Automatic unsewing of side seam device for spreading machine

Abstract

The application discloses an automatic edge sewing thread dismounting device of a spreading machine and belongs to the technical field of textile machines.The automatic edge sewing thread dismounting device comprises a first fixed arm, a second fixed arm and a rotating arm, the first fixed arm is connected with the second fixed arm perpendicularly, the second fixed arm is hinged with the rotating arm, the first fixed arm is connected with the rotating arm through a telescopic structure, a cloth guide cage and a cloth guide support are arranged on the rotating arm, the cloth guide cage comprises a base and an arc-shaped side wall which are connected with each other, one end of the cloth guide support is connected with the vertex of the cloth guide cage through a first connecting rod, and the other end of the cloth guide support is connected with the base of the cloth guide cage through a second connecting rod.Through the arrangement of the specific cloth guide cage and the cloth guide support, the edge sewing thread dismounting operation can be automatically performed while the spreading operation of the spreading machine is performed, the additional manpower is reduced, the low efficiency and the increased cost are avoided, and the production efficiency is conveniently and quickly improved.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, and in particular to an automatic sewing thread removal device for a fabric spreading machine. Background Technology

[0002] In the textile dyeing and finishing industry, to prevent fabric from curling inside the dyeing machine, the fabric is usually sewn before dyeing. After dyeing, the sewing thread needs to be removed when spreading the fabric. However, currently available fabric spreading machines do not have the function of removing the sewing thread. For example, Chinese utility model patent CN211077902U discloses a fabric spreading machine, which includes a machine base with a fabric spreading frame fixedly installed on the machine base and a fabric spreading roller rotatably connected to the fabric spreading frame. Using this type of fabric spreading machine requires the factory to arrange additional manpower or design suitable tools for the sewing thread removal operation, which is time-consuming and labor-intensive, affects production efficiency, adds extra steps, and further increases production costs. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a high-efficiency, low-cost automatic sewing device for fabric spreading machines.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The automatic sewing and unstitching device for the fabric spreading machine includes a first fixed arm, a second fixed arm, and a rotating arm; The first fixed arm is perpendicularly connected to the second fixed arm, the second fixed arm is hinged to the rotating arm, and the first fixed arm is connected to the rotating arm through a telescopic structure. The rotating arm is equipped with a guide cage and a guide support. The guide cage includes a base and an arc-shaped sidewall that are connected to each other. One end of the guide support is connected to the top of the guide cage through a first connecting rod, and the other end of the guide support is connected to the base of the guide cage through a second connecting rod.

[0005] The beneficial effects of this invention are as follows: by setting specific guide cages and fabric guide brackets, the sewing edge removal operation is automatically performed while the fabric spreading machine is spreading the fabric, reducing the need for additional manual labor to remove inefficient and costly sewing, and improving production efficiency in a convenient and quick manner. Attached Figure Description

[0006] Figure 1 The diagram shown is a structural schematic of the present invention; Figure 2 The diagram shown is a schematic diagram of the structure of the guide cloth cage of the present invention; Figure 3 The diagram shown is a schematic representation of the force direction principle of this invention; Labeling Explanation: 1. First fixed arm; 11. Arm slot; 12. Locking component; 2. Second fixed arm; 3. Rotating arm; 31. Fabric guide cage; 311. Base; 312. Arc-shaped side wall; 32. Fabric guide bracket; 33. First connecting rod; 34. Second connecting rod; 4. Telescopic structure; 41. Telescopic rod; 42. Cylinder; 5. Fabric arranger; 6. Fabric spreading machine roller. Detailed Implementation

[0007] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0008] The most crucial concept of this invention lies in the fact that by adding a fabric guide cage and a fabric guide bracket, the fabric spreading machine can automatically remove and reattach the edge seams.

