A feeding mechanism for automobile parts processing

Abstract

The present invention discloses a feeding mechanism for processing automobile parts, which includes a guide shell, a lifting assembly and a pneumatic assembly. The feeding mechanism is implemented by installing a vacuum suction cup on the lifting assembly, installing the pneumatic assembly in the guide hole, installing the lifting assembly on the guide shell, and then transmittingly connecting the pneumatic assembly to the lifting assembly. When the feeding mechanism is applied to a workpiece with a large curvature, after the vacuum suction cup closest to the highest point of the curved surface adsorbs the workpiece, the other vacuum suction cups drive the pneumatic assembly to rotate through the airflow, and then drive the vacuum suction cups to approach the workpiece surface located below them, so as to shorten the distance between the vacuum suction cups and the workpiece surface, thereby forming a powerful grip on multiple points on the curved workpiece surface.

Description

Technical Field

[0001] The present invention relates to the technical field of automated processing, in particular to a feeding mechanism for processing automobile parts. Background Art

[0002] Many automotive parts feature multiple structures, such as curved surfaces, openings, or bends. For example, the trunk lid has multiple bends and grooves. These complex structures require multiple machining steps during processing. Between each process, these parts are typically transferred to the next by a loading mechanism. Existing loading mechanisms, particularly for thin-walled parts, typically use a robot equipped with multiple vacuum cups to transfer the workpiece.

[0003] However, in the existing vacuum suction cup loading mechanism, multiple vacuum suction cups are usually integrated on the same mounting plate or mounting frame, so that the gripping surfaces of the vacuum suction cups are all located on the same plane and can only grip flat workpieces. Although the suction cups are usually made of soft materials that can undergo elastic deformation to grip workpieces with slightly curved surfaces, when applied to workpieces with larger curvatures, it is easy for only the vacuum suction cups close to the highest point of the curved surface to contact the workpiece surface. As the suction cups at other positions move away from the highest point of the curved surface, the distance between the vacuum suction cups and the workpiece surface increases, resulting in the vacuum suction cups being unable to tightly adsorb on the workpiece and unable to form a strong grip on multiple points on the curved workpiece surface. Summary of the Invention

[0004] The main purpose of the present invention is to propose a feeding mechanism for automobile parts processing, aiming to solve the technical problem in the prior art that the vacuum suction cup on the feeding mechanism cannot move, thereby failing to form a strong grip on multiple points on the surface of the curved workpiece.

[0005] To achieve the above-mentioned objectives, the present invention proposes a loading mechanism for automobile parts processing, comprising: a guide housing, which is mounted on a robotic arm and has a guide hole formed therein, the guide hole being used to connect with a vacuum pump; a lifting assembly, which is mounted on the guide housing and has a vacuum suction cup movably mounted on the lifting assembly, the vacuum suction cup being connected with the vacuum pump through the guide hole; a pneumatic assembly, which includes a pneumatic impeller, a portion of which is rotatably arranged in the guide hole, and the other portion of the pneumatic impeller passes through the side wall of the guide hole and is transmission-connected with the lifting assembly; when air flows through the guide hole, the airflow drives the pneumatic impeller located in the guide hole to rotate, and causes the pneumatic impeller to drive the vacuum suction cup on the lifting assembly to move.

[0006] Optionally, a first installation cavity is further provided in the guide housing, and the first installation cavity is arranged on one side of the guide hole, and the first installation cavity is connected to the guide hole through a connecting hole; the pneumatic assembly also includes a first bevel gear and a second bevel gear that are meshed with each other, and the pneumatic impeller has a rotating shaft and blades, and the blades of the pneumatic impeller are located in the guide hole; the first bevel gear and the second bevel gear are located in the first installation cavity, and the rotating shaft of the pneumatic impeller passes through the connecting hole and is transmission-connected to the first bevel gear, and the second bevel gear is transmission-connected to the lifting assembly.

[0007] Optionally, the lifting assembly includes a screw and a screw nut, the screw nut is movably mounted on the screw, the screw is rotatably mounted on the guide housing, the screw portion is located outside the guide housing, and the portion of the screw located inside the guide housing passes through the first mounting cavity; the second bevel gear is fixedly mounted on the screw; the screw nut is movably mounted on the portion of the screw located outside the guide housing, and the vacuum suction cup is mounted on the screw nut.

