An ultra-thin vacuum cylinder

Abstract

The utility model provides an ultra-thin vacuum cylinder, belonging to the technical field of vacuum cylinders. The utility model includes a cylinder body, a sliding cavity, a ventilation cavity and an installation groove are arranged inside the cylinder body, a magnetic induction vacuum shaft and a position sensor are arranged in the installation groove respectively, the magnetic induction vacuum shaft is slidably connected with the installation groove, a vacuum interface is connected through the upper end of the magnetic induction vacuum shaft, a vacuum suction cup is installed and connected at the lower end of the magnetic induction vacuum shaft, an air pipe joint is arranged at the upper end of the sliding cavity and the ventilation cavity, a piston rod is sealed and slidably connected inside the sliding cavity, and a sealing guide positioning shaft is fixedly arranged at the bottom end of the sliding cavity; through the arrangement of the magnetic induction vacuum shaft and the position sensor, the position of the piston rod can be accurately judged, so that the device can be better applied to the grabbing and handling of small products with small pitch in an array; the height and position of the drive block can also be adjusted by turning the screw to adapt to the environment with narrow space.

Description

Technical Field

[0001] The utility model relates to the field of vacuum cylinders, in particular to an ultra-thin vacuum cylinder. Background Art

[0002] A cylinder is a common hydraulic or pneumatic actuator used to convert compressed air or liquid energy into mechanical motion energy. It consists of a container and a piston. When the medium (such as gas or liquid) inside the cylinder exerts pressure, the piston moves inside the container, resulting in linear motion. Cylinders are widely used in industrial and mechanical equipment for various tasks such as pushing, pulling, clamping, and clamping. They play a key role in many devices and systems, including mechanical automation, fluid dynamics, automotive industry, aerospace, and manufacturing industries.

[0003] Currently, in the automation industry, for products with small spacing between parts, it is difficult for existing cylinders to achieve accurate grasping and transportation of products. In an environment with small spacing between parts, it is often difficult for sensors to accurately detect and locate the target objects, resulting in errors in the grasping and transportation process. In addition, when performing automated operations in areas with limited space, traditional cylinder designs may be limited by volume and unable to meet transportation requirements.

[0004] How to invent an ultra-thin vacuum cylinder to improve these problems has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an ultra-thin vacuum cylinder, aiming to improve the problems mentioned in the above background.

[0006] The utility model is achieved in this way:

[0007] The utility model provides an ultra-thin vacuum cylinder, comprising a cylinder body, wherein a sliding cavity, a ventilation cavity and a mounting groove are arranged inside the cylinder body, a magnetic induction vacuum shaft and a position sensor are arranged in the mounting groove respectively, the magnetic induction vacuum shaft is slidably connected with the mounting groove, a vacuum interface is connected through the upper end of the magnetic induction vacuum shaft, a vacuum suction cup is installed and connected at the lower end of the magnetic induction vacuum shaft, an air pipe joint is arranged at the upper end of the sliding cavity and the ventilation cavity, a piston rod is sealingly and slidably connected inside the sliding cavity, a sealing guide positioning shaft is fixedly arranged at the bottom end of the sliding cavity, a bidirectional built-in buffer device is arranged at the upper end of the piston rod and the top end of the sealing guide positioning shaft, the end of the piston rod extends to the outside of the cylinder body, two bidirectional buffer guide joints are symmetrically arranged on the end of the piston rod located outside the cylinder body, and a driving block is slidably arranged between the bidirectional buffer guide joint and the end of the magnetic induction vacuum shaft.

[0008] Preferably, there are two trachea connectors, the trachea connector located on the outside is connected to the top of the ventilation cavity, and the trachea connector located on the inside is connected to the top of the sliding cavity.

[0009] Preferably, a slide groove matching the bidirectional buffer guide joint is provided on the sealing guide positioning shaft.

[0010] Preferably, the bottom side wall of the sliding cavity is connected to the ventilation cavity.

