Machine head of silk thread sewing machine

Abstract

The utility model discloses a silk thread sewing machine head which comprises an adapter, a needle bar, a needle bar driving mechanism, a guide ring and a connecting rod swing assembly, the needle bar is arranged on the adapter in a penetrating mode, a machine needle is arranged at the bottom of the needle bar, and the needle bar driving mechanism is used for controlling the needle bar to move up and down. The guide ring is arranged on the adapter seat in a sleeving mode and can slide up and down, the connecting rod swing assembly is connected with the guide ring, a cycloid presser foot is arranged on the connecting rod swing assembly, and the connecting rod swing assembly can drive the cycloid presser foot to swing left and right on the machine needle when moving. According to the thread sewing machine head, the guide ring and the connecting rod swing assembly are ingeniously applied, the guide ring can achieve power transmission of swing driving and can also achieve the functions of turning, reversing and the like during thread swinging, the thread sewing machine head can achieve the rapid sewing effect that thread swinging and sewing are conducted at the same time, sewn threads are more uniform and firmer, and the sewing efficiency is improved. Cycloid can be performed according to a pattern set by the system.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing equipment, especially a silk thread sewing machine head. BACKGROUND

[0002] At present, with the improvement of people's living standards, the functional requirements of some automobile interior articles and furniture ornaments are also higher and higher, and common ones are automobile seat heating function, sofa cushion heating function and the like, these cushion with heating function need to sew the heating wire in the cushion, and the temperature of the cushion is increased by heating wire heating. When the heating wire is sewn on the cushion or cloth, sewing equipment needs to be used. The existing sewing mode adopts a semi-automatic mode, manual assistance is needed for thread arrangement, the sewing interval of manual assistance thread arrangement is relatively large, and the uniformity is not easy to control, resulting in poor sewing effect of the heating wire. SUMMARY

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims at providing a silk thread sewing machine head. The silk thread sewing machine head is used for sewing the heating wire.

[0004] The utility model discloses a silk thread sewing machine head, including adapter seat, needle bar, needle bar drive mechanism, guide ring, connecting rod swing assembly, the needle bar is worn in the adapter seat, the bottom of needle bar is equipped with needle, needle bar drive mechanism is used for controlling needle bar up and down motion, the guide ring is sleeved in the adapter seat, and can slide up and down, the connecting rod swing assembly is connected with the guide ring, the connecting rod swing assembly is provided with swing thread presser foot, the connecting rod swing assembly can drive swing thread presser foot swing left and right in the needle when moving. The bottom of adapter seat is equipped with sewing thread guide frame, both ends of sewing thread guide frame are equipped with guide sleeve respectively, and guide sleeve is used for guiding sewing thread.

[0005] As an improvement of the utility model discloses a silk thread sewing machine head, further including swing drive and rotary drive, the swing drive is used for controlling the up and down motion of guide ring, and the rotary drive is used for driving the rotation of adapter seat. The rotation of adapter seat can change the direction of silk thread, and the silk thread can be placed according to the pattern set by the system.

[0006] As an improvement of the utility model silk thread sewing machine head, the needle bar drive mechanism includes a swing block, a swing arm and a needle bar slide rail, the swing block is installed on the head main shaft, one end of the swing arm is movably connected to the swing block through a swing arm connecting piece, the other end of the swing arm is provided with a connecting sleeve, the connecting sleeve is sleeved on a connecting rod, one end of the connecting rod is provided with a sliding block, the sliding block is embedded on the needle bar slide rail, the other end of the connecting rod is connected to a needle bar collet, the needle bar collet is clamped on the needle bar, two needle bar lock blocks are also provided at intervals on the needle bar, and the needle bar collet is located between the two needle bar lock blocks.

[0007] As an improvement of the utility model silk thread sewing machine head, the needle bar drive mechanism further includes a main shaft pulley and a main shaft sleeve, the main shaft pulley and the main shaft sleeve are both sleeved on the head main shaft, the other end of the head main shaft is provided with a hand wheel, the main shaft pulley is connected to a driving pulley through a synchronous belt, and the driving pulley is controlled to rotate by a needle bar driving motor.

