A sewing apparatus and a method of constructing a sewing apparatus

Abstract

This invention relates to a sewing device and a method for constructing a sewing device, comprising a sewing machine assembly, which includes a sewing machine head and a first control module. The sewing machine head includes a housing, a needle bar, a presser foot bar, a main shaft, and a motor. The motor is equipped with an encoder, and the motor and encoder are electrically connected to the first control module. The motor is driven by the needle bar through the main shaft. The first control module is equipped with a foot pedal input port and a first control system. It also includes a middle presser foot assembly and a sewing table. The middle presser foot assembly includes a housing, a first power source, a connector, and a second control module. The housing is connected to the machine housing, the first power source is driven by the connector, and the connector is connected to the presser foot bar. The second control module is electrically connected to the encoder and also electrically connected to the foot pedal input port. The second control module is equipped with a second control system, and the first power source is electrically connected to the second control module. This invention can be detachably combined to form a sewing device with a dual system.

Description

Technical Field

[0001] This invention relates to the field of sewing equipment technology, and more specifically to a sewing device and a method for constructing the sewing device. Background Technology

[0002] Because sewing equipment can automatically and quickly sew various materials and patterns under the precise control of its computer system, it is widely used in the production of various quilts, bedspreads, sleeping bags, mattresses, textile decorations, etc. Existing sewing equipment comes in a variety of structures, models, and functions to meet the sewing needs of different occasions.

[0003] A sewing machine is a common type of sewing equipment. Sewing machines (such as flatbed sewing machines and computerized sewing machines) typically include a sewing head, sewing table, control module, and foot pedal module. The sewing head is the main part of a computerized sewing machine, usually comprising four mechanisms: the needle insertion mechanism, the thread hooking mechanism, the thread take-up mechanism, and the feed mechanism, as well as auxiliary mechanisms such as the thread winding mechanism, the presser foot mechanism, and the feed dog mechanism. The movements of these mechanisms coordinate effectively and work in a cyclical manner to sew the fabric together. The sewing head typically includes a housing, front cover, needle bar, presser foot, main shaft, and motor. The motor is equipped with an encoder and is electrically connected to the control module. Simultaneously, the motor is drive-driven to the main shaft to rotate it. The main shaft is also drive-driven to the needle bar, enabling it to perform the needle insertion action. A machine needle is also installed at the end of the needle bar. The encoder is electrically connected to the control module, allowing the control module to obtain the motor's operating status. The foot pedal module is electrically connected to the controller via a foot pedal input port, allowing control of the sewing process, such as controlling the sewing speed, through the foot pedal. The presser foot lever is height-adjustable and constrained by the machine housing, and a presser foot is installed at the lower end of the presser foot lever. During sewing, the presser foot can be used to press the fabric firmly. After sewing, the presser foot can be lifted to remove the fabric. In conventional sewing machines, the presser foot cannot move with the needle bar. In existing sewing machines, the end of the machine housing has a mounting opening, and a front cover is installed at the end of the machine housing to close the mounting opening, such as... Figures 1-3 As shown.

[0004] Template sewing machines (or template sewing machines) are also a common type of sewing equipment. The difference between template sewing machines and traditional sewing machines is that template sewing machines can automatically sew according to preset sewing lines. They are mainly used for sewing various shaped garments, shoes, hats, bags, etc. Existing template sewing machines typically include a sewing head, a sewing table, and an XY module for driving the presser foot. The sewing head usually includes a cantilever, a needle bar mounted on the cantilever, a needle bar drive mechanism for driving the needle bar to perform the piercing action, a presser foot bar, a presser foot bar drive mechanism for driving the presser foot bar up and down, and a control module. The lower end of the needle bar has a machine needle, and the lower end of the presser foot bar has a middle presser foot. The control module is electrically connected to the needle bar drive mechanism, the presser foot bar drive mechanism, and the XY module to control the coordinated action of the needle bar, the middle presser foot, and the XY module, allowing the middle presser foot to work in conjunction with the needle bar during sewing. Pattern sewing machines (or pattern stitch sewing machines) have a similar composition to template sewing machines, but differ in function and application; they are also a common type of sewing equipment.

[0005] In existing technology, sewing machines and pattern making machines (or design machines) are sewing equipment with different functions and uses. Typically, each machine must be purchased and installed separately to achieve its corresponding function. This is not only cumbersome and costly, but also limited by the single-function nature of each machine, failing to meet changing user needs and exhibiting poor practicality and flexibility. For example, existing sewing factories usually have multiple workstations, each with space reserved for installing one machine. If a workstation previously had a sewing machine, purchasing a pattern making machine or design machine requires moving the existing sewing machine to the workstation before installation. Similarly, if a workstation previously had a pattern making machine or design machine, purchasing a sewing machine requires moving the existing machine to the workstation before installation. This is not only cumbersome and time-consuming, but also requires storage space for the disassembled equipment (sewing machine, pattern making machine, or design machine), further occupying limited factory space and leading to high costs. For example, existing factories often change orders, goods, or sewing processes according to customer needs. Sometimes sewing machines are needed, and sometimes pattern-making machines or design machines are required. If both sewing machines and pattern-making machines (or design machines) are installed in the factory, not only will the number of each type of equipment be halved, affecting the factory's output, but the cost will also be higher. If only one type of equipment is installed in the factory, it cannot meet the needs of those requiring a different type of equipment for sewing. Therefore, a new technological approach is needed to solve the above problems. Summary of the Invention

[0006] The first aspect of this invention addresses the problem faced by customers of existing sewing equipment who require a different sewing function, and how to increase production capacity and meet different sewing needs within limited space. It provides a combined sewing equipment with a dual system, capable of performing two different sewing operations and allowing for combined use to meet various requirements. The main concept is as follows:

[0007] A sewing device includes a sewing machine assembly. The sewing machine assembly includes a sewing machine head and a first control module. The sewing machine head includes a machine housing, a needle bar, a presser foot bar, a main shaft, and a motor. The motor is equipped with an encoder. The motor and the encoder are electrically connected to the first control module. The motor is drive-connected to the main shaft, and the main shaft is drive-connected to the needle bar. The first control module is equipped with a foot pedal input port and a first control system. The first control system is a sewing machine control system.

[0008] It also includes a presser foot device and a sewing table. The sewing head is mounted on the sewing table. The presser foot device includes a housing, a first power source, a connector, and a second control module. The housing has a first connecting part adapted to the sewing head, and the housing is detachably connected to the machine housing through the first connecting part.

[0009] The first power source is mounted on the housing and is connected to the connector head for transmission. The connector head is detachably connected to the pressure foot rod.

