Noise reduction type quilting and embroidering machine head

Abstract

The utility model discloses a noise reduction type quilting and embroidering machine head which comprises a limiting assembly acting on a driving block and / or a noise reduction assembly acting on an adjustable presser foot, an auxiliary transmission mechanism comprises the driving block and a sliding seat, and the driving block is arranged on the sliding seat. The limiting assembly comprises a first limiting piece 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 correspondingly arranged; the noise reduction assembly comprises a connecting rod assembly and a buffering piece which correspond to each other. The double noise reduction mechanism formed by arranging the first limiting piece and the noise reduction assembly can effectively reduce noise generated in the movement process of the machine head, the probability of impact and collision generated in the working process of the machine head can also be reduced, and stability is improved. In addition, by arranging a first limiting piece, a second limiting piece and a third limiting piece, the selectable range of a user can be effectively widened, and the application range of the noise reduction type quilting and embroidering machine head is widened.

Description

Technical Field

[0001] This utility model relates to the field of quilting and embroidery equipment, specifically a noise-reducing quilting and embroidery machine head. Background Technology

[0002] Currently, needle bar movement is one of the main actions in the head of a computerized quilting and embroidery machine. During the needle bar movement, the drive block that drives the needle bar to move will constantly collide with the electromagnet that limits the movement of the drive block, and the adjustable presser foot set for the corresponding needle bar will constantly collide with the fixed frame that mounts the needle bar. When several machine heads in a row are used, the noise will continuously accumulate, which will result in serious noise pollution, and may even damage the electromagnet and the service life of the adjustable presser foot. Utility Model Content

[0003] The purpose of this invention is to provide a noise-reducing quilting machine head to solve one or more of the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model discloses a noise-reducing quilting machine head, including a transmission mechanism, a jumper assembly, and a machine housing. The transmission mechanism is connected to the jumper assembly. The machine housing is provided with a guide rod, and a sliding seat is sleeved on the guide rod. The sliding seat is provided with two driving blocks. The two driving blocks are symmetrically distributed about a straight line passing through the center point between the two driving blocks along the running direction of the sliding seat. Each driving block corresponds to a limiting component. The limiting component includes a first limiting member disposed on the sliding seat, and a stop is provided on the driving block corresponding to the first limiting member.

[0005] In some embodiments, the noise-reducing quilting machine head includes a needle bar assembly, the needle bar assembly includes an adjustable presser foot and a needle bar drive mechanism, the drive block is correspondingly disposed with respect to the needle bar drive mechanism, and the limiting assembly further includes a second limiting member disposed on the machine housing and / or a third limiting member disposed on the needle bar assembly.

[0006] In some embodiments, the first limiting member is a manual mechanical limiting component. The first limiting member includes a locking block and a fastening connector. The locking block is connected to the sliding seat through the fastening connector. The locking block is correspondingly set with the stop head. The sliding seat is provided with an auxiliary limiting member group corresponding to the locking block. The auxiliary limiting member group includes two auxiliary limiting blocks respectively set on both sides of the locking 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 locking block.

[0007] The second limiting element is an electromagnet;

[0008] The third limiting component is a manually retractable brake lever.

[0009] In some implementations...

[0010] Two first limiting members are disposed between two driving blocks on the same sliding seat. The two first limiting members use the same gasket. The fastening connector passes through the gasket, and the gasket is disposed between the locking block and the sliding seat.

[0011] The locking blocks in the two first limiting members on the same sliding seat share a set of auxiliary limiting members.

[0012] In some embodiments, the noise-reducing quilting machine head includes a noise-reducing component, which includes a linkage assembly connected to a transmission mechanism and a buffer member disposed on the upper part of the linkage assembly. The upper part of the adjustable presser foot is provided with a sliding sleeve corresponding to the needle bar drive mechanism, and a protrusion is provided on the sliding sleeve corresponding to the buffer member.

