Pneumatic workpiece fixing structure

Abstract

The utility model relates to the field of workpiece machining, in particular to a pneumatic workpiece fixing structure. The pneumatic workpiece fixing structure comprises a rack, a first air cylinder, a double-groove plate, a sliding shaft, a hinge plate, a first supporting frame and the like, the first air cylinder is installed in the rack, two through holes are formed in the bottom of the rack, and the lower end of a telescopic rod of the first air cylinder penetrates through the through holes to be connected with the double-groove plate; sliding grooves are formed in the front inner walls and the rear inner walls of groove positions on the two sides of the double-groove plate, a sliding shaft is slidably connected between the two sliding grooves on the same side, a hinge plate is arranged on the sliding shaft, and first supporting frames are symmetrically connected to the two sides of the lower portion of the rack. Through cooperation of the second flange connector and the clamping plate, when workpieces of different shapes or sizes need to be machined, the current clamping plate can be detached through a tool, then the current clamping plate is replaced with a clamping plate matched with a new workpiece in shape, the current clamping plate is installed on the second flange connector again, and then the new workpiece is machined. And machining requirements of various workpieces can be conveniently and rapidly met.

Description

Technical Field

[0001] The utility model relates to the field of workpiece processing, in particular to a pneumatic workpiece fixing structure. Background Technique

[0002] In today's highly automated industrial production environment, pneumatic technology, especially clamping devices driven by cylinders to fix workpieces, has become a key component on the production line. Such devices, with their rapid response, high positioning accuracy, and gentle clamping characteristics, exhibit excellent performance in demanding working environments, and can frequently, quickly, and accurately clamp and release various workpieces to ensure the efficient and stable production process.

[0003] During the workpiece processing, using a clamping device driven by a cylinder to fix the workpiece is a key step to ensure processing accuracy and efficiency. However, in the process of processing workpieces with traditional clamping devices, since the clamping device adopts an integrated design and the clamping plate inside is fixedly set in advance, this design can usually only fix workpieces of a specific shape or size. If workpieces of different shapes or sizes need to be processed, the entire clamping device needs to be replaced, which not only takes a lot of time but also increases the processing cost, thus affecting the production efficiency of the workpiece and being inconvenient to use.

[0004] In view of the above problems, it is necessary to design a pneumatic workpiece fixing structure with a replaceable clamping plate. Summary of the Utility Model

[0005] In order to overcome the disadvantages that when the existing clamping devices process workpieces of different shapes or sizes, the entire clamping device needs to be replaced, which takes a lot of time and is inconvenient to use, the utility model provides a pneumatic workpiece fixing structure.

[0006] The technical solution of the utility model is: a pneumatic workpiece fixing structure, which includes a frame, a first cylinder, a double-groove plate, a sliding shaft, a hinged plate, a first support frame, a clamping roller, and a clamping assembly. The first cylinder is installed inside the frame. Two through holes are opened at the bottom of the frame. The lower end of the telescopic rod of the first cylinder passes through the through holes and is connected with the double-groove plate. The front and rear inner walls of the two side slots of the double-groove plate are both provided with sliding grooves. A sliding shaft is slidably connected between the two sliding grooves on the same side. A hinged plate is arranged on the sliding shaft. The two sides of the bottom of the frame are symmetrically provided with first support frames. The double-groove plate slidably penetrates through the two first support frames. The side of the hinged plate away from the sliding shaft is hinged with the first support frame. A clamping roller is arranged on the lower side of the hinged plate. A clamping assembly is arranged at the lower part of the frame, and the clamping assembly is used to fix the workpiece.

[0007] Preferably, the clamping assembly includes a second support frame, a compression spring, a guide rod, a sliding plate, a second flange connector, a rotating shaft, and a clamping plate. The second support frame is connected to the rear side of the lower part of the frame. The guide rod is connected inside the second support frame. The sliding plates are symmetrically and slidably connected to the left and right on the guide rod. The clamping roller is in contact with the sliding plate. Compression springs are connected between both sliding plates and the inner wall of the second support frame. A second flange connector is provided in the middle of the sliding plate. The second flange connector penetrates through the sliding plate. Removable clamping plates are installed on one side of the two second flange connectors facing each other. Rotating shafts are connected to one side of the two second flange connectors away from each other.

[0008] Preferably, it further includes a second cylinder, a rack, and a gear. The second cylinder is installed inside the frame. The second cylinder is located behind the first cylinder. The lower end of the telescopic rod of the second cylinder passes through the through hole and is connected to the rack. A gear is provided on the rotating shaft. The gear meshes with the rack.

[0009] Preferably, it further includes rubber gaskets. Rubber gaskets are provided on one side of the two clamping plates facing each other.

[0010] Preferably, the clamping plate is designed in an arc shape.

[0011] Preferably, it further includes a first flange connector. The first flange connector is provided on the frame.

