Machine head of quilting embroidery machine and quilting embroidery machine

Abstract

The invention discloses a quilting and embroidering machine head and a quilting and embroidering machine, the quilting and embroidering machine comprises one or more quilting and embroidering machine heads, each quilting and embroidering machine head comprises a transmission mechanism, a thread jumping assembly, an auxiliary transmission mechanism, a needle bar assembly, a machine shell and a multi-noise reduction mechanism, each auxiliary transmission mechanism comprises a driving block and a sliding seat, the driving block is arranged on the sliding seat, and the needle bar assembly is arranged on the sliding seat. The multiple noise reduction mechanism comprises a limiting assembly acting on the driving block and / or a noise reduction assembly acting on the adjustable presser foot, the limiting assembly comprises a first limiting piece corresponding to the driving block and arranged on the sliding seat, a second limiting piece arranged on the machine shell and a third limiting piece arranged on the needle rod assembly, and the first limiting piece and the driving block are arranged correspondingly; the noise reduction assembly comprises a connecting rod assembly and a buffering piece which correspond to each other. Noise generated in the movement process of the machine head can be effectively reduced, the probability of impact and collision generated in the working process of the machine head is reduced, and the service life of the limiting assembly is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of quilting and embroidery equipment, and particularly to a quilting and embroidery machine head and a quilting and embroidery machine. Background Art

[0002] Currently, the movement of the needle bar is one of the main actions in the head of a computerized quilting and embroidery integrated machine. During the movement of the needle bar, there will be continuous impacts between the driving block that drives the needle bar and the electromagnet used to limit the movement of the driving block, as well as between the adjustable presser foot corresponding to the needle bar and the fixed frame on which the needle bar is installed, resulting in serious noise pollution and unable to ensure the service life of the electromagnet and the adjusting presser foot. Summary of the Invention

[0003] The purpose of the present invention is to provide a quilting and embroidery machine head to solve one or more of the problems raised in the above background art.

[0004] To achieve the above purpose,

[0005] On the one hand, the present invention discloses a quilting and embroidery machine head, including a transmission mechanism, a thread-jumping component, an auxiliary transmission mechanism, a needle bar component and a machine shell. The transmission mechanism is connected to the thread-jumping component and the auxiliary transmission mechanism. The auxiliary transmission mechanism is correspondingly arranged with the needle bar component. The auxiliary transmission mechanism includes a driving block, and the driving block is correspondingly arranged with the needle bar component. The needle bar component includes an adjustable presser foot and a needle bar driving mechanism.

[0006] The auxiliary transmission mechanism further includes a sliding seat and a guide rod connected to the machine shell. The sliding seat is sleeved on the guide rod and slides up and down along the guide rod. The driving block is arranged on the sliding seat. The quilting and embroidery machine head further includes a multi-layer noise reduction mechanism. The multi-layer noise reduction mechanism includes a limiting component acting on the driving block and / or a noise reduction component acting on the adjustable presser foot. A sliding sleeve is correspondingly arranged on the upper part of the adjustable presser foot for the needle bar driving mechanism.

[0007] The limiting component includes an adjustable first limiting member arranged on the sliding seat, and the first limiting member is correspondingly arranged with the driving block. The adjustment method of the first limiting member herein can be rotation.

[0008] The noise reduction component includes a connecting rod component connected to the transmission mechanism and a buffer member arranged on the upper part of the connecting rod component. A protrusion is correspondingly arranged on the sliding sleeve for the buffer member.

[0009] In some embodiments, the transmission mechanism includes a cam connected to the transmission main shaft and a connecting rod hinged to the cam. A frame is provided on the machine shell. The two side end parts of the guide rod are respectively connected to the upper side panel and the lower side panel of the frame. One side end part of the connecting rod passes through the upper side panel of the frame and is hinged to the sliding seat. Two driving blocks are arranged on the sliding seat, and each driving block is correspondingly provided with a limiting component.

[0010] In some embodiments, the needle bar assembly includes a fixing frame, which is connected to the frame. The adjustable presser foot and the needle bar driving mechanism are arranged on the fixing frame, and the adjustable presser foot and the needle bar driving mechanism are correspondingly arranged with the driving block.

[0011] In some embodiments, an auxiliary plate member is provided on the fixing frame, and a track groove is provided on the auxiliary plate member. The needle bar driving mechanism includes a needle bar and a driving slider. Both upper and lower end portions of the needle bar pass through the fixing frame. The top of the needle bar passes through the fixing frame and is connected to a needle bar cap. A first spring is provided between the needle bar cap and the fixing frame. A driving slider is connected to one side of the needle bar close to the driving block. The driving slider is correspondingly arranged with the driving block. A sliding sleeve is sleeved on the needle bar. A second spring is provided between the driving slider and the upper end portion of the sliding sleeve.

