CN108927301B

CN108927301B - Fluid microjet device and execution system thereof

Info

Publication number: CN108927301B
Application number: CN201710370761.XA
Authority: CN
Inventors: 闵继江; 孙培; 冒洋洋; 郜福亮
Original assignee: Changzhou Mingseal Robotic Technology Co Ltd
Current assignee: Changzhou Mingseal Robotic Technology Co Ltd
Priority date: 2017-05-23
Filing date: 2017-05-23
Publication date: 2024-05-24
Anticipated expiration: 2037-05-23
Also published as: CN108927301A

Abstract

The invention discloses an execution system of a fluid micro-injection device and the fluid micro-injection device with the same, wherein the execution system comprises: comprising the following steps: a base; a movable element; the lever is arranged in the actuating mechanism mounting cavity, two ends of the lever are movable, and the first end of the lever is connected with the movable element to control the movable element to move; the swinging pin shaft is arranged in the actuating mechanism mounting cavity, and the second end of the lever is connected with the swinging pin shaft to pivot around the swinging pin shaft; an actuator; an actuator; a controller; the adjusting element is arranged in the actuating mechanism installation cavity and connected with the actuator to adjust the working position of the actuator. According to the execution system of the fluid micro-ejection device, the pretightening force of the execution mechanism can be adjusted, so that the movable displacement of the movable element is adjusted to adjust the fluid ejection effect of the fluid micro-ejection device.

Description

Fluid microjet device and execution system thereof

Technical Field

The present invention relates to an execution system of a fluid microjet device and a fluid microjet device having the same.

Background

The conventional fluid micro-injection device adopts a flexible hinge mechanism or an operating element to drive a closing element to move secondarily through a lever so as to realize fluid micro-injection. The secondary movement causes abrasion to both ends of the closing element, the replacement frequency is increased, and the maintenance cost is increased; the height of the closing element can not be adjusted or the adjustment precision is not high, so that the impact force required by the fluid injection is not adjustable or the adjustment is not accurate, and the fluid injection effect is not satisfied; the installation and the disassembly of related accessories are complicated, so that the assembly efficiency is low, and the maintenance and the replacement are inconvenient.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, the invention provides an execution system of the fluid micro-injection device, which has the advantages of convenient accuracy adjustment and good fluid injection effect.

The invention also provides a fluid micro-injection device with the execution system.

An execution system of a fluid microjet device according to an embodiment of the first aspect of the present invention includes: the device comprises a base body, wherein an execution mechanism mounting cavity is defined in the base body, and a positioning hole communicated with the execution mechanism mounting cavity is formed in the base body; the movable element is movably arranged in the positioning hole; the lever is arranged in the actuating mechanism mounting cavity, two ends of the lever are movable, and the first end of the lever is connected with the movable element to control the movable element to move; the swinging pin shaft is arranged in the actuating mechanism mounting cavity, and the second end of the lever is connected with the swinging pin shaft to pivot around the swinging pin shaft; the actuator is telescopically arranged in the actuating mechanism mounting cavity and is connected with the second end of the lever to control the lever to move; the actuator is telescopically arranged in the actuator mounting cavity, the axis of the actuator is parallel to the axis of the actuator and is connected with the second end of the lever to adjust the pretightening force of the actuator, the axis of the swing pin shaft is perpendicular to the axis of the actuator and is positioned between the actuator and the actuator in the horizontal direction, and the controller is connected with the actuator to control the actuator to stretch and retract; and the adjusting element is arranged in the actuating mechanism mounting cavity and is connected with the actuator to adjust the working position of the actuator.

According to the execution system of the fluid micro-ejection device, the execution element and the adjusting element are arranged, so that the pretightening force of the actuator can be accurately adjusted after the execution system is assembled, and the fluid ejection effect of the fluid micro-ejection device can be adjusted.

According to one embodiment of the invention, the swing pin is formed in a column shape, a positioning groove suitable for installing the swing pin is formed in the base body, a matching concave surface matched with the swing pin is formed in the lower surface of the second end of the lever, and the swing pin is arranged between the positioning groove and the matching concave surface.

According to one embodiment of the invention, the cross section of the positioning groove is formed into a circular arc shape, the radius of the positioning groove is equal to the radius of the swinging pin shaft, and the cross section of the matching concave surface is formed into a circular arc shape, and the radius of the matching concave surface is larger than the radius of the swinging pin shaft.

According to one embodiment of the invention, one end of the swing pin is provided with an end boss which abuts against the bottom surface of the second end of the lever to limit the mounting height of the lever.

According to one embodiment of the invention, the lever is provided with a shaft sleeve matched with the pin shaft, and the shaft sleeve is sleeved on the pin shaft and can pivot around the pin shaft.

According to one embodiment of the invention, the adjusting element is arranged at the upper end of the actuator, an actuator upper jacking block is arranged between the adjusting element and the upper end of the actuator, an actuator lower jacking block is arranged between the lower end of the actuator and the second end of the lever, and the actuator lower jacking block is stopped against the lower end of the actuator and the second end of the lever.

According to one embodiment of the invention, the lower surface of the adjustment element is formed as an upwardly concave arcuate surface, the upper surface of the actuator upper top block is formed as an upwardly convex arcuate surface, and the radius of the upper surface of the actuator upper top block is smaller than the radius of the lower surface of the adjustment element.

