A bolt staggered stacking packaging device

Abstract

The present invention relates to the technical field of bolt packaging, and discloses a bolt staggered stacking packaging device, comprising a frame, a feeding mechanism, a material guiding mechanism and a carton conveying mechanism, wherein a guiding mechanism that can guide the head of the bolt to change its direction and enter the carton is arranged between the material guiding mechanism and the carton conveying mechanism; the carton conveying mechanism comprises a material receiving and conveying part and a carton input part and a carton output part located at both ends of the material receiving and conveying part; the material receiving and conveying part comprises a support plate, a double-belt conveyor and a first through slot arranged on the support plate at the interval between the double-belt conveyor, and a suction table that can be raised and lowered and can swing back and forth horizontally and linearly is arranged in the first through slot, the adsorption and desorption of the suction table are controlled by a second driving part, the raising and lowering of the suction table is controlled by a third driving part, and the horizontal linear reciprocating swing of the suction table is controlled by a fourth driving part. The device can effectively increase the number of bolts stacked per unit volume in the carton, thereby reducing packaging cost and packaging volume.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt packaging, and in particular to a bolt staggered stacking packaging device. Background Art

[0002] Bolts are a type of fastener consisting of a head and a screw, used to fasten and connect two parts with through holes. Bolts vary greatly in size depending on their usage scenarios.

[0003] Bolts are generally packaged in cartons or plastic bags. Carton packaging is suitable for all types of bolts, while plastic bag packaging is only suitable for small bolts. For plastic bag packaging, please refer to the Chinese patent application with application number 202310103324.7, which discloses a multi-station automatic packaging device for screws and nuts and its packaging method, including a frame, a packaging film conveying device, a feeding device, a hot pressing sealing device, a cutting device and a discharge conveyor belt. The feeding device includes a feeding unit, and the feeding unit includes a vibrating plate and a blanking chute. The principle is that the vibrating plate conveys the screw to the blanking chute, and the screw falls from the blanking chute into the packaging film, is sealed by the hot pressing sealing device, and is cut by the cutting device and falls onto the discharge conveyor belt.

[0004] For some large bolts with a length greater than 10 cm and a diameter greater than 1 cm, they are generally packaged in paper boxes. Since the diameter of the bolt head is larger than the diameter of the bolt, the existing automatic packaging method will cause the large heads of the bolts to be stacked or stacked in a disorderly manner. The paper box required to stack a specified number of bolts is large, resulting in low paper box space utilization and excessive packaging volume. Therefore, some manufacturers use manual paper box packaging, which has low packaging efficiency. Summary of the Invention

[0005] In view of the disadvantages of low box space utilization and excessively large packaging volume in the existing technology for packaging large bolts in paper boxes, the present invention provides a bolt staggered stacking and packaging device that can be used to stack large bolts and significantly improve the box space utilization.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A bolt staggered stacking and packaging device comprises a frame, a feeding mechanism, a material guiding mechanism and a carton conveying mechanism, wherein a guiding mechanism is provided between the material guiding mechanism and the carton conveying mechanism to guide the head of the bolt to change its direction and enter the carton;

[0008] The feeding mechanism can arrange multiple bolts and release them one by one to the guide mechanism with the heads facing upwards;

[0009] The material guiding mechanism can receive the bolts released by the material discharging mechanism and convey them into the guiding mechanism with their heads facing upwards;

[0010] The guiding mechanism includes two guide plates arranged obliquely and having a V-shaped cross section when connected, and a first driving portion capable of driving any guide plate toward or away from the other guide plate;

[0011] The carton conveying mechanism includes a material receiving and conveying portion for receiving the bolts released by the guiding mechanism, and a carton input portion and a carton output portion located at both ends of the material receiving and conveying portion;

[0012] Among them, the material receiving and conveying part includes a support plate horizontally fixed on the frame, a double-belt conveyor arranged in parallel and spaced relation on the support plate, and a first through slot arranged on the support plate at the interval between the double-belt conveyor. A suction table that can be raised and lowered and can swing back and forth horizontally and linearly is arranged in the first through slot. The adsorption and desorption of the suction table are controlled by the second driving part, the lifting and lowering of the suction table is controlled by the third driving part, and the horizontal linear reciprocating swing of the suction table is controlled by the fourth driving part. When the suction table descends to be flush with the support plate, the double-belt conveyor is partially located on the lower end surface of the paper box.

