Device for automatically clamping and rotating outside cylinder section

Abstract

The invention discloses a device for automatically clamping and rotating the outside of a barrel section, and relates to the technical field of clamping jaws, the device comprises a rotating mechanism, an outer ring, an inner ring, a linear driving mechanism, a clamping jaw, an elastic piece and a force increasing block, the outer ring is rotatably arranged in the rotating mechanism, one end of the outer ring extends out of the rotating mechanism, and the other end of the outer ring extends out of the force increasing block; one end of the outer ring is provided with the multiple clamping jaws, each clamping jaw is provided with the corresponding elastic piece, the linear driving mechanism and the inner ring are arranged in the rotating mechanism, one end of the linear driving mechanism is connected with the inner ring, one end of the inner ring is provided with the reinforcement block, and the reinforcement block is connected with the outer ring. And the reinforcement block is matched with the clamping jaw through an inclined surface. And through the arrangement of the linear driving mechanism, the inner ring and the reinforcement block, the problem that a cable pipeline is wound in the rotating process is solved, and it is guaranteed that the workpiece can rotate by any number of turns in the forward direction and the reverse direction after being clamped.

Description

Technical Field

[0001] The invention relates to the technical field of clamping jaws, in particular to a device for automatically clamping and rotating the outside of a barrel section. Background Art

[0002] In the manufacture of fuel tanks for space rockets and various pressure vessels, they are basically formed by coil welding of sheet metal or by processing and welding of thin-walled cylinder sections formed by spinning. Both the cylinder sections formed by spinning and the thin-walled cylinder sections formed by coil welding have large deformation. In the processing of cylinder sections, the assembly welding of cylinder sections and the processing of forming shells, an external clamping mechanism is required to round the cylinder sections or an internal support tool is required to round them before processing and welding. For cylinders or shells with a diameter of less than 200mm and small openings, they can only be welded and processed after being tightened and rounded by an external clamping mechanism.

[0003] The rotary clamping device in the prior art mainly includes a rotating disk, on which a clamping jaw and a motor are arranged. The motor drives a connecting rod to drive the clamping jaw to tighten, thereby clamping the workpiece.

[0004] However, when the rotating disk drives the motor to rotate, the cables of the motor often get tangled, which affects the normal rotation of the rotating disk. In addition, the motor drives the clamping claws through the connecting rod, but the clamping force is insufficient and is limited by space. Summary of the invention

[0005] The purpose of the present invention is to provide a device for automatically clamping and rotating the outside of a barrel section, so as to solve the above technical problems.

[0006] The technical solution adopted by the present invention is as follows:

[0007] The device for automatically clamping and rotating the outside of a barrel section comprises a rotating mechanism, an outer ring, an inner ring, a linear drive mechanism, a clamping jaw, an elastic member and a force-enhancing block. The outer ring is rotatably arranged inside the rotating mechanism, one end of the outer ring extends out of the rotating mechanism, a plurality of clamping jaws are arranged at one end of the outer ring, each of the clamping jaws is respectively provided with the elastic member, the linear drive mechanism and the inner ring are arranged in the rotating mechanism, one end of the linear drive mechanism is connected to the inner ring, one end of the inner ring is provided with the force-enhancing block, and the force-enhancing block and the clamping jaw are matched through an inclined surface.

[0008] Preferably, it also includes a jaw seat, a plurality of the jaw seats are arranged at one end of the outer ring, the middle part of the jaw is hinged to the jaw seat, one end of the elastic member is connected to one end of the jaw, and the other end of the elastic member is connected to the jaw seat.

[0009] Preferably, a rotating shaft is further included, and the rotating shaft is disposed at the other end of the clamping jaw.

[0010] As a further preference, the other end of the clamp is provided with a first inclined surface, one end of the force amplifying block is connected to the inner ring, and the other end of the force amplifying block is provided with a second inclined surface, and the first inclined surface can contact the second inclined surface.

[0011] Preferably, the rotating mechanism includes a base, a ring gear and a first motor, the other end of the outer ring is rotatably disposed in the base, the ring gear is disposed on the outer edge of one end of the outer ring, the first motor is disposed on the base, and the output end of the first motor is meshed with the ring gear through a gear.

[0012] As a further preference, it further includes a first annular guide rail, which is arranged between one end of the outer ring and the base, and connects the base and the outer ring.

[0013] Preferably, a linear guide rail is further included, and the linear guide rail is arranged between the inner ring and the outer ring, and the linear guide rail connects the inner ring and the outer ring.

