A bath towel edging machine

Abstract

The present application relates to sewing machine manufacturing technical field, specifically to a bath towel overlock machine, including: workbench, the workbench includes a table plate, for placing materials, the workbench is equipped with the cutting head for overlock, the needle of cutting head is inclined to the table plate, the table plate is partially supported for materials, and the outer contour of the table plate is in the shape of an arc;Deviation correction device, set on the workbench, the deviation correction device includes a first drive mechanism, the first drive mechanism is fixed on the workbench through a support, and the side close to the table plate of the first drive mechanism is provided with a rotary pressing device for pressing and abutting materials and making materials deviate;Photoelectric sensor one, set on the support and close to the feeding position, the light emitted by photoelectric sensor one is on the same straight line with the needle of cutting head;Positioning mechanism, set above the table plate and located close to the cutting head in the direction of material advancement, for positioning the four corners of the material;Rotary device, set above the table plate, for compacting and rotating the material with the positioning mechanism as the center.

Description

Technical Field

[0001] This invention relates to the field of sewing machine manufacturing technology, and in particular to a towel binding machine. Background Technology

[0002] With the continuous advancement of industrial automation technology, various automated production equipment has been widely used in the textile industry. As a branch of sewing machines, overlock machines have also undergone a development process from large and cumbersome to lightweight and flexible, and from single-function to multi-function. Currently, there are many types of overlock machines on the market, such as carpet overlock machines, blanket overlock machines, and car seat cushion overlock machines, covering multiple industry sectors. However, in the bath towel production field, although some automated overlock equipment has been put into use, many shortcomings still exist. Existing bath towel overlock machines typically require rotating and moving the bath towel to sew the four sides. Due to the large size of bath towels, it is impossible to ensure that the towel always moves in a straight line during this process, resulting in poor overlock quality. Furthermore, traditional overlock machines rely on manual rotation and movement during the overlock process, which is time-consuming and labor-intensive, and accurate positioning after rotation is impossible. Continuing to overlock makes it difficult to guarantee the consistency and stability of the overlock quality, affecting the overall product quality.

[0003] Therefore, this patent develops a towel edge-wrapping machine to solve the problems existing in the prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a towel edge-wrapping machine to solve the problems in the prior art where the material cannot be corrected in time when it deviates and cannot be accurately positioned when the material rotates.

[0005] The technical solution of this invention is: a towel edge-binding machine, comprising:

[0006] A workbench, comprising a tabletop for placing materials, a cutting head for edge binding, the needle of the cutting head being biased toward the tabletop, the tabletop providing partial support for the materials, and the outer contour of the tabletop being arc-shaped.

[0007] A correction device is provided on the workbench and located at the feeding position. The correction device includes a first drive mechanism, which is fixed on the workbench by a bracket. The side of the first drive mechanism near the workbench is provided with a rotating pressing device that presses against the material and causes the material to deflect.

[0008] A photoelectric sensor is mounted on the bracket and near the feeding position. The light emitted by the photoelectric sensor is in the same straight line as the needle of the cutting head.

[0009] A positioning mechanism is provided above the platform and located near the cutting head in the material's forward direction, for positioning the four corners of the material;

[0010] A rotating device is disposed above the platform and is used to press and rotate the material with the positioning mechanism as the center.

[0011] Preferably, the rotary pressing device includes a side plate, which is disposed on one side of the first driving mechanism. A second driving mechanism is fixedly disposed on the side plate. The driving end of the second driving mechanism is connected to a rotary abutment part, which abuts against and rotates with the material, causing the material to move to one side. A pressure plate is fixedly disposed on the lower surface of the side plate, and the pressure plate is disposed along the moving direction of the material.

[0012] Preferably, the pressure plate extends below the rotating abutment portion, and a slot is provided through the pressure plate, the position of which corresponds to the position of the rotating abutment portion.

[0013] Preferably, the outer surface of the rotating abutment part is arc-shaped, and the rotation direction of the rotating abutment part is set at an angle to the movement direction of the material.

[0014] Preferably, the positioning mechanism includes a positioning column and a third driving mechanism for driving the positioning column away from and towards the platform, and a second photoelectric sensor, which is disposed between the positioning column and the rotating pressing device.

