CN220413683U - Inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of sewing machine - Google Patents
Inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of sewing machine Download PDFInfo
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- CN220413683U CN220413683U CN202321314137.5U CN202321314137U CN220413683U CN 220413683 U CN220413683 U CN 220413683U CN 202321314137 U CN202321314137 U CN 202321314137U CN 220413683 U CN220413683 U CN 220413683U
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- adjusting
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- 238000009958 sewing Methods 0.000 title claims abstract description 34
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Abstract
The utility model belongs to the technical field of sewing machines, and particularly relates to an alternating quantity adjusting and automatic presser foot lifting mechanism for an inner presser foot and an outer presser foot of a sewing machine. Aiming at the problems of lower automation degree and more complex operation of a control mode in the prior art, the utility model provides an inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of a sewing machine, which comprises an inner presser foot connected with one end of a presser foot control mechanism and an outer presser foot connected with one end of the alternating quantity adjusting mechanism, wherein a driving motor is further arranged in a machine shell, the output end of the driving motor is connected with a driving control shaft, and the driving control shaft is fixedly connected with a first cam and a second cam. The utility model adopts the double-cam structure arranged along the axial line direction of the drive control shaft, utilizes the driving force of one motor to simultaneously control the lifting of the inner presser foot and the outer presser foot through the double-cam structure, adjusts the alternating quantity of the inner presser foot and the outer presser foot through the phase difference of the double cams, has high degree of automation and simplifies the operation.
Description
Technical Field
The utility model belongs to the technical field of sewing machines, and particularly relates to an alternating quantity adjusting and automatic presser foot lifting mechanism for an inner presser foot and an outer presser foot of a sewing machine.
Background
A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads. The sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastics, paper and the like, and has the advantages of neat and beautiful stitch, smoothness, firmness, high sewing speed, simple and convenient use and the like.
The internal transmission structure of the sewing machine commonly used in the prior art is shown in fig. 1. The inner presser foot a and the outer presser foot b are respectively connected to a control rod c through a transmission mechanism, a ball screw d is arranged on the control rod c, an adjusting dial e is arranged on one side of the ball screw d, the ball screw d on the control rod c drives the control rod c to rotate by a certain angle through rotating a cam on the adjusting dial e, and then the operation of lifting the inner presser foot and the outer presser foot and the alternate quantity adjustment of the inner presser foot are achieved through transmission of transmission mechanisms such as a crank and the like.
The control mode of the prior art is low in automation degree and complex in operation.
Disclosure of Invention
The utility model aims to solve the problems and provide the mechanism for adjusting the alternation amount of the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, which has high degree of automation and simplified operation.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an interior outer presser foot of sewing machine is volume regulation in turn and automatic presser foot mechanism of lifting, includes the interior presser foot of connecting in presser foot control mechanism one end and connects the outer presser foot in volume adjustment mechanism one end in turn, and the one end that presser foot control mechanism kept away from interior presser foot and the one end that volume adjustment mechanism kept away from outer presser foot in turn all extend to the casing in, still be equipped with driving motor in the casing, be connected with drive control axle on driving motor's the output, still fixedly connected with first cam and second cam on the drive control axle, and first cam and second cam set gradually along drive control axle's axial lead direction, rotate drive control axle can make first cam press to establish on volume adjustment mechanism in turn, and the second cam is pressed and is established on presser foot control mechanism.
In the mechanism for adjusting the alternating amount of the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, the phase difference between the first cam and the second cam is 60-120 degrees.
In the above-mentioned sewing machine internal and external presser foot alternating quantity adjustment and automatic presser foot lifting mechanism, the presser foot control mechanism is including the driven shaft that is located second cam one side, the driven shaft links to each other with the one end of transfer line through first swing arm, the one end that the transfer line kept away from the driven shaft is connected with and carries and draws the subassembly, interior presser foot fixed connection is on carrying and drawing the subassembly.
In the mechanism for adjusting the alternating quantity of the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, the presser foot control mechanism further comprises a shaft sleeve sleeved on the driven shaft, and the shaft sleeve is positioned between the driven shaft and the second cam and is rotationally connected with the driven shaft.
