Ceramic dispensing valve and dispensing device

Abstract

The utility model discloses a ceramic dispensing valve and a dispensing device, and relates to the technical field of dispensing equipment. A screw cavity communicating with the containing cavity is formed in the screw cavity, a glue outlet communicating with the screw cavity is formed in the bottom end of the screw cavity, and a glue inlet communicating with the screw cavity is further formed in the side wall of the screw cavity; the glue supply part is used for conveying glue into the screw cavity through the glue inlet; the ceramic screw rod is rotationally arranged in the accommodating cavity, and the bottom end of the ceramic screw rod extends into the screw rod cavity and extends to the glue outlet; the outer side surface of the ceramic sleeve abuts against the inner wall of the screw cavity so as to prevent the rubber body from making contact with the screw cavity. By the adoption of the technical scheme, the ceramic screw is adopted to replace a screw made of a metal material, meanwhile, the ceramic sleeve is arranged outside the ceramic screw in a sleeving mode, metal dust cannot be generated in the rotating process of the ceramic screw, the situation that products are bad due to the fact that the products are coated with the metal dust is avoided, the structure is compact, practicability is high, and market popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dispensing equipment, and particularly relates to a ceramic dispensing valve and a dispensing device. Background Art

[0002] Dispensing technology is widely used in the electronic manufacturing industry. Among them, non-contact jet dispensing has the advantages of high jetting frequency, small dispensing diameter, uniform and consistent glue dots, etc., so it has been greatly developed in the industry.

[0003] Most of the existing screw valves on the market are composed of a needle, a screw, a barrel component, a valve body, a body, a motor, etc. When the screw valve works, the fluid enters the valve body from the barrel by air pressure and fills at the screw. The motor rotates to drive the screw to rotate, and the fluid is transported to the needle through the flow channel on the screw and evenly dispensed on the product. When the motor stops rotating, the screw valve stops dispensing glue. However, since the traditional screw and valve body are both made of metal stainless steel material, when the motor drives the screw to rotate at a high speed, due to continuous friction, metal dust will be peeled off from the screw or the inner wall of the valve body, and finally the metal dust will be coated on the product, resulting in product defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a ceramic dispensing valve and a dispensing device for the defects and deficiencies in the prior art.

[0005] The technical solution adopted by the ceramic dispensing valve provided by the utility model is: a ceramic dispensing valve, comprising:

[0006] A base, which has a receiving cavity inside;

[0007] A screw cavity body, which is arranged below the base, and has a screw cavity inside it that is communicated with the receiving cavity. The bottom end of the screw cavity body is provided with a glue outlet that is communicated with the screw cavity, and a glue inlet that is communicated with the screw cavity is also provided on the side wall of the screw cavity body;

[0008] A glue supply member, which is used to transport the colloid to the screw cavity through the glue inlet;

[0009] A ceramic screw, which is rotatably arranged in the receiving cavity, and its bottom end extends into the screw cavity and reaches the glue outlet; and

[0010] A ceramic sleeve, which is fixedly arranged in the screw cavity and is adapted to the length of the screw cavity. The outer surface of it abuts against the inner wall of the screw cavity to prevent the colloid from contacting the screw cavity.

[0011] Optionally, the glue supply member includes a glue bucket, a glue bucket connector detachably provided at the bottom end of the glue bucket, and a glue inlet pipe communicating with the glue bucket connector. A glue bucket mounting bracket for fixing the glue bucket connector is provided on the base. One end of the glue inlet pipe communicates with the glue bucket connector, and the other end of the glue inlet pipe extends downward from the bottom end of the glue bucket mounting bracket and communicates with the glue inlet.

[0012] Optionally, the glue bucket connector is made of PEEK material.

[0013] Optionally, a glue inlet connector is provided at the end of the glue inlet pipe away from the glue bucket connector. The glue inlet connector is partially inserted into the glue inlet, and the glue inlet connector is welded and fixed to the outer surface of the screw cavity.

