CN217351740U

CN217351740U - Sewing machine needle distance adjusting mechanism

Info

Publication number: CN217351740U
Application number: CN202221376205.6U
Authority: CN
Inventors: 叶梦启; 陈主锐; 李修业
Original assignee: Precious Science And Technology Group Corp ltd
Current assignee: Precious Science And Technology Group Corp ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-02
Anticipated expiration: 2032-06-01

Abstract

The utility model belongs to the technical field of sewing equipment, in particular to a needle pitch adjusting mechanism of a sewing machine; the feeding mechanism comprises a shell, a feeding shaft, a tooth frame assembly connected with the feeding shaft and a swing seat assembly capable of driving the feeding shaft to swing, wherein a concave cavity which is concave towards the inner direction of the shell is formed in the right end of the shell and used for mounting a driving motor, a through hole for a motor shaft of the driving motor to pass through is formed in the inner side wall of the concave cavity, the driving motor is fixedly arranged on the inner side wall of the concave cavity, the motor shaft penetrates through the through hole and extends into the shell, and the motor shaft is connected with the swing seat assembly through a crank assembly to drive the swing seat assembly to swing; the utility model discloses a spare part contains completely at machine inner chamber, need not anxious problem that lubricating oil leaked, can not pollute the surface fabric, makes the whole cleaner and tidier of machine, has improved the utilization ratio of machine inner space, has improved the productivity effect.

Description

Sewing machine needle distance adjusting mechanism

The technical field is as follows:

the utility model belongs to the technical field of sewing equipment, refer in particular to a sewing machine gauge needle adjustment mechanism.

Background art:

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. In the sewing process, different stitch lengths can show different sewing effects, so that the corresponding stitch lengths need to be adjusted in different sewing occasions.

In order to achieve automatic needle pitch adjustment, mechanisms for motor-driven needle pitch adjustment are available on the market. However, part of the motors are directly arranged on the right end face of the shell, so that the condition of lubricating oil leakage is easy to occur, the fabric is further polluted, and the sewing process is influenced.

The invention content is as follows:

the utility model aims at providing a spare part contains completely in the machine inner chamber, need not worry the sewing machine needle pitch adjustment mechanism of the problem of lubricating oil leakage.

The utility model discloses a realize like this:

the utility model provides a sewing machine gauge needle adjustment mechanism, includes casing, feeding shaft, the tooth frame subassembly that is connected with the feeding shaft, can drive feeding shaft wobbling swing seat subassembly is provided with the sunken cavity of the inside direction of casing at the right-hand member of casing, and this cavity is used for installing driving motor, is provided with the through-hole that supplies driving motor's motor shaft to pass on the inside wall of cavity, and driving motor sets firmly on the inside wall of cavity, just the motor shaft passes inside the through-hole stretches into the casing, the motor shaft passes through crank assembly and is connected with swing seat subassembly and drive swing seat subassembly swing.

In the above-mentioned needle pitch adjusting mechanism for a sewing machine, the driving motor is a stepping motor.

In the above-mentioned needle pitch adjusting mechanism for the sewing machine, the crank assembly comprises a needle pitch adjusting crank and a connecting rod, one end of the needle pitch adjusting crank is provided with a motor shaft mounting hole, the other end of the needle pitch adjusting crank is provided with a hinged shaft hole, one end of the needle pitch adjusting crank is fixedly connected with the motor shaft through the motor shaft mounting hole, the other end of the needle pitch adjusting crank is fixedly connected with the hinged shaft through the hinged shaft hole, one end of the connecting rod is hinged with the hinged shaft, and the other end of the connecting rod is rotatably connected to the swing seat of the swing seat assembly.

In the above-mentioned needle pitch adjusting mechanism of the sewing machine, the pitch of the motor shaft mounting hole to the hinge shaft hole is 21 ± 0.5 mm.

In the above-mentioned needle pitch adjusting mechanism of the sewing machine, the swing seat is provided with a pin shaft, and the other end of the connecting rod is hinged with the pin shaft.

In the above-mentioned needle pitch adjusting mechanism of the sewing machine, the pin shaft is provided with a limiting part for limiting the connecting rod.

In the above mentioned mechanism for adjusting the needle pitch of the sewing machine, the position-limiting element is a snap spring or a retainer ring.

In the above-mentioned needle pitch adjustment mechanism of sewing machine, the swing seat subassembly includes the swing seat, the middle part of swing seat both sides is provided with the bolt, the swing seat is connected on the bottom plate through the bolt swing.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model discloses a spare part contains completely at machine inner chamber, need not worry the problem that lubricating oil leaked, can not pollute the surface fabric, makes the machine whole cleaner and tidier, has improved the utilization ratio of machine inner space, has improved the productivity effect.

2. The utility model discloses the length of gauge needle adjusting crank is great, and its motor shaft mounting hole is 21 0.5mm to the gauge hole in articulated shaft hole, can enlarge gauge needle control range, can adjust about 8mm to the biggest to be applicable to the sewing occasion of various differences.

Description of the drawings:

fig. 1 is a schematic view of the present invention;

fig. 2 is a schematic view of the present invention after the casing is disassembled;

fig. 3 is a schematic view of the housing of the present invention;

fig. 4 is a schematic view of the needle pitch adjusting crank of the present invention.

In the figure: 1. a housing; 2. a feed shaft; 3. a dental articulator assembly; 4. a swing seat assembly; 5. a concave cavity; 6. a drive motor; 7. a motor shaft; 8. a through hole; 9. a needle pitch adjusting crank; 10. a connecting rod; 11. mounting a motor shaft; 12. the hinge shaft hole; 13. a swing seat; 14. a pin shaft; 15. a clamp spring; 16. and (4) a bolt.