[0008] As an improvement of the utility model silk thread sewing machine head, the upper end of the needle bar is arranged in a needle bar sleeve, the needle bar sleeve is fixed on a sleeve fixing sheet, the sleeve fixing sheet is installed on a needle bar shield, the needle bar shield is fixed on a machine shell, a thread tensioning assembly is arranged on one side of the needle bar shield, a thread clamp and a bobbin are also arranged on the machine shell, the thread clamp corresponds to the thread tensioning assembly, a bobbin disc is arranged on the bobbin, and a bobbin screw rod is arranged in the middle of the bobbin disc.

[0009] As an improvement of the utility model silk thread sewing machine head, the rotary drive includes a winding motor base, a rotary control motor is arranged on the winding motor base, a first pulley is arranged on the output shaft of the rotary control motor, a rotary connecting sleeve is arranged at the upper end of the adapter seat, a second pulley is sleeved on the rotary connecting sleeve, the second pulley is connected with the first pulley through a synchronous belt, a sensor mounting seat is further arranged on the rotary connecting sleeve, and a sensor is arranged on the sensor mounting seat.

[0010] As an improvement of the utility model silk thread sewing machine head, one end of the winding motor base is provided with a cycloidal motor base, one side of the cycloidal motor base is provided with a sensor, and the rotary control motor stops working when the sensor generates an induction with the sensor.

[0011] As an improvement of the utility model sewing machine head, the swing drive includes a screw rod shaft motor, a screw rod nut is connected to the screw rod shaft motor, one end of the screw rod is connected to a screw rod reinforcing seat through a deep groove ball bearing, a cycloidal sensor seat is arranged on one side of the screw rod reinforcing seat, a cycloidal sensor is arranged on the cycloidal sensor seat, a magnet is arranged on the screw rod nut, and the magnet and the cycloidal sensor generate induction, and the screw rod shaft motor controls the screw rod to rotate reversely.

[0012] As an improvement of the utility model sewing machine head, a guide ring is arranged on the guide ring, a guide ring groove and a locking connecting part are arranged on the guide ring, a first pin hole and a first pressing plate for compressing the first pin hole are arranged on the locking connecting part, the upper end of the connecting rod swing assembly is connected to the first pin hole through a locking part, and the first pressing plate presses the locking part through a screw;

[0013] A swing connecting part is movably connected to the screw rod nut, the other end of the swing connecting part is provided with a semicircular connecting seat, guide rod seats are arranged at the two ends of the semicircular connecting seat, guide rods are arranged on the two guide rod seats, the guide rods are embedded in the guide ring groove, and the guide rods can slide in the guide ring groove;

[0014] A connecting part support seat is arranged at the bottom of the cycloidal motor seat, the swing connecting part is movably connected to the connecting part support seat through a pin, and the swing connecting part can swing with the connecting part support seat as a fulcrum.

[0015] As an improvement of the utility model sewing machine head, the connecting rod swing assembly includes a fixed connecting block and a swing connecting sleeve ring, the swing connecting sleeve ring is swingably connected to the adapter seat, the swing connecting sleeve ring is movably connected to the fixed connecting block, the fixed connecting block is fixedly connected to the guide ring, and the guide ring can drive the swing connecting sleeve ring to swing when the guide ring moves up and down;

[0016] One T-shaped connecting seat capable of swinging with the swing connecting sleeve ring is arranged on one side of the swing connecting sleeve ring, a cylinder seat is movably connected to the T-shaped connecting seat, a presser foot cylinder is arranged on the cylinder seat, a cylinder shaft of the presser foot cylinder is connected to a guide rail seat, and a cycloidal presser foot is arranged on the guide rail seat; a U-shaped wire guide is also arranged on the cylinder seat, wire guide sleeves are arranged at the two ends of the U-shaped wire guide, and the wire guide sleeves are used for guiding the thread to be sewn. The presser foot cylinder can press the cycloidal presser foot to a set height before the cycloidal presser foot swings.

[0017] Two symmetrical pin holes are arranged on the swing connecting sleeve ring, needle roller bearing pins are arranged in the two pin holes, the needle roller bearing pins are connected to the adapter seat, and the swing connecting sleeve ring can swing up and down with the needle roller bearing pins as the center fulcrum.

[0018] The swing connection ring is provided with a connecting groove at the position of the pin hole, the T-shaped connecting seat is installed in the connecting groove, and the T-shaped connecting seat swings left and right when the swing connection ring swings up and down.

