Hollow full-stroke chuck device

Abstract

The utility model discloses a hollow full-stroke chuck device which comprises a base, the base comprises a front disc, a rear disc and a hollow cavity located between the front disc and the rear disc, two sets of clamping jaw assemblies are symmetrically arranged on the surface of the front disc respectively, and each set of clamping jaw assembly comprises two symmetrically-arranged clamping jaw units. The clamping jaw unit comprises a guide rail and a clamping jaw base slidably connected with the guide rail, a clamping jaw is arranged on the clamping jaw base, a rack is arranged on the lower surface of the clamping jaw base, a first transmission gear for driving the rack to move is vertically arranged at the bottom of the rack, and the first transmission gear is meshed with the rack; and a gear transmission assembly for driving the first transmission gear to rotate is arranged in the hollow cavity, and in the structure, the driving stroke of the clamping jaws can be lengthened through the matching effect of the rack and the vertically-arranged first transmission gear, so that the applicability of the chuck is improved.

Description

Technical Field

[0001] This utility model relates to the field of chucks, and in particular to a hollow full-stroke chuck device. Background Technology

[0002] In the laser tube cutting machine industry, the mainstream rear chucks are barrel-type chucks and extended-support type chucks, neither of which features a full-stroke jaw design. When clamping tubes, it is usually necessary to combine internal clamping and external support methods to meet the clamping requirements of different sizes. Sometimes, it is also necessary to change the mounting position or jaws to accommodate a wider range of tube sizes. Small tube cutting machines, due to their smaller cutting range, require relatively fewer jaws and have simpler mounting positions. However, large tube cutting machines, due to their wide cutting range, have shorter rear chuck jaw strokes, thus requiring more mounting positions to cover different clamping needs. For users engaged in outsourcing, the variety and quantity of tubes being cut significantly reduce production efficiency due to frequent jaw or position changes. Therefore, developing a full-stroke chuck to improve production efficiency is particularly necessary. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a hollow full-stroke chuck device, which can improve the formation of the gripper and solve the problem of the gripper needing to be frequently adjusted.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a hollow full-stroke chuck device, including a base, the base including a front disc, a rear disc and a hollow cavity located between the front disc and the rear disc, two sets of gripper assemblies are symmetrically arranged on the surface of the front disc, each set of gripper assemblies includes two symmetrically arranged gripper units, each gripper unit includes a guide rail and a gripper base slidably connected to the guide rail, grippers are arranged on the gripper base, a rack is arranged on the lower surface of the gripper base, a first transmission gear is vertically arranged at the bottom of the rack to drive the rack to move, the first transmission gear meshes with the rack, and a gear transmission assembly for driving the first transmission gear to rotate is arranged in the hollow cavity.

[0005] Furthermore, there are two gear transmission assemblies, which respectively drive the first transmission gear in the two sets of gripper assemblies to rotate.

[0006] Furthermore, the gear transmission assembly includes a gear disk and a gear disk drive mechanism for driving the gear disk to rotate. A first rotating rod is provided on the side of the gear disk. A second transmission gear and a first bevel gear are respectively provided on the first rotating rod. The second transmission gear meshes with the gear disk. The assembly also includes a second rotating rod. The first transmission gear is mounted on the second rotating rod. A second bevel gear that meshes with the first bevel gear is also mounted on the second rotating rod.

[0007] Furthermore, the gear drive mechanism includes a cylinder and a cylinder shaft. The two ends of the cylinder shaft are connected to the front and rear discs, respectively. A cylinder tailstock is provided at the tail end of the cylinder, and the cylinder tailstock is rotatably connected to the cylinder shaft. A cylinder connector is provided at the drive end of the cylinder, and a cantilever pin is also included. One end of the cantilever pin is rotatably connected to the gear, and the other end of the cantilever pin is rotatably connected to the cylinder connector.

[0008] Furthermore, it also includes a first gear seat and a second gear seat, the first gear seat and the second gear seat are connected to the inner side of the front disc, the first rotating rod is installed in the first gear seat and rotatably connected to the first gear seat, and the second rotating rod is installed in the second gear seat and rotatably connected to the second gear seat.

[0009] Furthermore, guide blocks are provided on both sides of the guide rail, guide grooves are provided in the guide blocks, and protrusions extending into the guide grooves are provided on both sides of the gripper base.

