A screw and nut installation device for rocker arm assembly

Abstract

The present invention relates to the technical field of equipment for rocker arm assembly, and in particular to a screw and nut installation device for rocker arm assembly, wherein the technical solution comprises an installation equipment frame, a feeding mechanism box is installed in the middle of the installation equipment frame, a screw loading platform and a conveying platform are arranged at the front end of the feeding mechanism box, a feeding fixing assembly is arranged at the upper end of the screw loading platform, and a screw feeding auxiliary mechanism is installed at the feeding mechanism box facing the screw loading platform. The present invention adds a feeding auxiliary mechanism during the screw feeding process, and the screws can be transported to the feeding mechanism by a vibrating conveyor belt, and the screws of the feeding mechanism are picked up and transported, and placed at the screw unloading mechanism, and fixed in position by a clamping plate. When the product enters the lower end, it is sensed by an induction signal light, and the motor is controlled to drive the clamping block to move to both sides, so that the screws can fall smoothly to the corresponding position of the product.

Description

Technical Field

[0001] The invention relates to the technical field of rocker arm assembly equipment, in particular to a screw and nut installation equipment for rocker arm assembly. Background Art

[0002] The design and operation of the screw and nut installation equipment for rocker arm assembly is the key to ensuring the installation accuracy and stability of the rocker arm mechanical part. The screw and nut installation equipment for rocker arm assembly is a high-precision, automated assembly equipment specially used for the installation of screws and nuts on the rocker arm mechanical part. It installs the screws and nuts to be assembled to the positions specified by the equipment. The screw and nut installation equipment is an important equipment in the rocker arm assembly process. Its high-precision and high-automation characteristics ensure the accuracy and stability of the screw and nut installation of the rocker arm machine part.

[0003] The prior art also has the following defects during use:

[0004] During the screw feeding process, the screw and nut installation equipment in the prior art is prone to screw transportation deviation, which makes the screw unable to smoothly enter the position required by the equipment, which will cause great trouble in the subsequent processing process and affect the subsequent screw tightening effect. After the screw is placed in the required position, the flat-shaped screw used will cause the screwdriver to be unable to smoothly align with the groove of the screw when tightening, resulting in screwing failure, which may cause certain damage to the product. The current nut adsorption usually adopts magnetic adsorption, and the nut positioning is inaccurate, resulting in unstable adsorption and unreliable positioning, and the accuracy during the installation process cannot be guaranteed.

[0005] In view of this, we propose a screw and nut installation device for rocker arm assembly to solve the existing problems. Summary of the invention

[0006] The object of the present invention is to provide a screw and nut installation device for rocker arm assembly to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: a screw and nut installation device for rocker arm assembly, comprising an installation device frame and a screw installation device, wherein the screw installation device is installed in the installation device frame, and a screw turning head is provided at the bottom of the screw installation device;

[0008] The screw-twisting head includes an upper cylinder, a moving wheel, a mounting plate, a screwdriver and a spring. A moving groove is provided on the surface of the upper cylinder. The moving wheel is slidably mounted in the moving groove. One end of the spring is fixedly connected to the upper cylinder, and the other end is rotatably connected to the screwdriver through the mounting plate.

[0009] The upper end of the screwdriver is connected to a rotating telescopic rod, the rotating telescopic rod penetrates the spring and the upper tube and is upwardly connected to a first driving telescopic member, and the rotating telescopic rod and the moving wheel are fixedly installed;

[0010] The screw driving head moves downwards, and in the process of screwing the screw, the screwdriver is driven to press down the top of the screw to drive the moving wheel to slide circumferentially in the moving groove, thereby achieving the correspondence between the end of the screwdriver and the groove on the top of the screw.

[0011] Preferably, when the moving wheel abuts against the upper end of the moving slot, the spring is still in a compressible state. When the force applied to the screwdriver reaches a specific value, the moving slot drives the moving wheel to slide down in the moving slot, thereby preventing the end of the screwdriver from being subjected to excessive force.

[0012] Preferably, a feeding mechanism box, a screw loading platform, a conveying platform, a screw assembly mounting frame, and a nut assembly mounting frame are installed in the installation equipment frame. The screw loading platform is arranged at the front end of the feeding mechanism box, and a feeding fixing component is arranged at the upper end of the screw loading platform. A screw feeding auxiliary mechanism is installed in the feeding mechanism box toward the screw loading platform, and the screw installation equipment is fixedly installed in the screw assembly mounting frame.

