Silent long-service-life cloth spreading mechanism for cloth spreading machine

Abstract

The invention relates to the technical field of machinery. A mute long-service-life cloth spreading mechanism for a cloth spreading machine is characterized in that guide rails which are symmetrically arranged front and back are included, the guide rails are C-shaped profiles, each guide rail comprises an upper limiting part and a lower limiting part, and the upper limiting parts and the lower limiting parts are connected through connecting parts; the cloth spreading device further comprises a sliding assembly sliding left and right, the sliding assembly comprises a supporting frame, a movable clamp used for clamping linen is installed on the supporting frame, roller frames are symmetrically installed on the front side and the rear side of the supporting frame in the radial direction, and cloth spreading wheel sets are installed on the roller frames and comprise movable rubber wheels, upper limiting wheels and front and rear limiting wheels. The central axes of the movable rubber wheel and the upper limiting wheel are parallel to each other, and the central axes of the front and rear limiting wheels are vertical; the movable rubber wheel rolls on the upper side of the lower limiting part; a micro-motion gap is formed between the upper limiting wheel and the upper limiting part; and a micro-motion gap is formed between the front and rear limiting wheels and the connecting part. The service life of the rubber wheel is prolonged, shearing force is reduced, and the service life of the mechanism is prolonged.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, specifically to a spreading mechanism. Background Technology

[0002] Regarding the spreading mechanism of spreading machines, most spreading machines on the market exhibit noticeable abnormal noises and shaking after six months of operation. As time progresses, these noises and shaking become more pronounced, and some components may even undergo plastic deformation, affecting the spreading effect.

[0003] It is known that ordinary bearings can withstand radial forces much greater than axial forces. Existing fabric spreading mechanisms use symmetrically arranged guide rails, with two sets of U-shaped rubber wheels mounted opposite each other to fix the fabric spreading clamp on the rails, allowing it to move left and right. This mechanism does allow the fabric spreading clamp to operate normally within the rails. However, analysis of its structure and operation reveals that during fabric spreading, the rubber wheels change from being subjected to radial forces to being subjected to both axial and radial forces simultaneously. This force distribution significantly reduces the mechanism's lifespan. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a silent, long-life fabric spreading mechanism for a fabric spreading machine, thereby solving at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a silent and long-life fabric spreading mechanism for a fabric spreading machine, characterized in that it includes guide rails symmetrically arranged front and rear, the guide rails being C-shaped profiles with openings facing outwards, and the guide rails including an upper limit part and a lower limit part arranged side by side, the upper limit part and the lower limit part being connected by a connecting part;

[0006] It also includes a sliding assembly that slides left and right on the guide rail. The sliding assembly includes a support frame, on which a movable clamp for holding linens is installed. Roller frames are radially symmetrically installed on the front and rear sides of the support frame. A fabric spreading wheel assembly is installed on the roller frames. The fabric spreading wheel assembly includes a movable rubber wheel, an upper limit wheel, and front and rear limit wheels.

[0007] The central axes of the movable rubber wheel and the upper limit wheel are parallel to each other, and the central axis of the front and rear limit wheels is in the vertical direction.

[0008] The movable rubber wheel rolls on the upper side of the lower limit portion;

[0009] There is a slight movement gap between the upper limit wheel and the upper limit position part;

[0010] There is a slight movement gap between the front and rear limiting wheels and the connecting part.

[0011] More preferably, the gap between the upper limit wheel and the upper limit position part is 1mm;

[0012] The gap between the front and rear limiting wheels and the connecting part is 1mm.

[0013] More preferably, the movable rubber wheel, the upper limit wheel, and the front and rear limit wheels are all cylindrical polyurethane-coated rollers.

[0014] Because we distribute the force during operation to different rubber rollers, each roller bears almost entirely radial force. This allows us to use softer polyurethane while ensuring lifespan, eliminating the need for POM or nylon rollers commonly used in fabric spreading machines, thus achieving a relatively quiet operation. The polyurethane also provides cushioning during operation, resulting in smoother movement and reduced impact on the mechanism.

[0015] More preferably, the roller frame is equipped with two movable rubber wheels arranged in a front-to-back manner, two front-to-back limiting wheels arranged in a front-to-back manner, and one upper limiting wheel;

[0016] The limiting wheel is located between the two front and rear limiting wheels, and the two front and rear limiting wheels are located between the two movable rubber wheels.

[0017] More preferably, the support frame is equipped with a connecting frame for connecting the conveyor belt, and the connecting frame is located between the front and rear rolling frames.

[0018] More preferably, at least two of the support frames are installed side by side on the same conveyor belt.

[0019] More preferably, the connecting frame includes a U-shaped frame with its opening facing downwards, and the U-shaped frame is detachably connected to a pressure plate by bolts;

[0020] The conveyor belt is held between the U-shaped frame and the pressure plate.