[0012] The utility model has the following advantages: Through the cooperation of the second flange connector and the clamping plate, when it is necessary to process workpieces of different shapes or sizes, the current clamping plate can be removed by using tools, and then the clamping plate matching the shape of the new workpiece can be replaced and reinstalled on the second flange connector, and then the new workpiece can be processed. It is convenient to use and is easy to quickly adapt to the processing requirements of various workpieces. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 is a three-dimensional structural schematic diagram of components such as the double groove plate, sliding shaft, and sliding groove of the utility model.

[0015] Figure 3 is a three-dimensional structural schematic diagram of components such as the second support frame, compression spring, and guide rod of the utility model.

[0016] Figure 4 is a three-dimensional structural schematic diagram of components such as the sliding plate, rotating shaft, and clamping plate of the utility model.

[0017] Figure 5 is a three-dimensional structural schematic diagram of components such as the frame, second cylinder, and rack of the utility model.

[0018] In the above drawings: 1: frame, 2: first flange connector, 3: first cylinder, 4: double groove plate, 5: sliding shaft, 6: sliding groove, 7: hinged plate, 8: first support frame, 9: clamping roller, 91: second support frame, 10: compression spring, 101: guide rod, 11: sliding plate, 12: second flange connector, 13: rotating shaft, 14: clamping plate, 15: rubber gasket, 16: second cylinder, 17: rack, 18: gear. Detailed implementation manners

[0019] Reference to embodiments in this text means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] Embodiment: A pneumatic workpiece fixing structure, as Figures 1 - 5As shown in the figure, it includes a machine frame 1, a first flange connector 2, a first cylinder 3, a double-groove plate 4, a sliding shaft 5, a hinge plate 7, a first support frame 8, a clamping roller 9 and a clamping assembly. A first flange connector 2 is fixedly connected to the top of the machine frame 1. The staff fixes the machine frame 1 on the processing equipment through the first flange connector 2. A first cylinder 3 is installed inside the machine frame 1. Two through holes are opened at the bottom of the machine frame 1. The lower end of the telescopic rod of the first cylinder 3 passes through the through holes and is fixedly connected to a double-groove plate 4. The front and rear inner walls of the left and right slots of the double-groove plate 4 are both provided with sliding grooves 6. A sliding shaft 5 is slidably connected between the two sliding grooves 6 on the same side. An hinge plate 7 is connected to the sliding shaft 5. The left and right sides of the bottom of the machine frame 1 are symmetrically and fixedly connected with first support frames 8. The left and right parts of the double-groove plate 4 respectively slide through the two first support frames 8. The first support frames 8 can guide the linear movement of the double-groove plate 4 to ensure the accuracy of the movement trajectory of the double-groove plate 4. The side of the hinge plate 7 away from the sliding shaft 5 is hinged with the first support frame 8. A clamping roller 9 is connected to the lower side of the hinge plate 7. A clamping assembly is arranged at the lower part of the machine frame 1, and the clamping assembly is used to fix the workpiece; the clamping assembly includes a second support frame 91, a compression spring 10, a guide rod 101, a sliding plate 11, a second flange connector 12, a rotating shaft 13, a clamping plate 14, a rubber gasket 15, a second cylinder 16, a rack 17 and a gear 18. A second support frame 91 is fixedly connected to the rear side of the lower part of the machine frame 1. A guide rod 101 is fixedly connected to the inside of the front side of the second support frame 91. The guide rod 101 is slidably connected with sliding plates 11 symmetrically on the left and right. The clamping roller 9 acts in contact with the sliding plates 11. When the clamping roller 9 is in a rotating state, the clamping roller 9 can push the sliding plates 11 to move. Compression springs 10 are connected between the two sliding plates 11 and the inner wall of the second support frame 91. The compression springs 10 enable the sliding plates 11 to return to their original positions after clamping and releasing. A second flange connector 12 is arranged in the middle of the sliding plate 11. The second flange connector 12 penetrates through the sliding plate 11. Removable clamping plates 14 are installed on the opposite sides of the two second flange connectors 12. The clamping plates 14 are designed in an arc shape and can effectively fix workpieces with a circular cross-section or a curved surface. The clamping plates 14 can realize the flipping of the workpiece in cooperation with the rotation of the second flange connectors 12. Rubber gaskets 15 are arranged on the opposite sides of the two clamping plates 14. The rubber gaskets 15 are used to provide buffering when fixing the workpiece to avoid damaging the surface of the workpiece. Rotating shafts 13 are connected to the opposite sides of the two second flange connectors 12 away from each other. A second cylinder 16 is installed inside the machine frame 1. The second cylinder 16 is located behind the first cylinder 3. The lower end of the telescopic rod of the second cylinder 16 passes through the through holes and is fixedly connected to a rack 17. A gear 18 is fixedly connected to the side of the rotating shaft 13 away from the sliding plate 11. The gear 18 is a cylindrical gear, and the gear 18 meshes with the rack 17. The rack 17 and the gear 18 cooperate to convert linear motion into rotational motion, and the gear 18 transmits the rotational motion to the clamping plate 14.