[0010] Furthermore, an inner ring is provided between the front and rear discs, and two toothed discs are fitted onto the inner ring. A toothed disc spacer is provided between the toothed discs and the rear discs. A stop block is provided on the inner ring to prevent the toothed discs from moving axially.

[0011] The beneficial effects of this utility model are:

[0012] 1. In this structure, the drive stroke of the gripper can be lengthened by the cooperation of the rack and the vertically arranged first transmission gear, thereby increasing the applicability of this chuck.

[0013] 2. The structure uses two gear transmission components to enable separate control of the two sets of gripper components, thus achieving accurate gripping even when dealing with non-circular tubes.

[0014] 3. In this structure, the precise coordination between the gear plate and the gear plate drive mechanism enables rapid and accurate control of the gripper assembly. The introduction of the cylinder further enhances the automation level of the device, making the opening and closing of the gripper more rapid and stable, thus improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a hollow full-stroke chuck device according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the internal structure of a hollow full-stroke chuck device according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the internal structure of a hollow full-stroke chuck device according to an embodiment of this application, from another perspective.

[0018] The components in the diagram are labeled as follows: front disc 1, rear disc 2, gripper unit 3, guide rail 31, gripper base 32, gripper 33, rack 34, first transmission gear 35, guide block 36, gear disc 41, first rotating rod 42, second transmission gear 43, first bevel gear 44, second rotating rod 45, second bevel gear 46, first gear seat 47, second gear seat 48, cylinder 51, cylinder shaft 52, cylinder tailstock 53, cylinder connector 54, cantilever pin 55, and stop block 6. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, an embodiment of this application discloses a hollow full-stroke chuck device, including a base. The base includes a front disc 1, a rear disc 2, and a hollow cavity located between the front disc 1 and the rear disc 2. Two sets of gripper assemblies are symmetrically arranged on the surface of the front disc 1. Each set of gripper assemblies includes two symmetrically arranged gripper units 3. Each gripper unit 3 includes a guide rail 31 and a gripper base 32 slidably connected to the guide rail 31. Grippers 33 are arranged on the gripper base 32. A rack 34 is arranged on the lower surface of the gripper base 32. A first transmission gear 35 is vertically arranged at the bottom of the rack 34 to drive the rack 34 to move. The first transmission gear 35 meshes with the rack 34. A gear transmission assembly for driving the first transmission gear 35 to rotate is arranged in the hollow cavity.

[0021] Specifically, this structure can be installed on a laser cutting machine. During operation, the tail end of the tube is located between two sets of symmetrical gripper assemblies. Then, the gear transmission assembly drives the first transmission gear 35 to rotate. The first transmission gear 35 drives the rack 34 to move back and forth. Since the rack 34 is connected to the gripper base 32, the back and forth movement of the rack 34 is converted into the back and forth sliding of the gripper base 32 on the guide rail 31, thereby driving the gripper 33 to clamp or release the tube.

[0022] Specifically, when clamping pipes of different sizes, the clamping position of the jaws 33 can be changed simply by adjusting the rotation angle of the gear transmission assembly, achieving a full-stroke clamping effect. This design not only simplifies the operation process but also improves the accuracy and stability of clamping.

[0023] In this embodiment, two gear transmission assemblies are provided, and the two gear transmission assemblies respectively drive the first transmission gear 35 in the two sets of gripper assemblies to rotate.

[0024] Specifically, to achieve independent control of the two sets of gripper assemblies, two gear transmission assemblies are respectively installed in the hollow cavity of the base and connected to the first transmission gear 35 of their respective gripper assemblies. This design allows each gripper assembly to perform gripping and releasing actions independently, thereby improving the flexibility and applicability of the device. For example, when gripping non-circular pipes, the rotation angle of the two gear transmission assemblies can be adjusted to allow the two sets of gripper assemblies to grip the pipe with different clamping forces and positions, ensuring the stability and accuracy of the gripping.

[0025] In this embodiment, the gear transmission assembly includes a gear disk 41 and a gear disk drive mechanism for driving the gear disk 41 to rotate. A first rotating rod 42 is provided on the side of the gear disk 41. A second transmission gear 43 and a first bevel gear 44 are respectively provided on the first rotating rod 42. The second transmission gear 43 meshes with the gear disk 41. The assembly also includes a second rotating rod 45. The first transmission gear 35 is mounted on the second rotating rod 45. A second bevel gear 46 that meshes with the first bevel gear 44 is also mounted on the second rotating rod 45.

