CN112226918A - Electronic middle presser foot mechanism of sewing machine - Google Patents
Electronic middle presser foot mechanism of sewing machine Download PDFInfo
- Publication number
- CN112226918A CN112226918A CN202011150974.XA CN202011150974A CN112226918A CN 112226918 A CN112226918 A CN 112226918A CN 202011150974 A CN202011150974 A CN 202011150974A CN 112226918 A CN112226918 A CN 112226918A
- Authority
- CN
- China
- Prior art keywords
- pressing rod
- presser foot
- pressing
- middle presser
- sewing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 150
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005489 elastic deformation Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The application relates to the technical field of sewing machine equipment, in particular to an electronic middle presser foot mechanism of a sewing machine, which comprises a machine shell, a middle presser foot positioned below the machine shell, a connecting rod structure connected with the middle presser foot and a driving structure driving the connecting rod structure to move; the connecting rod structure comprises a pressing rod which is arranged in the machine shell in a penetrating way and is connected with the middle pressing foot, a middle pressing foot pressing rod which is in sliding fit with the pressing rod, a pressing rod outer spring which drives the pressing rod to move towards the direction far away from the middle pressing foot, and elastic pieces which are respectively connected with the pressing rod and the middle pressing foot pressing rod; one end of an outer spring of the pressing rod is connected with the pressing rod, the other end of the outer spring of the pressing rod is connected with the shell, and the middle presser foot pressing rod is connected with the driving structure; when the middle presser foot meets a thicker fabric, the middle presser foot pressing rod can drive the elastic piece to generate elastic deformation so as to achieve the protection effect on the connecting rod structure, reduce the damage of the pressing rod and further reduce the failure rate of the sewing machine.
Description
Technical Field
The application relates to the field of sewing machine equipment, in particular to an electronic middle presser foot mechanism of a sewing machine.
Background
Sewing machines are currently machines which use one or more sewing threads to form one or more stitches in the material to interlace or stitch one or more layers of the 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.
The presser foot mechanism in the sewing machine on the current market is divided into a mechanical type and an electronic type, wherein the height and the stroke of the mechanical presser foot need to be manually adjusted, and the presser foot mechanism is fixed and unchangeable in the sewing process after being adjusted, cannot be automatically adjusted along with the thickness of the sewing fabric, and cannot be used for sewing fabrics with various thicknesses; the electronic type is to drive the middle presser foot to jump up and down through a stepping motor and a connecting rod structure so as to realize the function of automatically adjusting the height and the stroke of the presser foot during sewing.
With respect to the related art in the above, the inventors consider that: according to the thickness of the fabric, the pressing mechanism can be preset in a motor system, in the preset motor system, the jumping distance of the middle pressing foot is the same every time, the position of the fabric part can be inconsistent with the preset fabric thickness, when the fabric larger than the preset value is encountered, the motor continues to drive the middle pressing foot to press downwards, and because the connecting rod structure in the electronic pressing foot mechanism is in rigid connection, the motor continues to rotate, the connecting rod structure is easy to damage.
Disclosure of Invention
In order to play the cushioning effect to link structure under the circumstances that the surface fabric is thicker, reduce link structure's damage, this application provides presser foot mechanism in sewing machine's electron.
The application provides a presser foot mechanism in sewing machine's electron adopts following technical scheme:
an electronic middle presser foot mechanism of a sewing machine comprises a machine shell, a middle presser foot positioned below the machine shell, a connecting rod structure connected with the middle presser foot, and a driving structure driving the connecting rod structure to move; the connecting rod structure comprises a pressing rod which is arranged in the machine shell in a penetrating way and is connected with the middle pressing foot, a middle pressing foot pressing rod which is in sliding fit with the pressing rod, a pressing rod outer spring which drives the pressing rod to move towards the direction far away from the middle pressing foot, and elastic pieces which are respectively connected with the pressing rod and the middle pressing foot pressing rod; one end of an outer spring of the pressing rod is connected with the pressing rod, the other end of the outer spring of the pressing rod is connected with the machine shell, and the middle pressing foot pressing rod is connected with the driving structure.
By adopting the technical scheme, the working state of the driving structure is changed, so that the middle presser foot pressing rod, the elastic piece, the pressing rod and the middle presser foot are driven to vertically jump, and the sewing work of the fabric is finished; when the middle presser foot meets a thick fabric, the pressing rod cannot move downwards any more, and the driving structure continues to keep pressing action, at the moment, the middle presser foot pressing rod can drive the elastic piece to generate elastic deformation, the pressure applied to the pressing rod by the driving mechanism is buffered, a protection effect is realized on the connecting rod structure, the damage of the pressing rod is reduced, the failure rate of the sewing machine is further reduced, and the working efficiency of the sewing machine is ensured; on the other hand, due to the existence of the elastic piece, the noise generated in the sewing process of the fabric is lower, and the movement of the middle presser foot at the thickness connection part of the fabric is more stable.