[0013] With the above scheme, a number of bolts are arranged on the feeding mechanism, which are released one by one through the feeding mechanism and enter the guide mechanism. The guide mechanism transmits the bolts to the guide mechanism. When any one of the two guide plates of the guide mechanism moves away, the head of the bolt will deviate toward the guide plate that moves away and fall into the paper box below. This is due to the deflection phenomenon caused by the weight of the bolt head end being greater than the weight of the screw end. By switching the moving guide plate, the direction of the bolt head can be changed. Therefore, staggered stacking of bolts can be achieved. The purpose of the paper box conveying mechanism is that the paper box input part conveys the paper box to the double-belt conveyor. When the paper box moves to the top of the suction table, the suction table first absorbs the paper box, and then absorbs the paper box. The material table rises, and the timing and frequency of switching the material guide plate can be controlled by the controller. After each layer of bolts is laid in the same direction, the material suction table swings horizontally to reduce the probability of incorrect stacking of bolts. Then, the material guide plate is switched to make the bolts reverse direction and arrange one layer. Then, the horizontal swinging process of the material suction table is repeated several times until the bolts are stacked to a specified height in the carton. Then, the material suction table descends, and the carton is pressed down on the double-belt conveyor. The double-belt conveyor starts and transports the carton to the carton output part, and is output by the carton output part. Finally, it is manually sealed to complete the packaging. The above structure can effectively increase the number of bolts stacked per unit volume in the carton, improve space utilization, reduce carton materials, and reduce packaging costs and packaging volume.

[0014] Preferably, the fourth driving unit includes a horizontal guide mechanism arranged between the support plate and the suction table and a connecting rod driving component that drives the suction table to move horizontally back and forth. As the lifting platform rises and falls, the support plate and the suction table are always in a horizontal guiding state.

[0015] With the above solution, the horizontal guide mechanism drives the suction table to perform only horizontal linear reciprocating motion when it moves horizontally, while the connecting rod driving component gives the suction table a driving force to perform horizontal linear reciprocating motion.

[0016] Preferably, the horizontal guiding mechanism includes movable guide rods symmetrically protruding on both sides of the suction table and guide grooves recessed on the side walls on both sides of the first through groove for horizontal guiding sliding of the movable guide rods. The height of the guide grooves is greater than or equal to the sum of the height of the movable guide rods plus the moving stroke of the movable guide rods.

[0017] By adopting the above solution, the height of the guide groove is set to be sufficient to drive the movable guide rod to rise and fall synchronously with the suction table, and the width of the guide groove is the width of the movable guide rod, so that when the movable guide rod moves horizontally, the guide groove can provide guidance for its movement.

[0018] Preferably, the connecting rod driving component includes a driving rod hingedly arranged on one side of the lifting platform, a first driving motor fixedly arranged horizontally below the support plate, and a driving disk fixed on the motor shaft of the first driving motor and arranged to rotate horizontally. A connecting shaft is eccentrically and vertically provided on the upper end surface of the driving disk. The end of the driving rod away from the lifting platform is sleeved on the connecting shaft. The driving rod can rotate along the circumference of the connecting shaft or move along the axial direction of the connecting shaft.

[0019] With the above solution, the driving rod is sleeved on the connecting shaft. Therefore, when the suction table is raised or lowered, the driving rod can move axially relative to the connecting shaft without getting stuck, ensuring that the connecting shaft always remains in an articulated state with the driving rod. When the first motor is started, the driving rod can move eccentrically on the driving disk and drive the suction table to achieve horizontal linear reciprocating motion.

[0020] Preferably, the third driving part includes a matching plate extending horizontally below the support plate on both sides of the suction table, a first cylinder fixedly arranged on both sides of the suction table below the support plate, and a clearance groove extending on the matching plate along the horizontal movement direction of the suction table. The end of the piston rod of the first cylinder passes through the clearance groove and a limit plate is protruded on the piston rod at the upper and lower ends of the clearance groove to limit the upward and downward movement of the piston rod relative to the matching plate.

[0021] By adopting the above solution, the piston rod can move along the give way groove, so that when the suction table performs horizontal linear reciprocating motion, the first cylinder can remain stationary relative to the support plate, and the first cylinder only provides driving force for the suction table to rise and fall.

[0022] Preferably, a second through slot is provided on the limiting plate, and a roller is rotatably provided in the second through slot and is in contact with the matching plate.

[0023] By adopting the above solution, the roller can improve the smoothness of the movement of the matching plate relative to the first cylinder, that is, the suction table can smoothly realize horizontal linear reciprocating motion.

