Cluster type multi-machine-head automatic sewing machine

Abstract

The cluster type multi-machine-head automatic sewing machine comprises a rack, machine head modules, a follow-up presser foot assembly and a cloth feeding wheel assembly, and the rack comprises a cloth feeding frame body and an operation frame body; the machine head module comprises a sewing table, a sewing machine head, a sliding assembly and a sewing machine head sliding seat, the sewing machine head is fixedly installed on the sewing table, the sewing table is installed in the sewing machine head sliding seat, and the sewing machine head sliding seat slides on the rack through the sliding assembly; a notch is formed in the sewing table, the follow-up presser foot assembly is arranged at the notch, and the follow-up presser foot assembly is oppositely arranged below a machine needle of the sewing machine head; the cloth feeding wheel is installed on the cloth feeding frame body, and the cloth feeding wheel, the follow-up presser foot assembly and the sewing machine heads move synchronously. The positions of the machine heads are adjusted through sliding fit, and meanwhile follow-up and intermittent feeding is achieved through the cooperation of the multi-machine-head cooperative sewing system, the machine head module, the follow-up presser foot assembly and the cloth feeding wheel assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of cloth processing, and in particular relates to a cluster-type multi-head automatic sewing machine. Background Art

[0002] Traditional chain stitch sewing machines rely on an alternating feeding structure of a feed dog and a needle plate, which consists of a needle plate and a feed dog. The specific working process is that the feed dog penetrates the fabric, the lifting link lifts the fabric, the feed cam pushes it forward, and the feed dog descends and resets. However, the above structure does have the problem of "rigid contact causing wrinkles in thin materials and insufficient pushing force for thick materials." For example, the alternating feeding structure disclosed in the Chinese invention patent with patent number "CN117144574A" and the name "A composite process double-head sewing device and its processing method" has defects such as high fabric damage rate and rough stitch adjustment.

[0003] In addition, the Chinese invention patent with the patent number "CN211848402U" and the name "A dual-head automatic sewing device" discloses a dual-head automatic sewing device, including a frame body, a front end fixing frame and a running axis fixing frame are fixedly connected to the frame body, and a Y-axis extension bracket is also fixedly connected to one side of the frame body, and an X-axis running mechanism and a Y-axis running mechanism are respectively provided on the running axis fixing frame, and the X-axis running mechanism includes an X-axis running base, an X-axis running module is fixedly installed on the X-axis running base, and the two ends of the X-axis running module are respectively fixedly connected to the X-axis transmission group and the X-axis transmission base. However, the above-mentioned patented product cannot move because the dual heads are fixed on the sewing table; it cannot be expanded and extended, only supports dual-head operation, and has a closed structure;

[0004] In summary, traditional chain sewing machines have the following defects: 1. The traditional alternating feeding mechanism causes the fabric to be uneven, and when multiple heads work at the same time, the machine becomes out of sync, resulting in unsatisfactory sewing effects; 2. The ordinary multi-head collaborative sewing system cannot accurately control the synchronous operation of multiple heads; 3. The fixed frame cannot flexibly change the machine; 4. The ordinary motor drive is slow and the effect is unsatisfactory. Summary of the Invention

[0005] The object of the present invention is to provide a cluster-type multi-head automatic sewing machine to solve the above-mentioned technical problems.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: a cluster-type multi-head automatic sewing machine, comprising a frame, wherein the frame comprises a cloth feeding frame and at least one set of running frames;

[0007] A machine head module, the machine head module comprising a sewing table, a sewing head, a sliding assembly and a sewing head sliding seat, the sewing head being fixedly mounted on the sewing table, the sewing table being mounted in the sewing head sliding seat, and the sewing head sliding seat sliding on the frame via the sliding assembly;

[0008] A follower presser foot assembly, wherein a notch is provided on the sewing table, the follower presser foot assembly is arranged at the notch, and the follower presser foot assembly is arranged relatively below the needle of the sewing machine head;

[0009] A cloth feeding wheel assembly, wherein the cloth feeding wheel assembly is mounted on the cloth feeding frame, and the cloth feeding wheel assembly moves synchronously with the follower presser foot assembly and the sewing machine head;

[0010] There are at least two machine head modules, and at least two of the machine head modules are arranged facing each other on the running frame. An area for moving the sewing material to be processed is formed between the sewing tables in any two adjacent machine head modules.

