Piezoelectric valve nozzle of dispensing machine

Abstract

The utility model discloses a glue dispenser piezoelectric valve nozzle which comprises a liquid guide connector, a piezoelectric valve assembly, a positioning assembly and a needle head assembly, the liquid guide connector is arranged on the left side of an inner cavity of the positioning assembly, the piezoelectric valve assembly is arranged on the right side of the inner cavity of the positioning assembly, and the needle head assembly is arranged at the bottom of the piezoelectric valve assembly. The positioning assembly comprises a positioning block, a sliding block, a connecting block, a first threaded frame, a positioning seat, an annular positioning clamping seat, a second threaded frame and a sliding groove, the piezoelectric valve assembly comprises a piezoelectric valve body, a threaded groove and a liquid guide pipe, and the needle head assembly comprises a mounting sleeve, a threaded pipe, a first sealing ring and a needle head body. The piezoelectric valve nozzle of the dispensing machine has the advantages of being convenient to disassemble and operate, and solves the problems that in the prior art, when a needle head is installed, the whole needle head needs to be disassembled, meanwhile, when the whole piezoelectric valve is replaced and maintained, the operation steps are tedious, time and labor are wasted, and the production efficiency is affected.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric valve technology, specifically to a piezoelectric valve nozzle for a dispensing machine. Background Technology

[0002] With the recognition of the electronics, automotive, energy, and biopharmaceutical industries, piezoelectric jet valves have replaced existing production equipment in some domestic and foreign companies, thereby improving production efficiency and quality. The advantages of piezoelectric structures, such as small size, extremely high displacement resolution, fast response speed, low voltage drive, and large output force, also determine the dominant market position of piezoelectric jet valves. However, facing a broader market, new challenges have also emerged. The diversification of jet fluid types has improved nozzle technology.

[0003] The piezoelectric valve nozzle in a dispensing machine requires frequent needle replacement as needed. However, the needles in the existing technology require complete disassembly during installation. At the same time, the operation steps for replacing and maintaining the entire piezoelectric valve are also cumbersome, time-consuming and labor-intensive, which affects production efficiency. Therefore, there is an urgent need for a piezoelectric valve nozzle for dispensing machines to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide a piezoelectric valve nozzle for a dispensing machine, which has the advantages of easy disassembly and convenient operation, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a piezoelectric valve nozzle for a dispensing machine, comprising a liquid guide connector, a piezoelectric valve assembly, a positioning assembly, and a needle assembly. The liquid guide connector is disposed on the left side of the inner cavity of the positioning assembly, the piezoelectric valve assembly is disposed on the right side of the inner cavity of the positioning assembly, and the needle assembly is disposed at the bottom of the piezoelectric valve assembly. The positioning assembly includes a positioning block, a slider, a connecting block, a first threaded bracket, a positioning seat, an annular positioning seat, a second threaded bracket, and a sliding groove. The piezoelectric valve assembly includes a piezoelectric valve body, a threaded groove, and a liquid guide tube. The needle assembly includes an installation sleeve, a threaded tube, a first sealing ring, and a needle body. The liquid guide tube is connected to the bottom of the piezoelectric valve body, and the threaded groove is formed in the inner cavity of the piezoelectric valve body.

[0006] Furthermore, the positioning seat is disposed on the front side of the piezoelectric valve body, the annular positioning bracket is disposed on the back side of the piezoelectric valve body, and the connecting block is fixedly installed on the right side of the annular positioning bracket.

[0007] Furthermore, the positioning block is fixedly installed on the right side of the connecting block, the slide groove is formed inside the positioning block, and the slider slides inside the slide groove.

[0008] Furthermore, the left side of the slider is fixedly connected to the right side of the positioning seat, and the first threaded bracket rotates inside the slider via a thread.

[0009] Furthermore, the surface of the liquid guide connector contacts the inner surface of the annular positioning bracket, and the second threaded bracket rotates inside the annular positioning bracket via threads.

[0010] Furthermore, the mounting sleeve is fixedly installed on the top of the needle body, the threaded tube is disposed in the inner cavity of the mounting sleeve, and the bottom of the liquid guide connector is connected to the left side of the piezoelectric valve body by bolts.

[0011] Furthermore, the bottom of the threaded tube is connected to the top of the needle body, the first sealing ring is fixedly installed in the inner cavity of the mounting sleeve, and the second sealing ring is fixedly installed in the inner cavity of the threaded tube.