[0019] The utility model discloses the beneficial effect lies in: the utility model disciously uses the guide ring and connecting rod swing subassembly, and the guide ring can realize the power transmission of swing drive, and can realize the functions such as turning and reversing when swing, and the silk thread sewing machine head can realize the quick sewing effect of swing thread and edge sewing, and the sewing line of sewing is more uniform and firm, can swing according to the pattern of system setting. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the perspective view of the utility model;

[0021] Figure 2 It is the internal structure diagram after removing the shell of the utility model;

[0022] Figure 3 It is the needle bar drive mechanism partial structure schematic view of the utility model;

[0023] Figure 4 It is the silk thread swing control partial structure schematic view of the utility model;

[0024] Figure 5 It is another direction structure schematic view of the silk thread swing control partial structure of the utility model;

[0025] Figure 6 It is the presser foot cylinder partial structure schematic view of the utility model;

[0026] Figure 7 It is the guide ring structure schematic view of the utility model;

[0027] The reference signs are: 1, adapter seat, 2, needle bar, 3, needle bar driving mechanism, 4, guide ring, 5, connecting rod swing assembly, 6, sewing needle, 7, swing presser foot, 8, sewing thread guide, 9, swing drive, 10, rotary drive, 11, machine housing, 12, thread tensioner, 13, bobbin, 14, bobbin disc, 15, bobbin screw, 81, guide sleeve, 21, needle bar lock block, 22, needle bar sleeve, 23, sleeve fixing plate, 24, needle bar shroud, 25, thread take-up assembly, 31, swing block, 32, swing arm, 33, needle bar slide rail, 34, machine head spindle, 35, swing arm connecting piece, 36, connecting sleeve, 37, connecting rod, 38, needle bar clamp sleeve, 39, spindle pulley, 30, spindle sleeve, 301, hand wheel, 101, winding motor base, 102, rotary control motor, 103, first pulley, 104, rotary connecting sleeve, 105, second pulley, 106, synchronous belt, 107, inductive sheet mounting base, 108, inductive sheet, 109, sensor, 91, swing motor base, 92, lead screw shaft motor, 93, lead screw, 94, lead screw nut, 95, lead screw reinforcing base, 96, swing inductive base, 97, swing sensor, 98, swing connecting piece, 99, semicircular connecting base, 90, guide rod, 901, connecting piece support base, 41, guide ring groove, 42, locking connecting part, 43, first pin hole, 44, first pressing plate, 45, planar block, 51, fixed connecting block, 52, swing connecting sleeve ring, 53, T-shaped connecting base, 54, cylinder base, 55, presser foot cylinder, 56, guide rail base, 57, U-shaped thread guide, 58, thread guide sleeve, 59, pin hole, 50, guide rail, 501, slide block. DETAILED DESCRIPTION

[0028] 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. 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 protection of the present application.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0031] As shown in Figures 1-7 A wire sewing machine head, including adapter seat 1, needle bar 2, needle bar drive mechanism 3, guide ring 4, connecting rod swing assembly 5, needle bar 2 is provided on adapter seat 1, the bottom of needle bar 2 is provided with needle 6, needle bar drive mechanism 3 is used for controlling needle bar 2 up and down movement, guide ring 4 is sleeved on adapter seat 1, and can slide up and down, connecting rod swing assembly 5 is connected with guide ring, connecting rod swing assembly 5 is provided with swing presser foot 7, connecting rod swing assembly 5 can drive swing presser foot 7 to swing left and right on needle 6. The bottom of adapter seat 1 is provided with sewing thread guide 8, the both ends of sewing thread guide 8 are respectively provided with guide sleeve 81, and the guide sleeve 81 is used for guiding sewing thread.

[0032] Preferably, it also includes swing drive 9 and rotary drive 10, swing drive 9 is used for controlling guide ring 4 up and down movement, guide ring 4 can only slide up and down and cannot rotate, rotary drive 10 is used for driving adapter seat 1 to rotate. Adapter seat 1 can rotate to change the direction of wire, and the wire can be placed according to the pattern set by the system.

