Cloth stretching mechanism

Abstract

The utility model discloses a cloth supporting and spreading mechanism relates to cloth winding device field. Including winding assembly and adjusting assembly, adjusting assembly locates on winding assembly, winding assembly includes axle and expansion part, and expansion part is located on the axle and is along the circumferential direction of axle and is arranged on the surface of circumference, and expansion part includes a plurality of expansion parts, and a plurality of expansion parts are arranged on the surface of axle along the circumferential direction of axle, and expansion part extends along the length direction of axle, the surface of axle of expansion part is higher, and recess is formed between adjacent expansion parts, and every recess is equipped with positioning assembly, and positioning assembly is placed in the end of recess, adjusting assembly includes push part and processing part, and positioning assembly and push part are connected processing part through signal line respectively, and cloth is placed between positioning assembly when winding assembly winds. The application has the advantages that the cloth is always in the central position of the axle through the dynamic adjustment of the position of the axle, and the deviation in the winding process is eliminated as far as possible.

Description

Technical Field

[0001] This utility model relates to the field of fabric winding devices, and more particularly to a fabric spreading mechanism. Background Technology

[0002] Fabric stretching typically uses a structure similar to an expansion shaft (tile shaft). However, existing fabric stretching mechanisms often suffer from lateral movement of the fabric during stretching, requiring an adjustment mechanism, which is complex. In practice, the adjustment mechanism is placed in front of the expansion shaft; the fabric is adjusted before being wound onto the tile shaft, and the fabric is stretched by changing the diameter of the tile shaft. This results in a lag in the actual adjustment; even as the stretching shaft rotates, the fabric, being in a changing state, still exhibits some deviation. Reducing this deviation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a fabric spreading mechanism.

[0004] This utility model is achieved by the following technical solution: a fabric spreading mechanism, including a winding assembly and an adjustment assembly, wherein the adjustment assembly is disposed on the winding assembly;

[0005] The winding assembly includes a shaft and an expansion section. The expansion section is disposed on the shaft and arranged on the circumferential surface of the shaft. The expansion section includes a plurality of expansion members, which are arranged on the surface of the shaft along the circumferential direction and extend along the length direction of the shaft.

[0006] The expansion member is above the surface of the axis, and a groove is formed between adjacent expansion members. A positioning component is provided in each groove, and the positioning component is placed at the end of the groove.

[0007] The adjustment assembly includes a pushing part and a processing part. The positioning assembly and the pushing part are respectively connected to the processing part via signal lines. When the winding assembly winds the fabric, the fabric is placed between the positioning assemblies.

[0008] The surface of the shaft has a mounting groove along its length, and a plurality of mounting grooves are evenly distributed on the surface of the shaft along its circumference. The expansion member is disposed in the mounting groove.

[0009] The expansion component includes an expansion plate and a rubber connecting layer. A vent hole is opened at the bottom of the mounting groove, which communicates with the inside of the shaft. The inside of the shaft is hollow. An air inlet is opened on the central axis of the shaft, which communicates with the inside of the shaft. The mounting groove and the expansion plate are connected by the rubber connecting layer, which also seals the mounting groove.

[0010] The positioning component includes a positioning plate, which is fixed to the end of the shaft and extends toward and above the surface of the shaft. A pressure sensor is provided on the positioning plate, and the pressure sensor is connected to the processing unit via a signal line.

[0011] The shaft has a rotating shaft at its end center, and the air inlet is through the center of the rotating shaft. The position of the air inlet remains unchanged when the shaft rotates.

[0012] The expansion plate has vent holes on its surface, and the diameter of the vent holes is smaller than that of the inlet holes.

[0013] The pushing part is mounted on the frame for mounting the shaft and pushes the shaft along the axial direction of the shaft;

[0014] The frame has a through hole for mounting the shaft. A ball bearing is installed in the through hole, and the outer ring of the ball bearing is engaged in the through hole. An elongated hole is formed on the outer ring of the ball bearing. A limiting claw extends from the inner wall of the through hole into the elongated hole. The pushing part is provided on the frame to push the shaft, thereby causing the limiting claw to move in the elongated hole.

