Small-diameter inner hole cladding head

Abstract

The utility model provides a cladding head for a small-diameter inner hole, which relates to the technical field of cladding heads and comprises a cladding head body, a laser emission head is fixedly mounted at one end of the cladding head body, a powder feeding head is fixedly mounted on one side of the laser emission head, two powder inlet pipes are symmetrically and fixedly mounted on the outer surface of the powder feeding head, and a powder outlet pipe is fixedly mounted on the other side of the powder feeding head. According to the powder feeding device, the fixed block and the movable block are arranged, a flexible rubber hose is clamped between the two rubber blocks on the fixed block and the movable block, the movable block is pushed, the flexible rubber hose can be stretched in the moving process of the movable block, and therefore the flexible rubber hose can be fed into the powder feeding head; after the flexible rubber hose enters the inner hole of the workpiece along with the cladding head body, the rubber hose cannot be bent due to the fact that the rubber hose is kept in an extended state, an internal passage of the flexible rubber hose can be prevented from being blocked, metal powder can be continuously fed into the powder feeding head, and normal cladding operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of cladding head technology, and in particular to a small-diameter internal hole cladding head. Background Technology

[0002] A small-diameter internal hole cladding head is a device used for laser cladding processing in internal holes with smaller diameters. Through precise optical and mechanical structure design, it ensures that the laser beam is accurately focused on the surface of the internal hole, achieving high-precision cladding. It is widely used for cladding and repairing the inner wall coatings of workpieces such as molds and hydraulic rods.

[0003] The working principle of the internal hole cladding head is to use a high-energy laser beam emitted by the laser emitter to quickly scan the internal hole, and melt and solidify the pre-made metal powder instantly, forming a strong metallurgical bonding layer in the internal hole. The metal powder is usually transported by components such as fans, which transport the metal powder through rubber to the powder inlet pipe, and then through the powder inlet pipe into the powder feeding head to facilitate the cladding process on the internal hole of the workpiece. However, after the soft rubber tube enters the internal hole of the workpiece with the cladding head, the soft rubber tube itself is relatively soft and is easy to bend. Excessive bending of the soft rubber tube will block the internal passage of the soft rubber tube, thus preventing the metal powder from entering the powder feeding head normally, which will hinder the normal progress of the cladding operation. Utility Model Content

[0004] This invention addresses the problem that the soft rubber tube itself is too soft, and excessive bending of the tube after it enters the inner hole of the workpiece can block the internal passage of the tube, thus preventing metal powder from entering the powder feeding head and hindering the normal progress of the cladding operation. This invention proposes a small-diameter inner hole cladding head.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a small-diameter inner hole cladding head, comprising a cladding head body, a laser emitting head fixedly installed at one end of the cladding head body, a powder feeding head fixedly installed on one side of the laser emitting head, two powder inlet pipes symmetrically fixedly installed on the outer surface of the powder feeding head, the inner wall of the powder inlet pipes communicating with the inner wall of the powder feeding head, a soft rubber tube sleeved on the outer surface of the powder inlet pipes, and an auxiliary device provided between the two soft rubber tubes and the cladding head body, the auxiliary device fixing and stretching the soft rubber tubes by setting a moving block with a rubber block and a fixing block.

[0006] The effect achieved by the above components is as follows: by setting a fixed block and a moving block, the soft rubber tube is inserted between two rubber blocks on the fixed block and the moving block, and the moving block is pushed. During the movement of the moving block, the soft rubber tube will be stretched. After the soft rubber tube enters the inner hole of the workpiece along with the cladding head body, the rubber tube will remain in an extended state and will not bend. This helps to prevent the internal passage of the soft rubber tube from being blocked, so that the metal powder can be continuously fed into the powder feeding head, which facilitates the normal progress of the cladding operation.

[0007] Preferably, the auxiliary device includes a fixed block and a movable block. The fixed block is fixedly installed on the outer surface of the cladding head body and is disposed at one end of the two powder inlet pipes. The movable block is slidably installed on the outer surface of the cladding head body. Two extension plates are symmetrically fixedly installed on one side of both the fixed block and the movable block. A first spring is symmetrically fixedly installed on the side of the two extension plates that are close to each other. The same rubber block is fixedly installed at one end of the two first springs. The soft rubber tube is disposed between the two rubber blocks.

[0008] The effect achieved by the above components is as follows: by setting two rubber blocks and pushing the two rubber blocks to move them away from each other, the first spring is compressed and deformed. Then, the soft rubber tube is inserted between the two rubber blocks on the fixed block and the moving block. When the external force on the rubber blocks is removed, the rubber blocks are displaced under the action of the first spring and clamp the soft rubber tube. The moving block is pushed away from the fixed block. During the movement, the moving block stretches the soft rubber tube until it reaches the appropriate position. After the soft rubber tube enters the inner hole of the workpiece along with the cladding head body, the rubber tube remains in an extended state and will not bend.

