Automatic screwing device for a ring frame

Abstract

The utility model discloses a kind of automatic installation screw device of leather ring frame, including pneumatic automatic screw feeder, lower pressure cylinder, servo motor, high-strength guide sleeve, screwdriver bit, leather ring frame tool fixture, station switching cylinder, the utility model is using 2 pneumatic automatic screw feeder respectively to 4 screwdriver bit in M5 and M6 screw are transported, by servo motor drive, M5 and M6 screw are tightened simultaneously on specially designed leather ring frame fixture, again by the motor at the bottom of leather ring frame, bottom stud is tightened, the utility model assembly leather ring frame efficiency is high, consistency is good, and the force of screw tightening is controllable.The utility model is accurate, and multi-dimension guarantees installation quality: servo motor is used to control screwdriver bit rotating speed and torque, avoid screw too loose or too tight;While the sliding guide of the ladder baffle and sliding sleeve of tool fixture, ensure that screw and workpiece hole position accurate alignment.

Description

Technical Field

[0001] This utility model relates to the field of textile hoops, and in particular to an automatic screw mounting device for hoops. Background Technology

[0002] In recent years, synthetic fiber textiles have accounted for an increasingly larger share of the textile industry, and the market demand for synthetic fiber textiles has also been growing daily. New types of clothing fabrics, textiles, conveyor belts, fishing nets, and even medical surgical gowns and gloves are all ubiquitous. In the production process of synthetic fiber spinning, the rubber ring frame is an essential component. It plays a crucial role in pressing the yarn, controlling the yarn tension, promoting yarn formation, and increasing elasticity during the twisting process, and is widely used in synthetic fiber textile machinery. However, due to the special structural design of the rubber ring frame, the tightening of screws and bottom studs after assembly still requires manual labor. Manual tightening of screws suffers from problems such as poor torque control, low efficiency, and a tendency to produce defective products.

[0003] The traditional method for installing rubber band frames involves manually assembling all components, placing the corresponding screws on the frame, tightening them with a pneumatic screwdriver, and then manually tightening the studs at the bottom of the frame with an Allen wrench. This method is slow, the tightening force is uncontrollable, and it easily leads to defective products requiring rework, affecting production and order delivery times. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an automatic screw mounting device for leather ring frames.

[0005] This utility model is achieved through the following technical solution: An automatic screw mounting device for a rubber band frame includes a frame, a column mounted on the frame, a pressure cylinder mounting plate fixed to the top of the column, a pressure cylinder mounted on the pressure cylinder mounting plate, an upper sliding sleeve and a lower sliding sleeve slidably mounted on the outside of the column below the pressure cylinder mounting plate, an upper mounting plate and a lower mounting plate fixedly connected to the upper and lower sliding sleeves respectively, a spring telescopic rod connecting the upper and lower mounting plates, a lower sliding sleeve limiting block mounted at the lower end of the column, the upper mounting plate fixedly connected to the moving end of the pressure cylinder, a servo motor mounted on the upper mounting plate, and a screw mounted below the lower mounting plate. The machine includes a screw-driving assembly connected to a servo motor; a screw feeder is also mounted on the frame, connected to the screw-driving assembly via a screw delivery pipe; a guide rail and a station switching cylinder are also mounted on the frame, with a sliding plate slidably mounted on the guide rail, and rubber ring holder fixtures fixed at the left and right ends of the sliding plate respectively; the station switching cylinder drives the sliding plate to slide left and right, causing the rubber ring holder fixtures at both ends to alternately be positioned below the screw-driving assembly; a front-side stud-tightening assembly is also mounted on the frame, positioned in front of the rubber ring holder fixture located directly below the screw-driving assembly. The screw-driving assembly includes a screw-holding sleeve installed under the lower mounting plate and a screw-driving bit connected to the output end of a servo motor. The output end of the servo motor and the screw-driving bit are connected via a universal drive shaft and a connecting shaft. The screw inlet on the side of the screw-holding sleeve is connected to a screw feeder via a screw conveying pipe. The screw-driving bit extends from the top of the screw-holding sleeve into the inside of the screw-holding sleeve.

[0006] The screw-driving assembly consists of four parts arranged in a square. The screw feeder includes an M5 screw feeder and an M6 screw feeder. The M6 ​​screw feeder is connected to one of the screw-driving assemblies, and the M5 screw feeder is connected to the other three screw-driving assemblies.