[0009] Please refer to Figures 1 to 3 As shown, the automatic sewing and unstitching device for the fabric spreading machine of the present invention includes a first fixed arm, a second fixed arm, and a rotating arm. The first fixed arm is perpendicularly connected to the second fixed arm, the second fixed arm is hinged to the rotating arm, and the first fixed arm is connected to the rotating arm through a telescopic structure. The rotating arm is equipped with a guide cage and a guide support. The guide cage includes a base and an arc-shaped sidewall connected to each other. One end of the guide support is connected to the apex of the guide cage via a first connecting rod, and the other end of the guide support is connected to the base of the guide cage via a second connecting rod. In terms of position, the guide cage is located above the rotating arm, and the base is connected to the rotating arm.

[0010] Furthermore, the second fixed arm and the rotating arm are hinged together by a limiting pivot.

[0011] Furthermore, the arc-shaped sidewall can be a single structure or an arc-shaped frame structure formed by multiple arc-shaped rods.

[0012] As can be seen from the above description, the beneficial effects of the present invention are as follows: the fabric guide bracket is connected to the first connecting rod to form the fabric guide end, and the fabric with the sewing thread is introduced into the fabric guide cage; the fabric guide bracket is connected to the second connecting rod to form the fabric expansion end, and the sewing thread is further broken by the expansion end to achieve the purpose of automatic removal; through the cooperation of the telescopic structure and the rotating arm, the rotating arm can rotate within the limit range to realize the opening and retraction of the sewing thread removal device.

[0013] Furthermore, the first connecting rod is arranged vertically, and the second connecting rod is arranged horizontally. Preferably, the second connecting rod is perpendicular to the rotating arm.

[0014] As can be seen from the above description, the first connecting rod is set in the vertical direction and serves to guide the fabric into the arc-shaped fabric guide cage. The first connecting rod and the second connecting rod together fix and support the fabric guide bracket.

[0015] Furthermore, the connection between the fabric guide bracket and the first connecting rod is provided with an arc segment.

[0016] As can be seen from the above description, the fabric guide bracket and the first connecting rod form the fabric guide end. The connection is provided with an arc segment, which can avoid scratching the fabric surface during the fabric guide process and ensure the quality of the fabric surface. Furthermore, the base is circular, and the longest perimeter of the horizontal cross-section of the arc-shaped sidewall is greater than the width of the fabric.

[0017] Furthermore, the seam stitching is made of cotton thread.

[0018] As described above, the fabric with the edge stitching is placed on the fabric guide cage. The horizontal cross-section of the curved sidewall is circular, and its longest circumference is greater than the width of the fabric, which can stretch the fabric. The expanded end is directly opposite the position of the stitching. The stitching is made of cotton thread, which is relatively weak. The cotton thread can be broken by directly stretching it, thus achieving the effect of automatically removing the stitching.

[0019] Furthermore, the automatic sewing and unstitching device of the fabric spreading machine also includes a fabric spreader and a fabric spreading machine roller. The fabric spreader is located directly above the fabric guide cage, and the fabric guide cage is located between the fabric spreader and the fabric spreading machine roller. The length of the fabric spreading machine roller is greater than the width of the fabric.

[0020] As can be seen from the above description, the sewing seam of the fabric is stretched open and broken by the combined action of the traction force of the roller shaft of the fabric spreading machine, the arc-shaped side wall of the fabric guide cage, the expansion force of the fabric guide bracket and the second connecting rod forming the expansion end, thus completing the automatic sewing seam removal operation.

[0021] Furthermore, each end of the first fixed arm is provided with a locking arm groove, and a locking element is provided on the locking arm groove.

[0022] As described above, the automatic removal and sewing device for the fabric spreading machine is installed on the fabric spreading machine by engaging the arm slot with the vertical arm and locking it in place with the locking device.

[0023] Furthermore, a handle is provided at one end of the locking element.

[0024] Furthermore, the other end of the locking component is provided with a circular pressure plate, which is connected to the handle via a screw, and the screw is also provided with a nut.

[0025] As can be seen from the above description, a bolt connection method is provided to connect the entire device with the spreading machine. By rotating the handle, the screw rotates and the circular pressure plate is locked and fixed. The handle facilitates locking and fixing.