[0013] Preferably, the screw installation device includes a first drive telescopic member, a first sliding mechanism and a screw tightening head, a first drive telescopic member is connected to a first sliding mechanism on one side, a moving block is installed at the lower end of the first sliding mechanism, and the first drive telescopic member penetrates downwardly through the moving block and the screw tightening head for connection.

[0014] Preferably, a cross bar is installed at the upper end of the screw feeding auxiliary mechanism, a slot is opened on one side of the cross bar, a first screw rod is arranged in the slot, a driving motor is connected to one side of the first screw rod, a moving part is installed on the first screw rod, a mounting frame is installed at the lower end of the moving part, a telescopic component is arranged in the mounting frame, a magnetic plate is connected to the lower end of the telescopic component, a mounting base is arranged in the screw feeding auxiliary mechanism, a vibrating conveyor belt is arranged on the upper end of the mounting base, a material picking mechanism is connected to the vibrating conveyor belt on the side close to the first screw rod, and the material picking mechanism is arranged below the moving block, and a screw positioning and unloading mechanism is arranged close to the material picking mechanism.

[0015] Preferably, an auxiliary feeding port is provided at the upper end of the screw positioning feeding mechanism, and a feeding cavity is connected to the lower end of the auxiliary feeding port. A control motor is provided on one side of the screw positioning feeding mechanism, and a second screw rod is connected inwardly to the control motor, and a clamping block is installed on the second screw rod, and the clamping blocks are provided on both sides of the feeding cavity. A feeding port is provided at the lower end of the feeding cavity, an induction ring is provided above the feeding port, and an induction signal light is provided downwardly from the induction ring.

[0016] Preferably, a vibration motor is arranged under the mounting base, a conveying trough is arranged on the vibration conveyor belt, one end of the vibration conveyor belt is connected to the feeding mechanism box, and the other end of the vibration conveyor belt is connected to the material taking mechanism.

[0017] Preferably, a guide rail for nut equipment is provided at the upper end of the nut assembly mounting frame, a sliding member is installed on the guide rail for nut equipment, the sliding member is connected to the nut mounting equipment, and a nut feeding auxiliary mechanism is provided in the feeding mechanism box toward the nut assembly mounting frame, and the nut feeding auxiliary mechanism is located directly below the guide rail for nut equipment.

[0018] Preferably, the nut installation device includes a second driving telescopic member, a second sliding mechanism and a connecting sliding member, a second driving telescopic member is connected to one side of the second driving telescopic member, a connecting sliding member is installed at the lower end of the second sliding mechanism, a vacuum head is provided on the connecting sliding member, and a vacuum adsorption tube is provided at the lower end of the connecting sliding member.

[0019] Preferably, a conveying track is installed on the conveying platform, a driving member is provided on one side of the conveying platform, and the driving member is connected to the conveying track, and a plurality of sliding fixing components are provided on the upper end of the conveying track, and the sliding fixing components are slidably connected to the conveying track.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention adds a feeding auxiliary mechanism during the screw feeding process, and the screws can be transported to the feeding mechanism by a vibrating feed belt. The screws of the feeding mechanism are picked up and transported, and placed on the screw unloading mechanism, and fixed in position by a clamping plate. When the product enters the lower end, it is sensed by an induction signal light, and the motor is controlled to drive the clamping block to move to both sides, so that the screws can fall smoothly to the corresponding position of the product. An upper cylinder and a moving wheel are provided in the screw installation device, and when the screwdriver position does not fit, the screwdriver moves upward, causing the moving wheel to move obliquely on the surface of the upper cylinder, so that the screwdriver rotates, and the screw is screwed. As the screwdriver rotates, the screwdriver head will fit with the screw head, ensuring that the screwdriver can fit accurately with the screw to avoid malfunction and damage to the product. In conjunction with the screw feeding mechanism, the screw can be accurately tightened in the product's slot; and through the movement of the spring and the motion wheel, the screwdriver can be prevented from being damaged by excessive pressure, thereby protecting the use of the screwdriver head; at the nut adsorption mobile device, a vacuum adsorption structure is adopted, and negative pressure is used to make the nut stably adsorbed in the specified position, thereby ensuring the accurate positioning of the nut, and because the adsorption is stable and the positioning is reliable, the accuracy of the installation process can be further guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall top view structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the overall front view structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the screw loading platform of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the screw feeding auxiliary mechanism of the present invention;

[0027] Figure 6 It is a partial structural schematic diagram of the screw feeding auxiliary mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the screw positioning and blanking mechanism of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the screw installation device of the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the screw driving head of the present invention;

[0031] Fig.10 This is a schematic diagram of the structure of the screw driving head of the present invention after the moving wheel is removed;

[0032] Fig.11 It is a structural schematic diagram of the nut installation equipment of the present invention.