[0007] The screw tightening assembly includes an ejector cylinder and a screw tightening servo motor. The screw tightening servo motor is fixedly connected to the output end of the ejector cylinder, and an electric screwdriver bit is connected to the output end of the screw tightening servo motor.

[0008] The aforementioned leather ring frame fixture includes a base plate, with stepped baffles fixed on the left and right sides of one end of the upper surface of the base plate. The stepped baffles match the shape of the leather ring frame, and positioning holes are also provided on the base plate.

[0009] A shaft limiting block is fixed on the side of the lower mounting plate, and the connecting shaft passes through the round hole on the shaft limiting block.

[0010] The working principle of this utility model is as follows: Leather ring frame positioning and workstation switching: The workers assemble the rubber ring frame and place it on the rubber ring frame fixtures at both ends of the skateboard. The rubber ring frame fixtures are fixed in position by stepped baffles to prevent displacement.

[0011] The station switching cylinder drives the slide plate to slide along the guide rail, so that the two tooling fixtures move alternately to the bottom of the screw-driving assembly, realizing the simultaneous "material loading-processing".

[0012] Screw delivery and supply: The screw feeder (M5 and M6 models) delivers screws of the corresponding specifications precisely into the screw-holding sleeve of the screw-driving assembly via a screw conveyor pipe.

[0013] The four screw-driving components are arranged in a square, with one connected to an M6 screwdriver and three connected to an M5 screwdriver, to match the screw requirements of different positions on the leather ring frame.

[0014] Automated stud tightening operation: The downward-pressing cylinder pushes the upper mounting plate downwards, thereby pushing the lower mounting plate and the screw-driving assembly downwards as a whole until the lower sliding sleeve contacts the lower sliding sleeve limit block. At this point, the screw-driving assembly is close to the rubber ring frame. The downward-pressing cylinder continues to press down, compressing the spring telescopic rod, and the upper mounting plate continues to move downwards. The screwdriver bit connected to the output end of the servo motor pushes the screw out of the screw-holding sleeve and into the screw hole of the rubber ring frame. The servo motor starts, driving the screwdriver bit to rotate and tighten the screw. At the same time, the front stud tightening assembly (consisting of an ejecting cylinder + motor + electric screwdriver bit) simultaneously processes the studs on the front side of the rubber ring frame (i.e., the studs at the bottom of the rubber ring frame, which are inserted by the worker during assembly; here, only the motor needs to drive the electric screwdriver bit to tighten the studs).

[0015] Reset and Loop After the screws are tightened, the lower cylinder moves the upper mounting plate, the screw-driving assembly, and the lower mounting plate to move up and reset. The station switching cylinder moves the processed rubber ring frame away and moves the rubber ring frame to be processed to the processing position, starting the next cycle.

[0016] The advantages of this utility model are: This utility model uses two pneumatic automatic screw feeders to feed M5 and M6 screws into four screwdriver bits respectively. Driven by a servo motor, the M5 and M6 screws are tightened simultaneously on a specially designed rubber ring holder clamp. Then, the bottom stud is tightened by a motor located at the bottom of the rubber ring holder. This utility model has high efficiency in assembling the rubber ring holder, good consistency, and controllable screw tightening force.

[0017] This utility model is highly efficient and achieves "dual-station parallel processing": through the station switching cylinder and dual tooling fixture design, when one station is processing, the other station can simultaneously load / unload materials without waiting, greatly increasing the processing volume per unit time; This utility model offers high precision and ensures installation quality from multiple dimensions: a servo motor controls the screwdriver bit's speed and torque to prevent screws from being too loose or too tight; meanwhile, the stepped baffle and sliding guide of the tooling fixture ensure precise alignment between the screw and the workpiece hole.

[0018] This utility model is highly adaptable and compatible with multiple screw specifications: by using two screw feeders, M5 and M6, and four screw-driving components with different connections, two types of screws can be installed simultaneously, adapting to the multi-screw installation needs of the leather ring frame without changing the equipment.

