Rotating mechanism suitable for large-size materials

Abstract

The utility model relates to the technical field of sewing machine manufacturing, in particular to a rotating mechanism suitable for large-size materials, which comprises a working table and a cutting head mounted on the working table, the working table is used for locally supporting the materials, and the outer contour of the working table is arc-shaped; the positioning device is arranged above the workbench, is located at the position, close to the cutting head, in the material advancing direction and is used for fixing the four corners of the material; the rotating device is arranged above the workbench and used for pressing materials and enabling the materials to rotate with the positioning device as the circle center, the rotating device comprises a rotating support, a pressing support and a first driving mechanism driving the rotating support to rotate, a second driving mechanism is arranged on the rotating support, and the driving end of the second driving mechanism is connected with the pressing support; the pressing support is driven to be away from or close to the workbench.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine manufacturing, and particularly relates to a rotating mechanism suitable for large-sized materials. Background Art

[0002] In the fields of textile and household goods manufacturing, during the production and processing of large-sized bath towels, the hemming process is one of the key processes to ensure the product quality and aesthetics. Traditionally, for the hemming treatment of large-sized bath towels, it mostly relies on manual or semi-automatic equipment. For large-sized bath towels, manual hemming not only has low efficiency but also is difficult to ensure the uniformity and consistency of hemming. Especially when dealing with long or heavy bath towels, manual operation is not only laborious but also easily leads to uneven hemming, affecting the overall quality of the product. While the existing semi-automatic hemming equipment has improved the production efficiency to a certain extent, for large-sized bath towels, there are problems of accumulation and blockage during the rotating transportation process, and it cannot accurately control the rotation and positioning of the bath towels during the hemming process, resulting in unsatisfactory hemming effects.

[0003] Therefore, this application has developed a rotating mechanism suitable for large-sized materials to solve the problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotating mechanism suitable for large-sized materials to solve the problem that the rotation and positioning of materials during the hemming process cannot be accurately controlled in the prior art.

[0005] The technical solution of the utility model is: a rotating mechanism suitable for large-sized materials, comprising:

[0006] A workbench and a cutting head installed on the workbench, the workbench provides partial support for the material, and the outer contour of the workbench is arc-shaped;

[0007] A positioning device, arranged above the workbench and located at a position close to the cutting head in the advancing direction of the material, for fixing the four corners of the material;

[0008] A rotating device, arranged above the workbench, for pressing and rotating the material with the positioning device as the center. The rotating device includes a rotating bracket, a pressing bracket, and a first driving mechanism for driving the rotation of the rotating bracket. A second driving mechanism is arranged on the rotating bracket, and the driving end of the second driving mechanism is connected to the pressing bracket and drives the pressing bracket to move away from or close to the workbench.

[0009] Preferably, auxiliary brackets extend along a direction perpendicular to the pressing bracket at both ends of the pressing bracket.

[0010] Preferably, a plurality of buffers are provided on both the pressing bracket and the auxiliary bracket. An abutting portion is provided at one end of each of the plurality of buffers close to the workbench, and the plurality of abutting portions are in the same horizontal plane.

[0011] Preferably, the auxiliary bracket away from the cutting head is close to the outer contour edge of the workbench.

[0012] Preferably, the positioning device includes a positioning column, a third driving mechanism for driving the positioning column away from and close to the workbench, and a photoelectric sensor. The photoelectric sensor is arranged on one side of the positioning column close to the cutting head.

[0013] Preferably, a tip extends from the center of the surface of the positioning column close to the workbench towards the workbench. When one side of the material is edge-bonded, the distances from the tip to the two adjacent sides of the material are equal.

[0014] Preferably, when one side of the material is edge-bonded, the light emitted by the photoelectric sensor is located at the edge of the material.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] (1) The tip of the positioning column contacts the material, abuts the material on the platen, and the rotating device rotates to make the material rotate around a point, which can accurately control the rotation position of the material, so that the material is under the cutting head for edge-bonding, improving the edge-bonding efficiency and quality;

[0017] (2) A plurality of abutting portions are provided on the rotating bracket, increasing the contact points with the material, reducing the situation of excessive single-point force, and reducing the accumulation and blockage of the material during rotation, thereby improving the conveying efficiency;

[0018] (3) An auxiliary bracket is further provided on the rotating bracket to fix the rotating material in multiple directions, making the material rotate more smoothly and reducing the risk of slipping or falling off. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0020] Figure 1 is a schematic structural diagram of the rotating device of the present utility model;

[0021] Figure 2 is a schematic structural diagram of a rotating mechanism applicable to large-size materials of the present utility model;

[0022] Figure 3 is Figure 2 an enlarged structural diagram of A in

[0023] Figure 4It is a schematic structural diagram of the positioning device described in the present utility model;

[0024] Figure 5 It is a side view of the installation positions of the rotation device, positioning device and cutting head on the workbench described in the present utility model;

[0025] Figure 6 It is a top view of the installation positions of the rotation device and positioning device on the workbench described in the present utility model.

