Cylinder type flat seaming machine

Abstract

The invention belongs to the technical field of sewing machines, and particularly relates to a cylinder type flat seaming machine. The cloth feeding mechanism comprises a main cloth feeding shaft, a differential tooth frame, a cloth feeding tooth frame, a differential tooth and a cloth feeding tooth, the main shaft, the differential tooth frame and the cloth feeding tooth frame are arranged in the base, the differential tooth and the cloth feeding tooth are located in the cylinder type sewing head, a first sliding groove is formed in one end of the differential tooth frame and one end of the cloth feeding tooth frame, a first eccentric section is arranged at one end of the main shaft, and a second sliding groove is formed in the other end of the main shaft. The first eccentric section is connected with the first sliding groove through a first sliding block, the feed dog frame is connected with the crank section of the main feed shaft through a main feed connecting rod, a guide sliding frame is arranged on the differential feed dog frame, one end of a rocker sliding block is arranged on the guide sliding frame in a sliding mode, and the other end of the rocker sliding block penetrates through a guide hole in one end of a rocker to be connected with one end of a differential connecting rod. The other end of the rocker is connected with a main cloth feeding shaft, and the other end of the differential connecting rod is connected with a differential wrench shaft through a difference adjusting crank; the differential feed dog frame and the feed dog frame are arranged in the base, an oil supply system of the main shaft in the base can be used, and abrasion is not prone to occurring.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machines, in particular to a cylinder-type interlock sewing machine. Background Art

[0002] The feed tooth frame and differential tooth frame of the traditional cylinder-type interlock sewing machine (small-mouth interlock sewing machine, small square-head interlock sewing machine) are installed in the small-mouth seam head or small square-head seam head. Since this part is a certain distance away from the oil supply system inside the base, the lubrication of the feed tooth frame and differential tooth frame is carried out through the oil supply line. In addition, during the sewing process, impurities such as thread hair are easily attached to the tooth frame, causing the feed tooth frame and differential tooth frame to be easily worn. At present, similar products on the market have tooth frame wear after about 3-8 months, which seriously affects the quality of the whole machine. Summary of the invention

[0003] The object of the present invention is to provide a cylinder-type interlock sewing machine in which a cloth feeding tooth frame and a differential tooth frame are installed in a base so as to realize oil supply by an oil supply system in the base to improve the lubrication effect.

[0004] The present invention is achieved in that: A cylinder-type interlock sewing machine comprises a cloth feeding mechanism and a main shaft. The cloth feeding mechanism comprises a main cloth feeding shaft, a differential tooth frame, a cloth feeding tooth frame, and differential teeth and cloth feeding teeth respectively arranged on the differential tooth frame and the cloth feeding tooth frame. The main shaft, the main cloth feeding shaft, the differential tooth frame, and the cloth feeding tooth frame are arranged in a base. The differential teeth and the cloth feeding teeth are located in a cylinder-type sewing head. A first slide groove is arranged at one end of the differential tooth frame and the cloth feeding tooth frame. A first eccentric section is arranged at one end of the main shaft. The first eccentric section is connected to the first slide groove through a first slider. The cloth feeding tooth frame is connected to the crank section of the main cloth feeding shaft through a main feeding connecting rod. A guide slide is arranged on the differential tooth frame. One end of the rocker slider is slidably arranged on the guide slide, and the other end passes through a guide hole at one end of the rocker and is connected to one end of the differential connecting rod. The other end of the rocker is connected to the main cloth feeding shaft, and the other end of the differential connecting rod is connected to the differential wrench shaft through a differential adjustment crank.

