Workpiece clamping and rotating device

Abstract

The utility model provides a workpiece clamping and rotating device which comprises a first clamping unit, the first clamping unit comprises a clamping assembly, the clamping assembly comprises a clamping seat, the clamping seat is vertically arranged, a rotating disc is rotationally arranged in the clamping seat, a plurality of clamping jaws are arranged in the rotating disc in a circumferential array mode, an adjusting rod is coaxially and rotationally arranged on the rotating disc in a penetrating mode, and a sliding sleeve is movably arranged on the adjusting rod; the sliding sleeve is hinged to the clamping jaw through a connecting rod. A first motor is arranged at the rear end of the clamping seat; a transmission mechanism is arranged between the first motor and the clamping base and comprises a pair of transmission wheels, the transmission wheels are movably connected through a belt, a rotating rod is coaxially connected into the other transmission wheel, and the rotating rod drives the rotating disc to rotate through transmission of a belt wheel. The first motor is movably arranged in the axis direction of the adjusting rod and used for cutting off or connecting connection between the adjusting rod and one of the transmission wheels. According to the scheme, switching of the two working states of workpiece clamping and workpiece rotating can be achieved only by controlling the displacement of the first motor.

Description

Technical Field

[0001] The present application relates to the technical field of clamping devices, and particularly to a workpiece clamping and rotating device. Background Art

[0002] During the process of workpiece processing and treatment, many processes require clamping and rotating the workpiece to ensure that the states of all parts of the workpiece are uniform and consistent. For this purpose, most use clamping components to clamp the workpiece, and then rotate the clamping components after clamping and fixing, so as to realize the clamping and rotation of the workpiece. To realize the clamping and rotation of the workpiece, it is usually necessary to separately set driving elements to drive in the two processes of clamping the workpiece by the clamping component and controlling the rotation of the clamping component. However, such a setting not only complicates the structure of the device, but also increases the cost required for part processing. Therefore, it is necessary to make improvements. Summary of the Utility Model

[0003] In order to solve the deficiencies of the above-mentioned prior art, the present application provides a workpiece clamping and rotating device, which realizes the clamping and rotation of the workpiece only by relying on one driving element, simplifies the device structure, and reduces the workpiece processing cost.

[0004] To achieve the above object, the present utility model adopts the following technologies:

[0005] A workpiece clamping and rotating device includes a first clamping unit. The first clamping unit includes a clamping component. The clamping component includes a clamping seat which is vertically placed. A turntable is rotatably arranged in the clamping seat, and the axis direction of the turntable is perpendicular to the height direction of the clamping seat. A plurality of claws are circumferentially arrayed inside the turntable, and the claws are all arranged to move along the radial direction of the turntable. An adjusting rod is coaxially and rotatably penetrated through the turntable. A threaded sleeve is sleeved at one end of the adjusting rod where the turntable is located. A sliding sleeve is movably arranged on the threaded sleeve, and the sliding sleeve is hinged to the claw through a connecting rod;

[0006] A first motor is arranged at the rear end of the clamping seat;

[0007] A transmission mechanism is arranged between the first motor and the clamping seat. The transmission mechanism includes a pair of transmission wheels, and the transmission wheels are movably connected by a belt. The axis direction of one of the transmission wheels is the same as the axis direction of the adjusting rod, and a rotating rod is coaxially connected inside the other transmission wheel. The rotating rod drives the rotation of the turntable through belt pulley transmission;

[0008] Wherein, the first motor is arranged to move along the axis direction of the adjusting rod for cutting off or engaging the connection between the adjusting rod and one of the transmission wheels.

[0009] The beneficial effects of the present utility model are as follows: By only arranging the movement of one driving element, i.e., the first motor, its output shaft is respectively connected to the adjusting rod and one of the transmission wheels. When the first motor is connected to the adjusting rod, the first motor controls the axial movement of the sliding sleeve on the adjusting rod and adjusts the radial position of the clamping jaws according to the diameter of the workpiece to complete the fixation of the workpiece. When the first motor is connected to one of the transmission wheels, the first motor drives the rotation of one of the transmission wheels, and through the belt pulley transmission, the rotating rod coaxially connected to the other transmission wheel also rotates synchronously. The rotating rod drives the rotation of the turntable through the belt pulley transmission, thereby realizing the rotation of the workpiece. In this process, only by controlling the displacement of the first motor can the switching between the two working states of clamping the workpiece and rotating the workpiece be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are only for illustrating the selected embodiments, not all possible implementation schemes, and are not intended to limit the scope of the present utility model.

