A piezoelectrically actuated yarn guide head

Abstract

A piezoelectrically actuated yarn guide head belongs to the technical field of the drive device of the thread adjuster yarn guide head in seamless underwear machine equipment. The present invention comprises a yarn guide head, a base rod, a toothed ring and a piezoelectric ceramic sheet. The two ends of the base rod are provided with toothed ring mounting countersunk holes whose axes intersect with the axis of the base rod. Each toothed ring mounting countersunk hole is provided with a toothed ring and a piezoelectric ceramic sheet arranged from the inside to the outside. The toothed ring at one end of the base rod is passed through a shaft sleeve, and a square shaft is passed through the inner hole of the shaft sleeve, and both ends of the square shaft are cantilevered out of the toothed ring mounting countersunk hole; the toothed ring at the other end of the base rod is passed through a connector, and the yarn guide head is installed against the end of the base rod and is located at the bottom of the toothed ring mounting countersunk hole. The yarn guide head is provided with a hole corresponding to the toothed ring mounting countersunk hole, and the bottom of the connector extends into the hole and is fixed to the yarn guide head by rivets.

Description

Technical Field

[0001] The invention belongs to the technical field of a drive device of a thread adjuster yarn guide head in seamless underwear machine equipment, and in particular relates to a piezoelectric actuated yarn guide head. Background Art

[0002] The existing underwear machine thread adjuster commonly uses pneumatic drive to drive the thread guide head to swing. However, the pneumatic drive requires a complex air path, and the moving mechanism of the thread guide head has many and complex parts, which makes the parts difficult to process and the cost high. In addition, the thread adjuster itself is not large in size, and the pneumatic drive method requires the installation of a pneumatic device, which makes the external structure of the thread adjuster complicated. It also requires the processing of complex air paths and sealing devices, which makes the manufacturing and installation efficiency low. Summary of the invention

[0003] The object of the present invention is to provide a piezoelectric actuated yarn guide head, and the present invention aims to reduce processing costs, improve installation efficiency, and simplify the structure.

[0004] To this end, the present invention adopts the following technical scheme: a piezoelectrically actuated yarn guide head, the piezoelectrically actuated yarn guide head comprises a yarn guide head, a base rod, a toothed ring and a piezoelectric ceramic sheet, the two ends of the base rod are provided with toothed ring mounting countersunk holes whose axes intersect with the axis of the base rod, each toothed ring mounting countersunk hole is provided with a toothed ring and a piezoelectric ceramic sheet arranged from the inside to the outside, the toothed ring at one end of the base rod is passed through a shaft sleeve, a square shaft is passed through the inner hole of the shaft sleeve, and both ends of the square shaft are cantilevered out of the toothed ring mounting countersunk hole; a connector is passed through the toothed ring at the other end of the base rod, the yarn guide head is installed against the end of the base rod and is located at the bottom of the toothed ring mounting countersunk hole, the yarn guide head is provided with a hole corresponding to the toothed ring mounting countersunk hole, the bottom of the connector extends into the hole and is fixed to the yarn guide head by rivets.

[0005] As a supplement and improvement to the above technical solution, the present invention also includes the following technical features.

[0006] A wave spring is provided at the bottom of the toothed ring mounting countersunk hole provided with a connector, one end of the wave spring is pressed against the toothed ring and the connector, and the other end is pressed against the yarn guide head. The wave spring presses the toothed ring and the connector, so that the connector can press the toothed ring.

[0007] The connector is provided with a square boss which extends into the hole on the yarn guide head. The hole on the yarn guide head is a square hole. The connector is fixedly connected to the square hole of the yarn guide head through the square boss.

[0008] A compression gasket sleeved on the square shaft is arranged on the outer side of the shaft sleeve, and the compression gasket is used to compress the gear ring and the shaft sleeve.

[0009] The shaft sleeve is tapered, and the toothed portion on the inner hole of the toothed ring matched with the shaft sleeve is tapered to match the tapered shaft sleeve.

[0010] A groove for accommodating the yarn guide head is arranged at the bottom of one end of the base rod provided with the connector, and part of the yarn guide head is accommodated in the groove.

[0011] The toothed ring is fixed in the toothed ring mounting countersunk hole by adhesive, and the piezoelectric ceramic sheet is fixed to the surface of the toothed ring by adhesive.

[0012] The present invention can achieve the following beneficial effects: 1. The present invention integrates the drive of the yarn guide head onto the yarn guide head, replacing the driving method of the pneumatic device in the prior art. There is no need to process complex air paths and sealing devices, which effectively simplifies the parts structure, significantly improves the processing efficiency, and reduces the processing cost. 2. The present invention realizes the movement of the yarn guide head through piezoelectric technology, which has the characteristics of power-off self-locking. When the yarn guide head moves to the work station, the power supply can be disconnected, effectively reducing energy consumption. The present invention can control the movement position of the yarn guide head by setting parameters through software, without the need to install complex mechanical positioning devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the explosion structure of the present invention.

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0015] Figure 3 It is a schematic diagram of the toothed ring in the present invention.

[0016] Figure 4 yes Figure 3 AA section view in .

[0017] Figure 5a and Figure 5b It is a schematic diagram of the shaft sleeve in the present invention.

[0018] Figure 6a and Figure 6b It is a schematic diagram of a connector in the present invention.

[0019] Figure 7 It is a schematic diagram of the piezoelectric ceramic sheet in the present invention.

[0020] Figure 8 It is a schematic diagram of the piezoelectric actuation principle in the present invention. DETAILED DESCRIPTION

[0021] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. The described embodiments are only for illustration and explanation of the present invention and do not constitute the sole limitation of the present invention.

