Piezoelectric injection valve system

Abstract

The utility model discloses a piezoelectric injection valve system which comprises a valve body provided with a containing space. The execution assembly is arranged in the accommodating space; one part of the adjusting seat penetrates through the valve body and extends into the accommodating space; the adjusting seat is positioned at one end of the executing component; the first elastic element is arranged in the containing space, and the first elastic element is located at the other end of the execution assembly. Through the structural improvement, the size of the adjusting seat can be reduced, so that the thickness of the valve body can be reduced. The improved piezoelectric injection valve system is suitable for being used in some scenes with small installation spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric injection valves, in particular to a piezoelectric injection valve system. Background Art

[0002] In glue dispensing equipment, piezoelectric injection valves are often used for glue dispensing operations. In existing piezoelectric injection valves (such as Chinese patent CN211838588U), a positioning seat is provided in the adjustment seat, the left end of the lever extends into the adjustment seat, and a spring is provided between the left end of the lever and the positioning seat, which is used to reset the lever. Since the spring has a large diameter and is located in the positioning seat, and the positioning seat is located in the adjustment seat, the diameter of the adjustment seat needs to be increased, which in turn causes the thickness of the entire piezoelectric injection valve to be thicker, and is not suitable for use scenarios with small installation space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the utility model provides a piezoelectric injection valve system, which can reduce the overall thickness of the piezoelectric injection valve system through structural improvement, and is suitable for use in scenarios with small installation spaces.

[0005] According to the piezoelectric injection valve system of the embodiment of the utility model, it includes: a valve body, which has a accommodating space; an actuator, which is arranged in the accommodating space; an adjustment seat, a part of which passes through the valve body and extends into the accommodating space; the adjustment seat is located at one end of the actuator; a first elastic element, which is arranged in the accommodating space and is located at the other end of the actuator.

[0006] The beneficial effect of the utility model is that by arranging the first elastic element and the adjustment seat on both sides of the actuator, the size of the adjustment seat can be reduced, thereby reducing the overall thickness of the piezoelectric injection valve; and the normal operation of the piezoelectric injection valve system can be ensured.

[0007] According to an embodiment of the utility model, the actuator assembly includes: an actuator, a lever and a rotating shaft, a portion of the rotating shaft is arranged on the valve body, the lower end surface of the lever abuts against the rotating shaft, and the upper end surface of the lever abuts against the actuator.

[0008] According to an embodiment of the utility model, one end of the lever extends into the adjustment seat, and the other end of the lever abuts against the first elastic element.

[0009] According to an embodiment of the utility model, a first mounting portion is provided in the valve body, one end of the first elastic element abuts against the first mounting portion, and the other end of the first elastic element abuts against the lever.

[0010] According to an embodiment of the present invention, the lever is located between the adjustment seat and the first elastic element.

[0011] According to an embodiment of the present invention, a positioning seat is provided between the first mounting portion and the first elastic element.

[0012] According to an embodiment of the utility model, a groove is provided on the lower surface of the lever, and a protrusion is provided on the upper end of the rotating shaft. The protrusion is located in the groove and abuts against the groove.

[0013] According to an embodiment of the utility model, the piezoelectric injection valve system further includes: an adjusting component, the adjusting component is at least partially located in the accommodating space, and the adjusting component is connected to the adjusting seat to adjust the position of the adjusting seat.

[0014] According to one embodiment of the utility model, the adjustment assembly includes: an adjustment element, a limit block and a second elastic element, one end of the adjustment element passes through the valve body and is connected to the adjustment seat, the second elastic element is sleeved on the adjustment element, and the limit block is used to axially limit the adjustment element.

[0015] According to an embodiment of the utility model, a second mounting portion and a third mounting portion are provided in the valve body, the second mounting portion is located directly above the third mounting portion, and the second elastic element is located between the second mounting portion and the third mounting portion.

[0016] According to an embodiment of the utility model, the adjustment seat includes: a seat body and a connecting body, the connecting body is fixedly connected to the seat body, at least a part of the seat body is located in the accommodating space, and the connecting body is located outside the accommodating space.

[0017] According to an embodiment of the utility model, a connecting portion for connecting with the adjusting assembly is provided on the seat body.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the piezoelectric injection valve system (hidden cover plate) of the utility model.

