Long-stroke pneumatic sliding table

Abstract

The utility model discloses a long-stroke pneumatic sliding table which comprises a sliding table base, an air cylinder body installed on the sliding table base and a sliding table assembly in driving connection with the air cylinder body. A sliding rail connected with the sliding table assembly in a sliding mode is arranged at the top of the sliding table base. The air cylinder body comprises a cylinder barrel provided with an inner cavity and a piston assembly arranged in the inner cavity of the cylinder barrel. The middle of the piston assembly is sleeved with at least one inner magnetic ring in the peripheral direction, and the middle of the cylinder barrel is movably sleeved with an outer magnetic ring in the peripheral direction, wherein the outer magnetic ring is magnetically coupled with the inner magnetic ring. And the outer magnetic ring is fixed with the sliding table assembly. According to the pneumatic sliding table, non-contact type transmission driving force is achieved through a magnetic coupling structure of the inner magnetic ring and the outer magnetic ring, friction is reduced so that transmission energy efficiency can be improved, the piston rod does not need to stretch out so that installation space can be saved, the carrying stroke of the pneumatic sliding table can be expanded, and the requirement for long-distance carrying is met.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial automation equipment components, and in particular to a long-stroke pneumatic slide. Background Technology

[0002] In the field of industrial automation, pneumatic slides are key components for guiding the movement of products and mechanisms, used to perform reciprocating linear motion in a given direction to meet needs such as material handling. However, currently available pneumatic slides have limited travel range to meet the demands of long-stroke material handling and occupy a large installation space, restricting their application in space-constrained scenarios. Utility Model Content

[0003] The purpose of this invention is to provide a long-stroke pneumatic slide table that achieves contactless transmission of driving force by setting a magnetic coupling structure between an inner magnetic ring and an outer magnetic ring, reducing friction to improve transmission efficiency, eliminating the need for a piston rod extension to save installation space, and extending the transport stroke of the pneumatic slide table to meet the needs of long-distance transport.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A long-stroke pneumatic slide table includes a slide table base, a cylinder body mounted on the slide table base, and a slide table assembly drivenly connected to the cylinder body; the top of the slide table base is provided with a slide rail slidably connected to the slide table assembly; the cylinder body includes a cylinder barrel with an inner cavity, and a piston assembly installed in the inner cavity of the cylinder barrel; at least one inner magnetic ring is sleeved on the outer periphery of the middle part of the piston assembly, and an outer magnetic ring magnetically coupled to the inner magnetic ring is movably sleeved on the outer periphery of the middle part of the cylinder barrel; the outer magnetic ring is fixed to the slide table assembly.

[0006] Preferably, the slide assembly includes a slider, an end cap at each end of the slider, and a plurality of balls disposed between the slider and the slide rail.

[0007] Preferably, a first ball bearing channel is formed in the side wall of the slider, and a second ball bearing channel parallel to the first ball bearing channel is formed between the side wall of the slider and the slide rail; a third ball bearing channel is formed in each end cover, which is connected to the first ball bearing channel and the second ball bearing channel respectively; the first ball bearing channel, the second ball bearing channel, and the third ball bearing channel are connected to form a circulating ball bearing channel, and a number of balls are installed in the circulating ball bearing channel.

[0008] Preferably, the slide base includes a base and a support seat at each end of the base; the two ends of the cylinder are respectively connected to a support seat; a side plate is provided on one side of the slide base along its length; a connecting air passage is provided on the side plate along its length; each support seat is provided with a first air intake passage and a second air intake passage communicating with the outside, as well as a branch air passage provided between the cylinder cavity and the connecting air passage; the first air intake passage communicates with one end of the cylinder cavity; the connecting air passage is used to communicate with the second air intake passage on one of the support seats and with the branch air passage on the other support seat.

[0009] Preferably, the slide rail is located at the top of the base along the length of the base; each support is provided with a travel limiter.

[0010] Preferably, the slide rail and the base are integrally formed and both are made of high-rigidity metal material.

[0011] Preferably, each end of the side plate is provided with a sensor switch, and a sensor magnet matching the sensor switch is provided on one side of the slide assembly corresponding to the side plate.

[0012] By adopting the above solution, the beneficial effects of this utility model are:

[0013] This invention provides a long-stroke pneumatic slide table. By employing a magnetic coupling structure between an inner and outer magnetic ring, it achieves contactless transmission of driving force, reducing friction and improving transmission efficiency. Furthermore, it eliminates the need for an extended piston rod, saving installation space and extending the pneumatic slide table's transport stroke to meet the needs of long-distance transport. In a preferred embodiment, by embedding several ball bearings within a circulating ball bearing channel, not only is high-precision operation of the pneumatic slide table ensured, but its rigidity is also significantly improved, enabling it to withstand greater loads and maintain a stable motion trajectory. Simultaneously, by providing a first air inlet, a second air inlet, a connecting air path, and branch air paths, it is possible to choose between separate piping at both ends of the pneumatic slide table or centralized piping at one end, offering multiple installation options for scenarios with limited installation space. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the end face structure of this utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0017] Figure 4 for Figure 2 Schematic diagram of the BB cross section;

[0018] Figure 5 for Figure 2 Schematic diagram of the CC section;

[0019] The following are explanations of the labels in the attached diagram:

[0020] 1—Slide base, 2—Cylinder body,

[0021] 3—Slide table assembly, 4—Slide rail,

[0022] 5—Inner magnetic ring, 6—Outer magnetic ring

[0023] 7—Side panel, 8—Connecting air passage,

[0024] 9—First air intake, 10—Second air intake.

