Pallet transferring and conveying system

Abstract

The utility model discloses a pallet transferring and conveying system which comprises a stacking mechanism, a roller line extending in the longitudinal direction, a rack crossing the stacking mechanism and the roller line and a transferring device installed on the rack, the stacking mechanism comprises at least one stacking station, and each stacking station can contain a plurality of pallets stacked up and down; the roller line is used for conveying pallets in the longitudinal direction. The rack comprises a supporting guide rail which extends in the transverse direction and is located above the stacking mechanism and the roller line. The transferring device is used for transferring pallets on the stacking station to the roller line one by one. The transferring device comprises a transverse moving trolley arranged on the supporting guide rail in a striding mode, a transverse moving motor used for driving the transverse moving trolley to do reciprocating motion along the supporting guide rail, a lifting machine installed below the transverse moving trolley, a lifting hanging bracket capable of moving in the vertical direction and a grabbing assembly used for clamping pallets, and the transverse moving motor is installed on the transverse moving trolley. The hoister is used for driving the hoisting hanging bracket to do lifting motion in the vertical direction, and the grabbing assembly is installed on the hoisting hanging bracket.

Description

Technical Field

[0001] This application relates to the field of packaging equipment technology, and in particular to a pallet transfer and conveying system. Background Technology

[0002] In current packaging production lines, workers need to transport pallets to one side of the production line, then remove the pallets one by one, place the products on the pallets, and finally pack them to fix the products on the pallets. This process is time-consuming and labor-intensive, and due to manual operation, the packaging efficiency is low. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a time-saving, labor-saving, and highly efficient pallet transfer and conveying system.

[0004] To achieve the above objectives, this application adopts the following technical solution: a pallet transfer and conveying system, comprising:

[0005] A stacking mechanism includes at least one stacking station, each of the stacking stations being configured to accommodate a plurality of the stacked pallets stacked in a vertical direction.

[0006] A roller conveyor extends in the longitudinal direction and is arranged downstream of the stacking mechanism in a transverse direction perpendicular to the longitudinal direction. The roller conveyor is used to transport the pallet in the longitudinal direction.

[0007] A frame spanning the stacking mechanism and the roller conveyor, the frame including a support rail extending laterally above the stacking mechanism and the roller conveyor; and

[0008] A transfer device, mounted on the frame and used to transfer pallets from the stacking station to the roller conveyor one by one, includes a traverse trolley straddling the support guide rail, a traverse motor for driving the traverse trolley to reciprocate along the support guide rail, a hoist mounted below the traverse trolley, a lifting frame capable of moving vertically, and a gripping assembly for holding the pallets. The traverse motor is mounted on the traverse trolley, the lifting frame is connected to the hoist via a transmission mechanism, the hoist is used to drive the lifting frame to move vertically, and the gripping assembly is mounted on the lifting frame.

[0009] In the above technical solution, a further preferred embodiment is provided between the transverse motor and the support guide rail. The transmission assembly includes a rack mounted on the support guide rail and a gear connected to the transverse motor. The rack extends in the transverse direction, and the axis of the gear extends in the longitudinal direction. The transverse motor is used to drive the gear to rotate, and the gear meshes with the rack.

[0010] In the above technical solution, a further preferred embodiment is that the traverse trolley includes a traverse frame and multiple moving wheels. The traverse motor is fixedly installed on the top of the traverse frame. The multiple moving wheels are rotatably installed in pairs on the top of the traverse frame. Each pair of moving wheels is arranged opposite to each other in the longitudinal direction. The axis of each moving wheel extends in the longitudinal direction. The multiple moving wheels cooperate with the support guide rail.

[0011] In the above technical solution, a further preferred embodiment is that the hoist includes a hoisting frame, a hoisting motor, and a hoisting belt. The hoisting frame is fixedly installed below the transverse frame, the hoisting motor is installed on the hoisting frame, and the hoisting belt is connected between the hoisting motor and the hoisting hanger.

