Comprehensive feeding sewing machine and control method

Abstract

The invention discloses a comprehensive feeding sewing machine and a control method. The comprehensive feeding sewing machine comprises a bottom plate, a stand column shuttle table, a lower shaft, a coupler and a rotary driving part. The stand column shuttle table is rotationally installed on the bottom plate. The lower shaft penetrates through the stand column shuttle table and is in transmission connection with a rotating shuttle on the stand column shuttle table; the transmission assembly comprises a first universal coupling and a second universal coupling, and the first universal coupling and the second universal coupling are connected in series and connected with the lower shaft; a preset angle P is formed between the adjusting mode of the first universal coupling during self-adaptive adjustment and the adjusting direction of the second universal coupling during self-adaptive adjustment, 90 degrees > = P > 0 degree, the rotary driving part is installed on the bottom plate and is in transmission connection with the stand column shuttle table, and the rotary driving part can drive the stand column shuttle table to swing relative to the bottom plate. And the transmission assembly is deformed. In this way, the lower shaft can automatically swing along with the stand column shuttle table, and therefore automatic control over swing of the stand column shuttle table is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to sewing machines, and in particular relates to a composite feeding sewing machine and a control method thereof. Background Art

[0002] Compound feed sewing machines are the main sewing equipment for tubular products such as luggage, car seat headrests, etc. However, due to the limited lifting height of the presser foot and needle, it is difficult to insert tubular sewing materials into the column shuttle table. For this reason, other models need to be purchased to complete subsequent processes, which leads to the expansion of production sites, increased equipment costs, and reduced overall operational efficiency.

[0003] Currently, the compound feed sewing machines on the market generally adopt a tiltable column shuttle design, which uses a purely mechanical structure to achieve synchronous tilting of the column shuttle and the lower shaft that drives the rotary hook, so as to manually place and remove the tubular sewing material. However, since the lower shaft is always connected to the main shaft through the transmission assembly, the column shuttle can only be tilted with the lower shaft as the rotation center line. Due to the connection relationship between the lower shaft and other components, the mechanical structure that drives the column shuttle to tilt must rely on purely manual operation, resulting in a complex structure and difficult debugging. In addition, the column shuttle needs to be repeatedly tilted and reset manually before and after each sewing, which is not only inefficient, but also increases the labor intensity of the operator, restricting production efficiency. Summary of the Invention

[0004] In view of this, it is necessary to provide a composite feeding sewing machine and a control method for solving the above technical problems.

[0005] A compound feed sewing machine, the compound feed sewing machine comprising:

[0006] base plate;

[0007] A column shuttle platform is rotatably mounted on the bottom plate, and the column shuttle platform includes a rotary hook;

[0008] A lower shaft is connected to the rotary hook and is used to drive the rotary hook to rotate;

[0009] A transmission assembly comprising a first universal joint and a second universal joint, wherein the first universal joint and the second universal joint are connected in series and connected to the lower shaft, and the second universal joint is capable of driving the lower shaft to rotate via the first universal joint; wherein a preset angle P is formed between an adjustment direction of the first universal joint during adaptive adjustment and an adjustment direction of the second universal joint during adaptive adjustment, and 90° ≥ P > 0°;

[0010] A rotary drive component is installed on the bottom plate and is transmission-connected to the column shuttle platform. The rotary drive component can drive the column shuttle platform to swing relative to the bottom plate and cause the transmission component to deform.

[0011] It can be understood that by utilizing the adaptive adjustment of the universal coupling, the lower shaft can automatically follow the swing of the column shuttle platform, thereby realizing the automatic control of the swing of the column shuttle platform. This not only simplifies the structure required for the swing design of the column shuttle platform and facilitates system debugging, but also ensures the accuracy of the swing angle of the column shuttle platform, thereby effectively improving production efficiency, while also reducing the labor intensity of the operator.

[0012] In one embodiment, the preset angle P is configured to be 90°.

[0013] In one embodiment, one of the first universal joint and the second universal joint is convex and forms a connecting square head, and the other is concave and forms a square hole;

[0014] In the axial direction of the lower shaft, the connecting square head is plug-fitted into the square hole, so that the first universal joint and the second universal joint are connected in series.

