CN209759737U - sewing machine presser foot actuating mechanism and sewing machine - Google Patents
sewing machine presser foot actuating mechanism and sewing machine Download PDFInfo
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- CN209759737U CN209759737U CN201920016730.9U CN201920016730U CN209759737U CN 209759737 U CN209759737 U CN 209759737U CN 201920016730 U CN201920016730 U CN 201920016730U CN 209759737 U CN209759737 U CN 209759737U
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Abstract
The utility model relates to a sewing machine presser foot actuating mechanism, include: the output end of the motor is connected with a gear and can drive the gear to rotate by a preset angle; the rack is meshed with the gear and can move for a preset distance under the driving of the gear, and a shifting block is arranged on the rack; one end of the connecting rod mechanism is connected with the shifting block in a sliding mode, so that the other end of the connecting rod mechanism can be lifted up or pressed down under the shifting of the shifting block; and one end of the connecting rod mechanism, which is far away from the sliding connection of the shifting block, can press the presser bar downwards through the presser spring. The utility model discloses a linkage of motor, gear, rack, link mechanism and presser bar can realize the automatic rising presser foot, and control is accurate, has improved sewing machine's sewing quality and sewing efficiency.
Description
Technical Field
The utility model relates to a sewing machine technical field, in particular to sewing machine presser foot actuating mechanism.
Background
a sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material.
The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.
Along with the improvement of the level of the sewing industry, the common sewing machine cannot meet the requirements of the current market, when sewing materials with different thicknesses, the height of a press foot of the common sewing machine is fixed, the materials cannot be pressed well, the bad sewing effects such as thread breakage, thread floating, needle skipping and the like are caused, the quality of the sewing products cannot reach the satisfaction degree of customers, and the stitch seam obviously influences the sewing quality.
wherein, there are more advanced industrial sewing machines that can adjust the height of the presser foot, or adopt the way of manual regulation to adjust the height of the middle presser foot, very inconvenient; or the structure is very complicated, the control is not accurate, the cost is high, and the adjusting effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned at least partial problem, provide a sewing machine presser foot actuating mechanism, aim at realizing lifting or pushing down the accurate control of distance on the presser foot pole through the linkage of motor, rack, link mechanism and presser foot pole, improve sewing machine's sewing quality and sewing efficiency.
The utility model provides a sewing machine presser foot actuating mechanism, include:
The output end of the motor is connected with a gear and can drive the gear to rotate by a preset angle;
the rack is meshed with the gear and can move for a preset distance under the driving of the gear, and a shifting block is arranged on the rack;
One end of the connecting rod mechanism is connected with the shifting block in a sliding mode, so that the other end of the connecting rod mechanism can be lifted up or pressed down under the shifting of the shifting block;
and one end of the connecting rod mechanism, which is far away from the sliding connection of the shifting block, can press the presser bar downwards through the presser spring.
In one embodiment, the presser foot driving mechanism further includes a guide base, a guide groove extending along the sliding direction of the rack is provided on the guide base, and the rack is slidably disposed in the guide groove.
In one embodiment, the gear is connected with the output end of the motor in a key mode or welded mode.
In one embodiment, the link mechanism includes:
The rear lever is provided with a first switching hole and a second switching hole, and is rotatably connected to the sewing machine shell through the first switching hole, and the sliding groove and the second switching hole are respectively positioned on two sides of the first switching hole, which are not collinear;
A connecting rod, one end of which is rotatably connected to the second transfer hole;
the front lever is provided with a first axle center, a first rotary hole and a second rotary hole which are respectively positioned at two sides of the first axle center, the front lever is rotatably connected to the shell of the sewing machine through the first axle center, and the other end of the connecting rod is connected to the first rotary hole;
And the movable block is rotatably connected to the second rotary hole and can press the pressure foot rod downwards or lift the pressure foot rod upwards through the pressure foot spring.
In one embodiment, a driving sleeve is sleeved on the presser bar, the movable block is slidably connected in a second chute of the driving sleeve and can drive the driving sleeve to slide up and down along the presser bar, a pressure bar guide frame is fixedly arranged on the presser bar, and the presser spring is arranged between the driving sleeve and the pressure bar guide frame in a compression manner.
In one embodiment, a tight ring is fixedly arranged on the presser bar, and the driving sleeve is positioned between the tight ring and the presser spring.
In one embodiment, one end of the first sliding chute is open, and/or one end of the second sliding chute is open.