[0013] In some embodiments, the linkage assembly includes a three-hole linkage and a rocker arm. One end of the three-hole linkage is hinged to one end of an auxiliary linkage, and the other end of the auxiliary linkage is hinged to a sliding seat. One end of the three-hole linkage is hinged to the housing. The remaining end of the three-hole linkage is connected to a ball pin. The rocker arm is hinged to the housing to form a hinge point. A curved groove is provided on the rocker 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. A buffer is provided on the rocker arm on the other side of the hinge point corresponding to the protrusion.

[0014] The needle bar assembly includes a fixing frame connected to the machine housing, and the adjustable presser foot and needle bar drive mechanism are mounted on the fixing frame.

[0015] In some embodiments, the fixing frame is provided with an auxiliary plate, the auxiliary plate is provided with a track groove, the needle bar driving mechanism includes a needle bar and a driving slider, the upper and lower ends of the needle bar pass through the fixing frame, the top of the needle bar passes through the fixing frame and connects to the needle bar cap, a first spring is provided between the needle bar cap and the fixing frame, the driving slider is connected to the side of the needle bar near the driving block, the driving slider is set corresponding to the driving block, a sliding sleeve is sleeved on the needle bar, and a second spring is provided between the driving slider and the upper end of the sliding sleeve.

[0016] In some embodiments, the swing arm and the buffer are detachably connected.

[0017] In some embodiments, the buffer includes an auxiliary connecting rod connected to the swing arm and a buffer pad layer disposed on the auxiliary connecting rod, the buffer pad layer being disposed corresponding to the protrusion;

[0018] An auxiliary padding layer is provided on the fixing frame corresponding to the buffer component. The auxiliary padding layer is one or more of rubber, felt, and polyurethane.

[0019] In some embodiments, the transmission mechanism includes a cam connected to the transmission main shaft and a connecting rod hinged to the cam. The housing is provided with a frame, and the fixing frame is connected to the frame. The two ends of the guide rod are respectively connected to the upper and lower side panels of the frame, and one end of the connecting rod passes through the upper side panel of the frame and is hinged to the sliding seat.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: users can adjust the working state of each limiting component in the limiting assembly according to their own needs, thereby improving the protection of the limiting assembly and effectively expanding the application range of the noise-reducing quilting machine head. When the drive block needs to be controlled in a limited state for a long time, the first limiting component can be used to limit the corresponding drive block, avoiding frequent collisions between the drive block and other limiting components during the up-and-down reciprocating motion of the transmission mechanism, sliding seat, etc. This can effectively reduce the noise generated during use and also effectively ensure the service life of the limiting assembly. The noise-reducing quilting machine head also effectively avoids direct collisions between the sliding sleeve and the fixed frame through the added noise-reducing component, playing a role in anti-collision and noise reduction. The design of the noise-reducing quilting machine head can also effectively improve the stability of the machine head during operation, which can provide a guarantee for the output quality of equipment using the noise-reducing quilting machine head. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the noise-reducing quilting machine head in some embodiments of this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of a noise-reducing quilting machine head according to some embodiments of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of another depth noise reduction quilting machine head in some embodiments of this utility model;

[0024] Figure 4 This is a schematic diagram of the drive block frame from the main perspective in some embodiments of this utility model;

[0025] Figure 5 This is an assembly diagram of the back of the drive block frame in some real-time modes of this utility model;

[0026] Figure 6 This is an assembly diagram of the front of the needle bar holder in some embodiments of this utility model;

[0027] Figure 7 This is a schematic diagram of the assembly of the back of the needle bar holder in some embodiments of this utility model. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 7 The figure shows a preferred embodiment of the present invention, which discloses a noise-reducing quilting machine head, including a transmission mechanism, a jumper assembly, and a machine housing 8. The transmission mechanism is connected to the jumper assembly. A guide rod 12 is provided on the machine housing 8. A sliding seat 11 is sleeved on the guide rod 12. Two drive blocks 13 are provided on the sliding seat 11. A torsion spring is provided between the drive blocks 13 and the sliding seat 11. The two drive blocks 13 are symmetrically distributed about a straight line passing through the center point between the two drive blocks 13 along the running direction of the sliding seat. One drive block 13 corresponds to one limiting component. The limiting component includes an adjustable first limiting member provided on the sliding seat 11. The first limiting member slides with the sliding seat 11. A stop 35 is provided on the drive block 13 corresponding to the first limiting member.

