Ceramic piezoelectric valve and dispensing apparatus

Abstract

The utility model discloses a kind of ceramic piezoelectric valve and glue dispensing equipment.Ceramic piezoelectric valve includes seat body, valve main body, opening subassembly and adjusting subassembly, seat body is equipped with flow channel;Valve main body its inner cavity is hollowly arranged, and is equipped with valve port;Opening subassembly has the axial activity stroke along valve port, to open or close flow channel;Adjusting subassembly is located in valve main body, and is connected with opening subassembly, adjusting subassembly includes adjusting column, adjusting column has the axial activity stroke along valve port, adjusting column activity can drive opening subassembly to move, to open or close valve port;Adjusting column at least has first adjusting section and second adjusting section, first adjusting section and second adjusting section have deformation complementarity, so that the total length of adjusting column remains unchanged.The ceramic piezoelectric valve provided by the utility model can better ensure the glue-dispensing stability of glue dispensing equipment and ensure the glue-dispensing precision of glue dispensing equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of dispensing equipment, specifically to a ceramic piezoelectric valve and dispensing equipment. Background Technology

[0002] The amount of adhesive dispensed by a dispensing machine has a significant impact on product quality. Excessive dispensing can cause adhesive overflow and contaminate other parts of the product; insufficient dispensing can result in incomplete and unstable bonding, affecting product stability. Therefore, a control valve is typically installed at the dispensing nozzle of the dispensing machine. This valve controls the dispensing volume by manipulating the movement of a needle within it. However, after the control valve has been operating for a period of time, the rod driving the needle may deform or shift, altering its travel distance and consequently changing the needle's displacement. This can lead to inaccurate dispensing volume and affect the dispensing accuracy of the dispensing equipment. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the main purpose of this utility model is to provide a ceramic piezoelectric valve and a dispensing device, which aims to solve the problem that the stroke of the traditional dispensing control valve changes during operation, resulting in unstable dispensing of glue and seriously affecting the dispensing accuracy of the dispensing device.

[0004] To achieve the above objectives, this utility model proposes a ceramic piezoelectric valve, comprising:

[0005] The base body is provided with a flow guiding channel;

[0006] The valve body has a hollow inner cavity, and a valve port is provided on one side of the inner cavity. The valve port and the flow guiding channel are connected to each other.

[0007] An opening component is movably disposed on the valve body and at least partially extendable into the flow channel, the opening component having an axial travel along the valve port to open or close the flow channel;

[0008] An adjustment component is disposed within the valve body and connected to the opening component. The adjustment component includes an adjustment column, which has an axial travel along the valve port. The movement of the adjustment column can drive the opening component to move, thereby opening or closing the valve port.

[0009] The adjusting column has at least a first adjusting section and a second adjusting section. The first adjusting section is located close to the opening component, and the first adjusting section and the second adjusting section have complementary deformation properties, so that the total length of the adjusting column remains unchanged.

[0010] Optionally, the first adjusting section and the second adjusting section are bonded together; and / or,

[0011] Both the first adjustment section and the second adjustment section are made of piezoelectric ceramic.

[0012] Optionally, the valve port is located at the bottom of the valve body, and the adjusting column extends along the vertical direction of the seat; the adjusting assembly further includes:

[0013] The first connecting block is located above the second adjusting section;

[0014] The first mating block is located above the first connecting block;

[0015] The first driving block is configured to engage with the first mating block in a wedge shape.

[0016] An adjusting rod is arranged laterally on one side of the first driving block. The adjusting rod pushes the first driving block to move and drives the first mating block to move in the vertical direction of the seat, so that the adjusting column moves in the vertical direction of the seat to act on the opening component.

[0017] Optionally, the valve body has a first cavity for accommodating the adjusting component and a second cavity for accommodating the opening component. The first cavity and the second cavity are connected. A partition is provided at the upper end of the first cavity, and the partition is provided with a mounting hole. The second cavity is connected to the valve port. The first mating block is movably engaged in the mounting hole, and the bottom surface of the first mating block and the top surface of the first connecting block are arranged in a matching arc.

[0018] Optionally, the adjustment assembly further includes a second connecting block, which is disposed at the bottom of the second adjustment section;

[0019] The opening assembly includes an opening lever, a support member connecting the opening lever and the valve body, and a striker located at one end of the opening lever. The second connecting block is pressed against the other end of the opening lever. The opening lever rotates around the support member as a fulcrum. The second adjusting section and the striker are located on both sides of the support member, and the lever arm between the second adjusting section and the support member is smaller than the lever arm between the striker and the support member.