[0015] It can be understood that the use of plug-in cooperation between the connecting square head and the square hole to achieve the series connection between the first universal joint and the second universal joint has the advantages of compact structure and smooth transmission. During this process, the contact plane between the connecting square head and the square hole can evenly transmit torque, reduce impact and wear, and at the same time ensure the reliable centering of the second universal joint when driving the first universal joint to rotate, avoiding offset or jamming.

[0016] In one embodiment, an eccentric cam is mounted on the rotating shaft of the rotary drive member;

[0017] The column shuttle platform is connected with a driving tooth fork, which is sleeved on the eccentric cam and abuts against the eccentric cam to limit the position, thereby realizing the transmission connection between the rotary drive member and the column shuttle platform.

[0018] In one embodiment, in the axial direction of the rotating shaft, the eccentric cam portion extends out of the driving tooth fork and forms an extended protrusion;

[0019] The extending protrusion is connected to the rotating shaft portion via a fixing piece, and the fixing piece abuts against the driving yoke in the axial direction of the rotating shaft portion to limit position.

[0020] It can be understood that while the fixing part fixes the eccentric cam to the rotating shaft, it can also limit the assembly position of the driving fork on the eccentric cam. This can simplify the structure, reduce the use of additional positioning parts, and reduce the complexity of assembly; on the other hand, it can also improve the transmission accuracy and reliability between the eccentric cam and the driving fork, and avoid loosening or offset during movement.

[0021] In one embodiment, in the height direction of the column shuttle, the eccentric cam is arranged above the lower shaft.

[0022] It can be understood that setting the rotation center line of the column shuttle when it swings above the lower shaft can enable the column shuttle to obtain a larger swing angle, thus providing the operator with a larger operating space to insert the tubular product into the column shuttle, which facilitates operation.

[0023] In one embodiment, the composite feed sewing machine further includes a control device electrically connected to the rotary drive member and configured to send a first control signal, a second control signal, and a third control signal to the rotary drive member;

[0024] When the rotary driving member receives the first control signal, the rotary driving member drives the column shuttle to switch between the starting position and the target position;

[0025] When the rotary driving member receives the second control signal, the rotary driving member drives the column shuttle to switch between the starting position and the first working position. In the first working position, the feed dog on the column shuttle is in a state where the front is low and the back is high.

[0026] When the rotary drive member receives the third control signal, the rotary drive member drives the column shuttle to switch between the starting position and the second working position. In the second working position, the feed dog on the column shuttle is in a state of high front and low back.

[0027] It can be understood that, by controlling the rotary drive member through the above-mentioned control device, the integrated feeding sewing machine can adaptively adjust the state of the feed dog on the column shuttle table to cope with the situation of sewing wrinkles or misalignment of the lower cloth. In this way, the disassembly and adjustment of the feed dog mounting structure can be avoided, which saves time and effort and further improves production efficiency.

[0028] The present application also provides a control method, which includes the following steps:

[0029] Providing the compound feed sewing machine described above;

[0030] Controlling the rotary drive member to drive the column shuttle to swing to the target position and deforming the transmission assembly;

[0031] The rotary drive member is controlled to drive the column shuttle to return to the initial position and reset the transmission component.

[0032] In one embodiment, the control method further comprises the following steps:

[0033] Control the presser foot assembly and the needle to rise and separate from the column shuttle.

[0034] It can be understood that the presser foot assembly and the needle are controlled to rise and separate from the column shuttle, so that the presser foot assembly and the needle avoid the column shuttle, thereby preventing the presser foot assembly and the needle from affecting the swing of the column shuttle.

[0035] In one embodiment, the control method further comprises the following steps:

[0036] The rotary driving member is controlled to drive the column shuttle platform to swing to the first working position; or, the rotary driving member is controlled to drive the column shuttle platform to swing to the second working position.

[0037] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0038] The integrated feed sewing machine and control method for which protection is sought in this application utilize the adaptive adjustment of the universal coupling so that the lower shaft can automatically follow the swing of the column shuttle, thereby realizing the automated control of the swing of the column shuttle. This not only simplifies the structure required for the design of the swing of the column shuttle and facilitates system debugging, but also ensures the accuracy of the swing angle of the column shuttle, thereby effectively improving production efficiency while also reducing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is a schematic structural diagram of the integrated feed sewing machine provided in this application.

[0041] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0042] Figure 3 This is a partial exploded view of the compound feed sewing machine provided in this application.

