Computer sewing machine

Abstract

The utility model relates to a computer sewing machine which comprises a machine shell, a first power device, a main shaft, a connecting rod mechanism, a presser foot rod and a control module, the first power device is in transmission connection with the main shaft, the main shaft is in transmission connection with the connecting rod mechanism, the connecting rod mechanism is in transmission connection with the presser foot rod, and the presser foot rod is arranged on the machine shell in a lifting mode. The first power drives the presser foot rod to periodically ascend and descend; the second power is in transmission connection with the connecting rod mechanism or the presser foot rod, the control module is connected with the second power, and the second power is used for being matched with the first power under the control of the control module to jointly drive the presser foot rod so as to change the lifting period of the presser foot rod; according to the computer sewing machine, the action period of the presser foot can be adjusted according to actual requirements, the speed of the presser foot is increased, and the use range and universality of the computer sewing machine are effectively improved; and the take-up quantity can be obviously improved, so that the stitch is more attractive, and the take-up is more attractive.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field, concretely relates to a computer sewing machine. BACKGROUND

[0002] Since the computer sewing machine (referred to as sewing machine) can automatically and quickly sew various materials and patterns under the accurate control of its computer system, it is widely used in the sewing production of various quilts, bed covers, sleeping bags, mattresses, textile decorations and the like. The existing computer sewing machine usually comprises a machine shell, a needle bar mechanism, a middle presser foot mechanism and a rotating shuttle mechanism, wherein the middle presser foot mechanism is provided with a middle presser foot that can be lifted and lowered, the middle presser foot can press the cloth below during sewing and can lift the presser foot after sewing to facilitate taking away the fabric. The needle bar mechanism is arranged above the rotating shuttle mechanism and is provided with a needle that cooperates with the rotating shuttle mechanism to complete the sewing work after the cloth is pressed.

[0003] The existing computer sewing machine (referred to as sewing machine) usually further comprises a main motor and a main shaft, the main motor is in driving connection with the main shaft, the main shaft is in driving connection with the needle bar mechanism for driving the needle to perform up-and-down piercing action; meanwhile, in some traditional computer sewing machines, the main shaft is also in driving connection with the middle presser foot mechanism, so that the main shaft can drive the middle presser foot and the needle to perform synchronous action; that is, when the middle presser foot presses the fabric, the stroke of the middle presser foot is synchronized with the needle bar, and the lifting action of the middle presser foot has a fixed period. However, on the one hand, since the period of the lifting action of the middle presser foot in the existing sewing machine is fixed, it is suitable for sewing fabrics of a certain thickness, but cannot meet the needs of sewing some thick materials; on the other hand, since the stroke of the middle presser foot is synchronized with the needle bar when the middle presser foot presses the fabric, the middle presser foot also runs up when the thread is pulled, and the speed of the middle presser foot is slow, the thread take-up amount is not enough, resulting in unattractive stitches, which needs to be solved urgently. SUMMARY

[0004] The first aspect of the utility model solves the above problems, provides a computer sewing machine, which can not only adjust the action period of the presser foot according to actual needs, effectively improve the use range and universality of the computer sewing machine, but also can significantly improve the thread take-up amount, make the stitches look better, and the thread take-up look more beautiful, and the main idea is that:

[0005] A computer sewing machine comprises a machine shell, a first power source, a main shaft, a connecting rod mechanism, a presser foot rod and a control module, the first power source is in driving connection with the main shaft, the main shaft is in driving connection with the connecting rod mechanism, the connecting rod mechanism is in driving connection with the presser foot rod, the presser foot rod is arranged on the machine shell in a liftable manner, the control module is connected with the first power source, and the first power source drives the presser foot rod to perform periodic lifting action.

[0006] The second power is connected with the connecting rod mechanism or the presser foot rod in transmission, the control module is connected with the second power, and the second power is used for driving the presser foot rod together with the first power under the control of the control module to change the lifting period of the presser foot rod.

[0007] The utility model discloses a second aspect to solve the problem that the second power cooperates with the first power, and the utility model further discloses a swing structure and a limiting structure, the second power is connected with the swing structure in transmission and is used for driving the swing structure to swing, and the limiting structure is rotatably connected with the connecting rod mechanism or the presser foot rod and is movably constrained to the swing structure.

[0008] Preferably, the limiting structure is configured with a hinge hole or a hinge shaft, and the limiting structure is rotatably connected to the connecting rod mechanism or the presser bar through the hinge hole or the hinge shaft; the swing structure is configured with a guide portion matched with the limiting structure, and the limiting structure is limited and constrained in the guide portion and can move along the guide portion. By configuring the hinge hole or the hinge shaft in the limiting structure, the limiting structure is rotatably installed; by configuring the guide portion matched with the limiting structure in the swing structure and limiting the limiting structure in the guide portion, the swing structure can lift the entire connecting rod mechanism and the presser bar through the limiting structure without interference in the process of swinging of the swing structure, which is beneficial to the faster lifting and pressing of the presser.

[0009] Preferably, the limiting structure is configured with a hinge hole, and the limiting structure is rotatably sleeved in the hinge piece in the connecting rod mechanism through the hinge hole. This is not only beneficial to simplifying the structure, but also convenient for assembly.

[0010] The third aspect of the utility model further includes a swing structure and a limiting structure, the second power is in transmission connection with the swing structure and is used for driving the swing structure to swing, the limiting structure is arranged in the connecting rod mechanism or the presser bar, the swing structure and the limiting structure form a limiting cooperation, and the swing structure can move relative to the limiting structure and can rotate relative to the limiting structure. In the scheme, the swing structure is configured to be capable of moving relative to the limiting structure and rotating relative to the limiting structure, so that the presser can be lifted and pressed more quickly, and the cooperation process of the first power and the second power and the separate operation process do not interfere, and the universality is stronger.

