Multi-channel automatic discharging device

Abstract

The invention relates to the technical field of automation, and discloses a multi-channel automatic discharging device which comprises a feeding opening formed in the ground and further comprises a material taking mechanism, the material taking mechanism comprises a fixing shaft and a gripper, the gripper is rotationally and vertically arranged on the fixing shaft in a sliding mode, the gripper comprises a mounting plate and two clamping jaws rotationally connected to the mounting plate, and the clamping jaws are arranged on the mounting plate. Air cylinders are connected between the clamping jaws and the mounting plate, and the air cylinders are rotationally connected with the mounting plate and the clamping jaws; a plurality of slotting tools are arranged at the ends, away from the mounting plate, of the two clamping jaws, and the slotting tools are sequentially arranged and distributed in the length direction of the clamping jaws; a feeding mechanism is arranged between the material taking mechanism and the feeding port and provided with a feeding port and a feeding pipe, the feeding pipe is provided with an outlet and an inlet, the inlet is connected with the feeding port, the outlet is connected with the feeding port, and the gripper can rotate on the fixing shaft and move to the position above the feeding port. The problems that time and labor are wasted when raw materials are manually moved, and continuous production and processing efficiency of products are affected can be solved.

Description

Technical Field

[0001] The invention relates to the field of automation technology, and in particular to a multi-channel automatic feeding device. Background Art

[0002] PVC pipe, the full name of which is polyvinyl chloride pipe, is a pipe that is extruded by hot pressing after polyvinyl chloride resin is mixed with stabilizers, lubricants, etc. It has been widely used in many fields due to its excellent corrosion resistance and cost-effectiveness.

[0003] In the production process of PVC pipes, the raw material powder needs to be added to the equipment system for heating and plasticization, and then the plasticized raw material is extruded through the die by an extruder. The existing equipment system is usually 2-3 meters high, and the feeding port is located at the top of the equipment system. Therefore, when building the equipment system, the equipment is generally installed on the first floor of the factory building, and the feeding port is set on the bottom of the second floor of the factory building to facilitate feeding into the equipment system.

[0004] However, since the bagged raw materials are stacked on the ground outside the feeding port, when the materials are to be unloaded into the equipment, the raw materials need to be manually lowered and moved to the feeding port for unloading, which is very time-consuming and labor-intensive, affecting the continuous production and processing efficiency of the product. Summary of the invention

[0005] The present invention is intended to provide a multi-channel automatic unloading device to solve the problem that manual movement of raw materials is time-consuming and labor-intensive, and affects the continuous production and processing efficiency of products.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-channel automatic unloading device, including a feeding port, which is arranged on the ground, and also includes a material picking mechanism, which includes a fixed shaft and a gripper, and the gripper is rotatably and vertically slidably arranged on the fixed shaft, and the gripper includes a mounting plate and two clamping jaws rotatably connected to the mounting plate, and the two clamping jaws are symmetrically arranged on the mounting plate, and a cylinder is connected between the clamping jaws and the mounting plate, and the cylinder seat of the cylinder is rotatably connected to the mounting plate, and the cylinder rod is rotatably connected to the clamping jaw; a plurality of insert knives are provided at one end of the two clamping jaws away from the mounting plate, and the plurality of insert knives are arranged and distributed in sequence along the length direction of the clamping jaw; a feeding mechanism is provided between the material picking mechanism and the feeding port, and the feeding mechanism is provided with a feeding port and a feeding pipe, and the feeding pipe is provided with an outlet and an inlet, the inlet is connected to the feeding port, and the outlet is connected to the feeding port, and the gripper can be rotated on the fixed shaft and moved above the feeding port.

[0007] The principle of this scheme is: in the scheme of the present invention, the material taking mechanism is set up to automatically take the packaging bag containing the raw materials, and automatically move the packaging bag to the feeding port for feeding. Compared with the existing manual moving method, it is more convenient to use, saves time and labor, and is conducive to continuous production and improving product processing efficiency.

