Multi-station rotary clamping cylinder

Abstract

The utility model discloses a multi-station rotary clamping cylinder, which belongs to the technical field of clamping cylinders, and comprises a cylinder body, two guide channels are arranged in the cylinder body, rear end covers and guide sleeves are detachably connected in the two guide channels, the two rear end covers respectively correspond to the two guide sleeves, guide grooves are arranged on the circumferential surfaces of the two guide sleeves, and the guide grooves are matched with the guide channels. Piston rods are movably inserted into the two guide channels and movably penetrate through the two guide sleeves correspondingly, nail holes are formed in the circumferential surfaces of the two piston rods correspondingly, pins are rotationally connected into the two nail holes correspondingly, the two pins are slidably connected into the two guide grooves correspondingly, and pistons are fixedly connected to one ends of the two piston rods correspondingly; the two pistons are connected into the two guide channels in a sliding mode and located between the two rear end covers and the two guide sleeves. The whole rotary clamping cylinder can simultaneously push the two piston rods to rotate and stretch out and draw back, multi-station clamping of workpieces is achieved, the structure is simple and compact, the occupied space is small, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping cylinders, and more specifically, to a multi-station rotary clamping cylinder. Background Art

[0002] A rotary cylinder is a type of tooling fixture component and belongs to a category of clamping cylinders. It is mainly used on the rotary cylinder surface of tooling fixtures for machining with a relatively high degree of automation in mechanical processing or electronic product processing, mainly playing a role in clamping.

[0003] Currently, a rotary clamping cylinder mainly consists of a cylinder block, a piston, a piston rod, a guide sleeve, a pressing plate, etc. These components work together to enable the rotary clamping cylinder to perform rotary and clamping actions, and are applicable to various industrial application scenarios such as printing, semiconductor processing, automation control, and robotics. However, most of the existing rotary clamping cylinders usually use a single station to clamp workpieces. When clamping workpieces that require multiple stations, multiple rotary clamping cylinders are needed. Increasing the number of rotary clamping cylinders not only takes up a large amount of space in the structure but also has a high cost. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the present utility model is to provide a multi-station rotary clamping cylinder, aiming to solve the problem that most of the existing rotary clamping cylinders usually use a single station to clamp workpieces. When clamping workpieces that require multiple stations, multiple rotary clamping cylinders are needed. Increasing the number of rotary clamping cylinders not only takes up a large amount of space in the structure but also has a high cost.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the present utility model adopts the following technical solutions:

[0008] A multi-station rotary clamping cylinder includes a cylinder block. Two guiding channels are opened in the cylinder block. A rear end cover and a guiding sleeve are detachably connected in each of the two guiding channels, and the two rear end covers correspond to the two guiding sleeves respectively. Guiding grooves are opened on the circumferential surfaces of the two guiding sleeves. Piston rods are movably inserted into the two guiding channels, and the two piston rods respectively pass through the two guiding sleeves movably. Pin holes are opened on the circumferential surfaces of the two piston rods. Pin shafts are rotatably connected in the two pin holes, and the two pin shafts are respectively slidably connected in the two guiding grooves. One ends of the two piston rods are fixedly connected with pistons respectively, and the two pistons are respectively slidably connected in the two guiding channels between the two rear end covers and the two guiding sleeves. The other ends of the two piston rods are detachably connected with pressing plates respectively, and the two pressing plates are located on one side of the cylinder block. Two air ports are opened at one side end of the cylinder block, and the two air ports communicate with one guiding channel. Two air holes are opened in the cylinder block, and the two air holes communicate with the two guiding channels respectively and correspond to the two air ports respectively.

[0009] As a preferred solution of the present utility model, a first snap ring and a second snap ring are detachably connected in each of the two guiding channels, and the two first snap rings and the two second snap rings correspond to the two rear end covers and the two guiding sleeves respectively.

[0010] As a preferred solution of the present utility model, two positioning screws are threadedly connected to the cylinder block, and the two positioning screws respectively penetrate into the two guiding channels and correspond to the two guiding sleeves.

[0011] As a preferred solution of the present utility model, sealing rings are fixedly connected in the two guiding sleeves respectively, and the two piston rods respectively pass through the two sealing rings movably.

