CN215440952U - Sewing machine with backstitch control mechanism - Google Patents
Sewing machine with backstitch control mechanism Download PDFInfo
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- CN215440952U CN215440952U CN202120744658.9U CN202120744658U CN215440952U CN 215440952 U CN215440952 U CN 215440952U CN 202120744658 U CN202120744658 U CN 202120744658U CN 215440952 U CN215440952 U CN 215440952U
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- backstitch
- ejector rod
- magnetic induction
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- sewing machine
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Abstract
The utility model relates to the technical field of sewing equipment, and discloses a sewing machine with a backstitch control mechanism, which comprises a machine shell and a backstitch wrench, wherein the backstitch wrench is rotatably arranged on the machine shell; one side of the backstitch wrench is provided with a magnetic induction switch and an ejector rod which are connected with the shell, the end part of the ejector rod is abutted against the backstitch wrench, and the ejector rod is arranged on the shell in a lifting way so as to enable the ejector rod to penetrate through the magnetic induction switch during backstitch. When the backstitch is switched, a worker shifts the backstitch wrench to enable the backstitch wrench to press the ejector rod to move towards the magnetic induction switch by hand, and the magnetic induction switch controls the needle pitch change of the sewing machine through the control system. The concrete structure of the control mechanism is simplified, and the operation of the control mechanism is convenient according to the habit of personnel.
Description
Technical Field
The utility model relates to the technical field of sewing equipment, in particular to a sewing machine with a backstitch control mechanism.
Background
At present, the stepping motor is gradually turned into a trend for controlling the needle pitch adjustment action, compared with the traditional technology, the technology can obtain accurate needle pitch and silent backstitch, and can realize a series of actions related to the needle pitch, so that the backstitch wrench is forced to be cancelled, and the backstitch is realized by using a key on a head illuminating lamp of a shell. However, due to the operation habit of workers (left-hand cloth control and right-hand backstitch wrench), the operation is inconvenient, so that a backstitch control mechanism can be designed to realize the actions of needle pitch change and the like under the control of the conventional stepping motor for adjusting the needle pitch.
As in the patent publication 201922275199.X, this patent is provided with the magnetic path in backstitch spanner breach department, realizes the backstitch through hall subassembly, but it limits the stroke and the torsional spring of spanner through a plurality of spacer pins, and the part is more to it is located step motor below, and the step motor of present market mainstream adjusts the pitch mechanism, does not have sufficient installation space in step motor below, has more installation space only in step motor left side.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art sewing machines, the present invention provides a sewing machine having a backstitch control mechanism. .
In order to solve the technical problem, the utility model is solved by the following technical scheme:
the sewing machine with the backstitch control mechanism comprises a machine shell and a backstitch wrench, wherein the backstitch wrench is rotatably arranged on the machine shell;
one side of the backstitch wrench is provided with a magnetic induction switch and an ejector rod which are connected with the shell, the end part of the ejector rod is abutted against the backstitch wrench, and the ejector rod is arranged on the shell in a lifting way so as to enable the ejector rod to penetrate through the magnetic induction switch during backstitch.
Preferably, the mounting bracket is fixedly mounted on the machine shell, one end of the mounting bracket is provided with a mandril positioning block extending in the direction away from the machine shell, and the mandril vertically penetrates through the mandril positioning block and can lift in the mandril positioning block.
Preferably, the magnetic induction switch is positioned below the mounting bracket, a magnetic induction coil matched with the ejector rod is arranged in the magnetic induction switch, and the ejector rod can lift in the magnetic induction coil.
Preferably, the installation support further comprises a pressure spring, the pressure spring is arranged above the installation support, a baffle ring is sleeved on the upper end of the ejector rod, and two ends of the pressure spring respectively abut against the lower end face of the baffle ring and the upper end face of the installation support.
Preferably, the baffle ring and the ejector rod are of an integrated structure.
Preferably, the baffle ring is detachably sleeved at the upper end of the ejector rod.
Preferably, the backstitch wrench comprises a control part and a rotating part, the control part abuts against the upper end of the ejector rod, and the rotating part is located on one side of the control part and is arranged above the control part.
Preferably, the rotating part is provided with a through hole, the shaft position screw penetrates through the through hole and is connected with the machine shell, and the rotating part can rotate around the shaft position screw.