[0011] Furthermore, the sliding assembly includes two sets of slide rails arranged in parallel on the running frame and a plurality of sliders installed below the sewing machine head sliding seat. The sewing machine head sliding seat slides on the running frame through the cooperation of the sliders and the slide rails.

[0012] Furthermore, the follower presser foot assembly includes a needle plate, a bending needle, a presser foot and a bending needle driving mechanism for driving the bending needle to move. The needle plate covers the slot of the sewing table, and the needle plate is correspondingly installed under the needle of the sewing machine head. The needle plate is provided with a needle hole for the needle to pass through. The presser foot is installed under the sewing machine head and is arranged corresponding to the needle and the needle plate.

[0013] Furthermore, the head module also includes a head servo drive motor, which drives the machine needle and the bending needle to move through a transmission assembly. The bending needle includes a transmission rod and several connecting blocks mounted on the transmission rod. Several of the connecting blocks are staggered, and a bending needle body is fixed on the top of the connecting block.

[0014] Furthermore, the cloth feed wheel assembly includes two groups of adjustment frames, an upper cloth feed roller and a lower cloth feed roller are rotatably provided between the two groups of adjustment frames, the upper cloth feed roller and the lower cloth feed roller are transmission connected, a gap is formed between the upper cloth feed roller and the lower cloth feed roller for the cloth to pass through, a cloth feed wheel transmission motor is installed on one side of the adjustment frame, and the output end of the cloth feed wheel transmission motor is connected to the lower cloth feed roller.

[0015] Furthermore, an upper transmission gear and a lower transmission gear are respectively provided at one end of the upper cloth feeding roller and the lower cloth feeding roller close to the cloth feeding wheel transmission motor, and the upper transmission gear and the lower transmission gear are meshed with each other.

[0016] Furthermore, an adjustment slot is provided on the adjustment frame, and a plurality of adjustment blocks are movably provided in the adjustment slot. An adjustment cylinder is installed on the top of the adjustment frame, and the driving end of the adjustment cylinder extends into the adjustment slot and is fixed on the adjustment block. Both ends of the upper feed roller and the lower feed roller are movably provided in the adjustment block.

[0017] Furthermore, the minimum gap distance formed between the two sets of head modules arranged opposite to each other is 13.5CM.

[0018] Furthermore, the frame is formed by splicing together a number of aluminum profiles, the frame and the slide rails fixed thereon can be extended arbitrarily, and a number of universal wheels and foot cups are provided below the frame.

[0019] Furthermore, it also includes a central control system, which is electrically connected to the head module, the follower presser foot assembly and the cloth feed wheel assembly, and is used to control the synchronous movement of the head module, the follower presser foot assembly and the cloth feed wheel assembly.

[0020] Through the above technical scheme, compared with the prior art, the present invention has the following beneficial effects: 1. By arranging a follower presser foot assembly and a cloth feed wheel assembly, and canceling the traditional alternating feeding mode of the feed dog, since the follower presser foot assembly and the cloth feed wheel assembly are synchronously controlled by the central control system, the follower presser foot assembly and the cloth feed wheel assembly cooperate with each other to realize follow-up and intermittent feeding, so that the follower presser foot assembly and the machine head module and the cloth feed wheel assembly that move synchronously with the follower presser foot assembly can work completely at the same time, which can meet the sewing work of more fabrics, and the effect of the formed fabric is smoother, which solves the technical problems of the traditional alternating feeding mechanism causing uneven fabrics, and the machine being out of sync when multiple machine heads work at the same time, resulting in unsatisfactory sewing effects.