[0030] A frame 9 can be installed on the housing 8, and the two ends of the guide rod 12 are connected to the upper side panel 901 and the lower side panel 902 of the frame 9, respectively.

[0031] The transmission mechanism can be implemented directly using existing technology or existing devices. For example, the transmission mechanism includes a transmission shaft 1, a driving gear 2 sleeved on the transmission shaft 1, a driven gear 3 meshing with the driving gear 2, a camshaft 4 connected to the driven gear 3, a cam 5 sleeved on the camshaft 4, and a connecting rod 10 hinged to the cam 5. One end of the connecting rod 10 passes through the upper side panel 901 and is hinged to the sliding seat 11. Two drive blocks 13 can be symmetrically distributed about the connecting rod 10, and two first limiting members can also be symmetrically distributed about the connecting rod 10. The aforementioned guide rod 12 can be configured as two rods, respectively located on both sides of the connecting rod 10.

[0032] The jumper assembly can be implemented directly using existing technology or existing devices. For example, the jumper assembly includes a jumper rod 7, a connector 6, etc. One end of the jumper rod 7 is hinged to a transmission mechanism (such as a cam 5 on the transmission mechanism), the middle part of the jumper rod 7 is hinged to one end of the connector 6, and the other end of the connector 6 is hinged to the housing 8. The transmission mechanism drives the jumper rod 7 to swing.

[0033] The first limiting component can be a manually operated mechanical limiting assembly, such as a locking block 24 and a fastening connector 25 (e.g., an internal hex bolt). The fastening connector 25 mounts the locking block 24 onto the sliding seat 11. The locking block 24 is correspondingly positioned with the stop head 35. The locking block 24 can be rotated and adjusted by turning the fastening connector 25. Under normal circumstances, the connection strength between the fastening connector 25 and the sliding seat 11 (i.e., the force required to turn the fastening connector 25) is greater than the torque of the torsion spring acting on the drive block 13. This first limiting component can also be other existing components that can achieve or release the driving block 13 from its limiting state through manual or automatic adjustment. Two first limiting components can be set between two drive blocks 13 on the same sliding seat. The two first limiting components can use the same shim 34. The fastening connector 25 passes through the shim 34, and the shim 34 is set between the locking block 24 and the sliding seat 11. The locking block 24 can be a small cam.

[0034] The noise-reducing quilting machine head includes a needle bar assembly. The needle bar assembly includes a fixed frame 14 corresponding to the frame 9, adjustable presser feet 15, and a needle bar drive mechanism. One adjustable presser foot 15 corresponds to one needle bar drive mechanism. The fixed frame 14 is connected to the frame 9 (e.g., using bolts / screws to form a detachable connection). The adjustable presser feet 15 and the needle bar drive mechanism are mounted on the fixed frame 14. Each needle bar drive mechanism corresponds to a drive block 13. An auxiliary plate 16 is provided on the fixed frame 14, and a track groove 17 is provided on the auxiliary plate 16. The needle bar drive mechanism includes a needle bar 18 and a drive slider 19. The upper and lower ends of the needle bar 18 pass through the fixed frame 14, and the top of the needle bar 18 protrudes from the fixed frame 14 and connects to a needle bar cap 20. A first spring 21 is provided between the needle bar cap 20 and the fixed frame 14. A drive slider 19 is connected to the side of the adjustable pressure foot 18 near the drive block 13. The drive slider 19 is correspondingly set to the drive block 13. A groove is provided on the drive block 13 corresponding to the drive slider 19 (the drive block 13 moves up and down together with the sliding seat 11. During the downward movement of the drive block 13, it can act on the drive slider 19, that is, the drive slider 19 can be locked into the groove, and drive the drive slider 19 and the needle bar 18 connected to the drive slider 19 to press down; during the upward movement of the drive block 13, it will flip and reset under the action of the torsion spring, and cause the drive slider 19 to disengage from the groove). A sliding sleeve 23 is provided on the upper part of the adjustable pressure foot 15 corresponding to the needle bar drive mechanism. The sliding sleeve 23 is sleeved on the needle bar 18. A second spring 22 is provided between the upper end of the drive slider 19 and the sliding sleeve 23. The other structures of the adjustable pressure foot 15 and the needle bar drive mechanism can be directly implemented by existing technology or by existing devices, so they will not be described in detail here.