[0011] Preferably, the limiting structure includes a limiting portion, and the outer side surface of the limiting portion is configured as a cylindrical structure; the swing structure is configured with a guide portion matched with the limiting portion, the limiting portion is inserted into the guide portion, and the limiting portion and the guide portion form a moving pair. By matching the limiting portion with the guide portion, the swing structure can drive the presser bar to move through the limiting portion, and the swing structure can move relative to the limiting portion, so that interference is avoided.

[0012] Preferably, the limiting structure includes a guide portion, the swing structure is provided with a limiting portion matched with the guide portion, the outer side surface of the limiting portion is configured as a cylindrical structure, the limiting portion is inserted into the guide portion, and the limiting portion and the guide portion form a moving pair. By matching the limiting portion with the guide portion, the swing structure can drive the presser bar to move through the limiting portion, and the swing structure can move relative to the limiting portion, so that interference is avoided.

[0013] In the preferred solution, the limiting structure comprises a guide portion, the swing structure is provided with a limiting portion matched with the guide portion, the limiting portion is rotatably arranged on the swing structure, the limiting portion is inserted into the guide portion, and the limiting portion and the guide portion form a moving pair. Through the cooperation of the limiting portion and the guide portion, the swing structure can be driven by the limiting portion to act on the presser bar, and the swing structure can move relative to the limiting portion to avoid interference.

[0014] Preferably, the guide portion is a slot hole or a forked mouth.

[0015] In order to simplify the structure, further comprising a first rotating shaft rotatably arranged on the machine shell, the main shaft is in transmission connection with one end of the first rotating shaft, and the other end of the first rotating shaft is in transmission connection with the connecting rod mechanism. The main shaft can drive the connecting rod mechanism to act through the first rotating shaft, which can effectively simplify the structure and facilitate assembly.

[0016] In order to simplify the structure, further comprising a second rotating shaft rotatably arranged on the machine shell, the second power is in transmission connection with one end of the second rotating shaft, and the other end of the second rotating shaft is in transmission connection with the swing structure. Not only can the presser bar be driven by the second power, but also the first power and the second power can be arranged on the same side of the connecting rod mechanism, so that the first power, the second power and the corresponding transmission mechanism can be arranged in the machine shell, which is conducive to the structure of the whole computer sewing machine being more compact and small.

[0017] Preferably, the second power is in transmission connection with the second rotating shaft through a gear transmission mechanism. Not only can the gear transmission mechanism play a transmission role, but also can play a role of speed reduction.

[0018] Preferably, the first rotating shaft is parallel to the main shaft; and the second rotating shaft is parallel to the main shaft.

[0019] Preferably, the connecting rod mechanism comprises a swing piece, a first transmission piece, a second transmission piece, a third transmission piece and an auxiliary piece, wherein the swing piece is fixedly connected to the first rotating shaft, the main shaft drives the swing piece to swing through the first rotating shaft, one end of the first transmission piece is rotatably connected to the swing piece, the other end of the first transmission piece is rotatably connected to the second transmission piece, the second transmission piece is rotatably connected to one end of the third transmission piece, the other end of the third transmission piece is rotatably connected to a connecting head, and the connecting head is fixedly connected to the presser bar; one end of the auxiliary piece is rotatably connected to the machine shell, and the other end of the auxiliary piece is rotatably connected to the second transmission piece. In actual use, the first power drives the swing piece to swing, and the swing piece lifts the presser bar upward or presses the presser bar downward through the connecting rod mechanism, so as to achieve the purpose of lifting the presser foot or pressing the presser foot.

[0020] Further, the needle rod is arranged on the casing in a liftable manner, and the main shaft is connected with the needle rod through a needle rod transmission mechanism, so that the needle rod is driven to perform a puncture action.

[0021] Preferably, the first power is a servo motor, and the second power is also a servo motor, so that the first power and the second power can be accurately controlled and matched.

[0022] Further, the presser foot is connected with the presser foot rod.

[0023] Compared with the prior art, the computerized sewing machine provided by the utility model can adjust the action period of the presser foot according to actual requirements, improve the speed of the presser foot, and effectively improve the use range and versatility of the computerized sewing machine, and can significantly improve the thread take-up amount, so that the stitches are better and the thread take-up is more beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical schemes of the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0025] Figure 1 A partial structure schematic view of the computerized sewing machine provided by the embodiment 1 of the utility model.

[0026] Figure 2 A structure schematic view of a connecting rod mechanism in the computerized sewing machine provided by the embodiment 1 of the utility model, without assembling auxiliary parts.

[0027] Figure 3 A structure schematic view of the connecting rod mechanism in the computerized sewing machine provided by the embodiment 1 of the utility model, without assembling a swing structure.

[0028] Figure 4 A Figure 3 Motion diagram of the connecting rod mechanism.

[0029] Figure 5 Motion diagram of the connecting rod mechanism in the computerized sewing machine provided by the embodiment 1 of the utility model.

[0030] Figure 6 Motion diagram of another connecting rod mechanism in the computerized sewing machine provided by the embodiment 1 of the utility model.

[0031] Figure 7A partial structure schematic view of a brain flower machine is provided for the embodiment 1 of the utility model, corresponding Figure 5 .

[0032] Figure 8 Another partial structure schematic view of a brain flower machine is provided for the embodiment 1 of the utility model, corresponding Figure 5 .

[0033] Figure 9 A partial structure schematic view of a brain flower machine is provided for the embodiment 1 of the utility model.

