An automatic equipment opening door cylinder for wire body collaborative work

Abstract

The utility model discloses a kind of automatic equipment door electric cylinder for line body collaborative operation, comprising: cylinder barrel, another end is equipped with connecting structure;Servo motor, with the end of connecting structure is connected;Ball screw, set in the inside of cylinder barrel, its end is connected with servo motor through connecting structure, piston rod is set on the outer periphery of ball screw, one end of the piston rod is connected with piston head, and the other end of piston rod is connected with equipment door after being worn out the inside of cylinder barrel;Anti-rotation structure, set in the inside of cylinder barrel.The utility model is simple in structure, by using electric cylinder to replace application in equipment with line body operation traditional air cylinder, stable speed control can be realized, ensure that door opening and closing action is stable and reliable, and accurately cooperate with the beat of production line, guarantee overall operation rhythm, with the aid of closed-loop control system, it can support multi-beat flexible production, significantly improve action efficiency, electric cylinder supports electric control buffer function, effectively reduce mechanical impact.

Description

Technical Field

[0001] This utility model relates to the field of production line equipment technology, specifically an automated door-opening electric cylinder for collaborative production line operations. Background Technology

[0002] In the field of industrial automation, especially in automated production equipment based on assembly line operations, the door opening and closing mechanism is a key component for realizing automatic material loading and unloading, equipment zoning and isolation, and maintenance intervention. Its reliability, accuracy, and safety directly affect the cycle efficiency, stability, and personal safety of the entire production line.

[0003] Currently, the door opening and closing mechanisms in this field have long relied primarily on pneumatic or hydraulic drives. Traditional pneumatic systems are widely used due to their relatively simple structure and low initial cost. However, in practical industrial applications, especially in high-frequency, high-cycle line operations, pneumatic drives have revealed many inherent technical shortcomings: First, its speed and output force are significantly affected by fluctuations in the factory's air supply pressure, making precise and smooth speed and position control difficult. High-speed operation is prone to terminal impacts, leading to mechanical vibration, excessive noise, shortened lifespan, and insufficient operational stability. Second, the pneumatic system is sensitive to changes in ambient temperature. In low-temperature environments, the performance of seals deteriorates, and air condensation may occur, easily causing start-up and shutdown failures or even system ice blockage, resulting in unplanned downtime and compromising reliability. Furthermore, seals, pistons, and air pipe joints in the pneumatic system are consumable parts that wear out quickly under high-frequency operation, leading to leaks and requiring frequent maintenance and replacement. This not only increases maintenance costs but also significantly impacts continuous production efficiency due to downtime for maintenance.

[0004] In terms of control performance, traditional pneumatic door opening and closing mechanisms typically lack an effective closed-loop position feedback mechanism, resulting in low positioning accuracy. This makes them unable to meet the precise door opening control required for switching between multiple product types and operating conditions in modern flexible manufacturing, and also makes it difficult to achieve high-precision cycle synchronization with the production line's main control system. Furthermore, pneumatic systems cannot maintain locking force after a power outage, posing a risk of self-opening and closing, and exhibiting poor emergency response and safety maintenance capabilities.

[0005] Therefore, to address the numerous drawbacks of pneumatic or hydraulic drives, a novel drive solution is urgently needed. This invention proposes an electric cylinder for opening doors in automated production line operations, aiming to fundamentally overcome the shortcomings of existing technologies and achieve high-precision, high-reliability, high-safety, and intelligent equipment door control. Utility Model Content

[0006] The purpose of this invention is to provide an automated door-opening electric cylinder for collaborative operation of a production line, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electric cylinder for opening doors in automated equipment used in collaborative production lines, comprising: The cylinder barrel has a cylinder head installed at one end and a connecting structure installed at the other end. The servo motor is connected to the end of the connecting structure and to the host computer. A ball screw is installed inside the cylinder, and its end is connected to a servo motor through a connecting structure. A piston rod is provided on the outer circumferential surface of the ball screw. One end of the piston rod is connected to the piston head, and the other end of the piston rod passes through the inside of the cylinder and is connected to the equipment door. An anti-rotation structure is installed inside the cylinder. The anti-rotation structure includes a limiting groove on the outer circumferential surface of the piston head and two sliding plates on the limiting groove. A slide channel is formed between the two sliding plates for the anti-rotation key strip on the inner wall of the cylinder to pass through. When the piston rod performs telescopic movement, the slide channel can move along the length direction of the anti-rotation key strip and restrict the piston rod from rotating.

[0008] As a further embodiment of this utility model: a nut sleeve is installed at the end of the piston head away from the piston rod, the nut sleeve is connected to the piston head by a screw, and the nut sleeve is threaded to the outer circumferential surface of the ball screw.

[0009] As a further embodiment of this utility model: the end of the piston rod away from the piston head extends through the cylinder, and a connector is installed at this end.

