Piezoelectric spray valve with small glue width

Abstract

The invention discloses a small-glue-width piezoelectric type spray valve which comprises a connecting base, a nozzle assembly, a glue inlet assembly, a valve body assembly and an atomization assembly. A mounting hole is formed in the connecting seat; the nozzle assembly is arranged in the mounting hole, a glue outlet hole is formed in the nozzle assembly, and the hole diameter of the glue outlet hole is gradually reduced from top to bottom; the glue inlet assembly is communicated with the glue outlet hole and is used for conveying glue into the glue outlet hole; the valve body assembly comprises a valve seat, a valve element, a piezoelectric valve and a reset seat, the valve seat is arranged on the connecting seat, the valve element, the piezoelectric valve and the reset seat are all arranged in the valve seat, the upper end of the valve element is connected with the reset seat, the lower end of the valve element penetrates into the nozzle assembly, and the piezoelectric valve is connected with the reset seat. The valve core is configured to close the glue outlet hole when the piezoelectric valve is powered on and opened and open the glue outlet hole when the piezoelectric valve is powered off and closed; the atomizing assembly is connected with the connecting base and used for introducing air into the nozzle assembly so as to atomize glue sprayed out of the glue outlet hole. According to the small-glue wide piezoelectric type spray valve provided by the invention, the mechanism is simple and compact, a glue path with smaller width can be sprayed on a tiny product, and meanwhile, the glue can be atomized and prevented from sputtering, so that the dispensing effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing, and in particular to a small glue width piezoelectric spray valve. Background Art

[0002] Glue dispensing is a process, also known as gluing, coating, pouring, dripping, etc. It is to apply, pour, and drip electronic glue, oil or other liquids onto the product to make the product stick, pour, insulate, fix, and have a smooth surface.

[0003] The dispensing valve is the core component of the dispensing equipment, which can apply the colloid to the surface of the workpiece according to the predetermined amount. When the glue is sprayed from the dispensing valve to the product, the glue is generally in a liquid state. This state may cause the glue to splash around when it contacts the product, thus affecting the glue path and having an adverse effect on the subsequent bonding of related parts. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the present invention is to provide a small glue width piezoelectric spray valve.

[0005] To achieve the above object, a small glue width piezoelectric spray valve according to an embodiment of the present invention includes:

[0006] A connecting seat, wherein a mounting hole is provided on the connecting seat;

[0007] A nozzle assembly, wherein the nozzle assembly is arranged in the mounting hole, and a glue outlet hole is arranged in the nozzle assembly, and the aperture of the glue outlet hole gradually decreases from top to bottom;

[0008] A glue feeding component, the glue feeding component is connected to the glue outlet hole and is used to transport glue into the glue outlet hole;

[0009] A valve body assembly, the valve body assembly comprising a valve seat, a valve core, a piezoelectric valve and a reset seat, the valve seat being arranged on the connecting seat, the valve core, the piezoelectric valve and the reset seat being arranged in the valve seat, wherein the upper end of the valve core is connected to the reset seat, and the lower end is penetrated into the nozzle assembly, the valve core being configured to close the glue outlet hole when the piezoelectric valve is powered on and opened, and to open the glue outlet hole when the piezoelectric valve is powered off and closed;

[0010] An atomizing assembly is connected to the connecting seat and is used for ventilating the nozzle assembly so as to atomize the glue sprayed from the glue outlet hole.

[0011] The small glue width piezoelectric spray valve provided by the invention has a simple and compact structure and can spray a small glue path on tiny products. At the same time, it can atomize the glue to prevent glue splashing, thereby ensuring the glue dispensing effect.

[0012] In addition, the small glue width piezoelectric spray valve according to the above embodiment of the present invention may also have the following additional technical features:

[0013] According to one embodiment of the present invention, the nozzle assembly includes a housing, a closing seat and a rubber outlet pipe;

[0014] The housing is arranged in the mounting hole, and comprises an outer shell and a connector. The connector is arranged at the bottom of the outer shell, and the lower end thereof passes through the mounting hole. A through hole is arranged on the connector.

[0015] The closing seat is arranged in the shell and is communicated with the glue outlet hole in the glue outlet pipe, and is used for installing the glue outlet pipe in the through hole.