[0034] Figure 10 Another partial structure schematic view of a brain flower machine is provided for the embodiment 1 of the utility model.

[0035] Figure 11 A motion diagram of a connecting rod mechanism is provided for the embodiment 2 of the utility model, for setting swing structure.

[0036] Figure 12 Another motion diagram of a connecting rod mechanism is provided for the embodiment 2 of the utility model.

[0037] Figure 13 Still another motion diagram of a connecting rod mechanism is provided for the embodiment 2 of the utility model.

[0038] Figure 14 A partial structure schematic view of swing structure is provided for the embodiment 3 of the utility model in a brain flower machine.

[0039] Figure 15 Another partial structure schematic view of swing structure is provided for the embodiment 3 of the utility model in a brain flower machine.

[0040] Figure 16 Still another partial structure schematic view of swing structure is provided for the embodiment 3 of the utility model in a brain flower machine.

[0041] Marking in the drawing: casing 1, first power 2, shaft coupling 21, main shaft 22, eccentric part 23, transmission arm 24, swing arm 25, first rotating shaft 26, swing piece 27, connecting rod mechanism 28, second power 3, driving gear 31, driven gear 32, second rotating shaft 33, swing structure 34, strip hole 35, prong mouth 36, guide rod 37, presser bar 41, presser foot 42, spring 43, connecting head 44, first transmission piece 51, second transmission piece 52, third transmission piece 53, auxiliary piece 54, hinged piece 55, limiting structure 56, hinged hole 57, guide hole 58, limiting part 59. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0043] Embodiment 1

[0044] A computerized sewing machine is provided in the embodiment, which comprises a casing 1 for bearing, a first power 2, a main shaft 22, a connecting rod mechanism 28, a presser bar 41, a presser foot 42, a needle bar, a needle and a control module, etc., wherein, as shown in the drawings, the main shaft 22 is a core component for driving the sewing part in the computerized sewing machine, through the rotary motion of the main shaft 22, other related components can be driven to work cooperatively, in the embodiment, the main shaft 22 is rotatably installed in the casing 1, for example, the main shaft 22 can be connected to the casing 1 through a bearing. Figure 1

[0045] In the embodiment, the first power 2 can preferably adopt a servo motor, of course, in implementation, the first power 2 can also adopt a stepping motor. The first power 2 is fixed in the casing 1, and the first power 2 is in transmission connection with the main shaft 22, in implementation, the first power 2 can realize transmission connection with the main shaft 22 through existing technology, for example, in the embodiment, the first power 2 is in transmission connection with the main shaft 22 through a shaft coupling 21, so as to drive the main shaft 22 to rotate, as shown in the drawings. Figure 1

[0046] In the embodiment, the needle bar is arranged to be liftable in the casing 1, and the needle is installed at the lower end of the needle bar; the main shaft 22 is in transmission connection with the needle bar through a needle bar transmission mechanism, so as to drive the needle bar to vertically lift by the rotation of the main shaft 22. In the embodiment, the needle bar transmission mechanism can be realized through existing technology, for example, the needle bar transmission mechanism in Chinese patent CN107447377B, the needle bar transmission mechanism in CN104762760B, the needle bar transmission mechanism in CN118547437A, etc., which will not be illustrated one by one here.

[0047] ​​In the embodiment, the control module is connected with the first power 2, so as to control the first power 2 by the control module. In practice, the control module can be directly or indirectly connected (communicatively connected) with the first power 2, as long as the first power 2 can be controlled. In operation, the first power 2 can drive the needle rod to perform the puncture action under the control of the control module.

[0048] In practice, the control module can be a control module commonly used in existing sewing machines. The control module can include a controller or a control circuit, and the like, which will not be illustrated one by one herein.

[0049] In the embodiment, the presser bar 41 is arranged in the casing 1 and has the freedom of lifting relative to the casing 1. The presser 42 is connected to the presser bar 41. In practice, the presser bar 41 is further sleeved with a spring 43, as shown in Figure 2 and Figure 3 In the embodiment, the main shaft 22 is in transmission connection with the connecting rod mechanism 28, so as to drive the connecting rod mechanism 28 to act. Meanwhile, the connecting rod mechanism 28 is in transmission connection with the presser bar 41, so as to drive the presser bar 41 to perform the lifting action. In practice, the presser 42 can be a conventional presser 42, which is mainly used to press the fabric below, so as to cooperate with the needle and perform the sewing. The presser 42 can have various forms, which will not be illustrated one by one herein. In operation, the first power 2 can drive the presser bar 41 to perform the periodic lifting action under the control of the control module, as shown in Figure 3 and Figure 4 so as to lift the presser 42 and press the presser 42. In the embodiment, the first power 2 can not only drive the needle rod to perform the puncture action, but also drive the presser bar 41 to perform the lifting action. In practice, when the presser bar 41 only performs the lifting action under the action of the first power 2, the lifting action of the presser bar 41 is periodic, the period is fixed, and the time required for the presser bar 41 to rise and the time required for the presser bar 41 to fall are fixed.

