A plastic product production material taking manipulator

Abstract

The present invention relates to the field of mechanical arms, and in particular to a material-grabbing mechanical arm for producing plastic products, which comprises an arm body; a closed cover, which is installed on the arm body; a suction part, which comprises a main pipeline, at least two auxiliary pipelines connected to the main pipeline, and a distribution pipeline connected to the auxiliary pipeline arranged in the closed cover; an opening and closing valve is arranged on each of the distribution pipelines, and the opening and closing valve comprises a valve cabin arranged on the distribution pipeline, and a lifting core installed on the valve cabin; a monitoring part is arranged on each of the auxiliary pipelines; and a blocking part is also arranged on the closed cover; through the above scheme, the monitoring part can monitor the change of gas flow, convert the information into electrical signals and transmit it to the controller, and the controller drives and controls the stepping motor to work through the driver, so that the blocking part reaches a closed state, and the blocking part can prevent the plastic product from escaping from the closed cover due to the shaking of the mechanical arm during movement after the plastic product enters the closed cover.

Description

Technical Field

[0001] The present invention relates to the field of robotic arms, and in particular to a plastic product production and material taking manipulator. Background Art

[0002] When plastic products are produced, after the products are injection molded by an injection molding machine, the plastic finished products need to be removed from the mold. Although existing molds are all equipped with an ejection mechanism, there will still be a situation of plastic adhesion between the finished products and the mold, and manual removal is required. Manual participation is very likely to cause safety accidents such as burns.

[0003] When using a manipulator for operation, if the clamping method is directly adopted, although the problem of personnel burns can be avoided, the plastic products that have just been formed for a short time are very likely to be deformed due to the clamping force, and most of the injection molded products are irregular, and it is also very easy to cause the problem of dropping off during material taking by clamping. Therefore, the present invention proposes a plastic product production and material taking manipulator. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: the material taking of the clamping manipulator is unstable.

[0005] The above technical problem is solved by the following technical solution: The present invention proposes a plastic product production and material taking manipulator, which includes an arm body;

[0006] A closed cover, which is installed on the arm body;

[0007] A suction part, including a main pipeline, at least two sub-pipelines connected to the main pipeline, and a distribution pipeline arranged in the closed cover and connected to the sub-pipelines;

[0008] An opening and closing valve is arranged on each of the distribution pipelines. The opening and closing valve includes a valve chamber arranged on the distribution pipeline and a lifting core installed on the valve chamber;

[0009] A monitoring part is arranged on each of the sub-pipelines;

[0010] A blocking part is further arranged on the closed cover;

[0011] When the plastic product is sucked into the interior of the closed cover, the lifting core is pressed. The lifting core can be pressed to close the distribution pipeline when it is pressed. The monitoring part can monitor the gas flow information of the sub-pipeline caused by the closing of the distribution pipeline, and the blocking part can close the closed cover according to the gas flow information.

[0012] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: the valve chamber has two communication ends communicating with the distribution pipeline;

[0013] The lifting core includes a valve plate disposed in the valve chamber and an extension body connected to the valve plate and extending outside the valve chamber;

[0014] When the extension body is pressed, the valve plate can change its position to close the communication end.

[0015] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: The blocking portion includes a connecting member rotatably connected to the closed cover and a shielding member capable of rotating synchronously with the connecting member.

[0016] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: A fixed shaft body is fixed on the closed cover, and the connecting member is rotatably connected to the fixed shaft body.

[0017] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: A sliding core is arranged in the secondary pipeline, and the sliding core and the blocking portion are connected by a pulling portion;

[0018] In the natural state, the sliding core can block the secondary pipeline and the distribution pipeline.

[0019] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: A communication port is formed on the radial side wall of the sliding core. When the sliding core moves upward relative to the secondary pipeline, the communication port can connect the secondary pipeline and the distribution pipeline.

[0020] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: The secondary pipeline includes an enlarged diameter section and a reduced diameter section. The enlarged diameter section is connected to the reduced diameter section through a first connection point, and the reduced diameter section is connected to the distribution pipeline through a second connection point;

[0021] In the natural state, the sliding core is located in the reduced diameter section, the first connection point and the second connection point are blocked, and when the sliding core moves upward relative to the secondary pipeline, the communication port connects the first connection point and the second connection point.

[0022] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: A pressing ring is arranged on the sliding core, and an elastic member abuting against the pressing ring is sleeved outside the sliding core.

