A servo automatic feeding device with precise rotation function

Abstract

The present invention discloses a servo automatic feeding device with precise rotation function, which relates to the field of screw transmission technology, including a mounting frame, a material picking platform, a conveying unit, a material picking unit and a feeding unit, wherein the mounting frame is used to install and fix the conveying unit, the feeding unit and the material picking unit, the material picking platform is used to hold the screws, the conveying unit is used to convey the screws, the material picking unit is used to clamp the screws, and the feeding unit is used to feed the screws by rotation, so as to ensure precise feeding into the material receiving area and clean the material picking unit at the same time, so as to avoid impurities attached to the surface of the screws affecting the clamping accuracy of the material picking unit next time, and after the material picking unit clamps the screws on the material picking platform, the material picking unit is transported to the discharge area through the conveying unit, and the screws are accurately placed in the discharge area by the feeding unit and the material picking unit is cleaned at the same time, so as to avoid the accumulation of impurities on the surface of the long-term clamped screws, affecting the accuracy of material picking, and avoiding the occurrence of material leakage and falling.

Description

Technical Field

[0001] The invention relates to the technical field of screw transmission, in particular to a servo automatic feeding device with a precise rotation function. Background Art

[0002] In modern manufacturing, screws are a basic and widely used connector, and their assembly efficiency and quality play a key role in product production. Automatic material collection, rotary feeding and related precision operation technologies have become an important part of improving screw assembly efficiency and quality. However, existing screw feeding devices have significant deficiencies in many aspects.

[0003] Existing rotary feeding devices are difficult to meet the requirements of high-precision assembly in terms of rotation accuracy. Most devices use simple motor direct drive or ordinary gear transmission, which is prone to vibration and deviation during rotation, causing the screws to have angular deviation during the feeding process. This will cause great assembly difficulties for some screws that need to be installed at precise angles, such as precision screws in electronic equipment. Moreover, these devices have poor speed adjustment flexibility and cannot be quickly and accurately adjusted according to different production processes and screw specifications, which limits the further improvement of production efficiency.

[0004] During the process of picking up and feeding the screws, the cleaning of the clamping part is extremely important. At present, most feeding devices lack an effective cleaning mechanism for the clamping part. Over time, a large amount of dust, debris, oil stains on the surface of the screws and other impurities will accumulate in the clamping part. These impurities will not only affect the stability of the clamping and cause the screws to slip during the feeding process, but also accelerate the wear of the clamping parts and shorten the service life of the equipment. For example, in some metal processing workshops, metal dust in the environment is very easy to adhere to the clamping part. Conventional manual cleaning methods are not only time-consuming and labor-intensive, but also cannot guarantee the timeliness and thoroughness of cleaning.

[0005] When retrieving materials, the alignment accuracy between the screw and the retrieving chuck directly affects the installation time and installation accuracy. Existing feeding devices have major defects in this regard, often relying on rough manual adjustment or simple mechanical positioning, and cannot achieve automatic and accurate alignment. There is a certain randomness in the position and posture of the screw on the feeding track. When the retrieving chuck is retrieving materials, it is often impossible to accurately align the center of the screw head, resulting in failure to retrieve materials or requiring multiple adjustments to successfully retrieve materials. This not only wastes a lot of time, but also reduces the overall assembly accuracy, making it difficult to meet the needs of modern manufacturing for efficient and high-precision production. Summary of the invention

[0006] The object of the present invention is to provide a servo automatic feeding device with precise rotation function to solve the problems raised in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The servo automatic feeding device with precise rotation function comprises a mounting frame, a material picking platform, a conveying unit, a material picking unit and a feeding unit. The mounting frame is placed on a horizontal basis, the material picking platform is placed on a horizontal basis, the material picking platform is placed below the mounting frame, the conveying unit is fixedly connected to the mounting frame, the material picking unit is fixedly connected to the conveying unit, the material picking unit has the function of increasing the feeding rate, the feeding unit is fixedly connected to the material picking unit, and the feeding unit has a cleaning effect on the material picking unit.

[0009] The mounting frame is used to install and fix the conveying unit, the feeding unit and the picking unit. The picking table is used to hold the screws, the conveying unit is used to convey the screws, the picking unit is used to clamp the screws, and the feeding unit is used to feed the screws by rotation, so as to ensure accurate feeding into the receiving area and clean the picking unit at the same time, so as to avoid impurities attached to the surface of the screw affecting the next clamping accuracy of the picking unit. After the picking unit clamps the screw on the picking table, the picking unit is transported to the discharge area through the conveying unit. The screws are accurately delivered to the discharge area through the feeding unit and the picking unit is cleaned at the same time, so as to avoid the accumulation of impurities on the surface of the long-term clamped screws, affecting the accuracy of picking, and avoiding leakage and falling of materials.

[0010] Furthermore, the material picking platform includes a horizontal material picking motor, a longitudinal material picking motor, a placing platform and an adjusting platform. The fixed end of the horizontal material picking motor is fixedly installed on the placing platform, the output end of the horizontal material picking motor is fixedly connected to the adjusting platform, the fixed end of the longitudinal material picking motor is fixedly installed on a horizontal basis, the output end of the longitudinal material picking motor is fixedly connected to the placing platform, and the placing platform is slidably connected to the adjusting platform.