[0033] In the figure: 1. Installation equipment frame; 2. Feeding mechanism box; 3. Screw loading platform; 4. Conveying platform; 5. Screw assembly mounting frame; 6. Nut assembly mounting frame; 7. Screw feeding auxiliary mechanism; 8. Nut feeding auxiliary mechanism; 9. Guide rail for nut equipment; 10. Sliding member; 11. Screw installation equipment; 12. Nut installation equipment; 13. Sliding fixing assembly; 14. Conveying track; 15. Driving member; 16. Loading and fixing assembly; 17. Crossbar; 18. Driving motor; 19. Screw positioning and unloading mechanism; 20. Conveying trough; 21. Vibrating motor; 22. Mounting base; 23. Vibrating conveyor belt; 24. Moving member; 25. Slotting; 26. First Screw rod; 27, telescopic assembly; 28, magnetic plate; 29, material picking mechanism; 30, mounting frame; 31, auxiliary unloading port; 32, unloading cavity; 33, clamping block; 34, unloading port; 35, induction ring; 36, induction signal light; 37, second screw rod; 38, control motor; 39, first drive telescopic member; 40, first sliding mechanism; 41, moving block; 42, screw turning head; 43, upper cylinder; 44, rotating telescopic rod; 45, moving wheel; 46, spring; 47, screwdriver; 48, mounting plate; 49, second sliding mechanism; 50, second drive telescopic member; 51, connecting sliding member; 52, vacuum head; 53, vacuum adsorption tube. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Embodiment 1

[0036] like Figures 1 to 11 As shown, a screw and nut installation device for rocker arm assembly proposed by the present invention includes an installation device frame 1, a feeding mechanism box 2 is installed in the middle of the installation device frame 1, a screw loading platform 3 and a conveying platform 4 are arranged at the front end of the feeding mechanism box 2, a loading fixing component 16 is arranged at the upper end of the screw loading platform 3, and a screw feeding auxiliary mechanism 7 is installed on the feeding mechanism box 2 toward the screw loading platform 3.

[0037] A plurality of vibrating loading plates are arranged in the feeding mechanism box 2, and the materials are vibrated by the vibrating plates so that the screws and nuts are conveyed out of the feeding mechanism box 2 respectively, and the products are placed on the screw loading platform 3. The screws are accurately put into the corresponding positions of the products through the feeding mechanism box 2, and then fixed to the conveying platform 4 for the installation of the screws and nuts.

[0038] Furthermore, a screw assembly mounting frame 5 and a nut assembly mounting frame 6 are arranged on the side of the conveying platform 4, a screw assembly mounting frame 5 is installed with a screw installation device 11, a screw tightening head 42 is arranged at the lower end of the screw installation device 11, an upper cylinder 43 is arranged in the screw tightening head 42, a plurality of groups of motion grooves are opened on the surface of the upper cylinder 43, and a motion wheel 45 is installed on the motion groove, a spring 46 is connected to one end of the upper cylinder 43, the spring 46 is downwardly connected to a mounting plate 48, a screwdriver 47 is arranged at the lower end of the mounting plate 48, a rotating telescopic rod 44 is connected to the upper end of the screwdriver 47, the rotating telescopic rod 44 passes through the spring 46 and the upper cylinder 43, is connected to the first driving telescopic member 39, and the rotating telescopic rod 44 and the motion wheel 45 are connected and installed.