[0011] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0012] Figure 2 is the overall structural schematic diagram of the embodiment of the present application.

[0013] Figure 3 is the partial schematic diagram of the first clamping unit of the embodiment of the present application.

[0014] Figure 4 is the structural schematic diagram when the first motor in the first clamping unit of the embodiment of the present application is connected to the adjusting rod.

[0015] Figure 5 is the structural schematic diagram when the first motor in the first clamping unit of the embodiment of the present application is connected to one of the transmission wheels.

[0016] Figure 6 is the side view of the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following describes the embodiments of the present utility model in detail with reference to the drawings. However, the described embodiments are only a part of the embodiments of the present utility model, not all of them.

[0018] The embodiment of the present application provides a workpiece clamping and rotating device, as Figures 1 - 3 shown, including a first clamping unit, a first motor 3, and a transmission mechanism 4.

[0019] The first clamping unit includes a clamping assembly, and the clamping assembly includes a clamping seat 1 which is vertically placed. A turntable 2 is rotatably arranged in the clamping seat 1, and the axis direction of the turntable 2 is perpendicular to the height direction of the clamping seat 1. A plurality of claws 21 are arranged in a circumferential array on the inner circumference of the turntable 2, and the claws 21 are all arranged to move along the radial direction of the turntable 2. An adjusting rod 22 is coaxially and rotatably penetrated through the turntable 2. A threaded sleeve is sleeved at one end of the adjusting rod 22 where the turntable 2 is located. A sliding sleeve 23 is movably arranged on the threaded sleeve, and the sliding sleeve 23 is hinged to the claw 21 through a connecting rod 24. By rotating the adjusting rod 22, the axial position of the sliding sleeve 23 changes, realizing that the claws 21 simultaneously tighten inward or open outward, so as to adapt to the fixation of cylindrical workpieces with different diameters. After the fixation is completed, the cylindrical workpiece can be rotated at a constant speed by rotating the turntable 2.

[0020] The first motor 3 is arranged at the rear end of the clamping seat 1.

[0021] The transmission mechanism 4 is arranged between the first motor 3 and the clamping seat 1. The transmission mechanism 4 includes a pair of transmission wheels 41, and the transmission wheels 41 are movably connected by a belt. The axis direction of one of the transmission wheels 41 is the same as the axis direction of the adjusting rod 22, and a rotating rod 42 is coaxially connected inside the other transmission wheel 41. The rotating rod 42 drives the rotation of the turntable 2 through belt pulley transmission.

[0022] Among them, the first motor 3 is arranged to move along the axis direction of the adjusting rod 22, and is used to cut off or engage the connection between the adjusting rod 22 and one of the transmission wheels 41. When the output shaft of the first motor 3 is connected to the adjusting rod 22, the first motor 3 is used to drive the rotation of the adjusting rod 22. When the first motor 3 moves to a position and is connected to the transmission wheel 41, the connection between the first motor 3 and the adjusting rod 22 is cut off. At this time, the first motor 3 is used to drive the connection of one of the transmission wheels 41.

[0023] Specifically, as Figures 3 - 5 shown, an external spline shaft is sleeved at one end of the adjusting rod 22 on the back side of the turntable 2. The rotating end of the transmission wheel 41 coaxially arranged with the adjusting rod 22 is an internal spline shaft. A control shaft is sleeved on the output shaft of the first motor 3. The control shaft includes a first section and a second section. The first section is an internal spline shaft and is used to drive the rotation of the adjusting rod 22. The second section is an external spline shaft and is used to drive the rotation of the transmission wheel 41 coaxially arranged with the adjusting rod 22. When the first section of the control shaft is connected to the adjusting rod 22, the first motor 3 is used to drive the rotation of the adjusting rod 22. When the second section of the control shaft is connected to the transmission wheel 41, the first motor 3 is used to drive the rotation of the transmission wheel 41. And by connecting the shafts with splines, the connection between the shafts can be made closer, ensuring the positioning accuracy and transmission accuracy of the shafts, and it can bear larger axial and radial loads, and can adapt to application scenarios that require transmitting larger torques.