[0016] According to an embodiment of the present invention, the closing seat is a T-shaped structure and is inserted into the through hole. A liquid hole is provided on the upper surface and penetrates to the lower surface. The liquid hole is a funnel-shaped structure and is connected to the glue inlet assembly. The upper end of the glue outlet pipe is arranged in the liquid hole.

[0017] The lower end of the valve core is configured as a curved surface structure adapted to the inner wall of the liquid passage hole;

[0018] When the piezoelectric valve is powered on and opened, the piezoelectric valve drives the lower end of the valve core to abut against the inner wall of the liquid hole to close the liquid hole; when the piezoelectric valve is powered off and closed, the reset seat drives the lower end of the valve core to separate from the inner wall of the liquid hole to open the liquid hole.

[0019] According to one embodiment of the present invention, the connecting seat includes a lower seat body and an upper seat body;

[0020] The lower seat body is an L-shaped structure, including an upper connecting end and a lower connecting end, the mounting hole is arranged on the lower connecting end, the upper connecting end is provided with an air passage penetrating to the lower connecting end, one end of the air passage is connected to the atomizing assembly, and the other end is connected to the through hole, and is used to transport the gas provided by the atomizing assembly into the through hole;

[0021] The upper seat body is arranged on the lower connecting end and is used for installing the glue inlet assembly and the valve seat.

[0022] According to an embodiment of the present invention, a closed air cavity is formed between the upper end of the housing and the connector and the mounting hole, and the other end of the air passage is connected to the air cavity;

[0023] A plurality of air inlet holes are arranged around the outer wall of the upper end of the connector, and the plurality of air inlet holes are connected with the air cavity and are used to transmit the gas in the air cavity to the through hole.

[0024] According to one embodiment of the present invention, an outer sleeve is provided on the outer wall of the lower end of the glue outlet pipe, the outer sleeve is tightly connected to the inner wall of the through hole, and a plurality of spiral air outlet holes penetrating to the lower surface are evenly spaced on the upper surface of the outer sleeve, and the plurality of air outlet holes are arranged around the glue outlet pipe for outputting the gas in the through hole so as to atomize the glue sprayed from the glue outlet pipe.

[0025] According to one embodiment of the present invention, the glue feeding assembly includes a glue barrel and a glue feeding seat, the glue feeding seat is arranged on the upper seat body, the upper end is connected to the glue barrel, the lower end is passed through the outer shell and is connected to the glue outlet hole, and is used to transport the glue in the glue barrel to the glue outlet hole.

[0026] According to one embodiment of the present invention, the glue feeding seat includes a glue feeding head, a glue delivery pipe and a glue outlet head;

[0027] The glue feeding head is vertically arranged, and the lower end is connected with the left end of the glue delivery pipe, and the glue barrel is connected with the upper end of the glue feeding head;

[0028] The glue outlet head is vertically arranged, and the upper end is communicated with the right end of the glue delivery pipe. The lower end of the glue outlet head is passed through the shell and communicated with the glue outlet pipe.

[0029] According to an embodiment of the present invention, an annular positioning member is provided on the closing seat at the periphery of the liquid passage hole, an annular positioning groove is provided at the lower end of the glue discharge head, and the annular positioning member is clamped in the annular positioning groove.

[0030] According to one embodiment of the present invention, a through hole is provided at the right end of the rubber delivery pipe, the through hole is opposite to the rubber outlet head in upper and lower directions, the reset seat is provided in the through hole, and the valve core passes through the reset seat and the rubber outlet head in sequence and is provided in the liquid passage hole.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0034] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of the decomposed structure of an embodiment of the present invention;

[0036] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0037] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0038] Figure 6 is a schematic structural diagram of a connecting socket in an embodiment of the present invention;

[0039] Figure 7 is a schematic structural diagram of a nozzle assembly in an embodiment of the present invention;

[0040] Figure 8 is a schematic cross-sectional structure diagram of a nozzle assembly in an embodiment of the present invention;

[0041] Fig. 9 Schematic diagram of the structure of the glue feeding component in the embodiment of the present invention.

