 61 can adjust the moving speed and direction of the friction belt 63 so as to drive the paperboard to deflect through the speed difference or direction difference between the two sets of belts.

[0064] Multiple infrared sensors are installed on one side of the camera of the vision inspection mechanism 7. When the cardboard is removed from the feeding mechanism 8, it will be detected by the infrared sensors, and then the camera will be controlled to take pictures and upload them. After the background calculation and comparison, the cardboard will be adjusted to the correct shape. The vision inspection mechanism 7 is connected to the servo motor 61 of the differential adjustment mechanism 6 through an electrical control structure. After the cardboard is photographed by the camera, the use of the servo motor 61 can be controlled. After the cardboard enters the differential adjustment mechanism 6, the servo motors 61 on both sides rotate in the corresponding direction according to the adjustment plan. For example, if the forward speed of the servo motor 61 on one side is greater than the moving speed of the suction mechanism 3, the cardboard on that side will be shifted forward to the other side. By adjusting the speed and forward and backward rotation of the servo motor 61, the position of the cardboard can be precisely adjusted.

[0065] Please see the appendix Figure 1 , 2 4, 5, 8, Appendix Figure 13-15 and attached Figure 17 The air control structure 4 also includes an installation bend 41, a fixed pipe 42, an air hole 43, and a tension spring 49. The installation bend 41 is threaded inside the base 31. The fixed pipe 42 is fixed to the bottom end of the installation bend 41. A limiting plate 45 is provided inside the fixed pipe 42. The moving column 46 is slidably disposed inside the limiting plate 45. A sealing ball 48 is fixedly connected to the top end of the moving column 46. A sealing gasket 44 is fixedly connected to the inner wall of the top end of the fixed pipe 42 for sealing and closing the airflow channel with the sealing ball 48. One end of the tension spring 49 is connected to the sealing ball 48, and the other end is connected to the limiting plate 45.

[0066] When the adsorption mechanism 3 moves to the differential speed adjustment mechanism 6 area, the roller 47 moves smoothly to the top of the protrusion 55 through the slope of the protrusion 55, thereby driving the moving column 46 to move the sealing ball 48 upward and close to the air hole 43, thereby weakening the adsorption intensity of the adsorption mechanism 3 and forming a weak adsorption area, which makes it convenient to adjust the cardboard through the differential speed adjustment mechanism 6. After the cardboard adjusted by the differential speed adjustment mechanism 6 is moved out of the differential speed adjustment mechanism 6, the adsorption mechanism 3 passes through the area without the protrusion 55, thereby forming a strong adsorption area, adsorbing and fixing the adjusted cardboard. The tail end of this equipment corresponds to the equipment of the next processing stage, such as the feeding area of ​​the bonding machine.

[0067] Because the annular channel steel 51 has a protruding strip 55 at its tail end, when the adsorption mechanism 3 passes the tail end of the equipment, the cardboard is loosened and enters the bonding machine through the conveying part for bonding. This positioning operation avoids the cardboard from directly entering the bonding machine and avoids the cardboard from directly colliding and breaking with the rigid pull gauge parts. Thus, the damage to the cardboard is reduced by flexible positioning, thereby improving the product qualification rate.

[0068] Please see the appendix Figure 1 , 4 and attached Figure 5The bottom inner side of the mobile frame 1 is equipped with a width adjustment mechanism 9, which includes a bidirectional lead screw and a limiting rod. The transport mechanism 2, adsorption mechanism 3, gas control structure 4, vacuum track 5 and differential speed adjustment mechanism 6 are all mounted on the bidirectional lead screw through a movable frame plate. The movable frame plate is also slidably set outside the limiting rod. The bidirectional lead screw is rotatably connected to the bottom of the mobile frame 1 and is used to drive the movable frame plates on both sides to move towards each other or away from each other, so as to adjust the distance between the two sets of adsorption mechanisms 3 according to the width of the cardboard.