[0005] In the above-mentioned cylinder-type interlock sewing machine, a differential adjuster is arranged on the differential wrench shaft, and the differential adjuster includes a first adjusting rod installed on one end of the differential wrench shaft through a fastener and an adjusting plate installed on the base, and a first adjusting hole with the axis of the differential wrench shaft as the center and a second adjusting hole arranged in the up and down direction are arranged on the adjusting plate, an adjusting stud is threaded on the first adjusting rod, and a differential adjusting screw is arranged on the adjusting stud, one end of the differential adjusting screw extends into the second adjusting hole and is pressed on the first adjusting rod, and the adjusting knob passes through the first adjusting hole and is threadedly connected to the first adjusting rod, and a torsion spring is mounted on the fastener, one arm of the torsion spring is connected to the base, and the other arm is connected to the adjusting plate, and the rotation angle of the adjusting plate is adjusted by adjusting the stud and the knob to drive the differential wrench shaft to rotate to adjust the differential amount.

[0006] In the above-mentioned cylinder-type interlock sewing machine, the crank section of the main cloth feed shaft is provided with an arc-shaped hole, and the main cloth feed connecting rod is connected to the arc-shaped hole.

[0007] In the above-mentioned cylinder-type interlock sewing machine, it also includes a stitch length adjustment mechanism, which includes a cloth feed control frame, a cloth feed connecting rod, a short connecting rod and a feed connecting rod. The first arm and the second arm of the cloth feed control frame are arranged on the base through a pin shaft. One end of the cloth feed connecting rod is located between the two arms of the cloth feed control frame and is provided with a first connecting rod pin. One end of the short connecting rod is connected to the first connecting rod pin, and the other end is connected to the first arm of the cloth feed control frame through the second connecting rod pin. One end of the feed connecting rod is connected to the first connecting rod pin, and the other end is connected to the cloth feed spindle through a cloth feed crank.

[0008] In the above-mentioned cylinder-type interlock sewing machine, it also includes a needle guard frame shaft, a lower bending needle shaft, a lower bending needle and a front needle guard are arranged on the lower bending needle shaft through the lower bending needle frame, a rear needle guard is arranged on the needle guard frame shaft, the needle guard frame shaft is connected to the main shaft through the needle guard frame crank and the needle guard connecting rod, the lower bending needle shaft is provided with a bending needle slide frame, a front block and a rear block are arranged, a slide groove is arranged on the bending needle slide frame, a sliding block is arranged on the front block, and the sliding block is arranged in the slider groove, one end of the lower bending needle shaft crank is connected to the lower bending needle shaft and is located between the front block and the rear block, the other end of the lower bending needle shaft crank is connected to the lower bending needle connecting rod shaft, a lower bending needle driving rod is also arranged on the lower bending needle connecting rod shaft, the lower bending needle driving rod is connected to the main shaft through the lower bending needle connecting rod, and the bending needle slide frame is connected to the main shaft through the bending needle adjusting column and the lower bending needle rocker arm connecting rod.

[0009] In the above-mentioned cylinder-type interlock sewing machine, it also includes a tooth height adjustment mechanism, which includes a feed dog height adjustment eccentric shaft arranged parallel to the main axis, a second eccentric section is arranged at one end of the feed dog height adjustment eccentric shaft, and a second slide groove is arranged at the other end of the feed dog and the differential tooth, the second eccentric section is connected to the second slide groove through a second slider, and the feed dog height adjustment eccentric shaft is driven to rotate by the tooth height adjuster.

[0010] In the above-mentioned cylinder-type interlock sewing machine, the tooth height adjuster includes a scale plate fixed on the base, a third adjustment hole is arranged on the scale plate, the feed dog height adjustment eccentric shaft is fixedly connected to one end of the second adjustment rod, and the adjustment button passes through the third adjustment hole and is connected to the other end of the second adjustment rod.