Preferably, the elastic part is a compression bar inner spring, one end of the compression bar inner spring is connected to the middle compression bar, and the other end of the compression bar inner spring is connected to the compression bar.
Through adopting above-mentioned technical scheme, compress tightly the pole inner spring and have higher elastic limit, fatigue limit, impact toughness, and simple structure, can play fine guard action to compressing tightly the pole.
Preferably, the upper end face of the pressing rod is provided with a sliding groove along the vertical direction, the middle pressing foot pressing rod is connected in the sliding groove in a sliding mode, one end of a spring in the pressing rod is connected to the bottom of the sliding groove, and the other end of the spring is connected to the lower end of the middle pressing foot pressing rod.
By adopting the technical scheme, the pressing rod is sleeved on the middle pressing foot pressing rod, so that the limiting effect of the middle pressing foot pressing rod is achieved, and the connection strength of the pressing rod and the middle pressing foot pressing rod is improved; on the other hand, the occupied space of the middle presser foot pressing rod can be reduced, so that the connecting rod structure is more compact.
Preferably, the casing is provided with a limit groove along the vertical direction, and the pressing rod is connected with the limit groove in a sliding manner through the pressing rod.
By adopting the technical scheme, the compression rod is limited, and the motion stability of the compression rod is improved; on the other hand, the pressing rod can not rotate, so that the completion of sewing work is influenced.
Preferably, the driving structure comprises a driving motor arranged on the machine shell, a middle presser foot cam connected with an output shaft of the driving motor, and an abutting piece abutted against the outer wall of the middle presser foot cam, and the abutting piece is connected to the upper end of the middle presser foot pressing rod.
By adopting the technical scheme, the middle presser foot cam is driven to rotate by changing the working state of the driving motor, the abutting piece drives the middle presser foot pressing rod to move, and finally the middle presser foot is driven to press downwards; and under the combined action of the outer spring of the pressing rod and the inner spring of the pressing rod, the pressing rod of the middle pressing foot is driven to be always connected with the abutting part, and the up-and-down jumping action of the middle pressing foot is completed under the coordination of the cam of the middle pressing foot.
Preferably, the abutting member comprises a supporting base mounted at the upper end of the middle presser foot, and an abutting wheel rotatably connected to the supporting base and contacting with the outer wall of the cam of the middle presser foot.
By adopting the technical scheme, the middle presser foot cam drives the butting wheel to move up and down back and forth along the vertical direction, so that the middle presser foot is driven to jump up and down; the butt joint wheel can rotate with the supporting seat in the contact process of the middle presser foot cam, so that the friction between the butt joint wheel and the middle presser foot is reduced, the abrasion of the butt joint wheel is reduced, and the service life of the butt joint wheel is prolonged.
Preferably, the casing is provided with a linear guide rail capable of moving along the vertical direction, and the support seat is installed on the linear guide rail.
Through adopting above-mentioned technical scheme, well presser foot cam can produce a yawing force to the abutment wheel, and supporting seat and linear guide sliding connection improve the stability that the supporting seat reciprocated along vertical direction.
Preferably, the middle presser cam comprises an eccentric block arranged at one end of an output shaft of the driving motor, the outer wall of the eccentric block is abutted against the circumferential side wall of the abutting wheel, and an anti-collision block capable of contacting with the shell is arranged on the output shaft of the driving motor.
By adopting the technical scheme, when the sewing machine normally works, the driving motor drives the eccentric block to rotate back and forth, so that the eccentric block extrudes and releases the abutting wheel, the pressing rod moves up and down along the vertical direction, the space occupied by the eccentric block on the sewing machine is smaller, and the structure is more compact; meanwhile, when the anti-collision block normally works, the anti-collision block cannot be in contact with the shell, and only when a fault occurs, the anti-collision block can collide with the shell, so that the condition that the eccentric block collides with other parts of the sewing machine is reduced.
Preferably, the casing is provided with a proximity switch electrically connected with the driving motor, and an output shaft of the driving motor is provided with an induction block matched with the proximity switch for use.
Through adopting above-mentioned technical scheme, when sewing machine offered the operation, proximity switch was through the position of this response piece of response to judge the position of current eccentric block, and then made driving motor return to zero, ordered about the eccentric block and got back to initial position.
Drawings
Fig. 1 is an overall schematic diagram of an embodiment of the present application.
Fig. 2 is an exploded view showing the structure of the electronic center presser, with the housing hidden.
