An automatic line drawing device for rubber hoses

Abstract

The utility model discloses an automatic line drawing equipment for rubber hose belongs to the field of automobile parts processing, including the connecting frame, the inside of connecting frame is provided with the rotating part, the inside of rotating part is provided with first bearing, rotating part passes through first bearing and the rotation connection of connecting shaft, one end of connecting shaft is provided with positioning mechanism, and one end fixed connection of rotating part has the connecting sleeve. The automatic line drawing equipment for rubber hose, through the cooperation of the drive mechanism, positioning mechanism and line drawing mechanism of setting, realized the automation of rubber hose on line drawing process. The equipment can automatically clamp the hose and drive its rotation, and the line drawing pen remains fixed or moves axially, so that the ring or spiral line drawing on the hose surface is completed quickly and accurately. This completely replaces the traditional manual line drawing mode, greatly improves the production efficiency, reduces the labor intensity, and guarantees the consistency of batch product line drawing position and precision.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically an automatic marking device for rubber hoses. Background Technology

[0002] In the automotive manufacturing industry, drainage rubber hoses need to be marked with lines on their surface for installation positioning or length marking.

[0003] Currently, manual marking is commonly used, where operators measure and mark each hose individually using rulers and pens. This traditional method has significant drawbacks: First, manual marking is inefficient and labor-intensive, making it difficult to meet the needs of mass production; second, the position and accuracy of the markings depend entirely on the operator's skill and sense of responsibility, which is prone to errors, leading to poor product consistency and affecting the quality and efficiency of subsequent installations.

[0004] Therefore, this utility model provides an automatic marking device for rubber hoses to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved This utility model provides an automatic marking device for rubber hoses, aiming to solve the problems of low efficiency, high labor intensity, and difficulty in meeting the needs of mass production in the prior art of manual marking; secondly, the position and accuracy of marking depend entirely on the operator's skill and sense of responsibility, which is prone to errors, resulting in poor product consistency and affecting the quality and efficiency of subsequent installation.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an automatic marking device for rubber hoses, comprising a connecting frame, a rotating component inside the connecting frame, a first bearing inside the rotating component, the rotating component being rotatably connected to a connecting shaft via the first bearing, a positioning mechanism at one end of the connecting shaft, a connecting sleeve fixedly connected to one end of the rotating component, a driving mechanism outside the connecting sleeve, and a lifting mechanism at the top of the rotating component, the lifting mechanism being connected to an installation mechanism.

[0007] As a preferred technical solution of this application, the driving mechanism includes a gear ring, which is fixedly connected to the outer wall of the connecting sleeve. A gear is meshed with the outer wall of the gear ring, and a transmission rod is fixedly connected to the inner wall of the gear. One end of the transmission rod is connected to the output end of the first motor.

[0008] As a preferred technical solution of this application, the connecting sleeve is rotatably connected to a support shaft, the bottom of the inner wall of the connecting frame is fixedly connected to a vertical plate, one end of the vertical plate is fixedly connected to the end corresponding to the first motor, one end of the vertical plate is fixedly connected to a bearing seat, the bearing seat is provided with a second bearing inside, and the bearing seat is rotatably connected to the support shaft through the second bearing.

[0009] As a preferred technical solution of this application, the positioning mechanism includes a positioning rod, which is a hollow pipe. The positioning rod has multiple mounting holes inside, and the positioning rod is connected to a guide sleeve through the mounting holes. A moving rod is movably connected to the inner wall of the guide sleeve. A support pad is provided at one end of the moving rod, and the support pad is connected to the guide sleeve by a spring. A second motor is fixedly connected inside the positioning rod, and a rope winder is driven to the output end of the second motor. A connecting rope is provided at one end of the moving rod, and the connecting rope is wound around the outside of the rope winder.

[0010] As a preferred technical solution of this application, the lifting mechanism includes a lifting groove, the rotating component is movably connected to the lifting frame through the lifting groove, and adjustment holes are provided inside the lifting frame and the lifting groove. The lifting groove and the lifting frame are threadedly connected to the threaded rod through the adjustment holes.

[0011] As a preferred technical solution of this application, the installation mechanism includes two L-shaped connecting frames, one end of which is connected to the corresponding end of the lifting frame, and the connection between the two L-shaped connecting frames is provided with a mounting hole. A drawing pen is provided at the connection between the two L-shaped connecting frames, and the inner diameter of the mounting hole is adapted to the outer diameter of the drawing pen. The two L-shaped connecting frames are connected by bolts.