In the above-mentioned presser foot mechanism is lifted in turn volume regulation and automation to inside and outside presser foot of sewing machine, carry and draw the subassembly and establish the uide bushing on the uide bushing including guide bar and cover, uide bushing and guide bar sliding connection, interior pressure foot fixed connection is in uide bushing's one end, the one end of uide bushing still is equipped with the fixing base, fixing base fixed connection is on the casing, carries and draws the subassembly and still includes one end rotation to be connected on the transfer line, and the other end is rotated the second swing arm of being connected with carrying the pull bar, the one end that the second swing arm was kept away from to carrying the pull bar is connected with uide bushing.
In the mechanism for adjusting the alternating quantity of the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, the mechanism further comprises a reset spring sleeved outside the guide rod, one end of the reset spring is connected to the guide sleeve, and the other end of the reset spring is connected to the fixing seat.
In the mechanism for alternately adjusting the inner and outer presser feet of the sewing machine and automatically lifting the presser feet, one end of the lifting pull rod is provided with a sleeve hole, one end of the pin shaft is sleeved in the sleeve hole, and the other end of the pin shaft is fixedly connected to the guide sleeve.
In the mechanism for alternately adjusting the inner and outer presser feet and automatically lifting the presser feet of the sewing machine, the sleeve hole is in a long groove shape, the pin shaft is movably connected in the sleeve hole, and the pin shaft can relatively move along the length direction of the sleeve hole.
In the mechanism for adjusting the alternating quantity of the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, the driving motor is a stepping motor.
In the mechanism for alternately adjusting the inner presser foot and the outer presser foot of the sewing machine and automatically lifting the presser foot, the machine shell is further provided with a reinforcing rib plate, the reinforcing rib plate is fixedly connected with a mounting block, and the driving motor is fixedly arranged on the mounting block.
Compared with the prior art, the utility model has the advantages that:
1. the utility model adopts the double-cam structure arranged along the axial line direction of the drive control shaft, utilizes the driving force of one motor to simultaneously control the lifting of the inner presser foot and the outer presser foot through the double-cam structure, adjusts the alternating quantity of the inner presser foot and the outer presser foot through the phase difference of the double cams, has high degree of automation and simplifies the operation.
2. The sleeve hole is arranged in a long groove shape, so that a blank path difference can be generated in the driving and steering process, and the sleeve hole can be more suitable for operation requirements.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view of the internal structure of the present utility model;
FIG. 4 is a schematic view of a part of the structure of the present utility model;
FIG. 5 is a schematic view of a portion of the structure of the present utility model from another perspective;
fig. 6 is a schematic diagram of a transmission structure of a first cam according to the present utility model.
In the figure: the presser foot control mechanism 1, the inner presser foot 2, the alternating amount adjusting mechanism 3, the outer presser foot 4, the casing 5, the driving motor 6, the driving control shaft 7, the first cam 8, the second cam 9, the driven shaft 11, the first swing arm 12, the transmission rod 13, the lifting assembly 14, the shaft sleeve 15, the reinforcing rib plate 51, the mounting block 52, the guide rod 141, the guide sleeve 142, the fixing seat 143, the lifting rod 144, the second swing arm 145, the return spring 146 and the pin 147.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
Referring to fig. 2-4, an alternate amount adjusting and automatic presser foot lifting mechanism for an inner presser foot and an outer presser foot of a sewing machine comprises an inner presser foot 2 connected to one end of a presser foot control mechanism 1 and an outer presser foot 4 connected to one end of an alternate amount adjusting mechanism 3, wherein one end of the presser foot control mechanism 1, which is far away from the inner presser foot 2, and one end of the alternate amount adjusting mechanism 3, which is far away from the outer presser foot 4, extend into a machine shell 5, a driving motor 6 is further arranged in the machine shell 5, a driving control shaft 7 is connected to the output end of the driving motor 6, a first cam 8 and a second cam 9 are further fixedly connected to the driving control shaft 7, the first cam 8 and the second cam 9 are sequentially arranged along the axial line direction of the driving control shaft 7, the first cam 8 can be pressed on the alternate amount adjusting mechanism 3 by rotating the driving control shaft 7, and the second cam 9 is pressed on the presser foot control mechanism 1. In the present utility model, a first cam 8 on a clockwise rotation drive control shaft 7 is pressed against an alternate amount adjusting mechanism 3, and a second cam 9 is pressed against a presser foot control mechanism 1. Wherein, preferably, the driving motor 6 is a stepping motor. The drive motor 6 is a stepping motor, so that the angle through which the drive control shaft 7 rotates can be controlled more accurately.