Figure 3 is an exploded view used to show the abutment.
Fig. 4 is an enlarged view of a portion a in fig. 1, which is used for illustrating the structural position relationship of the present application.
Fig. 5 is a partial schematic view showing the hold down bar joint, with the drive mechanism hidden.
Fig. 6 is a sectional view for showing the spring in the hold-down bar.
Fig. 7 is an enlarged view of a portion B of fig. 6 for showing the guide round bar.
Description of reference numerals: 1. a housing; 11. a limiting groove; 12. a bearing seat; 2. a middle presser foot; 3. a connecting rod structure; 31. a hold down bar; 311. a sliding groove; 32. a middle presser foot pressure lever; 321. a first guide slope; 322. a guide round bar; 323. a second guide slope; 33. a compression rod outer spring; 34. a spring in the compression bar; 4. a compression rod joint; 41. a connecting portion; 42. a first clamping part; 43. a second clamping part; 44. a connecting bolt; 5. a drive motor; 51. a middle presser eccentric wheel; 511. installing a sleeve; 512. an eccentric block; 6. an abutting member; 61. a supporting seat; 62. a butting wheel; 621. a compression bar pin shaft; 622. a split washer; 63. a yielding groove; 64. a connecting plate; 7. a linear guide rail; 71. a guide bar; 72. a guide seat; 73. a pressure bar guide rail mounting plate; 731. a vertical mounting plate; 732. a horizontal mounting plate; 8. an anti-collision block; 9. a proximity switch; 91. an induction block; 92. cushion blocks; 10. the compression rod shaft sleeve.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
The embodiment of the application discloses presser foot mechanism in sewing machine's electron. Referring to fig. 1 and 2, the pressing device comprises a machine shell 1, a middle pressing foot 2 located below the machine shell 1, a connecting rod structure 3 connected with the upper end of the middle pressing foot 2, and a driving structure for driving the connecting rod structure 3 to move downwards, in the embodiment, the driving structure comprises a driving motor 5 connected to one side of the machine shell 1, a middle pressing foot cam connected with an output shaft of the driving motor 5, and a butting part 6 butted against the outer wall of the middle pressing foot cam, the driving motor 5 is connected with the machine shell 1 in a bolt mode, the output shaft of the driving motor 5 penetrates through the machine shell 1 and enters the interior of the machine shell 1, a bearing seat 12 in running fit with the output shaft of the driving motor 5 is installed in the machine shell 1, the bearing seat 12 is connected with the machine shell 1 in a bolt.
Referring to fig. 2 and 3, the abutting part 6 includes a supporting seat 61 and an abutting wheel 62 rotatably connected to the supporting seat 61, the connecting rod structure 3 drives the circumferential side wall of the abutting wheel 62 to abut against the outer wall of the middle presser cam all the time, the connecting rod structure 3 is connected with the lower side of the supporting seat 61, the upper end surface of the supporting seat 61 is provided with a yielding groove 63 along the vertical direction, the abutting wheel 62 is embedded in the yielding groove 63, and the abutting wheel 62 is in clearance fit with the yielding groove 63 to limit the abutting wheel 62; in the embodiment, the abutment wheel 62 includes, but is not limited to, a bearing, and a peripheral side wall of the abutment wheel 62 abuts against an outer wall of the middle presser cam.
In the embodiment, the abutting wheel 62 is connected with the supporting seat 61 through a pressing rod pin 621, the pressing rod pin 621 is in running fit with the supporting seat 61 through split rings 622 respectively clamped on one ends of the pressing rod pin 621, and the extending direction of the pressing rod pin 621 is the same as the direction of the output shaft of the driving motor 5, so that the abutting wheel 62 is convenient to mount and dismount; on the other hand, when the driving motor 5 is started, the middle presser cam drives the abutment wheel 62, the support seat 61, the link structure 3 and the middle presser 2 to move downwards, and at this time, the abutment wheel 62 rotates when contacting with the middle presser cam, so as to reduce the friction damage between the abutment wheel 62 and the middle presser cam.
Referring to fig. 2 and 4, in the embodiment, in order to make the structure of the sewing machine more compact, the middle presser cam is a middle presser eccentric wheel 51, and the middle presser eccentric wheel 51 comprises a mounting sleeve 511 mounted on one end of the output shaft of the driving motor 5, and an eccentric block 512 integrally formed with the mounting sleeve 511, the central axis of the mounting sleeve 511 has a certain distance with the central axis of the eccentric block 512, so that when the mounting sleeve 511 rotates along with the output shaft of the driving motor 5, the outer wall of the eccentric block 512 drives the abutting wheel 62 to move up and down along the vertical direction; in the embodiment, the driving motor 5 is a servo motor to control the eccentric block 512 to rotate back and forth, so as to reduce the space required by the rotation of the eccentric block 512; the shape of the eccentric block 512 is two thirds of a circle, so that the material is saved, the occupied space required by the rotation of the eccentric block 512 is less, and the structural compactness of the sewing machine is further improved; in an embodiment, two opposite sides of the eccentric block 512 are in clearance fit with two opposite sides of the abdicating groove 63, so that the supporting seat 61 can also limit the eccentric block 512.
