Mechanical arm for grabbing EVA (Ethylene Vinyl Acetate) ingredient bag

Abstract

The utility model discloses an EVA ingredient bag grabbing mechanical arm which comprises a pair of supports, the bottoms of the supports are fixedly connected with a base, the tops of the supports are fixedly connected with guide rails, the tops of the guide rails are fixedly connected with a pair of fixing plates, one fixing plate is provided with a motor, the output end of the motor is provided with a lead screw, and the output end of the lead screw is provided with a lead screw. A guide rail is arranged on the base, a sliding block is connected to the guide rail in a sliding mode, a transmission hole and a movable groove are formed in the sliding block, the lead screw penetrates through the transmission hole, the guide rail penetrates through the movable groove, a mounting plate is fixedly connected to the bottom of the sliding block, and a lifting assembly is arranged below the mounting plate. According to the device, stable grabbing can be achieved, the situation of grabbing deviation, slipping or unstable grabbing is effectively avoided, the modular design is adopted, related parts are convenient to disassemble and replace, the maintenance difficulty is low, and after being grabbed, EVA ingredient bags are transferred stably and are not prone to shaking or bumping.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical arms, in particular to an EVA ingredient bag grabbing mechanical arm. Background Art

[0002] EVA bags are made of ethylene-vinyl acetate (EVA) and are used to store and transport various ingredients or materials. EVA is known for its excellent flexibility, corrosion resistance, chemical resistance, and transparency. Therefore, EVA bags are suitable for packaging applications due to their chemical stability, flexibility, transparency, environmental friendliness, and low-temperature resistance.

[0003] During the transfer process, EVA batching bags need to be grabbed with the help of equipment such as a robotic arm. Currently, there are some robotic arm structures on the market. For example, a grabbing robotic arm with the announcement number CN220218558U is disclosed on the China Patent Network. This robotic arm can be used to grab EVA batching bags, but there are some defects and deficiencies that need to be improved: (1) Due to the structural design of some existing robotic arms, the gripper parts often have difficulty in achieving stable grabbing of flexible materials (such as EVA batching bags) and irregularly shaped objects, resulting in grabbing deviation, slippage or unstable grabbing; (2) Some existing robotic arms have relatively complex structures and are mostly integrated designs. The various components are difficult to disassemble, resulting in high maintenance costs for the robotic arms, and it is also inconvenient to replace the relevant components separately when the robotic arms malfunction; (3) When some existing robotic arms grab EVA batching bags and transfer them, the robotic arms are prone to shaking or bumping during the transfer process, causing the EVA batching bags to slip or shift easily. Therefore, in order to solve the above problems, the EVA ingredient bag grabbing robot arm provided by the present invention is of great significance. Utility Model Content

[0004] The utility model provides an EVA ingredient bag grabbing robot arm, which can grab the EVA ingredient bag through a grabbing component, and by improving the clamping claws, it can be fully fitted with the EVA ingredient bag and supported on the bottom of the EVA ingredient bag, thereby achieving stable grabbing and effectively avoiding grabbing deviation, slipping or unstable grabbing; through modular design, each component can be disassembled at will according to needs, thereby effectively reducing the maintenance difficulty, and the relevant components that have malfunctioned can be quickly replaced separately; the slider can be limited by the mutual cooperation between the guide block and the guide groove, so as to improve the stability of the slider when sliding left and right, thereby preventing the grabbing component from shaking or bumping during the transfer process, which may cause the EVA ingredient bag to slip or be displaced. In summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model discloses an EVA ingredient bag grabbing robot arm, comprising a pair of brackets, wherein the bottom of the brackets is fixedly connected to a base, and the top of the brackets is fixedly connected to a guide rail, and the top of the guide rails is fixedly connected to a pair of fixed plates, one of which is mounted with a motor, and the output end of the motor is mounted with a lead screw, and a slider is slidably connected to the guide rails, and a transmission hole and a movable groove are respectively provided on the sliders, the transmission hole is located above the movable groove, and the hole wall thereof is engraved with an internal thread matching with the lead screw, the lead screw passes through the transmission hole, and the guide rail passes through the movable groove, the bottom of the slider is fixedly connected to a mounting plate, and a lifting assembly is provided below the mounting plate;