[0023] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: The pulling portion includes a synchronous frame connected to the sliding core and a convex column installed on the synchronous frame; A through groove is formed on the connecting member, and the convex column extends into the interior of the through groove.

[0024] In a preferred embodiment of the plastic product production and material taking manipulator of the present invention: The distribution pipeline has an air suction port, and the height of the air suction port is higher than that of the extension body.

[0025] The beneficial effect of the present invention is that: through the above scheme, the monitoring part can monitor the change of gas flow rate, convert the information into electrical signals and transmit it to the controller. The controller drives and controls the stepper motor through the driver to make the blocking part reach a closed state. After the plastic product enters the closed cover, the blocking part can prevent the plastic product from escaping from the closed cover due to the shaking of the manipulator during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention. Among them:

[0027] Figure 1 The overall structure schematic diagram of the plastic product production and material taking robot in the present invention is shown;

[0028] Figure 2 A schematic diagram of the internal structure of the sealing cover in the present invention is shown;

[0029] Figure 3 The schematic diagram of the structure of the opening and closing valve and the blocking part in the present invention is shown;

[0030] Figure 4 The specific structural diagram of the suction part in the present invention is shown;

[0031] Figure 5 The specific structural schematic diagram of the distribution pipeline in the present invention is shown;

[0032] Figure 6 The schematic diagram of the structure of the sliding core and the pulling part in the present invention is shown;

[0033] Figure 7 The schematic diagram of the structure of the sliding core and the auxiliary pipeline in the present invention is shown;

[0034] Figure 8 Shows Figure 3 Enlarged view of point A in the middle.

[0035] 100, Arm body; 101, Mounting base; 102, Rotary seat; 103, Boom; 104, Forearm; 105, Wrist; 106, Operating shaft; 200, Enclosure; 201, Fixed shaft body; 300, Suction part; 301, Main pipeline; 302, Sub-pipeline; 3021, Enlarged diameter section; 3022, Reduced diameter section; 3023, First connection point; 3024, Second connection point; 303, Distribution pipeline; 3031, Suction port; 400, On-off valve; 401, Valve chamber; 402, Lifting core; 4021, Valve plate; 4022, Extension body; 403, Connecting end; 500, Monitoring part; 600, Blocking part; 601, Connecting member; 6011, Through groove; 602, Shielding member; 700, Sliding core; 701, Connecting port; 702, Pressing ring; 703, Elastic member; 800, Pulling part; 801, Synchronization frame; 802, Convex column. Detailed implementation manner

[0036] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific implementation manners and the accompanying drawings.

[0037] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention. However, these terms may vary according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0038] Refer to Figure 1 , this embodiment provides a plastic product production material taking manipulator, including an arm body 100; the arm body 100 is composed of several components connected by shafts, such as Figure 1 shown, mainly including a mounting base 101, the mounting base 101 can be directly mounted on the workbench of a vertical injection molding machine. On the mounting base 101, a rotatable rotary seat 102 is installed. On the rotary seat 102, a rotatable boom 103 is installed. At the end of the boom 103 away from the rotary seat 102, a rotatable forearm 104 is installed. At the end of the forearm 104 away from the boom 103, a rotatable wrist 105 is installed. On the wrist 105, a rotatable operating shaft 106 is also installed. These components with connection relationships are rotationally connected by means of shafts, and drive motors are arranged at the connection points to drive the rotation of these components through the drive motors.

[0039] Such as Figure 1, the plastic product production material taking manipulator includes an enclosure 200, which is installed on the arm body 100; the enclosure 200 is a cover-shaped structure with an opening at the bottom end. The enclosure 200 is fixedly installed on the operating shaft 106, preferably installed on the operating shaft 106 in a detachable manner, such as by bolt-nut assembly. In this way, each arm body 100 can be paired with enclosures 200 of different sizes, and only need to disassemble and replace the enclosure 200.