[0012] (III) Beneficial Effects 1. This automatic marking equipment for rubber hoses automates the marking process by coordinating a drive mechanism, a positioning mechanism, and a marking mechanism. The equipment automatically clamps the hose and drives it to rotate, while the marking pen remains fixed or moves axially, thus quickly and accurately marking loops or spirals on the hose surface. This completely replaces traditional manual marking methods, significantly improving production efficiency, reducing labor intensity, ensuring consistency in the marking position and accuracy of batch products, and effectively avoiding human error.

[0013] 2. The automatic marking equipment for this rubber hose employs a positioning mechanism consisting of multiple sets of radial telescopic support assemblies pre-tensioned by springs and driven by a motor. This design adapts to rubber hoses of different diameters, using support pads to internally tighten the hose, ensuring that the hose's central axis coincides with the equipment's rotation center. This effectively prevents the hose from slipping or becoming eccentric during marking, thus guaranteeing the roundness and positional accuracy of the marked lines. This internal support positioning method causes no damage to the hose's outer surface, making it particularly suitable for components with high surface finish requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic marking device for rubber hoses; Figure 2 This is a three-dimensional structural diagram of a connecting shaft in an automatic marking device for rubber hoses; Figure 3 This is a front view structural schematic diagram of a rotating component in an automatic marking device for rubber hoses; Figure 4 This is a three-dimensional structural diagram of a toothed ring in an automatic marking device for rubber hoses; Figure 5 This is a schematic diagram of the overall distribution of the positioning mechanism in an automatic marking device for rubber hoses.

[0015] In the picture: 1. Connecting frame; 2. Rotating component; 3. First bearing; 4. Connecting shaft; 5. Positioning mechanism; 501. Positioning rod; 502. Guide sleeve; 503. Moving rod; 504. Support pad; 505. Spring; 506. Second motor; 507. Rope winder; 508. Connecting rope; 6. Drive mechanism; 601. Gear ring; 602. Gear; 603. Transmission rod; 604. First motor; 7. Lifting mechanism; 701. Lifting groove; 702. Lifting frame; 703. Adjusting hole; 704. Threaded rod; 8. Installation mechanism; 801. L-shaped connecting frame; 802. Drawing pen; 803. Bolt; 9. Vertical plate; 10. Support shaft; 11. Bearing seat; 12. Second bearing; 13. Connecting sleeve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1An automatic marking device for rubber hoses includes a connecting frame 1, a rotating component 2 inside the connecting frame 1, a first bearing 3 inside the rotating component 2, the rotating component 2 being rotatably connected to a connecting shaft 4 via the first bearing 3, a positioning mechanism 5 at one end of the connecting shaft 4, a connecting sleeve 13 fixedly connected to one end of the rotating component 2, a driving mechanism 6 outside the connecting sleeve 13, and a lifting mechanism 7 at the top of the rotating component 2, the lifting mechanism 7 being connected to an installation mechanism 8.

[0018] Please see Figures 2-4 The drive mechanism 6 includes a gear ring 601, which is fixedly connected to the outer wall of the connecting sleeve 13. A gear 602 is meshed with the outer wall of the gear ring 601, and a transmission rod 603 is fixedly connected to the inner wall of the gear 602. One end of the transmission rod 603 is connected to the output end of the first motor 604.

[0019] The connecting sleeve 13 is rotatably connected to a support shaft 10. The bottom of the inner wall of the connecting frame 1 is fixedly connected to a vertical plate 9. One end of the vertical plate 9 is fixedly connected to the end corresponding to the first motor 604. One end of the vertical plate 9 is fixedly connected to a bearing seat 11. A second bearing 12 is provided inside the bearing seat 11. The bearing seat 11 is rotatably connected to the support shaft 10 through the second bearing 12. By setting the bearing seat 11 and the bearing, the support shaft 10 can play an auxiliary support role during rotation, ensuring the stability of the rotation of the support shaft 10. At the same time, it can also reduce the friction generated when the support shaft 10 rotates, ensuring the efficiency of the rotation of the support shaft 10 and avoiding the situation of rotation jamming. At the same time, the support shaft 10 can provide auxiliary support for the rotating part 2, ensuring the stability of the rotation of the rotating part 2.