In one embodiment, the shifting block is provided as a threaded pin, and a part of the pin shaft of the threaded pin is screwed to the rack.
in one embodiment, a pressure bar bushing is further sleeved outside the pressure bar, the pressure bar bushing is fixed relative to the sewing machine shell, and the pressure bar is slidably arranged in an inner hole of the pressure bar bushing.
the utility model also provides a sewing machine, sewing machine include sewing machine presser foot actuating mechanism.
among the above-mentioned sewing machine presser foot actuating mechanism, can be according to the rotation of operating mode needs control motor and predetermine the angle to through the translation motion of rack with this corner transformation through rack and pinion transmission, through link mechanism control presser foot pole lift certain distance, wherein the power of control presser foot pole decline acts on the presser foot pole through pressure regulating spring. Therefore, the presser foot rod can be accurately controlled to lift for a certain distance, and the sewing quality and the sewing efficiency of the sewing machine are improved.
Drawings
FIG. 1 is a schematic view of a presser foot drive mechanism of a sewing machine;
FIG. 2 is a different angle view of FIG. 1;
FIG. 3 is a partial enlarged view of a presser foot drive mechanism of the sewing machine;
FIG. 4 is a schematic view of a drive sleeve in a presser foot drive mechanism of a sewing machine.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
referring to fig. 1-4, an embodiment of the present invention is a presser foot driving mechanism for a sewing machine, including:
The output end of the motor 1 is connected with a gear 2 and can drive the gear 2 to rotate by a preset angle;
A rack 3 which is engaged with the gear 2 and can move for a predetermined distance under the driving of the gear 2, wherein a shifting block 5 is arranged on the rack 3;
One end of the connecting rod mechanism is connected with the shifting block 5 in a sliding mode, so that the other end of the connecting rod mechanism can be lifted up or pressed down under the shifting of the shifting block 5;
And a presser bar 15, on which a presser spring 12 is sleeved, and one end of the link mechanism, which is far away from the sliding connection of the shifting block 5, can press down the presser bar 15 through the presser spring 12.
Wherein, motor 1 drives link mechanism through intermeshing's gear 2 and rack 3, can make the transmission more accurate, and is further, receives driven link mechanism and presser foot spring 12 effect, and link mechanism realizes presser foot pole 15 down through pressing presser foot spring 12 to supporting, and presser foot spring 12 plays the effect of buffering at the in-process of realizing presser foot pole 15 down, improves the security.
As shown in fig. 1 and fig. 2, the motor 1 can be a stepping motor or a servo motor, etc. and can realize the motor 1 of the accurate control corner, the motor 1 is fixed on the sewing machine casing, the output end of the motor 1 is matched with the gear 2, and the two are fixed through key connection, adopt this kind of connection mode, ensure the gear 2 to move with the output end of the motor 1 all the time in the rotation process of the motor 1, thereby ensure the accurate movement of the presser foot driving mechanism of the sewing machine, wherein, the output end side of the motor 1 is also provided with the rack 3 meshed with the gear 2 and the guide seat 4 connected with the rack 3, concretely, the guide seat 4 is provided with a chute along the movement direction of the rack 3, the rack 3 is matched with the guide seat 4 through the chute, and the motor 1 can drive the rack 3 to slide along the guide seat 4 through.
It should be noted that the key connection between the output end of the motor 1 and the gear 2 is selected in this embodiment, and in other embodiments, the output end of the motor 1 and the gear 2 may also adopt a connection manner such as welding, as long as the output end of the motor 1 and the gear 2 can move synchronously, which is not limited specifically.
referring to fig. 1 and 2, the link mechanism for transmission includes a rear lever 6, a link 7, a front lever 8, and a movable block 10.
Wherein, back lever 6 is similar "L" shape, be equipped with first switching hole 61 on the back lever 6, back lever 6 rotates through first switching hole 61 and sewing machine casing to be connected, still be equipped with spout 63 and second switching hole 62 respectively in the both sides of first switching hole 61, and spout 63, first switching hole 61, the setting of second switching hole 62 three collineation not, wherein, be equipped with shifting block 5 on the rack 3, the 5 partial structure of shifting block is arranged in spout 63, rack 3 is acted on with spout 63 through shifting block 5 when the motion, because spout 63, first switching hole 61, second switching hole 62 collineation not, so can drive back lever 6 and rotate around first switching hole 61 under the motion of rack 3.
further, shifting block 5 sets up to the screw thread round pin, and rack 3 cooperatees with spout 63 through the screw thread round pin, and for easy to assemble, the one end of spout 63 is equipped with the opening, and the screw thread portion of screw thread round pin is arranged in rack 3, screw thread round pin and 3 fixed connection of rack, and the screw thread round pin extends the opening of rack 3 and arranges in spout 63 through spout 63, and the screw thread round pin laminates mutually with spout 63 to guarantee accurate linkage between the two. The threaded pin is only selected in the embodiment, and in other embodiments, the shifting block 5 with other structures can be adopted as long as the transmission relationship can be successfully completed.