Because some other parts for finishing the sewing work are arranged in the machine shell 1, if the driving motor 5 breaks down, the eccentric block 512 is easy to collide with the parts, so that the parts are damaged, in the embodiment, the anti-collision block 8 capable of contacting with the machine shell 1 is fixedly connected to the output shaft of the driving motor 5, when the sewing machine normally works, the anti-collision block 8 cannot collide with the machine shell 1, when the driving motor 5 breaks down, the anti-collision block 8 can collide with the machine shell 1 to limit the rotation of the eccentric block 512, and the condition that the eccentric block 512 collides with other parts in the machine shell 1 is reduced; in order to reduce the collision wear of the impact-proof block 8 and the housing 1, in the embodiment, the corners of the impact-proof block 8 are chamfered or beveled.
When the sewing machine is restarted each time, the driving motor 5 needs to be adjusted to a return-to-zero state, so that the driving motor 5 can drive the eccentric block 512 to do back-and-forth circulating motion in a specified motion range without colliding with other parts, a proximity switch 9 electrically connected with the driving motor 5 is arranged on the machine shell 1, the proximity switch 9 is connected with the machine shell 1 through a cushion block 92, the proximity switch 9 is connected with the cushion block 92 through a screw mode, and the cushion block 92 is connected with the machine shell 1 through a bolt mode; meanwhile, the anti-collision block 8 is provided with the sensing block 91 matched with the proximity switch 9 for use, the sensing block 91 is connected with one side of the anti-collision block 8 through a bolt, the proximity switch 9 senses the position of the sensing block 91 and then adjusts the position of the eccentric block 512 through the driving motor 5, so that the eccentric block 512 automatically returns to the initial position, and the operation of a user is reduced.
The machine shell 1 is further provided with a linear guide rail 7 capable of moving in the vertical direction, and the support seat 61 is installed on the linear guide rail 7 to counteract a lateral force generated by the eccentric block 512 when rotating against the abutment wheel 62, so that the support seat 61 drives the connecting rod structure 3 to move up and down in the vertical direction with better stability; in the embodiment, the guide bar 71 is connected to the cabinet 1 by a press bar rail mounting plate 73, the press bar rail mounting plate 73 includes a vertical mounting plate 731 extending in a vertical direction, and a horizontal mounting plate 732 integrally formed on a side of the vertical mounting plate 731 away from the guide bar 71, and the horizontal mounting plate 732 is connected to the cabinet 1 by means of bolts. The guide bar 71 is connected to the vertical mounting plate 731 by means of bolts.
Referring to fig. 2 and 5, in order to reduce the damage of the link structure 3 when the fabric is thick, the link structure 3 includes a middle presser foot pressing rod 32 connected to the lower end of the supporting seat 61, a pressing rod 31 slidably fitted to the middle presser foot pressing rod 32, a pressing rod outer spring 33 driving the pressing rod 31 to move in a direction away from the middle presser foot 2, and elastic members respectively connected to the pressing rod 31 and the middle presser foot pressing rod 32, one end of the pressing rod outer spring 33 is connected to the upper end of the pressing rod 31, the other end is connected to the casing 1, and the pressing rod outer spring 33 is sleeved on the pressing rod 31, so that the pressing rod 31 exerts an upward force on the elastic member, the middle presser foot pressing rod 32, and the supporting seat 61, and the circumferential side wall of the abutting wheel 62 is always abutted against the outer wall.
When the fabric is sewn, the output shaft of the driving motor 5 rotates forwards and backwards to drive the eccentric block 512 to rotate back and forth, so that the eccentric block 512 rotates forwards and backwards to extrude or release the abutting wheel 62, and further the middle presser foot 2 is driven to move up and down to finish the sewing work of the fabric; when the middle presser foot 2 encounters a thick fabric, the eccentric block 512 is driven by the driving motor 5 to continue rotating, at the moment, the middle presser foot pressing rod 32 extrudes the elastic part of the pressing rod, so that the elastic part continues to deform, and at the moment, the middle presser foot pressing rod 32 can continue to move downwards, so that the damage to the connecting rod structure 3 is reduced, and the failure rate of the sewing machine is reduced; meanwhile, due to the existence of the elastic piece, the noise generated in the sewing process of the fabric is lower, and the movement of the middle presser foot 2 at the thickness connection part of the fabric is more stable.