[0014] Optionally, a bearing is sleeved on the part of the ceramic screw located in the accommodation cavity. The bearing is fixedly installed in the accommodation cavity to position and fix the ceramic screw through the bearing.

[0015] Optionally, a glue suction port communicating with the screw cavity is further opened on the screw cavity. A glue suction joint is communicated at the glue suction port. One end of the glue suction joint away from the glue suction port is communicated with a glue suction pipe, and a glue suction mechanism is provided at the end of the glue suction pipe away from the glue suction joint.

[0016] Optionally, the glue suction port is located above the glue inlet. The glue suction joint is partially inserted into the glue suction port, and the glue suction joint is welded and fixed to the outer surface of the screw cavity.

[0017] Optionally, a convex edge is provided at the upper part of the screw cavity. The ceramic screw has a convex table surface that abuts and cooperates with the convex edge, and a PEEK gasket for abutting against the convex table surface of the ceramic screw is provided on the convex edge.

[0018] Optionally, a sealing rubber ring is further provided between the ceramic screw and the screw cavity. The sealing rubber ring is located at one end of the screw cavity close to the accommodation cavity, and the sealing rubber ring is used to seal the gap between the ceramic screw and the screw cavity.

[0019] The present invention also provides a dispensing device, including a machine body and the ceramic dispensing valve as described above.

[0020] After adopting the above technical solutions, the beneficial effects of the present invention are as follows:

[0021] 1. When this application is in use, the colloid is transported to the screw cavity through the glue supply component. At this time, an external driving component drives the ceramic screw to rotate, so as to extrude the colloid in the screw cavity from the glue outlet. By using a ceramic screw to replace the screw made of metal material, and at the same time sleeving a ceramic sleeve outside the ceramic screw, metal dust will not be generated when the ceramic screw rotates at high speed, avoiding the situation that the product is defective due to the metal dust being coated on the product and ensuring the product quality;

[0022] 2. In this application, by setting the glue bucket joint to be made of PEEK material instead of the conventional metal material, when the colloid is transported in the screw cavity of the screw, the colloid will not come into contact with metal, thus ensuring the purity of the colloid and further reducing the defects of the product;

[0023] 3. In this application, by inserting the glue inlet joint and the back suction glue joint into the glue inlet and the back suction glue outlet respectively, and welding and fixing the glue inlet joint and the back suction glue joint on the outer surface of the screw cavity, it can effectively avoid the situation that the metal dust generated by the threaded connection method contaminates the colloid, thereby reducing the defects of the product;

[0024] 4. In this application, by arranging a convex edge in the screw cavity to abut and cooperate with the convex table surface on the ceramic screw, the limit of the ceramic screw is further realized, ensuring the stability of the ceramic screw. At the same time, through the setting of the PEEK gasket, the ceramic screw is not easily worn, and the service life of the ceramic screw is prolonged;

[0025] 5. In this application, the gap between the ceramic screw and the screw cavity is sealed by a sealing rubber ring, so that the colloid in the screw cavity is not easily upwardly flowed into the accommodating cavity. The structure is simple and practical, and the reliability of the dispensing process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

[0027] Figure 1 is the overall structural schematic diagram of this embodiment;

[0028] Figure 2 is the cross-sectional view of this embodiment;

[0029] Figure 3 is Figure 2 the enlarged view of part A in

[0030] Figure 4 is Figure 2Enlarged view of part B;

[0031] Figure 5 is the exploded view of this embodiment.

[0032] Description of reference numerals: 10, base; 11, receiving cavity; 12, glue bucket mounting bracket; 13, bearing; 20, screw cavity body; 21, screw cavity; 211, convex edge; 212, PEEK gasket; 22, glue outlet; 23, glue inlet; 24, back suction glue port; 25, back suction glue joint; 26, back suction glue pipe; 27, sealing rubber ring; 30, glue supply member; 31, glue bucket joint; 32, glue inlet pipe; 33, glue inlet joint; 40, ceramic screw; 50, ceramic sleeve. Detailed implementation manners

[0033] Next, in combination with the attached drawings in the embodiments of the present utility model Figures 1-4 the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential", etc. of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms such as the first and the second are only used to distinguish multiple components or structures with the same or similar structures, and do not represent a special limitation on the setting order or connection relationship.