[0010] The second control module is electrically connected to the encoder and is used to acquire the operating status of the main shaft inside the sewing machine head. The second control module is also electrically connected to the foot pedal input port and is used to send control signals to the sewing machine head.

[0011] The second control module is equipped with a second control system. The first power source is electrically connected to the second control module and is used to drive the presser foot lever to lift or lower. In this solution, by configuring a sewing machine device and including a sewing machine head within it, this sewing equipment functions as a sewing machine. A sewing table serves as both a sewing platform and a support for the sewing machine head. A middle presser foot device with a housing provides a mounting base. A first connecting part allows the device to be installed on the head of an existing sewing machine. A first power source and a connecting head are configured, with the first power source and connecting head connected to the presser foot lever of the machine head, allowing the first power source to drive the presser foot lever to lift and lower. A second control system is configured, with the first power source and second control module electrically connected. The second control module is also electrically connected to an encoder to obtain the operating status of the main shaft within the machine head, enabling the second control module to control the lifting and lowering of the presser foot lever. The action of the presser foot lever in conjunction with the needle bar allows it to function as a presser foot, thus enabling the sewing machine head equipped with a central presser foot device to function as a central presser foot, which facilitates the realization of the template machine function. By electrically connecting the second control module to the foot pedal input port of the sewing machine, control signals can be sent to the sewing machine head through the foot pedal input port, allowing the second control module to control the sewing machine head to perform sewing actions. Since the second control module contains a second control system and can control the sewing machine head to perform sewing actions, it can also control the action of the presser foot lever in conjunction with the needle bar, allowing the entire sewing equipment to perform sewing operations according to the second control system. When operating the sewing machine independently, the entire sewing equipment can perform sewing operations according to the sewing machine control system, thus enabling this sewing equipment to perform two different sewing operations. Compared to existing single-function sewing equipment, this sewing equipment utilizes a detachable design to create a dual-system sewing machine. Firstly, for users who already have sewing machines installed, this invention allows for the convenient conversion of existing single-function sewing machines into multi-functional machines with dual systems capable of performing two types of sewing operations. This is not only highly convenient but also significantly reduces costs. Secondly, this sewing equipment can achieve two sewing operation modes while maintaining or even reducing the size of the machine. This not only allows for the installation of more equipment in limited spaces, increasing sewing output, but also enables users to perform different sewing operations according to their actual needs, meeting diverse sewing requirements, enhancing versatility, and significantly reducing costs.

[0012] Preferably, the second control system is a template machine control system or a pattern machine control system. When the second control system is a template machine control system, this sewing equipment can be used as both a template machine and a sewing machine. When the second control system is a pattern machine control system, this sewing equipment can be used as both a pattern machine and a sewing machine.

[0013] For ease of use and operation, the sewing machine device further includes a first control panel, which is located on the machine head and electrically connected to the first control module. This allows for the setting or adjustment of relevant parameters via the first control panel.

[0014] For ease of use and operation, the pressure foot device further includes a second control panel, which is disposed in the housing and electrically connected to the second control module. This allows for the setting or adjustment of relevant parameters via the second control panel.

[0015] Furthermore, the sewing machine device also includes a foot pedal module, which is electrically connected to the first control module via the foot pedal input port. By configuring the foot pedal module, when this sewing device is used as a sewing machine, the user can conveniently control the sewing speed, start and stop sewing, and control the stitches and thread types via the foot pedal module.

[0016] To facilitate wiring operations, a first adapter is further included, through which the encoder is connected to the first control module and the second control module respectively.

[0017] To facilitate wiring operations, a second adapter is further included, through which the foot pedal module is connected to the foot pedal input port and the second control module respectively.

[0018] A second aspect of this invention addresses the problem of improving the sewing accuracy of the second control system. Further, the presser foot device includes a blocking switch connected in series between the foot pedal module and the second adapter to control the connection and disconnection between them. By configuring the blocking switch, when sewing operations are required using the first control system, the switch can be disconnected, allowing the second control module to connect only to the foot pedal input port. In this state, the foot pedal module is disabled; even if an operator accidentally touches it, no signal will be transmitted to the foot pedal input port, effectively blocking the signal and preventing the foot pedal module from affecting the normal operation of the second control system, thus improving the sewing accuracy of the second control system. When the blocking switch is closed, the foot pedal input port is simultaneously connected to both the first and second control modules, allowing signals to be transmitted to both modules synchronously.

[0019] To make it easier to use, the second control module is further electrically connected to the blocking switch, and the second control module is used to control the opening and closing of the blocking switch.

[0020] To facilitate assembly and combination according to actual needs, the system further includes a main switch and a power plug. The sewing machine assembly also includes a first power module for power supply, and the presser foot assembly includes a second power module for power supply. The power plug is connected to the main switch via a wire, and the main switch is connected to both the first and second power modules. By configuring the first and second power modules, power can be supplied to the sewing machine assembly and the presser foot assembly respectively. During on-site assembly, it is only necessary to connect the second power module of the presser foot assembly to the main switch, which is very convenient and simple, making it easier for users to assemble and combine the components according to their actual needs.

[0021] A third aspect of this invention addresses the problem of an auxiliary presser foot function in a sewing machine device. Further, the presser foot device includes an auxiliary presser foot module, which comprises a second power source, an auxiliary presser rod, and an auxiliary presser foot. The second power source is mounted on the housing. The auxiliary presser rod is movably and vertically constrained by the housing, with its lower end extending outside the housing. The auxiliary presser foot is mounted on the lower end of the auxiliary presser rod.

[0022] The second power source is connected to the auxiliary presser foot via a transmission. The second control module controls the second power source, which drives the auxiliary presser foot to lift or lower. This gives the sewing equipment an auxiliary presser foot function, enabling it to function as a pattern sewing machine or a design sewing machine, thus facilitating better sewing results.

[0023] Preferably, the first power source is an electric motor.

[0024] Preferably, the second power source is a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0025] Furthermore, it also includes an XY module, which comprises an X-axis motion module mounted on the sewing table, a Y-axis motion module connected to the X-axis motion module, and a support connected to the Y-axis motion module. The support is equipped with several clamping heads for holding the presser foot. The X-axis motion module and the Y-axis motion module are electrically connected to the second control module. By configuring the XY module, the second control module can control the coordinated operation of the XY module, the needle bar, and the presser foot.

[0026] Furthermore, the sewing table includes a frame and a tabletop mounted on the frame, with the housing connected to the frame. The frame provides support, and the tabletop can be used as a workbench during sewing.

