Flipper mechanism for double needle stitch

Abstract

The utility model discloses a kind of turnover plate mechanisms for double needle joint, including left side plate, right side plate, left side plate and right side plate can be turned upside down around a shaft body, further include the first motor for driving left side plate to turn upside down, the second motor for driving right side plate to turn upside down;When discharging, the left side plate is vertically arranged upwards, and the right side plate is horizontally arranged;When clamping material, the right side plate is turned upside down from horizontal state to vertical and is overlapped on the right side of the left side plate;When pre-supporting material, the left side plate and the right side plate are turned upside down downwards away from each other, and both are inclined and extended to the upper of the shaft body to constitute V shape;When supporting material, the left side plate and the right side plate continue to be turned upside down downwards away from each other, until both are in horizontal state.This is controlled by two motors respectively left side plate, right side plate, improve the precision of discharging and supporting material, and it is beneficial to improve double needle joint operation quality.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology, and in particular to a flap mechanism for double-needle stitching, which mainly, but is not limited to, opening the support material of two caps. Background Technology

[0002] Reference Figure 7 and Figure 8 As shown, taking a baseball cap as an example, its crown is formed by sewing together several adjacent cap pieces A1 to create a hemispherical crown. In actual sewing, two adjacent cap pieces A1 are overlapped and sewn on one side. Then, the two cap pieces A1 are turned outwards from the center seam A2 as a reference. The presser foot needs to be placed on top of the two cap pieces A1 after they are turned out, and double needle sewing is performed on both sides of the center seam A2. During sewing, a side strip A3 is placed on the inside of the cap piece A1. The side strip covers the center seam A2 of the two cap pieces A1. The two sides of the side strip A3 form a sewing track A4 with the corresponding positions of the two cap pieces A1's center seam A2.

[0003] CN113235233A discloses a page-turning component in an automated cap-making production line, including a mounting base, a page-turning assembly, two sets of drive assemblies, a translation assembly, and an angle adjustment assembly. The page-turning assembly is correspondingly mounted on the top of the mounting base. The two sets of drive assemblies are matched and mounted on the side walls of the mounting base, and the output end of the drive assemblies is pulsatorically connected to the page-turning assembly. The angle adjustment assembly is mounted on the lower surface of the mounting base, and the translation assembly is matched and mounted on the lower surface of the angle adjustment assembly. In use, after the fabric is conveyed, it falls onto the left and right side plates. The left and right side plates are used to collect the fabric, and the operator uses an electrically controlled cylinder, driven by a connecting component, to clamp and open the left and right side plates.

[0004] This structure has some limitations and shortcomings: 1. When the fabric falls on the left and right side plates, the fabric position is prone to deviation; 2. The linear drive stroke of the cylinder is fixed, and the rotation control is achieved by connecting parts, which inevitably leads to unsatisfactory opening and closing; 3. The cylinder needs to be electrically controlled by the operator, which is more troublesome and limits the improvement of work efficiency.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a flip-plate mechanism for double-needle stitching, which is controlled by two motors respectively on the left and right sides, improving the accuracy of material feeding and supporting, and thus improving the quality of double-needle stitching operations.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A flip-plate mechanism for double-needle stitching includes a left side plate and a right side plate, the left side plate and the right side plate being able to flip up and down around an axis, and also includes a first motor for driving the left side plate to flip up and down and a second motor for driving the right side plate to flip up and down.

[0009] In the feeding state, the left side plate is vertically positioned upwards, and the right side plate is horizontally positioned.

[0010] When the material is clamped, the right side plate flips upward and switches from a horizontal state to a vertical stack on the right side of the left side plate;

[0011] In the pre-supported state, the left side plate and the right side plate flip downwards away from each other, and both extend obliquely to the top of the shaft to form a V-shape;

[0012] When the material is supported, the left side plate and the right side plate continue to flip downwards away from each other until both are in a horizontal state.

[0013] As a preferred embodiment, the first motor is connected to a first drive wheel, a first transmission wheel, and a first synchronous belt; the first drive wheel is connected to the first motor, the first transmission wheel is rotatably sleeved on the shaft and connected to the left side plate, and the first synchronous belt is connected between the first drive wheel and the first transmission wheel;

[0014] The second motor is connected to a second drive wheel, a second transmission wheel, and a second synchronous belt; the second drive wheel is connected to the second motor, the second transmission wheel is rotatably sleeved on the shaft and connected to the right side plate, and the second synchronous belt is connected between the second drive wheel and the second transmission wheel.

