CN107938199B

CN107938199B - Needle raising mechanism

Info

Publication number: CN107938199B
Application number: CN201711402017.XA
Authority: CN
Inventors: 叶其孩; 叶方国; 叶其广
Original assignee: WENZHOU HUALONG PRINTING MACHINERY CO Ltd
Current assignee: Wenzhou Huazao Machinery Technology Co ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2021-02-02
Anticipated expiration: 2037-12-22
Also published as: CN107938199A

Abstract

The invention relates to the field of textile equipment, in particular to a needle raising mechanism. A needle raising mechanism comprises a needle inserting rod arranged on a frame, wherein two end parts of the needle inserting rod are positioned on a movable seat; a power main shaft which is arranged in parallel to the rod body direction of the needle inserting rod is positioned on the machine frame, and the power main shaft is connected with the movable seat through a seesaw rod assembly; when the power main shaft rotates, the movable seat is driven by the seesaw rod assembly to longitudinally reciprocate relative to the frame. The needle raising mechanism can synchronously operate the needle inserting rod and other mechanisms driven by the power main shaft, thereby ensuring the coordination among the mechanisms of the equipment.

Description

Needle raising mechanism

Technical Field

The invention relates to the field of textile equipment, in particular to a needle raising mechanism.

Background

The lace is a decorative handicraft product which is made of cotton thread, hemp thread, silk thread or various fabrics as raw materials and embroidered or woven commonly in people's life. The lace machine is an efficient sewing and embossing device, is mainly used for edge sewing, welding, melt cutting, embossing and the like of synthetic fiber cloth, and the processed product has the characteristics of good water tightness, high production efficiency, no needle thread auxiliary material, smooth and burr-free melt-cut surface, good hand feeling and the like. When the existing lace machine is used, a power component is required to be independently arranged to drive the needle inserting rod to longitudinally reciprocate along the rack; however, the knitting steps of the lace machine and other mechanisms are difficult to coordinate, and improvement is urgently needed.

Disclosure of Invention

In order to solve the above problems, the present invention provides a needle raising mechanism, which can synchronize the operation of the needle inserting rod with other mechanisms driven by the power main shaft, thereby ensuring the coordination among the mechanisms of the device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a needle raising mechanism is characterized in that: the needle inserting device comprises a needle inserting rod arranged on a machine frame, wherein two end parts of the needle inserting rod are positioned on a movable seat; a power main shaft which is arranged in parallel to the rod body direction of the needle inserting rod is positioned on the machine frame, and the power main shaft is connected with the movable seat through a seesaw rod assembly; when the power main shaft rotates, the movable seat is driven by the seesaw rod assembly to longitudinally reciprocate relative to the frame.

Preferably, the seesaw component comprises a seesaw rod, an eccentric wheel connecting rod and a movable push rod; the middle part of the seesaw rod is rotatably arranged on the frame through a shaft rod, the eccentric wheel is sleeved on the power main shaft and synchronously rotates with the power main shaft, and two end parts of the eccentric wheel connecting rod are respectively connected with the eccentric wheel and the first end part of the seesaw rod; the second end of the seesaw rod is arranged below the movable seat, the lower end of the movable push rod is connected to the second end of the seesaw rod, and the upper end of the movable push rod is connected to the movable seat. In the technical scheme, the power main shaft drives the eccentric wheel to rotate, the eccentric wheel drives the eccentric wheel connecting rod to move up and down, and the up-and-down seesaw motion is further transmitted to the movable push rod under the action of the seesaw rod and finally the movable seat is pushed to move.

Preferably, the middle part of the seesaw rod is provided with a sleeve, a bearing is arranged inside the sleeve, and the bearing is sleeved on the shaft rod.

Preferably, the rack is provided with a vertically arranged guide rod, and the movable seat is arranged on the guide rod in a sliding manner.

Preferably, the first end of the teeter-totter is arranged below the eccentric wheel, the lower end of the eccentric wheel connecting rod is connected with the first end of the teeter-totter, and the upper end of the eccentric wheel connecting rod is sleeved on the eccentric wheel.

