Mouth machines can be divided into the following categories according to their structural methods:

One is the bending needle sleeve machine
At that time, the most widely sold machine on the market was the bending needle mouthpiece machine, and the most commonly used ones were also the bending needle mouthpiece machine, such as Fuma brand, Hongqima brand, Aolin brand, Jiancheng brand, Meilei brand, Longxing brand, Feihu brand, and so on; The bending needle sleeve machine is priced cheap and can be borne by most people, with a high defect failure rate and low power.
The second is the straight needle threading machine
Its characteristic is that it has changed the traditional connecting rod layout of the disc sleeve machine in the past, using cam method to drive each part, and the whole machine is not easy to deform. Taiwan's Chiqian brand and Huanxing brand, as well as domestically produced Sewing God brand and Xingfa Min brand, all of these straight needle threading machines are highly anticipated by users due to their innovative structure, strong applicability, fast threading speed, and simple repair.
The third is a fully automatic sealing machine
Fully automatic knitting machines were produced by Black Horse brand in South Korea and Conti company in Italy at that time. These knitting machines were high standard, high-power sweater quick knitting machines with a stable structure and low failure rate. However, the quotation was high, ranging from over 30000 yuan per machine to around 60000 yuan per machine. To apply for the upper collar, a special knitting machine for the upper collar must be purchased separately, which cannot be completed on one machine.
The fourth is a straight seam sewing machine. This type of sewing machine is good for sewing straight seams, but it cannot solve the problem of upper collar, and its function is basically the same as the active seam sewing machine mentioned above.