[0015] As a preferred embodiment, the left side plate is connected to a first ring portion, and one end of the first transmission wheel extends axially to a first extension portion, with the first ring portion sleeved on the first extension portion and fixedly connected.

[0016] As a preferred embodiment, the left side plate is also connected to a second ring, and a first bearing is sleeved on the shaft, with the second ring sleeved on the first bearing.

[0017] As a preferred embodiment, the right side plate is connected to a third ring portion, and one end of the second transmission wheel extends axially to a second extension portion. The third ring portion is fitted onto the second extension portion and fixedly connected.

[0018] As a preferred embodiment, the right side plate is also connected to a fourth ring, and a second bearing is sleeved on the shaft, with the fourth ring sleeved on the second bearing.

[0019] As a preferred embodiment, both the left side plate and the right side plate are provided with vacuum adsorption units for adsorbing the sheet material;

[0020] Alternatively, both the left and right side plates may be provided with puncture positioning units for piercing the sheet.

[0021] As a preferred embodiment, the shaft is connected to a folding mechanism facing the sewing machine head end, which folds up the sewing edge between the two pieces of material; the folding mechanism includes a clamping cylinder and a pushing cylinder, the clamping cylinder is connected to a pair of clamps that open and close along the X-axis, which are used to clamp the sewing edge between the two pieces of material, and the pushing cylinder is connected to the clamping cylinder to drive the clamping cylinder to swing displacement.

[0022] As a preferred embodiment, the clamping cylinder is mounted on a cylinder seat, which is provided with a connecting shaft and a connecting crank. The telescopic rod of the flat-push cylinder is connected to the connecting shaft through a fisheye connector, which is rotatable relative to the connecting shaft. The upper end of the connecting crank is provided with a shaft hole, and the crank is rotatably sleeved on the shaft body facing the sewing machine head end through the shaft hole.

[0023] As a preferred embodiment, a workpiece sensing unit is provided below the right side plate, and correspondingly, a sensing hole is provided on the right side plate. When the workpiece sensing unit senses that the workpiece has been placed on the right side plate, the second motor drives the right side plate to flip upward.

[0024] As a preferred embodiment, a clamping mechanism is provided below the left side plate and the right side plate. The clamping mechanism includes a first clamp, a second clamp, and a flip-gripping cylinder. In the clamping state, the flip-gripping cylinder drives the first clamp and the second clamp to flip upward and move closer together to further clamp the left side plate and the right side plate.

[0025] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it is mainly controlled by two motors to control the left side plate and the right side plate respectively. The motors are easy to control the rotation position accurately and can control different strokes multiple times, which improves the accuracy of feeding and supporting materials and is conducive to improving the quality of double-needle stitching.

[0026] Secondly, by utilizing the workpiece sensing unit, automatic motor control can be achieved, eliminating the need for manual operation of the start switch, simplifying operation, improving work efficiency, and reducing the risk of human error.

[0027] Furthermore, its structure is compact and reasonable, with an integrated hemming mechanism on the shaft facing the sewing machine head. This mechanism can clamp and position the lower end of the fabric when it is clamped, which is beneficial for the overall centering and positioning of the fabric. At the same time, the hemming mechanism can fold the sewing edge between the two pieces of fabric, which is beneficial for the quality of subsequent double-needle stitching and results in better flatness.

[0028] Furthermore, the clamping mechanism enhances the clamping effect. After further clamping by the clamping mechanism, the vacuum adsorption unit can be controlled to hold the sheet (or the piercing positioning unit can be controlled to pierce the sheet), improving the positioning firmness of the left and right side plates on the attached sheet, so that the sheet can be accurately flipped open according to the left and right side plates.

[0029] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0030] Figure 1 This is a perspective view of a flip-plate mechanism for double-needle stitching according to an embodiment of the present invention;

[0031] Figure 2 This is an exploded view of a flip-plate mechanism for double-needle stitching according to an embodiment of the present invention;

[0032] Figure 3 This is another exploded view of the flip-plate mechanism for double-needle stitching according to an embodiment of the present invention;

[0033] Figure 4 This is a perspective view of the folding mechanism of the flip-plate mechanism for double-needle stitching according to an embodiment of the present invention;

[0034] Figure 5 This is another perspective view of the folding mechanism of the flip-plate mechanism for double-needle stitching according to an embodiment of the present invention;

[0035] Figure 6 This is a structural diagram of a flip-plate mechanism for double-needle stitching applied to a double-needle stitching machine, according to an embodiment of this utility model.