[0040] Please refer to Figure 2 , the plastic product production material taking manipulator includes a suction part 300. The suction part 300 includes a main pipeline 301, at least two sub-pipelines 302 connected to the main pipeline 301, and a distribution pipeline 303 disposed in the enclosure 200 and connected to the sub-pipeline 302; the main function of the suction part 300 is to be able to suck the air inside the enclosure 200, so that the air pressure inside the enclosure 200 is reduced. When working, through the movement of the arm body 100, the enclosure 200 can be covered outside or above the injection mold of the injection molding machine. By sucking the air inside the enclosure 200 through the suction part 300, the air pressure inside the enclosure 200 is reduced, and the injection molded product that has been demolded on the injection mold can be sucked into the inside of the enclosure 200. Among them, the number of the main pipelines 301 is one, which is connected to an external device capable of sucking gas, such as an air pump. The gas suction device sucks the air inside the enclosure 200 through the main pipeline 301, the sub-pipeline 302, and the distribution pipeline 303.

[0041] Among them, please refer to Figure 4 , the number of the sub-pipelines 302 needs to be at least two. At least one distribution pipeline 303 is installed on each of the two sub-pipelines 302. Each distribution pipeline 303 is provided with an air suction port 3031. When the external gas suction device is working, the air inside the enclosure 200 is sucked into the inside of the distribution pipeline 303 through the air suction port 3031, and finally sucked away through the sub-pipeline 302 and the main pipeline 301.

[0042] Please refer to Figure 3 , an opening and closing valve 400 is provided on each distribution pipeline 303. The opening and closing valve 400 includes a valve chamber 401 disposed on the distribution pipeline 303, and a lifting core 402 installed on the valve chamber 401; when the plastic product is sucked into the inside of the enclosure 200, it will press the lifting core 402, causing the lifting core 402 to move upward. When the lifting core 402 is pressed upward, it can close the distribution pipeline 303.

[0043] Please refer to Figure 5, the valve chamber 401 has two connection ends 403 that connect to the distribution pipeline 303; the valve chamber 401 is directly installed on the distribution pipeline 303, and the two connection ends 403 allow the gas in the distribution pipeline 303 to flow through the interior of the valve chamber 401 and then flow back into the distribution pipeline 303. The lifting core 402 includes a valve plate 4021 disposed within the valve chamber 401 and an extension body 4022 that connects the valve plate 4021 and extends outside the valve chamber 401; when the extension body 4022 is pressed, the valve plate 4021 can change its position to close the connection end 403.

[0044] Please refer to Figure 5 , the position of the extension body 4022 is below the valve chamber 401 and the valve plate 4021, and there is a cavity below the connection end 403 within the valve chamber 401. Under the action of gravity, the valve plate 4021 enters the cavity and forms a dislocation with the connection end 403.

[0045] Of course, in order to enable this manipulator to better adapt to different types of injection molding machines, such as horizontal injection molding machines, and also to avoid the problem that the valve plate 4021 moves upward to block the connection end 403 due to the fast gas flow rate in the distribution pipeline 303, the initial position of the valve plate 4021 can be maintained by setting an elastic structure, that is, the valve plate 4021 and the two connection ends 403 are dislocated. For example, an elastic structure is set between the outer end of the extension body 4022 outside the valve chamber 401 and the valve chamber 401 to apply a thrust to the extension body 4022 in the direction away from the valve chamber 401 to help the valve plate 4021 maintain its initial position.

[0046] It is also possible to set magnetic sheets at the connection position between the valve plate 4021 and the extension body 4022, and also set magnetic sheets at the bottom of the cavity of the valve chamber 401 to keep the valve plate 4021 in its initial position through magnetic force.

[0047] Therefore, when not subject to external forces, the valve plate 4021 and the two connection ends 403 are in a dislocated state, so that the valve plate 4021 cannot block the gas flow. When the plastic product is sucked into the interior of the closed cover 200 and moves towards the distribution pipeline 303, it will press the extension body 4022, causing the extension body 4022 to move upward. During the upward movement of the extension body 4022, it pushes the valve plate 4021 upward. When the valve plate 4021 moves upward, it reaches between the two connection ends 403 of the valve chamber 401, cutting off the connection relationship between the two connection ends 403, so that the air flow cannot circulate inside the distribution pipeline 303 through the on-off valve 400, thereby achieving the effect of closing the distribution pipeline 303, which in turn affects the flow rate and flow volume of the gas inside the corresponding sub-pipeline 302. The height of the suction port 3031 is higher than that of the extension body 4022, so that when the plastic product moves towards the suction port 3031, it can more stably contact the extension body 4022.

[0048] Please refer to Figure 2, a monitoring unit 500 is provided on each secondary pipeline 302; the monitoring unit 500 can monitor the gas flow information of the secondary pipeline 302 caused by the closing of the distribution pipeline 303. The gas flow information is mainly the gas flow rate or flow information. When monitoring the flow information, a gas flow monitor can be selected. When monitoring the flow rate information, a gas flow rate monitor can be selected.