[0008] Specifically, the clamp in this solution can automatically pick up the packaging bag under the drive of the cylinder, thereby replacing the manual handling operation. When the clamp grabs the package, the knife is directly inserted into the packaging bag. On the one hand, the knife is used to directly pick up the package and move the packaging bag, which is convenient for moving the packaging bag. On the other hand, the knife also damages the packaging bag, which is conducive to discharging the raw materials in the packaging bag in the subsequent process.

[0009] The advantages of this solution are:

[0010] 1. The packaging bags are automatically grabbed and moved by the gripper, which saves time and effort, and is conducive to continuous feeding and improving processing efficiency;

[0011] 2. Insert the knife into the packaging bag to move the packaging bag. On the one hand, it can ensure the effective movement of the packaging bag, and on the other hand, it can damage the packaging bag, which is conducive to breaking the bag and discharging the raw materials.

[0012] Preferably, as an improvement, the feeding mechanism also includes a feeding hopper and a conveyor belt, the hopper mouth of the feeding hopper is a feeding port, a leakage port is provided at the bottom of the feeding hopper, one end of the conveyor belt is located below the leakage port, and the other end extends to above the entrance of the feeding pipe.

[0013] Through the above scheme, the gripper moves the packaging bag to the top of the feeding hopper. After the bag is broken, the raw materials enter the feeding hopper and fall onto the conveyor belt through the leakage port. The conveyor belt transports the raw materials in an orderly manner to the feeding pipe for automatic feeding. Compared with directly adding materials to the feeding pipe, the setting of the feeding hopper and the conveyor belt enables the feeding into the feeding pipe in an orderly manner, which is convenient for controlling the feeding amount of the feeding pipe.

[0014] Preferably, as an improvement, a swing arm is fixedly connected to a side of the clamping jaw away from the inserting knife, and the cylinder rod of the cylinder is rotatably connected to the swing arm.

[0015] Through the above scheme, a lever mechanism is formed between the swing arm and the clamping claw. When the cylinder drives the swing arm to swing, the clamping claw follows the swing under the action of the lever to clamp the packaging bag, which makes it easier to control the swing of the clamping claw and is beneficial to the control of the swing angle and clamping force of the clamping claw.

[0016] Preferably, as an improvement, an auxiliary claw is rotatably connected to the swing arm, a tension spring is connected between the auxiliary claw and the swing arm, the end of the auxiliary claw away from the swing arm is rotatably connected to the auxiliary arm, and a compression spring is connected between the auxiliary arm and the auxiliary claw.

[0017] The auxiliary claw is used to assist the clamping claw in moving the packaging bag. When the packaging bag needs to be clamped and moved, the cylinder drives the swing arm to swing downward, and the auxiliary claw follows the swing arm. During the movement, the auxiliary claw always remains in a vertical state under the action of gravity and gradually forms an angle with the swing arm. During the continuous swinging of the swing arm, the auxiliary claw always remains in a vertical state and passes through the side of the packaging bag. At this time, the auxiliary arm is squeezed by the packaging bag and moves toward the side of the auxiliary claw. After the auxiliary arm moves to the bottom of the packaging bag, the packaging bag no longer squeezes the auxiliary arm. The auxiliary arm swings toward the outside of the auxiliary claw under the action of the compression spring, so that the angle between the auxiliary claw and the auxiliary arm becomes larger. At this time, the auxiliary arm rests on the bottom of the packaging bag, thereby forming support for the bottom of the packaging bag during the process of moving the packaging bag. On the one hand, it assists the clamping claw in moving the packaging bag. On the other hand, it also reduces the pulling force of the bottom of the packaging bag on the part where the knife is inserted into the packaging bag, so as to avoid the part of the packaging bag where the knife is inserted being pulled and torn, thereby causing the raw materials to leak.

[0018] Preferably, as an improvement, an inclined bayonet is provided on one side of the auxiliary claw facing the clamping jaw, the bayonet is rotationally connected to the auxiliary claw, one end of the bayonet connected to the auxiliary claw is the low end and the other end is the high end, and a compression spring is connected between the bayonet and the auxiliary claw.