[0024] Preferably, the second driving part includes a fixed platform fixedly arranged below the support plate, a number of first air grooves vertically penetrating the fixed platform evenly arranged on the fixed platform, and a piston member sealed and moved in the first air groove. A number of second air grooves vertically penetrating the suction platform are correspondingly arranged on the suction platform. A flexible air pipe is sealedly connected between the first air groove and the second air groove. The lower end of the piston member is synchronously connected to a driving plate. Second cylinders are symmetrically fixed on both sides of the fixed platform. The piston rod of the second cylinder is vertically downward and the end is fixedly connected to the driving plate.

[0025] By adopting the above scheme, a number of first air grooves and second air grooves are set up, a piston member is set in each first air groove, and all the piston members are connected to a driving plate. Each second air groove can realize independent adsorption or desorption only by driving the driving plate to move. The above setting can reduce the placement accuracy of the paper box on the suction table, and the adsorption of the paper box can be achieved without all the first air grooves being aligned with the bottom of the paper box. The function of the flexible air pipe is that the length of the flexible air pipe is greater than or equal to the distance between the suction table and the fixed table when the suction table rises to the maximum stroke, which can ensure the free movement of the suction table relative to the fixed table.

[0026] Preferably, the feeding mechanism includes two discharge plates fixed on the frame at a horizontal interval. The discharge plates are arranged to be tilted downward and have two discharge slopes with increasing slopes from top to bottom. There is a discharge gap between the discharge plates for the screw rod of the bolt to be inserted and the head of the limit bolt to sink. A third cylinder is provided at the bottom of the upper discharge slope opposite to the discharge gap, and a fourth cylinder is provided at the bottom of the upper discharge slope opposite to the upper discharge gap on one side of one of the discharge plates.

[0027] With the above solution, the bolts are arranged in sequence in the discharge gap. Due to the existence of the unloading slope, the bolts can slide downward naturally. The third cylinder and the fourth cylinder move alternately to release the bolts one by one and limit the remaining bolts.

[0028] Preferably, an adjustment mechanism that can change the discharge gap is provided on the discharge slope, and the adjustment mechanism includes an adjustment plate covering the discharge slope and having a slope consistent with the discharge slope, a waist-shaped groove opened on the adjustment plate along the discharge gap adjustment direction, and a locking bolt passing through the waist-shaped groove and plugging into the discharge slope, and a nut for locking the adjustment plate and the discharge slope is provided on the locking bolt.

[0029] By adopting the above scheme, the adjustment plate can change the width of the actual discharge gap by moving, thereby adapting to the arrangement of bolts of different sizes. By cooperating with the locking bolts and nuts, the adjustment plate can be limited on the discharge plate after adjustment, and the waist-shaped groove realizes the role of giving way and guiding.

[0030] Preferably, the material guiding mechanism includes a material guiding module fixed on the frame and arranged to be inclined downward from the end away from the feeding mechanism to the bottom of the feeding mechanism. A material guiding trough is provided on the material guiding module along its material guiding direction for driving the bolts to be transported along its inclined angle. The material guiding plate is located directly below the discharge plate, and the lower end of the material guiding module is located between the discharge plate and the material guiding plate.

[0031] With the above solution, the guide groove of the material guide module is used to directional conduct the bolts to prevent the bolts from deflecting during the conduction process. The arrangement of the material guide module, the discharge plate and the material guide plate can improve space utilization.

[0032] The present invention has significant technical effects due to the adoption of the above technical solutions: a number of bolts are arranged on the feeding mechanism, and are released one by one by the feeding mechanism and enter the material guiding mechanism, and the material guiding mechanism transmits the bolts to the guiding mechanism. When any one of the two material guiding plates of the guiding mechanism moves away, the head of the bolt will deviate toward the material guiding plate that moves away and fall into the paper box below. This is due to the deflection phenomenon caused by the weight of the bolt head end being greater than the weight of the screw end. By switching the moving material guiding plate, the direction of the bolt head can be changed, so staggered stacking of bolts can be achieved. The purpose of the paper box conveying mechanism is that the paper box input part conveys the paper box to the double-belt conveyor. When the paper box moves to the top of the suction table, the suction table First, the carton is sucked, and then the suction table rises. The timing and frequency of switching the guide plate can be controlled by the controller. After each layer of bolts is laid in the same direction, the suction table swings horizontally to reduce the probability of incorrect stacking of bolts. Then, the guide plate is switched to make the bolts reverse direction and arrange one layer. Then, the horizontal swinging process of the suction table is repeated several times until the bolts are stacked to a specified height in the carton. Then, the suction table descends, and the carton is pressed down on the double-belt conveyor. The double-belt conveyor starts and transports the carton to the carton output part, and is output by the carton output part. Finally, it is manually sealed to complete the packaging. The above structure can effectively increase the number of bolts stacked per unit volume in the carton, improve space utilization, reduce carton materials, and reduce packaging costs and packaging volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a front view of a bolt staggered stacking packaging device of this embodiment;