According to one embodiment of the invention, the upper surface of the second end of the lever is provided with a first protrusion, the cross section of which is formed as a circular arc, the lower surface of the actuator lower top block is provided with a recess, the cross section of which is formed as a circular arc and the radius of which is smaller than the radius of the recess.

According to one embodiment of the invention, the lower surface of the first end of the lever is provided with a second projection, the section of which is formed in the shape of a circular arc and which stops against the upper end face of the movable element.

According to one embodiment of the invention, the base body is provided with an actuator adjustment hole, and the execution system further comprises: the actuator pre-tightening screw is movably arranged in the actuator adjusting hole and is connected with the actuator upper jacking block to adjust the pre-tightening force of the actuator.

According to one embodiment of the invention, the actuator pretension screw is threadedly connected with the actuator adjustment aperture, and the implement system further comprises an actuator lockscrew threadedly connected with the actuator adjustment aperture and abutting the actuator pretension screw.

According to one embodiment of the invention, the actuator pretension screw is connected to the base body by means of a lock nut.

According to one embodiment of the invention, the actuator is formed as an actuator spring, the base body is provided with an actuator spring adjustment hole, and the actuator system further comprises: the execution spring upper jacking block is movably arranged on the base body and is connected with the upper end of the execution spring; the execution spring pre-tightening screw is movably arranged in the execution spring adjusting hole and is connected with the execution spring upper jacking block to adjust the pre-tightening force of the execution spring; the execution spring lower jacking block is arranged between the lower end of the execution spring and the lever and is stopped against the second ends of the execution spring and the lever.

According to one embodiment of the invention, the execution sprung top piece comprises: the upper ejector block small shaft is inserted into the upper end of the execution spring; the radial dimension of the upper ejector block stop part is larger than that of the upper ejector block small shaft and is stopped against the upper end of the execution spring; the upper ejector block guide shaft is movably inserted into the execution spring adjusting hole along the axial direction of the execution spring adjusting hole.

According to one embodiment of the invention, the actuator spring pretension screw is screwed with the actuator spring adjustment aperture, the actuator system further comprising an actuator spring lock screw screwed with the actuator spring adjustment aperture and abutting the actuator spring pretension screw.

According to one embodiment of the invention, the actuator spring pretension screw is connected to the actuator spring adjustment aperture by means of a lock nut.

According to one embodiment of the invention, the upper end of the lower ejector block of the execution spring is provided with a lower ejector block small shaft, the lower ejector block small shaft is inserted into the lower end of the execution spring, the upper surface of the second end of the lever is provided with a third bulge, the section of the third bulge is formed into a circular arc shape, the lower surface of the lower ejector block of the execution spring is provided with a notch, the section of the notch is formed into a circular arc shape, and the radius of the third bulge is smaller than that of the notch.

A fluid microjet device according to an embodiment of the second aspect of the present invention includes an execution system of the fluid microjet device according to the above embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an implementation system of a fluid microjet device, in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a base body of an actuator system of a fluid microjet device, in accordance with an embodiment of the present invention;

Fig. 3 is a schematic structural view of a lever of an actuator system of the fluid microjet device according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a swing pin of an actuator system of the fluid microjet device according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the movable elements of an actuator system of a fluid microjet device, in accordance with an embodiment of the present invention;

fig. 6 is a schematic structural view of a guide holder of an actuator system of the fluid microjet device according to an embodiment of the present invention;

FIG. 7 is a schematic view showing the structure of an actuator upper top block of an actuator system of the fluid micro-ejection device according to the embodiment of the present invention;

Fig. 8 is a schematic structural view of an actuator lower top block of an actuator system of the fluid microjet device, in accordance with an embodiment of the present invention;

Fig. 9 is a schematic structural view of an adjusting element of an actuator system of the fluid microjet device according to an embodiment of the present invention;

fig. 10 is a schematic structural view of an actuating sprung roof of an actuating system of a fluid microjet device according to an embodiment of the present invention;

FIG. 11 is a schematic view showing the structure of an actuator unsprung mass of an actuator system of a fluid microjet device, in accordance with an embodiment of the present invention;

Fig. 12 is a schematic structural view of an actuator system of a fluid microjet device according to another embodiment of the present invention.

Reference numerals:

Executing the system 100;

a base 110; an actuator mounting cavity 111; a positioning hole 112; a positioning groove 113; a controller mounting cavity 114; an actuator adjustment aperture 115; a implement spring adjustment aperture 116;

A movable element 120; a cylindrical shaft 121; ball 122; an upper platform 123;

an adjustment element 130;

a lever 141; mating concave 1411; a first protrusion 1412; a second protrusion 1413; a third protrusion 1414;

an actuator 142; a controller 143; an actuator upper top block 144; an actuator lower jack 145; recess 1451; swing pin 146; an end boss 1461; a sleeve 147; an actuator pretension screw 148; an actuator lock screw 149;

A guide holder 150; a guide hole 151; positioning boss 152; mounting slots 1521; an upper convex cylinder 153;

A first elastic member 160;

An actuator 180; an upper spring jack 181 is performed; an upper top block small shaft 1811; an upper top block stop 1812; an upper top block guide shaft 1813; a spring pre-tightening screw 182 is performed; an execution spring lower jack 183; a lower top block small shaft 1831; notch 1832; a spring lock screw 184 is implemented;

A lock nut 190.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

An implementation system 100 of a fluid microjet device according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 12, an actuating system 100 of a fluid microjet device according to an embodiment of the present invention includes a base 110, a movable member 120, a lever 141, a swing pin 146, an actuator 142, an actuating member 180, a controller 143, and an adjusting member 130.