[0049] For example, when two or more secondary pipelines 302 are connected to the main pipeline 301, and a distribution pipeline 303 is installed on each secondary pipeline 302. When the on-off valve 400 on one of the distribution pipelines 303 is pressed by a plastic product, this distribution pipeline 303 will be closed, and the corresponding secondary pipeline 302 will also be closed. In this case, it is possible to choose to monitor the gas flow rate information or the gas flow information, because when the secondary pipeline 302 is closed, both the flow rate information and the flow information change significantly.

[0050] For another example, if each secondary pipeline 302 is provided with more than 2 distribution pipelines 303, it is preferred to monitor the flow rate information of the secondary pipeline 302. For example, the number of secondary pipelines 302 is three, and each secondary pipeline 302 is provided with three distribution pipelines 303. Under normal operation, each secondary pipeline 302 and the main pipeline 301 form a parallel relationship. According to the characteristics of parallel pipelines, the suction pressure inside each secondary pipeline 302 is the same, and the three distribution pipelines 303 inside each secondary pipeline 302 also form a parallel relationship. Then, the total intake resistance of the secondary pipeline 302 under normal conditions can be expressed as:

[0051]

[0052] where R1 represents the total intake resistance of the secondary pipeline 302 under normal conditions, and R0 represents the intake resistance of a single distribution pipeline 303. When one of the distribution pipelines 303 is closed, the total intake resistance of this secondary pipeline 302 can be expressed as:

[0053]

[0054] where R2 represents the total intake resistance of the secondary pipeline 302 when one distribution pipeline 303 is blocked, and R0 represents the intake resistance of a single distribution pipeline 303. Therefore, when one of the distribution pipelines 303 is blocked, the total intake resistance of the corresponding secondary pipeline 302 will increase. According to the flow distribution power, in a parallel pipeline, the flow is inversely proportional to the intake resistance, and it can be expressed as:

[0055]

[0056] Where Q1 represents the gas flow rate of the auxiliary pipeline 302 under normal conditions, Q2 represents the gas flow rate of the auxiliary pipeline 302 with one distribution pipeline 303 blocked, R1 represents the total intake resistance of the auxiliary pipeline 302 under normal conditions, and R2 represents the total intake resistance of the auxiliary pipeline 302 when one distribution pipeline 303 is blocked. It can be seen that when one distribution pipeline 303 is blocked, the flow rate of this auxiliary pipeline 302 is reduced to two-thirds of the original flow rate.

[0057] By monitoring the change in the gas flow rate in the auxiliary pipeline 302 through the monitoring unit 500, it is possible to determine whether a distribution pipeline 303 is blocked, and thus determine whether a plastic product has entered the interior of the closed cover 200 to push the extension body 4022 in the opening and closing valve 400.

[0058] A blocking portion 600 is further provided on the closed cover 200; the blocking portion 600 is provided below the distribution pipeline 303 and has two states, the first is the open state, and the second is the closed state. When in the open state, the blocking portion 600 does not block the opening of the closed cover 200, and the plastic product can enter the interior of the closed cover 200 through the opening. When in the closed state, the blocking portion 600 can block the opening of the closed cover 200 to prevent the plastic product from detaching from the closed cover 200 during the process of the manipulator transporting the plastic product. Therefore, the blocking portion 600 can prevent the plastic product from detaching from the closed cover 200 due to the vibration during the movement of the manipulator after the plastic product enters the interior of the closed cover 200.

[0059] The blocking portion 600 includes a connecting member 601 rotatably connected to the closed cover 200 and a shielding member 602 that can rotate synchronously with the connecting member 601. A fixed shaft body 201 is fixed on the closed cover 200, and the connecting member 601 is rotatably connected to the fixed shaft body 201. The shielding member 602 can be selected as a partition type structure or a mesh type structure, which can reduce the mass of the shielding member 602 itself. When the connecting member 601 rotates, it can drive the shielding member 602 to rotate, so that the shielding member 602 can block the opening of the closed cover 200 or convert the opening of the closed cover 200 to the open state.