[0021] 2. By setting a sewing machine head sliding seat, the sewing table and the sewing machine head are integrated on the sewing machine head sliding seat, and the sewing machine head sliding seat is movable on the upper surface of the frame through the cooperation of the slider and the slide rail. When in use, it can be manually adjusted according to different sewing distance requirements, and the minimum horizontal double head seam distance of 13.5CM can be achieved. The maximum seam distance structure can be adjusted according to customer needs.

[0022] 3. Each machine head module is equipped with an independent servo drive, which cooperates with the multi-machine head collaborative sewing system to achieve synchronous speed. When the multi-machine head cluster works, it can reach 3000r / min.

[0023] 4. Build a freely scalable modular architecture and flexibly combine machinery to improve the overall utilization rate of the equipment.

[0024] 5. Through the cooperation of multi-head collaborative sewing system and servo drive, the stitch length of all heads can be modified with one click. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 This is a structural diagram of the connection state of the frame and the head module of the present invention;

[0028] Figure 3 For the present invention Figure 1 A partially enlarged structural diagram of the follower presser foot assembly;

[0029] Figure 4 It is a structural schematic diagram of the cloth feeding wheel assembly of the present invention;

[0030] Figure 5 This is a schematic diagram of the main structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the top view of the structure of the present invention;

[0032] Figure 7 It is a side structural schematic diagram of the present invention;

[0033] The new label information is as follows:

[0034] 1. Frame; 2. Machine head module; 3. Follow-up presser foot assembly; 4. Feed wheel assembly; 5. Slide rail; 6. Slider; 7. Universal wheel; 8. Foot cup; 101. Feed frame; 102. Running frame; 201. Sewing table; 202. Sewing machine head; 203. Sewing machine head slide; 204. Needle; 205. Servo drive motor; 301. Needle plate; 302. Looper; 303. Presser foot; 304. Needle threading hole; 401. Adjustment frame; 402. Upper feed roller; 403. Lower feed roller; 404. Feed wheel drive motor; 405. Upper transmission gear; 406. Lower transmission gear; 407. Adjustment block; 408. Adjustment cylinder;

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following is a combination of the embodiments of the present invention Figure 1-7 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] like Figure 1-7 As shown: a cluster-type multi-head automatic sewing machine, including a frame 1, the frame 1 includes a cloth feeding frame 101 and at least one group of running frames 102; a head module 2, the head module 2 includes a sewing table 201, a sewing machine head 202, a sliding assembly and a sewing machine head sliding seat 203, the sewing machine head 202 is fixedly mounted on the sewing table 201, the sewing table 201 is installed in the sewing machine head sliding seat 203, and the sewing machine head sliding seat 203 slides on the frame 1 through the sliding assembly; a follower presser foot assembly 3, a notch is opened on the sewing table 201, the follower presser foot assembly 3 is arranged at the notch, and the follower presser foot assembly 3 is relatively arranged below the needle 204 of the sewing machine head 202; a cloth feed wheel assembly 4, the cloth feed wheel assembly 4 is installed on the cloth feed frame 101, and the cloth feed wheel assembly 4 and the follower presser foot assembly 3 and the sewing machine head 202 move synchronously;

[0040] There are at least two head modules 2 , which are arranged facing each other on the running frame 102 , and an area for moving the sewing material to be processed is formed between the sewing tables 201 in any two adjacent head modules 2 .