Preferably, the device further comprises a limit screw, a limit groove is formed in the rotating part, and the limit screw penetrates through the limit groove and is connected with the shell.
Preferably, the needle pitch adjusting mechanism further comprises a stepping motor connected with the needle pitch adjusting mechanism, and the stepping motor is connected with the magnetic induction switch through a control system and is installed on the machine shell.
Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that: the number of changed parts is reduced to reduce the cost, and a backstitch wrench mechanism is added on the basis of the existing structure. When the backstitch is switched, a worker toggles the backstitch wrench to enable the backstitch wrench to press the ejector rod to move towards the magnetic induction switch by hand, and the magnetic induction switch controls the stepping motor to drive the needle pitch adjusting mechanism to adjust the needle pitch through the control system to realize backstitch. The concrete structure of the control mechanism is simplified, and the operation of the control mechanism is convenient according to the habit of personnel.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion M in fig. 1.
Fig. 3 is a schematic structural view of a maximum forward stitch length state.
FIG. 4 is a schematic view showing the maximum backstitch gauge state.
Fig. 5 is a schematic structural view of the backstitch wrench.
FIG. 6 is a schematic view showing the structure of a carrier rod and a retainer ring in example 1.
FIG. 7 is a schematic view showing the structure of a carrier rod and a retainer ring in example 3.
The names of the parts indicated by the numerical references in the drawings are as follows: the device comprises a shell 1, a backstitch wrench 2, a control part 201, a rotating part 202, a through hole 2021, a limiting groove 2022, a limiting screw 3, a shaft position screw 4, a pressure spring 5, a magnetic induction switch 6, a push rod 7, an installation support 8, a push rod positioning block 801, a stepping motor 9 and a retaining ring 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A sewing machine having a backstitch control mechanism, as shown in fig. 1 to 6, includes a machine case 1 and a backstitch wrench 2, the backstitch wrench 2 being rotatably provided on the machine case 1; one side of the backstitch wrench 2 is provided with a magnetic induction switch 6 and a push rod 7 which are connected with the machine shell 1, the end part of the push rod 7 is abutted against the backstitch wrench 2, and the push rod 7 is arranged on the machine shell 1 in a lifting way so that the push rod 7 is arranged in the magnetic induction switch 6 in a penetrating way during backstitch. When switching backstitch, the staff stirs backstitch spanner 2, makes backstitch spanner 2 press ejector pin 7 and removes in to magnetism feels switch 6, and magnetism feels switch 6 carries out the gauge needle through control system control sewing machine and adjusts and realize the backstitch. The concrete structure of the control mechanism is simplified, and the operation of the control mechanism is convenient according to the habit of personnel.
Still include installing support 8, installing support 8 fixedly installs on casing 1, and the one end of installing support 8 is equipped with the ejector pin locating piece 801 that extends to keeping away from casing 1 direction, and ejector pin 7 vertically wears to establish in ejector pin locating piece 801 and can go up and down in ejector pin locating piece 801. The ejector rod 7 limits the moving direction of the ejector rod 7 through the ejector rod positioning block 801 of the mounting bracket 8, the ejector rod 7 is prevented from shaking in the moving process, the moving stability of the ejector rod 7 is improved, and meanwhile the matching precision of the ejector rod 7 and the magnetic induction switch 6 is also improved.
The magnetic induction switch 6 is positioned below the mounting bracket 8, a magnetic induction coil matched with the ejector rod 7 is arranged in the magnetic induction switch 6, and the ejector rod 7 can lift in the magnetic induction coil. The mandril 7 moves into the magnetic induction coil of the magnetic induction switch 6, so that the magnetic induction switch 6 can transmit corresponding control signals to the sewing machine through the control system according to the change of the magnetic induction quantity in the magnetic induction coil, and the sewing machine can complete corresponding stitch length adjustment.
The pressing device is characterized by further comprising a pressing spring 5, wherein the pressing spring 5 is arranged above the mounting support 8, a baffle ring 10 is arranged at the upper end of the ejector rod 7, and two ends of the pressing spring 5 respectively abut against the lower end face of the baffle ring 10 and the upper end face of the mounting support 8. The setting of pressure spring 5 makes things convenient for ejector pin 7 to upwards reset, and ejector pin 7 jack-up backstitch spanner 2 serves simultaneously, has simplified the structure and the operation when backstitch switches into the same direction as the seam.