[0008] Optionally, the lifting assembly also includes a first limit seat, a second limit seat, a base plate and a guide slide rail, the first limit seat is installed on the bottom end surface of the guide shell, the base plate is installed on the side wall of the first limit seat, the second limit seat is installed on the base plate, and the first limit seat and the second limit seat are located at both ends of the same side of the base plate; the guide slide rail is installed on the base plate and is located between the first limit seat and the second limit seat; one end of the screw rod is rotatably installed on the guide shell, and the other end passes through the first limit seat and is rotatably installed on the second limit seat; the screw rod nut is slidably installed on the guide slide rail.

[0009] Optionally, a second installation cavity is also provided in the guide shell, the second installation cavity is coaxially arranged with the guide hole, and the guide hole passes through the second installation cavity; limiting grooves and connecting holes are respectively provided on both sides of the second installation cavity, the blades of the pneumatic impeller are installed on the rotating shaft and are located in the second installation cavity, and the end of the pneumatic impeller away from the first bevel gear can be rotatably installed in the limiting groove.

[0010] Optionally, the diameter of the guide hole at one end close to the vacuum suction cup is smaller than the diameter of the hole at the end away from the vacuum suction cup; the pneumatic impeller is a vortex impeller, and the width of the vortex impeller blades is greater than the diameter of the guide hole.

[0011] Optionally, a ratchet is installed on the screw rod, a first installation groove is opened in the guide housing, and the ratchet is located in the first installation groove; a pawl is movably installed in the first installation groove, and one end of the pawl abuts the ratchet.

[0012] Optionally, the first mounting groove is connected to the guide hole through the connecting groove; an elastic diaphragm is provided in the connecting groove, which divides the connecting groove into two independent spaces; the elastic diaphragm is transmission-connected to the end of the pawl away from the ratchet wheel.

[0013] Optionally, the elastic diaphragm is connected to one end of the first connecting rod, and the other end of the first connecting rod is hingedly connected to the second connecting rod; the other end of the second connecting rod is hingedly connected to the pawl; the middle part of the second connecting rod can be rotatably installed in the first mounting groove; two limiting protrusions are also provided in the first mounting groove, and a gap for the movement of the pawl is formed between the two limiting protrusions.

[0014] Optionally, a second mounting slot is provided in the guide housing, and a coil spring is installed on the screw rod; one end of the coil spring is fixedly installed in the second mounting slot, and the other end is connected to the screw rod; the second bevel gear is located above the second mounting slot.

[0015] The technical solution of the present invention is to install the vacuum suction cup on the lifting assembly, install the pneumatic assembly in the guide hole, install the lifting assembly on the guide housing, and then connect the pneumatic impeller of the pneumatic assembly to the lifting assembly; when working, the vacuum pump is started to drive the air in the guide hole to flow, so that the air drives the pneumatic impeller to rotate, and then the pneumatic impeller drives the lifting assembly to move, so that the vacuum suction cup installed on the lifting assembly descends; when used for grabbing workpieces with curved surfaces, when the vacuum suction cup does not contact the surface of the workpiece, the suction cup body of the vacuum suction cup cannot be adsorbed to the surface of the workpiece At this time, the guide hole always maintains a passage, and the external air flow will continuously enter and pass through the guide hole from the vacuum suction cup under the extraction of the vacuum pump, so that the pneumatic impeller keeps rotating, and the rotation of the pneumatic impeller will continue to drive the vacuum suction cup to move and approach the workpiece below it, until the vacuum suction cup contacts the surface of the workpiece, and the air between the vacuum suction cup and the workpiece surface is extracted by the vacuum pump, forming a vacuum, so that the vacuum suction cup tightly adsorbs the workpiece surface under the action of atmospheric pressure. After the vacuum suction cup tightly adsorbs the workpiece surface, there is no air flow through the guide hole, and the pneumatic impeller stops rotating. When the feeding mechanism of the present invention is applied to a workpiece with a larger curvature, after the vacuum suction cup closest to the highest point of the arc surface adsorbs the workpiece, the other vacuum suction cups drive the pneumatic impeller to rotate through the air flow, and then drive the vacuum suction cup close to the workpiece surface below it, so as to shorten the distance between the vacuum suction cup and the workpiece surface, thereby forming a powerful grip on multiple points on the surface of the arc workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2It is a side view schematic diagram of the present invention;

[0019] Figure 3 Schematic diagram of the distribution of vacuum suction cups on the guide shell;