[0036] Figure 7 This is a structural diagram of a baseball cap;

[0037] Figure 8 This is another structural illustration of a baseball cap. Detailed Implementation

[0038] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0039] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] A flip-plate mechanism for double-needle stitching includes a left side plate 401 and a right side plate 402, which are capable of flipping up and down around a shaft 403. The mechanism also includes a first motor 41 for driving the left side plate 401 to flip up and down and a second motor 42 for driving the right side plate 402 to flip up and down. The shaft 403 is mounted on a flip-plate base 40, and a first support 4001 and a second support 4002 are provided on the flip-plate base 40 to support both ends of the shaft 403.

[0041] The first motor 41 is connected to a first drive wheel 411, a first transmission wheel 412 and a first synchronous belt 413; the first drive wheel 411 is connected to the first motor 41, the first transmission wheel 412 is rotatably sleeved on the shaft 403 and connected to the left side plate 401, and the first synchronous belt 413 is connected between the first drive wheel 411 and the first transmission wheel 412.

[0042] The second motor 42 is connected to a second drive wheel 421, a second transmission wheel 422 and a second synchronous belt 423; the second drive wheel 421 is connected to the second motor 42, the second transmission wheel 422 is rotatably sleeved on the shaft 403 and connected to the right side plate 402, and the second synchronous belt 423 is connected between the second drive wheel 421 and the second transmission wheel 422.

[0043] In the material feeding state, the left side plate 401 is vertically positioned upwards, and the right side plate 402 is horizontally positioned. Two single-sided sewn material pieces (such as cap pieces) are placed flat on the right side plate 402, and the vertically positioned left side plate 401 can be used as a placement and positioning reference. Typically, a workpiece sensing unit is provided below the right side plate 402, and correspondingly, a sensing hole is provided on the right side plate 402. When the workpiece sensing unit senses that the workpiece is placed on the right side plate 402 in place (the material piece covers the sensing hole), the second motor 42 drives the right side plate 402 to flip upwards.

[0044] When the material is clamped, the right side plate 402 flips upward to switch from a horizontal state to a vertical stack on the right side of the left side plate 401. At this time, the cap is clamped between the left side plate 401 and the right side plate 402.

[0045] In the pre-supported state, the left side plate 401 and the right side plate 402 are flipped downwards away from each other at an angle of 20-60 degrees, and both extend obliquely above the shaft 403 to form a V-shape; at this time, the two caps are respectively attached to the left side plate 401 and the right side plate 402, and open into a V-shape as the left side plate 401 and the right side plate 402 are flipped downwards;

[0046] In the supporting state, the left side plate 401 and the right side plate 402 continue to flip downwards away from each other until both are in a horizontal state. In this stage, a supporting mechanism is usually configured to press down on the material sheet and spread the two material sheets to the left and right. In the supporting state, the vacuum adsorption unit 411 releases the adsorption effect on the material sheet (or the piercing positioning unit releases the piercing positioning of the material sheet). Therefore, during the process of the left side plate 401 and the right side plate 402 continuing to flip downwards away from each other to a horizontal state, the material sheet will not flip with the left side plate 401 and the right side plate 402.

[0047] Subsequently, it is once again in the waiting state, i.e. the feeding state, and the left side plate 401 flips upward to switch from the horizontal state to the vertical state.

[0048] In this embodiment, the left side plate 401 is connected to a first ring portion 4011, and one end of the first transmission wheel 412 extends axially with a first extended portion. The first ring portion 4011 is sleeved on the first extended portion and fixedly connected. The first extended portion can be designed as a cylinder with an irregular cross-section on its circumference. The irregular cross-section refers to, for example, having two or more inclined surfaces on the circumference, preferably arranged at uniform intervals along the circumference. An internal threaded hole is provided on the first ring portion 4011, and a screw is inserted into the internal threaded hole with its inner end abutting against the inclined surface, thereby achieving mutual fixation between the first ring portion 4011 and the first extended portion. The left side plate 401 is also connected to a second ring portion 4012, and a first bearing is sleeved on the shaft 403. The second ring portion 4012 is sleeved on the first bearing.