[0043] Figure 4 This is a structural diagram of the column shuttle platform of this application when it is in the initial position.

[0044] Figure 5 This is a structural diagram of the column shuttle platform of this application when it is in the target position.

[0045] Figure 6 This is a structural diagram of the post shuttle platform of the present application when the feed dog is in a state of low front and high back.

[0046] Figure 7 This is a structural diagram of the post shuttle platform of the present application when the feed dog is in a state of high front and low back.

[0047] Figure 8 This is a structural diagram of the column shuttle platform of the present application when it swings and causes the transmission component to deform.

[0048] Figure 9 Schematic diagram of the structure of the transmission assembly in this application.

[0049] Figure 10 This is a schematic structural diagram of the eccentric cam in this application.

[0050] Figure 11 This is a schematic diagram of the structure of the driving fork in this application.

[0051] Figure 12 This is a flow chart of the control method provided in this application.

[0052] Figure numerals: 100, compound feed sewing machine; 10, bottom plate; 20, column shuttle; 210, feed dog; 201, first screw; 202, second screw; 21, rotating base; 211, waist-shaped hole; 22, rotating pin; 30, lower shaft; 40, transmission assembly; 41, first universal joint; 411, square hole; 42, second universal joint; 421, connecting square head; 50, rotating drive member; 501, motor bracket; 51, rotating shaft; 511, fixing member; 52, eccentric cam; 521, extending protrusion; 522, main body; 53, driving tooth fork; 531, tooth fork body; 532, support arm; 5321, mounting hole; 5322, bolt; 60, presser foot assembly; 70, needle; 80, clutch. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] It should be noted that when an element is referred to as being “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “fixed to” another element, it may be directly fixed to the other element or there may be an intermediate element.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] like Figures 1 to 5 、 Figure 8 As shown, the integrated feed sewing machine 100 provided by the present application includes a base plate 10, a column shuttle 20, a lower shaft 30, a transmission assembly 40 and a rotary drive member 50. The column shuttle 20 is rotatably mounted on the base plate 10, and the column shuttle 20 includes a rotary hook (not shown); the lower shaft 30 is connected to the rotary hook for driving the rotary hook to rotate; the transmission assembly 40 includes a first universal joint 41 and a second universal joint 42, the first universal joint 41 and the second universal joint 42 are connected in series. It is connected to the lower shaft 30, and the second universal joint 42 can drive the lower shaft 30 to rotate through the first universal joint 41; wherein, a preset angle P is formed between the adjustment mode of the first universal joint 41 during adaptive adjustment and the adjustment direction of the second universal joint 42 during adaptive adjustment, 90°≥P>0°; the rotary drive member 50 is installed on the base plate 10 and is transmission-connected to the column shuttle platform 20, and the rotary drive member 50 can drive the column shuttle platform 20 to swing relative to the base plate 10 and cause the transmission assembly 40 to deform.

[0057] From the above, it can be seen that the integrated feed sewing machine 100 of the present application utilizes the adaptive adjustment of the universal coupling so that the lower shaft 30 can automatically follow the swing of the column shuttle 20, thereby realizing the automatic control of the swing of the column shuttle 20. This not only simplifies the structure required for the swing design of the column shuttle 20 and facilitates system debugging, but also ensures the accuracy of the swing angle of the column shuttle 20 when it swings, thereby effectively improving production efficiency, while also reducing the labor intensity of the operator.

[0058] It should be noted that the transmission assembly 40 of the present application is not limited to the first universal joint 41 and the second universal joint 42 described above. For those skilled in the art, at least one universal joint can be connected in series on the basis of the original first universal joint 41 and the second universal joint 42, which will not be elaborated here.

[0059] like Figure 3 As shown, in one embodiment, a rotating base 21 is connected to the column shuttle platform 20 , and the rotating base 21 is rotatably connected to the bottom plate 10 through a rotating pin 22 , thereby realizing the rotating assembly of the column shuttle platform 20 on the bottom plate 10 .

[0060] like Figure 3 As shown, in this embodiment, the rotating base 21 is mounted on the column shuttle 20, and the rotating base 21 and the column shuttle 20 are connected by a first screw 201. Here, the rotating base 21 is provided with four waist-shaped holes 211, each of which is threaded with a first screw 201 and fixed to the column shuttle 20. In this process, the structural characteristics of the waist-shaped holes 211 can be utilized to adjust the installation position of the rotating base 21 on the column shuttle 20, thereby facilitating the assembly of the rotating base 21 on the base plate 10.