[0027] The fourth aspect of this invention addresses the problem of quickly connecting presser foot bars and improving assembly efficiency. Further, it includes a fastener. The connector has a clamping portion adapted to the presser foot bar and a locking hole adapted to the fastener. The clamping portion includes two clamping arms with a clamping opening between them for clamping the presser foot bar. The clamping portion is used to clamp the presser foot bar radially. The fastener is used to tighten the two clamping arms in the clamping portion. During assembly, the connector can radially engage the presser foot bar from its side and clamp it using the clamping arms. Then, the fastener and the locking hole lock the two clamping arms together, achieving lateral assembly. The entire assembly process does not require disassembling the presser foot bar or altering the existing sewing machine structure, and the assembly work can be completed simply and efficiently, significantly improving assembly efficiency.

[0028] Preferably, one side of the housing has a first opening, and the first connecting portion includes at least two first mounting holes. The first connecting portion is arranged along the circumferential direction of the first opening and corresponds to the mounting holes on the housing. This allows the housing to be laterally butt-fitted to the end of an existing sewing machine housing via the first connecting portion, and the interior of the housing can communicate with the interior of the sewing machine housing through the first opening. This allows the housing to replace the existing front cover and be installed in the position of the front cover.

[0029] Preferably, the first power source is connected to the connector via a first transmission mechanism. The first transmission mechanism includes a crank and a connecting rod. One end of the crank is connected to the first power source, which drives the crank to rotate. The two ends of the connecting rod are rotatably connected to the crank and the connector, respectively. This allows the first power source to drive the crank to rotate, and the rotation of the crank to drive the connector to move vertically up and down, thereby moving the presser foot lever up and down and achieving the purpose of lifting the middle presser foot.

[0030] The fifth aspect of this invention addresses the problem of rapidly and cost-effectively forming a dual-system sewing device using existing sewing machines, and provides a method for constructing such a sewing device, comprising the following steps:

[0031] Prepare a set of the aforementioned presser foot device, and prepare a set of XY modules and a sewing machine, the sewing machine including a sewing head, a first control module and a sewing table;

[0032] Remove the front cover at the end of the sewing machine head, connect the connector in the middle presser foot device to the presser foot bar, and use fasteners to fix the housing in the middle presser foot device to the end of the machine housing;

[0033] The second control module in the middle presser foot device is electrically connected to the motor encoder of the main shaft in the sewing machine using a wire, so that the second control module can obtain the running status of the main shaft in the machine head through the encoder;

[0034] The second control module in the middle pressure foot device is electrically connected to the foot pedal input port in the sewing machine using a wire, so that the second control module sends control signals to the sewing machine head through the foot pedal input port;

[0035] The XY module is installed on the sewing table and electrically connected to the second control module in the presser foot device. The second control module controls the movement of the XY module. Using this method, existing sewing machines can be conveniently, efficiently, and cost-effectively converted into sewing equipment with a dual system. For users who already have sewing machines installed, there is no need to disassemble and move them, allowing for full utilization of existing machines and effectively reducing costs.

[0036] The sixth aspect of this invention addresses the problem of rapidly and cost-effectively constructing a dual-system sewing device by providing a method for constructing such a sewing device, comprising the following steps:

[0037] Prepare a set of the aforementioned presser foot device, and prepare a set of XY modules, a sewing table, and a set of sewing machine devices, wherein the sewing machine device includes a sewing machine head and a first control module adapted to the sewing machine head;

[0038] The XY module and the sewing head are respectively installed on the sewing table, and the first control module is installed on the sewing head or the sewing table;

[0039] Remove the front cover at the end of the sewing machine head, connect the connector in the middle presser foot device to the presser foot bar, and use fasteners to fix the housing in the middle presser foot device to the end of the machine housing;

[0040] The second control module in the middle presser foot device is electrically connected to the motor encoder of the main shaft in the sewing machine using a wire, so that the second control module can obtain the running status of the main shaft in the machine head through the encoder;

[0041] The second control module in the middle pressure foot device is electrically connected to the foot pedal input port in the sewing machine using a wire, so that the second control module sends control signals to the sewing machine head through the foot pedal input port;

[0042] The XY module is electrically connected to the second control module in the middle presser foot device, and the second control module controls the movement of the XY module. Using this method, a completely new sewing equipment with a dual system can be quickly and cost-effectively built. It can be used not only as a sewing machine, but also as a pattern sewing machine or design sewing machine. This allows for two sewing operation modes within the same sewing equipment while maintaining or even reducing the size of the machine. This not only allows for the installation of more equipment in limited space, increasing sewing capacity, but also enables users to perform different sewing operations according to actual needs, meeting diverse sewing requirements. It offers greater versatility and significantly reduces costs.

[0043] Compared with existing technologies, the sewing equipment and method for constructing the sewing equipment provided by this invention, which can be detachably combined into a dual-system sewing equipment, offers several advantages. First, for users who already have sewing machines installed, the invention allows for the convenient conversion of existing single-function sewing machines into dual-system machines by incorporating a presser foot device. This is not only convenient but also significantly reduces costs. Second, this sewing equipment can achieve two sewing operation modes while maintaining or even reducing the size of the machine. This not only allows for the installation of more equipment in limited spaces, increasing sewing capacity, but also enables users to perform different sewing operations according to their actual needs, meeting diverse sewing requirements, enhancing versatility, and significantly reducing costs. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a front view of the head of an existing sewing machine.

[0046] Figure 2 This is a left view of the head of an existing sewing machine.

[0047] Figure 3 This is a front view of an existing sewing machine after the front cover has been removed.

[0048] Figure 4 This is a top view of a sewing device provided in Embodiment 1 of the present invention.

[0049] Figure 5 For vision Figure 4 A partial front view.

[0050] Figure 6 This is a schematic diagram of a system connection in a sewing device provided in Embodiment 1 of the present invention.

[0051] Figure 7 This is a schematic diagram of a power supply in a sewing device provided in Embodiment 1 of the present invention.

[0052] Figure 8 This is one of the structural schematic diagrams of the first type of pressure foot device provided in Embodiment 1 of the present invention.

[0053] Figure 9 This is a second schematic diagram of the structure of the first type of pressure foot device provided in Embodiment 1 of the present invention.

[0054] Figure 10 This is one of the structural schematic diagrams of the second type of pressure foot device provided in Embodiment 1 of the present invention.

[0055] Figure 11 This is a second schematic diagram of the structure of the second type of pressure foot device provided in Embodiment 1 of the present invention.

[0056] Figure 12 for Figure 11 The diagram shows the structure of the middle pressure foot device after the front cover is installed.

[0057] Figure 13 for Figure 12 The diagram shows the structure of the middle pressure foot device after it is connected to the pressure foot rod.