[0011] After the staff places the screws on the material picking table, the controller controls the horizontal material picking motor and the vertical material picking motor to start, and changes the position of the placement table and the adjustment table, so as to adjust the horizontal and vertical positions of the screws to the optimal material picking position.

[0012] Furthermore, the conveying unit includes a transverse conveying motor, a slide rail, a transverse plate, a longitudinal conveying motor and a longitudinal plate. The fixed end of the transverse conveying motor is fixedly installed on the mounting frame, the slide rail is fixedly installed on the surface of the mounting frame at one end away from the horizontal foundation, the transverse plate is slidably installed on the slide rail, the transverse plate is fixedly connected to the output end of the transverse conveying motor, the fixed end of the longitudinal conveying motor is fixedly installed on the transverse plate, the output end of the longitudinal conveying motor is fixedly connected to the longitudinal plate, and the longitudinal plate is fixedly connected to the material picking unit.

[0013] At this time, the controller controls the horizontal conveying motor to start, driving the horizontal moving plate to move to the right on the slide rail to just above the adjustment table. The controller controls the vertical conveying motor to start and drive the vertical moving plate to move downward, thereby driving the material picking unit to clamp the screws on the adjustment table downward.

[0014] Furthermore, the material picking unit includes a connecting plate, a driving motor, a clamping plate, a positioning arc plate, a telescopic rotating motor, a clamping block, a reset spring and a push plate. The connecting plate is fixedly connected to the longitudinal movement plate, the fixed end of the driving motor is fixedly connected to the connecting plate through a connecting rod, the output end of the driving motor is fixedly connected to the clamping plate, the positioning arc plate is fixedly installed on the end of the output end of the driving motor, the fixed end of the telescopic rotating motor is fixedly installed on the connecting plate, the output end of the telescopic rotating motor is fixedly connected to the push plate, and the clamping block is connected to the positioning arc plate through a reset spring.

[0015] Furthermore, the material picking unit also includes a material picking clamp, an electromagnet, an elastic rope, a gear rod, a cross bar, a torsion spring, a swing plate and a spring telescopic tube. The material picking clamp is fixedly mounted on the output end of the telescopic rotating motor. The material picking clamp is composed of a cylindrical portion and an extension portion. The extension portion of the material picking clamp is provided with a rectangular through groove. The electromagnet is fixedly mounted in the rectangular through groove of the extension portion of the material picking clamp. The electromagnet is connected to the gear rod through an elastic rope. The gear rod is slidably mounted in the rectangular through groove of the extension portion of the material picking clamp. A thin film pressure sensor is attached to the surface of the gear rod. Both ends of the cross bar are fixedly connected to the movable end of the spring telescopic tube. The cross bar is connected to the swing plate through a torsion spring. The positioning arc plate is provided with a semicircular through groove. The fixed end of the spring telescopic tube is fixedly mounted on the semicircular through groove of the positioning arc plate. The cross bar is fixedly connected to the feeding unit.

[0016] The controller controls the drive motor to start, thereby pushing the clamping plates closer to each other. In the process, the positioning arc plates are driven closer to each other, so that the clamping block clamps and fixes the screws to complete the screw picking action. At this time, the telescopic rotating motor is started, thereby driving the push plate to rotate downward until the picking clamp head drops to a specified distance. When the push plate contacts the swing plate during the downward rotation, the swing plate is pushed to move to both sides while compressing the torsion spring. During the downward swing of the swing plate, until the conductive plate contacts the inner wall of the positioning arc plate, the movable rod is squeezed and moves toward the center. When the conductive plate contacts the conductive ring in the guide limit tube, the current of the controller is transmitted to the electromagnet through the conductive plate and the conductive ring, so that the electric The magnet is electrified to produce the same polarity as the stop rod. Under the effect of like repels like, the electromagnet pushes the stop rod downward. At this time, the stop rod rotates under the action of the telescopic rotary motor. When the stop rod penetrates into the countersunk slot of the screw, the pressure sensor on the surface of the stop rod detects the pressure and feeds back a signal to the controller, thereby controlling the telescopic rotary motor to stop rotating. At this time, the stop rod penetrates into the countersunk slot of the screw, completing the automatic and precise alignment of the screw, realizing automatic grasping of the screw, preparing for the screw feeding action in advance, saving a lot of time, avoiding the situation where the screw cannot be accurately aligned during feeding, reducing the chance of incorrect feeding, and improving work efficiency.

[0017] Furthermore, the feeding unit includes a movable rod, a guide limit tube, a conductive plate, a support rod, a pull rope and a cleaning brush. The movable rod is slidably mounted on one end of the pendulum plate close to the telescopic rotating motor, and a blocking block is provided at the end of the movable rod away from the horizontal base. The end of the movable rod close to the horizontal base passes through the guide limit tube and is fixedly connected to the conductive plate, and the conductive plate is electrically connected to the electromagnet. The guide limit tube is fixedly mounted on an end surface of the pendulum plate close to the horizontal base, and a conductive ring is provided at one end of the guide limit tube close to the horizontal base. The movable rod is slidably connected to the guide limit tube, and the support rod is fixedly mounted in the positioning arc plate. One end of the pull rope is fixedly connected to the cross bar, and the other end of the pull rope is fixedly connected to the clamping block by bypassing the support rod, and the cleaning brush is fixedly mounted on the output end of the telescopic rotating motor.