The invention adopts the technical scheme, which relates to a needle raising mechanism; in the needle raising mechanism, a power main shaft is driven by a main motor, the power main shaft drives a movable seat to longitudinally reciprocate relative to a frame through a seesaw rod assembly, and the two end parts of a needle inserting rod are positioned on the movable seat, so that the needle inserting rod is synchronously driven to longitudinally reciprocate. Therefore, the structure can ensure the synchronous operation of the insertion needle rod and other mechanisms driven by the power main shaft, thereby ensuring the coordination among the mechanisms of the equipment.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the needle raising mechanism.

Fig. 3 is a schematic structural view of the lateral movement mechanism of the pin inserting rod.

Detailed Description

Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The step control lace machine shown in fig. 1-3 comprises a frame 1, and a conveying mechanism, a needle raising mechanism and a needle inserting rod transverse movement mechanism which are arranged on the frame 1. The needle raising mechanism and the needle inserting rod transverse movement mechanism are driven by a main motor 2, and the conveying mechanism comprises a conveying roller set and a stepping motor for driving the conveying roller set. The frame 1 is also provided with an encoder 31. The encoder 31 is used to read the spindle speed of the main motor 2 and feed back the read information to the driver of the stepping motor. So that the rotation speed of the stepping motor and the rotation speed of the main motor 2 are operated in a set ratio. The set of conveyor rolls generally comprises an upper input rubber roll 32, a lower input rubber roll 33 and an output rubber roll 33, the upper input rubber roll 32, the lower input rubber roll 33 and the output rubber roll 34 being driven by separate stepper motors. The stepping control lace machine is provided with an encoder 31 for reading the output rotating speed of the main motor 2 and feeding back the read information to a driver of the stepping motor, so that the rotating speed of the stepping motor and the rotating speed of the main motor 2 run according to a set proportion. In practice, the main motor 2 is driven by a frequency converter, when the frequency of the frequency converter is reduced, the speed of the main shaft is reduced, the stepping motor obtains data from the encoder 31 and correspondingly reduces the speed, and when the frequency of the frequency converter is increased, the speed is reduced. That is, a virtual gear mechanism (electronic gear) is formed between the stepping motor and the main motor 2, the number of revolutions can be changed by only setting a gear ratio on the driver when a product is to be replaced, and the chain distance is shortened to improve the quality of the product.

The needle raising mechanism comprises a needle inserting rod 41 arranged on the frame 1, two end parts of the needle inserting rod 41 are positioned on a movable seat 42, and the needle inserting rod 41 can axially move relative to the movable seat 42. The frame 1 is provided with a vertically arranged guide rod 43, and the movable seat 42 is slidably arranged on the guide rod 43. A power main shaft 44 arranged in parallel with the rod body direction of the needle inserting rod 41 is positioned on the frame 1, and the power main shaft 44 is connected with the movable seat 42 through a seesaw component. When the power main shaft 44 rotates, the movable seat 42 is driven by the seesaw rod assembly to longitudinally reciprocate relative to the machine frame 1. In the needle raising mechanism, a power main shaft 44 is driven by a main motor 2, the power main shaft 44 drives a movable seat 42 to reciprocate longitudinally relative to a frame 1 through a seesaw assembly, and the needle inserting rod 41 is synchronously driven to reciprocate longitudinally because two end parts of the needle inserting rod 41 are positioned on the movable seat 42.

Specifically, the seesaw assembly includes a seesaw 45, an eccentric 46, an eccentric link 47, and a movable push rod 48. The middle part of the seesaw rod 45 is provided with a sleeve, the middle part of the seesaw rod 45 is rotatably arranged on the rack 1 through a shaft rod, a bearing is arranged inside the sleeve, and the bearing is sleeved on the shaft rod. The eccentric wheel 46 is sleeved on the power main shaft 44 and rotates synchronously with the power main shaft 44, and two end parts of the eccentric wheel connecting rod 47 are respectively connected with the eccentric wheel 46 and a first end part of the seesaw rod 45; the first end of the seesaw rod 45 is arranged below the eccentric wheel 46, the lower end of the eccentric wheel connecting rod 47 is connected with the first end of the seesaw rod 45, and the upper end of the eccentric wheel connecting rod 47 is sleeved on the eccentric wheel 46. The second end of the seesaw rod 45 is arranged below the movable seat 42, the lower end of the movable push rod 48 is connected to the second end of the seesaw rod 45, and the upper end of the movable push rod 48 is connected to the movable seat 42. In the technical scheme, the power main shaft 44 drives the eccentric wheel 46 to rotate, the eccentric wheel 46 drives the eccentric wheel connecting rod 47 to move up and down, and the up and down movement is further transmitted to the movable push rod 48 through the action of the seesaw rod 45, and finally the movable seat 42 is pushed to move.