The specific implementation mode is as follows:

the invention is further described below with reference to specific embodiments:

as shown in fig. 1-4, the utility model provides a sewing machine needle distance adjustment mechanism, this sewing machine needle distance adjustment mechanism include casing 1, pay-off axle 2, with the tooth frame subassembly 3 that pay-off axle 2 is connected, can drive pay-off axle 2 wobbling swing seat subassembly 4, pay-off axle 2 rotates to be connected on the bottom plate, swing seat subassembly 4 swing is connected on the bottom plate. The right-hand member at casing 1 is provided with the sunken cavity 5 of the inside direction of casing 1, and this cavity 5 is used for installing driving motor 6, is provided with the through-hole 8 that supplies driving motor 6's motor shaft 7 to pass on the inside wall of cavity 5, and driving motor 6 sets firmly on the inside wall of cavity 5, just motor shaft 7 passes through-hole 8 and stretches into inside the casing 1, motor shaft 7 is connected with swing seat subassembly 4 through crank assembly and is driven swing seat subassembly 4 and swing, and then reaches the purpose of adjusting the gauge needle.

The utility model discloses a spare part contains completely at machine inner chamber, need not anxious lubricating oil leakage's problem, makes the machine whole cleaner and tidier, has improved the utilization ratio of machine inner space, has improved the productivity effect.

Specifically, driving motor 6 is step motor or servo motor, the utility model discloses preferred step motor by its action of controller control, can adjust the gauge needle accurately.

As shown in fig. 2, the crank assembly includes a needle pitch adjusting crank 9 and a connecting rod 10, one end of the needle pitch adjusting crank 9 is provided with a motor shaft mounting hole 11, and the other end is provided with an articulated shaft hole 12, one end of the needle pitch adjusting crank 9 is fixedly connected with the motor shaft 7 through the motor shaft mounting hole 11, the other end is fixedly connected with the articulated shaft through the articulated shaft hole 12, and one end of the connecting rod 10 is articulated with the articulated shaft, and the other end is rotatably connected to an oscillating base 13 of the oscillating base assembly 4.

Specifically, the pitch L between the motor shaft mounting hole 11 and the hinge shaft hole 12 is 21 ± 0.5mm, and the specific pitch may be any value within the above range, and 21mm is preferred in this embodiment. The pitch can enlarge the needle pitch adjusting range and can be adjusted to about 8mm at most.

Furthermore, a pin 14 is arranged on the swinging seat 13, and the other end of the connecting rod 10 is hinged with the pin 14. The pin 14 is provided with a limiting member for limiting the connecting rod 10.

Specifically, the limiting member is a snap spring 15 or a retainer ring.

As shown in fig. 2, the swing seat set 4 includes a swing seat 13, a bolt 16 is disposed in the middle of two sides of the swing seat 13, and the swing seat 13 is connected to the bottom plate in a swinging manner through the bolt 16.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a sewing machine gauge needle adjustment mechanism, includes casing (1), pay-off axle (2), tooth frame subassembly (3) that are connected with pay-off axle (2), can drive pay-off axle (2) wobbling swing seat subassembly (4), its characterized in that: the right-hand member in casing (1) is provided with concave cavity (5) towards the inside direction of casing (1), and this cavity (5) are used for installing driving motor (6), are provided with through-hole (8) that supply motor shaft (7) of driving motor (6) to pass on the inside wall of cavity (5), and driving motor (6) set firmly on the inside wall of cavity (5), just motor shaft (7) pass the mounting hole and stretch into inside casing (1), motor shaft (7) are connected through crank subassembly and swing seat subassembly (4) and are driven swing seat subassembly (4) swing.

2. The needle pitch adjustment mechanism of a sewing machine according to claim 1, wherein: the driving motor (6) is a stepping motor.

3. A needle pitch adjusting mechanism for a sewing machine according to claim 1 or 2, wherein: the crank assembly comprises a needle pitch adjusting crank (9) and a connecting rod (10), wherein a motor shaft mounting hole (11) is formed in one end of the needle pitch adjusting crank (9), a hinged shaft hole (12) is formed in the other end of the needle pitch adjusting crank (9), one end of the needle pitch adjusting crank (9) is fixedly connected with a motor shaft (7) through the motor shaft mounting hole (11), the other end of the needle pitch adjusting crank is fixedly connected with the hinged shaft through the hinged shaft hole (12), one end of the connecting rod (10) is hinged with the hinged shaft, and the other end of the connecting rod is rotatably connected to a swinging seat (13) of the swinging seat assembly (4).

4. A needle pitch adjustment mechanism for a sewing machine as defined in claim 3, wherein: the pitch between the motor shaft mounting hole (11) and the hinged shaft hole (12) is 21 +/-0.5 mm.

5. A needle pitch adjustment mechanism for a sewing machine as claimed in claim 3, wherein: the swing seat (13) is provided with a pin shaft (14), and the other end of the connecting rod (10) is hinged with the pin shaft (14).

6. The needle pitch adjustment mechanism of a sewing machine according to claim 5, wherein: and the pin shaft (14) is provided with a limiting part for limiting the connecting rod (10).

7. The needle pitch adjustment mechanism of a sewing machine according to claim 6, wherein: the limiting piece is a clamp spring (15) or a retainer ring.

8. A sewing machine pitch adjustment mechanism according to claim 1 or 2, wherein: the swing seat assembly (4) comprises a swing seat (13), the middle parts of two sides of the swing seat (13) are provided with bolts (16), and the swing seat (13) is connected to the bottom plate in a swinging mode through the bolts (16).