[0042] Reference numerals:

[0043] Connecting seat 10;

[0044] Lower seat body 11;

[0045] Mounting hole 111;

[0046] Airway 112;

[0047] Air cavity 1111;

[0048] Upper seat body 12;

[0049] Nozzle assembly 20;

[0050] Housing 21;

[0051] Housing 211;

[0052] Connector 212;

[0053] Through hole 2121;

[0054] Outer jacket 2122;

[0055] Vent 21221;

[0056] Air inlet 2123;

[0057] Glue outlet pipe 22;

[0058] Glue outlet hole 221;

[0059] Closed seat 23;

[0060] Liquid hole 231;

[0061] annular positioning member 232;

[0062] Glue feeding assembly 30;

[0063] Glue barrel 31;

[0064] Glue feeding seat 32;

[0065] Rubber hose 321;

[0066] Glue feeding head 322;

[0067] Glue outlet 33;

[0068] Valve body assembly 40;

[0069] Valve seat 41;

[0070] Valve core 42;

[0071] Piezoelectric valve 43;

[0072] Reset seat 44.

[0073] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0074] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0075] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection 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.

[0078] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0079] The small glue width piezoelectric spray valve according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0080] Reference Figures 1 to 9 As shown, the small glue width piezoelectric spray valve provided according to an embodiment of the present invention includes a connecting seat 10, a nozzle assembly 20, a glue inlet assembly 30, a valve body assembly 40 and an atomizing assembly;

[0081] The connection seat 10 is provided with a mounting hole 111, the nozzle assembly 20 is provided in the mounting hole 111, and the nozzle assembly 20 is provided with a glue outlet hole 221, and the aperture of the glue outlet hole 221 gradually decreases from top to bottom. That is, the aperture of the upper end of the glue outlet hole 221 is larger than the aperture of the lower end, so that the glue can flow from the upper end with a larger aperture to the lower end with a smaller aperture. Therefore, when the glue flows out from the lower end of the glue outlet hole 221, the speed of the glue flow will be relatively fast and the size will be relatively small. In this way, when the glue is sprayed on the product, the glue path formed is relatively narrow.

[0082] The glue inlet assembly 30 is used to store glue, and is connected to the glue outlet hole 221 , so that the glue can be transported into the glue outlet hole 221 , so that the glue can be sprayed onto the product through the glue outlet hole 221 to form a glue path.

[0083] The valve body assembly 40 includes a valve seat 41, a valve core 42, a piezoelectric valve 43 and a reset seat 44, wherein the valve seat 41 is arranged on the connecting seat 10, and the valve core 42, the piezoelectric valve 43 and the reset seat 44 are all arranged in the valve seat 41, wherein the upper end of the valve core 42 is connected to the reset seat 44, and the lower end is passed through the nozzle assembly 20, and the valve core 42 is constructed to close the glue outlet hole 221 when the piezoelectric valve 43 is powered on and opened, and to open the glue outlet hole 221 when the piezoelectric valve 43 is powered off and closed.

[0084] The valve body assembly 40 is used to open or close the nozzle assembly 20, and specifically includes a valve seat 41, a valve core 42, a piezoelectric valve 43 and a reset seat 44, wherein the valve seat 41 is used to fix the valve core 42, the piezoelectric valve 43 and the reset seat 44, the reset seat 44 is elastic and can generate elastic force, the valve core 42 is the main component for closing or opening the glue outlet hole 221, and its upper end is connected to the reset part and offset with the output structure in the piezoelectric valve 43. It should be noted here that the piezoelectric valve 43 is a very common component and is not further limited in this embodiment. When the piezoelectric valve 43 is powered on, the piezoelectric valve 43 can press the valve core 42 downward, so that the valve core 42 can move downward to compress the reset seat 44 and close the glue outlet hole 221. At this time, the glue outlet hole 221 cannot discharge glue. When the piezoelectric valve 43 is powered off and stops working, the valve core 42 can be reset under the elastic force of the reset seat 44 and then open the glue outlet hole 221. The glue inlet component 30 can transport the glue to the glue outlet pipe 22, and then use the glue outlet pipe 22 to spray the glue onto the product.

[0085] The atomizing assembly is connected to the connecting seat 10 and is used for ventilating the nozzle assembly 20 to atomize the glue sprayed from the glue outlet hole 221 .