[0041] In this embodiment, the frame 1 includes two groups of parallel arranged running frames 102, and the two groups of running frames 102 are relatively fixed by aluminum profiles. A cloth feeding frame 101 is fixed on one side of one of the running frames 102, and two head modules 2 arranged opposite to each other are respectively provided on the two groups of running frames 102. The model of the head module 2 on each group of running frames 102 can be adjusted according to different products to adapt to different fabric widths and products. A cloth feeding wheel assembly 4 is installed on the cloth feeding frame 101, and the cloth feeding wheel assembly 4 is used to realize the conveyance of cloth to replace the existing traditional chain sewing machine that relies on the alternating feeding structure of the feed dog and the needle plate. Specifically, by setting a follower presser foot assembly 3 and a cloth feed wheel assembly 4, and canceling the traditional alternating feeding mode of the feed dog, since the follower presser foot assembly 3 and the cloth feed wheel assembly 4 are synchronously controlled by the central control system, the follower presser foot assembly 3 and the cloth feed wheel assembly 4 cooperate with each other to realize follow-up and intermittent feeding, so that the follower presser foot assembly 3 and the machine head module 2 and the cloth feed wheel assembly 4 that move synchronously with the follower presser foot assembly 3 can work at the same time, which can meet the sewing work of more fabrics, and the effect of the formed fabric is smoother, which solves the technical problems of the traditional alternating feeding mechanism causing uneven fabrics, and the machine being out of sync when multiple machine heads work at the same time, resulting in unsatisfactory sewing effects.

[0042] like Figure 1-2 As shown, the sliding assembly includes two sets of slide rails 5 arranged in parallel on the running frame 102 and a plurality of sliders 6 installed under the sewing machine head sliding seat 203. The sewing machine head sliding seat 203 slides on the running frame 102 through the cooperation of the sliders 6 and the slide rails 5. In this embodiment, two groups of slide rails 5 are fixed to the upper surface of the running frame 102 by means of threaded installation, and four groups of sliders 6 are provided on the lower bottom surface of the sewing machine head sliding seat 203. The four groups of sliders 6 are distributed in pairs on both sides of the bottom surface of the sewing machine head sliding seat 203. The sewing machine head sliding seat 203 is clamped on the slide rails 5 by the four groups of sliders 6 to realize the sliding cooperation between the sewing machine head sliding seat 203 and the running frame 102, so that the sewing machine head sliding seat 203 can move along the extension direction of the slide rails 5. Specifically, by setting the sewing machine head sliding seat 203, the sewing table 201 and the sewing machine head 202 are integrated on the sewing machine head sliding seat 203, and the sewing machine head sliding seat 203 is movable on the upper surface of the frame 1 through the cooperation of the sliders 6 and the slide rails 5. When in use, it is manually adjusted according to different sewing distance requirements.

[0043] In addition, another sliding assembly is provided in this embodiment to enable the sewing machine head sliding seat 203 to move on the frame 1. The sliding assembly replaces the track with a screw rod and adopts a mechanical adjustment mechanism of the screw rod and handle. The rotating handle drives the screw rod to rotate to achieve the movement of the sewing machine position. However, this movement mode has the following limitations: 1. Manual rotation is inefficient; 2. Long-distance movement is laborious.

[0044] This alternative solution takes low cost and mechanical reliability as its core values. Although the handover method is laborious and not as fast as the track-matched slider, it can also fully achieve the core purpose of 13.5CM seam spacing and wireless expansion of the horizontal dual heads.

[0045] like Figure 3 As shown in the figure: the follower presser foot assembly 3 includes a needle plate 301, a looper 302, a presser foot 303 and a looper drive mechanism for driving the looper 302 to move, the needle plate 301 covers the notch of the sewing table 201, the needle plate 301 is correspondingly installed below the needle 204 of the sewing machine head 202, and a needle hole 304 for the needle 204 to pass through is opened on the needle plate 301, the presser foot 303 is installed below the sewing machine head 202 and is corresponding to the needle 204 and the needle plate 301. In this example, the looper 302 and the needle 204 move synchronously and cooperate with each other to perform sewing operations. When the needle is in the highest position, it spits out thread, and when the needle is in the lowest position, it starts to hook thread. The presser foot 303 is clamped under the sewing machine head 202 and can move up and down through the drive of the sewing machine head 202. The presser foot 303 is provided with a through hole, which is corresponding to the needle hole 304 on the needle plate 301. The needle 204 can pass through the through hole and the needle hole 304 and extend to the looper 302. In addition, the sewing machine head sliding seat 203 is provided with a fixed position for placing the sewing table 201. The fixed position is hollow to facilitate the connection and movement of the looper 302 and the looper drive mechanism.