[0012] In some embodiments, the first limiting member is a manual mechanical limiting assembly. The first limiting member includes a clamping block and a fastening connecting member. The clamping block is connected to the sliding seat through the fastening connecting member. A stop head corresponding to the clamping block is provided on the driving block. An auxiliary limiting member group is correspondingly arranged on the sliding seat for the clamping block. The auxiliary limiting member group includes two auxiliary limiting blocks respectively arranged on both sides of the clamping block, namely an upper auxiliary limiting block and a lower auxiliary limiting block. Both auxiliary limiting blocks are used to limit the rotation angle of the clamping block.

[0013] In some embodiments, the limiting assembly further includes a second limiting member arranged on the machine shell and / or a third limiting member arranged on the needle bar assembly. Both the second limiting member and the third limiting member are correspondingly arranged with the driving block.

[0014] In some embodiments, the second limiting member is an electromagnet, and the third limiting member is a manually retractable braking stop rod.

[0015] In some embodiments, the connecting rod assembly includes a three-hole connecting rod and a swing arm. One end portion of one side of the three-hole connecting rod is hinged to one end portion of an auxiliary connecting rod. The other end portion of the auxiliary connecting rod is hinged to the sliding seat. One end portion of one side of the three-hole connecting rod is hinged to the machine shell. A ball pin is connected to the remaining end portion of the three-hole connecting rod on one side. The swing arm is hinged to the machine shell to form a hinge point. A curve groove is correspondingly arranged on the swing arm on one side of the hinge point for the ball pin. The ball pin is inserted into the curve groove and can slide along the curve groove. A buffer member is correspondingly arranged on the swing arm on the other side of the hinge point for the protrusion.

[0016] In some embodiments,

[0017] The swing arm and the buffer member are detachably connected. Through this setting, the buffer member can be replaced separately when it is damaged and cannot work normally;

[0018] The buffer member includes an auxiliary connecting rod connected to the swing arm and a buffer cushion layer provided on the auxiliary connecting rod, and the buffer cushion layer is arranged corresponding to the protrusion;

[0019] An auxiliary cushion layer is arranged on the fixing frame corresponding to the buffer member, and the auxiliary cushion layer is one or more of rubber, felt, polyurethane, etc.

[0020] On the other hand, the present invention discloses a quilting machine, which includes one or more of the above-mentioned quilting machine heads.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: multiple noise reduction treatments can be achieved, effectively reducing the noise pollution during the quilting process. In addition, through the structural design of the present invention, the auxiliary transmission mechanism, the needle bar assembly, the first limiting member, etc. can be effectively protected, ensuring their service life, and the quilting effect of the quilting machine capable of applying the quilting machine head can be improved. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a quilting machine head in some embodiments of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of a quilting machine head with a certain depth in some embodiments of the present invention;

[0024] Figure 3 It is a schematic cross-sectional view of a quilting machine head with another depth in some embodiments of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a driving block frame from the main perspective in some embodiments of the present invention;

[0026] Figure 5 It is an assembly schematic diagram of the back of the driving block frame in some real-time modes of the present invention;

[0027] Figure 6 It is an assembly schematic diagram of the front of the needle bar frame in some embodiments of the present invention;

[0028] Figure 7 It is an assembly schematic diagram of the back of the needle bar frame in some embodiments of the present invention. Specific Embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] Combined with Figures 1 to 7 As shown in the content, in this embodiment, a quilting machine head is described, which includes a transmission mechanism, a thread jumper assembly, an auxiliary transmission mechanism, a needle bar assembly, a machine housing 8 and a multi-stage noise reduction mechanism.

[0032] A frame 9 can be provided on the machine housing 8.

[0033] The transmission mechanism can be directly implemented by using the existing technology or directly adopting the existing device. For example, the transmission mechanism includes a main transmission shaft 1, a driving gear 2 sleeved on the main transmission shaft 1, a driven gear 3 meshed with the driving gear 2, a camshaft 4 connected to the driven gear 3, and a cam 5 sleeved on the camshaft 4.