[0009] Preferably, the vertical cross-section of the rubber block is an equilateral triangle.

[0010] The effect achieved by the above-mentioned components is as follows: by setting up equilateral triangular rubber blocks, the soft rubber tube is inserted between two rubber blocks and the rubber blocks are pushed. The soft rubber tube abuts against one inclined surface of the rubber block, which applies a horizontal component force to the rubber block, allowing the rubber block to push the first spring, causing the first spring to deform. At the same time, when the soft rubber tube is inserted between the two rubber blocks, the soft rubber tube will no longer cause compression, and the first spring will return to its original position, causing the two rubber blocks to move closer to each other. This allows the other inclined surface of the two rubber blocks to clamp the soft rubber tube, effectively reducing the number of operation steps.

[0011] Preferably, the first spring has a round rod inside, one end of which is fixedly mounted on one side of the rubber block, and the outer surface of the round rod is slidably mounted on the inner wall of the extension plate.

[0012] The effect achieved by the above-mentioned components is that by setting the round rod, the round rod can limit and guide the first spring, which helps to prevent the first spring from bending during deformation.

[0013] Preferably, a circular block is fixedly installed at one end of the circular rod, and the outer diameter of the circular block is larger than the outer diameter of the circular rod.

[0014] The effect achieved by the above components is as follows: by setting the round block, the round block can block one end of the round rod, which helps to prevent the round rod from detaching from the inner wall of the extension plate. At the same time, when one side of the round block abuts against one side of the extension plate, the two rubber blocks can no longer get closer, which helps to prevent the rubber blocks from excessively clamping the soft tube and causing the passage inside the soft tube to be blocked.

[0015] Preferably, a fixing component is provided on one side of the movable block, the fixing component including a threaded pin, the threaded pin being threadedly inserted into the inner wall of the movable block.

[0016] The effect achieved by the above components is as follows: by setting a threaded pin, one end of the threaded pin abuts against the outer surface of the cladding head body, so that the threaded pin can fix the moving block and the cladding head body, which helps to prevent the moving block from shifting and causing the soft tubing to bend.

[0017] Preferably, an operating block is fixedly installed at one end of the threaded pin, a second spring is rotatably installed on one side of the operating block via a bearing, and the other end of the second spring is fixedly installed on one side of the moving block.

[0018] The effect achieved by the above components is as follows: by setting a second spring, the spring has a small stiffness coefficient and almost no resistance to the movement of the operating block. It mainly plays a role in fixing the threaded pin and the moving block, which helps to prevent the threaded pin from dislodging from the moving block. At the same time, the spring and the operating block can rotate to prevent the spring from being damaged when the operating block is rotated.

[0019] Preferably, a rubber strip is adhered to the outer surface of the cladding head body, and the rubber strip is disposed on one side of the moving block.

[0020] The effect achieved by the above components is that by setting the rubber strip, the friction between the threaded pin and the cladding head body can be increased, making the threaded pin more securely fixed to the moving block.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting a fixed block and a movable block, the soft rubber tube is inserted between two rubber blocks on the fixed block and the movable block, and the movable block is pushed. During the movement of the movable block, the soft rubber tube will be stretched. After the soft rubber tube enters the inner hole of the workpiece along with the cladding head body, the rubber tube will remain in an extended state and will not bend. This helps to prevent the internal passage of the soft rubber tube from being blocked, so that the metal powder can be continuously fed into the powder feeding head, which facilitates the normal progress of the cladding operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the auxiliary device of this utility model;

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the fixing component of this utility model;

[0027] Figure 5 This utility model Figure 4 A magnified structural diagram at point B.

[0028] Legend: 1. Cladding head body; 2. Laser emitting head; 3. Powder feeding head; 4. Powder inlet pipe; 5. Flexible rubber tube; 6. Auxiliary device; 61. Fixing block; 62. Moving block; 63. Extension plate; 64. First spring; 65. Rubber block; 66. Round rod; 67. Round block; 7. Fixing component; 71. Threaded pin; 72. Operating block; 73. Second spring; 74. Rubber strip. Detailed Implementation