Specifically, the base 110 defines an actuator mounting cavity 111 therein, the base 110 is provided with a positioning hole 112 in communication with the actuator mounting cavity 111, the movable element 120 is movably disposed in the positioning hole 112, the lever 141 is disposed in the actuator mounting cavity 111 and two ends of the lever 141 are movable, and a first end of the lever 141 is connected to the movable element 120 to control the movable element 120 to move. The swing pin 146 is arranged in the actuator mounting cavity 111, the second end of the lever 141 is connected with the swing pin 146 to pivot around the swing pin 146, the actuator 142 is telescopically arranged in the actuator mounting cavity 111, the actuator 142 is connected with the second end of the lever 141 to control the lever 141 to move, the actuator 180 is telescopically arranged in the actuator mounting cavity 111, the axis of the actuator 180 is parallel to the axis of the actuator 142 and connected with the second end of the lever 141 to adjust the pretightening force of the actuator 142, the axis of the swing pin 146 is perpendicular to the axis of the actuator 142 and the axis of the actuator 180 and is positioned between the actuator 142 and the actuator 180 in the horizontal direction, the adjusting element 130 is connected with the actuator 142 to adjust the actuating position of the actuator, and the controller 143 is connected with the actuator 142 to control the actuator 142 to stretch.

As shown in fig. 1 and 2, the base 110 is provided with an actuator mounting cavity 111 and a positioning hole 112, most parts of the actuator system are mounted in the actuator mounting cavity 111, the movable element 120 is disposed in the positioning hole 112 and cooperates with the actuator 142 to be driven by the actuator 142, the adjusting element 130 is disposed in the actuator mounting cavity 111 and connected with the actuator 142 to adjust the working position of the actuator 142, the actuator 142 and the actuator 180 are respectively disposed in the actuator mounting cavity 111 and connected with the second end of the lever 141, the actuator 142 and the actuator 180 are horizontally positioned at two sides of the swing pin 146, namely at two sides of the pivot shaft of the lever 141, and the actuator 180 is telescopic to adjust the working position of the lever 141 to adjust the pretightening force of the actuator 142, so that the actuator 142 achieves a better initial movement state to achieve the purpose of adjusting the fluid injection effect of the injection system 100.

The left end in fig. 1 and 2 is a first end of the lever 141, the right end in fig. 1 is a second end of the lever 141, the lever 141 is rotatable around an axis along a horizontal direction, and the left end of the lever 141 is connected to an upper end of the movable element 120 to drive the movable element 120 to move in an up-down direction when moving up-down. The actuator 142 is provided at the right end of the lever 141 and is retractable in the up-down direction, the lower end of the actuator 142 is connected to the right end of the lever 141, and the actuator 142 is retractable in the up-down direction to press or release the right end of the lever 141. The adjusting element 130 is connected to the upper end of the actuator 142 and can adjust the pretightening force of the actuator 142, so as to adjust the acting force of the actuator 142 pressing the right end of the lever 141 downward, so that the actuator 142 reaches a better initial state of movement, and the movement displacement of the movable element 120 is realized by different displacements of the actuator 142 generated under different voltages. In addition, a controller mounting cavity 114 for mounting a controller 143 may be provided in the base 110.

It should be noted that, the fluid micro-ejection device according to the embodiment of the present invention may be composed of an execution system 100 and a flow channel assembly, where the execution system 100 is mainly used for controlling the operation of the movable element 120, the flow channel assembly is provided with a flow channel that is in fluid communication with the fluid containing structure, and the execution system 100 can open or close the nozzle of the flow channel assembly when being matched with the flow channel assembly by controlling the operation or non-operation and the displacement of the movable element 120, thereby achieving the purpose of opening and closing the fluid micro-ejection device or adjusting the ejection effect of the fluid micro-ejection device. The construction of the flow channel assembly is understood and readily implemented by those skilled in the art and will not be described in detail.

Thus, according to the execution system 100 of the embodiment of the present invention, by providing the execution element 180 and the adjustment element 130, the pretightening force of the actuator 142 can be precisely adjusted after the execution system 100 is assembled, and the movable displacement of the movable element 120 can be conveniently adjusted by the cooperation of the lever 141, the actuator 142, the adjustment element 130 and the execution element 180, so as to adjust the fluid ejection effect of the fluid micro-ejection device.

According to an embodiment of the present invention, the swing pin 146 is formed in a column shape, the base 110 is provided with a positioning groove 113 adapted to mount the swing pin 146, the lower surface of the second end of the lever 141 is provided with a mating concave 1411 mated with the swing pin 146, and the swing pin 146 is disposed between the positioning groove 113 and the mating concave 1411.