[0020] Optionally, the upper surface of the opening lever is provided with a concave-convex shape at least on one side corresponding to the second connecting block, and the lower surface of the second connecting block is provided with an arc shape that matches the upper surface of the opening lever.

[0021] Optionally, the enabling component further includes:

[0022] A guide cylinder is sleeved at the valve port and at least partially extends into the inner cavity of the valve body. The striking pin is movably sleeved in the guide cylinder, and at least a portion of the guide cylinder can extend into the flow channel.

[0023] The first elastic telescopic member is sleeved on the outside of the firing pin, and its two ends abut against the guide cylinder and the firing pin respectively, and the opening lever is pressed against the top of the firing pin.

[0024] Optionally, the enabling component further includes:

[0025] A limiting block is provided at the end of the valve port and sleeved on the outside of the guide cylinder;

[0026] The second elastic telescopic member is disposed outside the first elastic telescopic member and abuts against the opening lever and the limiting block respectively.

[0027] Optionally, a guide channel is provided on one side of the guide channel, and the guide channel has a valve port that communicates with the guide channel;

[0028] The ceramic piezoelectric valve also includes a fixing block, which is sleeved in the flow channel. The fixing block has a through hole, and the striking pin is movably inserted into the through hole to have a blocking state in which it extends out of the fixing block to block the valve port, and an opening state in which it retracts into the fixing block to open the valve port.

[0029] This utility model also provides a dispensing device, including the above-mentioned ceramic piezoelectric valve.

[0030] The technical solution provided by this utility model has the following beneficial effects:

[0031] The ceramic piezoelectric valve provided by this utility model includes a seat, a valve body, an opening component, and an adjusting component. A flow channel is provided on the seat, and an external adhesive box can be connected to the flow channel, allowing adhesive to flow out from the bottom of the flow channel for dispensing. The valve body is mounted on the seat and connected to the flow channel through the valve port, allowing the opening component to at least partially extend into the flow channel. The movement of the opening component can open or close the flow channel. The adjusting component can drive the opening component to move, and the adjusting column moves axially along the valve port to drive the valve body to open or close. The opening component moves axially along the valve body, thereby opening and closing the flow channel. Furthermore, the adjusting column has a first adjusting section and a second adjusting section. The first adjusting section adjusts the action on the opening component, and the second adjusting section connects to the action on the first adjusting section. The first and second adjusting sections are complementary in their deformation, ensuring that the entire adjusting column maintains a constant total length. This guarantees that the action on the opening component remains unchanged, thus ensuring a consistent dispensing volume. Therefore, it further ensures the dispensing stability and accuracy of the dispensing equipment. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of an embodiment of a ceramic piezoelectric valve provided by this utility model;

[0034] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the ceramic piezoelectric valve described above;

[0035] Figure 3 for Figure 1 A cross-sectional structural diagram of the ceramic piezoelectric valve described herein.

[0036] Explanation of icon numbers:

[0037] 100-Ceramic piezoelectric valve; 1-Seat; 11-Flow guide channel; 12-Glue guide channel; 2-Valve body; 3-Opening assembly; 31-Opening lever; 32-Actuating pin; 33-Guide cylinder; 34-First elastic telescopic component; 35-Second elastic telescopic component; 36-Limiting block; 4-Adjusting assembly; 41-Adjusting column; 411-First adjusting section; 412-Second adjusting section; 42-First connecting block; 43-First mating block; 44-First driving block; 45-Second connecting block; 46-Adjusting rod; 5-Fixing block.

[0038] The realization of the purpose, functional characteristics and excellent effects of this utility model will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] This utility model provides a ceramic piezoelectric valve 100, suitable for dispensing equipment, which allows for better control of the dispensing volume. For details, please refer to... Figures 1 to 2In this embodiment, the ceramic piezoelectric valve 100 includes a seat 1, a valve body 2, an opening component 3, and an adjusting component 4. A flow guiding channel 11 is provided on the seat 1. The inner cavity of the valve body 2 is hollow, and a valve port is opened on one side of the inner cavity. The valve port and the flow guiding channel 11 are connected relative to each other. The opening component 3 is movably mounted on the valve body 2 and at least partially extends into the flow guiding channel 11. The opening component 3 has an axial stroke along the valve port to open or close the flow guiding channel 11. The adjusting component 4 is provided with… Within the valve body 2 and connected to the opening assembly 3, the adjusting assembly 4 includes an adjusting column 41. The adjusting column 41 has an axial travel along the valve port. The movement of the adjusting column 41 can drive the opening assembly 3 to move, thereby opening or closing the valve port. The adjusting column 41 has at least a first adjusting section 411 and a second adjusting section 412. The first adjusting section 411 is disposed close to the opening assembly 3, and the first adjusting section 411 and the second adjusting section 412 have complementary deformation properties, so that the total length of the adjusting column 41 remains unchanged.