[0049] In this embodiment, the right side plate 402 is connected to a third ring portion 4021, and one end of the second transmission wheel 422 extends axially with a second extended portion. The third ring portion 4021 is sleeved on the second extended portion and fixedly connected. Similarly, the second extended portion can be designed as a cylinder with an irregular cross-section on its circumference. The irregular cross-section refers to, for example, having two or more inclined surfaces on the circumference, preferably arranged at uniform intervals along the circumference. An internal threaded hole is provided on the third ring portion 4021, and a screw is inserted into the internal threaded hole with its inner end abutting against the inclined surface, thereby achieving mutual fixation between the third ring portion 4021 and the second extended portion. The right side plate 402 is also connected to a fourth ring portion 4022, and a second bearing is sleeved on the shaft 403. The fourth ring portion 4022 is sleeved on the second bearing.

[0050] Both the left side plate 401 and the right side plate 402 are provided with vacuum adsorption units 411 for adsorbing the sheet; or, both the left side plate 401 and the right side plate 402 are provided with puncture positioning units for piercing the sheet.

[0051] The shaft 403 is connected to a folding mechanism at the end facing the sewing machine head 50, which tilts / arcs the sewing edge between the two pieces of material upwards; the folding mechanism includes a clamping cylinder 43 and a flat-push cylinder 44. The clamping cylinder 43 is connected to a pair of clamps 431 that open and close along the X-axis, which are used to clamp the sewing edge between the two pieces of material. The flat-push cylinder 44 is connected to the clamping cylinder 43 to drive the clamping cylinder 43 to swing and move.

[0052] The clamping cylinder 43 is mounted on a cylinder seat 4301. The cylinder seat 4301 is provided with a connecting shaft 4302 and a connecting crank 4303. The telescopic rod of the push cylinder 44 is connected to the connecting shaft 4302 via a fisheye connector, which is rotatable relative to the connecting shaft 4302. The upper end of the connecting crank 4303 has a shaft hole, and it is rotatably fitted onto the end of the shaft 403 facing the sewing machine head 50 through the shaft hole. The end of the shaft 403 facing the sewing machine head 50 extends beyond the outer end of the second upright 4002.

[0053] When in use, after the clamp holds the sewing edge between the two pieces of material, the flat-push cylinder 44 drives the clamping cylinder 45 to swing and shift, so that the sewing edge between the two pieces of material is pushed and folded from a vertical downward state.

[0054] Furthermore, a clamping mechanism is provided below the left and right side plates. The clamping mechanism includes a flip-gripping cylinder 47 and two clamps 48 driven by the flip-gripping cylinder 47 to open and close. The two clamps are defined as the first clamp and the second clamp, respectively. In the clamping state, the flip-gripping cylinder drives the first clamp and the second clamp to flip upward and move closer together to further clamp the left and right side plates. After the clamping mechanism further clamps, the vacuum adsorption unit is controlled to pick up the sheet (or the piercing positioning unit is controlled to pierce the sheet), which improves the positioning firmness of the left and right side plates on the attached sheet, so that the sheet can be accurately flipped open with the left and right side plates. Then, it flips downward and moves away to reset.

[0055] The key design features of this invention are: firstly, two motors control the left and right side plates respectively, allowing for precise control of their rotation positions and enabling multiple different stroke controls, thus improving the accuracy of material feeding and support, and enhancing the quality of double-needle sewing operations; secondly, the use of a workpiece sensing unit enables automatic motor control, eliminating the need for manual start-up switches, simplifying operation, improving work efficiency, and reducing the risk of human error; thirdly, its compact and reasonable structure integrates a folding mechanism located on the shaft facing the sewing machine head, enabling... When clamped, the lower end of the fabric is held and positioned, which is beneficial for the overall centering and positioning of the fabric. At the same time, the folding mechanism can fold the seam between the two pieces of fabric, which is beneficial for the quality of subsequent double-needle stitching and results in better flatness. In addition, the clamping plate mechanism improves the clamping effect. After the clamping plate mechanism is further clamped, the vacuum adsorption unit can be controlled to hold the sheet (or the piercing positioning unit can be controlled to pierce the sheet), which improves the positioning firmness of the left and right side plates on the attached sheet, so that the sheet can be accurately opened according to the left and right side plates.