[0050] The computerized sewing machine provided in the embodiment further includes a second power 3, as shown in Figure 1As shown, the second power 3 is in transmission connection with the connecting rod mechanism 28 or the presser bar 41, so as to lift or press the connecting rod mechanism 28 and the presser bar 41 as a whole by the second power 3; meanwhile, the control module is connected with the second power 3, so as to control the second power 3 by the control module, in implementation, the control module can be directly or indirectly connected with (communication connection, including wired or wireless communication) the second power 3, as long as the second power 3 can be controlled, in operation, the second power 3 can be cooperated with the first power 2 under the control of the control module, and drive the presser bar 41 together with the first power 2, due to the intervention of the second power 3, the lifting cycle of the presser bar 41 can be effectively changed, for example, in the process that the control module controls the first power 2 to drive the presser bar 41 to lift, the control module can control the second power 3 to lift the connecting rod mechanism 28 and the presser bar 41 as a whole, so as to accelerate the lifting speed of the presser 42, so that the presser 42 can be lifted more quickly and efficiently; for another example, in the process that the control module controls the first power 2 to drive the presser bar 41 to press, the control module can control the second power 3 to press the connecting rod mechanism 28 and the presser bar 41 as a whole, so as to accelerate the pressing speed of the presser 42, so that the presser 42 can be pressed more quickly and efficiently; due to the cooperation of the first power 2 and the second power 3, the lifting cycle of the presser bar 41 can be effectively changed, not only the lifting cycle of the presser bar 41 is shorter and more efficient (the efficiency can be doubled), but also the lifting action of the presser bar 41 is not periodic, that is, the period is not fixed, the time required for the presser bar 41 to rise and the time required for the presser bar 41 to fall is variable, so that more sewing requirements can be met, and the versatility is significantly improved. That is to say, in the embodiment, in the case that only the first power 2 is used to drive the presser bar 41, the motion trajectory of the presser bar 41 is determined and orderly, and in the case that the first power 2 and the second power 3 are used to drive the presser bar 41 at the same time, the motion trajectory of the presser bar 41 becomes curve motion. For example, in a use scenario, for a lifting amount of 2 millimeters, due to the intervention of the second power 3, the time required for lifting 2 millimeters can be doubled, and the lifting amount of the computer sewing machine can be doubled according to the same principle. In addition, in another use scenario, in the sewing process, when the needle is pulled up, the presser 42 can be pressed to the lowest point by the intervention of the second power 3 when the thread is collected, so as to press the fabric to the lowest point; when the thread is collected, the presser 42 is lifted together by the first power 2 and the second power 3, so as to accelerate the lifting speed of the presser 42, shorten the time, and effectively increase the thread collection amount, so as to strengthen the thread collection, make the stitch look better, and make the thread collection more beautiful.

[0051] In implementation, the second power 3 can preferentially adopt a servo motor, of course, in implementation, the second power 3 can also adopt a stepper motor and the like.

[0052] The computerized sewing machine provided in this embodiment also includes a first rotating shaft 26 rotatably mounted on the machine housing 1. The first rotating shaft 26 can be parallel to the main shaft 22, such as... Figures 1-3 As shown, the main shaft 22 is connected to one end of the first rotating shaft 26, and the other end of the first rotating shaft 26 is connected to the linkage mechanism 28, so that the main shaft 22 can drive the linkage mechanism 28 to move through the first rotating shaft 26. Meanwhile, the computerized sewing machine provided in this embodiment also includes a second rotating shaft 33 rotatably mounted on the machine housing 1. The second rotating shaft 33 can be parallel to the main shaft 22, such as... Figure 1 , Figure 3 and Figure 7 As shown, the second power 3 is connected to one end of the second rotating shaft 33, and the other end of the second rotating shaft 33 is connected to the linkage mechanism 28 or the presser foot rod 41. Not only can the presser foot rod 41 be driven by the second power 3, but the first power 2 and the second power 3 can also be set on the same side of the linkage mechanism 28, which makes it easier to arrange the first power 2, the second power 3 and the corresponding transmission mechanism in the machine housing 1, which is conducive to making the structure of the entire computer sewing machine more compact and small.

[0053] In implementation, the main shaft 22 can be connected to the linkage mechanism 28 using existing technology, as long as the main shaft 22 can drive the first rotating shaft 26 to rotate. As an example, it also includes an eccentric component 23, a transmission arm 24, and a swing arm 25, such as... Figure 1 As shown, one end of the transmission arm 24 is connected to the eccentric component 23, and the other end of the transmission arm 24 is rotatably connected (or hinged) to the swing arm 25. The swing arm 25 is fixedly connected to the first rotating shaft 26 and is perpendicular to the first rotating shaft 26. When the main shaft 22 rotates, the swing arm 25 can be driven to swing through the cooperation of the eccentric component 23 and the transmission arm 24, thereby achieving the purpose of driving the first rotating shaft 26 to rotate. In implementation, the eccentric component 23 can be an eccentric wheel or an eccentric sleeve, for example, such as... Figure 1 As shown, when the eccentric component 23 is an eccentric sleeve, the eccentric sleeve is fitted onto the main shaft 22 and rotates synchronously with the main shaft 22. The transmission arm 24 is fitted onto the eccentric sleeve, and the eccentric rotation of the eccentric sleeve drives the transmission arm 24.

[0054] In implementation, the second power source 3 can be connected to the second rotating shaft 33 via an existing transmission mechanism. This transmission mechanism can be one or more combinations of coupling 21, gear transmission mechanism, belt transmission mechanism, etc. For example, in this embodiment, such as... Figure 1 As shown, the second power source 3 can be connected to the second rotating shaft 33 through a gear transmission mechanism. The gear transmission mechanism includes a driving gear 31 connected to the second power source 3 and a driven gear 32 connected to the second rotating shaft 33. The driving gear 31 and the driven gear 32 mesh with each other. The gear transmission mechanism can not only play the role of transmission, but also the role of deceleration.