[0029] Example 1, referring to Figures 1-3As shown, this embodiment discloses a small-diameter inner hole cladding head, including a cladding head body 1. A laser emitting head 2 is fixedly installed at one end of the cladding head body 1, and a powder feeding head 3 is fixedly installed on one side of the laser emitting head 2. Two powder inlet pipes 4 are symmetrically fixedly installed on the outer surface of the powder feeding head 3. The inner wall of the powder inlet pipe 4 is connected to the inner wall of the powder feeding head 3. A soft rubber tube 5 is sleeved on the outer surface of the powder inlet pipe 4. An auxiliary device 6 is provided between the two soft rubber tubes 5 and the cladding head body 1. The auxiliary device 6 uses a moving block 62 with a rubber block 65 and a fixed block 61 to support the soft rubber tubes. 5. Fixing and stretching: By setting a fixing block 61 and a moving block 62, the soft rubber tube 5 is inserted between the two rubber blocks 65 on the fixing block 61 and the moving block 62, and the moving block 62 is pushed. During the movement, the moving block 62 will stretch the soft rubber tube 5. After the soft rubber tube 5 enters the inner hole of the workpiece along with the cladding head body 1, the rubber tube will remain in an extended state and will not bend. This helps to prevent the internal passage of the soft rubber tube 5 from being blocked, so that the metal powder can be continuously fed into the powder feeding head 3, which facilitates the normal operation of the cladding operation.

[0030] Reference Figures 2-5As shown, the auxiliary device 6 includes a fixed block 61 and a movable block 62. The fixed block 61 is fixedly installed on the outer surface of the cladding head body 1 and is located at one end of the two powder inlet pipes 4. The movable block 62 is slidably installed on the outer surface of the cladding head body 1. Two extension plates 63 are symmetrically fixedly installed on one side of both the fixed block 61 and the movable block 62. A first spring 64 is symmetrically fixedly installed on the side of the two extension plates 63 that are close to each other. The same rubber block 65 is fixedly installed at one end of the two first springs 64. A soft rubber tube 5 is located between the two rubber blocks 65. By setting the two rubber blocks 65, pushing the two rubber blocks 65 away from each other will compress the first spring 64, causing the first spring 64 to deform. Then, the soft rubber tube 5 is inserted between the two rubber blocks 65 on the fixed block 61 and the movable block 62. When the external force on the rubber blocks 65 is removed, the rubber blocks 65 will shift under the action of the first spring 64, clamping the soft rubber tube 5 and pushing the movable block 62, causing the movable block 62 to move. Block 62 moves away from fixed block 61. During the movement of block 62, it stretches the soft rubber tube 5 until it reaches the appropriate position. After the soft rubber tube 5 enters the inner hole of the workpiece along with the cladding head body 1, the rubber tube remains in an extended state and will not bend. The vertical cross-section of the rubber block 65 is an equilateral triangle. By setting the equilateral triangle-shaped rubber block 65, the soft rubber tube 5 is inserted between the two rubber blocks 65 and the rubber blocks 65 are pushed. The soft rubber tube 5 abuts against one inclined surface of the rubber block 65, which applies a horizontal component force to the rubber block 65, so that the rubber block 65 can push the first spring 64, causing the first spring 64 to deform. At the same time, when the soft rubber tube 5 enters between the two rubber blocks 65, the soft rubber tube 5 will no longer be squeezed. Then the first spring 64 will return to its original position and drive the two rubber blocks 65 to move closer to each other, so that the other inclined surface of the two rubber blocks 65 can clamp the soft rubber tube 5, which can effectively reduce the operation steps.

[0031] Reference Figures 2-5 As shown, a round rod 66 is provided inside the first spring 64. One end of the round rod 66 is fixedly installed on one side of the rubber block 65, and the outer surface of the round rod 66 is slidably installed on the inner wall of the extension plate 63. By setting the round rod 66, the round rod 66 can limit and guide the first spring 64, which helps to prevent the first spring 64 from bending during deformation. A round block 67 is fixedly installed on one end of the round rod 66. The outer diameter of the round block 67 is larger than the outer diameter of the round rod 66. By setting the round block 67, the round block 67 can block one end of the round rod 66, which helps to prevent the round rod 66 from detaching from the inner wall of the extension plate 63. At the same time, when one side of the round block 67 abuts against one side of the extension plate 63, the two rubber blocks 65 can no longer get closer, which helps to prevent the rubber blocks 65 from excessively clamping the soft rubber tube 5 and blocking the passage inside the soft rubber tube 5.

[0032] Reference Figure 4 and Figure 5 As shown, a fixing component 7 is provided on one side of the movable block 62. The fixing component 7 includes a threaded pin 71, which is threaded into the inner wall of the movable block 62. By setting the threaded pin 71, one end of the threaded pin 71 abuts against the outer surface of the cladding head body 1, so that the threaded pin 71 can fix the movable block 62 and the cladding head body 1, which helps to prevent the movable block 62 from shifting and causing the soft tube 5 to bend.