[0019] This utility model has a stable structure and reduces the risk of failure: the servo motor output shaft limit block on the lower mounting plate can limit the radial wobble of the motor output shaft, reduce component wear during long-term operation, and extend the service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present utility model; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram of the structure of the leather ring frame tooling fixture of this utility model. Detailed Implementation

[0021] like Figure 1-4As shown, an automatic screw-installing device for a rubber band frame includes a frame 1, a column 2 mounted on the frame 1, a pressing cylinder mounting plate 3 fixed to the top of the column 2, a pressing cylinder 4 mounted on the pressing cylinder mounting plate 3, an upper sliding sleeve 5 and a lower sliding sleeve 6 slidably mounted on the outside of the column 2 below the pressing cylinder mounting plate 3, an upper mounting plate 8 and a lower mounting plate 9 fixedly connected to the upper and lower sliding sleeves 5 and 6 respectively, and a spring telescopic rod 10 connecting the upper and lower mounting plates 8 and 9, a lower sliding sleeve limiting block 7 mounted at the lower end of the column 2, the upper mounting plate 8 fixedly connected to the moving end of the pressing cylinder 4, a servo motor 11 mounted on the upper mounting plate 8, and a screw-driving assembly mounted below the lower mounting plate 9, the screw-driving assembly connected to the servo motor 11. After the lower sliding sleeve 6 contacts the lower sliding sleeve limiting block 7, the lower mounting plate 9 descends to its lowest point. Because the upper and lower mounting plates 8 and 9 are connected by the spring telescopic rod 10, the upper mounting plate 8 is still... Under the action of the downward pressing cylinder 4, it can continue to move downward, completing the ejection and tightening of the screw; a screw feeder 12 is also installed on the frame 1, and the screw feeder 12 is connected to the screw driving assembly through a screw conveying pipe; a guide rail 13 and a station switching cylinder 14 are also installed on the frame 1, and a sliding plate 15 is slidably installed on the guide rail 13. Leather ring bracket fixtures 16 are fixed to the left and right ends of the sliding plate 15 respectively. The station switching cylinder 14 drives the sliding plate 15 to slide left and right, so that the two ends... The rubber ring frame fixture 16 is alternately positioned below the screw-driving assembly; the slide plate 15 is driven to slide by the station switching cylinder 14, so that the rubber ring frame fixture 16 at both ends is alternately positioned below the screw-driving assembly, so that the feeding and processing can be carried out simultaneously; a front-side stud-tightening assembly is also installed on the frame 1. The front-side stud-tightening assembly is located on the front side of the rubber ring frame fixture 16 located directly below the screw-driving assembly, and is used to tighten the studs at the bottom of the rubber ring frame. The studs are directly inserted when the worker assembles the rubber ring frame. The screw-driving assembly includes a screw-holding sleeve 17 mounted under the lower mounting plate 9 and a screwdriver bit connected to the output end of a servo motor 11. The output end of the servo motor and the screwdriver bit are connected via a universal drive shaft 18 and a connecting shaft 19. The screw inlet on the side of the screw-holding sleeve 17 is connected to a screw feeder 12 via a screw conveying pipe. The screwdriver bit extends from the top of the screw-holding sleeve 17 into its interior. The structure of the screw-driving assembly is existing, as are the structures and connections of the screw feeder 12, screw-holding sleeve 17, servo motor 11, and screwdriver bit. The lower end of the screw-holding sleeve 17 opens under the impact of the screwdriver bit, the screw falls, and after the screw is tightened, the screwdriver bit returns to its original position, and the lower end of the screw-holding sleeve 17 closes.

[0022] The screw-driving assembly consists of four parts arranged in a square. The screw feeder 12 includes an M5 screw feeder and an M6 screw feeder. The M6 ​​screw feeder is connected to one of the screw-driving assemblies, and the M5 screw feeder is connected to the other three screw-driving assemblies.

[0023] The screw tightening assembly includes an ejector cylinder 20 and a screw tightening servo motor 21. The screw tightening servo motor 21 is fixedly connected to the output end of the ejector cylinder 20, and an electric screwdriver bit is connected to the output end of the screw tightening servo motor 21.

[0024] like Figure 5 As shown, the rubber ring frame fixture 16 includes a base plate 22, and stepped baffles 23 are fixed on the left and right sides of one end of the upper surface of the base plate 22. The stepped baffles 23 match the shape of the rubber ring frame 24. Positioning holes are also opened on the base plate. After the rubber ring frame 24 is placed between the stepped baffles 23 on both sides, the rubber ring frame 24 cannot move forward, backward or left and right.

[0025] A shaft limiting block 25 is fixed on the upper side of the lower mounting plate 9, and the connecting shaft 19 passes through the round hole on the shaft limiting block 25 to prevent shaking when screwing.