[0018] When the material picking process is completed, the controller controls the horizontal conveying motor and the longitudinal conveying motor to convey the screw to just above the material picking place, and the controller controls the telescopic rotating motor to continue to start, so that the swing rod squeezes the movable rod to extend to the limit length. At this time, the swing plate continues to rotate downward under the action of the telescopic rotating motor, and the swing plate squeezes and pushes the extended movable rod to move downward. On the one hand, the swing plate pulls the cross bar downward to squeeze the spring telescopic rod, and on the other hand, the pull rope is pulled during the downward movement of the cross bar. The pull rope pulls the clamping block around the support rod to compress the reset spring, slowly reducing the clamping force of the clamping block on the screw, avoiding the situation that the screw falls off due to lack of clamping force during the feeding process, and cooperates with the telescopic rotating motor to drive the material picking clamp to push the screw downward and rotate at the same time to complete the installation of the screw. When the telescopic rotating motor rotates downward, it drives the cleaning brush to clean the inner wall of the clamping block to avoid impurities and dust adhering to the inner wall of the clamping block caused by long-term clamping of the screw, affecting the clamping accuracy, while avoiding wear of the clamping block, thereby increasing the service life of the device.

[0019] Furthermore, in the vertical direction, the longitudinal extension length of the spring extension tube is greater than the longitudinal length of the clamping block.

[0020] In order to enable the telescopic rotating motor to drive the cleaning brush to go beyond the upper and lower boundaries of the clamping block for cleaning during the feeding process, it can penetrate into the bottom and various parts of the sides of the clamping block to ensure that easily overlooked corners and gaps can be covered by the brush to avoid residual impurities due to inadequate cleaning.

[0021] For areas of the clamping block that are easily contaminated with debris and oil during the process of removing and placing screws, such as the inside of the clamping mouth and the joint at the bottom, the longer telescopic length allows the brush to flexibly penetrate into these areas to achieve all-round cleaning, effectively preventing the accumulation of impurities from affecting the clamping effect.

[0022] Furthermore, the gear lever is made of magnet.

[0023] In order to make the conductive plate come into contact with the conductive ring on the guide limit tube, the electromagnet is controlled to generate polarity to push the gear lever out, thereby coming into contact with the countersunk slot of the screw, thereby achieving automatic and precise alignment during the material picking process, saving the time for realignment in the feeding step, and avoiding the occurrence of low accuracy caused by rough manual adjustment or simple mechanical positioning, thereby improving work efficiency.

[0024] Furthermore, the elastic coefficient of the spring expansion tube is greater than that of the torsion spring.

[0025] During the feeding process, in order to make the push plate move downward, the swing plate is first flipped by squeezing the swing plate, so that the movable rod moves out to the right. When the push plate continues to move downward, it squeezes and pushes the extended movable rod, driving the cross bar compression spring to move downward from the beginning while pulling the pull rope, so that the clamping block slowly moves away, pushing the screw to rotate downward while reducing the clamping force on the screw, avoiding the screw from falling off due to lack of clamping force during feeding, or excessive clamping force causing interference in screw feeding, resulting in the inability to jam the material, further improving the feeding accuracy and realizing automatic rotation feeding.

[0026] Furthermore, the number of the extension parts of the material picking clamp ranges from 1 to 9, and the shape of the extension parts is rectangular, triangular or trapezoidal.

[0027] In order to adapt to countersunk slots of various specifications, extensions of different shapes can provide support and friction from multiple directions when matched with the countersunk slots to keep the screws stable on the material picking clamp, further improve the stability of material picking and avoid material falling.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention enables the clamping block to clamp and fix the screw by positioning the arc plates close to each other, thereby completing the screw picking action, and the telescopic rotating motor drives the push plate to rotate downward. When the push plate contacts the swing plate during the downward rotation until the conductive plate contacts the inner wall of the positioning arc plate, the movable rod is squeezed and moves toward the center. When the conductive plate contacts the conductive ring in the guide limit tube, the current of the controller is transmitted to the electromagnet through the conductive plate and the conductive ring, so that the electromagnet pushes the stop rod to move downward. When the stop rod penetrates into the countersunk slot hole of the screw, the pressure sensor on the surface of the stop rod detects the pressure and feeds back a signal to the controller, and the telescopic rotating motor stops rotating. At this time, the stop rod penetrates into the countersunk slot hole of the screw, completing the automatic and precise alignment action of the screw, realizing automatic grasping of the screw, preparing in advance for the screw feeding action, saving a lot of time, avoiding the situation that the screw cannot be accurately aligned during the feeding process, reducing the probability of incorrect feeding, and improving work efficiency.

