TWM546410U - Automatic pitch-adjusting device for forward-backward feed dog of four-needle six-thread sewing machine - Google Patents

Description

Automatic adjustment device for feeding teeth before and after four-needle six-wire sewing machine

The invention relates to a distance adjusting device for feeding teeth of a four-needle six-wire sewing machine, in particular to an automatic adjusting device for adjusting the sewing distance of the front and rear feeding teeth by the electric eye to monitor the edge line of the cloth.

According to the high development of the textile industry technology, various garment materials that are different from traditional fabrics are gradually developed and manufactured. In addition, due to the improvement of social and economic standards, people are increasingly demanding their own clothing materials and shapes. Therefore, in order to cope with the design complexity of today's clothing, the structural design of the sewing machine itself must also be improved. The so-called "four-needle and six-wire sewing machine" in this case has the characteristics or function of its structure. It mainly combines the edges of two pieces of fabric and then sutures them. Therefore, some people in the industry call it a "crank-arm sewing machine". "Sewing sewing machine" or "sewing sewing machine"; however, because it is usually four-needle six-wire (including: four lanes, one bottom line and one upper thread) or four needles and seven lines (including: four lanes) The line, one bottom line and two upper lines are used for sewing. Therefore, it is called "four-needle six (seven) line sewing machine" or "four-needle six (seven) line sewing machine". The so-called "pitching distance" in this case is the "sewing line spacing" formed by the sewing between the bur and the second bur when adjusting the two pieces of fabric; specifically, in order to change the sewing The line spacing (commonly known as the thick and thin needles) is designed according to the appearance of various types of clothes. The traditional sewing machine has a structural design with a single feed tooth, so that the travel distance of the feed teeth can be adjusted during the use of the sewing machine. In order to change the size of the movement of the cloth, the sewing machine can form a sewing pitch of different sizes on the cloth due to the amount of movement of the cloth. However, as the design complexity of the clothes is increasing, the above-mentioned sewing machine with a single feed tooth is not enough to cope with the sewing work of today's clothing design. Therefore, the sewing machine manufacturer has also developed A four-needle six-wire sewing machine with a front feed tooth and a rear feed tooth, so that the four-needle six-wire sewing machine can achieve a more varied sewing function by separately adjusting the front and rear feed teeth, in order to cope with the present The demand for all kinds of clothing.

However, when two pieces of cloth (a first cloth 91 and a second cloth 92 as shown in FIG. 1) are sewn together to form a sewing line structure 90, the sewing thread of the sewing line structure 90 is obtained. The distance between the first fabric 91 and the end of the second fabric 92 is often easily pulled by an external force, thereby causing the sewing thread structure 90. More loose or broken after the change; therefore, if the sewing line structure 90 near the edge line 911 or the edge line 921 can be denser, that is, when sewing to the edge line When the sewing thread pitch of the 911 or the edge line 921 can be lowered, the problem of looseness or breakage caused by the external force of the sewing thread structure 90 can be effectively solved.

In the prior art, for example, a new patent of TW M526582, the prior art discloses a feed tooth automatic stroke adjusting device for a sewing machine, comprising: a first connecting rod, the first end of the first connecting rod is connected with a linkage rod, and The second end of the first link is pivotally connected to a guide shaft; a second link is connected to the first end of the second link, and a push pin is protruded from the second end of the second link And a dialing plate, the middle portion of the dialing plate is pivotally disposed on a rotating shaft, and the first end of the dialing plate is recessed with a sliding slot, and the second end of the dialing plate is provided with a long slotted hole, the long slotted hole For arranging the push pin; if, after a sensor senses that a work object is near the needle of the sewing machine, or triggers a signal before the work object leaves the needle of the sewing machine, the signal drives a signal The actuating lever displacement of the actuating member pushes a button, and a guide block linked to the linkage bar is adjacent to the swing center of the rocker arm to change the displacement stroke of a feed dog (equivalent to the feed dog teeth described in the present case). And after a period of time, the actuating rod is returned to make the work in front of the sewn At the end, the lower needles are sewn in a denser manner, while the other parts are sewn at the original sewing line spacing so that the work can be more secure at the beginning and end of the sewn. Stitching.