[0058] Figure 14 This is a schematic diagram of a pressure foot device provided in Embodiment 1 of the present invention, in which a connector is laterally connected to the pressure foot rod along the radial direction of the pressure foot rod. The arrows with dashed lines in the diagram represent the direction of movement of the connector.

[0059] Figure 15 This is a schematic diagram of a system connection in a sewing device provided in Embodiment 2 of the present invention.

[0060] Explanation of markings in the diagram

[0061] Medium pressure foot device 1, medium pressure foot 11, second control module 12

[0062] 2. Housing 2, First opening 21, First mounting hole 22, Second opening 23, Second mounting hole 24, Vertical guide 25

[0063] First power unit 3, crank 31, connecting rod 32, connector 33, clamping arm 34, clamping port 35, locking hole 36

[0064] Fastener 4

[0065] Second power source 5, auxiliary pressure rod 51, auxiliary pressure foot 52, guide block 53

[0066] The sewing machine includes: 6. Sewing head; 60. Motor; 61. Housing; 62. Assembly port; 63. Assembly hole; 64. Needle bar; 65. Presser foot bar; 66. Front cover; 67. Presser foot; 68. Foot pedal module; 69. Foot pedal input port.

[0067] First control module 71, encoder 72, first adapter 73, second adapter 74, blocking switch 75, first power module 76, second power module 77, main switch 78, power plug 79

[0068] XY module 8, bracket 81

[0069] Sewing table 9. Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0071] This embodiment provides a sewing device, including a sewing machine assembly, a presser foot assembly 1, and a sewing table 9, wherein...

[0072] The sewing machine device includes a sewing machine head 6 (as in a conventional sewing machine) and a first control module 71. In implementation, the sewing machine head 6 can preferably be a computerized sewing machine head 6 (or a flatbed sewing machine head 6). The sewing machine head 6 is the main part of the computerized sewing machine, typically including four mechanisms: a needle insertion mechanism, a thread hooking mechanism, a thread take-up mechanism, and a feed mechanism, as well as auxiliary mechanisms such as a thread winding mechanism, a pressing mechanism, and a feed dog mechanism. The movements of each mechanism are rationally coordinated and work in a cyclical manner to sew the fabric together. In implementation, the first control module 71 is a control module from an existing sewing machine. For ease of subsequent explanation, in this embodiment, the sewing machine head 6 includes a housing 61, a needle bar 64, a presser foot bar 65, a main shaft, and a motor 60. The motor 60 is equipped with an encoder 72. Figure 1 and Figure 6 As shown, motor 60 is electrically connected to the first control module 71. Simultaneously, motor 60 is also connected to the main shaft drive to rotate the main shaft. The main shaft is connected to the needle bar 64 to drive the needle bar 64 for piercing. During implementation, a machine needle is also installed at the end of the needle bar 64. In this embodiment, encoder 72 is also electrically connected to the first control module 71, allowing the first control module 71 to obtain the operating status of motor 60 through encoder 72. Since motor 60 is connected to the main shaft drive, the operating status of the main shaft within the sewing head 6 can be obtained for precise sewing control.

[0073] Existing sewing machines also include a foot pedal module 68 (or foot pedal module 68), and the first control module 71 is equipped with a foot pedal input port 69. The foot pedal module 68 is electrically connected to the first control module 71 through the foot pedal input port 69, such as... Figure 6As shown. In existing sewing machines, the foot pedal module 68 typically includes a foot pedal, which allows the user to control and adjust the operation of the sewing machine. The first control module 71 receives signals from the foot pedal module 68 and controls the sewing machine accordingly, such as controlling the sewing speed and direction. Specifically, the main functions of the foot pedal module 68 include: First, controlling the sewing speed: When the operator presses the foot pedal, a signal is sent to the first control module 71. After receiving the signal, the first control module 71 processes the signal according to a preset program and algorithm and sends corresponding instructions to the motor 60, thereby controlling the speed and movement state of the motor 60, allowing the operator to change the sewing (head 6) speed as needed. Second, controlling the start and stop of sewing: The foot pedal module 68 typically also includes a start and stop switch, allowing the operator to start or stop the operation of the sewing machine (head 6) by pressing or releasing the foot pedal. Third, controlling stitches and thread patterns: Some sewing machine foot pedal modules 68 also allow the operator to control the stitch density and thread pattern by adjusting the pressure and speed of the pedal. Fourth, controlling other functions: Depending on the design and function of existing sewing machines, the foot pedal module 68 may also include control switches for other functions, such as controlling needle replacement and thread winding. It is evident that the foot pedal module 68 and the first control module 71 are closely related; they cooperate to jointly realize the operation and control of the sewing machine head 6. Therefore, in this embodiment, the first control module 71 is equipped with a foot pedal input port 69 and a first control system, such as... Figure 6 As shown, the sewing machine device can also be equipped with a foot pedal module 68 from an existing sewing machine. The foot pedal module 68 is connected to a foot pedal input port 69 via a wire, allowing for electrical connection to the first control module 71 through the foot pedal input port 69. When this sewing device is used as a sewing machine, the operator can control the sewing speed, start and stop sewing, and control the stitches and thread types via the foot pedal module 68, which is very convenient. The first control system is a sewing machine control system configured within an existing sewing machine control module. The existing sewing head 6 can perform sewing operations under the control of this sewing machine control system.

[0074] In this embodiment, the middle presser foot device 1 includes a housing 2, a first power source 3, a connector 33, and a second control module 12. The shape of the housing 2 is determined according to actual needs. Preferably, the shape of the housing 2 is adapted to the shape of the machine housing 61 in the sewing machine head 6. Figures 8-13 As shown. In implementation, the housing 2 has an internal assembly cavity for installing the required devices or mechanisms. At the same time, the housing 2 also has a first connecting part adapted to the sewing machine head 6, so that the housing 2 can be detachably installed on the sewing machine head 6 of an existing sewing machine through the first connecting part.

[0075] As an example, one side of the shell 2 is provided with a first opening 21, such as... Figure 8 and Figure 10 As shown, the first connecting part can be arranged along the circumferential direction of the first opening 21, so that the housing 2 can be laterally (i.e., radially) butted onto the end of the existing sewing machine housing 61 through the first connecting part, and so that the interior of the housing 2 can be connected to the interior of the sewing machine housing 61 through the first opening 21, so as to facilitate the assembly and transmission connection between the connector 33 and the presser foot 65. At this time, the other side of the housing 2 can be in a closed state, such as... Figure 9 As shown. Of course, in a more preferred embodiment, a second opening 23 is also constructed on the other side of the housing 2. The first opening 21 and the second opening 23 can be respectively connected to the internal assembly cavity, so that the first opening 21 and the second opening 23 can communicate with each other, as shown. Figure 10 and Figure 11 As shown, this allows for convenient assembly and maintenance operations through the second opening 23. Correspondingly, a second connecting portion for connecting the front cover 66 is also constructed along the circumferential direction of the second opening 23, so that the front cover 66 can be used to close the second opening 23, as shown. Figure 12 and Figure 13 As shown, it serves to provide waterproofing and dustproofing. In implementation, the front cover 66 can be assembled with the middle presser foot 11, or it can be the front cover 66 of the existing sewing machine head 6, so that the middle presser foot device 1 can be installed between the front cover 66 and the machine housing 61 of the existing sewing machine, realizing the function of modular assembly and disassembly.