[0012] In the above technical solution, a further preferred embodiment is that the hoist also includes a pair of lifting guide frames arranged opposite each other, the pair of lifting guide frames being synchronously telescopically connected between the hoisting frame and the hoisting hanger.

[0013] In the above technical solution, a further preferred embodiment is that the gripping component includes at least two pairs of opposing grippers, each gripper being rotatably mounted on the lifting frame. Each pair of grippers has a gripping position where the lower ends are close to each other and an open position where the lower ends are far apart. Each gripper is equipped with a gripping cylinder, which drives the corresponding gripper to rotate between the gripping position and the open position.

[0014] In the above technical solution, a further preferred embodiment is that each of the grippers is equipped with a sensor, which is configured to be triggered when it comes into contact with the pallet. Each sensor is signal-connected to the corresponding gripping cylinder, and the gripping cylinder is configured to drive the corresponding gripper to rotate to the gripping position when the sensor is triggered.

[0015] In the above technical solution, more preferably, each of the stacking stations is further equipped with a pallet bracket. The pallet bracket includes a stacking frame with a notch on one side and a pair of door stop assemblies. The pair of door stop assemblies are disposed opposite to each other on both sides of the notch. Each door stop assembly includes a door stop plate rotatably mounted on the stacking frame and a rotating cylinder connected between the stacking frame and the door stop plate. The rotating cylinder is used to drive the door stop plate to rotate around a center line extending in the vertical direction to align the multiple pallets stacked in the stacking frame.

[0016] In the above technical solution, a further preferred embodiment is that the roller conveyor includes a plurality of roller conveyors arranged sequentially along the longitudinal direction. Each roller conveyor includes a connecting frame, a plurality of rollers, and a conveying motor. The plurality of rollers are installed at intervals on the connecting frame along the longitudinal direction. Each roller extends in the transverse direction and is able to rotate relative to the connecting frame around its own axis. The conveying motor is drivenly connected to the plurality of rollers to simultaneously drive the plurality of rollers to rotate.

[0017] In the above technical solution, it is further preferred that each of the roller conveyors is provided with a guide assembly extending in the longitudinal direction, the guide assembly including a pair of guide plates arranged opposite each other in the transverse direction, and at least a portion of each of the pallets extending into the pair of guide plates.

[0018] Compared with the prior art, this application achieves the following beneficial effects:

[0019] The pallet transfer and conveying system of this application is used to transfer stacked pallets one by one to the packaging production line, reducing the time and labor of manual handling, with a high degree of automation, saving time and effort, and improving production efficiency. Attached Figure Description

[0020] Figure 1 A front view of a pallet transfer and conveying system provided in an embodiment of this application;

[0021] Figure 2 for Figure 1 A top view of the pallet transfer and conveying system (excluding the transfer device and frame);

[0022] Figure 3 for Figure 1 Side view of the pallet transfer conveyor system (excluding roller conveyors);

[0023] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0024] Figure 5 for Figure 1Front view of the transfer device in the middle;

[0025] Figure 6 for Figure 5 Side view of the transfer device in the middle;

[0026] Figure 7 for Figure 5 A schematic diagram of the structure of the crawling component in the diagram;

[0027] Figure 8 for Figure 1 Front view of the pallet bracket in the middle;

[0028] Figure 9 for Figure 8 A top view of the pallet bracket in the middle;

[0029] Figure 10 for Figure 1 Front view of the roller conveyor in the middle;

[0030] Figure 11 for Figure 10 A top view of the roller conveyor in the image.