[0055] In practice, the linkage mechanism 28 has various implementations in the prior art. As an example, in this embodiment, the linkage mechanism 28 includes a swing member 27, a first transmission member 51, a second transmission member 52, a third transmission member 53, and an auxiliary member 54. The swing member 27 is fixedly connected to the first rotating shaft 26. In practice, the swing member 27 can be perpendicular to the first rotating shaft 26, allowing the main shaft 22 to drive the swing member 27 to swing via the first rotating shaft 26. One end of the first transmission member 51 is rotatably connected to the swing member 27, such as... Figures 2-4 As shown, the other end of the first transmission member 51 is rotatably connected to the second transmission member 52, the second transmission member 52 is rotatably connected to one end of the third transmission member 53, and the other end of the third transmission member 53 is rotatably connected to a connector 4. The connector 4 is fixedly connected to the pressure foot rod 41, as shown. Figures 2-4 As shown; the second transmission component 52 can preferably adopt an L-shaped structure, such as Figure 2 As shown; meanwhile, one end of the auxiliary component 54 is rotatably connected to the housing 1, as shown. Figure 2 and Figure 3 As shown, the auxiliary component 54 can rotate relative to the housing 1, and the other end of the auxiliary component 54 is rotatably connected to the second transmission component 52. For example, the auxiliary component 54 can be rotatably connected to the corner of the second transmission component 52, such as... Figure 2 and Figure 3 As shown, the auxiliary component 54 is located below the first transmission component 51. The first transmission component 51, the second transmission component 52, and the auxiliary component 54 can form a quadrilateral structure, as shown below. Figure 3 As shown, this facilitates more stable operation. In actual use, the first power 2 drives the swinging component 27 to swing. The swinging component 27 lifts the presser foot rod 41 upward or presses the presser foot rod 41 downward through the linkage mechanism 28, thereby achieving the purpose of lifting / pressing down the presser foot 42.

[0056] In this embodiment, existing technology can be used to achieve a rotatable connection between the two components. For example, a rotatable connection can be achieved through the engagement of a hinge hole 57 with a hinge shaft, pin, screw, bolt, or other hinge element 55. For instance, the second transmission component 52 is provided with a hinge hole 57, one end of the auxiliary component 54 is provided with a matching hinge hole 57, and the hinge element 55 passes through two hinge holes 57, thereby achieving a rotatable connection between the auxiliary component 54 and the second transmission component 52. Figure 2 and Figure 3 As shown, similarly, the first transmission member 51 can be rotatably connected to the swing member 27 via the hinge member 55, the second transmission member 52 can be rotatably connected to the first transmission member 51 via the hinge member 55, and the third transmission member 53 can be rotatably connected to the second transmission member 52 and the connector 4 via the hinge member 55 respectively.

[0057] To achieve a transmission connection between the second rotating shaft 33 and the linkage mechanism 28 or the presser foot rod 41 without interfering with the movement of the first rotating shaft 26, various implementation methods are available. As an example, it also includes a swing structure 34 and a limiting structure 56. The second power 3 is transmissionally connected to the swing structure 34 to drive the swing structure 34 to swing. In implementation, the swing structure 34 can be connected to the second rotating shaft 33, so that the second rotating shaft 33 can drive the swing structure 34 to swing under the drive of the second power 3. The limiting structure 56 is rotatably connected to the linkage mechanism 28 or the presser foot rod 41. For example, the limiting structure 56 can be rotatably connected to the first transmission member 51, the second transmission member 52, the third transmission member 53, the auxiliary member 54, and the hinge member 55 in the linkage mechanism 28. The limiting structure 56 can also be rotatably connected to the presser foot rod 41 or a component connected to the presser foot rod 41 (such as the connector 4). To facilitate assembly, the limiting structure 56 is constructed with a hinge hole 57 or a hinge shaft during implementation. During assembly, the limiting structure 56 can be hinged to the first transmission member 51, the second transmission member 52, the third transmission member 53, or the auxiliary member 54 through a hinge shaft that adapts to the hinge hole 57 or a hinge hole 57 that adapts to the hinge shaft. In another embodiment, the limiting structure 56 can be rotatably fitted onto the hinge 55 in the linkage mechanism 28 through the hinge hole 57, which simplifies the structure and makes it more compact. The hinge 55 can be a hinge between the first transmission member 51 and the second transmission member 52, a hinge between the second transmission member 52 and the third transmission member 53, a hinge between the third transmission member 53 and the connector 4, a hinge between the second transmission member 52 and the auxiliary member 54, etc. For example, in the preferred embodiment provided in this practice, the limiting structure 56 can be rotatably fitted onto the hinge 55 between the second transmission member 52 and the auxiliary member 54 in the linkage mechanism 28 through the hinge hole 57. Figure 5 , Figure 7 and Figure 8 As shown, the hinge 55 not only enables a rotatable connection between the second transmission member 52 and the auxiliary member 54, but also enables a rotatable connection between the limiting structure 56 and the linkage mechanism 28. As another example, the limiting structure 56 is rotatably connected to the auxiliary member 54, such as... Figure 6 As shown, the same effect can be achieved.

[0058] During assembly, the limiting structure 56 is movably constrained by the swing structure 34, such that the swing structure 34 and the limiting structure 56 form a sliding pair, as shown below. Figure 7 and Figure 8As shown, the swing structure 34 is arranged to drive the limiting structure 56 to lift or drop by swinging, so as to lift and press the whole linkage mechanism 28 and the presser bar 41; meanwhile, the swing structure 34 can move relative to the limiting structure 56 when the swing structure 34 swings, so that the swing structure 34 will not interfere with the limiting structure 56 during the swinging of the swing structure 34.