Specifically, as shown in fig. 1 and 2, a positioning groove 113 is formed on the base 110, a swing pin 146 is formed in the positioning groove 113, a mating concave 1411 is formed on the lower surface of the right end of the lever 141, the mating concave 1411 mates with the swing pin 146, and the lever 141 is pivotally disposed in the actuator mounting cavity 111 around the axis of the swing pin 146. It should be noted that the axis of the actuator 142 is offset from the axis of the swing pin 146 in the horizontal direction, and in the present application, the contact point of the actuator 142 with the lever 141 is located on the left side of the swing pin 146, that is, the contact point of the lever 141 with the movable element 120 and the contact point of the lever 141 with the actuator 142 are located on the same side of the swing pin 146. Thus, when the actuator 142 expands and contracts, the movable displacement of the right end of the lever 141 caused by the force applied to the right end of the lever 141 can be amplified at the left end of the lever 141, so that the displacement of the movable element 120 can be conveniently adjusted by performing small displacement adjustment at the right end of the lever 141, and the adjustment is more convenient and accurate.

In some embodiments of the present invention, the cross section of the positioning groove 113 is formed into a circular arc shape, and the radius of the positioning groove 113 is equal to the radius of the swinging pin 146, so that the swinging pin 146 can be positioned in the positioning groove 113 to keep still, the cross section of the matching concave 1411 is formed into a circular arc shape, and the radius of the matching concave 1411 is larger than the radius of the swinging pin 146, which is beneficial to forming rotation line contact, reducing friction influence, and ensuring displacement and force transmission of the actuator 142.

Alternatively, according to one embodiment of the present invention, one end of the swing pin 146 is provided with an end boss 1461, and the end boss 1461 is stopped against the bottom surface of the second end of the lever 141 to limit the installation height of the lever 141. Specifically, as shown in fig. 4, one end of the swing pin 146 is provided with a semicircular end boss 1461, and the end boss 1461 abuts against the bottom surface of the right end of the lever 141, so as to limit the mounting height of the lever 141, thereby facilitating assembly.

In other embodiments of the present invention, the lever 141 is provided with a sleeve 147 that cooperates with the swing pin 146, and the sleeve 147 is sleeved on the moving pin 146 and is pivotable about the moving pin 146.

Specifically, as shown in fig. 12, in the present embodiment, the shaft sleeve 147 is used to form the swinging shaft in cooperation with the swinging pin 146, so that the effect of rotating the lever 141 around the swinging shaft can be achieved, and the up-down position of the lever 141 can be limited.

As shown in fig. 1, in some embodiments of the present invention, the adjustment element 130 is disposed at an upper end of the actuator 142, and an actuator upper jack 144 is disposed between the adjustment element 130 and the upper end of the actuator 142, and an actuator lower jack 145 is disposed between a lower end of the actuator 142 and a second end of the lever 141, the actuator lower jack 145 abutting against the lower end of the actuator 142 and the second end of the lever 141.

That is, the upper and lower ends of the actuator 142 are respectively provided with a top block structure to prevent the actuator 142 from directly contacting the lever 141 or the base 110, wherein the upper end of the actuator 142 is provided with an actuator upper top block 144, the lower end of the actuator 142 is provided with an actuator lower top block 145, the actuator 142 is stopped against the adjusting member 130 by the actuator upper top block 144, and the actuator 142 is stopped against the lever 141 by the actuator lower top block 145.

According to one embodiment of the present invention, the lower surface of the adjustment member 130 is formed as an upwardly concave arc surface, the upper surface of the actuator upper top block 144 is formed as an upwardly convex arc surface, and the radius of the upper surface of the actuator upper top block 144 is smaller than the radius of the lower surface of the adjustment member 130.

As shown in fig. 1, in the present application, the surfaces of the adjustment member 130 to be mated with the actuator upper top block 144 are respectively formed as arc surfaces, whereby lateral displacement of the actuator 142 can be defined, and the convex radius of the upper surface of the actuator upper top block 144 is smaller than the concave radius of the adjustment member 130, whereby point contact can be formed, facilitating automatic adjustment of the spatial position of the actuator 142.

Alternatively, in some embodiments of the present invention, the upper surface of the second end of the lever 141 is provided with a first protrusion 1412, the first protrusion 1412 is formed in a circular arc shape in cross section, the lower surface of the actuator lower top block 145 is provided with a recess 1451, the recess 1451 is formed in a circular arc shape in cross section, and the radius of the first protrusion 1412 is smaller than the radius of the recess 1451.

Further, a lower surface of the first end of the lever 141 is provided with a second protrusion 1413, and a cross section of the second protrusion 1413 is formed in a circular arc shape and abuts against an upper end surface of the movable element 120.

Specifically, as shown in fig. 1 and 3, the upper surface of the right end of the lever 141 is provided with a first protrusion 1412, the lower surface of the actuator lower top block 145 is provided with a recess 1451, and the radius of the recess is larger than that of the convex surface of the protrusion, so that line contact is facilitated, friction influence is reduced, and displacement and force transmission of the actuator 142 are ensured. The lower surface of the left end of the lever 141 is provided with a second protrusion 1413, and the second protrusion 1413 abuts against the upper end surface of the movable element 120, so that the arc-shaped protrusion structure is beneficial to forming line contact, and the friction effect is reduced.

The lever 141 has a high rigidity structure, so that each contact surface is ensured not to deform to influence the transmission of displacement and impact force in the long-term working process.

According to one embodiment of the present invention, the base 110 is provided with an actuator adjustment aperture 115, and the implement system 100 further includes an actuator pretension screw 148, the actuator pretension screw 148 being movably disposed within the actuator adjustment aperture 115 and coupled to the actuator upper top block 144 to adjust the pretension of the actuator 142.