[0035] This embodiment relates to a ceramic dispensing valve. Referring to Figures 1-5 it includes a base 10, a screw cavity body 20, a glue supply member 30, a ceramic screw 40 and a ceramic sleeve 50. Among them, the base 10 has a receiving cavity 11 inside, the screw cavity body 20 is fixedly installed below the base 10, a screw cavity 21 communicating with the receiving cavity 11 is arranged inside the screw cavity body 20, a glue outlet 22 communicating with the screw cavity 21 is opened at the bottom end of the screw cavity body 20, a glue inlet 23 communicating with the screw cavity 21 is also opened on the side wall of the screw cavity body 20, and the centers of the receiving cavity 11, the screw cavity 21 and the glue outlet 22 are located on the same vertical line.

[0036] The glue supply member 30 is used to convey the colloid through the glue inlet 23 into the screw cavity 21. The ceramic screw 40 is rotatably arranged in the accommodation cavity 11. The ceramic screw 40 is vertically arranged, and the bottom end of the ceramic screw 40 extends into the screw cavity 21 and extends to the glue outlet 22. The ceramic sleeve 50 is fixedly arranged in the screw cavity 21, and its length is adapted to that of the screw cavity 21. The ceramic screw 40 passes through the screw cavity 21, and the outer surface of the ceramic sleeve 50 abuts against the inner wall of the screw cavity 21 to prevent the colloid from contacting the screw cavity 21.

[0037] It can be understood that during use, an external driving member (such as a motor) drives the ceramic screw 40 to rotate, so that when the ceramic screw 40 rotates, the colloid conveyed into the screw cavity 21 by the glue supply member 30 is extruded from the glue outlet 22, thereby realizing dispensing. Through the arrangement of the ceramic screw 40 and the ceramic sleeve 50, the ceramic screw 40 will not generate metal dust due to friction during rotation, thus ensuring the purity of the colloid and reducing product defects. At the same time, through the arrangement of the ceramic sleeve 50, the colloid will not contact the screw cavity body 20, thus effectively avoiding the situation of generating metal dust due to the contact between the screw cavity body 20 and the colloid when the ceramic screw 40 rotates at high speed.

[0038] Further, the glue supply member 30 includes a glue bucket (not shown in the figure), a glue bucket joint 31 detachably arranged at the bottom end of the glue bucket, and a glue inlet pipe 32 communicating with the glue bucket joint 31. Among them, a glue bucket mounting bracket 12 for fixing the glue bucket joint 31 is arranged on the base 10. The glue bucket joint 31 is fixed through the glue bucket mounting bracket 12, thereby realizing the fixation of the glue bucket. And when the colloid in the glue bucket is used up, the glue bucket can be removed from the glue bucket joint 31. One end of the glue inlet pipe 32 communicates with the glue bucket joint 31, and the other end of the glue inlet pipe 32 extends downward from the bottom end of the glue bucket mounting bracket 12 and communicates with the glue inlet 23.

[0039] Further, the glue bucket joint 31 is made of PEEK material. That is, by setting the glue bucket joint 31 from the conventional metal material to PEEK material, it can avoid the contact between the colloid and the metal, and avoid the situation of generating metal dust due to the contact between the colloid and the metal, thereby improving the product quality.

[0040] Further, referring to Figure 1 、 Figure 2 and Figure 4 , a glue inlet joint 33 is arranged at the end of the glue inlet pipe 32 far from the glue bucket joint 31. The glue inlet joint 33 is partially inserted into the glue inlet 23, and the glue inlet joint 33 is welded and fixed to the outer surface of the screw cavity body 20.