[0019] Through the above scheme, when the auxiliary claw passes vertically through the side of the packaging bag and the auxiliary arm is against the bottom of the packaging bag, the bayonet is also squeezed by the side of the packaging bag and retracts to the side of the auxiliary claw, but at this time there is still a small angle between the bayonet and the auxiliary claw. When the packaging bag is moved to the feeding hopper, the packaging bag is placed on the hopper mouth of the feeding hopper. When the clamp releases the packaging bag, the swing arm swings upward in the opposite direction to reset, thereby driving the auxiliary claw to produce lateral and longitudinal displacement. In this process, the bayonet pierces the packaging bag with its tip under the pressure of the compression spring, and follows the auxiliary claw to move upward to cut the packaging bag, so that the raw materials in the packaging bag automatically fall into the feeding hopper, thus realizing automatic bag breaking and material unloading.

[0020] Preferably, as an improvement, a limiting block is fixedly provided on the auxiliary claw, an arc-shaped notch is provided on the limiting block, the bayonet is located in the notch, and the limiting block is located below the bayonet.

[0021] Through the above scheme, the limit block is used to limit the angle between the bayonet and the auxiliary claw to ensure the inclined state of the bayonet, to prevent the bayonet from changing its inclined direction due to obstruction by the packaging bag and the raw material during the process of piercing the packaging bag and cutting it, and to ensure the bayonet's bag-breaking effect on the packaging bag.

[0022] Preferably, as an improvement, the bayonets and the limit blocks are provided in multiple groups, and the multiple groups of bayonets are arranged in sequence along the length direction of the auxiliary claw.

[0023] Through the above scheme, multiple groups of bayonets successively cut through the same part of the packaging bag to open the packaging bag, thereby ensuring the opening quality and enabling the raw materials to be effectively discharged.

[0024] Preferably, as an improvement, multiple groups of auxiliary jaws are also provided, and the multiple groups of auxiliary jaws are arranged in sequence along the length direction of the clamping jaws.

[0025] Through the above scheme, multiple groups of auxiliary claws simultaneously provide auxiliary support for the packaging bag when moving the packaging bag to enhance the moving effect of the packaging bag. At the same time, when breaking the bag, multiple groups of bayonets on the multiple groups of auxiliary claws jointly damage multiple parts of the packaging bag, which on the one hand enhances the breaking effect of the packaging bag, and on the other hand can form multiple openings on the packaging bag, which is convenient for the rapid discharge of raw materials.

[0026] Preferably, as an improvement, a spiral conveying shaft is rotatably provided in the feed pipe, there are multiple feeding ports, a feed pipe is connected between the feed pipe and the multiple feeding ports, and a control valve for controlling the feed pipe to discharge materials to the feeding port is installed on the feed pipe.

[0027] Through the above scheme, the spiral conveying shaft is used to convey the raw materials from the inlet of the feeding pipe to the lower feeding pipe, so that the raw materials can enter into multiple feeding ports respectively, which is convenient for simultaneous processing of multiple groups of equipment.

[0028] Preferably, as an improvement, a connecting arm is provided on the fixed shaft for vertical sliding, and the connecting arm includes a sliding arm vertically slidably connected to the fixed shaft and a rotating arm rotatably connected to the sliding arm, and the rotating arm is fixedly connected to the gripper at the same time.

[0029] Through the above solution, the connecting arm and the rotating arm are used to realize the vertical sliding and horizontal rotation of the gripper, thereby facilitating the gripper to grasp and place the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of Example 1.

[0031] Figure 2 This is a schematic diagram of the structure of the gripper in Example 1.

[0032] Figure 3 This is a schematic diagram of the structure of the gripper in Example 2, showing the state when grabbing a packaging bag.

[0033] Figure 4 for Figure 3 Enlarged view of part A in the figure.

[0034] Figure 5 for Figure 3 Enlarged view of part B in the middle.