[0031] Among them: 100, pallet transfer and conveying system; 10, stacking mechanism; 4, pallet bracket; 41, stacking frame; 411, notch; 42, door stop assembly; 421, door stop plate; 422, rotary cylinder; 6, stacking station; 20, roller conveyor; 5, roller conveyor; 51, connecting frame; 52, roller; 53, conveyor motor; 54, guide assembly; 541, guide plate; 30, transfer device; 2, lateral movement mechanism; 21, lateral movement trolley; 211, lateral movement... Frame; 212, Moving wheels; 22, Transverse motor; 23, Transmission assembly; 231, Rack; 232, Gear; 3, Lifting mechanism; 31, Lifting machine; 311, Lifting frame; 312, Lifting motor; 313, Lifting belt; 314, Lifting guide frame; 3141, Connecting arm; 32, Lifting hanger; 33, Gripping assembly; 331, Gripper; 332, Gripping cylinder; 333, Sensor; 40, Frame; 1, Support rail; 200, Pallet. Detailed Implementation

[0032] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0033] The "lateral direction" mentioned in this application is an appendix. Figure 1 The front-back direction is shown; the "longitudinal direction" is an appendix. Figure 2 The left and right directions are shown.

[0034] like Figure 1 As shown, this application provides a pallet transfer and conveying system 100, including: a stacking mechanism 10 for temporarily storing pallets 200 stacked layer by layer, a roller conveyor 20 for longitudinally conveying pallets 200, and a transfer device 30 for transferring pallets 200 in the stacking mechanism 10 one by one onto the roller conveyor 20.

[0035] like Figure 1 , 2 As shown, the stacking mechanism 10 includes at least one stacking station 6. In this embodiment, the stacking mechanism 10 includes two stacking stations 6. The two stacking stations 6 are used to stack two different specifications of pallets. Each stacking station 6 is used to stack multiple pallets of the same specification in the vertical direction. The two stacking stations 6 are arranged at intervals in the front-back direction.

[0036] In this embodiment, the roller conveyor 20 is arranged along one side of the product conveyor line in a left-right direction. When the transfer device 30 transfers the pallet 200 onto the roller conveyor 20, the roller conveyor 20 transports the pallet 200 from right to left. The products on the product conveyor line are placed layer by layer onto the pallet 200 transported from right to left by the robotic arm. After the products are placed, they are wrapped with a packing film, thus completing the packaging on the roller conveyor 20. After the packaging is completed, the pallet 200 is removed from the roller conveyor 20 and transported away by a forklift.

[0037] In the front-to-back direction, the stacking mechanism 10 is located in front of the roller conveyor 20, and the product conveyor line is located behind the roller conveyor 20. The transfer of pallets 200 and products to the roller conveyor 20 does not interfere with each other.

[0038] The transfer device 30 is supported above the stacking mechanism 10 and the roller line 20 by a frame 40 spanning the stacking mechanism 10 and the roller line 20. The transfer device 30 moves back and forth on the frame 40 to move the pallets 200 in the stacking mechanism 10 onto the roller line 20 one by one.

[0039] The frame 40 includes a support rail 1 extending in the front-to-back direction, the support rail 1 being located above the stacking mechanism 10 and the roller line 20.

[0040] like Figure 3-6 As shown, the transfer device 30 includes a lateral movement mechanism 2 and a lifting mechanism 3. The lifting mechanism 3 is mounted on the lateral movement mechanism 2 and is used to grab the pallet 200 and move the pallet 200 in the vertical direction. The lateral movement mechanism 2 is used to drive the lifting mechanism 3 and the pallet 200 it grabs to move in the front-back direction.