[0022] Figure 2 It is a cross-sectional view of the piezoelectric injection valve system of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the valve body of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the lever and the rotating shaft of the utility model.

[0025] Figure 5 It is a structural schematic diagram of the regulating element of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the limit block of the utility model.

[0027] Figure 7 It is a structural schematic diagram of the adjustment seat of the utility model.

[0028] Figure 8 It is a three-dimensional schematic diagram of the piezoelectric injection valve system of the utility model.

[0029] In the figure: 1, valve body; 2, actuator; 3, adjustment seat; 4, first elastic element; 5, positioning seat; 6, adjustment assembly; 9, cover plate; 101, accommodating space; 102, first mounting part; 103, second mounting part; 104, third mounting part; 105, mounting cavity; 1021, limiting edge; 21, actuator; 22, lever; 23, rotating shaft; 24, lower top block; 25, upper top block; 26, lower adjustment block; 27, upper adjustment block; 28, push rod; 221, groove; 231, protrusion; 31, seat body; 32, connecting body; 311, connecting part; 312, avoidance space; 61, adjustment element; 62, limiting block; 63, second elastic element; 611, first step surface; 612, second step surface; 621, U-shaped groove; 622, mounting hole. DETAILED DESCRIPTION

[0030] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0031] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 8 As shown, the piezoelectric injection valve system of the utility model includes: a valve body 1, an actuator 2, an adjustment seat 3 and a first elastic element 4, the valve body 1 has a accommodating space 101, the actuator 2 is arranged in the accommodating space 101, a part of the adjustment seat 3 passes through the valve body 1 and extends into the accommodating space 101, the adjustment seat 3 is located at one end of the actuator 2, the first elastic element 4 is arranged in the accommodating space 101, and the first elastic element 4 is located at the other end of the actuator 2.

[0034] That is to say, in the present embodiment, the first elastic element 4 is not arranged inside the adjustment seat 3, but is directly arranged inside the valve body 1, and the first elastic element 4 and the adjustment seat 3 are respectively located on both sides of the actuator 2. In this way, on the one hand, the size of the adjustment seat 3 can be reduced, thereby reducing the overall thickness of the piezoelectric injection valve; on the other hand, the first elastic element 4 can still play the role of resetting the actuator 2.

[0035] Specifically, the actuator 2 includes: an actuator 21, a lever 22 and a rotating shaft 23, a part of the rotating shaft 23 is arranged on the valve body 1, the lower end surface of the lever 22 abuts against the rotating shaft 23, and the upper end surface of the lever 22 abuts against the actuator 21. One end of the lever 22 extends into the adjustment seat 3, and the other end of the lever 22 abuts against the first elastic element 4. It should be noted that the rotating shaft 23 is located between the adjustment seat 3 and the first elastic element 4, and the contact point between the actuator 21 and the lever 22 is located on the left side of the rotating shaft 23. In this way, when the actuator 21 applies a force to the lever 22, the displacement of the left end of the lever 22 moving downward can be amplified, and at this time, the right end of the lever 22 moves upward (the first elastic element 4 is compressed). When the actuator 21 releases the force on the lever 22, the elastic force of the first elastic element 4 pushes the right end of the lever 22 downward, and the left end of the lever 22 returns to the initial position.

[0036] For example, the lower end of the actuator 21 is connected to the lower top block 24, the upper end of the actuator 21 is connected to the upper top block 25, and the lower adjustment block 26 and the upper adjustment block 27 are also provided between the upper top block 25 and the inner wall of the valve body 1, and the lower adjustment block 26 is located between the upper top block 25 and the upper adjustment block 27. Among them, the contact surface between the upper adjustment block 27 and the lower adjustment block 26 is an inclined surface, and a push rod 28 is provided on the right side of the upper adjustment block 27. When the actuator 2 is assembled with the valve body 1, the upper adjustment block 27 is first located at the upper right of the lower adjustment block 26. At this time, the push rod 28 can slowly push the upper adjustment block 27 to the left. When the upper adjustment block 27 moves to the left, the lower adjustment block 26 will move downward, so that the preload force of the actuator 21 on the lever 22 can be adjusted. After adjustment, the upper adjustment block 27 remains stationary.