[0059] In order to make the swing structure 34 and the limiting structure 56 form a moving pair, there are various embodiments, for example, the swing structure 34 is configured with a guide portion adapted to the limiting structure 56, the limiting structure 56 is limited and constrained in the guide portion and can move along the guide portion. In an embodiment, the guide portion can be configured to adapt to the shape of the limiting structure 56; in implementation, the guide portion can be a slot 35 configured on the swing structure 34, as shown in Figure 7 The two ends of the slot 35 are closed, so that the limiting structure 56 will not come out of the slot 35; in assembly, the limiting structure 56 is limited and constrained in the slot 35, and the swing structure 34 forms a moving pair with the limiting structure 56 through the slot 35; in use, the swing structure 34 can drive the limiting structure 56 to lift or drop through the slot 35, or move relative to the limiting structure 56 through the slot 35; in implementation, the shape of the limiting structure 56 can preferentially adopt a square structure, as shown in Figure 7 and Figure 8 to adapt to the slot 35; of course, in implementation, the shape of the limiting structure 56 can also be configured as a cylindrical structure or an elliptical cylindrical structure or other special-shaped structures, etc. In implementation, the guide portion can also be a prong 36 configured on the swing structure 34, as shown in Figure 8 One end of the prong 36 is closed and the other end is open to assemble the limiting structure 56; in assembly, the limiting structure 56 is limited and constrained in the prong 36, and the swing structure 34 forms a moving pair with the limiting structure 56 through the prong 36; in use, the swing structure 34 can drive the limiting structure 56 to lift or drop through the prong 36, or move relative to the limiting structure 56 through the prong 36.

[0060] In another embodiment, the guide portion can also be a guide rod 37 of the swing structure 34, as shown in Figure 9 and Figure 10 Accordingly, the limiting structure 56 is configured with a guide hole 58 adapted to the guide rod 37, the guide hole 58 penetrates the side surface of the limiting structure 56, and the guide hole 58 is preferentially perpendicular to the hinge hole 57 configured on the limiting structure 56; in assembly, the limiting structure 56 is sleeved on the guide rod 37 through the guide hole 58, and the guide rod 37 forms a moving pair with the limiting structure 56; in use, the swing structure 34 can drive the limiting structure 56 to lift or drop through the guide rod 37, or move relative to the limiting structure 56 through the guide rod 37, so as to avoid interference.

[0061] In the implementation, the first transmission member 51 can preferentially adopt a rod-shaped structure or a plate-shaped structure, and the third transmission member 53 can also preferentially adopt a rod-shaped structure or a plate-shaped structure, and the auxiliary member 54 can also preferentially adopt a rod-shaped structure or a plate-shaped structure.

[0062] In the implementation, the swing structure 34 can be an integrally formed member, as shown in Figure 7 and Figure 8 which is beneficial to a more compact structure; or the swing structure 34 can be a combined member composed of at least two parts for assembly, which can be determined according to actual needs, and details are not described herein. In the implementation, the swing structure 34 can be directly connected to the second rotating shaft 33, as shown in the drawings, or can be connected to the second rotating shaft 33 by using an existing transmission mechanism, as long as the swing structure 34 can be driven to swing by the rotation of the second rotating shaft 33, and details are not described herein.

[0063] Of course, in a more perfect embodiment, the computerized sewing machine further comprises a rotating hook mechanism adapted to the needle, a guide groove adapted to the connecting head 4, etc. The rotating hook mechanism is arranged below the needle to cooperate with the needle to complete the sewing action together. The guide groove is arranged in the vertical direction to guide the lifting action of the connecting head 4, thereby facilitating the more efficient and stable action of the medium pressure rod.

[0064] The computerized sewing machine provided in the embodiment can be driven by the first power 2 to periodically lift and press the presser rod 41 through the connecting rod mechanism 28 under the control of the control module, at which time the swing structure 34 is in a follow-up state; the second power 3 can lift and press the entire connecting rod mechanism 28 and the presser rod 41 through the cooperation of the swing structure 34 and the limiting structure 56 under the control of the control module, at which time the connecting rod mechanism 28 is in a follow-up state; and in actual use, the second power 3 cooperates with the first power 2 to drive the presser rod 41 to change the lifting period of the presser rod 41 under the control of the control module, that is, the first power 2 and the second power 3 work together to achieve the purpose of more quickly and efficiently lifting the presser foot 42 and more quickly and efficiently pressing the presser foot 42.

[0065] Embodiment 2

[0066] The main difference between the embodiment 2 and the above-mentioned embodiment 1 is the connecting rod mechanism 28. Specifically, in the computerized sewing machine provided in the embodiment, the connecting rod mechanism 28 comprises a swing member 27 and a first transmission member 51, the swing member 27 is fixedly connected to the first rotating shaft 26, and one end of the first transmission member 51 is rotatably connected to the swing member 27, as shown in Figure 11As shown, the other end of the first transmission member 51 is rotatably connected to a connecting head 4, and the connecting head 4 is fixedly connected to the presser bar 41; in actual use, the first power 2 drives the swing member 27 in the connecting rod mechanism 28 to swing, and the swing member 27 drives the presser bar 41 to be lifted upward or pressed downward through the first transmission member 51, so as to achieve the purpose of lifting or pressing down the presser foot 42.

[0067] In the embodiment, the first transmission member 51 and the swing member 27 can be rotatably connected through the hinge member 55, which will not be described herein.