[0086] The atomizing assembly can deliver gas into the nozzle and blow it out from around the lower end of the glue outlet pipe 22 when the glue is sprayed out, so that the glue can be atomized to make the glue into particles and sprayed onto the product, thus avoiding the problem of glue rebounding or splashing around.

[0087] More specifically, when in use, the connection seat 10 can be installed on a driving structure on the glue dispensing equipment, such as a manipulator, and then the manipulator drives the application to move to the top of the product to be glued, and then glue dispensing can be performed. During the glue dispensing process, the piezoelectric valve 43, the glue feeding component 30 and the atomizing component are periodically opened or closed according to the pre-set program instructions. When the piezoelectric valve 43 is opened, the piezoelectric valve 43 forces the valve core 42 to compress the reset seat 44 and close the glue outlet pipe 22. At this time, the glue feeding component 30 does not transport the colloid, and the atomizing component does not supply air. When the piezoelectric valve 43 is closed, the reset seat 44 needs to be reset and then drive the valve core 42 component to reset to open the glue outlet pipe 22. At this time, the glue feeding component 30 can transport the colloid into the glue outlet hole 221 of the nozzle component 20, and the atomizing component supplies air into the nozzle component 20, so that the glue is sprayed out from the glue outlet pipe 22, and the gas is blown out from around the glue outlet hole 221, thereby atomizing the glue. Since the inner diameter of the glue outlet pipe 22 is smaller at the lower end, the glue flowing out of the glue outlet pipe 22 has a smaller flow rate and a narrower width, which is very suitable for dispensing small and micro products. In addition, the glue can be atomized, so that the glue can be prevented from rebounding or splashing around when sprayed onto the product and affecting the glue path.

[0088] The small glue width piezoelectric spray valve provided by the invention has a simple and compact structure and can spray a small glue path on tiny products. At the same time, it can atomize the glue to prevent glue splashing, thereby ensuring the glue dispensing effect.

[0089] Advantageously, in one embodiment of the present invention, the nozzle assembly 20 comprises a housing 21, a sealing seat 23 and a glue outlet hose 22;

[0090] The housing 21 is disposed in the mounting hole 111, and includes a shell 211 and a connector 212. The connector 212 is disposed at the bottom of the shell 211, and the lower end thereof passes through the mounting hole 111. A through hole 2121 is disposed on the connector 212.

[0091] The closing seat 23 is disposed in the housing 21 and communicated with the glue outlet hole 221 in the glue outlet pipe 22 , and is used to install the glue outlet pipe 22 in the through hole 2121 .

[0092] The housing 211 is a structure adapted to the mounting hole 111, and can be inserted into the mounting hole 111 to mount the connector 212 on the connector seat 10. The closing seat 23 is a transition structure. On the one hand, the glue outlet pipe 22 can be mounted in the connector 212, and on the other hand, it can be connected with the glue inlet assembly 30 and the glue outlet hole 221, so that the glue outlet hole 221 and the glue inlet assembly 30 form a passage, so that the glue transmitted by the glue inlet assembly 30 flows into the glue outlet hole 221 through the closing seat 23, and finally sprayed on the product from the glue outlet hole 221 to complete the glue dispensing process of the product.

[0093] Advantageously, in one embodiment of the present invention, the closure seat 23 is a T-shaped structure and is inserted into the through hole 2121. A liquid-passing hole 231 is provided on the upper surface and penetrates to the lower surface. The liquid-passing hole 231 is a funnel-shaped structure and is connected to the glue inlet assembly 30. The upper end of the glue outlet pipe 22 is disposed in the liquid-passing hole 231.

[0094] The lower end of the valve core 42 is configured as a curved surface structure adapted to the inner wall of the liquid passage hole 231;

[0095] When the piezoelectric valve 43 is powered on and opened, the piezoelectric valve 43 drives the lower end of the valve core 42 to abut against the inner wall of the liquid hole 231 to close the liquid hole 231; when the piezoelectric valve 43 is powered off and closed, the reset seat 44 drives the lower end of the valve core 42 to separate from the inner wall of the liquid hole 231 to open the liquid hole 231.