[0011] Preferably, a fastening hole is provided on the side wall of the driving block.

[0012] Preferably, the position sensor and the magnetic induction vacuum shaft are arranged side by side, and the position sensor and the magnetic induction vacuum shaft are electrically connected.

[0013] The beneficial effects of the utility model are:

[0014] Adopting the principle of magnetic induction, the induction magnetization phenomenon of soft magnetic materials in the magnetic field of external permanent magnets is used to realize non-contact motion transmission. At the same time, the position sensor is used to monitor the position of the magnetic induction vacuum axis. This design can reduce mechanical wear, improve the accuracy and reliability of the system, and can be better applied to the grabbing and handling of small products with small array spacing. It has high precision and saves costs. In order to adapt to different application scenarios, especially in narrow space environments, the drive block is designed with side fastening holes, which allows the height and position of the drive block to be adjusted by fixing devices such as screws, so that the ultra-thin vacuum cylinder can flexibly adapt to the changing industrial application requirements while ensuring the accuracy and stability of the operation.

[0015] The sealed guide positioning shaft provides precise guidance for the piston rod, ensuring accuracy and repeatability during the sliding process, while reducing friction and wear during operation and extending the service life of the equipment. Combining the above design features, this ultra-thin vacuum cylinder can provide high-efficiency, high-precision and highly adaptable motion control solutions, which are particularly suitable for applications that require fine operation and limited space, such as automated assembly, precision machinery operation and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1This is a schematic diagram of the overall structure of an ultra-thin vacuum cylinder provided by the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an ultra-thin vacuum cylinder provided by the embodiment of the utility model when it is extended;

[0019] Figure 3 This is a schematic diagram of the structure of an ultra-thin vacuum cylinder drive block after position adjustment provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of an ultra-thin vacuum cylinder body provided by the embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of a front cross-sectional structure of an ultra-thin vacuum cylinder provided by an embodiment of the utility model.

[0022] In the figure: 1. Cylinder body; 2. Air pipe joint; 3. Vacuum interface; 4. Magnetic induction vacuum shaft; 5. Position sensor; 6. Drive block; 7. Bidirectional buffer guide joint; 8. Sealing guide positioning shaft; 9. Piston rod; 10. Vacuum suction cup; 101. Sliding cavity; 102. Ventilation cavity; 601. Fastening hole; 901. Bidirectional built-in buffer device. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0024] Reference Figure 1-Figure 4An ultra-thin vacuum cylinder comprises a cylinder body 1, wherein a sliding cavity 101, a ventilation cavity 102 and a mounting groove are arranged inside the cylinder body 1, wherein a magnetic induction vacuum shaft 4 and a position sensor 5 are arranged in the mounting groove respectively, wherein the magnetic induction vacuum shaft 4 is slidably connected to the mounting groove, wherein a vacuum interface 3 is connected through the upper end of the magnetic induction vacuum shaft 4, wherein a vacuum suction cup 10 is installed and connected at the lower end of the magnetic induction vacuum shaft 4, wherein the vacuum interface 3 is used to connect to an external vacuum system to provide a required vacuum environment for the vacuum suction cup 10, wherein an air pipe joint 2 is arranged at the upper end of the sliding cavity 101 and the ventilation cavity 102, wherein the interior of the sliding cavity 101 A piston rod 9 is sealed and slidably connected, a sealing guide positioning shaft 8 is fixedly provided at the bottom end of the sliding chamber 101, a bidirectional built-in buffer device 901 is provided at the upper end of the piston rod 9 and the top end of the sealing guide positioning shaft 8, the end of the piston rod 9 extends to the outside of the cylinder body 1, and two bidirectional buffer guide joints 7 are symmetrically provided on the end of the piston rod 9 located outside the cylinder body 1, and a driving block 6 is slidably provided at the end of the bidirectional buffer guide joint 7 and the end of the magnetic induction vacuum shaft 4, and the piston rod 9 is sealed and slidable inside the sliding chamber 101, converting the gas pressure into linear motion, driving the driving block 6 and the magnetic induction vacuum shaft 4 to move;