[0021] During the workpiece processing, when it is necessary to fix the workpiece, the staff installs this device on the processing equipment through the first flange connector 2. After the installation of this device is completed, the staff places the workpiece to be processed between the two clamping plates 14. After the workpiece is placed, the first cylinder 3 is started. The telescopic rod of the first cylinder 3 drives the double-groove plate 4 and all the components thereon to move downward. During the movement of the double-groove plate 4, the double-groove plate 4 moves downward along the first support frame 8, prompting the sliding shaft 5 to move outward along the chute 6. The movement of the sliding shaft 5 drives the hinge plate 7 to rotate, and then drives the clamping roller 9 to rotate. The rotation of the clamping roller 9 contacts the sliding plate 11 and pushes the sliding plate 11 to move along the guide rod 101 towards the side close to the workpiece. The compression spring 10 is stretched. The movement of the sliding plate 11 drives all the components thereon to move towards the side close to the workpiece until the clamping plate 14 moves into contact with the workpiece and fixes the workpiece. After the workpiece is fixed, the first cylinder 3 is turned off. At this time, the workpiece is in a stable clamping state and can be subjected to preliminary processing operations. When it is necessary to process the other side of the workpiece, the staff starts the second cylinder 16. The telescopic rod of the second cylinder 16 drives the rack 17 to move downward. The movement of the rack 17 contacts the gear 18 and drives the gear 18 to rotate, and then drives the rotating shaft 13 and the second flange connector 12 to rotate. The second flange connector 12 drives the clamping plate 14 and the workpiece to rotate synchronously until the workpiece is flipped to the required position, then the second cylinder 16 is turned off. Subsequently, the other side of the workpiece is processed. After the workpiece processing is completed, the above operations opposite to fixing the workpiece are repeated to loosen the clamping plate 14 from the workpiece. Then the staff removes the processed workpiece, which is convenient for collecting the processed workpiece. If it is necessary to process workpieces of different shapes or sizes, the staff uses tools to remove the current clamping plate 14, then replace it with a clamping plate 14 matching the shape of the new workpiece, reinstall it on the second flange connector 12, and then perform processing operations on the new workpiece, thereby realizing the operations of precise clamping, efficient flipping and easy replacement of the clamping plate 14 of the workpiece, improving the overall processing quality and production efficiency, and being convenient to use.

[0022] The above is only the specific implementation manner 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 can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A pneumatic workpiece fixing structure, comprising a frame (1), characterized in that: The invention also comprises a first cylinder (3), a double groove plate (4), a sliding shaft (5), a hinged plate (7), a first support frame (8), a clamping roller (9) and a clamping assembly. The first cylinder (3) is installed inside the frame (1). Two through holes are provided at the bottom of the frame (1). The lower end of the telescopic rod of the first cylinder (3) passes through the through holes and is connected to the double groove plate (4). The front and rear inner walls of the grooves on both sides of the double groove plate (4) are provided with sliding grooves (6). The two sliding grooves (6) on the same side are slidably connected with the sliding shaft (5). The hinged plate (7) is provided on the sliding shaft (5). The first support frames (8) are symmetrically provided on both sides of the bottom of the frame (1). The double groove plate (4) slides through the two first support frames (8). The side of the hinged plate (7) away from the sliding shaft (5) is hingedly matched with the first support frame (8). The lower side of the hinged plate (7) is provided with a clamping roller (9). The lower part of the frame (1) is provided with a clamping assembly, which is used to fix the workpiece.

2. A pneumatic workpiece fixing structure according to claim 1, characterized in that: The clamping assembly comprises a second support frame (91), a compression spring (10), a guide rod (101), a sliding plate (11), a second flange connector (12), a rotating shaft (13) and a clamping plate (14). The rear side of the lower part of the frame (1) is connected to the second support frame (91), the interior of the second support frame (91) is connected to the guide rod (101), the guide rod (101) is symmetrically slidably connected to the sliding plate (11) on the left and right, the clamping roller (9) is in contact with the sliding plate (11), the compression spring (10) is connected between the two sliding plates (11) and the inner wall of the second support frame (91), a second flange connector (12) is arranged in the middle of the sliding plate (11), the second flange connector (12) penetrates the sliding plate (11), the two second flange connectors (12) are both installed with a detachable clamping plate (14) on the sides facing each other, and the two second flange connectors (12) are both connected with the rotating shaft (13) on the sides away from each other.

3. A pneumatic workpiece fixing structure according to claim 2, characterized in that: The invention also comprises a second cylinder (16), a rack (17) and a gear (18); the second cylinder (16) is installed inside the frame (1); the second cylinder (16) is located at the rear side of the first cylinder (3); the lower end of the telescopic rod of the second cylinder (16) passes through a through hole and is connected to the rack (17); the rotating shaft (13) is provided with a gear (18); the gear (18) is meshed with the rack (17).

4. A pneumatic workpiece fixing structure according to claim 3, characterized in that: It also includes a rubber gasket (15), and the rubber gasket (15) is provided on the opposite sides of the two clamping plates (14).

5. A pneumatic workpiece fixing structure according to claim 4, characterized in that: The clamping plate (14) is designed to be in an arc shape.

6. A pneumatic workpiece fixing structure according to claim 5, characterized in that: It also includes a first flange connection head (2), and the frame (1) is provided with the first flange connection head (2).

Images