Referring to fig. 4 and 5, when the middle presser foot 2 contacts the fabric, the pressing rod 31 may rotate along with the movement of the fabric, which causes a problem in the sewing of the fabric, so the upper end of the pressing rod 31 is fixedly connected with the pressing rod joint 4, and the casing 1 is provided with the limit groove 11 for the pressing rod joint 4 to slide along the vertical direction.
The pressing rod joint 4 comprises a U-shaped connecting portion 41 and clamping portions integrally formed at one end of the connecting portion 41, in the embodiment, the clamping portions are divided into a first clamping portion 42 slidably connected in the limiting groove 11 and a second clamping portion 43 for facilitating the distinction, the pressing rod 31 is sleeved on the connecting portion 41, the length of the first clamping portion 42 is larger than that of the second clamping portion 43, in order to fix the pressing rod joint 4 and the pressing rod 31, the first clamping portion 42 is connected with the second clamping portion 43 through a connecting piece, in the embodiment, the connecting piece is a connecting bolt 44, one end of the connecting bolt 44 penetrates through one side of the first clamping portion 42 and the other side of the first clamping portion 42, then the connecting bolt 44 is in threaded connection with the second clamping portion 43, when one side of a nut of the connecting bolt 44 abuts against the first clamping portion 42, the connecting bolt 44 is continuously rotated to drive the second clamping portion 43 to deform with the first clamping portion 42, the two are close to each other, so that the clamping and fixing purposes of the pressing rod 31 are realized; when the eccentric block 512 drives the supporting seat 61 to move up and down along the vertical direction, the first clamping portion 42 is driven to be slidably connected to the limiting groove 11, so that the rotation phenomenon of the pressing rod 31 can be reduced.
In the embodiment, the upper end of the external spring 33 of the pressing rod abuts against the lower end face of the joint 4 of the pressing rod, the lower side of the casing 1 is provided with the shaft sleeve 10 of the pressing rod, and the lower end of the external spring 33 of the pressing rod abuts against the upper end face of the shaft sleeve 10 of the pressing rod, so that a user can conveniently install and detach the external spring 33 of the pressing rod; the compressing rod shaft sleeve 10 penetrates through the lower side wall of the machine shell 1, the compressing rod 31 is in sliding fit with the compressing rod shaft sleeve 10, the compressing rod shaft sleeve 10 can be connected with the machine shell 1 in a welding mode, and the compressing rod shaft sleeve 10 is low in hardness and good in wear resistance, so that the abrasion between the compressing rod 31 and the machine shell 1 can be reduced, and meanwhile, the shaking phenomenon of the compressing rod 31 can also be reduced.
Referring to fig. 6 and 7, in the embodiment, a sliding groove 311 is formed in the upper end surface of the pressing rod 31 along the vertical direction, one end of the middle pressing rod 32 is slidably connected in the sliding groove 311, the other end of the middle pressing rod is connected with the supporting seat 61 by a bolt (as shown in fig. 4), the elastic member is located in the sliding groove 311, in the embodiment, the elastic member is the spring 34 in the pressing rod, and during manufacturing, according to actual needs, the elastic member may also be a part with elasticity, such as a cushion pad; one end of the compression bar inner spring 34 is fixedly connected to the bottom of the sliding groove 311, and the other end is fixedly connected to the lower end of the middle presser bar 32, and during installation, the two ends of the compression bar inner spring 34 can be respectively abutted to the bottom of the sliding groove 311 and the lower end of the middle presser bar 32 according to actual requirements.
In order to facilitate the connection between the middle presser foot pressing rod 32 and the pressing rod 31, a first guide inclined surface 321 capable of abutting against the opening of the pressing rod 31 is arranged at the edge of the lower end of the middle presser foot pressing rod 32; in order to facilitate the connection between the inner spring 34 of the pressing rod and the middle pressing foot pressing rod 32, in the embodiment, a guiding round rod 322 is integrally formed at the lower end of the middle pressing foot pressing rod 32, the cross-sectional area of the guiding round rod 322 is smaller than that of the middle pressing foot pressing rod 32, and a second guiding inclined surface 323 is arranged at the edge of the lower end surface of the guiding round rod 322, so that an installer can conveniently sleeve the inner spring 34 of the pressing rod on the guiding round rod 322.