[0041] The traversing mechanism 2 includes a traversing trolley 21 straddling a support guide rail 1, a traversing motor 22 for driving the traversing trolley 21 to reciprocate along the support guide rail 1, and a transmission assembly 23 connecting the traversing motor 22 and the support guide rail 1. The traversing trolley 21 includes a traversing frame 211 and multiple moving wheels 212. The traversing motor 22 is fixedly mounted on the top of the traversing frame 211. The multiple moving wheels 212 are rotatably mounted on the top of the traversing frame 211 in pairs. Each pair of moving wheels 212 is arranged opposite each other from left to right. The axis of each moving wheel 212 extends in the left-right direction. All the moving wheels 212 cooperate with the support guide rail 1 and can roll back and forth along the support guide rail 1 to reduce the friction between the traversing frame 211 and the support guide rail 1 during the movement, so that the transfer device 30 moves smoothly in the front-back direction. The transmission assembly 23 includes a rack 231 mounted on the support guide rail 1 and a gear 232 connected to the transverse motor 22. The rack 231 extends in the front-to-back direction, and the axis of the gear 232 extends in the left-to-right direction. The gear 232 meshes with the rack 231. The transverse motor 22 drives the gear 232 to rotate. When the gear 232 rotates, the tooth surface of the rack 231 meshing with the gear 232 pushes the gear 232 to roll in the front-to-back direction. The rolling gear 232 drives the transverse carriage 21 connected to the transverse motor 22 to move on the support guide rail 1. To reduce the wear of the gear 232 and the rack 231, the transmission assembly 23 includes two pairs of gears 232 and racks 231, which are arranged opposite each other. The transverse motor 22 simultaneously drives the two gears 232 to rotate, so that the two gears 232 rotate synchronously.

[0042] The lifting mechanism 3 includes a lifting machine 31 installed below the transverse trolley 21, a lifting frame 32 capable of moving in the vertical direction, and a gripping assembly 33 for holding the pallet 200. The lifting frame 32 is connected to the lifting machine 31 for transmission, and the lifting machine 31 is used to drive the lifting frame 32 to move up and down in the vertical direction. The gripping assembly 33 is installed on the lifting frame 32.

[0043] The hoist 31 includes a hoisting frame 311, a hoisting motor 312, and a hoisting belt 313. The hoisting frame 311 is fixedly installed below the transverse frame 211. The hoisting motor 312 is installed on the hoisting frame 311. The hoisting belt 313 is connected between the hoisting motor 312 and the hoisting hanger 32. The hoisting motor 312 winds up and unwinds the hoisting belt 313, thereby realizing the raising and lowering of the hoisting hanger 32.

[0044] The hoist 31 also includes a pair of opposing lifting guide frames 314. Each lifting guide frame 314 includes multiple cross-connected connecting arms 3141, and the folding and telescopic movement of the lifting guide frame 314 is achieved by rotating the multiple connecting arms 3141. The pair of lifting guide frames 314 are synchronously telescopically connected between the lifting frame 311 and the lifting hanger 32. The pair of lifting guide frames 314 are used to limit the direction of the lifting hanger 32 during the lifting process, to avoid excessive swaying of the lifting hanger 32 in the front-back and left-right directions, and to improve safety during the transfer process.

[0045] like Figure 7 As shown, the gripping assembly 33 includes at least two pairs of opposing grippers 331. Each gripper 331 is rotatably mounted on the lifting frame 32. Each pair of grippers 331 has a gripping position where the lower ends are close to each other and an open position where the lower ends are far apart. Each gripper 331 is equipped with a gripping cylinder 332, which drives the corresponding gripper 331 to rotate between the gripping position and the open position.

[0046] Each gripper 331 is equipped with a sensor 333. The sensor 333 is configured to be triggered when it comes into contact with the uppermost pallet 200 of the stacking station 6. Each sensor 333 is signal-connected to the corresponding gripping cylinder 332. The gripping cylinder 332 is configured to drive the corresponding gripper 331 to rotate to the gripping position when the sensor 333 is triggered, so as to grip the pallet 200.

[0047] like Figure 8 , 9As shown, each stacking station 6 is also equipped with a pallet holder 4. The pallet holder 4 includes a stacking frame 41 with a notch 411 on one side and a pair of door stop assemblies 42. The notch 411 allows a forklift to feed stacked pallets 200 into the stacking frame 41. The pair of door stop assemblies 42 are arranged opposite to each other on both sides of the notch 411. Each door stop assembly 42 includes a door stop plate 421 rotatably mounted on the stacking frame 41 and a rotary cylinder 422 connecting the stacking frame 41 and the door stop plate 421. The door stop plate 421 has a center line extending in the vertical direction. The rotary cylinder 422 is used to drive the door stop plate 421 to rotate around the center line. The door stop plate 421 at the notch 411 aligns the stacked pallets 200 vertically, making it easier for the transfer device 30 to grasp the pallets 200.