[0033] Preferably, needle bar drive mechanism 3 includes swing block 31, swing arm 32 and needle bar slide rail 33, swing block 31 is installed on head spindle 34, one end of swing arm 32 is movably connected to swing block 31 through swing arm connecting piece 35, the other end of swing arm 32 is provided with connecting sleeve 36, connecting sleeve 36 is sleeved on connecting rod 37, one end of connecting rod 37 is provided with a sliding block, the sliding block is embedded in needle bar slide rail 33, the other end of connecting rod 37 is connected to needle bar clamp sleeve 38, needle bar clamp sleeve 38 clamps needle bar 2, needle bar 2 is also provided with two needle bar locking blocks 21 at intervals, needle bar clamp sleeve 38 is located between the two needle bar locking blocks 21.

[0034] Preferably, needle bar drive mechanism 3 further includes spindle pulley 39 and spindle sleeve 30, spindle pulley 39 and spindle sleeve 30 are both sleeved on head spindle 34, the other end of head spindle 34 is provided with hand wheel 301, spindle pulley 39 is connected to driving pulley (not shown) through synchronous belt, and driving pulley is controlled to rotate by needle bar drive motor (not shown).

[0035] The upper end of the needle rod 2 is arranged in a needle rod sleeve 22, the needle rod sleeve 22 is fixed on a sleeve fixing plate 23, the sleeve fixing plate 23 is installed on a needle rod shroud 24, the needle rod shroud 24 is fixed on the casing 11, one side of the needle rod shroud 24 is provided with a thread tensioning assembly 25, the casing 11 is further provided with a thread clamp 12 and a bobbin 13, the thread clamp 12 corresponds to the thread tensioning assembly 25, the bobbin 13 is provided with a bobbin disc 14, and the middle part of the bobbin disc 14 is provided with a bobbin screw 15.

[0036] Preferably, the rotating drive 10 comprises a winding motor base 101, the winding motor base 101 is provided with a rotating control motor 102, the output shaft of the rotating control motor 102 is provided with a first belt pulley 103, the upper end of the adapter base 1 is provided with a rotating connecting sleeve 104, the rotating connecting sleeve 104 is provided with a second belt pulley 105, the second belt pulley 105 is connected with the first belt pulley 103 through a synchronous belt 106, and the rotating connecting sleeve 104 is further provided with a sensing sheet mounting base 107, and the sensing sheet mounting base 107 is provided with a sensing sheet 108.

[0037] Preferably, one end of the winding motor base 101 is provided with a cycloidal motor base 91, one side of the cycloidal motor base 91 is provided with a sensor 109, and the sensor 109 stops working when the sensor 109 generates an induction with the sensing sheet 108.

[0038] Preferably, the swinging drive 9 comprises a lead screw shaft motor 92, the lead screw shaft motor 92 is connected with a lead screw nut 94 through a lead screw 93, the end of the lead screw 93 is connected to a lead screw reinforcing base 95 through a deep groove ball bearing, one side of the lead screw reinforcing base 95 is provided with a cycloidal induction base 96, the cycloidal induction base 96 is provided with a cycloidal sensor 97, the lead screw nut 94 is provided with a magnet, and the lead screw shaft motor 92 controls the lead screw 93 to rotate reversely when the magnet generates an induction with the cycloidal sensor 97.

[0039] Preferably, the guide ring 4 is provided with a guide ring groove 41 and a locking connecting part 42, the locking connecting part 42 is correspondingly provided with a first pin hole 43 and a first pressing plate 44 for compressing the first pin hole 43, the upper end of the connecting rod swinging assembly 5 is connected to the first pin hole 43 through a locking piece, and the first pressing plate 44 compresses the locking piece through a screw; the locking piece is a pin or a screw. The inner side wall of the guide ring groove 41 is provided with two corresponding plane blocks 45, the outer side of the adapter base 1 is provided with a cutting surface matched with the plane blocks 45, the plane blocks 45 can slide on the cutting surface, and the function that the guide ring can only slide up and down but cannot rotate is realized.

[0040] The nut 91 is movably connected with a swing connecting piece 98, and the other end of the swing connecting piece 98 is provided with a semicircular connecting seat 99, both ends of the semicircular connecting seat 99 are respectively provided with a guide rod seat, and guide rods 90 are arranged on the two guide rod seats and embedded in the guide annular groove 41 and can slide in the guide annular groove 41.