[0037] For example, a groove 221 is provided on the lower surface of the lever 22, and a protrusion 231 is provided on the upper end of the rotating shaft 23. The protrusion 231 is located in the groove 221 and abuts against the groove 221. The groove 221 and the protrusion 231 are both V-shaped, for example, and the size of the groove 221 is larger than the size of the protrusion 231, so that the lever 22 can swing with the protrusion 231 as a fulcrum.

[0038] For example, a first mounting portion 102 is provided in the valve body 1, one end of the first elastic element 4 abuts against the first mounting portion 102, and the other end of the first elastic element 4 abuts against the lever 22. The lever 22 is located between the adjustment seat 3 and the first elastic element 4. A positioning seat 5 is provided between the first mounting portion 102 and the first elastic element 4. The positioning seat 5 is located at the lower end surface of the first mounting portion 102, the upper end of the first elastic element 4 abuts against the positioning seat 5, and the lower end of the second elastic element 4 abuts against the upper surface of the right end of the lever 22. The positioning seat 5 can position the first elastic element 4 to prevent the first elastic element 4 from being displaced during use. For example, a limiting edge 1021 is provided on the left side of the first mounting portion 102, which can limit the positioning seat 5.

[0039] The piezoelectric injection valve system also includes: an adjustment component 6, the adjustment component 6 is at least partially located in the accommodating space 101, and the adjustment component 6 is connected to the adjustment seat 3 to adjust the position of the adjustment seat 3. The adjustment component 6 includes: an adjustment element 61, a limit block 62 and a second elastic element 63. One end of the adjustment element 61 passes through the valve body 1 and is connected to the adjustment seat 3. The second elastic element 63 is sleeved on the adjustment element 61, and the limit block 62 is used to axially limit the adjustment element 61. For example, the lower end of the adjustment element 61 is threadedly connected to the upper end of the adjustment seat 3, that is, the adjustment seat 3 can be moved up and down by rotating the adjustment element 61, thereby adjusting the position of the adjustment seat 3. When the adjustment seat 3 moves, the upper end of the adjustment seat 3 is always subjected to the downward force applied by the second elastic element 63 to the adjustment seat 3, so as to improve the stability of the downward movement of the adjustment seat 3.

[0040] For example, the valve body 1 is further provided with an installation cavity 105, and the limit block 62 is located in the installation cavity 105. A U-shaped groove 621 is provided on one side of the limit block 62, and a mounting hole 622 is provided on the other side of the limit block 62. A first step surface 611 and a second step surface 612 are provided on the adjustment element 61. When the limit block 62 is inserted into the installation cavity 105, the limit block 62 is located between the first step surface 611 and the second step surface 612, thereby realizing the axial limitation of the adjustment element 61. When the limit block 62 needs to be taken out from the installation cavity 105, the limit block 62 can be taken out after being connected with the mounting hole 622 by a screw.

[0041] For example, the valve body 1 is provided with a second mounting portion 103 and a third mounting portion 104, the second mounting portion 103 is located directly above the third mounting portion 103, and the second elastic element 63 is located between the second mounting portion 103 and the third mounting portion 104. The adjustment seat 3 includes: a seat body 31 and a connecting body 32, the connecting body 32 is fixedly connected to the seat body 31, at least part of the seat body 31 is located in the accommodating space 101, and the connecting body 32 is located outside the accommodating space 101. The seat body 31 is provided with a connecting portion 311 for connecting with the adjustment assembly 6.

[0042] It should be noted that the lower end of the adjusting element 61 passes through the second mounting portion 103, the connecting portion 311 of the seat body 31 is located at the upper end of the seat body 31, the connecting portion 311 passes through the third mounting portion 104, the lower end of the adjusting element 61 is threadedly connected to the connecting portion 311, and the lower end of the second elastic element 63 abuts against the connecting portion 311. The second mounting portion 103 and the third mounting portion 104 are hollowed out, so that when the connecting portion 311 passes through the third mounting portion 104 and the adjusting element 61 is connected to the connecting portion 311, the workers can see it intuitively, which is convenient for aligning the adjusting element 61 with the connecting portion 311 and facilitating operation. In addition, the third mounting portion 104 can also play a role in positioning the adjustment seat 3 in the horizontal direction.