[0015] Preferably, the side of the positioning post closest to the platform extends along the center toward the platform to form a tip, and after one side of the material is finished being edged, the tip is equidistant from the two adjacent sides of the material.

[0016] Preferably, when one side of the material is finished being wrapped, the light emitted by the second photoelectric sensor is located at the edge of the material.

[0017] Preferably, the rotating device includes a rotating part and a fourth driving mechanism for driving the rotating part to rotate, and a fifth driving mechanism for driving the rotating part away from and towards the platform. A plurality of contact parts are provided below the rotating part, and the contact parts are on the same horizontal plane.

[0018] Preferably, the orthographic projection of the rotating part onto the platform falls on the platform, and the rotating part remains on the platform as it rotates.

[0019] Preferably, the workbench also includes:

[0020] A rotating support structure is provided below the platform to support materials hanging from the edge of the platform;

[0021] The synchronous feeding mechanism is located in the direction of material movement and moves the material through rotational friction.

[0022] The receiving mechanism is located on the side of the worktable that is biased towards the end of the material's forward direction, and is positioned in the height direction between the platform and the rotating support structure, for carrying the material on the worktable.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] (1) Sensor 1 can detect in real time whether the material being edged is shifted;

[0025] (2) The first driving mechanism drives the pressure plate to press on the material to prevent the material that has already shifted from shifting further and seriously affecting the edge-sealing quality.

[0026] (3) The second drive mechanism drives the rotating contact part to contact the material, and the material is gradually moved by the rotational friction, so that the side of the material is always in a straight line to prevent the material from deviating.

[0027] (4) The tip of the positioning column contacts the material and presses the material against the table. The rotating device rotates so that the material rotates around a point. It can accurately control the rotation position of the material and make the material under the cut head for edge wrapping, thereby improving edge wrapping efficiency and edge wrapping quality. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Figure 1 This is a schematic diagram of the structure of the correction device described in this invention;

[0030] Figure 2 This is a schematic diagram of the structure of a bath towel edge-wrapping machine according to the present invention;

[0031] Figure 3 for Figure 2 Enlarged structural diagram of A in the middle;

[0032] Figure 4 This is a structural diagram of the positioning mechanism described in this invention;

[0033] Figure 5 This is a schematic diagram of the structure of the rotating device described in this invention;

[0034] Figure 6 This is a side view of the installation position of the correction device described in this invention;

[0035] Figure 7 This is a top view of the initial position of the rotating device described in this invention;

[0036] Figure 8 This is a schematic diagram showing the position of the rotating device at the moment of motion described in this invention;

[0037] Figure 9 This is a schematic diagram showing the end position of the rotating device described in this invention.

[0038] The components include: 1. Workbench; 11. Tabletop; 2. Cutting head; 3. Correction device; 31. First drive mechanism; 32. Support; 33. Rotary pressing device; 331. Side plate; 332. Second drive mechanism; 333. Rotary abutment part; 334. Pressure plate; 335. Groove; 4. Photoelectric sensor one; 5. Positioning mechanism; 51. Positioning column; 52. Third drive mechanism; 53. Photoelectric sensor two; 6. Rotating device; 61. Rotating part; 62. Fourth drive mechanism; 63. Fifth drive mechanism; 64. Contact part; 7. Rotary support structure; 8. Synchronous material pulling mechanism; 9. Material receiving mechanism. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to specific embodiments:

[0040] like Figures 1-3 As shown, a towel edge-binding machine includes a worktable 1, a correction device 3, a positioning mechanism 5, a rotating device 6, a rotating support structure 7, a synchronous material pulling mechanism 8, and a material receiving mechanism 9. The worktable 1 includes a table plate 11, on which a cutting head 2 is mounted, with the needle of the cutting head 2 angled towards the table plate 11. The table plate 11 is used to place materials, and the edges of the materials are edge-bound by the cutting head 2. The synchronous material pulling mechanism 8 abuts against the materials, and through friction, drives the materials to move, thereby completing the edge binding on one side of the materials. As the materials move on the table plate 11, the table plate... 11 can only provide partial support. Some material hangs down along the outer contour of the platform 11 onto the rotating support structure 7. Due to gravity, the material on the platform 11 may shift, and the material cannot be accurately moved to the bottom of the cutting head 2 for edge binding. At this time, the photoelectric sensor 4 detects that there is no material below, and controls the correction device 3 to run. The first drive mechanism 31 drives the rotating pressing device 33 to move downward, so that the rotating pressing device 33 presses on the material and rotates and rubs on the material to move the material, so that the side of the material moves into a straight line.