[0026] Wherein: 1. Workbench; 2. Cutting head; 3. Positioning device; 31. Positioning column; 32. Third driving mechanism; 33. Photoelectric sensor; 4. Rotation device; 41. Rotation bracket; 42. Pressing bracket; 43. First driving mechanism; 44. Second driving mechanism; 45. Sub-bracket; 5. Buffer; 6. Contact portion. Specific embodiments

[0027] The following combines specific embodiments to further elaborate on the content of the present utility model:

[0028] As Figures 1 - 3 shown, a rotation mechanism applicable to large-sized materials includes a workbench 1 and a cutting head 2, a positioning device 3, and a rotation device 4 installed on the workbench 1. The workbench 1 provides partial support for the material. The outer contour of the workbench 1 is arc-shaped. When the material is edge-bonded by the cutting head 2, the rotation device 4 and the positioning device 3 do not come into contact with the material. After one side of the material is edge-bonded, it is necessary to rotate the material so that the adjacent side of the material rotates to the corresponding position of the cutting head 2 for edge-bonding treatment. The positioning device 3 approaches the material and abuts against a corner of the material. The second driving mechanism 44 drives the pressing bracket 42 to move onto the material and presses the material onto the workbench 1. Subsequently, the first driving mechanism 43 drives the rotation bracket 41 to rotate, and the pressing bracket 42 rotates the material around the positioning device 3 on the workbench 1 until the other side of the material corresponds to the position of the cutting head 2 to complete the rotational positioning transfer of the material.

[0029] Furthermore, as Figure 1 shown, sub-brackets 45 extend from both ends of the pressing bracket 42 in a direction perpendicular to the pressing bracket 42. The pressing bracket 42 and the sub-brackets 45 form a multi-rod structure, pressing on the material in multiple directions. The bracket composed of multiple rods is more stable in structure and can withstand greater torque and radial force. During the rotation of the material, the acting forces in multiple directions can keep the material flat and evenly stressed, preventing the material from being distorted or wrinkled due to uneven stress, thereby improving the quality and efficiency of edge-bonding.

[0030] Among them, a plurality of buffers 5 are provided on both the pressing bracket 42 and the auxiliary bracket 45. An abutting portion 6 is provided at one end of the plurality of buffers 5 close to the workbench 1. The plurality of abutting portions 6 are in the same horizontal plane. The buffer 5 can ensure that the material remains stable during rotation, avoiding wrinkles or unevenness caused by sudden acceleration or deceleration. At the same time, it can also make the rotation of the material smoother and more efficient, capable of accelerating the edge wrapping speed and improving production efficiency;

[0031] And the plurality of abutting portions 6 can disperse the pressure of the rotating portion on the material, reducing the situation of excessive single-point force, thereby reducing the risk of the material slipping or falling off during rotation, and being able to guide the material to move more smoothly, reducing the accumulation and blockage of the material during rotation, thereby improving the conveying efficiency. The plurality of abutting portions 6 are on the same horizontal plane, capable of evenly dispersing the pressure of the rotating portion on the material, reducing the local stress concentration of the material during rotation, and avoiding deformation or damage of the material due to excessive single-point force.

[0032] Furthermore, the auxiliary bracket 45 away from the cutting head 2 is close to the outer contour edge of the workbench 1, so that a larger contact area is formed between the auxiliary bracket 45 and the pressing bracket 42 and the material, capable of providing more stable support, reducing the slipping or offset phenomenon of the material during rotation. At the same time, with a large contact area, the pressure received by the material is more evenly distributed, reducing the situation of excessive local force.

[0033] Such as Figures 4 - 6 shown, the positioning mechanism includes a positioning column 31, a third driving mechanism 32 and a photoelectric sensor 33. The third driving mechanism 32 drives the positioning column 31 to move away from or close to the workbench 1. When the positioning column 31 presses the material, the material rotates around the pressing point. When the positioning column 31 moves away from the material, the material performs the edge wrapping work.