[0007] The lifting assembly includes an electric telescopic rod, which is mounted on the bottom of the mounting plate. The bottom end of the output shaft of the electric telescopic rod is fixedly connected to the lifting frame. Second mounting holes are opened on both sides of the lifting frame. Screws are inserted into the second mounting holes. The screws are threadedly connected to the second nuts that match them. A grabbing assembly is provided below the lifting frame.

[0008] The grabbing assembly includes a mounting seat with a through hole formed on the mounting seat, and a grabbing frame is fixedly connected to the bottom of the mounting seat. Cylinders are installed on both sides of the grabbing frame, and the ends of the output shafts of the cylinders are fixedly connected to clamping claws.

[0009] Furthermore, the clamping jaw is L-shaped, and a plurality of anti-slip strips are provided on the side wall surface of the clamping jaw. The anti-slip strips are L-shaped and are distributed linearly at equal distances along the width direction of the clamping jaw, and the surface of the anti-slip strips is engraved with herringbone anti-slip patterns.

[0010] Furthermore, a plurality of studs are fixedly connected to the bottom of the mounting plate, and a first nut matching the stud is threadedly connected to each of the studs. A plurality of mounting blocks are fixedly connected to the top side wall of the electric telescopic rod, and the number of the mounting blocks is the same as the studs. A first mounting hole is formed on each of the mounting blocks, and the aperture of the first mounting hole is equal to the diameter of the stud, and the center of each first mounting hole corresponds one-to-one to the center of each stud.

[0011] Furthermore, the through hole and the second mounting hole have the same diameter, and the center of the through hole and the center of the second mounting hole are located on the same straight line.

[0012] Furthermore, a plurality of positioning blocks are fixedly connected to the bottom of the lifting frame, and a plurality of positioning grooves are provided on the top surface of the mounting seat. The positioning grooves are the same in number and shape as the positioning blocks, and are equal in size, and the center of each positioning groove corresponds one-to-one to the center of each positioning block.

[0013] Furthermore, the front and rear faces of the guide rail are both provided with guide grooves, and the inner walls on both sides of the movable groove are fixedly connected with guide blocks. The guide blocks and guide grooves are both rectangular and have equal widths, and each guide block fits in the corresponding guide groove.

[0014] Furthermore, the front end surface and the rear end surface of the bottom of the bracket are both fixedly connected with reinforcement blocks, and the reinforcement blocks are triangular, and the bottoms thereof are fixedly connected to the base.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) When in use, the EVA ingredient bag grabbing robot arm of the utility model can grab the EVA ingredient bag through the grabbing component. By improving the clamping claw, it can be fully fitted with the EVA ingredient bag and supported on the bottom of the EVA ingredient bag, thereby achieving stable grabbing and effectively avoiding the grabbing deviation, slipping or unstable grasping;

[0017] (2) When in use, the EVA ingredient bag grabbing robot arm of the utility model has a modular design, and each component can be disassembled at will as needed, thereby effectively reducing the difficulty of maintenance and allowing the relevant components that have failed to be quickly replaced separately;

[0018] (3) When the EVA ingredient bag grabbing robot arm in the present invention is in use, the slider can be limited by the mutual cooperation between the guide block and the guide groove, so as to improve the stability of the slider when sliding left and right, thereby preventing the grabbing component from shaking or bumping during the transfer process, which may cause the EVA ingredient bag to slip or move.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural diagram of an EVA ingredient bag grabbing mechanical arm of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the bracket and the guide rail in the utility model;

[0023] Figure 3 This is a structural diagram of the slider in the utility model;

[0024] Figure 4 This is a side view of the slider in the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the lifting assembly in the utility model;