[0039] The upper cylinder 43 and the outer shell of the screw turning head 42 are fixedly installed, and the movement groove on the surface of the upper cylinder 43 is set as an oblique groove. The surface of the screwdriver 47 is provided with a straight-shaped protrusion, and this protrusion can just correspond to the straight-shaped groove on the surface of the screw. When the screwdriver 47 is facing the surface of the screw, because the protrusion and the groove do not necessarily correspond, the screwdriver 47 is pressed down and will be subjected to an upward force. The upward force causes the screwdriver 47 to move upward. During the movement, the spring 46 is compressed, and the movement wheel 45 starts to move in the oblique groove. During the movement of the oblique groove, the rotating telescopic rod 44 will rotate together with the screwdriver 47. During the rotation of the screwdriver 47, the straight-shaped protrusion on the head of the screwdriver 47 will fit into the straight-shaped groove on the screw head, and the first driving telescopic member 39 can be used to tighten it later. The moving wheel will continue to move to the upper end of the inclined groove, and the whole will be screwed together. After the tightening is completed, the screwdriver 47 loses pressure and the spring 46 begins to reset. The spring 46 resets and drives the screwdriver 47 to reset together. The reset of the screwdriver 47 will cause the moving wheel 45 to move to the initial position through the inclined groove.

[0040] The connection end of the spring 46 and the mounting plate 48 is divided into an inner and outer plate, the inner plate is fixedly connected to the spring, the outer plate is fixedly connected to the screwdriver 47, and a ball is arranged between the inner and outer plates to reduce the friction between the inner and outer plates. The moving wheel 45 is a wheel-shaped part with a depression in the middle, and the outer side of the moving wheel 45 is in sliding contact with the outer surface of the inclined groove, and the inner side of the moving wheel 45 is in sliding contact with the inner surface of the inclined groove. The moving wheel 45 is slidably installed in the inclined groove through the depression in the middle, and a mounting block is arranged in the middle of the entire moving wheel 45, which is fixedly connected to the side wall of the rotating telescopic rod 44 through the mounting block.

[0041] The screw driving head 42 moves downward and drives the screwdriver 47 to press down the top of the screw during the screw tightening process to drive the moving wheel 45 to slide circumferentially in the moving groove so as to achieve the correspondence between the end of the screwdriver 47 and the groove at the top of the screw. When the screw driving head 42 is in the process of screw tightening the screw and the degree of tightening of the screwdriver 47 and the screw is close to the set value, the screw driving head 42 continues to move. At this time, the moving wheel 45 will slide down in the moving groove to prevent the end of the screwdriver 47 from being subjected to excessive force.

[0042] During the downward pressure of the screw-tightening head 42, the moving wheel 45 will rotate circumferentially along the moving groove, thereby achieving the correspondence between the screwdriver 47 and the screw. During the screwing process, the spring 46 still maintains a certain compressibility. When the screwing action is about to end, due to the influence of external factors between the screwdriver 47 and the screw, the time required for screwing the screwdriver 47 and different groups of screws is different. After some screws are tightened, the screwdriver 47 may still screw the screws for a shorter time. In order to prevent the screwdriver 47 from being damaged by excessive pressure, the moving wheel 45 will bear a part of the force, so that the moving wheel 45 starts the reset movement along the moving groove in advance, and further compresses the spring 46 to prevent the screwdriver 47 and the groove on the screw from being in the screwing force all the time.

[0043] Furthermore, the screw installation device 11 includes a first drive telescopic member 39, a first sliding mechanism 40 and a screw tightening head 42. The first drive telescopic member 39 is connected to the first sliding mechanism 40 on one side, and a moving block 41 is installed at the lower end of the first sliding mechanism 40. The first drive telescopic member 39 penetrates downwardly through the moving block 41 and the screw tightening head 42 for connection.

[0044] The first drive telescopic member 39 controls the moving block 41 to move on the first sliding mechanism 40, and when the screw turning head 42 approaches the screw, the first drive telescopic member 39 makes the screwdriver 47 close to the screw product, and makes the screwdriver 47 acted upon by force, so that it automatically fits with the surface of the screw, so that the screwdriver 47 can fit into the screw slot 25. When the screwdriver 47 fits, the first drive telescopic member 39 can smoothly tighten the screw in the groove of the product. The first drive telescopic member 39 is equipped with a cylinder to drive the screwdriver to move vertically, and is equipped with a motor to control the screwdriver to perform a screwing motion.

[0045] Furthermore, a cross bar 17 is installed at the upper end of the screw feeding auxiliary mechanism 7, a slot 25 is opened on one side of the cross bar 17, a first screw rod 26 is arranged in the slot 25, a driving motor 18 is connected to one side of the first screw rod 26, a moving part 24 is installed on the first screw rod 26, a mounting frame 30 is installed at the lower end of the moving part 24, a telescopic component 27 is arranged in the mounting frame 30, a magnetic plate 28 is connected to the lower end of the telescopic component 27, a mounting base 22 is arranged in the screw feeding auxiliary mechanism 7, a vibrating conveyor belt 23 is arranged on the upper end of the mounting base 22, a feeding mechanism 29 is connected to the vibrating conveyor belt 23 on the side close to the first screw rod 26, and the feeding mechanism 29 is arranged below the moving block 41, and a screw positioning and unloading mechanism 19 is arranged close to the feeding mechanism 29.