[0056] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A flip-plate mechanism for double-needle stitching, comprising a left side plate and a right side plate, wherein the left side plate and the right side plate are capable of flipping up and down around an axis, characterized in that, It also includes a first motor for driving the left side panel to flip up and down, and a second motor for driving the right side panel to flip up and down; In the feeding state, the left side plate is vertically positioned upwards, and the right side plate is horizontally positioned. When the material is clamped, the right side plate flips upward and switches from a horizontal state to a vertical stack on the right side of the left side plate; In the pre-supported state, the left side plate and the right side plate flip downwards away from each other, and both extend obliquely to the top of the shaft to form a V-shape; When the material is supported, the left side plate and the right side plate continue to flip downwards away from each other until both are in a horizontal state.

2. The flip-plate mechanism for double-needle stitching according to claim 1, characterized in that, The first motor is connected to a first drive wheel, a first transmission wheel, and a first synchronous belt; the first drive wheel is connected to the first motor, the first transmission wheel is rotatably sleeved on the shaft and connected to the left side plate, and the first synchronous belt is connected between the first drive wheel and the first transmission wheel; The second motor is connected to a second drive wheel, a second transmission wheel, and a second synchronous belt; the second drive wheel is connected to the second motor, the second transmission wheel is rotatably sleeved on the shaft and connected to the right side plate, and the second synchronous belt is connected between the second drive wheel and the second transmission wheel.

3. The flip-plate mechanism for double-needle stitching according to claim 2, characterized in that, The left side plate is connected to a first ring portion, and one end of the first transmission wheel extends axially to a first extension portion. The first ring portion is sleeved on the first extension portion and fixedly connected.

4. The flip-plate mechanism for double-needle stitching according to claim 3, characterized in that, The left side plate is also connected to a second ring, and a first bearing is sleeved on the shaft, with the second ring sleeved on the first bearing.

5. The flip-plate mechanism for double-needle stitching according to claim 2, characterized in that, The right side plate is connected to a third ring, and one end of the second transmission wheel extends axially to a second extension. The third ring is fitted onto the second extension and is fixedly connected.

6. The flip-plate mechanism for double-needle stitching according to claim 5, characterized in that, The right side plate is also connected to a fourth ring, and a second bearing is sleeved on the shaft, with the fourth ring sleeved on the second bearing.

7. The flip-plate mechanism for double-needle stitching according to claim 1 or 2, characterized in that, Both the left and right side plates are equipped with vacuum adsorption units for holding the sheet material. Alternatively, both the left and right side plates may be provided with puncture positioning units for piercing the sheet.

8. The flip-plate mechanism for double-needle stitching according to claim 1 or 2, characterized in that, The shaft is connected to the sewing machine head end to a folding mechanism that folds up the sewing edge between two pieces of material; the folding mechanism includes a clamping cylinder and a pushing cylinder. The clamping cylinder is connected to a pair of clamps that open and close along the X-axis, which are used to clamp the sewing edge between the two pieces of material. The pushing cylinder is connected to the clamping cylinder to drive the clamping cylinder to swing and move. The clamping cylinder is mounted on a cylinder seat, which is provided with a connecting shaft and a connecting crank. The telescopic rod of the flat-push cylinder is connected to the connecting shaft through a fisheye connector. The fisheye connector is rotatable relative to the connecting shaft. The upper end of the connecting crank is provided with a shaft hole, and it is rotatably sleeved on the shaft body facing the sewing machine head end through the shaft hole.

9. The flip-plate mechanism for double-needle stitching according to claim 1 or 2, characterized in that, A workpiece sensing unit is provided below the right side plate. Correspondingly, a sensing hole is provided on the right side plate. When the workpiece sensing unit senses that the workpiece has been placed on the right side plate, the second motor drives the right side plate to flip upward.

10. The flip-plate mechanism for double-needle stitching according to claim 1 or 2, characterized in that, A clamping mechanism is provided below the left side plate and the right side plate. The clamping mechanism includes a first clamp, a second clamp, and a flip-clamping cylinder. In the clamping state, the flip-clamping cylinder drives the first clamp and the second clamp to flip upward and move closer together to further clamp the left side plate and the right side plate.

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