[0030] 2. The present invention, when the material picking process is completed, the telescopic rotating motor continues to start, so that the swing rod squeezes the movable rod to extend to the limit length. At this time, the swing plate continues to rotate downward under the action of the telescopic rotating motor, and the swing plate squeezes and pushes the extended movable rod to move downward. On the one hand, the swing plate pulls the cross bar downward to squeeze the spring telescopic rod, and on the other hand, the pull rope is pulled during the downward movement of the cross bar. The pull rope is pulled around the support rod to pull the clamping block to compress the reset spring, slowly reducing the clamping force of the clamping block on the screw, thereby avoiding the situation where the screw falls off due to lack of clamping force during the feeding process, and cooperating with the telescopic rotating motor to drive the material picking clamp head, pushing the screw to move downward and rotating at the same time, completing the installation of the screw. When the telescopic rotating motor rotates downward, it drives the cleaning brush to clean the inner wall of the clamping block, thereby avoiding the adhesion of impurities and dust on the inner wall of the clamping block caused by long-term clamping of the screw to affect the clamping accuracy, while avoiding the wear of the clamping block, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view structural schematic diagram of a servo automatic feeding device with precise rotation function of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall appearance structure of a servo automatic feeding device with precise rotation function of the present invention;

[0033] Figure 3 The present invention is a servo automatic feeding device with precise rotation function Figure 2 A schematic diagram of the structure of the partial enlarged view at center A;

[0034] Figure 4 It is a schematic diagram of the internal structure of a positioning arc plate of a servo automatic feeding device with a precise rotation function of the present invention;

[0035] Figure 5 The present invention is a servo automatic feeding device with precise rotation function Figure 4 The structural schematic diagram of the partial enlarged view at B in the middle;

[0036] Figure 6 The present invention is a servo automatic feeding device with precise rotation function Figure 5 The structural schematic diagram of the partial enlarged view at C in the middle;

[0037] Figure 7 The present invention is a servo automatic feeding device with precise rotation function Figure 5 The structural schematic diagram of the local enlarged view at D in the middle;

[0038] Figure 8 It is a schematic diagram of the installation position structure of part of the feeding unit and part of the taking unit of a servo automatic feeding device with precise rotation function of the present invention;

[0039] Fig. 9 It is a schematic diagram of the installation position structure of a cleaning brush of a servo automatic feeding device with a precise rotation function of the present invention;

[0040] Fig.10 The present invention is a servo automatic feeding device with precise rotation function Fig. 9 The structural schematic diagram of the local enlarged view at E in the middle;

[0041] Fig.11 The present invention is a servo automatic feeding device with precise rotation function Fig. 9 A schematic diagram of a top view structure of FIG.

[0042] Fig.12 The present invention is a schematic diagram of the internal structure of a material picking clamp of a servo automatic feeding device with a precise rotation function.

[0043] In the figure: 1. mounting frame; 2. material taking platform; 21. horizontal material taking motor; 22. longitudinal material taking motor; 23. placing platform; 24. adjusting platform; 3. conveying unit; 31. horizontal conveying motor; 32. slide rail; 33. transverse plate; 34. longitudinal conveying motor; 35. longitudinal plate; 4. material taking unit; 41. connecting plate; 42. driving motor; 43. clamping plate; 44. positioning arc plate; 45. telescopic rotating motor; 46. clamping block; 47. reset spring; 48. push plate; 49. material taking clamp; 410. electromagnet; 411. elastic rope; 412. gear lever; 413. cross bar; 414. torsion spring; 415. swing plate; 416. spring telescopic tube; 5. feeding unit; 51. movable rod; 52. guide limit tube; 53. conductive plate; 54. support rod; 55. pull rope; 56. cleaning brush. DETAILED DESCRIPTION

[0044] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0045] Example: Figure 1-Figure 12 As shown, the present invention provides a technical solution:

[0046] like Figure 1 , 5As shown, a servo automatic feeding device with precise rotation function includes a mounting frame 1, a material picking platform 2, a conveying unit 3, a material picking unit 4 and a feeding unit 5. The mounting frame 1 is placed on a horizontal basis, the material picking platform 2 is placed on a horizontal basis, the material picking platform 2 is placed below the mounting frame 1, the conveying unit 3 is fixedly connected to the mounting frame 1, the material picking unit 4 is fixedly connected to the conveying unit 3, the material picking unit 4 has a function of increasing the feeding rate, the feeding unit 5 is fixedly connected to the material picking unit 4, and the feeding unit 5 has a cleaning effect on the material picking unit 4.

[0047] The mounting frame 1 is used to install and fix the conveying unit 3, the feeding unit 5 and the picking unit 4. The picking table 2 is used to hold the screws, the conveying unit 3 is used to convey the screws, the picking unit 4 is used to clamp the screws, and the feeding unit 5 is used to feed the screws by rotation, so as to ensure the accurate feeding into the receiving area and clean the picking unit 4 at the same time, so as to avoid the impurities attached to the surface of the screw affecting the clamping accuracy of the picking unit 4 next time. After the picking unit 4 clamps the screw on the picking table 2, the picking unit 4 is transported to the discharge area through the conveying unit 3, and the screw is accurately delivered to the discharge area through the feeding unit 5 while cleaning the picking unit 4, so as to avoid the accumulation of impurities on the surface of the screws for a long time, affecting the accuracy of picking, and avoiding the occurrence of leakage and falling of materials.