[0020] Figure 4 This is a schematic diagram of the distribution of vacuum suction cups when grasping a curved workpiece in the present invention;

[0021] Figure 5 It is a three-dimensional schematic diagram of the vacuum suction cup installation structure;

[0022] Figure 6 It is a side view schematic diagram of the vacuum suction cup installation structure;

[0023] Figure 7 It is a top view schematic diagram of the vacuum suction cup installation structure;

[0024] Figure 8 for Figure 6 Schematic cross-sectional view of AA in the figure;

[0025] Figure 9 for Figure 7 Schematic cross-sectional view of the middle BB;

[0026] Figure 10 for Figure 8 Enlarged schematic diagram of the middle C area;

[0027] Figure 11 for Figure 9 Enlarged schematic diagram of region D in the middle;

[0028] Figure 12 This is an exploded diagram of the guide housing, lifting assembly, and vacuum suction cup;

[0029] Figure 13 It is a cross-sectional schematic diagram of a three-dimensional diagram of a flow guide housing;

[0030] Figure 14 It is a schematic cross-sectional view of the plan view of the guide shell.

[0031] Description of Figure Numbers:

[0032] 1. Robotic arm; 11. Connecting plate; 2. Guide housing; 21. Housing cover; 22. Guide block; 221. Guide hole; 222. Second mounting cavity; 222a. Limiting groove; 222b. Connecting hole; 223. Bearing mounting hole; 224. First mounting groove; 225. First mounting cavity; 226. Connecting groove; 227. Second mounting groove; 3. Vacuum suction cup; 31. Inlet pipe; 32. Suction cup body; 4. Lifting assembly; 41. First limiting groove Seat; 42. Second limiting seat; 43. Bottom plate; 44. Screw nut; 45. Screw; 451. Rolling bearing; 452. Ratchet; 453. Coil spring; 46. Mounting seat; 47. Guide rail; 5. Pneumatic assembly; 51. Pneumatic impeller; 52. First bevel gear; 53. Second bevel gear; 6. Air pipe joint; 7. Elastic diaphragm; 71. First connecting rod; 72. Second connecting rod; 73. Ratchet; 74. Limiting protrusion; 8. Arc workpiece.

[0033] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, and must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The invention provides a feeding mechanism for processing automobile parts.

[0038] In this embodiment, if Figures 1 to 9 As shown, the loading mechanism includes a guide shell 2, a lifting assembly 4 and a pneumatic assembly 5; the guide shell 2 is installed on the robot arm 1, and a guide hole 221 is opened in the guide shell 2, and the two ends of the guide hole 221 are respectively connected to the vacuum pump and the vacuum suction cup 3; one end of the lifting assembly 4 is installed on the guide shell 2, and the vacuum suction cup 3 is installed on the other end; the pneumatic assembly 5 includes a pneumatic impeller 51, one end of the pneumatic impeller 51 is rotatably arranged in the guide hole 221, and the other end of the pneumatic impeller 51 passes through the guide hole 221 and is transmission-connected to the lifting assembly 4; when air flows through the guide hole 221, the airflow drives the pneumatic impeller 51 to rotate, and the pneumatic impeller 51 drives the lifting assembly 4 to drive the vacuum suction cup 3 close to the workpiece surface.

[0039] Specifically, this embodiment installs the vacuum suction cup 3 on the lifting component 4, installs the pneumatic component 5 in the guide hole 221, and installs the lifting component 4 on the guide shell 2, and then the pneumatic impeller 51 of the pneumatic component 5 is connected to the lifting component 4 by transmission; when working, the vacuum pump is started to drive the air in the guide hole 221 to flow, thereby using the air to drive the pneumatic impeller 51 to rotate, and then using the pneumatic impeller 51 to drive the lifting component 4 to move, so that the vacuum suction cup 3 installed on the lifting component 4 descends; when applied to the grasping of the curved workpiece 8, when the vacuum suction cup 3 does not contact the surface of the workpiece, the suction cup body 32 of the vacuum suction cup 3 cannot be adsorbed to the surface of the workpiece At this time, the guide hole 221 is not blocked and the passage is always maintained. The external air flow will continuously enter from the vacuum suction cup 3 and pass through the guide hole 221 under the extraction of the vacuum pump, so that the pneumatic impeller 51 keeps rotating, and the rotation of the pneumatic impeller 51 will continue to drive the vacuum suction cup 3 to move and approach the curved workpiece 8 located below it until the vacuum suction cup 3 contacts the workpiece surface. After the air between the vacuum suction cup 3 and the workpiece surface is extracted by the vacuum pump, a vacuum is formed, so that the vacuum suction cup 3 tightly adsorbs the workpiece surface under the action of atmospheric pressure. After the vacuum suction cup 3 tightly adsorbs the workpiece surface, there is no air flow through the guide hole 221, and the pneumatic impeller 51 stops rotating. When the feeding mechanism of the present invention is applied to a workpiece with a large curvature, after the vacuum suction cup 3 closest to the highest point of the curved surface adsorbs the workpiece, the other vacuum suction cups 3 drive the pneumatic impeller 51 to rotate through the airflow, thereby driving the vacuum suction cups 3 to approach the surface of the workpiece located below it, so as to shorten the distance between the vacuum suction cups 3 and the surface of the curved workpiece 8, so that the multiple vacuum suction cups 3 with the top ends at the same height can form a powerful grip on multiple points on the surface of the curved workpiece 8 (such as Figure 4 shown).