[0046] After the screws are loaded through the vibrating loading plate in the feeding mechanism box 2, they are connected to the vibrating conveyor belt 23. The screws are transported with their heads facing upward in the vibrating conveyor belt 23, and then transported to the picking mechanism 29. When at the picking mechanism 29, the driving motor 18 controls the first screw rod 26 to rotate, thereby controlling the moving part 24 to move, and a telescopic component 27 is provided at the lower end of the moving part 24. The telescopic component 27 is extended and retracted through control, so that the magnetic suction plate 28 absorbs a group of screws downward and transports them to the screw positioning and unloading mechanism 19.

[0047] Furthermore, an auxiliary unloading port 31 is opened at the upper end of the screw positioning unloading mechanism 19, and the lower end of the auxiliary unloading port 31 is connected to a unloading cavity 32. A control motor 38 is provided on one side of the screw positioning unloading mechanism 19, and the control motor 38 is inwardly connected to a second screw rod 37. A clamping block 33 is installed on the second screw rod 37, and the clamping block 33 is arranged on both sides of the unloading cavity 32.

[0048] The screw enters the feeding cavity 32 through the auxiliary feeding port 31, and is clamped in the feeding cavity by the clamping block 33 in the middle of the feeding cavity 32. When the induction ring 35 at the lower end of the feeding cavity detects that the product below has arrived at the designated location through the induction signal light 36, the control motor 38 controls the second screw rod 37 to move the clamping block 33 to both ends, and the screw smoothly falls downward through the feeding cavity 32, and is buffered by the feeding port 34, thereby entering the teammate slot 25 on the product. The control motor 38 and the second screw rod 37 are both installed at the rear end of the feeding cavity, and the clamping block 33 can move smoothly through the sliding groove set inside the screw positioning feeding mechanism 19, thereby controlling the falling of the screw.

[0049] Furthermore, a material discharge port 34 is provided at the lower end of the material discharge cavity 32 , an induction ring 35 is provided above the material discharge port 34 , and an induction signal light 36 is provided downwardly from the induction ring 35 .

[0050] The induction signal light 36 senses whether the product is in the lower position. By sensing the position of the product, the control motor 38 is rotated to control the movement of the clamping block 33, thereby controlling whether the screw falls downward.

[0051] Furthermore, a vibration motor 21 is provided under the mounting base 22 , a conveying trough 20 is provided on the vibration conveyor belt 23 , one end of the vibration conveyor belt 23 is connected to the feeding mechanism box 2 , and the other end of the vibration conveyor belt 23 is connected to the material taking mechanism 29 .

[0052] The vibration motor 21 enables the screws to be transported and moved smoothly in the vibration conveyor belt 23 and subsequently enter the material taking mechanism 29 . The vibration conveyor belt 23 transports the screw materials from the vibration plate in the feeding mechanism box 2 to the material taking mechanism 29 .

[0053] Furthermore, a guide rail 9 for nut equipment is provided at the upper end of the nut assembly mounting frame 6, a sliding member 10 is installed on the guide rail 9 for nut equipment, the sliding member 10 is connected to the nut mounting device 12, and a nut feeding auxiliary mechanism 8 is provided at the feeding mechanism box 2 toward the nut assembly mounting frame 6, and the nut feeding auxiliary mechanism 8 is located directly below the guide rail 9 for nut equipment.

[0054] The nut installation device 12 is installed on the nut assembly mounting frame 6, and the nut installation device 12 can be moved to a certain extent through the guide rail on the nut assembly mounting frame 6. When the nut installation device 12 moves to the nut feeding auxiliary mechanism 8, the nut is adsorbed and then transported to the upper end of the conveying track 14 to facilitate subsequent nut tightening.

[0055] Furthermore, the nut installation device 12 includes a second driving telescopic member 50, a second sliding mechanism 49 and a connecting sliding member 51. The second driving telescopic member 50 is connected to the second sliding mechanism 49 on one side, and the connecting sliding member 51 is installed at the lower end of the second sliding mechanism 49. A vacuum head 52 is arranged on the connecting sliding member 51, and a vacuum adsorption tube 53 is arranged at the lower end of the connecting sliding member 51.