[0022] like Figure 1-Figure 8 As shown, the present invention includes a yarn guide head, a base rod 1, a toothed ring 2 and a piezoelectric ceramic sheet 3, wherein both ends of the base rod are provided with toothed ring mounting countersunk holes whose axes intersect with the axis of the base rod, and each toothed ring mounting countersunk hole is provided with a toothed ring and a piezoelectric ceramic sheet arranged from the inside to the outside, and the toothed ring at one end of the base rod is passed through a shaft sleeve, and a square shaft 7 is passed through and connected to the inner hole of the shaft sleeve, and both ends of the square shaft 7 are cantilevered out of the toothed ring mounting countersunk hole; a connector 4 is passed through the toothed ring at the other end of the base rod, and the yarn guide head is installed against the end of the base rod and is located at the bottom of the toothed ring mounting countersunk hole, and a hole corresponding to the toothed ring mounting countersunk hole is provided on the yarn guide head, and the bottom of the connector extends into the hole and is fixed to the yarn guide head by a rivet 10.

[0023] A wave spring 9 is provided at the bottom of the countersunk hole for mounting the toothed ring provided with a connector. One end of the wave spring is pressed against the toothed ring and the connector, and the other end is pressed against the yarn guide head. The wave spring presses the toothed ring and the connector, so that the connector can press the toothed ring. The connector has a square boss extending into the hole on the yarn guide head. The hole on the yarn guide head is a square hole. The connector is fixedly connected to the square hole of the yarn guide head through the square boss. A compression gasket 8 is provided on the outside of the sleeve and is fitted on the square shaft. The compression gasket is used to compress the toothed ring and the sleeve. The sleeve is conical, and the teeth on the inner hole of the toothed ring that matches the sleeve are conical to match the tapered sleeve. A groove for accommodating the yarn guide head is provided at the bottom of one end of the base rod provided with a connector, and part of the yarn guide head is accommodated in the groove. The gear ring is fixed in the gear ring mounting countersunk hole by adhesive, and the piezoelectric ceramic sheet is fixed to the surface of the gear ring by adhesive.

[0024] Piezoelectric ceramic chip Figure 7 As shown, when the current of the corresponding phase is passed, the movable teeth of the gear ring can produce corresponding elliptical motion, that is, when the movable teeth move clockwise, the inner ring (sleeve 6 or connector 4) tends to move counterclockwise due to the effect of friction. When the current is passed in the opposite direction, the motion will also be reversed. Since the sleeve 6 is connected to the square shaft 7 and is fixed, the gear ring 2 and the base rod 1 will move counterclockwise. At the other end of the base rod 1, the connector 4 and the yarn guide head 5 move counterclockwise due to the movement of the movable teeth. Therefore, in actual operation, currents of different periods and phases can be passed through the two piezoelectric ceramic sheets to make the base rod 1 rotate around the square shaft 7 to form a specific angle, and the yarn guide head 5 rotates around the base rod 1 to form another specific angle, so that the head of the yarn guide head 5 can reach the specified position for yarn guiding.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A piezoelectrically actuated yarn guide head, characterized in that: The piezoelectrically actuated yarn guide head comprises a yarn guide head, a base rod, a toothed ring and a piezoelectric ceramic sheet. Both ends of the base rod are provided with toothed ring mounting countersunk holes whose axes intersect with the axis of the base rod. Each toothed ring mounting countersunk hole is provided with a toothed ring and a piezoelectric ceramic sheet arranged from the inside to the outside. The toothed ring at one end of the base rod is passed through a shaft sleeve, and a square shaft is passed through the inner hole of the shaft sleeve, and both ends of the square shaft are cantilevered out of the toothed ring mounting countersunk hole; a connector is passed through the toothed ring at the other end of the base rod, and the yarn guide head is installed against the end of the base rod and is located at the bottom of the toothed ring mounting countersunk hole. The yarn guide head is provided with a hole corresponding to the toothed ring mounting countersunk hole, and the bottom of the connector extends into the hole and is fixed to the yarn guide head by rivets.

2. A piezoelectrically actuated yarn guide head according to claim 1, characterized in that: A wave spring is provided at the bottom of the toothed ring mounting countersunk hole provided with a connector, one end of the wave spring is pressed against the toothed ring and the connector, and the other end is pressed against the yarn guide head. The wave spring presses the toothed ring and the connector, so that the connector can press the toothed ring.

3. A piezoelectrically actuated yarn guide head according to claim 2, characterized in that: The connector is provided with a square boss which extends into the hole on the yarn guide head. The hole on the yarn guide head is a square hole. The connector is fixedly connected to the square hole of the yarn guide head through the square boss.

4. A piezoelectrically actuated yarn guide head according to claim 3, characterized in that: A compression gasket sleeved on the square shaft is arranged on the outer side of the shaft sleeve, and the compression gasket is used to compress the gear ring and the shaft sleeve.

5. A piezoelectrically actuated yarn guide head according to claim 4, characterized in that: The shaft sleeve is tapered, and the toothed portion on the inner hole of the toothed ring matched with the shaft sleeve is tapered to match the tapered shaft sleeve.

6. A piezoelectrically actuated yarn guide according to claim 5, characterized in that: A groove for accommodating the yarn guide head is arranged at the bottom of one end of the base rod provided with the connector, and part of the yarn guide head is accommodated in the groove.

7. A piezoelectrically actuated yarn guide according to claim 6, characterized in that: The toothed ring is fixed in the toothed ring mounting countersunk hole by adhesive, and the piezoelectric ceramic sheet is fixed to the surface of the toothed ring by adhesive.

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