[0041] It can be understood that during the actual production process, the part of the glue inlet joint 33 extending into the glue inlet 23 is finely processed so that the part of the glue inlet joint 33 extending into the glue inlet 23 fits tightly with the glue inlet 23, and the part of the glue inlet joint 33 outside the glue inlet 23 is welded and fixed outside the screw cavity 20, thereby realizing the connection and fixation between the glue inlet joint 33 and the glue inlet 23.

[0042] It should be noted that in the prior art, the connection between the glue inlet joint 33 and the glue inlet 23 usually adopts the way of screwing, that is, external threads are provided on the glue inlet joint 33, internal threads are provided in the glue inlet 23, and the connection between the glue inlet joint 33 and the glue inlet 23 is realized by screwing. However, since metal dust will be generated during the screwing process of the conventional screwing method, it will cause defects in the product.

[0043] Furthermore, a bearing 13 is sleeved on the part of the ceramic screw 40 located in the accommodation cavity 11, and the bearing 13 is fixedly installed in the accommodation cavity 11 to realize the positioning and fixation of the ceramic screw 40 through the bearing 13. In this embodiment, the number of bearings 13 is two, and the two bearings 13 are symmetrically arranged on the upper and lower sides of the accommodation cavity 11, and the two bearings 13 cooperate to position and fix the ceramic screw 40.

[0044] It can be understood that through the setting of the bearing 13, the ceramic screw 40 is not easily offset during the rotation process, that is, the ceramic screw 40 can rotate stably, thereby ensuring the extrusion amount of the colloid in the screw cavity 21 and improving the dispensing quality.

[0045] Furthermore, referring to Figure 2 、 Figure 4 and Figure 5 , a back suction glue port 24 communicating with the screw cavity 21 is further provided on the screw cavity 20. A back suction glue joint 25 is communicated with the back suction glue port 24. One end of the back suction glue away from the back suction glue port 24 is communicated with a back suction glue pipe 26, and a glue suction mechanism (not shown in the figure) is provided at one end of the back suction glue pipe 26 away from the back suction glue joint 25.

[0046] It can be understood that through the setting of the glue suction mechanism and the back suction glue pipe 26 and in cooperation with the glue supply member 30, the excess colloid in the screw cavity 21 can be sucked out, thereby avoiding the situation that the colloid solidifies in the screw cavity 21 when not in use.

[0047] Furthermore, the back suction glue port 24 is located above the glue inlet 23. Part of the back suction glue joint 25 is inserted into the back suction glue port 24, and the back suction glue joint 25 is welded and fixed on the outer surface of the screw cavity 20.

[0048] It can be understood that the back suction glue joint 25 is fixed to both the glue inlet joint 33 and the screw cavity 20 by welding to prevent metal dust from being generated during the tightening process of the conventional thread tightening method, which will not be elaborated here.

[0049] Further, a convex edge 211 is provided at the upper part of the screw cavity 21. The ceramic screw 40 has a convex table surface that abuts and cooperates with the convex edge 211, and a PEEK gasket 212 for abutting against the convex table surface of the ceramic screw 40 is provided on the convex edge 211.

[0050] Through the cooperation between the convex edge 211 and the convex table surface on the ceramic screw 40, the ceramic screw 40 and the screw cavity 21 are more closely matched and not prone to displacement. At the same time, through the setting of the PEEK gasket 212, on the one hand, it can avoid the generation of metal dust due to the friction between the ceramic screw 40 and the convex edge 211 of the screw cavity 20 during rotation, ensuring the purity of the colloid. On the other hand, it can avoid the wear of the ceramic screw 40 caused by friction with the convex edge 211, extending the service life of the ceramic screw 40.

[0051] Further, a sealing rubber ring 27 is also provided between the ceramic screw 40 and the screw cavity 21. The sealing rubber ring 27 is located at one end of the screw cavity 21 close to the accommodating cavity 11, above the convex edge 211, and the sealing rubber ring 27 is used to seal the gap between the ceramic screw 40 and the screw cavity 21.

[0052] It can be understood that by closing the gap between the screw cavity 21 and the ceramic screw 40 with the sealing rubber ring 27, it is difficult for the colloid in the screw cavity 21 to flow upward into the accommodating cavity 11, that is, effectively avoiding the situation of colloid leakage.

