Brake device for cloth feeding roller of spreading machine

Abstract

The utility model relates to a brake device for a cloth feeding roller of a spreading machine, which is characterized in that the brake device comprises symmetrically arranged racks, the racks are connected to the rear end of the spreading machine, a support frame is arranged on the racks, a fixing mechanism is arranged between the support frame and the racks, the fixing mechanism is used for fixing the support frame, and the cloth feeding roller is arranged on the rack. A cloth feeding roller is connected between the supporting frames on the two sides, the supporting frames are rotationally connected with extrusion speed limiting blocks, and the extrusion speed limiting blocks are used for applying positive pressure to the ends of the cloth feeding roller so as to adjust friction force borne by the cloth feeding roller during rotation. The cloth pulling device has the following advantages and effects that the rotating speed of the cloth feeding roller can be adjusted in the cloth pulling process, so that the situation that cloth deviates in the cloth pulling process due to the fact that the rotating speed of the cloth feeding roller is too high is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth stretching machines, in particular to a brake device for a cloth feeding roller of a cloth stretching machine. Background Art

[0002] A cloth-pulling machine is a device that flattens rolled cloth and lays it flat layer by layer. It mainly includes a bed, a feeding mechanism, a cloth pressing mechanism and a cloth-pulling mechanism. After the cloth is transported to the bed by the feeding mechanism, the cloth-pulling mechanism clamps and moves the cloth sent to the bed. After moving a set distance, the pulled cloth is cut so that the pulled cloth can be laid on the bed. This reciprocating process allows the flattened cloth to be laid flat layer by layer.

[0003] For example, a Chinese patent technical document with publication number CN220641938U discloses a cloth pulling machine, which includes a unwinding mechanism, a clamping mechanism and a cutting mechanism arranged in sequence along a first preset path; the unwinding mechanism includes a first motor and an unwinding shaft connected to the first motor in transmission; the clamping mechanism includes a first conveying roller, a plurality of second conveying rollers located on the front and rear sides of the first conveying roller, and a second motor for driving the first conveying roller to rotate; the cutting mechanism includes a cutting table arranged after the clamping mechanism, a cutting device and a trolley arranged on the cutting table and spaced apart along the first preset path; the axial directions of the unwinding shaft, the first conveying roller and the second conveying roller are all perpendicular to the first preset path and also perpendicular to the up and down directions.

[0004] In the above technical solution, after the clamping mechanism clamps the cloth on the unwinding shaft, the movement of the clamping mechanism can drive the unwinding shaft to rotate, so as to pull the cloth on the unwinding shaft for subsequent laying. However, in actual use, it is found that when the clamping mechanism pulls the cloth at a faster speed, it is easy to cause the rotation speed of the unwinding shaft to be faster, so that the cloth on the unwinding shaft deviates during the pulling process, thereby affecting the subsequent laying of the cloth. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a braking device for the cloth feed roller of a cloth pulling machine, which can adjust the rotation speed of the cloth feed roller during the cloth pulling process to avoid the cloth feed roller rotating too fast, which may cause the cloth to deviate during the cloth pulling process.

[0006] To achieve the above object, the utility model provides the following technical solutions: A braking device for a cloth feeding roller of a cloth pulling machine, including symmetrically arranged frames, the frames are connected to the rear end of the cloth pulling machine, a support frame is provided on the frames, a fixing mechanism is provided between the support frame and the frames, the fixing mechanism is used to fix the support frame, and the two support frames are used to connect the cloth feeding roller. A squeezing speed limiting block is rotatably connected to the support frame, and the squeezing speed limiting block is used to apply a positive pressure to the end of the cloth feeding roller to adjust the frictional force received when the cloth feeding roller rotates.

[0007] The utility model is further arranged as follows: The fixing mechanism includes arc-shaped adjusting waist holes provided on the support frame, there are multiple arc-shaped adjusting waist holes and they are distributed at intervals in a circumferential direction. Multiple connection holes corresponding to each arc-shaped adjusting waist hole are provided on the frames, and the connection holes and the arc-shaped adjusting waist holes are connected by bolts and nuts.

[0008] The utility model is further arranged as follows: A guiding wheel is rotatably connected to the frames, there are multiple guiding wheels and they are evenly distributed in a circumferential direction. An annular guiding groove adapted to the guiding wheels is provided at the end of the cloth feeding roller, and the guiding wheels are coupled to the annular guiding groove and can form a rolling fit with each other.

