Automatic grabbing and cutting device for plastic parts and grabbing and cutting method

Abstract

The invention relates to the technical field of plastic part machining, and provides an automatic grabbing and cutting device for plastic parts and a grabbing and cutting method.The automatic grabbing and cutting device comprises a conveying unit located on the side of an injection molding machine and provided with a grabbing hand, and the grabbing hand is used for grabbing the formed plastic parts in the injection molding machine and conveying the formed plastic parts; a cutting unit is arranged on one side of the moving unit, and a conveying belt is arranged on the other side. The cutting unit is provided with a moving frame and a cutting piece. A first supporting block and a second supporting block are arranged on the moving frame, the two ends of the plastic part are placed on the first supporting block and the second supporting block correspondingly, and the moving frame is used for driving the plastic part to move; the cutting part is located above the moving frame and used for cutting the plastic part. And the conveying belt is used for receiving the cut plastic parts and conveying the cut plastic parts to a preset position. By integrating the conveying unit, the cutting unit and the conveying belt, the full-automatic operation process from injection molding part taking, transferring and positioning, dynamic cutting to finished product conveying is constructed, and integrated continuous production of plastic part machining is achieved.

Description

Technical Field

[0001] This invention belongs to the field of plastic parts processing, and specifically relates to an automatic gripping and cutting device and a gripping and cutting method for plastic parts. Background Technology

[0002] In existing technologies, the cutting and processing of plastic parts faces significant efficiency bottlenecks and quality control challenges. Specifically, after the injection molding machine completes the molding of the plastic part, the operator must manually remove the finished product from the injection molding machine and transfer it to the cutting and processing station. Upon arrival at the station, the operator must use a cutting tool (such as a heating wire, scissors, or mechanical blade) to cut the plastic part.

[0003] The transfer process from the injection molding machine to the cutting station requires additional time and space resources. In the cutting process, since it relies entirely on manual operation, it is difficult to accurately control key parameters such as force, angle and depth during the cutting process. It is very easy to cause cutting size deviation due to differences in operator experience, fatigue or lack of concentration, which affects the consistency of product quality.

[0004] Furthermore, manual cutting presents significant safety hazards: operators must directly contact high-temperature cutting tools (such as heating wires) or sharp blades, facing risks of burns and cuts. Simultaneously, prolonged repetitive labor easily leads to occupational fatigue, which not only increases safety risks but also further reduces production efficiency and product quality stability.

[0005] In summary, existing plastic parts cutting and processing technologies have significant shortcomings in terms of efficiency, quality, cost, and safety. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is to propose an automated gripping and cutting device and method for plastic parts. By integrating a transport unit, a cutting unit, and a conveyor belt, a fully automated workflow is constructed, encompassing injection molding part retrieval, transfer and positioning, dynamic cutting, and finished product delivery, achieving integrated continuous production of plastic parts. Compared to manual operation, this significantly improves production efficiency and operational safety, while ensuring consistent cutting accuracy and product quality, effectively reducing reliance on manual labor and operating costs.

[0007] The technical solution adopted by this invention to solve its technical problem is to propose an automatic gripping and cutting device for plastic parts, comprising:

[0008] A conveying unit located on the side of the injection molding machine and having a movable gripper for gripping and conveying the molded plastic parts inside the injection molding machine;

[0009] A cutting unit is disposed on one side of the conveying unit, the cutting unit having a movable frame and a cutting component;

[0010] The movable frame is provided with a first support block and a second support block. The first support block is higher than the second support block in the vertical direction. The two ends of the plastic part are respectively placed on the first support block and the second support block. The movable frame is used to drive the plastic part to move.

[0011] The cutting component is located above the movable frame and is used to cut the plastic parts on the movable frame;

[0012] A conveyor belt, located on the other side of the transport unit, is used to receive the cut plastic parts and transport them to a preset position.

[0013] In the above-mentioned automatic gripping and cutting device for plastic parts, the movable frame is further provided with at least one positioning pin, which is located between the first support block and the second support block and is inserted into the plastic part to provide positioning for the plastic part.

[0014] In the above-mentioned automatic gripping and cutting device for plastic parts, a first groove, a protrusion and a second groove are arranged side by side on the first support block, and the protrusion is located between the first groove and the second groove.

