Solder paste piezoelectric injection valve runner system

Abstract

The utility model discloses a solder paste piezoelectric injection valve runner system, and relates to the technical field of solder paste injection valves. Comprising a firing pin, a nozzle holder and a nozzle. The firing pin comprises a first firing pin body, a second firing pin body and a screw rod which are integrally formed, the first firing pin body and the second firing pin body are both cylindrical, the diameter of the first firing pin body is larger than that of the second firing pin body, and the second firing pin body is located between the first firing pin body and the screw rod; spiral teeth protruding outwards are arranged on the outer surface of the spiral rod; the nozzle seat is installed at the tail end of the solder paste runner, the nozzle is fixedly installed in the nozzle seat, and the tail end of the screw rod abuts against an opening of the nozzle; the solder paste nozzle has the beneficial effects that the phenomena of wizened and skinning of solder paste at the nozzle and the head part of the firing pin can be relieved or solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tin paste injection valve, more particularly, the utility model relates to a kind of tin paste piezoelectric injection valve flow passage system. BACKGROUND

[0002] At present, China has become the largest tin paste injection demand market in the world. From electronics, electroacoustics to communication, digital to LED, there is a tin product in any industry, accompanied by a large increase in demand, and the requirements for tin paste injection are also increasing, such as high precision, high efficiency, high intelligence, etc.

[0003] The piezoelectric tin paste injection valve is usually suitable for No. 5 powder, No. 6 powder and No. 7 powder, and is suitable for tin plating process of circuit board in various electronic industries. The tin point sprayed by the piezoelectric tin paste injection valve can be stabilized between Φ0.25-Φ0.28mm. At the same time, due to its advantages of high precision, high efficiency, high energy saving and wide application range, the market share is gradually expanding.

[0004] With the wide application of tin paste piezoelectric injection valve, through many tin paste piezoelectric injection valve tin injection experiments, it is found that tin paste is prone to dry and skin at the nozzle and the head of the striker, which directly causes nozzle blockage, seriously affecting the stability of tin injection, maintenance cycle and use experience. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a kind of tin paste piezoelectric injection valve flow passage system, which can reduce or solve the phenomenon of tin paste dry and skin at the nozzle and the head of the striker.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a kind of tin paste piezoelectric injection valve flow passage system, its improvement lies in, including striker, nozzle seat and nozzle;

[0007] The striker includes a first striker body, a second striker body and a screw rod, the first striker body and the second striker body are both cylindrical, and the diameter of the first striker body is greater than the diameter of the second striker body, and the second striker body is located between the first striker body and the screw rod;The outer surface of the screw rod has outwardly protruding helical teeth;

[0008] The nozzle seat is installed at the end of the tin paste flow passage, and the nozzle is fixedly installed in the nozzle seat, and the end of the screw rod abuts at the opening of the nozzle.

[0009] In the above structure, the system further includes a striker guide sleeve having a through guide hole, the first striker body passes through the guide hole of the striker guide sleeve to guide the striker.

[0010] In the above structure, the system further comprises a nozzle cover, an end of the tin paste flow channel is outwardly protruded to form a protruding end, an outer surface of the protruding end is provided with external threads, and an inner wall of the nozzle cover is provided with internal threads matched with the external threads.

[0011] The nozzle seat is arranged inside the nozzle cover, and an outer surface of the nozzle seat is provided with external threads matched with the internal threads of the nozzle cover.

[0012] In the above structure, one end of the nozzle seat is arranged inside the protruding end, and a first sealing ring is arranged between an outer wall of the nozzle seat and an inner wall of the protruding end.

[0013] In the above structure, the nozzle is clamped between the nozzle seat and the nozzle cover.

[0014] In the above structure, the system further comprises a flow channel assembly, the tin paste flow channel is arranged inside the flow channel assembly, and the protruding end is arranged at a bottom end of the flow channel assembly.

[0015] In the above structure, the system further comprises a tin paste piezoelectric valve body, a tin paste needle cylinder and a luer joint.

[0016] The tin paste piezoelectric valve body is fixedly arranged above the flow channel assembly, a top end of a first striker body of the striker is arranged to extend into the tin paste piezoelectric valve body, and the striker is driven by the tin paste piezoelectric valve body to realize high-frequency extension and contraction.

[0017] The luer joint is connected between the tin paste needle cylinder and the flow channel assembly, and tin paste in the tin paste needle cylinder is transported to the tin paste flow channel of the flow channel assembly through the luer joint.