As shown in fig. 1, the front lever 8 is also similar to an "L" shape, a first shaft center 83 is provided on the front lever 8, the front lever 8 is rotatably connected with the sewing machine housing through the first shaft center 83, a first rotating hole 81 and a second rotating hole 82 are respectively provided on both sides of the first shaft center 83, wherein the first rotating hole 81 is connected with the connecting rod 7, and the second connecting hole 82 is rotatably connected with the movable block 10.
Specifically, the second coupling hole 62 is rotatably connected to one end of the connecting rod 7, the first rotation hole 81 is rotatably connected to the other end of the connecting rod 7, and under the action of the motor 1, the rear lever 6 rotating around the first coupling hole 61 drives the front lever 8 to rotate around the first axis 83 through the connecting rod 7, so that the front lever 8 can drive the movable block 10 rotatably connected to the second coupling hole 82 of the front lever 8.
The rear lever 6 and the front lever 8 are both L-shaped, which is also the embodiment of the present embodiment, in other embodiments, the rear lever 6 and the front lever 8 may also be in other shapes, as long as the rear lever 6, the connecting rod 7, the front lever 8 and the movable block 10 can realize linkage, and no specific limitation is made.
As shown in fig. 3 and 4, a driving sleeve 9 is disposed on the presser bar 15 of the sewing machine, the driving sleeve 9 is sleeved on the presser bar 15 and can move along the presser bar 15, a second sliding groove 91 is disposed on the driving sleeve 9, wherein the movable block 10 is slidably connected with the driving sleeve 9 through the second sliding groove 91, and the movable block 10 rotatably connected with the second connecting hole 82 is driven by the rotation of the front lever 8 around the first axis 83, so that the movable block 10 can drive the driving sleeve 9 to move along the presser bar 15.
The presser foot rod 15 is arranged in an inner hole of the presser foot bushing 14 in a sliding mode, the presser foot bushing 14 is fixed relative to the sewing machine shell, and when the presser foot rod 15 ascends or descends to achieve the pressure rising and pressure reducing of a presser foot, the presser foot bushing 14 ensures the presser foot rod 15 to move stably, so that the presser foot can be favorably and smoothly lifted and lowered.
the presser bar 15 is further provided with a tight ring 11, a presser spring 12 and a pressure bar guide 13, specifically, the tight ring 11, the driving sleeve 9, the presser spring 12 and the pressure bar guide 12 are sequentially arranged on the presser bar 15 along the axial direction of the presser bar 15, wherein the tight ring 11 and the pressure bar guide 13 are respectively fixedly connected with the presser bar 15, the driving sleeve 9 and the presser spring 12 are sleeved on the presser bar 15, and the driving sleeve 9 and the presser spring 12 can slide along the presser bar 15, when the driven driving sleeve 14 moves upwards along the presser bar 15, the driving sleeve 14 can act with the tight ring 11 fixed on the presser bar 15, the presser bar 15 is driven by the tight ring 11 to move upwards, so as to realize the loading of the presser, when the driving sleeve 9 moves downwards along the presser bar 15, the driving sleeve 9 acts on the presser spring 12, because the presser spring 12 abuts against the pressure bar guide 13, the driving sleeve 9 can drive the pressure bar guide 13 to move downwards through the presser spring 12, thereby driving the presser foot rod 15 to move downwards to realize material pressing.
It is worth to say that the motor 1 in the presser foot actuating mechanism of the sewing machine can be connected with control devices such as a single chip microcomputer and a microprocessor, and the rotating angle of the motor 1 can be defined by the control device according to sewing materials with different thicknesses, so that the material pressing force is changed to meet the requirements of sewing materials with different thicknesses, and the sewing quality is improved.
The driving process of the pressure foot rod descending is as follows:
Referring to fig. 1, the motor 1 rotates counterclockwise, the output end of the motor 1 drives the rack 3 to move downward through the gear 2, the threaded pin connected to the rack 3 interacts with the sliding groove 63, so as to drive the rear lever 6 to rotate clockwise around the first connecting hole 61, the other end of the rear lever 6 pushes the connecting rod 7, the connecting rod 7 drives the front lever 8 to rotate counterclockwise around the first axis 83, further drives the movable block 10 rotatably connected to the other end of the front lever 8 to move downward along the presser bar 15, because the movable block 10 is slidably connected to the driving sleeve 9, the front lever 8 drives the driving sleeve 9 to press the presser bar spring 12 downward, and the presser bar spring 12 interacts with the presser bar guide frame 13, so as to drive the presser bar 15 fixed to the presser bar guide frame 13 to move downward, thereby completing pressing.