[0076] In this embodiment, the first power source 3 is installed in the housing 2, and the first power source 3 can be driven by the first transmission mechanism to connect to the connector 33. The connector 33 is detachably connected to the presser foot bar 65 in the sewing machine head 6, such as... Figure 13 As shown, the first power source 3 can drive the pressure foot rod 65 to lift and lower via the connector 33. Simultaneously, the first power source 3 is electrically connected to the second control module 12, so that the second control module 12 can control the first power source 3.

[0077] In implementation, the first power source 3 can preferably be an electric motor or a motor. For example, in this embodiment, the first power source 3 is an electric motor, such as a servo motor. In implementation, the first transmission mechanism has various implementation methods; for example, ... Figure 8 , Figure 10 and Figure 13As shown, the first transmission mechanism includes a crank 31 and a connecting rod 32. One end of the crank 31 is connected to a first power 3, which drives the crank 31 to rotate. The two ends of the connecting rod 32 are rotatably connected to the crank 31 and the connector 33, respectively. In implementation, the rotatable connection can be achieved through the cooperation of the hinge hole and the hinge component (such as the hinge shaft or pin). In this embodiment, the first power 3 can drive the crank 31 to rotate, and the rotation of the crank 31 can drive the connector 33 to move up and down, so as to lift or lower the presser foot rod 65, thereby achieving the purpose of lifting the middle presser foot 11 installed on the presser foot rod 65.

[0078] In implementation, the connector 33 can be implemented in various ways, as long as it can be detachably connected to the presser foot rod 65. A detachable connection to the presser foot rod 65 not only facilitates installation and disassembly but also allows for connection between the connector 33 and the presser foot rod 65 without disassembling the presser foot rod 65 and the existing sewing machine head 6, which is very convenient and significantly improves versatility. In implementation, the connector 33 can be a clamp, clamp, buckle, locking structure, or magnetic structure, all of which can achieve connection between the connector 33 and the presser foot rod 65 without disassembling the presser foot rod 65. To improve assembly efficiency, in a preferred embodiment, the connector 33 is constructed with a clamping part adapted to the presser foot rod 65 and a locking hole 36. The clamping part includes two clamping arms 34, such as... Figures 13-14 As shown, a clamping opening 35 for clamping the presser foot rod 65 is provided between the two clamping arms 34, allowing the clamping part to clamp the presser foot rod 65 radially from its side through the clamping opening 35. Correspondingly, a fastener 4 adapted to the locking hole 36 is also included. After the presser foot rod 65 is inserted between the two clamping arms 34, the two clamping arms 34 in the clamping part can be tightened by the cooperation of the fastener 4 and the locking hole 36, so as to achieve efficient connection of the presser foot rod 65. This connector 33 can easily achieve lateral assembly, the assembly process does not require disassembly of the presser foot rod 65, it has lower cost, and better versatility. In implementation, the locking hole 36 and the fastener 4 have various cooperation embodiments. For example, in one embodiment, the two clamping arms 34 are each constructed with a locking hole 36, and the two locking holes 36 correspond to each other, and the two locking holes 36 can be located inside the clamping opening 35, such as... Figures 13-14 As shown. In implementation, the locking hole 36 can be a through hole or a threaded hole, and correspondingly, the fastener 4 can be a bolt or a bolt pair (including a bolt and a nut). This allows the fastener 4 to be used in conjunction with the locking hole 36 to tighten or loosen the two clamping arms 34, thereby facilitating faster completion of lateral assembly work.

[0079] In existing sewing machine heads 6, the end of the housing 61 has an assembly port 62, such as... Figures 1-3As shown, the circumferential direction of the mounting port 62 has several mounting holes 63. These mounting holes 63 are typically threaded holes. The front cover 66 is fixed to the end of the housing 61 by bolts or screws that fit into the mounting holes 63. In implementation, the first connecting part can be adapted to the mounting holes 63 in the sewing machine head 6. For example, the first connecting part may include at least two first mounting holes 22, such as... Figure 8 , Figure 10 and Figure 13 As shown, each first mounting hole 22 corresponds to an assembly hole 63 at the end of the sewing machine housing 61. The assembly hole 63 is typically a threaded hole. Correspondingly, the first mounting hole 22 can be a through hole, a threaded hole, a slotted hole, etc., so that the housing 2 can be installed on the sewing machine housing 61 by fasteners 4 that fit the first mounting hole 22 and the assembly hole 63, thereby closing the second opening 23. When the housing 2 is equipped with a second connecting part, the second connecting part can include a plurality of studs or second mounting holes 24 that fit the front cover 66 in the sewing machine. The second mounting holes 24 can be threaded holes or through holes, etc., so that the front cover 66 in the existing sewing machine can be assembled on the housing 2 of the middle presser foot device 1. Moreover, in a preferred embodiment, each second mounting hole 24 can correspond to each first mounting hole 22, and each second mounting hole 24 can be connected to the corresponding first mounting hole 22, or they can be disconnected.

[0080] In this embodiment, after the housing 2 of the presser foot device 1 is installed on the housing 61 of the sewing machine head 6, and the connector 33 is connected to the presser foot bar 65 of the sewing machine head 6, the mechanical assembly is basically completed. In terms of electrical control, the second control module 12 is electrically connected to the encoder 72, such as... Figure 6 As shown, the encoder 72 is used to obtain the operating status of the main shaft inside the sewing machine head 6. That is, the encoder 72 can be electrically connected to the first control module 71 and the second control module 12 respectively, so that the first control module 71 and the second control module 12 can respectively obtain the operating status of the main shaft inside the sewing machine head 6, thereby obtaining the status of the entire sewing machine head 6. To facilitate wiring operations, a first adapter 73 is also included in the implementation, such as... Figure 6 As shown, encoder 72 can be connected to first adapter 73 via wires, and first adapter 73 can be connected to first control module 71 and second control module 12 via wires respectively. In implementation, configuring first adapter 73 facilitates both wiring operations and the transmission of signals from encoder 72 to first control module 71 and second control module 12. In implementation, first adapter 73 can be an existing adapter, such as a one-to-two adapter.