[0018] In the above structure, a second sealing ring is further arranged on the second striker body of the striker, and the second sealing ring is tightly arranged on an inner wall of the flow channel assembly.

[0019] The beneficial effects of the present application are as follows: the novel tin paste spraying striker structure combined with different rod diameter structures and spiral structures can effectively solve the tin paste dryness and skinning, reduce the frequency of nozzle blockage, improve the stability of the tin paste piezoelectric spraying valve and prolong the maintenance period. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective structural schematic view of a tin paste piezoelectric spraying valve flow channel system of the present application.

[0021] Figure 2 It is a sectional view of a tin paste piezoelectric spraying valve flow channel system of the present application.

[0022] Figure 3 It is a sectional view of a tin paste piezoelectric spraying valve flow channel system of the present application.Figure 2 A partial enlarged view of point A in the middle.

[0023] Figure 4 It is a structural schematic diagram of the firing pin in the present utility model.

[0024] In the figure: solder paste piezoelectric valve body 10, solder paste syringe 20, Luer connector 30, flow channel assembly 40, solder paste flow channel 401, protruding end 402, striker 50, first striker body 501, second striker body 502, screw rod 503, head 504, striker guide sleeve 505, second sealing ring 506, nozzle seat 60, first sealing ring 601, nozzle 70, nozzle cover 701. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0027] Reference Figure 1 、 Figure 2 As shown, the utility model discloses a solder paste piezoelectric injection valve flow system. Specifically, the system includes a solder paste piezoelectric valve body 10, a solder paste syringe 20, a Luer connector 30 and a flow channel assembly 40, wherein a solder paste flow channel 401 is provided in the flow channel assembly 40; the Luer connector 30 is connected between the solder paste syringe 20 and the flow channel assembly 40, and the solder paste in the solder paste syringe 20 is transported to the solder paste flow channel 401 of the flow channel assembly 40 through the Luer connector 30; the solder paste piezoelectric valve body 10 is fixedly arranged above the flow channel assembly 40.

[0028] Further, combined Figures 2 to 4 As shown, the solder paste piezoelectric injection valve flow channel system also includes a striker 50, a nozzle seat 60 and a nozzle 70, wherein, referring to Figure 4As shown, the striker 50 comprises an integrally formed first striker body 501, a second striker body 502 and a screw rod 503, the second striker body 502 is located between the first striker body 501 and the screw rod 503, the first striker body 501 and the second striker body 502 are both cylindrical, and the diameter of the first striker body 501 is greater than the diameter of the second striker body 502; a circular truncated cone transition is adopted between the first striker body 501 and the second striker body 502; the second striker body 502 is reduced in diameter and located at the outlet position of the solder paste flow channel 401, so as to ensure the flow of the solder paste. The screw rod 503 is located at the bottom end of the striker 50, and the outer surface of the screw rod 503 has outwardly protruding helical teeth; in addition, the top end of the striker 50 (i.e. the top end of the first striker body 501) has a head portion 504 protruding radially outwardly. The head portion 504 of the striker 50 extends into the solder paste piezoelectric valve body 10, and the striker 50 is driven by the solder paste piezoelectric valve body 10 to realize high-frequency extension and contraction movement.

[0029] With reference to Figure 2 、 Figure 3 As shown, the nozzle seat 60 is mounted at the end of the solder paste flow channel 401, the nozzle 70 is fixedly mounted inside the nozzle seat 60, and the end of the screw rod 503 abuts at the opening of the nozzle 70. Through the design of this structure, the screw rod 503 is located between the solder paste flow channel 401 and the nozzle 70, i.e. at the position where the solder paste is most prone to dry out and form a crust; in this scheme, the striker 50 moves at a high frequency, and when the striker 50 strikes the nozzle 70, the screw rod 503 on the striker 50 plays a role in stirring the solder paste up and down, thereby reducing or solving the problem of dryness and crust formation of the solder paste; at the same time, the helical teeth of the screw rod 503 have grooves therebetween, which can ensure that sufficient solder paste flows to the outlet of the nozzle, having double advantages.

[0030] As a further improvement of the above-mentioned embodiment, with reference to Figure 2 、 Figure 3 As shown, the solder paste piezoelectric injection valve flow channel system of the utility model further comprises a striker guide sleeve 505 and a nozzle cover body 701, the striker guide sleeve 505 is provided with a through guide hole, and the first striker body 501 passes through the guide hole of the striker guide sleeve 505 to realize the guidance of the striker 50. The second striker body 502 of the striker 50 is further provided with a second sealing ring 506, and the second sealing ring 506 is tightly attached to the inner wall of the flow channel assembly 40.