[0024] Specifically, asFigures 1 - 3 As shown, a mounting plate 5 is provided at the rear end of the clamping seat 1. A mounting seat 31 is movably arranged on the mounting plate 5, and its moving direction is consistent with the axis direction of the output shaft of the first motor 3. The mounting seat 31 is used for fixing the first motor 3. The movement of the first motor 3 is realized by the movement of the mounting seat 31, and further, the switching between the first motor 3 acting on the adjusting rod 22 or one of the transmission wheels 41 is realized. A groove is provided at the bottom of the mounting seat 31, and a convex block is provided on the upper end surface of the mounting plate 5. The mounting seat 31 is slidably matched with the convex block through the groove, so that the mounting seat 31 can move more accurately in a targeted manner.

[0025] Specifically, as Figures 1 - 3 shown, a cylinder 6 is provided on the upper end surface of the mounting plate 5. The moving end of the cylinder 6 is connected to the mounting seat 31 and is used to control the movement of the first motor 3.

[0026] Specifically, as Figures 1 - 6 shown, a second clamping unit is oppositely arranged on the opposite side of the first clamping unit. The first clamping unit and the second clamping unit are respectively used to clamp both ends of the cylindrical workpiece, and the distance between the first clamping unit and the second clamping unit is adjustable. The second clamping unit also includes the clamping assembly, and the other end of its adjusting rod 22 is connected to the output shaft of a second motor 7.

[0027] Specifically, as Figure 6 shown, the first clamping unit is fixedly arranged at one end. An internal thread hole is provided at the bottom of the clamping seat 1 of the second clamping unit. The clamping seat 1 is slidably matched with a screw rod 8 through the internal thread hole. One end of the screw rod 8 is connected to the output end of a third motor 9, and the third motor 9 is used to drive the rotation of the screw rod 8. The setting of the screw rod 8 not only realizes the control of the distance between the first clamping unit and the second clamping unit, but also realizes the positioning of the second clamping unit, so that it can only move along the axis direction of the turntable 2, thereby controlling the axes of the turntables 2 of the first clamping unit and the second clamping unit to be always collinear.

[0028] Specifically, as Figure 6 shown, the clamping seat 1 of the second clamping unit movably penetrates through the rotating rod 42, and the rotating rod 42 drives the rotation of the turntable 2 of the second clamping unit through belt transmission.

[0029] During application, since the first clamping unit is fixedly arranged in this embodiment, at this time, the second clamping unit is located at the far end of the screw rod 8, that is, the distance between the first clamping unit and the second clamping unit is the maximum distance. One end of the cylindrical workpiece is horizontally and coaxially placed in the turntable 2 of the first clamping unit.

[0030] Start the third motor 9 to move the second clamping unit, and adjust the distance between the first clamping unit and the second clamping unit according to the height of the cylindrical workpiece, so that the other end of the cylindrical workpiece is horizontally and coaxially placed in the turntable 2 of the second clamping unit.

[0031] The position of the first motor 3 is moved by controlling the air cylinder 6, so that the first section of the first motor 3 is connected to the adjusting rod 22. The first motor 3 and the second motor 7 are started, and the axial movement of the sliding sleeve 23 on the adjusting rod 22 is converted into the radial movement of the claw 21 on the turntable 2 through the connecting rod 24. The positions of the claws 21 in the first clamping unit and the second clamping unit are adjusted according to the diameters of both ends of the cylindrical workpiece, so as to fix and limit the cylindrical workpiece and make its axis coincide with the axis of the turntable 2.

[0032] After the fixation is completed, the output shafts of the first motor 3 and the second motor 7 are stopped from rotating. The position of the first motor 3 is moved by controlling the air cylinder 6, so that the second section of the control shaft on the first motor 3 is connected to one of the transmission wheels 41. The first motor 3 is started, so that the transmission wheels 41 all start to rotate. The rotation of the other transmission wheel 41 drives the coaxial rotation of the rotating rod 42. The rotation of the rotating rod 42 drives the same-direction rotation of the turntables 2 of the first clamping unit and the second clamping unit through belt pulley transmission. The cylindrical workpiece rotates with the rotation of the turntable 2 under the limitation of the claws 21.