[0048] like Figure 2 As shown, the material picking platform 2 includes a horizontal material picking motor 21, a longitudinal material picking motor 22, a placement platform 23 and an adjustment platform 24. The fixed end of the horizontal material picking motor 21 is fixedly installed on the placement platform 23, and the output end of the horizontal material picking motor 21 is fixedly connected to the adjustment platform 24. The fixed end of the longitudinal material picking motor 22 is fixedly installed on a horizontal basis, and the output end of the longitudinal material picking motor 22 is fixedly connected to the placement platform 23. The placement platform 23 is slidably connected to the adjustment platform 24.

[0049] After the worker places the screw on the material taking platform 2, the controller controls the horizontal material taking motor 21 and the vertical material taking motor 22 to start, and changes the position of the placing platform 23 and the adjusting platform 24, so as to adjust the horizontal and vertical positions of the screw to the optimal material taking position.

[0050] like Figure 2 As shown, the conveying unit 3 includes a transverse conveying motor 31, a slide rail 32, a transverse plate 33, a longitudinal conveying motor 34 and a longitudinal plate 35. The fixed end of the transverse conveying motor 31 is fixedly installed on the mounting frame 1, the slide rail 32 is fixedly installed on the surface of the mounting frame 1 at one end away from the horizontal foundation, the transverse plate 33 is slidably installed on the slide rail 32, the transverse plate 33 is fixedly connected to the output end of the transverse conveying motor 31, the fixed end of the longitudinal conveying motor 34 is fixedly installed on the transverse plate 33, the output end of the longitudinal conveying motor 34 is fixedly connected to the longitudinal plate 35, and the longitudinal plate 35 is fixedly connected to the material picking unit 4.

[0051] At this time, the controller controls the horizontal conveying motor 31 to start, driving the horizontal movement plate 33 to move rightward on the slide rail 32 to just above the adjustment table 24, and the controller controls the vertical conveying motor 34 to start and drive the vertical movement plate 35 to move downward, thereby driving the material picking unit 4 to clamp the screws on the adjustment table 24 downward.

[0052] like Figure 3 , 4 As shown in , 5, 6, and 11, the material picking unit 4 includes a connecting plate 41, a driving motor 42, a clamping plate 43, a positioning arc plate 44, a telescopic rotating motor 45, a clamping block 46, a reset spring 47 and a push plate 48. The connecting plate 41 is fixedly connected to the longitudinal moving plate 35. The fixed end of the driving motor 42 is fixedly connected to the connecting plate 41 through a connecting rod. The output end of the driving motor 42 is fixedly connected to the clamping plate 43. The positioning arc plate 44 is fixedly installed at the end of the output end of the driving motor 42. The fixed end of the telescopic rotating motor 45 is fixedly installed on the connecting plate 41. The output end of the telescopic rotating motor 45 is fixedly connected to the push plate 48. The clamping block 46 is connected to the positioning arc plate 44 through a reset spring 47.

[0053] like Figure 7 , 8 , 10, 11, and 12, the material picking unit 4 also includes a material picking clamp 49, an electromagnet 410, an elastic rope 411, a gear lever 412, a cross bar 413, a torsion spring 414, a swing plate 415, and a spring telescopic tube 416. The material picking clamp 49 is fixedly mounted on the output end of the telescopic rotating motor 45. The material picking clamp 49 is composed of a cylindrical portion and an extension portion. The extension portion of the material picking clamp 49 is provided with a rectangular through slot. The electromagnet 410 is fixedly mounted in the rectangular through slot of the extension portion of the material picking clamp 49. The electromagnet 410 It is connected to the gear rod 412 through an elastic rope 411, and the gear rod 412 is slidably installed in the rectangular through groove of the extension part of the material picking clamp 49. A thin film pressure sensor is attached to the surface of the gear rod 412. Both ends of the cross bar 413 are fixedly connected to the movable end of the spring telescopic tube 416. The cross bar 413 is connected to the swing plate 415 through a torsion spring 414. The positioning arc plate 44 is provided with a semicircular through groove. The fixed end of the spring telescopic tube 416 is fixedly installed on the semicircular through groove of the positioning arc plate 44. The cross bar 413 is fixedly connected to the feeding unit 5.

[0054] The controller controls the drive motor 42 to start, thereby pushing the clamping plates 43 closer to each other, and in the process, drives the positioning arc plates 44 closer to each other, so that the clamping block 46 clamps and fixes the screws to complete the screw picking action. At this time, the telescopic rotating motor 45 is started, thereby driving the push plate 48 to rotate downward until the picking clamp 49 drops to a specified distance. When the push plate 48 contacts the swing plate 415 during the downward rotation, the swing plate 415 is pushed to move to both sides while compressing the torsion spring 414. During the downward swinging of the swing plate 415, until the conductive plate 53 contacts the inner wall of the positioning arc plate 44, the movable rod 51 is squeezed and moves toward the center. When the conductive plate 53 contacts the conductive ring in the guide limit tube 52, the current of the controller passes through the conductive plate 53 and the conductive ring. The ring is transmitted to the electromagnet 410, so that the electromagnet 410 is energized to generate the same polarity as the blocking rod. Under the effect of like repels like, the electromagnet 410 pushes the blocking rod to move downward. At this time, the blocking rod rotates under the action of the telescopic rotating motor 45. When the blocking rod penetrates into the countersunk slot of the screw, the pressure sensor on the surface of the blocking rod detects the pressure and feeds back a signal to the controller, thereby controlling the telescopic rotating motor 45 to stop rotating. At this time, the blocking rod 412 penetrates into the countersunk slot of the screw, completing the automatic and precise alignment of the screw, realizing automatic grasping of the screw, preparing for the screw feeding action in advance, saving a lot of time, avoiding the situation where the screw cannot be accurately aligned during feeding, reducing the probability of incorrect feeding, and improving work efficiency.