[0015] When the plastic part is placed on the movable frame, the protrusion is inserted into the plastic part, one side wall of the plastic part is located in the first groove and abuts against the inner side wall of the first groove, and the other side wall is located in the second groove.

[0016] In the above-mentioned automatic gripping and cutting device for plastic parts, the second support block is provided with a receiving groove, the end of the plastic part is placed in the receiving groove, and the inner wall of the receiving groove abuts against the outer wall of the plastic part.

[0017] In the aforementioned automatic gripping and cutting device for plastic parts, the cutting unit further includes:

[0018] Control panel;

[0019] A first driving component, wherein the movable frame is connected to the first driving component, and the first driving component is used to drive the movable frame to move;

[0020] A second driving component is disposed on the operating table. The first driving component is connected to the second driving component, and the output shaft of the first driving component is perpendicular to the output shaft of the second driving component. The second driving component is used to drive the first driving component to move.

[0021] In the above-mentioned automatic gripping and cutting device for plastic parts, the cutting unit further includes a protective cover, which is disposed on the operating table, and the protective cover has a hollow structure, with one end of the cutting part disposed in the hollow part and the other end extending downward.

[0022] In the above-mentioned automatic gripping and cutting device for plastic parts, a collecting component is also provided on the operating table. The collecting component is located below the cutting component and is used to collect the waste generated during cutting.

[0023] In the aforementioned automatic gripping and cutting device for plastic parts, the conveying unit further includes:

[0024] The gripper is detachably connected to the robotic arm;

[0025] The gripper has a connecting end and a working end. The gripper is connected to the robotic arm through the connecting end and grips or releases the plastic part through the working end.

[0026] In the above-mentioned automatic gripping and cutting device for plastic parts, a number of brackets are also provided on the side of the robot arm. Each bracket has a snap-fit ​​groove, and a gripper can be snapped into each snap-fit ​​groove. The connecting ends of each gripper are of the same specification and are used to adapt to the robot arm. The working ends of each gripper are of different specifications and are used to adapt to plastic parts of different specifications.

[0027] The technical solution adopted by this invention to solve its technical problem is to also propose a method for gripping and cutting plastic parts, including the following steps:

[0028] S1: Plastic parts are formed using an injection molding machine;

[0029] S2: The robotic arm in the transport unit drives the gripper to grab the molded plastic parts from the injection molding machine;

[0030] S3: The robotic arm transfers the plastic part to the moving frame of the cutting unit, so that both ends of the plastic part are placed on the first support block and the second support block respectively;

[0031] S4: The moving frame of the cutting unit moves the plastic part to below the cutting part;

[0032] S5: The cutting component cuts the plastic part, and the moving frame continues to move the plastic part along the preset path to achieve continuous cutting;

[0033] S6: After the cutting is completed, the cutting work stops, and the moving frame moves the cut plastic part to the preset gripping position;

[0034] S7: The robotic arm drives the gripper to grab the plastic parts on the moving frame and transport them to the conveyor belt;

[0035] S8: The conveyor belt transports the cut plastic parts to the preset position.

[0036] The technical solution adopted by this invention to solve its technical problem is to also propose a method for gripping and cutting plastic parts, including the following steps:

[0037] It significantly improved work efficiency, ensured cutting accuracy and quality consistency, enhanced operational safety, and reduced labor costs.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) By integrating the transport unit, cutting unit and conveyor belt, a fully automated operation process was constructed, from injection molding part picking, transfer and positioning, dynamic cutting to finished product delivery, realizing integrated continuous production of plastic parts processing. Compared with manual operation, it significantly improves production efficiency and operational safety, while ensuring the consistency of cutting accuracy and product quality, and effectively reducing reliance on manual labor and operating costs.

[0040] (2) A positioning pin is set on the moving frame of the cutting unit, and combined with the first groove, second groove, and protrusion combination structure on the first support block and the receiving groove on the second support block to form a multi-point collaborative positioning system, which realizes multiple limit and high-precision positioning of plastic parts, significantly improves the repeatability and stability of workpiece clamping, thereby ensuring the continuity of the laser cutting process and the consistency of the cut quality.

