A double stroke chuck drive mechanism

Abstract

This utility model discloses a double-stroke chuck drive mechanism, relating to the field of drive mechanism technology. It includes a large chuck disc and a panel, with the panel placed on the front side of the large chuck disc. A cylinder is fixedly mounted on the large chuck disc. A lower rack and two guide rails are fixedly mounted on the upper part of the cylinder, with the lower rack located between the two guide rails. A sliding seat is placed on the upper part of the cylinder, and an upper rack and two sliders are fixedly mounted on the lower part of the sliding seat, with the upper rack located between the two sliders. Utilizing the principle of a gear and rack "double-speed mechanism," the stroke ratio between the cylinder piston rod and the roller is 1:2, achieving a double-stroke effect. This design allows the chuck to have a larger clamping range for the workpiece, and eliminates the need for a longer cylinder on the chuck. The outer diameter of the chuck does not need to be increased, thus not increasing the chuck's rotational inertia. Furthermore, while increasing the workpiece clamping stroke, the chuck's rotational speed is not affected.

Description

Technical Field

[0001] This utility model relates to the field of drive mechanism technology, and in particular to a double-stroke chuck drive mechanism. Background Technology

[0002] A chuck is used to clamp workpieces during the cutting process. In existing technology, the chuck clamps the workpiece using rollers, which are driven by a piston rod of a cylinder (refer to prior art CN111673103A). The stroke ratio of the cylinder piston rod to the roller is 1:1, meaning that for every 10 cm the cylinder piston rod extends outward, the roller also extends inward by 10 cm. When it is necessary to increase the workpiece clamping stroke, a longer piston rod is required, which necessitates designing a longer cylinder. However, as the cylinder length increases, the outer diameter of the chuck also needs to increase, thereby increasing the chuck's moment of inertia and affecting its rotational speed.

[0003] Modern laser tube cutting machines typically use full-stroke chucks, with a clamping range of 10-100cm. A single cylinder action allows the rollers to cover the entire movement range from 10cm to 100cm, accommodating workpieces of 20cm or 80cm in length and reducing the hassle of roller adjustments for customers. However, full stroke means the cylinder's stroke must be sufficiently large. For example, a clamping range of 10-100cm requires a cylinder stroke of 45cm, necessitating a large chuck rotation diameter. This results in a high moment of inertia for the chuck, placing higher demands on the reducer motor and reducing chuck rotation agility, thus impacting cutting efficiency. Utility Model Content

[0004] The purpose of this application is to provide a double-stroke chuck drive mechanism that, by utilizing the principle of a gear and rack "speed doubling mechanism", makes the stroke of the roller twice the stroke of the cylinder, thus ensuring the full stroke of the roller clamping while minimizing the chuck's rotational diameter and reducing rotational inertia.

[0005] To achieve the above objectives, this application provides the following technical solution: a double-stroke chuck drive mechanism, comprising a chuck disc and a panel, the panel being placed on the front side of the chuck disc, a cylinder being fixedly mounted on the chuck disc, a lower rack and two guide rails being fixedly mounted on the upper part of the cylinder, the lower rack being located between the two guide rails, a sliding seat being placed on the upper part of the cylinder, an upper rack and two sliders being fixedly mounted on the lower part of the sliding seat, the upper rack being located between the two sliders, the sliding seat being slidably mounted on the two guide rails via the two sliders, a push seat being fixedly mounted on the piston rod of the cylinder, a gear being rotatably mounted on the push seat, the lower rack and upper rack being located on opposite sides of the gear, and both the lower rack and upper rack meshing with the gear, an elongated clamping hole being provided on the panel, a clamping column being fixedly mounted on the upper part of the sliding seat, a roller frame being fixedly mounted after the upper end of the clamping column passes through the clamping hole, and rollers being mounted on the roller frame.

[0006] Furthermore, the cylinder is a double-cylinder cylinder.

[0007] Furthermore, a clamping groove is fixedly installed on the panel, and an elongated sliding hole corresponding to the clamping hole is opened at the lower part of the clamping groove, through which the clamping column passes.