[0060] Such as Figure 3 , in this embodiment, the number of the blocking portions 600 is two. The two blocking portions 600 rotating towards each other can block the opening of the closed cover 200, and the two blocking portions 600 rotating away from each other can open the opening of the closed cover 200. Regarding the drive of the blocking portion 600, in this embodiment, a motor type structure can be used to connect with the connecting member 601, and the connecting member 601 is driven to rotate through the motor type structure.

[0061] The blocking part 600 can close the closed cover 200 according to the gas flow information. For example, in this embodiment, the monitoring part 500 selects a gas flow monitor, and the gas flow monitor can be a vortex flowmeter. The monitoring part 500 is connected to a controller, and the controller can select a PLC control module or a single-chip microcomputer. In this embodiment, a single-chip microcomputer is selected as the controller. The motor structure that drives the connecting part 601 to rotate selects a stepping motor, and the stepping motor is driven and controlled by a driver. The gas flow monitor is connected to the controller and can transmit the monitored information to the single-chip microcomputer. The single-chip microcomputer drives and controls the stepping motor through the driver. When the gas flow monitor monitors the gas flow change inside the auxiliary pipeline 302, the single-chip microcomputer receives the changed information and controls the stepping motor to act through the driver, causing the blocking part 600 to change its state, and the blocking part 600 reaches the open or closed state.

[0062] The main working process of this manipulator is as follows:

[0063] After the injection molding machine completes injection molding and opens the mold, the arm body 100 drives the closed cover 200 to move, so that the closed cover 200 covers the outside or above the mold. An external air suction device provides a suction force, reducing the air pressure inside the closed cover 200, and the demolded plastic product is sucked into the inside of the closed cover 200.

[0064] After the plastic product is sucked in, it moves towards the distribution pipeline 303. During the movement, it presses the extension body 4022, causing the extension body 4022 to move upward, and the valve plate 4021 can move upward, closing the corresponding distribution pipeline 303, thereby affecting the gas flow in the corresponding auxiliary pipeline 302.

[0065] The monitoring part 500 can monitor the gas flow change, convert the information into an electrical signal and transmit it to the controller. The controller drives and controls the stepping motor to work through the driver, causing the blocking part 600 to reach the closed state. The blocking part 600 can prevent the plastic product from detaching from the closed cover 200 due to the vibration during the movement of the manipulator after the plastic product enters the inside of the closed cover 200.

[0066] As an alternative embodiment, please refer to Figure 6, this embodiment provides another way to drive the blocking part 600. Specifically, a sliding core 700 is arranged in the secondary pipeline 302, and the sliding core 700 and the blocking part 600 are connected by a pulling part 800. In the natural state, the sliding core 700 can block the secondary pipeline 302 and the distribution pipeline 303. A communication port 701 is formed on the radial side wall of the sliding core 700. When the sliding core 700 moves upward relative to the secondary pipeline 302, the communication port 701 can connect the secondary pipeline 302 and the distribution pipeline 303. When the main pipeline 301 starts to work, it can suck the air in the space above the sliding core 700, reducing the air pressure in the space above the sliding core 700. Under the action of the pressure difference, the sliding core 700 moves upward, enabling the communication port 701 to connect the secondary pipeline 302 and the distribution pipeline 303. When each secondary pipeline 302 is connected to multiple distribution pipelines 303, the multiple distribution pipelines 303 can be connected to a confluence pipe for connection with the secondary pipeline 302.

[0067] Specifically, as Figure 7 , the secondary pipeline 302 includes a diameter-expanded section 3021 and a diameter-reduced section 3022, where the diameter of the diameter-expanded section 3021 is larger than that of the diameter-reduced section 3022. The diameter-expanded section 3021 is connected to the diameter-reduced section 3022 through a first connection point 3023, and the diameter-reduced section 3022 is connected to the distribution pipeline 303 through a second connection point 3024. In the natural state, the sliding core 700 is located in the diameter-reduced section 3022, and the first connection point 3023 and the second connection point 3024 are blocked. When the air pressure inside the diameter-expanded section 3021 is sucked, under the action of the pressure difference, when the sliding core 700 moves upward relative to the secondary pipeline 302, the communication port 701 connects the first connection point 3023 and the second connection point 3024.

[0068] Therefore, through the work of the external air suction device and the main pipeline 301, the sliding core 700 can be moved upward. When the sliding core 700 moves upward, it drives the blocking part 600 to rotate through the pulling part 800, converting the blocking part 600 to the open state and opening the opening of the closed cover 200. When the sliding core 700 moves downward, the pulling part 800 pushes the blocking part 600 to rotate, converting the blocking part 600 to the closed state and closing the opening of the closed cover 200.