[0034] The thread jumper assembly can be directly implemented by using the existing technology or directly adopting the existing device. For example, the thread jumper assembly includes a thread jumper rod 7, a connecting piece 6, etc. One end of the thread jumper rod 7 is hinged to the transmission mechanism (such as the cam 5 on the transmission mechanism), the middle of the thread jumper rod 7 is hinged to one end of the connecting piece 6, and the other end of the connecting piece 6 is hinged to the machine housing 8. The transmission mechanism drives the thread jumper rod 7 to swing.

[0035] The auxiliary transmission mechanism includes a connecting rod 10, a sliding seat 11, a guide rod 12 whose two side ends are respectively connected to the upper side panel 901 and the lower side panel 902 of the frame 9, and two driving blocks 13 arranged on the sliding seat 11. A torsion spring is provided between the driving block 13 and the sliding seat 11. One end of the connecting rod 10 is hinged to the transmission mechanism (such as the cam 5 on the transmission mechanism), and the other end of the connecting rod 10 passes through the upper side panel 901 and is hinged to the sliding seat 11. The sliding seat 11 is sleeved on the guide rod 12, and the sliding seat 11 can move up and down along the guide rod 12 under the action of the transmission mechanism and the connecting rod 10. Herein, the guide rod 12 can be set to two, which are respectively arranged on both sides of the connecting rod 10; two driving blocks 13 can be arranged on the sliding seat 11, and these two driving blocks 13 can be symmetrically distributed with respect to the connecting rod 10.

[0036] The needle bar assembly includes a fixing bracket 14 corresponding to the frame 9, an adjustable presser foot 15, and a needle bar driving mechanism. One adjustable presser foot 15 corresponds to one needle bar driving mechanism. The fixing bracket 14 is connected to the frame 9 (for example, detachably connected by bolts / screws). The adjustable presser foot 15 and the needle bar driving mechanism are arranged on the fixing bracket 14. The needle bar driving mechanism is arranged in one-to-one correspondence with the driving block 13. An auxiliary plate member 16 is provided on the fixing bracket 14, and a track groove 17 is provided on the auxiliary plate member 16. The needle bar driving mechanism includes a needle bar 18 and a driving slider 19. Both the upper and lower ends of the needle bar 18 pass through the fixing bracket 14. The top of the needle bar 18 passes through the fixing bracket 14 and is connected to a needle bar cap 20. A first spring 21 is provided between the needle bar cap 20 and the fixing bracket 14. A driving slider 19 is connected to one side of the needle bar 18 close to the driving block 13. The driving slider 19 is arranged corresponding to the driving block 13. A groove is provided on the driving block 13 corresponding to the driving slider 19 (the driving block 13 moves together with the sliding seat 11. During the downward movement of the driving block 13, it can act on the driving slider 19, snap the driving slider 19 into the groove, and drive the driving slider 19 and the needle bar 18 connected to the driving slider 19 to press down; during the upward movement of the driving block 13, it will flip and reset under the action of a torsion spring, and disengage the driving slider 19 from the groove). A sliding sleeve 23 is provided on the upper part of the adjustable presser foot 15 corresponding to the needle bar driving mechanism. The sliding sleeve 23 is sleeved on the needle bar 18. A second spring 22 is provided between the driving slider 19 and the upper end of the sliding sleeve 23. Other structures of the adjustable presser foot 15 and the needle bar driving mechanism can be directly realized by existing technologies or directly adopt existing devices, so they will not be elaborated here.

[0037] A multi-noise reduction mechanism, which includes a limiting component acting on the driving block and a noise reduction component acting on the adjustable presser foot. One sliding seat 11 corresponds to one noise reduction component, and one driving block 13 corresponds to one limiting component.

[0038] The limiting component includes a first limiting member. The first limiting member is arranged on the sliding seat 11 and slides with the sliding seat 11. The first limiting member can be a manual mechanical limiting component. For example, the first limiting member includes a clamping block 24 and a fastening connecting member 25 (such as an internal hexagonal bolt). A stop head 35 can be provided on the driving block 13 corresponding to the clamping block 24. The fastening connecting member 25 mounts the clamping block 24 on the sliding seat 11. By turning the fastening connecting member 25, the clamping block 2 can be rotated and adjusted. Usually, the connection strength between the fastening connecting member 25 and the sliding seat 11 (i.e., the force required to turn the fastening connecting member 25) is greater than the torsion force of the torsion spring acting on the driving block 13. A cushion layer can be added between the clamping block 24 and the sliding seat 11; the clamping block 24 can be a small cam.