[0014] As a further preference, the linear drive mechanism includes a second motor and a second annular guide rail, a plurality of the second motors are installed in the base, the output end of the second motor is provided with the second annular guide rail, and the other end of the inner ring is connected to the second annular guide rail.

[0015] Preferably, a protection block is further included, and one end of the clamping jaw is provided with the protection block.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] (1) In the present invention, by setting the rotating mechanism and the linear driving mechanism, the workpiece can be rotated after the workpiece is clamped;

[0018] (2) In the present invention, by setting the linear drive mechanism, the inner ring and the force-enhancing block, there is no cable or pipe entanglement problem during the rotation process, ensuring that the workpiece can be rotated in any number of circles in the forward and reverse directions after being clamped;

[0019] (3) In the present invention, the linear drive mechanism is arranged in the rotating mechanism, and the driving force amplification block and the clamping jaw are matched with the inclined surface, which can solve the problem of insufficient clamping force due to space structure limitation and meet the problem of slippage of the clamping jaw and the workpiece caused by the large forward resistance during welding;

[0020] (4) In the present invention, a protective block is installed at the front end of the clamping jaw to solve the problem of the clamping jaw damaging the workpiece during the clamping process, thereby ensuring the integrity of the workpiece;

[0021] (5) In the present invention, the inner ring moves forward and the front clamp moves synchronously inward to clamp, which solves the problem of deformation of the thin-walled cylinder section after installation and ensures that the workpiece is automatically centered and rounded during the clamping process. After clamping, processing and welding work can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front structural schematic diagram of a device for automatically clamping and rotating the outside of a barrel section in the present invention;

[0023] Figure 2 yes Figure 1 Sectional view along AA direction.

[0024] In the figure: 1. rotating mechanism; 101. base; 102. gear ring; 103. first motor; 104. first annular guide; 105. linear guide; 2. outer ring; 3. inner ring; 4. linear drive mechanism; 401. second motor; 402. second annular guide; 5. clamping jaw; 6. elastic member; 7. force amplifying block; 8. clamping jaw seat; 9. rotating shaft; 10. protection block; 11. rotating shaft. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Figure 1 It is a front structural schematic diagram of a device for automatically clamping and rotating the outside of a barrel section in the present invention; Figure 2 yes Figure 1 For the cross-sectional view in the AA direction, see Figure 1 to Figure 2 As shown, a preferred embodiment is shown, which shows a device for automatically clamping and rotating the outside of a barrel section, including a rotating mechanism 1, an outer ring 2, an inner ring 3, a linear drive mechanism 4, a clamping jaw 5, an elastic member 6 and a force-enhancing block 7. The outer ring 2 is rotatably arranged inside the rotating mechanism 1, one end of the outer ring 2 extends out of the rotating mechanism 1, and a plurality of clamping jaws 5 are arranged at one end of the outer ring 2, and each clamping jaw 5 is respectively provided with an elastic member 6, the linear drive mechanism 4 and the inner ring 3 are arranged in the rotating mechanism 1, and one end of the linear drive mechanism 4 is connected to the inner ring 3, and one end of the inner ring 3 is provided with a force-enhancing block 7, and the force-enhancing block 7 and the clamping jaw 5 are matched by an inclined surface. In this embodiment, the outer ring 2, the inner ring 3 and the linear drive mechanism 4 are all arranged inside the rotating mechanism 1, without occupying additional space, and the force-enhancing block 7 is also arranged inside the rotating mechanism 1, and the force-enhancing block 7 is pushed forward or backward by the linear drive mechanism 4. When the force-enhancing block 7 advances, the inclined surface between the force-enhancing block 7 and the clamping jaw 5 cooperates, which can push the clamping jaw 5 to rotate, solving the problem of insufficient clamping force due to space structure limitations. The larger forward resistance during welding causes the clamping jaw 5 and the workpiece to slip.

[0029] When the force-enhancing block 7 retreats, the force-enhancing block 7 is now separated from the clamping jaw 5, and the clamping jaw 5 can be automatically opened under the action of the elastic member 6, thereby releasing the workpiece. The elastic member 6 is a spring.

[0030] In this embodiment, the inclined surfaces between the clamping jaws 5 and the force-enhancing block 7 are matched to avoid connecting rod drive, thereby increasing the clamping force of the clamping jaws 5 and preventing the workpiece from slipping.

[0031] The inner ring 3 is arranged inside the outer ring 2, and the outer ring 2 is arranged inside the rotating mechanism 1. The inner ring 3 can rotate with the outer ring 2, and the inner ring 3 and the outer ring 2 can move axially relative to each other but cannot rotate.