[0033] Reference Figure 4 and Figure 5 As shown, an operating block 72 is fixedly installed at one end of the threaded pin 71. A second spring 73 is rotatably installed on one side of the operating block 72 via a bearing. The other end of the second spring 73 is fixedly installed on one side of the moving block 62. By setting the second spring 73, the spring coefficient is small, and there is almost no resistance to the movement of the operating block 72. It mainly plays a role in fixing the threaded pin 71 and the moving block 62, which helps to prevent the threaded pin 71 from detaching from the moving block 62. At the same time, the spring and the operating block 72 can rotate to prevent the spring from being damaged when the operating block 72 is rotated. A rubber strip 74 is bonded to the outer surface of the cladding head body 1. The rubber strip 74 is set on one side of the moving block 62. By setting the rubber strip 74, the friction between the threaded pin 71 and the cladding head body 1 can be increased, making the fixing of the threaded pin 71 to the moving block 62 more stable.

[0034] Working principle: The flexible tubing 5 is inserted between the two rubber blocks 65 on the fixed block 61 and the movable block 62 respectively. Pushing the rubber blocks 65 causes the flexible tubing 5 to contact one inclined surface of the rubber block 65, applying a horizontal force. This allows the rubber block 65 to push the first spring 64, causing the first spring 64 to deform. Simultaneously, once the flexible tubing 5 is between the two rubber blocks 65, it no longer compresses the first spring 64, causing it to return to its original position. This pulls the two rubber blocks 65 closer together, allowing the other inclined surface of the two rubber blocks 65 to... The flexible rubber tube 5 is clamped, pushing the moving block 62 away from the fixed block 61. During the movement, the moving block 62 stretches the flexible rubber tube 5 until it reaches the appropriate position. Finally, the operating block 72 is rotated to drive the threaded pin 71 to rotate until one end of the threaded pin 71 abuts against the rubber strip 74 on the outer surface of the cladding head. The threaded pin 71 can then fix the moving block 62 and the cladding head body 1, which helps to prevent the moving block 62 from shifting. After the flexible rubber tube 5 enters the inner hole of the workpiece along with the cladding head body 1, the rubber tube remains in an extended state and will not bend.

Claims

1. A small-diameter internal hole cladding head, comprising a cladding head body (1), characterized in that: A laser emitting head (2) is fixedly installed at one end of the cladding head body (1). A powder feeding head (3) is fixedly installed on one side of the laser emitting head (2). Two powder inlet pipes (4) are symmetrically fixedly installed on the outer surface of the powder feeding head (3). The inner wall of the powder inlet pipe (4) is connected to the inner wall of the powder feeding head (3). A soft rubber tube (5) is sleeved on the outer surface of the powder inlet pipe (4). An auxiliary device (6) is provided between the two soft rubber tubes (5) and the cladding head body (1). The auxiliary device (6) fixes and stretches the soft rubber tube (5) by setting a moving block (62) with a rubber block (65) and a fixed block (61).

2. The small-diameter inner hole cladding head according to claim 1, characterized in that: The auxiliary device (6) includes a fixed block (61) and a movable block (62). The fixed block (61) is fixedly installed on the outer surface of the cladding head body (1) and is located at one end of the two powder inlet pipes (4). The movable block (62) is slidably installed on the outer surface of the cladding head body (1). Two extension plates (63) are symmetrically fixedly installed on one side of both the fixed block (61) and the movable block (62). A first spring (64) is symmetrically fixedly installed on the side of the two extension plates (63) that are close to each other. The same rubber block (65) is fixedly installed at one end of the two first springs (64). The soft rubber tube (5) is located between the two rubber blocks (65).

3. The small-diameter inner hole cladding head according to claim 2, characterized in that: The vertical cross-section of the rubber block (65) is an equilateral triangle.

4. The small-diameter inner hole cladding head according to claim 3, characterized in that: The first spring (64) has a round rod (66) inside. One end of the round rod (66) is fixedly installed on one side of the rubber block (65), and the outer surface of the round rod (66) is slidably installed on the inner wall of the extension plate (63).

5. The small-diameter inner hole cladding head according to claim 4, characterized in that: A circular block (67) is fixedly installed at one end of the circular rod (66), and the outer diameter of the circular block (67) is larger than the outer diameter of the circular rod (66).

6. The small-diameter inner hole cladding head according to claim 2, characterized in that: A fixing component (7) is provided on one side of the movable block (62), the fixing component (7) includes a threaded pin (71), the threaded pin (71) is threaded into the inner wall of the movable block (62).

7. The small-diameter inner hole cladding head according to claim 6, characterized in that: One end of the threaded pin (71) is fixedly mounted with an operating block (72), and a second spring (73) is rotatably mounted on one side of the operating block (72) via a bearing. The other end of the second spring (73) is fixedly mounted on one side of the moving block (62).

8. The small-diameter inner hole cladding head according to claim 6, characterized in that: A rubber strip (74) is bonded to the outer surface of the cladding head body (1), and the rubber strip (74) is disposed on one side of the moving block (62).

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