[0026] Specifically, the gear drive mechanism drives the gear disk 41 to rotate, and the second transmission gear 43 on the gear disk 41 rotates accordingly. Since the second transmission gear 43 and the first bevel gear 44 on the first rotating rod 42 are not on the same plane, they need to be driven by the second bevel gear 46 on the second rotating rod 45 so that the first transmission gear 35 can rotate.

[0027] This gear transmission method is not only compact in structure but also highly efficient, ensuring precise control of the gripper 33. Furthermore, since the gear drive mechanism can independently control the rotation of each gear 41, independent control of the two gripper assemblies is possible, further enhancing the flexibility and applicability of the device.

[0028] In this embodiment, the gear drive mechanism includes a cylinder 51 and a cylinder shaft 52. The two ends of the cylinder shaft 52 are connected to the front disc 1 and the rear disc 2, respectively. The tail end of the cylinder 51 is provided with a cylinder tail seat 53, which is rotatably connected to the cylinder shaft 52. The drive end of the cylinder 51 is provided with a cylinder connector 54 and also includes a cantilever pin 55. One end of the cantilever pin 55 is rotatably connected to the gear disc 41, and the other end of the cantilever pin 55 is rotatably connected to the cylinder connector 54.

[0029] Specifically, cylinder 51 is connected to cantilever pin 55 through cylinder connector 54. When the drive end of cylinder 51 extends or retracts, it will cause cantilever pin 55 to swing. Since one end of cantilever pin 55 is rotatably connected to gear plate 41, the swing of cantilever pin 55 will be converted into the rotation of gear plate 41.

[0030] This cylinder 51-driven rotation method for the geared disc 41 is not only simple in structure but also provides a large driving force, ensuring stable rotation of the geared disc 41. Furthermore, since the cylinder 51 can independently control the rotation of each geared disc 41, independent control of the two sets of gripper assemblies can be achieved, further improving the automation level and production efficiency of the device. To ensure stable driving of the cylinder 51, the cylinder shaft 52 is connected at both ends to the front disc 1 and the rear disc 2 respectively, ensuring stable installation of the cylinder 51. Simultaneously, the cylinder tailstock 53 is rotatably connected to the cylinder shaft 52, enabling the cylinder 51 to maintain a stable rotational state during driving and avoiding transmission errors caused by cylinder 51 wobbling.

[0031] In this embodiment, a first gear seat 47 and a second gear seat 48 are also included. The first gear seat 47 and the second gear seat 48 are connected to the inner side of the front disc 1. The first rotating rod 42 is installed in the first gear seat 47 and rotatably connected to the first gear seat 47. The second rotating rod 45 is installed in the second gear seat 48 and rotatably connected to the second gear seat 48.

[0032] Specifically, the arrangement of the first gear seat 47 and the second gear seat 48 not only provides stable support for the first rotating rod 42 and the second rotating rod 45, but also ensures their stability and accuracy during rotation. The first rotating rod 42 and the second rotating rod 45 are connected to the inner side of the front disc 1 through the first gear seat 47 and the second gear seat 48 respectively. This connection method is not only structurally robust, but also effectively reduces friction and loss during transmission, improving transmission efficiency and accuracy.

[0033] In this embodiment, guide blocks 36 are provided on both sides of the guide rail 31, and guide grooves are provided in the guide blocks 36. Protrusions extending into the guide grooves are provided on both sides of the gripper base 32.

[0034] Specifically, the guide block 36 and guide groove not only provide precise guidance for the sliding of the gripper base 32 on the guide rail 31, but also ensure the stability and accuracy of the gripper base 32 during the sliding process. The protrusion extending into the guide groove effectively prevents the gripper base 32 from shifting or wobbling during sliding, thereby improving the stability and accuracy of the gripper 33 in holding the pipe. Simultaneously, the design of the guide block 36 and guide groove makes the sliding of the gripper base 32 smoother, reducing friction and resistance during sliding and improving the transmission and clamping efficiency of the device. This design not only improves the overall performance of the device but also enables the device to maintain a stable clamping effect during long-term use, extending the device's service life.

[0035] In this embodiment, an inner ring is provided between the front disc 1 and the rear disc 2, and two toothed discs 41 are fitted on the inner ring. A toothed disc 41 spacer is provided between the front disc 1 and the rear disc 2. A stop block 6 is provided on the inner ring to prevent the toothed discs 41 from moving axially.