[0043] For example, an escape space 312 is provided on the seat body 31. The left end of the lever 22 extends into the escape space 312. The piezoelectric injection valve system also includes: a movable element and a fluid seat (not shown in the figure), at least part of the movable element is located in the escape space 312, and the movable element passes through the connecting body 32, and the fluid seat is connected to the connecting body 32. In other words, the upper end of the movable element is located in the escape space 312, and the lower end of the movable element passes through the connecting body 32 and extends into the fluid seat. The upper end of the movable element abuts against the left end of the lever 22. When the actuator 21 applies a force to the lever 22, the movable element moves downward, and at this time, the colloid in the fluid seat is ejected under the action of the movable element. For example, the piezoelectric injection valve system also includes: a cover plate 9, and the cover plate 9 is connected to the valve body 1 by screws to seal the accommodating space 101.

[0044] In summary, the piezoelectric injection valve system of the utility model can reduce the size of the adjustment seat 3 through structural improvement, thereby reducing the thickness of the valve body 1. The improved piezoelectric injection valve system is suitable for use in some scenes with small installation space, and is also suitable for the arrangement and use of multiple piezoelectric injection valve systems. In some processes that require multiple piezoelectric injection valve systems to dispense glue at the same time, a piezoelectric injection valve system with a thinner thickness has more advantages.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A piezoelectric injection valve system, characterized in that: include: A valve body (1), wherein the valve body (1) has a receiving space (101); an execution component (2), the execution component (2) being arranged in the accommodation space (101); an adjustment seat (3), a portion of which passes through the valve body (1) and extends into the accommodating space (101); the adjustment seat (3) is located at one end of the actuator (2); A first elastic element (4), wherein the first elastic element (4) is arranged in the accommodating space (101), and the first elastic element (4) is located at the other end of the actuator (2).

2. The piezoelectric injection valve system according to claim 1, characterized in that: The actuator assembly (2) comprises: an actuator (21), a lever (22) and a rotating shaft (23); a portion of the rotating shaft (23) is arranged on the valve body (1); the lower end surface of the lever (22) abuts against the rotating shaft (23); and the upper end surface of the lever (22) abuts against the actuator (21).

3. The piezoelectric injection valve system according to claim 2, characterized in that: One end of the lever (22) extends into the adjustment seat (3), and the other end of the lever (22) abuts against the first elastic element (4).

4. The piezoelectric injection valve system according to claim 3, characterized in that: A first mounting portion (102) is provided in the valve body (1), one end of the first elastic element (4) abuts against the first mounting portion (102), and the other end of the first elastic element (4) abuts against the lever (22).

5. The piezoelectric injection valve system according to claim 2, characterized in that: The lever (22) is located between the adjustment seat (3) and the first elastic element (4).

6. The piezoelectric injection valve system according to claim 4, characterized in that: A positioning seat (5) is provided between the first mounting portion (102) and the first elastic element (4).

7. The piezoelectric injection valve system according to claim 2, characterized in that: The lower surface of the lever (22) is provided with a groove (221), and the upper end of the rotating shaft (23) is provided with a protrusion (231), and the protrusion (231) is located in the groove (221) and abuts against the groove (221).

8. The piezoelectric injection valve system according to claim 1, characterized in that: The piezoelectric injection valve system further comprises: an adjusting component (6), wherein the adjusting component (6) is at least partially located in the accommodating space (101), and the adjusting component (6) is connected to the adjusting seat (3) to adjust the position of the adjusting seat (3).

9. The piezoelectric injection valve system according to claim 8, characterized in that: The adjusting assembly (6) comprises: an adjusting element (61), a limiting block (62) and a second elastic element (63); one end of the adjusting element (61) passes through the valve body (1) and is connected to the adjusting seat (3); the second elastic element (63) is sleeved on the adjusting element (61); and the limiting block (62) is used for axially limiting the adjusting element (61).

10. The piezoelectric injection valve system according to claim 9, characterized in that: A second mounting portion and a third mounting portion (104) are provided in the valve body (1); the second mounting portion is located directly above the third mounting portion; and the second elastic element (63) is located between the second mounting portion and the third mounting portion (104).

11. The piezoelectric injection valve system according to claim 8, characterized in that: The adjustment seat (3) comprises: a seat body (31) and a connecting body (32); the connecting body (32) is fixedly connected to the seat body (31); at least a portion of the seat body (31) is located in the accommodating space (101); and the connecting body (32) is located outside the accommodating space (101).

12. The piezoelectric injection valve system according to claim 11, characterized in that: The seat body (31) is provided with a connecting portion (311) for connecting with the adjustment assembly (6).

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