[0039] In some specific implementations, one or more auxiliary limiter groups can be set on the sliding seat 11 corresponding to the first limiter. Taking the setting of an auxiliary limiter group as an example, the auxiliary limiter group includes an upper auxiliary limiter block 36 and a lower auxiliary limiter block 37. The auxiliary limiter group is set between the two first limiters on the same sliding seat 11. The auxiliary limiter group can act on the two first limiters on the sliding seat at the same time, and the two first limiters can be symmetrically distributed about the auxiliary limiter group. The clamping block 24 is provided with two protrusions, namely a first protrusion and a second protrusion set away from the driving block 13. The first protrusion is used to act on the driving block 13, and the second protrusion is used to play the role of auxiliary limiter. In the specific implementation, the clamping block 24 can rotate together with the fastening connector 25 (the specific connection method between the clamping block 24 and the fastening connector 25 can be directly connected using existing clamping and other technologies, so it will not be repeated here). When the first limiting member is working, the fastening connecting member 25 is screwed, and the clamping block 24 rotates together with the fastening connecting member 25. During the rotation process, the first protrusion on the clamping block 24 first contacts the stopper 35 on the driving block 13, and then drives the driving block 13 to rotate through the stopper 35 until one side of the second protrusion on the clamping block 24 contacts the upper auxiliary limiting block 36. At this time, the driving slider 19 is disengaged from the groove of the driving block 13 and continues to not act on the driving slider 19 (that is, the driving slider 19 will not be stuck in the groove of the driving block 13), thereby realizing the limiting state of the driving block 13; the fastening connecting member 25 is screwed in the opposite direction, and the clamping block 24 rotates in the opposite direction together with the fastening connecting member 25, the contact between the second protrusion and the upper auxiliary limiting block 36 is released, and the contact between the first protrusion and the driving block 13 is released, until one side of the first protrusion contacts the lower auxiliary limiting block 37, so that the purpose of releasing the limiting state of the driving block 13 (that is, the driving block 13 can act on the driving slider 19) can be achieved.

[0040] The limiting assembly may also include a second limiting member 26 provided on the frame corresponding to the driving block 13 and / or a third limiting member 27 provided on the fixing frame 14. The second limiting member 26 may be an electromagnet; the third limiting member 27 may be a manually retractable brake lever, such as a manually controlled retractable assembly connected by a thread or a clamping connection. Taking the manually controlled retractable assembly of the clamping connection as an example, by pressing down the brake lever, the lower part of the brake lever can achieve the purpose of adjusting the driving block 13 to enter the limiting state; by lifting the brake lever, the lower part of the brake lever is clamped to the fixing frame 14, and the purpose of achieving the limiting state of the driving block 13 by the brake lever can be released. The limiting state of the driving block 13 or the purpose of releasing the limiting state of the driving block 13 can be achieved by the second limiting member 26 and the third limiting member 27. The brake lever may be an automatic retractable member such as an electromagnet.

[0041] Compared with the second limiting member 26 and the third limiting member 27, the first limiting member is suitable for controlling the driving block 13 to be in a limiting state for a long time (for the purpose of preventing the driving block 13 from acting on the driving slider 19). The first limiting member slides with the sliding seat 11, avoiding the continuous collision between the driving block and the first limiting member during the operation of the driving block, which can not only effectively reduce the noise generated during use, but also effectively ensure the service life of the limiting component. In addition, the comprehensive design of the second limiting member 26, the third limiting member 27 and the first limiting member is beneficial for users to adjust the working state of each limiting member in the limiting component according to their own needs, improving the protection of the limiting component.

