A type of pneumatic chuck

Abstract

This utility model relates to the field of pneumatic chuck technology and discloses a pneumatic chuck, including a drive mechanism, which includes a support and a positioning rod that moves on a tubular track; and a cylinder connected to the support, wherein a central shaft inside the cylinder is mounted in a through chamber that also moves on the tubular track and drives the positioning rod to adjust its position; and a locking mechanism, which includes an outer sleeve fitted around the positioning rod and rotatably fixed to the cylinder, and the surface of the outer sleeve is provided with a toothed ring that is driven to rotate by a servo motor. The central shaft moves to drive the positioning rod to move, and the inclined block drives the protruding block to rise and fall in the movable slot, thereby allowing several protruding blocks to rise and fall to complete the locking and fixing of the pipe. Compared with the prior art, this device has a better locking and fixing effect on the pipe, is less prone to loosening, and ensures that the pipe can continue to complete the rotational cutting operation.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic chuck technology, specifically a pneumatic chuck for medium-sized cylinders. Background Technology

[0002] When cutting pipes, an outward-convex chuck is needed to move the pipe to a fixed point and rotate it at the cutter to complete the fixed-length cutting and material pushing. However, traditional chucks have poor fastening and insufficient lifting force on the inner wall of the pipe, which can cause the pipe to loosen and affect the actual cutting effect. Therefore, a hollow pneumatic chuck is needed to solve the above problems. Utility Model Content

[0003] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a pneumatic chuck to solve the problem mentioned in the background art that when cutting pipes, it is necessary to use an outwardly convex chuck to drive the pipe to move at a fixed point and rotate at the cutter to complete the fixed-length cutting and material pushing. However, traditional chucks have poor fastening and insufficient lifting force on the inner wall of the pipe, resulting in pipe loosening and affecting the actual cutting effect.

[0004] This utility model provides the following technical solution: a pneumatic chuck, including a drive mechanism, the drive mechanism including a support and a positioning rod that moves on a tubular track;

[0005] In addition, the cylinder body connected to the support, the central shaft inside the cylinder body is mounted on a through chamber and also moves on a tubular track, driving the positioning rod to adjust its position;

[0006] It also includes a locking mechanism, which includes an outer sleeve that is fitted around the outside of the positioning rod and rotatably fixed to the cylinder body, and the surface of the outer sleeve is provided with a toothed ring that is driven to rotate by a servo motor.

[0007] Additionally, a movable slot is formed in a ring shape on the outer sleeve, a protruding block is placed in the movable slot, and an inclined block connected to the positioning rod is placed in the inclined groove of the protruding block to realize the lifting and lowering of the protruding block.

[0008] To achieve the above technical solution, the central shaft frame moves to drive the positioning rod, which in turn drives the inclined block to move the protruding block up and down in the movable slot. This allows several protruding blocks to move up and down to complete the locking and fixing of the pipeline. Compared with the existing technology, this device has a better locking and fixing effect on the pipeline, is less prone to loosening, and ensures that the pipeline can continue to complete the rotational cutting operation.

[0009] As a further improvement to this utility model, a first fixed seat is connected to the end of the central shaft frame, and a second fixed seat that is sleeved with the positioning rod bearing is fixed on the first fixed seat by bolts, so that the end of the positioning rod does not come into contact with the end of the central shaft frame.

[0010] The above technical solution improves the responsiveness and stability of the positioning rod and the central shaft.

[0011] As a further improvement to this utility model, the end of the outer sleeve is bolted with a protruding block, and the positioning rod extends into the central hole of the protruding block.

[0012] The above technical solution increases the stability of the outer sleeve located outside the positioning rod.

[0013] As a further improvement to this utility model, the number of the movable slots is at least three, and they are evenly distributed along the center line of the X-axis of the outer sleeve.

[0014] The above technical solution makes the distribution of the protruding blocks more reasonable and ensures clamping stability.

[0015] As a further improvement to this utility model, the lifting surface of the protruding block is provided with anti-slip texture.

[0016] The above technical solution improves the anti-slip effect between the lifting surface of the protruding block and the inner wall of the pipe.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model uses a central shaft frame to move and drive the positioning rod to move, which in turn drives the convex block to rise and fall in the movable slot, so that several convex blocks can rise and fall to complete the locking and fixing of the pipe.

[0019] 2. Compared with the prior art, this device has a better effect on fixing the pipe and is less prone to loosening, ensuring that the pipe can continue to complete the rotation and cutting operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top-view perspective view of the overall structure of this utility model.

[0022] Figure 2 This is a bottom-view perspective view of the overall structure of this utility model.

[0023] Figure 3 This is a top-view perspective view of the cylinder structure of this utility model in an exploded state.

[0024] Figure 4This is a top-view perspective view of the exploded state of the positioning mechanism structure of this utility model.

[0025] The names represented by the part numbers in the above diagram are as follows:

[0026] 100. Drive mechanism; 110. Cylinder block; 111. Central shaft support; 112. Positioning rod; 113. First fixed seat; 114. Second fixed seat; 115. Support; 200. Locking mechanism; 210. Outer sleeve; 211. Movable slot; 212. Protruding block; 213. Angled block; Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example:

[0029] Referring to the accompanying drawings, this utility model provides a pneumatic chuck for automatic centering, clamping, and rotary cutting of pipes in pipe cutting equipment. Its core structure and working process are as follows:

[0030] In drive mechanism 100:

[0031] The support 115 is made of cast iron and is located next to the tubular track of the pipe cutting equipment to support the cylinder 110 and the auxiliary fixing components of the outer sleeve 210.