[0032] Further, as a preferred embodiment, it also includes a clamping jaw seat 8, a plurality of clamping jaw seats 8 are provided at one end of the outer ring 2, the middle part of the clamping jaw 5 is hinged to the clamping jaw seat 8, one end of the elastic member 6 is connected to one end of the clamping jaw 5, and the other end of the elastic member 6 is connected to the clamping jaw seat 8. The clamping jaw seat 8 is welded or integrally connected to the outer ring 2, or connected by bolts, wherein the clamping jaw 5 is connected to the clamping jaw seat 8 by a rotating shaft 11, so that the clamping jaw 5 can rotate, and when the clamping jaw 5 clamps the workpiece, the elastic member 6 will be stretched, and when the force-enhancing block 7 is separated from the clamping jaw 5, the elastic member 6 will shrink, pulling the clamping jaw 5 to open.

[0033] Furthermore, as a preferred embodiment, it also includes a rotating shaft 9, and the other end of the clamp 5 is provided with a rotating shaft 9. Among them, the other end of the clamp 5 is provided with a first inclined surface, one end of the force booster block 7 is connected to the inner ring 3, and the other end of the force booster block 7 is provided with a second inclined surface, and the first inclined surface can contact the second inclined surface. When the force booster block 7 moves forward, the second inclined surface on the force booster block 7 will first contact the rotating shaft 9. At this time, the rotating shaft 9 rolls to reduce the contact friction between the two, which facilitates the movement of the force booster block 7. At the same time, the force booster block 7 pushes the other end of the rotating shaft 9 to rotate, so that the first inclined surface is completely in contact with the second inclined surface. At this time, the rotating shaft 9 is separated from the second inclined surface. In other embodiments, the rotating shaft 9 can be fixed, and it can roll differently when in contact with the second inclined surface, which can also reduce contact friction.

[0034] Further, as a preferred embodiment, the rotating mechanism 1 includes a base 101, a gear ring 102 and a first motor 103. The other end of the outer ring 2 is rotatably arranged in the base 101. The outer edge of one end of the outer ring 2 is provided with a gear ring 102. The base 101 is provided with a first motor 103. The output end of the first motor 103 is meshed with the gear ring 102 through a gear. Figure 1 and Figure 2 As shown, the ring gear 102 is arranged on the outer ring 2, and the gear is driven by the first motor 103 to drive the ring gear 102 to rotate, and the ring gear 102 drives the outer ring 2 to rotate. The outer ring 2 can drive the inner ring 3 to rotate through the linear guide 105, and the first motor 103 is a rotating motor.

[0035] Further, as a preferred embodiment, a first annular guide rail 104 is further included, and a first annular guide rail 104 is provided between one end of the outer ring 2 and the base 101, and the first annular guide rail 104 connects the base 101 and the outer ring 2. A first slider is provided on the first annular guide rail 104, and the first annular guide rail 104 is connected to the base 101, and the first slider is connected to the outer ring 2, so as to facilitate the rotation of the outer ring 2.

[0036] Further, as a preferred embodiment, a linear guide 105 is further included, and a linear guide 105 is provided between the inner ring 3 and the outer ring 2, and the linear guide 105 connects the inner ring 3 and the outer ring 2. A second slider is provided on the linear guide 105, and the linear guide 105 is connected to the outer wall of the inner ring 3, and the second slider is connected to the inside of the outer ring 2. A notch is provided on the outer wall of the inner ring 3, and the linear guide 105 is provided in the notch. This arrangement facilitates the axial movement of the inner ring 3 relative to the outer ring 2.

[0037] Further, as a preferred embodiment, the linear drive mechanism 4 includes a second motor 401 and a second annular guide rail 402. A plurality of second motors 401 are installed in the base 101. The output end of the second motor 401 is provided with a second annular guide rail 402, and the other end of the inner ring 3 is connected to the second annular guide rail 402. A third slider is provided on the second annular guide rail 402, and the second annular guide rail 402 is welded and connected to the output end of the second motor 401. The third slider is connected to the other end of the inner ring 3. The second motor 401 is a servo motor, and the second annular guide rail 402 is driven to move by the second motor 401, thereby driving the inner ring 3 to move. When the inner ring 3 rotates following the outer ring 2, the normal movement of the inner ring 3 will not be affected.

[0038] Furthermore, as a preferred embodiment, a protection block 10 is further included, and a protection block 10 is provided at one end of the clamping jaw 5. The protection block 10 is provided at the end of the clamping jaw 5, and when clamping the workpiece, the protection block 10 can contact the workpiece to protect the workpiece, solve the problem of the clamping jaw 5 damaging the workpiece during the clamping process, and ensure the integrity of the workpiece.