[0043] In this embodiment, a flow channel 11 is provided on the base 1, and an external glue box can be connected to the flow channel 11. Glue can flow out from the bottom of the flow channel 11 for dispensing. The valve body 2 is installed on the base 1 and connected to the flow channel 11 through the valve port, allowing the opening component 3 to at least partially extend into the flow channel 11. The movement of the opening component 3 can open or close the flow channel 11. The adjusting component 4 can drive the opening component 3 to move, and the adjusting column 41 moves axially along the valve port, causing the opening component 3 to move axially along the valve body. The adjustment column 41 is activated to open and close the flow channel 11. Furthermore, the adjustment column 41 has a first adjustment section 411 and a second adjustment section 412. The first adjustment section 411 is adjustable to act on the opening component 3, and the second adjustment section 412 is connected to act on the first adjustment section 411. The first adjustment section 411 and the second adjustment section 412 have complementary deformation properties, ensuring that the total length of the adjustment column 41 remains constant. This guarantees that the effect on the opening component 3 will not change, thus ensuring that the dispensing volume remains constant. Therefore, it further ensures the dispensing stability and accuracy of the dispensing equipment.

[0044] The base 1 is generally square in shape, and a glue guiding channel 12 is provided on one side of the flow guiding channel 11. The glue guiding channel 12 has a valve port that communicates with the flow guiding channel 11. The other end of the glue guiding channel 12 can be connected to a glue storage box or glue storage cylinder through a Luer connector, so that glue can flow from the glue guiding channel 12 into the flow guiding channel 11. The glue dispensing amount is controlled by sealing or opening the valve port through the opening component 3.

[0045] The valve body 2 is also generally square in shape. It should be noted that when the ceramic piezoelectric valve 100 is in normal use, the adhesive guiding channel 12 is inclined downwards towards the flow guiding channel 11 to facilitate the flow of adhesive into the flow guiding channel 11. The valve body 2 is located above the seat 1, and the bottom of the valve body 2 abuts against the seat 1 via four spherical surfaces, creating a certain gap between the valve body 2 and the seat 1 while ensuring more stable support. The valve port is located at the bottom of the valve body 2 and is positioned directly opposite the upper opening of the flow guiding channel 11. All descriptions of orientation in this utility model are based on the above.

[0046] The adjustment component 4 is generally elongated and installed in the inner cavity of the valve body 2 along the vertical direction. The first adjustment segment 411 and the second adjustment segment 412 are bonded together, and the first adjustment segment 411 is located below the second adjustment segment 412. The length of the first adjustment segment 411 is greater than the length of the second adjustment segment 412.

[0047] More preferably, both the first adjusting section 411 and the second adjusting section 412 are made of piezoelectric ceramic. The deformation of the second adjusting section 412 is complementary to that of the first adjusting section 411, so as to ensure that the length of the adjusting column 41 remains unchanged, thereby ensuring that the stroke acting on the opening component 3 does not change.

[0048] Of course, in one embodiment, a detection device and a power supply component may also be provided in the valve body 2. The detection device can detect the deformation of the first adjustment section 411 in real time. The power supply component is electrically connected to the second adjustment section 412. Based on the deformation of the first adjustment section 411, the voltage value applied to the second adjustment section 412 is calculated so that the second adjustment section 412 can form a corresponding compensation deformation to achieve automatic compensation adjustment. This can more intelligently ensure the length of the adjustment column 41 in real time and better ensure the stability of the glue output.

[0049] Preferably, combined with Figure 2 and Figure 3As shown, the valve port is located at the bottom of the valve body 2, and the adjusting column 41 extends along the vertical direction of the seat 1. The adjusting assembly 4 also includes a first connecting block 42, a first mating block 43, and a first driving block 44. The first connecting block 42 is located above the second adjusting section 412; the first mating block 43 is located above the first connecting block 42; the first driving block 44 and the first mating block 43 are wedge-shaped; the adjusting rod 46 is arranged laterally on one side of the first driving block 44. The adjusting rod 46 pushes the first driving block 44 to move and drives the first mating block 43 to move along the vertical direction of the seat 1, so that the adjusting column 41 moves along the vertical direction of the seat 1 to act on the opening assembly 3. An adjusting hole can be opened on the side of the valve body 2. The adjusting component can be manually or driven to extend into the adjusting hole to drive the adjusting component to move, thereby driving the entire adjusting assembly 4 to move, making the structure more compact and the adjustment accuracy higher.