[0061] like Figure 3 As shown, in this embodiment, the number of rotating pins 22 is configured to be two, and the two rotating pins 22 are symmetrically arranged on the two symmetrical sides of the rotating base 21. Specifically, the rotating pin 22 can be inserted from the base plate 10 and extended into the rotating base 21, and the second screw 202 screwed on the base plate 10 is tightened and limited with the part of the rotating pin 22 located in the base plate 10 to achieve the fixation of the rotating pin 22 on the base plate 10.

[0062] like Figure 1 、 Figure 2 、 Figure 8 and Figure 9 As shown, in one embodiment, the preset angle P between the adjustment direction of the first universal joint 41 during adaptive adjustment and the adjustment mode of the second universal joint 42 during adaptive adjustment is configured to be 90°. It is understood that in other embodiments, the preset angle P can also be configured to other angles such as 88°, 89°, 91°, etc., as long as the deformation of the transmission assembly 40 can meet the use requirement of the lower shaft 30 swinging along with the column shuttle 20. This will not be elaborated here.

[0063] like Figure 9 As shown, in one embodiment, one of the first universal joint 41 and the second universal joint 42 is protruding and formed with a connecting square head 421, while the other is recessed and formed with a square hole 411. In the axial direction of the lower shaft 30, the connecting square head 421 is plugged into the square hole 411 to connect the first universal joint 41 and the second universal joint 42 in series. Here, the connecting square head 421 is disposed through the square hole 411, which makes the transmission assembly 40 compact and stable. During this process, the contact surface between the connecting square head 421 and the square hole 411 can evenly transmit torque, reducing impact and wear, while ensuring reliable centering during the rotation of the second universal joint 42 and the first universal joint 41, avoiding offset or jamming.

[0064] like Figure 9As shown, in this embodiment, the connecting square head 421 is provided on the second universal joint 42, and the square hole 411 is provided on the first universal joint 41. It is understood that in other embodiments, the connecting square head can also be provided on the first universal joint 41, and the square hole can be provided on the second universal joint 42, which will not be elaborated here.

[0065] like Figure 1 、 Figure 8 As shown, in this embodiment, a clutch 80 is connected to the end of the second universal coupling 42 away from the first universal coupling 41. By utilizing the structural characteristics of the clutch 80, the clutch 80 can be used to control the rotation or stop of the lower shaft 30 to meet the operating requirements of the compound feed sewing machine 100. Here, the specific structure and working principle of the clutch 80 can adopt conventional methods in the prior art and will not be elaborated here.

[0066] like Figure 1 、 Figure 2 and Figure 8 As shown, in one embodiment, an eccentric cam 52 is mounted on the rotating shaft 51 of the rotary drive member 50; a driving fork 53 is mounted on the column shuttle 20. The driving fork 53 is mounted on the eccentric cam 52 and abuts against the eccentric cam 52 to limit the position, thereby realizing a transmission connection between the rotary drive member 50 and the column shuttle 20. The composite feed sewing machine 100 of this embodiment drives the eccentric cam 52 to rotate by the rotary drive member 50, and utilizes its eccentric structure to push the driving fork 53 to reciprocate, thereby converting the rotary motion into the swing of the driving fork 53, and ultimately accurately controlling the swing angle of the column shuttle 20. This mechanical transmission method has a compact structure and reliable transmission, which not only ensures the accuracy of the swing control of the column shuttle 20, but also simplifies the design of the structure required for the swing of the column shuttle 20, and improves the response speed and control accuracy of the swing of the column shuttle 20.

[0067] In this embodiment, the rotary drive member 50 is configured as a stepper motor, which can be mounted on the base plate 10 via a motor bracket 501. By utilizing the structural characteristics of the stepper motor, the swing angle of the column shuttle 20 can be precisely controlled. It is understood that in other embodiments, the rotary drive member 50 can also be configured as a servo motor, a steering gear, a rotary cylinder, or other power accessory that provides the rotary drive force, which will not be discussed in detail here.