[0039] In this embodiment, the second motor 401 is fixedly connected to the base 101 and does not rotate with it, which can avoid cable entanglement and prevent leakage of liquid and air leakage caused by the entanglement of cables and pipes during the clamping process, resulting in unstable clamping force of the clamp 5. It also solves the problem of leakage contaminating the workpiece and causing the workpiece to be scrapped.

[0040] In this embodiment, the inner ring 3 moves forward and the front clamping jaw 5 moves inward synchronously to clamp, which solves the problem of deformation of the thin-walled cylinder section after installation and ensures that the workpiece is automatically centered and rounded during the clamping process. After clamping, processing and welding can be carried out.

[0041] In this embodiment, the inner ring 3 moves forward and the front clamping jaw 5 moves inward synchronously to clamp. The forward movement of the inner ring 3 is powered by a servo motor. The operation of the servo motor can be controlled by one button on the operation panel of the machine tool, thereby solving the problem of automatic clamping of the workpiece. It is quick and efficient and does not require manual operation to clamp the parts.

[0042] When in use, first place the workpiece at the specified position, then control the servo motor through the external operating panel to drive the inner ring 3 to move, drive the force-enhancing block 7 to push the clamp 5 to rotate, so that the clamp 5 automatically clamps the workpiece. When rotation is required, control the first motor 103 through the operating panel to drive the ring gear 102 to rotate, so that the ring gear 102 drives the outer ring 2 to rotate, and the outer ring 2 drives the workpiece clamped by the clamp 5 to rotate and move. After the processing is completed, the first motor 103 can be controlled to stop working, and then the servo motor is controlled to drive the inner ring 3 to drive the force-enhancing block 7 to return to the initial position, and the clamp 5 automatically rotates under the action of the elastic member 6 and opens outward, thereby releasing the workpiece.

[0043] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for automatically clamping and rotating the outside of a barrel section, characterized in that: It includes a rotating mechanism, an outer ring, an inner ring, a linear driving mechanism, a clamping jaw, an elastic member and a force-enhancing block. The outer ring is rotatably arranged inside the rotating mechanism, one end of the outer ring extends out of the rotating mechanism, a plurality of clamping jaws are arranged at one end of the outer ring, each of the clamping jaws is respectively provided with the elastic member, the linear driving mechanism and the inner ring are arranged in the rotating mechanism, and one end of the linear driving mechanism is connected to the inner ring, one end of the inner ring is provided with the force-enhancing block, and the force-enhancing block and the clamping jaw are matched through an inclined surface.

2. The device for automatically clamping and rotating the outside of a barrel section according to claim 1, characterized in that: It also includes a clamping claw seat, a plurality of clamping claw seats are arranged at one end of the outer ring, the middle part of the clamping claw is hinged to the clamping claw seat, one end of the elastic member is connected to one end of the clamping claw, and the other end of the elastic member is connected to the clamping claw seat.

3. The device for automatically clamping and rotating the outside of a barrel section according to claim 1, characterized in that: It also includes a rotating shaft, and the other end of the clamping jaw is provided with the rotating shaft.

4. The device for automatically clamping and rotating the outside of a barrel section according to claim 3, characterized in that: The other end of the clamp is provided with a first inclined surface, one end of the force amplifying block is connected to the inner ring, and the other end of the force amplifying block is provided with a second inclined surface, and the first inclined surface can contact the second inclined surface.

5. The device for automatically clamping and rotating the outside of a barrel section according to claim 1, characterized in that: The rotating mechanism includes a base, a gear ring and a first motor. The other end of the outer ring is rotatably disposed in the base, the gear ring is disposed on the outer edge of one end of the outer ring, the first motor is disposed on the base, and the output end of the first motor is meshed with the gear ring through a gear.

6. The device for automatically clamping and rotating the outside of a barrel section according to claim 5, characterized in that: It also includes a first annular guide rail, which is arranged between one end of the outer ring and the base, and connects the base and the outer ring.

7. The device for automatically clamping and rotating the outside of a barrel section according to claim 1, characterized in that: It also includes a linear guide rail, which is arranged between the inner ring and the outer ring, and connects the inner ring and the outer ring.

8. The device for automatically clamping and rotating the outside of a barrel section according to claim 5, characterized in that: The linear drive mechanism includes a second motor and a second annular guide rail, a plurality of the second motors are installed in the base, the output end of the second motor is provided with the second annular guide rail, and the other end of the inner ring is connected to the second annular guide rail.

9. The device for automatically clamping and rotating the outside of a barrel section according to claim 1, characterized in that: It also includes a protection block, and one end of the clamping jaw is provided with the protection block.

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