[0034] Figure 2-Figure 3 This is an axonometric view of a bolt staggered stacking and packaging device according to this embodiment;

[0035] Figure 4 yes Figure 3 A magnified view of A;

[0036] Figure 5 This is a right side view of a bolt staggered stacking packaging device of this embodiment;

[0037] Figure 6 yes Figure 5 AA cross-sectional view;

[0038] Figure 7 yes Figure 6 An enlarged view of B;

[0039] Figure 8 yes Figure 6 Cross-sectional view of BB;

[0040] Figure 9 yes Figure 8 Enlarged view of C;

[0041] Figure 10 It is an axonometric view of the suction table of this embodiment.

[0042] The parts indicated by the numbers in the above figures are as follows: 1. Frame; 2. Discharge plate; 201. Discharge slope; 3. Adjustment plate; 301. Waist groove; 302. Locking bolt; 4. Third cylinder; 5. Fourth cylinder; 6. Material guide module; 601. Material guide trough; 7. Suction table; 701. Matching plate; 7011. Give way groove; 702. Second air trough; 8. Flexible air pipe; 801. Elastic joint; 9. Fixing table; 901. First air trough; 10. Driving roller; 11. Second driving roller Motor; 12. Piston; 13. Drive plate; 14. Fifth cylinder; 15. Input conveyor belt; 16. Output conveyor belt; 17. Double-belt conveyor belt; 18. Guide plate; 19. Connecting plate; 20. Connecting bracket; 21. Moving guide rod; 22. First cylinder; 23. Limiting plate; 24. Second through slot; 25. Roller; 26. First drive motor; 27. Drive disk; 28. Connecting shaft; 29. ​​Drive rod; 30. Support plate; 31. First through slot; 32. Guide slot; 33. Second cylinder. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. Example

[0044] A bolt staggered stacking packaging device, referring to Figures 1-10 As shown, it includes a frame 1, on which a feeding mechanism, a material guiding mechanism, a guiding mechanism and a carton conveying mechanism are distributed from top to bottom.

[0045] Specific reference Figure 3-Figure 4As shown, the feeding mechanism includes two discharge plates 2 fixed on the frame 1 with a horizontal interval. The upper end surface of the discharge plate 2 is tilted downward and has two discharge slopes 201 with increasing slopes from top to bottom. There is a discharge gap between the discharge plates 2 for the screw rod of the bolt to be inserted and the head of the bolt is limited to sink. A third cylinder 4 is provided at the bottom of the upper discharge slope 201 opposite to the discharge gap, and a fourth cylinder 5 is provided on one side of one of the discharge plates 2 at the bottom of the upper discharge slope 201. Multiple bolts can be discharged at the discharge gap. The third cylinder 4 and the fourth cylinder 5 move in an alternating manner to release the bolts with their heads facing upward one by one and limit the remaining bolts.

[0046] In order to increase adaptability, an adjustment mechanism that can change the discharge gap is provided on the discharge slope 201. The adjustment mechanism includes an adjustment plate 3 covering the discharge slope 201 and having a slope consistent with the discharge slope 201, a waist-shaped groove 301 opened on the adjustment plate 3 along the discharge gap adjustment direction, and a locking bolt 302 passing through the waist-shaped groove 301 and plugged into the discharge slope 201. A nut is provided on the locking bolt 302 to lock the adjustment plate 3 and the discharge slope 201. The adjustment plate 3 can change the width of the actual discharge gap by moving, thereby adapting to the arrangement of bolts of different sizes.

[0047] Combine Figure 6 and Figure 8 As shown, the material guiding mechanism includes a material guiding module 6 fixed on the frame 1 and extending downward from one end away from the feeding mechanism to the bottom of the feeding mechanism. The material guiding module 6 is provided with a material guiding groove 601 for driving the bolts to be transported along its inclined angle. The material guiding plate 18 is located directly below the discharge plate 2, and the lower end of the material guiding module 6 is located between the discharge plate 2 and the guiding mechanism.