[0031] In the embodiment, the end of the tin paste flow channel 401 is outwardly protruded to form a protruding end 402, which is located on the bottom end of the flow channel assembly 40; the outer surface of the protruding end 402 is provided with external threads, the inner wall of the nozzle cover body 701 is provided with internal threads matched with the external threads, and the nozzle seat 60 is arranged inside the nozzle cover body 701, and the outer surface of the nozzle seat 60 is provided with external threads matched with the internal threads of the nozzle cover body 701. In addition, as shown in the accompanying drawings, Figure 3 As shown in the accompanying drawings, one end of the nozzle seat 60 is inserted into the protruding end 402, and a first sealing ring 601 is arranged between the outer wall of the nozzle seat 60 and the inner wall of the protruding end 402; the nozzle 70 is clamped between the nozzle seat 60 and the nozzle cover body 701.

[0032] In the prior art, when the tin paste piezoelectric injection valve sprays tin paste, the tin paste is prone to dry and crust between the nozzle and the plunger head, which causes the nozzle to be directly blocked and unable to spray tin paste, seriously affecting the stability of tin spraying, maintenance cycle and use experience. The tin paste piezoelectric injection valve flow channel system of the utility model can effectively solve the problem of tin paste dryness and crust, reduce the frequency of nozzle blockage, and improve the stability and prolong the maintenance cycle of the tin paste piezoelectric injection valve.

[0033] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A solder paste piezoelectric jet valve flow channel system, characterized in that: Including a striker, a nozzle holder and a nozzle; The striker includes an integrally formed first striker body, a second striker body, and a spiral rod. The first striker body and the second striker body are both cylindrical, and the diameter of the first striker body is larger than that of the second striker body. The second striker body is located between the first striker body and the spiral rod. The outer surface of the spiral rod has outwardly protruding spiral teeth. The nozzle holder is installed at the end of the solder paste flow channel, the nozzle is fixedly installed inside the nozzle holder, and the end of the spiral rod abuts against the opening of the nozzle.

2. The solder paste piezoelectric jet valve flow channel system according to claim 1, characterized in that: The system further includes a firing pin guide sleeve having a penetrating guide hole, and the first firing pin body passes through the guide hole of the firing pin guide sleeve to guide the firing pin.

3. The solder paste piezoelectric jet valve flow channel system according to claim 1, characterized in that: The system further includes a nozzle cover, wherein the end of the solder paste flow channel protrudes outward to form a protruding end, the outer surface of the protruding end is provided with an external thread, and the inner wall of the nozzle cover is provided with an internal thread adapted thereto; The nozzle seat is arranged inside the nozzle cover body, and the outer surface of the nozzle seat is provided with an external thread that is compatible with the internal thread of the nozzle cover body.

4. The solder paste piezoelectric jet valve flow channel system according to claim 3, characterized in that: One end of the nozzle seat extends into the interior of the protruding end, and a first sealing ring is provided between the outer wall of the nozzle seat and the inner wall of the protruding end.

5. The solder paste piezoelectric jet valve flow channel system according to claim 4, characterized in that: The nozzle is clamped between the nozzle seat and the nozzle cover.

6. The solder paste piezoelectric jet valve flow channel system according to claim 3, characterized in that: The system further includes a flow channel component, the solder paste flow channel is located inside the flow channel component, and the protruding end is located on the bottom end of the flow channel component.

7. The solder paste piezoelectric jet valve flow channel system according to claim 6, characterized in that: The system also includes a solder paste piezoelectric valve body, a solder paste syringe, and a Luer connector; The solder paste piezoelectric valve body is fixedly arranged above the flow channel assembly, and the top end of the first striker body of the striker extends into the solder paste piezoelectric valve body, and the striker is driven by the solder paste piezoelectric valve body to achieve high-frequency telescopic movement; The Luer connector is connected between the solder paste syringe and the flow channel assembly, and the solder paste in the solder paste syringe is transported to the solder paste flow channel of the flow channel assembly through the Luer connector.

8. The solder paste piezoelectric jet valve flow channel system according to claim 6, characterized in that: A second sealing ring is also sleeved on the second striker body of the striker, and the second sealing ring is tightly attached to the inner wall of the flow channel assembly.

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