[0026] The workflow involves manually placing the assembled rubber band holder 24 onto the rubber band holder fixture 16. After pressing the "Start" button, the station switching cylinder 14 moves the rubber band holder 24 below the screwdriver bit. After positioning, the pressing cylinder 4 presses down the upper mounting plate 8, thereby driving the lower mounting plate 9 and the screwdriver assembly downwards until the lower sliding sleeve 6 contacts the lower sliding sleeve limit block 7. At this point, the lower end of the screwdriver assembly is located 2-3 mm above the rubber band holder. The pressing cylinder 4 continues to press down, driving the servo motor 11 and the screwdriver bit to continue moving downwards. The screwdriver bit pushes the screw out of the screw holder sleeve 17 and into the screw hole of the rubber band holder 24. The servo motor 11 starts, driving the screwdriver bit to tighten the screw. The tightening force can be controlled by adjusting the current inside the servo driver, completing M6 and M5. After the screws are tightened, the motor installed at the bottom of the rubber band holder will be pushed out by the push-out cylinder 20, pressing against the bottom stud of the rubber band holder and tightening it. After reaching the tightening position, the tightening stud motor will retract, and at the same time, the pressing cylinder 4 will reset, and the upper and lower mounting plates 8 and 9 will rise back to their original positions. At this time, a new rubber band holder 24 with screws to be tightened can be placed at the other workstation. Pressing the "start" button will switch the workstation by the workstation switching cylinder 14, sending out the rubber band holder with the screws tightened (which will then be manually removed), and moving the rubber band holder with the screws to be tightened under the screwdriver bit. A new round of screw tightening will then begin. In this utility model, automatic operation is achieved through multiple sensors and an intelligent control system, which is existing technology and not within the protection scope of this utility model.

Claims

1. An automatic screw mounting device for a leather ring frame, characterized in that: The device includes a frame, on which a column is mounted. A downward-pressing cylinder mounting plate is fixed to the top of the column, and a downward-pressing cylinder is mounted on the mounting plate. An upper sliding sleeve and a lower sliding sleeve are slidably mounted on the outside of the column, below the mounting plate. An upper mounting plate and a lower mounting plate are fixedly connected to the upper and lower sliding sleeves, respectively. A spring telescopic rod connects the upper and lower mounting plates. A lower sliding sleeve limiting block is mounted at the lower end of the column. The upper mounting plate is fixedly connected to the moving end of the downward-pressing cylinder. A servo motor is mounted on the upper mounting plate, and a screw-driving assembly is mounted below the lower mounting plate. The screw-driving assembly is connected to a servo motor; a screw feeder is also installed on the frame, and the screw feeder is connected to the screw-driving assembly via a screw conveying pipe; a guide rail and a station switching cylinder are also installed on the frame, and a sliding plate is slidably installed on the guide rail. Leather ring fixtures are fixed to the left and right ends of the sliding plate, respectively. The station switching cylinder drives the sliding plate to slide left and right, so that the leather ring fixtures at both ends are alternately positioned below the screw-driving assembly; a front-side stud-tightening assembly is also installed on the frame, and the front-side stud-tightening assembly is located in front of the leather ring fixture directly below the screw-driving assembly.

2. The automatic screw mounting device for a rubber band frame according to claim 1, characterized in that: The screw-driving assembly includes a screw-holding sleeve installed under the lower mounting plate and a screw-driving bit connected to the output end of a servo motor. The output end of the servo motor and the screw-driving bit are connected via a universal drive shaft and a connecting shaft. The screw inlet on the side of the screw-holding sleeve is connected to a screw feeder via a screw conveying pipe. The screw-driving bit extends from the top of the screw-holding sleeve into the inside of the screw-holding sleeve.

3. The automatic screw mounting device for a rubber band frame according to claim 2, characterized in that: The screw-driving assembly consists of four parts arranged in a square. The screw feeder includes an M5 screw feeder and an M6 screw feeder. The M6 ​​screw feeder is connected to one of the screw-driving assemblies, and the M5 screw feeder is connected to the other three screw-driving assemblies.

4. The automatic screw mounting device for a rubber band frame according to claim 1, characterized in that: The screw tightening assembly includes an ejector cylinder and a screw tightening servo motor. The screw tightening servo motor is fixedly connected to the output end of the ejector cylinder, and an electric screwdriver bit is connected to the output end of the screw tightening servo motor.

5. The automatic screw mounting device for a rubber band frame according to claim 1, characterized in that: The aforementioned leather ring frame fixture includes a base plate, with stepped baffles fixed on the left and right sides of one end of the upper surface of the base plate, and positioning holes are also provided on the base plate.

6. The automatic screw mounting device for a rubber band frame according to claim 3, characterized in that: A shaft limiting block is fixed on the side of the lower mounting plate, and the connecting shaft passes through the round hole on the shaft limiting block.

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