[0069] Specifically, a pressing ring 702 is arranged on the sliding core 700, and an elastic member 703 that abuts against the pressing ring 702 is also sleeved outside the sliding core 700. When the sliding core 700 moves upward, the pressing ring 702 presses the elastic member 703, causing the elastic member 703 to contract. When the external air suction device stops working, the elastic member 703 pushes the pressing ring 702, enabling the sliding core 700 to move downward and return to its original position.

[0070] Please refer to Figure 6 and Figure 8, the pulling part 800 includes a synchronous frame 801 connected to the sliding core 700, and a convex column 802 mounted on the synchronous frame 801; a through groove 6011 is formed in the connecting member 601, and the convex column 802 extends into the interior of the through groove 6011. In this embodiment, the number of the sub-pipes 302 is 4, and each sub-pipe 302 is provided with a sliding core 700. One end of the sliding core 700 extends to the outside of the sub-pipe 302. The two ends of the synchronous frame 801 are respectively connected to two sliding cores 700, so the number of the synchronous frames 801 is 2. The convex column 802 is fixed on the synchronous frame 801. When the convex column 802 moves upward, it can drive the end of the connecting member 601 where the through groove 6011 is opened to rotate upward through the through groove 6011, thereby driving the connecting member 601 to rotate counterclockwise. When the convex column 802 moves downward, it can push the end of the connecting member 601 where the through groove 6011 is opened to move downward through the through groove 6011, thereby driving the connecting member 601 to rotate clockwise. By the lifting of the convex column 802, the connecting member 601 is driven to rotate clockwise or counterclockwise, so that the entire blocking part 600 reaches the open or closed state.

[0071] Therefore, in the present invention, a stepper motor and a driver are not required, but instead, the controller controls the opening and closing of the external air suction device through a relay.

[0072] The main working process of this embodiment is as follows:

[0073] After the injection molding machine completes injection molding and mold opening, the arm body 100 drives the closing cover 200 to move, so that the closing cover 200 covers the outside or above the mold. The external air suction device provides a suction force, and the gas inside the enlarged diameter section 3021 of the sub-pipe 302 is sucked away. Under the action of the pressure difference, the sliding core 700 moves upward, driving the synchronous frame 801 to move upward, and the convex column 802 moves upward synchronously, pulling the connecting member 601 to rotate, so that the blocking part 600 reaches the open state.

[0074] After the plastic product is sucked in, it moves towards the distribution pipe 303. During the movement, it presses the extension body 4022, so that the extension body 4022 moves upward, and the valve plate 4021 can move upward, closing the corresponding distribution pipe 303, thereby affecting the gas flow rate in the corresponding sub-pipe 302.

[0075] The monitoring part 500 can monitor the change in the gas flow rate, convert the information into an electrical signal and transmit it to the controller. The controller closes the external air suction device through a relay. Under the action of the elastic member 703, the sliding core 700 moves downward, driving the synchronous frame 801 and the convex column 802 to move downward, pushing the connecting member 601 to rotate, so that the blocking part 600 reaches the closed state.

[0076] In this case, since the external air suction device is turned off, the plastic products sucked by the distribution pipeline 303 will fall downward and land above the blocking part 600. Through the movement of the arm body 100, the closed cover 200 and the plastic products inside the closed cover 200 can be driven to the finished product collection area, where the finished product collection area is the location for centrally collecting plastic products set according to production requirements.

[0077] Due to the push of the elastic member 703, the sliding core 700 will move downward more rapidly, and can push the blocking part 600 to the closed state before the plastic product falls, preventing the plastic product from falling off from the inside of the closed cover 200.

[0078] When the closed cover 200 reaches the finished product collection area and it is necessary to put down the plastic product, the external air suction device provides a suction force. The gas inside the enlarged diameter section 3021 of the sub-pipeline 302 is sucked away. Under the action of the pressure difference, the sliding core 700 moves upward, driving the synchronous frame 801 to move upward, and the convex column 802 moves upward synchronously, pulling the connecting member 601 to rotate, so that the blocking part 600 reaches the open state, and the plastic product above the blocking part 600 will break away from the blocking part 600.