[0040] Specifically, the guide shell 2 of this embodiment is composed of a shell cover 21 and two guide blocks 22; the two guide blocks 22 are connected together by bolts or other fasteners; the shell cover 21 is installed on the top surface of the two guide blocks 22 by bolts or other fasteners; the guide hole 221 is formed by the arc grooves on the two guide blocks 22 abutting each other, and at the same time, the shell cover 21 forms a through hole aligned with the guide hole 221 at the corresponding position.

[0041] In this embodiment, in order to ensure the airtightness of the guide housing 2 , the gap between the contact surfaces of the two guide blocks 22 and the gap between the contact surfaces of the guide block 22 and the housing cover 21 should be sealed with sealant.

[0042] In this embodiment, air pipe connectors 6 are provided at both ends of the air guide hole 221, which can be quickly connected to the air flow pipeline. The air pipe connector 6 is connected to the vacuum pump and the air pipe connector 6 is connected to the vacuum suction cup 3 through sufficiently long soft rubber air pipes.

[0043] In this embodiment, two parallel connecting plates 11 are installed at the terminal end of the robot arm 1 , and the two ends of the connecting plates 11 are installed with the guide housing 2 ; the lifting assembly 4 is installed below the guide housing 2 .

[0044] Optionally, a first mounting cavity 225 is further provided in the guide housing 2; the first mounting cavity 225 is arranged on one side of the guide hole 221, and the first mounting cavity 225 is connected to the guide hole 221 through the connecting hole 222b, and the pneumatic component 5 also includes a first bevel gear 52 and a second bevel gear 53 that are meshed with each other, and the pneumatic impeller 51 has a rotating shaft and blades, and the blades of the pneumatic impeller 51 are located in the guide hole 221; the first bevel gear 52 and the second bevel gear 53 are located in the first mounting cavity 225, and the rotating shaft of the pneumatic impeller 51 passes through the connecting hole 222b and is transmission-connected to the first bevel gear 52, and the second bevel gear 53 is transmission-connected to the lifting component 4.

[0045] Optionally, the lifting assembly 4 includes a screw rod 45 and a screw nut 44. The lifting assembly 4 includes a screw rod 45 and a screw nut 44. The screw nut 44 is movably mounted on the screw rod 45, and the screw rod 45 is rotatably mounted on the diversion housing 2. Part of the screw rod 45 is located outside the diversion housing 2, and the part of the screw rod 45 located inside the diversion housing 2 passes through the first mounting cavity 225; the second bevel gear 53 is fixedly mounted on the screw rod 45; the screw nut 44 is movably mounted on the part of the screw rod 45 located outside the diversion housing 2, and the vacuum suction cup 3 is mounted on the screw nut 44.

[0046] Optionally, the lifting assembly 4 also includes a first limit seat 41, a second limit seat 42, a base plate 43 and a guide rail 47, the first limit seat 41 is installed on the bottom end surface of the diversion shell 2, the base plate 43 is installed on the side wall of the first limit seat 41, the second limit seat 42 is installed on the base plate 43, and the first limit seat 41 and the second limit seat 42 are located at the two ends of the same side of the base plate 43; the guide rail 47 is installed on the base plate 43 and is located between the first limit seat 41 and the second limit seat 42; one end of the screw rod 45 is rotatably installed on the diversion shell 2, and the other end passes through the first limit seat 41 and is rotatably installed on the second limit seat 42; the screw rod nut 44 is slidably installed on the guide rail 47.