However, it is clear from the disclosure of this prior art, although this prior art The automatic stroke adjustment device can move the linkage by the displacement of the actuation rod of the actuating member to adjust the horizontal reciprocating displacement of the feed dog (forward feed), but the automatic stroke The adjustment device cannot simultaneously perform the overall displacement stroke adjustment for a rear feed tooth synchronization. On the other hand, the prior art actuator can displace the push button and interlock the linkage to adjust the feed tooth (forward feed), but the toggle is not designed for its swing swing. The size of the restricting structure, so the button can only be pushed to the maximum by the extension of the actuating lever, or pushed back to the minimum by the retracting action of the actuating lever returning, which does not meet the market demand.

The main purpose of the present invention is to solve the problem that the displacement distance adjustment of the forward feed tooth and the rear feed tooth can not be performed simultaneously in the implementation of the above prior art, and the shifting swing amplitude cannot be limited to affect the sewing line spacing. Controlled accuracy issues.

In order to achieve the above object, the present invention provides an automatic distance adjusting device for feeding teeth of a four-needle six-wire sewing machine, wherein the four-needle six-wire sewing machine has a casing, and the casing includes at least one forward feeding tooth and one rear feeding cloth. a tooth, the front feed tooth is driven by a front feed tooth linkage lever, and the front feed tooth linkage lever is driven by a front feed tooth push-pull rod, the front feed tooth push-pull rod is driven by a front end of a rocking member The feed tooth rocker is driven, and the rear feed tooth is driven by a rear feed tooth linkage lever, and the rear feed tooth linkage lever is driven by a rear feed tooth push-pull rod, and the rear feed tooth push-pull rod Driven by a rear feed tooth rocker at the other end of the rocking member, the rocking member is driven by a biaxial steering rod and simultaneously drives the rear feed tooth rocker and the front feed tooth rocker. The guiding rod is limited by a rod, which is driven by an extending rod fixed at one end of a sewing pitch adjusting spindle, and the sewing pitch adjusting spindle shaft is disposed in a shaft rotating driving member. Wherein the other side of the sewing pitch adjustment spindle runs through the side of the housing to be aligned with the automatic distance adjusting device The automatic distance adjusting device has at least one action member pivoted on the housing, a push-pull rod disposed on the action member and whose telescopic action is controlled by a signal sent by a sensor and a timer, and one end a driving rod pivotally connected to the push-pull rod and further pivoted to the housing, the other end of the driving rod is pivotally connected to a rotating rod And the rotating rod has an axial adjustment adjusting button for connecting and driving the sewing pitch to adjust the rotation of the main shaft, and the other ends of the rotating rod are respectively pivotally disposed on the casing to restrict rotation of the rotating rod A first limit cam and a second limit cam of the stroke.

Further, the four-needle six-wire sewing machine automatically feeds the teeth to the front and rear, wherein the action member is a pneumatic cylinder and has a first air port and a second air port, and the first air port and the second air port The timing of the intake or the timing of the outgassing is controlled by the signal sent by the sensor and the timer.

Further, the four-needle six-wire sewing machine automatically feeds the teeth to the front and rear, wherein the action member is a hydraulic cylinder, an electromagnet or a motor.

Further, the four-needle six-wire sewing machine automatically feeds the teeth to the front and rear, wherein the rotating rod has a sewing pitch dial fixed to the casing.

Further, the four-needle six-wire sewing machine automatically feeds the teeth to the front and rear, wherein the front feed dog push-pull rod is further limited by a front push-pull brake lever, and the front push-pull brake lever is provided by a front torque shaft Driven by the lever, the front torque shaft lever is driven by a feed dog adjustment assembly disposed outside the housing.