the driving process of the pressure foot rod lifting is as follows:
referring to fig. 1, the output end of the motor 1 drives the gear 2 to rotate clockwise, the gear 2 drives the rack 3 engaged therewith to move upwards, further, the rack 3 drives the rear lever 6 to rotate anticlockwise around the first transfer hole 61 through the matching of the threaded pin and the chute 63, the other end of the rear lever 6 pulls the connecting rod 7, the connecting rod 7 pulls the front lever 8 to rotate clockwise around the first axis 83, thereby driving the driving sleeve 9 which is rotatably connected with the other end of the front lever 8 through the movable block 10 to move upwards along the presser bar 15, the driving sleeve 9 interacts with the fastening ring 11, the driving sleeve 9 drives the presser bar 15 to ascend through the fastening ring 11, and the lifting of the presser bar is completed.
It should be noted that the above directional terms are all described with reference to fig. 1, and in other embodiments, the motor 1, the gear 2, the rack 3 and the link mechanism are connected at different positions to generate different linkage effects, which is not limited in detail herein.
the utility model also provides a sewing machine, including above-mentioned sewing machine presser foot actuating mechanism.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. Sewing machine presser foot actuating mechanism, its characterized in that, presser foot actuating mechanism includes:
The output end of the motor is connected with a gear and can drive the gear to rotate by a preset angle;
The rack is meshed with the gear and can move for a preset distance under the driving of the gear, and a shifting block is arranged on the rack;
One end of the connecting rod mechanism is connected with the shifting block in a sliding mode, so that the other end of the connecting rod mechanism can be lifted up or pressed down under the shifting of the shifting block;
And one end of the connecting rod mechanism, which is far away from the sliding connection of the shifting block, can press the presser bar downwards through the presser spring.
2. A presser foot drive mechanism according to claim 1, further comprising a guide base, wherein a guide groove extending in a sliding direction of the rack is provided in the guide base, and the rack is slidably provided in the guide groove.
3. A presser foot drive mechanism of a sewing machine as claimed in claim 1, wherein said gear is keyed or welded to the output of the motor.
4. A presser foot drive mechanism for a sewing machine as claimed in claim 1, wherein said linkage mechanism comprises:
the rear lever is provided with a first switching hole and a second switching hole, and is rotatably connected to the sewing machine shell through the first switching hole, and the sliding groove and the second switching hole are respectively positioned on two sides of the first switching hole, which are not collinear;
A connecting rod, one end of which is rotatably connected to the second transfer hole;
the front lever is provided with a first axle center, a first rotary hole and a second rotary hole which are respectively positioned at two sides of the first axle center, the front lever is rotatably connected to the shell of the sewing machine through the first axle center, and the other end of the connecting rod is connected to the first rotary hole;
And the movable block is rotatably connected to the second rotary hole and can press the pressure foot rod downwards or lift the pressure foot rod upwards through the pressure foot spring.
5. A presser foot drive mechanism of a sewing machine as claimed in claim 4, wherein a drive sleeve is sleeved on the presser bar, the movable block is slidably connected in a second slide groove of the drive sleeve and can drive the drive sleeve to slide up and down along the presser bar, a presser bar guide is further fixedly arranged on the presser bar, and the presser foot spring is arranged between the drive sleeve and the presser bar guide in a compressed manner.
6. A presser foot drive mechanism according to claim 5, wherein a looper is fixedly attached to said presser bar, and said drive sleeve is located between said looper and said presser foot spring.
7. the presser foot drive mechanism of claim 5, wherein an end of said first runner is open and/or an end of said second runner is open and disposed.
8. The sewing machine presser foot drive mechanism of claim 1, wherein the paddle is provided as a threaded pin having a portion of a pin shaft thereof threadedly coupled to the rack.
9. The sewing machine presser foot drive mechanism of claim 1, wherein a presser bar bushing is further sleeved outside the presser bar, the presser bar bushing being fixed relative to the sewing machine housing, the presser bar being slidably disposed in an inner bore of the presser bar bushing.
10. a sewing machine characterized in that it comprises a sewing machine presser foot drive mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920016730.9U CN209759737U (en) | 2019-01-04 | 2019-01-04 | sewing machine presser foot actuating mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920016730.9U CN209759737U (en) | 2019-01-04 | 2019-01-04 | sewing machine presser foot actuating mechanism and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209759737U true CN209759737U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920016730.9U Active CN209759737U (en) | 2019-01-04 | 2019-01-04 | sewing machine presser foot actuating mechanism and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209759737U (en) |
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2019
- 2019-01-04 CN CN201920016730.9U patent/CN209759737U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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| CP03 | Change of name, title or address |