[0035] In some specific implementations, one or more auxiliary limiting member groups can be provided on the sliding seat 11 corresponding to the first limiting member. Taking the setting of one auxiliary limiting member group as an example, the auxiliary limiting member group includes an upper auxiliary limiting block 36 and a lower auxiliary limiting block 37. The auxiliary limiting member group is set between two first limiting members on the same sliding seat 11. The two first limiting members can be symmetrically distributed about the auxiliary limiting member group. The auxiliary limiting member group can act on the two first limiting members on the sliding seat simultaneously. The locking 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 an auxiliary limiting role. In a specific implementation, the locking block 24 can rotate together with the fastening connector 25 (the specific connection method between the locking block 24 and the fastening connector 25 can be directly formed by using existing snap-fit ​​and other technologies, so it will not be described in detail here). When the first limiting member is working, tightening the fastening connector 25 causes the locking block 24 to rotate together with the fastening connector 25. During the rotation, the first protrusion on the locking block 24 first contacts the stop 35 on the driving block 13, and then drives the driving block 13 to rotate through the stop 35 until one side of the second protrusion on the locking 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 does not act on the driving slider 19 (i.e., the driving slider 19 will never be stuck in the groove of the driving block 13), thereby achieving the limiting state of the driving block 13. Tightening the fastening connector 25 in the opposite direction causes the locking block 24 to rotate in the opposite direction with the fastening connector 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, thereby achieving the purpose of releasing the limiting state of the driving block 13 (i.e., the driving block 13 can act on the driving slider 19).

[0036] The aforementioned limiting assembly may further include a second limiting member 26 disposed on the frame corresponding to the drive block 13 and / or a third limiting member 27 disposed on the fixed frame 14. Here, 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 threads or snap-fit. Taking a manually controlled retractable assembly connected by snap-fit ​​as an example, pressing down the brake lever achieves the limiting state of the drive block 13 at its lower part; lifting the brake lever causes its lower part to snap onto the fixed frame 14, thereby releasing the limiting state of the drive block 13. Both the second limiting member 26 and the third limiting member 27 can achieve the limiting state or release the limiting state of the drive block 13. When needed, the third limiting member 27 may also be an automatically retractable component such as an electromagnet.

[0037] When the drive block 13 needs to be in a limited position for an extended period (to prevent the drive block 13 from acting on the drive slider 19), the first limiting member can be used to limit the corresponding drive block 13, preventing the drive block 13 from frequently colliding with other limiting components during the up-and-down reciprocating motion of the transmission mechanism, sliding seat 11, etc. This effectively reduces noise generated during use and also ensures the service life of the limiting components. In other states, the second limiting member 26 and the third limiting member 27 can be used as needed to briefly limit the drive block 13 during the operation of the noise-reducing quilting machine head. Users can adjust the working state of each limiting member in the limiting assembly according to their own needs, improving the protection of the limiting components and effectively expanding the application range of the noise-reducing quilting machine head.