[0081] In this embodiment, the second control module 12 is also electrically connected to the foot pedal input port 69 of the sewing machine device, so as to send control signals to the sewing machine head 6 through the foot pedal input port 69, so that the second control module 12 can control the sewing machine head 6 to perform sewing actions. To facilitate wiring operations, a second adapter 74 is also included in the implementation, such as... Figure 6 As shown, the foot pedal module 68 can be connected to the second adapter 74 via a wire. The second adapter 74 can be connected to the foot pedal input port 69 and the second control module 12 via wires, allowing the foot pedal module 68, foot pedal input port 69, and second control module 12 to communicate with each other. Therefore, during actual operation, the signals generated by the foot pedal module 68 can be sent to the first control module 71 and the second control module 12 respectively. At the same time, the second control module 12 can also obtain the operating status of the sewing machine device through the foot pedal module 68 or the first control module 71. This operating status includes the parameters of the spindle and the parameters of the sewing machine device. The second control module 12 can also send control signals to the first control module 71 through the foot pedal input port 69 so that the first control module 71 can control the sewing head 6 to perform sewing operations.

[0082] In this embodiment, the second control module 12 is equipped with a second control system, which can preferably be a template machine control system or a pattern machine control system. In this embodiment, since the second control module 12 can control the first power 3 and also the machine head 6, it can control the lifting and lowering of the presser foot lever 65 in coordination with the movement of the needle bar 64. This allows the presser foot lever 65 in the sewing machine head 6 to function as a presser foot lever 65, thus enabling the sewing machine head 6 equipped with the middle presser foot device 1 to have the function of a middle presser foot 11. When the second control system is running independently, the presser foot 67 at the lower end of the presser foot lever 65 can be replaced with a middle presser foot 11. Therefore, when the second control system uses a template machine control system, this sewing equipment can be used as both a template machine and a sewing machine. When the second control system uses a pattern machine control system, this sewing equipment can be used as both a pattern machine and a sewing machine. In implementation, the second control module 12 can be an existing control module (including a controller and a motor driver) within a template machine or a control module within a pattern making machine. It is understood that in this embodiment, the second control system refers to the software configured in the second control module 12, which can fully utilize existing technology and will not be elaborated further here.

[0083] For ease of use and operation, a more comprehensive design includes a first control panel on the sewing machine head 6. The first control panel is electrically connected to the first control module 71, allowing for the setting or adjustment of relevant parameters. Similarly, the presser foot device 1 may include a second control panel on the housing 2, with the second control surface electrically connected to the second control module 12, allowing for the setting or adjustment of relevant parameters.

[0084] In practice, the sewing head 6 can be mounted on the sewing table 9, such as... Figure 4 and Figure 5 As shown, the sewing table 9 can serve as both a sewing work platform and a support for the sewing machine head 6. The sewing table 9 can be implemented using existing structures. For example, the sewing table 9 includes a frame and a platform mounted on the frame, such as... Figure 4 and Figure 5 As shown, the housing 61 is connected to the frame, which provides support, and the sewing table can be used as a workbench during sewing.

[0085] In a more complete solution, this device also includes an XY module 8, such as... Figure 4 As shown, the XY module 8 can be a commonly used XY module 8 in existing template machines or pattern machines, mainly used to adjust the position of the pressing frame. In this embodiment, the XY module 8 includes an X-axis motion module disposed on the sewing table 9, a Y-axis motion module drivenly connected to the X-axis motion module, and a bracket 81 drivenly connected to the Y-axis motion module. The bracket 81 is equipped with several clamping heads for clamping the pressing frame, such as... Figure 4 As shown, the clamping head is typically a pneumatic clamping head. The X-axis motion module and the Y-axis motion module can be electrically connected to the second control module 12 via wires, so that the second control module 12 can control the coordinated movement of the XY module 8, the needle bar 64, and the presser foot bar 65 to better realize the function of the template machine or pattern machine. In implementation, the X-axis motion module and the Y-axis motion module can be existing linear modules, which are very mature technologies and will not be elaborated here.

[0086] Of course, a more complete solution would also include a main switch 78 and a power plug 79, such as... Figure 7 As shown, the sewing machine assembly further includes a first power module 76 for supplying power, as illustrated, the first power module 76 supplying power to the various electrical components within the sewing machine assembly. Simultaneously, the presser foot assembly 1 also includes a second power module 77 for supplying power, so that the second power module 77 can supply power to the various electrical components within the presser foot assembly 1. Figure 7As shown, in implementation, the power plug 79 can be connected to the main switch 78 via a wire. The main switch 78 can be connected to the first power module 76 and the second power module 77 respectively. In use, the power plug 79 can be connected to the mains power, and the main switch 78 can control the power supply to and from the device.

[0087] In implementation, the first power module 76 can be located inside the housing 61 of the machine head 6 or on the sewing table 9. The second power module 77 can be located inside the housing 2 of the presser foot device 1 or on the sewing table 9. Similarly, in implementation, the first control module 71 can be located inside the housing 61 of the machine head 6 or on the sewing table 9. The second control module 12 can be located inside the housing 2 of the presser foot device 1 or on the sewing table 9.

[0088] In practical use, the sewing head 6 of this sewing equipment can perform sewing operations under the control of the first control module 71 (equipped with a first control system), thus enabling the sewing equipment to function as a sewing machine. The sewing head 6 can also perform a second type of sewing operation under the control of the second control module 12 (equipped with a second control system), allowing the sewing equipment to function as a template sewing machine or a pattern sewing machine, thus enabling it to perform two different sewing operations. More specifically, in practical use, when the sewing equipment is used as a sewing machine, a presser foot 67 is installed at the lower end of the presser foot lever 65; when the sewing equipment is used as a template sewing machine or a pattern sewing machine, a middle presser foot 11 is installed at the lower end of the presser foot lever 65. In this case, the presser foot lever 65 is equivalent to the presser foot lever 65 in the template sewing machine or the pattern sewing machine. Example 2

[0089] To address the issue of improving sewing accuracy in the second control system, the main difference between this embodiment 2 and the aforementioned embodiment 1 is that the sewing equipment provided in this embodiment further includes a stop switch 75 in the middle presser foot device 1. Figure 15As shown, the blocking switch 75 is connected in series between the foot pedal module 68 and the second adapter 74 to control the on / off state of the foot pedal module 68 and the second adapter 74. In implementation, by configuring the blocking switch 75, when sewing operations are required using the first control system, the blocking switch 75 can be disconnected, allowing the second control module 12 to connect only to the foot pedal input port 69. At this time, the foot pedal module 68 is disabled, and only the second control module 12 is connected to the foot pedal input port 69. Even if a worker accidentally touches the foot pedal module 68, no signal will be transmitted to the foot pedal input port 69, thus blocking the signal and effectively preventing the foot pedal module 68 from affecting the normal operation of the second control system, thereby improving the sewing accuracy of the second control system. When the blocking switch 75 is closed, the foot pedal input port 69 is simultaneously connected to both the first control module 71 and the second control module 12, so that signals can be transmitted to both control modules synchronously.