[0056] The nut installation device 12 uses the vacuum head 52 to create a negative pressure state inside the connecting slide 51, thereby controlling the connecting slide 51 to slide on the second sliding mechanism 49 through the second driving telescopic member 50, allowing the vacuum adsorption tube 53 at the lower end to approach the nut and adsorb the nut. When the product is transported to the lower end of the nut installation device 12, the vacuum adsorption tube 53 is controlled to be sleeved on the specified position of the product, and to be rotated and tightened.

[0057] Furthermore, a conveying track 14 is installed on the conveying platform 4, a driving member 15 is provided on one side of the conveying platform 4, and the driving member 15 is connected to the conveying track 14, and multiple groups of sliding and fixing components 13 are provided on the upper end of the conveying track 14, and the sliding and fixing components 13 are slidably connected to the conveying track 14.

[0058] The sliding fixing assembly 13 is used to install products, and is installed as a whole on the conveying track 14 . The sliding fixing assembly 13 can be controlled by the driving member 15 to move back and forth on the conveying track 14 .

[0059] Furthermore, the screw loading platform 3, the conveying platform 4, the screw assembly mounting frame 5 and the nut assembly mounting frame 6 are all installed at the front end of the feeding mechanism box 2, the screw assembly mounting frame 5 is installed close to the screw loading platform 3, and the screw assembly mounting frame 5 is located at the rear end of the conveying platform 4, the nut assembly mounting frame 6 is installed away from the screw loading platform 3, and the nut assembly mounting frame 6 is located on one side of the conveying platform 4.

[0060] The overall assembly process is as follows: first, the product is placed on the screw loading platform 3, and after the screws are loaded, they are fixed on the conveying platform 4, and then they are moved on the conveying platform 4 to be transported to the lower end of the screw assembly and mounting frame 5, and then the screws are tightened by the screw assembly and mounting frame 5, and then they are transported on the conveying platform 4 to the lower end of the nut assembly and mounting frame 6, and the nuts are tightened by the nut assembly and mounting frame 6.

[0061] The working principle of the screw and nut installation equipment for rocker arm assembly based on Example 1 is: after the product is placed on the screw loading platform 3, the screw feeding auxiliary mechanism 7 receives the screws from the feeding mechanism box 2 and transports them to the upper end of the product, and allows them to fall accurately into the product groove. Subsequently, the product is placed on the conveying platform 4, and the product moves on the conveying platform 4 to the bottom of the screw installation equipment 11, and the screws are tightened on the product through the screw installation equipment 11. After the screws are tightened, the product continues to move on the conveying platform 4 and moves to the bottom of the nut installation equipment 12. The nuts are put on the product and tightened through the nut installation equipment 12.