[0010] As a further embodiment of this utility model: the outer wall of the cylinder is provided with a plurality of countersunk holes, the plurality of countersunk holes are arranged along the length direction of the anti-rotation key strip, and countersunk screws connected to the anti-rotation key strip are installed inside the plurality of countersunk holes.

[0011] As a further embodiment of this utility model: the connecting structure includes a connecting flange connected to the other end of the cylinder, the inner wall of the connecting flange is equipped with two deep groove ball bearings, and a bearing retaining ring is provided between the two deep groove ball bearings. A cover is installed at the end of the connecting flange away from the cylinder, and a coupling is installed inside the cover.

[0012] As a further embodiment of this utility model: one end of the ball screw passes sequentially through the piston rod, piston head, deep groove ball bearing and bearing retaining ring, and is connected to the coupling via a flat key.

[0013] As a further embodiment of this utility model: a motor mount flange is installed at the end of the cover away from the cylinder, a servo motor is installed on the motor mount flange, and the servo motor is connected to the host computer through a connecting line.

[0014] As a further embodiment of this utility model: the sliding plate has an L-shaped structure, the sliding plate is connected to the piston head by bolts, and a support ring is installed on the outer circumferential surface of the piston head.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By using electric cylinders instead of traditional pneumatic cylinders in equipment and production line operations, stable speed control can be achieved, ensuring smooth and reliable door opening and closing actions, and precise coordination with the production line's rhythm to guarantee the overall operation rhythm. With the help of a closed-loop control system, flexible multi-cycle production can be supported, significantly improving action efficiency. The electric cylinder supports electronically controlled buffering function, effectively reducing mechanical impact, reducing operating noise, and extending equipment life.

[0016] 2. Through the coordinated action of the anti-rotation key strip on the cylinder, the upper limit groove of the piston head, and the sliding plate, when the equipment door W is opened or closed, the sliding plate and the anti-rotation key strip on the cylinder remain in contact to ensure that the piston head cannot rotate under the action of the limit groove, the sliding plate, and the anti-rotation key strip, thus ensuring the stability of the piston head during operation. In addition, the anti-rotation key strip and the sliding plate are connected by bolts. When excessive wear occurs, only the excessively worn sliding plate or anti-rotation key strip needs to be replaced. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the electric cylinder for opening doors according to this utility model; Figure 2 This is a cross-sectional schematic diagram of the electric cylinder for opening doors according to this utility model; Figure 3 This is a schematic diagram showing the connection between the piston rod and the piston head of this utility model; Figure 4 This is a schematic diagram of the piston head of this utility model; Figure 5 This is a schematic diagram showing the installation location and application scenario of the electric cylinder for opening doors according to this utility model. Figure 6 This utility model Figure 5 A cross-sectional view; In the diagram: 1. Cylinder barrel; 2. Cylinder head; 3. Connecting flange; 4. Cover; 5. Motor mount flange; 6. Servo motor; 7. Connecting cable; 8. Piston rod; 9. Piston head; 901. Limiting groove; 902. Sliding vane; 903. Bolt; 10. Nut sleeve; 11. Screw; 12. Support ring; 13. Ball screw; 14. Deep groove ball bearing; 15. Bearing retaining ring; 16. Flat key; 17. Coupling; 18. Connecting head; 19. Anti-rotation key strip; 20. Countersunk screw. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 In this embodiment of the present invention, an automated equipment door-opening electric cylinder for collaborative operation of a production line includes: Cylinder 1, with cylinder head 2 installed at one end and connecting structure installed at the other end; Specifically, the structure of cylinder 1 is not limited. In this embodiment, cylinder 1 is a rectangular structure with a through-center. Cylinder heads 2 and connecting structures adapted to the ends are installed at both ends of cylinder 1 by screws 11. This ensures connectivity and facilitates subsequent disassembly and internal maintenance.

[0020] Servo motor 6 is connected to the end of the connecting structure and to the host computer; Specifically, the servo motor 6 is mounted on the connecting structure, which provides stable support for it. The servo motor 6 also establishes a connection with the host computer through a communication interface to receive control commands and transmit the operating status. Precise angle, speed and torque control is achieved through closed-loop control. In addition, the host computer can control the opening and closing of the equipment door w according to the status of other devices in order to complete the operation of the automated equipment.