[0048] Guidance agency, reference Figure 8 As shown, it includes two guide plates 18 that are arranged obliquely and have a "V"-shaped cross-section after docking, and a first driving part. The first driving part is a fifth cylinder 14 connected to each guide plate 18. The fifth cylinder 14 is fixed on the frame 1. The upper end of the guide plate 18 is folded outward to have a vertically arranged connecting plate 19. The piston rod of the fifth cylinder 14 is fixedly connected to the connecting plate 19. The two fifth cylinders 14 can independently control one guide plate 18 to move, thereby realizing the movement of the guide plate 18 away from or against the other guide plate 18. When any one of the two guide plates 18 of the guiding mechanism moves away from each other, the head of the bolt will deflect and fall toward the direction of the guide plate 18 that is away from it. This is because the weight of the bolt head end is greater than the weight of the screw end, which causes the deflection phenomenon. By switching the moving guide plate 18, the direction of the bolt head can be changed.

[0049] Carton conveyor mechanism, see Figure 2 、 Figure 6 and Figure 8As shown, it includes a material receiving and conveying part located below the guide plate 18 for receiving the bolts released by the guide plate 18, and a carton input part and a carton output part located at both ends of the material receiving and conveying part, the carton input part is an input conveyor belt 15, the carton output part is an output conveyor belt 16, the material receiving and conveying part is a double-belt conveyor belt 17 arranged in parallel and spaced apart, the three groups of conveyor belts are matched with each other in end-to-end gaps, the three groups of conveyor belts are each tensioned and transmitted by two transmission rollers, and each is driven by a second drive motor 11, the second drive motor 11 is fixed on the frame 1 and is connected to one of the drive rollers 10 of each group of conveyor belts, the input conveyor belt 15 transmits the empty carton to the double-belt conveyor belt 17, the double-belt conveyor belt 17 transmits the carton to below the guide plate 18, and after the bolts are stacked, the carton is conveyed to the output conveyor belt 16, and is transmitted to the operator by the output conveyor belt 16.

[0050] In order to achieve the best possible layered and staggered stacking of bolts, combined with Figure 6 and Figure 8 As shown, a support plate 30 crossing the double-belt conveyor 17 is fixed on the frame 1, and a first through slot 31 is provided on the support plate 30 at the spacing between the double-belt conveyor, and a suction table 7 that can be raised and lowered and can swing back and forth horizontally and linearly is provided in the first through slot 31. The adsorption and desorption of the suction table 7 are controlled by the second drive unit, the lifting of the suction table 7 is controlled by the third drive unit, and the horizontal linear reciprocating swing of the suction table 7 is controlled by the fourth drive unit. When the suction table 7 descends to be flush with the support plate 30, the double-belt conveyor 17 is partially located at the lower end surface of the paper box. The lifting function of the suction table 7 is that after the suction table 7 rises, it can ensure that it is not interfered by the friction force of the double-belt conveyor 17 when swinging; after the suction table 7 drops, it can ensure that it is pressed down on the double-belt conveyor 17, and can be moved to the output conveyor 16 by the double-belt conveyor 17. The adsorption of the suction table 7 is used to fix the paper box and ensure that the paper box moves synchronously with the suction table 7. After the suction table 7 is desorbed, it can leave the suction table 7 and enter the output conveyor 16 under the conduction of the double-belt conveyor 17.

[0051] Combine Figure 6 、 Figures 8 to 10As shown, the second driving part includes a fixed platform 9 fixedly arranged below the support plate 30, and a connecting bracket 20 for fixing the fixed platform 9 is connected to the lower end of the support plate 30. A plurality of first air grooves 901 vertically penetrating the fixed platform 9 and a piston member 12 sealed and moving in the first air groove 901 are evenly arranged on the fixed platform 9. The lower end of the piston member 12 extends to the bottom of the fixed platform 9 and is synchronously connected to a driving plate 13. Second cylinders 33 are symmetrically fixed on both sides of the fixed platform 9. The piston rod of the second cylinder 33 is vertically downward and the end is fixedly connected to the driving plate 13. , a number of second air grooves 702 that vertically penetrate the suction platform 7 are correspondingly arranged on the suction platform 7, and a flexible air tube 8 is sealed between the first air groove 901 and the second air groove 702. The flexible air tube 8 is a silicone tube, and both ends of the silicone tube are hard inserts. An elastic joint 801 is elastically interfered with on the opposite side of the first air groove 901 and the second air groove 702, and the hard insert is elastically interfered with in the elastic joint 801. In order to ensure the sealing performance during adsorption, an elastic layer is fixed on the upper end surface of the suction platform 7, and the elastic layer has adsorption holes corresponding to the second air grooves 702.