[0011] The outstanding advantages of the present invention compared with the prior art are: The present invention arranges the differential tooth frame and the cloth feed tooth frame in the base, and can use the oil supply system of the main shaft inside the base. When the sewing machine works for a long time, the differential tooth frame and the cloth feed tooth frame will not be worn or the gap will be enlarged due to insufficient oil supply. At the same time, it can also prevent impurities such as thread hair from adhering to the tooth frame, thereby improving the quality and service life of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is one of the schematic diagrams after the base of the present invention is disassembled; Figure 3 This is the second schematic diagram of the base of the present invention after being disassembled; Figure 4 This is the third schematic diagram of the base of the present invention after being disassembled; Figure 5 It is one of the partial schematic diagrams of the present invention; Figure 6 This is the second partial schematic diagram of the present invention; Figure 7 It is the third partial schematic diagram of the present invention; Figure 8 It is the fourth partial schematic diagram of the present invention.

[0013] In the figure: 1, main shaft; 2, main cloth feed shaft; 3, differential tooth rack; 4, cloth feed tooth rack; 5, differential tooth; 6, cloth feed tooth; 7, base; 8, barrel type sewing head; 9, first slide groove; 10, first slider; 11, main feed connecting rod; 12, crank section; 13, guide slide; 14, rocker slider; 15, rocker; 16, guide hole; 17, differential connecting rod; 18, differential adjustment crank; 19, differential spanner shaft; 20, first adjustment rod; 21, adjustment plate; 22, first adjustment hole; 23, second adjustment hole; 24, adjustment stud; 25, differential adjustment screw; 26, knob; 27, arc hole; 28, cloth feed control frame; 29, cloth feed connecting rod; 30, short connecting rod; 31, feed connecting rod; 32, cloth feed crank; 33, Needle guard frame shaft; 34, lower bending needle shaft; 35, lower bending needle frame; 36, lower bending needle; 37, front needle guard; 38, rear needle guard; 39, needle guard frame crank; 40, needle guard connecting rod; 41, bending needle slider frame; 42, front stopper; 43, rear stopper; 44, slider slot; 45, sliding block; 46, lower bending needle shaft crank; 47, lower bending needle connecting rod shaft; 48, lower bending needle driving rod; 49, lower bending needle connecting rod; 50, bending needle adjustment column; 51, lower bending needle rocker arm connecting rod; 52, feed dog height adjustment eccentric shaft; 53, second slide slot; 54, second slider; 55, scale plate; 56, third adjustment hole; 57, second adjustment rod; 58, adjustment knob; 59, stitch length adjustment connecting rod; 60, feed control crank; 61, stitch length adjustment shaft. DETAILED DESCRIPTION

[0014] The present invention is further described below with reference to specific embodiments. Figure 1 —8: The present invention provides a cylinder-type interlock sewing machine, which includes a cloth feeding mechanism and a main shaft 1. The cloth feeding mechanism includes a main cloth feeding shaft 2, a differential tooth frame 3, a cloth feeding tooth frame 4, and differential teeth 5 and cloth feeding teeth 6 respectively arranged on the differential tooth frame 3 and the cloth feeding tooth frame 4. The main shaft 1, the main cloth feeding shaft 2, the differential tooth frame 3, and the cloth feeding tooth frame 4 are arranged in a base 7. The differential teeth 5 and the cloth feeding teeth 6 are located in a cylinder-type sewing head 8 (a small mouth sewing head or a small square head sewing head). A first slide groove 9 is arranged at one end of the differential tooth frame 3 and the cloth feeding tooth frame 4. One end of the main shaft 1 A first eccentric section is provided at the end, and the first eccentric section is connected to the first slide groove 9 through a first slider 10. The feed tooth frame 4 is connected to the crank section 12 of the main feed shaft 2 through a main feed connecting rod 11. A guide slide 13 is provided on the differential tooth frame 3. One end of the rocker slider 14 is slidably arranged on the guide slide 13, and the other end passes through a guide hole 16 at one end of the rocker 15 and is connected to one end of the differential connecting rod 17. The other end of the rocker 15 is connected to the main feed shaft 2, and the other end of the differential connecting rod 17 is connected to the differential wrench shaft 19 through an adjustment crank 18.