When the automatic control device is used, the driving motor 6 is started, the driving motor 6 drives the driving control shaft 7 to rotate, and at the moment, the first cam 8 and the second cam 9 on the driving control shaft 7 rotate along with the driving control shaft 7 and are sequentially pressed on the alternating quantity adjusting mechanism 3 and the presser foot control mechanism 1, so that the outer presser foot 4 and the inner presser foot 2 are sequentially driven to be lifted in a staggered mode. The utility model adopts a double-cam structure arranged along the axial line direction of the drive control shaft 7, utilizes a motor driving force to simultaneously control the lifting of the inner presser foot 2 and the outer presser foot 4 through the double-cam structure, adjusts the time difference of staggered lifting of the outer presser foot 4 and the inner presser foot 2 through the phase difference of the double cams, namely adjusts the alternating quantity of the inner presser foot and the outer presser foot, has high automation degree and simplifies the operation.
Preferably, the phase difference between the first cam 8 and the second cam 9 is 60-120 degrees. The included angle between the position with the largest distance of the first cam 8 deviating from the center of the driving control shaft 7 and the position with the largest distance of the second cam 9 deviating from the center of the driving control shaft 7 is 60-120 degrees, so that the first cam 8 and the second cam 9 can be used for controlling the inner presser foot 2 and the outer presser foot 4 to alternately lift when the driving motor 6 drives the driving control shaft 7 to rotate. The utility model can simply and conveniently realize the adjustment of the alternating quantity of the inner presser foot and the outer presser foot by adjusting the phase difference between the first cam 8 and the second cam 9.
Specifically, as shown in fig. 6, the driving control shaft 7 drives the first cam 8 to rotate, the first cam 8 is an eccentric cam, the first cam 8 drives the connecting rod 8a, the connecting rod 8a is connected with the adjusting crank 8b through the short pin 8c, one end of the adjusting crank 8b is connected with the pin 8d arranged on the casing, the other end is connected with the alternating quantity adjusting mechanism 3, and when in use, the driving motor 6 rotates to drive the first cam 8 to rotate to realize the adjustment of the alternating quantity of the inner presser foot and the outer presser foot.
Referring to fig. 4 and 5, the presser foot control mechanism 1 includes a driven shaft 11 located at one side of the second cam 9, the driven shaft 11 is connected with one end of a transmission rod 13 through a first swing arm 12, one end of the transmission rod 13 far away from the driven shaft 11 is connected with a lifting component 14, and the inner presser foot 2 is fixedly connected to the lifting component 14.
Preferably, the presser foot control mechanism 1 further comprises a shaft sleeve 15 sleeved on the driven shaft 11, and the shaft sleeve 15 is located between the driven shaft 11 and the second cam 9 and is rotationally connected with the driven shaft 11. This makes it possible to change the sliding friction between the second cam 9 and the driven shaft 11 to the rolling friction between the second cam 9 and the sleeve 15, reducing the friction between the two mechanisms.
Specifically, the lifting assembly 14 includes a guide rod 141 and a guide sleeve 142 sleeved on the guide rod 141, the guide sleeve 142 is slidably connected with the guide rod 141, the inner pressure foot 2 is fixedly connected with one end of the guide sleeve 142, one end of the guide rod 141 is further provided with a fixing seat 143, the fixing seat 143 is fixedly connected with the casing 5, the lifting assembly 14 further includes a second swing arm 145 with one end rotatably connected with the transmission rod 13 and the other end rotatably connected with the lifting rod 144, and one end of the lifting rod 144 far away from the second swing arm 145 is connected with the guide sleeve 142.