[0041] In this embodiment, the correction device 3 is fixed on the workbench 1 and set at the feeding position. It corrects the deviation of the material when the material is edged. The correction device 3 includes a first drive mechanism 31 and is fixed on the workbench 1 by a bracket 32. A rotating pressing device 33 is provided on one side of the first drive mechanism 31 and is close to the table plate 11, so that the rotating pressing device 33 is always above the material when driven by the first drive mechanism 31, without causing errors or deviations.

[0042] Furthermore, such as Figures 6-7As shown, photoelectric sensor 4 is mounted on bracket 32 ​​and close to the feeding position. It works with the correction device 3 to correct the material deviation. The light emitted by photoelectric sensor 4 is on the same straight line as the needle of the cutting head 2, while the edge of the material is located below the needle of the cutting head 2. Therefore, photoelectric sensor 4 can promptly determine whether the material has deviated by reflecting the light, which greatly improves the quality and efficiency of the edge banding.

[0043] After one side of the material is finished with hemming, the material needs to be rotated to continue hemming the adjacent side. The positioning mechanism 5 fixes one corner of the material, and the rotating device 6 presses the material and rotates it, causing the material to rotate around the positioning mechanism 5 on the platform 11, so that the other side of the material corresponds to the cutting head 2.

[0044] like Figure 4 As shown, the positioning mechanism 5 includes a positioning column 51, a third drive mechanism 52, and a photoelectric sensor 53. The third drive mechanism 52 drives the positioning column 51 to move away from or closer to the platform 11. When the positioning column 51 presses the material, the material rotates around the pressing point. When the positioning column 51 moves away from the material, the material continues to move under the drive of the synchronous material pulling mechanism 8 to perform edge wrapping.

[0045] Furthermore, the photoelectric sensor 53 is located between the positioning post 51 and the rotating pressing device 33. When one side of the material is finished being edged, the light emitted by the photoelectric sensor 53 is located at the edge of the material. After one side of the material is finished being edged, there is no material under the rotating pressing device 33. At this time, the photoelectric sensor 53 does not detect the material and sends feedback to the third driving mechanism 52. The third driving mechanism 52 drives the positioning post 51 to press the material. If the photoelectric sensor 53 is located on the side of the positioning post 51 away from the rotating pressing device 33, then when the photoelectric sensor 53 does not detect the material, the positioning post 51 can no longer position the material, causing the material to rotate randomly and preventing the side of the material to be edged from facing the cutting head 2.

[0046] like Figure 1 As shown, the rotary pressing device 33 includes a side plate 331, which is disposed on one side of the first driving mechanism 31. A second driving mechanism 332 is fixed on the side plate 331. The driving end of the second driving mechanism 332 is connected to a rotary abutment part 333, and a pressure plate 334 is fixed on the lower surface of the side plate 331. The first driving mechanism 31 drives the side plate 331 to move, and the pressure plate 334 moves with the side plate 331 away from or closer to the material. When the material deviates, the first driving mechanism 31 drives the pressure plate 334 to press the material, ensuring that the material will not deviate further. When the material does not deviate, the pressure plate 334 can also press down on the material, so that the material remains stable during the edge-wrapping process and will not affect the quality and effect of the edge-wrapping due to movement or misalignment.