[0015] The present invention arranges the differential tooth frame 3 and the cloth feed tooth frame 4 in the base 7, and can use the oil supply system of the main shaft 1 inside the base 7. When the sewing machine works for a long time, there will be no wear and enlargement of the gap between the differential tooth frame 3 and the cloth feed tooth frame 4 due to insufficient oil supply. At the same time, it can also prevent impurities such as thread hair from adhering to the tooth frame, thereby improving the quality and service life of the whole machine.

[0016] In order to adjust the differential amount, the differential adjuster is provided on the differential spanner shaft 19 of the present invention, and the differential adjuster includes a first adjusting rod 20 installed at one end of the differential spanner shaft 19 through a fastener and an adjusting plate 21 installed on the base 7, and a first adjusting hole 22 with the axis of the differential spanner shaft 19 as the center and a second adjusting hole 23 arranged in the up and down direction are provided on the adjusting plate 21, an adjusting stud 24 is screwed on the adjusting plate 21, and a differential adjusting screw 25 is provided on the adjusting stud 24, one end of the differential adjusting screw 25 extends into the second adjusting hole 23 and is pressed on the first adjusting rod 20, and the knob 26 passes through the first adjusting hole 22 and is screwed to the first adjusting rod 20, and a torsion spring is sleeved on the fastener, one arm of the torsion spring is connected to the base 7, and the other arm is connected to the adjusting plate 21, and the rotation angle of the first adjusting rod 20 is adjusted by adjusting the stud 24 and the knob 26, thereby driving the differential spanner shaft 19 to rotate to adjust the differential amount.

[0017] It should be noted that the crank section 12 of the main cloth feed shaft 2 of the present invention is provided with an arc hole 27, and the main cloth feed connecting rod 11 is connected to the arc hole 27. Generally speaking, the main cloth feed connecting rod 11 is arranged at the upper end of the arc hole 27. When the main cloth feed connecting rod 11 is arranged at the lower end of the arc hole 27, the needle size can be reduced, which is used for processing some thin materials.

[0018] The present invention also includes a stitch length adjustment mechanism, which includes a cloth feed control frame 28, a cloth feed connecting rod 29, a short connecting rod 30 and a feed connecting rod 31. The first arm and the second arm of the cloth feed control frame 28 are arranged on the base 7 through a pin shaft. One end of the cloth feed connecting rod 29 is located between the two arms of the cloth feed control frame 28 and is provided with a first connecting rod pin. One end of the short connecting rod 30 is connected to the first connecting rod pin, and the other end is connected to the first arm of the cloth feed control frame 28 through the second connecting rod pin. One end of the feed connecting rod 31 is connected to the first connecting rod pin, and the other end is connected to the main cloth feed shaft 2 through a cloth feed crank 32.

[0019] It should be noted that the needle distance adjustment mechanism of the present invention is driven and adjusted by a needle distance adjustment driving mechanism and a driving member. The needle distance adjustment driving mechanism includes a needle distance adjustment connecting rod 59 connected to the first arm of the cloth feeding control frame 28, and the needle distance adjustment connecting rod 59 is connected to the needle distance adjustment shaft 61 through a feeding control crank 60. One end of the needle distance adjustment crank is fixed on the needle distance adjustment shaft 61, and the other end is suspended. The suspended end of the needle distance adjustment crank abuts against the cam surface of the needle distance adjustment cam, and the needle distance adjustment cam is driven to rotate by the driving member. In this embodiment, the driving member is specifically a motor.

