CN-224227384-U - Feeding device

CN224227384UCN 224227384 UCN224227384 UCN 224227384UCN-224227384-U

Abstract

The utility model belongs to the technical field of sewing machines, and discloses a feeding device which comprises a stitch control motor, an eccentric switching assembly, a feeding shaft, a tooth frame assembly, a tooth lifting motor, a tooth lifting assembly and a tooth lifting assembly, wherein one end of the eccentric switching assembly is connected with the output end of the stitch control motor, one end of the feeding shaft is connected with the eccentric switching assembly, the other end of the feeding shaft horizontally extends away from the stitch control motor, one end of the tooth frame assembly is connected with the feeding shaft, the feeding shaft rotates to drive the tooth frame assembly to move forwards and backwards, one end of the tooth lifting assembly is connected with the output end of the tooth lifting motor, and the other end of the tooth lifting assembly moves to adjust the height of the tooth frame assembly. The double-stepping motor driving mode is adopted, one stepping motor drives teeth to move up and down, the other stepping motor controls the needle pitch, the needle pitch is changed by moving back and forth, feeding tracks are formed, different feeding tracks are realized through time sequence change, the complex connecting rod mechanism is changed into a switcher component to transfer motion, and the switcher component is adopted, so that feeding uniformity and high precision are ensured.

Inventors

FANG SHENGHUA
CHEN HANJIE
BI JINLIANG

Assignees

上海富山精密机械科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (5)

1. A feeding device is characterized by comprising, A stitch length control motor; One end of the eccentric switching component is connected with the output end of the needle pitch control motor; one end of the feeding shaft is connected with the eccentric switching assembly, and the other end of the feeding shaft horizontally extends in a direction away from the needle distance control motor; The feeding shaft rotates to drive the dental frame assembly to move back and forth; a tooth lifting motor; One end of the lifting tooth assembly is connected with the output end of the lifting tooth motor, and the other end of the lifting tooth assembly is connected with the tooth frame assembly, and the lifting tooth assembly moves to adjust the height of the tooth frame assembly.
2. The feeding device as set forth in claim 1, wherein the eccentric switching assembly comprises an eccentric connecting rod having one end connected to an output end of the pitch control motor, the other end of the eccentric connecting rod being connected to a pitch-shifting joint, a pitch-shifting shaft connected to the pitch-shifting joint, the pitch-shifting shaft extending horizontally away from the pitch control motor, the pitch-shifting shaft being connected to the feeding shaft via the switch assembly.
3. A feeding device according to claim 1 or 2, wherein the dental frame assembly comprises a dental frame crank, one end of the dental frame crank is connected with the feeding shaft, the dental frame crank is connected with a dental frame, and feeding teeth are arranged on the dental frame.
4. A feeding device according to claim 3, wherein the feed lifting assembly comprises a feed lifting crank assembly connected to the feed lifting motor, one end of the feed lifting shaft is connected to the feed lifting crank assembly, the other end is connected to the feed lifting crank, the feed lifting crank is hinged to the feed lifting fork, and one end of the feed lifting fork is fixed to the feed lifting frame.
5. A feeding device according to claim 4, wherein said feeding shaft, pitch switching shaft and feed lifting shaft are arranged in parallel with each other.

Description

Feeding device Technical Field The utility model belongs to the technical field of sewing machines, and particularly relates to a feeding device. Background The existing sewing machine is connected with a complex connecting rod structure by adopting a motor, and the size of up-and-down movement and front-and-back movement of teeth is controlled by the complex connecting rod structure, so that deviation is easy to occur in the transmission process due to the complex connecting rod structure, the control precision is low, and the feeding is uneven. Disclosure of utility model The utility model aims to solve the problems and provide a feeding device which adopts two motors to respectively control the teeth to move downwards and upwards and backwards, improves the control precision of the feeding device and ensures uniform feeding. In order to achieve the aim, the utility model provides the following technical scheme that the feeding device comprises a needle pitch control motor; One end of the eccentric switching component is connected with the output end of the needle pitch control motor; one end of the feeding shaft is connected with the eccentric switching assembly, and the other end of the feeding shaft horizontally extends in a direction away from the needle distance control motor; The feeding shaft rotates to drive the dental frame assembly to move back and forth; a tooth lifting motor; One end of the lifting tooth assembly is connected with the output end of the lifting tooth motor, and the other end of the lifting tooth assembly is connected with the tooth frame assembly, and the lifting tooth assembly moves to adjust the height of the tooth frame assembly. According to the utility model, the eccentric switching assembly comprises an eccentric connecting rod, one end of the eccentric connecting rod is connected with the output end of the needle pitch control motor, the other end of the eccentric connecting rod is connected with a needle pitch switching joint, the needle pitch switching shaft connected with the needle pitch switching joint extends horizontally in the direction away from the needle pitch control motor, and the needle pitch switching shaft is connected with the feeding shaft through the switcher assembly. According to the utility model, the dental frame assembly further comprises a dental frame crank, one end of the dental frame crank is connected with the feeding shaft, the dental frame crank is connected with a dental frame, and feeding teeth are arranged on the dental frame. According to the utility model, the lifting tooth assembly comprises a lifting tooth crank assembly connected with the lifting tooth motor, one end of the lifting tooth shaft is connected with the lifting tooth crank assembly, one end of the lifting tooth shaft is connected with the lifting tooth crank, the lifting tooth crank is hinged with the lifting tooth fork, and one end of the lifting tooth fork is fixed with the lifting tooth frame. According to the utility model, the feeding shaft, the needle pitch switching shaft and the tooth lifting shaft are arranged in parallel. Compared with the prior art, the utility model has the beneficial effects that a double-stepping motor driving mode is adopted, one stepping motor drives teeth to move up and down, the other stepping motor controls the needle pitch to move back and forth, a feeding track is formed, different feeding tracks are realized through time sequence change, the complex link mechanism is changed into a switcher component to transfer motion, and the switcher component is adopted, so that uniform feeding and high precision are ensured. The tooth height is adjusted by independently controlling the tooth lifting motor, so that the cloth with different thicknesses can be sewn, and the forward sewing or the backward sewing of the sewing machine can be conveniently controlled. Drawings FIG. 1 is a schematic view of a feeding device according to the present utility model; fig. 2 is a schematic structural diagram of a feeding device according to a second view angle of the present utility model. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. As shown in fig. 1 and 2, an embodiment of the present application provides a feeding device for a sewing machine, including a stitch control motor 1, an eccentric link 2 connected to an output shaft of the stitch control motor 1, a stitch switching joint 3 connected to the other end of the eccentric link 2, a stitch switching shaft 4 connected to the stitch switc