Further, the four-needle six-wire sewing machine automatically feeds the teeth to the front and rear, wherein the rear feed dog push-pull rod is further limited by a rear push-pull brake lever, and the rear push-pull brake lever is provided by a rear torque shaft Driven by the lever, the rear torque shaft lever is driven by a rear feed tooth adjustment assembly disposed outside the housing.

According to the above technical solution, the beneficial effects achieved by the present invention over the prior art are as follows: 1. The present invention drives the sewing pitch to adjust the rotation of the main shaft through the automatic distance adjusting device, so that the struts change the biaxial transduction. The lever moves to change the swing of the swinging member, thereby changing the front-rear displacement distance of the front feed dog linkage rod and the rear feed tooth linkage rod together, so as to achieve synchronization for the forward feed tooth and the rear feed tooth Adjust the sewing line spacing; Second, the creation through the two sides of the rotating rod The first limiting cam and the second limiting cam are disposed on the housing to limit the rotation of the rotating rod, thereby solving the problem that the rotating swing of the dial in the prior art cannot be limited, so as to achieve accuracy The purpose of regulating the spacing of the sewing thread.

10‧‧‧4-needle six-wire sewing machine

20‧‧‧shell

30‧‧‧Automatic distance adjustment device

301‧‧‧ first port

302‧‧‧second port

31‧‧‧Action parts

311‧‧‧Pushing rod

32‧‧‧Drive rod

33‧‧‧Rotary lever

331‧‧‧Axis adjustment toggle

34‧‧‧First limit cam

35‧‧‧second limit cam

36‧‧‧Sewing distance dial

40‧‧‧ shaft drive parts

41‧‧‧Sewing pitch adjustment spindle

411‧‧‧Extension rod

412‧‧‧ pole

42‧‧‧Two-axis guide rod

50‧‧‧Shake

51‧‧‧Shake fixed shaft

53‧‧‧Post feed rocker

55‧‧‧ Forward feed gear rocker

60‧‧‧ Forward feed gear linkage

61‧‧‧Pre-feeding push-pull rod

62‧‧‧ forward feed

70‧‧‧Back feed gear linkage

71‧‧‧Back feed dog push rod

72‧‧‧After delivery

80‧‧‧ Forward feed adjustment assembly

81‧‧‧Back feed adjustment assembly

82‧‧‧Pre-torque shaft puller

83‧‧‧ rear torque shaft puller

84‧‧‧Pre-pushing brake lever

85‧‧‧Push-pull brake lever

90‧‧‧Sewing line structure

901‧‧‧Seal section

91‧‧‧First cloth

911‧‧‧ edge line

92‧‧‧Second cloth

921‧‧‧ edge line

FIG. 1 is a schematic view showing a conventional sewing thread structure over an edge line.

Figure 2 is a perspective view of the appearance of the creation.

FIG. 3 is a perspective view showing the appearance of another perspective of the creation.

FIG. 4 is a perspective view showing a partial appearance of FIG. 3 of the present invention.

FIG. 5 is a perspective enlarged view showing the appearance of a partial exploded view of FIG. 4 .

FIG. 6 is a perspective enlarged view showing the appearance of another partial exploded view of FIG. 4 .

FIG. 7 is a perspective view showing the appearance of another perspective of the creation of FIG. 4 .

Fig. 8 is a plan view showing the assembly of the automatic distance adjusting device in the four-needle six-wire sewing machine.

FIG. 9 is a schematic plan view showing the continuous action of FIG. 8 .

FIG. 10 is a schematic plan view showing the action of adjusting the second limit cam of the continuous motion and rotation of FIG. 9 .

FIG. 11 is a schematic plan view showing the continuous action of FIG. 10 .

Figure 12 is a schematic view showing the structure of the sewing thread structure over the edge line.