[0055] like Figure 6 , 7 As shown in Figures 8, 9 and 10, the feeding unit 5 includes a movable rod 51, a guide limiting tube 52, a conductive plate 53, a support rod 54, a pull rope 55 and a cleaning brush 56. The movable rod 51 is slidably mounted on the end of the swing plate 415 close to the telescopic rotating motor 45, and a blocking block is provided at the end of the movable rod 51 away from the horizontal foundation. The end of the movable rod 51 close to the horizontal foundation passes through the guide limiting tube 52 and is fixedly connected with the conductive plate 53. The conductive plate 53 is electrically connected to the electromagnet 410. The guide limiting tube 52 is fixedly mounted on an end surface of the swing plate 415 close to the horizontal foundation, and a conductive ring is provided at the end of the guide limiting tube 52 close to the horizontal foundation. The movable rod 51 is slidably connected with the guide limiting tube 52, the support rod 54 is fixedly mounted in the positioning arc plate 44, one end of the pull rope 55 is fixedly connected to the cross bar 413, and the other end of the pull rope 55 passes around the support rod 54 and is fixedly connected to the clamping block 46, and the cleaning brush 56 is fixedly mounted on the output end of the telescopic rotating motor 45.

[0056] When the material picking process is completed, the controller controls the horizontal conveying motor 31 and the longitudinal conveying motor 34 to convey the screws to the top of the material picking place, and the controller controls the telescopic rotating motor 45 to continue to start, so that the swing rod squeezes the active rod 51 to extend to the limit length. At this time, the swing plate 415 continues to rotate downward under the action of the telescopic rotating motor 45, and the swing plate 415 squeezes and pushes the extended active rod 51 to move downward. On the one hand, the swing plate 415 pulls the cross bar 413 downward to squeeze the spring telescopic rod, and on the other hand, the pull rope 55 is pulled during the downward movement of the cross bar 413, and the pull rope 55 is pulled around the support rod 54. The dynamic clamping block 46 compresses the reset spring 47, slowly reducing the clamping force of the clamping block 46 on the screw to prevent the screw from falling off due to lack of clamping force during the feeding process, and cooperates with the telescopic rotating motor 45 to drive the material picking clamp 49 to push the screw to move downward while rotating to complete the installation of the screw. When the telescopic rotating motor 45 rotates downward, it drives the cleaning brush 56 to clean the inner wall of the clamping block 46 to prevent impurities and dust from adhering to the inner wall of the clamping block 46 due to long-term clamping of the screw, affecting the clamping accuracy, while avoiding wear of the clamping block 46 and increasing the service life of the device.

[0057] like Figure 5 , 8 As shown, in the vertical direction, the longitudinal extension length of the spring expansion tube 416 is greater than the longitudinal length of the clamping block 46 .

[0058] In order to enable the cleaning brush 56 to go beyond the upper and lower boundaries of the clamping block 46 for cleaning during the feeding process driven by the telescopic rotating motor 45, the brush can penetrate into the bottom and various parts of the side of the clamping block 46 to ensure that the corners and gaps that are easily overlooked can be covered by the brush to avoid residual impurities due to inadequate cleaning. For the parts of the clamping block 46 that are easily contaminated with debris and oil during the process of taking and placing screws, such as the inner side of the clamping mouth and the joint at the bottom, the longer telescopic length allows the brush to flexibly penetrate these areas to achieve all-round cleaning and effectively prevent the accumulation of impurities from affecting the clamping effect.

[0059] like Fig.12 As shown, the material of the gear lever 412 is a magnet.

[0060] In order to make the conductive plate 53 come into contact with the conductive ring on the guide limit tube 52, the electromagnet 410 is controlled to generate polarity to push the gear rod 412 out, thereby coming into contact with the countersunk slot of the screw, thereby achieving automatic and precise alignment during the material picking process, saving the time for realignment in the feeding step, and avoiding the occurrence of low accuracy due to rough manual adjustment or simple mechanical positioning, thereby improving work efficiency.

[0061] like Figure 8 As shown, the elastic coefficient of the spring expansion tube 416 is greater than that of the torsion spring 414 .