[0035] Figure 6 for Figure 3Enlarged view of part C in the middle. DETAILED DESCRIPTION

[0036] The following is further described in detail through specific implementations, but the implementation of the present invention is not limited thereto. Unless otherwise specified, the technical means used in the following implementations are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents, etc. used can all be obtained from commercial channels.

[0037] The figure marks in the drawings of the specification include: feeding port 1, fixed shaft 2, gripper 3, sliding arm 4, rotating arm 5, mounting plate 6, clamping jaws 7, cylinder 8, swing arm 9, inserting knife 10, feeding pipe 11, outlet 12, inlet 13, feeding hopper 14, conveyor belt 15, feeding port 16, leakage port 17, spiral conveyor shaft 18, feeding pipe 19, control valve 20, auxiliary claw 21, tension spring 22, bayonet 23, compression spring 24, limit block 25, notch 26, auxiliary arm 27, packaging bag 28.

[0038] Example 1

[0039] A multi-channel automatic unloading device in this embodiment has a structure as follows Figure 1 As shown, it includes a feeding port 1, which is arranged on the ground, and a material taking mechanism, which includes a fixed shaft 2 and a gripper 3, and the gripper 3 is rotatably and vertically slidably arranged on the fixed shaft 2. Specifically: a connecting arm is vertically slidably arranged on the fixed shaft 2, and the connecting arm includes a sliding arm 4 vertically slidably connected to the fixed shaft 2 and a rotating arm 5 rotatably connected to the sliding arm 4 via a rotating shaft. The sliding connection here can be realized by a slide rail, and its principle and structure are not described in detail here. The rotating arm 5 is also fixedly connected to the gripper 3 by bolts. In actual application, in order to improve the automation degree of the equipment, it is easy to think of connecting a driving cylinder to the connecting arm to drive the gripper 3 to move vertically, and it is also easy to think of connecting a driving motor to the rotating arm 5 to realize the horizontal rotation of the gripper 3. These are relatively common driving structures and methods, and their specific connection structures and principles are not described in detail here.

[0040] Combination Figure 2 As shown, the gripper 3 includes a mounting plate 6 and two clamping jaws 7 rotatably connected to the mounting plate 6 through a rotating shaft. The mounting plate 6 is fixedly connected to the rotating arm 5. The two clamping jaws 7 are symmetrically arranged on the mounting plate 6. A cylinder 8 is connected between the clamping jaws 7 and the mounting plate 6. The cylinder seat of the cylinder 8 is rotatably connected to the mounting plate 6 through a rotating shaft, and the cylinder rod is rotatably connected to the clamping jaw 7 through a rotating shaft. A plurality of inserting knives 10 are provided at one end of the two clamping jaws 7 away from the mounting plate 6. The plurality of inserting knives 10 are sequentially arranged and distributed along the length direction of the clamping jaw 7, that is, referring to Figure 2The page shown has a plurality of inserting knives 10 arranged inwardly. In this embodiment, a swing arm 9 is welded and fixed to the side of the clamping jaw 7 away from the inserting knives 10, and the cylinder rod of the cylinder 8 is rotatably connected to the swing arm 9 through a rotating shaft, so as to realize the rotational connection between the cylinder rod 8 and the clamping jaw 7.