[0052] Specific reference Figure 10 As shown, the third driving part includes a matching plate 701 horizontally extending below the support plate 30 on both sides of the suction table 7, a first cylinder 22 fixedly arranged on both sides of the suction table 7 below the support plate 30, and a giveway groove 7011 extending along the horizontal movement direction of the suction table 7 on the matching plate 701. The piston rod end of the first cylinder 22 passes through the giveway groove 7011 and a limit plate 23 is protruded at the upper and lower ends of the giveway groove 7011 on the piston rod to limit the piston rod to move up and down relative to the matching plate 701. Second through grooves 24 are symmetrically arranged on the limit plate 23 on both sides of the piston rod extending in the moving direction of the matching plate 701. A roller 25 that fits with the matching plate 701 is rotatably arranged in the second through groove 24. The function of the roller 25 can improve the smoothness of the movement of the matching plate 701 relative to the first cylinder 22, that is, the suction table 7 can smoothly realize horizontal linear reciprocating motion.

[0053] The fourth driving part includes a horizontal guide mechanism provided between the support plate 30 and the suction table 7 and a connecting rod driving component for driving the suction table 7 to move horizontally back and forth. Figure 6-7 As shown, the horizontal guide mechanism includes a movable guide rod 21 symmetrically protruded on both sides of the suction table 7 and a guide groove 32 recessed on both side walls of the first through groove 31 for the movable guide rod 21 to slide horizontally. The height of the guide groove 32 is greater than or equal to the sum of the height of the movable guide rod 21 and the moving stroke of the movable guide rod 21. Figure 10As shown, the connecting rod driving component includes a driving rod 29 hingedly arranged at the end of the matching plate 701 away from the suction table 7, a first driving motor 26 fixed horizontally on the connecting bracket 20, and a driving disk 27 fixed on the motor shaft of the first driving motor 26 and horizontally rotatable. A connecting shaft 28 is eccentrically vertically provided on the upper end surface of the driving disk 27, and the end of the driving rod 29 away from the lifting platform is sleeved on the connecting shaft 28. The driving rod 29 can rotate along the circumferential direction of the connecting shaft 28 or move along the axial direction of the connecting shaft 28.

[0054] The above-mentioned first cylinder 22, second cylinder 33, third cylinder 4, fourth cylinder 5, fifth cylinder 14, first drive motor 26 and second drive motor 11 are all connected to a PLC controller, and the switching timing of the above-mentioned cylinder solenoid valves, the starting and closing timing of the motors, the switching of the motor speeds and the switching of the forward and reverse rotation of the motors are all realized by the existing logic programming of the controller.

[0055] The process of packing using the above bolt staggered stacking packing device is as follows:

[0056] 1. Preparation stage: The third cylinder 4 is in the extended state; the fourth cylinder 5 is in the retracted state. Several bolts to be packaged are arranged in the discharge gap. The lowest bolt abuts against the piston rod end of the third cylinder 4. Empty cartons are placed on the input conveyor belt 15.

[0057] 2. Cartons in place: The input conveyor belt 15 transfers the empty cartons to the double-belt conveyor belt 17. After the double-belt conveyor belt 17 transfers an empty carton to the suction table 7, all three conveyor belts stop running.

[0058] 3. The suction table 7 absorbs the carton and lifts it: The piston rod of the second cylinder 33 extends, driving the suction table 7 to generate negative pressure to evenly absorb the bottom of the carton. The piston rod of the first cylinder 22 extends, driving the suction table 7 to rise and separate from the double-belt conveyor 17.

[0059] 4. Release the bolts one by one: The third cylinder 4 retracts, and the fourth cylinder 5 extends accordingly. The piston rod of the fourth cylinder 5 blocks the front of the second bolt. The first bolt slides down the discharge slope 201 and falls into the guide trough 601. Then, it follows the guide trough 601 and enters the guide plate 18. When the first bolt enters the discharge slope 201 below, the third cylinder 4 extends and the fourth cylinder 5 retracts. The bolts slide down one bolt as a whole, and the bottom bolt abuts against the piston rod end of the third cylinder 4 again.