[0012] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are:

[0013] This invention uses a positioning component to fix the piezoelectric valve assembly and the liquid guide connector. The liquid guide connector supplies liquid to the piezoelectric valve assembly, and the needle assembly sprays adhesive. When replacing the needle assembly, the user simply rotates the mounting sleeve, causing the threaded tube to rotate and disengage from the threaded groove. Simultaneously, the mounting sleeve is pulled downwards, disengaging the liquid guide tube from the inner cavity of the threaded tube, and the piezoelectric valve body from the inner cavity of the first sealing ring, thus disassembling the needle body. Installation is the reverse of this process. To disassemble and maintain the piezoelectric valve body, the first threaded bracket is rotated, causing the slider to move forward, releasing the limiting position on the piezoelectric valve body. Then, the bolt is rotated to disengage the liquid guide connector from the left side of the piezoelectric valve body, thus disassembling it. This design offers the advantages of convenient disassembly and operation, solving the problems of existing needles requiring complete disassembly for installation and the cumbersome, time-consuming, and labor-intensive procedures for replacing and maintaining the entire piezoelectric valve, which negatively impacts production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the positioning component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the positioning block of this utility model from another perspective;

[0017] Figure 4 This is a schematic diagram of the piezoelectric valve assembly structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the needle assembly structure of this utility model.

[0019] In the diagram: 1. Liquid guide connector; 2. Piezoelectric valve assembly; 21. Piezoelectric valve body; 22. Threaded groove; 23. Liquid guide tube; 3. Positioning assembly; 31. Positioning block; 32. Slider; 33. Connecting block; 34. First threaded bracket; 35. Positioning seat; 36. Annular positioning bracket; 37. Second threaded bracket; 38. Slide groove; 4. Needle assembly; 41. Mounting sleeve; 42. Threaded tube; 43. First sealing ring; 44. Needle body. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] This utility model provides, for example Figure 1-5 As shown, a piezoelectric valve nozzle for a dispensing machine includes a liquid guide connector 1, a piezoelectric valve assembly 2, a positioning assembly 3, and a needle assembly 4. The liquid guide connector 1 is located on the left side of the inner cavity of the positioning assembly 3, the piezoelectric valve assembly 2 is located on the right side of the inner cavity of the positioning assembly 3, and the needle assembly 4 is located at the bottom of the piezoelectric valve assembly 2. The positioning assembly 3 includes a positioning block 31, a slider 32, a connecting block 33, a first threaded bracket 34, a positioning seat 35, an annular positioning seat 36, a second threaded bracket 37, and a sliding groove 38. The piezoelectric valve assembly 2 includes a piezoelectric valve body 21, a threaded groove 22, and a liquid guide tube 23. The needle assembly 4 includes an installation sleeve 41, a threaded tube 42, a first sealing ring 43, and a needle body 44. The liquid guide tube 23 is connected to the bottom of the piezoelectric valve body 21, and the threaded groove 22 is formed in the inner cavity of the piezoelectric valve body 21.

[0022] More specifically, by setting the needle assembly 4 to mainly spray the glue, when replacing the needle assembly 4, the user directly rotates the installation sleeve 41, which drives the threaded tube 42 to rotate, thereby disengaging it from the inside of the threaded groove 22. At the same time, the installation sleeve 41 is pulled downwards, at which point the liquid guide tube 23 disengages from the inner cavity of the threaded tube 42, and the piezoelectric valve body 21 disengages from the inner cavity of the first sealing ring 43, thereby disassembling the needle body 44. The installation is carried out in the reverse order. When disassembling and maintaining the piezoelectric valve body 21, the first threaded bracket 34 is directly rotated, which drives the slider 32 to move forward, releasing the limit on the piezoelectric valve body 21. Then, the bolt is rotated to disengage the liquid guide connector 1 from the connection on the left side of the piezoelectric valve body 21, thereby disassembling it. It has the advantages of convenient disassembly and easy operation.

[0023] In some embodiments, the positioning seat 35 is disposed on the front side of the piezoelectric valve body 21, the annular positioning bracket 36 is disposed on the back side of the piezoelectric valve body 21, and the connecting block 33 is fixedly installed on the right side of the annular positioning bracket 36. More specifically, the annular positioning bracket 36 is used to limit the back side of the piezoelectric valve body 21 and fix the area around the liquid guide connector 1, while the positioning seat 35 is used to fix the front side of the piezoelectric valve body 21.

[0024] In some embodiments, the positioning block 31 is fixedly installed on the right side of the connecting block 33, the slide groove 38 is formed inside the positioning block 31, and the slider 32 slides inside the slide groove 38. More specifically, the connecting block 33 facilitates the connection between the annular positioning seat 36 and the positioning block 31, and the slide groove 38 limits the slider 32 to prevent the slider 32 from shaking during movement.

[0025] In some embodiments, the left side of the slider 32 is fixedly connected to the right side of the positioning seat 35, and the first threaded bracket 34 rotates inside the slider 32 by thread. More specifically, the slider 32 is used to limit the positioning seat 35 to prevent the positioning seat 35 from shaking during movement.

[0026] In some embodiments, the surface of the liquid guide connector 1 contacts the inner surface of the annular positioning bracket 36, and the second threaded bracket 37 rotates inside the annular positioning bracket 36 by thread. More specifically, the position of the slider 32 is adjusted by setting the first threaded bracket 34, and the front side of the liquid guide connector 1 is fixed by setting the second threaded bracket 37.