[0026] Figure 6 It is a structural diagram of the grabbing component in the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Bracket; 2. Base; 3. Guide rail; 4. Fixed plate; 5. Motor; 6. Screw; 7. Slider; 8. Transmission hole; 9. Movable slot; 10. Mounting plate; 11. Electric telescopic rod; 12. Lifting frame; 13. Second mounting hole; 14. Screw; 15. Second nut; 16. Mounting seat; 17. Through hole; 18. Grabbing frame; 19. Cylinder; 20. Clamp; 21. Anti-slip strip; 22. Stud; 23. First nut; 24. Mounting block; 25. First mounting hole; 26. Positioning block; 27. Positioning slot; 28. Guide slot; 29. ​​Guide block; 30. Reinforcement block. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] See also Figure 1-6As shown, an EVA ingredient bag grabbing robot arm of the present invention comprises a pair of brackets 1, the bottom of the bracket 1 is fixedly connected to a base 2, and the top of the bracket 1 is fixedly connected to a guide rail 3, the top of the guide rail 3 is fixedly connected to a pair of fixed plates 4, one of which is equipped with a motor 5, and the output end of the motor 5 is equipped with a lead screw 6, a slider 7 is slidably connected to the guide rail 3, and a transmission hole 8 and a movable groove 9 are respectively provided on the slider 7, the transmission hole 8 is located above the movable groove 9, and the hole wall thereof is engraved with an internal thread matching the lead screw 6, the lead screw 6 passes through the transmission hole 8, and the guide rail 3 passes through the movable groove 9, and the lead screw 6 can be driven to rotate by driving the motor 5. When the lead screw 6 rotates, the slider 7 can be driven to slide left and right along the guide rail 3 through the transmission hole 8, so as to transfer the EVA ingredient bag after grabbing, and the bottom of the slider 7 is fixedly connected to a mounting plate 10, and a lifting assembly is provided below the mounting plate 10;

[0032] The lifting assembly includes an electric telescopic rod 11, which is mounted on the bottom of the mounting plate 10. The bottom end of the electric telescopic rod 11 is fixedly connected to a lifting frame 12. Second mounting holes 13 are opened on both sides of the lifting frame 12. Screws 14 are inserted into the second mounting holes 13. Second nuts 15 are threadedly connected to the screws 14 to match them. A grabbing assembly is provided below the lifting frame 12. By driving the electric telescopic rod 11, the lifting frame 12 and the grabbing assembly can be moved up and down together, so that the grabbing assembly can grab the EVA bag.

[0033] The grabbing assembly includes a mounting base 16, which has a through hole 17, and a grabbing frame 18 is fixedly connected to the bottom of the mounting base 16. Cylinders 19 are installed on both sides of the grabbing frame 18, and the end of the output shaft of the cylinder 19 is fixedly connected to a clamping claw 20. By driving the cylinder 19, the clamping claws 20 on both sides can be driven to move. When the clamping claws 20 contact the EVA ingredient bag, the EVA ingredient bag can be grabbed.

[0034] Among them, the clamping jaw 20 is L-shaped, and a number of anti-slip strips 21 are provided on the side wall surface of the clamping jaw 20. The anti-slip strips 21 are L-shaped and are equidistantly linearly distributed along the width direction of the clamping jaw 20. The surface of the anti-slip strips 21 is engraved with herringbone anti-slip patterns. The clamping jaw 20 can fully fit with the EVA ingredient bag and be supported on the bottom of the EVA ingredient bag, thereby achieving stable grasping and effectively avoiding grasping deviation, slipping or unstable grasping. The anti-slip patterns on the surface of each anti-slip strip 21 can increase the friction between the EVA ingredient bag and the clamping jaw 20 to play an anti-slip role, thereby further improving the grasping stability of the clamping jaw 20.