[0068] like Figure 1 、 Figure 2As shown, in one embodiment, an eccentric cam 52 is positioned above the lower shaft 30 in the height direction of the column shuttle 20. This allows the column shuttle 20 to achieve a larger swing angle, thereby providing the operator with more operating space to insert the tubular product into the column shuttle 20, thereby facilitating operation. Here, the maximum swing angle of the column shuttle 20 under the control of the rotary drive member 50 can be 15°, 16°, 20°, etc., and the specific setting can be determined according to the actual use requirements, which will not be elaborated here.

[0069] like Figure 2 、 Figure 10 and Figure 11 As shown, in one embodiment, the eccentric cam 52 partially extends out of the drive fork 53 in the axial direction of the rotating shaft portion 51 and forms an extended protrusion 521. The extended protrusion 521 is connected to the rotating shaft portion 51 via a fixing member 511. The fixing member 511 also abuts against the drive fork 53 in the axial direction of the rotating shaft portion 51 to limit its position. In other words, the fixing member 511 of this embodiment not only secures the eccentric cam 52 to the rotating shaft portion 51, but also limits the assembly position of the drive fork 53 on the eccentric cam 52. This simplifies the structure, reduces the use of additional positioning parts, and reduces assembly complexity. It also improves the transmission accuracy and reliability between the eccentric cam 52 and the drive fork 53, preventing loosening or deviation during movement. Here, the number of fixing members 511 is configured to be two, and the fixing members 511 can be configured as bolts, screws, etc.

[0070] like Figure 11 As shown, in one embodiment, the driving tine 53 includes a tine body 531 and a support arm 532. The support arm 532 extends along the axial direction of the rotating shaft portion 51 and is integrally connected to the tine body 531. This enhances the structural rigidity of the driving tine 53, prevents deformation of the driving tine 53 during transmission, ensures accurate and reliable power transmission from the eccentric cam 52, and reduces motion backlash. Here, the tine body 531 is mounted on the eccentric cam 52 and abuts against the eccentric cam 52 to limit its position. Specifically, the tine body 531 can be mounted on the main body 522 of the eccentric cam 52.

[0071] like Figure 3As shown, in this embodiment, the support arm 532 is threadedly connected to the column shuttle base 20. Specifically, the support arm 532 is fixed to the rotating base 21 using bolts 5322, thereby facilitating the assembly of the driving fork 53 on the column shuttle base 20. Here, the support arm 532 is provided with mounting holes 5321. Two bolts 5322, after respectively passing through the corresponding mounting holes 5321, are screwed together with the rotating base 21 to achieve the assembly and fixation of the support arm 532 on the rotating base 21. This facilitates the assembly between the fork body 531 of the driving fork 53 and the main body 522 of the eccentric cam 52, and ensures the stability of the assembly of the driving fork 53 on the rotating base 21. It is understood that in other embodiments, other connecting members such as screws and threaded rods can also be used to fix the support arm 532 to the rotating base 21.

[0072] In one embodiment, the compound feed sewing machine 100 further includes a control device (not shown). The control device is electrically connected to the rotary drive member 50 and is configured to send a first control signal, a second control signal, and a third control signal to the rotary drive member 50 to control the operation of the rotary drive member 50 and thereby control the swing of the column shuttle 20. In other words, the operator can control the swing of the column shuttle 20 by triggering the control device three times. Here, three independent buttons can be provided on the machine head (not shown) of the compound feed sewing machine 100 to control which control signals the control device sends to the rotary drive member 50.

[0073] like Figure 4 、 Figure 5 and Figure 12 As shown, when the rotary drive member 50 receives the first control signal, it drives the column shuttle 20 to switch between the starting position and the target position, thereby controlling the loading and unloading of material on the column shuttle 20. Here, the target position specifically refers to the position where the column shuttle 20 can be swung to allow the operator to insert a tubular sewing material (not shown) onto the column shuttle 20.