[0027] In some embodiments, the mounting sleeve 41 is fixedly mounted on the top of the needle body 44, the threaded tube 42 is disposed in the inner cavity of the mounting sleeve 41, and the bottom of the liquid guide connector 1 is connected to the left side of the piezoelectric valve body 21 by bolts. More specifically, the mounting sleeve 41 is provided to facilitate the rotation of the needle body 44, and the threaded tube 42 is provided to accommodate and seal the liquid guide tube 23.

[0028] In some embodiments, the bottom of the threaded tube 42 is connected to the top of the needle body 44, the first sealing ring 43 is fixedly installed in the inner cavity of the mounting sleeve 41, and the inner cavity of the threaded tube 42 is fixedly installed with a second sealing ring. More specifically, the gap between the surface of the piezoelectric valve body 21 and the inner cavity of the mounting sleeve 41 is sealed by setting the first sealing ring 43.

[0029] Working principle:

[0030] Step 1: The positioning component 3 is used to fix the piezoelectric valve assembly 2 and the liquid guide connector 1. The liquid guide connector 1 is used to supply liquid to the piezoelectric valve assembly 2. The needle assembly 4 is used to spray the adhesive. When replacing the needle assembly 4, the user directly rotates the installation sleeve 41. Under the action of the installation sleeve 41, the threaded tube 42 rotates, thereby disengaging from the inside of the threaded groove 22. At the same time, the installation sleeve 41 is pulled downwards with force.

[0031] Step 2: At this time, the liquid guide tube 23 is disengaged from the inner cavity of the threaded tube 42, and the piezoelectric valve body 21 is disengaged from the inner cavity of the sealing ring 43, thereby disassembling the needle body 44. The installation is carried out in the reverse order of the above steps. When disassembling and maintaining the piezoelectric valve body 21, directly rotate the first threaded bracket 34, and drive the slider 32 to move forward through the first threaded bracket 34 to release the limit on the piezoelectric valve body 21. Then rotate the bolt to disengage the liquid guide connector 1 from the connection on the left side of the piezoelectric valve body 21, thereby disassembling it. It has the advantages of convenient disassembly and easy operation.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A piezoelectric valve nozzle for a dispensing machine, characterized in that: The utility model provides a kind of needle injection device, including guide liquid connector (1), piezoelectric valve assembly (2), positioning assembly (3) and needle head assembly (4), the guide liquid connector (1) is arranged in the left side of the inner cavity of positioning assembly (3), the piezoelectric valve assembly (2) is arranged in the right side of the inner cavity of positioning assembly (3), the needle head assembly (4) is arranged in the bottom of piezoelectric valve assembly (2), the positioning assembly (3) includes positioning block (31), slider (32), connecting block (33), first threaded frame (34), positioning seat (35), annular positioning card seat (36), second threaded frame (37) and sliding slot (38), the piezoelectric valve assembly (2) includes piezoelectric valve body (21), threaded groove (22) and guide liquid pipe (23), the needle head assembly (4) includes mounting sleeve (41), threaded tube (42), first sealing ring (43) and needle body (44), the guide liquid pipe (23) is communicated in the bottom of piezoelectric valve body (21), the threaded groove (22) is set in the inner cavity of piezoelectric valve body (21).

2. The piezoelectric valve nozzle of a dispensing machine of claim 1, wherein: The positioning seat (35) is arranged on the front face of piezoelectric valve body (21), the annular positioning card seat (36) is arranged on the back face of piezoelectric valve body (21), and the connecting block (33) is fixedly installed on the right side of the annular positioning card seat (36).

3. The piezoelectric valve nozzle of claim 1, wherein: The positioning block (31) is fixedly installed on the right side of the connecting block (33), the sliding slot (38) is arranged in the inside of the positioning block (31), and the slider (32) is slidably arranged in the sliding slot (38).

4. The piezoelectric valve nozzle of claim 1, wherein: The left side of the slider (32) is fixedly connected with the right side of the positioning seat (35), and the first threaded frame (34) is rotatably arranged in the inside of the slider (32) by screwing.

5. The piezoelectric valve nozzle of claim 1, wherein: The surface of the guide liquid connector (1) is in contact with the inner surface of the annular positioning card seat (36), and the second threaded frame (37) is rotatably arranged in the inside of the annular positioning card seat (36) by screwing.

6. The piezoelectric valve nozzle of a dispensing machine of claim 1, wherein: The mounting sleeve (41) is fixedly installed on the top of the needle body (44), the threaded tube (42) is arranged in the inner cavity of the mounting sleeve (41), and the bottom of the guide liquid connector (1) is communicated with the left side of the piezoelectric valve body (21) by bolts.

7. The piezoelectric valve nozzle of a dispensing machine of claim 1, wherein: The bottom of the threaded tube (42) is communicated with the top of the needle body (44), the first sealing ring (43) is fixedly installed in the inner cavity of the mounting sleeve (41), and the second sealing ring is fixedly installed in the inner cavity of the threaded tube (42).

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