[0020] Please see Figure 5The positioning mechanism 5 includes a positioning rod 501, which is a hollow pipe. Multiple mounting holes are provided inside the positioning rod 501. The positioning rod 501 is connected to a guide sleeve 502 through these mounting holes. A moving rod 503 is movably connected to the inner wall of the guide sleeve 502. A support pad 504 is provided at one end of the moving rod 503. The support pad 504 is connected to the guide sleeve 502 via a spring 505. A second motor 506 is fixedly connected inside the positioning rod 501. A rope winder 507 is driven to the output end of the second motor 506. A connecting rope 508 is provided at one end of the moving rod 503 and is wound around the outside of the rope winder 507. The positioning mechanism 5 uses a radial tightening method from the inside of the hose. Multiple circumferentially evenly distributed support pads 504 move outward synchronously under the pressure of the spring 505, ensuring uniform force on the hose wall and automatically adjusting the central axis of the hose to coincide with the main shaft of the equipment, achieving perfect automatic centering. This "internal support" clamping force is evenly distributed, avoiding localized stress concentration and ensuring that the hose does not deform during the line drawing process. It also clamps the hose's soft outer surface without damage, making it particularly suitable for rubber hoses requiring high surface finish. The retraction of the support pad 504 is controlled by the same second motor 506 via the rope winder 507 and connecting rope 508. This "single-point drive, multi-point linkage" mechanism ensures the synchronous displacement of all moving rods 503, fundamentally preventing hose skewing caused by uneven clamping force. During the line drawing process, as the hose rotates at high speed with the rotating component 2, the internal support provides significant friction, effectively preventing relative slippage between the hose and the positioning mechanism 5, thus ensuring absolute accuracy of the line position and the continuity of the lines. Simultaneously, the positioning mechanism 5 has excellent adaptability. By replacing the moving rod 503 or support pad 504 with different lengths and adjusting the preload of the spring 505, the positioning mechanism 5 can be adapted to rubber hoses of different diameters and wall thicknesses within a certain range, greatly improving the versatility and application range of the equipment and reducing the cost and time of changing models for different product specifications.

[0021] Please see Figure 2 The lifting mechanism 7 includes a lifting groove 701. The rotating component 2 is movably connected to the lifting frame 702 through the lifting groove 701. The lifting groove 701 and the lifting frame 702 are fitted with a matching sliding fit, forming a highly rigid kinematic pair. This ensures that the lifting frame 702 will not sway or tilt during the lifting process and will always move smoothly in the vertical direction. Adjustment holes 703 are provided inside the lifting frame 702 and the lifting groove 701. The lifting groove 701 and the lifting frame 702 are threadedly connected to the threaded rod 704 through the adjustment holes 703. The threaded rod 704 itself has a self-locking characteristic. Once adjusted to the correct position, the lifting frame 702 can be firmly locked at the required height without any additional locking device, effectively avoiding pen tip displacement caused by vibration during the drawing process and ensuring ultra-high repeatability accuracy of the drawing radius.

[0022] Please see Figure 2 and Figure 3 The mounting mechanism 8 includes two L-shaped connecting brackets 801. One end of one L-shaped connecting bracket 801 is connected to the corresponding end of the lifting frame 702. A mounting hole is provided at the connection point of both L-shaped connecting brackets 801. A drawing pen 802 is installed at the connection point of the two L-shaped connecting brackets 801. The inner diameter of the mounting hole matches the outer diameter of the drawing pen 802. The two L-shaped connecting brackets 801 are assembled and connected by bolts 803. The mounting mechanism 8 adopts a split design, consisting of two L-shaped connecting brackets 801 combined by bolts 803. When it is necessary to replace the drawing pen 802, simply loosen the bolts 803 to open the clamping unit, remove the old pen, insert the new pen, and then tighten the bolts 803. The entire process takes only a few seconds, enabling rapid replacement of the drawing pen 802 and minimizing equipment downtime. The mounting hole formed by the two L-shaped connectors 801 ensures that the drawing pen 802 is always in the preset center position when it is clamped, realizing automatic centering and avoiding the tedious step of recalibrating the position every time the pen is replaced.