[0021] More preferably, the guide rails are mounted on the front and rear sides of a frame;

[0022] A drive mechanism is installed on the frame, which drives the pulley to rotate, and the conveyor belt is fitted onto the pulley.

[0023] More preferably, the frame is equipped with two sets of drive mechanisms arranged in a left-right mirror symmetrical configuration;

[0024] The drive mechanism drives two sets of left and right mirror-symmetrical sliding components to move closer to each other and further away from each other.

[0025] More preferably, the roller frame includes an L-shaped base and a mounting plate, the L-shaped base is detachably connected to the support frame, the inner side of the L-shaped base is detachably connected to the mounting plate, and the spreading wheel set is mounted on the mounting plate;

[0026] Both the mounting plate and the L-shaped base are provided with clearance holes for avoiding the front and rear limit wheels.

[0027] More preferably, a cable chain bracket for connecting a cable chain is detachably connected to the side of the support frame away from the movable clamp.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] Our mechanism ensures that all spreading wheel sets are subjected to radial forces only, thereby improving the life of the moving rubber wheels, improving the main frame of the spreading clamp, reducing shear forces, and increasing the life of the mechanism.

[0030] The guide rails of the spreading mechanism were changed to a symmetrical arrangement, with two sets of movable rubber wheels installed symmetrically. While retaining the normal movable rubber wheels, two pairs of limiting rubber wheels were added. The movable rubber wheels are only subjected to radial force caused by gravity, while the front and rear limiting rubber wheels are at 90° to the movable rubber wheels and are only subjected to radial force during the final tensioning of the spread fabric. At the same time, the force on the entire mechanism is basically on one plane, making the force distribution more favorable to the mechanism. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the sliding component according to a specific embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the roller frame in specific embodiment 1 of the present invention.

[0034] In the diagram: 1 is the sliding component, 2 is the guide rail, 3 is the drive mechanism, 11 is the roller frame, 12 is the connecting frame, 13 is the movable clamp, 111 is the upper limit wheel, 112 is the movable rubber wheel, and 113 is the front and rear limit wheel. Detailed Implementation

[0035] The present invention will now be further described with reference to the accompanying drawings.

[0036] See also Figures 1 to 3Specific Embodiment 1: A silent, high-life fabric spreading mechanism for a fabric spreading machine includes symmetrically arranged guide rails 2, each guide rail being a C-shaped profile with an outward opening. The guide rails 2 include an upper limit section and a lower limit section arranged side-by-side, connected by a connecting section. The mechanism also includes a sliding assembly 1 that slides left and right on the guide rails 2. The sliding assembly 1 includes a support frame, on which a movable clamp 13 for holding fabric is mounted. Roller frames 11 are radially symmetrically mounted on the front and rear sides of the support frame. Fabric spreading wheel sets are mounted on the roller frames 11. The fabric spreading wheel sets include a movable rubber wheel 112, an upper limit wheel 111, and front and rear limit wheels 113. The central axes of the movable rubber wheel 112 and the upper limit wheel 111 are parallel to each other, while the central axis of the front and rear limit wheels 113 is vertical. The movable rubber wheel 112 rolls above the lower limit section. A slight movement gap exists between the upper limit wheel 111 and the upper limit section. A slight movement gap exists between the front and rear limit wheels 113 and the connecting section. The gap between the upper limit wheel 111 and the upper limit part is 1mm; the gap between the front and rear limit wheels 113 and the connecting part is 1mm.

[0037] The moving roller 112, the upper limit roller 111, and the front and rear limit rollers 113 are all cylindrical polyurethane-coated rollers. Because we distribute the force during operation to different rollers, each roller bears almost entirely radial force. This allows us to use softer polyurethane while ensuring lifespan, eliminating the need for POM or nylon rollers commonly used in fabric spreading machines, thus achieving a relatively quiet operation. During operation, the polyurethane provides a certain degree of cushioning, resulting in smoother movement and reduced impact on the mechanism.

[0038] The roller frame 11 is equipped with two movable rubber wheels 112 arranged in a front-to-back manner, two front and rear limit wheels 113 arranged in a front-to-back manner, and one upper limit wheel 111; the limit wheel is located between the two front and rear limit wheels 113, and the two front and rear limit wheels 113 are located between the two movable rubber wheels 112.

[0039] A connecting frame 12 for connecting the conveyor belt is installed on the support frame, and the connecting frame 12 is located between the front and rear rolling frames. At least two support frames are installed side by side on the same conveyor belt. The connecting frame 12 includes a U-shaped frame with its opening facing downward, and a pressure plate is detachably connected to the U-shaped frame by bolts; the conveyor belt is clamped between the U-shaped frame and the pressure plate.