[0041] At the same time, a feeding mechanism is also provided between the material taking mechanism and the feeding port 1. The feeding mechanism is provided with a feeding port 16 and a feeding pipe 11. The feeding pipe 11 is provided with an outlet 12 and an inlet 13. The inlet 13 is connected to the feeding port 16, and the outlet 12 is connected to the feeding port 1. The gripper 3 can rotate on the fixed shaft 2 and move to the top of the feeding port 16. The feeding mechanism in this embodiment also includes a feeding hopper 14 and a conveyor belt 15. The hopper mouth of the feeding hopper 14 is the feeding port 16. The bottom of the feeding hopper 14 is provided with a leakage port 17. One end of the conveyor belt 15 is located below the leakage port 17, and the other end extends to the top of the inlet 13 of the feeding pipe 11. A spiral conveying shaft 18, i.e., a spiral auger, is provided in the feeding pipe 11 to push the raw materials. There are multiple feeding ports 1, and a feeding pipe 19 is connected between the feeding pipe 11 and the multiple feeding ports 1. A control valve 20 for controlling the feeding pipe 19 to discharge materials to the feeding port 1 is installed on the feeding pipe 19. In actual application, in order to facilitate the control of the feeding amount when the feeding hopper 14 feeds the conveyor belt 15, it is easy to think of setting a valve at the leakage port 17 of the feeding hopper 14. At the same time, the driving and feeding principles of the conveyor belt 15 and the screw conveyor shaft 18 are also relatively mature existing technologies, which will not be repeated here.

[0042] In the specific implementation of this embodiment, the packaging bag 28 is a nylon bag, which is easily cut by the insertion of the knife 10 and the bayonet 23. The packaging bags 28 containing raw materials are stacked and placed next to the material taking mechanism.

[0043] When blanking is required, the sliding arm 4 slides vertically on the fixed shaft 2 to bring the gripper 3 close to the packaging bag 28; then the cylinder 8 drives the swing arm 9 to swing, so that the two clamping claws 7 swing inward to the position as shown in FIG. Figure 2 In the state shown, the blades 10 on the two clamps 7 are inserted into the packaging bag 28, and then the sliding arm 4 drives the gripper 3 to move upward, and the clamps 7 carry the grabbed packaging bag 28 away from the stacking area, and then the rotating arm 5 drives the gripper 3 to rotate, so that the packaging bag 28 moves to the top of the feeding hopper 14, and the sliding arm 4 drives the gripper 3 to move downward again, so that the packaging bag 28 is placed on the feeding port 16 of the feeding hopper 14. After the packaging bag 28 is placed, the cylinder 8 drives the swing arm 9 to swing and reset, and at this time, the clamps 7 also swing and reset and the blade 10 is withdrawn from the packaging bag 28. The breach formed when the blade 10 is inserted into the packaging bag 28 is opened, and the raw materials leak out of the breach and fall into the feeding hopper 14. In actual application, in order to ensure the discharge effect of the packaging bag 28 and accelerate the discharge of the raw materials from the packaging bag 28, the packaging bag 28 can be manually scratched, thereby accelerating the feeding into the feeding hopper 14.

[0044] After the raw material enters the feeding hopper 14, it falls onto the conveyor belt 15 through the leakage port 17 and is transported to the feeding pipe 11 by the conveyor belt 15. The spiral conveying shaft 18 in the feeding pipe 11 spirally conveys the raw material, so that the raw material enters the discharge pipe 19 and falls into the feeding port 1 through the discharge pipe 19, realizing automatic discharge of the raw material.

[0045] By controlling the control valve 20, the amount of material fed from the feed pipe 19 to the feed port 1 can be controlled, which is convenient for actual production use.

[0046] Example 2

[0047] This embodiment is based on embodiment 1. Figure 3 As shown, an auxiliary claw 21 is also rotatably connected to the swing arm 9 via a rotating shaft. Figure 4 As shown, a tension spring 22 is connected between the auxiliary claw 21 and the swing arm 9. Figure 5 The end of the auxiliary claw 21 away from the swing arm 9 is connected to the auxiliary arm 27 through a rotating shaft, and a compression spring 24 is connected between the auxiliary arm 27 and the auxiliary claw 21. Figure 6 As shown, the auxiliary claw 21 is provided with an inclined bayonet 23 on one side facing the clamping claw 7, and the bayonet 23 is rotatably connected to the auxiliary claw 21, and one end of the bayonet 23 connected to the auxiliary claw 21 is the lower end, and the other end is the higher end, so that the opening of the angle formed between the bayonet 23 and the auxiliary claw 21 faces upward, and a compression spring 24 is connected between the bayonet 23 and the auxiliary claw 21. A stop block 25 is fixedly provided on the auxiliary claw 21, and an arc-shaped notch 26 is provided on the stop block 25, and the bayonet 23 is located in the notch 26, and the stop block 25 is located below the bayonet 23.