When in use, the second cam 9 rotates and is pressed on the shaft sleeve 15, so that the driven shaft 11 rotates, thereby driving the transmission rod 13 to rotate, the transmission rod 13 drives the second swing arm 145 to swing so as to lift or press the lifting rod 144, and the lifting rod 144 pulls the guide sleeve 142 to repeatedly move along the axial line direction of the guide rod 141, thereby driving the inner presser foot 2 to reciprocally lift.
Preferably, the guide rod 141 is further provided with a return spring 146 sleeved outside the guide rod 141, one end of the return spring 146 is connected to the guide sleeve 142, and the other end is connected to the fixing seat 143. The return spring 146 acts to facilitate return while providing a tensioning force to the guide sleeve 142.
As shown in fig. 5, one end of the lifting rod 144 is provided with a sleeve hole, one end of the pin 147 is sleeved in the sleeve hole, and the other end is fixedly connected to the guide sleeve 142. The sleeve hole is in a long groove shape, the pin shaft 147 is movably connected in the sleeve hole, and the pin shaft 147 can relatively move along the length direction of the sleeve hole. The sleeve hole is arranged in a long groove shape, so that a blank path difference can be generated in the driving and steering process, and the sleeve hole can be more suitable for operation requirements.
Referring to fig. 2 and 3, the casing 5 is further provided with a reinforcing rib plate 51, the reinforcing rib plate 51 is fixedly connected with a mounting block 52, and the driving motor 6 is fixedly mounted on the mounting block 52. This way of installation makes driving motor 6 more firm, and driving motor 6 also is difficult for transmitting to presser foot department in the fine shake of during operation.
The alternating amount adjusting mechanism 3 in the utility model can also adopt a specific structure similar to the presser foot control mechanism 1 to play a role of controlling the outer presser foot 4, can also adopt a transmission mode that a plurality of swing arms are mutually matched as shown in fig. 2, namely, the alternating amount adjusting mechanism described in the patent application of the utility model with the application number of 201811641007.6, and can also adopt other specific structures in the prior art.
The working principle of the utility model is as follows: when the automatic presser foot lifting device is used, the driving motor 6 is started, the driving motor 6 drives the driving control shaft 7 to rotate, at the moment, the first cam 8 and the second cam 9 on the driving control shaft 7 rotate along with the driving control shaft 7 and are sequentially pressed on the alternating quantity adjusting mechanism 3 and the presser foot control mechanism 1, the second cam 9 rotates and is pressed on the shaft sleeve 15, the driven shaft 11 rotates, the driving rod 13 is driven to rotate, the driving rod 13 drives the second swing arm 145 to swing to lift or press the lifting pull rod 144, the lifting pull rod 144 pulls the guide sleeve 142 to repeatedly move along the axial lead direction of the guide rod 141, the inner presser foot 2 is driven to reciprocally lift, the outer presser foot 4 is driven to reciprocally lift by the first cam 8, and therefore the outer presser foot 4 and the inner presser foot 2 are alternately lifted. The utility model adopts a double-cam structure arranged along the axial line direction of the drive control shaft 7, utilizes a motor driving force to simultaneously control the lifting of the inner presser foot 2 and the outer presser foot 4 through the double-cam structure, adjusts the time difference of staggered lifting of the outer presser foot 4 and the inner presser foot 2 through the phase difference of the double cams, namely adjusts the alternating quantity of the inner presser foot and the outer presser foot, has high automation degree and simplifies the operation.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although terms of the presser foot control mechanism 1, the inner presser foot 2, the alternate amount adjusting mechanism 3, the outer presser foot 4, the housing 5, the driving motor 6, the driving control shaft 7, the first cam 8, the second cam 9, the driven shaft 11, the first swing arm 12, the transmission lever 13, the lifting assembly 14, the boss 15, the reinforcing rib plate 51, the mounting block 52, the guide lever 141, the guide bush 142, the fixing seat 143, the lifting lever 144, the second swing arm 145, the return spring 146, the pin 147, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (10)
1. The utility model provides a presser foot mechanism is lifted in automation to interior outer presser foot volume regulation of sewing machine, includes interior presser foot (2) of connecting in presser foot control mechanism (1) one end and connects outer presser foot (4) in volume adjustment mechanism (3) one end in turn, and one end that presser foot control mechanism (1) kept away from interior presser foot (2) and the one end that outer presser foot (4) were kept away from to volume adjustment mechanism (3) in turn all extend to in casing (5), its characterized in that: still be equipped with driving motor (6) in casing (5), be connected with drive control axle (7) on the output of driving motor (6), still fixedly connected with first cam (8) and second cam (9) on drive control axle (7), and first cam (8) and second cam (9) set gradually along the axial lead direction of drive control axle (7), rotate drive control axle (7) and can make first cam (8) press and establish on alternate volume adjustment mechanism (3), second cam (9) press and establish on presser foot control mechanism (1).
2. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 1, wherein: the phase difference between the first cam (8) and the second cam (9) is 60-120 degrees.
3. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 1, wherein: the presser foot control mechanism (1) comprises a driven shaft (11) positioned at one side of the second cam (9), the driven shaft (11) is connected with one end of a transmission rod (13) through a first swing arm (12), one end of the transmission rod (13) away from the driven shaft (11) is connected with a lifting assembly (14), and the inner pressure foot (2) is fixedly connected to the lifting assembly (14).
4. The mechanism for adjusting the alternating quantity of the inner presser foot and the outer presser foot and automatically lifting the presser foot of the sewing machine according to claim 3, wherein: the presser foot control mechanism (1) further comprises a shaft sleeve (15) sleeved on the driven shaft (11), and the shaft sleeve (15) is positioned between the driven shaft (11) and the second cam (9) and is rotationally connected with the driven shaft (11).
5. The mechanism for adjusting the alternating quantity of the inner presser foot and the outer presser foot and automatically lifting the presser foot of the sewing machine according to claim 3, wherein: the lifting assembly (14) comprises a guide rod (141) and a guide sleeve (142) sleeved on the guide rod (141), the guide sleeve (142) is in sliding connection with the guide rod (141), the inner pressure foot (2) is fixedly connected with one end of the guide sleeve (142), one end of the guide rod (141) is further provided with a fixing seat (143), the fixing seat (143) is fixedly connected onto the casing (5), the lifting assembly (14) further comprises a second swing arm (145) with one end rotatably connected onto the transmission rod (13) and the other end rotatably connected with the lifting rod (144), and one end, far away from the second swing arm (145), of the lifting rod (144) is connected with the guide sleeve (142).
6. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 5, wherein: the guide sleeve is characterized by further comprising a return spring (146) sleeved outside the guide rod (141), one end of the return spring (146) is connected to the guide sleeve (142), and the other end of the return spring is connected to the fixing seat (143).
7. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 5, wherein: one end of the lifting rod (144) is provided with a sleeve hole, one end of the pin shaft (147) is sleeved in the sleeve hole, and the other end of the pin shaft is fixedly connected to the guide sleeve (142).
8. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 7, wherein: the sleeve hole is in a long groove shape, the pin shaft (147) is movably connected in the sleeve hole, and the pin shaft (147) can relatively move along the length direction of the sleeve hole.
9. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 1, wherein: the driving motor (6) is a stepping motor.
10. The mechanism for adjusting and automatically lifting the presser foot for the sewing machine according to claim 1, wherein: reinforcing rib plates (51) are further arranged on the machine shell (5), mounting blocks (52) are fixedly connected to the reinforcing rib plates (51), and the driving motor (6) is fixedly mounted on the mounting blocks (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321314137.5U CN220413683U (en) | 2023-05-25 | 2023-05-25 | Inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321314137.5U CN220413683U (en) | 2023-05-25 | 2023-05-25 | Inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220413683U true CN220413683U (en) | 2024-01-30 |
Family
ID=89647658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321314137.5U Active CN220413683U (en) | 2023-05-25 | 2023-05-25 | Inner and outer presser foot alternating quantity adjusting and automatic presser foot lifting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220413683U (en) |
-
2023
- 2023-05-25 CN CN202321314137.5U patent/CN220413683U/en active Active
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