[0020] The needle guard structure of the present invention is as follows: it includes a needle guard frame shaft 33, a lower bending needle shaft 34, a lower bending needle 36 and a front needle guard 37 are arranged on the lower bending needle shaft 34 through a lower bending needle frame 35, a rear needle guard 38 is arranged on the needle guard frame shaft 33, the needle guard frame shaft 33 is connected to the main shaft 1 through a needle guard frame crank 39 and a needle guard connecting rod 40, a bending needle slide frame 41, a front stopper 42 and a rear stopper 43 are arranged on the lower bending needle shaft 34, the bending needle slide frame 41 is provided with a slide groove 44, and the front stopper 42 is provided with a slide Block 45, the sliding block 45 is arranged in the slider groove 44, one end of the lower bending needle shaft crank 46 is connected to the lower bending needle shaft 34 and is located between the front stopper 42 and the rear stopper 43, the other end of the lower bending needle shaft crank 46 is connected to the lower bending needle connecting rod shaft 47, and a lower bending needle driving rod 48 is also arranged on the lower bending needle connecting rod shaft 47, and the lower bending needle driving rod 48 is connected to the main shaft 1 through the lower bending needle connecting rod 49, and the bending needle slider frame 41 is connected to the main shaft 1 through the bending needle adjusting column 50 and the lower bending needle rocker arm connecting rod 51.

[0021] In addition, the present invention also includes a tooth height adjustment mechanism, which includes a feed dog height adjustment eccentric shaft 52 arranged parallel to the main shaft 1, a second eccentric section is arranged at one end of the feed dog height adjustment eccentric shaft 52, and a second slide groove 53 is arranged at the other end of the feed dog 6 and the differential tooth 5, the second eccentric section is connected to the second slide groove 53 through a second slider 54, and the feed dog height adjustment eccentric shaft 52 is driven to rotate by the tooth height adjuster.

[0022] Specifically, the tooth height adjuster includes a scale plate 55 fixed on the base 7, a third adjustment hole 56 is provided on the scale plate 55, the feed tooth height adjustment eccentric shaft 52 is fixedly connected to one end of the second adjustment rod 57, and the adjustment button 58 passes through the third adjustment hole 56 and is connected to the other end of the second adjustment rod 57.

[0023] The above embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder-type interlock sewing machine, characterized in that: The invention comprises a cloth feeding mechanism and a main shaft (1), wherein the cloth feeding mechanism comprises a main cloth feeding shaft (2), a differential tooth frame (3), a cloth feeding tooth frame (4), and differential teeth (5) and cloth feeding teeth (6) respectively arranged on the differential tooth frame (3) and the cloth feeding tooth frame (4), wherein the main shaft (1), the main cloth feeding shaft (2), the differential tooth frame (3), and the cloth feeding tooth frame (4) are arranged in a base (7), and the differential teeth (5) and the cloth feeding teeth (6) are located in a cylindrical seam head (8), and a first slide groove (9) is arranged at one end of the differential tooth frame (3) and the cloth feeding tooth frame (4), and a first eccentric section is arranged at one end of the main shaft (1). An eccentric section is connected to the first slide groove (9) through a first slider (10); the cloth feed tooth frame (4) is connected to the crank section (12) of the main cloth feed shaft (2) through a main feed connecting rod (11); a guide slide frame (13) is provided on the differential tooth frame (3); one end of a rocker slider (14) is slidably arranged on the guide slide frame (13); the other end passes through a guide hole (16) at one end of a rocker (15) and is connected to one end of a differential connecting rod (17); the other end of the rocker is connected to the main cloth feed shaft (2); and the other end of the differential connecting rod (17) is connected to a differential wrench shaft (19) through a differential adjustment crank (18).

2. A cylinder-type interlock sewing machine according to claim 1, characterized in that: The differential wrench shaft (19) is provided with a differential adjuster, the differential adjuster comprising a first adjusting rod (20) mounted on one end of the differential wrench shaft (19) via a fastener and an adjusting plate (21) mounted on the base (7), the adjusting plate (21) being provided with a first adjusting hole (22) with the axis of the differential wrench shaft (19) as the center, and a second adjusting hole (23) arranged in the up-down direction, the first adjusting rod (20) being threaded with an adjusting stud (24), the adjusting stud (24) being provided with a differential adjusting screw. A joint screw rod (25), one end of the differential adjustment screw rod (25) extends into the second adjustment hole (23) and is pressed onto the first adjustment rod (20), the adjustment knob passes through the first adjustment hole (22) and is threadedly connected to the first adjustment rod (20), the fastener is sleeved with a torsion spring, one arm of the torsion spring is connected to the base (7), and the other arm is connected to the adjustment plate (21), the rotation angle of the adjustment plate (21) is adjusted by adjusting the stud (24) and the knob (26), thereby driving the differential spanner shaft (19) to rotate to adjust the differential amount.