[0025] It should be noted that: there are two tracheal joints 2, the tracheal joint 2 located on the outside is connected to the top of the ventilation cavity 102, and is used to control the contraction of the piston rod 9, and the tracheal joint 2 located on the inside is connected to the top of the sliding cavity 101, and is used to control the extension of the piston rod 9;

[0026] Reference Figure 3-Figure 5 The sealing guide positioning shaft 8 is provided with a slide groove matching the bidirectional buffer guide joint 7 to provide guidance and positioning for the piston rod 9 to ensure its smooth operation. The bottom end side wall of the sliding cavity 101 is connected with the ventilation cavity 102 to facilitate the adjustment and control of the inflow and outflow of the gas in the cylinder body 1;

[0027] It should be noted that: a fastening hole 601 is provided on the side wall of the driving block 6, and the position of the driving block 6 can be adjusted through the fastening hole 601, so that it can be applied to those areas with relatively narrow operating space. The position sensor 5 and the magnetic induction vacuum shaft 4 are arranged side by side, and the position sensor 5 and the magnetic induction vacuum shaft 4 are electrically connected. The position sensor 5 can sense and monitor the position of the magnetic induction vacuum shaft 4 to achieve precise control;

[0028] The core principle of the magnetic induction vacuum shaft 4 is to use the phenomenon that soft magnetic materials are induced magnetized and generate attraction in the magnetic field of a permanent magnet to achieve motion transmission. The position sensor 5, such as the linear variable differential transformer (LVDT), measures the position of an object by detecting changes in the magnetic field characteristics. In the LVDT, three coils are wound around a hollow tube, one as a primary coil and the other two as secondary coils. When the ferromagnetic core or armature moves in the hollow tube, it changes the induced electromotive force (EMF) in the secondary coil, so that the relative position of the armature and its connected object can be determined. This type of sensor works based on the Faraday electromagnetic induction principle and can convert the position of an object into a usable output signal. By setting the magnetic induction vacuum shaft 4 close to the position sensor 5, detection can be performed without contacting the object, ensuring accurate position monitoring and motion control.

[0029] The working principle of this ultra-thin vacuum cylinder is as follows: the sliding chamber 101 and the ventilation chamber 102 inside the cylinder body 1 are connected to the external gas source through the air pipe joint 2. When the gas enters the sliding chamber 101, it forms pressure in the chamber. This pressure will act evenly on the piston surface. According to the different areas of force action, a certain driving force will be generated. Since the piston rod 9 is fixedly connected to the piston, this driving force causes the piston rod 9 to extend outward along the cylinder axis. On the contrary, when the gas is introduced into the ventilation chamber 102 from the other end, the other side of the piston is subjected to pressure, which will cause the piston rod 9 to move in the opposite direction, that is, to shrink back. In this way, two-way control of the piston rod 9 can be achieved. The internal seal of the piston rod 9 ensures that the air on both sides of the cylinder will not circulate with each other, so that the pressure on each side can be effectively used to push the piston rod 9, and the sliding mechanism ensures the stability and smoothness of the piston rod 9 during movement.

[0030] The movement of the piston rod 9 is transmitted to the driving block 6 through the two-way buffer guide joint 7, thereby driving the magnetic induction vacuum shaft 4 to slide along the mounting groove. The position of the driving block 6 can also be adjusted through the fastening hole 601. The fastening hole 601 can accommodate screws or other fastening devices. By tightening or loosening these fixing devices, the position of the driving block 6 can be adjusted forward and backward on the magnetic induction vacuum shaft 4. This adjustment affects the relative position and distance between the magnetic induction vacuum shaft 4 and the operation target, thereby achieving control of the operation accuracy. When working in a narrow space, being able to adjust the size and position of the device according to the size and shape of the space is the key to avoiding collisions and ensuring smooth operation. In this way, even when the space is very limited, the device can work effectively and complete the required operation tasks;