[0048] like Figure 2 , 10 As shown in Figure 11, the roller conveyor 20 includes multiple roller conveyors 5 arranged sequentially in the left-right direction. Each roller conveyor 5 includes a connecting frame 51, multiple rollers 52, and a conveyor motor 53. The multiple rollers 52 are installed at intervals on the connecting frame 51 in the left-right direction. Each roller 52 extends in the front-back direction and can rotate relative to the connecting frame 51 around its own axis. The conveyor motor 53 is driven by the multiple rollers 52 to drive the multiple rollers 52 to rotate simultaneously. Each roller conveyor 5 is provided with a guide assembly 54 extending in the left-right direction. The guide assembly 54 includes a pair of guide plates 541 arranged in a front-back opposite direction. The support foot in the middle of the bottom of each pallet 200 extends into the pair of guide plates 541. The guide assemblies 54 of the multiple roller conveyors 5 are connected sequentially in the left-right direction. During the conveying of the pallet 200 on the roller conveyor 20, the guide assembly 54 guides the movement of the pallet 200 and prevents the pallet 200 from falling off the roller conveyor 20.

[0049] The pallet transfer and conveying system 100 also includes a control system (not shown in the figure). The rotating cylinder 422 of the stacking mechanism 10, the multiple conveying motors 53 of the roller line 20, the transverse motor 22, the lifting motor 312, the gripping cylinder 332, and the sensing element 333 are all connected to the control system and centrally controlled by the control system. The pallet transfer and conveying system 100 realizes automated operation, eliminating manual operation and saving time and effort.

[0050] The working principle of this application is as follows: A forklift delivers multiple stacked pallets 200 of the same specification into the stacking frame 41 through the notch. The forklift then exits, and the door stop 421 of the door stop assembly 42 aligns with the multiple pallets 200. Under the control of the control system, the transfer device 30 moves above the stacking station 6. The hoist 31 drives the lifting frame 32 to move downward. When the sensor 333 contacts the uppermost pallet 200 in the stacking station 6, it is triggered and sends a signal to the corresponding gripping cylinder 332. Each gripping cylinder 332 controls the corresponding gripper 331 to rotate from the open position to the gripping position. Each pair of grippers 331 grips the opposite sides of the pallet 200. The hoist 31 lifts the lifting frame 32 and the gripped pallet 200. 0. After pallet 200 is removed from stacking station 6, the traverse trolley 21 moves backward to above the roller conveyor 20. The elevator 31 releases the lifting frame 32 downward, and the traverse trolley 21 adjusts its position in the front-to-back direction so that the middle support leg of pallet 200 aligns with the guide assembly 54 of roller conveyor 20. After pallet 200 falls onto roller conveyor 20, the grippers 331 open, the elevator 31 drives the lifting frame 32 to rise, and the traverse trolley 21 returns to above stacking station 6 to transfer the next pallet 200. The pallet 200, which falls onto roller conveyor 20, moves to the left under the conveying of multiple rollers 52. Products on the product conveyor line are stacked layer by layer onto pallet 200 by robotic arms, then packaged as a whole, and finally output from roller conveyor 20 and transported away by forklift.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A pallet transfer and conveying system, characterized in that, include: A stacking mechanism includes at least one stacking station, each of the stacking stations being configured to accommodate a plurality of the stacked pallets stacked in a vertical direction. A roller conveyor extends in the longitudinal direction and is arranged downstream of the stacking mechanism in a transverse direction perpendicular to the longitudinal direction. The roller conveyor is used to transport the pallet in the longitudinal direction. A frame spanning the stacking mechanism and the roller conveyor, the frame including a support rail extending in a lateral direction above the stacking mechanism and the roller conveyor. as well as A transfer device, mounted on the frame and used to transfer pallets from the stacking station to the roller conveyor one by one, includes a traverse trolley straddling the support guide rail, a traverse motor for driving the traverse trolley to reciprocate along the support guide rail, a hoist mounted below the traverse trolley, a lifting frame capable of moving vertically, and a gripping assembly for holding the pallets. The traverse motor is mounted on the traverse trolley, the lifting frame is connected to the hoist via a transmission mechanism, the hoist is used to drive the lifting frame to move vertically, and the gripping assembly is mounted on the lifting frame.