Alternatively, as shown in FIG. 1, in some embodiments of the present invention, the actuator pre-tension screw 148 is threadably coupled to the actuator adjustment aperture 115, and the implement system 100 further includes an actuator anti-loose screw 149, the actuator anti-loose screw 149 being threadably coupled to the actuator adjustment aperture 115 and abutting the actuator pre-tension screw 148.

That is, the lower end of the actuator pre-tightening screw 148 is formed in a spherical shape and is matched with the upper plane of the adjusting element 130, so that point contact is ensured when the pre-tightening force is applied to the piezoelectric actuator 142, the piezoelectric actuator 142 is not damaged in the assembly process, the actuator pre-tightening screw 148 is matched with the mounting thread of the actuator system base 110, and fine threads are adopted, so that fine adjustment of the pre-tightening force is ensured.

The lower end of the actuator lock screw 149 is formed into a flat surface that mates with the flat surface of the upper end of the actuator pre-tightening screw 148, preventing the actuator pre-tightening screw 148 from loosening during operation, thereby affecting the pre-tightening force applied, the actuator lock screw 149 mates with the mounting threads of the actuator system base 110, and employs fine threads to secure the locking of the actuator pre-tightening screw 148.

In other embodiments of the present invention, as shown in FIG. 12, the actuator pretension screw 148 is coupled to the base 110 by a lock nut 190. Thus, the lock nut 190 is engaged with the base 110 to perform the locking function as well.

According to one embodiment of the present invention, the actuator 180 is formed as an actuator spring, the base 110 is provided with an actuator spring adjustment aperture 116, and the actuator system 100 further includes an actuator spring top block 181, an actuator spring pre-tension screw 182, and an actuator spring bottom block 183.

Wherein, the upper top block 181 of the execution spring is movably arranged on the base 110 and connected with the upper end of the execution spring, the pre-tightening screw 182 of the execution spring is movably arranged in the adjustment hole 116 of the execution spring and connected with the upper top block 181 of the execution spring to adjust the pre-tightening force of the execution spring, and the lower top block 183 of the execution spring is arranged between the lower end of the execution spring and the lever 141 and stops against the second ends of the execution spring and the lever 141.

Specifically, the upper end surface of the execution spring is perpendicular to the spring axis and is in close contact with the bottom plane of the upper execution spring ejector block 181, so that the execution spring pretension screw 182 is convenient to apply pretension force to the execution spring, the lower end surface of the execution spring is perpendicular to the spring axis and is in close contact with the upper plane of the lower execution spring ejector block 183, reverse force is transmitted to the piezoelectric actuator 142 through the lever 141, the application of pretension force to the piezoelectric actuator 142 is realized, the force value is stable, and the inner diameter of the execution spring is matched with the lower execution spring ejector block 183 and the upper execution spring ejector block 183, so that the position stability of the spring is convenient to be ensured. The fitting structure of the execution spring pre-tightening screw 182 with the base 110 and the fitting structure of the execution spring pre-tightening screw 182 with the base 110 are similar, and thus will not be described in detail.

In some embodiments of the present invention, the actuator spring upper ram 181 includes an upper ram small shaft 1811, an upper ram stop 1812, and an upper ram guide shaft 1813. The upper ejector pin shaft 1811 is inserted into the upper end of the actuating spring, the radial dimension of the upper ejector pin stop portion 1812 is larger than the radial dimension of the upper ejector pin shaft 1811 and abuts against the upper end of the actuating spring, and the upper ejector pin guide shaft 1813 is movably inserted into the actuating spring adjusting hole 116 along the axial direction of the actuating spring adjusting hole 116. Therefore, the execution spring upper ejector block 181 of the structure can effectively limit the position of the execution spring, ensure the acting force direction, facilitate the application of axial acting force to the execution spring and facilitate the transmission of pretightening force.

Alternatively, as shown in FIG. 1, according to one embodiment of the present invention, the implement spring pretension screw 182 is threadably coupled to the implement spring adjustment aperture 116, and the implement system further includes an implement spring lock screw 184, the implement spring lock screw 184 being threadably coupled to the implement spring adjustment aperture 116 and abutting the implement spring pretension screw 182.

In other embodiments of the present invention, as shown in FIG. 12, the implement spring pretension screw 182 is coupled to the implement spring adjustment aperture 116 by a lock nut 190. The mating structure of the actuator spring lock screw 184 and the base 110 is similar to the mating structure of the actuator spring lock screw 18 and the base 110 described above, and will not be described in detail.

According to one embodiment of the present invention, the upper end of the lower top block 183 of the actuating spring is provided with a lower top block small shaft 1831, the lower top block small shaft 1831 is inserted into the lower end of the actuating spring, the upper surface of the second end of the lever 141 is provided with a third protrusion 1414, the cross section of the third protrusion 1414 is formed in a circular arc shape, the lower surface of the lower top block 183 of the actuating spring is provided with a notch 1832, the cross section of the notch 1832 is formed in a circular arc shape, and the radius of the third protrusion 1414 is smaller than the radius of the notch. The fitting structure of the actuating lower spring jack 183 with the lever 141 and the fitting structure of the actuator lower jack 145 with the lever 141 are similar, and thus will not be described in detail.