[0090] In implementation, the blocking switch 75 can be a manual switch for manual opening and closing. Alternatively, the blocking switch 75 can be a switch capable of remote control, such as... Figure 15 As shown, at this time, the second control module 12 can be electrically connected to the blocking switch 75 so that the blocking switch 75 can be opened or closed using the second control module 12, which is more convenient to use. In practice, when it needs to be used as a template machine or pattern machine, the blocking switch 75 can be closed to connect the foot pedal module 68 to the foot pedal input port 69 so that the second control module 12 can be used to control the sewing head 6 to perform sewing operations. Example 3

[0091] To address the issue of the auxiliary presser foot 52 function in this sewing equipment, the main difference between this embodiment 3 and the previous embodiment is that, in the sewing equipment provided in this embodiment, the presser foot device 1 further includes an auxiliary presser foot module. The auxiliary presser foot module includes a second power source 5, an auxiliary presser rod 51, and an auxiliary presser foot 52. The second power source 5 is installed in the housing 2. In implementation, the second power source 5 can preferably be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The auxiliary presser rod 51 is movably and vertically constrained to the housing 2, and the lower end of the auxiliary presser rod 51 extends beyond the housing 2. Figures 8-13 As shown, the auxiliary pressure foot 52 is installed at the lower end of the auxiliary pressure rod 51, as... Figure 11 As shown.

[0092] In this embodiment, the second power 5 is connected to the auxiliary presser bar 51 via a transmission. The second control module 12 is used to control the second power 5 so that the second power 5 can drive the auxiliary presser foot 52 to lift or lower, thereby enabling the device to have the function of the auxiliary presser foot 52. When the sewing device is used as a template machine or a pattern machine, it also has the function of the auxiliary presser foot 52.

[0093] In a more refined design, the housing 2 is also provided with a vertical guide portion 25, such as... Figure 11 As shown, the vertical guide part 25 can be a guide groove or a guide rail. Correspondingly, the auxiliary pressure rod 51 is also connected to a guide block 53 adapted to the vertical guide part 25. The guide block 53 is movably constrained to the vertical guide part 25 so as to guide the up and down movement of the auxiliary pressure rod 51 through the cooperation between the guide block 53 and the vertical guide part 25. Example 4

[0094] This embodiment 4 provides a method for constructing the above-mentioned sewing device, including the following steps:

[0095] Step 1: Prepare a set of the aforementioned presser foot device 1, and prepare a set of XY modules 8 and a sewing machine. The sewing machine can preferably be an existing flatbed sewing machine. The sewing machine includes a machine head 6, a first control module 71 and a sewing table 9.

[0096] Step 2: Remove the front cover 66 at the end of the sewing machine head 6, exposing the mounting holes 63 at the end of the machine housing 61. Figure 3 As shown; the connector 33 in the middle pressure foot device 1 is connected from the pressure foot rod 65 to the pressure foot rod 65, as follows. Figure 13 As shown, the first power 3 can drive the presser foot lever 65 in the sewing machine to lift or lower (i.e., move up and down); and the housing 2 in the middle presser foot device 1 is fixed to the end of the machine housing 61 using fasteners 4, as shown. Figure 4 and Figure 5 As shown. When the middle pressure foot device 1 is provided with a second opening 23, the front cover 66 can be fixed to the housing 2 of the middle pressure foot device 1 to close the middle pressure foot device 1.

[0097] Step 3: Electrically connect the second control module 12 in the middle presser foot device 1 to the motor encoder 72 of the main shaft in the sewing machine using a wire, such as... Figure 6 As shown, this allows the second control module 12 to obtain the operating status of the main shaft inside the machine head 6 via the encoder 72. In implementation, each wire of the motor 60 can be electrically connected to the second control module 12, or only the wires of the motor 60 corresponding to the encoder 72 can be electrically connected to the second control module 12.

[0098] Step 4: Electrically connect the second control module 12 in the middle presser foot device 1 to the foot pedal input port 69 in the sewing machine using a wire. For example... Figure 6 As shown, this allows the second control module 12 to send control signals to the sewing machine head 6 via the foot pedal input port 69.

[0099] Step 5, install the XY module 8 onto the sewing table 9, as follows: Figure 4As shown, the XY module 8 is electrically connected to the second control module 12 in the middle pressure foot device 1 so that the second control module 12 can control the operation of the XY module 8.

[0100] This method allows for the convenient, efficient, and low-cost conversion of existing sewing machines (such as flatbed sewing machines) into dual-system sewing equipment. This allows them to be used not only as a sewing machine but also as a pattern-making or design machine. It is particularly suitable for situations where a sewing machine is already installed and pattern-making functionality is required. Example 5

[0101] This embodiment 5 provides a method for constructing the above-mentioned sewing device, including the following steps:

[0102] Step 1: Prepare a set of the aforementioned presser foot device 1, and prepare a set of XY modules 8, a sewing table 9, and a set of sewing machine devices. The sewing machine devices include a sewing machine head 6 and a first control module 71 adapted to the sewing machine head 6.

[0103] Step 2: Install the XY module 8 and the sewing head 6 onto the sewing table 9 respectively, and install the first control module 71 inside the sewing head 6 or onto the sewing table 9, as follows. Figure 4 As shown.

[0104] Step 3: Remove the front cover 66 at the end of the sewing machine head 6, so that the mounting holes 63 at the end of the machine housing 61 are exposed, such as... Figure 3 As shown; connect the connector 33 in the middle pressure foot device 1 to the pressure foot rod 65, as follows. Figure 13 As shown, the first power 3 can drive the presser foot lever 65 in the sewing machine to lift or lower (i.e., move up and down); and the housing 2 in the middle presser foot device 1 is fixed to the end of the machine housing 61 using fasteners 4, as shown. Figure 4 and Figure 5 As shown. When the middle pressure foot device 1 is provided with a second opening 23, the front cover 66 can be fixed to the housing 2 of the middle pressure foot device 1 to close the middle pressure foot device 1.

[0105] Step 4: Electrically connect the second control module 12 in the middle presser foot device 1 to the motor encoder 72 of the main shaft in the sewing machine using a wire, such as... Figure 6 As shown, this allows the second control module 12 to obtain the operating status of the main shaft inside the machine head 6 via the encoder 72. In implementation, each wire of the motor 60 can be electrically connected to the second control module 12, or only the wires of the motor 60 corresponding to the encoder 72 can be electrically connected to the second control module 12.