[0047] Specifically, the guide rail 47 is arranged between the first limit seat 41 and the second limit seat 42, one side of the screw nut 44 is installed on the guide rail 47, and the other side is provided with a mounting seat 46; the vacuum suction cup 3 includes an air inlet pipe 31 and a suction cup body 32, one end of the air inlet pipe 31 is connected to the suction cup body 32, and the other end is installed on the mounting seat 46, and the end of the air inlet pipe 31 installed on the mounting seat 46 is connected to the air pipe joint 6 on the guide shell 2 through a sufficiently long air pipe. The air pipe should ensure that when the vacuum suction cup 3 is at the lowest point, the air pipe joint 6 and the air inlet pipe 31 are still connected together.

[0048] Specifically, the axis of the pneumatic impeller 51 is perpendicular to the axis of the guide hole 221, and the axis of the screw 45 is parallel to the axis of the guide hole 221. When air flows through the guide hole 221, the pneumatic impeller 51 drives the first bevel gear 52 to rotate in a vertical plane. By configuring the second bevel gear 53 and the first bevel gear 52 as bevel gears with 45-degree teeth, the first bevel gear 52 can drive the second bevel gear 53 to rotate in a horizontal plane.

[0049] Specifically, the first mounting cavity 225 is formed by two grooves formed on the guide block 22. The pneumatic impeller 51 is a vortex impeller. One end of the vortex impeller is rotatably mounted on the side wall of the guide hole 221, and the other end passes through the side wall of the guide hole 221 and is connected to the first bevel gear 52 located in the first mounting cavity 225.

[0050] Optionally, in order to reduce the friction force on the pneumatic impeller 51 , bearings are installed between both ends of the vortex impeller and the side walls of the guide hole 221 .

[0051] Optionally, the width of the vortex impeller blades is greater than the diameter of the guide hole 221, so that the contact area between the airflow entering from the guide hole 221 and the blades of the pneumatic impeller 51 is larger, thereby ensuring that the pneumatic impeller 51 and the airflow have sufficient contact surface to ensure that the airflow pushes the pneumatic impeller 51.

[0052] In this embodiment, the suction cup body 32 is made of a deformable soft material, such as rubber; the soft material allows the suction cup body 32 to be deformed under the action of the pressure difference, so that the bottom end surface of the suction cup body 32 is in close contact with the top end surface of the curved workpiece 8, thereby completing the grasping of the curved workpiece 8 at that point.

[0053] During use, after the airflow drives the pneumatic impeller 51 to rotate, the pneumatic impeller 51 drives the second bevel gear 53 to rotate in the horizontal plane through the first bevel gear 52, thereby driving the screw 45 to rotate. One side of the screw nut 44 is installed on the guide rail 47. The screw 45 and the screw nut 44 form a screw pair, so that when the screw 45 rotates, the screw nut 44 moves straightly along the guide rail 47.

[0054] In this embodiment, in order to ensure that the screw rod 45 can rotate flexibly, a rolling bearing 451 is installed at one end of the screw rod 45 connected to the second limiting seat 42 .

[0055] Optionally, a bearing mounting hole 223 is provided at the top of the shell cover 21, and the top of the screw rod 45 can be rotatably mounted in the bearing mounting hole 223. A rolling bearing 451 is also provided in the bearing mounting hole 223. The rolling bearings 451 at both ends of the screw rod 45 jointly support the screw rod 45, so that the resistance to the rotation of the screw rod 45 is smaller.

[0056] Optionally, a second mounting cavity 222 is further provided in the guide housing 2, the second mounting cavity 222 is coaxially arranged with the guide hole 221, and the guide hole 221 passes through the second mounting cavity 222, and the two ends of the pneumatic impeller 51 can be rotatably mounted on the two opposite side walls of the second mounting cavity 222; the second mounting cavity 222 is provided on one side of the first mounting cavity 225, and one end of the pneumatic impeller 51 passes through the second mounting cavity 222 and is connected to the first bevel gear 52 located in the first mounting cavity 225.