[0032] The cylinder body 110 is a horizontally placed pneumatic cylinder. The internal central shaft frame 111 moves axially along the tubular track, driving the positioning rod 112 to move synchronously. The first fixed seat 113 is fixed to the end bolt of the central shaft frame 111.

[0033] The positioning rod 112 and the central shaft frame 111 are on the same tubular track and are connected to the second fixed seat 114 through the bearing. At the same time, the second fixed seat 114 is connected to the first fixed seat 113 by the connecting bolt, so that the distance between the end of the positioning rod 112 and the end of the central shaft frame 111 is 5-10mm (to avoid direct contact that may cause jamming).

[0034] In the positioning mechanism 200:

[0035] The outer sleeve 210 is located at the front end of the cylinder block 110 (rotational accuracy ±0.05mm), and a toothed ring is machined on its surface (meshing with the output gear of the servo motor to drive the outer sleeve 210 to rotate). At the same time, the toothed ring of the outer sleeve 210 is rotatably mounted on the auxiliary fixing assembly (located on the support 115) via a bearing.

[0036] There are three movable slots 211 (evenly distributed along the X-axis centerline of the outer sleeve 210). The slots have built-in protruding blocks 212 (which fit the slot with a clearance). The lifting surface of the protruding block 212 is arc-shaped (the curvature matches the inner diameter of the pipe), and the surface has anti-slip texture. The inclined block 213 is fixed to the end of the positioning rod 112. Its top is inclined and slides with the inclined groove of the protruding block 212 (matching the angle of the inclined surface). The protruding block 212 is pushed up and down by the forward movement of the positioning rod 112.

[0037] The specific workflow is as follows:

[0038] Inlet tube and centering clamp

[0039] Initial positioning: The device moves along the tubular track of the pipe cutting equipment to the foremost cutting blade, and the external pipe feeding device inserts one end of the pipe into the area of ​​the protruding block 212 (the inner diameter of the pipe is larger than the initial outer diameter of the protruding block 212);

[0040] Pneumatic drive: The cylinder 110 chamber is filled with air, and the central shaft 111 drives the first fixed seat 113, the second fixed seat 114 and the positioning rod 112 to move forward;

[0041] Radial lifting: The inclined block 213 slides in the inclined groove of the convex block 212, pushing the three convex blocks 212 to rise synchronously from the movable slot 211 until they contact and limit the inner wall of the pipe (ensuring no slippage), thus completing the pipe centering.

[0042] Pipeline dragging and feeding

[0043] Overall dragging in: After clamping is completed, the device moves backward along the tubular track and drags the entire pipe into the pipe cutting equipment (the dragging length is set according to the fixed-length cutting requirements);

[0044] Fixed-length feeding: The device moves in the opposite direction, driving the pipe forward along the track to below the cutter, and the cutter descends to the cutting position.

[0045] Rotary cutting and discharge

[0046] Rotary drive: The servo motor drives the outer sleeve 210 to rotate via the gear ring, causing the pipe to rotate synchronously, and the cutter descends to complete the pipe cutting;

[0047] Continuous operation: After the cutting is completed, the device continues to move forward, pushing the cut pipe section to the discharge port, while driving the remaining pipe forward so that the next cutting position is aligned with the cutter, and the cutting process is repeated.

[0048] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A pneumatic chuck, characterized in that: It includes a drive mechanism (100), which includes a support (115) and a positioning rod (112) that moves on a tubular track; In addition, the cylinder (110) connected to the support (115) has a central shaft frame (111) inside the cylinder (110) that also moves on the tubular track and drives the positioning rod (112) to adjust its position. It also includes a positioning mechanism (200), which includes an outer sleeve (210) sleeved on the outside of the positioning rod (112) and rotatably fixed on the cylinder body (110), and the surface of the outer sleeve (210) is provided with a toothed ring, which is driven to rotate by a servo motor. In addition, a movable slot (211) is provided in a ring shape on the outer sleeve (210), a protruding block (212) is placed in the movable slot (211), and an inclined block (213) connected to the positioning rod (112) is placed in the inclined groove of the protruding block (212) to realize the lifting and lowering of the protruding block (212).

2. The pneumatic chuck according to claim 1, characterized in that: The end of the central shaft frame (111) is connected to a first fixed seat (113), and a second fixed seat (114) that is sleeved with the positioning rod (112) is fixed on the first fixed seat (113) by bolts, so that the end of the positioning rod (112) does not come into contact with the end of the central shaft frame (111).

3. A pneumatic chuck according to claim 1, characterized in that: The end of the outer sleeve (210) is bolted to a protruding block (212), and the positioning rod (112) extends into the central hole of the protruding block (212).

4. A pneumatic chuck according to claim 1, characterized in that: The number of the movable slots (211) is at least three, and they are evenly distributed along the X-axis centerline of the outer sleeve (210).

5. A pneumatic chuck according to claim 4, characterized in that: The lifting surface of the protruding block (212) is provided with anti-slip texture.

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