[0069] When adjusting the positions of the two adsorption mechanisms 3 according to the width of the cardboard, the two bidirectional lead screws are rotated simultaneously, causing the moving frame to move towards each other under the limit of the limiting rod. The moving frame drives the top transport mechanism 2, adsorption mechanism 3, gas control structure 4, vacuum track 5, differential speed adjustment mechanism 6 and vision inspection mechanism 7 to move. During the movement, the vacuum track 5, guide rail 26 and gear 24 all move outside the spline shaft 22 through the spline bushing 23, thereby adjusting the positions of the two adsorption mechanisms 3 according to the width of the cardboard, thus improving the applicability of this equipment.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cardboard positioning and conveying device for carton production, comprising a movable frame (1), characterized in that, The top of the mobile frame (1) is symmetrically equipped with a transport mechanism (2), which is used to carry and transport cardboard. The transport mechanism (2) is equipped with an adsorption mechanism (3), which is used to fix the cardboard by adsorbing negative pressure. The bottom of the adsorption mechanism (3) is connected to a gas control structure (4), and a vacuum track (5) is provided below the gas control structure (4). The gas control structure (4) is slidably disposed in the vacuum track (5). The vacuum track (5) includes a rib (55) that extends along the length of the vacuum track (5). The gas control structure (4) includes a moving column (46). The bottom of the moving column (46) is provided with a roller (47) that can roll into contact with the rib (55). When the adsorption mechanism (3) moves above the rib (55) along with the transport mechanism (2), the rib (55) drives the moving column (46) to move upward through the lifting roller (47) to change the air passage opening and closing state inside the adsorption mechanism (3), thereby adjusting the adsorption intensity on the cardboard. The top of the mobile frame (1) is equipped with a vision inspection mechanism (7) and a differential speed adjustment mechanism (6). The vision inspection mechanism (7) is used to detect the position offset information of the cardboard, and the differential speed adjustment mechanism (6) corrects and positions the cardboard according to the position offset information.

2. The cardboard positioning and conveying equipment for carton production according to claim 1, characterized in that, The adsorption mechanism (3) includes a base (31) and a panel (32) installed on the top of the base (31). The panel (32) has an installation hole (33) inside, and a one-way valve (34) is installed in the installation hole (33). The one-way valve (34) includes a telescopic spring (341), a steel ball (342), a sealing ring (343), and a breathable membrane (344). The telescopic spring (341) is disposed inside the mounting hole (33), and the top of the telescopic spring (341) abuts against the steel ball (342). The steel ball (342) is used to seal or open the airflow channel of the mounting hole (33) under negative pressure. The sealing ring (343) is fixedly connected inside the mounting hole (33) for sealing cooperation with the steel ball (342). The breathable membrane (344) is fixedly connected to the top of the mounting hole (33) for blocking the steel ball (342). The top of the panel (32) is covered with a sponge layer (35), and the bottom of the base (31) is connected to a moving part (36) for moving it.

3. A cardboard positioning and transporting device for carton production according to claim 2, characterized in that, The air control structure (4) also includes an installation bend (41), a fixing pipe (42), an air hole (43) and a tension spring (49). The installation bend (41) is threaded inside the base (31), and the fixing pipe (42) is fixed to the bottom end of the installation bend (41). The fixed tube (42) is provided with a limiting plate (45) inside. The moving column (46) is slidably disposed in the limiting plate (45). A sealing ball (48) is fixedly connected to the top of the moving column (46). A sealing gasket (44) is fixedly connected to the inner wall of the top of the fixed tube (42) for sealing and cooperating with the sealing ball (48) to close the airflow channel. One end of the tension spring (49) is connected to the sealing ball (48), and the other end is connected to the limiting plate (45).

4. A cardboard positioning and transporting device for carton production according to claim 3, characterized in that, The vacuum track (5) also includes an annular channel steel (51) and a pressure bar (54). The top of the annular channel steel (51) is symmetrically provided with sealing parts (52), and sliding parts (53) are slidably provided between the sealing parts (52). The pressure bar (54) is filled and provided inside the sealing parts (52) to increase the sealing between the sealing parts (52) and the sliding parts (53). The fixed tube (42) is fixedly connected to the outside of the sliding part (53), and the sliding part (53) has a through hole at the position corresponding to the fixed tube (42). The roller (47) is rotatably installed at the bottom end of the moving column (46) and is rolled inside the annular channel steel (51). The protrusion (55) is fixed to the inner bottom wall of the annular channel steel (51). The two sides of the protrusion (55) are set as a gentle slope structure. When the roller (47) rolls along the gentle slope to the top of the protrusion (55), it drives the moving column (46) to move upward, so that the sealing ball (48) approaches or seals the air hole (43) to weaken the adsorption intensity of the adsorption mechanism (3).

5. A cardboard positioning and conveying device for carton production according to claim 2, characterized in that, The transport mechanism (2) includes a drive motor (21), a spline shaft (22), a spline bushing (23), a gear (24), a chain (25), and a guide rail frame (26). The drive motor (21) is fixedly installed on one side of the mobile frame (1). The spline shaft (22) is connected to the drive motor (21) through a coupling. The spline bushing (23) is sleeved on the outside of the spline shaft (22). The gear (24) is fixed on the outer wall of the spline bushing (23). The chain (25) meshes with the gears (24) on both sides, and the guide rail frame (26) is mounted on the outer wall of the spline bushing (23) and fixed to one side of the vacuum track (5) by bearings; The moving part (36) of the adsorption mechanism (3) includes a moving plate (361), a pulley (362) and a mounting plate (363). The pulley (362) is rotatably mounted on one side of the moving plate (361). The moving plate (361) is fixed on the chain (25) by the mounting plate (363). The pulley (362) slides along the guide rail frame (26).