[0057] Specifically, limiting grooves 222a and connecting holes 222b are provided on both sides of the second mounting cavity 222. The second mounting cavity 222 and the limiting grooves 222a and connecting holes 222b provided therein are all formed by combining grooves respectively provided on the two guide blocks 22. The pneumatic impeller 51 includes blades and a rotating shaft. The limiting grooves 222a on the sidewalls of the second mounting cavity 222 are used to support one end of the rotating shaft of the pneumatic impeller 51, while the connecting holes 222b on the sidewalls of the second mounting cavity 222 are used to allow the other end of the rotating shaft of the pneumatic impeller 51 to pass through and thereby be fixedly connected to the first bevel gear 52 in the first mounting cavity 225. Bearings, preferably ball bearings, are installed in the limiting grooves 222a and through-holes on the sidewalls of the second mounting cavity 222.

[0058] Optionally, the diameter of the guide hole 221 at one end close to the vacuum suction cup 3 is smaller than the diameter of the guide hole 221 at one end away from the vacuum suction cup 3 .

[0059] Specifically, the aperture of the guide hole 221 near one end of the vacuum suction cup 3 is reduced. When the suction force of the vacuum pump remains unchanged, the air flow rate at the end of the vacuum suction cup 3 can be increased, so that the impact force of the airflow on the pneumatic impeller 51 is greater, and the pneumatic impeller 51 can be driven to rotate more effectively.

[0060] In this embodiment, the vacuum pump is not shown. The vacuum pump can be installed on the robotic arm 1 or at a workstation near the robotic arm 1. At the same time, the multiple vacuum suction cups 3 connected to the flow guide housing 2 in this embodiment are connected to the vacuum pump through a solenoid valve. When some of the vacuum suction cups 3 have come into contact with the surface of the curved workpiece 8, the suction force of the remaining vacuum suction cups 3 increases while the vacuum pump power remains unchanged, so that the flow rate of gas entering the flow guide hole 221 is faster, and the vacuum suction cups 3 can be driven closer to the surface of the workpiece more efficiently.

[0061] In this embodiment, if Figures 1 to 13 As shown, a ratchet 452 is installed on the screw rod 45 , a first installation slot 224 is opened in the guide housing 2 , and the ratchet 452 is located in the first installation slot 224 ; a pawl 73 is movably installed in the first installation slot 224 , and one end of the pawl 73 abuts against the ratchet 452 .

[0062] Specifically, the first mounting groove 224 is provided on the top surface of the guide block 22 and is formed by combining two half grooves on the top surfaces of the guide blocks 22 .

[0063] Optionally, the first mounting slot 224 communicates with the guide hole 221 via a connecting slot 226. An elastic diaphragm 7 is disposed within the connecting slot 226, dividing the connecting slot 226 into two independent spaces. The elastic diaphragm 7 is connected to the end of the pawl 73 away from the ratchet 452. The elastic diaphragm 7 is connected to one end of a first connecting rod 71, the other end of which is hingedly connected to a second connecting rod 72. The other end of the second connecting rod 72 is hingedly connected to the pawl 73. The middle portion of the second connecting rod 72 is rotatably mounted within the first mounting slot 224.

[0064] Specifically, during use, after the air flow passes through the guide hole 221 or the guide hole 221 forms a negative pressure space, the air flow rate on the side of the connecting groove 226 close to the guide hole 221 increases, so that the pressure on this side decreases, so that the elastic diaphragm 7 is driven by the pressure difference to deform toward the side of the connecting groove 226 close to the guide hole 221, and drives the first connecting rod 71 to move, and then pushes the pawl 73 to move in the opposite direction, so that the pawl 73 is close to the ratchet 452, preventing the ratchet 452 from rotating in the opposite direction.

[0065] Optionally, two limiting protrusions 74 are further provided in the first installation groove 224 , and a gap for the movement of the pawl 73 is formed between the two limiting protrusions 74 .

[0066] Specifically, the two limiting protrusions 74 are respectively provided on the two guide blocks 22, and the first connecting rod 71, the second connecting rod 72 and the connecting groove 226 are provided on the same guide block 22. The two limiting protrusions 74 are respectively located on both sides of the pawl 73.

[0067] Optionally, a second mounting slot 227 is provided in the guide housing 2 , and a coil spring 453 is also installed on the screw rod 45 ; one end of the coil spring 453 is fixedly installed in the second mounting slot 227 , and the other end is connected to the screw rod 45 ; the second bevel gear 53 is located above the second mounting slot 227 .