[0009] The utility model is further arranged as follows: A through first threaded hole is provided on the support frame, and a second threaded hole opposite to the support frame is provided on the squeezing speed limiting block.

[0010] The utility model is further arranged as follows: A friction pad is provided on the side of the squeezing speed limiting block facing the cloth feeding roller. Grooves for increasing friction are provided on the friction pad. Through third threaded holes are provided around the friction pad, and fourth threaded holes opposite to the third threaded holes are provided on the squeezing speed limiting block.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] After installing the end of the cloth feeding roller on the support frame, by moving the squeezing speed limiting block towards the end of the cloth feeding roller until the squeezing speed limiting block contacts the end of the cloth feeding roller, a frictional force can be applied to the cloth feeding roller when the cloth feeding roller is pulled to rotate, so as to limit the rotation speed of the cloth feeding roller and avoid the rotation speed of the cloth feeding roller from being too fast. Therefore, it effectively solves the technical problem that the rotation speed of the cloth feeding roller is too fast during the cloth pulling process in the prior art, resulting in the cloth running off during the cloth pulling process. And by adjusting the amplitude of the squeezing speed limiting block rotating towards the end of the cloth feeding roller, different positive pressures can be applied to the end of the cloth feeding roller, so as to adjust the magnitude of the frictional force received when the cloth feeding roller rotates, and thus the rotation speed of the cloth feeding roller can be adjusted according to the specific use situation, making the overall use more flexible. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the side view structure of the present utility model;

[0015] Figure 3 is a schematic diagram of the connection between the support frame and the extrusion speed limiting block in the present utility model;

[0016] Figure 4 is a schematic diagram of the enlarged partial structure at position A of the present utility model. Detailed implementation manners

[0017] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] Such as Figures 1 to 4As shown in the figure, the utility model discloses a braking device for a cloth feeding roller of a cloth pulling machine, which includes symmetrically arranged frames 1. The frames 1 are connected to the rear end of the cloth pulling machine. A support frame 2 is provided on the frames 1. A fixing mechanism is arranged between the support frame 2 and the frames 1, and the fixing mechanism is used to fix the support frame 2. The two support frames 2 are used to connect the cloth feeding roller 3. A squeezing speed limiting block 4 is rotatably connected to the support frame 2. The squeezing speed limiting block 4 is used to apply a positive pressure to the end of the cloth feeding roller 3 to adjust the frictional force received when the cloth feeding roller 3 rotates. After the end of the cloth feeding roller 3 is installed on the support frame 2, by moving the squeezing speed limiting block 4 towards the end of the cloth feeding roller 3 until the squeezing speed limiting block 4 contacts the end of the cloth feeding roller 3, a frictional force can be applied to the cloth feeding roller 3 when the cloth feeding roller 3 is pulled to rotate, so as to limit the rotation speed of the cloth feeding roller 3 and avoid the cloth running off during the cloth pulling process due to the too fast rotation speed of the cloth feeding roller 3. And by adjusting the amplitude of the squeezing speed limiting block 4 rotating towards the end of the cloth feeding roller 3, different positive pressures can be applied to the end of the cloth feeding roller 3, so that the magnitude of the frictional force received when the cloth feeding roller 3 rotates can be adjusted, and thus the rotation speed of the cloth feeding roller 3 can be adjusted according to the specific usage situation, making the overall use more flexible.

[0020] In this embodiment, a guide wheel 6 is further rotatably connected to the frame 1. There are multiple guide wheels 6 which are evenly distributed in a circumferential manner. An annular guide groove 31 adapted to the guide wheel 6 is provided at the end of the cloth feeding roller 3. The guide wheel 6 is coupled to the annular guide groove 31 and can form a rolling fit with each other. By setting the guide wheel 6 to cooperate with the squeezing speed limiting block 4 to tightly press the end of the cloth feeding roller 3, and the guide wheel 6 can be coupled in the guide groove to play a guiding role in the rotation of the cloth feeding roller 3 when the cloth feeding roller 3 rotates, so as to prevent the cloth feeding roller 3 from camming while not affecting the normal rotation of the cloth feeding roller 3.