[0062] During the feeding process, in order to make the push plate 48 move downward, the swing plate 415 is first flipped by squeezing the swing plate 415, so that the movable rod 51 moves to the right and extends out. When the push plate 48 continues to move downward, it squeezes and pushes the extended movable rod 51, driving the cross bar 413 from the beginning to move downward while pulling the pull rope 55, so that the clamping block 46 slowly moves away, pushing the screw to rotate downward while reducing the clamping force on the screw, thereby preventing the screw from falling off due to lack of clamping force during feeding, or excessive clamping force causing interference in screw feeding, resulting in the inability to jam the material, further improving the accuracy of feeding and realizing automatic rotation feeding.

[0063] like Fig.10 As shown, the number of the extensions of the material picking clamp 49 ranges from 1 to 9, and the shape of the extensions is rectangular, triangular or trapezoidal.

[0064] In order to adapt to countersunk slots of various specifications, extensions of different shapes can provide support and friction from multiple directions when matched with the countersunk slots to keep the screw stable on the material picking clamp 49, further improve the stability of material picking and avoid material falling.

[0065] Working principle of the present invention:

[0066] After the staff places the screws on the feeding table 2, the controller controls the start of the transverse feeding motor 21 and the longitudinal feeding motor 22 to change the positions of the placing table 23 and the adjusting table 24, thereby adjusting the transverse and longitudinal positions of the screws to the optimal feeding position. At this time, the controller controls the start of the transverse conveying motor 31 to drive the transverse plate 33 to move rightward on the slide rail 32 to a position directly above the adjusting table 24. The controller controls the start of the longitudinal conveying motor 34 to drive the longitudinal plate 35 to move downward, thereby driving the feeding unit 4 to clamp the screws on the adjusting table 24 downward.

[0067] The controller controls the drive motor 42 to start, thereby pushing the clamping plates 43 closer to each other, and in the process, drives the positioning arc plates 44 closer to each other, so that the clamping block 46 clamps and fixes the screws to complete the screw picking action. At this time, the telescopic rotating motor 45 is started, thereby driving the push plate 48 to rotate downward until the picking clamp 49 drops to a specified distance. When the push plate 48 contacts the swing plate 415 during the downward rotation, the swing plate 415 is pushed to move to both sides while compressing the torsion spring 414. During the downward swinging of the swing plate 415, until the conductive plate 53 contacts the inner wall of the positioning arc plate 44, the movable rod 51 is squeezed and moves toward the center. When the conductive plate 53 contacts the conductive ring in the guide limit tube 52, the current of the controller passes through the conductive plate 53 and the conductive ring. The ring is transmitted to the electromagnet 410, so that the electromagnet 410 is energized to generate the same polarity as the blocking rod. Under the effect of like repels like, the electromagnet 410 pushes the blocking rod to move downward. At this time, the blocking rod rotates under the action of the telescopic rotating motor 45. When the blocking rod penetrates into the countersunk slot of the screw, the pressure sensor on the surface of the blocking rod detects the pressure and feeds back a signal to the controller, thereby controlling the telescopic rotating motor 45 to stop rotating. At this time, the blocking rod 412 penetrates into the countersunk slot of the screw, completing the automatic and precise alignment of the screw, realizing automatic grasping of the screw, preparing for the screw feeding action in advance, saving a lot of time, avoiding the situation where the screw cannot be accurately aligned during feeding, reducing the probability of incorrect feeding, and improving work efficiency.

[0068] When the material picking process is completed, the controller controls the horizontal conveying motor 31 and the longitudinal conveying motor 34 to convey the screws to the top of the material picking place, and the controller controls the telescopic rotating motor 45 to continue to start, so that the swing rod squeezes the active rod 51 to extend to the limit length. At this time, the swing plate 415 continues to rotate downward under the action of the telescopic rotating motor 45, and the swing plate 415 squeezes and pushes the extended active rod 51 to move downward. On the one hand, the swing plate 415 pulls the cross bar 413 downward to squeeze the spring telescopic rod, and on the other hand, the pull rope 55 is pulled during the downward movement of the cross bar 413, and the pull rope 55 is pulled around the support rod 54. The dynamic clamping block 46 compresses the reset spring 47, slowly reducing the clamping force of the clamping block 46 on the screw to prevent the screw from falling off due to lack of clamping force during the feeding process, and cooperates with the telescopic rotating motor 45 to drive the material picking clamp 49 to push the screw to move downward while rotating to complete the installation of the screw. When the telescopic rotating motor 45 rotates downward, it drives the cleaning brush 56 to clean the inner wall of the clamping block 46 to prevent impurities and dust from adhering to the inner wall of the clamping block 46 due to long-term clamping of the screw, affecting the clamping accuracy, while avoiding wear of the clamping block 46 and increasing the service life of the device.