[0068] Specifically, the second mounting groove 227 is formed by combining arcuate grooves formed on the two guide blocks 22. The inner ring end of the coil spring 453 is welded or clamped to the screw rod 45, and the outer ring end of the coil spring 453 is welded or clamped to the inner wall of the second mounting groove 227.

[0069] In this embodiment, when the pneumatic assembly 5 drives the vacuum suction cup 3 to descend, the screw rod 45 rotates clockwise, and the screw rod 45 coils the coil spring 453 while rotating, so that the coil spring 453 stores energy. At this time, the air in the guide hole 221 is in a high-speed flow state, the pawl 73 contacts the ratchet 452, and the ratchet 452 can only rotate clockwise; when the vacuum suction cup 3 contacts and adsorbs on the surface of the workpiece, there is no more airflow through the guide hole 221. At this time, although the pneumatic impeller 51 no longer rotates and no longer provides the force to drive the screw rod 45 to rotate, the guide hole 221 is in a negative pressure state, and the elastic diaphragm 7 is still deformed by the negative pressure, so that the first connecting rod 71 is still in a position close to the guide hole 221, and the pawl 73 is still in contact with the ratchet 452, so that the ratchet The wheel 452 still cannot rotate counterclockwise. At this time, the coil spring 453 is still in a curled state; when the robotic arm 1 transfers the workpiece to the next process, the solenoid valve connected to the guide hole 221 and the vacuum pump is opened, so that the guide hole 221 is connected to the outside world, and the vacuum suction cup 3 no longer adsorbs the workpiece. Then the pressure on both sides of the elastic diaphragm 7 is restored to the same level. Under the action of its own elasticity, the elastic diaphragm 7 returns to its initial position and no longer deforms toward the end close to the guide hole 221, thereby pushing the first connecting rod 71 to move toward the end of the first mounting groove 224, so that the pawl 73 disengages from the ratchet 452. At this time, the screw rod 45 is no longer restricted, and the coil spring 453 releases its elasticity, driving the screw rod 45 to rotate in the opposite direction, thereby driving the screw nut 44 to drive the vacuum suction cup 3 back to its initial position.

[0070] In this embodiment, during installation, the pneumatic impeller 51 and the screw rod 45 are first installed on the first guide block 22, so that the first bevel gear 52 on the pneumatic impeller 51 and the first bevel gear, the coil spring 453 and the ratchet 452 on the screw rod 45 are respectively installed at corresponding positions on the guide housing 2, and then the other guide block 22 is locked on the first guide block 22; then the first connecting rod 71, the second connecting rod 72 and the pawl 73 are installed in the first installation groove 224, and the elastic diaphragm 7 is installed in the connecting groove 226, and then the shell cover 21 is locked on the two guide blocks 22; finally, the first limit seat 41, the bottom plate 43 and the second limit seat 42 are installed at corresponding positions outside the guide housing 2.

[0071] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A feeding mechanism for automobile parts processing, characterized in that: include: A flow guide housing (2), the flow guide housing (2) being mounted on the robotic arm (1), a flow guide hole (221) being provided in the flow guide housing (2), the flow guide hole (221) being used for communicating with a vacuum pump; A lifting assembly (4), the lifting assembly (4) being mounted on the flow guide housing (2), a vacuum suction cup (3) being movably mounted on the lifting assembly (4), the vacuum suction cup (3) being connected to the vacuum pump via the flow guide hole (221); A pneumatic assembly (5), the pneumatic assembly (5) comprising a pneumatic impeller (51), a portion of the pneumatic impeller (51) being rotatably disposed in a guide hole (221), and another portion of the pneumatic impeller (51) penetrating a side wall of the guide hole (221) and being transmission-connected to a lifting assembly (4); when air flows through the guide hole (221), the airflow drives the pneumatic impeller (51) located in the guide hole (221) to rotate, and the pneumatic impeller (51) drives the vacuum suction cup (3) on the lifting assembly (4) to move; The lifting assembly (4) comprises a screw rod (45) and a screw rod nut (44), wherein the screw rod nut (44) is movably mounted on the screw rod (45), and the screw rod (45) is rotatably mounted on the diversion housing (2), and a portion of the screw rod (45) is located outside the diversion housing (2); a ratchet (452) is mounted on the screw rod (45), a first mounting groove (224) is provided in the diversion housing (2), and the ratchet (452) is located in the first mounting groove (224); The pneumatic assembly (5) further comprises a first bevel gear (52) and a second bevel gear (53) meshing with each other; a pawl (73) is movably mounted in the first mounting groove (224), one end of the pawl (73) abutting against the ratchet (452); the first mounting groove (224) is connected to the guide hole (221) via the connecting groove (226); an elastic diaphragm (7) is arranged in the connecting groove (226), and the elastic diaphragm (7) divides the connecting groove (226) into two independent spaces; the elastic diaphragm (7) is transmission-connected to one end of the pawl (73) away from the ratchet (452); A first mounting cavity (225) is provided in the guide housing (2), the first bevel gear (52) and the second bevel gear (53) are located in the first mounting cavity (225), and the second bevel gear (53) is fixedly mounted on the screw rod (45); A second mounting groove (227) is provided in the guide housing (2), and a coil spring (453) is also installed on the screw rod (45); One end of the coil spring (453) is fixedly mounted in the second mounting groove (227), and the other end is connected to the screw rod (45).