[0053] In addition, this embodiment also provides a dispensing device, including a machine body and the dispensing valve as described above.

[0054] The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A ceramic dispensing valve, characterized in that: include: A base (10) having a receiving cavity (11) therein; A screw cavity (20) is arranged below the base (10), and a screw cavity (21) is arranged inside the screw cavity (20) and is communicated with the accommodating cavity (11). A glue outlet (22) is arranged at the bottom end of the screw cavity (20) and is communicated with the screw cavity (21), and a glue inlet (23) is arranged on the side wall of the screw cavity (20) and is communicated with the screw cavity (21). A glue supply member (30) for conveying the glue into the screw cavity (21) through the glue inlet (23); A ceramic screw (40) is rotatably disposed in the accommodating cavity (11), with its bottom end extending into the screw cavity (21) and extending to the glue outlet (22); and The ceramic sleeve (50) is fixedly arranged in the screw cavity (21) and is adapted to the length of the screw cavity (21). Its outer surface is pressed against the inner wall of the screw cavity (21) to prevent the colloid from contacting the screw cavity (21).

2. A ceramic dispensing valve according to claim 1, characterized in that: The glue supply component (30) comprises a glue barrel, a glue barrel joint (31) detachably arranged at the bottom end of the glue barrel, and a glue inlet pipe (32) connected to the glue barrel joint (31); a glue barrel mounting bracket (12) for fixing the glue barrel joint (31) is arranged on the base (10); one end of the glue inlet pipe (32) is connected to the glue barrel joint (31); the other end of the glue inlet pipe (32) extends downward from the bottom end of the glue barrel mounting bracket (12) and is connected to the glue inlet port (23).

3. A ceramic dispensing valve according to claim 2, characterized in that: The rubber barrel joint (31) is made of PEEK material.

4. A ceramic dispensing valve according to claim 2, characterized in that: A glue inlet joint (33) is provided at one end of the glue inlet pipe (32) away from the glue barrel joint (31), and the glue inlet joint (33) is partially inserted into the glue inlet port (23), and the glue inlet joint (33) is welded and fixed to the outer surface of the screw cavity (20).

5. The ceramic dispensing valve according to claim 1, characterized in that: A bearing (13) is sleeved on the portion of the ceramic screw (40) located in the accommodating cavity (11), and the bearing (13) is fixedly installed in the accommodating cavity (11), so that the ceramic screw (40) is positioned and fixed by the bearing (13).

6. A ceramic dispensing valve according to claim 1, characterized in that: The screw cavity (20) is also provided with a glue return port (24) connected to the screw cavity (21); the glue return port (24) is connected to a glue return joint (25); an end of the glue return joint (25) away from the glue return port (24) is connected to a glue return hose (26); and an end of the glue return hose (26) away from the glue return joint (25) is provided with a glue suction mechanism.

7. A ceramic dispensing valve according to claim 6, characterized in that: The glue return port (24) is located above the glue inlet (23), the glue return connector (25) is partially inserted into the glue return port (24), and the glue return connector (25) is welded and fixed to the outer surface of the screw cavity (20).

8. The ceramic dispensing valve according to claim 1, characterized in that: The upper portion of the screw cavity (21) is provided with a convex edge (211), the ceramic screw (40) has a boss surface abutting against the convex edge (211), and a PEEK gasket (212) is provided on the convex edge (211) for abutting against the boss surface of the ceramic screw (40).

9. The ceramic dispensing valve according to claim 1, characterized in that: A sealing rubber ring (27) is also provided between the ceramic screw (40) and the screw chamber (21); the sealing rubber ring (27) is located at one end of the screw chamber (21) close to the accommodating chamber (11), and the sealing rubber ring (27) is used to seal the gap between the ceramic screw (40) and the screw chamber (21).

10. A dispensing device, characterized in that: It comprises a body and a ceramic dispensing valve as described in any one of claims 1 to 9.

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