[0079] Since the communication port 701 is opened on the radial side wall of the sliding core 700 and there is a distance between the communication port 701 and the top end of the sliding core 700, within a certain stroke when the sliding core 700 starts to move upward, it can pull the blocking part 600 to open at a certain angle to allow the plastic product to break away from the closed cover 200. For example, by adjusting the opening position of the communication port 701, within this stroke, the maximum opening angle of the blocking part 600 pulled by the sliding core 700 is 60°. At this time, the communication port 701 does not connect the sub-pipeline 302 and the distribution pipeline 303. Therefore, before the blocking part 600 is opened at a certain angle to facilitate the separation of the plastic product, the distribution pipeline 303 will not generate suction force on the plastic product, thus effectively avoiding the problem that the plastic product cannot break away from the closed cover 200 and enter the finished product collection area due to the suction force of the distribution pipeline 303.

[0080] It should be noted that the methods and devices described in detail above are only examples, and those skilled in the art can modify these examples in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A plastic product production material-taking manipulator, characterized in that: Comprising, an arm body (100); a closed cover (200) mounted on the arm body (100); a suction part (300) including a main pipeline (301), at least two sub-pipelines (302) connected to the main pipeline (301), and a distribution pipeline (303) disposed in the closed cover (200) and connected to the sub-pipelines (302); An on-off valve (400) is provided on each of the distribution pipelines (303), and the on-off valve (400) includes a valve chamber (401) provided on the distribution pipeline (303), and a lifting core (402) mounted on the valve chamber (401); A monitoring part (500) is provided on each of the sub-pipelines (302); A blocking part (600) is further provided on the closed cover (200); When a plastic product is sucked into the interior of the closed cover (200), the lifting core (402) is pressed, and the lifting core (402) can close the distribution pipeline (303) under pressure. The monitoring part (500) can monitor the gas flow information of the sub-pipeline (302) caused by the closing of the distribution pipeline (303), and the blocking part (600) can close the closed cover (200) according to the gas flow information; The blocking part (600) includes a connecting member (601) rotatably connected to the closed cover (200), and a shielding member (602) that can rotate synchronously with the connecting member (601); A sliding core (700) is provided in the sub-pipeline (302), and the sliding core (700) and the blocking part (600) are connected by a pulling part (800); In the natural state, the sliding core (700) can block the sub-pipeline (302) and the distribution pipeline (303); A communication port (701) is provided on the radial side wall of the sliding core (700). When the sliding core (700) moves upward relative to the sub-pipeline (302), the communication port (701) can communicate the sub-pipeline (302) and the distribution pipeline (303); The sub-pipeline (302) includes a diameter-expanded section (3021) and a diameter-reduced section (3022). The diameter-expanded section (3021) is connected to the diameter-reduced section (3022) through a first connection point (3023), and the diameter-reduced section (3022) is connected to the distribution pipeline (303) through a second connection point (3024); In the natural state, the sliding core (700) is located in the diameter-reduced section (3022), and the first connection point (3023) and the second connection point (3024) are blocked. When the sliding core (700) moves upward relative to the sub-pipeline (302), the communication port (701) communicates the first connection point (3023) and the second connection point (3024).

2. The plastic product production and material taking manipulator according to claim 1, characterized in that: The valve chamber (401) has two communication ends (403) communicating with the distribution pipeline (303); The lifting core (402) includes a valve plate (4021) provided in the valve chamber (401), and an extension body (4022) connecting the valve plate (4021) and extending outside the valve chamber (401); When the extension body (4022) is pressed, the valve plate (4021) can change its position to close the communication end (403).

3. The plastic product production and material taking manipulator according to claim 2, wherein: A fixed shaft body (201) is fixed on the closed cover (200), and the connecting member (601) is rotatably connected to the fixed shaft body (201).

4. The plastic product production and material taking manipulator according to claim 3, characterized in that: A pressing ring (702) is arranged on the sliding core (700), and an elastic member (703) that abuts against the pressing ring (702) is sleeved outside the sliding core (700).

5. The plastic product production and material taking manipulator according to claim 4, characterized in that: The pulling part (800) includes a synchronous frame (801) connected to the sliding core (700), and a convex column (802) installed on the synchronous frame (801); The convex column (802) is slidably connected to the blocking part (600).

6. The plastic product production and material taking manipulator according to claim 5, wherein: The distribution pipeline (303) has an air inlet (3031), and the height of the air inlet (3031) is higher than that of the extension body (4022).

Images