[0036] Specifically, the inner ring and the spacer plate on the gear disc 41 not only provide stable support for the gear disc 41, but also ensure the smoothness and accuracy of its rotation. The gear disc 41, fitted onto the inner ring, effectively prevents it from wobbling or shifting during rotation, thus improving transmission stability and accuracy. Simultaneously, the spacer plate on the gear disc 41 effectively reduces friction and wear between the gear discs and ensures consistent spacing, further improving transmission efficiency and accuracy. The stop block 6 effectively prevents the gear disc 41 from moving axially, ensuring stable rotation.

[0037] The above design not only improves the overall performance of the device but also ensures stable transmission during long-term use, extending its service life. Furthermore, this device boasts advantages such as simple structure, convenient operation, stable clamping, and wide applicability, making it widely applicable in clamping and cutting various pipe materials, providing strong technical support for the development of the laser pipe cutting machine industry.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hollow full-stroke chuck device, characterized in that: The device includes a base, which includes a front disc (1), a rear disc (2), and a hollow cavity located between the front disc (1) and the rear disc (2). Two sets of gripper assemblies are symmetrically arranged on the surface of the front disc (1). Each set of gripper assemblies includes two symmetrically arranged gripper units (3). Each gripper unit (3) includes a guide rail (31) and a gripper base (32) slidably connected to the guide rail (31). A gripper (33) is provided on the gripper base (32). A rack (34) is provided on the lower surface of the gripper base (32). A first transmission gear (35) is vertically arranged at the bottom of the rack (34) to drive the rack (34) to move. The first transmission gear (35) meshes with the rack (34). A gear transmission assembly for driving the first transmission gear (35) to rotate is provided in the hollow cavity.

2. The hollow full-stroke chuck device as described in claim 1, characterized in that: The gear transmission assembly is provided in two parts, and the two gear transmission assemblies respectively drive the first transmission gear (35) in the two sets of gripper assemblies to rotate.

3. The hollow full-stroke chuck device as described in claim 1 or 2, characterized in that: The gear transmission assembly includes a gear disk (41) and a gear disk drive mechanism for driving the gear disk (41) to rotate. A first rotating rod (42) is provided on the side of the gear disk (41). A second transmission gear (43) and a first bevel gear (44) are respectively provided on the first rotating rod (42). The second transmission gear (43) meshes with the gear disk (41). The assembly also includes a second rotating rod (45). The first transmission gear (35) is mounted on the second rotating rod (45). A second bevel gear (46) meshes with the first bevel gear (44) is also mounted on the second rotating rod (45).

4. The hollow full-stroke chuck device as described in claim 3, characterized in that: The gear drive mechanism includes a cylinder (51) and a cylinder shaft (52). The two ends of the cylinder shaft (52) are connected to the front disc (1) and the rear disc (2) respectively. The tail end of the cylinder (51) is provided with a cylinder tail seat (53). The cylinder tail seat (53) is rotatably connected to the cylinder shaft (52). The drive end of the cylinder (51) is provided with a cylinder connector (54) and also includes a cantilever pin (55). One end of the cantilever pin (55) is rotatably connected to the gear disc (41), and the other end of the cantilever pin (55) is rotatably connected to the cylinder connector (54).

5. The hollow full-stroke chuck device as described in claim 3, characterized in that: It also includes a first gear seat (47) and a second gear seat (48), the first gear seat (47) and the second gear seat (48) being connected to the inner side of the front disc (1), the first rotating rod (42) being installed in the first gear seat (47) and rotatably connected to the first gear seat (47), and the second rotating rod (45) being installed in the second gear seat (48) and rotatably connected to the second gear seat (48).

6. The hollow full-stroke chuck device as described in claim 1, characterized in that: Guide blocks (36) are provided on both sides of the guide rail (31), and guide grooves are provided in the guide blocks (36). Protrusions extending into the guide grooves are provided on both sides of the gripper base (32).

7. The hollow full-stroke chuck device as described in claim 3, characterized in that: An inner ring is provided between the front disc (1) and the rear disc (2), and two toothed discs (41) are fitted on the inner ring. A toothed disc (41) spacer is provided between 2 and the toothed disc (41). A stop block (6) is provided on the inner ring to prevent the toothed disc (41) from moving axially.

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