[0050] Furthermore, combined Figure 2 and Figure 3 As shown, the valve body 2 has a first cavity for accommodating the adjusting component 4 and a second cavity for accommodating the opening component 3. Both the first and second cavities extend vertically and are arranged side-by-side horizontally, allowing for easier partitioned assembly when installing the adjusting component 4 and the opening component 3. The first and second cavities are connected. A partition with mounting holes is provided at the upper end of the first cavity. The second cavity is connected to the valve port. The first mating block 43 is movably engaged within the mounting hole, and the bottom surface of the first mating block 43 and the top surface of the first connecting block 42 are arranged in a matching arc shape, resulting in better and more sensitive pushing action compared to large-area surface contact.

[0051] Moreover, such as Figure 3 As shown, the adjusting component 4 further includes a second connecting block 45, which is located at the bottom of the second adjusting section 412. The opening component 3 includes an opening lever 31, a support member connecting the opening lever 31 and the valve body 2, and a striker 32 located at one end of the opening lever 31. The second connecting block 45 is pressed against the other end of the opening lever 31. The opening lever 31 rotates around the support member. The second adjusting section 412 and the striker 32 are located on opposite sides of the support member, and the lever arm between the second adjusting section 412 and the support member is smaller than the lever arm between the striker 32 and the support member. Based on the lever principle, a smaller displacement is generated by the second connecting block 45, allowing the striker 32 to achieve a larger displacement, saving space and improving the control of the dispensing effect.

[0052] Furthermore, the upper surface of the opening lever 31 is provided with a concave-convex shape at least on one side corresponding to the second connecting block 45, and the lower surface of the second connecting block 45 is provided with an arc shape adapted to the upper surface of the opening lever 31. By adapting the shape of the opening lever 31 to accommodate the movement, the opening lever 31 has sufficient rotation space, and the contact area between the second connecting block 45 and the opening lever 31 is smaller while the fit is better, resulting in better sensitivity when force is applied. Moreover, dividing the adjusting component 4 into multiple connecting segments allows for better adjustment of the material properties of different connecting segments and facilitates maintenance.

[0053] Preferably, the opening assembly 3 further includes a guide cylinder 33 and a first elastic telescopic member 34. The guide cylinder 33 is sleeved at the valve port and at least partially extends into the inner cavity of the valve body 2. The striking pin 32 is movably sleeved within the guide cylinder 33, and at least a portion of the guide cylinder 33 can extend into the flow channel 11. The guide cylinder 33 can better limit the movement of the striking pin 32, ensuring the stability of the striking pin 32's movement. The first elastic telescopic member 34 is sleeved outside the striking pin 32, and its two ends abut against the guide cylinder 33 and the striking pin 32 respectively. The opening lever 31 presses against the top of the striking pin 32, so that when the striking pin 32 moves downward under the pressure of the opening lever 31, the first elastic telescopic member 34 can be in a contracted state. When the opening lever 31 releases pressure, the striking pin 32 can be automatically reset by the elastic restoring force of the first elastic telescopic member 34. The first elastic telescopic member 34 can be configured as a spring.

[0054] Furthermore, such as Figure 3 As shown, the opening assembly 3 further includes a limiting block 36 and a second elastic telescopic member 35. The limiting block 36 is located at the end of the valve port and sleeved on the outside of the guide cylinder 33. The second elastic telescopic member 35 surrounds the outside of the first elastic telescopic member 34 and abuts against the opening lever 31 and the limiting block 36. The limiting block 36 can better limit the second elastic telescopic member 35. When the opening lever 31 presses against the striker 32, the second elastic telescopic member 35 is also in a compressed state. When the opening lever 31 does not press against the striker 32, the elastic restoring force of the second elastic telescopic member 35 can drive the opening lever 31 to return to its original position. At the same time, the second elastic telescopic member 35 also acts as a buffer, preventing the opening lever 31 from acting hard on the striker 32, thus better protecting the striker 32.

[0055] Furthermore, the ceramic piezoelectric valve 100 also includes a fixing block 5, which is sleeved within the flow channel 11. The fixing block 5 has a through hole, and the striking pin 32 is movably inserted through the through hole, allowing it to be in a blocking state (extending out of the fixing block 5 to seal the valve port) and an opening state (retracting into the fixing block 5 to open the valve port). By controlling the time the striking pin 32 opens the valve port, the amount of adhesive dispensed is controlled.