[0038] The noise reduction quilting machine head can also be equipped with a noise reduction component. The noise reduction component includes an auxiliary connecting seat 28, a three-hole connecting rod 29 and a swing arm 30, which are set at the bottom of the sliding seat 11. One end of the three-hole connecting rod 29 is hinged to one end of the auxiliary connecting rod 33, and the other end of the auxiliary connecting rod 33 is hinged to the auxiliary connecting seat 28. One end of the three-hole connecting rod 29 is hinged to the machine housing 8. The remaining end of the three-hole connecting rod 29 is connected to a ball pin. The swing arm 30 is hinged to the machine housing 8 to form a hinge point. A curved groove 31 is provided on the swing arm 30 on one side of the hinge point, corresponding to the ball pin. The ball pin is inserted into the curved groove 31 and can slide along the curved groove 31. A buffer 32 is provided on the swing arm 30 on the other side of the hinge point, and a protrusion 231 is provided on the sliding sleeve 23. The buffer 32 and the protrusion 231 are provided in a one-to-one correspondence. The buffer 32 described herein may include an auxiliary connecting rod connected to the swing arm 30 and a buffer pad layer disposed on the auxiliary connecting rod, the buffer pad layer being disposed corresponding to the protrusion 231. The buffer pad layer may directly wrap around the auxiliary connecting rod to form a cylindrical structure, or it may be other structures, as long as the auxiliary connecting rod has a buffer pad layer on the side near the protrusion 231. The material of the buffer pad layer may be an elastic material such as rubber, felt, or polyurethane. The noise reduction component works in conjunction with the sliding seat 11 controlled by the connecting rod 10. Specifically, as the sliding seat 11 descends, it drives the adjustable pressure foot 15 and the needle bar drive mechanism downwards via the action of the drive block 13 and the drive slider 19. During the descent, the sliding seat 11 drives the ball pin on the three-hole connecting rod 29 to run along the curved groove 31 until it reaches the top of the groove 31. Then, the three-hole connecting rod 29 drives the swing arm 30 to rotate clockwise around the hinge point, causing the end of the swing arm 30 equipped with the buffer 32 to move downwards. As the sliding seat 11 continues to descend, the protrusion 231 first impacts the buffer 32, and then the buffer 32 continues to move downwards with the descent of the sliding seat 11. The drive slider gradually presses the sliding sleeve against the buffer 32 via the second spring 22 until the sliding seat 11 reaches its lowest point. In some specific implementations, when the sliding seat 11 reaches its lowest point, there is a gap between the buffer 32 and the fixed frame 14.

[0039] In some specific implementations, the swing arm 30 and the buffer 32 are connected in a detachable manner (e.g., by means of snap-fit, threaded connection, etc., the auxiliary connecting rod in the buffer 32 is connected to the swing arm 30). This setting allows the buffer to be replaced separately when it is damaged and cannot work properly, reducing costs and ensuring the effectiveness of the noise reduction components.

[0040] In some specific implementations, an auxiliary padding layer can be provided on the fixing frame 14 corresponding to the buffer component. The auxiliary padding layer is one or more of rubber, felt, and polyurethane.

[0041] All of the above-mentioned undisclosed matters can be implemented using existing technologies, so they will not be elaborated here.

[0042] The aforementioned noise-reducing quilting and embroidery machine head structure design can also be applied to other quilting equipment, embroidery machines, and other similar machines.

[0043] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A noise-reducing quilting machine head, comprising a transmission mechanism, a jumper assembly, and a machine housing, wherein the transmission mechanism is connected to the jumper assembly, characterized in that, The housing is provided with a guide rod, and a sliding seat is sleeved on the guide rod. The sliding seat is provided with two driving blocks. The two driving blocks are symmetrically distributed about a straight line passing through the center point between the two driving blocks along the running direction of the sliding seat. Each driving block corresponds to a limiting component. The limiting component includes a first limiting member disposed on the sliding seat, and a stop is provided on the driving block corresponding to the first limiting member.