The backstitch wrench 2 comprises a control part 201 and a rotating part 202, wherein the control part 201 is abutted against the upper end of the ejector rod 7, and the rotating part 202 is positioned on one side of the control part 201 and is arranged above the control part 201. Backstitch spanner 2 rotates on casing 1 through rotating part 202, and control part 201 rotates along with rotating part 202 is synchronous, improves backstitch spanner 2 pivoted stability, also makes things convenient for staff's operation simultaneously.
The rotating part 202 is provided with a through hole 2021, the shaft position screw 4 penetrates through the through hole 2021 and is connected with the casing 1, and the rotating part 202 can rotate around the shaft position screw 4. Rotation portion 202 rotates on casing 1 around axle position screw 4, improves the stability when backstitch spanner 2 rotates, makes things convenient for the staff to operate backstitch spanner 2.
The rotating part 202 is provided with a limit groove 2022, and the limit screw 3 penetrates through the limit groove 2022 and is connected with the casing 1. The limiting screw 3 and the limiting groove 2022 are matched to limit the rotating angle of the backstitch wrench 2, and the operation precision of the backstitch wrench 2 by workers is improved.
Example 2
As shown in fig. 1 to 6, the sewing machine with the backstitch control mechanism further includes a stepping motor 9 connected to the needle pitch adjustment mechanism based on embodiment 1, and the stepping motor 9 is connected to the magnetic induction switch 6 through a control system and is mounted on the machine case 1. The control system is used for converting the signal of the magnetic induction switch 6 into a needle pitch adjusting signal and transmitting the needle pitch adjusting signal to the stepping motor 9, and the stepping motor 9 drives the needle pitch adjusting mechanism to adjust the needle pitch. When the backstitch wrench 2 pushes the ejector rod 7 to enter the magnetic induction switch 6, the magnetic induction quantity of a magnetic induction coil in the magnetic induction switch 6 changes, the magnetic induction switch 6 transmits a corresponding control signal to the stepping motor 9 through the control system according to the change of the magnetic induction quantity, and the stepping motor 9 controls the needle pitch adjusting mechanism to perform corresponding needle pitch adjusting action. With the push rod 7 gradually entering the magnetic induction coil, the stepping motor 9 controls the stitch length adjusted by the stitch length adjusting mechanism to gradually decrease until the stitch length is adjusted to be the backstitch stitch length equal to the original forward stitch length. For example, when the stitch length is 3mm, when the lower end of the ejector rod 7 enters the bottom of the magnetic induction coil, the stitch length is changed into 3mm of backstitch, and the stitch length change is conveniently controlled.
When the sewing machine is in a forward sewing state, the pressure spring 5 jacks up the ejector rod 7 to enable the ejector rod 7 to be located above the magnetic induction switch 6, the upper end portion of the ejector rod 7 jacks up the backstitch wrench 2, and the limiting screw 3 abuts against the left end of the limiting groove 2022.
When the sewing machine is switched to a backstitch state, the backstitch wrench 2 is pressed down, the backstitch wrench 2 pushes the ejector rod 7 to move into a magnetic induction coil of the magnetic induction switch 6, a worker appropriately stirs the backstitch wrench 2 according to needs to control the ejector rod 7 to enter the position in the magnetic induction coil, the change of the magnetic induction quantity in the magnetic induction coil is immediately converted into a needle pitch adjusting signal through a control system and transmitted to the stepping motor 9, and the stepping motor 9 controls the needle pitch adjusting mechanism to perform corresponding adjustment according to the needle pitch adjusting signal. When the limit screw 3 is abutted against the right end of the limit groove 2022, the ejector rod 7 completely enters the magnetic induction coil, and the stitch length of the sewing machine is changed into the maximum backstitch stitch length at the moment.
The sewing machine with the backstitch control mechanism has the following characteristics and advantages:
1. the backstitch spanner is pulled to push the ejector rod to move towards the magnetic induction switch, the position of the ejector rod entering the magnetic induction switch controls the stepping motor to correspondingly adjust the stitch length of the stitch length adjusting mechanism, the stitch length adjusting mode of the sewing machine is simplified, and meanwhile, the sewing machine is convenient for workers to operate according to habits.