[0047] Furthermore, the pressure plate 334 is arranged along the material's movement direction and extends below the rotating abutment part 333. The pressure plate 334 has a groove 335, the position of which corresponds to the position of the rotating abutment part 333. The first drive mechanism 31 drives the pressure plate 334 to press against the material, and the second drive mechanism 332 drives the rotating abutment part 333 to pass through the groove 335 and contact the material, abutting against it. The rotating friction of the rotating abutment part 333 causes the material to move towards the cutting head 2, making the side edge of the hemmed section a straight line. The outer surface of the rotating abutment part 333 is arc-shaped, increasing the contact area and friction, and adapting to different material surfaces, making it easier to move the material. The material returns to its original position before the offset, and the rotation direction of the rotating abutment 333 is set at an angle to the material's movement direction. Only when the force is perpendicular to the material's movement direction can the material return to its original position before the offset. The angle is set to prevent the material's movement direction from being parallel to the rotation direction, which would cause a change in the path and potentially accelerate the material's movement. This would result in a difference between the material's movement speed on the platform 11 and the material's movement speed on the rotating support structure 7, leading to uneven force distribution. This would increase the offset of the material that has already been offset, seriously affecting the edge-sealing quality and efficiency. It also prevents the material's movement direction from being perpendicular to the rotation direction, which would prevent the rotating abutment 333 from rotating when the material moves, thus failing to perform the correction function.

[0048] To improve the efficiency of material edge binding, the positioning post 51 extends from the center of the platform 11 to form a tip. After one side of the material is edge bound, the tip is equidistant from the two adjacent sides of the material. After one side of the material is edge bound, the rotating device 6 controls the material to rotate around the tip. When the other side is aligned with the cutter head 2, since the tip is equidistant from the two adjacent sides of the material, there is no need to adjust the position of the material, and the edge binding work can continue. This greatly reduces the time spent repeatedly aligning the side of the material with the cutter head 2 during the edge binding process.

[0049] like Figures 5-9 As shown, the rotating device 6 includes a rotating part 61, a fourth drive mechanism 62, and a fifth drive mechanism 63. The fourth drive mechanism 62 rotates to make the rotating part 61 rotate on the platform 11, controlling the movement position of the material. The fifth drive mechanism 63 controls the rotating part 61 to move away from or closer to the platform 11. Multiple contact parts 64 are provided below the rotating part 61. Multiple contact points can disperse the pressure of the rotating part 61 on the material, reduce the situation of excessive force at a single point, thereby reducing the risk of material slippage or falling off during rotation, and can guide the material to move more smoothly, reducing the accumulation and blockage of material during rotation, thereby improving the conveying efficiency. Multiple contact parts 64 are on the same horizontal plane, which can evenly disperse the pressure of the rotating part 61 on the material, reduce the local stress concentration of the material during rotation, and avoid the material from deforming or being damaged due to excessive force at a single point.

[0050] Furthermore, the orthographic projection of the rotating part 61 onto the table 11 falls on the table 11. When the rotating part 61 rotates, it remains on the table 11 to prevent some of the contact parts 64 from being suspended. When some contact points are suspended, the force that should have been borne by the suspended contact parts 64 will be transferred to other non-suspended contact parts 64, which will result in uneven force distribution and failure to provide effective support for the material. This may cause the material to shake or shift during rotation, thus preventing the side of the material from corresponding to the cutting head 2.

[0051] The implementation principle of this embodiment:

[0052] When edge-binding the material, the material is placed on the platform 11, and part of the material hangs down along the edge of the platform 11 onto the rotating support structure 7. The material on the rotating support structure 7 moves synchronously with the material on the platform 11 to prevent uneven force and displacement. The side edge of the material is edge-binded by the cutter head 2. The synchronous pulling mechanism 8 abuts against the material and moves the material through rotational friction. When the material deviates, the photoelectric sensor 4 does not detect the material and sends signals to the first drive mechanism 31 and the second drive mechanism 332. The first drive mechanism 31 drives the pressure plate 334 to press against the material, while the second drive mechanism 332 drives the rotating abutment part 333 to pass through the slot 335 and abut against the material. During the movement of the material, the rotating abutment part 333 rotates. The material is subjected to force perpendicular to the direction of movement, causing it to move towards the cutting head 2, keeping the side edge in a straight line. After one side is finished, the photoelectric sensor 53 does not detect the material and controls the third drive mechanism 52 to drive the positioning column 51 to press down on one corner of the material. At this time, the fourth drive mechanism 62 and the fifth drive mechanism 63 respectively drive the rotating part 61 to press on the material and rotate around the tip of the positioning column 51 until the other side of the material corresponds to the cutting head 2 and the edge is finished. After all four sides of the material are finished, the synchronous pulling mechanism 8 drives the material to the receiving mechanism 9 to retrieve the material.