2. A feeding mechanism for automobile parts processing according to claim 1, characterized in that: The first installation cavity (225) is arranged on one side of the guide hole (221), and the first installation cavity (225) is connected to the guide hole (221) via a connecting hole (222b); The pneumatic impeller (51) has a rotating shaft and blades, and the blades of the pneumatic impeller (51) are located in the guide hole (221); The rotating shaft of the pneumatic impeller (51) passes through the connecting hole (222b) and is transmission-connected to the first bevel gear (52), and the second bevel gear (53) is transmission-connected to the lifting assembly (4).

3. A feeding mechanism for automobile parts processing according to claim 2, characterized in that: The portion of the screw rod (45) located inside the flow guide housing (2) passes through the first installation cavity (225); The screw nut (44) is movably mounted on the portion of the screw (45) located outside the flow guide housing (2), and the vacuum suction cup (3) is mounted on the screw nut (44).

4. A feeding mechanism for automobile parts processing according to claim 3, characterized in that: The lifting assembly (4) further includes a first limiting seat (41), a second limiting seat (42), a bottom plate (43) and a guide rail (47), wherein the first limiting seat (41) is mounted on the bottom end surface of the guide housing (2), the bottom plate (43) is mounted on the side wall of the first limiting seat (41), the second limiting seat (42) is mounted on the bottom plate (43), and the first limiting seat (41) and the second limiting seat (42) are located at two ends of the same side of the bottom plate (43); The guide rail (47) is mounted on the base plate (43) and is located between the first limiting seat (41) and the second limiting seat (42); One end of the screw rod (45) is rotatably mounted on the flow guide housing (2), and the other end passes through the first limiting seat (41) and is rotatably mounted on the second limiting seat (42); The screw nut (44) is slidably mounted on the guide rail (47).

5. The feeding mechanism for automobile parts processing according to claim 2, characterized in that: A second installation cavity (222) is further provided in the flow guide housing (2), the second installation cavity (222) and the flow guide hole (221) are coaxially arranged, and the flow guide hole (221) passes through the second installation cavity (222); Limiting grooves (222a) and connecting holes (222b) are respectively provided on both sides of the second mounting cavity (222); the blades of the pneumatic impeller (51) are mounted on the rotating shaft and located in the second mounting cavity (222); and one end of the pneumatic impeller (51) away from the first bevel gear (52) is rotatably mounted in the limiting groove (222a).

6. A feeding mechanism for automobile parts processing according to claim 5, characterized in that: The diameter of the guide hole (221) at one end close to the vacuum suction cup (3) is smaller than the diameter of the end away from the vacuum suction cup (3); The pneumatic impeller (51) is a vortex impeller, and the width of the vortex impeller blades is greater than the diameter of the guide hole (221).

7. The feeding mechanism for automobile parts processing according to claim 3, characterized in that: The elastic diaphragm (7) is connected to one end of a first connecting rod (71), and the other end of the first connecting rod (71) is hingedly connected to a second connecting rod (72); The other end of the second connecting rod (72) is hingedly connected to the pawl (73); The middle portion of the second connecting rod (72) is rotatably mounted in the first mounting groove (224); Two limiting protrusions (74) are further provided in the first installation groove (224), and a gap for the movement of the pawl (73) is formed between the two limiting protrusions (74).

8. A feeding mechanism for automobile parts processing according to claim 7, characterized in that: The second bevel gear (53) is located above the second mounting groove (227).

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