[0074] like Figure 4 、 Figure 5As shown, in this embodiment, the compound feed sewing machine 100 further includes a presser foot assembly 60 and a needle 70. When the tubular sewing material needs to be placed on the column shuttle 20, before the control device is triggered to send a first control signal to the column shuttle 20 and the rotary drive member 50, the presser foot assembly 60 and the needle 70 are raised and separated from the column shuttle 20. Specifically, the needle 70 is driven to rise by controlling the rotation angle of the main shaft (not shown) in the compound feed sewing machine 100, and the presser foot cylinder (not shown) is used to drive the presser foot assembly 60 to rise. After the control device sends the first control signal to the rotary drive member 50 and drives the column shuttle 20 to return to its original position, the presser foot assembly 60 and the needle 70 are lowered to their working position. In other words, after the control device of this embodiment is triggered, the presser foot assembly 60 and the needle 70 are first raised and separated from the column shuttle 20 to prevent the presser foot assembly 60 and the needle 70 from colliding with the subsequent swinging column shuttle 20.

[0075] like Figure 6 、 Figure 12 As shown, when the rotary drive member 50 receives the second control signal, it drives the post shuttle 20 to switch between the starting position and the first working position. In the first working position, the feed dog 210 on the post shuttle 20 is positioned low in the front and high in the back. This allows the combined feed sewing machine 100 to effectively resolve the problem of wrinkling of the tubular sewing material on the post shuttle 20. Here, the rotary drive member 50 can drive the post shuttle 20 to swing clockwise by a preset angle Q of 0.6°, 0.7°, 0.8°, or 0.9°, thereby shifting the feed dog 210 on the post shuttle 20 to the low-front-high-back position while maintaining coordination with the presser foot assembly 60 and needle 70. Of course, the specific rotation angle of the eccentric cam 52 controlled by the rotary drive member 50 after receiving the second control signal can be determined through a limited number of experiments and corresponding calculations, and will not be elaborated here.

[0076] like Figure 7 、 Figure 12 As shown, when the rotary drive member 50 receives the third control signal, it drives the post shuttle 20 to switch between the starting position and the second working position. In the second working position, the feed dog 210 on the post shuttle 20 is in a state with the front higher and the back lowered, thereby enabling the compound feed sewing machine 100 to smoothly resolve the problem of misalignment of the lower fabric. Here, the rotary drive member 50 can drive the post shuttle 20 to swing counterclockwise by a preset angle Q of 0.6°, 0.7°, 0.8°, 0.9°, etc., thereby shifting the feed dog 210 on the post shuttle 20 to a state with the front higher and the back lowered while maintaining coordination with the presser foot assembly 60 and the needle 70. Of course, the rotation angle of the eccentric cam 52 controlled by the rotary drive member 50 after receiving the third control signal can also be determined through a limited number of experiments and corresponding calculations, which will not be elaborated here.

[0077] It should be noted that when the integrated feed sewing machine 100 of the present application is sewing tubular sewing materials, the operator can determine whether the tubular sewing materials on the column shuttle 20 are in a wrinkled or misplaced state by visual observation, and then manually control the corresponding buttons on the head of the integrated feed sewing machine 100 to achieve automatic adjustment of the column shuttle 20.

[0078] From the above, it can be seen that the integrated feed sewing machine 100 of the present application utilizes the adaptive adjustment performance of the transmission component 40, so that when the column shuttle 20 is in the first working position or the second working position, the second universal coupling 42 can also drive the lower shaft 30 to rotate through the first universal coupling 41, and enable the integrated feed sewing machine 100 to perform normal sewing work; at the same time, by utilizing the state of the feed dog 210 corresponding to the column shuttle 20 when the column shuttle 20 is in the first working position or the second working position, the situation of sewing wrinkles or lower misalignment can be effectively solved. In this way, compared with the prior art of disassembly and adjustment of the feed dog 210 installation structure, it saves time and effort and further improves production efficiency.

[0079] like Figure 12 As shown, the present application also provides a control method, which includes the following steps:

[0080] Providing the compound feed sewing machine 100 described above;

[0081] Controlling the rotary drive member 50 to drive the column shuttle 20 to swing to the target position and deforming the transmission assembly 40;

[0082] Control the presser foot assembly 60 and the needle 70 to rise and separate from the column shuttle 20;

[0083] Control the rotary drive member 50 to drive the column shuttle 20 to return to the initial position and reset the transmission assembly 40;

[0084] Control the presser foot assembly 60 and the needle 70 to descend to the working position.

[0085] In one embodiment, the control method further includes the following steps:

[0086] The rotary driving member 50 is controlled to drive the column shuttle platform 20 to swing to the first working position; or, the rotary driving member 50 is controlled to drive the column shuttle platform 20 to swing to the second working position.