[0106] Step 5: Electrically connect the second control module 12 in the middle presser foot device 1 to the foot pedal input port 69 in the sewing machine using a wire, such as... Figure 6As shown, this allows the second control module 12 to send control signals to the sewing machine head 6 via the foot pedal input port 69.

[0107] Step 6: Electrically connect the XY module 8 to the second control module 12 in the middle pressure foot device 1, such as... Figure 6 As shown, this is so that the second control module 12 can be used to control the operation of the XY module 8.

[0108] Using this method, a brand-new sewing equipment with dual systems can be produced. It can be used not only as a sewing machine, but also as a template machine or pattern machine. This allows two sewing operation modes to be achieved in the same sewing equipment while keeping the size the same or even smaller. This not only allows more equipment to be installed in a limited space and increases sewing output, but also enables users to perform different sewing operations according to actual needs, meeting different sewing requirements. It is more versatile and can significantly reduce costs.

[0109] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A sewing device comprising a sewing machine device, the sewing machine device comprising a sewing machine head and a first control module, the sewing machine head comprising a machine housing, a needle bar, a presser bar, a main shaft and a motor, the motor being configured with an encoder, the motor and the encoder being electrically connected with the first control module respectively, the motor being in driving connection with the main shaft, the main shaft being in driving connection with the needle bar, the first control module being configured with a foot input port and a first control system, the first control system being a sewing machine control system, characterized in that, It also includes a middle presser foot device and a sewing table; The machine head is mounted on the sewing table. The middle presser foot device includes a housing, a first power source, a connector, fasteners, and a second control module. The housing is configured with a first connecting part adapted to the machine head, and the housing is detachably connected to the machine housing through the first connecting part. The first power source is installed in the housing and is connected to the connector. The connector has a clamping part adapted to the presser foot bar and a locking hole adapted to the fastener. The clamping part includes two clamping arms, and there is a clamping port between the two clamping arms for clamping the presser foot bar. The clamping part is used to clamp the presser foot bar radially. The fastener is used to tighten the two clamping arms in the clamping part, so that the connector is detachably connected to the presser foot bar. The second control module is electrically connected to the encoder and is used to acquire the operating status of the main shaft inside the sewing machine head. The second control module is also electrically connected to the foot pedal input port and is used to send control signals to the sewing machine head. The second control module is equipped with a second control system, which is a template machine control system or a pattern machine control system. The first power is electrically connected to the second control module and is used to drive the presser foot rod to lift or lower.

2. The sewing equipment according to claim 1, characterized in that, The sewing machine device further includes a first control panel, which is disposed on the machine head and the first control surface is electrically connected to the first control module. And / or, the middle pressure foot device further includes a second control panel, which is disposed in the housing, and the second control surface is electrically connected to the second control module.

3. The sewing equipment according to claim 1, characterized in that, The sewing machine device also includes a foot pedal module for the sewing machine, which is electrically connected to the first control module through the foot pedal input port.

4. The sewing equipment according to claim 3, characterized in that, It also includes a first adapter, through which the encoder is connected to the first control module and the second control module respectively; And / or, it also includes a second adapter, through which the foot pedal module is connected to the foot pedal input port and the second control module respectively.

5. The sewing equipment according to claim 3, characterized in that, It also includes a main switch and a power plug, and the sewing machine assembly further includes a first power module for supplying power. The middle pressure foot device also includes a second power module for power supply. The power plug is connected to the main switch via a wire. The main switch is connected to the first power module and the second power module respectively.

6. The sewing equipment according to claim 1, characterized in that, The pressure foot device further includes an auxiliary pressure foot module, which comprises a second power source, an auxiliary pressure rod, and an auxiliary pressure foot. The second power source is mounted on the housing. The auxiliary pressure rod is movably and vertically constrained by the housing, with its lower end extending outside the housing. The auxiliary pressure foot is mounted on the lower end of the auxiliary pressure rod. The second power source is connected to the auxiliary pressure rod via a transmission. The second control module is used to control the second power source, which is used to drive the auxiliary pressure foot to lift or lower.

7. The sewing equipment according to claim 1, characterized in that, It also includes an XY module, which includes an X-axis motion module mounted on the sewing table, a Y-axis motion module that is driven to connect the X-axis motion module, and a bracket that is driven to connect the Y-axis motion module. The bracket is equipped with several clamping heads for clamping the presser foot. The X-axis motion module and the Y-axis motion module are electrically connected to the second control module, which is used to control the XY module, the needle bar, and the presser foot bar to work together.

8. A method for constructing the sewing device according to any one of claims 1-7, comprising, Prepare a set of the aforementioned presser foot device, and prepare a set of XY modules and a sewing machine, the sewing machine including a sewing head, a first control module and a sewing table; Remove the front cover at the end of the sewing machine head, connect the connector in the middle presser foot device to the presser foot bar, and use fasteners to fix the housing in the middle presser foot device to the end of the machine housing; The second control module in the middle presser foot device is electrically connected to the motor encoder of the main shaft in the sewing machine using a wire, so that the second control module can obtain the running status of the main shaft in the machine head through the encoder; The second control module in the middle pressure foot device is electrically connected to the foot pedal input port in the sewing machine using a wire, so that the second control module sends control signals to the sewing machine head through the foot pedal input port; The XY module is installed on the sewing table, and the XY module is electrically connected to the second control module in the middle presser foot device. The second control module is used to control the movement of the XY module.

9. A method for constructing the sewing device according to any one of claims 1-7, comprising, Prepare a set of the aforementioned presser foot device, and prepare a set of XY modules, a sewing table, and a set of sewing machine devices, wherein the sewing machine device includes a sewing machine head and a first control module adapted to the sewing machine head; The XY module and the sewing head are respectively installed on the sewing table, and the first control module is installed on the sewing head or the sewing table; Remove the front cover at the end of the sewing machine head, connect the connector in the middle presser foot device to the presser foot bar, and use fasteners to fix the housing in the middle presser foot device to the end of the machine housing; The second control module in the middle presser foot device is electrically connected to the motor encoder of the main shaft in the sewing machine using a wire, so that the second control module can obtain the running status of the main shaft in the machine head through the encoder; The second control module in the middle pressure foot device is electrically connected to the foot pedal input port in the sewing machine using a wire, so that the second control module sends control signals to the sewing machine head through the foot pedal input port; The XY module is electrically connected to the second control module in the middle pressure foot device, and the second control module is used to control the operation of the XY module.

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