[0012] As a preferred solution of the present utility model, a plurality of mounting holes are opened on the outer surface of the cylinder block.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) In this solution, the two air ports are connected to an external air pipe. Through the two air holes, the two guiding channels can intake and exhaust air simultaneously. The compressed gas pushes the two pistons to slide in the two guiding channels respectively. The two pistons drive the two piston rods to expand and contract. The two piston rods rotate through the two pin shafts and the two guiding grooves, so that the two pressing plates rotate and clamp the workpiece; the whole rotary clamping cylinder can simultaneously push the two piston rods to rotate and expand and contract, realizing multi-station clamping of the workpiece. The structure is simple and compact, occupies a small space, and has a low cost.

[0016] (2) In this solution, mounting holes are provided on multiple surfaces of the cylinder block. The multiple mounting holes cooperate with bolts to enable multi-faceted mounting of the cylinder block, adapting to different working conditions. It can be directly mounted at different mounting positions, which is convenient for installation and can flexibly adapt to various usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present utility model;

[0018] Figure 2 is the perspective view of the present utility model;

[0019] Figure 3 is the sectional view of the present utility model;

[0020] Figure 4 is the exploded view of the present utility model.

[0021] Description of the reference numerals in the drawings:

[0022] 1. Cylinder block; 2. Guide channel; 3. Rear end cover; 4. Guide sleeve; 5. Guide groove; 6. Piston rod; 7. Nail hole; 8. Pin; 9. Piston; 10. Pressure plate; 11. Air port; 12. Air hole; 13. First circlip; 14. Second circlip; 15. Positioning screw; 16. Sealing ring; 17. Mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-4 , a multi-station rotary clamping cylinder, comprising a cylinder block 1. Two guiding channels 2 are provided in the cylinder block 1. A rear end cover 3 and a guiding sleeve 4 are detachably connected in each of the two guiding channels 2, and the two rear end covers 3 respectively correspond to the two guiding sleeves 4. Guiding grooves 5 are provided on the circumferential surfaces of the two guiding sleeves 4. Piston rods 6 are movably inserted into the two guiding channels 2, and the two piston rods 6 respectively pass through the two guiding sleeves 4 movably. Pin holes 7 are provided on the circumferential surfaces of the two piston rods 6. Pin shafts 8 are rotatably connected in the two pin holes 7, and the two pin shafts 8 are respectively slidably connected in the two guiding grooves 5. One ends of the two piston rods 6 are fixedly connected with pistons 9, and the two pistons 9 are respectively slidably connected in the two guiding channels 2 between the two rear end covers 3 and the two guiding sleeves 4. The other ends of the two piston rods 6 are detachably connected with pressing plates 10, and the two pressing plates 10 are located on one side of the cylinder block 1. Two air ports 11 are provided at one side end of the cylinder block 1, and the two air ports 11 communicate with one guiding channel 2. Two air holes 12 are provided in the cylinder block 1, and the two air holes 12 communicate with the two guiding channels 2 respectively and correspond to the two air ports 11.

[0028] In this embodiment, the two rear end covers 3 and the two guide sleeves 4 are respectively installed in the two guide channels 2, and the two air ports 11 are respectively connected to the air pipes. When the workpiece is rotated and clamped, air is taken in through the air pipe connected to the air port 11 at the rear end, and the gas enters one guide channel 2, and then enters the other guide channel 2 through the air hole 12 at the rear end. After the air is taken in at the rear of the two guide channels 2, the two pistons 9 are pushed to slide in the two guide channels 2. The two pistons 9 drive the two piston rods 6 to move, and the two piston rods 6 extend outward from the guide channel 2 through the two guide sleeves 4. During the extension process, the two piston rods 6 drive the two pins 8 to move. The two pins 8 slide in the two guide grooves 5, so that the two piston rods 6 rotate when extending, and the two piston rods 6 simultaneously drive the two pressure plates 10 to move and rotate, and the workpiece is clamped in multiple positions through the two pressure plates 10. When it is necessary to cancel the clamping of the workpiece, air is allowed to enter the two guide channels 2 through the air port 11 and the air hole 12 at the front end, thereby pushing the two pistons 9 to reset, and the two pistons 9 drive the two piston rods 6 and the two pressure plates 10 to reset, thereby canceling the clamping of the workpiece; wherein, the two pins 8 are rotatably connected to the two piston rods 6 through the two nail holes 7, so that the two pins 8 can slide smoothly in the two guide grooves 5.

[0029] Specifically, the first clip spring 13 and the second clip spring 14 are detachably connected in the two guide channels 2, and the two first clip springs 13 and the two second clip springs 14 correspond to the two rear end covers 3 and the two guide sleeves 4 respectively.