[0025] 101—Branch air path, 102—Stroke limiter,

[0026] 11—Base, 12—Support base

[0027] 21—Cylinder barrel, 22—Piston assembly,

[0028] 31—Slider, 32—End cap,

[0029] 33—Ball bearing. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Reference Figures 1 to 5 As shown, this utility model provides a long-stroke pneumatic slide table, including a slide table base 1, a cylinder body 2 mounted on the slide table base 1, and a slide table assembly 3 drivenly connected to the cylinder body 2; the top of the slide table base 1 is provided with a slide rail 4 slidably connected to the slide table assembly 3; the cylinder body 2 includes a cylinder barrel 21 with an inner cavity, and a piston assembly 22 installed in the inner cavity of the cylinder barrel 21; at least one inner magnetic ring 5 is sleeved on the outer circumference of the middle part of the piston assembly 22, and an outer magnetic ring 6 magnetically coupled to the inner magnetic ring 5 is movably sleeved on the outer circumference of the middle part of the cylinder barrel 21; the outer magnetic ring 6 is fixed to the slide table assembly 3. Further, the piston assembly 22 includes a piston and a piston rod connected to the piston. Three inner magnetic rings 5 ​​are provided, and the three inner magnetic rings 5 ​​are spaced apart on the piston rod. Correspondingly, three outer magnetic rings 6 are also provided, and each outer magnetic ring 6 corresponds to one inner magnetic ring 5. Both the inner magnetic ring 5 and the outer magnetic ring 6 are high-strength magnetic rings. The inner magnetic ring 5 couples with the outer magnetic ring 6 to drive the slide assembly 3 to move.

[0034] The slide assembly 3 includes a slider 31, an end cap 32 at each end of the slider 31, and a plurality of balls 33 disposed between the slider 31 and the slide rail 4. Specifically, the balls 33 are steel balls. The top of the slider 31 is used to mount the workpiece to be transported. In addition, the slide assembly 3 also includes a sliding connector disposed between the slider 31 and the cylinder 21. The sliding connector is sleeved on the outer circumference of the cylinder 21, and the outer magnetic ring 6 is fixed to the sliding connector.

[0035] The slider 31 has a first ball channel in its side wall, and a second ball channel parallel to the first ball channel is formed between the side wall of the slider 31 and the slide rail 4; each end cover 32 has a third ball channel that is connected to the first ball channel and the second ball channel respectively; the first ball channel, the second ball channel and the third ball channel are connected to form a circulating ball channel, and a number of balls 33 are movably installed in the circulating ball channel.

[0036] Furthermore, two slide rails 4 are configured, and the two opposite inner sides of the slider 31 are slidably connected to one slide rail 4 respectively. Therefore, a circulating ball channel is formed between each inner side of the slider 31 and one slide rail 4. Simultaneously, a limiting block is detachably connected to the inner wall of the end cover 32. A third ball channel is formed between the inner wall of the end cover 32 and the limiting block, and the third ball channel has two openings on the inner wall of the end cover 32, communicating with the first ball channel and the second ball channel respectively. The first ball channel and the second ball channel are arranged side by side, so that the first ball channel, the second ball channel, and the third ball channels at both ends are connected to form a racetrack-shaped circulating ball channel. When the slide assembly 3 slides on the slide rail 4, several balls 33 circulate within the circulating ball channel. The circulating ball 33 rolling between the slide assembly 3 and the slide rail 4 results in a longer service life.

[0037] The slide base 1 includes a base 11 and a support base 12 at each end of the base 11; the two ends of the cylinder 21 are respectively connected to a support base 12; a side plate 7 is provided on one side along the length direction of the slide base 1; a connecting air passage 8 is provided along the length direction of the side plate 7; each support base 12 is provided with a first air intake passage 9 and a second air intake passage 10 communicating with the outside, and a branch air passage 101 provided between the inner cavity of the cylinder 21 and the connecting air passage 8; the first air intake passage 9 communicates with one end of the inner cavity of the cylinder 21; the connecting air passage 8 is used to communicate with the second air intake passage 10 on one of the support bases 12, and with the branch air passage 101 on the other support base 12.

[0038] When using centralized piping at one end of a pneumatic slide, please continue to refer to... Figure 4 , 5 This diagram illustrates the single-end piping on the right side of the pneumatic slide. Air pipes are connected to the first air inlet 9 and the second air inlet 10 on the right support 12. The first air inlet 9 provides air pressure to the right end of the piston assembly 22. The air inlet path to the left end of the piston assembly 22 is: the second air inlet 10 on the right support 12—connecting air inlet 8—branch air inlet 101 on the left support 12, thus providing air pressure to the left end of the piston assembly 22. When single-end piping is installed on the left side of the pneumatic slide, the side plate 7 is moved to the left, so that the right end of the connecting air inlet 8 connects to the branch air inlet 101 on the right support 12, and the left end of the connecting air inlet 8 connects to the second air inlet 10 on the left support 12.