[0096] That is to say, the aperture of the upper end of the liquid hole 231 on the closing seat 23 is much larger than the aperture of the lower end, and in this way, the large-aperture end of the liquid hole 231 can better receive glue, so as to facilitate the glue to flow into the liquid outlet pipe. In addition, since the funnel-shaped liquid hole 231 is connected to the glue outlet hole 221, closing it can also close the glue outlet hole 221, thereby setting the lower end of the valve core 42 into an arc structure that matches the inner wall of the liquid hole 231, and under the drive of the piezoelectric valve 43, the lower end of the valve core 42 can be tightly pressed against the inner wall of the upper end of the liquid hole 231, thereby blocking the liquid hole 231, thereby closing the liquid hole 231 and further closing the liquid outlet hole. On the contrary, when the piezoelectric valve 43 is powered off, the valve core 42 can be separated from the inner wall of the liquid hole 231 under the drive of the reset seat 44, so that the liquid hole 231 can be opened, and then the liquid outlet hole can be opened to facilitate the circulation of glue.

[0097] Advantageously, in one embodiment of the present invention, the connecting seat 10 comprises a lower seat body 11 and an upper seat body 12;

[0098] The lower seat body 11 is an L-shaped structure, including an upper connecting end and a lower connecting end. The mounting hole 111 is arranged on the lower connecting end. The upper connecting end is provided with an air passage 112 which passes through the lower connecting end. One end of the air passage 112 is connected to the atomization component, and the other end is connected to the through hole 2121, so as to transport the gas provided by the atomization component to the through hole 2121.

[0099] The upper seat body 12 is disposed on the lower connecting end and is used for mounting the glue inlet assembly 30 and the valve seat 41 .

[0100] On the one hand, the lower seat body 11 can be used to install the nozzle assembly, and on the other hand, it can also be connected to the atomizing assembly, and then the gas provided by the atomizing assembly is transported from the air passage 112 to the nozzle assembly to facilitate atomizing the glue. The lower seat body 11 is arranged on the upper seat body 12, and the glue feeding assembly 30 and the valve seat 41 can be installed as a whole, so that the entire device structure is more compact, smaller in size, and convenient to use.

[0101] Advantageously, in another embodiment of the present invention, a closed air cavity 1111 is formed between the housing 211 and the upper end of the connector 212 and the mounting hole 111, and the other end of the air passage 112 is in communication with the air cavity 1111;

[0102] A plurality of air inlet holes 2123 are disposed around the outer wall of the upper end of the connector 212 . The plurality of air inlet holes 2123 are connected to the air cavity 1111 and are used to transfer the gas in the air cavity 1111 to the through hole 2121 .

[0103] That is to say, the shell 211 is tightly connected to the inner wall of the mounting hole 111, and the upper end of the connecting head 212 is also tightly connected to the inner wall of the mounting hole 111, so that a closed air cavity 1111 can be formed between the shell 211, the connecting head 212 and the interior of the mounting hole 111, and the air cavity 1111 is connected to the air passage 112 on the lower seat body 11, and is connected to the multiple air inlet holes 2123 on the connecting head 212. In this way, the gas provided by the atomization component is transmitted to the air cavity 1111 through the air passage 112, and then enters the through hole 2121 through the multiple air inlet holes 2123. The multiple air inlet holes 2123 are arranged in a surrounding manner, so the gas can enter the through hole 2121 relatively evenly from all directions, avoiding uneven distribution of the gas in the through hole 2121 and affecting the subsequent atomization effect.

[0104] Advantageously, in another embodiment of the present invention, an outer sleeve 2122 is provided on the outer wall of the lower end of the glue outlet pipe 22, and the outer sleeve 2122 is tightly connected to the inner wall of the through hole 2121, and the upper surface of the outer sleeve 2122 is evenly spaced with a plurality of spiral air outlet holes 21221 penetrating to the lower surface, and the plurality of air outlet holes 21221 are arranged around the glue outlet pipe 22 for outputting the gas in the through hole 2121 so as to atomize the glue sprayed from the glue outlet pipe 22.