[0068] In the embodiment, the second rotating shaft 33 is connected with the swing structure 34, the connecting rod mechanism 28 or the presser bar 41 is connected with the limiting structure 56, and the swing structure 34 is in transmission connection with the limiting structure 56, so that the second power 3 can lift or press down the connecting rod mechanism 28 and the presser bar 41 as a whole through the swing structure 34 and the limiting structure 56. In implementation, the swing structure 34 and the limiting structure 56 can respectively adopt the structure and the matching structure in Embodiment 1, which will not be described herein. In specific implementation, the limiting structure 56 can be rotatably connected to the first transmission member 51 or the hinge member 55 in the connecting rod mechanism 28, or the limiting structure 56 can be rotatably connected to the presser bar 41 or a component (such as the connecting head 4) connected with the presser bar 41. As an example, the swing structure 34 is configured with a guide portion matched with the limiting structure 56, and the guide portion is a strip hole 35, the two ends of the strip hole 35 are closed, so that the limiting structure 56 cannot come out of the strip hole 35; the limiting structure 56 is configured with a hinge hole 57, and the limiting structure 56 can be rotatably sleeved on the hinge member 55 between the swing member 27 and the first transmission member 51 in the connecting rod mechanism 28, as shown in Figure 12 That is, the hinge member 55 can not only realize the rotatable connection between the swing member 27 and the first transmission member 51, but also realize the rotatable connection between the limiting structure 56 and the connecting rod mechanism 28, which is beneficial to simplify the structure and make the structure more compact; in assembly, the limiting structure 56 is limited and constrained in the strip hole 35, and the swing structure 34 and the limiting structure 56 form a moving pair through the strip hole 35; in use, the swing structure 34 can drive the limiting structure 56 to rise or fall through the strip hole 35, or the swing structure 34 can move relative to the limiting structure 56 through the strip hole 35, so that in the process that the first power 2 drives the connecting rod mechanism 28, the second power 3 can be controlled by the control module to lift or press down the entire connecting rod mechanism 28 and the presser bar 41, so as to achieve the purpose of changing the lifting and pressing speed of the presser foot 42 and more quickly and efficiently lifting and pressing the presser foot 42.

[0069] For example, as another example, the limiting structure 56 is rotatably connected to the swing member 27 or the first transmission member 51 in the connecting rod mechanism 28, as shown in Figure 13As shown, the swing structure 34 forms a sliding pair with the limiting structure 56 through the guide part. The swing structure 34 can lift or press down the entire linkage mechanism 28 and the presser foot rod 41 under the drive of the second power 3, and can also move relative to the limiting structure 56 to avoid interference. In use, the second power 3 can lift or press down the entire linkage mechanism 28 and the presser foot rod 41 under the control of the control module.

[0070] Example 3

[0071] The main difference between this embodiment 3 and the above-mentioned embodiments 1 or 2 lies in the different cooperation structure between the swing structure 34 and the limiting structure 56. Specifically, in the computer sewing machine provided in this embodiment, the limiting structure 56 is set on the linkage mechanism 28 or the presser foot bar 41. During assembly, the swing structure 34 and the limiting structure 56 form a limiting cooperation, as shown in the figure, so that the swing structure 34 can both move relative to the limiting structure 56 and rotate relative to the limiting structure 56. This not only allows the swing structure 34 to drive the presser foot bar 41 to move through the limiting part 59, but also allows the swing structure 34 to move relative to the limiting part 59, avoiding interference.

[0072] In practice, there are various implementation methods. For example, in one implementation, the limiting structure 56 includes a limiting part 59, the outer surface of which is cylindrical. Figure 14 As shown; correspondingly, the swing structure 34 is constructed with a guide portion adapted to the limiting portion 59. During assembly, the limiting portion 59 is inserted into the guide portion, and the limiting portion 59 and the guide portion form a sliding pair, as shown. Figure 14 As shown. In implementation, the limiting part 59 can preferably be constructed as a cylindrical or tubular structure, such as... Figure 14 As shown, the limiting structure 56 can be fixedly connected to the linkage mechanism 28 or the presser foot rod 41, which helps to simplify the structure and reduce costs.

[0073] In implementation, the guide portion can preferably be a slot 35 or a toothed fork 36. The limiting portion 59 in the limiting structure 56 is constrained within the slot 35 or the toothed fork 36. Moreover, during the swinging process of the swinging structure 34, the limiting structure 56 can move relative to the swinging structure 34 along the slot 35 or the toothed fork 36.

[0074] As an example, in this embodiment, when the limiting structure 56 is constructed on the auxiliary member 54 in the linkage mechanism 28, such as Figure 14 As shown, the limiting part 59 can be a cylinder provided on the side of the auxiliary member 54. Correspondingly, the swing structure 34 is constructed with a slot 35 adapted to the cylinder, and the limiting part 59 is inserted into the slot 35, as shown. Figure 14As shown, when the second power 3 drives the swing structure 34 to swing, the swing structure 34 can not only drive the linkage mechanism 28 to move synchronously, but also can rotate and move relative to the limiting structure 56, and no interference occurs.

[0075] For example, in an embodiment, the limiting structure 56 comprises a guide part, which can be a slot 35 or a fork 36, etc., for example, when the limiting structure 56 is configured in the auxiliary member 54 in the linkage mechanism 28, the guide part can be a slot 35 or a fork 36 configured in the auxiliary member 54, as shown in the figure. Figure 15 Correspondingly, the swing structure 34 is provided with a limiting part 59 matched with the guide part, and an outer side surface of the limiting part 59 is configured as a cylindrical structure, for example, the limiting part 59 can be configured as a cylinder, as shown in the figure. Figure 15 In assembly, the limiting part 59 is inserted into the guide part, so that the limiting part 59 and the guide part form a moving pair, and through cooperation between the limiting part 59 and the guide part, the swing structure 34 can drive the presser bar 41 to move through the limiting part 59, and the swing structure 34 can rotate and move relative to the limiting structure 56, and no interference occurs.