[0030] In this embodiment, the two first retaining springs 13 and the two second retaining springs 14 respectively restrict the two rear end covers 3 and the two guide sleeves 4 so that the two rear end covers 3 and the two guide sleeves 4 are respectively stabilized in the two guide channels 2 .

[0031] Specifically, two positioning screws 15 are threadedly connected to the cylinder body 1 , and the two positioning screws 15 respectively penetrate into the two guide channels 2 and correspond to the two guide sleeves 4 .

[0032] In this embodiment, two positioning screws 15 are respectively inserted into the two guide channels 2 through threaded connection, and the two guide sleeves 4 are supported and positioned to be fixed, so that the two guide sleeves 4 remain stable.

[0033] Specifically, the two guide sleeves 4 are both fixedly connected with sealing rings 16 , and the two piston rods 6 are movable through the two sealing rings 16 .

[0034] In this embodiment, the two piston rods 6 pass through two guide sleeves 4 and two sealing rings 16 when rotating and extending. The two sealing rings 16 are used to ensure the sealing effect of the two piston rods 6 when extending and extending.

[0035] Specifically, a plurality of mounting holes 17 are formed on the outer surface of the cylinder body 1 .

[0036] In this embodiment, multiple surfaces of the cylinder block 1 can be mounted through multiple mounting holes 17 to meet different mounting situations.

[0037] Working principle: Air enters through a trachea connected to the air port 11 at the tail end. The gas enters a guiding channel 2, and then enters another guiding channel 2 through the air holes 12 at the tail end. After the two guiding channels 2 are filled with gas at the tail ends, the two pistons 9 are pushed to slide in the two guiding channels 2. The two pistons 9 drive the two piston rods 6 to move. The two piston rods 6 pass through the two guiding sleeves 4 and extend out of the guiding channels 2. During the extension process, the two piston rods 6 drive the two pins 8 to move. The two pins 8 slide in the two guiding grooves 5, so that the two piston rods 6 rotate when extending. The two piston rods 6 drive the two pressing plates 10 to move and rotate at the same time, and the workpiece is rotationally clamped at multiple stations through the two pressing plates 10.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multi-station rotary clamping cylinder, comprising a cylinder block (1), characterized in that: Two guiding channels (2) are formed in the cylinder block (1). A rear end cover (3) and a guiding sleeve (4) are detachably connected in each of the two guiding channels (2), and the two rear end covers (3) correspond to the two guiding sleeves (4) respectively. Guiding grooves (5) are formed on the circumferential surfaces of the two guiding sleeves (4). Piston rods (6) are movably inserted into the two guiding channels (2), and the two piston rods (6) respectively pass through the two guiding sleeves (4) movably. Pin holes (7) are formed on the circumferential surfaces of the two piston rods (6). A pin (8) is rotatably connected in each of the two pin holes (7), and the two pins (8) are respectively slidably connected in the two guiding grooves (5). One end of each of the two piston rods (6) is fixedly connected with a piston (9), and the two pistons (9) are respectively slidably connected in the two guiding channels (2) between the two rear end covers (3) and the two guiding sleeves (4). The other end of each of the two piston rods (6) is detachably connected with a pressing plate (10), and the two pressing plates (10) are located on one side of the cylinder block (1). Two air ports (11) are formed at one side end of the cylinder block (1), and the two air ports (11) communicate with one guiding channel (2). Two air holes (12) are formed in the cylinder block (1), and the two air holes (12) communicate with the two guiding channels (2) respectively and correspond to the two air ports (11).

2. The multi-station rotary clamping cylinder according to claim 1, characterized in that: A first snap ring (13) and a second snap ring (14) are detachably connected in each of the two guiding channels (2), and the two first snap rings (13) and the two second snap rings (14) correspond to the two rear end covers (3) and the two guiding sleeves (4) respectively.

3. The multi-station rotary clamping cylinder according to claim 2, characterized in that: Two positioning screws (15) are threadedly connected to the cylinder block (1), and the two positioning screws (15) respectively penetrate into the two guiding channels (2) and correspond to the two guiding sleeves (4).

4. The multi-station rotary clamping cylinder according to claim 3, wherein: Sealing rings (16) are fixedly connected in the two guiding sleeves (4), and the two piston rods (6) respectively pass through the two sealing rings (16) movably.

5. A multi-station rotary clamping cylinder according to claim 4, characterized in that: A plurality of mounting holes (17) are formed on the outer surface of the cylinder block (1).

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