[0062] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A screw and nut installation device for rocker arm assembly, comprising an installation device frame (1) and a screw installation device (11), Features: The screw installation device (11) is installed in the installation device frame (1), and a screw tightening head (42) is provided at the bottom of the screw installation device (11); The screw-tightening head (42) includes an upper cylinder (43), a moving wheel (45), a mounting plate (48), a screwdriver (47) and a spring (46); a moving groove is provided on the surface of the upper cylinder (43); the moving wheel (45) is slidably mounted in the moving groove; one end of the spring (46) is fixedly connected to the upper cylinder (43) and the other end is rotatably connected to the screwdriver (47) via the mounting plate (48); The upper end of the screwdriver (47) is connected to a rotating telescopic rod (44), the rotating telescopic rod (44) passes through the spring (46) and the upper cylinder (43) and is upwardly connected to a first driving telescopic member (39), and the rotating telescopic rod (44) and the moving wheel (45) are fixedly mounted; The screw-tightening head (42) moves downwards and drives the screwdriver (47) to press down the top of the screw during the screw-tightening process, thereby driving the moving wheel (45) to slide circumferentially in the moving groove, thereby achieving the correspondence between the end of the screwdriver (47) and the groove at the top of the screw; When the moving wheel (45) abuts against the upper end of the moving slot, the spring (46) is still in a compressible state, and when the force applied to the screwdriver (47) reaches a specific value, the moving slot drives the moving wheel (45) to slide down in the moving slot, thereby preventing the end of the screwdriver (47) from being subjected to excessive force; The installation equipment frame (1) is installed with a feeding mechanism box (2), a screw loading platform (3), a conveying platform (4), a screw assembly mounting frame (5), and a nut assembly mounting frame (6); the screw loading platform (3) is arranged at the front end of the feeding mechanism box (2), and a feeding fixing component (16) is arranged at the upper end of the screw loading platform (3); the feeding mechanism box (2) is installed with a screw feeding auxiliary mechanism (7) toward the screw loading platform (3); and the screw installation equipment (11) is fixedly installed in the screw assembly mounting frame (5); The screw installation device (11) comprises a first drive telescopic member (39), a first sliding mechanism (40) and a screw screwing head (42); one side of the first drive telescopic member (39) is connected to the first sliding mechanism (40); a moving block (41) is installed at the lower end of the first sliding mechanism (40); the first drive telescopic member (39) penetrates downwards through the moving block (41) and the screw screwing head (42) to be connected; A cross bar (17) is installed at the upper end of the screw feeding auxiliary mechanism (7), a slot (25) is provided on one side of the cross bar (17), a first screw rod (26) is arranged in the slot (25), a driving motor (18) is connected to one side of the first screw rod (26), a moving part (24) is installed on the first screw rod (26), a mounting frame (30) is installed at the lower end of the moving part (24), a telescopic component (27) is arranged in the mounting frame (30), a magnetic suction plate (28) is connected to the lower end of the telescopic component (27), a mounting base (22) is arranged in the screw feeding auxiliary mechanism (7), a vibrating conveyor belt (23) is arranged at the upper end of the mounting base (22), a material picking mechanism (29) is connected to the vibrating conveyor belt (23) on a side close to the first screw rod (26), and the material picking mechanism (29) is arranged below the moving block (41), and a screw positioning unloading mechanism (19) is arranged close to the material picking mechanism (29).

2. A screw and nut installation device for rocker arm assembly according to claim 1, Features: An auxiliary material discharge port (31) is provided at the upper end of the screw positioning material discharge mechanism (19), and a material discharge chamber (32) is connected to the lower end of the auxiliary material discharge port (31). A control motor (38) is provided on one side of the screw positioning material discharge mechanism (19), and a second screw rod (37) is connected inwardly to the control motor (38). A clamping block (33) is installed on the second screw rod (37), and the clamping block (33) is provided on both sides of the material discharge chamber (32). A material discharge port (34) is provided at the lower end of the material discharge chamber (32), and an induction ring (35) is provided above the material discharge port (34). An induction signal light (36) is provided downwardly from the induction ring (35).

3. A screw and nut installation device for rocker arm assembly according to claim 1, Features: A vibration motor (21) is disposed at the bottom of the mounting base (22), a conveying trough (20) is disposed on the vibration conveyor belt (23), one end of the vibration conveyor belt (23) is connected to the feeding mechanism box (2), and the other end of the vibration conveyor belt (23) is connected to the material taking mechanism (29).

4. A screw and nut installation device for rocker arm assembly according to claim 1, Features: A guide rail (9) for a nut device is arranged at the upper end of the nut assembly mounting frame (6), a sliding member (10) is installed on the guide rail (9) for the nut device, and the sliding member (10) is connected to a nut mounting device (12). A nut feeding auxiliary mechanism (8) is arranged on the feeding mechanism box (2) toward the nut assembly mounting frame (6), and the nut feeding auxiliary mechanism (8) is located directly below the guide rail (9) for the nut device.

5. A screw and nut installation device for rocker arm assembly according to claim 4, Features: The nut mounting device (12) comprises a second driving telescopic member (50), a second sliding mechanism (49) and a connecting sliding member (51); one side of the second driving telescopic member (50) is connected to the second sliding mechanism (49); the lower end of the second sliding mechanism (49) is provided with a connecting sliding member (51); a vacuum head (52) is provided on the connecting sliding member (51); and a vacuum adsorption tube (53) is provided at the lower end of the connecting sliding member (51).

6. A screw and nut installation device for rocker arm assembly according to claim 1, Features: A conveying track (14) is installed on the conveying platform (4), a driving member (15) is provided on one side of the conveying platform (4), and the driving member (15) and the conveying track (14) are connected, and a plurality of groups of sliding fixing components (13) are provided on the upper end of the conveying track (14), and the sliding fixing components (13) and the conveying track (14) are slidably connected.

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