The implementation principle of presser foot mechanism in sewing machine's electron of this application embodiment does: when preparing to sew the surface fabric, proximity switch 9 under the cooperation of response piece 91, rotates eccentric block 512 to initial position through driving motor 5, then driving motor 5's output shaft rotates, orders about eccentric block 512 and extrudes or relaxs butt-joint wheel 62, drives well presser foot 2 and reciprocates, accomplishes the sewing work to the surface fabric.
When meeting thicker surface fabric, well presser foot 2 supports the surface fabric tightly, and the compression bar 31 can't move down, and at this moment, compression bar inner spring 34 receives the extrusion of well presser foot depression bar 32 and takes place deformation for eccentric block 512 can continue to rotate along original orbit, reduces the damage to compression bar 31, simultaneously, in sewing in-process noise abatement's production.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a presser foot mechanism in sewing machine's electron, includes casing (1), is located presser foot (2) in casing (1) below, its characterized in that: the middle presser foot mechanism further comprises a connecting rod structure (3) connected with the middle presser foot (2) and a driving structure driving the connecting rod structure (3) to move; the connecting rod structure (3) comprises a pressing rod (31) which is arranged in the shell (1) in a penetrating mode and connected with the middle presser foot (2), a middle presser foot pressing rod (32) in sliding fit with the pressing rod (31), a pressing rod outer spring (33) driving the pressing rod (31) to move towards the direction far away from the middle presser foot (2), and elastic pieces connected to the pressing rod (31) and the middle presser foot pressing rod (32) respectively; one end of the pressing rod outer spring (33) is connected with the pressing rod (31), the other end of the pressing rod outer spring is connected with the machine shell (1), and the middle pressing foot pressing rod (32) is connected with the driving structure.
2. The electronic presser foot mechanism of sewing machine according to claim 1, characterized in that: the elastic piece is a pressing rod inner spring (34), one end of the pressing rod inner spring (34) is connected to the middle pressing rod (32), and the other end of the pressing rod inner spring is connected to the pressing rod (31).
3. The electronic presser foot mechanism of sewing machine according to claim 1, characterized in that: the upper end face of the pressing rod (31) is provided with a sliding groove (311) along the vertical direction, the middle presser foot pressing rod (32) is connected in the sliding groove (311) in a sliding mode, one end of a spring (34) in the pressing rod is connected to the bottom of the sliding groove (311), and the other end of the spring is connected to the lower end of the middle presser foot pressing rod (32).
4. The electronic presser foot mechanism of sewing machine according to claim 1, characterized in that: casing (1) is equipped with spacing groove (11) along vertical direction, compressing tightly pole (31) through compressing tightly pole joint (4) with spacing groove (11) sliding connection.
5. The electronic presser foot mechanism of sewing machine according to claim 1, characterized in that: the driving structure comprises a driving motor (5) arranged on the machine shell (1), a middle presser foot cam connected with an output shaft of the driving motor (5), and an abutting piece (6) abutted against the outer wall of the middle presser foot cam, wherein the abutting piece (6) is connected to the upper end of the middle presser foot pressing rod (32).
6. The electronic presser foot mechanism of sewing machine according to claim 5, wherein: the abutting piece (6) comprises a supporting seat (61) arranged at the upper end of the middle presser foot (2) and an abutting wheel (62) which is rotatably connected to the supporting seat (61) and is in contact with the outer wall of the cam of the middle presser foot.
7. The electronic presser foot mechanism of sewing machine according to claim 6, wherein: the motor shell (1) is provided with a linear guide rail (7) capable of moving in the vertical direction, and the supporting seat (61) is installed on the linear guide rail (7).
8. The electronic presser foot mechanism of sewing machine according to claim 7, wherein: the middle presser foot cam comprises an eccentric block (512) arranged at one end of an output shaft of the driving motor (5), the outer wall of the eccentric block (512) is abutted against the peripheral side wall of the abutting wheel (62), and an anti-collision block (8) capable of contacting with the shell (1) is arranged on the output shaft of the driving motor (5).