[0053] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A towel edge-binding machine, characterized in that, include: Workbench (1), the workbench (1) includes a table plate (11) for placing materials, the workbench (1) is provided with a cutting head (2) for edge binding, the needle of the cutting head (2) is biased towards the table plate (11), the table plate (11) provides partial support for materials, and the outer contour of the table plate (11) is arc-shaped. A correction device (3) is installed on the workbench (1) and located at the feeding position. The correction device (3) includes a first drive mechanism (31), which is fixed on the workbench (1) by a bracket (32). The first drive mechanism (31) is provided with a rotating pressing device (33) on the side of the workbench (11) near the table plate (11) to press against the material and cause the material to deflect. The rotating pressing device (33) includes a side plate (331), which is installed on one side of the first drive mechanism (31). A second drive mechanism (332) is fixed on the side plate (331). The driving end of the second drive mechanism (332) is connected to a rotating abutment part (333), which abuts against the material and moves with the material. The material moves and rotates, causing it to move to one side. A pressure plate (334) is fixed on the lower surface of the side plate (331), and the pressure plate (334) is arranged along the direction of material movement. The pressure plate (334) extends to the bottom of the rotating abutment part (333), and a slot (335) is provided through the pressure plate (334). The position of the slot (335) corresponds to the position of the rotating abutment part (333). The first driving mechanism (31) drives the pressure plate (334) to press on the material, and the second driving mechanism (332) drives the rotating abutment part (333) to pass through the slot (335) and contact the material and abut against each other. The rotating abutment part (333) rotates and rubs, causing the material to move towards the cutting head (2), so that the side edge at the edge is a straight line. A photoelectric sensor (4) is mounted on the bracket (32) and close to the feeding position. The light emitted by the photoelectric sensor (4) is on the same straight line as the needle of the cutting head (2). The positioning mechanism (5) is set above the platform (11) and located near the cutting head (2) in the material advancing direction, and is used to position the four corners of the material; A rotating device (6) is disposed above the platform (11) for pressing and rotating the material with the positioning mechanism (5) as the center.

2. The towel edge-wrapping machine according to claim 1, characterized in that: The outer surface of the rotating abutment part (333) is arc-shaped, and the rotation direction of the rotating abutment part (333) is set at an angle to the movement direction of the material.

3. The towel edge-wrapping machine according to claim 1, characterized in that: The positioning mechanism (5) includes a positioning post (51) and a third driving mechanism (52) for driving the positioning post (51) away from and closer to the platform (11), and a second photoelectric sensor (53), which is disposed between the positioning post (51) and the rotating pressing device (33).

4. A towel edge-binding machine according to claim 3, characterized in that: The positioning post (51) extends along the center toward the platform (11) on the side closest to the platform (11) to form a tip. After one side of the material is finished to be wrapped, the tip is equidistant from the two adjacent sides of the material.

5. A towel edge-wrapping machine according to claim 4, characterized in that: When one side of the material is finished being wrapped, the light emitted by the photoelectric sensor (53) is located at the edge of the material.

6. A towel edge-wrapping machine according to claim 1, characterized in that: The rotating device (6) includes a rotating part (61) and a fourth driving mechanism (62) for driving the rotating part (61) to rotate, and a fifth driving mechanism (63) for driving the rotating part (61) away from and closer to the platform (11). A plurality of contact parts (64) are provided below the rotating part (61), and the contact parts (64) are on the same horizontal plane.

7. A towel edge-wrapping machine according to claim 6, characterized in that: The orthographic projection of the rotating part (61) onto the platform (11) falls on the platform (11). When the rotating part (61) rotates, the rotating part (61) is always located on the platform (11).

8. A towel edge-wrapping machine according to claim 1, characterized in that, The workbench (1) also includes: A rotating support structure (7) is provided below the platform (11) for supporting materials falling from the edge of the platform (11); The synchronous feeding mechanism (8) is located in the forward direction of the material and moves the material through rotational friction; The receiving mechanism (9) is located on the side of the workbench (1) that is biased toward the end of the material's forward direction and is positioned in the height direction between the table plate (11) and the rotating support structure (7) for carrying the material on the workbench (1).

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