[0069] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A servo automatic feeding device with precise rotation function, characterized in that: A servo automatic feeding device with a precise rotation function comprises a mounting frame (1), a material taking platform (2), a conveying unit (3), a material taking unit (4) and a feeding unit (5), wherein the mounting frame (1) is placed on a horizontal basis, the material taking platform (2) is placed on a horizontal basis, the material taking platform (2) is placed below the mounting frame (1), the conveying unit (3) is fixedly connected to the mounting frame (1), the material taking unit (4) is fixedly connected to the conveying unit (3), the material taking unit (4) has a function of increasing the feeding rate, the feeding unit (5) is fixedly connected to the material taking unit (4), and the feeding unit (5) has a cleaning effect on the material taking unit (4); The material taking unit (4) comprises a connecting plate (41), a driving motor (42), a clamping plate (43), a positioning arc plate (44), a telescopic rotating motor (45), a clamping block (46), a return spring (47) and a push plate (48); the connecting plate (41) is fixedly connected to the longitudinal moving plate (35); the fixed end of the driving motor (42) is fixedly connected to the connecting plate (41) via a connecting rod; the output end of the driving motor (42) is fixedly connected to the clamping plate (43); the positioning arc plate (44) is fixedly mounted on the output end of the driving motor (42); the fixed end of the telescopic rotating motor (45) is fixedly mounted on the connecting plate (41); the output end of the telescopic rotating motor (45) is fixedly connected to the push plate (48); and the clamping block (46) is connected to the positioning arc plate (44) via a return spring (47); The material picking unit (4) further comprises a material picking clamp (49), an electromagnet (410), an elastic rope (411), a shift rod (412), a cross rod (413), a torsion spring (414), a swing plate (415) and a spring telescopic tube (416); the material picking clamp (49) is fixedly mounted on the output end of the telescopic rotating motor (45); the material picking clamp (49) is composed of a cylindrical portion and an extension portion; the extension portion of the material picking clamp (49) is provided with a rectangular through slot; the electromagnet (410) is fixedly mounted in the rectangular through slot of the extension portion of the material picking clamp (49); the electromagnet (410) is connected to the material picking clamp (49) by the elastic rope ( The gear rod (411) is connected to the gear rod (412), the gear rod (412) is slidably mounted in a rectangular through groove of an extension portion of the material picking clamp (49), a thin film pressure sensor is attached to the surface of the gear rod (412), both ends of the cross rod (413) are fixedly connected to the movable end of the spring telescopic tube (416), the cross rod (413) is connected to the swing plate (415) via a torsion spring (414), the positioning arc plate (44) is provided with a semicircular through groove, the fixed end of the spring telescopic tube (416) is fixedly mounted on the semicircular through groove of the positioning arc plate (44), and the cross rod (413) is fixedly connected to the feeding unit (5).

2. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The material taking platform (2) comprises a transverse material taking motor (21), a longitudinal material taking motor (22), a placement platform (23) and an adjustment platform (24); the fixed end of the transverse material taking motor (21) is fixedly mounted on the placement platform (23); the output end of the transverse material taking motor (21) is fixedly connected to the adjustment platform (24); the fixed end of the longitudinal material taking motor (22) is fixedly mounted on a horizontal foundation; the output end of the longitudinal material taking motor (22) is fixedly connected to the placement platform (23); and the placement platform (23) is slidably connected to the adjustment platform (24).

3. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The conveying unit (3) comprises a transverse conveying motor (31), a slide rail (32), a transverse plate (33), a longitudinal conveying motor (34) and a longitudinal plate (35); the fixed end of the transverse conveying motor (31) is fixedly mounted on the mounting frame (1); the slide rail (32) is fixedly mounted on the surface of the mounting frame (1) at one end away from the horizontal foundation; the transverse plate (33) is slidably mounted on the slide rail (32); the transverse plate (33) is fixedly connected to the output end of the transverse conveying motor (31); the fixed end of the longitudinal conveying motor (34) is fixedly mounted on the transverse plate (33); the output end of the longitudinal conveying motor (34) is fixedly connected to the longitudinal plate (35); and the longitudinal plate (35) is fixedly connected to the material taking unit (4).

4. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The feeding unit (5) comprises a movable rod (51), a guide limiting tube (52), a conductive plate (53), a support rod (54), a pull rope (55) and a cleaning brush (56); the movable rod (51) is slidably mounted on an end of the swing plate (415) close to the telescopic rotating motor (45); a blocking block is provided at an end of the movable rod (51) away from the horizontal base; an end of the movable rod (51) close to the horizontal base passes through the guide limiting tube (52) and is fixedly connected to the conductive plate (53); the conductive plate (53) is electrically connected to the electromagnet (410); the guide The limiting tube (52) is fixedly mounted on an end surface of the swing plate (415) close to the horizontal foundation; a conductive ring is provided at one end of the guide limiting tube (52) close to the horizontal foundation; the movable rod (51) is slidably connected to the guiding limiting tube (52); the support rod (54) is fixedly mounted in the positioning arc plate (44); one end of the pull rope (55) is fixedly connected to the cross bar (413); the other end of the pull rope (55) passes around the support rod (54) and is fixedly connected to the clamping block (46); and the cleaning brush (56) is fixedly mounted on the output end of the telescopic rotating motor (45).

5. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: In the vertical direction, the longitudinal extension length of the spring extension tube (416) is greater than the longitudinal length of the clamping block (46).

6. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The gear lever (412) is made of a magnet.

7. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The elastic coefficient of the spring expansion tube (416) is greater than that of the torsion spring (414).

8. The servo automatic feeding device with precise rotation function according to claim 1, characterized in that: The number of the extension parts of the material taking clamp (49) ranges from 1 to 9, and the shape of the extension parts is rectangular, triangular or trapezoidal.

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