[0087] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. Any appropriate changes and modifications to the above embodiments are intended to fall within the scope of protection claimed by the present invention as long as they are within the spirit of the present invention.

Claims

1. A compound feed sewing machine, characterized in that, The compound feed sewing machine (100) comprises: bottom plate (10); A column shuttle platform (20) is rotatably mounted on the bottom plate (10), and the column shuttle platform (20) includes a rotary shuttle; A lower shaft (30) is connected to the rotary hook and is used to drive the rotary hook to rotate; A transmission assembly (40) includes a first universal joint (41) and a second universal joint (42), wherein the first universal joint (41) and the second universal joint (42) are connected in series and connected to the lower shaft (30), and the second universal joint (42) can drive the lower shaft (30) to rotate through the first universal joint (41); wherein a preset angle P is formed between an adjustment direction of the first universal joint (41) during adaptive adjustment and an adjustment direction of the second universal joint (42) during adaptive adjustment, and 90°≥P>0°; A rotary drive member (50) is mounted on the base plate (10) and is in transmission connection with the column shuttle platform (20), and the rotary drive member (50) can drive the column shuttle platform (20) to swing relative to the base plate (10) and cause the transmission component to deform.

2. The compound feed sewing machine according to claim 1, characterized in that: The preset angle P is configured to be 90°.

3. The compound feed sewing machine according to claim 1, characterized in that: One of the first universal joint (41) and the second universal joint (42) is protruding and forms a connecting square head (421), while the other is recessed and forms a square hole (411); In the axial direction of the lower shaft (30), the connecting square head (421) is plug-fitted into the square hole (411) so that the first universal joint (41) and the second universal joint (42) are connected in series.

4. The compound feed sewing machine according to claim 1, characterized in that: An eccentric cam (52) is mounted on the rotating shaft (51) of the rotary drive member (50); A driving fork (53) is connected to the column shuttle platform (20), and the driving fork (53) is sleeved on the eccentric cam (52) and abuts against the eccentric cam (52) to limit the position, thereby realizing the transmission connection between the rotary drive member (50) and the column shuttle platform (20).

5. The compound feed sewing machine according to claim 4, characterized in that: In the axial direction of the rotating shaft portion (51), the eccentric cam (52) partially extends out of the driving tooth fork (53) and forms an extended protrusion (521); The extending protrusion (521) is connected to the rotating shaft portion (51) via a fixing member (511), and the fixing member (511) abuts against the driving tooth fork (53) in the axial direction of the rotating shaft portion (51) to limit the position.

6. The compound feed sewing machine according to claim 4, characterized in that: In the height direction of the column shuttle platform (20), the eccentric cam (52) is arranged above the lower shaft (30).

7. The compound feed sewing machine according to claim 1, characterized in that: The composite feed sewing machine (100) further includes a control device, the control device being electrically connected to the rotary drive member (50) and configured to send a first control signal, a second control signal, and a third control signal to the rotary drive member (50); When the rotary drive member (50) receives the first control signal, the rotary drive member (50) drives the column shuttle (20) to switch between a starting position and a target position; When the rotary drive member (50) receives the second control signal, the rotary drive member (50) drives the column shuttle platform (20) to switch between the starting position and the first working position, in which the feed dog on the column shuttle platform is in a state where the front is low and the back is high; When the rotary drive member (50) receives the third control signal, the rotary drive member (50) drives the column shuttle platform (20) to switch between the starting position and the second working position. In the second working position, the feed dog on the column shuttle platform is in a state where the front is high and the back is low.

8. A control method, characterized in that: The control method includes the following steps: Providing a composite feed sewing machine (100) according to any one of claims 1 to 7; Controlling the rotary drive member (50) to drive the column shuttle (20) to swing to a target position and deforming the transmission assembly (40); The rotary drive member (50) is controlled to drive the column shuttle platform (20) to reset to the initial position and reset the transmission assembly (40).

9. The control method according to claim 8, characterized in that: The control method further comprises the following steps: The presser foot assembly (60) and the needle (70) are controlled to rise and separate from the column shuttle platform.

10. The control method according to claim 8, characterized in that: The control method further comprises the following steps: The rotary drive member (50) is controlled to drive the column shuttle platform (20) to swing to the first working position; or the rotary drive member (50) is controlled to drive the column shuttle platform (20) to swing to the second working position.

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