[0026] Furthermore, it also includes a support rod, the two ends of which are connected to the first fixed arm and the second fixed arm respectively, forming a triangular structure with the first fixed arm and the second fixed arm.

[0027] As can be seen from the above description, triangular support rods are welded diagonally below the first and second fixed arms to further ensure the stability of the structure.

[0028] Furthermore, the telescopic structure includes a telescopic rod and a cylinder connected to each other. The telescopic rod is hinged to the rotating arm via a swing shaft connecting rod, and the cylinder is hinged to the first fixed arm via a double-ear support.

[0029] As described above, the cylinder is equipped with an air inlet and an air outlet, which are connected to a compressed air pipeline. The air intake is controlled by a switch to indirectly control the extension and retraction of the telescopic rod, thereby driving the rotation of the rotating arm to open and retract the device. When open, the edge stitching is removed; when the edge stitching is removed, the device is retracted, without affecting the normal operation of the fabric spreading machine's fabric cutting and opening function.

[0030] Furthermore, the guide cage is provided with a first support tube, a second support tube and a third support tube. The first support tube and the second support tube are located on the base and are on the same horizontal plane as the base. The first support tube and the second support tube are perpendicular to each other and their intersection point is located at the center point of the base. One end of the third support tube is connected to the apex of the guide cage, and the other end is located at the center point of the base.

[0031] As can be seen from the above description, by setting a first support pipe, a second support pipe and a third support pipe inside the guide cage, with one end of the third support pipe connected to the apex of the guide cage and the other end connected to the intersection of the first support pipe and the second support pipe, the stability of the guide cage structure can be ensured and the guide cage can be supported.

[0032] Please refer to Figures 1 to 3 As shown, Embodiment 1 of the present invention is as follows: An automatic sewing and unstitching device for a fabric spreading machine includes a first fixed arm 1, a second fixed arm 2, a rotating arm 3, a support rod, a fabric spreader 5, and a fabric spreading machine roller 6. The main body is made of stainless steel. The two ends of the support rod are connected to the first fixed arm 1 and the second fixed arm 2 respectively, forming a triangular structure with the first fixed arm 1 and the second fixed arm 2. The two ends of the first fixed arm 1 are respectively provided with arm-locking grooves 11, and locking parts 12 are provided on the arm-locking grooves 11. One end of the locking part 12 is provided with a handle. The first fixed arm 1 and the second fixed arm 2 are vertically connected. The second fixed arm 2 and the rotating arm 3 are hinged through a limiting pivot. The first fixed arm 1 is connected to the rotating arm 3 through a telescopic structure 4. The telescopic structure 4 includes a telescopic rod 41 and a cylinder 42 connected to each other. A compressed air pipe is installed and connected to the cylinder 42. The telescopic rod 41 is hinged to the rotating arm 3 through a swing shaft connecting rod. The cylinder 42 is hinged to the first fixed arm 1 through a double-ear support. The rotating arm 3 is equipped with a fabric guide cage 31 and a fabric guide bracket 32. The fabric guide cage 31 includes a base 311 and an arc-shaped sidewall 312 connected to each other. The base 311 is circular, and the longest circumference of the horizontal cross-section of the arc-shaped sidewall 312 is greater than the width of the fabric. The fabric guide cage 31 is equipped with a first support tube, a second support tube, and a third support tube. The first and second support tubes are located on the base 311 and are on the same horizontal plane as the base 311. The first and second support tubes are perpendicular to each other, and their intersection point is located at the center point of the base 311. One end of the third support tube is connected to the apex of the fabric guide cage 31, and the other end is located at the center point of the base 311. The fabric spreader 5 is located directly above the fabric guide cage 31, and the length of the fabric spreading machine roller 6 is greater than the width of the fabric. One end of the fabric guide bracket 32 ​​is connected to the apex of the fabric guide cage 31 via a first connecting rod 33. The connection between the fabric guide bracket 32 ​​and the first connecting rod 33 is provided with an arc segment. The other end of the fabric guide bracket 32 ​​is connected to the base 311 of the fabric guide cage 31 via a second connecting rod 34. The first connecting rod 33 is arranged in a vertical direction, and the second connecting rod 34 is arranged in a horizontal direction.