[0041] The bottom of the cycloid motor seat 91 is provided with a connecting piece support seat 901, the swing connecting piece 98 is movably connected with the connecting piece support seat 901 through a pin, and the swing connecting piece 98 can swing with the connecting piece support seat 901 as a fulcrum.

[0042] Preferably, the connecting rod swing assembly 5 comprises a fixed connecting block 51 and a swing connecting sleeve ring 52, the swing connecting sleeve ring 52 is swingably connected with the adapter seat 1, the swing connecting sleeve ring 52 is movably connected with the fixed connecting block 51, the fixed connecting block 51 is fixedly connected with the guide ring 4, and the guide ring 4 can drive the swing connecting sleeve ring 52 to swing when moving up and down.

[0043] One side of the swing connecting sleeve ring 52 is provided with a T-shaped connecting seat 53 capable of swinging with the swing connecting sleeve ring 52, the T-shaped connecting seat 53 is connected with a cylinder seat 54, the cylinder seat 54 is provided with a presser foot cylinder 55, a cylinder shaft of the presser foot cylinder 55 is connected with a guide rail seat 56, and the cam presser foot 7 is arranged on the guide rail seat 56; the guide rail seat 56 is also provided with a guide rail 50, the cylinder seat 54 is slidably connected with the guide rail 50 through a sliding block 501, and the cylinder seat 54 is also provided with a U-shaped wire guide 57, both ends of the U-shaped wire guide 57 are sleeved with wire guide sleeves 58, and the wire guide sleeves 58 are used for guiding the wire to be sewn. The presser foot cylinder 55 can press the cam presser foot 7 to a set height before the cam.

[0044] The swing connecting sleeve ring 52 is provided with two symmetrical pin holes 59, a needle bearing pin is arranged in each of the two pin holes 59, the needle bearing pins are connected with the adapter seat 1, and the swing connecting sleeve ring 52 can swing up and down with the needle bearing pins as a center fulcrum.

[0045] The swing connecting sleeve ring 52 is also provided with a connecting groove at the position of the pin hole, the T-shaped connecting seat 53 is installed in the connecting groove, and the T-shaped connecting seat 53 swings left and right when the swing connecting sleeve ring 52 swings up and down.

[0046] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and structures of the utility model, and the scope of the utility model is defined by the appended claims and their equivalent ranges.

Claims

1. A thread sewing machine head, characterized in that, The needle rod is provided with a needle on the bottom, the needle rod driving mechanism is used for controlling the up-down movement of the needle rod, the guide ring is sleeved on the adapter seat and can slide up and down, the connecting rod swing assembly is connected with the guide ring, the connecting rod swing assembly is provided with a swing cam presser, and the connecting rod swing assembly can drive the swing cam presser to swing left and right on the needle when the connecting rod swing assembly moves; The needle rod driving mechanism comprises a swing block, a swing arm and a needle rod sliding rail, the swing block is installed on the head main shaft, one end of the swing arm is movably connected to the swing block through a swing arm connecting piece, the other end of the swing arm is provided with a connecting sleeve, the connecting sleeve is sleeved on a connecting rod, one end of the connecting rod is provided with a sliding block, the sliding block is embedded on the needle rod sliding rail, the other end of the connecting rod is connected to a needle rod clamping sleeve, the needle rod clamping sleeve clamps the needle rod, and two needle rod locking blocks are further arranged on the needle rod at intervals.

2. The thread sewing machine head of claim 1, wherein, The swing driving and the rotation driving are further included, the swing driving is used for controlling the up-down movement of the guide ring, and the rotation driving is used for driving the adapter seat to rotate.

3. The thread sewing machine head of claim 1, wherein, The needle rod driving mechanism further comprises a main shaft pulley and a main shaft sleeve, the main shaft pulley and the main shaft sleeve are both sleeved on the head main shaft, the other end of the head main shaft is provided with a hand wheel, the main shaft pulley is connected to a driving pulley through a synchronous belt, and the driving pulley is controlled to rotate by a needle rod driving motor.