[0021] The ball screw 13 is located inside the cylinder 1, and its end is connected to the servo motor 6 through a connecting structure. A piston rod 8 is provided on the outer circumferential surface of the ball screw 13. One end of the piston rod 8 is connected to the piston head 9, and the other end of the piston rod 8 passes through the inside of the cylinder 1 and is connected to the equipment door w. Specifically, one end of the ball screw 13 is connected to the servo motor 6 via a connecting structure, and the servo motor 6 controls the forward and reverse rotation of the ball screw 13. The piston rod 8 is sleeved on the outer circumferential surface of the ball screw 13, and a piston head 9 is installed at its end. A nut sleeve 10 that is threadedly connected to the ball screw 13 is installed on the piston head 9. The piston head 9 and the nut sleeve 10 are connected by several screws 11 to ensure their synchronization and facilitate subsequent disassembly and assembly of the piston head 9 and the nut sleeve 10. At the same time, it can ensure the perpendicularity of the installation and reduce the radial stress on the ball screw 13. Furthermore, the nut sleeve 10, piston head 9, and piston rod 8 adopt a stepped radial positioning and threaded connection structure to ensure the coaxiality of the assembly of the nut sleeve 10, piston head 9, and piston rod 8 during their strokes. When the ball screw 13 is in forward and reverse motion, since the nut sleeve 10 cannot rotate, the piston rod 8 sleeved on the outer periphery of the ball screw 13 will extend or retract along the length direction of the ball screw 13, converting the rotational movement of the ball screw 13 into the linear movement of the piston rod 8, thereby completing the opening and closing of the equipment door w on the automated equipment. An anti-rotation structure is provided inside the cylinder 1. The anti-rotation structure includes a limiting groove 901 opened on the outer peripheral surface of the piston head 9 and two sliding plates 902 provided on the limiting groove 901. A slide is formed between the two sliding plates 902 for the anti-rotation key strip 19 of the inner wall of the cylinder 1 to pass through. When the piston rod 8 performs telescopic movement, the slide can move along the length direction of the anti-rotation key strip 19 and restrict the piston rod 8 from rotating.

[0022] Specifically, the limiting groove 901 consists of a first groove and a second groove that are interconnected. The first groove is located on one end face of the piston head 9, and the second groove completely penetrates both end faces of the piston head 9 along its length. The second groove is perpendicular to the first groove. The sliding vane 902 has an L-shaped structure, and the opposite sides of the two sliding vanes 902 are coated with copper powder and PTFE wear-resistant coating to increase the reliability of the structure. One end of the sliding vane 902 is located in the first groove, and the other end of the sliding vane 902 is located in the second groove. The sliding vane 902 located in the first groove is connected to the piston head 9 by bolts 903, thereby fixing the position of the sliding vane 902 in the first groove and fixing the sliding vane 902 located in the second groove. The thickness, base material, and wear-resistant coating material and thickness of the sliding vane 902 can be selected according to different loads and cylinder diameters. Furthermore, by pre-assembling the piston head 9 and the sliding vane 902 together before overall processing, the positional accuracy of the sliding vane 902 is ensured. In addition, the threaded holes on the end faces are also processed. To ensure smooth installation and operation of the sliding vane 902, a support ring 12 with a notch is installed on the outer circumferential surface of the piston head 9. Both ends of the support ring 12 are in contact with the surfaces of the two sliding vanes 902. The distance between the two sliding vanes 902 is adapted to the width of the anti-rotation key strip 19, ensuring that the piston head 9 does not wobble during movement. Since the sliding vane 902 and the anti-rotation key strip 19 are connected by bolts 903 or countersunk screws 20, in the event of excessive wear, only... The worn slide plate 902 or anti-rotation key strip 19 only needs to be replaced. In addition, the slide plate 902 and anti-rotation key strip 19 cooperate with each other and clamp each other, which can effectively prevent the piston head 9 from rotating with the ball screw 13, ensuring the radial rotation accuracy of the nut sleeve 10. In this way, the piston head 9 converts the rotational motion of the ball screw 13 into linear motion and drives the piston rod 8 to move together, thereby realizing the opening and closing of the equipment door w. Compared with plastic anti-rotation keys, it has higher strength and reliability, and is simple to assemble and operate.

[0023] By adopting an electric cylinder-driven door (W), the door achieves stable speed control, ensuring smooth and reliable opening and closing actions. This precisely coordinates with the production line's rhythm, guaranteeing overall operational efficiency. A closed-loop control system supports flexible multi-cycle production, significantly improving efficiency. The electric cylinder features electronically controlled buffering, effectively reducing mechanical impact, operating noise, and extending equipment lifespan. Furthermore, motor torque limits can be programmed to ensure production safety and protect operators. This solution eliminates reliance on external factors such as on-site air supply, offering advantages such as easy maintenance, low failure rate, low maintenance frequency, and low energy consumption, resulting in higher overall reliability and automation.

[0024] Please see Figure 2In one embodiment, preferably, the end of the piston rod 8 away from the piston head 9 extends out of the cylinder 1, and a connector 18 is installed at this end. Furthermore, the connector 18 is connected to the end of the equipment door w, so that when the piston rod 8 moves, the equipment door w will also move along with it.