[0033] With the arrangement of the above structure, through the movable arrangement of the first motor 3, the disconnection and engagement of the adjusting rod 22 and one of the transmission wheels 41 can be realized only by the first motor 3. It can not only realize the control drive for the claws 21 to tighten and open simultaneously, so that the claws can adapt to the clamping of cylindrical workpieces with different diameters, but also realize the rotational drive for the turntable 2, thereby driving the rotation of the cylindrical workpiece. Through the relative arrangement of the first clamping unit and the second clamping unit, the distance between the first clamping unit and the second clamping unit can be adjusted according to the height of the cylindrical workpiece, improving the wide applicability of the device.

[0034] In application, the above is only the preferred embodiment of the present application and is not used to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A workpiece clamping and rotating device, characterized in that It includes a first clamping unit. The first clamping unit includes a clamping assembly. The clamping assembly includes a clamping seat (1) which is vertically placed. A turntable (2) is rotatably arranged in the clamping seat (1). The axis direction of the turntable (2) is perpendicular to the height direction of the clamping seat (1). A plurality of claws (21) are arranged in a circumferential array on the inner circumference of the turntable (2). The claws (21) are all arranged to move along the radial direction of the turntable (2). An adjusting rod (22) is coaxially and rotatably penetrated through the turntable (2). A threaded sleeve is sleeved at one end of the adjusting rod (22) where the turntable (2) is located. A sliding sleeve (23) is movably arranged on the threaded sleeve. The sliding sleeve (23) and the claw (21) are hinged by a connecting rod (24). A first motor (3) is arranged at the rear end of the clamping seat (1). A transmission mechanism (4) is arranged between the first motor (3) and the clamping seat (1). The transmission mechanism (4) includes a pair of transmission wheels (41). The transmission wheels (41) are movably connected by a belt. The axis direction of one of the transmission wheels (41) is the same as the axis direction of the adjusting rod (22). A rotating rod (42) is coaxially connected inside the other transmission wheel (41). The rotating rod (42) drives the rotation of the turntable (2) through belt pulley transmission. Among them, the first motor (3) is arranged to move along the axis direction of the adjusting rod (22) for cutting off or engaging the connection between the adjusting rod (22) and one of the transmission wheels (41).

2. The workpiece clamping and rotating device according to claim 1, characterized in that, An external spline shaft is sleeved at one end of the adjusting rod (22) on the back side of the turntable (2). The rotating end of the transmission wheel (41) coaxially arranged with the adjusting rod (22) is an internal spline shaft. A control shaft is sleeved on the output shaft of the first motor (3). The control shaft includes a first section and a second section. The first section is an internal spline shaft for driving the rotation of the adjusting rod (22). The second section is an external spline shaft for driving the rotation of the transmission wheel (41) coaxially arranged with the adjusting rod (22).

3. A workpiece clamping and rotating device according to claim 1, characterized in that, An installation plate (5) is arranged at the rear end of the clamping seat (1). An installation seat (31) is movably arranged on the installation plate (5). Its moving direction is the same as the axis direction of the output shaft of the first motor (3). The installation seat (31) is used for fixing the first motor (3). A groove is arranged at the bottom of the installation seat (31). A convex block is arranged on the upper end surface of the installation plate (5). The installation seat (31) is slidably matched with the convex block through the groove.

4. The workpiece clamping and rotating device according to claim 3, characterized in that, A cylinder (6) is arranged on the upper end surface of the installation plate (5). The moving end of the cylinder (6) is connected to the installation seat (31) for controlling the movement of the first motor (3).

5. A workpiece clamping and rotating device according to claim 1, characterized in that, A second clamping unit is oppositely arranged on the opposite side of the first clamping unit. And the distance between the second clamping unit and the first clamping unit is adjustable. The second clamping unit includes a clamping assembly. The other end of its adjusting rod (22) is connected to the output shaft of a second motor (7).

6. A workpiece clamping and rotating device according to claim 5, characterized in that, An internal threaded hole is opened at the bottom of the clamping seat (1) of the second clamping unit. The clamping seat (1) is slidably matched with a screw rod (8) through the internal threaded hole. One end of the screw rod (8) is connected to the output end of a third motor (9). The third motor (9) is used for driving the rotation of the screw rod (8).

7. The workpiece clamping and rotating device according to claim 5, wherein The clamping seat (1) of the second clamping unit is movably penetrated through the rotating rod (42). The rotating rod (42) drives the rotation of the turntable (2) of the second clamping unit through belt transmission.

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