[0042] The noise reduction component may include an auxiliary connecting seat 28, a three-hole connecting rod 29 and a swing arm 30 arranged at the bottom of the sliding seat 11. One end of one side of the three-hole connecting rod 29 is hinged to one end of one side of the auxiliary connecting rod 33. The other end of the auxiliary connecting rod 33 is hinged to the auxiliary connecting seat 28. One end of one side of the three-hole connecting rod 29 is hinged to the machine housing 8. A ball pin is connected to the remaining end of the three-hole connecting rod 29 on one side. The swing arm 30 is hinged to the machine housing 8 to form a hinge point. A curve groove 31 is arranged on the swing arm 30 on one side of the hinge point corresponding to the ball pin. The ball pin is inserted into the curve groove 31 and can slide along the curve groove 31. A buffer member 32 is arranged on the swing arm 30 on the other side of the hinge point. A protrusion 231 is arranged on the sliding sleeve 23. The buffer members 32 and the protrusions 231 are arranged in one-to-one correspondence. The buffer member 32 described here may include an auxiliary connecting rod connected to the swing arm 30 and a buffer cushion layer arranged on the auxiliary connecting rod. The buffer cushion layer is arranged corresponding to the protrusion 231. The buffer cushion layer can directly wrap the auxiliary connecting rod to form a cylindrical structure or can be other structures, as long as there is a buffer cushion layer on the side of the auxiliary connecting rod close to the protrusion 231. The material of the buffer cushion layer can be elastic materials such as rubber, felt, polyurethane, etc. The noise reduction component works together with the sliding seat 11 controlled by the connecting rod 10. The specific working principle is as follows: when the sliding seat 11 descends, it can drive the adjustable presser foot 15 and the needle bar driving mechanism to move downward together through the driving block 13 and the driving slider 19. During the descending process of the sliding seat 11, the ball pin on the three-hole connecting rod 29 will be driven to run along the curve groove 31 through the three-hole connecting rod 29 until it runs to the top of the curve groove 31. Then the three-hole connecting rod 29 will drive the swing arm 30 to rotate clockwise around the hinge point through the ball pin, so that one end of the swing arm 30 where the buffer member 32 is installed moves downward. During the continuous descending process of the sliding seat 11, the protrusion 231 will first hit the buffer member 32, and then the buffer member 32 will continue to move downward with the descending of the sliding seat 11. The driving slider presses the sliding sleeve gradually against the buffer member 32 through the second spring 22 until the sliding seat 11 descends to the lowest point. In some specific implementation manners, when the sliding seat 11 descends to the lowest point, there is a gap between the buffer member 32 and the fixed frame 14.

[0043] In some specific implementation manners, a detachable connection is adopted between the swing arm 30 and the buffer member 32 (for example: the auxiliary connecting rod in the buffer member 32 is connected to the swing arm 30 by means of snap connection, threaded connection, etc.). Through this setting, when the buffer member is damaged and cannot work properly, it can be replaced separately, reducing costs and ensuring the effect of the noise reduction component.

[0044] In some specific implementation manners, an auxiliary cushion layer can be correspondingly arranged on the fixing frame 14 for the buffer member, and the auxiliary cushion layer is one or more of rubber, felt, polyurethane, etc.

[0045] Embodiment 2

[0046] In this embodiment, a quilting machine head is described, which includes a transmission mechanism, a thread jumping component, an auxiliary transmission mechanism, a needle bar component, a machine shell 8 and a multiple noise reduction mechanism. The multiple noise reduction mechanism only includes a limiting component acting on the driving block. The specific structures of the transmission mechanism, the thread jumping component, the auxiliary transmission mechanism, the needle bar component, the machine shell 8 and the limiting component can directly adopt the corresponding structures in Embodiment 1, so they will not be elaborated here.

[0047] Embodiment 3

[0048] In this embodiment, a quilting machine head is described, which includes a transmission mechanism, a thread jumping component, an auxiliary transmission mechanism, a needle bar component, a machine shell 8 and a multiple noise reduction mechanism. The multiple noise reduction mechanism only includes a noise reduction component acting on the adjustable presser foot. The specific structures of the transmission mechanism, the thread jumping component, the auxiliary transmission mechanism, the needle bar component, the machine shell 8 and the noise reduction component can directly adopt the corresponding structures in Embodiment 1, so they will not be elaborated here.

[0049] The quilting machine head described in any one of Embodiments 1 to 3 can be applied to an existing quilting machine to form a new quilting machine.

[0050] The above undisclosed matters can all be realized by existing technologies, so they will not be elaborated here.

[0051] The structural design of the above quilting machine head can also be applied to other quilting equipment, embroidery machines, embroidery machines, etc.

[0052] Finally, it should be noted that: in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0053] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above content is a further detailed description of the present invention in combination with specific embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the art to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as falling within the protection scope determined by the claims submitted for the present invention.