[0021] In this embodiment, the specific structure of the fixing mechanism includes arc-shaped adjusting waist holes 51 provided on the support frame 2. There are multiple arc-shaped adjusting waist holes 51 which are distributed at intervals in a circumferential manner. Multiple connection holes corresponding to each arc-shaped adjusting waist hole 51 are provided on the frame 1. The connection holes and the arc-shaped adjusting waist holes 51 are connected by bolts 52 and nuts 53. By setting the arc-shaped adjusting waist holes 51, the installation angle of the support frame 2 on the frame 1 can be adjusted to a certain extent, so as to facilitate the coupling of the guide wheel 6 and the annular guide groove 31, thereby improving the installation convenience of the support frame 2. And by setting multiple groups of arc-shaped adjusting waist holes 51, the support frame 2 can be fixed by multiple groups of bolts 52 and nuts 53 to improve the installation stability of the support frame 2.

[0022] In this embodiment, a through first threaded hole is provided on the support frame 2, and a second threaded hole 41 opposite to the support frame 2 is provided on the extrusion speed limiting block 4. Therefore, when it is necessary to adjust the rotation amplitude of the end of the extrusion speed limiting block 4 facing the fabric feeding roller 3, first screw out the locking member that forms a threaded fit with the first threaded hole and the second threaded hole 41, so that the extrusion speed limiting block 4 can be rotated. After the extrusion speed limiting block 4 is rotated to a suitable position, then screw the corresponding locking member into the first threaded hole and the second threaded hole 41 to complete the fixation of the extrusion speed limiting block 4 on the support frame 2.

[0023] In this embodiment, a friction pad 7 is further provided on the side of the extrusion speed limiting block 4 facing the fabric feeding roller 3. The friction pad 7 is provided with grooves for increasing friction. By providing the friction pad 7, the speed limiting effect of the extrusion speed limiting block 4 on the rotation of the fabric feeding roller 3 can be improved. The friction pad 7 is specifically made of an elastic material, such as rubber, so as to better fit the end of the fabric feeding roller 3. Through holes are provided around the friction pad 7, and fourth threaded holes opposite to the third threaded holes 71 are provided on the extrusion speed limiting block 4. By screwing in or out the locking member that forms a threaded fit with the third threaded holes 71 and the fourth threaded holes, the detachable connection of the friction pad 7 can be realized, so as to ensure that the friction pad 7 always has an excellent speed limiting effect during long-term use.

[0024] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A brake device for a cloth feeding roller of a cloth stretching machine, characterized in that: It includes a symmetrically arranged frame, which is connected to the rear end of the cloth pulling machine, a support frame is provided on the frame, a fixing mechanism is provided between the support frame and the frame, and the fixing mechanism is used to fix the support frame. The support frames on both sides are used to connect the cloth feed roller, and an extrusion speed limit block is rotatably connected to the support frame. The extrusion speed limit block is used to apply positive pressure to the end of the cloth feed roller to adjust the friction force applied to the cloth feed roller when it rotates.

2. A brake device for a cloth feeding roller of a cloth stretching machine according to claim 1, characterized in that: The fixing mechanism includes an arc-shaped adjustment waist hole arranged on the support frame, and the arc-shaped adjustment waist holes are multiple and distributed at circumferential intervals. The frame is provided with multiple connecting holes corresponding to each arc-shaped adjustment waist hole, and the connecting holes are connected to the arc-shaped adjustment waist holes by bolts and nuts.

3. The brake device for the cloth feeding roller of a cloth stretching machine according to claim 1, characterized in that: The frame is rotatably connected with a guide wheel, the guide wheels are multiple and evenly distributed along the circumference, the end of the cloth feeding roller is provided with an annular guide groove adapted to the guide wheel, the guide wheel is coupled to the annular guide groove, and can form a rolling fit with each other.

4. The brake device for the cloth feeding roller of a cloth stretching machine according to claim 1, characterized in that: The support frame is provided with a first threaded hole that penetrates through it, and the extrusion speed limit block is provided with a second threaded hole that is opposite to the support frame.

5. A brake device for a cloth feeding roller of a cloth stretching machine according to claim 1 or 4, characterized in that: The extrusion speed limit block is provided with a friction pad on the side facing the cloth feed roller, the friction pad is provided with a groove for increasing friction, the friction pad is provided with a third threaded hole passing through it around, and the extrusion speed limit block is provided with a fourth threaded hole opposite to the third threaded hole.

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