[0046] like Figure 1-2 As shown: the head module 2 also includes a head servo drive motor 205, which drives the machine needle 204 and the bending needle 302 to move through the transmission assembly. The bending needle 302 includes a transmission rod and a number of connecting blocks mounted on the transmission rod. The several connecting blocks are staggered, and the tops of the connecting blocks are fixed with a bending needle body. In this embodiment, a motor mounting plate is provided on one side of the sewing machine head 202, and the head servo drive motor 205 is fixed on the motor mounting plate. A transmission handwheel is provided on the sewing machine head 202, and the transmission handwheel is connected to the machine needle transmission rod. A gear is fixed on one side of the transmission handwheel, and the transmission handwheel can drive the machine needle 204 to move. In addition, the bending needle 302 is also connected to the bending needle drive mechanism and the servo drive motor 205 through a transmission. The driving end of the servo drive motor 205 is provided with a co-located gear, and the two gears are connected by a synchronous belt transmission, so that the servo drive motor 205 can drive the machine needle 204 and the bending needle 302 to operate synchronously.

[0047] The bending needle driving mechanism in this embodiment includes a transmission connecting rod and a transmission gear. The transmission gear is fixed on one side of the transmission connecting rod. The side of the transmission connecting rod away from the transmission gear is connected to the transmission rod of the bending needle 302, and the transmission gear on the transmission connecting rod is engaged with the gear set on the needle transmission rod. Therefore, a servo drive motor 205 can drive the two to interact with each other.

[0048] like Figure 4-7 As shown: the cloth feed wheel assembly 4 includes two groups of adjustment frames 401, and an upper cloth feed roller 402 and a lower cloth feed roller 403 are rotatably provided between the two groups of adjustment frames 401. The upper cloth feed roller 402 and the lower cloth feed roller 403 are transmission-connected, and a gap for the cloth to pass through is formed between the upper cloth feed roller 402 and the lower cloth feed roller 403. A cloth feed wheel transmission motor 404 is installed on one side of the adjustment frame 401, and the output end of the cloth feed wheel transmission motor 404 is connected to the lower cloth feed roller 403. In this embodiment, when the cloth feed wheel transmission motor 404 is running to perform cloth feeding operation, since a synchronization instruction is preset in the central control system, when the cloth feed wheel transmission motor 404 is started, the head module 2 will also be started accordingly, thereby controlling the operation of the curved needle 302 and the needle 204 to realize cloth feeding and sewing.

[0049] like Figure 4-7 As shown: the upper cloth feed roller 402 and the lower cloth feed roller 403 are respectively provided with an upper transmission gear 405 and a lower transmission gear 406 at one end close to the cloth feed wheel transmission motor 404, and the upper transmission gear 405 and the lower transmission gear 406 are meshed with each other. In this embodiment, the upper cloth feed roller 402 and the lower cloth feed roller 403 are arranged up and down. When the cloth feed wheel transmission motor 404 is started, the lower transmission gear 406 is driven to rotate, and then the upper cloth feed roller 402 is synchronized with the operation through gear transmission. When feeding, the cloth can be transported by the cooperation of the upper cloth feed roller 402 and the lower cloth feed roller 403.

[0050] like Figure 4 As shown: an adjustment slot is provided on the adjustment frame 401, and a number of adjustment blocks 407 are movably provided in the adjustment slot. An adjustment cylinder 408 is installed on the top of the adjustment frame 401, and the driving end of the adjustment cylinder 408 extends into the adjustment slot and is fixed on the adjustment block 407. Both ends of the upper feed roller 402 and the lower feed roller 403 are movably provided in the adjustment block 407. In this embodiment, by providing two groups of adjustment blocks 407 in the adjustment frame 401, the adjustment block 407 located above is connected to the driving end of the adjustment cylinder 408, and the size of the gap between the upper feed roller 402 and the lower feed roller 403 is controlled by adjusting the cylinder 408, so as to adapt to fabrics of different sizes.

[0051] The minimum gap distance formed between two sets of head modules 2 arranged facing each other is 13.5CM.