The detailed description and technical content of this creation are described below with reference to the following figures: First, please refer to FIG. 2 to FIG. 7 , the present invention provides an automatic distance adjusting device for feeding teeth of a four-needle six-wire sewing machine. The four-needle six-wire sewing machine 10 has a casing 20, and the casing 20 includes at least one forward feed tooth 62 and one rear feed tooth 72. The front feed tooth 62 is driven by a front feed link linkage 60. The front feed dog linkage lever 60 is driven by a front feed dog push-pull lever 61. The front feed dog push-pull rod 61 is driven by a front feed dog rocker 55 at one end of a rocking member 50, and thereafter The feed dog 72 is driven by a rear feed tooth linkage lever 70, and thereafter The feed tooth linkage lever 70 is driven by a rear feed dog push-pull rod 71, and the rear feed dog push-pull rod 71 is driven by the rear feed dog rocker 53 at the other end of the rocking member 50. The two-axis transfer rod 42 drives and synchronously drives the rear feed dog rocker 53 and the front feed dog rocker 55. The two-axis guide rod 42 is limited by a rod 412, and the support rod 412 is The extension rod 411 is fixed to one end of a sewing pitch adjustment main shaft 41. The sewing pitch adjustment main shaft 41 is axially disposed in a shaft rotation driving member 40, wherein the sewing pitch adjustment main shaft 41 is at the other end. The auto-adjustment device 30 is coupled to the auto-adjustment device 30, and has an action member 31 pivotally mounted on the housing 20, and is disposed on the actuating member 31. The telescopic action is controlled by a sensor and a timer (this is a technique that is familiar to those skilled in the art, so that it is not otherwise drawn and marked), and the push-pull rod 311, one end and the push-pull rod 311 are controlled. A driving rod 32 pivotally connected to the housing 20, the other end of the driving rod 32 is pivotally connected to a rotating rod 33 One end of the rotating rod 33 has a shaft adjusting button 331 for connecting and driving the sewing pitch adjusting spindle 41, and the other ends of the rotating rod 33 are respectively pivoted on the casing 20 a first limiting cam 34 and a second limiting cam 35 for limiting the rotational stroke of the rotating rod 33; wherein the actuating member 31 can be a pneumatic cylinder having a first air port 301 and a second air port 302, The timing of the intake of the first port 301 and the second port 302 or the timing of the air outlet is controlled by the signal sent by the sensor and the timer; of course, the actuating member 31 may also be a hydraulic cylinder, an electromagnet or a motor. It is noted that a plurality of sewing pitch dials 36 may be fixed to the housing 20 above the rotating rod 33 to provide a more precise adjustment of the sewing line spacing. In addition, it is also worth mentioning that the front feed dog push-pull rod 61 is further limited by a front push-pull brake rod 84, which is a front torque shaft pivoted to a rocker fixed shaft 51. Driven by a lever 82, the front torque shaft trigger 82 is driven by a feed dog adjustment assembly 80 disposed outside the housing 20; and the rear feed dog push rod 71 is further pushed and pulled The rear brake pedal 85 is driven by a rear torque shaft puller 83 pivotally mounted on the rocker fixed shaft 51. The rear torque shaft pull rod 83 is disposed on the housing 20 The outer one of the rear feed tooth adjustment assemblies 81 is driven.