[0023] The rubber hose to be marked is fitted onto the positioning rod 501 of the positioning mechanism 5. The control system starts the second motor 506, which, through the transmission of the rope winder 507 and the connecting rope 508, causes each moving rod 503 to retract inward against the elastic force of the spring 505, making room. After the hose is inserted, the second motor 506 reverses to release the connecting rope 508, and each moving rod 503 is pushed outward under the action of the spring 505, and is evenly tightened from the inside of the rubber hose by the support pad 504, completing automatic centering and clamping.

[0024] Next, adjust the height of the drawing pen 802 so that the pen tip contacts the surface of the hose with appropriate pressure, and start the first motor 604 of the drive mechanism 6. The power of the first motor 604 is transmitted to the gear ring 601 via the gear 602, causing the connecting sleeve 13 fixed to the gear ring 601 and the rotating part 2 to rotate together. Since the positioning mechanism 5 is fixed on the rotating part 2, the clamped rubber hose rotates at a uniform speed. At this time, the position of the drawing pen 802 is fixed, and a clear circular line can be drawn on the outer surface of the rotating hose. After the line is drawn, the equipment stops operating, the hose is released and removed.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic marking device for rubber hoses, comprising a connecting frame (1), characterized in that: The connecting frame (1) is provided with a rotating component (2), and the rotating component (2) is provided with a first bearing (3). The rotating component (2) is rotatably connected to the connecting shaft (4) through the first bearing (3). One end of the connecting shaft (4) is provided with a positioning mechanism (5). One end of the rotating component (2) is fixedly connected with a connecting sleeve (13). The outside of the connecting sleeve (13) is provided with a driving mechanism (6). The top of the rotating component (2) is provided with a lifting mechanism (7). The lifting mechanism (7) is connected to the installation mechanism (8).

2. The automatic marking device for rubber hoses according to claim 1, characterized in that: The drive mechanism (6) includes a gear ring (601), which is fixedly connected to the outer wall of the connecting sleeve (13). A gear (602) is meshed with the outer wall of the gear ring (601), and a transmission rod (603) is fixedly connected to the inner wall of the gear (602). One end of the transmission rod (603) is connected to the output end of the first motor (604).

3. An automatic marking device for rubber hoses according to claim 2, characterized in that: The connecting sleeve (13) is rotatably connected to a support shaft (10). The bottom of the inner wall of the connecting frame (1) is fixedly connected to a vertical plate (9). One end of the vertical plate (9) is fixedly connected to the end corresponding to the first motor (604). One end of the vertical plate (9) is fixedly connected to a bearing seat (11). The bearing seat (11) is provided with a second bearing (12). The bearing seat (11) is rotatably connected to the support shaft (10) through the second bearing (12).

4. An automatic marking device for rubber hoses according to claim 1, characterized in that: The positioning mechanism (5) includes a positioning rod (501), which is a hollow pipe. The positioning rod (501) has multiple mounting holes inside. The positioning rod (501) is connected to the guide sleeve (502) through the mounting holes. A moving rod (503) is movably connected to the inner wall of the guide sleeve (502). A support pad (504) is provided at one end of the moving rod (503). The support pad (504) is connected to the guide sleeve (502) through a spring (505). A second motor (506) is fixedly connected inside the positioning rod (501). A rope winder (507) is driven to the output end of the second motor (506). A connecting rope (508) is provided at one end of the moving rod (503). The connecting rope (508) is wound around the outside of the rope winder (507).

5. An automatic marking device for rubber hoses according to claim 1, characterized in that: The lifting mechanism (7) includes a lifting groove (701). The rotating part (2) is movably connected to the lifting frame (702) through the lifting groove (701). Adjustment holes (703) are provided inside the lifting frame (702) and the lifting groove (701). The lifting groove (701) and the lifting frame (702) are threadedly connected to the threaded rod (704) through the adjustment holes (703).

6. An automatic marking device for rubber hoses according to claim 5, characterized in that: The installation mechanism (8) includes two L-shaped connecting brackets (801), one end of which is connected to the corresponding end of the lifting frame (702). The connection between the two L-shaped connecting brackets (801) is provided with a mounting hole. A drawing pen (802) is provided at the connection between the two L-shaped connecting brackets (801). The inner diameter of the mounting hole is adapted to the outer diameter of the drawing pen (802). The two L-shaped connecting brackets (801) are assembled and connected by bolts (803).

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