[0034] To improve the efficiency of material edge wrapping, a tip extends from the side of the positioning column 31 close to the workbench 1 along the center towards the table board. When one side of the material is edge wrapped, the distance from the tip to the two adjacent sides of the material is equal. After one side of the material is edge wrapped, the rotating device 4 controls the material to rotate around the tip. When the other side corresponds to the position of the cutting head 2, because the distance from the tip to the two adjacent sides of the material is equal, there is no need to adjust the position of the material again, and the edge wrapping work can continue, greatly reducing the time for repeatedly aligning the side of the material with the cutting head 2 during the edge wrapping process.

[0035] Further, when the edge of the material is finished with edge wrapping, the light emitted by the photoelectric sensor is located at the edge of the material. After the edge wrapping of one side of the material is completed, the photoelectric sensor 33 does not detect the material and feeds back to the third driving mechanism 32. The third driving mechanism 32 drives the positioning post 31 to press the material. If the photoelectric sensor 33 II is located on the side of the positioning post 31 away from the cutting head 2, then when the photoelectric sensor 33 II does not detect the material, the positioning post 31 can no longer position the material, resulting in random rotation of the material and inability to make the side of the material to be edge-wrapped correspond to the cutting head 2.

[0036] The implementation principle of this embodiment:

[0037] When edge-wrapping the material, the material is placed on the workbench 1. One side of the material passes through the cutting head 2 for edge wrapping. After the edge wrapping of one side of the material is completed, the material continues to move and will no longer be within the irradiation range of the photoelectric sensor 33. At this time, the photoelectric sensor 33 does not detect the material, and the control drives the third mechanism to drive the positioning post 31 to press down on a corner of the material. At this time, the second driving mechanism 44 drives the pressing bracket 42 and the auxiliary bracket 45 to move towards the material. When the abutting portion 6 contacts the material, the first driving mechanism 43 controls the pressing bracket 42 and the auxiliary bracket 45 to press the material on the workbench 1 and rotate around the tip of the positioning post 31. During the rotation process, the buffer 5 can ensure the stability of the material movement until the other side of the material corresponds to the cutting head 2 and continues with edge wrapping.

[0038] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A rotating mechanism applicable to large-sized materials, characterized in that Including: A workbench (1) and a cutting head (2) installed on the workbench (1), the workbench (1) provides partial support for the material, and the outer contour of the workbench (1) is arc-shaped; A positioning device (3), arranged above the workbench (1) and located at a position close to the cutting head (2) in the advancing direction of the material, for fixing the four corners of the material; A rotating device (4), arranged above the workbench (1), for pressing and rotating the material with the positioning device (3) as the center. The rotating device (4) includes a rotating bracket (41), a pressing bracket (42) and a first driving mechanism (43) for driving the rotation of the rotating bracket (41). A second driving mechanism (44) is arranged on the rotating bracket (41), and the driving end of the second driving mechanism (44) is connected to the pressing bracket (42) and drives the pressing bracket (42) to move away from or close to the workbench (1).

2. The rotary mechanism for large-sized materials according to claim 1, characterized in that: Auxiliary brackets (45) extend from both ends of the pressing bracket (42) in a direction perpendicular to the pressing bracket (42).

3. The rotating mechanism for large-sized materials according to claim 2, characterized in that: A plurality of buffers (5) are arranged on both the pressing bracket (42) and the auxiliary brackets (45). An abutting portion (6) is arranged at one end of the plurality of buffers (5) close to the workbench (1), and the plurality of abutting portions (6) are in the same horizontal plane.

4. The rotary mechanism for large-sized materials according to claim 2, characterized in that: The auxiliary bracket (45) far from the cutting head (2) is close to the outer contour edge of the workbench (1).

5. A rotating mechanism applicable to large-sized materials according to claim 1, characterized in that: The positioning device (3) includes a positioning column (31), a third driving mechanism (32) for driving the positioning column (31) to move away from and close to the workbench (1), and a photoelectric sensor (33). The photoelectric sensor (33) is arranged on one side of the positioning column (31) close to the cutting head (2).

6. The rotary mechanism for large-sized materials according to claim 5, characterized in that: A tip extends from the center of the surface of the positioning column (31) close to the workbench (1) towards the workbench (1). When one side of the material is edge-bonded, the distances from the tip to the two adjacent sides of the material are equal.

7. A rotating mechanism applicable to large-sized materials according to claim 5, characterized in that: When one side of the material is edge-bonded, the light emitted by the photoelectric sensor (33) is located at the edge of the material.

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