According to an embodiment of the present invention, the execution system 100 of the fluid microjet device further includes a guide holder 150, the guide holder 150 is disposed in the positioning hole 112, a guide hole 151 penetrating along an axial direction of the guide holder 150 is disposed in the guide holder 150, and the movable element 120 is movably disposed on the guide holder 150 along the axial direction of the guide hole 151. Thus, the moving track of the moving element 120 can be ensured, and the running stability thereof can be improved.

Alternatively, as shown in FIG. 5, the movable member 120 includes a cylindrical shaft 121 and an upper platform 123. The cylindrical shaft 121 is movably disposed in the guide hole 151 along an axial direction thereof, a lower end of the cylindrical shaft 121 is formed as a ball head 122, an upper end platform 123 is disposed at an upper end of the cylindrical shaft 121, a size of the upper end platform 123 is larger than a radius of the cylindrical shaft 121, and a first elastic element 160 is disposed between the upper end platform 123 and the guide seat 150.

The cylindrical shaft 121 is perpendicular to the upper platform 123 and cooperates with the guide hole 151 to move the movable member 120 up and down along the guide hole 151, and the ball 122 is in coaxial and close contact with the nozzle axis of the flow path assembly so that the fluid can be sealed in the flow path assembly.

Therefore, by arranging the first elastic element 160 between the movable element 120 and the guide seat 150, after the acting force of the lever 141 on the movable element 120 disappears, the movable element 120 can return to the initial position under the action of the restoring force of the first elastic element 160, so that the flow channel assembly can be switched and regulated, and the use and the operation are more convenient.

In some embodiments of the present invention, the guide holder 150 includes a positioning boss 152 and an upper protruding cylinder 153, wherein the positioning boss 152 is detachably disposed in the positioning hole 112, for example, may be a threaded connection, when the positioning boss 152 is screwed with the positioning hole 112 of the base 110, a bottom surface of the positioning boss 152 is flush with a bottom surface of the base 110, and an axis of the guide holder 150 is coaxial with the positioning hole 112 and perpendicular to the bottom surface of the base 110.

The upper protruding cylinder 153 is disposed on the upper portion of the positioning boss 152 and is coaxially disposed with the positioning boss 152, the radial dimension of the upper protruding cylinder 153 is smaller than that of the positioning boss 142, the guide hole 151 penetrates through the upper protruding cylinder 153 and the positioning boss 152, and the first elastic element 160 is formed as a spring sleeved on the upper protruding cylinder 153, and two ends of the spring respectively stop against the positioning boss 152 and the upper end platform 123. Therefore, the guide seat 150 of the structure is matched with the spring, so that the spring assembly is stable, and meanwhile, the upper end platform 123 transmits the reverse force of the first elastic element 60 to the base 110, so that the force value is stable.

In addition, the positioning boss 152 may further be provided with a mounting slot 1521, so as to facilitate the embedded cooperation of the positioning boss 152 and the installation and the disassembly of the guide holder 150 and the base 110.

The following specifically describes the assembly process and assembly features of the execution system 100 of the fluid microjet device according to an embodiment of the present invention.

First, the swing pin 146 is fitted into the positioning groove 113, and the end boss 1461 of the swing pin 146 is downward.

Next, the upper actuator block 181, the actuator spring 4, and the lower actuator block 183 are installed in the actuator system base 110, the upper actuator block guide shaft 1813 of the actuator spring is installed in the actuator spring adjustment hole 116 of the actuator system base 110, and the inner diameters of the actuator springs are installed on the upper actuator block small shaft 1811 and the lower actuator block small shaft 1831, and the upper and lower actuator spring planes are ensured to be matched with the upper actuator block 183 and the upper actuator block 181.

Then, the lever 141 is then assembled, the fitting concave 1411 of the lever 141 is assembled with the swing pin 146, the left end is fitted to the upper end face of the second elastic member 180, and the lower plane is fitted to the boss face of the end boss 1461.

The adjusting element 130, the actuator upper jack 144, the actuator 142, and the actuator lower jack 145 are sequentially assembled into the base 110, the side elevation of the adjusting element 130 is engaged with the side elevation of the base 110, and the notch 1451 of the actuator lower jack 145 is engaged with the first protrusion 1412 on the right end of the lever 141.

The actuator pre-tightening screw 148, the actuator spring pre-tightening screw 182 are then installed and the spherical surface is brought into planar contact with the upper surfaces of the actuator adjustment member 130, the upper top block guide shaft 1813, and the piezoelectric actuator 142 is brought into the desired pre-tightening force by adjusting the corresponding screw-in depth, and then the actuator anti-loosening screw 149, the actuator spring pre-tightening screw 184 are installed and brought into close contact with the actuator pre-tightening screw 148, the actuator spring pre-tightening screw 182.

Finally, the movable element 120, the first elastic element 160 and the guide holder 150 are assembled together, and then screwed into the positioning hole 112 through the threads on the guide holder 150. Thus, the assembly of the actuator system 100 of the fluid microjet device can be realized, the respective components are closely matched, and the degrees of freedom other than the degree of freedom of the swing of the lever 141 are limited to zero.

The assembly features of the components of the actuator system 100 of the fluid microjet device are as follows:

The actuator 142, the upper actuator top block 144 and the lower actuator top block 145 need to be tightly assembled, and can be bonded. During bonding, the three pieces of the measuring block are required to be calibrated, so that the sphere center of the upper actuator top block 144 is on the axis of the piezoelectric actuator 142, and the concave surface axis of the notch 1451 of the lower actuator top block 145 is intersected with and perpendicular to the axis of the piezoelectric actuator 142.