4. The thread sewing machine head of claim 1, wherein, The upper end of the needle rod is sleeved on a needle rod sleeve, the needle rod sleeve is fixed on a sleeve fixing sheet, the sleeve fixing sheet is installed on a needle rod shield, the needle rod shield is fixed on a machine shell, one side of the needle rod shield is provided with a thread lifting assembly, the machine shell is further provided with a thread clamp and a face thread reel, the thread clamp corresponds to the thread lifting assembly, the face thread reel is provided with a reel disc, and the middle part of the reel disc is provided with a reel screw.

5. The thread sewing machine head of claim 2, wherein, The rotation driving comprises a winding motor seat, the winding motor seat is provided with a rotation control motor, the output shaft of the rotation control motor is provided with a first pulley, the upper end of the adapter seat is provided with a rotation connecting sleeve, the rotation connecting sleeve is sleeved with a second pulley, the second pulley is connected with the first pulley through a synchronous belt, the rotation connecting sleeve is further provided with a sensing sheet mounting seat, and the sensing sheet mounting seat is provided with a sensing sheet.

6. The thread sewing machine head of claim 5, wherein, One end of the winding motor seat is provided with a swing cam motor seat, one side of the swing cam motor seat is provided with a sensor, and the sensor stops working when the sensor generates induction with the sensing sheet.

7. The thread sewing machine head of claim 6, wherein, The swing driving comprises a lead screw shaft motor, a lead screw nut is connected to the lead screw of the lead screw shaft motor, one end of the lead screw is connected to a lead screw reinforcing seat through a deep groove ball bearing, one side of the lead screw reinforcing seat is provided with a swing cam sensing seat, the swing cam sensing seat is provided with a swing cam sensor, a magnet is arranged on the lead screw nut, and the lead screw shaft motor controls the lead screw to rotate reversely when the magnet generates induction with the swing cam sensor.

8. The thread sewing machine head of claim 7, wherein, The guide ring is provided with a guide annular groove and a locking connecting part, the locking connecting part is correspondingly provided with a first pin hole and a first pressing plate for compressing the first pin hole, the upper end of the connecting rod oscillating assembly is connected to the first pin hole through a locking part, and the first pressing plate compresses the locking part through a screw; The screw rod nut is movably connected with an oscillating connecting part, the other end of the oscillating connecting part is provided with a semicircular connecting seat, the two ends of the semicircular connecting seat are respectively provided with guide rod seats, the two guide rod seats are both provided with guide rods, the guide rods are embedded in the guide annular groove, and the guide rods can slide in the guide annular groove; The bottom of the cycloidal motor seat is provided with a connecting part support seat, the oscillating connecting part is movably connected to the connecting part support seat through a pin, and the oscillating connecting part can oscillate around the connecting part support seat as a fulcrum.

9. The thread sewing machine head of claim 8, wherein, The connecting rod oscillating assembly comprises a fixed connecting block and an oscillating connecting sleeve ring, the oscillating connecting sleeve ring is oscillatably connected to the adapter seat, the oscillating connecting sleeve ring is movably connected with the fixed connecting block, the fixed connecting block is fixedly connected with the guide ring, and the guide ring can drive the oscillating connecting sleeve ring to oscillate when the guide ring moves up and down; One side of the oscillating connecting sleeve ring is provided with a T-shaped connecting seat capable of oscillating with the oscillating connecting sleeve ring, the T-shaped connecting seat is movably connected with a cylinder seat, the cylinder seat is provided with a presser foot cylinder, the cylinder shaft of the presser foot cylinder is connected to a guide rail seat, and the cycloidal presser foot is arranged on the guide rail seat; The oscillating connecting sleeve ring is provided with two symmetrically arranged pin holes, a needle roller bearing pin is arranged in each of the two pin holes, the needle roller bearing pin is connected to the adapter seat, and the oscillating connecting sleeve ring can oscillate up and down around the needle roller bearing pin as a center fulcrum. The position of the oscillating connecting sleeve ring in the pin hole is also provided with a connecting groove, the T-shaped connecting seat is mounted in the connecting groove, and the T-shaped connecting seat oscillates left and right when the oscillating connecting sleeve ring oscillates up and down. The position of the oscillating connecting sleeve ring in the pin hole is also provided with a connecting groove, the T-shaped connecting seat is mounted in the connecting groove, and the T-shaped connecting seat oscillates left and right when the oscillating connecting sleeve ring oscillates up and down.

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