[0105] The outer shell 2122 is tightly connected to the inner wall of the through hole 2121, so there is no gap between the outer shell 2122 and the inner wall of the through hole 2121. In this way, the gas entering the through hole 2121 from the air inlet 2123 will flow downward along the multiple air outlet holes 21221 on the outer shell 2122. The multiple air outlet holes 21221 are spiral and evenly arranged around the glue outlet pipe 22. Then, the gas blown out from the multiple air outlet holes 21221 is also more evenly distributed, so that the glue is atomized more evenly, avoiding affecting the subsequent glue path distribution.

[0106] Advantageously, in some embodiments of the present invention, the glue feed assembly 30 includes a glue barrel 31 and a glue feed seat 32. The glue feed seat 32 is arranged on the upper seat body 12, with the upper end connected to the glue barrel 31, and the lower end is passed through the outer shell 211 and connected to the glue outlet hole 221, so as to transport the glue in the glue barrel 31 to the glue outlet hole 221.

[0107] Preferably, the glue feeding seat 32 includes a glue feeding head 322, a glue delivery pipe 321 and a glue outlet head 33;

[0108] The glue feeding head 322 is vertically arranged, and the lower end is connected to the left end of the glue delivery pipe 321, and the glue barrel 31 is connected to the upper end of the glue feeding head 322;

[0109] The glue outlet head 33 is vertically arranged, and the upper end thereof is communicated with the right end of the glue delivery pipe 321 . The lower end of the glue outlet head 33 is passed through the housing 211 and communicated with the glue outlet pipe 22 .

[0110] A glue delivery hole is set in the glue delivery pipe 321, and the glue delivery hole is gradually inclined downward from left to right. The left end is connected to the glue inlet head 322, and the right end is connected to the glue outlet head 33. In this way, the glue in the glue barrel 31 can enter the glue delivery hole along the glue inlet head 322, and enter the liquid passage hole 231 from the glue outlet head 33.

[0111] Advantageously, in some other embodiments of the present invention, an annular positioning member 232 is provided on the closure seat 23 at the periphery of the liquid passage hole 231, and an annular positioning groove is provided at the lower end of the glue discharge head 33, and the annular positioning member 232 is clamped in the annular positioning groove.

[0112] Thus, by the cooperation of the annular positioning member 232 and the annular positioning groove, the glue head 33 can be conveniently installed in the housing 211 , and the liquid hole 231 can also be aligned with the glue head 33 to ensure the communication between the liquid hole 231 and the glue delivery pipe 321 .

[0113] Advantageously, in some other embodiments of the present invention, a through hole is provided at the right end of the glue delivery pipe 321, and the through hole is opposite to the glue outlet head 33 in upper and lower directions. The reset seat 44 is provided in the through hole, and the valve core 42 passes through the reset seat 44 and the glue outlet head 33 in sequence and is penetrated into the liquid hole 231.

[0114] The perforation is coaxially arranged with the hole on the glue discharge head 33 and the liquid hole 231 on the closing seat 23 , so that it is convenient for the valve core 42 to be sequentially penetrated and then penetrated into the liquid hole 231 to facilitate closing or opening the liquid hole 231 .

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0116] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A small glue width piezoelectric spray valve, characterized in that: include: A connecting seat, wherein a mounting hole is provided on the connecting seat; A nozzle assembly, wherein the nozzle assembly is arranged in the mounting hole, and a glue outlet hole is arranged in the nozzle assembly, and the aperture of the glue outlet hole gradually decreases from top to bottom; A glue feeding component, the glue feeding component is connected to the glue outlet hole and is used to transport glue into the glue outlet hole; A valve body assembly, the valve body assembly comprising a valve seat, a valve core, a piezoelectric valve and a reset seat, the valve seat being arranged on the connecting seat, the valve core, the piezoelectric valve and the reset seat being arranged in the valve seat, wherein the upper end of the valve core is connected to the reset seat, and the lower end is penetrated into the nozzle assembly, the valve core being configured to close the glue outlet hole when the piezoelectric valve is powered on and opened, and to open the glue outlet hole when the piezoelectric valve is powered off and closed; An atomizing assembly is connected to the connecting seat and is used for ventilating the nozzle assembly so as to atomize the glue sprayed from the glue outlet hole.