2. The noise-reducing quilting machine head according to claim 1, characterized in that: The noise-reducing quilting machine head includes a needle bar assembly, which includes an adjustable presser foot and a needle bar drive mechanism. The drive block is correspondingly arranged with the needle bar drive mechanism. The limiting assembly also includes a second limiting member disposed on the machine housing and / or a third limiting member disposed on the needle bar assembly.

3. The noise-reducing quilting machine head according to claim 2, characterized in that: The first limiting component is a manual mechanical limiting assembly. The first limiting component includes a locking block and a fastening connector. The locking block is connected to the sliding seat through the fastening connector. The locking block is correspondingly set with the stop head. The sliding seat is provided with an auxiliary limiting component group corresponding to the locking block. The auxiliary limiting component group includes two auxiliary limiting blocks respectively set on both sides of the locking 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 locking block. The second limiting element is an electromagnet; The third limiting component is a manually retractable brake lever.

4. The noise-reducing quilting machine head according to claim 3, characterized in that: Two first limiting members are disposed between two driving blocks on the same sliding seat. The two first limiting members use the same gasket. The fastening connector passes through the gasket, and the gasket is disposed between the locking block and the sliding seat. The locking blocks in the two first limiting members on the same sliding seat share a set of auxiliary limiting members.

5. The noise-reducing quilting machine head according to claim 2, characterized in that: The noise-reducing quilting machine head includes a noise-reducing component, which includes a connecting rod assembly connected to the transmission mechanism and a buffer component disposed on the upper part of the connecting rod assembly. The upper part of the adjustable presser foot is provided with a sliding sleeve corresponding to the needle bar drive mechanism, and a protrusion is provided on the sliding sleeve corresponding to the buffer component.

6. The noise-reducing quilting machine head according to claim 5, characterized in that: The linkage assembly includes a three-hole linkage and a swing arm. One end of the three-hole linkage is hinged to one end of an auxiliary linkage, and the other end of the auxiliary linkage is hinged to a sliding seat. One end of the three-hole linkage is hinged to the housing. The remaining end of the three-hole linkage is connected to a ball pin. The swing arm is hinged to the housing to form a hinge point. A curved groove is provided on the swing arm on one side of the hinge point corresponding to the ball pin, and the ball pin is inserted into the curved groove. A buffer is provided on the swing arm on the other side of the hinge point corresponding to the protrusion on the sliding sleeve. The needle bar assembly includes a fixing frame connected to the machine housing, and the adjustable presser foot and needle bar drive mechanism are mounted on the fixing frame.

7. The noise-reducing quilting machine head according to claim 6, characterized in that: The fixed frame is provided with an auxiliary plate, and the auxiliary plate is provided with a track groove. The needle bar driving mechanism includes a needle bar and a driving slider. The upper and lower ends of the needle bar pass through the fixed frame. 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. The driving slider is connected to the side of the needle bar near the driving block. The driving slider is set corresponding to 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 of the sliding sleeve.

8. The noise-reducing quilting machine head according to claim 6, characterized in that: The swing arm and the buffer are detachably connected.

9. The noise-reducing quilting machine head according to claim 6, characterized in that: The buffer includes an auxiliary connecting rod connected to the swing arm and a buffer pad layer disposed on the auxiliary connecting rod, with the buffer pad layer corresponding to the protrusion; An auxiliary padding layer is provided on the fixing frame corresponding to the buffer component. The auxiliary padding layer is one or more of rubber, felt, and polyurethane.

10. The noise-reducing quilting machine head according to claim 5, 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 housing, and a fixed frame is connected to the frame. The two ends of the guide rod are respectively connected to the upper and lower side panels of the frame. One end of the connecting rod passes through the upper side panel of the frame and is hinged to the sliding seat.

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