The pin inserting rod transverse movement mechanism comprises a swing rod assembly driving the pin inserting rod 41 to axially reciprocate and a spring 51 driving the pin inserting rod 41 to axially reset. The swing link assembly comprises a cam 52 positioned on the frame 1 through a first rotating shaft 54, a swing link 53 driven by the cam 52, and a joint connecting rod 59 of which two ends are respectively connected with the movable end of the swing link 53 and the shaft end of the pin inserting rod 41. The main motor 2 is connected with a first rotating shaft 54 in a driving mode, the positioning end of the swing rod 53 is positioned through a second rotating shaft 55, and the swing rod 53 can swing by taking the second rotating shaft 55 as an axis. The middle part of the swing link 53 is provided with a track bearing 56 which is in rolling fit with the circumferential side surface of the cam 52. In the pin inserting rod transverse movement mechanism, the swing rod assembly and the spring 51 cooperate to drive the pin inserting rod 41 to axially reciprocate, a first rotating shaft 54 in the swing rod assembly can be driven by the main motor 2, the first rotating shaft 54 drives the cam 52 to rotate, and the cam 52 extrudes the middle part of the swing rod 53, so that the swing rod 53 performs limited swing around a second rotating shaft 55, and meanwhile, the pin inserting rod 41 is driven to axially move. The track bearing 56 of the swing rod 53 is always attached to the circumferential side face of the cam 52 under the action of the spring 51, and the track bearing 56 is adopted to realize rolling contact, so that the resistance generated in the transmission process of the cam 52 and the swing rod 53 can be reduced.

A worm 57 is positioned on the rack 1 through a bearing, and the main motor 2 is connected with the worm 57 through a belt wheel assembly 6. The first rotating shaft 54 is sleeved with a worm wheel 58, and the worm 57 is meshed with the worm wheel 58 through inclined threads. The first shaft 54 is perpendicular to the worm 57, and the encoder 31 is provided on an end of the first shaft 54. The power main shaft 44 is positioned on the frame 1 through a bearing, and the power main shaft 44 is coaxially connected with the worm 57.

By adopting the technical scheme, the step control festooned edge machine realizes the operation between the step motor and the main motor 2 according to the set rotation ratio on one hand, and ensures that the operation frequency of the conveying mechanism is matched with the operation frequency of the main motor 2; on the other hand, the main motor 2 synchronously drives the needle raising mechanism and the needle inserting rod transverse movement mechanism; therefore, the conveying mechanism, the needle raising mechanism and the needle inserting rod transverse movement mechanism are always balanced, and the running stability of the equipment is ensured.

Claims

1. A needle raising mechanism is characterized in that: the needle inserting device comprises a needle inserting rod arranged on a machine frame, wherein two end parts of the needle inserting rod are positioned on a movable seat; a power main shaft which is arranged in parallel to the rod body direction of the needle inserting rod is positioned on the machine frame, and the power main shaft is connected with the movable seat through a seesaw rod assembly; when the power main shaft rotates, the movable seat is driven to longitudinally reciprocate relative to the rack through the seesaw rod assembly, and the seesaw rod assembly comprises a seesaw rod, an eccentric wheel connecting rod and a movable push rod; the middle part of the seesaw rod is rotatably arranged on the frame through a shaft rod, the eccentric wheel is sleeved on the power main shaft and synchronously rotates with the power main shaft, and two end parts of the eccentric wheel connecting rod are respectively connected with the eccentric wheel and the first end part of the seesaw rod; the second end of the seesaw rod is located below the movable seat, the lower end of the movable push rod is connected to the second end of the seesaw rod, the upper end of the movable push rod is connected to the movable seat, the middle of the seesaw rod is provided with a sleeve, a bearing is arranged inside the sleeve, the bearing is sleeved on the shaft rod, the rack is provided with a vertically arranged guide rod, the movable seat is arranged on the guide rod in a sliding mode, the first end of the seesaw rod is located below the eccentric wheel, the lower end of the eccentric wheel connecting rod is connected with the first end of the seesaw rod, and the upper end of the eccentric wheel connecting rod is.