[0056] This utility model also provides a dispensing device, including the aforementioned ceramic piezoelectric valve 100. The ceramic piezoelectric valve 100 can make the dispensing device dispense more stable, the dispensing accuracy higher, and effectively improve the dispensing quality.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A ceramic piezoelectric valve, characterized in that, include: The base body is provided with a flow guiding channel; The valve body has a hollow inner cavity, and a valve port is provided on one side of the inner cavity. The valve port and the flow guiding channel are connected to each other. An opening component is movably disposed on the valve body and at least partially extendable into the flow channel, the opening component having an axial travel along the valve port to open or close the flow channel; An adjustment component is disposed within the valve body and connected to the opening component. The adjustment component includes an adjustment column, which has an axial travel along the valve port. The movement of the adjustment column can drive the opening component to move, thereby opening or closing the valve port. The adjusting column has at least a first adjusting section and a second adjusting section. The first adjusting section is located close to the opening component, and the first adjusting section and the second adjusting section have complementary deformation properties, so that the total length of the adjusting column remains unchanged.

2. The ceramic piezoelectric valve as described in claim 1, characterized in that, The first adjustment section and the second adjustment section are bonded together; and / or, Both the first adjustment section and the second adjustment section are made of piezoelectric ceramic.

3. The ceramic piezoelectric valve as described in claim 1, characterized in that, The valve port is located at the bottom of the valve body, and the adjusting column extends along the vertical direction of the seat; the adjusting assembly further includes: The first connecting block is located above the second adjusting section; The first mating block is located above the first connecting block; The first driving block is configured to engage with the first mating block in a wedge shape. An adjusting rod is arranged laterally on one side of the first driving block. The adjusting rod pushes the first driving block to move and drives the first mating block to move in the vertical direction of the seat, so that the adjusting column moves in the vertical direction of the seat to act on the opening component.

4. The ceramic piezoelectric valve of claim 3, wherein The valve body has a first cavity for accommodating the adjusting component and a second cavity for accommodating the opening component. The first cavity and the second cavity are connected. A partition is provided at the upper end of the first cavity, and the partition is provided with a mounting hole. The second cavity is connected to the valve port. The first mating block is movably engaged in the mounting hole, and the bottom surface of the first mating block and the top surface of the first connecting block are set in a matching arc.

5. The ceramic piezoelectric valve of claim 3, wherein, The adjustment assembly further includes a second connecting block, which is located at the bottom of the second adjustment section; The opening assembly includes an opening lever, a support member connecting the opening lever and the valve body, and a striker located at one end of the opening lever. The second connecting block is pressed against the other end of the opening lever. The opening lever rotates around the support member as a fulcrum. The second adjusting section and the striker are located on both sides of the support member, and the lever arm between the second adjusting section and the support member is smaller than the lever arm between the striker and the support member.

6. The ceramic piezoelectric valve of claim 5, wherein, The upper surface of the opening lever is provided with a concave-convex shape at least on one side corresponding to the second connecting block, and the lower surface of the second connecting block is provided with an arc shape that matches the upper surface of the opening lever.

7. The ceramic piezoelectric valve of claim 5, wherein, The enabling component also includes: A guide cylinder is sleeved at the valve port and at least partially extends into the inner cavity of the valve body. The striking pin is movably sleeved in the guide cylinder, and at least a portion of the guide cylinder can extend into the flow channel. The first elastic telescopic member is sleeved on the outside of the firing pin, and its two ends abut against the guide cylinder and the firing pin respectively, and the opening lever is pressed against the top of the firing pin.

8. The ceramic piezoelectric valve of claim 7, wherein, The enabling component also includes: A limiting block is provided at the end of the valve port and sleeved on the outside of the guide cylinder; The second elastic telescopic member is disposed outside the first elastic telescopic member and abuts against the opening lever and the limiting block respectively.

9. The ceramic piezoelectric valve of claim 5 wherein, A guide channel is provided on one side of the flow channel, and the guide channel has a valve port that communicates with the flow channel; The ceramic piezoelectric valve also includes a fixing block, which is sleeved in the flow channel. The fixing block has a through hole, and the striking pin is movably inserted into the through hole to have a blocking state in which it extends out of the fixing block to block the valve port, and an opening state in which it retracts into the fixing block to open the valve port.

10. A dispensing apparatus, comprising: Includes the ceramic piezoelectric valve as described in any one of claims 1 to 9.

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