Further, please refer to FIG. 7 to FIG. 12 again, in the four-needle six-wire sewing machine 10 Before the sewing seam is applied, the first air port 301 of the actuating member 31 is normally inflated to keep the push-pull rod 311 normally extended as shown in FIG. 8, that is, the rotating rod 33 normally turns to a larger sewing thread. One side of the spacing position, when a first cloth 91 and a second cloth 92 in FIG. 12 form a sewing line structure 90 at the beginning of the seaming, at this time, the sensor (this is in the technical field) There is a technique familiar to those skilled in the art, so there is no additional drawing and labeling.) After sensing that an edge line 911 or an edge line 921 is close, a signal is sent to control the second port 302 of the actuating member 31 to intake the air. , the push-pull rod 311 is retracted to pull the driving rod 32 to rotate the rotating rod 33, that is, the rotating rod 33 is turned to the side of the smaller sewing line spacing position as shown in FIG. 9 , at this time, the shaft The adjustment knob 331 rotates the sewing pitch adjustment spindle 41 to change the front and rear displacement distances of the front feed dog 62 and the rear feed dog 72, and to reduce the sewing pitch, and then pass a timing. (this is also a technique familiar to those of ordinary skill in the art, so it is not In addition, the drawing and the marking.) after the preset time (about 5 seconds), another signal is sent to control the intake of the first port 301 of the actuating member 31 and the second port 302 is exhausted, so that the push-pull rod 311 is again Extending and pushing the driving rod 32 to rotate the rotating rod 33, that is to say, the rotating rod 33 is again turned to the side of the larger sewing line spacing position as shown in FIG. 10, at this time, the shaft adjusting button 331, the sewing pitch adjusting spindle 41 is rotated, so that the front and rear shifting distances of the front feed dog 62 and the rear feed dog 72 are changed together, and the sewing pitch is returned to the normal size again, and the sewing is formed. The seam section 901 is as shown in FIG. 12; it is worth mentioning that, similarly, before the seam of the first cloth 91 and the second cloth 92 is about to end, when the edge line 911 or the edge line 921 is close In the sensor, the sewing thread structure 90 will also form the seam section 901; it is also worth noting that when the user finds that the seam line spacing of the seam section 901 is too small, Rotating the second limiting cam 35 as shown in FIG. 10, causing the rotating lever 33 to be turned to a smaller sewing pitch The position of one side is limited and slightly enlarged as shown in FIG. 11 to precisely adjust the spacing of the sewing line; similarly, when the user finds that the sewing line spacing of the sewing thread structure 90 is too large, It is also possible to rotate the first limit cam 34 so that the pivot lever 33 is limited and slightly reduced when it is turned to the side of the larger sewing pitch position.

In summary, it can be clearly seen that the present creation is driven by the automatic distance adjusting device 30. The sewing pitch adjusting spindle 41 rotates, so that the strut 412 changes the action of the biaxial guiding rod 42 to change the swing of the swinging member 50, and the forward feeding gear linkage rod 60 and the rear feeding cloth can be changed together. The front-rear displacement distance of the tooth linkage rod 70 is synchronized for the purpose of adjusting the sewing line spacing between the front feed dog 62 and the rear feed dog 72. In addition, since the present invention passes through the rotating rod 33, the shell is respectively disposed on the shell. The body 20 is pivotally provided with the first limiting cam 34 and the second limiting cam 35 for limiting the rotation of the rotating lever 33, thereby achieving the purpose of accurately adjusting the sewing line spacing.

The above description has been made in detail, but the above is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the creation of the creation, that is, the equality of the patent application scope according to the present creation. Changes and modifications are still covered by the patents of this creation.

20‧‧‧shell

30‧‧‧Automatic distance adjustment device

301‧‧‧ first port

302‧‧‧second port

31‧‧‧Action parts

311‧‧‧Pushing rod

32‧‧‧Drive rod

33‧‧‧Rotary lever

331‧‧‧Axis adjustment toggle

34‧‧‧First limit cam

35‧‧‧second limit cam

36‧‧‧Sewing distance dial

41‧‧‧Sewing pitch adjustment spindle

80‧‧‧ Forward feed adjustment assembly

Claims (10)