[0041] (3) A bracket equipped with a snap-fit ​​slot is set on the side of the robot arm, and various grippers with different working ends 21 but unified interfaces are configured. In conjunction with the rotating disengagement and docking actions of the robot arm, the automatic replacement of grippers of different specifications is realized. This design enhances the system's adaptability to the production of multiple varieties and variable batches of plastic parts, and improves the flexibility and automation level of the production line. Attached Figure Description

[0042] Figure 1 This is a 3D view of the proposed solution.

[0043] Figure 2 This is a 3D view of the cutting unit in this scheme.

[0044] Figure 3 yes Figure 2 A 3D view of the hidden part of the structure.

[0045] Figure 4 yes Figure 3 A 3D view of the hidden part of the structure.

[0046] Figure 5 This is a 3D view of the transport unit in this plan.

[0047] Figure 6 This is a 3D view of the support and gripper in this solution.

[0048] In the diagram, 1. Transport unit; 2. Gripper; 3. Cutting unit; 4. Moving frame; 5. Cutting component; 6. First support block; 7. Second support block; 8. Conveyor belt; 9. Positioning pin; 10. First groove; 11. Protrusion; 12. Second groove; 13. Receiving slot; 14. Operating table; 15. First drive component; 16. Second drive component; 17. Protective cover; 18. Collector; 19. Robotic arm; 20. Connecting end; 21. Working end; 22. Support; 23. Snap-fit ​​slot. Detailed Implementation

[0049] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] like Figures 1 to 6 As shown, this solution provides an automatic gripping and cutting device for plastic parts, comprising: a conveying unit 1, located on the side of an injection molding machine and having a movable gripper 2, the gripper 2 being used to grip and transport the molded plastic parts inside the injection molding machine; a cutting unit 3, located on one side of the conveying unit 1, the cutting unit 3 having a movable frame 4 and a cutting component 5; the movable frame 4 having a first support block 6 and a second support block 7, the first support block 6 being higher than the second support block 7 in the vertical direction, the two ends of the plastic parts being placed on the first support block 6 and the second support block 7 respectively, the movable frame 4 being used to move the plastic parts placed on the first support block 6 and the second support block 7; the cutting component 5 being located above the movable frame 4, being used to cut the plastic parts on the movable frame 4; and a conveyor belt 8, located on the other side of the conveying unit 1, being used to receive the cut plastic parts and transport them to a preset position.

[0052] During operation, the gripper 2 in the transport unit 1 enters the mold cavity area of ​​the injection molding machine according to a preset program. After ensuring that the plastic part has completely cooled and solidified, it accurately grips the molded plastic part. The gripper 2 usually adopts a flexible clamping structure or vacuum adsorption technology to avoid damage to the product surface, while ensuring the stability and reliability of the grip.

[0053] Subsequently, the gripper 2 smoothly transfers the plastic part to the movable frame 4 of the cutting unit 3. The movable frame 4 is equipped with a first support block 6 and a second support block 7, which are optimized according to the geometry and mechanical properties of the plastic part, so that the plastic part is tilted at a certain angle when placed. This tilted arrangement not only facilitates the natural sliding of waste during the cutting process, but also effectively reduces the impact of cutting heat on the support structure and improves the cutting quality.

[0054] Once the plastic part is accurately fixed on the moving frame 4, the moving frame 4 starts, transporting the plastic part to the processing area directly below the cutting head 5. Subsequently, the cutting head 5 starts, while the moving frame 4 moves the plastic part at a uniform or variable speed according to a preset cutting trajectory, thereby achieving continuous and dynamic cutting of the plastic part. Preferably, the cutting head 5 is a laser cutting head.

[0055] After cutting, the moving frame 4 moves again, transporting the cut plastic part to the designated unloading and gripping position. At this time, the gripper 2 of the conveying unit 1 intervenes again, accurately positioning and gripping the cut plastic part, and then placing it on the conveyor belt 8. The conveyor belt 8 transports the plastic part to the preset position.

[0056] The automated gripping and cutting device in this solution integrates gripping, transfer, cutting, and conveying functions, realizing an automated process for plastic parts from injection molding to cutting and sorting. Compared with traditional manual operation, this automated solution has multiple advantages: First, it significantly improves production cycle time and overall work efficiency; second, the cooperation between the cutting part 5 and the moving frame 4 ensures high consistency in dimensional accuracy and surface quality for each cut, reducing the defect rate; third, it effectively avoids safety hazards caused by manual contact with high temperatures, sharp parts, or high-speed moving equipment, significantly improving the safety level of the working environment; finally, in the long run, it significantly reduces reliance on skilled operators, saves labor costs, and helps enterprises achieve intelligent manufacturing upgrades.