2. The small glue width piezoelectric spray valve according to claim 1, characterized in that: The nozzle assembly comprises a shell, a closing seat and a rubber outlet pipe; The housing is arranged in the mounting hole, and comprises an outer shell and a connector. The connector is arranged at the bottom of the outer shell, and the lower end thereof passes through the mounting hole. A through hole is arranged on the connector. The closing seat is arranged in the shell and is communicated with the glue outlet hole in the glue outlet pipe, and is used for installing the glue outlet pipe in the through hole.

3. The small glue width piezoelectric spray valve according to claim 2, characterized in that: The closing seat is a T-shaped structure and is inserted into the through hole. A liquid-passing hole is provided on the upper surface and penetrates to the lower surface. The liquid-passing hole is a funnel-shaped structure and is connected to the glue inlet assembly. The upper end of the glue outlet pipe is arranged in the liquid-passing hole. The lower end of the valve core is configured as a curved surface structure adapted to the inner wall of the liquid passage hole; When the piezoelectric valve is powered on and opened, the piezoelectric valve drives the lower end of the valve core to abut against the inner wall of the liquid hole to close the liquid hole; when the piezoelectric valve is powered off and closed, the reset seat drives the lower end of the valve core to separate from the inner wall of the liquid hole to open the liquid hole.

4. The small glue width piezoelectric spray valve according to claim 2, characterized in that: The connecting seat comprises a lower seat body and an upper seat body; The lower seat body is an L-shaped structure, including an upper connecting end and a lower connecting end, the mounting hole is arranged on the lower connecting end, the upper connecting end is provided with an air passage penetrating to the lower connecting end, one end of the air passage is connected to the atomizing assembly, and the other end is connected to the through hole, and is used to transport the gas provided by the atomizing assembly into the through hole; The upper seat body is arranged on the lower connecting end and is used for installing the glue inlet assembly and the valve seat.

5. The small glue width piezoelectric spray valve according to claim 4, characterized in that: A closed air cavity is formed between the upper end of the housing and the connector and the mounting hole, and the other end of the air passage is connected to the air cavity; A plurality of air inlet holes are arranged around the outer wall of the upper end of the connector, and the plurality of air inlet holes are connected with the air cavity and are used to transmit the gas in the air cavity to the through hole.

6. The small glue width piezoelectric spray valve according to claim 5, characterized in that: An outer sleeve is provided on the outer wall of the lower end of the glue outlet pipe, and the outer sleeve is tightly connected to the inner wall of the through hole. A plurality of spiral air outlet holes penetrating to the lower surface are evenly spaced on the upper surface of the outer sleeve. The plurality of air outlet holes are arranged around the glue outlet pipe for outputting the gas in the through hole so as to atomize the glue sprayed from the glue outlet pipe.

7. The small glue width piezoelectric spray valve according to claim 4, characterized in that: The glue feeding assembly includes a glue barrel and a glue feeding seat. The glue feeding seat is arranged on the upper seat body, the upper end of which is connected to the glue barrel, and the lower end is passed through the shell and connected to the glue outlet hole, so as to transport the glue in the glue barrel to the glue outlet hole.

8. The small glue width piezoelectric spray valve according to claim 7, characterized in that: The glue feeding seat comprises a glue feeding head, a glue delivery pipe and a glue outlet head; The glue feeding head is vertically arranged, and the lower end is connected with the left end of the glue delivery pipe, and the glue barrel is connected with the upper end of the glue feeding head; The glue outlet head is vertically arranged, and the upper end is communicated with the right end of the glue delivery pipe. The lower end of the glue outlet head is passed through the shell and communicated with the glue outlet pipe.

9. The small glue width piezoelectric spray valve according to claim 8, characterized in that: An annular positioning piece is arranged on the closure seat at the periphery of the liquid passage hole, and an annular positioning groove is arranged at the lower end of the glue discharge head, and the annular positioning piece is clamped in the annular positioning groove.

10. The small glue width piezoelectric spray valve according to claim 9, characterized in that: A through hole is arranged at the right end of the rubber delivery pipe, and the through hole is opposite to the rubber outlet head in the upper and lower directions. The reset seat is arranged in the through hole, and the valve core passes through the reset seat and the rubber outlet head in sequence and is arranged in the liquid passage hole.

Images