The upper jack guide shaft 1813 of the upper jack 181 is required to be installed into the adjusting hole 116 of the base 110 of the actuator system, the inner diameter of the actuator spring is installed on the small shaft 1811 of the upper jack of the actuator spring, the upper plane of the actuator spring is matched with the lower plane of the upper jack 181 of the actuator spring, the small shaft 1831 of the lower jack 183 of the actuator spring is installed into the inner diameter of the lower end of the actuator spring, and the plane of the lower jack 183 of the actuator spring is matched with the lower end surface of the actuator spring.

During assembly, the third protrusion 1414 at the right end of the lever 141 is assembled with the notch 1832 of the lower actuator jack 183, the left end of the lever 141 is pressed downwards by means of an assembly fixture, the actuator spring is compressed, the convex surface position of the right end of the lever 141 is lowered, and the piezoelectric actuator 142 with the upper actuator jack 144 and the lower actuator jack 145 bonded is conveniently assembled.

Before the piezoelectric actuator 142 is installed, the adjustment element 130 is installed into the adjustment groove of the base 110 of the actuator 100, the arcuate convex surface of the actuator upper top block 144 is installed into the arcuate concave surface of the adjustment element 130, and then the notch 1451 of the actuator lower top block 145 is assembled with the first protrusion 1412 of the lever 141.

The actuator adjusting hole 115 and the actuator spring adjusting hole 116 of the actuator system base 110 are provided with the actuator pre-tightening screw 148 and the actuator spring pre-tightening screw 182, so that the spherical surface is in plane contact with the upper plane of the actuator adjusting element 130 and the upper plane of the actuator spring upper top block 181, the pre-tightening force of the piezoelectric actuator 142 is adjusted by respectively adjusting the screwing amounts of the two pre-tightening screws, and when a reasonable pre-tightening force value is ensured, the lever 141 is ensured to reach a horizontal state at the moment.

The first elastic element 160 is sleeved into the convex cylinder 153 on the guide holder 150, the movable element 120 is installed into the guide hole 151 of the guide holder 150 from the middle of the first elastic element, then the guide holder 150 is screwed into the positioning hole 112 of the execution system base 110, the positioning boss 152 of the guide holder 150 is matched with and fastened with the positioning hole 112 of the execution system base 110, meanwhile, the upper plane of the movable element 120 is ensured to be completely attached to the convex surface at the left end of the lever 141, the displacement and acting force transmitted by the piezoelectric actuator 142 through the lever 141 are fully transmitted to the movable element 120, and the lifting height and the impact force of the movable element 120 are controllable.

The fluid micro-ejection device according to the embodiment of the present invention includes the execution system 100 of the fluid micro-ejection device according to the above embodiment, and since the execution system 100 according to the above embodiment of the present invention has the technical effects described above, the fluid micro-ejection device according to the embodiment of the present invention also has the corresponding technical effects, that is, the fluid ejection effects can be effectively adjusted.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An actuator system for a fluid microjet device, comprising:

A base body (110), wherein an execution mechanism installation cavity (111) is defined in the base body (110), and a positioning hole (112) communicated with the execution mechanism installation cavity (111) is formed in the base body (110);

A movable element (120), the movable element (120) being movably arranged in the positioning hole (112);

The lever (141) is arranged in the actuating mechanism mounting cavity (111), two ends of the lever (141) are movable, and a first end of the lever (141) is connected with the movable element (120) to control the movable element (120) to move;

The swinging pin shaft (146) is arranged in the actuating mechanism mounting cavity (111), and the second end of the lever (141) is connected with the swinging pin shaft (146) to pivot around the swinging pin shaft (146);

The actuator (142) is telescopically arranged in the actuating mechanism mounting cavity (111), and the actuator (142) is connected with the second end of the lever (141) to control the lever (141) to move;

The actuator (180) is telescopically arranged in the actuator mounting cavity (111), the axis of the actuator (180) is parallel to the axis of the actuator (142) and is connected with the second end of the lever (141) to adjust the pretightening force of the actuator (142), and the axis of the swing pin (146) is perpendicular to the axis of the actuator (142) and the axis of the actuator (180) and is positioned between the actuator (142) and the actuator (180) in the horizontal direction;

A controller (143), the controller (143) being connected to the actuator (142) to control the actuator (142) to extend and retract;

The adjusting element (130) is arranged in the actuating mechanism mounting cavity (111) and is connected with the actuator (142) to adjust the working position of the actuator (142);

the adjusting element (130) is arranged at the upper end of the actuator (142), an actuator upper jacking block (144) is arranged between the adjusting element (130) and the upper end of the actuator (142), an actuator lower jacking block (145) is arranged between the lower end of the actuator (142) and the second end of the lever (141), and the actuator lower jacking block (145) is abutted against the lower end of the actuator (142) and the second end of the lever (141);

the base body (110) is provided with an actuator adjustment hole (115), and the execution system (100) further comprises: an actuator pre-tightening screw (148), the actuator pre-tightening screw (148) being movably disposed within the actuator adjustment aperture (115), a lower end of the actuator pre-tightening screw (148) being spherical and cooperating with an upper plane of the adjustment element (130) to adjust the pre-tightening force of the actuator (142);

the actuator (180) is formed as an actuator spring, the base body (110) is provided with an actuator spring adjustment hole (116), and the actuator system further comprises:

an execution spring upper jacking block (181), wherein the execution spring upper jacking block (181) is movably arranged on the base body (110) and is connected with the upper end of the execution spring;