[0057] In order to achieve the positioning of the plastic part on the moving frame 4, at least one positioning pin 9 is also provided on the moving frame 4. The positioning pin 9 is located between the first support block 6 and the second support block 7 and is inserted into the preset hole of the plastic part, which further improves the positioning accuracy and clamping stability of the plastic part during the cutting process.

[0058] First, the positioning pin 9 enables precise positioning of the plastic part on the moving frame 4. When the gripper 2 places the plastic part on the moving frame 4, even with slight placement deviations, the positioning pin 9 can guide the plastic part to automatically align with its correct processing position, ensuring consistency in each clamping.

[0059] Secondly, the positioning pin 9 engages with the process holes or structural holes on the plastic part to form a rigid connection, significantly enhancing the plastic part's vibration and displacement resistance during high-speed cutting. Especially at the moment of laser cutting start-up or during the high-speed movement of the moving frame 4, the plastic part may undergo slight deformation or slippage due to thermal stress, airflow disturbance, or inertial forces. The presence of the positioning pin 9 effectively restricts its degrees of freedom, preventing the plastic part from shifting, warping, or vibrating, thereby ensuring the accuracy of the cutting path and avoiding defects such as off-center cutting, broken cutting, or burrs.

[0060] Furthermore, this positioning structure simplifies the system's reliance on the absolute positioning accuracy of the gripper 2. Because the positioning pin 9 possesses a certain guiding and self-centering function, even if the gripper 2 of the transport unit 1 deviates slightly when placing the plastic part, the plastic part can still automatically correct itself as long as it remains within the guide range of the positioning pin 9. This not only reduces the stringent requirements for the repeatability of the robot arm 19 but also reduces the difficulty of equipment debugging and maintenance, improving the system's fault tolerance and operational stability.

[0061] More preferably, the first support block 6 has a first groove 10, a protrusion 11 and a second groove 12 arranged side by side, with the protrusion 11 located between the first groove 10 and the second groove 12.

[0062] When the plastic part is placed on the movable frame 4, its internal structure forms an interlocking fit with the protrusion 11, while its two side walls are respectively embedded in the first groove 10 and the second groove 12, with one side wall abutting against the inner wall of the first groove 10 and the other side wall having a clearance fit with the inner wall of the second groove 12. This structural design brings many significant benefits:

[0063] This structure achieves multiple limiting and high-precision positioning of the plastic part on the first support block 6. Through a combined "one convex, two concave" guide structure, the central convex 11 serves as the main positioning reference, inserted into the corresponding structure of the plastic part for positioning. One side wall tightly abuts against the inner wall of the first groove 10, forming a reference surface constraint and restricting the plastic part's degree of freedom in that direction. The other side wall uses a clearance fit with the second groove 12, allowing for some tolerance fluctuation during assembly, avoiding clamping difficulties or stress concentration due to over-positioning. This asymmetrical limiting method of "one side, one groove" ensures positioning accuracy while improving clamping reliability and adaptability.

[0064] More preferably, the second support block 7 is provided with a receiving groove 13, and the end of the plastic part is placed in the receiving groove 13, with the inner wall of the receiving groove 13 abutting against the outer wall of the plastic part. This further enhances the positioning accuracy and structural stability of the plastic part during the cutting process, bringing the following beneficial effects:

[0065] First, the accommodating groove 13 enables coordinated positioning of the plastic part at both ends on the moving frame 4. The first support block 6 achieves positioning and guidance through the structure of the first groove 10, the protrusion 11, and the second groove 12, while the accommodating groove 13 on the second support block 7 provides auxiliary positioning and limitation for the other end of the plastic part, forming a multi-point constrained support system. This positioning method with both ends working together significantly improves the overall spatial posture stability of the plastic part, effectively preventing it from shifting during movement or cutting, and ensuring that the plastic part maintains an ideal processing posture during continuous dynamic cutting.