3. A cylinder-type interlock sewing machine according to claim 1, characterized in that: The crank section (12) of the main cloth feeding shaft (2) is provided with an arc-shaped hole (27), and the main cloth feeding connecting rod (11) is connected to the arc-shaped hole (27).

4. A cylinder-type interlock sewing machine according to claim 1, characterized in that: The invention also comprises a needle distance adjustment mechanism, the needle distance adjustment mechanism comprising a cloth feed control frame (28), a cloth feed connecting rod (29), a short connecting rod (30) and a feeding connecting rod (31); a first arm and a second arm of the cloth feed control frame (28) are arranged on a base (7) via a pin shaft; one end of the cloth feed connecting rod (29) is located between the two arms of the cloth feed control frame (28) and is provided with a first connecting rod pin; one end of the short connecting rod (30) is connected to the first connecting rod pin and the other end is connected to the first arm of the cloth feed control frame (28) via a second connecting rod pin; one end of the feeding connecting rod (31) is connected to the first connecting rod pin and the other end is connected to the main cloth feed shaft (2) via a cloth feed crank (32).

5. A cylinder-type interlock sewing machine according to any one of claims 1 to 4, characterized in that: The needle guard shaft (33) further comprises a needle guard frame shaft (33), a lower needle bending shaft (34), a lower needle bending shaft (36) and a front needle guard (37) arranged on the lower needle bending shaft (34) via a lower needle bending frame (35), a rear needle guard (38) arranged on the needle guard frame shaft (33), the needle guard frame shaft (33) being connected to the main shaft (1) via a needle guard frame crank (39) and a needle guard connecting rod (40), a needle bending slide frame (41), a front stopper (42) and a rear stopper (43) being arranged on the lower needle bending shaft (34), a slide groove (44) being arranged on the needle bending slide frame (41), a slide block (45) being arranged on the front stopper (42), and a slide block (46) being arranged on the front stopper (42). ), a sliding block (45) is arranged in a slider groove (44), one end of a lower bending needle shaft crank (46) is connected to a lower bending needle shaft (34) and is located between a front stopper (42) and a rear stopper (43), the other end of the lower bending needle shaft crank (46) is connected to a lower bending needle connecting rod shaft (47), a lower bending needle driving rod (48) is also arranged on the lower bending needle connecting rod shaft (47), the lower bending needle driving rod (48) is connected to the main shaft (1) through a lower bending needle connecting rod (49), and the bending needle slider frame (41) is connected to the main shaft (1) through a bending needle adjusting column (50) and a lower bending needle rocker arm connecting rod (51).

6. The cylinder-type interlock sewing machine according to claim 1, characterized in that: The invention also comprises a tooth height adjustment mechanism, the tooth height adjustment mechanism comprising a feed tooth height adjustment eccentric shaft (52) arranged parallel to the main shaft (1), a second eccentric section being arranged at one end of the feed tooth height adjustment eccentric shaft (52), a second slide groove (53) being arranged at the other end of the feed tooth (6) and the differential tooth (5), the second eccentric section being connected to the second slide groove (53) via a second slider (54), and the feed tooth height adjustment eccentric shaft (52) being driven to rotate by the tooth height adjuster.

7. A cylinder-type interlock sewing machine according to claim 6, characterized in that: The tooth height adjuster comprises a scale plate (55) fixedly mounted on a base (7), a third adjustment hole (56) being arranged on the scale plate (55), the feed tooth height adjustment eccentric shaft (52) being fixedly connected to one end of a second adjustment rod (57), and the adjustment knob (58) passing through the third adjustment hole (56) being connected to the other end of the second adjustment rod (57).

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