An execution spring pre-tightening screw (182), wherein the execution spring pre-tightening screw (182) is movably arranged in the execution spring adjusting hole (116) and is connected with the execution spring upper jacking block (181) to adjust the pre-tightening force of the execution spring;

an execution spring lower jack block (183), wherein the execution spring lower jack block (183) is arranged between the lower end of the execution spring and the lever (141) and is stopped against the second ends of the execution spring and the lever (141).

2. The actuating system of a fluid microjet device according to claim 1, wherein the swing pin (146) is formed in a column shape, a positioning groove (113) adapted to mount the swing pin (146) is provided on the base (110), a mating concave surface (1411) mated with the swing pin (146) is provided on a lower surface of the second end of the lever (141), and the swing pin (146) is provided between the positioning groove (113) and the mating concave surface (1411).

3. The actuator system of a fluid microjet device according to claim 2, wherein the cross section of the positioning groove (113) is formed in a circular arc shape and the radius of the positioning groove (113) is equal to the radius of the swing pin (146), and the cross section of the mating concave surface (1411) is formed in a circular arc shape and the radius of the mating concave surface (1411) is larger than the radius of the swing pin (146).

4. A fluid microjet device actuating system according to claim 3, wherein one end of the swing pin (146) is provided with an end boss (1461), the end boss (1461) abutting against a bottom surface of the second end of the lever (141) to limit the mounting height of the lever (141).

5. The actuating system of a fluid microjet device according to claim 3, wherein said lever (141) is provided with a sleeve (147) cooperating with said swing pin (146), said sleeve (147) being sleeved on said swing pin (146) and pivotable about said swing pin (146).

6. The system of claim 1, wherein the lower surface of the adjustment member (130) is formed as an upwardly concave arcuate surface, the upper surface of the actuator upper top block (144) is formed as an upwardly convex arcuate surface, and the radius of the upper surface of the actuator upper top block (144) is smaller than the radius of the lower surface of the adjustment member (130).

7. The actuator system of the fluid microjet device as in claim 1, wherein the upper surface of the second end of the lever (141) is provided with a first protrusion (1412), the first protrusion (1412) is formed in a circular arc shape in cross section, the lower surface of the actuator lower top block (145) is provided with a recess (1451), the recess (1451) is formed in a circular arc shape in cross section and the radius of the first protrusion (1412) is smaller than the radius of the recess (1451).

8. The actuator system of the fluid microjet device according to claim 1, wherein the lower surface of the first end of the lever (141) is provided with a second protrusion (1413), and the second protrusion (1413) is formed in a circular arc shape in cross section and abuts against the upper end surface of the movable member (120).

9. The actuation system of a fluid microjet device of claim 1, wherein the actuator pre-tension screw (148) is threadably coupled to the actuator adjustment aperture (115), the actuation system further comprising an actuator anti-loose screw (149), the actuator anti-loose screw (149) being threadably coupled to the actuator adjustment aperture (115) and abutting the actuator pre-tension screw (148).

10. The fluid microjet device actuation system of claim 1, wherein the actuator pre-tightening screw (148) is coupled to the base (110) by a lock nut (190).

11. The actuation system of a fluid microjet device according to claim 1, wherein the actuation sprung jack (181) comprises:

The upper jacking block small shaft (1811), and the upper jacking block small shaft (1811) is inserted into the upper end of the execution spring;

An upper top block stopper (1812), the radial dimension of the upper top block stopper (1812) being larger than the radial dimension of the upper top block small shaft (1811) and stopping against the upper end of the execution spring;

and the upper jacking block guide shaft (1813), and the upper jacking block guide shaft (1813) is movably inserted into the execution spring adjusting hole (116) along the axial direction of the execution spring adjusting hole (116).

12. The actuation system of a fluid microjet device of claim 1, wherein the actuation spring pre-tension screw (182) is threadably coupled to the actuation spring adjustment aperture (116), the actuation system further comprising an actuation spring anti-loose screw (184), the actuation spring anti-loose screw (184) being threadably coupled to the actuation spring adjustment aperture (116) and abutting the actuation spring pre-tension screw (182).

13. The actuation system of a fluid microjet device of claim 1, wherein the actuation spring pre-tension screw (182) is coupled to the actuation spring adjustment aperture (116) by a lock nut.

14. The actuating system of the fluid microjet device according to claim 1, wherein a lower top block small shaft (1831) is arranged at the upper end of the lower top block (183) of the actuating spring, the lower top block small shaft (1831) is inserted at the lower end of the actuating spring, a third protrusion (1414) is arranged on the upper surface of the second end of the lever (141), the cross section of the third protrusion (1414) is formed into a circular arc shape, a notch is arranged on the lower surface of the lower top block (183) of the actuating spring, the cross section of the notch is formed into a circular arc shape, and the radius of the third protrusion (1414) is smaller than the radius of the notch.

15. A fluid microjet device comprising the fluid microjet device actuation system of any of claims 1-14.