[0076] For example, in another embodiment, the limiting structure 56 comprises a guide part, which can be a slot 35 or a fork 36, etc., for example, when the limiting structure 56 is configured in the auxiliary member 54 in the linkage mechanism 28, the guide part can be a slot 35 or a fork 36 configured in the auxiliary member 54, as shown in the figure. Figure 16 Correspondingly, the swing structure 34 is provided with a limiting part 59 matched with the guide part, and in this embodiment, the limiting part 59 is rotatably arranged in the swing structure 34, that is, the limiting part 59 has a rotational degree of freedom relative to the swing structure 34, for example, the limiting part 59 can adopt a rod-shaped structure or a columnar structure, and the limiting part 59 can be rotatably connected to the swing structure 34 through a bearing or a hinge 55, as shown in the figure. Figure 16 In assembly, the limiting part 59 is inserted into the guide part, so that the limiting part 59 and the guide part form a moving pair, and through cooperation between the limiting part 59 and the guide part, the swing structure 34 can drive the presser bar 41 to move through the limiting part 59, and the swing structure 34 can rotate and move relative to the limiting structure 56, and no interference occurs. Figure 16 Correspondingly, the swing structure 34 is provided with a limiting part 59 matched with the guide part, and in this embodiment, the limiting part 59 is rotatably arranged in the swing structure 34, that is, the limiting part 59 has a rotational degree of freedom relative to the swing structure 34, for example, the limiting part 59 can adopt a rod-shaped structure or a columnar structure, and the limiting part 59 can be rotatably connected to the swing structure 34 through a bearing or a hinge 55, as shown in the figure.

[0077] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A computerized sewing machine, comprising a machine housing, a first power source, a main shaft, a linkage mechanism, a presser foot lever, and a control module, wherein the first power source is driveably connected to the main shaft, the main shaft is driveably connected to the linkage mechanism, the linkage mechanism is drively connected to the presser foot lever, the presser foot lever is vertically and flexibly mounted on the machine housing, and the control module is connected to the first power source, the first power source driving the presser foot lever to perform periodic lifting and lowering movements; characterized in that, It also includes a second power source, which is connected to a linkage mechanism or presser foot lever. The control module is connected to the second power source, which is used to work with the first power source under the control of the control module to drive the presser foot lever and change the lifting cycle of the presser foot lever.

2. The computerized sewing machine according to claim 1, characterized in that, It also includes a swing structure and a limiting structure. The second power source is connected to the swing structure for driving the swing structure to swing. The limiting structure is rotatably connected to the linkage mechanism or the pressure foot rod, and the limiting structure is movable and constrained by the swing structure.

3. The computerized sewing machine according to claim 2, characterized in that, The limiting structure has a hinge hole or hinge shaft, and the limiting structure is rotatably connected to the linkage mechanism or the presser foot rod through the hinge hole or hinge shaft; the swing structure has a guide part adapted to the limiting structure, the limiting structure is limited and constrained by the guide part, and can move along the guide part.

4. The computerized sewing machine according to claim 3, characterized in that, The limiting structure has a hinge hole, through which the limiting structure is rotatably fitted into the linkage mechanism.

5. The computerized sewing machine according to claim 1, characterized in that, It also includes a swing structure and a limiting structure. The second power source is connected to the swing structure for driving the swing structure to swing. The limiting structure is set in the linkage mechanism or the pressure foot rod. The swing structure and the limiting structure form a limiting fit, so that the swing structure can move relative to the limiting structure and can also rotate relative to the limiting structure.

6. The computerized sewing machine according to claim 5, characterized in that, The limiting structure includes a limiting part, the outer surface of which is cylindrical; the swing structure has a guide part adapted to the limiting part, the limiting part is inserted into the guide part, and the limiting part and the guide part form a sliding pair. Alternatively, the limiting structure includes a guide portion, the swing structure is provided with a limiting portion adapted to the guide portion, the outer surface of the limiting portion is constructed as a cylindrical structure, the limiting portion is inserted into the guide portion, and the limiting portion and the guide portion form a sliding pair; Alternatively, the limiting structure includes a guide portion, and the swing structure is provided with a limiting portion adapted to the guide portion. The limiting portion is rotatably disposed in the swing structure, and the limiting portion is inserted into the guide portion. The limiting portion and the guide portion form a sliding pair.

7. The computerized sewing machine according to claim 3 or 6, characterized in that, The guide portion is a slotted hole or a toothed fork.

8. The computerized sewing machine according to any one of claims 2-6, characterized in that, It also includes a first rotating shaft that is rotatably mounted on the housing, with the main shaft connected to one end of the first rotating shaft and the other end of the first rotating shaft connected to a linkage mechanism. It also includes a second rotating shaft that is rotatably mounted on the housing, a second power source that is connected to one end of the second rotating shaft, and the other end of the second rotating shaft that is connected to the swing structure.

9. The computerized sewing machine according to claim 8, characterized in that, The linkage mechanism includes a swing member, a first transmission member, a second transmission member, a third transmission member, and an auxiliary member. The swing member is fixedly connected to a first rotating shaft, and the main shaft drives the swing member to swing through the first rotating shaft. One end of the first transmission member is rotatably connected to the swing member, and the other end of the first transmission member is rotatably connected to the second transmission member. The second transmission member is rotatably connected to one end of the third transmission member, and the other end of the third transmission member is rotatably connected to a connector, which is fixedly connected to the pressure foot rod. One end of the auxiliary member is rotatably connected to the housing, and the other end of the auxiliary member is rotatably connected to the second transmission member.

10. The computerized sewing machine according to claim 1, characterized in that, It also includes a needle bar, which is vertically and heightably mounted on the machine housing. The main shaft is connected to the needle bar via a needle bar transmission mechanism to drive the needle bar to perform puncture actions. It also includes a presser foot, which is connected to the presser foot bar; The first power source uses a servo motor; the second power source uses a servo motor.

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