[0008] Furthermore, a clamping slider is slidably installed inside the clamping groove, and the roller frame is fixedly installed on the upper part of the clamping slider.

[0009] Furthermore, the upper part of the push seat is provided with a rack groove that matches the upper rack, and the front side of the push seat is provided with a rack hole that matches the lower rack.

[0010] In summary, the technical effects and advantages of this utility model are as follows:

[0011] In this invention, by utilizing the principle of a gear and rack "speed doubling mechanism", the stroke ratio between the cylinder piston rod and the roller is 1:2, thereby achieving the effect of double the stroke. This design allows the chuck to have a larger clamping range for the workpiece, and it eliminates the need to install a longer cylinder on the chuck. The outer diameter of the chuck does not need to be increased, so the rotational inertia of the chuck will not be increased. Furthermore, while increasing the workpiece clamping stroke, the rotational speed of the chuck will not be affected. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a double-stroke chuck drive mechanism according to an embodiment of this application;

[0014] Figure 2This is a diagram showing the positional relationship between the cylinder, guide rail, sliding seat, and roller frame in the embodiments of this application;

[0015] Figure 3 Examples of embodiments in this application Figure 2 Another perspective view;

[0016] Figure 4 This is a diagram showing the positional relationship between the cylinder, guide rail, sliding seat, and slider in the embodiments of this application;

[0017] Figure 5 This is a diagram showing the positional relationship between the lower rack, upper rack, push seat, and gear in an embodiment of this application.

[0018] In the diagram: 1. Chuck plate; 2. Panel; 3. Cylinder; 4. Guide rail; 5. Lower rack; 6. Sliding seat; 7. Slider; 8. Upper rack; 9. Push seat; 10. Gear; 11. Clamping hole; 12. Clamping column; 13. Clamping groove; 14. Sliding hole; 15. Clamping slider; 16. Roller frame; 17. Roller; 18. Rack groove; 19. Rack hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example: Reference Figure 1-5 The double-stroke chuck drive mechanism shown includes a chuck plate 1 and a panel 2. The panel 2 is placed on the front side of the chuck plate 1. A cylinder 3 is fixedly mounted on the chuck plate 1. A lower rack 5 and two guide rails 4 are fixedly mounted on the upper part of the cylinder 3, with the lower rack 5 located between the two guide rails 4. A sliding seat 6 is placed on the upper part of the cylinder 3. An upper rack 8 and two sliders 7 are fixedly mounted on the lower part of the sliding seat 6, with the upper rack 8 located between the two sliders 7. The sliding seat 6 is slidably mounted on the two guide rails 4 via the two sliders 7. A pusher 9 is fixedly mounted on the piston rod of the cylinder 3, pushing... A gear 10 is rotatably mounted on the seat 9. The lower rack 5 and the upper rack 8 are located on both sides of the gear 10, and both the lower rack 5 and the upper rack 8 mesh with the gear 10. A long strip-shaped clamping hole 11 is opened on the panel 2. A clamping column 12 is fixedly mounted on the upper part of the sliding seat 6. The upper end of the clamping column 12 passes through the clamping hole 11 and is fixedly mounted on the roller frame 16. Rollers 17 are mounted on the roller frame 16. The workpiece is clamped by the rollers 17. The cylinder 3 is a double cylinder, which can improve the clamping force of the rollers 17 and push the rollers 17 more smoothly.

[0021] When the piston rod of cylinder 3 extends, the piston rod drives the push seat 9, and the push seat 9 drives the gear 10 to move along the lower rack 5 towards the center of the chuck. While the gear 10 is moving, it drives the upper rack 8 to move in the same direction. The upper rack 8 simultaneously drives the sliding seat 6, the clamping column 12 and the roller frame 16 to move, thereby clamping the workpiece.

[0022] Based on the principle of the gear and rack "speed doubling mechanism", the stroke ratio of the piston rod of cylinder 3 to the upper rack 8 is 1:2. That is, the stroke of the piston rod of cylinder 3 is 10cm, and the stroke of the upper rack 8 is 20cm. The piston rod of cylinder 3 only needs a stroke of 10cm to drive the roller frame 16 and roller 17 to a stroke of 20cm, so as to achieve the effect of double stroke. This design allows for a larger clamping range for the workpiece, and does not require a longer cylinder 3. The outer diameter of the chuck does not need to be increased, so the rotational inertia of the chuck will not be increased, and the rotational speed of the chuck will not be affected.