Claims

1. A quilting embroidery machine head, comprising a transmission mechanism, a jumper assembly, an auxiliary transmission mechanism, a needle bar assembly and a housing, wherein the transmission mechanism is connected to the jumper assembly and the auxiliary transmission mechanism, the auxiliary transmission mechanism is arranged correspondingly to the needle bar assembly, the auxiliary transmission mechanism comprises a drive block, the drive block is arranged correspondingly to the needle bar assembly, the needle bar assembly comprises an adjustable presser foot and a needle bar drive mechanism, characterized in that: The auxiliary transmission mechanism also includes a sliding seat and a guide rod connected to the housing, the sliding seat is sleeved on the guide rod and slides up and down along the guide rod, the driving block is arranged on the sliding seat, and the quilting embroidery machine head also includes a multiple noise reduction mechanism, the multiple noise reduction mechanism includes a limit assembly acting on the driving block and / or a noise reduction assembly acting on the adjustable presser foot, and the upper part of the adjustable presser foot is provided with a sliding sleeve corresponding to the needle bar driving mechanism, The limiting assembly comprises an adjustable first limiting member arranged on the sliding seat, and the first limiting member is arranged corresponding to the driving block; The noise reduction component comprises a connecting rod component connected to the transmission mechanism, a buffer component arranged on the upper part of the connecting rod component, and a protrusion is arranged on the sliding sleeve corresponding to the buffer component.

2. The quilting embroidery machine head according to claim 1, characterized in that: The transmission mechanism includes a cam connected to the transmission main shaft and a connecting rod hinged to the cam. A frame is provided on the casing. The two side ends of the guide rod are respectively connected to the upper side panel and the lower side panel of the frame. One side end of the connecting rod passes through the upper side panel of the frame and is hinged to the sliding seat. Two driving blocks are provided on the sliding seat, and a limiting component is correspondingly arranged for each driving block.

3. The quilting embroidery machine head according to claim 2, characterized in that: The needle bar assembly comprises a fixing frame connected to the frame, the adjustable presser foot and the needle bar driving mechanism are arranged on the fixing frame, and the adjustable presser foot and the needle bar driving mechanism are arranged corresponding to the driving block.

4. The quilting embroidery machine head according to claim 3, characterized in that: An auxiliary plate is provided on the fixed frame, and a track groove is provided on the auxiliary plate. The needle bar driving mechanism includes a needle bar and a driving slider. The upper and lower end portions of the needle bar both pass through the fixed frame, and the top of the needle bar passes through the fixed frame and is connected to the needle bar cap. A first spring is provided between the needle bar cap and the fixed frame, and a driving slider is connected to the side of the needle bar close to the driving block. The driving slider is arranged corresponding to the driving block, and a sleeve is sleeved on the needle bar, and a second spring is provided between the driving slider and the upper end of the sleeve.

5. The quilting embroidery machine head according to claim 1, characterized in that: The first limit member is a manual mechanical limit component, which includes a clamping block and a fastening connection member, the clamping block is connected to the sliding seat through the fastening connection member, the driving block is provided with a stopper corresponding to the clamping block, and the sliding seat is provided with an auxiliary limit member group corresponding to the clamping block, the auxiliary limit member group includes two auxiliary limit blocks respectively arranged on both sides of the clamping block, namely an upper auxiliary limit block and a lower auxiliary limit block, and the two auxiliary limit blocks are used to limit the rotation angle of the clamping block.

6. The quilting embroidery machine head according to claim 1, characterized in that: The limiting assembly further comprises a second limiting member arranged on the housing and / or a third limiting member arranged on the needle bar assembly, and the second limiting member and the third limiting member are both arranged corresponding to the driving block.

7. The quilting embroidery machine head according to claim 1, characterized in that: The second limiting member is an electromagnet, and the third limiting member is a manually retractable brake lever.

8. The quilting embroidery machine head according to claim 1, characterized in that: The connecting rod assembly includes a three-hole connecting rod and a swing arm, one end of the three-hole connecting rod is hinged to one end of an auxiliary connecting rod, the other end of the auxiliary connecting rod is hinged to a sliding seat, one end of the three-hole connecting rod is hinged to the casing, the remaining end of the three-hole connecting rod is connected to a ball pin, the swing arm is hinged to the casing to form a hinge point, a curved groove is set on the swing arm on one side of the hinge point corresponding to the ball pin, the ball pin is inserted into the curved groove and can slide along the curved groove, and a buffer is set on the swing arm on the other side of the hinge point corresponding to the protrusion on the sliding sleeve.

9. The quilting embroidery machine head according to claim 8, characterized in that: The swing arm and the buffer member are detachably connected; The buffer member includes an auxiliary connecting rod connected to the swing arm, and a buffer pad layer arranged on the auxiliary connecting rod, and the buffer pad layer is arranged corresponding to the protrusion; An auxiliary cushion layer is arranged on the fixing frame corresponding to the buffer component, and the auxiliary cushion layer is one or more of rubber, felt and polyurethane.

10. Quilting embroidery machine, characterized by: The invention comprises one or more quilting and embroidery machine heads as described in any one of claims 1 to 9.

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