[0039] When separating the piping at both ends of the pneumatic slide, please continue to refer to... Figure 5 Both first air intakes 9 on the two support seats 12 are connected to external air pipes, thereby alternately supplying air pressure to both ends of the piston assembly 22.

[0040] The slide rail 4 is located on the top of the base 11 along the length of the base 11; each support 12 is provided with a travel limiter 102. The travel limiter 102 is provided at the end of the travel, and rubber limiter, metal limiter or hydraulic buffer limiter can be selected according to the accuracy requirements and buffering requirements of the travel.

[0041] Each end of the side plate 7 is provided with a sensor switch, and the side of the slide assembly 3 corresponding to the side plate 7 is provided with a sensor magnet that matches the sensor switch. By installing a sensor switch at the end of the stroke, when the slide assembly 3 slides to either end of the stroke, the sensor magnet approaches the sensor switch at that end to send a signal to the PLC. The PLC controls the slide assembly 3 to stay at this end of the stroke or move in the opposite direction to another end of the stroke as needed.

[0042] The long-stroke pneumatic slide provided by this utility model can achieve the following effects:

[0043] 1) Long stroke and space-saving installation: The drive force is transmitted without contact through the magnetic coupling of the inner magnetic ring 5 and the outer magnetic ring 6, eliminating the need for a piston rod extension and saving installation space. At the same time, the transport stroke of the pneumatic slide can be extended to meet the needs of long-distance transport. Compared with traditional cylinders, it has a longer stroke and more flexible installation.

[0044] 2) Low energy consumption and high transmission efficiency: The non-contact transmission of driving force structure design reduces mechanical friction, lowers energy consumption and transmission loss, and improves overall energy efficiency, making the pneumatic slide table more energy-efficient and efficient during operation.

[0045] 3) Diverse installation options: It can realize separate piping at both ends or centralized piping at one end, providing a variety of installation options for scenarios with limited installation space.

[0046] 4) High rigidity and high precision: The slide rail 4 and the base 11 are integrally formed and both are made of high rigidity metal material. Combined with the guide of the slide rail 4 and the rolling design of the circulating ball 33, it not only ensures the high precision of the pneumatic slide table, but also significantly improves the rigidity of the pneumatic slide table, enabling it to withstand greater loads and maintain a stable motion trajectory, effectively improving the service life of the pneumatic slide table and reducing maintenance costs.

[0047] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the utility model and are not intended to limit the implementation of this utility model. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A long-stroke pneumatic slide, characterized in that, The system includes a slide base, a cylinder body mounted on the slide base, and a slide assembly drivenly connected to the cylinder body; the top of the slide base is provided with a slide rail slidably connected to the slide assembly; the cylinder body includes a cylinder barrel with an inner cavity, and a piston assembly installed in the inner cavity of the cylinder barrel; at least one inner magnetic ring is sleeved on the outer circumference of the middle part of the piston assembly, and an outer magnetic ring magnetically coupled to the inner magnetic ring is movably sleeved on the outer circumference of the middle part of the cylinder barrel; the outer magnetic ring is fixed to the slide assembly. The slide base includes a base and a support seat at each end of the base; the two ends of the cylinder are respectively connected to a support seat; a side plate is provided on one side along the length direction of the slide base; a connecting air passage is opened in the length direction of the side plate; each support seat has a first air intake passage and a second air intake passage communicating with the outside, and a branch air passage provided between the cylinder cavity and the connecting air passage; the first air intake passage communicates with one end of the cylinder cavity; the connecting air passage is used to communicate with the second air intake passage on one of the support seats and with the branch air passage on the other support seat.

2. The long-stroke pneumatic slide according to claim 1, characterized in that, The slide assembly includes a slider, an end cap at each end of the slider, and a plurality of balls disposed between the slider and the slide rail.

3. The long-stroke pneumatic slide according to claim 2, characterized in that, The slider has a first ball channel in its side wall, and a second ball channel parallel to the first ball channel is formed between the side wall of the slider and the slide rail; each end cover has a third ball channel that is connected to the first ball channel and the second ball channel respectively; the first ball channel, the second ball channel and the third ball channel are connected to form a circulating ball channel, and a number of balls are installed in the circulating ball channel.

4. The long-stroke pneumatic slide according to claim 1, characterized in that, The slide rail is located on the top of the base along the length of the base; each support is provided with a travel limiter.

5. The long-stroke pneumatic slide according to claim 4, characterized in that, The slide rail and the base are integrally formed and both are made of high-rigidity metal.

6. The long-stroke pneumatic slide according to claim 1, characterized in that, Each end of the side plate is provided with a sensor switch, and a sensor magnet matching the sensor switch is provided on one side of the slide assembly corresponding to the side plate.

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