[0066] Secondly, the inner wall of the receiving groove 13 abuts against the outer wall of the plastic part, forming a limiting structure that can effectively resist the vibration and impact forces generated during the cutting process due to laser heat, airflow disturbance, or acceleration and deceleration of the moving frame 4. This abutting structure can restrict the degree of freedom of the plastic part, preventing it from swaying or deviating slightly during movement, thereby ensuring the accuracy of the cutting path, reducing quality defects such as burrs on the cut edge and tilted cut, and improving the consistency of product appearance and assembly adaptability.

[0067] Furthermore, the depth and dimensions of the receiving groove 13 can be customized according to the geometric features of the plastic part's end, achieving a highly compatible enclosed support. This structure not only increases the support contact area and improves local rigidity, but also effectively disperses the stress concentration of the plastic part's own weight and dynamic load on the support point, reducing the risk of deformation or damage caused by excessive local stress. It is especially suitable for the precision machining of long, thin-walled, easily deformable plastic parts.

[0068] Meanwhile, the structure has good guiding and self-positioning functions. When the gripper 2 of the transport unit 1 places the plastic part on the moving frame 4, the open end of the receiving groove 13 can guide the end of the plastic part. Even if there is a slight placement deviation, it can automatically slide into the groove and complete the positioning under the action of gravity or slight thrust, which improves the reliability of clamping and the fault tolerance of automated operation, and reduces the requirements for the absolute positioning accuracy of the robot arm 19.

[0069] In summary, the second support block 7 is equipped with a receiving groove 13 that matches the end of the plastic part. This not only achieves coordinated positioning and rigid support at both ends of the plastic part, but also significantly improves clamping reliability, anti-interference ability and cutting accuracy. It is an important structural design to ensure the efficient, stable and high-quality operation of the automated cutting system, and has outstanding practical value and wide application adaptability.

[0070] More preferably, the cutting unit 3 further includes: an operating table 14; a first driving member 15, on which the movable frame 4 is connected, and the first driving member 15 drives the movable frame 4 to move; and a second driving member 16, which is disposed on the operating table 14, on which the first driving member 15 is connected, and the second driving member 16 drives the first driving member 15 to move, thereby driving the movable frame 4 connected thereto to move; wherein, the output axis direction of the second driving member 16 and the output axis direction of the first driving member 15 are perpendicular to each other in the horizontal plane, and the two constitute an orthogonal two-dimensional motion system. The first driving member 15 and the second driving member 16 are preferably linear guide rails.

[0071] During operation, the transport unit 1 controls the gripper 2 to place the plastic part to be processed onto the moving frame 4 located at the initial position (i.e., the loading / grabbing station). Subsequently, the first drive unit 15 and the second drive unit 16 work together to precisely transport the plastic part on the moving frame 4 to the initial cutting position directly below the cutting part 5 through the linkage control of two vertical directions on the horizontal plane.

[0072] Cutting component 5 is activated to cut the plastic part. During the cutting process, the first driving component 15 and the second driving component 16 move in real time in coordination according to the preset cutting trajectory, driving the moving frame 4 to move continuously along the preset path in the horizontal plane, thereby realizing the dynamic continuous cutting of the plastic part.

[0073] After cutting is completed, the first drive component 15 and the second drive component 16 work together again to drive the moving frame 4 back to its initial position. At this time, the cut plastic part is back in the preset gripping position. The gripper 2 moves to this position, grips the cut plastic part and transfers it to the conveyor belt 8. The conveyor belt 8 transports the plastic part to the preset position, while the gripper 2 returns to the injection molding machine for the next round of part picking.

[0074] To provide protection and positioning for the cutting component 5, the cutting unit 3 also includes a protective cover 17, which is fixed to the operating table 14 and has a cutout. One end of the cutting component 5 passes through the cutout, and the other end extends downward for cutting plastic parts on the movable frame 4.

[0075] By inserting a portion of the cutting component 5 into the hollowed-out section of the protective cover 17, its installation position is precisely defined, improving the structural rigidity and positioning stability of the cutting component 5. Simultaneously, the protective cover 17 partially covers the upper area of ​​the cutting component 5, effectively blocking external dust, oil, or accidental contact by operators, protecting the connecting lines and optical components of the cutting component 5, and significantly improving the safety of equipment operation and environmental cleanliness.

[0076] In order to collect the waste generated during the cutting operation, a collection device 18 is also provided on the operating table 14, which is located below the cutting device 5.