[0031] The core of the magnetic induction vacuum shaft 4 is a soft magnetic material, which is induced to magnetize in the magnetic field of the external permanent magnet to generate attraction, thereby realizing motion transmission without physical contact. This design concept reduces mechanical wear and improves the durability and reliability of the system; the position sensor 5, such as a linear variable differential transformer (LVDT), is a key component used to monitor the position of the magnetic induction vacuum shaft 4. By detecting the change of the induced electromotive force in the secondary coil when the ferromagnetic core moves in the hollow tube, the position sensor 5 can accurately measure the position of the magnetic induction vacuum shaft 4. This monitoring mechanism is based on the Faraday electromagnetic induction principle and can convert the position information of the object into an electrical signal to achieve precise control of the magnetic induction vacuum shaft 4. It can be better applied to the grabbing and handling of small products with small pitch in the array, with high precision and cost saving;

[0032] The vacuum interface 3 is connected to an external vacuum system to provide the required vacuum environment for the vacuum suction cup 10. When the magnetic induction vacuum shaft 4 moves to a specific position, the vacuum suction cup 10 can accurately align with and absorb the target object. After completing the corresponding handling or operation task, the vacuum suction cup 10 can release the object by adjusting the pressure of the vacuum system to complete the entire operation cycle.

[0033] Overall, this ultra-thin vacuum cylinder achieves efficient, precise and flexible motion control by combining pneumatic and magnetic forces. Its design features include the ability to operate precisely in narrow spaces, minimize wear caused by physical contact, and ensure operation accuracy through advanced position monitoring technology. This design is particularly suitable for automation and robotic arm applications that require high precision and high reliability.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0036] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ultra-thin vacuum cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) is provided with a sliding chamber (101), a ventilation chamber (102) and a mounting groove inside, and a magnetic induction vacuum shaft (4) and a position sensor (5) are respectively provided inside the mounting groove, the magnetic induction vacuum shaft (4) is slidably connected to the mounting groove, the upper end of the magnetic induction vacuum shaft (4) is connected through a vacuum interface (3), the lower end of the magnetic induction vacuum shaft (4) is connected to a vacuum suction cup (10), the upper ends of the sliding chamber (101) and the ventilation chamber (102) are provided with an air pipe joint (2), and the interior of the sliding chamber (101) is provided with a vacuum port (3). A piston rod (9) is sealed and slidably connected, a sealing guide positioning shaft (8) is fixedly arranged at the bottom end of the sliding cavity (101), a bidirectional built-in buffer device (901) is arranged at the upper end of the piston rod (9) and the top end of the sealing guide positioning shaft (8), the end of the piston rod (9) extends to the outside of the cylinder body (1), and two bidirectional buffer guide joints (7) are symmetrically arranged on the end of the piston rod (9) located outside the cylinder body (1), and a driving block (6) is slidably arranged between the bidirectional buffer guide joint (7) and the end of the magnetic induction vacuum shaft (4).

2. An ultra-thin vacuum cylinder according to claim 1, characterized in that: There are two trachea connectors (2), the trachea connector (2) located on the outside is connected to the top end of the ventilation cavity (102), and the trachea connector (2) located on the inside is connected to the top end of the sliding cavity (101).

3. The ultra-thin vacuum cylinder according to claim 1, characterized in that: The sealing guide positioning shaft (8) is provided with a slide groove matching the bidirectional buffer guide joint (7).

4. The ultra-thin vacuum cylinder according to claim 1, characterized in that: The bottom end side wall of the sliding cavity (101) is connected to the ventilation cavity (102).

5. The ultra-thin vacuum cylinder according to claim 1, characterized in that: A fastening hole (601) is provided on the side wall of the driving block (6).

6. The ultra-thin vacuum cylinder according to claim 1, characterized in that: The position sensor (5) and the magnetic force induction vacuum shaft (4) are arranged side by side, and the position sensor (5) and the magnetic force induction vacuum shaft (4) are electrically connected.

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