The utility model relates to a four-needle six-wire sewing machine automatic feeding device for feeding teeth, the four-needle six-wire sewing machine (10) has a casing (20), and the casing (20) comprises at least one forward feeding tooth (62) And a rear feed tooth (72), the front feed tooth (62) is driven by a front feed tooth linkage rod (60), and the front feed tooth linkage rod (60) is driven by a front feed tooth (61), the front feed dog push-pull rod (61) is driven by a front feed dog rocker (55) at one end of a rocking member (50), and the rear feed dog (72) is sent by a rear feed Driven by the tooth linkage lever (70), the rear feed tooth linkage lever (70) is driven by a rear feed dog push-pull rod (71), and the rear feed dog push-pull rod (71) is driven by the rocker (50) The other end of the feed dog rocker (53) is driven by the double shaft guide rod (42) and synchronously drives the rear feed dog rocker (53) with the front a feed rocker (55), the two-axis transfer guide (42) is limited by a rod (412), which is driven by an extension rod (411), the extension rod (411) Fixed to one end of a sewing pitch adjusting spindle (41), the sewing pitch adjusting spindle (41) shaft is disposed in a shaft rotating driving member (40), The utility model is characterized in that: the other end of the sewing pitch adjusting main shaft (41) is connected to the automatic distance adjusting device (30) through a side of the casing (20), and the automatic adjusting device (30) has at least one pivoting device. An actuating member (31) of the housing (20), a push-pull rod (311), one end of which is disposed on the actuating member (31) and whose telescopic action is controlled by a sensor and a timer. a driving rod (32) pivotally connected to the push-pull rod (311) and further pivoted to the housing (20), the other end of the driving rod (32) is pivotally connected to one end of a rotating rod (33), and the rotation The rod (33) has an axial adjustment knob (331) for coupling and driving the sewing pitch adjustment spindle (41), and the other ends of the rotation rod (33) are respectively pivoted on the shell A first limiting cam (34) and a second limiting cam (35) are defined on the body (20) for limiting the rotation of the rotating rod (33). The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 1, wherein the actuating member (31) is a pneumatic cylinder and has a first air port (301) and a second air port (302) , the first port (301) and the first The intake timing or the outlet timing of the two ports (302) is controlled by the signal sent by the sensor and the timer. The automatic pitch adjustment device for feeding the teeth of the four-needle six-wire sewing machine according to claim 1, wherein the action member (31) is a hydraulic cylinder, an electromagnet or a motor. The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 1, 2 or 3, wherein the rotating rod (33) has a sewing space fixed to the casing (20) Dial (36). The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 1, 2 or 3, wherein the front feed dog push-pull rod (61) is further limited by a front push-pull brake lever (84) The front push-pull brake lever (84) is driven by a front torque type shaft puller (82), and the front torque type shaft pull rod (82) is provided by a front feed tooth disposed outside the casing (20). Adjusted by the adjustment component (80). The automatic pitch adjustment device for feeding the teeth of the four-needle six-wire sewing machine according to claim 4, wherein the front feed dog push-pull rod (61) is further limited by a front push-pull brake lever (84), the front push-pull The brake lever (84) is driven by a front torque type shaft puller (82), and the front torque type shaft pull rod (82) is provided by a front feed tooth adjusting component (80) disposed outside the casing (20). ) Driven by. The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 1, 2 or 3, wherein the rear feed dog push-pull rod (71) is further limited by a rear push-pull brake lever (85) The rear push brake lever (85) is driven by a rear torque type shaft puller (83), and the rear torque type shaft pull rod (83) is provided by a rear feed tooth disposed outside the housing (20). Adjusted by the adjustment component (81). The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 4, wherein the rear feed dog push-pull rod (71) is further limited by a rear push-pull brake lever (85), and the rear push-pull The brake lever (85) is driven by a rear torque type shaft puller (83), and the rear torque type shaft pull rod (83) is provided by a rear feed tooth adjusting component (81) disposed outside the casing (20). ) Driven by. The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 5, wherein the rear feed dog push-pull rod (71) is further limited by a rear push-pull brake lever (85), and the rear push-pull The brake lever (85) is driven by a rear torque type shaft puller (83), and the rear torque type shaft pull rod (83) is provided by a rear feed tooth adjusting component (81) disposed outside the casing (20). ) Driven by. The automatic distance adjusting device for feeding the teeth of the four-needle six-wire sewing machine according to claim 6, wherein the rear feed dog push-pull rod (71) is further restricted by a rear push-pull brake lever (85), and the rear push-pull The brake lever (85) is driven by a rear torque type shaft puller (83), and the rear torque type shaft pull rod (83) is provided by a rear feed tooth adjusting component (81) disposed outside the casing (20). ) Driven by.