[0077] First, the collection unit 18 enables the directional collection and centralized management of cutting waste. During the cutting of plastic parts, material will form strips of scrap, flakes of residue, or granular splatter. Since the cutting operation occurs during the movement of the moving frame 4, the waste usually falls vertically or at an angle from the cut. Placing the collection unit 18 below the cutting part 5 allows for precise alignment with the cutting area, ensuring that the vast majority of waste falls directly into the collection unit 18 under gravity, preventing it from scattering on the bottom of the equipment or the workshop floor, and maintaining a clean and orderly working environment.

[0078] Secondly, this design significantly reduces the difficulty of equipment maintenance and cleaning costs. Without the dedicated collection component 18, waste would accumulate under the operating table 14 for a long time, which would not only be difficult to clean but could also clog or entangle transmission components, affecting normal operation and leading to equipment failure or positioning deviation. By setting up the collection component 18, waste can be collected and transported regularly or automatically, reducing downtime for maintenance and improving the continuity and reliability of equipment operation.

[0079] Furthermore, the collection component 18 helps improve workshop hygiene and safe production conditions. Plastic cutting waste is mostly lightweight, flammable organic matter. If scattered near high-temperature components (such as laser heads and motors), it poses a fire hazard. Simultaneously, fine particles may be dispersed by airflow, affecting air quality and endangering the health of operators. The collection component 18 collects and seals the waste immediately, effectively reducing fire risk and air pollution, meeting the modern factory's management requirements for green production and occupational health and safety.

[0080] To drive the movement of the gripper 2, the transport unit 1 also includes a robotic arm 19, with the gripper 2 detachably connected to an end effector on the robotic arm 19. The gripper 2 has a connecting end 20 and a working end 21. The gripper 2 is connected to the robotic arm 19 via the connecting end 20 and grips or releases plastic parts via the working end 21. The connecting end 20 has a standard threaded structure, allowing the gripper 2 to be quickly installed and removed.

[0081] Furthermore, several supports 22 are provided on the side of the robotic arm 19, each support 22 having a snap-fit ​​groove 23, in which a gripper 2 can be snapped. The connection ends 20 of all grippers 2 that connect to the robotic arm 19 use a uniform threaded interface to adapt to the end effector of the robotic arm 19; while the working ends 21 of each gripper 2 are designed with different specifications to adapt to different models or sizes of plastic parts, realizing flexible operation.

[0082] When it is necessary to change the gripper 2 to adapt to the handling needs of different plastic parts, the robot arm 19 first moves the currently used gripper 2 to the slot 23 of the target bracket 22, and then inserts the gripper 2 into the slot 23, so that the working end 21 of the gripper 2 is limited and fixed by the slot wall and cannot rotate freely.

[0083] Subsequently, the robotic arm 19 performs a reverse rotation. Since the gripper 2 body is limited by the locking groove 23, its connecting end 20 cannot move. Therefore, the robotic arm 19 and the gripper 2 rotate relative to each other, causing the threaded connection between them to gradually loosen until they are completely separated.

[0084] After separation, the robotic arm 19 continues to move to another bracket 22 equipped with a matching gripper 2, descends, and aligns with the connecting end 20 of the gripper 2. Then, the robotic arm 19 rotates forward to re-engage the threads, completing the connection. Next, the robotic arm 19 lifts upward, disengaging the gripper 2 from the locking slot 23, completing the gripper change operation.

[0085] Through the above structure, the robotic arm 19 can automatically switch between grippers 2 at different working ends 21, thereby improving the system's adaptability to the production of plastic parts of various specifications.

[0086] This solution also proposes a gripping and cutting method for plastic parts, including the following steps:

[0087] S1: Plastic parts are formed using an injection molding machine;

[0088] S2: The robotic arm 19 in the conveying unit 1 drives the gripper 2 to grab the molded plastic parts in the injection molding machine;

[0089] S3: The robotic arm 19 transfers the plastic part to the moving frame 4 of the cutting unit 3, so that the two ends of the plastic part are placed on the first support block 6 and the second support block 7 respectively;

[0090] S4: The moving frame 4 of the cutting unit 3 moves the plastic part to below the cutting part 5;

[0091] S5: Cutting component 5 cuts the plastic part, and moving frame 4 continues to move the plastic part along the preset path to achieve continuous cutting;

[0092] S6: After the cutting is completed, the cutting part 5 stops working, and the moving frame 4 moves the cut plastic part to the preset gripping position;

[0093] S7: The robotic arm 19 drives the gripper 2 to grab the plastic parts on the moving frame 4 and transport them to the conveyor belt 8;

[0094] S8: Conveyor belt 8 transports the cut plastic parts to the preset position.