[0035] Among them, a plurality of studs 22 are fixedly connected to the bottom of the mounting plate 10, and each stud 22 is threadedly connected to a first nut 23 that matches it. A plurality of mounting blocks 24 are fixedly connected to the top side wall of the electric telescopic rod 11. The number of mounting blocks 24 is the same as the studs 22, and each mounting block 24 is provided with a first mounting hole 25. The aperture of the first mounting hole 25 is equal to the diameter of the stud 22, and the center of each first mounting hole 25 corresponds one-to-one with the center of each stud 22. Each stud 22 can be aligned with and pass through the first mounting hole 25 on the corresponding mounting block 24. At this time, the first nut 23 is threadedly connected to each stud 22 and tightened. The electric telescopic rod 11 can be fixedly mounted on the bottom of the mounting plate 10 together with the entire lifting assembly through the mutual cooperation between the stud 22, the first mounting hole 25, and the first nut 23. The lifting assembly can be removed by unscrewing the first nut 23, so that the lifting assembly can be regularly maintained and quickly replaced.

[0036] Among them, the aperture of the through hole 17 is equal to that of the second mounting hole 13, and the center of the through hole 17 is located on the same straight line as the center of the second mounting hole 13. The screw 14 can pass through the second mounting hole 13 and the through hole 17 respectively. At this time, the second nut 15 is threadedly connected to the screw 14 and tightened. The mounting seat 16 can be fixed together with the entire grabbing assembly on the bottom of the lifting frame 12 through the mutual cooperation between the screw 14, the second mounting hole 13, the through hole 17, and the second nut 15. The grabbing assembly can be removed by unscrewing the second nut 15, so that the grabbing assembly can be regularly maintained and quickly replaced.

[0037] Among them, a number of positioning blocks 26 are fixedly connected to the bottom of the lifting frame 12, and a number of positioning grooves 27 are opened on the top surface of the mounting seat 16. The positioning grooves 27 are the same in number and shape as the positioning blocks 26, and the sizes are equal. The center of each positioning groove 27 corresponds one-to-one with the center of each positioning block 26. When the grabbing assembly is installed and fixed, each positioning block 26 can be aligned and inserted into the corresponding positioning groove 27. At this time, the mutual cooperation between the positioning block 26 and the positioning groove 27 can play a positioning role, so as to improve the stability of the grabbing assembly after installation, thereby preventing it from loosening.

[0038] Among them, the front end face and the rear end face of the guide rail 3 are both provided with a guide groove 28, and the inner walls on both sides of the movable groove 9 are fixedly connected with a guide block 29. The guide block 29 and the guide groove 28 are both rectangular and have equal widths, and each guide block 29 fits in the corresponding guide groove 28. When the EVA ingredient bag is transferred after being grasped, the slider 7 can drive the guide block 29 to slide along the guide groove 28. At this time, the slider 7 can be limited by the mutual cooperation between the guide block 29 and the guide groove 28 to improve the stability of the slider 7 when sliding left and right, thereby preventing the grasping component from shaking or bumping during the transfer process, causing the EVA ingredient bag to slip or displace.

[0039] Among them, the front end face and the rear end face of the bottom of the bracket 1 are fixedly connected with a reinforcement block 30. The reinforcement block 30 is triangular, and its bottom is fixedly connected to the base 2. The reinforcement block 30 can support and reinforce the bracket 1 to improve the structural strength of the bracket 1, thereby preventing it from bending or deforming after being subjected to stress for a long time.

[0040] The circuits, electronic components and chip modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0041] The standard parts used in the application documents can all be purchased on the market. All the components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The electrical components appearing in this article are all electrically connected to the external main controller and 220V AC power, and the main controller is a conventional known device that can play a control role.

[0042] The working principle of this utility model is:

[0043] When the utility model is in use, the electric telescopic rod 11 can be driven to drive the lifting frame 12 to move downward together with the grabbing assembly, until the grabbing frame 18 moves to the height of the EVA ingredient bag to be grabbed, and the cylinders 19 on both sides of the grabbing frame 18 are driven to respectively drive the clamping claws 20 on both sides to move toward the direction of the EVA ingredient bag, until the clamping claws 20 contact the EVA ingredient bag, and the EVA ingredient bag can be grabbed. The clamping claws 20 are L-shaped, which can fully fit the EVA ingredient bag and support the bottom of the EVA ingredient bag, thereby achieving stable grabbing, effectively avoiding the situation of grabbing deviation, slipping or unstable grabbing, and the ... The side wall surface of the claw 20 is provided with several anti-slip strips 21. The anti-slip patterns on the surface of each anti-slip strip 21 can increase the friction between the EVA ingredient bag and the clamping claw 20 to play an anti-slip role, thereby further improving the grasping stability of the clamping claw 20. When the clamping claw 20 completes the grasping of the EVA ingredient bag, it drives the electric telescopic rod 11 again and drives the lifting frame 12 to move upward together with the grasping assembly, and then drives the motor 5 to drive the screw 6 to rotate. When the screw 6 rotates, it can drive the slider 7 to slide left and right along the guide rail 3 through the transmission hole 8 to transfer the grasped EVA ingredient bag.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An EVA ingredient bag grabbing robot arm, characterized in that: The invention comprises a pair of brackets, the bottom of the brackets is fixedly connected to a base, and the top of the brackets is fixedly connected to a guide rail, the top of the guide rails is fixedly connected to a pair of fixed plates, one of the fixed plates is mounted with a motor, the output end of the motor is mounted with a lead screw, a slider is slidably connected to the guide rails, a transmission hole and a movable groove are respectively provided on the sliders, the transmission hole is located above the movable groove, and the hole wall thereof is engraved with an internal thread matching with the lead screw, the lead screw passes through the transmission hole, the guide rail passes through the movable groove, the bottom of the slider is fixedly connected to a mounting plate, and a lifting assembly is provided below the mounting plate; The lifting assembly includes an electric telescopic rod, which is mounted on the bottom of the mounting plate. The bottom end of the output shaft of the electric telescopic rod is fixedly connected to the lifting frame. Second mounting holes are opened on both sides of the lifting frame. Screws are inserted into the second mounting holes. The screws are threadedly connected to the second nuts that match them. A grabbing assembly is provided below the lifting frame. The grabbing assembly includes a mounting seat with a through hole formed on the mounting seat, and a grabbing frame is fixedly connected to the bottom of the mounting seat. Cylinders are installed on both sides of the grabbing frame, and the ends of the output shafts of the cylinders are fixedly connected to clamping claws.

2. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: The clamping jaw is L-shaped, and a plurality of anti-slip strips are provided on the side wall surface of the clamping jaw. The anti-slip strips are L-shaped and are linearly distributed at equal distances along the width direction of the clamping jaw, and the surface of the anti-slip strips is engraved with herringbone anti-slip patterns.

3. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: A plurality of studs are fixedly connected to the bottom of the mounting plate, and a first nut matching the stud is threadedly connected to each of the studs. A plurality of mounting blocks are fixedly connected to the top side wall of the electric telescopic rod, and the number of the mounting blocks is the same as the studs. A first mounting hole is formed on each of the mounting blocks, and the aperture of the first mounting hole is equal to the diameter of the stud, and the center of each of the first mounting holes corresponds one-to-one to the center of each stud.

4. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: The through hole and the second mounting hole have the same diameter, and the center of the through hole and the center of the second mounting hole are located on the same straight line.

5. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: A plurality of positioning blocks are fixedly connected to the bottom of the lifting frame, and a plurality of positioning grooves are opened on the top surface of the mounting seat. The positioning grooves are the same in number and shape as the positioning blocks, and are equal in size, and the center of each positioning groove corresponds one-to-one to the center of each positioning block.

6. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: The front end face and the rear end face of the guide rail are both provided with guide grooves, and the inner walls on both sides of the movable groove are fixedly connected with guide blocks. The guide blocks and the guide grooves are both rectangular and have equal widths, and each guide block fits in the corresponding guide groove.

7. The EVA ingredient bag grabbing robot arm according to claim 1, characterized in that: The front end surface and the rear end surface of the bottom of the bracket are both fixedly connected with reinforcement blocks. The reinforcement block is triangular, and the bottom of the reinforcement block is fixedly connected to the base.

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