9. The electronic presser foot mechanism of sewing machine according to claim 5, wherein: the motor is characterized in that a proximity switch (9) electrically connected with the driving motor (5) is arranged on the shell (1), and an induction block (91) matched with the proximity switch (9) for use is arranged on an output shaft of the driving motor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011150974.XA CN112226918B (en) | 2020-10-24 | 2020-10-24 | Electronic middle presser foot mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011150974.XA CN112226918B (en) | 2020-10-24 | 2020-10-24 | Electronic middle presser foot mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112226918A true CN112226918A (en) | 2021-01-15 |
| CN112226918B CN112226918B (en) | 2022-05-03 |
Family
ID=74109560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011150974.XA Active CN112226918B (en) | 2020-10-24 | 2020-10-24 | Electronic middle presser foot mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112226918B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737403A (en) * | 2021-09-22 | 2021-12-03 | 浙江多乐缝纫机有限公司 | Presser foot structure and have its sewing machine |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3495560A (en) * | 1968-08-14 | 1970-02-17 | Singer Co | Presser device for sewing machines |
| JPH05115641A (en) * | 1991-06-01 | 1993-05-14 | Brother Ind Ltd | Sewing machine presser foot device |
| JPH078655A (en) * | 1990-06-29 | 1995-01-13 | Gm Pfaff Ag | Fabric holding-down apparatus for stitch forming machine |
| CN1163326A (en) * | 1996-01-30 | 1997-10-29 | 杜尔科普·阿德乐股份有限公司 | Sewing machine with presser foot cloth feeder |
| CN1164877A (en) * | 1994-07-20 | 1997-11-12 | 株式会社马吕段 | Sewing machine |
| JP2000233088A (en) * | 1999-02-12 | 2000-08-29 | Kh:Kk | Presser foot pressure adjusting mechanism of sewing machine and presser foot adjusting screw unit for use in it |
| CN2739213Y (en) * | 2004-07-02 | 2005-11-09 | 陈茂选 | Sewing machine synchronous presser foot mechanism |
| CN103352332A (en) * | 2013-06-26 | 2013-10-16 | 西安标准工业股份有限公司 | Electronic back-pulling mechanism |
| CN203333976U (en) * | 2013-06-26 | 2013-12-11 | 西安标准工业股份有限公司 | Pressure foot and cloth pulling wheel combined mechanism with inner pressing rod and outer pressing rod |
| CN103757826A (en) * | 2013-12-30 | 2014-04-30 | 张章生 | Sewing machine and flexible medium presser foot driving mechanism |
| CN104294486A (en) * | 2014-09-30 | 2015-01-21 | 浙江理工大学 | Device and method for detecting pressure of presser foot of sewing machine |
| CN204162881U (en) * | 2014-09-18 | 2015-02-18 | 浙江宝石机电股份有限公司 | A kind of presser foot lifting device of Sewing machines |
| CN105463709A (en) * | 2015-12-23 | 2016-04-06 | 浙江美机缝纫机有限公司 | Down-proof sewing machine intermediate presser mechanism |
| CN106757826A (en) * | 2016-12-22 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of hold-down gear of sewing-machine foot |
| CN107164884A (en) * | 2017-06-27 | 2017-09-15 | 拓卡奔马机电科技有限公司 | A kind of middle presser foot device of sewing machine and sewing machine |
| CN207376221U (en) * | 2017-08-10 | 2018-05-18 | 西安标准工业股份有限公司 | A kind of sewing machine adjusts foot pressure device |
| CN207484032U (en) * | 2017-11-30 | 2018-06-12 | 苏州翰德利机电科技有限公司 | The fabric thickness control device of sewing machine |
| CN207878036U (en) * | 2017-10-25 | 2018-09-18 | 上海卓佑实业有限公司 | A kind of presser foot lifter control device of sewing machine |
| CN109183288A (en) * | 2018-09-29 | 2019-01-11 | 浙江杰克智能缝制科技有限公司 | A kind of cloth-pressing device and sewing machine of sewing machine |
| CN109281073A (en) * | 2018-11-16 | 2019-01-29 | 杰克缝纫机股份有限公司 | A sewing machine and its presser foot lifting device |
| CN209098940U (en) * | 2018-10-24 | 2019-07-12 | 拓卡奔马机电科技有限公司 | The middle presser foot device and sewing machine of use in sewing machine |
| CN209178611U (en) * | 2018-11-30 | 2019-07-30 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine and automatic needle-foot-lifting mechanism |
-
2020
- 2020-10-24 CN CN202011150974.XA patent/CN112226918B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3495560A (en) * | 1968-08-14 | 1970-02-17 | Singer Co | Presser device for sewing machines |
| JPH078655A (en) * | 1990-06-29 | 1995-01-13 | Gm Pfaff Ag | Fabric holding-down apparatus for stitch forming machine |
| JPH05115641A (en) * | 1991-06-01 | 1993-05-14 | Brother Ind Ltd | Sewing machine presser foot device |
| CN1164877A (en) * | 1994-07-20 | 1997-11-12 | 株式会社马吕段 | Sewing machine |