[0015] Compared to existing technologies, in the process of winding the fabric, the fabric is generally located in the middle of the entire axis. When the fabric deviates, the edge of the fabric touches the pressure sensor, and the signal from the pressure sensor is transmitted to the processing unit. The processing unit can then adjust the position of the axis based on the signal. By dynamically adjusting the position of the axis, the fabric is kept in the center of the axis, thereby minimizing deviations during the winding process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fabric spreading mechanism in this utility model;

[0017] Figure 2 yes Figure 1 A magnified view of the structure at point A in the middle;

[0018] Figure 3 This is a partial enlarged schematic diagram of the fabric spreading mechanism in this utility model;

[0019] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure at point B in the middle;

[0020] Figure 5 A cross-sectional view of the internal structure of the fabric spreading mechanism in this utility model;

[0021] In the diagram: 1. Shaft; 2. Mounting groove; 3. Groove; 4. Expansion plate; 5. Rubber connecting layer; 6. Vent hole; 7. Positioning plate; 8. Pressure sensor; 9. Air inlet; 10. Air outlet; 11. Frame; 12. Ball bearing; 13. Limiting claw; 14. Elongated hole; 15. Pushing part; 16. Ball. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Reference Figure 1-3 A fabric spreading mechanism includes a winding assembly and an adjusting assembly, with the adjusting assembly disposed on the winding assembly. The winding assembly includes a shaft 1 and an expansion portion. The expansion portion is disposed on the shaft 1 and arranged on the circumferential surface of the shaft 1. The expansion portion includes several expansion members, which are arranged on the surface of the shaft 1 along the circumferential direction and extend along the length of the shaft 1. The expansion members protrude above the surface of the shaft 1, and grooves 3 are formed between adjacent expansion members. Each groove 3 contains a positioning assembly, which is located at the end of the groove 3. In actual use, when the expansion portion is inflated, it protrudes from the surface of the shaft 1, thus allowing the fabric to be wound. When the fabric deviates, the adjusting assembly can push the entire shaft 1 to make a slight offset to correct the slight deviation of the fabric during the winding process.

[0024] The adjustment assembly in this embodiment includes a pushing unit 15 and a processing unit. The positioning assembly and the pushing unit 15 are respectively connected to the processing unit via signal lines. When the winding assembly winds the fabric, it is placed between the positioning assemblies. A mounting groove 2 is formed on the surface of the shaft 1 along its length. Several mounting grooves 2 are evenly distributed around the circumference of the shaft 1. An expansion member is disposed within the mounting groove 2. In this embodiment, the expansion member includes an expansion plate 4 and a rubber connecting layer 5. A vent hole 6 is formed at the bottom of the mounting groove 2, communicating with the interior of the shaft 1. The shaft 1 is hollow inside. An air inlet hole 9 is formed on the central axis of the shaft 1, communicating with the interior of the shaft 1. The mounting groove 2 and the expansion plate 4 are connected by the rubber connecting layer 5, which seals the mounting groove 2. In use, the shaft 1 can be inflated by an external air compressor, causing the expansion plate 4 to protrude. Since the air inlet hole 9 coincides with the central axis, only a rotary joint is needed when the external air compressor is connected to the air inlet hole 9 via a flexible hose. It does not affect the rotation of the shaft 1, and can also fill the cavity with air through the rotary joint to power the expansion plate 4. Of course, there must be a venting part inside the shaft 1. A hole can be opened at any position on the surface of the shaft 1 or on the surface of the expansion plate 4 to form an air outlet 10. However, the diameter of the hole must be smaller than the diameter of the air inlet 9. In this way, the venting speed is not as fast as the inflation speed, so that the expansion plate 4 can be driven to bulge when the air compressor is inflating. At this time, although the air outlet 10 is still venting air, the venting speed of the air outlet 10 is less than the inlet speed of the air inlet 9. That is, the expansion plate 4 can still expand after air is inlet.

[0025] The positioning component in this embodiment includes a positioning plate 7, which is fixed to the end of the shaft 1 and extends towards and above the surface of the shaft 1. A pressure sensor 8 is provided on the positioning plate 7, and the pressure sensor 8 is connected to the processing unit via a signal line. Normally, the fabric is located in the middle of the shaft 1. When the fabric deviates, the edge of the fabric touches the pressure sensor 8, and the signal from the pressure sensor 8 is transmitted to the processing unit. The processing unit can then adjust the position of the shaft 1 based on the signal. By dynamically adjusting the position of the shaft 1, the fabric is kept in the center of the shaft 1, thereby minimizing deviations during the winding process.