[0060] 5. Bolts fall downward one by one: Based on the number of bolts that can be arranged on a single layer of a carton, assuming that 8 bolts can be arranged on a single layer in this embodiment, each group of guide plates is switched every 8 times. When one group of guide plates 18 is in a retracted state, the other group is always in a stationary state (the fifth cylinder 14 of this group is always in an extended state). When the fifth cylinder 14 controlling the moving guide plate 18 is in a retracted state, a bolt falls into the carton below with the large end facing the guide plate 18. After the bolt falls, the piston rod of the fifth cylinder 14 extends and resets.

[0061] 6. Repeat steps 4 and 5 eight times (the number of times is the same as the number of bolts that can be laid out on each layer);

[0062] 7. Horizontal linear reciprocating motion of the suction table 7: The first drive motor 26 is started, and the suction table 7 performs horizontal linear reciprocating motion in cooperation with the horizontal guide mechanism, the drive rod 29 and the drive plate 27. Its function is to make a layer of bolts as flat as possible and reduce the possibility of bolt stacking. The first drive motor 26 stops after 5 to 20 seconds of starting, and in this embodiment, it stops after 10 seconds;

[0063] 8. Repeat step 6. In this step, the original fifth cylinder 14 remains extended, and another fifth cylinder 14 is switched to perform telescopic movement to drive another guide plate 18, that is, to change the direction of deflection of the bolt head;

[0064] 9. Repeat step 7;

[0065] 10. Repeat steps 6 to 9, with the number of repetitions equal to the total number of bolt stacking layers / 2;

[0066] 11. The suction table 7 descends and desorbs the carton: the piston rod of the first cylinder 22 retracts, the suction table 7 descends, the carton presses against the double-belt conveyor 17, the piston rod of the second cylinder 33 retracts, and the suction table 7 switches from the negative pressure state to the normal pressure state;

[0067] 12. Discharging: The three conveyor belts are started simultaneously, and the cartons on the suction table 7 are transported to the output conveyor belt 16. When an empty carton conveyed from the input conveyor belt 15 enters the upper part of the suction table 7, the input conveyor belt 15 and the double-belt conveyor belt 17 are closed, and the output conveyor belt 16 can be closed at the same time or kept started. The state at this time is the same as step 1.

[0068] 13. Repeat steps 2 to 12.

[0069] The operator or the robot arm needs to regularly add bolts to the discharge gap, regularly add empty cartons to the input conveyor belt 15, and regularly perform the final capping and packaging on the cartons filled with bolts at the output conveyor belt 16.

[0070] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bolt staggered stacking packaging device, comprising a frame (1), a feeding mechanism, a material guiding mechanism and a carton conveying mechanism, characterized in that: A guiding mechanism is provided between the material guiding mechanism and the carton conveying mechanism, which can guide the head of the bolt to change its direction and enter the carton; The feeding mechanism can arrange multiple bolts and release them one by one to the guide mechanism with the heads facing upwards; The material guiding mechanism can receive the bolts released by the material discharging mechanism and convey them into the guiding mechanism with their heads facing upwards; The guiding mechanism comprises two guide plates (18) which are arranged obliquely and have a V-shaped cross section when connected, and a first driving part which can drive any guide plate (18) to approach or move away from another guide plate (18); The carton conveying mechanism includes a material receiving and conveying portion for receiving the bolts released by the guiding mechanism, and a carton input portion and a carton output portion located at both ends of the material receiving and conveying portion; The material receiving and conveying part comprises a support plate (30) fixed horizontally on the frame (1), a double-belt conveyor (17) arranged parallel and spaced apart on the support plate (30), and a first through slot (31) arranged on the support plate (30) at the interval between the double-belt conveyor (17). A suction table (7) which can be raised and lowered and can swing back and forth horizontally and linearly is arranged in the first through slot (31). The adsorption and desorption of the suction table (7) are controlled by a second driving part, the raising and lowering of the suction table (7) is controlled by a third driving part, and the horizontal linear reciprocating swing of the suction table (7) is controlled by a fourth driving part. When the suction table (7) is lowered to be flush with the support plate (30), the double-belt conveyor (17) is partially located at the lower end surface of the paper box.

2. The staggered bolt stacking and packaging device according to claim 1, characterized in that: The fourth driving unit includes a horizontal guide mechanism provided between the support plate (30) and the material suction platform (7) and a connecting rod driving component for driving the material suction platform (7) to move horizontally back and forth. As the lifting platform rises and falls, the support plate (30) and the material suction platform (7) are always in a horizontal guide state.