2. The pallet transfer and conveying system according to claim 1, characterized in that, A transmission assembly is provided between the transverse motor and the support guide rail. The transmission assembly includes a rack mounted on the support guide rail and a gear connected to the transverse motor. The rack extends in the transverse direction, and the axis of the gear extends in the longitudinal direction. The transverse motor drives the gear to rotate, and the gear meshes with the rack.

3. The pallet transfer and conveying system according to claim 2, characterized in that, The traverse trolley includes a traverse frame and multiple moving wheels. The traverse motor is fixedly installed on the top of the traverse frame. The multiple moving wheels are rotatably installed in pairs on the top of the traverse frame. Each pair of moving wheels is arranged opposite to each other in the longitudinal direction. The axis of each moving wheel extends in the longitudinal direction. The multiple moving wheels cooperate with the support guide rail.

4. The pallet transfer and conveying system according to claim 3, characterized in that, The hoist includes a hoisting frame, a hoisting motor, and a hoisting belt. The hoisting frame is fixedly installed below the transverse frame, the hoisting motor is installed on the hoisting frame, and the hoisting belt connects the hoisting motor and the hoisting hanger.

5. The pallet transfer and conveying system according to claim 4, characterized in that, The hoist also includes a pair of lifting guide frames arranged opposite each other, which are synchronously telescopically connected between the hoisting frame and the hoisting hanger.

6. The pallet transfer and conveying system according to claim 1, characterized in that, The gripping assembly includes at least two pairs of opposing grippers, each gripper being rotatably mounted on the lifting frame. Each pair of grippers has a gripping position where their lower ends are close to each other and an open position where their lower ends are far apart. Each gripper is equipped with a gripping cylinder, which drives the corresponding gripper to rotate between the gripping position and the open position.

7. The pallet transfer and conveying system according to claim 6, characterized in that, Each of the grippers is equipped with a sensor, which is configured to be triggered when it comes into contact with the pallet. Each sensor is signal-connected to a corresponding gripping cylinder, which is configured to drive the corresponding gripper to rotate to the gripping position when the sensor is triggered.

8. The pallet transfer and conveying system according to claim 1, characterized in that, Each of the aforementioned stacking stations is also equipped with a pallet holder, which includes a stacking frame with a notch on one side and a pair of door stop assemblies. The pair of door stop assemblies are disposed opposite to each other on both sides of the notch. Each of the aforementioned door stop assemblies includes a door stop plate rotatably mounted on the stacking frame and a rotary cylinder connected between the stacking frame and the door stop plate. The rotary cylinder is used to drive the door stop plate to rotate about a center line extending in the vertical direction to align multiple pallets stacked within the stacking frame.

9. The pallet transfer and conveying system according to claim 1, characterized in that, The roller conveyor includes multiple roller conveyors arranged sequentially along the longitudinal direction. Each roller conveyor includes a connecting frame, multiple rollers, and a conveyor motor. The multiple rollers are installed at intervals on the connecting frame along the longitudinal direction. Each roller extends in the transverse direction and is able to rotate about its own axis relative to the connecting frame. The conveyor motor is drivenly connected to the multiple rollers to simultaneously drive the multiple rollers to rotate.

10. The pallet transfer and conveying system according to claim 9, characterized in that, Each of the roller conveyors is provided with a guide assembly extending in the longitudinal direction, the guide assembly including a pair of guide plates arranged opposite each other in the transverse direction, and at least a portion of each of the pallets extending between the pair of guide plates.

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