[0048] In addition, the auxiliary claws 21 in this embodiment are provided in a plurality of groups, and the plurality of groups of auxiliary claws 21 are arranged along the length direction of the clamping claw 7 (i.e. Figure 3 Each auxiliary claw 21 is provided with a plurality of bayonets 23 and a stop block 25. The plurality of bayonets 23 on the same auxiliary claw 21 are arranged along the length direction of the auxiliary claw 21 (i.e. Figure 3 The vertical direction in the figure) are arranged in sequence.

[0049] In the specific implementation of this embodiment, when the cylinder 8 drives the swing arm 9 to swing downward and the clamping claw 7 grabs the packaging bag 28, the auxiliary claw 21 always remains in a vertical state under the action of gravity, and the auxiliary claw 21 moves downward with the swing arm 9, so that the auxiliary arm 27 is against the side of the packaging bag 28. The auxiliary arm 27 is pushed by the side of the packaging bag 28 and swings toward the side of the auxiliary claw 21. When the auxiliary arm 27 moves to the bottom of the packaging bag 28, refer to Figure 5As shown, the auxiliary arm 27 swings away from the auxiliary claw 21 under the action of the compression spring 24, so that the angle between the auxiliary claw 21 and the auxiliary arm 27 becomes larger, and the auxiliary arm 27 abuts against the bottom of the packaging bag 28, so that when the clamp 7 grabs the packaging bag 28 and drives the packaging bag 28 to move, the packaging bag 28 is supported, which is more conducive to the clamping and movement of the packaging bag 28, and at the same time, the part where the inserting knife 10 is inserted into the packaging bag 28 is prevented from being pulled and torn during the movement, resulting in the leakage of raw materials. In actual application, in order to facilitate the auxiliary arm 27 to abut against the bottom of the packaging bag 28, thereby supporting the movement of the packaging bag 28, a certain gap can be left between the upper edge of the packaging bag 28 and the lower edge of the packaging bag 28 when the packaging bag 28 is stacked, for example, the stacking is carried out in a criss-cross distribution manner to ensure that the auxiliary arm 27 can effectively contact and abut against the bottom of the packaging bag 28. At the same time, in order to prevent the auxiliary arm 27 from swinging and tilting downward due to the pressure of the packaging bag 28, a limiting protrusion can be set at the connection between the auxiliary arm 27 and the auxiliary claw 21 to prevent the auxiliary arm 27 from continuing to swing downward. This is a routine operation in this field and will not be repeated here.

[0050] Combination Figure 6 It is understood that while the auxiliary claw 21 moves downward following the swing arm 9, the bayonet 23 is also pushed by the side wall of the packaging bag 28 and swings toward the side of the auxiliary claw 21, but under the action of the compression spring 24, there is still a small angle between the bayonet 23 and the auxiliary claw 21, so the tip of the bayonet 23 still protrudes to the outside of the auxiliary claw 21.

[0051] After the packaging bag 28 is placed on the feeding port 16 of the feeding hopper 14, when the cylinder 8 controls the swing arm 9 to swing back and reset, the swing arm 9 moves vertically upward and laterally toward the inner side of the clamping claw 7. At this time, the auxiliary claw 21 moves upward and laterally, so that the bayonet 23 obliquely penetrates into the packaging bag 28 and cuts the packaging bag 28 during the continuous movement, thereby automatically breaking and opening the bag, so that the material can be automatically discharged from the packaging bag 28. The setting of the limit block 25 limits the inclination direction of the bayonet 23, so that the angle opening between the bayonet 23 and the auxiliary claw 21 can only face upward, thereby ensuring the opening effect of the bayonet 23 on the packaging bag 28.