[0025] Please see Figure 1-2 In one embodiment, preferably, the outer wall of the cylinder 1 is provided with a plurality of countersunk holes, which are arranged along the length direction of the anti-rotation key strip 19, and countersunk screws 20 connected to the anti-rotation key strip 19 are installed inside the plurality of countersunk holes. Furthermore, the spacing between the plurality of countersunk screws 20 is equal, and the ends of the plurality of countersunk screws 20 penetrate from the outer wall of the cylinder 1 into the interior of the cylinder 1 and are connected to the anti-rotation key strip 19.

[0026] Please see Figure 2 In one embodiment, preferably, the connection structure includes a connecting flange 3 connected to the other end of the cylinder 1. Two deep groove ball bearings 14 are installed on the inner wall of the connecting flange 3, and a bearing retaining ring 15 is provided between the two deep groove ball bearings 14. A cover 4 is installed at the end of the connecting flange 3 away from the cylinder 1, and a coupling 17 is installed inside the cover 4. Further, the connecting flange 3 is a hollow structure, and two deep groove ball bearings 14 are installed inside it. The deep groove ball bearings 14 consist of an inner shaft and an outer shaft, wherein the outer shaft is connected to the connecting flange 3, and the inner shaft is connected to the outer circumferential surface of the ball screw 13. The two ends of the bearing retaining ring 15 are respectively connected to the inner shafts of the two deep groove ball bearings 14. The coupling 17 is located inside the cover 4, wherein the coupling 17 is connected to the end of the servo motor 6. One end of the ball screw 13 passes through the piston rod 8, piston head 9, deep groove ball bearing 14 and bearing retaining ring 15 in sequence, and is connected to the coupling 17 through a flat key 16.

[0027] Please see Figure 1-2 In one embodiment, preferably, a motor mount flange 5 is installed at the end of the cover 4 away from the cylinder 1. A servo motor 6 is installed on the motor mount flange 5, and the servo motor 6 is connected to the host computer via a connecting line 7. Furthermore, the motor mount flange 5 is connected to the cover 4, and the servo motor 6 is fixed on the motor mount flange 5. The servo motor 6 is connected to the host computer via the connecting line 7. The host computer independently controls the position and speed of the piston rod 8 to meet the acceleration, deceleration, and buffer control for start and stop, and the uniform speed in the middle ensures the time rhythm.

[0028] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0029] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An electric cylinder for opening doors in automated equipment used in collaborative production lines, characterized in that, include: The cylinder barrel has a cylinder head installed at one end and a connecting structure installed at the other end. The servo motor is connected to the end of the connecting structure and to the host computer. A ball screw is installed inside the cylinder, and its end is connected to a servo motor through a connecting structure. A piston rod is provided on the outer circumferential surface of the ball screw. One end of the piston rod is connected to the piston head, and the other end of the piston rod passes through the inside of the cylinder and is connected to the equipment door. An anti-rotation structure is installed inside the cylinder. The anti-rotation structure includes a limiting groove on the outer circumferential surface of the piston head and two sliding plates on the limiting groove. A slide channel is formed between the two sliding plates for the anti-rotation key strip on the inner wall of the cylinder to pass through. When the piston rod performs telescopic movement, the slide channel can move along the length direction of the anti-rotation key strip and restrict the piston rod from rotating.

2. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 1, characterized in that, A nut sleeve is installed at the end of the piston head away from the piston rod. The nut sleeve is connected to the piston head by a screw, and the nut sleeve is threaded to the outer circumferential surface of the ball screw.

3. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 1, characterized in that, The piston rod extends out of the cylinder at the end furthest from the piston head, and a connector is installed at that end.

4. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 1, characterized in that, The outer wall of the cylinder is provided with several countersunk holes, which are arranged along the length of the anti-rotation key strip, and countersunk screws connected to the anti-rotation key strip are installed inside the countersunk holes.

5. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 1, characterized in that, The connection structure includes a connecting flange connected to the other end of the cylinder. Two deep groove ball bearings are installed on the inner wall of the connecting flange, and a bearing retaining ring is provided between the two deep groove ball bearings. A cover is installed at the end of the connecting flange away from the cylinder, and a coupling is installed inside the cover.

6. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 5, characterized in that, One end of the ball screw passes sequentially through the piston rod, piston head, deep groove ball bearing, and bearing retaining ring, and is connected to the coupling via a flat key.

7. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 6, characterized in that, A motor mount flange is installed at the end of the cover away from the cylinder. A servo motor is installed on the motor mount flange and the servo motor is connected to the host computer via a connecting cable.

8. The electric cylinder for opening doors in automated equipment for coordinated production line operations according to claim 1, characterized in that, The sliding plate has an L-shaped structure and is connected to the piston head by bolts. A support ring is installed on the outer circumferential surface of the piston head.

Images