[0026] In this embodiment, a rotating shaft is provided at the center of the end of the shaft 1, and an air inlet 9 passes through the center of the rotating shaft. The position of the air inlet 9 remains unchanged when the shaft 1 rotates. In actual use, it is used in conjunction with a frame 11. A through hole is provided on the frame 11 for supporting the shaft 1. A ball bearing 12 is installed in the through hole, and the outer ring of the ball bearing 12 is engaged in the through hole. An elongated hole 14 is provided on the outer ring of the ball bearing 12. A limiting claw 13 extends from the inner wall of the through hole into the elongated hole 14. A pushing part 15 is provided on the frame 11 to push the shaft 1, thereby causing the limiting claw 13 to move within the elongated hole 14. The pushing part 15 is provided on the frame 11 for supporting the shaft 1 and pushes the shaft 1 along the axial direction of the shaft 1. Specifically, the pushing unit 15 can be a conventional linear drive device such as a hydraulic cylinder or a pneumatic cylinder. A ball bearing 16 can be installed on the end face of the drive shaft that contacts the shaft 1. When the end face of the drive shaft pushes against the shaft 1, the end face of the shaft 1 contacts the ball bearing 16, causing the ball bearing 16 to rotate. This means that the contact between the drive shaft and the shaft 1 does not affect the rotation of the shaft 1 during the movement of the entire linear drive device, thus not affecting the operation of the shaft 1 in winding the fabric. Normally, the fabric is located in the middle of the shaft 1. When the fabric deviates, its edge touches the pressure sensor 8, and the signal from the pressure sensor 8 is transmitted to the processing unit. The processing unit can then adjust the position of the shaft 1 based on this signal. By dynamically adjusting the position of the shaft 1, the fabric is kept in the center of the shaft 1, thereby minimizing deviations during the winding process.

[0027] Compared to existing technologies, in the process of winding the fabric, the fabric is generally located in the middle of the entire shaft 1. When the fabric deviates, the edge of the fabric touches the pressure sensor 8, and the signal from the pressure sensor 8 is transmitted to the processing unit. The processing unit can then adjust the position of the shaft 1 based on the signal. By dynamically adjusting the position of the shaft 1, the fabric is kept in the center of the shaft 1, thereby minimizing deviations during the winding process.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fabric spreading mechanism, comprising a winding assembly and an adjusting assembly, characterized in that: The adjustment component is disposed on the winding component; The winding assembly includes a shaft and an expansion section. The expansion section is disposed on the shaft and arranged on the circumferential surface of the shaft. The expansion section includes a plurality of expansion members, which are arranged on the surface of the shaft along the circumferential direction and extend along the length direction of the shaft. The expansion member is above the surface of the axis, and a groove is formed between adjacent expansion members. A positioning component is provided in each groove, and the positioning component is placed at the end of the groove. The adjustment assembly includes a pushing part and a processing part. The positioning assembly and the pushing part are respectively connected to the processing part via signal lines. When the winding assembly winds the fabric, the fabric is placed between the positioning assemblies.

2. The fabric spreading mechanism according to claim 1, characterized in that: The surface of the shaft has a mounting groove along its length, and a plurality of mounting grooves are evenly distributed on the surface of the shaft along its circumference. The expansion member is disposed in the mounting groove. The expansion component includes an expansion plate and a rubber connecting layer. A vent hole is opened at the bottom of the mounting groove, which communicates with the inside of the shaft. The inside of the shaft is hollow. An air inlet is opened on the central axis of the shaft, which communicates with the inside of the shaft. The mounting groove and the expansion plate are connected by the rubber connecting layer, which also seals the mounting groove.

3. The fabric spreading mechanism according to claim 1, characterized in that: The positioning component includes a positioning plate, which is fixed to the end of the shaft and extends toward and above the surface of the shaft. A pressure sensor is provided on the positioning plate, and the pressure sensor is connected to the processing unit via a signal line.

4. The fabric spreading mechanism according to claim 2, characterized in that: The shaft has a rotating shaft at its end center, and the air inlet is through the center of the rotating shaft. The position of the air inlet remains unchanged when the shaft rotates.

5. A fabric spreading mechanism according to claim 2, characterized in that: The expansion plate has vent holes on its surface, and the diameter of the vent holes is smaller than that of the inlet holes.

6. The fabric spreading mechanism according to claim 3, characterized in that: The pushing part is mounted on the frame for mounting the shaft and pushes the shaft along the axial direction of the shaft; The frame has a through hole for mounting the shaft. A ball bearing is installed in the through hole, and the outer ring of the ball bearing is engaged in the through hole. An elongated hole is formed on the outer ring of the ball bearing. A limiting claw extends from the inner wall of the through hole into the elongated hole. The pushing part is provided on the frame to push the shaft, thereby causing the limiting claw to move in the elongated hole.

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