6. A cardboard positioning and conveying device for carton production according to claim 1, characterized in that, The differential adjustment mechanism (6) includes a servo motor (61), a roller (62), a friction belt one (63), a fixing plate (64), and a friction belt two (65). The servo motor (61) drives the roller (62) to rotate. The friction belt one (63) and the friction belt two (65) are respectively sleeved on the corresponding roller (62). The roller (62) is rotatably mounted on one side of the fixing plate (64), and the fixing plate (64) is fixedly mounted on one side of the vacuum track (5). The friction belt one (63) and friction belt two (65) are arranged vertically and vertically, and a correction channel for the paperboard to pass through is formed between them. Multiple rollers (62), a single friction belt one (63) and a single friction belt two (65) form a set of belts. The two sets of belts are respectively installed on both sides of the two vacuum tracks (5). The servo motor (61) can adjust the moving speed and direction of the friction belt (63) so as to drive the cardboard to deflect through the speed difference or direction difference between the two sets of belts.

7. A cardboard positioning and conveying device for carton production according to claim 1, characterized in that, A feeding mechanism (8) is also installed on one side of the mobile frame (1). The feeding mechanism (8) includes a synchronous push rod (81), a telescopic sleeve (82), a support plate (83), and a baffle (84). The synchronous push rod (81) is fixedly installed on the top of the mobile frame (1), and the telescopic sleeve (82) is telescopically installed between the mobile frame (1) and the support plate (83). The baffle (84) is mounted on the top of the mobile frame (1). The support plate (83) has a T-shaped structure. A sensor for detecting the presence or absence of cardboard is installed on one side of the bottom of the support plate (83). When the synchronous push rod (81) moves the support plate (83) down to the bottom, a gap of the thickness of a single cardboard is reserved between the baffle (84) and the support plate (83) to cooperate with the adsorption mechanism (3) to separate and adsorb a single cardboard.

8. A cardboard positioning and conveying device for carton production according to claim 1, characterized in that, The bottom inner side of the mobile frame (1) is equipped with a width adjustment mechanism (9). The width adjustment mechanism (9) includes a bidirectional lead screw and a limiting rod. The transport mechanism (2), adsorption mechanism (3), gas control structure (4), vacuum track (5) and differential speed adjustment mechanism (6) are all installed on the bidirectional lead screw through a mobile frame plate. The mobile frame plate is also slidably arranged outside the limiting rod. The bidirectional lead screw is rotatably connected to the bottom of the movable frame (1) and is used to drive the movable frame plates on both sides to move towards or away from each other, so as to adjust the distance between the two sets of adsorption mechanisms (3) according to the width of the cardboard.

9. A cardboard positioning and transporting device for carton production according to claim 1, characterized in that, One side of the vacuum track (5) is connected to a pressure stabilizing tank (10) via a pipe, and a fan (11) is installed at the outlet of the pressure stabilizing tank (10). The outlet of the pressure stabilizing tank (10) is connected to the air inlet of the fan (11) via a pipe, and the air inlet of the pressure stabilizing tank (10) is connected to the interior of the vacuum track (5) via a pipe. The pressure stabilizing tank (10) and the fan (11) are both fixedly installed on one side of the mobile frame (1). A vacuum switch is provided at the outlet of the pressure stabilizing tank (10) to control the start and stop of the fan (11) according to the internal air pressure of the pressure stabilizing tank (10). The protrusions (55) are arranged in multiple segments along the length of the vacuum track (5) to form a strong adsorption moving zone, a weak adsorption adjusting zone, a strong adsorption fixing zone and a weak adsorption unloading zone.

10. A cardboard positioning and conveying device for carton production according to claim 2, characterized in that, When no cardboard is placed on top of the sponge layer (35), the inside of the base (31) is evacuated, causing the steel ball (342) to move downward under suction and cooperate with the sealing ring (343) to seal and block the airflow channel of the mounting hole (33); When the cardboard is placed on top of the sponge layer (35), the cardboard blocks the airflow channel at the top of the mounting hole (33), causing the air pressure at the bottom and top of the steel ball (342) to be the same. The telescopic spring (341) elastically resets and pushes the steel ball (342) upward to open the mounting hole (33), so that the cardboard is adsorbed on top of the sponge layer (35).

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