[0052] The multiple groups of bayonets 23 on the same auxiliary claw 21 sequentially cut across the same part of the packaging bag 28 to open the packaging bag 28 to ensure the opening effect; the multiple groups of bayonets 23 on different auxiliary claws 21 open multiple parts of the packaging bag 28 respectively to ensure the discharge effect of the raw materials.

[0053] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-channel automatic feeding device, comprising a feeding port, the feeding port being arranged on the ground, characterized in that: It also includes a material picking mechanism, which includes a fixed shaft and a gripper, which is rotatably and vertically slidably arranged on the fixed shaft, and the gripper includes a mounting plate and two clamping jaws rotatably connected to the mounting plate, the two clamping jaws are symmetrically arranged on the mounting plate, and a cylinder is connected between the clamping jaws and the mounting plate, the cylinder seat of the cylinder is rotatably connected to the mounting plate, and the cylinder rod is rotatably connected to the clamping jaws; a plurality of knives are provided at one end of the two clamping jaws away from the mounting plate, and the plurality of knives are arranged and distributed in sequence along the length direction of the clamping jaws; a feeding mechanism is provided between the material picking mechanism and the feeding port, the feeding mechanism is provided with a feeding port and a feeding pipe, the feeding pipe is provided with an outlet and an inlet, the inlet is connected to the feeding port, and the outlet is connected to the feeding port, and the gripper can be rotated on the fixed shaft and moved above the feeding port.

2. A multi-channel automatic unloading device according to claim 1, characterized in that: The feeding mechanism also includes a feeding hopper and a conveyor belt. The hopper mouth of the feeding hopper is the feeding port. A leakage port is provided at the bottom of the feeding hopper. One end of the conveyor belt is located below the leakage port and the other end extends above the entrance of the feeding pipe.

3. A multi-channel automatic unloading device according to claim 2, characterized in that: A swing arm is fixedly connected to a side of the clamping jaw away from the inserting knife, and a cylinder rod of the cylinder is rotatably connected to the swing arm.

4. A multi-channel automatic unloading device according to claim 3, characterized in that: An auxiliary claw is rotatably connected to the swing arm, a tension spring is connected between the auxiliary claw and the swing arm, one end of the auxiliary claw away from the swing arm is rotatably connected to the auxiliary arm, and a compression spring is connected between the auxiliary arm and the auxiliary claw.

5. A multi-channel automatic unloading device according to claim 4, characterized in that: The auxiliary claw is provided with an inclined bayonet on one side facing the clamping claw. The bayonet is rotatably connected to the auxiliary claw. One end of the bayonet connected to the auxiliary claw is the low end and the other end is the high end. A compression spring is connected between the bayonet and the auxiliary claw.

6. A multi-channel automatic unloading device according to claim 5, characterized in that: A limiting block is fixedly arranged on the auxiliary claw, an arc-shaped notch is arranged on the limiting block, the bayonet is located in the notch, and the limiting block is located below the bayonet.

7. A multi-channel automatic unloading device according to claim 6, characterized in that: The bayonets and the limit blocks are provided in multiple groups, and the multiple groups of bayonets are arranged in sequence along the length direction of the auxiliary claws.

8. A multi-channel automatic unloading device according to claim 7, characterized in that: The auxiliary claws are also provided with multiple groups, and the multiple groups of auxiliary claws are arranged in sequence along the length direction of the clamping claws.

9. A multi-channel automatic unloading device according to any one of claims 1 to 8, characterized in that: A spiral conveying shaft is rotatably arranged in the feeding pipe, and there are multiple feeding ports. A feeding pipe is connected between the feeding pipe and the multiple feeding ports, and a control valve for controlling the feeding pipe to discharge materials to the feeding port is installed on the feeding pipe.

10. A multi-channel automatic unloading device according to claim 9, characterized in that: A connecting arm is vertically slidably provided on the fixed shaft, and the connecting arm comprises a sliding arm vertically slidably connected to the fixed shaft and a rotating arm rotatably connected to the sliding arm, and the rotating arm is fixedly connected to the gripper at the same time.

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