[0052] like Figure 1-2 As shown: the frame 1 is made of several aluminum profiles, the frame 1 and the slide rail 5 fixed thereon can be extended arbitrarily, and several universal wheels 7 and foot cups 8 are provided under the frame 1. In this embodiment, a horizontal double straight rail is used on a specially made integrally carved aluminum sewing machine head sliding seat 203 (four groups of sliders 6 are fixed under the sewing machine head sliding seat 203) to achieve a minimum horizontal double head seam distance of 13.5CM.

[0053] Modular splicing: The aluminum profile chassis / track can be extended (theoretically unlimited), supporting 2-N machine heads to extend freely horizontally or vertically.

[0054] Machine head movement: The distance between the sewing machines can be freely adjusted according to different sewing needs, realizing multiple uses of one machine.

[0055] The lockable universal wheels and supporting feet allow for quick movement and prevent vibration during operation.

[0056] like Figure 1-2 As shown: It also includes a central control system, which is a multi-head cooperative sewing system. In this embodiment, the central control system is preset with a synchronous operation instruction program. According to the instruction, the head module 2, the follower presser foot assembly 3 and the feed wheel assembly 4 are controlled to operate synchronously. The central control system is electrically connected to the head module 2, the follower presser foot assembly 3 and the feed wheel assembly 4. The central control system is used to control the synchronous movement of the head module 2, the follower presser foot assembly 3 and the feed wheel assembly 4. Specifically, the present invention pioneered a three-component synchronous follow-up feeding technology. The specific process is as follows: during the sewing stage, the needle 204 descends, the presser foot 303 presses down, and the feed wheel is stationary; during the feeding stage, the needle 204 rises, the presser foot 303 is lifted, and the feed wheel servo pushes. The system converts the stitch length instruction into 0.3-12.7mm in real time.

[0057] Through the above-mentioned multi-head collaborative sewing system, the synchronous start and stop of multiple heads can be controlled by one button. It is divided into a main switch and an independent switch. In short: the machines can work independently or in a cluster.

[0058] In summary, the present invention has the following beneficial effects:

[0059] Independent / cluster dual mode: in the case of multiple heads, a single machine can work independently, or multiple machines can work simultaneously in a cluster; follow-up feeding: the cloth feed wheel and sewing machine are fully synchronized and work during the needle lifting period; follow-up structure and intermittent feeding (eliminating the traditional alternating feeding method of the feed dog) are suitable for a wide range of fabrics: thin materials, medium and thick materials; one person can look after 3-5 devices (the machine is equipped with sensors, and it will automatically stop working if there is a problem with the fabric or sewing thread); extension: the winding machine, cutting machine, and other equipment can be linked and combined to achieve synchronous work, building a new set of automated equipment; servo drive, the machine speed reaches 3000r / min.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cluster-type multi-head automatic sewing machine, characterized by: The machine comprises a frame (1), wherein the frame (1) comprises a cloth feeding frame (101) and at least one set of running frames (102); A machine head module (2), the machine head module (2) comprising a sewing table (201), a sewing head (202), a sliding assembly, and a sewing head sliding seat (203), the sewing head (202) being fixedly mounted on the sewing table (201), the sewing table (201) being mounted in the sewing head sliding seat (203), and the sewing head sliding seat (203) sliding on the machine frame (1) via the sliding assembly; A follower presser foot assembly (3), wherein a notch is provided on the sewing table (201), the follower presser foot assembly (3) is arranged at the notch, and the follower presser foot assembly (3) is relatively arranged below the needle (204) of the sewing machine head (202); A cloth feeding wheel assembly (4), wherein the cloth feeding wheel assembly (4) is mounted on the cloth feeding frame (101), and the cloth feeding wheel assembly (4) moves synchronously with the follower presser foot assembly (3) and the sewing machine head (202); There are at least two machine head modules (2), and at least two of the machine head modules (2) are arranged facing each other on the operating frame (102), and an area for moving the sewing material to be processed is formed between the sewing tables (201) in any two adjacent machine head modules (2).