[0040] Guide rails 2 are installed on the front and rear sides of a frame; a drive mechanism 3 is installed on the frame, which drives a pulley to rotate, and a conveyor belt is fitted onto the pulley. Two sets of drive mechanisms 3 are installed on the frame, arranged in a left-right mirror symmetry; the drive mechanisms 3 drive the two sets of sliding components 1, arranged in a left-right mirror symmetry, to move closer to each other and further away from each other.

[0041] The roller frame 11 includes an L-shaped base and a mounting plate. The L-shaped base is detachably connected to the support frame, and the inner side of the L-shaped base is detachably connected to the mounting plate. A spreading wheel set is mounted on the mounting plate. Both the mounting plate and the L-shaped base are provided with avoidance holes for avoiding the front and rear limit wheels 113.

[0042] A cable chain bracket for connecting the cable chain is detachably connected to the side of the support frame away from the movable clamp 13.

[0043] The operating logic of the fabric spreading mechanism is as follows: after the two fabric spreading clamps grasp the linen, they simultaneously and rapidly move to both sides. At this time, the force on the spreading wheel assembly is the radial resultant force caused by gravity and acceleration on the moving wheel, while the other wheels, which play a guiding role, experience weak force. Then, after the linen is pulled apart, the motor increases torque, and the force on the moving wheel increases. At this time, the force on the moving wheel is the radial resultant force caused by gravity and tension. The horizontal component of this action is received by the front and rear limit wheels 113 (in commercially available spreading mechanisms, this component of force is borne by the moving U-shaped rubber wheel), and this component of force is also a radial force for the front and rear limit wheels 113. The two fabric spreading clamps shake the linen by decreasing and then increasing their relative distance, and finally, while maintaining the increased torque to pull the linen apart, the next step is to place the linen onto the conveyor belt.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A silent, long-life fabric spreading mechanism for a fabric spreading machine, characterized in that, The guide rails are symmetrically arranged front and back. The guide rails are C-shaped profiles with the opening facing outward. The guide rails include an upper limit part and a lower limit part arranged side by side. The upper limit part and the lower limit part are connected by a connecting part. It also includes a sliding assembly that slides left and right on the guide rail. The sliding assembly includes a support frame, on which a movable clamp for holding linens is installed. Roller frames are radially symmetrically installed on the front and rear sides of the support frame. A fabric spreading wheel assembly is installed on the roller frames. The fabric spreading wheel assembly includes a movable rubber wheel, an upper limit wheel, and front and rear limit wheels. The central axes of the movable rubber wheel and the upper limit wheel are parallel to each other, and the central axis of the front and rear limit wheels is in the vertical direction. The movable rubber wheel rolls on the upper side of the lower limit portion; There is a slight movement gap between the upper limit wheel and the upper limit position part; There is a slight movement gap between the front and rear limiting wheels and the connecting part.

2. The silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: The gap between the upper limit wheel and the upper limit position part is 1mm; The gap between the front and rear limiting wheels and the connecting part is 1mm.

3. The silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: The movable rubber wheel, the upper limit wheel, and the front and rear limit wheels are all cylindrical polyurethane-coated rollers.

4. The silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: The roller frame is equipped with two movable rubber wheels arranged in a front-to-back configuration, two front-to-back limiting wheels arranged in a front-to-back configuration, and one upper limit wheel; The limiting wheel is located between the two front and rear limiting wheels, and the two front and rear limiting wheels are located between the two movable rubber wheels.

5. The silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: The support frame is equipped with a connecting frame for connecting the conveyor belt, and the connecting frame is located between the front and rear rolling frames.

6. The silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 5, characterized in that: The connecting frame includes a U-shaped frame with its opening facing downwards, and a pressure plate is detachably connected to the U-shaped frame by bolts; The conveyor belt is held between the U-shaped frame and the pressure plate.

7. A silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 6, characterized in that: The guide rails are installed on the front and rear sides of a frame; A drive mechanism is installed on the frame, which drives the pulley to rotate, and the conveyor belt is fitted onto the pulley.

8. A silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 7, characterized in that: Two sets of drive mechanisms are mounted on the frame in a left-right mirror-symmetrical arrangement. The drive mechanism drives two sets of left and right mirror-symmetrical sliding components to move closer to each other and further away from each other.

9. A silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: The roller frame includes an L-shaped base and a mounting plate. The L-shaped base is detachably connected to the support frame. The inner side of the L-shaped base is detachably connected to the mounting plate. The spreading wheel assembly is mounted on the mounting plate. Both the mounting plate and the L-shaped base are provided with clearance holes for avoiding the front and rear limit wheels.

10. A silent, long-life fabric spreading mechanism for a fabric spreading machine according to claim 1, characterized in that: A cable chain bracket for connecting a cable chain is detachably connected to the side of the support frame away from the movable clamp.

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