[0095] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0096] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0097] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An automatic gripping and cutting device for plastic parts, characterized in that, include: A conveying unit located on the side of the injection molding machine and having a movable gripper for gripping and conveying the molded plastic parts inside the injection molding machine; A cutting unit is disposed on one side of the conveying unit, the cutting unit having a movable frame and a cutting component; The movable frame is provided with a first support block and a second support block. The first support block is higher than the second support block in the vertical direction. The two ends of the plastic part are respectively placed on the first support block and the second support block. The movable frame is used to drive the plastic part to move. The cutting component is located above the movable frame and is used to cut the plastic parts on the movable frame; A conveyor belt, located on the other side of the transport unit, is used to receive the cut plastic parts and transport them to a preset position.

2. The automatic gripping and cutting device for plastic parts as described in claim 1, characterized in that, The movable frame is also provided with at least one positioning pin, which is located between the first support block and the second support block and is inserted into the plastic part to provide positioning for the plastic part.

3. The automatic gripping and cutting device for plastic parts as described in claim 1, characterized in that, The first support block has a first groove, a protrusion and a second groove arranged side by side, with the protrusion located between the first groove and the second groove; When the plastic part is placed on the movable frame, the protrusion is inserted into the plastic part, one side wall of the plastic part is located in the first groove and abuts against the inner side wall of the first groove, and the other side wall is located in the second groove.

4. The automatic gripping and cutting device for plastic parts as described in claim 1, characterized in that, The second support block is provided with a receiving groove, and the end of the plastic part is placed in the receiving groove, with the inner wall of the receiving groove abutting against the outer wall of the plastic part.

5. The automatic gripping and cutting device for plastic parts as described in claim 1, characterized in that, The cutting unit further includes: Control panel; A first driving component, wherein the movable frame is connected to the first driving component, and the first driving component is used to drive the movable frame to move; A second driving component is disposed on the operating table. The first driving component is connected to the second driving component, and the output shaft of the first driving component is perpendicular to the output shaft of the second driving component. The second driving component is used to drive the first driving component to move.

6. The automatic gripping and cutting device for plastic parts as described in claim 5, characterized in that, The cutting unit also includes a protective cover, which is disposed on the operating table, and the protective cover has a hollow structure. One end of the cutting component is disposed in the hollow part, and the other end extends downward.

7. The automatic gripping and cutting device for plastic parts as described in claim 5, characterized in that, The operating platform is also equipped with a collection device located below the cutting device, which is used to collect waste generated during cutting.

8. The automatic gripping and cutting device for plastic parts as described in claim 1, characterized in that, The transport unit also includes: The gripper is detachably connected to the robotic arm; The gripper has a connecting end and a working end. The gripper is connected to the robotic arm through the connecting end and grips or releases the plastic part through the working end.

9. The automatic gripping and cutting device for plastic parts as described in claim 8, characterized in that, The robotic arm is also provided with several brackets on its side. Each bracket has a snap-fit ​​groove, and each snap-fit ​​groove can snap a gripper into it. The connecting ends of each gripper are of the same specification and are used to adapt to the robotic arm. The working ends of each gripper are of different specifications and are used to adapt to plastic parts of different specifications.

10. A method for gripping and cutting plastic parts, characterized in that, Including the following steps: S1: Plastic parts are formed using an injection molding machine; S2: The robotic arm in the transport unit drives the gripper to grab the molded plastic parts from the injection molding machine; S3: The robotic arm transfers the plastic part to the moving frame of the cutting unit, so that both ends of the plastic part are placed on the first support block and the second support block respectively; S4: The moving frame of the cutting unit moves the plastic part to below the cutting part; S5: The cutting component cuts the plastic part, and the moving frame continues to move the plastic part along the preset path to achieve continuous cutting; S6: After the cutting is completed, the cutting work stops, and the moving frame moves the cut plastic part to the preset gripping position; S7: The robotic arm drives the gripper to grab the plastic parts on the moving frame and transport them to the conveyor belt; S8: The conveyor belt transports the cut plastic parts to the preset position.

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