2. The cluster-type multi-head automatic sewing machine according to claim 1, characterized in that: The sliding assembly comprises two sets of slide rails (5) arranged in parallel on the operating frame (102) and a plurality of sliders (6) installed below the sewing machine head sliding seat (203); the sewing machine head sliding seat (203) slides on the operating frame (102) through the cooperation of the sliders (6) and the slide rails (5).

3. The cluster-type multi-head automatic sewing machine according to claim 2, characterized in that: The follower presser foot assembly (3) comprises a needle plate (301), a curved needle (302), a presser foot (303) and a curved needle driving mechanism for driving the curved needle (302) to move, wherein the needle plate (301) covers the notch of the sewing table (201), the needle plate (301) is correspondingly mounted below the needle (204) of the sewing machine head (202), the needle plate (301) is provided with a needle hole (304) for the needle (204) to pass through, and the presser foot (303) is mounted below the sewing machine head (202) and is arranged corresponding to the needle (204) and the needle plate (301).

4. The cluster-type multi-head automatic sewing machine according to claim 3, characterized in that: The machine head module (2) also includes a machine head servo drive motor (205), which drives the machine needle (204) and the bending needle (302) to move through a transmission component. The bending needle (302) includes a transmission rod and several connecting blocks mounted on the transmission rod. Several of the connecting blocks are arranged in an interlaced manner, and the top of each connecting block is fixed with a bending needle body.

5. The cluster-type multi-head automatic sewing machine according to claim 1, characterized in that: The cloth feeding wheel assembly (4) comprises two groups of adjustment frames (401), an upper cloth feeding roller (402) and a lower cloth feeding roller (403) are rotatably arranged between the two groups of adjustment frames (401), the upper cloth feeding roller (402) and the lower cloth feeding roller (403) are transmission-connected, a gap for cloth to pass through is formed between the upper cloth feeding roller (402) and the lower cloth feeding roller (403), a cloth feeding wheel transmission motor (404) is installed on one side of the adjustment frame (401), and an output end of the cloth feeding wheel transmission motor (404) is connected to the lower cloth feeding roller (403).

6. The cluster-type multi-head automatic sewing machine according to claim 5, characterized in that: An upper transmission gear (405) and a lower transmission gear (406) are respectively provided at one end of the upper cloth feeding roller (402) and the lower cloth feeding roller (403) close to the cloth feeding wheel transmission motor (404), and the upper transmission gear (405) and the lower transmission gear (406) are meshed with each other.

7. The cluster-type multi-head automatic sewing machine according to claim 6, characterized in that: The adjustment frame (401) is provided with an adjustment slot, and a plurality of adjustment blocks (407) are movably provided in the adjustment slot. An adjustment cylinder (408) is installed on the top of the adjustment frame (401), and a driving end of the adjustment cylinder (408) extends into the adjustment slot and is fixed on the adjustment block (407). Both ends of the upper cloth feeding roller (402) and the lower cloth feeding roller (403) are movably provided in the adjustment block (407).

8. The cluster-type multi-head automatic sewing machine according to claim 1, characterized in that: The minimum gap distance formed between the two sets of head modules (2) arranged facing each other is 13.5CM.

9. The cluster-type multi-head automatic sewing machine according to any one of claims 1 to 8, characterized in that: The frame (1) is formed by splicing together a plurality of aluminum profiles. The frame (1) and the slide rail (5) fixed thereon can be extended arbitrarily. A plurality of universal wheels (7) and foot cups (8) are provided below the frame (1).

10. The cluster-type multi-head automatic sewing machine according to claim 9, characterized in that: The machine head module (2), the follower presser foot assembly (3) and the cloth feed wheel assembly (4) are electrically connected to the machine head module (2), the follower presser foot assembly (3) and the cloth feed wheel assembly (4), and the central control system is used to control the synchronous movement of the machine head module (2), the follower presser foot assembly (3) and the cloth feed wheel assembly (4).

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