[0033] The working principle of this device is as follows: the clamping arm slot 11 is clamped into the upright arm position of the fabric spreading machine and the handle is turned to lock and fix it. When it is necessary to remove the stitching, the telescopic rod is extended by the cylinder 42, and the fabric is passed through the fabric spreader 5 and introduced from one end of the fabric guide bracket 32 ​​to the fabric guide cage 31. Under the combined action of the traction force of the fabric spreading machine roller 6, the fabric guide cage 31 and the fabric guide bracket 32, the stitching is opened, causing the stitching of the fabric to break, thereby completing the automatic removal of the stitching. When it is not needed, the telescopic rod 41 is retracted by the cylinder 42, which drives the rotating arm 3 to rotate and retract.

[0034] In summary, the present invention provides an automatic edge seam removal device for a fabric spreading machine. Currently, fabric spreading machines on the market do not have the function of removing edge seams. This device can achieve a breakthrough in the automatic removal of edge seams on fabric spreading machines. By setting up a specific fabric guide cage and fabric guide bracket, the edge seams can be automatically removed on the fabric spreading machine, avoiding manual removal, which is inefficient and increases costs. By designing a locking arm groove and locking components to flexibly fix the device, the problem of the inability to adjust the height of the device by traditional welding methods is solved. By setting up a telescopic structure, the telescopic rod can be used in conjunction with the rotating arm to realize the opening and retraction control of the device without affecting the normal operation of the fabric spreading machine.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An apparatus for automatically unsewing a selvedge thread on a spreader, characterized by, It includes a fabric spreader, a fabric spreading machine roller, a first fixed arm, a second fixed arm, and a rotating arm; The first fixed arm is perpendicularly connected to the second fixed arm, the second fixed arm is hinged to the rotating arm, and the first fixed arm is connected to the rotating arm through a telescopic structure. The rotating arm is equipped with a guide cage and a guide support. The guide cage includes a base and an arc-shaped sidewall connected to each other. One end of the guide support is connected to the apex of the guide cage through a first connecting rod, and the other end of the guide support is connected to the base of the guide cage through a second connecting rod. Under the combined action of the traction force of the fabric spreading machine roller, the expansion force of the fabric guide cage and the fabric guide bracket, the sewing seam is opened, causing the sewing seam of the fabric to break.

2. The automatic unhemming device of a spreader according to claim 1, wherein The first connecting rod is arranged vertically, and the second connecting rod is arranged horizontally.

3. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The connection between the fabric guide bracket and the first connecting rod is provided with an arc segment.

4. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The base is circular, and the longest perimeter of the horizontal cross-section of the arc-shaped sidewall is greater than the width of the fabric.

5. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The fabric spreader is positioned directly above the fabric guide cage, and the fabric guide cage is positioned between the fabric spreader and the fabric spreading machine roller. The length of the fabric spreading machine roller is greater than the width of the fabric.

6. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The first fixed arm has locking grooves at both ends, and locking elements are provided on the locking grooves.

7. The automatic sewing thread removal device for a fabric spreading machine according to claim 6, characterized in that, One end of the locking element is provided with a handle.

8. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, It also includes a support rod, the two ends of which are connected to the first fixed arm and the second fixed arm respectively, and together with the first fixed arm and the second fixed arm, they form a triangular structure.

9. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The telescopic structure includes a telescopic rod and a cylinder connected to each other. The telescopic rod is hinged to the rotating arm via a swing shaft connecting rod, and the cylinder is hinged to the first fixed arm via a double-ear support.

10. The automatic sewing thread removal device for a fabric spreading machine according to claim 1, characterized in that, The guide cage is provided with a first support tube, a second support tube and a third support tube. The first support tube and the second support tube are located on the base and on the same horizontal plane as the base. The first support tube and the second support tube are perpendicular to each other and their intersection point is located at the center point of the base. One end of the third support tube is connected to the apex of the guide cage and the other end is located at the center point of the base.

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