3. The staggered bolt stacking and packaging device according to claim 2, characterized in that: The horizontal guide mechanism comprises movable guide rods (21) symmetrically protruding on both sides of the material suction platform (7) and guide grooves (32) recessed on both side walls of the first through groove (31) for horizontally guiding and sliding the movable guide rods (21). The height of the guide grooves (32) is greater than or equal to the sum of the height of the movable guide rods (21) and the moving stroke of the movable guide rods (21).

4. The staggered bolt stacking and packaging device according to claim 2, characterized in that: The connecting rod driving component comprises a driving rod (29) hingedly arranged on one side of the lifting platform, a first driving motor (26) fixedly arranged horizontally below the support plate (30), and a driving disk (27) fixed on the motor shaft of the first driving motor (26) and arranged to rotate horizontally, a connecting shaft (28) is eccentrically and vertically arranged on the upper end surface of the driving disk (27), and the end of the driving rod (29) away from the lifting platform is sleeved on the connecting shaft (28), and the driving rod (29) can rotate along the circumference of the connecting shaft (28) or move along the axial direction of the connecting shaft (28).

5. The staggered bolt stacking and packaging device according to claim 4, characterized in that: The third driving part comprises a matching plate (701) horizontally extending below the support plate (30) on both sides of the suction platform (7), a first cylinder (22) fixedly arranged below the support plate (30) on both sides of the suction platform (7), and a clearance groove (7011) extending along the horizontal movement direction of the suction platform (7) on the matching plate (701), the end of the piston rod of the first cylinder (22) passes through the clearance groove (7011), and a limiting plate (23) is protruded on the piston rod at the upper and lower ends of the clearance groove (7011) to limit the piston rod from moving up and down relative to the matching plate (701).

6. The staggered bolt stacking and packaging device according to claim 5, characterized in that: A second through slot (24) is provided on the limiting plate (23), and a roller (25) is rotatably provided in the second through slot (24) and is in contact with the matching plate (701).

7. The staggered bolt stacking and packaging device according to claim 2, characterized in that: The second driving part comprises a fixed platform (9) fixedly arranged below the support plate (30), a plurality of first air grooves (901) uniformly arranged on the fixed platform (9) and vertically penetrating the fixed platform (9), and a piston member (12) sealed and moved in the first air groove (901); a plurality of second air grooves (702) vertically penetrating the suction platform (7) are correspondingly arranged on the suction platform (7); a flexible air pipe (8) is sealedly connected between the first air groove (901) and the second air groove (702); the lower end of the piston member (12) is synchronously connected to a driving plate (13); second cylinders (33) are symmetrically fixed on both sides of the fixed platform (9); the piston rod of the second cylinder (33) is vertically downward and the end thereof is fixedly connected to the driving plate (13).

8. The bolt staggered stacking and packaging device according to claim 1, characterized in that: The feeding mechanism comprises two discharge plates (2) fixed on a frame (1) at a horizontal interval. The discharge plates (2) are arranged to be tilted downward and have two discharge inclined surfaces (201) with increasing slopes from top to bottom. A discharge gap is provided between the discharge plates (2) for inserting a screw rod of a bolt and for limiting the sinking of the bolt head. A third cylinder (4) is provided at the bottom of the upper discharge inclined surface (201) facing the discharge gap. A fourth cylinder (5) is provided on one side of one of the discharge plates (2) facing the bottom of the upper discharge inclined surface (201).

9. The staggered bolt stacking and packaging device according to claim 8, characterized in that: An adjusting mechanism capable of changing the discharge gap is provided on the discharge inclined surface (201), the adjusting mechanism comprising an adjusting plate (3) covering the discharge inclined surface (201) and having a slope consistent with that of the discharge inclined surface (201), a waist-shaped groove (301) provided on the adjusting plate (3) along the discharge gap adjustment direction, and a locking bolt (302) passing through the waist-shaped groove (301) and plugged into the discharge inclined surface (201), and a nut for locking the adjusting plate (3) and the discharge inclined surface (201) is provided on the locking bolt (302).

10. The bolt staggered stacking and packaging device according to claim 8, characterized in that: The material guide mechanism comprises a material guide module (6) fixed on a frame (1) and arranged to be tilted downward from an end away from the feeding mechanism to below the feeding mechanism; a material guide trough (601) for driving a bolt to be transported along its tilt angle is arranged on the material guide module (6) along its material guide direction; a material guide plate (18) is located directly below the discharge plate (2); and a lower end of the material guide module (6) is located between the discharge plate (2) and the material guide plate (18).

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