[0023] Among them, a clamping groove 13 is fixedly installed on the panel 2, and a long strip sliding hole 14 corresponding to the clamping hole 11 is opened at the lower part of the clamping groove 13. The clamping column 12 passes through the sliding hole 14. A clamping slider 15 is slidably installed inside the clamping groove 13, and a roller frame 16 is fixedly installed on the upper part of the clamping slider 15.

[0024] The clamping slider 15 drives the roller frame 16 to move along the clamping groove 13. By setting the clamping groove 13 and the clamping slider 15, the movement of the roller frame 16 can be guided, preventing the roller 17 from deviating when clamping the workpiece.

[0025] The upper part of the push seat 9 is provided with a rack groove 18 that is adapted to the upper rack 8, which is used to provide space for the upper rack 8 to move. The front side of the push seat 9 is provided with a rack hole 19 that is adapted to the lower rack 5, which is used to provide space for the lower rack 5 to move.

[0026] Working principle of this utility model:

[0027] By utilizing the principle of the gear and rack "speed doubling mechanism", the stroke ratio of the piston rod of cylinder 3 to roller 17 is 1:2 to achieve the effect of double stroke. This design allows the chuck to have a larger clamping range for the workpiece, and it does not require the installation of a longer cylinder 3 on the chuck. The outer diameter of the chuck does not need to be increased, so the rotational inertia of the chuck will not be increased. Moreover, while increasing the workpiece clamping stroke, the rotational speed of the chuck will not be affected.

[0028] The following objectives are achieved: while minimizing the rotational inertia of the chuck, the cylinder 3 is driven by the speed multiplier mechanism to drive the roller 17 to its full stroke with a smaller stroke.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double stroke chuck drive mechanism comprising a chuck platter (1) and a face plate (2) placed on the front side of the chuck platter (1), characterized in that: A cylinder (3) is fixedly mounted on the chuck plate (1). A lower rack (5) and two guide rails (4) are fixedly mounted on the upper part of the cylinder (3). The lower rack (5) is located between the two guide rails (4). A sliding seat (6) is placed on the upper part of the cylinder (3). An upper rack (8) and two sliders (7) are fixedly mounted on the lower part of the sliding seat (6). The upper rack (8) is located between the two sliders (7). The sliding seat (6) is slidably mounted on the two guide rails (4) through the two sliders (7). A push rod is fixedly mounted on the piston rod of the cylinder (3). The moving seat (9) has a gear (10) rotatably mounted on it. The lower rack (5) and the upper rack (8) are located on both sides of the gear (10), and both the lower rack (5) and the upper rack (8) mesh with the gear (10). The panel (2) has a long strip-shaped clamping hole (11). The upper part of the sliding seat (6) is fixedly mounted with a clamping column (12). The upper end of the clamping column (12) passes through the clamping hole (11) and is fixedly mounted with a roller frame (16). The roller frame (16) is mounted with a roller (17).

2. A double stroke chuck drive mechanism according to claim 1, wherein: The cylinder (3) is a double cylinder.

3. A double stroke chuck drive mechanism as defined in claim 1 wherein: A clamping groove (13) is fixedly installed on the panel (2). The lower part of the clamping groove (13) is provided with an elongated sliding hole (14) corresponding to the clamping hole (11). The clamping column (12) passes through the sliding hole (14).

4. A double stroke chuck drive mechanism according to claim 3, wherein: The clamping groove (13) has a clamping slider (15) slidably installed inside, and the roller frame (16) is fixedly installed on the upper part of the clamping slider (15).

5. A double stroke chuck drive mechanism as claimed in claim 1, wherein: The upper part of the push seat (9) is provided with a rack groove (18) that matches the upper rack (8), and the front side of the push seat (9) is provided with a rack hole (19) that matches the lower rack (5).

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