2. The ejector pin passes through the installing support to be installed on the casing, and the limited ejector pin can only vertical removal, has improved the precision that the ejector pin goes up and down. The push rod and the backstitch wrench are reset after being shifted by the pressure spring, so that the structures and the operation modes of the push rod and the backstitch wrench are simplified.
3. The rotation stroke of the backstitch wrench is limited by the limit screw and the limit groove, and the rotation precision and the rotation stability of the backstitch wrench are improved.
Example 3
As shown in fig. 1 to 5 and fig. 7, the sewing machine having the backstitch control mechanism is different from embodiment 2 in that a stopper ring 10 is detachably fitted over an upper end of a carrier rod 7, and the stopper ring 10 is a split washer.
Claims (10)
1. Sewing machine with backstitch control mechanism, including casing (1) and backstitch spanner (2), its characterized in that: the backstitch wrench (2) is rotatably arranged on the shell (1);
one side of the backstitch wrench (2) is provided with a magnetic induction switch (6) and an ejector rod (7) which are connected with the machine shell (1), the end part of the ejector rod (7) is abutted against the backstitch wrench (2), and the ejector rod (7) is arranged on the machine shell (1) in a lifting way so that the ejector rod (7) penetrates through the magnetic induction switch (6) during backstitch.
2. The sewing machine with backstitch control as claimed in claim 1, wherein: still include installing support (8), installing support (8) are installed on casing (1) fixedly, and the one end of installing support (8) is equipped with ejector pin locating piece (801) that extend to keeping away from casing (1) direction, and ejector pin (7) are vertical to be worn to establish in ejector pin locating piece (801) and can go up and down in ejector pin locating piece (801).
3. The sewing machine with backstitch control as claimed in claim 2, wherein: the magnetic induction switch (6) is positioned below the mounting bracket (8), a magnetic induction coil matched with the ejector rod (7) is arranged in the magnetic induction switch (6), and the ejector rod (7) can lift in the magnetic induction coil.
4. The sewing machine with backstitch control as claimed in claim 2, wherein: the device is characterized by further comprising a pressure spring (5), wherein the pressure spring (5) is arranged above the mounting support (8), a baffle ring (10) is arranged at the upper end of the ejector rod (7), and two ends of the pressure spring (5) are respectively abutted against the lower end face of the baffle ring (10) and the upper end face of the mounting support (8).
5. The sewing machine with backstitch control as claimed in claim 4, wherein: the baffle ring (10) and the ejector rod (7) are of an integrated structure.
6. The sewing machine with backstitch control as claimed in claim 4, wherein: the baffle ring (10) is detachably sleeved at the upper end of the ejector rod (7).
7. The sewing machine with backstitch control as claimed in claim 1, wherein: the backstitch wrench (2) comprises a control part (201) and a rotating part (202), the control part (201) is abutted to the upper end of the ejector rod (7), and the rotating part (202) is located on one side of the control part (201) and is arranged above the control part (201).
8. The sewing machine with backstitch control as claimed in claim 7, wherein: the rotating part (202) is provided with a through hole (2021), the shaft position screw (4) penetrates through the through hole (2021) and is connected with the machine shell (1), and the rotating part (202) can rotate around the shaft position screw (4).
9. The sewing machine with backstitch control as claimed in claim 7, wherein: the rotating part (202) is provided with a limit groove (2022), and the limit screw (3) penetrates through the limit groove (2022) and is connected with the casing (1).
10. The sewing machine with backstitch control as claimed in claim 1, wherein: the needle pitch control mechanism is characterized by further comprising a stepping motor (9) connected with the needle pitch adjusting mechanism, wherein the stepping motor (9) is connected with the magnetic induction switch (6) through a control system and is installed on the machine shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120744658.9U CN215440952U (en) | 2021-04-12 | 2021-04-12 | Sewing machine with backstitch control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120744658.9U CN215440952U (en) | 2021-04-12 | 2021-04-12 | Sewing machine with backstitch control mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215440952U true CN215440952U (en) | 2022-01-07 |
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ID=79704440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120744658.9U Active CN215440952U (en) | 2021-04-12 | 2021-04-12 | Sewing machine with backstitch control mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215440952U (en) |
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2021
- 2021-04-12 CN CN202120744658.9U patent/CN215440952U/en active Active
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