| CN1163326A (en) * | 1996-01-30 | 1997-10-29 | 杜尔科普·阿德乐股份有限公司 | Sewing machine with presser foot cloth feeder |
| JP2000233088A (en) * | 1999-02-12 | 2000-08-29 | Kh:Kk | Presser foot pressure adjusting mechanism of sewing machine and presser foot adjusting screw unit for use in it |
| CN2739213Y (en) * | 2004-07-02 | 2005-11-09 | 陈茂选 | Sewing machine synchronous presser foot mechanism |
| CN103352332A (en) * | 2013-06-26 | 2013-10-16 | 西安标准工业股份有限公司 | Electronic back-pulling mechanism |
| CN203333976U (en) * | 2013-06-26 | 2013-12-11 | 西安标准工业股份有限公司 | Pressure foot and cloth pulling wheel combined mechanism with inner pressing rod and outer pressing rod |
| CN103757826A (en) * | 2013-12-30 | 2014-04-30 | 张章生 | Sewing machine and flexible medium presser foot driving mechanism |
| CN204162881U (en) * | 2014-09-18 | 2015-02-18 | 浙江宝石机电股份有限公司 | A kind of presser foot lifting device of Sewing machines |
| CN104294486A (en) * | 2014-09-30 | 2015-01-21 | 浙江理工大学 | Device and method for detecting pressure of presser foot of sewing machine |
| CN105463709A (en) * | 2015-12-23 | 2016-04-06 | 浙江美机缝纫机有限公司 | Down-proof sewing machine intermediate presser mechanism |
| CN106757826A (en) * | 2016-12-22 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of hold-down gear of sewing-machine foot |
| CN107164884A (en) * | 2017-06-27 | 2017-09-15 | 拓卡奔马机电科技有限公司 | A kind of middle presser foot device of sewing machine and sewing machine |
| CN207376221U (en) * | 2017-08-10 | 2018-05-18 | 西安标准工业股份有限公司 | A kind of sewing machine adjusts foot pressure device |
| CN207878036U (en) * | 2017-10-25 | 2018-09-18 | 上海卓佑实业有限公司 | A kind of presser foot lifter control device of sewing machine |
| CN207484032U (en) * | 2017-11-30 | 2018-06-12 | 苏州翰德利机电科技有限公司 | The fabric thickness control device of sewing machine |
| CN109183288A (en) * | 2018-09-29 | 2019-01-11 | 浙江杰克智能缝制科技有限公司 | A kind of cloth-pressing device and sewing machine of sewing machine |
| CN209098940U (en) * | 2018-10-24 | 2019-07-12 | 拓卡奔马机电科技有限公司 | The middle presser foot device and sewing machine of use in sewing machine |
| CN109281073A (en) * | 2018-11-16 | 2019-01-29 | 杰克缝纫机股份有限公司 | A sewing machine and its presser foot lifting device |
| CN209178611U (en) * | 2018-11-30 | 2019-07-30 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine and automatic needle-foot-lifting mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737403A (en) * | 2021-09-22 | 2021-12-03 | 浙江多乐缝纫机有限公司 | Presser foot structure and have its sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112226918B (en) | 2022-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109487454B (en) | Presser foot device is lifted to sewing machine's trimming | |
| CN101225589A (en) | Presser foot drive structure of embroidery machine | |
| CN112226918B (en) | Electronic middle presser foot mechanism of sewing machine | |
| US5590614A (en) | Sewing machine | |
| CN1037366C (en) | sewing machine | |
| CN110565288B (en) | Multifunctional mixed embroidery machine | |
| CN1619041A (en) | Metal plate duplex supplying device for embroidery machine | |
| CN212404468U (en) | Embroidery machine head for thick material embroidery and embroidery machine | |
| CN111705444A (en) | Independent presser foot transmission mechanism, embroidery machine head transmission mechanism and computerized embroidery machine | |
| CN215560395U (en) | Leather cutting device convenient for positioning for outdoor shoes | |
| CN221460672U (en) | Overedger | |
| CN210886520U (en) | Multifunctional mixed embroidery machine | |
| CN111501234B (en) | Improved structure of embroidery machine head after shuttle box height is reduced and embroidery machine | |
| CN222064856U (en) | A presser foot mechanism for a lockstitch sewing machine | |
| JPH07328258A (en) | Flat sewing machine provided with up-feeding mechanism | |
| CN221052142U (en) | Machine head of embroidery machine and embroidery machine | |
| CN221398286U (en) | Middle presser foot device and template machine | |
| CN114960054B (en) | A trimming device for sewing machine and sewing machine | |
| CN222666231U (en) | Presser foot capable of switching pressure and sewing machine | |
| CN222715575U (en) | Anti-deformation overlock machine | |
| CN101191276A (en) | Blind seam shoulder pad sewing machine | |
| CN223017174U (en) | Machine head and embroidery machine | |
| CN220789023U (en) | Automatic presser foot equipment | |
| CN214882174U (en) | Presser foot lifting mechanism of sewing machine | |
| CN218893822U (en) | Sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |